source: branches/1.3/gui/scripts/vtkstreamlinesviewer.tcl @ 4772

Last change on this file since 4772 was 4772, checked in by ldelgass, 6 years ago

merge r4771 from trunk

File size: 83.7 KB
Line 
1# -*- mode: tcl; indent-tabs-mode: nil -*-
2# ----------------------------------------------------------------------
3#  COMPONENT: vtkstreamlinesviewer - Vtk streamlines object viewer
4#
5#  It connects to the Vtk server running on a rendering farm,
6#  transmits data, and displays the results.
7# ======================================================================
8#  AUTHOR:  Michael McLennan, Purdue University
9#  Copyright (c) 2004-2014  HUBzero Foundation, LLC
10#
11#  See the file "license.terms" for information on usage and
12#  redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13# ======================================================================
14package require Itk
15package require BLT
16package require Img
17
18option add *VtkStreamlinesViewer.width 4i widgetDefault
19option add *VtkStreamlinesViewer*cursor crosshair widgetDefault
20option add *VtkStreamlinesViewer.height 4i widgetDefault
21option add *VtkStreamlinesViewer.foreground black widgetDefault
22option add *VtkStreamlinesViewer.controlBackground gray widgetDefault
23option add *VtkStreamlinesViewer.controlDarkBackground #999999 widgetDefault
24option add *VtkStreamlinesViewer.plotBackground black widgetDefault
25option add *VtkStreamlinesViewer.plotForeground white widgetDefault
26option add *VtkStreamlinesViewer.font \
27    -*-helvetica-medium-r-normal-*-12-* widgetDefault
28
29# must use this name -- plugs into Rappture::resources::load
30proc VtkStreamlinesViewer_init_resources {} {
31    Rappture::resources::register \
32        vtkvis_server Rappture::VtkStreamlinesViewer::SetServerList
33}
34
35itcl::class Rappture::VtkStreamlinesViewer {
36    inherit Rappture::VisViewer
37
38    itk_option define -plotforeground plotForeground Foreground ""
39    itk_option define -plotbackground plotBackground Background ""
40
41    constructor { hostlist args } {
42        Rappture::VisViewer::constructor $hostlist
43    } {
44        # defined below
45    }
46    destructor {
47        # defined below
48    }
49    public proc SetServerList { namelist } {
50        Rappture::VisViewer::SetServerList "vtkvis" $namelist
51    }
52    public method add {dataobj {settings ""}}
53    public method camera {option args}
54    public method delete {args}
55    public method disconnect {}
56    public method download {option args}
57    public method get {args}
58    public method isconnected {}
59    public method parameters {title args} {
60        # do nothing
61    }
62    public method scale {args}
63
64    # The following methods are only used by this class.
65    private method AdjustSetting {what {value ""}}
66    private method BuildAxisTab {}
67    private method BuildCameraTab {}
68    private method BuildColormap { name colors }
69    private method BuildCutplaneTab {}
70    private method BuildDownloadPopup { widget command }
71    private method BuildStreamsTab {}
72    private method BuildVolumeTab {}
73    private method DrawLegend {}
74    private method Combo { option }
75    private method Connect {}
76    private method CurrentDatasets {args}
77    private method Disconnect {}
78    private method DoResize {}
79    private method DoReseed {}
80    private method DoRotate {}
81    private method EnterLegend { x y }
82    private method EventuallyResize { w h }
83    private method EventuallyReseed { numPoints }
84    private method EventuallyRotate { q }
85    private method EventuallySetCutplane { axis args }
86    private method GetImage { args }
87    private method GetVtkData { args }
88    private method InitSettings { args  }
89    private method IsValidObject { dataobj }
90    private method LeaveLegend {}
91    private method MotionLegend { x y }
92    private method Pan {option x y}
93    private method PanCamera {}
94    private method Pick {x y}
95    private method QuaternionToView { q } {
96        foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
97    }
98    private method Rebuild {}
99    private method ReceiveDataset { args }
100    private method ReceiveImage { args }
101    private method ReceiveLegend { colormap title vmin vmax size }
102    private method RequestLegend {}
103    private method Rotate {option x y}
104    private method SetColormap { dataobj comp }
105    private method ChangeColormap { dataobj comp color }
106    private method SetLegendTip { x y }
107    private method SetObjectStyle { dataobj comp }
108    private method Slice {option args}
109    private method SetOrientation { side }
110    private method ViewToQuaternion {} {
111        return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
112    }
113    private method Zoom {option}
114
115    private variable _arcball ""
116
117    private variable _dlist ""     ;    # list of data objects
118    private variable _obj2datasets
119    private variable _obj2ovride   ;    # maps dataobj => style override
120    private variable _datasets     ;    # contains all the dataobj-component
121                                   ;    # datasets in the server
122    private variable _colormaps    ;    # contains all the colormaps
123                                   ;    # in the server.
124    private variable _dataset2style    ;# maps dataobj-component to transfunc
125
126    private variable _click        ;    # info used for rotate operations
127    private variable _limits       ;    # autoscale min/max for all axes
128    private variable _view         ;    # view params for 3D view
129    private variable _settings
130    private variable _style;            # Array of current component styles.
131    private variable _initialStyle;     # Array of initial component styles.
132    private variable _reset 1;          # indicates if camera needs to be reset
133                                        # to starting position.
134
135    private variable _first ""     ;    # This is the topmost dataset.
136    private variable _start 0
137    private variable _title ""
138    private variable _seeds
139
140    common _downloadPopup;              # download options from popup
141    private common _hardcopy
142    private variable _width 0
143    private variable _height 0
144    private variable _resizePending 0
145    private variable _reseedPending 0
146    private variable _rotatePending 0
147    private variable _cutplanePending 0
148    private variable _legendPending 0
149    private variable _vectorFields
150    private variable _scalarFields
151    private variable _fields
152    private variable _curFldName ""
153    private variable _curFldLabel ""
154    private variable _field      ""
155    private variable _numSeeds 200
156    private variable _colorMode "vmag";#  Mode of colormap (vmag or scalar)
157}
158
159itk::usual VtkStreamlinesViewer {
160    keep -background -foreground -cursor -font
161    keep -plotbackground -plotforeground
162}
163
164# ----------------------------------------------------------------------
165# CONSTRUCTOR
166# ----------------------------------------------------------------------
167itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
168    package require vtk
169    set _serverType "vtkvis"
170
171    EnableWaitDialog 2000
172
173    # Rebuild event
174    $_dispatcher register !rebuild
175    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
176
177    # Resize event
178    $_dispatcher register !resize
179    $_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
180
181    # Reseed event
182    $_dispatcher register !reseed
183    $_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
184
185    # Rotate event
186    $_dispatcher register !rotate
187    $_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
188
189    # Legend event
190    $_dispatcher register !legend
191    $_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
192
193    # X-Cutplane event
194    $_dispatcher register !xcutplane
195    $_dispatcher dispatch $this !xcutplane \
196        "[itcl::code $this AdjustSetting -cutplanexposition]; list"
197
198    # Y-Cutplane event
199    $_dispatcher register !ycutplane
200    $_dispatcher dispatch $this !ycutplane \
201        "[itcl::code $this AdjustSetting -cutplaneyposition]; list"
202
203    # Z-Cutplane event
204    $_dispatcher register !zcutplane
205    $_dispatcher dispatch $this !zcutplane \
206        "[itcl::code $this AdjustSetting -cutplanezposition]; list"
207
208    #
209    # Populate parser with commands handle incoming requests
210    #
211    $_parser alias image [itcl::code $this ReceiveImage]
212    $_parser alias dataset [itcl::code $this ReceiveDataset]
213    $_parser alias legend [itcl::code $this ReceiveLegend]
214
215    # Initialize the view to some default parameters.
216    array set _view {
217        -ortho           0
218        -qw              0.853553
219        -qx              -0.353553
220        -qy              0.353553
221        -qz              0.146447
222        -xpan            0
223        -ypan            0
224        -zoom            1.0
225    }
226    set _arcball [blt::arcball create 100 100]
227    $_arcball quaternion [ViewToQuaternion]
228
229    array set _settings [subst {
230        -axesvisible                1
231        -axislabelsvisible          1
232        -axisminorticks             1
233        -axismode                   "static"
234        -cutplaneedges              0
235        -cutplanelighting           1
236        -cutplaneopacity            100
237        -cutplanevisible            0
238        -cutplanewireframe          0
239        -cutplanexposition          50
240        -cutplanexvisible           1
241        -cutplaneyposition          50
242        -cutplaneyvisible           1
243        -cutplanezposition          50
244        -cutplanezvisible           1
245        -legendvisible              1
246        -streamlineslighting        1
247        -streamlinesmode            lines
248        -streamlinesnumseeds        200
249        -streamlinesopacity         100
250        -streamlinesscale           1
251        -streamlinesseedsvisible    0
252        -streamlinesvisible         1
253        -volumeedges                0
254        -volumelighting             1
255        -volumeopacity              40
256        -volumevisible              1
257        -volumewireframe            0
258        -xgrid                      0
259        -ygrid                      0
260        -zgrid                      0
261    }]
262
263    itk_component add view {
264        canvas $itk_component(plotarea).view \
265            -highlightthickness 0 -borderwidth 0
266    } {
267        usual
268        ignore -highlightthickness -borderwidth  -background
269    }
270
271    itk_component add fieldmenu {
272        menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
273            -tearoff no
274    } {
275        usual
276        ignore -background -foreground -relief -tearoff
277    }
278    set c $itk_component(view)
279    bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
280    bind $c <4> [itcl::code $this Zoom in 0.25]
281    bind $c <5> [itcl::code $this Zoom out 0.25]
282    bind $c <KeyPress-Left>  [list %W xview scroll 10 units]
283    bind $c <KeyPress-Right> [list %W xview scroll -10 units]
284    bind $c <KeyPress-Up>    [list %W yview scroll 10 units]
285    bind $c <KeyPress-Down>  [list %W yview scroll -10 units]
286    bind $c <Enter> "focus %W"
287    bind $c <Control-F1> [itcl::code $this ToggleConsole]
288
289    # Fix the scrollregion in case we go off screen
290    $c configure -scrollregion [$c bbox all]
291
292    set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
293    set _map(cwidth) -1
294    set _map(cheight) -1
295    set _map(zoom) 1.0
296    set _map(original) ""
297
298    set f [$itk_component(main) component controls]
299    itk_component add reset {
300        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
301            -highlightthickness 0 \
302            -image [Rappture::icon reset-view] \
303            -command [itcl::code $this Zoom reset]
304    } {
305        usual
306        ignore -highlightthickness
307    }
308    pack $itk_component(reset) -side top -padx 2 -pady 2
309    Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
310
311    itk_component add zoomin {
312        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
313            -highlightthickness 0 \
314            -image [Rappture::icon zoom-in] \
315            -command [itcl::code $this Zoom in]
316    } {
317        usual
318        ignore -highlightthickness
319    }
320    pack $itk_component(zoomin) -side top -padx 2 -pady 2
321    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
322
323    itk_component add zoomout {
324        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
325            -highlightthickness 0 \
326            -image [Rappture::icon zoom-out] \
327            -command [itcl::code $this Zoom out]
328    } {
329        usual
330        ignore -highlightthickness
331    }
332    pack $itk_component(zoomout) -side top -padx 2 -pady 2
333    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
334
335    itk_component add volume {
336        Rappture::PushButton $f.volume \
337            -onimage [Rappture::icon volume-on] \
338            -offimage [Rappture::icon volume-off] \
339            -variable [itcl::scope _settings(-volumevisible)] \
340            -command [itcl::code $this AdjustSetting -volumevisible]
341    }
342    $itk_component(volume) select
343    Rappture::Tooltip::for $itk_component(volume) \
344        "Don't display the volume"
345    pack $itk_component(volume) -padx 2 -pady 2
346
347    itk_component add streamlines {
348        Rappture::PushButton $f.streamlines \
349            -onimage [Rappture::icon streamlines-on] \
350            -offimage [Rappture::icon streamlines-off] \
351            -variable [itcl::scope _settings(-streamlinesvisible)] \
352            -command [itcl::code $this AdjustSetting -streamlinesvisible] \
353    }
354    $itk_component(streamlines) select
355    Rappture::Tooltip::for $itk_component(streamlines) \
356        "Toggle the streamlines on/off"
357    pack $itk_component(streamlines) -padx 2 -pady 2
358
359    itk_component add cutplane {
360        Rappture::PushButton $f.cutplane \
361            -onimage [Rappture::icon cutbutton] \
362            -offimage [Rappture::icon cutbutton] \
363            -variable [itcl::scope _settings(-cutplanevisible)] \
364            -command [itcl::code $this AdjustSetting -cutplanevisible]
365    }
366    Rappture::Tooltip::for $itk_component(cutplane) \
367        "Show/Hide cutplanes"
368    pack $itk_component(cutplane) -padx 2 -pady 2
369
370
371    if { [catch {
372        BuildVolumeTab
373        BuildStreamsTab
374        BuildCutplaneTab
375        BuildAxisTab
376        BuildCameraTab
377    } errs] != 0 } {
378        puts stderr errs=$errs
379    }
380    # Legend
381
382    set _image(legend) [image create photo]
383    itk_component add legend {
384        canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
385    } {
386        usual
387        ignore -highlightthickness
388        rename -background -plotbackground plotBackground Background
389    }
390
391    # Hack around the Tk panewindow.  The problem is that the requested
392    # size of the 3d view isn't set until an image is retrieved from
393    # the server.  So the panewindow uses the tiny size.
394    set w 10000
395    pack forget $itk_component(view)
396    blt::table $itk_component(plotarea) \
397        0,0 $itk_component(view) -fill both -reqwidth $w
398    blt::table configure $itk_component(plotarea) c1 -resize none
399
400    # Bindings for rotation via mouse
401    bind $itk_component(view) <ButtonPress-1> \
402        [itcl::code $this Rotate click %x %y]
403    bind $itk_component(view) <B1-Motion> \
404        [itcl::code $this Rotate drag %x %y]
405    bind $itk_component(view) <ButtonRelease-1> \
406        [itcl::code $this Rotate release %x %y]
407
408    # Bindings for panning via mouse
409    bind $itk_component(view) <ButtonPress-2> \
410        [itcl::code $this Pan click %x %y]
411    bind $itk_component(view) <B2-Motion> \
412        [itcl::code $this Pan drag %x %y]
413    bind $itk_component(view) <ButtonRelease-2> \
414        [itcl::code $this Pan release %x %y]
415
416    #bind $itk_component(view) <ButtonRelease-3> \
417    #    [itcl::code $this Pick %x %y]
418
419    # Bindings for panning via keyboard
420    bind $itk_component(view) <KeyPress-Left> \
421        [itcl::code $this Pan set -10 0]
422    bind $itk_component(view) <KeyPress-Right> \
423        [itcl::code $this Pan set 10 0]
424    bind $itk_component(view) <KeyPress-Up> \
425        [itcl::code $this Pan set 0 -10]
426    bind $itk_component(view) <KeyPress-Down> \
427        [itcl::code $this Pan set 0 10]
428    bind $itk_component(view) <Shift-KeyPress-Left> \
429        [itcl::code $this Pan set -2 0]
430    bind $itk_component(view) <Shift-KeyPress-Right> \
431        [itcl::code $this Pan set 2 0]
432    bind $itk_component(view) <Shift-KeyPress-Up> \
433        [itcl::code $this Pan set 0 -2]
434    bind $itk_component(view) <Shift-KeyPress-Down> \
435        [itcl::code $this Pan set 0 2]
436
437    # Bindings for zoom via keyboard
438    bind $itk_component(view) <KeyPress-Prior> \
439        [itcl::code $this Zoom out]
440    bind $itk_component(view) <KeyPress-Next> \
441        [itcl::code $this Zoom in]
442
443    bind $itk_component(view) <Enter> "focus $itk_component(view)"
444
445    if {[string equal "x11" [tk windowingsystem]]} {
446        # Bindings for zoom via mouse
447        bind $itk_component(view) <4> [itcl::code $this Zoom out]
448        bind $itk_component(view) <5> [itcl::code $this Zoom in]
449    }
450
451    set _image(download) [image create photo]
452
453    eval itk_initialize $args
454    Connect
455}
456
457# ----------------------------------------------------------------------
458# DESTRUCTOR
459# ----------------------------------------------------------------------
460itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
461    Disconnect
462    image delete $_image(plot)
463    image delete $_image(download)
464    catch { blt::arcball destroy $_arcball }
465}
466
467itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
468    if { $_width < 2 } {
469        set _width 500
470    }
471    if { $_height < 2 } {
472        set _height 500
473    }
474    set _start [clock clicks -milliseconds]
475    SendCmd "screen size $_width $_height"
476
477    set _legendPending 1
478    set _resizePending 0
479}
480
481itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
482    SendCmd "camera orient [ViewToQuaternion]"
483    set _rotatePending 0
484}
485
486itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
487    foreach dataset [CurrentDatasets -visible] {
488        foreach {dataobj comp} [split $dataset -] break
489        # This command works for either random or fmesh seeds
490        SendCmd "streamlines seed numpts $_numSeeds $dataset"
491    }
492    set _reseedPending 0
493}
494
495itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
496    set _width $w
497    set _height $h
498    $_arcball resize $w $h
499    if { !$_resizePending } {
500        set _resizePending 1
501        $_dispatcher event -after 400 !resize
502    }
503}
504
505itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
506    set _numSeeds $numPoints
507    if { !$_reseedPending } {
508        set _reseedPending 1
509        $_dispatcher event -after 600 !reseed
510    }
511}
512
513set rotate_delay 100
514
515itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
516    QuaternionToView $q
517    if { !$_rotatePending } {
518        set _rotatePending 1
519        global rotate_delay
520        $_dispatcher event -after $rotate_delay !rotate
521    }
522}
523
524itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
525    if { !$_cutplanePending } {
526        set _cutplanePending 1
527        $_dispatcher event -after 100 !${axis}cutplane
528    }
529}
530
531# ----------------------------------------------------------------------
532# USAGE: add <dataobj> ?<settings>?
533#
534# Clients use this to add a data object to the plot.  The optional
535# <settings> are used to configure the plot.  Allowed settings are
536# -color, -brightness, -width, -linestyle, and -raise.
537# ----------------------------------------------------------------------
538itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
539    array set params {
540        -color auto
541        -width 1
542        -linestyle solid
543        -brightness 0
544        -raise 0
545        -description ""
546        -param ""
547        -type ""
548    }
549    array set params $settings
550    set params(-description) ""
551    set params(-param) ""
552    array set params $settings
553
554    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
555        # can't handle -autocolors yet
556        set params(-color) black
557    }
558    set pos [lsearch -exact $_dlist $dataobj]
559    if {$pos < 0} {
560        lappend _dlist $dataobj
561    }
562    set _obj2ovride($dataobj-color) $params(-color)
563    set _obj2ovride($dataobj-width) $params(-width)
564    set _obj2ovride($dataobj-raise) $params(-raise)
565    $_dispatcher event -idle !rebuild
566}
567
568
569# ----------------------------------------------------------------------
570# USAGE: delete ?<dataobj1> <dataobj2> ...?
571#
572#       Clients use this to delete a dataobj from the plot.  If no dataobjs
573#       are specified, then all dataobjs are deleted.  No data objects are
574#       deleted.  They are only removed from the display list.
575#
576# ----------------------------------------------------------------------
577itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
578    if { [llength $args] == 0} {
579        set args $_dlist
580    }
581    # Delete all specified dataobjs
582    set changed 0
583    foreach dataobj $args {
584        set pos [lsearch -exact $_dlist $dataobj]
585        if { $pos < 0 } {
586            continue;                   # Don't know anything about it.
587        }
588        # Remove it from the dataobj list.
589        set _dlist [lreplace $_dlist $pos $pos]
590        array unset _obj2ovride $dataobj-*
591        array unset _settings $dataobj-*
592        set changed 1
593    }
594    # If anything changed, then rebuild the plot
595    if { $changed } {
596        $_dispatcher event -idle !rebuild
597    }
598}
599
600# ----------------------------------------------------------------------
601# USAGE: get ?-objects?
602# USAGE: get ?-visible?
603# USAGE: get ?-image view?
604#
605# Clients use this to query the list of objects being plotted, in
606# order from bottom to top of this result.  The optional "-image"
607# flag can also request the internal images being shown.
608# ----------------------------------------------------------------------
609itcl::body Rappture::VtkStreamlinesViewer::get {args} {
610    if {[llength $args] == 0} {
611        set args "-objects"
612    }
613
614    set op [lindex $args 0]
615    switch -- $op {
616        "-objects" {
617            # put the dataobj list in order according to -raise options
618            set dlist {}
619            foreach dataobj $_dlist {
620                if { ![IsValidObject $dataobj] } {
621                    continue
622                }
623                if {[info exists _obj2ovride($dataobj-raise)] &&
624                    $_obj2ovride($dataobj-raise)} {
625                    set dlist [linsert $dlist 0 $dataobj]
626                } else {
627                    lappend dlist $dataobj
628                }
629            }
630            return $dlist
631        }
632        "-visible" {
633            set dlist {}
634            foreach dataobj $_dlist {
635                if { ![IsValidObject $dataobj] } {
636                    continue
637                }
638                if { ![info exists _obj2ovride($dataobj-raise)] } {
639                    # No setting indicates that the object isn't visible.
640                    continue
641                }
642                # Otherwise use the -raise parameter to put the object to
643                # the front of the list.
644                if { $_obj2ovride($dataobj-raise) } {
645                    set dlist [linsert $dlist 0 $dataobj]
646                } else {
647                    lappend dlist $dataobj
648                }
649            }
650            return $dlist
651        }           
652        -image {
653            if {[llength $args] != 2} {
654                error "wrong # args: should be \"get -image view\""
655            }
656            switch -- [lindex $args end] {
657                view {
658                    return $_image(plot)
659                }
660                default {
661                    error "bad image name \"[lindex $args end]\": should be view"
662                }
663            }
664        }
665        default {
666            error "bad option \"$op\": should be -objects or -image"
667        }
668    }
669}
670
671# ----------------------------------------------------------------------
672# USAGE: scale ?<data1> <data2> ...?
673#
674# Sets the default limits for the overall plot according to the
675# limits of the data for all of the given <data> objects.  This
676# accounts for all objects--even those not showing on the screen.
677# Because of this, the limits are appropriate for all objects as
678# the user scans through data in the ResultSet viewer.
679# ----------------------------------------------------------------------
680itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
681    foreach dataobj $args {
682        foreach axis { x y z } {
683            set lim [$dataobj limits $axis]
684            if { ![info exists _limits($axis)] } {
685                set _limits($axis) $lim
686                continue
687            }
688            foreach {min max} $lim break
689            foreach {amin amax} $_limits($axis) break
690            if { $amin > $min } {
691                set amin $min
692            }
693            if { $amax < $max } {
694                set amax $max
695            }
696            set _limits($axis) [list $amin $amax]
697        }
698        foreach { fname lim } [$dataobj fieldlimits] {
699            if { ![info exists _limits($fname)] } {
700                set _limits($fname) $lim
701                continue
702            }
703            foreach {min max} $lim break
704            foreach {fmin fmax} $_limits($fname) break
705            if { $fmin > $min } {
706                set fmin $min
707            }
708            if { $fmax < $max } {
709                set fmax $max
710            }
711            set _limits($fname) [list $fmin $fmax]
712        }
713    }
714}
715
716# ----------------------------------------------------------------------
717# USAGE: download coming
718# USAGE: download controls <downloadCommand>
719# USAGE: download now
720#
721# Clients use this method to create a downloadable representation
722# of the plot.  Returns a list of the form {ext string}, where
723# "ext" is the file extension (indicating the type of data) and
724# "string" is the data itself.
725# ----------------------------------------------------------------------
726itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
727    switch $option {
728        coming {
729            if {[catch {
730                blt::winop snap $itk_component(plotarea) $_image(download)
731            }]} {
732                $_image(download) configure -width 1 -height 1
733                $_image(download) put #000000
734            }
735        }
736        controls {
737            set popup .vtkviewerdownload
738            if { ![winfo exists .vtkviewerdownload] } {
739                set inner [BuildDownloadPopup $popup [lindex $args 0]]
740            } else {
741                set inner [$popup component inner]
742            }
743            set _downloadPopup(image_controls) $inner.image_frame
744            set num [llength [get]]
745            set num [expr {($num == 1) ? "1 result" : "$num results"}]
746            set word [Rappture::filexfer::label downloadWord]
747            $inner.summary configure -text "$word $num in the following format:"
748            update idletasks            ;# Fix initial sizes
749            return $popup
750        }
751        now {
752            set popup .vtkviewerdownload
753            if {[winfo exists .vtkviewerdownload]} {
754                $popup deactivate
755            }
756            switch -- $_downloadPopup(format) {
757                "image" {
758                    return [$this GetImage [lindex $args 0]]
759                }
760                "vtk" {
761                    return [$this GetVtkData [lindex $args 0]]
762                }
763            }
764            return ""
765        }
766        default {
767            error "bad option \"$option\": should be coming, controls, now"
768        }
769    }
770}
771
772# ----------------------------------------------------------------------
773# USAGE: Connect ?<host:port>,<host:port>...?
774#
775# Clients use this method to establish a connection to a new
776# server, or to reestablish a connection to the previous server.
777# Any existing connection is automatically closed.
778# ----------------------------------------------------------------------
779itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
780    set _hosts [GetServerList "vtkvis"]
781    if { "" == $_hosts } {
782        return 0
783    }
784    set result [VisViewer::Connect $_hosts]
785    if { $result } {
786        if { $_reportClientInfo }  {
787            # Tell the server the viewer, hub, user and session.
788            # Do this immediately on connect before buffering any commands
789            global env
790
791            set info {}
792            set user "???"
793            if { [info exists env(USER)] } {
794                set user $env(USER)
795            }
796            set session "???"
797            if { [info exists env(SESSION)] } {
798                set session $env(SESSION)
799            }
800            lappend info "version" "$Rappture::version"
801            lappend info "build" "$Rappture::build"
802            lappend info "svnurl" "$Rappture::svnurl"
803            lappend info "installdir" "$Rappture::installdir"
804            lappend info "hub" [exec hostname]
805            lappend info "client" "vtkstreamlinesviewer"
806            lappend info "user" $user
807            lappend info "session" $session
808            SendCmd "clientinfo [list $info]"
809        }
810
811        set w [winfo width $itk_component(view)]
812        set h [winfo height $itk_component(view)]
813        EventuallyResize $w $h
814    }
815    return $result
816}
817
818#
819# isconnected --
820#
821#       Indicates if we are currently connected to the visualization server.
822#
823itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
824    return [VisViewer::IsConnected]
825}
826
827#
828# disconnect --
829#
830itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
831    Disconnect
832    set _reset 1
833}
834
835#
836# Disconnect --
837#
838#       Clients use this method to disconnect from the current rendering
839#       server.
840#
841itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
842    VisViewer::Disconnect
843
844    $_dispatcher cancel !rebuild
845    $_dispatcher cancel !resize
846    $_dispatcher cancel !reseed
847    $_dispatcher cancel !rotate
848    $_dispatcher cancel !xcutplane
849    $_dispatcher cancel !ycutplane
850    $_dispatcher cancel !zcutplane
851    $_dispatcher cancel !legend
852    # disconnected -- no more data sitting on server
853    array unset _datasets
854    array unset _data
855    array unset _colormaps
856    array unset _seeds
857    array unset _dataset2style
858    array unset _obj2datasets
859}
860
861# ----------------------------------------------------------------------
862# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
863#
864# Invoked automatically whenever the "image" command comes in from
865# the rendering server.  Indicates that binary image data with the
866# specified <size> will follow.
867# ----------------------------------------------------------------------
868itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
869    array set info {
870        -token "???"
871        -bytes 0
872        -type image
873    }
874    array set info $args
875    set bytes [ReceiveBytes $info(-bytes)]
876    if { $info(-type) == "image" } {
877        if 0 {
878            set f [open "last.ppm" "w"]
879            fconfigure $f -encoding binary
880            puts -nonewline $f $bytes
881            close $f
882        }
883        $_image(plot) configure -data $bytes
884        set time [clock seconds]
885        set date [clock format $time]
886        #puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"       
887        if { $_start > 0 } {
888            set finish [clock clicks -milliseconds]
889            #puts stderr "round trip time [expr $finish -$_start] milliseconds"
890            set _start 0
891        }
892    } elseif { $info(type) == "print" } {
893        set tag $this-print-$info(-token)
894        set _hardcopy($tag) $bytes
895    }
896    if { $_legendPending } {
897        RequestLegend
898    }
899}
900
901#
902# ReceiveDataset --
903#
904itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
905    if { ![isconnected] } {
906        return
907    }
908    set option [lindex $args 0]
909    switch -- $option {
910        "scalar" {
911            set option [lindex $args 1]
912            switch -- $option {
913                "world" {
914                    foreach { x y z value tag } [lrange $args 2 end] break
915                }
916                "pixel" {
917                    foreach { x y value tag } [lrange $args 2 end] break
918                }
919            }
920        }
921        "vector" {
922            set option [lindex $args 1]
923            switch -- $option {
924                "world" {
925                    foreach { x y z vx vy vz tag } [lrange $args 2 end] break
926                }
927                "pixel" {
928                    foreach { x y vx vy vz tag } [lrange $args 2 end] break
929                }
930            }
931        }
932        "names" {
933            foreach { name } [lindex $args 1] {
934                #puts stderr "Dataset: $name"
935            }
936        }
937        default {
938            error "unknown dataset option \"$option\" from server"
939        }
940    }
941}
942
943# ----------------------------------------------------------------------
944# USAGE: Rebuild
945#
946# Called automatically whenever something changes that affects the
947# data in the widget.  Clears any existing data and rebuilds the
948# widget to display new data.
949# ----------------------------------------------------------------------
950itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
951    update
952    set w [winfo width $itk_component(view)]
953    set h [winfo height $itk_component(view)]
954    if { $w < 2 || $h < 2 } {
955        $_dispatcher event -idle !rebuild
956        return
957    }
958
959    # Turn on buffering of commands to the server.  We don't want to
960    # be preempted by a server disconnect/reconnect (which automatically
961    # generates a new call to Rebuild).
962    StartBufferingCommands
963    set _legendPending 1
964
965    set _first ""
966    if { $_reset } {
967        set _width $w
968        set _height $h
969        $_arcball resize $w $h
970        DoResize
971        InitSettings -xgrid -ygrid -zgrid -axismode \
972            -axesvisible -axislabelsvisible -axisminorticks
973        # This "imgflush" is to force an image returned before vtkvis starts
974        # reading a (big) dataset.  This will display an empty plot with axes
975        # at the correct image size.
976        SendCmd "imgflush"
977    }
978
979    set _first ""
980    SendCmd "dataset visible 0"
981    foreach dataobj [get -objects] {
982        if { [info exists _obj2ovride($dataobj-raise)] &&  $_first == "" } {
983            set _first $dataobj
984        }
985        set _obj2datasets($dataobj) ""
986        foreach comp [$dataobj components] {
987            set tag $dataobj-$comp
988            if { ![info exists _datasets($tag)] } {
989                set bytes [$dataobj vtkdata $comp]
990                set length [string length $bytes]
991                if 0 {
992                    set f [open /tmp/vtkstreamlines.vtk "w"]
993                    fconfigure $f -translation binary -encoding binary
994                    puts -nonewline $f $bytes
995                    close $f
996                }
997                if { $_reportClientInfo }  {
998                    set info {}
999                    lappend info "tool_id"       [$dataobj hints toolid]
1000                    lappend info "tool_name"     [$dataobj hints toolname]
1001                    lappend info "tool_title"    [$dataobj hints tooltitle]
1002                    lappend info "tool_command"  [$dataobj hints toolcommand]
1003                    lappend info "tool_revision" [$dataobj hints toolrevision]
1004                    lappend info "dataset_label" [$dataobj hints label]
1005                    lappend info "dataset_size"  $length
1006                    lappend info "dataset_tag"   $tag
1007                    SendCmd "clientinfo [list $info]"
1008                }
1009                SendCmd "dataset add $tag data follows $length"
1010                append _outbuf $bytes
1011                set _datasets($tag) 1
1012                SetObjectStyle $dataobj $comp
1013            }
1014            lappend _obj2datasets($dataobj) $tag
1015            if { [info exists _obj2ovride($dataobj-raise)] } {
1016                SendCmd "dataset visible 1 $tag"
1017            }
1018        }
1019    }
1020    if {"" != $_first} {
1021        set location [$_first hints camera]
1022        if { $location != "" } {
1023            array set view $location
1024        }
1025        foreach axis { x y z } {
1026            set label [$_first hints ${axis}label]
1027            if { $label != "" } {
1028                SendCmd [list axis name $axis $label]
1029            }
1030            set units [$_first hints ${axis}units]
1031            if { $units != "" } {
1032                SendCmd [list axis units $axis $units]
1033            }
1034        }
1035        $itk_component(field) choices delete 0 end
1036        $itk_component(fieldmenu) delete 0 end
1037        array unset _fields
1038        set _curFldName ""
1039        foreach cname [$_first components] {
1040            foreach fname [$_first fieldnames $cname] {
1041                if { [info exists _fields($fname)] } {
1042                    continue
1043                }
1044                foreach { label units components } \
1045                    [$_first fieldinfo $fname] break
1046                $itk_component(field) choices insert end "$fname" "$label"
1047                $itk_component(fieldmenu) add radiobutton -label "$label" \
1048                    -value $label -variable [itcl::scope _curFldLabel] \
1049                    -selectcolor red \
1050                    -activebackground $itk_option(-plotbackground) \
1051                    -activeforeground $itk_option(-plotforeground) \
1052                    -font "Arial 8" \
1053                    -command [itcl::code $this Combo invoke]
1054                set _fields($fname) [list $label $units $components]
1055                if { $_curFldName == "" } {
1056                    set _curFldName $fname
1057                    set _curFldLabel $label
1058                }
1059            }
1060        }
1061        $itk_component(field) value $_curFldLabel
1062    }
1063
1064    if { $_reset } {
1065        InitSettings -streamlinesseedsvisible -streamlinesopacity \
1066            -streamlinesvisible -streamlinescolormap \
1067            -streamlineslighting \
1068            -streamlinescolormap -field \
1069            -volumevisible -volumeedges -volumelighting -volumeopacity \
1070            -volumewireframe \
1071            -cutplanevisible \
1072            -cutplanexposition -cutplaneyposition -cutplanezposition \
1073            -cutplanexvisible -cutplaneyvisible -cutplanezvisible
1074
1075        # Reset the camera and other view parameters
1076        $_arcball quaternion [ViewToQuaternion]
1077        if {$_view(-ortho)} {
1078            SendCmd "camera mode ortho"
1079        } else {
1080            SendCmd "camera mode persp"
1081        }
1082        DoRotate
1083        PanCamera
1084        Zoom reset
1085        SendCmd "camera reset"
1086        set _reset 0
1087    }
1088    # Actually write the commands to the server socket.  If it fails, we don't
1089    # care.  We're finished here.
1090    blt::busy hold $itk_component(hull)
1091    StopBufferingCommands
1092    blt::busy release $itk_component(hull)
1093}
1094
1095# ----------------------------------------------------------------------
1096# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1097#
1098# Returns a list of server IDs for the current datasets being displayed.  This
1099# is normally a single ID, but it might be a list of IDs if the current data
1100# object has multiple components.
1101# ----------------------------------------------------------------------
1102itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1103    set flag [lindex $args 0]
1104    switch -- $flag {
1105        "-all" {
1106            if { [llength $args] > 1 } {
1107                error "CurrentDatasets: can't specify dataobj after \"-all\""
1108            }
1109            set dlist [get -objects]
1110        }
1111        "-visible" {
1112            if { [llength $args] > 1 } {
1113                set dlist {}
1114                set args [lrange $args 1 end]
1115                foreach dataobj $args {
1116                    if { [info exists _obj2ovride($dataobj-raise)] } {
1117                        lappend dlist $dataobj
1118                    }
1119                }
1120            } else {
1121                set dlist [get -visible]
1122            }
1123        }           
1124        default {
1125            set dlist $args
1126        }
1127    }
1128    set rlist ""
1129    foreach dataobj $dlist {
1130        foreach comp [$dataobj components] {
1131            set tag $dataobj-$comp
1132            if { [info exists _datasets($tag)] && $_datasets($tag) } {
1133                lappend rlist $tag
1134            }
1135        }
1136    }
1137    return $rlist
1138}
1139
1140# ----------------------------------------------------------------------
1141# USAGE: Zoom in
1142# USAGE: Zoom out
1143# USAGE: Zoom reset
1144#
1145# Called automatically when the user clicks on one of the zoom
1146# controls for this widget.  Changes the zoom for the current view.
1147# ----------------------------------------------------------------------
1148itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1149    switch -- $option {
1150        "in" {
1151            set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1152            SendCmd "camera zoom $_view(-zoom)"
1153        }
1154        "out" {
1155            set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1156            SendCmd "camera zoom $_view(-zoom)"
1157        }
1158        "reset" {
1159            array set _view {
1160                -qw      0.853553
1161                -qx      -0.353553
1162                -qy      0.353553
1163                -qz      0.146447
1164                -xpan    0
1165                -ypan    0
1166                -zoom    1.0
1167            }
1168            if { $_first != "" } {
1169                set location [$_first hints camera]
1170                if { $location != "" } {
1171                    array set _view $location
1172                }
1173            }
1174            $_arcball quaternion [ViewToQuaternion]
1175            DoRotate
1176            SendCmd "camera reset"
1177        }
1178    }
1179}
1180
1181itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1182    set x $_view(-xpan)
1183    set y $_view(-ypan)
1184    SendCmd "camera pan $x $y"
1185}
1186
1187# ----------------------------------------------------------------------
1188# USAGE: Rotate click <x> <y>
1189# USAGE: Rotate drag <x> <y>
1190# USAGE: Rotate release <x> <y>
1191#
1192# Called automatically when the user clicks/drags/releases in the
1193# plot area.  Moves the plot according to the user's actions.
1194# ----------------------------------------------------------------------
1195itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1196    switch -- $option {
1197        "click" {
1198            $itk_component(view) configure -cursor fleur
1199            set _click(x) $x
1200            set _click(y) $y
1201        }
1202        "drag" {
1203            if {[array size _click] == 0} {
1204                Rotate click $x $y
1205            } else {
1206                set w [winfo width $itk_component(view)]
1207                set h [winfo height $itk_component(view)]
1208                if {$w <= 0 || $h <= 0} {
1209                    return
1210                }
1211
1212                if {[catch {
1213                    # this fails sometimes for no apparent reason
1214                    set dx [expr {double($x-$_click(x))/$w}]
1215                    set dy [expr {double($y-$_click(y))/$h}]
1216                }]} {
1217                    return
1218                }
1219                if { $dx == 0 && $dy == 0 } {
1220                    return
1221                }
1222                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1223                EventuallyRotate $q
1224                set _click(x) $x
1225                set _click(y) $y
1226            }
1227        }
1228        "release" {
1229            Rotate drag $x $y
1230            $itk_component(view) configure -cursor ""
1231            catch {unset _click}
1232        }
1233        default {
1234            error "bad option \"$option\": should be click, drag, release"
1235        }
1236    }
1237}
1238
1239itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1240    foreach tag [CurrentDatasets -visible] {
1241        SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1242    }
1243}
1244
1245# ----------------------------------------------------------------------
1246# USAGE: $this Pan click x y
1247#        $this Pan drag x y
1248#        $this Pan release x y
1249#
1250# Called automatically when the user clicks on one of the zoom
1251# controls for this widget.  Changes the zoom for the current view.
1252# ----------------------------------------------------------------------
1253itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1254    switch -- $option {
1255        "set" {
1256            set w [winfo width $itk_component(view)]
1257            set h [winfo height $itk_component(view)]
1258            set x [expr $x / double($w)]
1259            set y [expr $y / double($h)]
1260            set _view(-xpan) [expr $_view(-xpan) + $x]
1261            set _view(-ypan) [expr $_view(-ypan) + $y]
1262            PanCamera
1263            return
1264        }
1265        "click" {
1266            set _click(x) $x
1267            set _click(y) $y
1268            $itk_component(view) configure -cursor hand1
1269        }
1270        "drag" {
1271            if { ![info exists _click(x)] } {
1272                set _click(x) $x
1273            }
1274            if { ![info exists _click(y)] } {
1275                set _click(y) $y
1276            }
1277            set w [winfo width $itk_component(view)]
1278            set h [winfo height $itk_component(view)]
1279            set dx [expr ($_click(x) - $x)/double($w)]
1280            set dy [expr ($_click(y) - $y)/double($h)]
1281            set _click(x) $x
1282            set _click(y) $y
1283            set _view(-xpan) [expr $_view(-xpan) - $dx]
1284            set _view(-ypan) [expr $_view(-ypan) - $dy]
1285            PanCamera
1286        }
1287        "release" {
1288            Pan drag $x $y
1289            $itk_component(view) configure -cursor ""
1290        }
1291        default {
1292            error "unknown option \"$option\": should set, click, drag, or release"
1293        }
1294    }
1295}
1296
1297# ----------------------------------------------------------------------
1298# USAGE: InitSettings <what> ?<value>?
1299#
1300# Used internally to update rendering settings whenever parameters
1301# change in the popup settings panel.  Sends the new settings off
1302# to the back end.
1303# ----------------------------------------------------------------------
1304itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1305    foreach spec $args {
1306        if { [info exists _settings($_first${spec})] } {
1307            # Reset global setting with dataobj specific setting
1308            set _settings($spec) $_settings($_first${spec})
1309        }
1310        AdjustSetting $spec
1311    }
1312}
1313
1314#
1315# AdjustSetting --
1316#
1317#       Changes/updates a specific setting in the widget.  There are
1318#       usually user-setable option.  Commands are sent to the render
1319#       server.
1320#
1321itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1322    if { ![isconnected] } {
1323        return
1324    }
1325    switch -- $what {
1326        "-axesvisible" {
1327            set bool $_settings($what)
1328            SendCmd "axis visible all $bool"
1329        }
1330        "-axislabelsvisible" {
1331            set bool $_settings($what)
1332            SendCmd "axis labels all $bool"
1333        }
1334        "-axisminorticks" {
1335            set bool $_settings($what)
1336            SendCmd "axis minticks all $bool"
1337        }
1338        "-axismode" {
1339            set mode [$itk_component(axismode) value]
1340            set mode [$itk_component(axismode) translate $mode]
1341            set _settings($what) $mode
1342            SendCmd "axis flymode $mode"
1343        }
1344        "-cutplaneedges" {
1345            set bool $_settings($what)
1346            SendCmd "cutplane edges $bool"
1347        }
1348        "-cutplanevisible" {
1349            set bool $_settings($what)
1350            SendCmd "cutplane visible $bool"
1351        }
1352        "-cutplanewireframe" {
1353            set bool $_settings($what)
1354            SendCmd "cutplane wireframe $bool"
1355        }
1356        "-cutplanelighting" {
1357            set bool $_settings($what)
1358            SendCmd "cutplane lighting $bool"
1359        }
1360        "-cutplaneopacity" {
1361            set val $_settings($what)
1362            set sval [expr { 0.01 * double($val) }]
1363            SendCmd "cutplane opacity $sval"
1364        }
1365        "-cutplanexvisible" - "-cutplaneyvisible" - "-cutplanezvisible" {
1366            set axis [string range $what 9 9]
1367            set bool $_settings($what)
1368            if { $bool } {
1369                $itk_component(${axis}CutScale) configure -state normal \
1370                    -troughcolor white
1371            } else {
1372                $itk_component(${axis}CutScale) configure -state disabled \
1373                    -troughcolor grey82
1374            }
1375            SendCmd "cutplane axis $axis $bool"
1376        }
1377        "-cutplanexposition" - "-cutplaneyposition" - "-cutplanezposition" {
1378            set axis [string range $what 9 9]
1379            set pos [expr $_settings($what) * 0.01]
1380            SendCmd "cutplane slice ${axis} ${pos}"
1381            set _cutplanePending 0
1382        }
1383        "-field" {
1384            set label [$itk_component(field) value]
1385            set fname [$itk_component(field) translate $label]
1386            set _settings($what) $fname
1387            if { [info exists _fields($fname)] } {
1388                foreach { label units components } $_fields($fname) break
1389                if { $components > 1 } {
1390                    set _colorMode vmag
1391                } else {
1392                    set _colorMode scalar
1393                }
1394                set _curFldName $fname
1395                set _curFldLabel $label
1396            } else {
1397                puts stderr "unknown field \"$fname\""
1398                return
1399            }
1400            # Get the new limits because the field changed.
1401            if { ![info exists _limits($_curFldName)] } {
1402                SendCmd "dataset maprange all"
1403            } else {
1404                SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1405            }
1406            SendCmd "streamlines colormode $_colorMode $_curFldName"
1407            SendCmd "cutplane colormode $_colorMode $_curFldName"
1408            DrawLegend
1409        }
1410        "-streamlinesseedsvisible" {
1411            set bool $_settings($what)
1412            SendCmd "streamlines seed visible $bool"
1413        }
1414        "-streamlinesnumseeds" {
1415            set density $_settings($what)
1416            EventuallyReseed $density
1417        }
1418        "-streamlinesvisible" {
1419            set bool $_settings($what)
1420            SendCmd "streamlines visible $bool"
1421            if { $bool } {
1422                Rappture::Tooltip::for $itk_component(streamlines) \
1423                    "Hide the streamlines"
1424            } else {
1425                Rappture::Tooltip::for $itk_component(streamlines) \
1426                    "Show the streamlines"
1427            }
1428        }
1429        "-streamlinesmode" {
1430            set mode [$itk_component(streammode) value]
1431            set _settings($what) $mode
1432            switch -- $mode {
1433                "lines" {
1434                    SendCmd "streamlines lines"
1435                }
1436                "ribbons" {
1437                    SendCmd "streamlines ribbons 3 0"
1438                }
1439                "tubes" {
1440                    SendCmd "streamlines tubes 5 3"
1441                }
1442            }
1443        }
1444        "-streamlinescolormap" {
1445            set colormap [$itk_component(colormap) value]
1446            set _settings($what) $colormap
1447            foreach dataset [CurrentDatasets -visible $_first] {
1448                foreach {dataobj comp} [split $dataset -] break
1449                ChangeColormap $dataobj $comp $colormap
1450            }
1451            set _legendPending 1
1452        }
1453        "-streamlinesopacity" {
1454            set val $_settings($what)
1455            set sval [expr { 0.01 * double($val) }]
1456            SendCmd "streamlines opacity $sval"
1457        }
1458        "-streamlinesscale" {
1459            set val $_settings($what)
1460            set sval [expr { 0.01 * double($val) }]
1461            SendCmd "streamlines scale $sval $sval $sval"
1462        }
1463        "-streamlineslighting" {
1464            set bool $_settings($what)
1465            SendCmd "streamlines lighting $bool"
1466        }
1467        "-volumeopacity" {
1468            set val $_settings($what)
1469            set sval [expr { 0.01 * double($val) }]
1470            SendCmd "polydata opacity $sval"
1471        }
1472        "-volumewireframe" {
1473            set bool $_settings($what)
1474            SendCmd "polydata wireframe $bool"
1475        }
1476        "-volumevisible" {
1477            set bool $_settings($what)
1478            SendCmd "polydata visible $bool"
1479            if { $bool } {
1480                Rappture::Tooltip::for $itk_component(volume) \
1481                    "Hide the volume"
1482            } else {
1483                Rappture::Tooltip::for $itk_component(volume) \
1484                    "Show the volume"
1485            }
1486        }
1487        "-volumelighting" {
1488            set bool $_settings($what)
1489            SendCmd "polydata lighting $bool"
1490        }
1491        "-volumeedges" {
1492            set bool $_settings($what)
1493            SendCmd "polydata edges $bool"
1494        }
1495        "-xgrid" - "-ygrid" - "-zgrid" {
1496            set axis [string range $what 1 1]
1497            set bool $_settings($what)
1498            SendCmd "axis grid $axis $bool"
1499        }
1500        default {
1501            error "don't know how to fix $what"
1502        }
1503    }
1504}
1505
1506#
1507# RequestLegend --
1508#
1509#       Request a new legend from the server.  The size of the legend
1510#       is determined from the height of the canvas.  It will be rotated
1511#       to be vertical when drawn.
1512#
1513itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1514    set font "Arial 8"
1515    set lineht [font metrics $font -linespace]
1516    set w 12
1517    set h [expr {$_height - 3 * ($lineht + 2)}]
1518    if { $h < 1 } {
1519        return
1520    }
1521    # Set the legend on the first streamlines dataset.
1522    foreach dataset [CurrentDatasets -visible $_first] {
1523        foreach {dataobj comp} [split $dataset -] break
1524        if { [info exists _dataset2style($dataset)] } {
1525            SendCmdNoWait \
1526                "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1527            break;
1528        }
1529    }
1530}
1531
1532#
1533# ChangeColormap --
1534#
1535itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1536    set tag $dataobj-$comp
1537    if { ![info exist _style($tag)] } {
1538        error "no initial colormap"
1539    }
1540    array set style $_style($tag)
1541    set style(-color) $color
1542    set _style($tag) [array get style]
1543    SetColormap $dataobj $comp
1544}
1545
1546#
1547# SetColormap --
1548#
1549itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1550    array set style {
1551        -color BCGYR
1552        -levels 6
1553        -opacity 1.0
1554    }
1555    set tag $dataobj-$comp
1556    if { ![info exists _initialStyle($tag)] } {
1557        # Save the initial component style.
1558        set _initialStyle($tag) [$dataobj style $comp]
1559    }
1560
1561    # Override defaults with initial style defined in xml.
1562    array set style $_initialStyle($tag)
1563
1564    if { ![info exists _style($tag)] } {
1565        set _style($tag) [array get style]
1566    }
1567    # Override initial style with current style.
1568    array set style $_style($tag)
1569
1570    set name "$style(-color):$style(-levels):$style(-opacity)"
1571    if { ![info exists _colormaps($name)] } {
1572        BuildColormap $name [array get style]
1573        set _colormaps($name) 1
1574    }
1575    if { ![info exists _dataset2style($tag)] ||
1576         $_dataset2style($tag) != $name } {
1577        SendCmd "streamlines colormap $name $tag"
1578        SendCmd "cutplane colormap $name $tag"
1579        set _dataset2style($tag) $name
1580    }
1581}
1582
1583#
1584# BuildColormap --
1585#
1586itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1587    array set style $styles
1588    set cmap [ColorsToColormap $style(-color)]
1589    if { [llength $cmap] == 0 } {
1590        set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1591    }
1592    if { ![info exists _settings(-volumeopacity)] } {
1593        set _settings(-volumeopacity) $style(-opacity)
1594    }
1595    set max $_settings(-volumeopacity)
1596
1597    set wmap "0.0 1.0 1.0 1.0"
1598    SendCmd "colormap add $name { $cmap } { $wmap }"
1599}
1600
1601# ----------------------------------------------------------------------
1602# CONFIGURATION OPTION: -plotbackground
1603# ----------------------------------------------------------------------
1604itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1605    if { [isconnected] } {
1606        set rgb [Color2RGB $itk_option(-plotbackground)]
1607        SendCmd "screen bgcolor $rgb"
1608    }
1609}
1610
1611# ----------------------------------------------------------------------
1612# CONFIGURATION OPTION: -plotforeground
1613# ----------------------------------------------------------------------
1614itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1615    if { [isconnected] } {
1616        set rgb [Color2RGB $itk_option(-plotforeground)]
1617        SendCmd "axis color all $rgb"
1618        SendCmd "outline color $rgb"
1619        SendCmd "cutplane color $rgb"
1620    }
1621}
1622
1623itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1624
1625    set fg [option get $itk_component(hull) font Font]
1626    #set bfg [option get $itk_component(hull) boldFont Font]
1627
1628    set inner [$itk_component(main) insert end \
1629        -title "Volume Settings" \
1630        -icon [Rappture::icon volume-on]]
1631    $inner configure -borderwidth 4
1632
1633    checkbutton $inner.volume \
1634        -text "Show Volume" \
1635        -variable [itcl::scope _settings(-volumevisible)] \
1636        -command [itcl::code $this AdjustSetting -volumevisible] \
1637        -font "Arial 9"
1638
1639    checkbutton $inner.wireframe \
1640        -text "Show Wireframe" \
1641        -variable [itcl::scope _settings(-volumewireframe)] \
1642        -command [itcl::code $this AdjustSetting -volumewireframe] \
1643        -font "Arial 9"
1644
1645    checkbutton $inner.lighting \
1646        -text "Enable Lighting" \
1647        -variable [itcl::scope _settings(-volumelighting)] \
1648        -command [itcl::code $this AdjustSetting -volumelighting] \
1649        -font "Arial 9"
1650
1651    checkbutton $inner.edges \
1652        -text "Show Edges" \
1653        -variable [itcl::scope _settings(-volumeedges)] \
1654        -command [itcl::code $this AdjustSetting -volumeedges] \
1655        -font "Arial 9"
1656
1657    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1658    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1659        -variable [itcl::scope _settings(-volumeopacity)] \
1660        -width 10 \
1661        -showvalue off \
1662        -command [itcl::code $this AdjustSetting -volumeopacity]
1663
1664    blt::table $inner \
1665        0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1666        1,0 $inner.lighting  -anchor w -pady 2 -cspan 2 \
1667        2,0 $inner.edges     -anchor w -pady 2 -cspan 3 \
1668        3,0 $inner.opacity_l -anchor w -pady 2 \
1669        3,1 $inner.opacity   -fill x   -pady 2
1670
1671    blt::table configure $inner r* c* -resize none
1672    blt::table configure $inner r4 c1 -resize expand
1673}
1674
1675itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1676
1677    set fg [option get $itk_component(hull) font Font]
1678    #set bfg [option get $itk_component(hull) boldFont Font]
1679
1680    set inner [$itk_component(main) insert end \
1681        -title "Streams Settings" \
1682        -icon [Rappture::icon streamlines-on]]
1683    $inner configure -borderwidth 4
1684
1685    checkbutton $inner.streamlines \
1686        -text "Show Streamlines" \
1687        -variable [itcl::scope _settings(-streamlinesvisible)] \
1688        -command [itcl::code $this AdjustSetting -streamlinesvisible] \
1689        -font "Arial 9"
1690   
1691    checkbutton $inner.lighting \
1692        -text "Enable Lighting" \
1693        -variable [itcl::scope _settings(-streamlineslighting)] \
1694        -command [itcl::code $this AdjustSetting -streamlineslighting] \
1695        -font "Arial 9"
1696
1697    checkbutton $inner.seeds \
1698        -text "Show Seeds" \
1699        -variable [itcl::scope _settings(-streamlinesseedsvisible)] \
1700        -command [itcl::code $this AdjustSetting -streamlinesseedsvisible] \
1701        -font "Arial 9"
1702
1703    label $inner.mode_l -text "Mode" -font "Arial 9"
1704    itk_component add streammode {
1705        Rappture::Combobox $inner.mode -width 10 -editable no
1706    }
1707    $inner.mode choices insert end \
1708        "lines"    "lines" \
1709        "ribbons"   "ribbons" \
1710        "tubes"     "tubes"
1711    $itk_component(streammode) value $_settings(-streamlinesmode)
1712    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -streamlinesmode]
1713
1714    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1715    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1716        -variable [itcl::scope _settings(-streamlinesopacity)] \
1717        -width 10 \
1718        -showvalue off \
1719        -command [itcl::code $this AdjustSetting -streamlinesopacity]
1720
1721    label $inner.density_l -text "No. Seeds" -font "Arial 9"
1722    ::scale $inner.density -from 1 -to 1000 -orient horizontal \
1723        -variable [itcl::scope _settings(-streamlinesnumseeds)] \
1724        -width 10 \
1725        -showvalue on \
1726        -command [itcl::code $this AdjustSetting -streamlinesnumseeds]
1727
1728    label $inner.scale_l -text "Scale" -font "Arial 9"
1729    ::scale $inner.scale -from 1 -to 100 -orient horizontal \
1730        -variable [itcl::scope _settings(-streamlinesscale)] \
1731        -width 10 \
1732        -showvalue off \
1733        -command [itcl::code $this AdjustSetting -streamlinesscale]
1734
1735    label $inner.field_l -text "Color by" -font "Arial 9"
1736    itk_component add field {
1737        Rappture::Combobox $inner.field -width 10 -editable no
1738    }
1739    bind $inner.field <<Value>> \
1740        [itcl::code $this AdjustSetting -field]
1741
1742    label $inner.colormap_l -text "Colormap" -font "Arial 9"
1743    itk_component add colormap {
1744        Rappture::Combobox $inner.colormap -width 10 -editable no
1745    }
1746    $inner.colormap choices insert end [GetColormapList]
1747
1748    $itk_component(colormap) value "BCGYR"
1749    bind $inner.colormap <<Value>> \
1750        [itcl::code $this AdjustSetting -streamlinescolormap]
1751
1752    blt::table $inner \
1753        0,0 $inner.field_l     -anchor w -pady 2  \
1754        0,1 $inner.field       -fill x   -pady 2  \
1755        1,0 $inner.colormap_l  -anchor w -pady 2  \
1756        1,1 $inner.colormap    -fill x   -pady 2  \
1757        2,0 $inner.mode_l      -anchor w -pady 2  \
1758        2,1 $inner.mode        -fill x   -pady 2  \
1759        3,0 $inner.opacity_l   -anchor w -pady 2  \
1760        3,1 $inner.opacity     -fill x -pady 2 \
1761        5,0 $inner.lighting    -anchor w -pady 2 -cspan 2 \
1762        6,0 $inner.seeds       -anchor w -pady 2 -cspan 2 \
1763        7,0 $inner.density_l   -anchor w -pady 2  \
1764        7,1 $inner.density     -fill x   -pady 2  \
1765
1766    blt::table configure $inner r* c* -resize none
1767    blt::table configure $inner r10 c1 c2 -resize expand
1768}
1769
1770itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1771
1772    set fg [option get $itk_component(hull) font Font]
1773    #set bfg [option get $itk_component(hull) boldFont Font]
1774
1775    set inner [$itk_component(main) insert end \
1776        -title "Axis Settings" \
1777        -icon [Rappture::icon axis2]]
1778    $inner configure -borderwidth 4
1779
1780    checkbutton $inner.visible \
1781        -text "Axes" \
1782        -variable [itcl::scope _settings(-axesvisible)] \
1783        -command [itcl::code $this AdjustSetting -axesvisible] \
1784        -font "Arial 9"
1785
1786    checkbutton $inner.labels \
1787        -text "Axis Labels" \
1788        -variable [itcl::scope _settings(-axislabelsvisible)] \
1789        -command [itcl::code $this AdjustSetting -axislabelsvisible] \
1790        -font "Arial 9"
1791    label $inner.grid_l -text "Grid" -font "Arial 9"
1792    checkbutton $inner.xgrid \
1793        -text "X" \
1794        -variable [itcl::scope _settings(-xgrid)] \
1795        -command [itcl::code $this AdjustSetting -xgrid] \
1796        -font "Arial 9"
1797    checkbutton $inner.ygrid \
1798        -text "Y" \
1799        -variable [itcl::scope _settings(-ygrid)] \
1800        -command [itcl::code $this AdjustSetting -ygrid] \
1801        -font "Arial 9"
1802    checkbutton $inner.zgrid \
1803        -text "Z" \
1804        -variable [itcl::scope _settings(-zgrid)] \
1805        -command [itcl::code $this AdjustSetting -zgrid] \
1806        -font "Arial 9"
1807    checkbutton $inner.minorticks \
1808        -text "Minor Ticks" \
1809        -variable [itcl::scope _settings(-axisminorticks)] \
1810        -command [itcl::code $this AdjustSetting -axisminorticks] \
1811        -font "Arial 9"
1812
1813    label $inner.mode_l -text "Mode" -font "Arial 9"
1814
1815    itk_component add axismode {
1816        Rappture::Combobox $inner.mode -width 10 -editable no
1817    }
1818    $inner.mode choices insert end \
1819        "static_triad"    "static" \
1820        "closest_triad"   "closest" \
1821        "furthest_triad"  "farthest" \
1822        "outer_edges"     "outer"         
1823    $itk_component(axismode) value $_settings(-axismode)
1824    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1825
1826    blt::table $inner \
1827        0,0 $inner.visible -anchor w -cspan 4 \
1828        1,0 $inner.labels  -anchor w -cspan 4 \
1829        2,0 $inner.minorticks  -anchor w -cspan 4 \
1830        4,0 $inner.grid_l  -anchor w \
1831        4,1 $inner.xgrid   -anchor w \
1832        4,2 $inner.ygrid   -anchor w \
1833        4,3 $inner.zgrid   -anchor w \
1834        5,0 $inner.mode_l  -anchor w -padx { 2 0 } \
1835        5,1 $inner.mode    -fill x   -cspan 3
1836
1837    blt::table configure $inner r* c* -resize none
1838    blt::table configure $inner r7 c6 -resize expand
1839    blt::table configure $inner r3 -height 0.125i
1840}
1841
1842itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1843    set inner [$itk_component(main) insert end \
1844        -title "Camera Settings" \
1845        -icon [Rappture::icon camera]]
1846    $inner configure -borderwidth 4
1847
1848    label $inner.view_l -text "view" -font "Arial 9"
1849    set f [frame $inner.view]
1850    foreach side { front back left right top bottom } {
1851        button $f.$side  -image [Rappture::icon view$side] \
1852            -command [itcl::code $this SetOrientation $side]
1853        Rappture::Tooltip::for $f.$side "Change the view to $side"
1854        pack $f.$side -side left
1855    }
1856
1857    blt::table $inner \
1858        0,0 $inner.view_l -anchor e -pady 2 \
1859        0,1 $inner.view -anchor w -pady 2
1860    blt::table configure $inner r0 -resize none
1861
1862    set labels { qx qy qz qw xpan ypan zoom }
1863    set row 1
1864    foreach tag $labels {
1865        label $inner.${tag}label -text $tag -font "Arial 9"
1866        entry $inner.${tag} -font "Arial 9"  -bg white \
1867            -textvariable [itcl::scope _view(-$tag)]
1868        bind $inner.${tag} <Return> \
1869            [itcl::code $this camera set -${tag}]
1870        bind $inner.${tag} <KP_Enter> \
1871            [itcl::code $this camera set -${tag}]
1872        blt::table $inner \
1873            $row,0 $inner.${tag}label -anchor e -pady 2 \
1874            $row,1 $inner.${tag} -anchor w -pady 2
1875        blt::table configure $inner r$row -resize none
1876        incr row
1877    }
1878    checkbutton $inner.ortho \
1879        -text "Orthographic Projection" \
1880        -variable [itcl::scope _view(-ortho)] \
1881        -command [itcl::code $this camera set -ortho] \
1882        -font "Arial 9"
1883    blt::table $inner \
1884            $row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1885    blt::table configure $inner r$row -resize none
1886    incr row
1887
1888    blt::table configure $inner c* -resize none
1889    blt::table configure $inner c2 -resize expand
1890    blt::table configure $inner r$row -resize expand
1891}
1892
1893itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1894
1895    set fg [option get $itk_component(hull) font Font]
1896   
1897    set inner [$itk_component(main) insert end \
1898        -title "Cutplane Settings" \
1899        -icon [Rappture::icon cutbutton]]
1900
1901    $inner configure -borderwidth 4
1902
1903    checkbutton $inner.visible \
1904        -text "Show Cutplanes" \
1905        -variable [itcl::scope _settings(-cutplanevisible)] \
1906        -command [itcl::code $this AdjustSetting -cutplanevisible] \
1907        -font "Arial 9"
1908
1909    checkbutton $inner.wireframe \
1910        -text "Show Wireframe" \
1911        -variable [itcl::scope _settings(-cutplanewireframe)] \
1912        -command [itcl::code $this AdjustSetting -cutplanewireframe] \
1913        -font "Arial 9"
1914
1915    checkbutton $inner.lighting \
1916        -text "Enable Lighting" \
1917        -variable [itcl::scope _settings(-cutplanelighting)] \
1918        -command [itcl::code $this AdjustSetting -cutplanelighting] \
1919        -font "Arial 9"
1920
1921    checkbutton $inner.edges \
1922        -text "Show Edges" \
1923        -variable [itcl::scope _settings(-cutplaneedges)] \
1924        -command [itcl::code $this AdjustSetting -cutplaneedges] \
1925        -font "Arial 9"
1926
1927    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1928    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1929        -variable [itcl::scope _settings(-cutplaneopacity)] \
1930        -width 10 \
1931        -showvalue off \
1932        -command [itcl::code $this AdjustSetting -cutplaneopacity]
1933    $inner.opacity set $_settings(-cutplaneopacity)
1934
1935    # X-value slicer...
1936    itk_component add xCutButton {
1937        Rappture::PushButton $inner.xbutton \
1938            -onimage [Rappture::icon x-cutplane-red] \
1939            -offimage [Rappture::icon x-cutplane-red] \
1940            -command [itcl::code $this AdjustSetting -cutplanexvisible] \
1941            -variable [itcl::scope _settings(-cutplanexvisible)]
1942    }
1943    Rappture::Tooltip::for $itk_component(xCutButton) \
1944        "Toggle the X-axis cutplane on/off"
1945    $itk_component(xCutButton) select
1946
1947    itk_component add xCutScale {
1948        ::scale $inner.xval -from 100 -to 0 \
1949            -width 10 -orient vertical -showvalue yes \
1950            -borderwidth 1 -highlightthickness 0 \
1951            -command [itcl::code $this EventuallySetCutplane x] \
1952            -variable [itcl::scope _settings(-cutplanexposition)] \
1953            -foreground red3 -font "Arial 9 bold"
1954    } {
1955        usual
1956        ignore -borderwidth -highlightthickness -foreground -font
1957    }
1958    # Set the default cutplane value before disabling the scale.
1959    $itk_component(xCutScale) set 50
1960    $itk_component(xCutScale) configure -state disabled
1961    Rappture::Tooltip::for $itk_component(xCutScale) \
1962        "@[itcl::code $this Slice tooltip x]"
1963
1964    # Y-value slicer...
1965    itk_component add yCutButton {
1966        Rappture::PushButton $inner.ybutton \
1967            -onimage [Rappture::icon y-cutplane-green] \
1968            -offimage [Rappture::icon y-cutplane-green] \
1969            -command [itcl::code $this AdjustSetting -cutplaneyvisible] \
1970            -variable [itcl::scope _settings(-cutplaneyvisible)]
1971    }
1972    Rappture::Tooltip::for $itk_component(yCutButton) \
1973        "Toggle the Y-axis cutplane on/off"
1974    $itk_component(yCutButton) select
1975
1976    itk_component add yCutScale {
1977        ::scale $inner.yval -from 100 -to 0 \
1978            -width 10 -orient vertical -showvalue yes \
1979            -borderwidth 1 -highlightthickness 0 \
1980            -command [itcl::code $this EventuallySetCutplane y] \
1981            -variable [itcl::scope _settings(-cutplaneyposition)] \
1982            -foreground green3 -font "Arial 9 bold"
1983    } {
1984        usual
1985        ignore -borderwidth -highlightthickness -foreground -font
1986    }
1987    Rappture::Tooltip::for $itk_component(yCutScale) \
1988        "@[itcl::code $this Slice tooltip y]"
1989    # Set the default cutplane value before disabling the scale.
1990    $itk_component(yCutScale) set 50
1991    $itk_component(yCutScale) configure -state disabled
1992
1993    # Z-value slicer...
1994    itk_component add zCutButton {
1995        Rappture::PushButton $inner.zbutton \
1996            -onimage [Rappture::icon z-cutplane-blue] \
1997            -offimage [Rappture::icon z-cutplane-blue] \
1998            -command [itcl::code $this AdjustSetting -cutplanezvisible] \
1999            -variable [itcl::scope _settings(-cutplanezvisible)]
2000    }
2001    Rappture::Tooltip::for $itk_component(zCutButton) \
2002        "Toggle the Z-axis cutplane on/off"
2003    $itk_component(zCutButton) select
2004
2005    itk_component add zCutScale {
2006        ::scale $inner.zval -from 100 -to 0 \
2007            -width 10 -orient vertical -showvalue yes \
2008            -borderwidth 1 -highlightthickness 0 \
2009            -command [itcl::code $this EventuallySetCutplane z] \
2010            -variable [itcl::scope _settings(-cutplanezposition)] \
2011            -foreground blue3 -font "Arial 9 bold"
2012    } {
2013        usual
2014        ignore -borderwidth -highlightthickness -foreground -font
2015    }
2016    $itk_component(zCutScale) set 50
2017    $itk_component(zCutScale) configure -state disabled
2018    Rappture::Tooltip::for $itk_component(zCutScale) \
2019        "@[itcl::code $this Slice tooltip z]"
2020
2021    blt::table $inner \
2022        0,0 $inner.lighting             -anchor w -pady 2 -cspan 4 \
2023        1,0 $inner.wireframe            -anchor w -pady 2 -cspan 4 \
2024        2,0 $inner.edges                -anchor w -pady 2 -cspan 4 \
2025        3,0 $inner.opacity_l            -anchor w -pady 2 -cspan 1 \
2026        3,1 $inner.opacity              -fill x   -pady 2 -cspan 3 \
2027        4,0 $itk_component(xCutButton)  -anchor w -padx 2 -pady 2 \
2028        5,0 $itk_component(yCutButton)  -anchor w -padx 2 -pady 2 \
2029        6,0 $itk_component(zCutButton)  -anchor w -padx 2 -pady 2 \
2030        4,1 $itk_component(xCutScale)   -fill y -rspan 4 \
2031        4,2 $itk_component(yCutScale)   -fill y -rspan 4 \
2032        4,3 $itk_component(zCutScale)   -fill y -rspan 4 \
2033
2034    blt::table configure $inner r* c* -resize none
2035    blt::table configure $inner r7 c4 -resize expand
2036}
2037
2038#
2039#  camera --
2040#
2041itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2042    switch -- $option {
2043        "show" {
2044            puts [array get _view]
2045        }
2046        "set" {
2047            set what [lindex $args 0]
2048            set x $_view($what)
2049            set code [catch { string is double $x } result]
2050            if { $code != 0 || !$result } {
2051                return
2052            }
2053            switch -- $what {
2054                "-ortho" {
2055                    if {$_view($what)} {
2056                        SendCmd "camera mode ortho"
2057                    } else {
2058                        SendCmd "camera mode persp"
2059                    }
2060                }
2061                "-xpan" - "-ypan" {
2062                    PanCamera
2063                }
2064                "-qx" - "-qy" - "-qz" - "-qw" {
2065                    set q [ViewToQuaternion]
2066                    $_arcball quaternion $q
2067                    EventuallyRotate $q
2068                }
2069                "-zoom" {
2070                    SendCmd "camera zoom $_view($what)"
2071                }
2072            }
2073        }
2074    }
2075}
2076
2077itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2078    set bytes ""
2079    foreach dataobj [get] {
2080        foreach comp [$dataobj components] {
2081            set tag $dataobj-$comp
2082            set contents [$dataobj vtkdata $comp]
2083            append bytes "$contents\n"
2084        }
2085    }
2086    return [list .vtk $bytes]
2087}
2088
2089itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2090    if { [image width $_image(download)] > 0 &&
2091         [image height $_image(download)] > 0 } {
2092        set bytes [$_image(download) data -format "jpeg -quality 100"]
2093        set bytes [Rappture::encoding::decode -as b64 $bytes]
2094        return [list .jpg $bytes]
2095    }
2096    return ""
2097}
2098
2099itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2100    Rappture::Balloon $popup \
2101        -title "[Rappture::filexfer::label downloadWord] as..."
2102    set inner [$popup component inner]
2103    label $inner.summary -text "" -anchor w
2104    radiobutton $inner.vtk_button -text "VTK data file" \
2105        -variable [itcl::scope _downloadPopup(format)] \
2106        -font "Helvetica 9 " \
2107        -value vtk 
2108    Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2109    radiobutton $inner.image_button -text "Image File" \
2110        -variable [itcl::scope _downloadPopup(format)] \
2111        -value image
2112    Rappture::Tooltip::for $inner.image_button \
2113        "Save as digital image."
2114
2115    button $inner.ok -text "Save" \
2116        -highlightthickness 0 -pady 2 -padx 3 \
2117        -command $command \
2118        -compound left \
2119        -image [Rappture::icon download]
2120
2121    button $inner.cancel -text "Cancel" \
2122        -highlightthickness 0 -pady 2 -padx 3 \
2123        -command [list $popup deactivate] \
2124        -compound left \
2125        -image [Rappture::icon cancel]
2126
2127    blt::table $inner \
2128        0,0 $inner.summary -cspan 2  \
2129        1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2130        2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2131        4,1 $inner.cancel -width .9i -fill y \
2132        4,0 $inner.ok -padx 2 -width .9i -fill y
2133    blt::table configure $inner r3 -height 4
2134    blt::table configure $inner r4 -pady 4
2135    raise $inner.image_button
2136    $inner.vtk_button invoke
2137    return $inner
2138}
2139
2140itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2141    # Parse style string.
2142    set tag $dataobj-$comp
2143    set style [$dataobj style $comp]
2144    array set settings {
2145        -color \#808080
2146        -edges 0
2147        -edgecolor black
2148        -linewidth 1.0
2149        -opacity 0.4
2150        -wireframe 0
2151        -lighting 1
2152        -seeds 1
2153        -seedcolor white
2154        -visible 1
2155    }
2156    if { $dataobj != $_first } {
2157        set settings(-opacity) 1
2158    }
2159    array set settings $style
2160    StartBufferingCommands
2161    SendCmd "streamlines add $tag"
2162    SendCmd "streamlines seed visible off $tag"
2163    set seeds [$dataobj hints seeds]
2164    if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2165        set length [string length $seeds]
2166        SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2167        append _outbuf $seeds
2168        set _seeds($dataobj) 1
2169    }
2170    SendCmd "cutplane add $tag"
2171    SendCmd "polydata add $tag"
2172    SendCmd "polydata colormode constant {} $tag"
2173    set _settings(-volumeedges) $settings(-edges)
2174    set _settings(-volumelighting) $settings(-lighting)
2175    set _settings(-volumeopacity) $settings(-opacity)
2176    set _settings(-volumewireframe) $settings(-wireframe)
2177    set _settings(-volumeopacity) [expr $settings(-opacity) * 100.0]
2178    StopBufferingCommands
2179    SetColormap $dataobj $comp
2180}
2181
2182itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2183    if {[catch {$dataobj isa Rappture::Field} valid] != 0 || !$valid} {
2184        return 0
2185    }
2186    return 1
2187}
2188
2189# ----------------------------------------------------------------------
2190# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2191#
2192# Invoked automatically whenever the "legend" command comes in from
2193# the rendering server.  Indicates that binary image data with the
2194# specified <size> will follow.
2195# ----------------------------------------------------------------------
2196itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2197    set _legendPending 0
2198    set _title $title
2199    regsub {\(mag\)} $title "" _title
2200    if { [IsConnected] } {
2201        set bytes [ReceiveBytes $size]
2202        if { ![info exists _image(legend)] } {
2203            set _image(legend) [image create photo]
2204        }
2205        $_image(legend) configure -data $bytes
2206        #puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2207        if { [catch {DrawLegend} errs] != 0 } {
2208            puts stderr errs=$errs
2209        }
2210    }
2211}
2212
2213#
2214# DrawLegend --
2215#
2216#       Draws the legend in it's own canvas which resides to the right
2217#       of the contour plot area.
2218#
2219itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2220    set fname $_curFldName
2221    set c $itk_component(view)
2222    set w [winfo width $c]
2223    set h [winfo height $c]
2224    set font "Arial 8"
2225    set lineht [font metrics $font -linespace]
2226   
2227    if { [info exists _fields($fname)] } {
2228        foreach { title units } $_fields($fname) break
2229        if { $units != "" } {
2230            set title [format "%s (%s)" $title $units]
2231        }
2232    } else {
2233        set title $fname
2234    }
2235    if { $_settings(-legendvisible) } {
2236        set x [expr $w - 2]
2237        if { [$c find withtag "legend"] == "" } {
2238            set y 2
2239            $c create text $x $y \
2240                -anchor ne \
2241                -fill $itk_option(-plotforeground) -tags "title legend" \
2242                -font $font
2243            incr y $lineht
2244            $c create text $x $y \
2245                -anchor ne \
2246                -fill $itk_option(-plotforeground) -tags "vmax legend" \
2247                -font $font
2248            incr y $lineht
2249            $c create image $x $y \
2250                -anchor ne \
2251                -image $_image(legend) -tags "colormap legend"
2252            $c create text $x [expr {$h-2}] \
2253                -anchor se \
2254                -fill $itk_option(-plotforeground) -tags "vmin legend" \
2255                -font $font
2256            #$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2257            $c bind colormap <Leave> [itcl::code $this LeaveLegend]
2258            $c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2259        }
2260        $c bind title <ButtonPress> [itcl::code $this Combo post]
2261        $c bind title <Enter> [itcl::code $this Combo activate]
2262        $c bind title <Leave> [itcl::code $this Combo deactivate]
2263        # Reset the item coordinates according the current size of the plot.
2264        $c itemconfigure title -text $title
2265        if { [info exists _limits($_curFldName)] } {
2266            foreach {vmin vmax} $_limits($_curFldName) break
2267            $c itemconfigure vmin -text [format %g $vmin]
2268            $c itemconfigure vmax -text [format %g $vmax]
2269        }
2270        set y 2
2271        $c coords title $x $y
2272        incr y $lineht
2273        $c coords vmax $x $y
2274        incr y $lineht
2275        $c coords colormap $x $y
2276        $c coords vmin $x [expr {$h - 2}]
2277    }
2278}
2279
2280#
2281# EnterLegend --
2282#
2283itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2284    SetLegendTip $x $y
2285}
2286
2287#
2288# MotionLegend --
2289#
2290itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2291    Rappture::Tooltip::tooltip cancel
2292    set c $itk_component(view)
2293    SetLegendTip $x $y
2294}
2295
2296#
2297# LeaveLegend --
2298#
2299itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2300    Rappture::Tooltip::tooltip cancel
2301    .rappturetooltip configure -icon ""
2302}
2303
2304#
2305# SetLegendTip --
2306#
2307itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2308    set c $itk_component(view)
2309    set w [winfo width $c]
2310    set h [winfo height $c]
2311    set font "Arial 8"
2312    set lineht [font metrics $font -linespace]
2313   
2314    set imgHeight [image height $_image(legend)]
2315    set coords [$c coords colormap]
2316    set imgX [expr $w - [image width $_image(legend)] - 2]
2317    set imgY [expr $y - 2 * ($lineht + 2)]
2318
2319    if { [info exists _fields($_title)] } {
2320        foreach { title units } $_fields($_title) break
2321        if { $units != "" } {
2322            set title [format "%s (%s)" $title $units]
2323        }
2324    } else {
2325        set title $_title
2326    }
2327    # Make a swatch of the selected color
2328    if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2329        #puts stderr "out of range: $imgY"
2330        return
2331    }
2332    if { ![info exists _image(swatch)] } {
2333        set _image(swatch) [image create photo -width 24 -height 24]
2334    }
2335    set color [eval format "\#%02x%02x%02x" $pixel]
2336    $_image(swatch) put black  -to 0 0 23 23
2337    $_image(swatch) put $color -to 1 1 22 22
2338    .rappturetooltip configure -icon $_image(swatch)
2339
2340    # Compute the value of the point
2341    if { [info exists _limits($_curFldName)] } {
2342        foreach {vmin vmax} $_limits($_curFldName) break
2343        set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2344        set value [expr $t * ($vmax - $vmin) + $vmin]
2345    } else {
2346        set value 0.0
2347    }
2348    set tipx [expr $x + 15]
2349    set tipy [expr $y - 5]
2350    Rappture::Tooltip::text $c "$title $value"
2351    Rappture::Tooltip::tooltip show $c +$tipx,+$tipy   
2352}
2353
2354# ----------------------------------------------------------------------
2355# USAGE: Slice move x|y|z <newval>
2356#
2357# Called automatically when the user drags the slider to move the
2358# cut plane that slices 3D data.  Gets the current value from the
2359# slider and moves the cut plane to the appropriate point in the
2360# data set.
2361# ----------------------------------------------------------------------
2362itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2363    switch -- $option {
2364        "move" {
2365            set axis [lindex $args 0]
2366            set newval [lindex $args 1]
2367            if {[llength $args] != 2} {
2368                error "wrong # args: should be \"Slice move x|y|z newval\""
2369            }
2370            set newpos [expr {0.01*$newval}]
2371            SendCmd "cutplane slice $axis $newpos"
2372        }
2373        "tooltip" {
2374            set axis [lindex $args 0]
2375            set val [$itk_component(${axis}CutScale) get]
2376            return "Move the [string toupper $axis] cut plane.\nCurrently:  $axis = $val%"
2377        }
2378        default {
2379            error "bad option \"$option\": should be axis, move, or tooltip"
2380        }
2381    }
2382}
2383
2384# ----------------------------------------------------------------------
2385# USAGE: _dropdown post
2386# USAGE: _dropdown unpost
2387# USAGE: _dropdown select
2388#
2389# Used internally to handle the dropdown list for this combobox.  The
2390# post/unpost options are invoked when the list is posted or unposted
2391# to manage the relief of the controlling button.  The select option
2392# is invoked whenever there is a selection from the list, to assign
2393# the value back to the gauge.
2394# ----------------------------------------------------------------------
2395itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2396    set c $itk_component(view)
2397    switch -- $option {
2398        post {
2399            foreach { x1 y1 x2 y2 } [$c bbox title] break
2400            set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2401            set x [expr $x1 + [winfo rootx $itk_component(view)]]
2402            set y [expr $y2 + [winfo rooty $itk_component(view)]]
2403            tk_popup $itk_component(fieldmenu) $x $y
2404        }
2405        activate {
2406            $c itemconfigure title -fill red
2407        }
2408        deactivate {
2409            $c itemconfigure title -fill white
2410        }
2411        invoke {
2412            $itk_component(field) value $_curFldLabel
2413            AdjustSetting -field
2414        }
2415        default {
2416            error "bad option \"$option\": should be post, unpost, select"
2417        }
2418    }
2419}
2420
2421itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2422    array set positions {
2423        front "1 0 0 0"
2424        back  "0 0 1 0"
2425        left  "0.707107 0 -0.707107 0"
2426        right "0.707107 0 0.707107 0"
2427        top   "0.707107 -0.707107 0 0"
2428        bottom "0.707107 0.707107 0 0"
2429    }
2430    foreach name { -qw -qx -qy -qz } value $positions($side) {
2431        set _view($name) $value
2432    }
2433    set q [ViewToQuaternion]
2434    $_arcball quaternion $q
2435    SendCmd "camera orient $q"
2436    SendCmd "camera reset"
2437    set _view(-xpan) 0
2438    set _view(-ypan) 0
2439    set _view(-zoom) 1.0
2440}
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