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source: branches/1.6/gui/scripts/vtkvolumeviewer.tcl @ 6363

Last change on this file since 6363 was 6363, checked in by ldelgass, 8 years ago
merge viewer fixes from trunk
File size: 82.0 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkvolumeviewer - Vtk volume viewer
4	#
5	# This widget performs volume rendering on 3D scalar/vector datasets.
6	# It connects to the Vtkvis server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2016 HUBzero Foundation, LLC
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	#package require Img
18
19	option add *VtkVolumeViewer.width 4i widgetDefault
20	option add VtkVolumeViewercursor crosshair widgetDefault
21	option add *VtkVolumeViewer.height 4i widgetDefault
22	option add *VtkVolumeViewer.foreground black widgetDefault
23	option add *VtkVolumeViewer.controlBackground gray widgetDefault
24	option add *VtkVolumeViewer.controlDarkBackground #999999 widgetDefault
25	option add *VtkVolumeViewer.plotBackground black widgetDefault
26	option add *VtkVolumeViewer.plotForeground white widgetDefault
27	option add *VtkVolumeViewer.font \
28	--helvetica-medium-r-normal--12-* widgetDefault
29
30	# must use this name -- plugs into Rappture::resources::load
31	proc VtkVolumeViewer_init_resources {} {
32	Rappture::resources::register \
33	vtkvis_server Rappture::VtkVolumeViewer::SetServerList
34	}
35
36	itcl::class Rappture::VtkVolumeViewer {
37	inherit Rappture::VisViewer
38
39	itk_option define -plotforeground plotForeground Foreground ""
40	itk_option define -plotbackground plotBackground Background ""
41
42	constructor { args } {
43	Rappture::VisViewer::constructor
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name colors }
70	private method BuildCutplanesTab {}
71	private method BuildDownloadPopup { widget command }
72	private method BuildViewTab {}
73	private method BuildVolumeTab {}
74	private method ChangeColormap { dataobj comp color }
75	private method Connect {}
76	private method CurrentDatasets {args}
77	private method Disconnect {}
78	private method DoResize {}
79	private method DoRotate {}
80	private method DrawLegend {}
81	private method EnterLegend { x y }
82	private method EventuallyRequestLegend {}
83	private method EventuallyResize { w h }
84	private method EventuallyRotate { q }
85	private method EventuallySetCutplane { axis args }
86	private method GetDatasetsWithComponent { cname }
87	private method GetImage { args }
88	private method GetVtkData { args }
89	private method InitSettings { args }
90	private method IsValidObject { dataobj }
91	private method LeaveLegend {}
92	private method LegendTitleAction { option }
93	private method MotionLegend { x y }
94	private method Pan {option x y}
95	private method PanCamera {}
96	private method Pick {x y}
97	private method QuaternionToView { q } {
98	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
99	}
100	private method Rebuild {}
101	private method ReceiveDataset { args }
102	private method ReceiveImage { args }
103	private method ReceiveLegend { colormap title min max size }
104	private method RequestLegend {}
105	private method Rotate {option x y}
106	private method SetColormap { dataobj comp }
107	private method SetCurrentFieldName { dataobj }
108	private method SetLegendTip { x y }
109	private method SetObjectStyle { dataobj cname }
110	private method SetOrientation { side }
111	private method Slice {option args}
112	private method ViewToQuaternion {} {
113	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
114	}
115	private method Zoom {option}
116
117	private variable _arcball ""
118	private variable _dlist ""; # list of data objects
119	private variable _obj2ovride; # maps dataobj => style override
120	private variable _datasets; # contains all the dataobj-component
121	# datasets in the server
122	private variable _colormaps; # contains all the colormaps
123	# in the server.
124	private variable _dataset2style; # maps dataobj-component to transfunc
125
126	private variable _reset 1; # Connection to server has been reset.
127	private variable _click; # Info used for rotate operations.
128	private variable _limits; # Autoscale min/max for all axes
129	private variable _view; # View params for 3D view
130	private variable _settings
131	private variable _style; # Array of current component styles.
132	private variable _initialStyle; # Array of initial component styles.
133
134	private variable _start 0
135	private variable _title ""
136	private variable _fields
137	private variable _curFldName ""
138	private variable _curFldLabel ""
139	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
140	private variable _cutplaneCmd "imgcutplane"
141	private variable _allowMultiComponent 0
142
143	private variable _first ""; # This is the topmost dataset.
144	private variable _volcomponents; # Maps component name to list of
145	# dataobj-component tags
146	private variable _componentsList; # List of components found
147
148	private variable _width 0
149	private variable _height 0
150	private variable _resizePending 0
151	private variable _legendPending 0
152	private variable _rotatePending 0
153	private variable _cutplanePending 0
154
155	private common _downloadPopup; # download options from popup
156	private common _hardcopy
157	}
158
159	itk::usual VtkVolumeViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkVolumeViewer::constructor {args} {
168	set _serverType "vtkvis"
169
170	#DebugOn
171	EnableWaitDialog 900
172
173	# Rebuild event
174	$_dispatcher register !rebuild
175	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
176
177	# Resize event
178	$_dispatcher register !resize
179	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
180
181	# Legend event
182	$_dispatcher register !legend
183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
184
185	# Rotate event
186	$_dispatcher register !rotate
187	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
188
189	# X-Cutplane event
190	$_dispatcher register !xcutplane
191	$_dispatcher dispatch $this !xcutplane \
192	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
193
194	# Y-Cutplane event
195	$_dispatcher register !ycutplane
196	$_dispatcher dispatch $this !ycutplane \
197	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
198
199	# Z-Cutplane event
200	$_dispatcher register !zcutplane
201	$_dispatcher dispatch $this !zcutplane \
202	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
203
204	#
205	# Populate parser with commands handle incoming requests
206	#
207	$_parser alias image [itcl::code $this ReceiveImage]
208	$_parser alias legend [itcl::code $this ReceiveLegend]
209	$_parser alias dataset [itcl::code $this ReceiveDataset]
210
211	# Initialize the view to some default parameters.
212	array set _view {
213	-ortho 0
214	-qw 0.853553
215	-qx -0.353553
216	-qy 0.353553
217	-qz 0.146447
218	-xpan 0
219	-ypan 0
220	-zoom 1.0
221	}
222	set _arcball [blt::arcball create 100 100]
223	$_arcball quaternion [ViewToQuaternion]
224
225	array set _settings {
226	-axesvisible 1
227	-axislabels 1
228	-axisminorticks 1
229	-axismode "static"
230	-background black
231	-color BCGYR
232	-cutplanelighting 1
233	-cutplaneopacity 100
234	-cutplanesvisible 0
235	-legendvisible 1
236	-volumelighting 1
237	-volumematerial 80
238	-volumeopacity 50
239	-volumeoutline 0
240	-volumequality 80
241	-volumevisible 1
242	-xcutplaneposition 50
243	-xcutplanevisible 1
244	-xgrid 0
245	-ycutplaneposition 50
246	-ycutplanevisible 1
247	-ygrid 0
248	-zcutplaneposition 50
249	-zcutplanevisible 1
250	-zgrid 0
251	}
252
253	itk_component add view {
254	canvas $itk_component(plotarea).view \
255	-highlightthickness 0 -borderwidth 0
256	} {
257	usual
258	ignore -highlightthickness -borderwidth -background
259	}
260
261	itk_component add fieldmenu {
262	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
263	-tearoff 0
264	} {
265	usual
266	ignore -background -foreground -relief -tearoff
267	}
268	set c $itk_component(view)
269	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
270	bind $c <Control-F1> [itcl::code $this ToggleConsole]
271
272	# Fixes the scrollregion in case we go off screen
273	$c configure -scrollregion [$c bbox all]
274
275	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
276	set _map(cwidth) -1
277	set _map(cheight) -1
278	set _map(zoom) 1.0
279	set _map(original) ""
280
281	set f [$itk_component(main) component controls]
282	itk_component add reset {
283	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
284	-highlightthickness 0 \
285	-image [Rappture::icon reset-view] \
286	-command [itcl::code $this Zoom reset]
287	} {
288	usual
289	ignore -highlightthickness
290	}
291	pack $itk_component(reset) -side top -padx 2 -pady 2
292	Rappture::Tooltip::for $itk_component(reset) \
293	"Reset the view to the default zoom level"
294
295	itk_component add zoomin {
296	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
297	-highlightthickness 0 \
298	-image [Rappture::icon zoom-in] \
299	-command [itcl::code $this Zoom in]
300	} {
301	usual
302	ignore -highlightthickness
303	}
304	pack $itk_component(zoomin) -side top -padx 2 -pady 2
305	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
306
307	itk_component add zoomout {
308	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
309	-highlightthickness 0 \
310	-image [Rappture::icon zoom-out] \
311	-command [itcl::code $this Zoom out]
312	} {
313	usual
314	ignore -highlightthickness
315	}
316	pack $itk_component(zoomout) -side top -padx 2 -pady 2
317	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
318
319	itk_component add volume {
320	Rappture::PushButton $f.volume \
321	-onimage [Rappture::icon volume-on] \
322	-offimage [Rappture::icon volume-off] \
323	-variable [itcl::scope _settings(-volumevisible)] \
324	-command [itcl::code $this AdjustSetting -volumevisible]
325	}
326	$itk_component(volume) select
327	Rappture::Tooltip::for $itk_component(volume) \
328	"Don't display the volume"
329	pack $itk_component(volume) -padx 2 -pady 2
330
331	itk_component add cutplane {
332	Rappture::PushButton $f.cutplane \
333	-onimage [Rappture::icon cutbutton] \
334	-offimage [Rappture::icon cutbutton] \
335	-variable [itcl::scope _settings(-cutplanesvisible)] \
336	-command [itcl::code $this AdjustSetting -cutplanesvisible]
337	}
338	Rappture::Tooltip::for $itk_component(cutplane) \
339	"Show/Hide cutplanes"
340	pack $itk_component(cutplane) -padx 2 -pady 2
341
342	if { [catch {
343	BuildViewTab
344	BuildVolumeTab
345	BuildCutplanesTab
346	BuildAxisTab
347	BuildCameraTab
348	} errs] != 0 } {
349	puts stderr errs=$errs
350	}
351
352	# Legend
353	set _image(legend) [image create photo]
354	itk_component add legend {
355	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
356	} {
357	usual
358	ignore -highlightthickness
359	rename -background -plotbackground plotBackground Background
360	}
361
362	# Hack around the Tk panewindow. The problem is that the requested
363	# size of the 3d view isn't set until an image is retrieved from
364	# the server. So the panewindow uses the tiny size.
365	set w 10000
366	pack forget $itk_component(view)
367	blt::table $itk_component(plotarea) \
368	0,0 $itk_component(view) -fill both -reqwidth $w
369	blt::table configure $itk_component(plotarea) c1 -resize none
370
371	# Bindings for rotation via mouse
372	bind $itk_component(view) <ButtonPress-1> \
373	[itcl::code $this Rotate click %x %y]
374	bind $itk_component(view) <B1-Motion> \
375	[itcl::code $this Rotate drag %x %y]
376	bind $itk_component(view) <ButtonRelease-1> \
377	[itcl::code $this Rotate release %x %y]
378
379	# Bindings for panning via mouse
380	bind $itk_component(view) <ButtonPress-2> \
381	[itcl::code $this Pan click %x %y]
382	bind $itk_component(view) <B2-Motion> \
383	[itcl::code $this Pan drag %x %y]
384	bind $itk_component(view) <ButtonRelease-2> \
385	[itcl::code $this Pan release %x %y]
386
387	#bind $itk_component(view) <ButtonRelease-3> \
388	# [itcl::code $this Pick %x %y]
389
390	# Bindings for panning via keyboard
391	bind $itk_component(view) <KeyPress-Left> \
392	[itcl::code $this Pan set -10 0]
393	bind $itk_component(view) <KeyPress-Right> \
394	[itcl::code $this Pan set 10 0]
395	bind $itk_component(view) <KeyPress-Up> \
396	[itcl::code $this Pan set 0 -10]
397	bind $itk_component(view) <KeyPress-Down> \
398	[itcl::code $this Pan set 0 10]
399	bind $itk_component(view) <Shift-KeyPress-Left> \
400	[itcl::code $this Pan set -2 0]
401	bind $itk_component(view) <Shift-KeyPress-Right> \
402	[itcl::code $this Pan set 2 0]
403	bind $itk_component(view) <Shift-KeyPress-Up> \
404	[itcl::code $this Pan set 0 -2]
405	bind $itk_component(view) <Shift-KeyPress-Down> \
406	[itcl::code $this Pan set 0 2]
407
408	# Bindings for zoom via keyboard
409	bind $itk_component(view) <KeyPress-Prior> \
410	[itcl::code $this Zoom out]
411	bind $itk_component(view) <KeyPress-Next> \
412	[itcl::code $this Zoom in]
413
414	bind $itk_component(view) <Enter> "focus $itk_component(view)"
415
416	if {[string equal "x11" [tk windowingsystem]]} {
417	# Bindings for zoom via mouse
418	bind $itk_component(view) <4> [itcl::code $this Zoom out]
419	bind $itk_component(view) <5> [itcl::code $this Zoom in]
420	}
421
422	set _image(download) [image create photo]
423
424	eval itk_initialize $args
425	Connect
426	}
427
428	# ----------------------------------------------------------------------
429	# DESTRUCTOR
430	# ----------------------------------------------------------------------
431	itcl::body Rappture::VtkVolumeViewer::destructor {} {
432	Disconnect
433	image delete $_image(plot)
434	image delete $_image(download)
435	catch { blt::arcball destroy $_arcball }
436	}
437
438	itcl::body Rappture::VtkVolumeViewer::DoResize {} {
439	if { $_width < 2 } {
440	set _width 500
441	}
442	if { $_height < 2 } {
443	set _height 500
444	}
445	set _start [clock clicks -milliseconds]
446	SendCmd "screen size $_width $_height"
447
448	EventuallyRequestLegend
449	set _resizePending 0
450	}
451
452	itcl::body Rappture::VtkVolumeViewer::DoRotate {} {
453	SendCmd "camera orient [ViewToQuaternion]"
454	set _rotatePending 0
455	}
456
457	itcl::body Rappture::VtkVolumeViewer::EventuallyResize { w h } {
458	set _width $w
459	set _height $h
460	$_arcball resize $w $h
461	if { !$_resizePending } {
462	set _resizePending 1
463	$_dispatcher event -after 400 !resize
464	}
465	}
466
467	itcl::body Rappture::VtkVolumeViewer::EventuallyRequestLegend {} {
468	if { !$_legendPending } {
469	set _legendPending 1
470	$_dispatcher event -idle !legend
471	}
472	}
473
474	itcl::body Rappture::VtkVolumeViewer::EventuallyRotate { q } {
475	QuaternionToView $q
476	if { !$_rotatePending } {
477	set _rotatePending 1
478	$_dispatcher event -after 100 !rotate
479	}
480	}
481
482	itcl::body Rappture::VtkVolumeViewer::EventuallySetCutplane { axis args } {
483	if { !$_cutplanePending } {
484	set _cutplanePending 1
485	$_dispatcher event -after 100 !${axis}cutplane
486	}
487	}
488
489	# ----------------------------------------------------------------------
490	# USAGE: add <dataobj> ?<settings>?
491	#
492	# Clients use this to add a data object to the plot. The optional
493	# <settings> are used to configure the plot. Allowed settings are
494	# -color, -brightness, -width, -linestyle, and -raise.
495	# ----------------------------------------------------------------------
496	itcl::body Rappture::VtkVolumeViewer::add {dataobj {settings ""}} {
497	DebugTrace "Enter"
498	if { ![IsValidObject $dataobj] } {
499	DebugTrace "Invalid"
500	return; # Ignore invalid objects.
501	}
502	array set params {
503	-color auto
504	-width 1
505	-linestyle solid
506	-brightness 0
507	-raise 0
508	-description ""
509	-param ""
510	-type ""
511	}
512	array set params $settings
513
514	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
515	# can't handle -autocolors yet
516	set params(-color) black
517	}
518	set pos [lsearch -exact $_dlist $dataobj]
519	if {$pos < 0} {
520	lappend _dlist $dataobj
521	}
522	set _obj2ovride($dataobj-color) $params(-color)
523	set _obj2ovride($dataobj-width) $params(-width)
524	set _obj2ovride($dataobj-raise) $params(-raise)
525	$_dispatcher event -idle !rebuild
526	}
527
528
529	# ----------------------------------------------------------------------
530	# USAGE: delete ?<dataobj1> <dataobj2> ...?
531	#
532	# Clients use this to delete a dataobj from the plot. If no dataobjs
533	# are specified, then all dataobjs are deleted. No data objects are
534	# deleted. They are only removed from the display list.
535	# ----------------------------------------------------------------------
536	itcl::body Rappture::VtkVolumeViewer::delete {args} {
537	DebugTrace "Enter"
538	if { [llength $args] == 0} {
539	set args $_dlist
540	}
541	# Delete all specified dataobjs
542	set changed 0
543	foreach dataobj $args {
544	set pos [lsearch -exact $_dlist $dataobj]
545	if { $pos < 0 } {
546	continue; # Don't know anything about it.
547	}
548	# Remove it from the dataobj list.
549	set _dlist [lreplace $_dlist $pos $pos]
550	array unset _obj2ovride $dataobj-*
551	set changed 1
552	}
553	# If anything changed, then rebuild the plot
554	if { $changed } {
555	$_dispatcher event -idle !rebuild
556	}
557	}
558
559	# ----------------------------------------------------------------------
560	# USAGE: get ?-objects?
561	# USAGE: get ?-visible?
562	# USAGE: get ?-image view?
563	#
564	# Clients use this to query the list of objects being plotted, in
565	# order from bottom to top of this result. The optional "-image"
566	# flag can also request the internal images being shown.
567	# ----------------------------------------------------------------------
568	itcl::body Rappture::VtkVolumeViewer::get {args} {
569	if {[llength $args] == 0} {
570	set args "-objects"
571	}
572
573	set op [lindex $args 0]
574	switch -- $op {
575	"-objects" {
576	# put the dataobj list in order according to -raise options
577	set dlist {}
578	foreach dataobj $_dlist {
579	if { ![IsValidObject $dataobj] } {
580	continue
581	}
582	if {[info exists _obj2ovride($dataobj-raise)] &&
583	$_obj2ovride($dataobj-raise)} {
584	set dlist [linsert $dlist 0 $dataobj]
585	} else {
586	lappend dlist $dataobj
587	}
588	}
589	return $dlist
590	}
591	"-visible" {
592	set dlist {}
593	foreach dataobj $_dlist {
594	if { ![IsValidObject $dataobj] } {
595	continue
596	}
597	if { ![info exists _obj2ovride($dataobj-raise)] } {
598	# No setting indicates that the object isn't visible.
599	continue
600	}
601	# Otherwise use the -raise parameter to put the object to
602	# the front of the list.
603	if { $_obj2ovride($dataobj-raise) } {
604	set dlist [linsert $dlist 0 $dataobj]
605	} else {
606	lappend dlist $dataobj
607	}
608	}
609	return $dlist
610	}
611	"-image" {
612	if {[llength $args] != 2} {
613	error "wrong # args: should be \"get -image view\""
614	}
615	switch -- [lindex $args end] {
616	view {
617	return $_image(plot)
618	}
619	default {
620	error "bad image name \"[lindex $args end]\": should be view"
621	}
622	}
623	}
624	default {
625	error "bad option \"$op\": should be -objects, -visible or -image"
626	}
627	}
628	}
629
630	# ----------------------------------------------------------------------
631	# USAGE: scale ?<data1> <data2> ...?
632	#
633	# Sets the default limits for the overall plot according to the
634	# limits of the data for all of the given <data> objects. This
635	# accounts for all objects--even those not showing on the screen.
636	# Because of this, the limits are appropriate for all objects as
637	# the user scans through data in the ResultSet viewer.
638	# ----------------------------------------------------------------------
639	itcl::body Rappture::VtkVolumeViewer::scale {args} {
640	DebugTrace "Enter"
641	array unset _limits
642	array unset _volcomponents
643	set _componentsList ""
644
645	foreach dataobj $args {
646	if { ![$dataobj isvalid] } {
647	continue; # Object doesn't contain valid data.
648	}
649	# Determine limits for each axis.
650	foreach axis { x y z } {
651	set lim [$dataobj limits $axis]
652	if { ![info exists _limits($axis)] } {
653	set _limits($axis) $lim
654	continue
655	}
656	foreach {min max} $lim break
657	foreach {amin amax} $_limits($axis) break
658	if { $amin > $min } {
659	set amin $min
660	}
661	if { $amax < $max } {
662	set amax $max
663	}
664	set _limits($axis) [list $amin $amax]
665	}
666	# Determine limits for each field.
667	foreach { fname lim } [$dataobj fieldlimits] {
668	if { ![info exists _limits($fname)] } {
669	set _limits($fname) $lim
670	continue
671	}
672	foreach {min max} $lim break
673	foreach {fmin fmax} $_limits($fname) break
674	if { $fmin > $min } {
675	set fmin $min
676	}
677	if { $fmax < $max } {
678	set fmax $max
679	}
680	set _limits($fname) [list $fmin $fmax]
681	}
682	# Get limits for each component.
683	foreach cname [$dataobj components] {
684	if { ![info exists _volcomponents($cname)] } {
685	lappend _componentsList $cname
686	}
687	lappend _volcomponents($cname) $dataobj-$cname
688	array unset limits
689	array set limits [$dataobj valueLimits $cname]
690	if { ![info exists _limits($cname)] } {
691	set _limits($cname) $limits(v)
692	continue
693	}
694	foreach {min max} $limits(v) break
695	foreach {vmin vmax} $_limits($cname) break
696	if { $vmin > $min } {
697	set vmin $min
698	}
699	if { $vmax < $max } {
700	set vmax $max
701	}
702	set _limits($cname) [list $vmin $vmax]
703	}
704	}
705	}
706
707	# ----------------------------------------------------------------------
708	# USAGE: download coming
709	# USAGE: download controls <downloadCommand>
710	# USAGE: download now
711	#
712	# Clients use this method to create a downloadable representation
713	# of the plot. Returns a list of the form {ext string}, where
714	# "ext" is the file extension (indicating the type of data) and
715	# "string" is the data itself.
716	# ----------------------------------------------------------------------
717	itcl::body Rappture::VtkVolumeViewer::download {option args} {
718	switch $option {
719	coming {
720	if {[catch {
721	blt::winop snap $itk_component(plotarea) $_image(download)
722	}]} {
723	$_image(download) configure -width 1 -height 1
724	$_image(download) put #000000
725	}
726	}
727	controls {
728	set popup .vtkviewerdownload
729	if { ![winfo exists .vtkviewerdownload] } {
730	set inner [BuildDownloadPopup $popup [lindex $args 0]]
731	} else {
732	set inner [$popup component inner]
733	}
734	set _downloadPopup(image_controls) $inner.image_frame
735	set num [llength [get]]
736	set num [expr {($num == 1) ? "1 result" : "$num results"}]
737	set word [Rappture::filexfer::label downloadWord]
738	$inner.summary configure -text "$word $num in the following format:"
739	update idletasks ;# Fix initial sizes
740	return $popup
741	}
742	now {
743	set popup .vtkviewerdownload
744	if {[winfo exists .vtkviewerdownload]} {
745	$popup deactivate
746	}
747	switch -- $_downloadPopup(format) {
748	"image" {
749	return [$this GetImage [lindex $args 0]]
750	}
751	"vtk" {
752	return [$this GetVtkData [lindex $args 0]]
753	}
754	}
755	return ""
756	}
757	default {
758	error "bad option \"$option\": should be coming, controls, now"
759	}
760	}
761	}
762
763	# ----------------------------------------------------------------------
764	# USAGE: Connect ?<host:port>,<host:port>...?
765	#
766	# Clients use this method to establish a connection to a new
767	# server, or to reestablish a connection to the previous server.
768	# Any existing connection is automatically closed.
769	# ----------------------------------------------------------------------
770	itcl::body Rappture::VtkVolumeViewer::Connect {} {
771	set _hosts [GetServerList "vtkvis"]
772	if { "" == $_hosts } {
773	return 0
774	}
775	set _reset 1
776	set result [VisViewer::Connect $_hosts]
777	if { $result } {
778	if { $_reportClientInfo } {
779	# Tell the server the viewer, hub, user and session.
780	# Do this immediately on connect before buffering any commands
781	global env
782
783	set info {}
784	set user "???"
785	if { [info exists env(USER)] } {
786	set user $env(USER)
787	}
788	set session "???"
789	if { [info exists env(SESSION)] } {
790	set session $env(SESSION)
791	}
792	lappend info "version" "$Rappture::version"
793	lappend info "build" "$Rappture::build"
794	lappend info "svnurl" "$Rappture::svnurl"
795	lappend info "installdir" "$Rappture::installdir"
796	lappend info "hub" [exec hostname]
797	lappend info "client" "vtkvolumeviewer"
798	lappend info "user" $user
799	lappend info "session" $session
800	SendCmd "clientinfo [list $info]"
801	}
802
803	set w [winfo width $itk_component(view)]
804	set h [winfo height $itk_component(view)]
805	EventuallyResize $w $h
806	}
807	return $result
808	}
809
810	#
811	# isconnected --
812	#
813	# Indicates if we are currently connected to the visualization server.
814	#
815	itcl::body Rappture::VtkVolumeViewer::isconnected {} {
816	return [VisViewer::IsConnected]
817	}
818
819	#
820	# disconnect --
821	#
822	itcl::body Rappture::VtkVolumeViewer::disconnect {} {
823	Disconnect
824	set _reset 1
825	}
826
827	#
828	# Disconnect --
829	#
830	# Clients use this method to disconnect from the current rendering server.
831	#
832	itcl::body Rappture::VtkVolumeViewer::Disconnect {} {
833	VisViewer::Disconnect
834
835	$_dispatcher cancel !rebuild
836	$_dispatcher cancel !resize
837	$_dispatcher cancel !rotate
838	$_dispatcher cancel !xcutplane
839	$_dispatcher cancel !ycutplane
840	$_dispatcher cancel !zcutplane
841	$_dispatcher cancel !legend
842	# disconnected -- no more data sitting on server
843	array unset _datasets
844	array unset _colormaps
845	array unset _dataset2style
846
847	set _resizePending 0
848	set _rotatePending 0
849	set _cutplanePending 0
850	set _legendPending 0
851	}
852
853	# ----------------------------------------------------------------------
854	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
855	#
856	# Invoked automatically whenever the "image" command comes in from
857	# the rendering server. Indicates that binary image data with the
858	# specified <size> will follow.
859	# ----------------------------------------------------------------------
860	itcl::body Rappture::VtkVolumeViewer::ReceiveImage { args } {
861	array set info {
862	-token "???"
863	-bytes 0
864	-type image
865	}
866	array set info $args
867	set bytes [ReceiveBytes $info(-bytes)]
868	StopWaiting
869	if { $info(-type) == "image" } {
870	if 0 {
871	set f [open "last.ppm" "w"]
872	fconfigure $f -encoding binary
873	puts -nonewline $f $bytes
874	close $f
875	}
876	$_image(plot) configure -data $bytes
877	#puts stderr "[clock format [clock seconds]]: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
878	if { $_start > 0 } {
879	set finish [clock clicks -milliseconds]
880	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
881	set _start 0
882	}
883	} elseif { $info(type) == "print" } {
884	set tag $this-print-$info(-token)
885	set _hardcopy($tag) $bytes
886	}
887	}
888
889	#
890	# ReceiveDataset --
891	#
892	itcl::body Rappture::VtkVolumeViewer::ReceiveDataset { args } {
893	if { ![isconnected] } {
894	return
895	}
896	set option [lindex $args 0]
897	switch -- $option {
898	"scalar" {
899	set option [lindex $args 1]
900	switch -- $option {
901	"world" {
902	foreach { x y z value tag } [lrange $args 2 end] break
903	}
904	"pixel" {
905	foreach { x y value tag } [lrange $args 2 end] break
906	}
907	}
908	}
909	"vector" {
910	set option [lindex $args 1]
911	switch -- $option {
912	"world" {
913	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
914	}
915	"pixel" {
916	foreach { x y vx vy vz tag } [lrange $args 2 end] break
917	}
918	}
919	}
920	"names" {
921	foreach { name } [lindex $args 1] {
922	#puts stderr "Dataset: $name"
923	}
924	}
925	default {
926	error "unknown dataset option \"$option\" from server"
927	}
928	}
929	}
930
931	# ----------------------------------------------------------------------
932	# USAGE: Rebuild
933	#
934	# Called automatically whenever something changes that affects the
935	# data in the widget. Clears any existing data and rebuilds the
936	# widget to display new data.
937	# ----------------------------------------------------------------------
938	itcl::body Rappture::VtkVolumeViewer::Rebuild {} {
939	set w [winfo width $itk_component(view)]
940	set h [winfo height $itk_component(view)]
941	if { $w < 2 \|\| $h < 2 } {
942	update
943	$_dispatcher event -idle !rebuild
944	return
945	}
946
947	# Turn on buffering of commands to the server. We don't want to
948	# be preempted by a server disconnect/reconnect (which automatically
949	# generates a new call to Rebuild).
950	StartBufferingCommands
951
952	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
953	set _width $w
954	set _height $h
955	$_arcball resize $w $h
956	DoResize
957	}
958	if { $_reset } {
959	#
960	# Reset the camera and other view parameters
961	#
962	$_arcball quaternion [ViewToQuaternion]
963	if {$_view(-ortho)} {
964	SendCmd "camera mode ortho"
965	} else {
966	SendCmd "camera mode persp"
967	}
968	DoRotate
969	PanCamera
970	set _first ""
971	InitSettings -background \
972	-xgrid -ygrid -zgrid -axismode \
973	-axesvisible -axislabels -axisminorticks
974	StopBufferingCommands
975	SendCmd "imgflush"
976	StartBufferingCommands
977	}
978
979	set _first ""
980	# No volumes are active (i.e. in the working set of displayed volumes).
981	# A volume is always invisible if it's not in the working set. A
982	# volume in the working set may be visible/invisible depending upon the
983	# global visibility value.
984	SendCmd "dataset visible 0"
985	foreach dataobj [get -objects] {
986	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
987	set _first $dataobj
988	SetCurrentFieldName $dataobj
989	}
990	foreach cname [$dataobj components] {
991	set tag $dataobj-$cname
992	if { ![info exists _datasets($tag)] } {
993	set bytes [$dataobj vtkdata $cname]
994	if 0 {
995	set f [open /tmp/vtkvolume.vtk "w"]
996	fconfigure $f -translation binary -encoding binary
997	puts -nonewline $f $bytes
998	close $f
999	}
1000	set length [string length $bytes]
1001	if { $_reportClientInfo } {
1002	set info {}
1003	lappend info "tool_id" [$dataobj hints toolid]
1004	lappend info "tool_name" [$dataobj hints toolname]
1005	lappend info "tool_title" [$dataobj hints tooltitle]
1006	lappend info "tool_command" [$dataobj hints toolcommand]
1007	lappend info "tool_revision" [$dataobj hints toolrevision]
1008	lappend info "dataset_label" [$dataobj hints label]
1009	lappend info "dataset_size" $length
1010	lappend info "dataset_tag" $tag
1011	SendCmd "clientinfo [list $info]"
1012	}
1013	SendCmd "dataset add $tag data follows $length"
1014	SendData $bytes
1015	set _datasets($tag) 1
1016	SetObjectStyle $dataobj $cname
1017	}
1018	if { [info exists _obj2ovride($dataobj-raise)] } {
1019	SendCmd "volume visible 1 $tag"
1020	}
1021	break
1022	}
1023	}
1024	if {"" != $_first} {
1025	foreach axis { x y z } {
1026	set label [$_first hints ${axis}label]
1027	if { $label != "" } {
1028	SendCmd [list axis name $axis $label]
1029	}
1030	set units [$_first hints ${axis}units]
1031	if { $units != "" } {
1032	SendCmd [list axis units $axis $units]
1033	}
1034	}
1035	}
1036
1037	InitSettings -color \
1038	-volumevisible \
1039	-volumematerial \
1040	-volumelighting -volumeopacity -volumequality -volumeoutline \
1041	-cutplanesvisible \
1042	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1043	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1044
1045	if { $_reset } {
1046	SendCmd "camera reset"
1047	SendCmd "camera zoom $_view(-zoom)"
1048	RequestLegend
1049	set _reset 0
1050	}
1051	# Actually write the commands to the server socket. If it fails, we don't
1052	# care. We're finished here.
1053	blt::busy hold $itk_component(hull)
1054	StopBufferingCommands
1055	blt::busy release $itk_component(hull)
1056	}
1057
1058	# ----------------------------------------------------------------------
1059	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1060	#
1061	# Returns a list of server IDs for the current datasets being displayed. This
1062	# is normally a single ID, but it might be a list of IDs if the current data
1063	# object has multiple components.
1064	# ----------------------------------------------------------------------
1065	itcl::body Rappture::VtkVolumeViewer::CurrentDatasets {args} {
1066	set flag [lindex $args 0]
1067	switch -- $flag {
1068	"-all" {
1069	if { [llength $args] > 1 } {
1070	error "CurrentDatasets: can't specify dataobj after \"-all\""
1071	}
1072	set dlist [get -objects]
1073	}
1074	"-visible" {
1075	if { [llength $args] > 1 } {
1076	set dlist {}
1077	set args [lrange $args 1 end]
1078	foreach dataobj $args {
1079	if { [info exists _obj2ovride($dataobj-raise)] } {
1080	lappend dlist $dataobj
1081	}
1082	}
1083	} else {
1084	set dlist [get -visible]
1085	}
1086	}
1087	default {
1088	set dlist $args
1089	}
1090	}
1091	set rlist ""
1092	foreach dataobj $dlist {
1093	foreach comp [$dataobj components] {
1094	set tag $dataobj-$comp
1095	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1096	lappend rlist $tag
1097	}
1098	}
1099	}
1100	return $rlist
1101	}
1102
1103	# ----------------------------------------------------------------------
1104	# USAGE: Zoom in
1105	# USAGE: Zoom out
1106	# USAGE: Zoom reset
1107	#
1108	# Called automatically when the user clicks on one of the zoom
1109	# controls for this widget. Changes the zoom for the current view.
1110	# ----------------------------------------------------------------------
1111	itcl::body Rappture::VtkVolumeViewer::Zoom {option} {
1112	switch -- $option {
1113	"in" {
1114	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1115	SendCmd "camera zoom $_view(-zoom)"
1116	}
1117	"out" {
1118	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1119	SendCmd "camera zoom $_view(-zoom)"
1120	}
1121	"reset" {
1122	array set _view {
1123	-qw 0.853553
1124	-qx -0.353553
1125	-qy 0.353553
1126	-qz 0.146447
1127	-xpan 0
1128	-ypan 0
1129	-zoom 1.0
1130	}
1131	if { $_first != "" } {
1132	set location [$_first hints camera]
1133	if { $location != "" } {
1134	array set _view $location
1135	}
1136	}
1137	$_arcball quaternion [ViewToQuaternion]
1138	DoRotate
1139	SendCmd "camera reset"
1140	}
1141	}
1142	}
1143
1144	itcl::body Rappture::VtkVolumeViewer::PanCamera {} {
1145	set x $_view(-xpan)
1146	set y $_view(-ypan)
1147	SendCmd "camera pan $x $y"
1148	}
1149
1150	# ----------------------------------------------------------------------
1151	# USAGE: Rotate click <x> <y>
1152	# USAGE: Rotate drag <x> <y>
1153	# USAGE: Rotate release <x> <y>
1154	#
1155	# Called automatically when the user clicks/drags/releases in the
1156	# plot area. Moves the plot according to the user's actions.
1157	# ----------------------------------------------------------------------
1158	itcl::body Rappture::VtkVolumeViewer::Rotate {option x y} {
1159	switch -- $option {
1160	"click" {
1161	$itk_component(view) configure -cursor fleur
1162	set _click(x) $x
1163	set _click(y) $y
1164	}
1165	"drag" {
1166	if {[array size _click] == 0} {
1167	Rotate click $x $y
1168	} else {
1169	set w [winfo width $itk_component(view)]
1170	set h [winfo height $itk_component(view)]
1171	if {$w <= 0 \|\| $h <= 0} {
1172	return
1173	}
1174
1175	if {[catch {
1176	# this fails sometimes for no apparent reason
1177	set dx [expr {double($x-$_click(x))/$w}]
1178	set dy [expr {double($y-$_click(y))/$h}]
1179	}]} {
1180	return
1181	}
1182	if { $dx == 0 && $dy == 0 } {
1183	return
1184	}
1185	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1186	EventuallyRotate $q
1187	set _click(x) $x
1188	set _click(y) $y
1189	}
1190	}
1191	"release" {
1192	Rotate drag $x $y
1193	$itk_component(view) configure -cursor ""
1194	catch {unset _click}
1195	}
1196	default {
1197	error "bad option \"$option\": should be click, drag, release"
1198	}
1199	}
1200	}
1201
1202	itcl::body Rappture::VtkVolumeViewer::Pick {x y} {
1203	foreach tag [CurrentDatasets -visible] {
1204	SendCmd "dataset getscalar pixel $x $y $tag"
1205	}
1206	}
1207
1208	# ----------------------------------------------------------------------
1209	# USAGE: $this Pan click x y
1210	# $this Pan drag x y
1211	# $this Pan release x y
1212	#
1213	# Called automatically when the user clicks on one of the zoom
1214	# controls for this widget. Changes the zoom for the current view.
1215	# ----------------------------------------------------------------------
1216	itcl::body Rappture::VtkVolumeViewer::Pan {option x y} {
1217	switch -- $option {
1218	"set" {
1219	set w [winfo width $itk_component(view)]
1220	set h [winfo height $itk_component(view)]
1221	set x [expr $x / double($w)]
1222	set y [expr $y / double($h)]
1223	set _view(-xpan) [expr $_view(-xpan) + $x]
1224	set _view(-ypan) [expr $_view(-ypan) + $y]
1225	PanCamera
1226	return
1227	}
1228	"click" {
1229	set _click(x) $x
1230	set _click(y) $y
1231	$itk_component(view) configure -cursor hand1
1232	}
1233	"drag" {
1234	if { ![info exists _click(x)] } {
1235	set _click(x) $x
1236	}
1237	if { ![info exists _click(y)] } {
1238	set _click(y) $y
1239	}
1240	set w [winfo width $itk_component(view)]
1241	set h [winfo height $itk_component(view)]
1242	set dx [expr ($_click(x) - $x)/double($w)]
1243	set dy [expr ($_click(y) - $y)/double($h)]
1244	set _click(x) $x
1245	set _click(y) $y
1246	set _view(-xpan) [expr $_view(-xpan) - $dx]
1247	set _view(-ypan) [expr $_view(-ypan) - $dy]
1248	PanCamera
1249	}
1250	"release" {
1251	Pan drag $x $y
1252	$itk_component(view) configure -cursor ""
1253	}
1254	default {
1255	error "unknown option \"$option\": should set, click, drag, or release"
1256	}
1257	}
1258	}
1259
1260	# ----------------------------------------------------------------------
1261	# USAGE: InitSettings <what> ?<value>?
1262	#
1263	# Used internally to update rendering settings whenever parameters
1264	# change in the popup settings panel. Sends the new settings off
1265	# to the back end.
1266	# ----------------------------------------------------------------------
1267	itcl::body Rappture::VtkVolumeViewer::InitSettings { args } {
1268	foreach spec $args {
1269	AdjustSetting $spec
1270	}
1271	}
1272
1273	#
1274	# AdjustSetting --
1275	#
1276	# Changes/updates a specific setting in the widget. There are
1277	# usually user-setable option. Commands are sent to the render
1278	# server.
1279	#
1280	itcl::body Rappture::VtkVolumeViewer::AdjustSetting {what {value ""}} {
1281	if { ![isconnected] } {
1282	return
1283	}
1284	switch -- $what {
1285	"-axesvisible" {
1286	set bool $_settings($what)
1287	SendCmd "axis visible all $bool"
1288	}
1289	"-axislabels" {
1290	set bool $_settings($what)
1291	SendCmd "axis labels all $bool"
1292	}
1293	"-axisminorticks" {
1294	set bool $_settings($what)
1295	SendCmd "axis minticks all $bool"
1296	}
1297	"-axismode" {
1298	set mode [$itk_component(axismode) value]
1299	set mode [$itk_component(axismode) translate $mode]
1300	set _settings($what) $mode
1301	SendCmd "axis flymode $mode"
1302	}
1303	"-background" {
1304	set bgcolor [$itk_component(background) value]
1305	set _settings($what) $bgcolor
1306	array set fgcolors {
1307	"black" "white"
1308	"white" "black"
1309	"grey" "black"
1310	}
1311	configure -plotbackground $bgcolor \
1312	-plotforeground $fgcolors($bgcolor)
1313	$itk_component(view) delete "legend"
1314	DrawLegend
1315	}
1316	"-color" {
1317	set color [$itk_component(colormap) value]
1318	set _settings($what) $color
1319	foreach dataset [CurrentDatasets -visible $_first] {
1320	foreach {dataobj comp} [split $dataset -] break
1321	ChangeColormap $dataobj $comp $color
1322	}
1323	EventuallyRequestLegend
1324	}
1325	"-cutplanelighting" {
1326	set bool $_settings($what)
1327	foreach dataset [CurrentDatasets -visible] {
1328	if {$_cutplaneCmd != "imgcutplane"} {
1329	SendCmd "$_cutplaneCmd lighting $bool $dataset"
1330	} else {
1331	if {$bool} {
1332	set ambient 0.0
1333	set diffuse 1.0
1334	} else {
1335	set ambient 1.0
1336	set diffuse 0.0
1337	}
1338	SendCmd "imgcutplane material $ambient $diffuse $dataset"
1339	}
1340	}
1341	}
1342	"-cutplaneopacity" {
1343	set val $_settings($what)
1344	set sval [expr { 0.01 * double($val) }]
1345	foreach dataset [CurrentDatasets -visible] {
1346	SendCmd "$_cutplaneCmd opacity $sval $dataset"
1347	}
1348	}
1349	"-cutplanesvisible" {
1350	set bool $_settings($what)
1351	foreach dataset [CurrentDatasets -visible] {
1352	SendCmd "$_cutplaneCmd visible $bool $dataset"
1353	}
1354	}
1355	"-field" {
1356	set label [$itk_component(field) value]
1357	set fname [$itk_component(field) translate $label]
1358	set _settings($what) $fname
1359	if { [info exists _fields($fname)] } {
1360	foreach { label units components } $_fields($fname) break
1361	if { !$_allowMultiComponent && $components > 1 } {
1362	puts stderr "Can't use a vector field in a volume"
1363	return
1364	} else {
1365	if { $components > 1 } {
1366	set _colorMode vmag
1367	} else {
1368	set _colorMode scalar
1369	}
1370	}
1371	set _curFldName $fname
1372	set _curFldLabel $label
1373	} else {
1374	puts stderr "unknown field \"$fname\""
1375	return
1376	}
1377	foreach dataset [CurrentDatasets -visible $_first] {
1378	#SendCmd "$_cutplaneCmd colormode $_colorMode $_curFldName $dataset"
1379	SendCmd "dataset scalar $_curFldName $dataset"
1380	}
1381	SendCmd "camera reset"
1382	DrawLegend
1383	}
1384	"-legendvisible" {
1385	DrawLegend
1386	}
1387	"-volumematerial" {
1388	set val $_settings($what)
1389	set diffuse [expr {0.01*$val}]
1390	set specular [expr {0.01*$val}]
1391	#set power [expr {sqrt(160*$val+1.0)}]
1392	set power [expr {$val+1.0}]
1393	foreach tag [CurrentDatasets -visible] {
1394	SendCmd "volume shading diffuse $diffuse $tag"
1395	SendCmd "volume shading specular $specular $power $tag"
1396	}
1397	}
1398	"-volumelighting" {
1399	set bool $_settings($what)
1400	foreach tag [CurrentDatasets -visible] {
1401	SendCmd "volume lighting $bool $tag"
1402	}
1403	}
1404	"-volumeopacity" {
1405	set val $_settings($what)
1406	set val [expr {0.01*$val}]
1407	foreach tag [CurrentDatasets -visible] {
1408	SendCmd "volume opacity $val $tag"
1409	}
1410	}
1411	"-volumeoutline" {
1412	set bool $_settings($what)
1413	SendCmd "outline visible 0"
1414	foreach tag [CurrentDatasets -visible] {
1415	SendCmd "outline visible $bool $tag"
1416	}
1417	}
1418	"-volumequality" {
1419	set val $_settings($what)
1420	set val [expr {0.01*$val}]
1421	foreach tag [CurrentDatasets -visible] {
1422	SendCmd "volume quality $val $tag"
1423	}
1424	}
1425	"-volumevisible" {
1426	set bool $_settings($what)
1427	foreach tag [CurrentDatasets -visible] {
1428	SendCmd "volume visible $bool $tag"
1429	}
1430	if { $bool } {
1431	Rappture::Tooltip::for $itk_component(volume) \
1432	"Hide the volume"
1433	} else {
1434	Rappture::Tooltip::for $itk_component(volume) \
1435	"Show the volume"
1436	}
1437	}
1438	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1439	set axis [string range $what 1 1]
1440	set bool $_settings($what)
1441	if { $bool } {
1442	$itk_component(${axis}CutScale) configure -state normal \
1443	-troughcolor white
1444	} else {
1445	$itk_component(${axis}CutScale) configure -state disabled \
1446	-troughcolor grey82
1447	}
1448	foreach dataset [CurrentDatasets -visible] {
1449	SendCmd "$_cutplaneCmd axis $axis $bool $dataset"
1450	}
1451	}
1452	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1453	set axis [string range $what 1 1]
1454	set pos [expr $_settings($what) * 0.01]
1455	foreach dataset [CurrentDatasets -visible] {
1456	SendCmd "$_cutplaneCmd slice ${axis} ${pos} $dataset"
1457	}
1458	set _cutplanePending 0
1459	}
1460	"-xgrid" - "-ygrid" - "-zgrid" {
1461	set axis [string range $what 1 1]
1462	set bool $_settings($what)
1463	SendCmd "axis grid $axis $bool"
1464	}
1465	default {
1466	error "don't know how to fix $what"
1467	}
1468	}
1469	}
1470
1471	#
1472	# RequestLegend --
1473	#
1474	# Request a new legend from the server. The size of the legend
1475	# is determined from the height of the canvas.
1476	#
1477	itcl::body Rappture::VtkVolumeViewer::RequestLegend {} {
1478	set _legendPending 0
1479	set font "Arial 8"
1480	set lineht [font metrics $font -linespace]
1481	set w 12
1482	set h [expr {$_height - 3 * ($lineht + 2)}]
1483	if { $h < 1 } {
1484	return
1485	}
1486	# Set the legend on the first dataset.
1487	foreach dataset [CurrentDatasets -visible $_first] {
1488	foreach {dataobj comp} [split $dataset -] break
1489	if { [info exists _dataset2style($dataset)] } {
1490	#SendCmd "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1491	SendCmd "legend2 $_dataset2style($dataset) $w $h"
1492	break;
1493	}
1494	}
1495	}
1496
1497	#
1498	# ChangeColormap --
1499	#
1500	itcl::body Rappture::VtkVolumeViewer::ChangeColormap {dataobj comp color} {
1501	set tag $dataobj-$comp
1502	if { ![info exist _style($tag)] } {
1503	error "no initial colormap"
1504	}
1505	array set style $_style($tag)
1506	set style(-color) $color
1507	set _style($tag) [array get style]
1508	SetColormap $dataobj $comp
1509	}
1510
1511	#
1512	# SetColormap --
1513	#
1514	itcl::body Rappture::VtkVolumeViewer::SetColormap { dataobj comp } {
1515	array set style {
1516	-color BCGYR
1517	-levels 6
1518	}
1519	set tag $dataobj-$comp
1520	if { ![info exists _initialStyle($tag)] } {
1521	# Save the initial component style.
1522	set _initialStyle($tag) [$dataobj style $comp]
1523	}
1524
1525	# Override defaults with initial style defined in xml.
1526	array set style $_initialStyle($tag)
1527
1528	if { ![info exists _style($tag)] } {
1529	set _style($tag) [array get style]
1530	}
1531	# Override initial style with current style.
1532	array set style $_style($tag)
1533
1534	set name "$style(-color):$style(-levels)"
1535	if { ![info exists _colormaps($name)] } {
1536	BuildColormap $name [array get style]
1537	set _colormaps($name) 1
1538	}
1539	if { ![info exists _dataset2style($tag)] \|\|
1540	$_dataset2style($tag) != $name } {
1541	SendCmd "volume colormap $name $tag"
1542	SendCmd "$_cutplaneCmd colormap $name-opaque $tag"
1543	set _dataset2style($tag) $name
1544	}
1545	}
1546
1547	#
1548	# BuildColormap --
1549	#
1550	# Alpha map is in the format: normalized_value opacity midpoint sharpness
1551	#
1552	itcl::body Rappture::VtkVolumeViewer::BuildColormap { name styles } {
1553	array set style $styles
1554	set cmap [ColorsToColormap $style(-color)]
1555	if { [llength $cmap] == 0 } {
1556	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1557	}
1558
1559	set amap "0.0 0.0 0.5 0.0 1.0 1.0 0.5 0.0"
1560	set opaqueAmap "0.0 1.0 1.0 1.0"
1561	SendCmd [list colormap define $name $cmap -spline $amap]
1562	SendCmd [list colormap define $name-opaque $cmap $opaqueAmap]
1563	}
1564
1565	# ----------------------------------------------------------------------
1566	# CONFIGURATION OPTION: -plotbackground
1567	# ----------------------------------------------------------------------
1568	itcl::configbody Rappture::VtkVolumeViewer::plotbackground {
1569	if { [isconnected] } {
1570	set color $itk_option(-plotbackground)
1571	set rgb [Color2RGB $color]
1572	SendCmd "screen bgcolor $rgb"
1573	$itk_component(legend) configure -background $color
1574	}
1575	}
1576
1577	# ----------------------------------------------------------------------
1578	# CONFIGURATION OPTION: -plotforeground
1579	# ----------------------------------------------------------------------
1580	itcl::configbody Rappture::VtkVolumeViewer::plotforeground {
1581	if { [isconnected] } {
1582	set color $itk_option(-plotforeground)
1583	set rgb [Color2RGB $color]
1584	SendCmd "axis color all $rgb"
1585	SendCmd "outline color $rgb"
1586	SendCmd "$_cutplaneCmd color $rgb"
1587	$itk_component(legend) itemconfigure labels -fill $color
1588	$itk_component(legend) itemconfigure limits -fill $color
1589	}
1590	}
1591
1592	itcl::body Rappture::VtkVolumeViewer::BuildViewTab {} {
1593	set font [option get $itk_component(hull) font Font]
1594
1595	set inner [$itk_component(main) insert end \
1596	-title "View Settings" \
1597	-icon [Rappture::icon wrench]]
1598	$inner configure -borderwidth 4
1599
1600	checkbutton $inner.axes \
1601	-text "Axes" \
1602	-variable [itcl::scope _settings(-axesvisible)] \
1603	-command [itcl::code $this AdjustSetting -axesvisible] \
1604	-font $font
1605
1606	checkbutton $inner.outline \
1607	-text "Outline" \
1608	-variable [itcl::scope _settings(-volumeoutline)] \
1609	-command [itcl::code $this AdjustSetting -volumeoutline] \
1610	-font $font
1611
1612	checkbutton $inner.legend \
1613	-text "Legend" \
1614	-variable [itcl::scope _settings(-legendvisible)] \
1615	-command [itcl::code $this AdjustSetting -legendvisible] \
1616	-font $font
1617
1618	checkbutton $inner.volume \
1619	-text "Volume" \
1620	-variable [itcl::scope _settings(-volumevisible)] \
1621	-command [itcl::code $this AdjustSetting -volumevisible] \
1622	-font $font
1623
1624	label $inner.background_l -text "Background" -font $font
1625	itk_component add background {
1626	Rappture::Combobox $inner.background -width 10 -editable 0
1627	}
1628	$inner.background choices insert end \
1629	"black" "black" \
1630	"white" "white" \
1631	"grey" "grey"
1632
1633	$itk_component(background) value $_settings(-background)
1634	bind $inner.background <<Value>> \
1635	[itcl::code $this AdjustSetting -background]
1636
1637	blt::table $inner \
1638	0,0 $inner.axes -cspan 2 -anchor w \
1639	1,0 $inner.outline -cspan 2 -anchor w \
1640	2,0 $inner.volume -cspan 2 -anchor w \
1641	3,0 $inner.legend -cspan 2 -anchor w \
1642	4,0 $inner.background_l -anchor e -pady 2 \
1643	4,1 $inner.background -fill x
1644
1645	blt::table configure $inner r* -resize none
1646	blt::table configure $inner r5 -resize expand
1647	}
1648
1649	itcl::body Rappture::VtkVolumeViewer::BuildVolumeTab {} {
1650	set font [option get $itk_component(hull) font Font]
1651	#set bfont [option get $itk_component(hull) boldFont Font]
1652	set bfont "Arial 9 bold"
1653
1654	set inner [$itk_component(main) insert end \
1655	-title "Volume Settings" \
1656	-icon [Rappture::icon volume-on]]
1657	$inner configure -borderwidth 4
1658
1659	checkbutton $inner.visibility \
1660	-text "Visible" \
1661	-font $font \
1662	-variable [itcl::scope _settings(-volumevisible)] \
1663	-command [itcl::code $this AdjustSetting -volumevisible]
1664
1665	checkbutton $inner.lighting \
1666	-text "Enable Lighting" \
1667	-font $font \
1668	-variable [itcl::scope _settings(-volumelighting)] \
1669	-command [itcl::code $this AdjustSetting -volumelighting]
1670
1671	label $inner.dim_l -text "Dim" -font $font
1672	::scale $inner.material -from 0 -to 100 -orient horizontal \
1673	-variable [itcl::scope _settings(-volumematerial)] \
1674	-showvalue off \
1675	-command [itcl::code $this AdjustSetting -volumematerial]
1676	label $inner.bright_l -text "Bright" -font $font
1677
1678	label $inner.opacity_l -text "Opacity" -font $font
1679	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1680	-variable [itcl::scope _settings(-volumeopacity)] \
1681	-showvalue off \
1682	-command [itcl::code $this AdjustSetting -volumeopacity]
1683
1684	label $inner.quality_l -text "Quality" -font $font
1685	::scale $inner.quality -from 0 -to 100 -orient horizontal \
1686	-variable [itcl::scope _settings(-volumequality)] \
1687	-showvalue off \
1688	-command [itcl::code $this AdjustSetting -volumequality]
1689
1690	label $inner.field_l -text "Field" -font $font
1691	itk_component add field {
1692	Rappture::Combobox $inner.field -editable 0
1693	}
1694	bind $inner.field <<Value>> \
1695	[itcl::code $this AdjustSetting -field]
1696
1697	label $inner.colormap_l -text "Colormap" -font $font
1698	itk_component add colormap {
1699	Rappture::Combobox $inner.colormap -editable 0
1700	}
1701	$inner.colormap choices insert end [GetColormapList]
1702	bind $inner.colormap <<Value>> \
1703	[itcl::code $this AdjustSetting -color]
1704	$itk_component(colormap) value $_settings(-color)
1705
1706	blt::table $inner \
1707	0,0 $inner.field_l -anchor w -pady 2 \
1708	0,1 $inner.field -fill x -pady 2 -cspan 3 \
1709	1,0 $inner.visibility -anchor w -pady 2 -cspan 4 \
1710	2,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1711	3,0 $inner.dim_l -anchor e -pady 2 \
1712	3,1 $inner.material -fill x -pady 2 -cspan 2 \
1713	3,3 $inner.bright_l -anchor w -pady 2 \
1714	4,0 $inner.opacity_l -anchor w -pady 2 -cspan 4 \
1715	5,0 $inner.opacity -fill x -pady 2 -cspan 4 \
1716	6,0 $inner.quality_l -anchor w -pady 2 -cspan 4 \
1717	7,0 $inner.quality -fill x -pady 2 -cspan 4 \
1718	8,0 $inner.colormap_l -anchor w -pady 2 \
1719	8,1 $inner.colormap -fill x -pady 2 -cspan 3
1720
1721	blt::table configure $inner r* c0 c1 c3 -resize none
1722	blt::table configure $inner r9 c2 -resize expand
1723	}
1724
1725	itcl::body Rappture::VtkVolumeViewer::BuildAxisTab {} {
1726	set font [option get $itk_component(hull) font Font]
1727
1728	set inner [$itk_component(main) insert end \
1729	-title "Axis Settings" \
1730	-icon [Rappture::icon axis2]]
1731	$inner configure -borderwidth 4
1732
1733	checkbutton $inner.visible \
1734	-text "Axes" \
1735	-variable [itcl::scope _settings(-axesvisible)] \
1736	-command [itcl::code $this AdjustSetting -axesvisible] \
1737	-font $font
1738
1739	checkbutton $inner.labels \
1740	-text "Axis Labels" \
1741	-variable [itcl::scope _settings(-axislabels)] \
1742	-command [itcl::code $this AdjustSetting -axislabels] \
1743	-font $font
1744	label $inner.grid_l -text "Grid" -font $font
1745	checkbutton $inner.xgrid \
1746	-text "X" \
1747	-variable [itcl::scope _settings(-xgrid)] \
1748	-command [itcl::code $this AdjustSetting -xgrid] \
1749	-font $font
1750	checkbutton $inner.ygrid \
1751	-text "Y" \
1752	-variable [itcl::scope _settings(-ygrid)] \
1753	-command [itcl::code $this AdjustSetting -ygrid] \
1754	-font $font
1755	checkbutton $inner.zgrid \
1756	-text "Z" \
1757	-variable [itcl::scope _settings(-zgrid)] \
1758	-command [itcl::code $this AdjustSetting -zgrid] \
1759	-font $font
1760	checkbutton $inner.minorticks \
1761	-text "Minor Ticks" \
1762	-variable [itcl::scope _settings(-axisminorticks)] \
1763	-command [itcl::code $this AdjustSetting -axisminorticks] \
1764	-font $font
1765
1766	label $inner.mode_l -text "Mode" -font $font
1767
1768	itk_component add axismode {
1769	Rappture::Combobox $inner.mode -width 10 -editable 0
1770	}
1771	$inner.mode choices insert end \
1772	"static_triad" "static" \
1773	"closest_triad" "closest" \
1774	"furthest_triad" "farthest" \
1775	"outer_edges" "outer"
1776	$itk_component(axismode) value $_settings(-axismode)
1777	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1778
1779	blt::table $inner \
1780	0,0 $inner.visible -anchor w -cspan 4 \
1781	1,0 $inner.labels -anchor w -cspan 4 \
1782	2,0 $inner.minorticks -anchor w -cspan 4 \
1783	4,0 $inner.grid_l -anchor w \
1784	4,1 $inner.xgrid -anchor w \
1785	4,2 $inner.ygrid -anchor w \
1786	4,3 $inner.zgrid -anchor w \
1787	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1788	5,1 $inner.mode -fill x -cspan 3
1789
1790	blt::table configure $inner r* c* -resize none
1791	blt::table configure $inner r7 c6 -resize expand
1792	blt::table configure $inner r3 -height 0.125i
1793	}
1794
1795	itcl::body Rappture::VtkVolumeViewer::BuildCameraTab {} {
1796	set font [option get $itk_component(hull) font Font]
1797	set inner [$itk_component(main) insert end \
1798	-title "Camera Settings" \
1799	-icon [Rappture::icon camera]]
1800	$inner configure -borderwidth 4
1801
1802	label $inner.view_l -text "view" -font $font
1803	set f [frame $inner.view]
1804	foreach side { front back left right top bottom } {
1805	button $f.$side -image [Rappture::icon view$side] \
1806	-command [itcl::code $this SetOrientation $side]
1807	Rappture::Tooltip::for $f.$side "Change the view to $side"
1808	pack $f.$side -side left
1809	}
1810	blt::table $inner \
1811	0,0 $inner.view_l -anchor e -pady 2 \
1812	0,1 $inner.view -anchor w -pady 2
1813	blt::table configure $inner r0 -resize none
1814
1815	set row 1
1816	set labels { qx qy qz qw xpan ypan zoom }
1817	foreach tag $labels {
1818	label $inner.${tag}label -text $tag -font $font
1819	entry $inner.${tag} -font $font -bg white \
1820	-textvariable [itcl::scope _view(-$tag)]
1821	bind $inner.${tag} <Return> \
1822	[itcl::code $this camera set -${tag}]
1823	bind $inner.${tag} <KP_Enter> \
1824	[itcl::code $this camera set -${tag}]
1825	blt::table $inner \
1826	$row,0 $inner.${tag}label -anchor e -pady 2 \
1827	$row,1 $inner.${tag} -anchor w -pady 2
1828	blt::table configure $inner r$row -resize none
1829	incr row
1830	}
1831	checkbutton $inner.ortho \
1832	-text "Orthographic Projection" \
1833	-variable [itcl::scope _view(-ortho)] \
1834	-command [itcl::code $this camera set -ortho] \
1835	-font $font
1836	blt::table $inner \
1837	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1838	blt::table configure $inner r$row -resize none
1839	incr row
1840
1841	blt::table configure $inner c0 c1 -resize none
1842	blt::table configure $inner c2 -resize expand
1843	blt::table configure $inner r$row -resize expand
1844	}
1845
1846	itcl::body Rappture::VtkVolumeViewer::BuildCutplanesTab {} {
1847	set font [option get $itk_component(hull) font Font]
1848
1849	set inner [$itk_component(main) insert end \
1850	-title "Cutplane Settings" \
1851	-icon [Rappture::icon cutbutton]]
1852
1853	$inner configure -borderwidth 4
1854
1855	checkbutton $inner.visible \
1856	-text "Show Cutplanes" \
1857	-variable [itcl::scope _settings(-cutplanesvisible)] \
1858	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1859	-font $font
1860
1861	checkbutton $inner.lighting \
1862	-text "Enable Lighting" \
1863	-variable [itcl::scope _settings(-cutplanelighting)] \
1864	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1865	-font $font
1866
1867	label $inner.opacity_l -text "Opacity" -font $font
1868	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1869	-variable [itcl::scope _settings(-cutplaneopacity)] \
1870	-width 10 \
1871	-showvalue off \
1872	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1873	$inner.opacity set $_settings(-cutplaneopacity)
1874
1875	# X-value slicer...
1876	itk_component add xCutButton {
1877	Rappture::PushButton $inner.xbutton \
1878	-onimage [Rappture::icon x-cutplane] \
1879	-offimage [Rappture::icon x-cutplane] \
1880	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1881	-variable [itcl::scope _settings(-xcutplanevisible)]
1882	}
1883	Rappture::Tooltip::for $itk_component(xCutButton) \
1884	"Toggle the X-axis cutplane on/off"
1885	$itk_component(xCutButton) select
1886
1887	itk_component add xCutScale {
1888	::scale $inner.xval -from 100 -to 0 \
1889	-width 10 -orient vertical -showvalue 1 \
1890	-borderwidth 1 -highlightthickness 0 \
1891	-command [itcl::code $this EventuallySetCutplane x] \
1892	-variable [itcl::scope _settings(-xcutplaneposition)]
1893	} {
1894	usual
1895	ignore -borderwidth -highlightthickness
1896	}
1897	# Set the default cutplane value before disabling the scale.
1898	$itk_component(xCutScale) set 50
1899	$itk_component(xCutScale) configure -state disabled
1900	Rappture::Tooltip::for $itk_component(xCutScale) \
1901	"@[itcl::code $this Slice tooltip x]"
1902
1903	# Y-value slicer...
1904	itk_component add yCutButton {
1905	Rappture::PushButton $inner.ybutton \
1906	-onimage [Rappture::icon y-cutplane] \
1907	-offimage [Rappture::icon y-cutplane] \
1908	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1909	-variable [itcl::scope _settings(-ycutplanevisible)]
1910	}
1911	Rappture::Tooltip::for $itk_component(yCutButton) \
1912	"Toggle the Y-axis cutplane on/off"
1913	$itk_component(yCutButton) select
1914
1915	itk_component add yCutScale {
1916	::scale $inner.yval -from 100 -to 0 \
1917	-width 10 -orient vertical -showvalue 1 \
1918	-borderwidth 1 -highlightthickness 0 \
1919	-command [itcl::code $this EventuallySetCutplane y] \
1920	-variable [itcl::scope _settings(-ycutplaneposition)]
1921	} {
1922	usual
1923	ignore -borderwidth -highlightthickness
1924	}
1925	Rappture::Tooltip::for $itk_component(yCutScale) \
1926	"@[itcl::code $this Slice tooltip y]"
1927	# Set the default cutplane value before disabling the scale.
1928	$itk_component(yCutScale) set 50
1929	$itk_component(yCutScale) configure -state disabled
1930
1931	# Z-value slicer...
1932	itk_component add zCutButton {
1933	Rappture::PushButton $inner.zbutton \
1934	-onimage [Rappture::icon z-cutplane] \
1935	-offimage [Rappture::icon z-cutplane] \
1936	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1937	-variable [itcl::scope _settings(-zcutplanevisible)]
1938	}
1939	Rappture::Tooltip::for $itk_component(zCutButton) \
1940	"Toggle the Z-axis cutplane on/off"
1941	$itk_component(zCutButton) select
1942
1943	itk_component add zCutScale {
1944	::scale $inner.zval -from 100 -to 0 \
1945	-width 10 -orient vertical -showvalue 1 \
1946	-borderwidth 1 -highlightthickness 0 \
1947	-command [itcl::code $this EventuallySetCutplane z] \
1948	-variable [itcl::scope _settings(-zcutplaneposition)]
1949	} {
1950	usual
1951	ignore -borderwidth -highlightthickness
1952	}
1953	$itk_component(zCutScale) set 50
1954	$itk_component(zCutScale) configure -state disabled
1955	Rappture::Tooltip::for $itk_component(zCutScale) \
1956	"@[itcl::code $this Slice tooltip z]"
1957
1958	blt::table $inner \
1959	0,0 $inner.visible -anchor w -pady 2 -cspan 4 \
1960	1,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1961	2,0 $inner.opacity_l -anchor w -pady 2 -cspan 3 \
1962	3,0 $inner.opacity -fill x -pady 2 -cspan 3 \
1963	4,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
1964	5,0 $itk_component(xCutScale) -fill y \
1965	4,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
1966	5,1 $itk_component(yCutScale) -fill y \
1967	4,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
1968	5,2 $itk_component(zCutScale) -fill y
1969
1970	blt::table configure $inner r* c* -resize none
1971	blt::table configure $inner r5 c3 -resize expand
1972	}
1973
1974	#
1975	# camera --
1976	#
1977	itcl::body Rappture::VtkVolumeViewer::camera {option args} {
1978	switch -- $option {
1979	"show" {
1980	puts [array get _view]
1981	}
1982	"set" {
1983	set what [lindex $args 0]
1984	set x $_view($what)
1985	set code [catch { string is double $x } result]
1986	if { $code != 0 \|\| !$result } {
1987	return
1988	}
1989	switch -- $what {
1990	"-ortho" {
1991	if {$_view($what)} {
1992	SendCmd "camera mode ortho"
1993	} else {
1994	SendCmd "camera mode persp"
1995	}
1996	}
1997	"-xpan" - "-ypan" {
1998	PanCamera
1999	}
2000	"-qx" - "-qy" - "-qz" - "-qw" {
2001	set q [ViewToQuaternion]
2002	$_arcball quaternion $q
2003	EventuallyRotate $q
2004	}
2005	"-zoom" {
2006	SendCmd "camera zoom $_view($what)"
2007	}
2008	}
2009	}
2010	}
2011	}
2012
2013	itcl::body Rappture::VtkVolumeViewer::GetVtkData { args } {
2014	set bytes ""
2015	foreach dataobj [get] {
2016	foreach comp [$dataobj components] {
2017	set tag $dataobj-$comp
2018	set contents [$dataobj vtkdata $comp]
2019	append bytes "$contents\n"
2020	}
2021	}
2022	return [list .vtk $bytes]
2023	}
2024
2025	itcl::body Rappture::VtkVolumeViewer::GetImage { args } {
2026	if { [image width $_image(download)] > 0 &&
2027	[image height $_image(download)] > 0 } {
2028	set bytes [$_image(download) data -format "jpeg -quality 100"]
2029	set bytes [Rappture::encoding::decode -as b64 $bytes]
2030	return [list .jpg $bytes]
2031	}
2032	return ""
2033	}
2034
2035	itcl::body Rappture::VtkVolumeViewer::BuildDownloadPopup { popup command } {
2036	Rappture::Balloon $popup \
2037	-title "[Rappture::filexfer::label downloadWord] as..."
2038	set inner [$popup component inner]
2039	label $inner.summary -text "" -anchor w
2040	radiobutton $inner.vtk_button -text "VTK data file" \
2041	-variable [itcl::scope _downloadPopup(format)] \
2042	-font "Arial 9" \
2043	-value vtk
2044	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2045	radiobutton $inner.image_button -text "Image File" \
2046	-variable [itcl::scope _downloadPopup(format)] \
2047	-value image
2048	Rappture::Tooltip::for $inner.image_button \
2049	"Save as digital image."
2050
2051	button $inner.ok -text "Save" \
2052	-highlightthickness 0 -pady 2 -padx 3 \
2053	-command $command \
2054	-compound left \
2055	-image [Rappture::icon download]
2056
2057	button $inner.cancel -text "Cancel" \
2058	-highlightthickness 0 -pady 2 -padx 3 \
2059	-command [list $popup deactivate] \
2060	-compound left \
2061	-image [Rappture::icon cancel]
2062
2063	blt::table $inner \
2064	0,0 $inner.summary -cspan 2 \
2065	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2066	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2067	4,1 $inner.cancel -width .9i -fill y \
2068	4,0 $inner.ok -padx 2 -width .9i -fill y
2069	blt::table configure $inner r3 -height 4
2070	blt::table configure $inner r4 -pady 4
2071	raise $inner.image_button
2072	$inner.vtk_button invoke
2073	return $inner
2074	}
2075
2076	itcl::body Rappture::VtkVolumeViewer::SetObjectStyle { dataobj cname } {
2077	# Parse style string.
2078	set tag $dataobj-$cname
2079	array set style {
2080	-color BCGYR
2081	-lighting 1
2082	-opacity 0.5
2083	-outline 0
2084	-visible 1
2085	}
2086	array set style [$dataobj style $cname]
2087	set _settings(-volumelighting) $style(-lighting)
2088	set _settings(-volumeopacity) [expr $style(-opacity) * 100.0]
2089	set _settings(-volumeoutline) $style(-outline)
2090	set _settings(-volumevisible) $style(-visible)
2091
2092	$itk_component(colormap) value $style(-color)
2093
2094	SendCmd "outline add $tag"
2095	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2096	SendCmd "outline visible $style(-outline) $tag"
2097
2098	SendCmd "$_cutplaneCmd add $tag"
2099	SendCmd "$_cutplaneCmd color [Color2RGB $itk_option(-plotforeground)] $tag"
2100	SendCmd "$_cutplaneCmd visible 0 $tag"
2101
2102	SendCmd "volume add $tag"
2103	SendCmd "volume lighting $style(-lighting) $tag"
2104	SendCmd "volume opacity $style(-opacity) $tag"
2105	SendCmd "volume visible $style(-visible) $tag"
2106	SetColormap $dataobj $cname
2107	}
2108
2109	itcl::body Rappture::VtkVolumeViewer::IsValidObject { dataobj } {
2110	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2111	return 0
2112	}
2113	return 1
2114	}
2115
2116	# ----------------------------------------------------------------------
2117	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2118	#
2119	# Invoked automatically whenever the "legend" command comes in from
2120	# the rendering server. Indicates that binary image data with the
2121	# specified <size> will follow.
2122	# ----------------------------------------------------------------------
2123	itcl::body Rappture::VtkVolumeViewer::ReceiveLegend { colormap title min max size } {
2124	if { [isconnected] } {
2125	set bytes [ReceiveBytes $size]
2126	if { ![info exists _image(legend)] } {
2127	set _image(legend) [image create photo]
2128	}
2129	$_image(legend) configure -data $bytes
2130	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2131	if { [catch {DrawLegend} errs] != 0 } {
2132	puts stderr errs=$errs
2133	}
2134	}
2135	}
2136
2137	#
2138	# DrawLegend --
2139	#
2140	itcl::body Rappture::VtkVolumeViewer::DrawLegend {} {
2141	set fname $_curFldName
2142	set c $itk_component(view)
2143	set w [winfo width $c]
2144	set h [winfo height $c]
2145	set font "Arial 8"
2146	set lineht [font metrics $font -linespace]
2147
2148	if { !$_settings(-legendvisible) } {
2149	$c delete legend
2150	return
2151	}
2152
2153	if { [info exists _fields($fname)] } {
2154	foreach { title units } $_fields($fname) break
2155	if { $units != "" } {
2156	set title [format "%s (%s)" $title $units]
2157	}
2158	} else {
2159	set title $fname
2160	}
2161
2162	set x [expr $w - 2]
2163	if { [$c find withtag "legend"] == "" } {
2164	set y 2
2165	$c create text $x $y \
2166	-anchor ne \
2167	-fill $itk_option(-plotforeground) -tags "title legend" \
2168	-font $font
2169	incr y $lineht
2170	$c create text $x $y \
2171	-anchor ne \
2172	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2173	-font $font
2174	incr y $lineht
2175	$c create image $x $y \
2176	-anchor ne \
2177	-image $_image(legend) -tags "colormap legend"
2178	$c create text $x [expr {$h-2}] \
2179	-anchor se \
2180	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2181	-font $font
2182	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2183	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2184	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2185	}
2186	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2187	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2188	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2189	# Reset the item coordinates according the current size of the plot.
2190	$c itemconfigure title -text $title
2191	if { [info exists _limits($_curFldName)] } {
2192	foreach { vmin vmax } $_limits($_curFldName) break
2193	$c itemconfigure vmin -text [format %g $vmin]
2194	$c itemconfigure vmax -text [format %g $vmax]
2195	}
2196	set y 2
2197	$c coords title $x $y
2198	incr y $lineht
2199	$c coords vmax $x $y
2200	incr y $lineht
2201	$c coords colormap $x $y
2202	$c coords vmin $x [expr {$h - 2}]
2203	}
2204
2205	#
2206	# EnterLegend --
2207	#
2208	itcl::body Rappture::VtkVolumeViewer::EnterLegend { x y } {
2209	SetLegendTip $x $y
2210	}
2211
2212	#
2213	# MotionLegend --
2214	#
2215	itcl::body Rappture::VtkVolumeViewer::MotionLegend { x y } {
2216	Rappture::Tooltip::tooltip cancel
2217	set c $itk_component(view)
2218	SetLegendTip $x $y
2219	}
2220
2221	#
2222	# LeaveLegend --
2223	#
2224	itcl::body Rappture::VtkVolumeViewer::LeaveLegend { } {
2225	Rappture::Tooltip::tooltip cancel
2226	.rappturetooltip configure -icon ""
2227	}
2228
2229	#
2230	# SetLegendTip --
2231	#
2232	itcl::body Rappture::VtkVolumeViewer::SetLegendTip { x y } {
2233	set c $itk_component(view)
2234	set w [winfo width $c]
2235	set h [winfo height $c]
2236	set font "Arial 8"
2237	set lineht [font metrics $font -linespace]
2238
2239	set imgHeight [image height $_image(legend)]
2240	set coords [$c coords colormap]
2241	set imgX [expr $w - [image width $_image(legend)] - 2]
2242	set imgY [expr $y - 2 * ($lineht + 2)]
2243
2244	if { [info exists _fields($_title)] } {
2245	foreach { title units } $_fields($_title) break
2246	if { $units != "" } {
2247	set title [format "%s (%s)" $title $units]
2248	}
2249	} else {
2250	set title $_title
2251	}
2252	# Make a swatch of the selected color
2253	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2254	#puts stderr "out of range: $imgY"
2255	return
2256	}
2257	if { ![info exists _image(swatch)] } {
2258	set _image(swatch) [image create photo -width 24 -height 24]
2259	}
2260	set color [eval format "\#%02x%02x%02x" $pixel]
2261	$_image(swatch) put black -to 0 0 23 23
2262	$_image(swatch) put $color -to 1 1 22 22
2263	.rappturetooltip configure -icon $_image(swatch)
2264
2265	# Compute the value of the point
2266	if { [info exists _limits($_curFldName)] } {
2267	foreach { vmin vmax } $_limits($_curFldName) break
2268	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2269	set value [expr $t * ($vmax - $vmin) + $vmin]
2270	} else {
2271	set value 0.0
2272	}
2273	set tipx [expr $x + 15]
2274	set tipy [expr $y - 5]
2275	Rappture::Tooltip::text $c "$title $value"
2276	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2277	}
2278
2279	# ----------------------------------------------------------------------
2280	# USAGE: Slice move x\|y\|z <newval>
2281	#
2282	# Called automatically when the user drags the slider to move the
2283	# cut plane that slices 3D data. Gets the current value from the
2284	# slider and moves the cut plane to the appropriate point in the
2285	# data set.
2286	# ----------------------------------------------------------------------
2287	itcl::body Rappture::VtkVolumeViewer::Slice {option args} {
2288	switch -- $option {
2289	"move" {
2290	set axis [lindex $args 0]
2291	set newval [lindex $args 1]
2292	if {[llength $args] != 2} {
2293	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2294	}
2295	set newpos [expr {0.01*$newval}]
2296	SendCmd "$_cutplaneCmd slice $axis $newpos"
2297	}
2298	"tooltip" {
2299	set axis [lindex $args 0]
2300	set val [$itk_component(${axis}CutScale) get]
2301	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2302	}
2303	default {
2304	error "bad option \"$option\": should be axis, move, or tooltip"
2305	}
2306	}
2307	}
2308
2309	# ----------------------------------------------------------------------
2310	# USAGE: LegendTitleAction post
2311	# USAGE: LegendTitleAction enter
2312	# USAGE: LegendTitleAction leave
2313	# USAGE: LegendTitleAction save
2314	#
2315	# Used internally to handle the dropdown list for the fields menu combobox.
2316	# The post option is invoked when the field title is pressed to launch the
2317	# dropdown. The enter option is invoked when the user mouses over the field
2318	# title. The leave option is invoked when the user moves the mouse away
2319	# from the field title. The save option is invoked whenever there is a
2320	# selection from the list, to alert the visualization server.
2321	# ----------------------------------------------------------------------
2322	itcl::body Rappture::VtkVolumeViewer::LegendTitleAction {option} {
2323	set c $itk_component(view)
2324	switch -- $option {
2325	post {
2326	foreach { x1 y1 x2 y2 } [$c bbox title] break
2327	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2328	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2329	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2330	tk_popup $itk_component(fieldmenu) $x $y
2331	}
2332	enter {
2333	$c itemconfigure title -fill red
2334	}
2335	leave {
2336	$c itemconfigure title -fill $itk_option(-plotforeground)
2337	}
2338	save {
2339	$itk_component(field) value $_curFldLabel
2340	AdjustSetting -field
2341	}
2342	default {
2343	error "bad option \"$option\": should be post, enter, leave or save"
2344	}
2345	}
2346	}
2347
2348	itcl::body Rappture::VtkVolumeViewer::SetOrientation { side } {
2349	array set positions {
2350	front "1 0 0 0"
2351	back "0 0 1 0"
2352	left "0.707107 0 -0.707107 0"
2353	right "0.707107 0 0.707107 0"
2354	top "0.707107 -0.707107 0 0"
2355	bottom "0.707107 0.707107 0 0"
2356	}
2357	foreach name { -qw -qx -qy -qz } value $positions($side) {
2358	set _view($name) $value
2359	}
2360	set q [ViewToQuaternion]
2361	$_arcball quaternion $q
2362	SendCmd "camera orient $q"
2363	SendCmd "camera reset"
2364	set _view(-xpan) 0
2365	set _view(-ypan) 0
2366	set _view(-zoom) 1.0
2367	}
2368
2369	#
2370	# GetDatasetsWithComponent --
2371	#
2372	# Returns a list of all the datasets (known by the combination of
2373	# their data object and component name) that match the given
2374	# component name. For example, this is used where we want to change
2375	# the settings of volumes that have the current component.
2376	#
2377	itcl::body Rappture::VtkVolumeViewer::GetDatasetsWithComponent { cname } {
2378	if { ![info exists _volcomponents($cname)] } {
2379	return ""
2380	}
2381	return $_volcomponents($cname)
2382	}
2383
2384	itcl::body Rappture::VtkVolumeViewer::SetCurrentFieldName { dataobj } {
2385	set _first $dataobj
2386	$itk_component(field) choices delete 0 end
2387	$itk_component(fieldmenu) delete 0 end
2388	array unset _fields
2389	set _curFldName ""
2390	foreach cname [$_first components] {
2391	foreach fname [$_first fieldnames $cname] {
2392	if { [info exists _fields($fname)] } {
2393	continue
2394	}
2395	foreach { label units components } \
2396	[$_first fieldinfo $fname] break
2397	# Only scalar fields are valid
2398	if {$_allowMultiComponent \|\| $components == 1} {
2399	$itk_component(field) choices insert end "$fname" "$label"
2400	$itk_component(fieldmenu) add radiobutton -label "$label" \
2401	-value $label -variable [itcl::scope _curFldLabel] \
2402	-selectcolor red \
2403	-activebackground $itk_option(-plotbackground) \
2404	-activeforeground $itk_option(-plotforeground) \
2405	-font "Arial 8" \
2406	-command [itcl::code $this LegendTitleAction save]
2407	set _fields($fname) [list $label $units $components]
2408	if { $_curFldName == "" } {
2409	set _curFldName $fname
2410	set _curFldLabel $label
2411	}
2412	}
2413	}
2414	}
2415	$itk_component(field) value $_curFldLabel
2416	}

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