source: trunk/gui/scripts/flowvisviewer.tcl @ 4336

Last change on this file since 4336 was 4336, checked in by ldelgass, 7 years ago

Add method to VisViewer? to get list of pre-defined colormap names. There was
an issue with the name "blue" since it could also be used for a constant color,
but the named "blue" was actually a white-to-blue ramp, so it is now named
"white-to-blue". Also, some work on expanded color settings for glyph viewer.

File size: 104.6 KB
Line 
1# -*- mode: tcl; indent-tabs-mode: nil -*-
2# ----------------------------------------------------------------------
3#  COMPONENT: flowvisviewer - 3D flow rendering
4#
5#
6# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7# It connects to the Flowvis server running on a rendering farm, transmits
8# data, and displays the results.
9#
10# ======================================================================
11#  AUTHOR:  Michael McLennan, Purdue University
12#  Copyright (c) 2004-2012  HUBzero Foundation, LLC
13#
14# See the file "license.terms" for information on usage and redistribution of
15# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16# ======================================================================
17package require Itk
18package require BLT
19package require Img
20
21option add *FlowvisViewer.width 5i widgetDefault
22option add *FlowvisViewer*cursor crosshair widgetDefault
23option add *FlowvisViewer.height 4i widgetDefault
24option add *FlowvisViewer.foreground black widgetDefault
25option add *FlowvisViewer.controlBackground gray widgetDefault
26option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27option add *FlowvisViewer.plotBackground black widgetDefault
28option add *FlowvisViewer.plotForeground white widgetDefault
29option add *FlowvisViewer.plotOutline gray widgetDefault
30option add *FlowvisViewer.font \
31    -*-helvetica-medium-r-normal-*-12-* widgetDefault
32
33# must use this name -- plugs into Rappture::resources::load
34proc FlowvisViewer_init_resources {} {
35    Rappture::resources::register \
36        nanovis_server Rappture::FlowvisViewer::SetServerList
37}
38
39itcl::class Rappture::FlowvisViewer {
40    inherit Rappture::VisViewer
41
42    itk_option define -plotforeground plotForeground Foreground ""
43    itk_option define -plotbackground plotBackground Background ""
44    itk_option define -plotoutline plotOutline PlotOutline ""
45
46    private variable _volcomponents   ; # Array of components found
47    private variable _componentsList   ; # Array of components found
48    private method BuildVolumeComponents {}
49    private method GetDatasetsWithComponent { cname }
50
51    constructor { hostlist args } {
52        Rappture::VisViewer::constructor $hostlist
53    } {
54        # defined below
55    }
56    destructor {
57        # defined below
58    }
59    public proc SetServerList { namelist } {
60        Rappture::VisViewer::SetServerList "nanovis" $namelist
61    }
62    public method add {dataobj {settings ""}}
63    public method camera {option args}
64    public method delete {args}
65    public method disconnect {}
66    public method download {option args}
67    public method flow {option}
68    public method get {args}
69    public method isconnected {}
70    public method limits { cname }
71    public method overMarker { m x }
72    public method parameters {title args} {
73        # do nothing
74    }
75    public method removeDuplicateMarker { m x }
76    public method scale {args}
77    public method updateTransferFunctions {}
78
79    protected method Connect {}
80    protected method CurrentVolumeIds {{what -all}}
81    protected method Disconnect {}
82    protected method Resize {}
83    protected method ResizeLegend {}
84    protected method AdjustSetting {what {value ""}}
85    protected method InitSettings { args }
86    protected method Pan {option x y}
87    protected method Rebuild {}
88    protected method ReceiveData { args }
89    protected method ReceiveImage { args }
90    protected method ReceiveLegend { tf vmin vmax size }
91    protected method Rotate {option x y}
92    protected method SendTransferFuncs {}
93    protected method Slice {option args}
94    protected method SlicerTip {axis}
95    protected method Zoom {option}
96
97    # soon to be removed.
98    protected method Flow {option args}
99    protected method Play {}
100    protected method Pause {}
101
102
103    # The following methods are only used by this class.
104
105    private method AddIsoMarker { x y }
106    private method BuildCameraTab {}
107    private method BuildCutplanesTab {}
108    private method BuildViewTab {}
109    private method BuildVolumeTab {}
110    private method ComputeTransferFunc { tf }
111    private method EventuallyResize { w h }
112    private method EventuallyGoto { nSteps }
113    private method EventuallyResizeLegend { }
114    private method FlowCmd { dataobj comp nbytes extents }
115    private method GetMovie { widget width height }
116    private method GetPngImage { widget width height }
117    private method NameTransferFunc { dataobj comp }
118    private method PanCamera {}
119    private method ParseLevelsOption { tf levels }
120    private method ParseMarkersOption { tf markers }
121    private method WaitIcon { option widget }
122    private method str2millisecs { value }
123    private method millisecs2str { value }
124    private method GetFlowInfo { widget }
125    private method particles { tag name }
126    private method box { tag name }
127    private method streams { tag name }
128    private method arrows { tag name }
129    private method SetOrientation { side }
130
131    private variable _arcball ""
132    private variable _dlist ""     ;# list of data objects
133    private variable _allDataObjs
134    private variable _obj2ovride   ;# maps dataobj => style override
135    private variable _serverObjs   ;# maps dataobj-component to volume ID
136                                    # in the server
137    private variable _recvObjs  ;# list of data objs to send to server
138    private variable _obj2style    ;# maps dataobj-component to transfunc
139    private variable _style2objs   ;# maps tf back to list of
140                                    # dataobj-components using the tf.
141    private variable _obj2flow;         # Maps dataobj-component to a flow.
142
143    private variable _reset 1;          # Connection to server has been reset
144    private variable _click        ;# info used for rotate operations
145    private variable _limits       ;# autoscale min/max for all axes
146    private variable _view         ;# view params for 3D view
147    private variable _isomarkers    ;# array of isosurface level values 0..1
148    private common   _settings
149    private variable _activeTf ""  ;# The currently active transfer function.
150    private variable _first ""     ;# This is the topmost volume.
151    private variable _nextToken 0
152    private variable _icon 0
153    private variable _flow
154    # This
155    # indicates which isomarkers and transfer
156    # function to use when changing markers,
157    # opacity, or thickness.
158    private common _downloadPopup          ;# download options from popup
159
160    private common _hardcopy
161    private variable _width 0
162    private variable _height 0
163    private variable _resizePending 0
164    private variable _resizeLegendPending 0
165    private variable _gotoPending 0
166}
167
168itk::usual FlowvisViewer {
169    keep -background -foreground -cursor -font
170    keep -plotbackground -plotforeground
171}
172
173# ----------------------------------------------------------------------
174# CONSTRUCTOR
175# ----------------------------------------------------------------------
176itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
177    set _serverType "nanovis"
178
179    # Draw legend event
180    $_dispatcher register !legend
181    $_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
182
183    # Send transferfunctions event
184    $_dispatcher register !send_transfunc
185    $_dispatcher dispatch $this !send_transfunc \
186        "[itcl::code $this SendTransferFuncs]; list"
187
188    # Rebuild event.
189    $_dispatcher register !rebuild
190    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
191
192    # Resize event.
193    $_dispatcher register !resize
194    $_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
195
196    $_dispatcher register !play
197    $_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
198   
199    # Draw legend event
200    $_dispatcher register !goto
201    $_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
202
203    $_dispatcher register !movietimeout
204    $_dispatcher register !waiticon
205
206    set _flow(state) 0
207
208    array set _downloadPopup {
209        format draft
210    }
211    #
212    # Populate parser with commands handle incoming requests
213    #
214    $_parser alias image [itcl::code $this ReceiveImage]
215    $_parser alias legend [itcl::code $this ReceiveLegend]
216    $_parser alias data [itcl::code $this ReceiveData]
217
218    # Initialize the view to some default parameters.
219    array set _view {
220        qw      0.853553
221        qx      -0.353553
222        qy      0.353553
223        qz      0.146447
224        zoom    1.0
225        xpan    0
226        ypan    0
227    }
228    set _arcball [blt::arcball create 100 100]
229    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
230    $_arcball quaternion $q
231
232    set _limits(v) [list 0.0 1.0]
233    set _reset 1
234
235    array set _settings [subst {
236        $this-qw                $_view(qw)
237        $this-qx                $_view(qx)
238        $this-qy                $_view(qy)
239        $this-qz                $_view(qz)
240        $this-zoom              $_view(zoom)   
241        $this-xpan              $_view(xpan)
242        $this-ypan              $_view(ypan)
243        $this-arrows            0
244        $this-currenttime       0
245        $this-duration          1:00
246        $this-loop              0
247        $this-play              0
248        $this-speed             500
249        $this-step              0
250        $this-streams           0
251        $this-volume            1
252        $this-ambient           60
253        $this-diffuse           40
254        $this-light2side        1
255        $this-opacity           100
256        $this-specularLevel     30
257        $this-specularExponent  90
258        $this-thickness         350
259        $this-transp            50
260        $this-cutplaneVisible   0
261        $this-xcutplane         1
262        $this-xcutposition      0
263        $this-ycutplane         1
264        $this-ycutposition      0
265        $this-zcutplane         1
266        $this-zcutposition      0
267    }]
268
269    itk_component add 3dview {
270        label $itk_component(plotarea).view -image $_image(plot) \
271            -highlightthickness 0 -borderwidth 0
272    } {
273        usual
274        ignore -highlightthickness -borderwidth  -background
275    }
276    bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
277
278    set f [$itk_component(main) component controls]
279    itk_component add reset {
280        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
281            -highlightthickness 0 \
282            -image [Rappture::icon reset-view] \
283            -command [itcl::code $this Zoom reset]
284    } {
285        usual
286        ignore -highlightthickness
287    }
288    pack $itk_component(reset) -side top -padx 2 -pady 2
289    Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
290
291    itk_component add zoomin {
292        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
293            -highlightthickness 0 \
294            -image [Rappture::icon zoom-in] \
295            -command [itcl::code $this Zoom in]
296    } {
297        usual
298        ignore -highlightthickness
299    }
300    pack $itk_component(zoomin) -side top -padx 2 -pady 2
301    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
302
303    itk_component add zoomout {
304        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
305            -highlightthickness 0 \
306            -image [Rappture::icon zoom-out] \
307            -command [itcl::code $this Zoom out]
308    } {
309        usual
310        ignore -highlightthickness
311    }
312    pack $itk_component(zoomout) -side top -padx 2 -pady 2
313    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
314
315    itk_component add volume {
316        Rappture::PushButton $f.volume \
317            -onimage [Rappture::icon volume-on] \
318            -offimage [Rappture::icon volume-off] \
319            -command [itcl::code $this AdjustSetting volume] \
320            -variable [itcl::scope _settings($this-volume)]
321    }
322    $itk_component(volume) select
323    Rappture::Tooltip::for $itk_component(volume) \
324        "Toggle the volume cloud on/off"
325    pack $itk_component(volume) -padx 2 -pady 2
326
327    itk_component add cutplane {
328        Rappture::PushButton $f.cutplane \
329            -onimage [Rappture::icon cutbutton] \
330            -offimage [Rappture::icon cutbutton] \
331            -variable [itcl::scope _settings($this-cutplaneVisible)] \
332            -command [itcl::code $this AdjustSetting cutplaneVisible]
333    }
334    Rappture::Tooltip::for $itk_component(cutplane) \
335        "Show/Hide cutplanes"
336    pack $itk_component(cutplane) -padx 2 -pady 2
337
338    if { [catch {
339        BuildViewTab
340        BuildVolumeTab
341        BuildCutplanesTab
342        BuildCameraTab
343    } errs] != 0 } {
344        global errorInfo
345        puts stderr "errs=$errs errorInfo=$errorInfo"
346    }
347
348    bind $itk_component(3dview) <Configure> \
349        [itcl::code $this EventuallyResize %w %h]
350
351    # Legend
352    set _image(legend) [image create photo]
353    itk_component add legend {
354        canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
355    } {
356        usual
357        ignore -highlightthickness
358        rename -background -plotbackground plotBackground Background
359    }
360    bind $itk_component(legend) <Configure> \
361        [itcl::code $this EventuallyResizeLegend]
362
363    # Hack around the Tk panewindow.  The problem is that the requested
364    # size of the 3d view isn't set until an image is retrieved from
365    # the server.  So the panewindow uses the tiny size.
366    set w 10000
367    pack forget $itk_component(3dview)
368    blt::table $itk_component(plotarea) \
369        0,0 $itk_component(3dview) -fill both -reqwidth $w \
370        1,0 $itk_component(legend) -fill x
371    blt::table configure $itk_component(plotarea) r1 -resize none   
372    # Create flow controls...
373
374    itk_component add flowcontrols {
375        frame $itk_interior.flowcontrols
376    } {
377        usual
378        rename -background -controlbackground controlBackground Background
379    }
380    pack forget $itk_component(main)
381    blt::table $itk_interior \
382        0,0 $itk_component(main) -fill both  \
383        1,0 $itk_component(flowcontrols) -fill x
384    blt::table configure $itk_interior r1 -resize none
385
386    # Rewind
387    itk_component add rewind {
388        button $itk_component(flowcontrols).reset \
389            -borderwidth 1 -padx 1 -pady 1 \
390            -image [Rappture::icon flow-rewind] \
391            -command [itcl::code $this flow reset]
392    } {
393        usual
394        ignore -borderwidth
395        rename -highlightbackground -controlbackground controlBackground \
396            Background
397    }
398    Rappture::Tooltip::for $itk_component(rewind) \
399        "Rewind flow"
400
401    # Stop
402    itk_component add stop {
403        button $itk_component(flowcontrols).stop \
404            -borderwidth 1 -padx 1 -pady 1 \
405            -image [Rappture::icon flow-stop] \
406            -command [itcl::code $this flow stop]
407    } {
408        usual
409        ignore -borderwidth
410        rename -highlightbackground -controlbackground controlBackground \
411            Background
412    }
413    Rappture::Tooltip::for $itk_component(stop) \
414        "Stop flow"
415
416    # Play
417    itk_component add play {
418        Rappture::PushButton $itk_component(flowcontrols).play \
419            -onimage [Rappture::icon flow-pause] \
420            -offimage [Rappture::icon flow-play] \
421            -variable [itcl::scope _settings($this-play)] \
422            -command [itcl::code $this flow toggle]
423    }
424    set fg [option get $itk_component(hull) font Font]
425    Rappture::Tooltip::for $itk_component(play) \
426        "Play/Pause flow"
427
428    # Loop
429    itk_component add loop {
430        Rappture::PushButton $itk_component(flowcontrols).loop \
431            -onimage [Rappture::icon flow-loop] \
432            -offimage [Rappture::icon flow-loop] \
433            -variable [itcl::scope _settings($this-loop)]
434    }
435    Rappture::Tooltip::for $itk_component(loop) \
436        "Play continuously"
437
438    itk_component add dial {
439        Rappture::Flowdial $itk_component(flowcontrols).dial \
440            -length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
441            -linecolor "" -activelinecolor "" \
442            -min 0.0 -max 1.0 \
443            -variable [itcl::scope _settings($this-currenttime)] \
444            -knobimage [Rappture::icon knob2] -knobposition center@middle
445    } {
446        usual
447        ignore -dialprogresscolor
448        rename -background -controlbackground controlBackground Background
449    }
450    $itk_component(dial) current 0.0
451    bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
452    # Duration
453    itk_component add duration {
454        entry $itk_component(flowcontrols).duration \
455            -textvariable [itcl::scope _settings($this-duration)] \
456            -bg white -width 6 -font "arial 9"
457    } {
458        usual
459        ignore -highlightthickness -background
460    }
461    bind $itk_component(duration) <Return> [itcl::code $this flow duration]
462    bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
463    bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
464    Rappture::Tooltip::for $itk_component(duration) \
465        "Set duration of flow (format is min:sec)"
466
467
468    itk_component add durationlabel {
469        label $itk_component(flowcontrols).durationl \
470            -text "Duration:" -font $fg \
471            -highlightthickness 0
472    } {
473        usual
474        ignore -highlightthickness
475        rename -background -controlbackground controlBackground Background
476    }
477
478    itk_component add speedlabel {
479        label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
480            -highlightthickness 0
481    } {
482        usual
483        ignore -highlightthickness
484        rename -background -controlbackground controlBackground Background
485    }
486
487    # Speed
488    itk_component add speed {
489        Rappture::Flowspeed $itk_component(flowcontrols).speed \
490            -min 1 -max 10 -width 3 -font "arial 9"
491    } {
492        usual
493        ignore -highlightthickness
494        rename -background -controlbackground controlBackground Background
495    }
496    Rappture::Tooltip::for $itk_component(speed) \
497        "Change speed of flow"
498
499    $itk_component(speed) value 1
500    bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
501
502
503    blt::table $itk_component(flowcontrols) \
504        0,0 $itk_component(rewind) -padx {3 0} \
505        0,1 $itk_component(stop) -padx {2 0} \
506        0,2 $itk_component(play) -padx {2 0} \
507        0,3 $itk_component(loop) -padx {2 0} \
508        0,4 $itk_component(dial) -fill x -padx {2 0 } \
509        0,5 $itk_component(duration) -padx { 0 0} \
510        0,7 $itk_component(speed) -padx {2 3}
511
512#        0,6 $itk_component(speedlabel) -padx {2 0}
513    blt::table configure $itk_component(flowcontrols) c* -resize none
514    blt::table configure $itk_component(flowcontrols) c4 -resize both
515    blt::table configure $itk_component(flowcontrols) r0 -pady 1
516    # Bindings for rotation via mouse
517    bind $itk_component(3dview) <ButtonPress-1> \
518        [itcl::code $this Rotate click %x %y]
519    bind $itk_component(3dview) <B1-Motion> \
520        [itcl::code $this Rotate drag %x %y]
521    bind $itk_component(3dview) <ButtonRelease-1> \
522        [itcl::code $this Rotate release %x %y]
523
524    bind $itk_component(3dview) <Configure> \
525        [itcl::code $this EventuallyResize %w %h]
526
527    # Bindings for panning via mouse
528    bind $itk_component(3dview) <ButtonPress-2> \
529        [itcl::code $this Pan click %x %y]
530    bind $itk_component(3dview) <B2-Motion> \
531        [itcl::code $this Pan drag %x %y]
532    bind $itk_component(3dview) <ButtonRelease-2> \
533        [itcl::code $this Pan release %x %y]
534
535    # Bindings for panning via keyboard
536    bind $itk_component(3dview) <KeyPress-Left> \
537        [itcl::code $this Pan set -10 0]
538    bind $itk_component(3dview) <KeyPress-Right> \
539        [itcl::code $this Pan set 10 0]
540    bind $itk_component(3dview) <KeyPress-Up> \
541        [itcl::code $this Pan set 0 -10]
542    bind $itk_component(3dview) <KeyPress-Down> \
543        [itcl::code $this Pan set 0 10]
544    bind $itk_component(3dview) <Shift-KeyPress-Left> \
545        [itcl::code $this Pan set -2 0]
546    bind $itk_component(3dview) <Shift-KeyPress-Right> \
547        [itcl::code $this Pan set 2 0]
548    bind $itk_component(3dview) <Shift-KeyPress-Up> \
549        [itcl::code $this Pan set 0 -2]
550    bind $itk_component(3dview) <Shift-KeyPress-Down> \
551        [itcl::code $this Pan set 0 2]
552
553    # Bindings for zoom via keyboard
554    bind $itk_component(3dview) <KeyPress-Prior> \
555        [itcl::code $this Zoom out]
556    bind $itk_component(3dview) <KeyPress-Next> \
557        [itcl::code $this Zoom in]
558
559    bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
560
561    if {[string equal "x11" [tk windowingsystem]]} {
562        # Bindings for zoom via mouse
563        bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
564        bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
565    }
566
567    set _image(download) [image create photo]
568
569    eval itk_initialize $args
570
571    Connect
572}
573
574# ----------------------------------------------------------------------
575# DESTRUCTOR
576# ----------------------------------------------------------------------
577itcl::body Rappture::FlowvisViewer::destructor {} {
578    $_dispatcher cancel !rebuild
579    $_dispatcher cancel !send_transfunc
580    image delete $_image(plot)
581    image delete $_image(legend)
582    image delete $_image(download)
583    catch { blt::arcball destroy $_arcball }
584    array unset _settings $this-*
585}
586
587# ----------------------------------------------------------------------
588# USAGE: add <dataobj> ?<settings>?
589#
590# Clients use this to add a data object to the plot.  The optional
591# <settings> are used to configure the plot.  Allowed settings are
592# -color, -brightness, -width, -linestyle, and -raise.
593# ----------------------------------------------------------------------
594itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
595    array set params {
596        -color auto
597        -width 1
598        -linestyle solid
599        -brightness 0
600        -raise 0
601        -description ""
602        -param ""
603    }
604    array set params $settings
605    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
606        # can't handle -autocolors yet
607        set params(-color) black
608    }
609    foreach comp [$dataobj components] {
610        set flowobj [$dataobj flowhints $comp]
611        if { $flowobj == "" } {
612            puts stderr "no flowhints $dataobj-$comp"
613            continue
614        }
615        set _obj2flow($dataobj-$comp) $flowobj
616    }
617    set pos [lsearch -exact $_dlist $dataobj]
618    if {$pos < 0} {
619        lappend _dlist $dataobj
620        set _allDataObjs($dataobj) 1
621        set _obj2ovride($dataobj-color) $params(-color)
622        set _obj2ovride($dataobj-width) $params(-width)
623        set _obj2ovride($dataobj-raise) $params(-raise)
624        $_dispatcher event -idle !rebuild
625    }
626}
627
628# ----------------------------------------------------------------------
629# USAGE: get ?-objects?
630# USAGE: get ?-image 3dview|legend?
631#
632# Clients use this to query the list of objects being plotted, in
633# order from bottom to top of this result.  The optional "-image"
634# flag can also request the internal images being shown.
635# ----------------------------------------------------------------------
636itcl::body Rappture::FlowvisViewer::get {args} {
637    if {[llength $args] == 0} {
638        set args "-objects"
639    }
640
641    set op [lindex $args 0]
642    switch -- $op {
643      -objects {
644        # put the dataobj list in order according to -raise options
645        set dlist $_dlist
646        foreach obj $dlist {
647            if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
648                set i [lsearch -exact $dlist $obj]
649                if {$i >= 0} {
650                    set dlist [lreplace $dlist $i $i]
651                    lappend dlist $obj
652                }
653            }
654        }
655        return $dlist
656      }
657      -image {
658        if {[llength $args] != 2} {
659            error "wrong # args: should be \"get -image 3dview|legend\""
660        }
661        switch -- [lindex $args end] {
662            3dview {
663                return $_image(plot)
664            }
665            legend {
666                return $_image(legend)
667            }
668            default {
669                error "bad image name \"[lindex $args end]\": should be 3dview or legend"
670            }
671        }
672      }
673      default {
674        error "bad option \"$op\": should be -objects or -image"
675      }
676    }
677}
678
679# ----------------------------------------------------------------------
680# USAGE: delete ?<dataobj1> <dataobj2> ...?
681#
682#       Clients use this to delete a dataobj from the plot.  If no dataobjs
683#       are specified, then all dataobjs are deleted.  No data objects are
684#       deleted.  They are only removed from the display list.
685#
686# ----------------------------------------------------------------------
687itcl::body Rappture::FlowvisViewer::delete {args} {
688    flow stop
689    if {[llength $args] == 0} {
690        set args $_dlist
691    }
692
693    # Delete all specified dataobjs
694    set changed 0
695    foreach dataobj $args {
696        set pos [lsearch -exact $_dlist $dataobj]
697        if { $pos >= 0 } {
698            foreach comp [$dataobj components] {
699                array unset _limits $dataobj-$comp-*
700            }
701            set _dlist [lreplace $_dlist $pos $pos]
702            array unset _obj2ovride $dataobj-*
703            array unset _obj2flow $dataobj-*
704            array unset _serverObjs $dataobj-*
705            array unset _obj2style $dataobj-*
706            set changed 1
707        }
708    }
709    # If anything changed, then rebuild the plot
710    if {$changed} {
711        # Repair the reverse lookup
712        foreach tf [array names _style2objs] {
713            set list {}
714            foreach {dataobj comp} $_style2objs($tf) break
715            if { [info exists _serverObjs($dataobj-$comp)] } {
716                lappend list $dataobj $comp
717            }
718            if { $list == "" } {
719                array unset _style2objs $tf
720            } else {
721                set _style2objs($tf) $list
722            }
723        }
724        $_dispatcher event -idle !rebuild
725    }
726}
727
728# ----------------------------------------------------------------------
729# USAGE: scale ?<data1> <data2> ...?
730#
731# Sets the default limits for the overall plot according to the
732# limits of the data for all of the given <data> objects.  This
733# accounts for all objects--even those not showing on the screen.
734# Because of this, the limits are appropriate for all objects as
735# the user scans through data in the ResultSet viewer.
736# ----------------------------------------------------------------------
737itcl::body Rappture::FlowvisViewer::scale {args} {
738    array set style {
739        -color BCGYR
740        -levels 6
741        -opacity 1.0
742        -markers ""
743    }
744    array unset _limits
745    array unset _volcomponents
746    foreach dataobj $args {
747        if { ![$dataobj isvalid] } {
748            continue;                     # Object doesn't contain valid data.
749        }
750        foreach cname [$dataobj components] {
751            if { ![info exists _volcomponents($cname)] } {
752                lappend _componentsList $cname
753                array set style [lindex [$dataobj components -style $cname] 0]
754                set cmap [ColorsToColormap $style(-color)]
755                set _cname2defaultcolormap($cname) $cmap
756                set _settings($cname-colormap) $style(-color)
757            }
758            lappend _volcomponents($cname) $dataobj-$cname
759            array unset limits
760            array set limits [$dataobj valueLimits $cname]
761            set _limits($cname) $limits(v)
762        }
763        foreach axis {x y z v} {
764            foreach { min max } [$dataobj limits $axis] break
765            if {"" != $min && "" != $max} {
766                if { ![info exists _limits($axis)] } {
767                    set _limits($axis) [list $min $max]
768                } else {
769                    foreach {amin amax} $_limits($axis) break
770                    if {$min < $amin} {
771                        set amin $min
772                    }
773                    if {$max > $amax} {
774                        set amax $max
775                    }
776                    set _limits($axis) [list $amin $amax]
777                }
778            }
779        }
780    }
781    #BuildVolumeComponents
782}
783
784# ----------------------------------------------------------------------
785# USAGE: download coming
786# USAGE: download controls <downloadCommand>
787# USAGE: download now
788#
789# Clients use this method to create a downloadable representation
790# of the plot.  Returns a list of the form {ext string}, where
791# "ext" is the file extension (indicating the type of data) and
792# "string" is the data itself.
793# ----------------------------------------------------------------------
794itcl::body Rappture::FlowvisViewer::download {option args} {
795    set popup .flowvisviewerdownload
796    switch $option {
797        coming {
798            if {[catch {
799                blt::winop snap $itk_component(plotarea) $_image(download)
800            }]} {
801                $_image(download) configure -width 1 -height 1
802                $_image(download) put #000000
803            }
804        }
805        controls {
806            if {![winfo exists $popup]} {
807                # if we haven't created the popup yet, do it now
808                Rappture::Balloon $popup \
809                    -title "[Rappture::filexfer::label downloadWord] as..."
810                set inner [$popup component inner]
811                label $inner.summary -text "" -anchor w
812                pack $inner.summary -side top
813                set img $_image(plot)
814                set res "[image width $img]x[image height $img]"
815                radiobutton $inner.draft -text "Image (draft $res)" \
816                    -variable Rappture::FlowvisViewer::_downloadPopup(format) \
817                    -value draft
818                pack $inner.draft -anchor w
819
820                set res "640x480"
821                radiobutton $inner.medium -text "Movie (standard $res)" \
822                    -variable Rappture::FlowvisViewer::_downloadPopup(format) \
823                    -value $res
824                pack $inner.medium -anchor w
825
826                set res "1024x768"
827                radiobutton $inner.high -text "Movie (high quality $res)" \
828                    -variable Rappture::FlowvisViewer::_downloadPopup(format) \
829                    -value $res
830                pack $inner.high -anchor w
831                button $inner.go -text [Rappture::filexfer::label download] \
832                    -command [lindex $args 0]
833                pack $inner.go -pady 4
834                $inner.draft select
835            } else {
836                set inner [$popup component inner]
837            }
838            set num [llength [get]]
839            set num [expr {($num == 1) ? "1 result" : "$num results"}]
840            set word [Rappture::filexfer::label downloadWord]
841            $inner.summary configure -text "$word $num in the following format:"
842            update idletasks ;# fix initial sizes
843            update
844            return $popup
845        }
846        now {
847            if { [winfo exists $popup] } {
848                $popup deactivate
849            }
850            switch -- $_downloadPopup(format) {
851                draft {
852                    # Get the image data (as base64) and decode it back to
853                    # binary.  This is better than writing to temporary
854                    # files.  When we switch to the BLT picture image it
855                    # won't be necessary to decode the image data.
856                    set bytes [$_image(plot) data -format "jpeg -quality 100"]
857                    set bytes [Rappture::encoding::decode -as b64 $bytes]
858                    return [list .jpg $bytes]
859                }
860                "640x480" {
861                    return [$this GetMovie [lindex $args 0] 640 480]
862                }
863                "1024x768" {
864                    return [$this GetMovie [lindex $args 0] 1024 768]
865                }
866                default {
867                    error "bad download format $_downloadPopup(format)"
868                }
869            }
870        }
871        default {
872            error "bad option \"$option\": should be coming, controls, now"
873        }
874    }
875}
876
877# ----------------------------------------------------------------------
878# USAGE: Connect ?<host:port>,<host:port>...?
879#
880# Clients use this method to establish a connection to a new
881# server, or to reestablish a connection to the previous server.
882# Any existing connection is automatically closed.
883# ----------------------------------------------------------------------
884itcl::body Rappture::FlowvisViewer::Connect {} {
885    set _hosts [GetServerList "nanovis"]
886    if { "" == $_hosts } {
887        return 0
888    }
889    set _reset 1
890    set result [VisViewer::Connect $_hosts]
891    if { $result } {
892        if { $_reportClientInfo }  {
893            # Tell the server the viewer, hub, user and session.
894            # Do this immediately on connect before buffering any commands
895            global env
896
897            set info {}
898            set user "???"
899            if { [info exists env(USER)] } {
900                set user $env(USER)
901            }
902            set session "???"
903            if { [info exists env(SESSION)] } {
904                set session $env(SESSION)
905            }
906            lappend info "hub" [exec hostname]
907            lappend info "client" "flowvisviewer"
908            lappend info "user" $user
909            lappend info "session" $session
910            SendCmd "clientinfo [list $info]"
911        }
912
913        set w [winfo width $itk_component(3dview)]
914        set h [winfo height $itk_component(3dview)]
915        EventuallyResize $w $h
916    }
917    return $result
918}
919
920#
921# isconnected --
922#
923#       Indicates if we are currently connected to the visualization server.
924#
925itcl::body Rappture::FlowvisViewer::isconnected {} {
926    return [VisViewer::IsConnected]
927}
928
929#
930# disconnect --
931#
932itcl::body Rappture::FlowvisViewer::disconnect {} {
933    Disconnect
934}
935
936#
937# Disconnect --
938#
939#       Clients use this method to disconnect from the current rendering
940#       server.
941#
942itcl::body Rappture::FlowvisViewer::Disconnect {} {
943    VisViewer::Disconnect
944
945    # disconnected -- no more data sitting on server
946    array unset _serverObjs
947}
948
949# ----------------------------------------------------------------------
950# USAGE: SendTransferFuncs
951# ----------------------------------------------------------------------
952itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
953    if { $_activeTf == "" } {
954        puts stderr "no active tf"
955        return
956    }
957    set tf $_activeTf
958    if { $_first == "" } {
959        puts stderr "no first"
960        return
961    }
962
963    # Ensure that the global opacity and thickness settings (in the slider
964    # settings widgets) are used for the active transfer-function.  Update the
965    # values in the _settings varible.
966    set value $_settings($this-opacity)
967    set opacity [expr { double($value) * 0.01 }]
968    set _settings($this-$tf-opacity) $opacity
969    set value $_settings($this-thickness)
970    # Scale values between 0.00001 and 0.01000
971    set thickness [expr {double($value) * 0.0001}]
972    set _settings($this-$tf-thickness) $thickness
973
974    foreach key [array names _obj2style $_first-*] {
975        if { [info exists _obj2style($key)] } {
976            foreach tf $_obj2style($key) {
977                ComputeTransferFunc $tf
978            }
979        }
980    }
981    EventuallyResizeLegend
982}
983
984# ----------------------------------------------------------------------
985# USAGE: ReceiveImage -bytes $size -type $type -token $token
986#
987# Invoked automatically whenever the "image" command comes in from
988# the rendering server.  Indicates that binary image data with the
989# specified <size> will follow.
990# ----------------------------------------------------------------------
991itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
992    array set info {
993        -token "???"
994        -bytes 0
995        -type image
996    }
997    array set info $args
998    set bytes [ReceiveBytes $info(-bytes)]
999    ReceiveEcho <<line "<read $info(-bytes) bytes"
1000    switch -- $info(-type)  {
1001        "image" {
1002            $_image(plot) configure -data $bytes
1003            #puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1004        }
1005        "print" {
1006            set tag $this-$info(-token)
1007            set _hardcopy($tag) $bytes
1008        }
1009        "movie" {
1010            set tag $this-$info(-token)
1011            set _hardcopy($tag) $bytes
1012        }
1013        default {
1014            puts stderr "unknown download type $info(-type)"
1015        }
1016    }
1017}
1018
1019#
1020# ReceiveLegend --
1021#
1022#       The procedure is the response from the render server to each "legend"
1023#       command.  The server sends back a "legend" command invoked our
1024#       the slave interpreter.  The purpose is to collect data of the image
1025#       representing the legend in the canvas.  In addition, the isomarkers
1026#       of the active transfer function are displayed.
1027#
1028#       I don't know is this is the right place to display the isomarkers.
1029#       I don't know all the different paths used to draw the plot. There's
1030#       "Rebuild", "add", etc.
1031#
1032itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1033    if { ![isconnected] } {
1034        return
1035    }
1036    #puts stderr "receive legend $tag $vmin $vmax $size"
1037    set bytes [ReceiveBytes $size]
1038    $_image(legend) configure -data $bytes
1039    ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1040
1041    set c $itk_component(legend)
1042    set w [winfo width $c]
1043    set h [winfo height $c]
1044    set lx 10
1045    set ly [expr {$h - 1}]
1046    if {"" == [$c find withtag colorbar]} {
1047        $c create image 10 10 -anchor nw \
1048            -image $_image(legend) -tags colorbar
1049        $c create text $lx $ly -anchor sw \
1050            -fill $itk_option(-plotforeground) -tags "limits vmin"
1051        $c create text [expr {$w-$lx}] $ly -anchor se \
1052            -fill $itk_option(-plotforeground) -tags "limits vmax"
1053        $c lower colorbar
1054        $c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1055    }
1056    # Display the markers used by the active transfer function.
1057    set tf $_obj2style($tag)
1058    foreach {vmin vmax} [limits $tf] break
1059    $c itemconfigure vmin -text [format %.2g $vmin]
1060    $c coords vmin $lx $ly
1061
1062    $c itemconfigure vmax -text [format %.2g $vmax]
1063    $c coords vmax [expr {$w-$lx}] $ly
1064
1065    if { [info exists _isomarkers($tf)] } {
1066        foreach m $_isomarkers($tf) {
1067            $m visible yes
1068        }
1069    }
1070}
1071
1072#
1073# ReceiveData --
1074#
1075#       The procedure is the response from the render server to each "data
1076#       follows" command.  The server sends back a "data" command invoked our
1077#       the slave interpreter.  The purpose is to collect the min/max of the
1078#       volume sent to the render server.  Since the client (flowvisviewer)
1079#       doesn't parse 3D data formats, we rely on the server (flowvis) to
1080#       tell us what the limits are.  Once we've received the limits to all
1081#       the data we've sent (tracked by _recvObjs) we can then determine
1082#       what the transfer functions are for these # volumes.
1083#
1084#       Note: There is a considerable tradeoff in having the server report
1085#             back what the data limits are.  It means that much of the code
1086#             having to do with transfer-functions has to wait for the data
1087#             to come back, since the isomarkers are calculated based upon
1088#             the data limits.  The client code is much messier because of
1089#             this.  The alternative is to parse any of the 3D formats on the
1090#             client side.
1091#
1092itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1093    if { ![isconnected] } {
1094        return
1095    }
1096    # Arguments from server are name value pairs. Stuff them in an array.
1097    array set values $args
1098    set tag $values(tag)
1099    set parts [split $tag -]
1100    set dataobj [lindex $parts 0]
1101    set _serverObjs($tag) 0
1102    set _limits($tag) [list $values(min) $values(max)]
1103    unset _recvObjs($tag)
1104    if { [array size _recvObjs] == 0 } {
1105        updateTransferFunctions
1106    }
1107}
1108
1109#
1110# Rebuild --
1111#
1112# Called automatically whenever something changes that affects the data
1113# in the widget.  Clears any existing data and rebuilds the widget to
1114# display new data. 
1115#
1116itcl::body Rappture::FlowvisViewer::Rebuild {} {
1117    set w [winfo width $itk_component(3dview)]
1118    set h [winfo height $itk_component(3dview)]
1119    if { $w < 2 || $h < 2 } {
1120        $_dispatcher event -idle !rebuild
1121        return
1122    }
1123
1124    # Turn on buffering of commands to the server.  We don't want to
1125    # be preempted by a server disconnect/reconnect (which automatically
1126    # generates a new call to Rebuild).   
1127    StartBufferingCommands
1128
1129    # Hide all the isomarkers. Can't remove them. Have to remember the
1130    # settings since the user may have created/deleted/moved markers.
1131
1132    foreach tf [array names _isomarkers] {
1133        foreach m $_isomarkers($tf) {
1134            $m visible no
1135        }
1136    }
1137
1138    if { $_width != $w || $_height != $h || $_reset } {
1139        set _width $w
1140        set _height $h
1141        $_arcball resize $w $h
1142        Resize
1143    }
1144
1145    set _first ""
1146    foreach dataobj [get] {
1147        foreach comp [$dataobj components] {
1148            set tag $dataobj-$comp
1149            set isvtk 0
1150            # FIXME: Would like to use the type method of the dataobj
1151            # but the returned value isn't well defined now
1152            if {[catch {
1153                # Send the data as one huge base64-encoded mess -- yuck!
1154                set data [$dataobj blob $comp]
1155            }]} {
1156                set data [$dataobj vtkdata $comp]
1157                set isvtk 1
1158            }
1159            set nbytes [string length $data]
1160            if { $_reportClientInfo }  {
1161                set info {}
1162                lappend info "tool_id"       [$dataobj hints toolId]
1163                lappend info "tool_name"     [$dataobj hints toolName]
1164                lappend info "tool_version"  [$dataobj hints toolRevision]
1165                lappend info "tool_title"    [$dataobj hints toolTitle]
1166                lappend info "dataset_label" [$dataobj hints label]
1167                lappend info "dataset_size"  $nbytes
1168                lappend info "dataset_tag"   $tag
1169                SendCmd "clientinfo [list $info]"
1170            }
1171            set extents [$dataobj extents $comp]
1172            # I have a field. Is a vector field or a volume field?
1173            if { !$isvtk && $extents == 1 } {
1174                set cmd "volume data follows $nbytes $tag\n"
1175            } else {
1176                set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1177                if { $cmd == "" } {
1178                    puts stderr "no command"
1179                    continue
1180                }
1181            }
1182            append _outbuf $cmd
1183            append _outbuf $data
1184            NameTransferFunc $dataobj $comp
1185            set _recvObjs($tag) 1
1186        }
1187    }
1188
1189    set _first [lindex [get] 0]
1190
1191    foreach axis {x y z} {
1192        # Turn off cutplanes for all volumes
1193        SendCmd "cutplane state 0 $axis"
1194    }
1195
1196    # Reset the camera and other view parameters
1197    InitSettings light2side ambient diffuse specularLevel specularExponent \
1198        transp isosurface grid axes volume outline \
1199        cutplaneVisible xcutplane ycutplane zcutplane
1200
1201    # nothing to send -- activate the proper volume
1202    if {"" != $_first} {
1203        set axis [$_first hints updir]
1204        if {"" != $axis} {
1205            SendCmd "up $axis"
1206        }
1207        set location [$_first hints camera]
1208        if { $location != "" } {
1209            array set _view $location
1210        }
1211
1212    }
1213    set _settings($this-qw)    $_view(qw)
1214    set _settings($this-qx)    $_view(qx)
1215    set _settings($this-qy)    $_view(qy)
1216    set _settings($this-qz)    $_view(qz)
1217    set _settings($this-xpan)  $_view(xpan)
1218    set _settings($this-ypan)  $_view(ypan)
1219    set _settings($this-zoom)  $_view(zoom)
1220
1221    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1222    $_arcball quaternion $q
1223    SendCmd "camera orient $q"
1224    SendCmd "camera reset"
1225    PanCamera
1226    SendCmd "camera zoom $_view(zoom)"
1227
1228    foreach dataobj [get] {
1229        foreach comp [$dataobj components] {
1230            NameTransferFunc $dataobj $comp
1231        }
1232    }
1233
1234    # nothing to send -- activate the proper ivol
1235    set _first [lindex [get] 0]
1236    if {"" != $_first} {
1237        set axis [$_first hints updir]
1238        if {"" != $axis} {
1239            SendCmd "up $axis"
1240        }
1241        set location [$_first hints camera]
1242        if { $location != "" } {
1243            array set _view $location
1244        }
1245        set comp [lindex [$_first components] 0]
1246        set _activeTf [lindex $_obj2style($_first-$comp) 0]
1247    }
1248
1249
1250    # sync the state of slicers
1251    set vols [CurrentVolumeIds -cutplanes]
1252    foreach axis {x y z} {
1253        set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1254        SendCmd "cutplane position $pos $axis $vols"
1255    }
1256    SendCmd "volume data state $_settings($this-volume)"
1257    EventuallyResizeLegend
1258
1259    # Actually write the commands to the server socket.  If it fails, we don't
1260    # care.  We're finished here.
1261    blt::busy hold $itk_component(hull)
1262    StopBufferingCommands
1263    blt::busy release $itk_component(hull)
1264    set _reset 0
1265}
1266
1267# ----------------------------------------------------------------------
1268# USAGE: CurrentVolumeIds ?-cutplanes?
1269#
1270# Returns a list of volume server IDs for the current volume being
1271# displayed.  This is normally a single ID, but it might be a list
1272# of IDs if the current data object has multiple components.
1273# ----------------------------------------------------------------------
1274itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1275    return ""
1276    if { $_first == "" } {
1277        return
1278    }
1279    foreach key [array names _serverObjs *-*] {
1280        if {[string match $_first-* $key]} {
1281            array set style {
1282                -cutplanes 1
1283            }
1284            foreach {dataobj comp} [split $key -] break
1285            array set style [lindex [$dataobj components -style $comp] 0]
1286            if {$what != "-cutplanes" || $style(-cutplanes)} {
1287                lappend rlist $_serverObjs($key)
1288            }
1289        }
1290    }
1291    return $rlist
1292}
1293
1294# ----------------------------------------------------------------------
1295# USAGE: Zoom in
1296# USAGE: Zoom out
1297# USAGE: Zoom reset
1298#
1299# Called automatically when the user clicks on one of the zoom
1300# controls for this widget.  Changes the zoom for the current view.
1301# ----------------------------------------------------------------------
1302itcl::body Rappture::FlowvisViewer::Zoom {option} {
1303    switch -- $option {
1304        "in" {
1305            set _view(zoom) [expr {$_view(zoom)*1.25}]
1306            set _settings($this-zoom) $_view(zoom)
1307            SendCmd "camera zoom $_view(zoom)"
1308        }
1309        "out" {
1310            set _view(zoom) [expr {$_view(zoom)*0.8}]
1311            set _settings($this-zoom) $_view(zoom)
1312            SendCmd "camera zoom $_view(zoom)"
1313        }
1314        "reset" {
1315            array set _view {
1316                qw      0.853553
1317                qx      -0.353553
1318                qy      0.353553
1319                qz      0.146447
1320                zoom    1.0
1321                xpan   0
1322                ypan   0
1323            }
1324            if { $_first != "" } {
1325                set location [$_first hints camera]
1326                if { $location != "" } {
1327                    array set _view $location
1328                }
1329            }
1330            set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1331            $_arcball quaternion $q
1332            SendCmd "camera orient $q"
1333            SendCmd "camera reset"
1334            set _settings($this-qw)    $_view(qw)
1335            set _settings($this-qx)    $_view(qx)
1336            set _settings($this-qy)    $_view(qy)
1337            set _settings($this-qz)    $_view(qz)
1338            set _settings($this-xpan)  $_view(xpan)
1339            set _settings($this-ypan)  $_view(ypan)
1340            set _settings($this-zoom)  $_view(zoom)
1341        }
1342    }
1343}
1344
1345itcl::body Rappture::FlowvisViewer::PanCamera {} {
1346    set x $_view(xpan)
1347    set y $_view(ypan)
1348    SendCmd "camera pan $x $y"
1349}
1350
1351# ----------------------------------------------------------------------
1352# USAGE: Rotate click <x> <y>
1353# USAGE: Rotate drag <x> <y>
1354# USAGE: Rotate release <x> <y>
1355#
1356# Called automatically when the user clicks/drags/releases in the
1357# plot area.  Moves the plot according to the user's actions.
1358# ----------------------------------------------------------------------
1359itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1360    switch -- $option {
1361        click {
1362            $itk_component(3dview) configure -cursor fleur
1363            set _click(x) $x
1364            set _click(y) $y
1365        }
1366        drag {
1367            if {[array size _click] == 0} {
1368                Rotate click $x $y
1369            } else {
1370                set w [winfo width $itk_component(3dview)]
1371                set h [winfo height $itk_component(3dview)]
1372                if {$w <= 0 || $h <= 0} {
1373                    return
1374                }
1375
1376                if {[catch {
1377                    # this fails sometimes for no apparent reason
1378                    set dx [expr {double($x-$_click(x))/$w}]
1379                    set dy [expr {double($y-$_click(y))/$h}]
1380                }]} {
1381                    return
1382                }
1383
1384                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1385                foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1386                set _settings($this-qw) $_view(qw)
1387                set _settings($this-qx) $_view(qx)
1388                set _settings($this-qy) $_view(qy)
1389                set _settings($this-qz) $_view(qz)
1390                SendCmd "camera orient $q"
1391
1392                set _click(x) $x
1393                set _click(y) $y
1394            }
1395        }
1396        release {
1397            Rotate drag $x $y
1398            $itk_component(3dview) configure -cursor ""
1399            catch {unset _click}
1400        }
1401        default {
1402            error "bad option \"$option\": should be click, drag, release"
1403        }
1404    }
1405}
1406
1407# ----------------------------------------------------------------------
1408# USAGE: $this Pan click x y
1409#        $this Pan drag x y
1410#        $this Pan release x y
1411#
1412# Called automatically when the user clicks on one of the zoom
1413# controls for this widget.  Changes the zoom for the current view.
1414# ----------------------------------------------------------------------
1415itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1416    # Experimental stuff
1417    set w [winfo width $itk_component(3dview)]
1418    set h [winfo height $itk_component(3dview)]
1419    if { $option == "set" } {
1420        set x [expr $x / double($w)]
1421        set y [expr $y / double($h)]
1422        set _view(xpan) [expr $_view(xpan) + $x]
1423        set _view(ypan) [expr $_view(ypan) + $y]
1424        PanCamera
1425        set _settings($this-xpan) $_view(xpan)
1426        set _settings($this-ypan) $_view(ypan)
1427        return
1428    }
1429    if { $option == "click" } {
1430        set _click(x) $x
1431        set _click(y) $y
1432        $itk_component(3dview) configure -cursor hand1
1433    }
1434    if { $option == "drag" || $option == "release" } {
1435        set dx [expr ($_click(x) - $x)/double($w)]
1436        set dy [expr ($_click(y) - $y)/double($h)]
1437        set _click(x) $x
1438        set _click(y) $y
1439        set _view(xpan) [expr $_view(xpan) - $dx]
1440        set _view(ypan) [expr $_view(ypan) - $dy]
1441        PanCamera
1442        set _settings($this-xpan) $_view(xpan)
1443        set _settings($this-ypan) $_view(ypan)
1444    }
1445    if { $option == "release" } {
1446        $itk_component(3dview) configure -cursor ""
1447    }
1448}
1449
1450
1451# ----------------------------------------------------------------------
1452# USAGE: Flow movie record|stop|play ?on|off|toggle?
1453#
1454# Called when the user clicks on the record, stop or play buttons
1455# for flow visualization.
1456# ----------------------------------------------------------------------
1457itcl::body Rappture::FlowvisViewer::Flow {option args} {
1458    switch -- $option {
1459        movie {
1460            if {[llength $args] < 1 || [llength $args] > 2} {
1461                error "wrong # args: should be \"Flow movie record|stop|play ?on|off|toggle?\""
1462            }
1463            set action [lindex $args 0]
1464            set op [lindex $args 1]
1465            if {$op == ""} { set op "on" }
1466
1467            set current [State $action]
1468            if {$op == "toggle"} {
1469                if {$current == "on"} {
1470                    set op "off"
1471                } else {
1472                    set op "on"
1473                }
1474            }
1475            set cmds ""
1476            switch -- $action {
1477                record {
1478                    if { [$itk_component(rewind) cget -relief] != "sunken" } {
1479                        $itk_component(rewind) configure -relief sunken
1480                        $itk_component(stop) configure -relief raised
1481                        $itk_component(play) configure -relief raised
1482                        set inner $itk_component(settingsFrame)
1483                        set frames [$inner.framecnt value]
1484                        set _settings(nsteps) $frames
1485                        set cmds "flow capture $frames"
1486                        SendCmd $cmds
1487                    }
1488                }
1489                stop {
1490                    if { [$itk_component(stop) cget -relief] != "sunken" } {
1491                        $itk_component(rewind) configure -relief raised
1492                        $itk_component(stop) configure -relief sunken
1493                        $itk_component(play) configure -relief raised
1494                        _pause
1495                        set cmds "flow reset"
1496                        SendCmd $cmds
1497                    }
1498                }
1499                play {
1500                    if { [$itk_component(play) cget -relief] != "sunken" } {
1501                        $itk_component(rewind) configure -relief raised
1502                        $itk_component(stop) configure -relief raised
1503                        $itk_component(play) configure \
1504                            -image [Rappture::icon flow-pause] \
1505                            -relief sunken
1506                        bind $itk_component(play) <ButtonPress> \
1507                            [itcl::code $this _pause]
1508                        flow next
1509                    }
1510                }
1511                default {
1512                    error "bad option \"$option\": should be one of record|stop|play"
1513                }
1514
1515            }
1516        }
1517        default {
1518            error "bad option \"$option\": should be movie"
1519        }
1520    }
1521}
1522
1523# ----------------------------------------------------------------------
1524# USAGE: Play
1525#
1526# ----------------------------------------------------------------------
1527itcl::body Rappture::FlowvisViewer::Play {} {
1528    SendCmd "flow next"
1529    set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1530    $_dispatcher event -after $delay !play
1531}
1532
1533# ----------------------------------------------------------------------
1534# USAGE: Pause
1535#
1536# Invoked when the user hits the "pause" button to stop playing the
1537# current sequence of frames as a movie.
1538# ----------------------------------------------------------------------
1539itcl::body Rappture::FlowvisViewer::Pause {} {
1540    $_dispatcher cancel !play
1541
1542    # Toggle the button to "play" mode
1543    $itk_component(play) configure \
1544        -image [Rappture::icon flow-start] \
1545        -relief raised
1546    bind $itk_component(play) <ButtonPress> \
1547        [itcl::code $this Flow movie play toggle]
1548}
1549
1550# ----------------------------------------------------------------------
1551# USAGE: InitSettings <what> ?<value>?
1552#
1553# Used internally to update rendering settings whenever parameters
1554# change in the popup settings panel.  Sends the new settings off
1555# to the back end.
1556# ----------------------------------------------------------------------
1557itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1558    foreach arg $args {
1559        AdjustSetting $arg
1560    }
1561}
1562
1563# ----------------------------------------------------------------------
1564# USAGE: AdjustSetting <what> ?<value>?
1565#
1566# Used internally to update rendering settings whenever parameters
1567# change in the popup settings panel.  Sends the new settings off
1568# to the back end.
1569# ----------------------------------------------------------------------
1570itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1571    switch -- $what {
1572        colormap {
1573            set color [$itk_component(colormap) value]
1574            set _settings(colormap) $color
1575            #ResetColormap $color
1576        }
1577        ambient {
1578            if { $_first != "" } {
1579                set comp [lindex [$_first components] 0]
1580                set tag $_first-$comp
1581                set val $_settings($this-ambient)
1582                set val [expr {0.01*$val}]
1583                SendCmd "$tag configure -ambient $val"
1584            }
1585        }
1586        diffuse {
1587            if { $_first != "" } {
1588                set comp [lindex [$_first components] 0]
1589                set tag $_first-$comp
1590                set val $_settings($this-diffuse)
1591                set val [expr {0.01*$val}]
1592                SendCmd "$tag configure -diffuse $val"
1593            }
1594        }
1595        specularLevel {
1596            if { $_first != "" } {
1597                set comp [lindex [$_first components] 0]
1598                set tag $_first-$comp
1599                set val $_settings($this-specularLevel)
1600                set val [expr {0.01*$val}]
1601                SendCmd "$tag configure -specularLevel $val"
1602            }
1603        }
1604        specularExponent {
1605            if { $_first != "" } {
1606                set comp [lindex [$_first components] 0]
1607                set tag $_first-$comp
1608                set val $_settings($this-specularExponent)
1609                SendCmd "$tag configure -specularExp $val"
1610            }
1611        }
1612        light2side {
1613            if { $_first != "" } {
1614                set comp [lindex [$_first components] 0]
1615                set tag $_first-$comp
1616                set val $_settings($this-light2side)
1617                SendCmd "$tag configure -light2side $val"
1618            }
1619        }
1620        transp {
1621            if { $_first != "" } {
1622                set comp [lindex [$_first components] 0]
1623                set tag $_first-$comp
1624                set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1625                SendCmd "$tag configure -opacity $opacity"
1626            }
1627        }
1628        opacity {
1629            if { $_first != "" && $_activeTf != "" } {
1630                set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1631                set tf $_activeTf
1632                set _settings($this-$tf-opacity) $opacity
1633                updateTransferFunctions
1634            }
1635        }
1636
1637        thickness {
1638            if { $_first != "" && $_activeTf != "" } {
1639                set val $_settings($this-thickness)
1640                # Scale values between 0.00001 and 0.01000
1641                set sval [expr {0.0001*double($val)}]
1642                set tf $_activeTf
1643                set _settings($this-$tf-thickness) $sval
1644                updateTransferFunctions
1645            }
1646        }
1647        "outline" {
1648            if { $_first != "" } {
1649                set comp [lindex [$_first components] 0]
1650                set tag $_first-$comp
1651                SendCmd "$tag configure -outline $_settings($this-outline)"
1652            }
1653        }
1654        "isosurface" {
1655            if { [isconnected] } {
1656                SendCmd "volume shading isosurface $_settings($this-isosurface)"
1657            }
1658        }
1659        "grid" {
1660            if { [isconnected] } {
1661                SendCmd "grid visible $_settings($this-grid)"
1662            }
1663        }
1664        "axes" {
1665            if { [isconnected] } {
1666                SendCmd "axis visible $_settings($this-axes)"
1667            }
1668        }
1669        "legend" {
1670            if { $_settings($this-legend) } {
1671                blt::table $itk_component(plotarea) \
1672                    0,0 $itk_component(3dview) -fill both \
1673                    1,0 $itk_component(legend) -fill x
1674                blt::table configure $itk_component(plotarea) r1 -resize none
1675            } else {
1676                blt::table forget $itk_component(legend)
1677            }
1678        }
1679        "volume" {
1680            if { $_first != "" } {
1681                set comp [lindex [$_first components] 0]
1682                set tag $_first-$comp
1683                SendCmd "$tag configure -volume $_settings($this-volume)"
1684            }
1685        }
1686        "cutplaneVisible" {
1687            set bool $_settings($this-$what)
1688            set datasets [CurrentVolumeIds -cutplanes]
1689            set tag [lindex $datasets 0]
1690            SendCmd "cutplane visible $bool $tag"
1691        }
1692        "xcutplane" - "ycutplane" - "zcutplane" {
1693            set axis [string range $what 0 0]
1694            set bool $_settings($this-$what)
1695            if { [isconnected] } {
1696                set vols [CurrentVolumeIds -cutplanes]
1697                SendCmd "cutplane state $bool $axis $vols"
1698            }
1699            if { $bool } {
1700                $itk_component(${axis}CutScale) configure -state normal \
1701                    -troughcolor white
1702            } else {
1703                $itk_component(${axis}CutScale) configure -state disabled \
1704                    -troughcolor grey82
1705            }
1706        }
1707        default {
1708            error "don't know how to fix $what"
1709        }
1710    }
1711}
1712
1713# ----------------------------------------------------------------------
1714# USAGE: ResizeLegend
1715#
1716# Used internally to update the legend area whenever it changes size
1717# or when the field changes.  Asks the server to send a new legend
1718# for the current field.
1719# ----------------------------------------------------------------------
1720itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1721    set _resizeLegendPending 0
1722    set lineht [font metrics $itk_option(-font) -linespace]
1723    set w [expr {$_width-20}]
1724    set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1725
1726    if { $_first == "" } {
1727        return
1728    }
1729    set comp [lindex [$_first components] 0]
1730    set tag $_first-$comp
1731    #set _activeTf [lindex $_obj2style($tag) 0]
1732    if {$w > 0 && $h > 0 && "" != $_activeTf} {
1733        #SendCmd "legend $_activeTf $w $h"
1734        SendCmd "$tag legend $w $h"
1735    } else {
1736    # Can't do this as this will remove the items associated with the
1737    # isomarkers.
1738
1739    #$itk_component(legend) delete all
1740    }
1741}
1742
1743#
1744# NameTransferFunc --
1745#
1746#       Creates a transfer function name based on the <style> settings in the
1747#       library run.xml file. This placeholder will be used later to create
1748#       and send the actual transfer function once the data info has been sent
1749#       to us by the render server. [We won't know the volume limits until the
1750#       server parses the 3D data and sends back the limits via ReceiveData.]
1751#
1752#       FIXME: The current way we generate transfer-function names completely
1753#              ignores the -markers option.  The problem is that we are forced
1754#              to compute the name from an increasing complex set of values:
1755#              color, levels, marker, opacity.  I think we're stuck doing it
1756#              now.
1757#
1758itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj cname } {
1759    array set style {
1760        -color BCGYR
1761        -levels 6
1762        -opacity 1.0
1763        -light 40
1764        -transp 50
1765    }
1766    array set style [lindex [$dataobj components -style $cname] 0]
1767    set _settings($this-light) $style(-light)
1768    set _settings($this-transp) $style(-transp)
1769    set _settings($this-opacity) [expr $style(-opacity) * 100]
1770    set _obj2style($dataobj-$cname) $cname
1771    lappend _style2objs($cname) $dataobj $cname
1772    return $cname
1773}
1774
1775#
1776# ComputeTransferFunc --
1777#
1778#   Computes and sends the transfer function to the render server.  It's
1779#   assumed that the volume data limits are known and that the global
1780#   transfer-functions slider values have be setup.  Both parts are
1781#   needed to compute the relative value (location) of the marker, and
1782#   the alpha map of the transfer function.
1783#
1784itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1785    array set style {
1786        -color BCGYR
1787        -levels 6
1788        -opacity 1.0
1789        -light 40
1790        -transp 50
1791    }
1792    set dataobj ""; set comp ""
1793    foreach {dataobj comp} $_style2objs($tf) break
1794    if { $dataobj == "" } {
1795        return 0
1796    }
1797    array set style [lindex [$dataobj components -style $comp] 0]
1798
1799
1800    # We have to parse the style attributes for a volume using this
1801    # transfer-function *once*.  This sets up the initial isomarkers for the
1802    # transfer function.  The user may add/delete markers, so we have to
1803    # maintain a list of markers for each transfer-function.  We use the one
1804    # of the volumes (the first in the list) using the transfer-function as a
1805    # reference.
1806    #
1807    # FIXME: The current way we generate transfer-function names completely
1808    #        ignores the -markers option.  The problem is that we are forced
1809    #        to compute the name from an increasing complex set of values:
1810    #        color, levels, marker, opacity.  I think the cow's out of the
1811    #        barn on this one.
1812
1813    if { ![info exists _isomarkers($tf)] } {
1814        # Have to defer creation of isomarkers until we have data limits
1815        if { [info exists style(-markers)] &&
1816             [llength $style(-markers)] > 0  } {
1817            ParseMarkersOption $tf $style(-markers)
1818        } else {
1819            ParseLevelsOption $tf $style(-levels)
1820        }
1821    }
1822    if { [info exists style(-nonuniformcolors)] } {
1823        foreach { value color } $style(-nonuniformcolors) {
1824            append cmap "$value [Color2RGB $color] "
1825        }
1826    } else {
1827        set cmap [ColorsToColormap $style(-color)]
1828    }
1829    set tag $this-$tf
1830    if { ![info exists _settings($tag-opacity)] } {
1831        set _settings($tag-opacity) $style(-opacity)
1832    }
1833    set max 1.0 ;#$_settings($tag-opacity)
1834   
1835    set isovalues {}
1836    foreach m $_isomarkers($tf) {
1837        lappend isovalues [$m relval]
1838    }
1839    # Sort the isovalues
1840    set isovalues [lsort -real $isovalues]
1841
1842    if { ![info exists _settings($tag-thickness)]} {
1843        set _settings($tag-thickness) 0.005
1844    }
1845    set delta $_settings($tag-thickness)
1846
1847    set first [lindex $isovalues 0]
1848    set last [lindex $isovalues end]
1849    set wmap ""
1850    if { $first == "" || $first != 0.0 } {
1851        lappend wmap 0.0 0.0
1852    }
1853    foreach x $isovalues {
1854        set x1 [expr {$x-$delta-0.00001}]
1855        set x2 [expr {$x-$delta}]
1856        set x3 [expr {$x+$delta}]
1857        set x4 [expr {$x+$delta+0.00001}]
1858        if { $x1 < 0.0 } {
1859            set x1 0.0
1860        } elseif { $x1 > 1.0 } {
1861            set x1 1.0
1862        }
1863        if { $x2 < 0.0 } {
1864            set x2 0.0
1865        } elseif { $x2 > 1.0 } {
1866            set x2 1.0
1867        }
1868        if { $x3 < 0.0 } {
1869            set x3 0.0
1870        } elseif { $x3 > 1.0 } {
1871            set x3 1.0
1872        }
1873        if { $x4 < 0.0 } {
1874            set x4 0.0
1875        } elseif { $x4 > 1.0 } {
1876            set x4 1.0
1877        }
1878        # add spikes in the middle
1879        lappend wmap $x1 0.0
1880        lappend wmap $x2 $max
1881        lappend wmap $x3 $max
1882        lappend wmap $x4 0.0
1883    }
1884    if { $last == "" || $last != 1.0 } {
1885        lappend wmap 1.0 0.0
1886    }
1887    SendCmd "transfunc define $tf { $cmap } { $wmap }"
1888    return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1889}
1890
1891# ----------------------------------------------------------------------
1892# CONFIGURATION OPTION: -plotbackground
1893# ----------------------------------------------------------------------
1894itcl::configbody Rappture::FlowvisViewer::plotbackground {
1895    if { [isconnected] } {
1896        set color $itk_option(-plotbackground)
1897        set rgb [Color2RGB $color]
1898        SendCmd "screen bgcolor $rgb"
1899        $itk_component(legend) configure -background $color
1900    }
1901}
1902
1903# ----------------------------------------------------------------------
1904# CONFIGURATION OPTION: -plotforeground
1905# ----------------------------------------------------------------------
1906itcl::configbody Rappture::FlowvisViewer::plotforeground {
1907    if { [isconnected] } {
1908        set color $itk_option(-plotforeground)
1909        set rgb [Color2RGB $color]
1910        SendCmd "volume outline color $rgb"
1911        SendCmd "grid axiscolor $rgb"
1912        SendCmd "grid linecolor $rgb"
1913        $itk_component(legend) itemconfigure labels -fill $color
1914        $itk_component(legend) itemconfigure limits -fill $color
1915    }
1916}
1917
1918# ----------------------------------------------------------------------
1919# CONFIGURATION OPTION: -plotoutline
1920# ----------------------------------------------------------------------
1921itcl::configbody Rappture::FlowvisViewer::plotoutline {
1922    # Must check if we are connected because this routine is called from the
1923    # class body when the -plotoutline itk_option is defined.  At that point
1924    # the FlowvisViewer class constructor hasn't been called, so we can't
1925    # start sending commands to visualization server.
1926    if { [isconnected] } {
1927        if {"" == $itk_option(-plotoutline)} {
1928            SendCmd "volume outline state off"
1929        } else {
1930            SendCmd "volume outline state on"
1931            SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1932        }
1933    }
1934}
1935
1936#
1937# The -levels option takes a single value that represents the number
1938# of evenly distributed markers based on the current data range. Each
1939# marker is a relative value from 0.0 to 1.0.
1940#
1941itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1942    set c $itk_component(legend)
1943    regsub -all "," $levels " " levels
1944    if {[string is int $levels]} {
1945        for {set i 1} { $i <= $levels } {incr i} {
1946            set x [expr {double($i)/($levels+1)}]
1947            set m [Rappture::IsoMarker \#auto $c $this $tf]
1948            $itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1949            $m relval $x
1950            lappend _isomarkers($tf) $m
1951        }
1952    } else {
1953        foreach x $levels {
1954            set m [Rappture::IsoMarker \#auto $c $this $tf]
1955            $itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1956            $m relval $x
1957            lappend _isomarkers($tf) $m
1958        }
1959    }
1960}
1961
1962#
1963# The -markers option takes a list of zero or more values (the values
1964# may be separated either by spaces or commas) that have the following
1965# format:
1966#
1967#   N%  Percent of current total data range.  Converted to
1968#       to a relative value between 0.0 and 1.0.
1969#   N   Absolute value of marker.  If the marker is outside of
1970#       the current range, it will be displayed on the outer
1971#       edge of the legends, but it range it represents will
1972#       not be seen.
1973#
1974itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1975    set c $itk_component(legend)
1976    regsub -all "," $markers " " markers
1977    foreach marker $markers {
1978        set n [scan $marker "%g%s" value suffix]
1979        if { $n == 2 && $suffix == "%" } {
1980            # ${n}% : Set relative value.
1981            set value [expr {$value * 0.01}]
1982            set m [Rappture::IsoMarker \#auto $c $this $tf]
1983            $itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1984            $m relval $value
1985            lappend _isomarkers($tf) $m
1986        } else {
1987            # ${n} : Set absolute value.
1988            set m [Rappture::IsoMarker \#auto $c $this $tf]
1989            $itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1990            $m absval $value
1991            lappend _isomarkers($tf) $m
1992        }
1993    }
1994}
1995
1996# ----------------------------------------------------------------------
1997# USAGE: UndateTransferFuncs
1998# ----------------------------------------------------------------------
1999itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
2000    $_dispatcher event -after 100 !send_transfunc
2001}
2002
2003itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2004    if { $_activeTf == "" } {
2005        error "active transfer function isn't set"
2006    }
2007    set tf $_activeTf
2008    set c $itk_component(legend)
2009    set m [Rappture::IsoMarker \#auto $c $this $tf]
2010    $itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
2011    set w [winfo width $c]
2012    $m relval [expr {double($x-10)/($w-20)}]
2013    lappend _isomarkers($tf) $m
2014    updateTransferFunctions
2015    return 1
2016}
2017
2018itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
2019    set tf [$marker transferfunc]
2020    set bool 0
2021    if { [info exists _isomarkers($tf)] } {
2022        set list {}
2023        set marker [namespace tail $marker]
2024        foreach m $_isomarkers($tf) {
2025            set sx [$m screenpos]
2026            if { $m != $marker } {
2027                if { $x >= ($sx-3) && $x <= ($sx+3) } {
2028                    $marker relval [$m relval]
2029                    itcl::delete object $m
2030                    bell
2031                    set bool 1
2032                    continue
2033                }
2034            }
2035            lappend list $m
2036        }
2037        set _isomarkers($tf) $list
2038        updateTransferFunctions
2039    }
2040    return $bool
2041}
2042
2043itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
2044    set tf [$marker transferfunc]
2045    if { [info exists _isomarkers($tf)] } {
2046        set marker [namespace tail $marker]
2047        foreach m $_isomarkers($tf) {
2048            set sx [$m screenpos]
2049            if { $m != $marker } {
2050                set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2051                $m activate $bool
2052            }
2053        }
2054    }
2055    return ""
2056}
2057
2058itcl::body Rappture::FlowvisViewer::limits { cname } {
2059    set _limits(v) [list 0.0 1.0]
2060    if { ![info exists _style2objs($cname)] } {
2061        puts stderr "no style2objs for $cname cname=($cname)"
2062        return [array get _limits]
2063    }
2064    set min ""; set max ""
2065    foreach tag [GetDatasetsWithComponent $cname] {
2066        if { ![info exists _serverObjs($tag)] } {
2067            puts stderr "$tag not in serverObjs?"
2068            continue
2069        }
2070        if { ![info exists _limits($tag)] } {
2071            puts stderr "$tag no min?"
2072            continue
2073        }
2074        foreach {vmin vmax} $_limits($tag) break
2075        if { $min == "" || $min > $vmin } {
2076            set min $vmin
2077        }
2078        if { $max == "" || $max < $vmax } {
2079            set max $vmax
2080        }
2081    }
2082    if { $min != "" && $max != "" } {
2083        set _limits(v) [list $min $max]
2084        set _limits($cname) [list $min $max]
2085    }
2086    return $_limits($cname)
2087}
2088
2089itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2090    foreach { key value } {
2091        grid            0
2092        axes            0
2093        outline         1
2094        volume          1
2095        legend          1
2096        particles       1
2097        lic             1
2098    } {
2099        set _settings($this-$key) $value
2100    }
2101
2102    set fg [option get $itk_component(hull) font Font]
2103    #set bfg [option get $itk_component(hull) boldFont Font]
2104
2105    set inner [$itk_component(main) insert end \
2106        -title "View Settings" \
2107        -icon [Rappture::icon wrench]]
2108    $inner configure -borderwidth 4
2109
2110    set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2111    checkbutton $inner.isosurface \
2112        -text "Isosurface shading" \
2113        -variable [itcl::scope _settings($this-isosurface)] \
2114        -command [itcl::code $this AdjustSetting isosurface] \
2115        -font "Arial 9"
2116
2117    checkbutton $inner.axes \
2118        -text "Axes" \
2119        -variable [itcl::scope _settings($this-axes)] \
2120        -command [itcl::code $this AdjustSetting axes] \
2121        -font "Arial 9"
2122
2123    checkbutton $inner.grid \
2124        -text "Grid" \
2125        -variable [itcl::scope _settings($this-grid)] \
2126        -command [itcl::code $this AdjustSetting grid] \
2127        -font "Arial 9"
2128
2129    checkbutton $inner.outline \
2130        -text "Outline" \
2131        -variable [itcl::scope _settings($this-outline)] \
2132        -command [itcl::code $this AdjustSetting outline] \
2133        -font "Arial 9"
2134
2135    checkbutton $inner.legend \
2136        -text "Legend" \
2137        -variable [itcl::scope _settings($this-legend)] \
2138        -command [itcl::code $this AdjustSetting legend] \
2139        -font "Arial 9"
2140
2141    checkbutton $inner.volume \
2142        -text "Volume" \
2143        -variable [itcl::scope _settings($this-volume)] \
2144        -command [itcl::code $this AdjustSetting volume] \
2145        -font "Arial 9"
2146
2147    checkbutton $inner.particles \
2148        -text "Particles" \
2149        -variable [itcl::scope _settings($this-particles)] \
2150        -command [itcl::code $this AdjustSetting particles] \
2151        -font "Arial 9"
2152
2153    checkbutton $inner.lic \
2154        -text "Lic" \
2155        -variable [itcl::scope _settings($this-lic)] \
2156        -command [itcl::code $this AdjustSetting lic] \
2157        -font "Arial 9"
2158
2159    frame $inner.frame
2160
2161    blt::table $inner \
2162        0,0 $inner.axes  -cspan 2 -anchor w \
2163        1,0 $inner.grid  -cspan 2 -anchor w \
2164        2,0 $inner.outline  -cspan 2 -anchor w \
2165        3,0 $inner.volume  -cspan 2 -anchor w \
2166        4,0 $inner.legend  -cspan 2 -anchor w
2167
2168    bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2169
2170    blt::table configure $inner r* -resize none
2171    blt::table configure $inner r5 -resize expand
2172}
2173
2174itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2175    set inner [$itk_component(main) insert end \
2176        -title "Volume Settings" \
2177        -icon [Rappture::icon volume-on]]
2178    $inner configure -borderwidth 4
2179
2180    set fg [option get $itk_component(hull) font Font]
2181    #set bfg [option get $itk_component(hull) boldFont Font]
2182
2183    checkbutton $inner.vol -text "Show volume" -font $fg \
2184        -text "Volume" \
2185        -variable [itcl::scope _settings($this-volume)] \
2186        -command [itcl::code $this AdjustSetting volume] \
2187        -font "Arial 9"
2188
2189    label $inner.shading -text "Shading:" -font $fg
2190
2191    checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2192        -variable [itcl::scope _settings($this-light2side)] \
2193        -command [itcl::code $this AdjustSetting light2side]
2194
2195    label $inner.ambient_l -text "Ambient" -font $fg
2196    ::scale $inner.ambient -from 0 -to 100 -orient horizontal \
2197        -variable [itcl::scope _settings($this-ambient)] \
2198        -width 10 \
2199        -showvalue off -command [itcl::code $this AdjustSetting ambient]
2200
2201    label $inner.diffuse_l -text "Diffuse" -font $fg
2202    ::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
2203        -variable [itcl::scope _settings($this-diffuse)] \
2204        -width 10 \
2205        -showvalue off -command [itcl::code $this AdjustSetting diffuse]
2206
2207    label $inner.specularLevel_l -text "Specular" -font $fg
2208    ::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
2209        -variable [itcl::scope _settings($this-specularLevel)] \
2210        -width 10 \
2211        -showvalue off -command [itcl::code $this AdjustSetting specularLevel]
2212
2213    label $inner.specularExponent_l -text "Shininess" -font $fg
2214    ::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
2215        -variable [itcl::scope _settings($this-specularExponent)] \
2216        -width 10 \
2217        -showvalue off -command [itcl::code $this AdjustSetting specularExponent]
2218
2219    label $inner.clear -text "Clear" -font $fg
2220    ::scale $inner.transp -from 0 -to 100 -orient horizontal \
2221        -variable [itcl::scope _settings($this-transp)] \
2222        -width 10 \
2223        -showvalue off -command [itcl::code $this AdjustSetting transp]
2224    label $inner.opaque -text "Opaque" -font $fg
2225
2226    label $inner.thin -text "Thin" -font $fg
2227    ::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2228        -variable [itcl::scope _settings($this-thickness)] \
2229        -width 10 \
2230        -showvalue off -command [itcl::code $this AdjustSetting thickness]
2231    label $inner.thick -text "Thick" -font $fg
2232
2233    label $inner.colormap_l -text "Colormap" -font "Arial 9"
2234    itk_component add colormap {
2235        Rappture::Combobox $inner.colormap -width 10 -editable no
2236    }
2237    $inner.colormap choices insert end [GetColormapList -includeNone]
2238    $itk_component(colormap) value "BCGYR"
2239    bind $inner.colormap <<Value>> \
2240        [itcl::code $this AdjustSetting colormap]
2241
2242    blt::table $inner \
2243        0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2244        1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2245        2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2246        3,0 $inner.ambient_l -anchor e -pady 2 \
2247        3,1 $inner.ambient -cspan 3 -pady 2 -fill x \
2248        4,0 $inner.diffuse_l -anchor e -pady 2 \
2249        4,1 $inner.diffuse -cspan 3 -pady 2 -fill x \
2250        5,0 $inner.specularLevel_l -anchor e -pady 2 \
2251        5,1 $inner.specularLevel -cspan 3 -pady 2 -fill x \
2252        6,0 $inner.specularExponent_l -anchor e -pady 2 \
2253        6,1 $inner.specularExponent -cspan 3 -pady 2 -fill x \
2254        7,0 $inner.clear -anchor e -pady 2 \
2255        7,1 $inner.transp -cspan 2 -pady 2 -fill x \
2256        7,3 $inner.opaque -anchor w -pady 2 \
2257        8,0 $inner.thin -anchor e -pady 2 \
2258        8,1 $inner.thickness -cspan 2 -pady 2 -fill x \
2259        8,3 $inner.thick -anchor w -pady 2
2260
2261    blt::table configure $inner c0 c1 c3 r* -resize none
2262    blt::table configure $inner r9 -resize expand
2263}
2264
2265itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2266    set inner [$itk_component(main) insert end \
2267        -title "Cutplane Settings" \
2268        -icon [Rappture::icon cutbutton]]
2269    $inner configure -borderwidth 4
2270
2271    # X-value slicer...
2272    itk_component add xCutButton {
2273        Rappture::PushButton $inner.xbutton \
2274            -onimage [Rappture::icon x-cutplane] \
2275            -offimage [Rappture::icon x-cutplane] \
2276            -command [itcl::code $this AdjustSetting xcutplane] \
2277            -variable [itcl::scope _settings($this-xcutplane)]
2278    }
2279    Rappture::Tooltip::for $itk_component(xCutButton) \
2280        "Toggle the X cut plane on/off"
2281    $itk_component(xCutButton) select
2282
2283    itk_component add xCutScale {
2284        ::scale $inner.xval -from 100 -to 0 \
2285            -width 10 -orient vertical -showvalue off \
2286            -borderwidth 1 -highlightthickness 0 \
2287            -command [itcl::code $this Slice move x] \
2288            -variable [itcl::scope _settings($this-xcutposition)]
2289    } {
2290        usual
2291        ignore -borderwidth -highlightthickness
2292    }
2293    # Set the default cutplane value before disabling the scale.
2294    $itk_component(xCutScale) set 50
2295    $itk_component(xCutScale) configure -state disabled
2296    Rappture::Tooltip::for $itk_component(xCutScale) \
2297        "@[itcl::code $this SlicerTip x]"
2298
2299    # Y-value slicer...
2300    itk_component add yCutButton {
2301        Rappture::PushButton $inner.ybutton \
2302            -onimage [Rappture::icon y-cutplane] \
2303            -offimage [Rappture::icon y-cutplane] \
2304            -command [itcl::code $this AdjustSetting ycutplane] \
2305            -variable [itcl::scope _settings($this-ycutplane)]
2306    }
2307    Rappture::Tooltip::for $itk_component(yCutButton) \
2308        "Toggle the Y cut plane on/off"
2309    $itk_component(yCutButton) select
2310
2311    itk_component add yCutScale {
2312        ::scale $inner.yval -from 100 -to 0 \
2313            -width 10 -orient vertical -showvalue off \
2314            -borderwidth 1 -highlightthickness 0 \
2315            -command [itcl::code $this Slice move y] \
2316            -variable [itcl::scope _settings($this-ycutposition)]
2317    } {
2318        usual
2319        ignore -borderwidth -highlightthickness
2320    }
2321    Rappture::Tooltip::for $itk_component(yCutScale) \
2322        "@[itcl::code $this SlicerTip y]"
2323    # Set the default cutplane value before disabling the scale.
2324    $itk_component(yCutScale) set 50
2325    $itk_component(yCutScale) configure -state disabled
2326
2327    # Z-value slicer...
2328    itk_component add zCutButton {
2329        Rappture::PushButton $inner.zbutton \
2330            -onimage [Rappture::icon z-cutplane] \
2331            -offimage [Rappture::icon z-cutplane] \
2332            -command [itcl::code $this AdjustSetting zcutplane] \
2333            -variable [itcl::scope _settings($this-zcutplane)]
2334    }
2335    Rappture::Tooltip::for $itk_component(zCutButton) \
2336        "Toggle the Z cut plane on/off"
2337    $itk_component(zCutButton) select
2338
2339    itk_component add zCutScale {
2340        ::scale $inner.zval -from 100 -to 0 \
2341            -width 10 -orient vertical -showvalue off \
2342            -borderwidth 1 -highlightthickness 0 \
2343            -command [itcl::code $this Slice move z] \
2344            -variable [itcl::scope _settings($this-zcutposition)]
2345    } {
2346        usual
2347        ignore -borderwidth -highlightthickness
2348    }
2349    $itk_component(zCutScale) set 50
2350    $itk_component(zCutScale) configure -state disabled
2351    #$itk_component(zCutScale) configure -state disabled
2352    Rappture::Tooltip::for $itk_component(zCutScale) \
2353        "@[itcl::code $this SlicerTip z]"
2354
2355    blt::table $inner \
2356        1,1 $itk_component(xCutButton) \
2357        1,2 $itk_component(yCutButton) \
2358        1,3 $itk_component(zCutButton) \
2359        0,1 $itk_component(xCutScale) \
2360        0,2 $itk_component(yCutScale) \
2361        0,3 $itk_component(zCutScale) \
2362
2363    blt::table configure $inner r0 r1 c* -resize none
2364    blt::table configure $inner r2 c4 -resize expand
2365    blt::table configure $inner c0 -width 2
2366    blt::table configure $inner c1 c2 c3 -padx 2
2367}
2368
2369itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2370    set inner [$itk_component(main) insert end \
2371        -title "Camera Settings" \
2372        -icon [Rappture::icon camera]]
2373    $inner configure -borderwidth 4
2374
2375    label $inner.view_l -text "view" -font "Arial 9"
2376    set f [frame $inner.view]
2377    foreach side { front back left right top bottom } {
2378        button $f.$side  -image [Rappture::icon view$side] \
2379            -command [itcl::code $this SetOrientation $side]
2380        Rappture::Tooltip::for $f.$side "Change the view to $side"
2381        pack $f.$side -side left
2382    }
2383
2384    blt::table $inner \
2385        0,0 $inner.view_l -anchor e -pady 2 \
2386        0,1 $inner.view -anchor w -pady 2
2387
2388    set row 1
2389    set labels { qw qx qy qz xpan ypan zoom }
2390    foreach tag $labels {
2391        label $inner.${tag}label -text $tag -font "Arial 9"
2392        entry $inner.${tag} -font "Arial 9"  -bg white \
2393            -textvariable [itcl::scope _settings($this-$tag)]
2394        bind $inner.${tag} <KeyPress-Return> \
2395            [itcl::code $this camera set ${tag}]
2396        blt::table $inner \
2397            $row,0 $inner.${tag}label -anchor e -pady 2 \
2398            $row,1 $inner.${tag} -anchor w -pady 2
2399        blt::table configure $inner r$row -resize none
2400        incr row
2401    }
2402
2403    blt::table configure $inner c* r* -resize none
2404    blt::table configure $inner c2 -resize expand
2405    blt::table configure $inner r$row -resize expand
2406}
2407
2408itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2409    set flowobj ""
2410    foreach key [array names _obj2flow] {
2411        set flowobj $_obj2flow($key)
2412        break
2413    }
2414    if { $flowobj == "" } {
2415        return
2416    }
2417    if { [winfo exists $w.frame] } {
2418        destroy $w.frame
2419    }
2420    set inner [frame $w.frame]
2421    blt::table $w \
2422        5,0 $inner -fill both -cspan 2 -anchor nw
2423    array set hints [$flowobj hints]
2424    checkbutton $inner.showstreams -text "Streams Plane" \
2425        -variable [itcl::scope _settings($this-streams)] \
2426        -command  [itcl::code $this streams $key $hints(name)]  \
2427        -font "Arial 9"
2428    Rappture::Tooltip::for $inner.showstreams $hints(description)
2429
2430    checkbutton $inner.showarrows -text "Arrows" \
2431        -variable [itcl::scope _settings($this-arrows)] \
2432        -command  [itcl::code $this arrows $key $hints(name)]  \
2433        -font "Arial 9"
2434
2435    label $inner.particles -text "Particles"         -font "Arial 9 bold"
2436    label $inner.boxes -text "Boxes"         -font "Arial 9 bold"
2437
2438    blt::table $inner \
2439        1,0 $inner.showstreams  -anchor w \
2440        2,0 $inner.showarrows  -anchor w
2441    blt::table configure $inner c0 c1 -resize none
2442    blt::table configure $inner c2 -resize expand
2443
2444    set row 3
2445    set particles [$flowobj particles]
2446    if { [llength $particles] > 0 } {
2447        blt::table $inner $row,0 $inner.particles  -anchor w
2448        incr row
2449    }
2450    foreach part $particles {
2451        array unset info
2452        array set info $part
2453        set name $info(name)
2454        if { ![info exists _settings($this-particles-$name)] } {
2455            set _settings($this-particles-$name) $info(hide)
2456        }
2457        checkbutton $inner.part$row -text $info(label) \
2458            -variable [itcl::scope _settings($this-particles-$name)] \
2459            -onvalue 0 -offvalue 1 \
2460            -command [itcl::code $this particles $key $name] \
2461            -font "Arial 9"
2462        Rappture::Tooltip::for $inner.part$row $info(description)
2463        blt::table $inner $row,0 $inner.part$row -anchor w
2464        if { !$_settings($this-particles-$name) } {
2465            $inner.part$row select
2466        }
2467        incr row
2468    }
2469    set boxes [$flowobj boxes]
2470    if { [llength $boxes] > 0 } {
2471        blt::table $inner $row,0 $inner.boxes  -anchor w
2472        incr row
2473    }
2474    foreach box $boxes {
2475        array unset info
2476        array set info $box
2477        set name $info(name)
2478        if { ![info exists _settings($this-box-$name)] } {
2479            set _settings($this-box-$name) $info(hide)
2480        }
2481        checkbutton $inner.box$row -text $info(label) \
2482            -variable [itcl::scope _settings($this-box-$name)] \
2483            -onvalue 0 -offvalue 1 \
2484            -command [itcl::code $this box $key $name] \
2485            -font "Arial 9"
2486        Rappture::Tooltip::for $inner.box$row $info(description)
2487        blt::table $inner $row,0 $inner.box$row -anchor w
2488        if { !$_settings($this-box-$name) } {
2489            $inner.box$row select
2490        }
2491        incr row
2492    }
2493    blt::table configure $inner r* -resize none
2494    blt::table configure $inner r$row -resize expand
2495    blt::table configure $inner c3 -resize expand
2496    event generate [winfo parent [winfo parent $w]] <Configure>
2497}
2498
2499itcl::body Rappture::FlowvisViewer::particles { tag name } {
2500    set bool $_settings($this-particles-$name)
2501    SendCmd "$tag particles configure {$name} -hide $bool"
2502}
2503
2504itcl::body Rappture::FlowvisViewer::box { tag name } {
2505    set bool $_settings($this-box-$name)
2506    SendCmd "$tag box configure {$name} -hide $bool"
2507}
2508
2509itcl::body Rappture::FlowvisViewer::streams { tag name } {
2510    set bool $_settings($this-streams)
2511    SendCmd "$tag configure -slice $bool"
2512}
2513
2514itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2515    set bool $_settings($this-arrows)
2516    SendCmd "$tag configure -arrows $bool"
2517}
2518
2519# ----------------------------------------------------------------------
2520# USAGE: Slice move x|y|z <newval>
2521#
2522# Called automatically when the user drags the slider to move the
2523# cut plane that slices 3D data.  Gets the current value from the
2524# slider and moves the cut plane to the appropriate point in the
2525# data set.
2526# ----------------------------------------------------------------------
2527itcl::body Rappture::FlowvisViewer::Slice {option args} {
2528    switch -- $option {
2529        move {
2530            if {[llength $args] != 2} {
2531                error "wrong # args: should be \"Slice move x|y|z newval\""
2532            }
2533            set axis [lindex $args 0]
2534            set newval [lindex $args 1]
2535            set newpos [expr {0.01*$newval}]
2536
2537            # show the current value in the readout
2538
2539            set ids [CurrentVolumeIds -cutplanes]
2540            SendCmd "cutplane position $newpos $axis $ids"
2541        }
2542        default {
2543            error "bad option \"$option\": should be axis, move, or volume"
2544        }
2545    }
2546}
2547
2548# ----------------------------------------------------------------------
2549# USAGE: SlicerTip <axis>
2550#
2551# Used internally to generate a tooltip for the x/y/z slicer controls.
2552# Returns a message that includes the current slicer value.
2553# ----------------------------------------------------------------------
2554itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2555    set val [$itk_component(${axis}CutScale) get]
2556    return "Move the [string toupper $axis] cut plane.\nCurrently:  $axis = $val%"
2557}
2558
2559itcl::body Rappture::FlowvisViewer::Resize {} {
2560    $_arcball resize $_width $_height
2561    SendCmd "screen size $_width $_height"
2562    set _resizePending 0
2563}
2564
2565itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2566    set _width $w
2567    set _height $h
2568    $_arcball resize $w $h
2569    if { !$_resizePending } {
2570        $_dispatcher event -after 200 !resize
2571        set _resizePending 1
2572    }
2573}
2574
2575itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2576    if { !$_resizeLegendPending } {
2577        $_dispatcher event -after 100 !legend
2578        set _resizeLegendPending 1
2579    }
2580}
2581
2582itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2583    set _flow(goto) $nSteps
2584    if { !$_gotoPending } {
2585        $_dispatcher event -after 1000 !goto
2586        set _gotoPending 1
2587    }
2588}
2589
2590#  camera --
2591itcl::body Rappture::FlowvisViewer::camera {option args} {
2592    switch -- $option {
2593        "show" {
2594            puts [array get _view]
2595        }
2596        "set" {
2597            set who [lindex $args 0]
2598            set x $_settings($this-$who)
2599            set code [catch { string is double $x } result]
2600            if { $code != 0 || !$result } {
2601                set _settings($this-$who) $_view($who)
2602                return
2603            }
2604            switch -- $who {
2605                "xpan" - "ypan" {
2606                    set _view($who) $_settings($this-$who)
2607                    PanCamera
2608                }
2609                "qx" - "qy" - "qz" - "qw" {
2610                    set _view($who) $_settings($this-$who)
2611                    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2612                    $_arcball quaternion $q
2613                    SendCmd "camera orient $q"
2614                }
2615                "zoom" {
2616                    set _view($who) $_settings($this-$who)
2617                    SendCmd "camera zoom $_view(zoom)"
2618                }
2619            }
2620        }
2621    }
2622}
2623
2624itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2625    set tag "$dataobj-$comp"
2626    if { ![info exists _obj2flow($tag)] } {
2627        append cmd "flow add $tag\n"
2628        append cmd "$tag data follows $nbytes $extents\n"
2629        return $cmd
2630    }
2631    set flowobj $_obj2flow($tag)
2632    if { $flowobj == "" } {
2633        puts stderr "no flowobj"
2634        return ""
2635    }
2636    set cmd {}
2637    append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2638    array set info  [$flowobj hints]
2639    set _settings($this-volume) $info(volume)
2640    set _settings($this-outline) $info(outline)
2641    set _settings($this-arrows) $info(arrows)
2642    set _settings($this-duration) $info(duration)
2643    $itk_component(speed) value $info(speed)
2644    append cmd "flow add $tag"
2645    append cmd " -position $info(position)"
2646    append cmd " -axis $info(axis)"
2647    append cmd " -volume $info(volume)"
2648    append cmd " -outline $info(outline)"
2649    append cmd " -slice $info(streams)"
2650    append cmd " -arrows $info(arrows)\n"
2651    foreach part [$flowobj particles] {
2652        array unset info
2653        array set info $part
2654        set color [Color2RGB $info(color)]
2655        append cmd "$tag particles add $info(name)"
2656        append cmd " -position $info(position)"
2657        append cmd " -hide $info(hide)"
2658        append cmd " -axis $info(axis)"
2659        append cmd " -color {$color}"
2660        append cmd " -size $info(size)\n"
2661    }
2662    foreach box [$flowobj boxes] {
2663        array unset info
2664        set info(corner1) ""
2665        set info(corner2) ""
2666        array set info $box
2667        if { $info(corner1) == "" || $info(corner2) == "" } {
2668            continue
2669        }
2670        set color [Color2RGB $info(color)]
2671        append cmd "$tag box add $info(name)"
2672        append cmd " -color {$color}"
2673        append cmd " -hide $info(hide)"
2674        append cmd " -linewidth $info(linewidth) "
2675        append cmd " -corner1 {$info(corner1)} "
2676        append cmd " -corner2 {$info(corner2)}\n"
2677    }   
2678    append cmd "$tag data follows $nbytes $extents\n"
2679    return $cmd
2680}
2681
2682
2683#
2684# flow --
2685#
2686# Called when the user clicks on the stop or play buttons
2687# for flow visualization.
2688#
2689#        $this flow play
2690#        $this flow stop
2691#        $this flow toggle
2692#        $this flow reset
2693#        $this flow pause
2694#        $this flow next
2695#
2696itcl::body Rappture::FlowvisViewer::flow { args } {
2697    set option [lindex $args 0]
2698    switch -- $option {
2699        "goto2" {
2700            puts stderr "actually sending \"flow goto $_flow(goto)\""
2701            SendCmd "flow goto $_flow(goto)"
2702            set _gotoPending 0
2703        }
2704        "goto" {
2705            puts stderr "flow goto to $_settings($this-currenttime)"
2706            # Figure out how many steps to the current time based upon
2707            # the speed and duration.
2708            set current $_settings($this-currenttime)
2709            set speed [$itk_component(speed) value]
2710            set time [str2millisecs $_settings($this-duration)]
2711            $itk_component(dial) configure -max $time
2712            set delay [expr int(round(500.0/$speed))]
2713            set timePerStep [expr {double($time) / $delay}]
2714            set nSteps [expr {int(ceil($current/$timePerStep))}]
2715            EventuallyGoto $nSteps
2716        }
2717        "speed" {
2718            set speed [$itk_component(speed) value]
2719            set _flow(delay) [expr int(round(500.0/$speed))]
2720        }
2721        "duration" {
2722            set max [str2millisecs $_settings($this-duration)]
2723            if { $max < 0 } {
2724                bell
2725                return
2726            }
2727            set _flow(duration) $max
2728            set _settings($this-duration) [millisecs2str $max]
2729            $itk_component(dial) configure -max $max
2730        }
2731        "off" {
2732            set _flow(state) 0
2733            $_dispatcher cancel !play
2734            $itk_component(play) deselect
2735        }
2736        "on" {
2737            flow speed
2738            flow duration
2739            set _flow(state) 1
2740            set _settings($this-currenttime) 0
2741            $itk_component(play) select
2742        }
2743        "stop" {
2744            if { $_flow(state) } {
2745                flow off
2746                flow reset
2747            }
2748        }
2749        "pause" {
2750            if { $_flow(state) } {
2751                flow off
2752            }
2753        }
2754        "play" {
2755            # If the flow is currently off, then restart it.
2756            if { !$_flow(state) } {
2757                flow on
2758                # If we're at the end of the flow, reset the flow.
2759                set _settings($this-currenttime) \
2760                    [expr {$_settings($this-currenttime) + $_flow(delay)}]
2761                if { $_settings($this-currenttime) >= $_flow(duration) } {
2762                    set _settings($this-step) 1
2763                    SendCmd "flow reset"
2764                }
2765                flow next
2766            }
2767        }
2768        "toggle" {
2769            if { $_settings($this-play) } {
2770                flow play
2771            } else {
2772                flow pause
2773            }
2774        }
2775        "reset" {
2776            set _settings($this-currenttime) 0
2777            SendCmd "flow reset"
2778        }
2779        "next" {
2780            if { ![winfo viewable $itk_component(3dview)] } {
2781                flow stop
2782                return
2783            }
2784            set _settings($this-currenttime) \
2785                [expr {$_settings($this-currenttime) + $_flow(delay)}]
2786            if { $_settings($this-currenttime) >= $_flow(duration) } {
2787                if { !$_settings($this-loop) } {
2788                    flow off
2789                    return
2790                }
2791                flow reset
2792            } else {
2793                SendCmd "flow next"
2794            }
2795            $_dispatcher event -after $_flow(delay) !play
2796        }
2797        default {
2798            error "bad option \"$option\": should be play, stop, toggle, or reset."
2799        }
2800    }
2801}
2802
2803itcl::body Rappture::FlowvisViewer::WaitIcon  { option widget } {
2804    switch -- $option {
2805        "start" {
2806            $_dispatcher dispatch $this !waiticon \
2807                "[itcl::code $this WaitIcon "next" $widget] ; list"
2808            set _icon 0
2809            $widget configure -image [Rappture::icon bigroller${_icon}]
2810            $_dispatcher event -after 100 !waiticon
2811        }
2812        "next" {
2813            incr _icon
2814            if { $_icon >= 8 } {
2815                set _icon 0
2816            }
2817            $widget configure -image [Rappture::icon bigroller${_icon}]
2818            $_dispatcher event -after 100 !waiticon
2819        }
2820        "stop" {
2821            $_dispatcher cancel !waiticon
2822        }
2823    }
2824}
2825
2826itcl::body Rappture::FlowvisViewer::GetPngImage  { widget width height } {
2827    set token "print[incr _nextToken]"
2828    set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2829    set $var ""
2830
2831    # Setup an automatic timeout procedure.
2832    $_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2833
2834    set popup .flowvisviewerprint
2835    if {![winfo exists $popup]} {
2836        Rappture::Balloon $popup -title "Generating file..."
2837        set inner [$popup component inner]
2838        label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2839        label $inner.please -text "This may take a minute." -font "Arial 10"
2840        label $inner.icon -image [Rappture::icon bigroller0]
2841        button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2842            -command [list set $var ""]
2843        blt::table $inner \
2844            0,0 $inner.title -cspan 2 \
2845            1,0 $inner.please -anchor w \
2846            1,1 $inner.icon -anchor e  \
2847            2,0 $inner.cancel -cspan 2
2848        blt::table configure $inner r0 -pady 4
2849        blt::table configure $inner r2 -pady 4
2850        bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2851    } else {
2852        set inner [$popup component inner]
2853    }
2854
2855    $_dispatcher event -after 60000 !pngtimeout
2856    WaitIcon start $inner.icon
2857    grab set $inner
2858    focus $inner.cancel
2859
2860    SendCmd "print $token $width $height"
2861
2862    $popup activate $widget below
2863    update idletasks
2864    update
2865    # We wait here for either
2866    #  1) the png to be delivered or
2867    #  2) timeout or 
2868    #  3) user cancels the operation.
2869    tkwait variable $var
2870
2871    # Clean up.
2872    $_dispatcher cancel !pngtimeout
2873    WaitIcon stop $inner.icon
2874    grab release $inner
2875    $popup deactivate
2876    update
2877
2878    if { $_hardcopy($this-$token) != "" } {
2879        return [list .png $_hardcopy($this-$token)]
2880    }
2881    return ""
2882}
2883
2884itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2885    set token "movie[incr _nextToken]"
2886    set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2887    set $var ""
2888
2889    # Setup an automatic timeout procedure.
2890    $_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2891    set popup .flowvisviewermovie
2892    if {![winfo exists $popup]} {
2893        Rappture::Balloon $popup -title "Generating movie..."
2894        set inner [$popup component inner]
2895        label $inner.title -text "Generating movie for download" \
2896                -font "Arial 10 bold"
2897        label $inner.please -text "This may take a few minutes." \
2898                -font "Arial 10"
2899        label $inner.icon -image [Rappture::icon bigroller0]
2900        button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2901            -command [list set $var ""]
2902        blt::table $inner \
2903            0,0 $inner.title -cspan 2 \
2904            1,0 $inner.please -anchor w \
2905            1,1 $inner.icon -anchor e  \
2906            2,0 $inner.cancel -cspan 2
2907        blt::table configure $inner r0 -pady 4
2908        blt::table configure $inner r2 -pady 4
2909        bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2910    } else {
2911        set inner [$popup component inner]
2912    }
2913    update
2914    # Timeout is set to 10 minutes.
2915    $_dispatcher event -after 600000 !movietimeout
2916    WaitIcon start $inner.icon
2917    grab set $inner
2918    focus $inner.cancel
2919   
2920    flow duration
2921    flow speed
2922    set nframes [expr round($_flow(duration) / $_flow(delay))]
2923    set framerate [expr 1000.0 / $_flow(delay)]
2924
2925    # These are specific to MPEG1 video generation
2926    set framerate 25.0
2927    set bitrate 6.0e+6
2928
2929    set start [clock seconds]
2930    SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2931   
2932    $popup activate $widget below
2933    update idletasks
2934    update
2935    # We wait here until
2936    #  1. the movie is delivered or
2937    #  2. we've timed out or 
2938    #  3. the user has canceled the operation.b
2939    tkwait variable $var
2940
2941    puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2942
2943    # Clean up.
2944    $_dispatcher cancel !movietimeout
2945    WaitIcon stop $inner.icon
2946    grab release $inner
2947    $popup deactivate
2948    destroy $popup
2949    update
2950
2951    # This will both cancel the movie generation (if it hasn't already
2952    # completed) and reset the flow.
2953    SendCmd "flow reset"
2954    if { $_hardcopy($this-$token) != "" } {
2955        return [list .mpg $_hardcopy($this-$token)]
2956    }
2957    return ""
2958}
2959
2960itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2961    set parts [split $value :]
2962    set secs 0
2963    set mins 0
2964    if { [llength $parts] == 1 } {
2965        scan [lindex $parts 0] "%d" secs
2966    } else {
2967        scan [lindex $parts 1] "%d" secs
2968        scan [lindex $parts 0] "%d" mins
2969    }
2970    set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2971    if { $ms > 600000.0 } {
2972        set ms 600000.0
2973    }
2974    if { $ms == 0.0 } {
2975        set ms 60000.0
2976    }
2977    return $ms
2978}
2979
2980itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2981    set min [expr floor($value / 60000.0)]
2982    set sec [expr ($value - ($min*60000.0)) / 1000.0]
2983    return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2984}
2985
2986itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2987    array set positions {
2988        front "1 0 0 0"
2989        back  "0 0 1 0"
2990        left  "0.707107 0 -0.707107 0"
2991        right "0.707107 0 0.707107 0"
2992        top   "0.707107 -0.707107 0 0"
2993        bottom "0.707107 0.707107 0 0"
2994    }
2995    foreach name { qw qx qy qz } value $positions($side) {
2996        set _view($name) $value
2997    }
2998    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2999    $_arcball quaternion $q
3000    SendCmd "camera orient $q"
3001    SendCmd "camera reset"
3002    set _view(xpan) 0.0
3003    set _view(ypan) 0.0
3004    set _view(zoom) 1.0
3005    set _settings($this-xpan) $_view(xpan)
3006    set _settings($this-ypan) $_view(ypan)
3007    set _settings($this-zoom) $_view(zoom)
3008}
3009
3010# Reset global settings from dataset's settings.
3011itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
3012    $itk_component(volcomponents) choices delete 0 end
3013    foreach name $_componentsList {
3014        $itk_component(volcomponents) choices insert end $name $name
3015    }
3016    set _current [lindex $_componentsList 0]
3017    $itk_component(volcomponents) value $_current
3018}
3019
3020# Reset global settings from dataset's settings.
3021itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
3022    if { ![info exists _volcomponents($cname)] } {
3023        return ""
3024    }
3025    set list ""
3026    foreach tag $_volcomponents($cname) {
3027        if { ![info exists _serverObjs($tag)] } {
3028            continue
3029        }
3030        lappend list $tag
3031    }
3032    return $list
3033}
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