source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 3833

Last change on this file since 3833 was 3833, checked in by ldelgass, 8 years ago

Fix clients to use vtkvis 1.5 protocol

File size: 83.3 KB
Line 
1# -*- mode: tcl; indent-tabs-mode: nil -*-
2# ----------------------------------------------------------------------
3#  COMPONENT: vtkviewer - Vtk drawing 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) 2004-2012  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    protected method Connect {}
65    protected method CurrentDatasets {args}
66    protected method Disconnect {}
67    protected method DoResize {}
68    protected method DoReseed {}
69    protected method DoRotate {}
70    protected method AdjustSetting {what {value ""}}
71    protected method InitSettings { args  }
72    protected method Pan {option x y}
73    protected method Pick {x y}
74    protected method Rebuild {}
75    protected method ReceiveDataset { args }
76    protected method ReceiveImage { args }
77    protected method ReceiveLegend { colormap title vmin vmax size }
78    protected method Rotate {option x y}
79    protected method Zoom {option}
80
81    # The following methods are only used by this class.
82    private method BuildAxisTab {}
83    private method BuildCameraTab {}
84    private method BuildColormap { name colors }
85    private method BuildCutplaneTab {}
86    private method BuildDownloadPopup { widget command }
87    private method BuildStreamsTab {}
88    private method BuildVolumeTab {}
89    private method DrawLegend {}
90    private method Combo { option }
91    private method EnterLegend { x y }
92    private method EventuallyResize { w h }
93    private method EventuallyReseed { numPoints }
94    private method EventuallyRotate { q }
95    private method EventuallySetCutplane { axis args }
96    private method GetImage { args }
97    private method GetVtkData { args }
98    private method IsValidObject { dataobj }
99    private method LeaveLegend {}
100    private method MotionLegend { x y }
101    private method PanCamera {}
102    private method RequestLegend {}
103    private method SetColormap { dataobj comp }
104    private method ChangeColormap { dataobj comp color }
105    private method SetLegendTip { x y }
106    private method SetObjectStyle { dataobj comp }
107    private method Slice {option args}
108    private method SetOrientation { side }
109
110    private variable _arcball ""
111
112    private variable _dlist ""     ;    # list of data objects
113    private variable _obj2datasets
114    private variable _obj2ovride   ;    # maps dataobj => style override
115    private variable _datasets     ;    # contains all the dataobj-component
116                                   ;    # datasets in the server
117    private variable _colormaps    ;    # contains all the colormaps
118                                   ;    # in the server.
119    private variable _dataset2style    ;# maps dataobj-component to transfunc
120
121    private variable _click        ;    # info used for rotate operations
122    private variable _limits       ;    # autoscale min/max for all axes
123    private variable _view         ;    # view params for 3D view
124    private variable _settings
125    private variable _style;            # Array of current component styles.
126    private variable _initialStyle;     # Array of initial component styles.
127    private variable _reset 1;          # indicates if camera needs to be reset
128                                        # to starting position.
129
130    private variable _first ""     ;    # This is the topmost dataset.
131    private variable _start 0
132    private variable _title ""
133    private variable _seeds
134
135    common _downloadPopup;              # download options from popup
136    private common _hardcopy
137    private variable _width 0
138    private variable _height 0
139    private variable _resizePending 0
140    private variable _reseedPending 0
141    private variable _rotatePending 0
142    private variable _cutplanePending 0
143    private variable _legendPending 0
144    private variable _vectorFields
145    private variable _scalarFields
146    private variable _fields
147    private variable _curFldName ""
148    private variable _curFldLabel ""
149    private variable _field      ""
150    private variable _numSeeds 200
151    private variable _colorMode "vmag";#  Mode of colormap (vmag or scalar)
152}
153
154itk::usual VtkStreamlinesViewer {
155    keep -background -foreground -cursor -font
156    keep -plotbackground -plotforeground
157}
158
159# ----------------------------------------------------------------------
160# CONSTRUCTOR
161# ----------------------------------------------------------------------
162itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
163    package require vtk
164    set _serverType "vtkvis"
165
166    EnableWaitDialog 2000
167
168    # Rebuild event
169    $_dispatcher register !rebuild
170    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
171
172    # Resize event
173    $_dispatcher register !resize
174    $_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
175
176    # Reseed event
177    $_dispatcher register !reseed
178    $_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
179
180    # Rotate event
181    $_dispatcher register !rotate
182    $_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
183
184    # Legend event
185    $_dispatcher register !legend
186    $_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
187
188    # X-Cutplane event
189    $_dispatcher register !xcutplane
190    $_dispatcher dispatch $this !xcutplane \
191        "[itcl::code $this AdjustSetting cutplaneXPosition]; list"
192
193    # Y-Cutplane event
194    $_dispatcher register !ycutplane
195    $_dispatcher dispatch $this !ycutplane \
196        "[itcl::code $this AdjustSetting cutplaneYPosition]; list"
197
198    # Z-Cutplane event
199    $_dispatcher register !zcutplane
200    $_dispatcher dispatch $this !zcutplane \
201        "[itcl::code $this AdjustSetting cutplaneZPosition]; list"
202
203    #
204    # Populate parser with commands handle incoming requests
205    #
206    $_parser alias image [itcl::code $this ReceiveImage]
207    $_parser alias dataset [itcl::code $this ReceiveDataset]
208    $_parser alias legend [itcl::code $this ReceiveLegend]
209
210    # Initialize the view to some default parameters.
211    array set _view {
212        qw              0.853553
213        qx              -0.353553
214        qy              0.353553
215        qz              0.146447
216        zoom            1.0
217        xpan            0
218        ypan            0
219        ortho           0
220    }
221    set _arcball [blt::arcball create 100 100]
222    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
223    $_arcball quaternion $q
224
225    array set _settings [subst {
226        axesVisible             1
227        axisLabelsVisible       1
228        axisXGrid               0
229        axisYGrid               0
230        axisZGrid               0
231        cutplaneEdges           0
232        cutplaneLighting        1
233        cutplaneOpacity         100
234        cutplaneVisible         0
235        cutplaneWireframe       0
236        cutplaneXPosition       50
237        cutplaneXVisible        1
238        cutplaneYPosition       50
239        cutplaneYVisible        1
240        cutplaneZPosition       50
241        cutplaneZVisible        1
242        legendVisible           1
243        streamlinesLighting     1
244        streamlinesMode         lines
245        streamlinesNumSeeds     200
246        streamlinesOpacity      100
247        streamlinesScale        1
248        streamlinesSeedsVisible 0
249        streamlinesVisible      1
250        volumeEdges             0
251        volumeLighting          1
252        volumeOpacity           40
253        volumeVisible           1
254        volumeWireframe         0
255    }]
256
257    itk_component add view {
258        canvas $itk_component(plotarea).view \
259            -highlightthickness 0 -borderwidth 0
260    } {
261        usual
262        ignore -highlightthickness -borderwidth  -background
263    }
264
265    itk_component add fieldmenu {
266        menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
267            -tearoff no
268    } {
269        usual
270        ignore -background -foreground -relief -tearoff
271    }
272    set c $itk_component(view)
273    bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
274    bind $c <4> [itcl::code $this Zoom in 0.25]
275    bind $c <5> [itcl::code $this Zoom out 0.25]
276    bind $c <KeyPress-Left>  [list %W xview scroll 10 units]
277    bind $c <KeyPress-Right> [list %W xview scroll -10 units]
278    bind $c <KeyPress-Up>    [list %W yview scroll 10 units]
279    bind $c <KeyPress-Down>  [list %W yview scroll -10 units]
280    bind $c <Enter> "focus %W"
281    bind $c <Control-F1> [itcl::code $this ToggleConsole]
282
283    # Fix the scrollregion in case we go off screen
284    $c configure -scrollregion [$c bbox all]
285
286    set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
287    set _map(cwidth) -1
288    set _map(cheight) -1
289    set _map(zoom) 1.0
290    set _map(original) ""
291
292    set f [$itk_component(main) component controls]
293    itk_component add reset {
294        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
295            -highlightthickness 0 \
296            -image [Rappture::icon reset-view] \
297            -command [itcl::code $this Zoom reset]
298    } {
299        usual
300        ignore -highlightthickness
301    }
302    pack $itk_component(reset) -side top -padx 2 -pady 2
303    Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
304
305    itk_component add zoomin {
306        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
307            -highlightthickness 0 \
308            -image [Rappture::icon zoom-in] \
309            -command [itcl::code $this Zoom in]
310    } {
311        usual
312        ignore -highlightthickness
313    }
314    pack $itk_component(zoomin) -side top -padx 2 -pady 2
315    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
316
317    itk_component add zoomout {
318        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
319            -highlightthickness 0 \
320            -image [Rappture::icon zoom-out] \
321            -command [itcl::code $this Zoom out]
322    } {
323        usual
324        ignore -highlightthickness
325    }
326    pack $itk_component(zoomout) -side top -padx 2 -pady 2
327    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
328
329    itk_component add volume {
330        Rappture::PushButton $f.volume \
331            -onimage [Rappture::icon volume-on] \
332            -offimage [Rappture::icon volume-off] \
333            -variable [itcl::scope _settings(volumeVisible)] \
334            -command [itcl::code $this AdjustSetting volumeVisible]
335    }
336    $itk_component(volume) select
337    Rappture::Tooltip::for $itk_component(volume) \
338        "Don't display the volume"
339    pack $itk_component(volume) -padx 2 -pady 2
340
341    itk_component add streamlines {
342        Rappture::PushButton $f.streamlines \
343            -onimage [Rappture::icon streamlines-on] \
344            -offimage [Rappture::icon streamlines-off] \
345            -variable [itcl::scope _settings(streamlinesVisible)] \
346            -command [itcl::code $this AdjustSetting streamlinesVisible] \
347    }
348    $itk_component(streamlines) select
349    Rappture::Tooltip::for $itk_component(streamlines) \
350        "Toggle the streamlines on/off"
351    pack $itk_component(streamlines) -padx 2 -pady 2
352
353    itk_component add cutplane {
354        Rappture::PushButton $f.cutplane \
355            -onimage [Rappture::icon cutbutton] \
356            -offimage [Rappture::icon cutbutton] \
357            -variable [itcl::scope _settings(cutplaneVisible)] \
358            -command [itcl::code $this AdjustSetting cutplaneVisible]
359    }
360    Rappture::Tooltip::for $itk_component(cutplane) \
361        "Show/Hide cutplanes"
362    pack $itk_component(cutplane) -padx 2 -pady 2
363
364
365    if { [catch {
366        BuildVolumeTab
367        BuildStreamsTab
368        BuildCutplaneTab
369        BuildAxisTab
370        BuildCameraTab
371    } errs] != 0 } {
372        puts stderr errs=$errs
373    }
374    # Legend
375
376    set _image(legend) [image create photo]
377    itk_component add legend {
378        canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
379    } {
380        usual
381        ignore -highlightthickness
382        rename -background -plotbackground plotBackground Background
383    }
384
385    # Hack around the Tk panewindow.  The problem is that the requested
386    # size of the 3d view isn't set until an image is retrieved from
387    # the server.  So the panewindow uses the tiny size.
388    set w 10000
389    pack forget $itk_component(view)
390    blt::table $itk_component(plotarea) \
391        0,0 $itk_component(view) -fill both -reqwidth $w
392    blt::table configure $itk_component(plotarea) c1 -resize none
393
394    # Bindings for rotation via mouse
395    bind $itk_component(view) <ButtonPress-1> \
396        [itcl::code $this Rotate click %x %y]
397    bind $itk_component(view) <B1-Motion> \
398        [itcl::code $this Rotate drag %x %y]
399    bind $itk_component(view) <ButtonRelease-1> \
400        [itcl::code $this Rotate release %x %y]
401    bind $itk_component(view) <Configure> \
402        [itcl::code $this EventuallyResize %w %h]
403
404    if 0 {
405    bind $itk_component(view) <Configure> \
406        [itcl::code $this EventuallyResize %w %h]
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    update
456}
457
458# ----------------------------------------------------------------------
459# DESTRUCTOR
460# ----------------------------------------------------------------------
461itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
462    Disconnect
463    image delete $_image(plot)
464    image delete $_image(download)
465    catch { blt::arcball destroy $_arcball }
466}
467
468itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
469    if { $_width < 2 } {
470        set _width 500
471    }
472    if { $_height < 2 } {
473        set _height 500
474    }
475    set _start [clock clicks -milliseconds]
476    SendCmd "screen size $_width $_height"
477
478    set _legendPending 1
479    set _resizePending 0
480}
481
482itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
483    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
484    SendCmd "camera orient $q"
485    set _rotatePending 0
486}
487
488itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
489    foreach dataset [CurrentDatasets -visible] {
490        foreach {dataobj comp} [split $dataset -] break
491        # This command works for either random or fmesh seeds
492        SendCmd "streamlines seed numpts $_numSeeds $dataset"
493    }
494    set _reseedPending 0
495}
496
497itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
498    set _width $w
499    set _height $h
500    $_arcball resize $w $h
501    if { !$_resizePending } {
502        set _resizePending 1
503        $_dispatcher event -after 400 !resize
504    }
505}
506
507itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
508    set _numSeeds $numPoints
509    if { !$_reseedPending } {
510        set _reseedPending 1
511        $_dispatcher event -after 600 !reseed
512    }
513}
514
515set rotate_delay 100
516
517itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
518    foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
519    if { !$_rotatePending } {
520        set _rotatePending 1
521        global rotate_delay
522        $_dispatcher event -after $rotate_delay !rotate
523    }
524}
525
526itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
527    if { !$_cutplanePending } {
528        set _cutplanePending 1
529        $_dispatcher event -after 100 !${axis}cutplane
530    }
531}
532
533# ----------------------------------------------------------------------
534# USAGE: add <dataobj> ?<settings>?
535#
536# Clients use this to add a data object to the plot.  The optional
537# <settings> are used to configure the plot.  Allowed settings are
538# -color, -brightness, -width, -linestyle, and -raise.
539# ----------------------------------------------------------------------
540itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
541    array set params {
542        -color auto
543        -width 1
544        -linestyle solid
545        -brightness 0
546        -raise 0
547        -description ""
548        -param ""
549        -type ""
550    }
551    array set params $settings
552    set params(-description) ""
553    set params(-param) ""
554    array set params $settings
555
556    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
557        # can't handle -autocolors yet
558        set params(-color) black
559    }
560    set pos [lsearch -exact $_dlist $dataobj]
561    if {$pos < 0} {
562        lappend _dlist $dataobj
563    }
564    set _obj2ovride($dataobj-color) $params(-color)
565    set _obj2ovride($dataobj-width) $params(-width)
566    set _obj2ovride($dataobj-raise) $params(-raise)
567    $_dispatcher event -idle !rebuild
568}
569
570
571# ----------------------------------------------------------------------
572# USAGE: delete ?<dataobj1> <dataobj2> ...?
573#
574#       Clients use this to delete a dataobj from the plot.  If no dataobjs
575#       are specified, then all dataobjs are deleted.  No data objects are
576#       deleted.  They are only removed from the display list.
577#
578# ----------------------------------------------------------------------
579itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
580    if { [llength $args] == 0} {
581        set args $_dlist
582    }
583    # Delete all specified dataobjs
584    set changed 0
585    foreach dataobj $args {
586        set pos [lsearch -exact $_dlist $dataobj]
587        if { $pos < 0 } {
588            continue;                   # Don't know anything about it.
589        }
590        # Remove it from the dataobj list.
591        set _dlist [lreplace $_dlist $pos $pos]
592        array unset _obj2ovride $dataobj-*
593        array unset _settings $dataobj-*
594        set changed 1
595    }
596    # If anything changed, then rebuild the plot
597    if { $changed } {
598        $_dispatcher event -idle !rebuild
599    }
600}
601
602# ----------------------------------------------------------------------
603# USAGE: get ?-objects?
604# USAGE: get ?-visible?
605# USAGE: get ?-image view?
606#
607# Clients use this to query the list of objects being plotted, in
608# order from bottom to top of this result.  The optional "-image"
609# flag can also request the internal images being shown.
610# ----------------------------------------------------------------------
611itcl::body Rappture::VtkStreamlinesViewer::get {args} {
612    if {[llength $args] == 0} {
613        set args "-objects"
614    }
615
616    set op [lindex $args 0]
617    switch -- $op {
618        "-objects" {
619            # put the dataobj list in order according to -raise options
620            set dlist {}
621            foreach dataobj $_dlist {
622                if { ![IsValidObject $dataobj] } {
623                    continue
624                }
625                if {[info exists _obj2ovride($dataobj-raise)] &&
626                    $_obj2ovride($dataobj-raise)} {
627                    set dlist [linsert $dlist 0 $dataobj]
628                } else {
629                    lappend dlist $dataobj
630                }
631            }
632            return $dlist
633        }
634        "-visible" {
635            set dlist {}
636            foreach dataobj $_dlist {
637                if { ![IsValidObject $dataobj] } {
638                    continue
639                }
640                if { ![info exists _obj2ovride($dataobj-raise)] } {
641                    # No setting indicates that the object isn't visible.
642                    continue
643                }
644                # Otherwise use the -raise parameter to put the object to
645                # the front of the list.
646                if { $_obj2ovride($dataobj-raise) } {
647                    set dlist [linsert $dlist 0 $dataobj]
648                } else {
649                    lappend dlist $dataobj
650                }
651            }
652            return $dlist
653        }           
654        -image {
655            if {[llength $args] != 2} {
656                error "wrong # args: should be \"get -image view\""
657            }
658            switch -- [lindex $args end] {
659                view {
660                    return $_image(plot)
661                }
662                default {
663                    error "bad image name \"[lindex $args end]\": should be view"
664                }
665            }
666        }
667        default {
668            error "bad option \"$op\": should be -objects or -image"
669        }
670    }
671}
672
673# ----------------------------------------------------------------------
674# USAGE: scale ?<data1> <data2> ...?
675#
676# Sets the default limits for the overall plot according to the
677# limits of the data for all of the given <data> objects.  This
678# accounts for all objects--even those not showing on the screen.
679# Because of this, the limits are appropriate for all objects as
680# the user scans through data in the ResultSet viewer.
681# ----------------------------------------------------------------------
682itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
683    foreach dataobj $args {
684        foreach axis { x y z } {
685            set lim [$dataobj limits $axis]
686            if { ![info exists _limits($axis)] } {
687                set _limits($axis) $lim
688                continue
689            }
690            foreach {min max} $lim break
691            foreach {amin amax} $_limits($axis) break
692            if { $amin > $min } {
693                set amin $min
694            }
695            if { $amax < $max } {
696                set amax $max
697            }
698            set _limits($axis) [list $amin $amax]
699        }
700        foreach { fname lim } [$dataobj fieldlimits] {
701            if { ![info exists _limits($fname)] } {
702                set _limits($fname) $lim
703                continue
704            }
705            foreach {min max} $lim break
706            foreach {fmin fmax} $_limits($fname) break
707            if { $fmin > $min } {
708                set fmin $min
709            }
710            if { $fmax < $max } {
711                set fmax $max
712            }
713            set _limits($fname) [list $fmin $fmax]
714        }
715    }
716}
717
718# ----------------------------------------------------------------------
719# USAGE: download coming
720# USAGE: download controls <downloadCommand>
721# USAGE: download now
722#
723# Clients use this method to create a downloadable representation
724# of the plot.  Returns a list of the form {ext string}, where
725# "ext" is the file extension (indicating the type of data) and
726# "string" is the data itself.
727# ----------------------------------------------------------------------
728itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
729    switch $option {
730        coming {
731            if {[catch {
732                blt::winop snap $itk_component(plotarea) $_image(download)
733            }]} {
734                $_image(download) configure -width 1 -height 1
735                $_image(download) put #000000
736            }
737        }
738        controls {
739            set popup .vtkviewerdownload
740            if { ![winfo exists .vtkviewerdownload] } {
741                set inner [BuildDownloadPopup $popup [lindex $args 0]]
742            } else {
743                set inner [$popup component inner]
744            }
745            set _downloadPopup(image_controls) $inner.image_frame
746            set num [llength [get]]
747            set num [expr {($num == 1) ? "1 result" : "$num results"}]
748            set word [Rappture::filexfer::label downloadWord]
749            $inner.summary configure -text "$word $num in the following format:"
750            update idletasks            ;# Fix initial sizes
751            return $popup
752        }
753        now {
754            set popup .vtkviewerdownload
755            if {[winfo exists .vtkviewerdownload]} {
756                $popup deactivate
757            }
758            switch -- $_downloadPopup(format) {
759                "image" {
760                    return [$this GetImage [lindex $args 0]]
761                }
762                "vtk" {
763                    return [$this GetVtkData [lindex $args 0]]
764                }
765            }
766            return ""
767        }
768        default {
769            error "bad option \"$option\": should be coming, controls, now"
770        }
771    }
772}
773
774# ----------------------------------------------------------------------
775# USAGE: Connect ?<host:port>,<host:port>...?
776#
777# Clients use this method to establish a connection to a new
778# server, or to reestablish a connection to the previous server.
779# Any existing connection is automatically closed.
780# ----------------------------------------------------------------------
781itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
782    set _hosts [GetServerList "vtkvis"]
783    if { "" == $_hosts } {
784        return 0
785    }
786    set result [VisViewer::Connect $_hosts]
787    if { $result } {
788        if { $_reportClientInfo }  {
789            # Tell the server the viewer, hub, user and session.
790            # Do this immediately on connect before buffing any commands
791            global env
792
793            set info {}
794            set user "???"
795            if { [info exists env(USER)] } {
796                set user $env(USER)
797            }
798            set session "???"
799            if { [info exists env(SESSION)] } {
800                set session $env(SESSION)
801            }
802            lappend info "hub" [exec hostname]
803            lappend info "client" "vtkstreamlinesviewer"
804            lappend info "user" $user
805            lappend info "session" $session
806            SendCmd "clientinfo [list $info]"
807        }
808
809        set w [winfo width $itk_component(view)]
810        set h [winfo height $itk_component(view)]
811        EventuallyResize $w $h
812    }
813    return $result
814}
815
816#
817# isconnected --
818#
819#       Indicates if we are currently connected to the visualization server.
820#
821itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
822    return [VisViewer::IsConnected]
823}
824
825#
826# disconnect --
827#
828itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
829    Disconnect
830    set _reset 1
831}
832
833#
834# Disconnect --
835#
836#       Clients use this method to disconnect from the current rendering
837#       server.
838#
839itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
840    VisViewer::Disconnect
841
842    $_dispatcher cancel !rebuild
843    $_dispatcher cancel !resize
844    $_dispatcher cancel !reseed
845    $_dispatcher cancel !rotate
846    $_dispatcher cancel !xcutplane
847    $_dispatcher cancel !ycutplane
848    $_dispatcher cancel !zcutplane
849    $_dispatcher cancel !legend
850    # disconnected -- no more data sitting on server
851    array unset _datasets
852    array unset _data
853    array unset _colormaps
854    array unset _seeds
855    array unset _dataset2style
856    array unset _obj2datasets
857}
858
859# ----------------------------------------------------------------------
860# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
861#
862# Invoked automatically whenever the "image" command comes in from
863# the rendering server.  Indicates that binary image data with the
864# specified <size> will follow.
865# ----------------------------------------------------------------------
866itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
867    array set info {
868        -token "???"
869        -bytes 0
870        -type image
871    }
872    array set info $args
873    set bytes [ReceiveBytes $info(-bytes)]
874    if { $info(-type) == "image" } {
875        if 0 {
876            set f [open "last.ppm" "w"]
877            puts $f $bytes
878            close $f
879        }
880        $_image(plot) configure -data $bytes
881        set time [clock seconds]
882        set date [clock format $time]
883        #puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"       
884        if { $_start > 0 } {
885            set finish [clock clicks -milliseconds]
886            #puts stderr "round trip time [expr $finish -$_start] milliseconds"
887            set _start 0
888        }
889    } elseif { $info(type) == "print" } {
890        set tag $this-print-$info(-token)
891        set _hardcopy($tag) $bytes
892    }
893    if { $_legendPending } {
894        RequestLegend
895    }
896}
897
898#
899# ReceiveDataset --
900#
901itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
902    if { ![isconnected] } {
903        return
904    }
905    set option [lindex $args 0]
906    switch -- $option {
907        "scalar" {
908            set option [lindex $args 1]
909            switch -- $option {
910                "world" {
911                    foreach { x y z value tag } [lrange $args 2 end] break
912                }
913                "pixel" {
914                    foreach { x y value tag } [lrange $args 2 end] break
915                }
916            }
917        }
918        "vector" {
919            set option [lindex $args 1]
920            switch -- $option {
921                "world" {
922                    foreach { x y z vx vy vz tag } [lrange $args 2 end] break
923                }
924                "pixel" {
925                    foreach { x y vx vy vz tag } [lrange $args 2 end] break
926                }
927            }
928        }
929        "names" {
930            foreach { name } [lindex $args 1] {
931                #puts stderr "Dataset: $name"
932            }
933        }
934        default {
935            error "unknown dataset option \"$option\" from server"
936        }
937    }
938}
939
940# ----------------------------------------------------------------------
941# USAGE: Rebuild
942#
943# Called automatically whenever something changes that affects the
944# data in the widget.  Clears any existing data and rebuilds the
945# widget to display new data.
946# ----------------------------------------------------------------------
947itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
948    update
949    set w [winfo width $itk_component(view)]
950    set h [winfo height $itk_component(view)]
951    if { $w < 2 || $h < 2 } {
952        $_dispatcher event -idle !rebuild
953        return
954    }
955
956    # Turn on buffering of commands to the server.  We don't want to
957    # be preempted by a server disconnect/reconnect (which automatically
958    # generates a new call to Rebuild).
959    StartBufferingCommands
960    set _legendPending 1
961
962    set _first ""
963    if { $_reset } {
964        set _width $w
965        set _height $h
966        $_arcball resize $w $h
967        DoResize
968        InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
969            axesVisible axisLabelsVisible
970        # This "imgflush" is to force an image returned before vtkvis starts
971        # reading a (big) dataset.  This will display an empty plot with axes
972        # at the correct image size.
973        SendCmd "imgflush"
974    }
975
976    set _first ""
977    SendCmd "dataset visible 0"
978    foreach dataobj [get -objects] {
979        if { [info exists _obj2ovride($dataobj-raise)] &&  $_first == "" } {
980            set _first $dataobj
981        }
982        set _obj2datasets($dataobj) ""
983        foreach comp [$dataobj components] {
984            set tag $dataobj-$comp
985            if { ![info exists _datasets($tag)] } {
986                set bytes [$dataobj vtkdata $comp]
987                set length [string length $bytes]
988                if 0 {
989                    set f [open /tmp/vtkstreamlines.vtk "w"]
990                    fconfigure $f -translation binary -encoding binary
991                    puts $f $bytes
992                    close $f
993                }
994                if { $_reportClientInfo }  {
995                    set info {}
996                    lappend info "tool_id"       [$dataobj hints toolId]
997                    lappend info "tool_name"     [$dataobj hints toolName]
998                    lappend info "tool_version"  [$dataobj hints toolRevision]
999                    lappend info "tool_title"    [$dataobj hints toolTitle]
1000                    lappend info "dataset_label" [$dataobj hints label]
1001                    lappend info "dataset_size"  $length
1002                    lappend info "dataset_tag"   $tag
1003                    SendCmd "clientinfo [list $info]"
1004                }
1005                SendCmd "dataset add $tag data follows $length"
1006                append _outbuf $bytes
1007                set _datasets($tag) 1
1008                SetObjectStyle $dataobj $comp
1009            }
1010            lappend _obj2datasets($dataobj) $tag
1011            if { [info exists _obj2ovride($dataobj-raise)] } {
1012                SendCmd "dataset visible 1 $tag"
1013            }
1014        }
1015    }
1016    if {"" != $_first} {
1017        set location [$_first hints camera]
1018        if { $location != "" } {
1019            array set view $location
1020        }
1021        foreach axis { x y z } {
1022            set label [$_first hints ${axis}label]
1023            if { $label != "" } {
1024                SendCmd "axis name $axis $label"
1025            }
1026            set units [$_first hints ${axis}units]
1027            if { $units != "" } {
1028                SendCmd "axis units $axis $units"
1029            }
1030        }
1031        $itk_component(field) choices delete 0 end
1032        $itk_component(fieldmenu) delete 0 end
1033        array unset _fields
1034        set _curFldName ""
1035        foreach cname [$_first components] {
1036            foreach fname [$_first fieldnames $cname] {
1037                if { [info exists _fields($fname)] } {
1038                    continue
1039                }
1040                foreach { label units components } \
1041                    [$_first fieldinfo $fname] break
1042                $itk_component(field) choices insert end "$fname" "$label"
1043                $itk_component(fieldmenu) add radiobutton -label "$label" \
1044                    -value $label -variable [itcl::scope _curFldLabel] \
1045                    -selectcolor red \
1046                    -activebackground $itk_option(-plotbackground) \
1047                    -activeforeground $itk_option(-plotforeground) \
1048                    -font "Arial 8" \
1049                    -command [itcl::code $this Combo invoke]
1050                set _fields($fname) [list $label $units $components]
1051                if { $_curFldName == "" } {
1052                    set _curFldName $fname
1053                    set _curFldLabel $label
1054                }
1055            }
1056        }
1057        $itk_component(field) value $_curFldLabel
1058    }
1059
1060    if { $_reset } {
1061        InitSettings streamlinesSeedsVisible streamlinesOpacity \
1062            streamlinesVisible streamlinesColormap \
1063            streamlinesLighting \
1064            streamlinesColormap field \
1065            volumeVisible volumeEdges volumeLighting volumeOpacity \
1066            volumeWireframe \
1067            cutplaneVisible \
1068            cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1069            cutplaneXVisible cutplaneYVisible cutplaneZVisible
1070
1071        # Reset the camera and other view parameters
1072        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1073        $_arcball quaternion $q
1074        if {$_view(ortho)} {
1075            SendCmd "camera mode ortho"
1076        } else {
1077            SendCmd "camera mode persp"
1078        }
1079        DoRotate
1080        PanCamera
1081        Zoom reset
1082        SendCmd "camera reset"
1083        set _reset 0
1084    }
1085    # Actually write the commands to the server socket.  If it fails, we don't
1086    # care.  We're finished here.
1087    blt::busy hold $itk_component(hull)
1088    StopBufferingCommands
1089    blt::busy release $itk_component(hull)
1090}
1091
1092# ----------------------------------------------------------------------
1093# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1094#
1095# Returns a list of server IDs for the current datasets being displayed.  This
1096# is normally a single ID, but it might be a list of IDs if the current data
1097# object has multiple components.
1098# ----------------------------------------------------------------------
1099itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1100    set flag [lindex $args 0]
1101    switch -- $flag {
1102        "-all" {
1103            if { [llength $args] > 1 } {
1104                error "CurrentDatasets: can't specify dataobj after \"-all\""
1105            }
1106            set dlist [get -objects]
1107        }
1108        "-visible" {
1109            if { [llength $args] > 1 } {
1110                set dlist {}
1111                set args [lrange $args 1 end]
1112                foreach dataobj $args {
1113                    if { [info exists _obj2ovride($dataobj-raise)] } {
1114                        lappend dlist $dataobj
1115                    }
1116                }
1117            } else {
1118                set dlist [get -visible]
1119            }
1120        }           
1121        default {
1122            set dlist $args
1123        }
1124    }
1125    set rlist ""
1126    foreach dataobj $dlist {
1127        foreach comp [$dataobj components] {
1128            set tag $dataobj-$comp
1129            if { [info exists _datasets($tag)] && $_datasets($tag) } {
1130                lappend rlist $tag
1131            }
1132        }
1133    }
1134    return $rlist
1135}
1136
1137# ----------------------------------------------------------------------
1138# USAGE: Zoom in
1139# USAGE: Zoom out
1140# USAGE: Zoom reset
1141#
1142# Called automatically when the user clicks on one of the zoom
1143# controls for this widget.  Changes the zoom for the current view.
1144# ----------------------------------------------------------------------
1145itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1146    switch -- $option {
1147        "in" {
1148            set _view(zoom) [expr {$_view(zoom)*1.25}]
1149            SendCmd "camera zoom $_view(zoom)"
1150        }
1151        "out" {
1152            set _view(zoom) [expr {$_view(zoom)*0.8}]
1153            SendCmd "camera zoom $_view(zoom)"
1154        }
1155        "reset" {
1156            array set _view {
1157                qw      0.853553
1158                qx      -0.353553
1159                qy      0.353553
1160                qz      0.146447
1161                zoom    1.0
1162                xpan    0
1163                ypan    0
1164            }
1165            if { $_first != "" } {
1166                set location [$_first hints camera]
1167                if { $location != "" } {
1168                    array set _view $location
1169                }
1170            }
1171            set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1172            $_arcball quaternion $q
1173            DoRotate
1174            SendCmd "camera reset"
1175        }
1176    }
1177}
1178
1179itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1180    set x $_view(xpan)
1181    set y $_view(ypan)
1182    SendCmd "camera pan $x $y"
1183}
1184
1185
1186# ----------------------------------------------------------------------
1187# USAGE: Rotate click <x> <y>
1188# USAGE: Rotate drag <x> <y>
1189# USAGE: Rotate release <x> <y>
1190#
1191# Called automatically when the user clicks/drags/releases in the
1192# plot area.  Moves the plot according to the user's actions.
1193# ----------------------------------------------------------------------
1194itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1195    switch -- $option {
1196        "click" {
1197            $itk_component(view) configure -cursor fleur
1198            set _click(x) $x
1199            set _click(y) $y
1200        }
1201        "drag" {
1202            if {[array size _click] == 0} {
1203                Rotate click $x $y
1204            } else {
1205                set w [winfo width $itk_component(view)]
1206                set h [winfo height $itk_component(view)]
1207                if {$w <= 0 || $h <= 0} {
1208                    return
1209                }
1210
1211                if {[catch {
1212                    # this fails sometimes for no apparent reason
1213                    set dx [expr {double($x-$_click(x))/$w}]
1214                    set dy [expr {double($y-$_click(y))/$h}]
1215                }]} {
1216                    return
1217                }
1218                if { $dx == 0 && $dy == 0 } {
1219                    return
1220                }
1221                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1222                EventuallyRotate $q
1223                set _click(x) $x
1224                set _click(y) $y
1225            }
1226        }
1227        "release" {
1228            Rotate drag $x $y
1229            $itk_component(view) configure -cursor ""
1230            catch {unset _click}
1231        }
1232        default {
1233            error "bad option \"$option\": should be click, drag, release"
1234        }
1235    }
1236}
1237
1238itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1239    foreach tag [CurrentDatasets -visible] {
1240        SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1241    }
1242}
1243
1244# ----------------------------------------------------------------------
1245# USAGE: $this Pan click x y
1246#        $this Pan drag x y
1247#        $this Pan release x y
1248#
1249# Called automatically when the user clicks on one of the zoom
1250# controls for this widget.  Changes the zoom for the current view.
1251# ----------------------------------------------------------------------
1252itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1253    switch -- $option {
1254        "set" {
1255            set w [winfo width $itk_component(view)]
1256            set h [winfo height $itk_component(view)]
1257            set x [expr $x / double($w)]
1258            set y [expr $y / double($h)]
1259            set _view(xpan) [expr $_view(xpan) + $x]
1260            set _view(ypan) [expr $_view(ypan) + $y]
1261            PanCamera
1262            return
1263        }
1264        "click" {
1265            set _click(x) $x
1266            set _click(y) $y
1267            $itk_component(view) configure -cursor hand1
1268        }
1269        "drag" {
1270            if { ![info exists _click(x)] } {
1271                set _click(x) $x
1272            }
1273            if { ![info exists _click(y)] } {
1274                set _click(y) $y
1275            }
1276            set w [winfo width $itk_component(view)]
1277            set h [winfo height $itk_component(view)]
1278            set dx [expr ($_click(x) - $x)/double($w)]
1279            set dy [expr ($_click(y) - $y)/double($h)]
1280            set _click(x) $x
1281            set _click(y) $y
1282            set _view(xpan) [expr $_view(xpan) - $dx]
1283            set _view(ypan) [expr $_view(ypan) - $dy]
1284            PanCamera
1285        }
1286        "release" {
1287            Pan drag $x $y
1288            $itk_component(view) configure -cursor ""
1289        }
1290        default {
1291            error "unknown option \"$option\": should set, click, drag, or release"
1292        }
1293    }
1294}
1295
1296# ----------------------------------------------------------------------
1297# USAGE: InitSettings <what> ?<value>?
1298#
1299# Used internally to update rendering settings whenever parameters
1300# change in the popup settings panel.  Sends the new settings off
1301# to the back end.
1302# ----------------------------------------------------------------------
1303itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1304    foreach spec $args {
1305        if { [info exists _settings($_first-$spec)] } {
1306            # Reset global setting with dataobj specific setting
1307            set _settings($spec) $_settings($_first-$spec)
1308        }
1309        AdjustSetting $spec
1310    }
1311}
1312
1313#
1314# AdjustSetting --
1315#
1316#       Changes/updates a specific setting in the widget.  There are
1317#       usually user-setable option.  Commands are sent to the render
1318#       server.
1319#
1320itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1321    if { ![isconnected] } {
1322        return
1323    }
1324    switch -- $what {
1325        "volumeOpacity" {
1326            set val $_settings(volumeOpacity)
1327            set sval [expr { 0.01 * double($val) }]
1328            SendCmd "polydata opacity $sval"
1329        }
1330        "volumeWireframe" {
1331            set bool $_settings(volumeWireframe)
1332            SendCmd "polydata wireframe $bool"
1333        }
1334        "volumeVisible" {
1335            set bool $_settings(volumeVisible)
1336            SendCmd "polydata visible $bool"
1337            if { $bool } {
1338                Rappture::Tooltip::for $itk_component(volume) \
1339                    "Hide the volume"
1340            } else {
1341                Rappture::Tooltip::for $itk_component(volume) \
1342                    "Show the volume"
1343            }
1344        }
1345        "volumeLighting" {
1346            set bool $_settings(volumeLighting)
1347            SendCmd "polydata lighting $bool"
1348        }
1349        "volumeEdges" {
1350            set bool $_settings(volumeEdges)
1351            SendCmd "polydata edges $bool"
1352        }
1353        "axesVisible" {
1354            set bool $_settings(axesVisible)
1355            SendCmd "axis visible all $bool"
1356        }
1357        "axisLabelsVisible" {
1358            set bool $_settings(axisLabelsVisible)
1359            SendCmd "axis labels all $bool"
1360        }
1361        "axisXGrid" - "axisYGrid" - "axisZGrid" {
1362            set axis [string tolower [string range $what 4 4]]
1363            set bool $_settings($what)
1364            SendCmd "axis grid $axis $bool"
1365        }
1366        "axis-mode" {
1367            set mode [$itk_component(axismode) value]
1368            set mode [$itk_component(axismode) translate $mode]
1369            set _settings($what) $mode
1370            SendCmd "axis flymode $mode"
1371        }
1372        "cutplaneEdges" {
1373            set bool $_settings($what)
1374            SendCmd "cutplane edges $bool"
1375        }
1376        "cutplaneVisible" {
1377            set bool $_settings($what)
1378            SendCmd "cutplane visible $bool"
1379        }
1380        "cutplaneWireframe" {
1381            set bool $_settings($what)
1382            SendCmd "cutplane wireframe $bool"
1383        }
1384        "cutplaneLighting" {
1385            set bool $_settings($what)
1386            SendCmd "cutplane lighting $bool"
1387        }
1388        "cutplaneOpacity" {
1389            set val $_settings($what)
1390            set sval [expr { 0.01 * double($val) }]
1391            SendCmd "cutplane opacity $sval"
1392        }
1393        "cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1394            set axis [string tolower [string range $what 8 8]]
1395            set bool $_settings($what)
1396            if { $bool } {
1397                $itk_component(${axis}CutScale) configure -state normal \
1398                    -troughcolor white
1399            } else {
1400                $itk_component(${axis}CutScale) configure -state disabled \
1401                    -troughcolor grey82
1402            }
1403            SendCmd "cutplane axis $axis $bool"
1404        }
1405        "cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1406            set axis [string tolower [string range $what 8 8]]
1407            set pos [expr $_settings($what) * 0.01]
1408            SendCmd "cutplane slice ${axis} ${pos}"
1409            set _cutplanePending 0
1410        }
1411        "streamlinesSeedsVisible" {
1412            set bool $_settings($what)
1413            SendCmd "streamlines seed visible $bool"
1414        }
1415        "streamlinesNumSeeds" {
1416            set density $_settings($what)
1417            EventuallyReseed $density
1418        }
1419        "streamlinesVisible" {
1420            set bool $_settings($what)
1421            SendCmd "streamlines visible $bool"
1422            if { $bool } {
1423                Rappture::Tooltip::for $itk_component(streamlines) \
1424                    "Hide the streamlines"
1425            } else {
1426                Rappture::Tooltip::for $itk_component(streamlines) \
1427                    "Show the streamlines"
1428            }
1429        }
1430        "streamlinesMode" {
1431            set mode [$itk_component(streammode) value]
1432            set _settings(streamlinesMode) $mode
1433            switch -- $mode {
1434                "lines" {
1435                    SendCmd "streamlines lines"
1436                }
1437                "ribbons" {
1438                    SendCmd "streamlines ribbons 3 0"
1439                }
1440                "tubes" {
1441                    SendCmd "streamlines tubes 5 3"
1442                }
1443            }
1444        }
1445        "streamlinesColormap" {
1446            set colormap [$itk_component(colormap) value]
1447            set _settings(streamlinesColormap) $colormap
1448            foreach dataset [CurrentDatasets -visible $_first] {
1449                foreach {dataobj comp} [split $dataset -] break
1450                ChangeColormap $dataobj $comp $colormap
1451            }
1452            set _legendPending 1
1453        }
1454        "streamlinesOpacity" {
1455            set val $_settings(streamlinesOpacity)
1456            set sval [expr { 0.01 * double($val) }]
1457            SendCmd "streamlines opacity $sval"
1458        }
1459        "streamlinesScale" {
1460            set val $_settings(streamlinesScale)
1461            set sval [expr { 0.01 * double($val) }]
1462            SendCmd "streamlines scale $sval $sval $sval"
1463        }
1464        "streamlinesLighting" {
1465            set bool $_settings(streamlinesLighting)
1466            SendCmd "streamlines lighting $bool"
1467        }
1468        "field" {
1469            set label [$itk_component(field) value]
1470            set fname [$itk_component(field) translate $label]
1471            set _settings(field) $fname
1472            if { [info exists _fields($fname)] } {
1473                foreach { label units components } $_fields($fname) break
1474                if { $components > 1 } {
1475                    set _colorMode vmag
1476                } else {
1477                    set _colorMode scalar
1478                }
1479                set _curFldName $fname
1480                set _curFldLabel $label
1481            } else {
1482                puts stderr "unknown field \"$fname\""
1483                return
1484            }
1485            # Get the new limits because the field changed.
1486            SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1487            SendCmd "streamlines colormode $_colorMode $_curFldName"
1488            SendCmd "cutplane colormode $_colorMode $_curFldName"
1489            DrawLegend
1490        }
1491        default {
1492            error "don't know how to fix $what"
1493        }
1494    }
1495}
1496
1497#
1498# RequestLegend --
1499#
1500#       Request a new legend from the server.  The size of the legend
1501#       is determined from the height of the canvas.  It will be rotated
1502#       to be vertical when drawn.
1503#
1504itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1505    set font "Arial 8"
1506    set lineht [font metrics $font -linespace]
1507    set c $itk_component(legend)
1508    set w 12
1509    set h [expr {$_height - 3 * ($lineht + 2)}]
1510    if { $h < 1} {
1511        return
1512    }
1513    # Set the legend on the first streamlines dataset.
1514    foreach dataset [CurrentDatasets -visible $_first] {
1515        foreach {dataobj comp} [split $dataset -] break
1516        if { [info exists _dataset2style($dataset)] } {
1517            SendCmdNoWait \
1518                "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1519            break;
1520        }
1521    }
1522}
1523
1524#
1525# ChangeColormap --
1526#
1527itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1528    set tag $dataobj-$comp
1529    if { ![info exist _style($tag)] } {
1530        error "no initial colormap"
1531    }
1532    array set style $_style($tag)
1533    set style(-color) $color
1534    set _style($tag) [array get style]
1535    SetColormap $dataobj $comp
1536}
1537
1538#
1539# SetColormap --
1540#
1541itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1542    array set style {
1543        -color BCGYR
1544        -levels 6
1545        -opacity 1.0
1546    }
1547    set tag $dataobj-$comp
1548    if { ![info exists _initialStyle($tag)] } {
1549        # Save the initial component style.
1550        set _initialStyle($tag) [$dataobj style $comp]
1551    }
1552
1553    # Override defaults with initial style defined in xml.
1554    array set style $_initialStyle($tag)
1555
1556    if { ![info exists _style($tag)] } {
1557        set _style($tag) [array get style]
1558    }
1559    # Override initial style with current style.
1560    array set style $_style($tag)
1561
1562    set name "$style(-color):$style(-levels):$style(-opacity)"
1563    if { ![info exists _colormaps($name)] } {
1564        BuildColormap $name [array get style]
1565        set _colormaps($name) 1
1566    }
1567    if { ![info exists _dataset2style($tag)] ||
1568         $_dataset2style($tag) != $name } {
1569        SendCmd "streamlines colormap $name $tag"
1570        SendCmd "cutplane colormap $name $tag"
1571        set _dataset2style($tag) $name
1572    }
1573}
1574
1575
1576#
1577# BuildColormap --
1578#
1579itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1580    array set style $styles
1581    set cmap [ColorsToColormap $style(-color)]
1582    if { [llength $cmap] == 0 } {
1583        set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1584    }
1585    if { ![info exists _settings(volumeOpacity)] } {
1586        set _settings(volumeOpacity) $style(-opacity)
1587    }
1588    set max $_settings(volumeOpacity)
1589
1590    set wmap "0.0 1.0 1.0 1.0"
1591    SendCmd "colormap add $name { $cmap } { $wmap }"
1592}
1593
1594# ----------------------------------------------------------------------
1595# CONFIGURATION OPTION: -plotbackground
1596# ----------------------------------------------------------------------
1597itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1598    if { [isconnected] } {
1599        foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1600        SendCmd "screen bgcolor $r $g $b"
1601    }
1602}
1603
1604# ----------------------------------------------------------------------
1605# CONFIGURATION OPTION: -plotforeground
1606# ----------------------------------------------------------------------
1607itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1608    if { [isconnected] } {
1609        foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1610        #fix this!
1611        #SendCmd "color background $r $g $b"
1612    }
1613}
1614
1615itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1616
1617    set fg [option get $itk_component(hull) font Font]
1618    #set bfg [option get $itk_component(hull) boldFont Font]
1619
1620    set inner [$itk_component(main) insert end \
1621        -title "Volume Settings" \
1622        -icon [Rappture::icon volume-on]]
1623    $inner configure -borderwidth 4
1624
1625    checkbutton $inner.volume \
1626        -text "Show Volume" \
1627        -variable [itcl::scope _settings(volumeVisible)] \
1628        -command [itcl::code $this AdjustSetting volumeVisible] \
1629        -font "Arial 9"
1630
1631    checkbutton $inner.wireframe \
1632        -text "Show Wireframe" \
1633        -variable [itcl::scope _settings(volumeWireframe)] \
1634        -command [itcl::code $this AdjustSetting volumeWireframe] \
1635        -font "Arial 9"
1636
1637    checkbutton $inner.lighting \
1638        -text "Enable Lighting" \
1639        -variable [itcl::scope _settings(volumeLighting)] \
1640        -command [itcl::code $this AdjustSetting volumeLighting] \
1641        -font "Arial 9"
1642
1643    checkbutton $inner.edges \
1644        -text "Show Edges" \
1645        -variable [itcl::scope _settings(volumeEdges)] \
1646        -command [itcl::code $this AdjustSetting volumeEdges] \
1647        -font "Arial 9"
1648
1649    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1650    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1651        -variable [itcl::scope _settings(volumeOpacity)] \
1652        -width 10 \
1653        -showvalue off \
1654        -command [itcl::code $this AdjustSetting volumeOpacity]
1655
1656    blt::table $inner \
1657        0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1658        1,0 $inner.lighting  -anchor w -pady 2 -cspan 2 \
1659        2,0 $inner.edges     -anchor w -pady 2 -cspan 3 \
1660        3,0 $inner.opacity_l -anchor w -pady 2 \
1661        3,1 $inner.opacity   -fill x   -pady 2
1662
1663    blt::table configure $inner r* c* -resize none
1664    blt::table configure $inner r4 c1 -resize expand
1665}
1666
1667
1668itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1669
1670    set fg [option get $itk_component(hull) font Font]
1671    #set bfg [option get $itk_component(hull) boldFont Font]
1672
1673    set inner [$itk_component(main) insert end \
1674        -title "Streams Settings" \
1675        -icon [Rappture::icon streamlines-on]]
1676    $inner configure -borderwidth 4
1677
1678    checkbutton $inner.streamlines \
1679        -text "Show Streamlines" \
1680        -variable [itcl::scope _settings(streamlinesVisible)] \
1681        -command [itcl::code $this AdjustSetting streamlinesVisible] \
1682        -font "Arial 9"
1683   
1684    checkbutton $inner.lighting \
1685        -text "Enable Lighting" \
1686        -variable [itcl::scope _settings(streamlinesLighting)] \
1687        -command [itcl::code $this AdjustSetting streamlinesLighting] \
1688        -font "Arial 9"
1689
1690    checkbutton $inner.seeds \
1691        -text "Show Seeds" \
1692        -variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1693        -command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1694        -font "Arial 9"
1695
1696    label $inner.mode_l -text "Mode" -font "Arial 9"
1697    itk_component add streammode {
1698        Rappture::Combobox $inner.mode -width 10 -editable no
1699    }
1700    $inner.mode choices insert end \
1701        "lines"    "lines" \
1702        "ribbons"   "ribbons" \
1703        "tubes"     "tubes"
1704    $itk_component(streammode) value $_settings(streamlinesMode)
1705    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1706
1707    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1708    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1709        -variable [itcl::scope _settings(streamlinesOpacity)] \
1710        -width 10 \
1711        -showvalue off \
1712        -command [itcl::code $this AdjustSetting streamlinesOpacity]
1713
1714    label $inner.density_l -text "No. Seeds" -font "Arial 9"
1715    ::scale $inner.density -from 1 -to 1000 -orient horizontal \
1716        -variable [itcl::scope _settings(streamlinesNumSeeds)] \
1717        -width 10 \
1718        -showvalue on \
1719        -command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1720
1721    label $inner.scale_l -text "Scale" -font "Arial 9"
1722    ::scale $inner.scale -from 1 -to 100 -orient horizontal \
1723        -variable [itcl::scope _settings(streamlinesScale)] \
1724        -width 10 \
1725        -showvalue off \
1726        -command [itcl::code $this AdjustSetting streamlinesScale]
1727
1728    label $inner.field_l -text "Color by" -font "Arial 9"
1729    itk_component add field {
1730        Rappture::Combobox $inner.field -width 10 -editable no
1731    }
1732    bind $inner.field <<Value>> \
1733        [itcl::code $this AdjustSetting field]
1734
1735    label $inner.colormap_l -text "Colormap" -font "Arial 9"
1736    itk_component add colormap {
1737        Rappture::Combobox $inner.colormap -width 10 -editable no
1738    }
1739    $inner.colormap choices insert end \
1740        "BCGYR"              "BCGYR"            \
1741        "BGYOR"              "BGYOR"            \
1742        "blue"               "blue"             \
1743        "blue-to-brown"      "blue-to-brown"    \
1744        "blue-to-orange"     "blue-to-orange"   \
1745        "blue-to-grey"       "blue-to-grey"     \
1746        "green-to-magenta"   "green-to-magenta" \
1747        "greyscale"          "greyscale"        \
1748        "nanohub"            "nanohub"          \
1749        "rainbow"            "rainbow"          \
1750        "spectral"           "spectral"         \
1751        "ROYGB"              "ROYGB"            \
1752        "RYGCB"              "RYGCB"            \
1753        "brown-to-blue"      "brown-to-blue"    \
1754        "grey-to-blue"       "grey-to-blue"     \
1755        "orange-to-blue"     "orange-to-blue"   
1756
1757    $itk_component(colormap) value "BCGYR"
1758    bind $inner.colormap <<Value>> \
1759        [itcl::code $this AdjustSetting streamlinesColormap]
1760
1761    blt::table $inner \
1762        0,0 $inner.field_l     -anchor w -pady 2  \
1763        0,1 $inner.field       -fill x   -pady 2  \
1764        1,0 $inner.colormap_l  -anchor w -pady 2  \
1765        1,1 $inner.colormap    -fill x   -pady 2  \
1766        2,0 $inner.mode_l      -anchor w -pady 2  \
1767        2,1 $inner.mode        -fill x   -pady 2  \
1768        3,0 $inner.opacity_l   -anchor w -pady 2  \
1769        3,1 $inner.opacity     -fill x -pady 2 \
1770        5,0 $inner.lighting    -anchor w -pady 2 -cspan 2 \
1771        6,0 $inner.seeds       -anchor w -pady 2 -cspan 2 \
1772        7,0 $inner.density_l   -anchor w -pady 2  \
1773        7,1 $inner.density     -fill x   -pady 2  \
1774
1775    blt::table configure $inner r* c* -resize none
1776    blt::table configure $inner r10 c1 c2 -resize expand
1777}
1778
1779itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1780
1781    set fg [option get $itk_component(hull) font Font]
1782    #set bfg [option get $itk_component(hull) boldFont Font]
1783
1784    set inner [$itk_component(main) insert end \
1785        -title "Axis Settings" \
1786        -icon [Rappture::icon axis1]]
1787    $inner configure -borderwidth 4
1788
1789    checkbutton $inner.visible \
1790        -text "Show Axes" \
1791        -variable [itcl::scope _settings(axesVisible)] \
1792        -command [itcl::code $this AdjustSetting axesVisible] \
1793        -font "Arial 9"
1794
1795    checkbutton $inner.labels \
1796        -text "Show Axis Labels" \
1797        -variable [itcl::scope _settings(axisLabelsVisible)] \
1798        -command [itcl::code $this AdjustSetting axisLabelsVisible] \
1799        -font "Arial 9"
1800
1801    checkbutton $inner.xgrid \
1802        -text "Show X Grid" \
1803        -variable [itcl::scope _settings(axisXGrid)] \
1804        -command [itcl::code $this AdjustSetting axisXGrid] \
1805        -font "Arial 9"
1806    checkbutton $inner.ygrid \
1807        -text "Show Y Grid" \
1808        -variable [itcl::scope _settings(axisYGrid)] \
1809        -command [itcl::code $this AdjustSetting axisYGrid] \
1810        -font "Arial 9"
1811    checkbutton $inner.zgrid \
1812        -text "Show Z Grid" \
1813        -variable [itcl::scope _settings(axisZGrid)] \
1814        -command [itcl::code $this AdjustSetting axisZGrid] \
1815        -font "Arial 9"
1816
1817    label $inner.mode_l -text "Mode" -font "Arial 9"
1818
1819    itk_component add axismode {
1820        Rappture::Combobox $inner.mode -width 10 -editable no
1821    }
1822    $inner.mode choices insert end \
1823        "static_triad"    "static" \
1824        "closest_triad"   "closest" \
1825        "furthest_triad"  "furthest" \
1826        "outer_edges"     "outer"         
1827    $itk_component(axismode) value "static"
1828    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1829
1830    blt::table $inner \
1831        0,0 $inner.visible -anchor w -cspan 2 \
1832        1,0 $inner.labels  -anchor w -cspan 2 \
1833        2,0 $inner.xgrid   -anchor w -cspan 2 \
1834        3,0 $inner.ygrid   -anchor w -cspan 2 \
1835        4,0 $inner.zgrid   -anchor w -cspan 2 \
1836        5,0 $inner.mode_l  -anchor w -cspan 2 -padx { 2 0 } \
1837        6,0 $inner.mode    -fill x   -cspan 2
1838
1839    blt::table configure $inner r* c* -resize none
1840    blt::table configure $inner r7 c1 -resize expand
1841}
1842
1843
1844itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1845    set inner [$itk_component(main) insert end \
1846        -title "Camera Settings" \
1847        -icon [Rappture::icon camera]]
1848    $inner configure -borderwidth 4
1849
1850    label $inner.view_l -text "view" -font "Arial 9"
1851    set f [frame $inner.view]
1852    foreach side { front back left right top bottom } {
1853        button $f.$side  -image [Rappture::icon view$side] \
1854            -command [itcl::code $this SetOrientation $side]
1855        Rappture::Tooltip::for $f.$side "Change the view to $side"
1856        pack $f.$side -side left
1857    }
1858
1859    blt::table $inner \
1860        0,0 $inner.view_l -anchor e -pady 2 \
1861        0,1 $inner.view -anchor w -pady 2
1862
1863    set labels { qx qy qz qw xpan ypan zoom }
1864    set row 1
1865    foreach tag $labels {
1866        label $inner.${tag}label -text $tag -font "Arial 9"
1867        entry $inner.${tag} -font "Arial 9"  -bg white \
1868            -textvariable [itcl::scope _view($tag)]
1869        bind $inner.${tag} <KeyPress-Return> \
1870            [itcl::code $this camera set ${tag}]
1871        blt::table $inner \
1872            $row,0 $inner.${tag}label -anchor e -pady 2 \
1873            $row,1 $inner.${tag} -anchor w -pady 2
1874        blt::table configure $inner r$row -resize none
1875        incr row
1876    }
1877    checkbutton $inner.ortho \
1878        -text "Orthographic Projection" \
1879        -variable [itcl::scope _view(ortho)] \
1880        -command [itcl::code $this camera set ortho] \
1881        -font "Arial 9"
1882    blt::table $inner \
1883            $row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1884    blt::table configure $inner r$row -resize none
1885    incr row
1886
1887    blt::table configure $inner c* r* -resize none
1888    blt::table configure $inner c2 -resize expand
1889    blt::table configure $inner r$row -resize expand
1890}
1891
1892itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1893
1894    set fg [option get $itk_component(hull) font Font]
1895   
1896    set inner [$itk_component(main) insert end \
1897        -title "Cutplane Settings" \
1898        -icon [Rappture::icon cutbutton]]
1899
1900    $inner configure -borderwidth 4
1901
1902    checkbutton $inner.visible \
1903        -text "Show Cutplanes" \
1904        -variable [itcl::scope _settings(cutplaneVisible)] \
1905        -command [itcl::code $this AdjustSetting cutplaneVisible] \
1906        -font "Arial 9"
1907
1908    checkbutton $inner.wireframe \
1909        -text "Show Wireframe" \
1910        -variable [itcl::scope _settings(cutplaneWireframe)] \
1911        -command [itcl::code $this AdjustSetting cutplaneWireframe] \
1912        -font "Arial 9"
1913
1914    checkbutton $inner.lighting \
1915        -text "Enable Lighting" \
1916        -variable [itcl::scope _settings(cutplaneLighting)] \
1917        -command [itcl::code $this AdjustSetting cutplaneLighting] \
1918        -font "Arial 9"
1919
1920    checkbutton $inner.edges \
1921        -text "Show Edges" \
1922        -variable [itcl::scope _settings(cutplaneEdges)] \
1923        -command [itcl::code $this AdjustSetting cutplaneEdges] \
1924        -font "Arial 9"
1925
1926    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1927    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1928        -variable [itcl::scope _settings(cutplaneOpacity)] \
1929        -width 10 \
1930        -showvalue off \
1931        -command [itcl::code $this AdjustSetting cutplaneOpacity]
1932    $inner.opacity set $_settings(cutplaneOpacity)
1933
1934    # X-value slicer...
1935    itk_component add xCutButton {
1936        Rappture::PushButton $inner.xbutton \
1937            -onimage [Rappture::icon x-cutplane-red] \
1938            -offimage [Rappture::icon x-cutplane-red] \
1939            -command [itcl::code $this AdjustSetting cutplaneXVisible] \
1940            -variable [itcl::scope _settings(cutplaneXVisible)]
1941    }
1942    Rappture::Tooltip::for $itk_component(xCutButton) \
1943        "Toggle the X-axis cutplane on/off"
1944    $itk_component(xCutButton) select
1945
1946    itk_component add xCutScale {
1947        ::scale $inner.xval -from 100 -to 0 \
1948            -width 10 -orient vertical -showvalue yes \
1949            -borderwidth 1 -highlightthickness 0 \
1950            -command [itcl::code $this EventuallySetCutplane x] \
1951            -variable [itcl::scope _settings(cutplaneXPosition)] \
1952            -foreground red3 -font "Arial 9 bold"
1953    } {
1954        usual
1955        ignore -borderwidth -highlightthickness -foreground -font
1956    }
1957    # Set the default cutplane value before disabling the scale.
1958    $itk_component(xCutScale) set 50
1959    $itk_component(xCutScale) configure -state disabled
1960    Rappture::Tooltip::for $itk_component(xCutScale) \
1961        "@[itcl::code $this Slice tooltip x]"
1962
1963    # Y-value slicer...
1964    itk_component add yCutButton {
1965        Rappture::PushButton $inner.ybutton \
1966            -onimage [Rappture::icon y-cutplane-green] \
1967            -offimage [Rappture::icon y-cutplane-green] \
1968            -command [itcl::code $this AdjustSetting cutplaneYVisible] \
1969            -variable [itcl::scope _settings(cutplaneYVisible)]
1970    }
1971    Rappture::Tooltip::for $itk_component(yCutButton) \
1972        "Toggle the Y-axis cutplane on/off"
1973    $itk_component(yCutButton) select
1974
1975    itk_component add yCutScale {
1976        ::scale $inner.yval -from 100 -to 0 \
1977            -width 10 -orient vertical -showvalue yes \
1978            -borderwidth 1 -highlightthickness 0 \
1979            -command [itcl::code $this EventuallySetCutplane y] \
1980            -variable [itcl::scope _settings(cutplaneYPosition)] \
1981            -foreground green3 -font "Arial 9 bold"
1982    } {
1983        usual
1984        ignore -borderwidth -highlightthickness -foreground -font
1985    }
1986    Rappture::Tooltip::for $itk_component(yCutScale) \
1987        "@[itcl::code $this Slice tooltip y]"
1988    # Set the default cutplane value before disabling the scale.
1989    $itk_component(yCutScale) set 50
1990    $itk_component(yCutScale) configure -state disabled
1991
1992    # Z-value slicer...
1993    itk_component add zCutButton {
1994        Rappture::PushButton $inner.zbutton \
1995            -onimage [Rappture::icon z-cutplane-blue] \
1996            -offimage [Rappture::icon z-cutplane-blue] \
1997            -command [itcl::code $this AdjustSetting cutplaneZVisible] \
1998            -variable [itcl::scope _settings(cutplaneZVisible)]
1999    }
2000    Rappture::Tooltip::for $itk_component(zCutButton) \
2001        "Toggle the Z-axis cutplane on/off"
2002    $itk_component(zCutButton) select
2003
2004    itk_component add zCutScale {
2005        ::scale $inner.zval -from 100 -to 0 \
2006            -width 10 -orient vertical -showvalue yes \
2007            -borderwidth 1 -highlightthickness 0 \
2008            -command [itcl::code $this EventuallySetCutplane z] \
2009            -variable [itcl::scope _settings(cutplaneZPosition)] \
2010            -foreground blue3 -font "Arial 9 bold"
2011    } {
2012        usual
2013        ignore -borderwidth -highlightthickness -foreground -font
2014    }
2015    $itk_component(zCutScale) set 50
2016    $itk_component(zCutScale) configure -state disabled
2017    Rappture::Tooltip::for $itk_component(zCutScale) \
2018        "@[itcl::code $this Slice tooltip z]"
2019
2020    blt::table $inner \
2021        0,0 $inner.lighting             -anchor w -pady 2 -cspan 4 \
2022        1,0 $inner.wireframe            -anchor w -pady 2 -cspan 4 \
2023        2,0 $inner.edges                -anchor w -pady 2 -cspan 4 \
2024        3,0 $inner.opacity_l            -anchor w -pady 2 -cspan 1 \
2025        3,1 $inner.opacity              -fill x   -pady 2 -cspan 3 \
2026        4,0 $itk_component(xCutButton)  -anchor w -padx 2 -pady 2 \
2027        5,0 $itk_component(yCutButton)  -anchor w -padx 2 -pady 2 \
2028        6,0 $itk_component(zCutButton)  -anchor w -padx 2 -pady 2 \
2029        4,1 $itk_component(xCutScale)   -fill y -rspan 4 \
2030        4,2 $itk_component(yCutScale)   -fill y -rspan 4 \
2031        4,3 $itk_component(zCutScale)   -fill y -rspan 4 \
2032
2033    blt::table configure $inner r* c* -resize none
2034    blt::table configure $inner r7 c4 -resize expand
2035}
2036
2037#
2038#  camera --
2039#
2040itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2041    switch -- $option {
2042        "show" {
2043            puts [array get _view]
2044        }
2045        "set" {
2046            set who [lindex $args 0]
2047            set x $_view($who)
2048            set code [catch { string is double $x } result]
2049            if { $code != 0 || !$result } {
2050                return
2051            }
2052            switch -- $who {
2053                "ortho" {
2054                    if {$_view(ortho)} {
2055                        SendCmd "camera mode ortho"
2056                    } else {
2057                        SendCmd "camera mode persp"
2058                    }
2059                }
2060                "xpan" - "ypan" {
2061                    PanCamera
2062                }
2063                "qx" - "qy" - "qz" - "qw" {
2064                    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2065                    $_arcball quaternion $q
2066                    EventuallyRotate $q
2067                }
2068                "zoom" {
2069                    SendCmd "camera zoom $_view(zoom)"
2070                }
2071            }
2072        }
2073    }
2074}
2075
2076itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2077    set bytes ""
2078    foreach dataobj [get] {
2079        foreach comp [$dataobj components] {
2080            set tag $dataobj-$comp
2081            set contents [$dataobj vtkdata $comp]
2082            append bytes "$contents\n"
2083        }
2084    }
2085    return [list .vtk $bytes]
2086}
2087
2088itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2089    if { [image width $_image(download)] > 0 &&
2090         [image height $_image(download)] > 0 } {
2091        set bytes [$_image(download) data -format "jpeg -quality 100"]
2092        set bytes [Rappture::encoding::decode -as b64 $bytes]
2093        return [list .jpg $bytes]
2094    }
2095    return ""
2096}
2097
2098itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2099    Rappture::Balloon $popup \
2100        -title "[Rappture::filexfer::label downloadWord] as..."
2101    set inner [$popup component inner]
2102    label $inner.summary -text "" -anchor w
2103    radiobutton $inner.vtk_button -text "VTK data file" \
2104        -variable [itcl::scope _downloadPopup(format)] \
2105        -font "Helvetica 9 " \
2106        -value vtk 
2107    Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2108    radiobutton $inner.image_button -text "Image File" \
2109        -variable [itcl::scope _downloadPopup(format)] \
2110        -value image
2111    Rappture::Tooltip::for $inner.image_button \
2112        "Save as digital image."
2113
2114    button $inner.ok -text "Save" \
2115        -highlightthickness 0 -pady 2 -padx 3 \
2116        -command $command \
2117        -compound left \
2118        -image [Rappture::icon download]
2119
2120    button $inner.cancel -text "Cancel" \
2121        -highlightthickness 0 -pady 2 -padx 3 \
2122        -command [list $popup deactivate] \
2123        -compound left \
2124        -image [Rappture::icon cancel]
2125
2126    blt::table $inner \
2127        0,0 $inner.summary -cspan 2  \
2128        1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2129        2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2130        4,1 $inner.cancel -width .9i -fill y \
2131        4,0 $inner.ok -padx 2 -width .9i -fill y
2132    blt::table configure $inner r3 -height 4
2133    blt::table configure $inner r4 -pady 4
2134    raise $inner.image_button
2135    $inner.vtk_button invoke
2136    return $inner
2137}
2138
2139itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2140    # Parse style string.
2141    set tag $dataobj-$comp
2142    set style [$dataobj style $comp]
2143    array set settings {
2144        -color \#808080
2145        -edges 0
2146        -edgecolor black
2147        -linewidth 1.0
2148        -opacity 0.4
2149        -wireframe 0
2150        -lighting 1
2151        -seeds 1
2152        -seedcolor white
2153        -visible 1
2154    }
2155    if { $dataobj != $_first } {
2156        set settings(-opacity) 1
2157    }
2158    array set settings $style
2159    SendCmd "streamlines add $tag"
2160    SendCmd "streamlines seed visible off $tag"
2161    set seeds [$dataobj hints seeds]
2162    if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2163        set length [string length $seeds]
2164        SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2165        SendCmd "$seeds"
2166        set _seeds($dataobj) 1
2167    }
2168    SendCmd "cutplane add $tag"
2169    SendCmd "polydata add $tag"
2170    SendCmd "polydata colormode constant {} $tag"
2171    set _settings(volumeEdges) $settings(-edges)
2172    set _settings(volumeLighting) $settings(-lighting)
2173    set _settings(volumeOpacity) $settings(-opacity)
2174    set _settings(volumeWireframe) $settings(-wireframe)
2175    set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2176    SetColormap $dataobj $comp
2177}
2178
2179itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2180    if {[catch {$dataobj isa Rappture::Field} valid] != 0 || !$valid} {
2181        return 0
2182    }
2183    return 1
2184}
2185
2186# ----------------------------------------------------------------------
2187# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2188#
2189# Invoked automatically whenever the "legend" command comes in from
2190# the rendering server.  Indicates that binary image data with the
2191# specified <size> will follow.
2192# ----------------------------------------------------------------------
2193itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2194    set _legendPending 0
2195    set _title $title
2196    regsub {\(mag\)} $title "" _title
2197    if { [IsConnected] } {
2198        set bytes [ReceiveBytes $size]
2199        if { ![info exists _image(legend)] } {
2200            set _image(legend) [image create photo]
2201        }
2202        $_image(legend) configure -data $bytes
2203        #puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2204        if { [catch {DrawLegend} errs] != 0 } {
2205            puts stderr errs=$errs
2206        }
2207    }
2208}
2209
2210#
2211# DrawLegend --
2212#
2213#       Draws the legend in it's own canvas which resides to the right
2214#       of the contour plot area.
2215#
2216itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2217    set fname $_curFldName
2218    set c $itk_component(view)
2219    set w [winfo width $c]
2220    set h [winfo height $c]
2221    set font "Arial 8"
2222    set lineht [font metrics $font -linespace]
2223   
2224    if { [info exists _fields($fname)] } {
2225        foreach { title units } $_fields($fname) break
2226        if { $units != "" } {
2227            set title [format "%s (%s)" $title $units]
2228        }
2229    } else {
2230        set title $fname
2231    }
2232    if { $_settings(legendVisible) } {
2233        set x [expr $w - 2]
2234        if { [$c find withtag "legend"] == "" } {
2235            set y 2
2236            $c create text $x $y \
2237                -anchor ne \
2238                -fill $itk_option(-plotforeground) -tags "title legend" \
2239                -font $font
2240            incr y $lineht
2241            $c create text $x $y \
2242                -anchor ne \
2243                -fill $itk_option(-plotforeground) -tags "vmax legend" \
2244                -font $font
2245            incr y $lineht
2246            $c create image $x $y \
2247                -anchor ne \
2248                -image $_image(legend) -tags "colormap legend"
2249            $c create text $x [expr {$h-2}] \
2250                -anchor se \
2251                -fill $itk_option(-plotforeground) -tags "vmin legend" \
2252                -font $font
2253            #$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2254            $c bind colormap <Leave> [itcl::code $this LeaveLegend]
2255            $c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2256        }
2257        $c bind title <ButtonPress> [itcl::code $this Combo post]
2258        $c bind title <Enter> [itcl::code $this Combo activate]
2259        $c bind title <Leave> [itcl::code $this Combo deactivate]
2260        # Reset the item coordinates according the current size of the plot.
2261        $c itemconfigure title -text $title
2262        if { [info exists _limits($_curFldName)] } {
2263            foreach {vmin vmax} $_limits($_curFldName) break
2264            $c itemconfigure vmin -text [format %g $vmin]
2265            $c itemconfigure vmax -text [format %g $vmax]
2266        }
2267        set y 2
2268        $c coords title $x $y
2269        incr y $lineht
2270        $c coords vmax $x $y
2271        incr y $lineht
2272        $c coords colormap $x $y
2273        $c coords vmin $x [expr {$h - 2}]
2274    }
2275}
2276
2277#
2278# EnterLegend --
2279#
2280itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2281    SetLegendTip $x $y
2282}
2283
2284#
2285# MotionLegend --
2286#
2287itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2288    Rappture::Tooltip::tooltip cancel
2289    set c $itk_component(view)
2290    SetLegendTip $x $y
2291}
2292
2293#
2294# LeaveLegend --
2295#
2296itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2297    Rappture::Tooltip::tooltip cancel
2298    .rappturetooltip configure -icon ""
2299}
2300
2301#
2302# SetLegendTip --
2303#
2304itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2305    set c $itk_component(view)
2306    set w [winfo width $c]
2307    set h [winfo height $c]
2308    set font "Arial 8"
2309    set lineht [font metrics $font -linespace]
2310   
2311    set imgHeight [image height $_image(legend)]
2312    set coords [$c coords colormap]
2313    set imgX [expr $w - [image width $_image(legend)] - 2]
2314    set imgY [expr $y - 2 * ($lineht + 2)]
2315
2316    if { [info exists _fields($_title)] } {
2317        foreach { title units } $_fields($_title) break
2318        if { $units != "" } {
2319            set title [format "%s (%s)" $title $units]
2320        }
2321    } else {
2322        set title $_title
2323    }
2324    # Make a swatch of the selected color
2325    if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2326        #puts stderr "out of range: $imgY"
2327        return
2328    }
2329    if { ![info exists _image(swatch)] } {
2330        set _image(swatch) [image create photo -width 24 -height 24]
2331    }
2332    set color [eval format "\#%02x%02x%02x" $pixel]
2333    $_image(swatch) put black  -to 0 0 23 23
2334    $_image(swatch) put $color -to 1 1 22 22
2335    .rappturetooltip configure -icon $_image(swatch)
2336
2337    # Compute the value of the point
2338    if { [info exists _limits($_curFldName)] } {
2339        foreach {vmin vmax} $_limits($_curFldName) break
2340        set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2341        set value [expr $t * ($vmax - $vmin) + $vmin]
2342    } else {
2343        set value 0.0
2344    }
2345    set tipx [expr $x + 15]
2346    set tipy [expr $y - 5]
2347    Rappture::Tooltip::text $c "$title $value"
2348    Rappture::Tooltip::tooltip show $c +$tipx,+$tipy   
2349}
2350
2351# ----------------------------------------------------------------------
2352# USAGE: Slice move x|y|z <newval>
2353#
2354# Called automatically when the user drags the slider to move the
2355# cut plane that slices 3D data.  Gets the current value from the
2356# slider and moves the cut plane to the appropriate point in the
2357# data set.
2358# ----------------------------------------------------------------------
2359itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2360    switch -- $option {
2361        "move" {
2362            set axis [lindex $args 0]
2363            set oldval $_settings(axis-${axis}position)
2364            set newval [lindex $args 1]
2365            if {[llength $args] != 2} {
2366                error "wrong # args: should be \"Slice move x|y|z newval\""
2367            }
2368            set newpos [expr {0.01*$newval}]
2369            SendCmd "cutplane slice $axis $newpos"
2370        }
2371        "tooltip" {
2372            set axis [lindex $args 0]
2373            set val [$itk_component(${axis}CutScale) get]
2374            return "Move the [string toupper $axis] cut plane.\nCurrently:  $axis = $val%"
2375        }
2376        default {
2377            error "bad option \"$option\": should be axis, move, or tooltip"
2378        }
2379    }
2380}
2381
2382# ----------------------------------------------------------------------
2383# USAGE: _dropdown post
2384# USAGE: _dropdown unpost
2385# USAGE: _dropdown select
2386#
2387# Used internally to handle the dropdown list for this combobox.  The
2388# post/unpost options are invoked when the list is posted or unposted
2389# to manage the relief of the controlling button.  The select option
2390# is invoked whenever there is a selection from the list, to assign
2391# the value back to the gauge.
2392# ----------------------------------------------------------------------
2393itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2394    set c $itk_component(view)
2395    switch -- $option {
2396        post {
2397            foreach { x1 y1 x2 y2 } [$c bbox title] break
2398            set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2399            set x [expr $x1 + [winfo rootx $itk_component(view)]]
2400            set y [expr $y2 + [winfo rooty $itk_component(view)]]
2401            tk_popup $itk_component(fieldmenu) $x $y
2402        }
2403        activate {
2404            $c itemconfigure title -fill red
2405        }
2406        deactivate {
2407            $c itemconfigure title -fill white
2408        }
2409        invoke {
2410            $itk_component(field) value $_curFldLabel
2411            AdjustSetting field
2412        }
2413        default {
2414            error "bad option \"$option\": should be post, unpost, select"
2415        }
2416    }
2417}
2418
2419itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2420    array set positions {
2421        front "1 0 0 0"
2422        back  "0 0 1 0"
2423        left  "0.707107 0 -0.707107 0"
2424        right "0.707107 0 0.707107 0"
2425        top   "0.707107 -0.707107 0 0"
2426        bottom "0.707107 0.707107 0 0"
2427    }
2428    foreach name { qw qx qy qz } value $positions($side) {
2429        set _view($name) $value
2430    }
2431    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2432    $_arcball quaternion $q
2433    SendCmd "camera orient $q"
2434    SendCmd "camera reset"
2435    set _view(xpan) 0
2436    set _view(ypan) 0
2437    set _view(zoom) 1.0
2438}
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