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source: branches/1.4/gui/scripts/vtkvolumeviewer.tcl @ 5733

Last change on this file since 5733 was 5733, checked in by ldelgass, 9 years ago
Merge in vtkvolume viewer updates from trunk
File size: 82.8 KB

Line
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) 2004-2015 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 { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
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 Combo { option }
76	private method Connect {}
77	private method CurrentDatasets {args}
78	private method Disconnect {}
79	private method DoResize {}
80	private method DoRotate {}
81	private method DrawLegend {}
82	private method EnterLegend { x y }
83	private method EventuallyResize { w h }
84	private method EventuallyRequestLegend {}
85	private method EventuallyRotate { q }
86	private method EventuallySetCutplane { axis args }
87	private method GetDatasetsWithComponent { cname }
88	private method GetImage { args }
89	private method GetVtkData { args }
90	private method InitSettings { args }
91	private method IsValidObject { dataobj }
92	private method LeaveLegend {}
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 vmin vmax size }
104	private method RequestLegend {}
105	private method Rotate {option x y}
106	private method SetColormap { dataobj comp }
107	private method SetLegendTip { x y }
108	private method SetObjectStyle { dataobj cname }
109	private method SetOrientation { side }
110	private method Slice {option args}
111	private method ViewToQuaternion {} {
112	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
113	}
114	private method Zoom {option}
115
116	private variable _arcball ""
117	private variable _dlist ""; # list of data objects
118	private variable _obj2ovride; # maps dataobj => style override
119	private variable _datasets; # contains all the dataobj-component
120	# datasets in the server
121	private variable _colormaps; # contains all the colormaps
122	# in the server.
123	private variable _dataset2style; # maps dataobj-component to transfunc
124
125	private variable _reset 1; # Connection to server has been reset.
126	private variable _click; # Info used for rotate operations.
127	private variable _limits; # Autoscale min/max for all axes
128	private variable _view; # View params for 3D view
129	private variable _settings
130	private variable _style; # Array of current component styles.
131	private variable _initialStyle; # Array of initial component styles.
132
133	private variable _start 0
134	private variable _title ""
135	private variable _fields
136	private variable _curFldName ""
137	private variable _curFldLabel ""
138	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
139	private variable _cutplaneCmd "imgcutplane"
140	private variable _allowMultiComponent 0
141
142	private variable _first ""; # This is the topmost dataset.
143	private variable _volcomponents; # Maps component name to list of
144	# dataobj-component tags
145	private variable _componentsList; # List of components found
146
147	private variable _width 0
148	private variable _height 0
149	private variable _resizePending 0
150	private variable _legendPending 0
151	private variable _rotatePending 0
152	private variable _cutplanePending 0
153
154	private common _downloadPopup; # download options from popup
155	private common _hardcopy
156	}
157
158	itk::usual VtkVolumeViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::VtkVolumeViewer::constructor {hostlist args} {
167	set _serverType "vtkvis"
168
169	#DebugOn
170	EnableWaitDialog 900
171
172	# Rebuild event
173	$_dispatcher register !rebuild
174	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
175
176	# Resize event
177	$_dispatcher register !resize
178	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
179
180	# Legend event
181	$_dispatcher register !legend
182	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
183
184	# Rotate event
185	$_dispatcher register !rotate
186	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
187
188	# X-Cutplane event
189	$_dispatcher register !xcutplane
190	$_dispatcher dispatch $this !xcutplane \
191	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
192
193	# Y-Cutplane event
194	$_dispatcher register !ycutplane
195	$_dispatcher dispatch $this !ycutplane \
196	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
197
198	# Z-Cutplane event
199	$_dispatcher register !zcutplane
200	$_dispatcher dispatch $this !zcutplane \
201	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
202
203	#
204	# Populate parser with commands handle incoming requests
205	#
206	$_parser alias image [itcl::code $this ReceiveImage]
207	$_parser alias legend [itcl::code $this ReceiveLegend]
208	$_parser alias dataset [itcl::code $this ReceiveDataset]
209
210	# Initialize the view to some default parameters.
211	array set _view {
212	-ortho 0
213	-qw 0.853553
214	-qx -0.353553
215	-qy 0.353553
216	-qz 0.146447
217	-xpan 0
218	-ypan 0
219	-zoom 1.0
220	}
221	set _arcball [blt::arcball create 100 100]
222	$_arcball quaternion [ViewToQuaternion]
223
224	array set _settings {
225	-axesvisible 1
226	-axisflymode static
227	-axislabels 1
228	-axisminorticks 1
229	-background black
230	-color BCGYR
231	-cutplanelighting 1
232	-cutplaneopacity 100
233	-cutplanesvisible 0
234	-legendvisible 1
235	-volumelighting 1
236	-volumematerial 80
237	-volumeopacity 50
238	-volumeoutline 0
239	-volumequality 80
240	-volumevisible 1
241	-xcutplaneposition 50
242	-xcutplanevisible 1
243	-xgrid 0
244	-ycutplaneposition 50
245	-ycutplanevisible 1
246	-ygrid 0
247	-zcutplaneposition 50
248	-zcutplanevisible 1
249	-zgrid 0
250	}
251
252	itk_component add view {
253	canvas $itk_component(plotarea).view \
254	-highlightthickness 0 -borderwidth 0
255	} {
256	usual
257	ignore -highlightthickness -borderwidth -background
258	}
259
260	itk_component add fieldmenu {
261	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
262	-tearoff no
263	} {
264	usual
265	ignore -background -foreground -relief -tearoff
266	}
267	set c $itk_component(view)
268	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
269	bind $c <4> [itcl::code $this Zoom in 0.25]
270	bind $c <5> [itcl::code $this Zoom out 0.25]
271	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
272	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
273	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
274	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
275	bind $c <Enter> "focus %W"
276	bind $c <Control-F1> [itcl::code $this ToggleConsole]
277
278	# Fixes the scrollregion in case we go off screen
279	$c configure -scrollregion [$c bbox all]
280
281	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
282	set _map(cwidth) -1
283	set _map(cheight) -1
284	set _map(zoom) 1.0
285	set _map(original) ""
286
287	set f [$itk_component(main) component controls]
288	itk_component add reset {
289	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
290	-highlightthickness 0 \
291	-image [Rappture::icon reset-view] \
292	-command [itcl::code $this Zoom reset]
293	} {
294	usual
295	ignore -highlightthickness
296	}
297	pack $itk_component(reset) -side top -padx 2 -pady 2
298	Rappture::Tooltip::for $itk_component(reset) \
299	"Reset the view to the default zoom level"
300
301	itk_component add zoomin {
302	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
303	-highlightthickness 0 \
304	-image [Rappture::icon zoom-in] \
305	-command [itcl::code $this Zoom in]
306	} {
307	usual
308	ignore -highlightthickness
309	}
310	pack $itk_component(zoomin) -side top -padx 2 -pady 2
311	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
312
313	itk_component add zoomout {
314	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
315	-highlightthickness 0 \
316	-image [Rappture::icon zoom-out] \
317	-command [itcl::code $this Zoom out]
318	} {
319	usual
320	ignore -highlightthickness
321	}
322	pack $itk_component(zoomout) -side top -padx 2 -pady 2
323	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
324
325	itk_component add volume {
326	Rappture::PushButton $f.volume \
327	-onimage [Rappture::icon volume-on] \
328	-offimage [Rappture::icon volume-off] \
329	-variable [itcl::scope _settings(-volumevisible)] \
330	-command [itcl::code $this AdjustSetting -volumevisible]
331	}
332	$itk_component(volume) select
333	Rappture::Tooltip::for $itk_component(volume) \
334	"Don't display the volume"
335	pack $itk_component(volume) -padx 2 -pady 2
336
337	itk_component add cutplane {
338	Rappture::PushButton $f.cutplane \
339	-onimage [Rappture::icon cutbutton] \
340	-offimage [Rappture::icon cutbutton] \
341	-variable [itcl::scope _settings(-cutplanesvisible)] \
342	-command [itcl::code $this AdjustSetting -cutplanesvisible]
343	}
344	Rappture::Tooltip::for $itk_component(cutplane) \
345	"Show/Hide cutplanes"
346	pack $itk_component(cutplane) -padx 2 -pady 2
347
348	if { [catch {
349	BuildViewTab
350	BuildVolumeTab
351	BuildCutplanesTab
352	BuildAxisTab
353	BuildCameraTab
354	} errs] != 0 } {
355	puts stderr errs=$errs
356	}
357
358	# Legend
359	set _image(legend) [image create photo]
360	itk_component add legend {
361	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
362	} {
363	usual
364	ignore -highlightthickness
365	rename -background -plotbackground plotBackground Background
366	}
367
368	# Hack around the Tk panewindow. The problem is that the requested
369	# size of the 3d view isn't set until an image is retrieved from
370	# the server. So the panewindow uses the tiny size.
371	set w 10000
372	pack forget $itk_component(view)
373	blt::table $itk_component(plotarea) \
374	0,0 $itk_component(view) -fill both -reqwidth $w
375	blt::table configure $itk_component(plotarea) c1 -resize none
376
377	# Bindings for rotation via mouse
378	bind $itk_component(view) <ButtonPress-1> \
379	[itcl::code $this Rotate click %x %y]
380	bind $itk_component(view) <B1-Motion> \
381	[itcl::code $this Rotate drag %x %y]
382	bind $itk_component(view) <ButtonRelease-1> \
383	[itcl::code $this Rotate release %x %y]
384
385	# Bindings for panning via mouse
386	bind $itk_component(view) <ButtonPress-2> \
387	[itcl::code $this Pan click %x %y]
388	bind $itk_component(view) <B2-Motion> \
389	[itcl::code $this Pan drag %x %y]
390	bind $itk_component(view) <ButtonRelease-2> \
391	[itcl::code $this Pan release %x %y]
392
393	#bind $itk_component(view) <ButtonRelease-3> \
394	# [itcl::code $this Pick %x %y]
395
396	# Bindings for panning via keyboard
397	bind $itk_component(view) <KeyPress-Left> \
398	[itcl::code $this Pan set -10 0]
399	bind $itk_component(view) <KeyPress-Right> \
400	[itcl::code $this Pan set 10 0]
401	bind $itk_component(view) <KeyPress-Up> \
402	[itcl::code $this Pan set 0 -10]
403	bind $itk_component(view) <KeyPress-Down> \
404	[itcl::code $this Pan set 0 10]
405	bind $itk_component(view) <Shift-KeyPress-Left> \
406	[itcl::code $this Pan set -2 0]
407	bind $itk_component(view) <Shift-KeyPress-Right> \
408	[itcl::code $this Pan set 2 0]
409	bind $itk_component(view) <Shift-KeyPress-Up> \
410	[itcl::code $this Pan set 0 -2]
411	bind $itk_component(view) <Shift-KeyPress-Down> \
412	[itcl::code $this Pan set 0 2]
413
414	# Bindings for zoom via keyboard
415	bind $itk_component(view) <KeyPress-Prior> \
416	[itcl::code $this Zoom out]
417	bind $itk_component(view) <KeyPress-Next> \
418	[itcl::code $this Zoom in]
419
420	bind $itk_component(view) <Enter> "focus $itk_component(view)"
421
422	if {[string equal "x11" [tk windowingsystem]]} {
423	# Bindings for zoom via mouse
424	bind $itk_component(view) <4> [itcl::code $this Zoom out]
425	bind $itk_component(view) <5> [itcl::code $this Zoom in]
426	}
427
428	set _image(download) [image create photo]
429
430	eval itk_initialize $args
431	Connect
432	}
433
434	# ----------------------------------------------------------------------
435	# DESTRUCTOR
436	# ----------------------------------------------------------------------
437	itcl::body Rappture::VtkVolumeViewer::destructor {} {
438	Disconnect
439	image delete $_image(plot)
440	image delete $_image(download)
441	catch { blt::arcball destroy $_arcball }
442	}
443
444	itcl::body Rappture::VtkVolumeViewer::DoResize {} {
445	if { $_width < 2 } {
446	set _width 500
447	}
448	if { $_height < 2 } {
449	set _height 500
450	}
451	set _start [clock clicks -milliseconds]
452	SendCmd "screen size $_width $_height"
453
454	EventuallyRequestLegend
455	set _resizePending 0
456	}
457
458	itcl::body Rappture::VtkVolumeViewer::DoRotate {} {
459	SendCmd "camera orient [ViewToQuaternion]"
460	set _rotatePending 0
461	}
462
463	itcl::body Rappture::VtkVolumeViewer::EventuallyResize { w h } {
464	set _width $w
465	set _height $h
466	$_arcball resize $w $h
467	if { !$_resizePending } {
468	set _resizePending 1
469	$_dispatcher event -after 400 !resize
470	}
471	}
472
473	itcl::body Rappture::VtkVolumeViewer::EventuallyRequestLegend {} {
474	if { !$_legendPending } {
475	set _legendPending 1
476	$_dispatcher event -idle !legend
477	}
478	}
479
480	set rotate_delay 100
481
482	itcl::body Rappture::VtkVolumeViewer::EventuallyRotate { q } {
483	QuaternionToView $q
484	if { !$_rotatePending } {
485	set _rotatePending 1
486	global rotate_delay
487	$_dispatcher event -after $rotate_delay !rotate
488	}
489	}
490
491	itcl::body Rappture::VtkVolumeViewer::EventuallySetCutplane { axis args } {
492	if { !$_cutplanePending } {
493	set _cutplanePending 1
494	$_dispatcher event -after 100 !${axis}cutplane
495	}
496	}
497
498	# ----------------------------------------------------------------------
499	# USAGE: add <dataobj> ?<settings>?
500	#
501	# Clients use this to add a data object to the plot. The optional
502	# <settings> are used to configure the plot. Allowed settings are
503	# -color, -brightness, -width, -linestyle, and -raise.
504	# ----------------------------------------------------------------------
505	itcl::body Rappture::VtkVolumeViewer::add {dataobj {settings ""}} {
506	DebugTrace "Enter"
507	if { ![IsValidObject $dataobj] } {
508	DebugTrace "Invalid"
509	return; # Ignore invalid objects.
510	}
511	array set params {
512	-color auto
513	-width 1
514	-linestyle solid
515	-brightness 0
516	-raise 0
517	-description ""
518	-param ""
519	-type ""
520	}
521	array set params $settings
522	set params(-description) ""
523	set params(-param) ""
524	array set params $settings
525
526	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
527	# can't handle -autocolors yet
528	set params(-color) black
529	}
530	set pos [lsearch -exact $_dlist $dataobj]
531	if {$pos < 0} {
532	lappend _dlist $dataobj
533	}
534	set _obj2ovride($dataobj-color) $params(-color)
535	set _obj2ovride($dataobj-width) $params(-width)
536	set _obj2ovride($dataobj-raise) $params(-raise)
537	$_dispatcher event -idle !rebuild
538	}
539
540
541	# ----------------------------------------------------------------------
542	# USAGE: delete ?<dataobj1> <dataobj2> ...?
543	#
544	# Clients use this to delete a dataobj from the plot. If no dataobjs
545	# are specified, then all dataobjs are deleted. No data objects are
546	# deleted. They are only removed from the display list.
547	# ----------------------------------------------------------------------
548	itcl::body Rappture::VtkVolumeViewer::delete {args} {
549	DebugTrace "Enter"
550	if { [llength $args] == 0} {
551	set args $_dlist
552	}
553	# Delete all specified dataobjs
554	set changed 0
555	foreach dataobj $args {
556	set pos [lsearch -exact $_dlist $dataobj]
557	if { $pos < 0 } {
558	continue; # Don't know anything about it.
559	}
560	# Remove it from the dataobj list.
561	set _dlist [lreplace $_dlist $pos $pos]
562	array unset _obj2ovride $dataobj-*
563	array unset _settings $dataobj-*
564	set changed 1
565	}
566	# If anything changed, then rebuild the plot
567	if { $changed } {
568	$_dispatcher event -idle !rebuild
569	}
570	}
571
572	# ----------------------------------------------------------------------
573	# USAGE: get ?-objects?
574	# USAGE: get ?-visible?
575	# USAGE: get ?-image view?
576	#
577	# Clients use this to query the list of objects being plotted, in
578	# order from bottom to top of this result. The optional "-image"
579	# flag can also request the internal images being shown.
580	# ----------------------------------------------------------------------
581	itcl::body Rappture::VtkVolumeViewer::get {args} {
582	if {[llength $args] == 0} {
583	set args "-objects"
584	}
585
586	set op [lindex $args 0]
587	switch -- $op {
588	"-objects" {
589	# put the dataobj list in order according to -raise options
590	set dlist {}
591	foreach dataobj $_dlist {
592	if { ![IsValidObject $dataobj] } {
593	continue
594	}
595	if {[info exists _obj2ovride($dataobj-raise)] &&
596	$_obj2ovride($dataobj-raise)} {
597	set dlist [linsert $dlist 0 $dataobj]
598	} else {
599	lappend dlist $dataobj
600	}
601	}
602	return $dlist
603	}
604	"-visible" {
605	set dlist {}
606	foreach dataobj $_dlist {
607	if { ![IsValidObject $dataobj] } {
608	continue
609	}
610	if { ![info exists _obj2ovride($dataobj-raise)] } {
611	# No setting indicates that the object isn't visible.
612	continue
613	}
614	# Otherwise use the -raise parameter to put the object to
615	# the front of the list.
616	if { $_obj2ovride($dataobj-raise) } {
617	set dlist [linsert $dlist 0 $dataobj]
618	} else {
619	lappend dlist $dataobj
620	}
621	}
622	return $dlist
623	}
624	-image {
625	if {[llength $args] != 2} {
626	error "wrong # args: should be \"get -image view\""
627	}
628	switch -- [lindex $args end] {
629	view {
630	return $_image(plot)
631	}
632	default {
633	error "bad image name \"[lindex $args end]\": should be view"
634	}
635	}
636	}
637	default {
638	error "bad option \"$op\": should be -objects or -image"
639	}
640	}
641	}
642
643	# ----------------------------------------------------------------------
644	# USAGE: scale ?<data1> <data2> ...?
645	#
646	# Sets the default limits for the overall plot according to the
647	# limits of the data for all of the given <data> objects. This
648	# accounts for all objects--even those not showing on the screen.
649	# Because of this, the limits are appropriate for all objects as
650	# the user scans through data in the ResultSet viewer.
651	# ----------------------------------------------------------------------
652	itcl::body Rappture::VtkVolumeViewer::scale {args} {
653	DebugTrace "Enter"
654	array unset _limits
655	array unset _volcomponents
656	set _componentsList ""
657
658	foreach dataobj $args {
659	if { ![$dataobj isvalid] } {
660	continue; # Object doesn't contain valid data.
661	}
662	# Determine limits for each axis.
663	foreach axis { x y z } {
664	set lim [$dataobj limits $axis]
665	if { ![info exists _limits($axis)] } {
666	set _limits($axis) $lim
667	continue
668	}
669	foreach {min max} $lim break
670	foreach {amin amax} $_limits($axis) break
671	if { $amin > $min } {
672	set amin $min
673	}
674	if { $amax < $max } {
675	set amax $max
676	}
677	set _limits($axis) [list $amin $amax]
678	}
679	# Determine limits for each field.
680	foreach { fname lim } [$dataobj fieldlimits] {
681	if { ![info exists _limits($fname)] } {
682	set _limits($fname) $lim
683	continue
684	}
685	foreach {min max} $lim break
686	foreach {fmin fmax} $_limits($fname) break
687	if { $fmin > $min } {
688	set fmin $min
689	}
690	if { $fmax < $max } {
691	set fmax $max
692	}
693	set _limits($fname) [list $fmin $fmax]
694	}
695	# Get limits for each component.
696	foreach cname [$dataobj components] {
697	if { ![info exists _volcomponents($cname)] } {
698	lappend _componentsList $cname
699	}
700	lappend _volcomponents($cname) $dataobj-$cname
701	array unset limits
702	array set limits [$dataobj valueLimits $cname]
703	if { ![info exists _limits($cname)] } {
704	set _limits($cname) $limits(v)
705	continue
706	}
707	foreach {min max} $limits(v) break
708	foreach {vmin vmax} $_limits($cname) break
709	if { $vmin > $min } {
710	set vmin $min
711	}
712	if { $vmax < $max } {
713	set vmax $max
714	}
715	set _limits($cname) [list $vmin $vmax]
716	}
717	}
718	}
719
720	# ----------------------------------------------------------------------
721	# USAGE: download coming
722	# USAGE: download controls <downloadCommand>
723	# USAGE: download now
724	#
725	# Clients use this method to create a downloadable representation
726	# of the plot. Returns a list of the form {ext string}, where
727	# "ext" is the file extension (indicating the type of data) and
728	# "string" is the data itself.
729	# ----------------------------------------------------------------------
730	itcl::body Rappture::VtkVolumeViewer::download {option args} {
731	switch $option {
732	coming {
733	if {[catch {
734	blt::winop snap $itk_component(plotarea) $_image(download)
735	}]} {
736	$_image(download) configure -width 1 -height 1
737	$_image(download) put #000000
738	}
739	}
740	controls {
741	set popup .vtkviewerdownload
742	if { ![winfo exists .vtkviewerdownload] } {
743	set inner [BuildDownloadPopup $popup [lindex $args 0]]
744	} else {
745	set inner [$popup component inner]
746	}
747	set _downloadPopup(image_controls) $inner.image_frame
748	set num [llength [get]]
749	set num [expr {($num == 1) ? "1 result" : "$num results"}]
750	set word [Rappture::filexfer::label downloadWord]
751	$inner.summary configure -text "$word $num in the following format:"
752	update idletasks ;# Fix initial sizes
753	return $popup
754	}
755	now {
756	set popup .vtkviewerdownload
757	if {[winfo exists .vtkviewerdownload]} {
758	$popup deactivate
759	}
760	switch -- $_downloadPopup(format) {
761	"image" {
762	return [$this GetImage [lindex $args 0]]
763	}
764	"vtk" {
765	return [$this GetVtkData [lindex $args 0]]
766	}
767	}
768	return ""
769	}
770	default {
771	error "bad option \"$option\": should be coming, controls, now"
772	}
773	}
774	}
775
776	# ----------------------------------------------------------------------
777	# USAGE: Connect ?<host:port>,<host:port>...?
778	#
779	# Clients use this method to establish a connection to a new
780	# server, or to reestablish a connection to the previous server.
781	# Any existing connection is automatically closed.
782	# ----------------------------------------------------------------------
783	itcl::body Rappture::VtkVolumeViewer::Connect {} {
784	set _hosts [GetServerList "vtkvis"]
785	if { "" == $_hosts } {
786	return 0
787	}
788	set _reset 1
789	set result [VisViewer::Connect $_hosts]
790	if { $result } {
791	if { $_reportClientInfo } {
792	# Tell the server the viewer, hub, user and session.
793	# Do this immediately on connect before buffering any commands
794	global env
795
796	set info {}
797	set user "???"
798	if { [info exists env(USER)] } {
799	set user $env(USER)
800	}
801	set session "???"
802	if { [info exists env(SESSION)] } {
803	set session $env(SESSION)
804	}
805	lappend info "version" "$Rappture::version"
806	lappend info "build" "$Rappture::build"
807	lappend info "svnurl" "$Rappture::svnurl"
808	lappend info "installdir" "$Rappture::installdir"
809	lappend info "hub" [exec hostname]
810	lappend info "client" "vtkvolumeviewer"
811	lappend info "user" $user
812	lappend info "session" $session
813	SendCmd "clientinfo [list $info]"
814	}
815
816	set w [winfo width $itk_component(view)]
817	set h [winfo height $itk_component(view)]
818	EventuallyResize $w $h
819	}
820	return $result
821	}
822
823	#
824	# isconnected --
825	#
826	# Indicates if we are currently connected to the visualization server.
827	#
828	itcl::body Rappture::VtkVolumeViewer::isconnected {} {
829	return [VisViewer::IsConnected]
830	}
831
832	#
833	# disconnect --
834	#
835	itcl::body Rappture::VtkVolumeViewer::disconnect {} {
836	Disconnect
837	set _reset 1
838	}
839
840	#
841	# Disconnect --
842	#
843	# Clients use this method to disconnect from the current rendering server.
844	#
845	itcl::body Rappture::VtkVolumeViewer::Disconnect {} {
846	VisViewer::Disconnect
847
848	$_dispatcher cancel !rebuild
849	$_dispatcher cancel !resize
850	$_dispatcher cancel !rotate
851	$_dispatcher cancel !xcutplane
852	$_dispatcher cancel !ycutplane
853	$_dispatcher cancel !zcutplane
854	$_dispatcher cancel !legend
855	# disconnected -- no more data sitting on server
856	array unset _datasets
857	array unset _colormaps
858	array unset _dataset2style
859
860	set _resizePending 0
861	set _rotatePending 0
862	set _cutplanePending 0
863	set _legendPending 0
864	}
865
866	# ----------------------------------------------------------------------
867	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
868	#
869	# Invoked automatically whenever the "image" command comes in from
870	# the rendering server. Indicates that binary image data with the
871	# specified <size> will follow.
872	# ----------------------------------------------------------------------
873	itcl::body Rappture::VtkVolumeViewer::ReceiveImage { args } {
874	array set info {
875	-token "???"
876	-bytes 0
877	-type image
878	}
879	array set info $args
880	set bytes [ReceiveBytes $info(-bytes)]
881	StopWaiting
882	if { $info(-type) == "image" } {
883	if 0 {
884	set f [open "last.ppm" "w"]
885	fconfigure $f -encoding binary
886	puts -nonewline $f $bytes
887	close $f
888	}
889	$_image(plot) configure -data $bytes
890	#puts stderr "[clock format [clock seconds]]: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
891	if { $_start > 0 } {
892	set finish [clock clicks -milliseconds]
893	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
894	set _start 0
895	}
896	} elseif { $info(type) == "print" } {
897	set tag $this-print-$info(-token)
898	set _hardcopy($tag) $bytes
899	}
900	}
901
902	#
903	# ReceiveDataset --
904	#
905	itcl::body Rappture::VtkVolumeViewer::ReceiveDataset { args } {
906	if { ![isconnected] } {
907	return
908	}
909	set option [lindex $args 0]
910	switch -- $option {
911	"scalar" {
912	set option [lindex $args 1]
913	switch -- $option {
914	"world" {
915	foreach { x y z value tag } [lrange $args 2 end] break
916	}
917	"pixel" {
918	foreach { x y value tag } [lrange $args 2 end] break
919	}
920	}
921	}
922	"vector" {
923	set option [lindex $args 1]
924	switch -- $option {
925	"world" {
926	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
927	}
928	"pixel" {
929	foreach { x y vx vy vz tag } [lrange $args 2 end] break
930	}
931	}
932	}
933	"names" {
934	foreach { name } [lindex $args 1] {
935	#puts stderr "Dataset: $name"
936	}
937	}
938	default {
939	error "unknown dataset option \"$option\" from server"
940	}
941	}
942	}
943
944	# ----------------------------------------------------------------------
945	# USAGE: Rebuild
946	#
947	# Called automatically whenever something changes that affects the
948	# data in the widget. Clears any existing data and rebuilds the
949	# widget to display new data.
950	# ----------------------------------------------------------------------
951	itcl::body Rappture::VtkVolumeViewer::Rebuild {} {
952	set w [winfo width $itk_component(view)]
953	set h [winfo height $itk_component(view)]
954	if { $w < 2 \|\| $h < 2 } {
955	update
956	$_dispatcher event -idle !rebuild
957	return
958	}
959
960	# Turn on buffering of commands to the server. We don't want to
961	# be preempted by a server disconnect/reconnect (which automatically
962	# generates a new call to Rebuild).
963	StartBufferingCommands
964
965	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
966	set _width $w
967	set _height $h
968	$_arcball resize $w $h
969	DoResize
970	}
971	if { $_reset } {
972	#
973	# Reset the camera and other view parameters
974	#
975	$_arcball quaternion [ViewToQuaternion]
976	if {$_view(-ortho)} {
977	SendCmd "camera mode ortho"
978	} else {
979	SendCmd "camera mode persp"
980	}
981	DoRotate
982	PanCamera
983	set _first ""
984	InitSettings -background \
985	-xgrid -ygrid -zgrid -axisflymode \
986	-axesvisible -axislabels -axisminorticks
987	StopBufferingCommands
988	SendCmd "imgflush"
989	StartBufferingCommands
990	}
991
992	set _first ""
993	# No volumes are active (i.e. in the working set of displayed volumes).
994	# A volume is always invisible if it's not in the working set. A
995	# volume in the working set may be visible/invisible depending upon the
996	# global visibility value.
997	SendCmd "dataset visible 0"
998	foreach dataobj [get -objects] {
999	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
1000	set _first $dataobj
1001	}
1002	foreach cname [$dataobj components] {
1003	set tag $dataobj-$cname
1004	if { ![info exists _datasets($tag)] } {
1005	set bytes [$dataobj vtkdata $cname]
1006	if 0 {
1007	set f [open /tmp/vtkvolume.vtk "w"]
1008	fconfigure $f -translation binary -encoding binary
1009	puts -nonewline $f $bytes
1010	close $f
1011	}
1012	set length [string length $bytes]
1013	if { $_reportClientInfo } {
1014	set info {}
1015	lappend info "tool_id" [$dataobj hints toolid]
1016	lappend info "tool_name" [$dataobj hints toolname]
1017	lappend info "tool_title" [$dataobj hints tooltitle]
1018	lappend info "tool_command" [$dataobj hints toolcommand]
1019	lappend info "tool_revision" [$dataobj hints toolrevision]
1020	lappend info "dataset_label" [$dataobj hints label]
1021	lappend info "dataset_size" $length
1022	lappend info "dataset_tag" $tag
1023	SendCmd "clientinfo [list $info]"
1024	}
1025	SendCmd "dataset add $tag data follows $length"
1026	SendData $bytes
1027	set _datasets($tag) 1
1028	SetObjectStyle $dataobj $cname
1029	}
1030	if { [info exists _obj2ovride($dataobj-raise)] } {
1031	SendCmd "volume visible 1 $tag"
1032	}
1033	break
1034	}
1035	}
1036	if {"" != $_first} {
1037	set location [$_first hints camera]
1038	if { $location != "" } {
1039	array set view $location
1040	}
1041
1042	foreach axis { x y z } {
1043	set label [$_first hints ${axis}label]
1044	if { $label != "" } {
1045	SendCmd [list axis name $axis $label]
1046	}
1047	set units [$_first hints ${axis}units]
1048	if { $units != "" } {
1049	SendCmd [list axis units $axis $units]
1050	}
1051	}
1052	$itk_component(field) choices delete 0 end
1053	$itk_component(fieldmenu) delete 0 end
1054	array unset _fields
1055	set _curFldName ""
1056	foreach cname [$_first components] {
1057	foreach fname [$_first fieldnames $cname] {
1058	if { [info exists _fields($fname)] } {
1059	continue
1060	}
1061	foreach { label units components } \
1062	[$_first fieldinfo $fname] break
1063	# Only scalar fields are valid
1064	if {$_allowMultiComponent \|\| $components == 1} {
1065	$itk_component(field) choices insert end "$fname" "$label"
1066	$itk_component(fieldmenu) add radiobutton -label "$label" \
1067	-value $label -variable [itcl::scope _curFldLabel] \
1068	-selectcolor red \
1069	-activebackground $itk_option(-plotbackground) \
1070	-activeforeground $itk_option(-plotforeground) \
1071	-font "Arial 8" \
1072	-command [itcl::code $this Combo invoke]
1073	set _fields($fname) [list $label $units $components]
1074	if { $_curFldName == "" } {
1075	set _curFldName $fname
1076	set _curFldLabel $label
1077	}
1078	}
1079	}
1080	}
1081	$itk_component(field) value $_curFldLabel
1082	}
1083
1084	InitSettings -color \
1085	-volumevisible \
1086	-volumematerial \
1087	-volumelighting -volumeopacity -volumequality -volumeoutline \
1088	-cutplanesvisible \
1089	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1090	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1091
1092	if { $_reset } {
1093	SendCmd "camera reset"
1094	SendCmd "camera zoom $_view(-zoom)"
1095	RequestLegend
1096	set _reset 0
1097	}
1098	# Actually write the commands to the server socket. If it fails, we don't
1099	# care. We're finished here.
1100	blt::busy hold $itk_component(hull)
1101	StopBufferingCommands
1102	blt::busy release $itk_component(hull)
1103	}
1104
1105	# ----------------------------------------------------------------------
1106	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1107	#
1108	# Returns a list of server IDs for the current datasets being displayed. This
1109	# is normally a single ID, but it might be a list of IDs if the current data
1110	# object has multiple components.
1111	# ----------------------------------------------------------------------
1112	itcl::body Rappture::VtkVolumeViewer::CurrentDatasets {args} {
1113	set flag [lindex $args 0]
1114	switch -- $flag {
1115	"-all" {
1116	if { [llength $args] > 1 } {
1117	error "CurrentDatasets: can't specify dataobj after \"-all\""
1118	}
1119	set dlist [get -objects]
1120	}
1121	"-visible" {
1122	if { [llength $args] > 1 } {
1123	set dlist {}
1124	set args [lrange $args 1 end]
1125	foreach dataobj $args {
1126	if { [info exists _obj2ovride($dataobj-raise)] } {
1127	lappend dlist $dataobj
1128	}
1129	}
1130	} else {
1131	set dlist [get -visible]
1132	}
1133	}
1134	default {
1135	set dlist $args
1136	}
1137	}
1138	set rlist ""
1139	foreach dataobj $dlist {
1140	foreach comp [$dataobj components] {
1141	set tag $dataobj-$comp
1142	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1143	lappend rlist $tag
1144	}
1145	}
1146	}
1147	return $rlist
1148	}
1149
1150	# ----------------------------------------------------------------------
1151	# USAGE: Zoom in
1152	# USAGE: Zoom out
1153	# USAGE: Zoom reset
1154	#
1155	# Called automatically when the user clicks on one of the zoom
1156	# controls for this widget. Changes the zoom for the current view.
1157	# ----------------------------------------------------------------------
1158	itcl::body Rappture::VtkVolumeViewer::Zoom {option} {
1159	switch -- $option {
1160	"in" {
1161	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1162	SendCmd "camera zoom $_view(-zoom)"
1163	}
1164	"out" {
1165	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1166	SendCmd "camera zoom $_view(-zoom)"
1167	}
1168	"reset" {
1169	array set _view {
1170	-qw 0.853553
1171	-qx -0.353553
1172	-qy 0.353553
1173	-qz 0.146447
1174	-xpan 0
1175	-ypan 0
1176	-zoom 1.0
1177	}
1178	if { $_first != "" } {
1179	set location [$_first hints camera]
1180	if { $location != "" } {
1181	array set _view $location
1182	}
1183	}
1184	$_arcball quaternion [ViewToQuaternion]
1185	DoRotate
1186	SendCmd "camera reset"
1187	}
1188	}
1189	}
1190
1191	itcl::body Rappture::VtkVolumeViewer::PanCamera {} {
1192	set x $_view(-xpan)
1193	set y $_view(-ypan)
1194	SendCmd "camera pan $x $y"
1195	}
1196
1197	# ----------------------------------------------------------------------
1198	# USAGE: Rotate click <x> <y>
1199	# USAGE: Rotate drag <x> <y>
1200	# USAGE: Rotate release <x> <y>
1201	#
1202	# Called automatically when the user clicks/drags/releases in the
1203	# plot area. Moves the plot according to the user's actions.
1204	# ----------------------------------------------------------------------
1205	itcl::body Rappture::VtkVolumeViewer::Rotate {option x y} {
1206	switch -- $option {
1207	"click" {
1208	$itk_component(view) configure -cursor fleur
1209	set _click(x) $x
1210	set _click(y) $y
1211	}
1212	"drag" {
1213	if {[array size _click] == 0} {
1214	Rotate click $x $y
1215	} else {
1216	set w [winfo width $itk_component(view)]
1217	set h [winfo height $itk_component(view)]
1218	if {$w <= 0 \|\| $h <= 0} {
1219	return
1220	}
1221
1222	if {[catch {
1223	# this fails sometimes for no apparent reason
1224	set dx [expr {double($x-$_click(x))/$w}]
1225	set dy [expr {double($y-$_click(y))/$h}]
1226	}]} {
1227	return
1228	}
1229	if { $dx == 0 && $dy == 0 } {
1230	return
1231	}
1232	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1233	EventuallyRotate $q
1234	set _click(x) $x
1235	set _click(y) $y
1236	}
1237	}
1238	"release" {
1239	Rotate drag $x $y
1240	$itk_component(view) configure -cursor ""
1241	catch {unset _click}
1242	}
1243	default {
1244	error "bad option \"$option\": should be click, drag, release"
1245	}
1246	}
1247	}
1248
1249	itcl::body Rappture::VtkVolumeViewer::Pick {x y} {
1250	foreach tag [CurrentDatasets -visible] {
1251	SendCmd "dataset getscalar pixel $x $y $tag"
1252	}
1253	}
1254
1255	# ----------------------------------------------------------------------
1256	# USAGE: $this Pan click x y
1257	# $this Pan drag x y
1258	# $this Pan release x y
1259	#
1260	# Called automatically when the user clicks on one of the zoom
1261	# controls for this widget. Changes the zoom for the current view.
1262	# ----------------------------------------------------------------------
1263	itcl::body Rappture::VtkVolumeViewer::Pan {option x y} {
1264	switch -- $option {
1265	"set" {
1266	set w [winfo width $itk_component(view)]
1267	set h [winfo height $itk_component(view)]
1268	set x [expr $x / double($w)]
1269	set y [expr $y / double($h)]
1270	set _view(-xpan) [expr $_view(-xpan) + $x]
1271	set _view(-ypan) [expr $_view(-ypan) + $y]
1272	PanCamera
1273	return
1274	}
1275	"click" {
1276	set _click(x) $x
1277	set _click(y) $y
1278	$itk_component(view) configure -cursor hand1
1279	}
1280	"drag" {
1281	if { ![info exists _click(x)] } {
1282	set _click(x) $x
1283	}
1284	if { ![info exists _click(y)] } {
1285	set _click(y) $y
1286	}
1287	set w [winfo width $itk_component(view)]
1288	set h [winfo height $itk_component(view)]
1289	set dx [expr ($_click(x) - $x)/double($w)]
1290	set dy [expr ($_click(y) - $y)/double($h)]
1291	set _click(x) $x
1292	set _click(y) $y
1293	set _view(-xpan) [expr $_view(-xpan) - $dx]
1294	set _view(-ypan) [expr $_view(-ypan) - $dy]
1295	PanCamera
1296	}
1297	"release" {
1298	Pan drag $x $y
1299	$itk_component(view) configure -cursor ""
1300	}
1301	default {
1302	error "unknown option \"$option\": should set, click, drag, or release"
1303	}
1304	}
1305	}
1306
1307	# ----------------------------------------------------------------------
1308	# USAGE: InitSettings <what> ?<value>?
1309	#
1310	# Used internally to update rendering settings whenever parameters
1311	# change in the popup settings panel. Sends the new settings off
1312	# to the back end.
1313	# ----------------------------------------------------------------------
1314	itcl::body Rappture::VtkVolumeViewer::InitSettings { args } {
1315	foreach spec $args {
1316	if { [info exists _settings($_first${spec})] } {
1317	# Reset global setting with dataobj specific setting
1318	set _settings($spec) $_settings($_first${spec})
1319	}
1320	AdjustSetting $spec
1321	}
1322	}
1323
1324	#
1325	# AdjustSetting --
1326	#
1327	# Changes/updates a specific setting in the widget. There are
1328	# usually user-setable option. Commands are sent to the render
1329	# server.
1330	#
1331	itcl::body Rappture::VtkVolumeViewer::AdjustSetting {what {value ""}} {
1332	if { ![isconnected] } {
1333	return
1334	}
1335	switch -- $what {
1336	"-background" {
1337	set bgcolor [$itk_component(background) value]
1338	set _settings($what) $bgcolor
1339	array set fgcolors {
1340	"black" "white"
1341	"white" "black"
1342	"grey" "black"
1343	}
1344	configure -plotbackground $bgcolor \
1345	-plotforeground $fgcolors($bgcolor)
1346	$itk_component(view) delete "legend"
1347	DrawLegend
1348	}
1349	"-volumeoutline" {
1350	set bool $_settings($what)
1351	SendCmd "outline visible 0"
1352	foreach tag [CurrentDatasets -visible] {
1353	SendCmd "outline visible $bool $tag"
1354	}
1355	}
1356	"-legendvisible" {
1357	DrawLegend
1358	}
1359	"-volumevisible" {
1360	set bool $_settings($what)
1361	foreach tag [CurrentDatasets -visible] {
1362	SendCmd "volume visible $bool $tag"
1363	}
1364	if { $bool } {
1365	Rappture::Tooltip::for $itk_component(volume) \
1366	"Hide the volume"
1367	} else {
1368	Rappture::Tooltip::for $itk_component(volume) \
1369	"Show the volume"
1370	}
1371	}
1372	"-volumematerial" {
1373	set val $_settings($what)
1374	set diffuse [expr {0.01*$val}]
1375	set specular [expr {0.01*$val}]
1376	#set power [expr {sqrt(160*$val+1.0)}]
1377	set power [expr {$val+1.0}]
1378	foreach tag [CurrentDatasets -visible] {
1379	SendCmd "volume shading diffuse $diffuse $tag"
1380	SendCmd "volume shading specular $specular $power $tag"
1381	}
1382	}
1383	"-volumelighting" {
1384	set bool $_settings($what)
1385	foreach tag [CurrentDatasets -visible] {
1386	SendCmd "volume lighting $bool $tag"
1387	}
1388	}
1389	"-volumeopacity" {
1390	set val $_settings($what)
1391	set val [expr {0.01*$val}]
1392	foreach tag [CurrentDatasets -visible] {
1393	SendCmd "volume opacity $val $tag"
1394	}
1395	}
1396	"-volumequality" {
1397	set val $_settings($what)
1398	set val [expr {0.01*$val}]
1399	foreach tag [CurrentDatasets -visible] {
1400	SendCmd "volume quality $val $tag"
1401	}
1402	}
1403	"-axesvisible" {
1404	set bool $_settings($what)
1405	SendCmd "axis visible all $bool"
1406	}
1407	"-axislabels" {
1408	set bool $_settings($what)
1409	SendCmd "axis labels all $bool"
1410	}
1411	"-axisminorticks" {
1412	set bool $_settings($what)
1413	SendCmd "axis minticks all $bool"
1414	}
1415	"-xgrid" - "-ygrid" - "-zgrid" {
1416	set axis [string range $what 1 1]
1417	set bool $_settings($what)
1418	SendCmd "axis grid $axis $bool"
1419	}
1420	"-axisflymode" {
1421	set mode [$itk_component(axismode) value]
1422	set mode [$itk_component(axismode) translate $mode]
1423	set _settings($what) $mode
1424	SendCmd "axis flymode $mode"
1425	}
1426	"-cutplanesvisible" {
1427	set bool $_settings($what)
1428	foreach dataset [CurrentDatasets -visible] {
1429	SendCmd "$_cutplaneCmd visible $bool $dataset"
1430	}
1431	}
1432	"-cutplanelighting" {
1433	set bool $_settings($what)
1434	foreach dataset [CurrentDatasets -visible] {
1435	if {$_cutplaneCmd != "imgcutplane"} {
1436	SendCmd "$_cutplaneCmd lighting $bool $dataset"
1437	} else {
1438	if {$bool} {
1439	set ambient 0.0
1440	set diffuse 1.0
1441	} else {
1442	set ambient 1.0
1443	set diffuse 0.0
1444	}
1445	SendCmd "imgcutplane material $ambient $diffuse $dataset"
1446	}
1447	}
1448	}
1449	"-cutplaneopacity" {
1450	set val $_settings($what)
1451	set sval [expr { 0.01 * double($val) }]
1452	foreach dataset [CurrentDatasets -visible] {
1453	SendCmd "$_cutplaneCmd opacity $sval $dataset"
1454	}
1455	}
1456	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1457	set axis [string range $what 1 1]
1458	set bool $_settings($what)
1459	if { $bool } {
1460	$itk_component(${axis}CutScale) configure -state normal \
1461	-troughcolor white
1462	} else {
1463	$itk_component(${axis}CutScale) configure -state disabled \
1464	-troughcolor grey82
1465	}
1466	foreach dataset [CurrentDatasets -visible] {
1467	SendCmd "$_cutplaneCmd axis $axis $bool $dataset"
1468	}
1469	}
1470	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1471	set axis [string range $what 1 1]
1472	set pos [expr $_settings($what) * 0.01]
1473	foreach dataset [CurrentDatasets -visible] {
1474	SendCmd "$_cutplaneCmd slice ${axis} ${pos} $dataset"
1475	}
1476	set _cutplanePending 0
1477	}
1478	"-color" {
1479	set color [$itk_component(colormap) value]
1480	set _settings($what) $color
1481	foreach dataset [CurrentDatasets -visible $_first] {
1482	foreach {dataobj comp} [split $dataset -] break
1483	ChangeColormap $dataobj $comp $color
1484	}
1485	EventuallyRequestLegend
1486	}
1487	"-field" {
1488	set label [$itk_component(field) value]
1489	set fname [$itk_component(field) translate $label]
1490	set _settings($what) $fname
1491	if { [info exists _fields($fname)] } {
1492	foreach { label units components } $_fields($fname) break
1493	if { !$_allowMultiComponent && $components > 1 } {
1494	puts stderr "Can't use a vector field in a volume"
1495	return
1496	} else {
1497	if { $components > 1 } {
1498	set _colorMode vmag
1499	} else {
1500	set _colorMode scalar
1501	}
1502	}
1503	set _curFldName $fname
1504	set _curFldLabel $label
1505	} else {
1506	puts stderr "unknown field \"$fname\""
1507	return
1508	}
1509	foreach dataset [CurrentDatasets -visible $_first] {
1510	#SendCmd "$_cutplaneCmd colormode $_colorMode $_curFldName $dataset"
1511	SendCmd "dataset scalar $_curFldName $dataset"
1512	}
1513	SendCmd "camera reset"
1514	DrawLegend
1515	}
1516	default {
1517	error "don't know how to fix $what"
1518	}
1519	}
1520	}
1521
1522	#
1523	# RequestLegend --
1524	#
1525	# Request a new legend from the server. The size of the legend
1526	# is determined from the height of the canvas.
1527	#
1528	itcl::body Rappture::VtkVolumeViewer::RequestLegend {} {
1529	set _legendPending 0
1530	set font "Arial 8"
1531	set lineht [font metrics $font -linespace]
1532	set w 12
1533	set h [expr {$_height - 3 * ($lineht + 2)}]
1534	if { $h < 1 } {
1535	return
1536	}
1537	# Set the legend on the first volume dataset.
1538	foreach dataset [CurrentDatasets -visible $_first] {
1539	foreach {dataobj comp} [split $dataset -] break
1540	if { [info exists _dataset2style($dataset)] } {
1541	#SendCmd "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1542	SendCmd "legend2 $_dataset2style($dataset) $w $h"
1543	break;
1544	}
1545	}
1546	}
1547
1548	#
1549	# ChangeColormap --
1550	#
1551	itcl::body Rappture::VtkVolumeViewer::ChangeColormap {dataobj comp color} {
1552	set tag $dataobj-$comp
1553	if { ![info exist _style($tag)] } {
1554	error "no initial colormap"
1555	}
1556	array set style $_style($tag)
1557	set style(-color) $color
1558	set _style($tag) [array get style]
1559	SetColormap $dataobj $comp
1560	}
1561
1562	#
1563	# SetColormap --
1564	#
1565	itcl::body Rappture::VtkVolumeViewer::SetColormap { dataobj comp } {
1566	array set style {
1567	-color BCGYR
1568	-levels 6
1569	}
1570	set tag $dataobj-$comp
1571	if { ![info exists _initialStyle($tag)] } {
1572	# Save the initial component style.
1573	set _initialStyle($tag) [$dataobj style $comp]
1574	}
1575
1576	# Override defaults with initial style defined in xml.
1577	array set style $_initialStyle($tag)
1578
1579	if { ![info exists _style($tag)] } {
1580	set _style($tag) [array get style]
1581	}
1582	# Override initial style with current style.
1583	array set style $_style($tag)
1584
1585	set name "$style(-color):$style(-levels)"
1586	if { ![info exists _colormaps($name)] } {
1587	BuildColormap $name [array get style]
1588	set _colormaps($name) 1
1589	}
1590	if { ![info exists _dataset2style($tag)] \|\|
1591	$_dataset2style($tag) != $name } {
1592	SendCmd "volume colormap $name $tag"
1593	SendCmd "$_cutplaneCmd colormap $name-opaque $tag"
1594	set _dataset2style($tag) $name
1595	}
1596	}
1597
1598	#
1599	# BuildColormap --
1600	#
1601	# Alpha map is in the format: normalized_value opacity midpoint sharpness
1602	#
1603	itcl::body Rappture::VtkVolumeViewer::BuildColormap { name styles } {
1604	array set style $styles
1605	set cmap [ColorsToColormap $style(-color)]
1606	if { [llength $cmap] == 0 } {
1607	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1608	}
1609
1610	set amap "0.0 0.0 0.5 0.0 1.0 1.0 0.5 0.0"
1611	set opaqueAmap "0.0 1.0 1.0 1.0"
1612	SendCmd [list colormap define $name $cmap -spline $amap]
1613	SendCmd [list colormap define $name-opaque $cmap $opaqueAmap]
1614	}
1615
1616	# ----------------------------------------------------------------------
1617	# CONFIGURATION OPTION: -plotbackground
1618	# ----------------------------------------------------------------------
1619	itcl::configbody Rappture::VtkVolumeViewer::plotbackground {
1620	if { [isconnected] } {
1621	set color $itk_option(-plotbackground)
1622	set rgb [Color2RGB $color]
1623	SendCmd "screen bgcolor $rgb"
1624	$itk_component(legend) configure -background $color
1625	}
1626	}
1627
1628	# ----------------------------------------------------------------------
1629	# CONFIGURATION OPTION: -plotforeground
1630	# ----------------------------------------------------------------------
1631	itcl::configbody Rappture::VtkVolumeViewer::plotforeground {
1632	if { [isconnected] } {
1633	set color $itk_option(-plotforeground)
1634	set rgb [Color2RGB $color]
1635	SendCmd "axis color all $rgb"
1636	SendCmd "outline color $rgb"
1637	SendCmd "$_cutplaneCmd color $rgb"
1638	$itk_component(legend) itemconfigure labels -fill $color
1639	$itk_component(legend) itemconfigure limits -fill $color
1640	}
1641	}
1642
1643	itcl::body Rappture::VtkVolumeViewer::BuildViewTab {} {
1644	set font [option get $itk_component(hull) font Font]
1645
1646	set inner [$itk_component(main) insert end \
1647	-title "View Settings" \
1648	-icon [Rappture::icon wrench]]
1649	$inner configure -borderwidth 4
1650
1651	checkbutton $inner.axes \
1652	-text "Axes" \
1653	-variable [itcl::scope _settings(-axesvisible)] \
1654	-command [itcl::code $this AdjustSetting -axesvisible] \
1655	-font $font
1656
1657	checkbutton $inner.outline \
1658	-text "Outline" \
1659	-variable [itcl::scope _settings(-volumeoutline)] \
1660	-command [itcl::code $this AdjustSetting -volumeoutline] \
1661	-font $font
1662
1663	checkbutton $inner.legend \
1664	-text "Legend" \
1665	-variable [itcl::scope _settings(-legendvisible)] \
1666	-command [itcl::code $this AdjustSetting -legendvisible] \
1667	-font $font
1668
1669	checkbutton $inner.volume \
1670	-text "Volume" \
1671	-variable [itcl::scope _settings(-volumevisible)] \
1672	-command [itcl::code $this AdjustSetting -volumevisible] \
1673	-font $font
1674
1675	label $inner.background_l -text "Background" -font $font
1676	itk_component add background {
1677	Rappture::Combobox $inner.background -width 10 -editable no
1678	}
1679	$inner.background choices insert end \
1680	"black" "black" \
1681	"white" "white" \
1682	"grey" "grey"
1683
1684	$itk_component(background) value $_settings(-background)
1685	bind $inner.background <<Value>> \
1686	[itcl::code $this AdjustSetting -background]
1687
1688	blt::table $inner \
1689	0,0 $inner.axes -cspan 2 -anchor w \
1690	1,0 $inner.outline -cspan 2 -anchor w \
1691	2,0 $inner.volume -cspan 2 -anchor w \
1692	3,0 $inner.legend -cspan 2 -anchor w \
1693	4,0 $inner.background_l -anchor e -pady 2 \
1694	4,1 $inner.background -fill x
1695
1696	blt::table configure $inner r* -resize none
1697	blt::table configure $inner r5 -resize expand
1698	}
1699
1700	itcl::body Rappture::VtkVolumeViewer::BuildVolumeTab {} {
1701	set font [option get $itk_component(hull) font Font]
1702	#set bfont [option get $itk_component(hull) boldFont Font]
1703	set bfont "Arial 9 bold"
1704
1705	set inner [$itk_component(main) insert end \
1706	-title "Volume Settings" \
1707	-icon [Rappture::icon volume-on]]
1708	$inner configure -borderwidth 4
1709
1710	checkbutton $inner.visibility \
1711	-text "Visible" \
1712	-font $font \
1713	-variable [itcl::scope _settings(-volumevisible)] \
1714	-command [itcl::code $this AdjustSetting -volumevisible]
1715
1716	checkbutton $inner.lighting \
1717	-text "Enable Lighting" \
1718	-font $font \
1719	-variable [itcl::scope _settings(-volumelighting)] \
1720	-command [itcl::code $this AdjustSetting -volumelighting]
1721
1722	label $inner.dim_l -text "Dim" -font $font
1723	::scale $inner.material -from 0 -to 100 -orient horizontal \
1724	-variable [itcl::scope _settings(-volumematerial)] \
1725	-showvalue off \
1726	-command [itcl::code $this AdjustSetting -volumematerial]
1727	label $inner.bright_l -text "Bright" -font $font
1728
1729	label $inner.opacity_l -text "Opacity" -font $font
1730	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1731	-variable [itcl::scope _settings(-volumeopacity)] \
1732	-showvalue off \
1733	-command [itcl::code $this AdjustSetting -volumeopacity]
1734
1735	label $inner.quality_l -text "Quality" -font $font
1736	::scale $inner.quality -from 0 -to 100 -orient horizontal \
1737	-variable [itcl::scope _settings(-volumequality)] \
1738	-showvalue off \
1739	-command [itcl::code $this AdjustSetting -volumequality]
1740
1741	label $inner.field_l -text "Field" -font $font
1742	itk_component add field {
1743	Rappture::Combobox $inner.field -editable no
1744	}
1745	bind $inner.field <<Value>> \
1746	[itcl::code $this AdjustSetting -field]
1747
1748	label $inner.colormap_l -text "Colormap" -font $font
1749	itk_component add colormap {
1750	Rappture::Combobox $inner.colormap -editable no
1751	}
1752	$inner.colormap choices insert end [GetColormapList]
1753	bind $inner.colormap <<Value>> \
1754	[itcl::code $this AdjustSetting -color]
1755	$itk_component(colormap) value $_settings(-color)
1756
1757	blt::table $inner \
1758	0,0 $inner.field_l -anchor w -pady 2 \
1759	0,1 $inner.field -fill x -pady 2 -cspan 3 \
1760	1,0 $inner.visibility -anchor w -pady 2 -cspan 4 \
1761	2,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1762	3,0 $inner.dim_l -anchor e -pady 2 \
1763	3,1 $inner.material -fill x -pady 2 -cspan 2 \
1764	3,3 $inner.bright_l -anchor w -pady 2 \
1765	4,0 $inner.opacity_l -anchor w -pady 2 -cspan 4 \
1766	5,0 $inner.opacity -fill x -pady 2 -cspan 4 \
1767	6,0 $inner.quality_l -anchor w -pady 2 -cspan 4 \
1768	7,0 $inner.quality -fill x -pady 2 -cspan 4 \
1769	8,0 $inner.colormap_l -anchor w -pady 2 \
1770	8,1 $inner.colormap -fill x -pady 2 -cspan 3
1771
1772	blt::table configure $inner r* c0 c1 c3 -resize none
1773	blt::table configure $inner r9 c2 -resize expand
1774	}
1775
1776	itcl::body Rappture::VtkVolumeViewer::BuildAxisTab {} {
1777	set font [option get $itk_component(hull) font Font]
1778
1779	set inner [$itk_component(main) insert end \
1780	-title "Axis Settings" \
1781	-icon [Rappture::icon axis2]]
1782	$inner configure -borderwidth 4
1783
1784	checkbutton $inner.visible \
1785	-text "Axes" \
1786	-variable [itcl::scope _settings(-axesvisible)] \
1787	-command [itcl::code $this AdjustSetting -axesvisible] \
1788	-font $font
1789
1790	checkbutton $inner.labels \
1791	-text "Axis Labels" \
1792	-variable [itcl::scope _settings(-axislabels)] \
1793	-command [itcl::code $this AdjustSetting -axislabels] \
1794	-font $font
1795	label $inner.grid_l -text "Grid" -font $font
1796	checkbutton $inner.xgrid \
1797	-text "X" \
1798	-variable [itcl::scope _settings(-xgrid)] \
1799	-command [itcl::code $this AdjustSetting -xgrid] \
1800	-font $font
1801	checkbutton $inner.ygrid \
1802	-text "Y" \
1803	-variable [itcl::scope _settings(-ygrid)] \
1804	-command [itcl::code $this AdjustSetting -ygrid] \
1805	-font $font
1806	checkbutton $inner.zgrid \
1807	-text "Z" \
1808	-variable [itcl::scope _settings(-zgrid)] \
1809	-command [itcl::code $this AdjustSetting -zgrid] \
1810	-font $font
1811	checkbutton $inner.minorticks \
1812	-text "Minor Ticks" \
1813	-variable [itcl::scope _settings(-axisminorticks)] \
1814	-command [itcl::code $this AdjustSetting -axisminorticks] \
1815	-font $font
1816
1817	label $inner.mode_l -text "Mode" -font $font
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" "farthest" \
1826	"outer_edges" "outer"
1827	$itk_component(axismode) value $_settings(-axisflymode)
1828	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
1829
1830	blt::table $inner \
1831	0,0 $inner.visible -anchor w -cspan 4 \
1832	1,0 $inner.labels -anchor w -cspan 4 \
1833	2,0 $inner.minorticks -anchor w -cspan 4 \
1834	4,0 $inner.grid_l -anchor w \
1835	4,1 $inner.xgrid -anchor w \
1836	4,2 $inner.ygrid -anchor w \
1837	4,3 $inner.zgrid -anchor w \
1838	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1839	5,1 $inner.mode -fill x -cspan 3
1840
1841	blt::table configure $inner r* c* -resize none
1842	blt::table configure $inner r7 c6 -resize expand
1843	blt::table configure $inner r3 -height 0.125i
1844	}
1845
1846	itcl::body Rappture::VtkVolumeViewer::BuildCameraTab {} {
1847	set font [option get $itk_component(hull) font Font]
1848	set inner [$itk_component(main) insert end \
1849	-title "Camera Settings" \
1850	-icon [Rappture::icon camera]]
1851	$inner configure -borderwidth 4
1852
1853	label $inner.view_l -text "view" -font $font
1854	set f [frame $inner.view]
1855	foreach side { front back left right top bottom } {
1856	button $f.$side -image [Rappture::icon view$side] \
1857	-command [itcl::code $this SetOrientation $side]
1858	Rappture::Tooltip::for $f.$side "Change the view to $side"
1859	pack $f.$side -side left
1860	}
1861	blt::table $inner \
1862	0,0 $inner.view_l -anchor e -pady 2 \
1863	0,1 $inner.view -anchor w -pady 2
1864	blt::table configure $inner r0 -resize none
1865
1866	set row 1
1867	set labels { qx qy qz qw xpan ypan zoom }
1868	foreach tag $labels {
1869	label $inner.${tag}label -text $tag -font $font
1870	entry $inner.${tag} -font $font -bg white \
1871	-textvariable [itcl::scope _view(-$tag)]
1872	bind $inner.${tag} <Return> \
1873	[itcl::code $this camera set -${tag}]
1874	bind $inner.${tag} <KP_Enter> \
1875	[itcl::code $this camera set -${tag}]
1876	blt::table $inner \
1877	$row,0 $inner.${tag}label -anchor e -pady 2 \
1878	$row,1 $inner.${tag} -anchor w -pady 2
1879	blt::table configure $inner r$row -resize none
1880	incr row
1881	}
1882	checkbutton $inner.ortho \
1883	-text "Orthographic Projection" \
1884	-variable [itcl::scope _view(-ortho)] \
1885	-command [itcl::code $this camera set -ortho] \
1886	-font $font
1887	blt::table $inner \
1888	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1889	blt::table configure $inner r$row -resize none
1890	incr row
1891
1892	blt::table configure $inner c0 c1 -resize none
1893	blt::table configure $inner c2 -resize expand
1894	blt::table configure $inner r$row -resize expand
1895	}
1896
1897	itcl::body Rappture::VtkVolumeViewer::BuildCutplanesTab {} {
1898	set font [option get $itk_component(hull) font Font]
1899
1900	set inner [$itk_component(main) insert end \
1901	-title "Cutplane Settings" \
1902	-icon [Rappture::icon cutbutton]]
1903
1904	$inner configure -borderwidth 4
1905
1906	checkbutton $inner.visible \
1907	-text "Show Cutplanes" \
1908	-variable [itcl::scope _settings(-cutplanesvisible)] \
1909	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1910	-font $font
1911
1912	checkbutton $inner.lighting \
1913	-text "Enable Lighting" \
1914	-variable [itcl::scope _settings(-cutplanelighting)] \
1915	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1916	-font $font
1917
1918	label $inner.opacity_l -text "Opacity" -font $font
1919	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1920	-variable [itcl::scope _settings(-cutplaneopacity)] \
1921	-width 10 \
1922	-showvalue off \
1923	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1924	$inner.opacity set $_settings(-cutplaneopacity)
1925
1926	# X-value slicer...
1927	itk_component add xCutButton {
1928	Rappture::PushButton $inner.xbutton \
1929	-onimage [Rappture::icon x-cutplane] \
1930	-offimage [Rappture::icon x-cutplane] \
1931	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1932	-variable [itcl::scope _settings(-xcutplanevisible)]
1933	}
1934	Rappture::Tooltip::for $itk_component(xCutButton) \
1935	"Toggle the X-axis cutplane on/off"
1936	$itk_component(xCutButton) select
1937
1938	itk_component add xCutScale {
1939	::scale $inner.xval -from 100 -to 0 \
1940	-width 10 -orient vertical -showvalue yes \
1941	-borderwidth 1 -highlightthickness 0 \
1942	-command [itcl::code $this EventuallySetCutplane x] \
1943	-variable [itcl::scope _settings(-xcutplaneposition)]
1944	} {
1945	usual
1946	ignore -borderwidth -highlightthickness
1947	}
1948	# Set the default cutplane value before disabling the scale.
1949	$itk_component(xCutScale) set 50
1950	$itk_component(xCutScale) configure -state disabled
1951	Rappture::Tooltip::for $itk_component(xCutScale) \
1952	"@[itcl::code $this Slice tooltip x]"
1953
1954	# Y-value slicer...
1955	itk_component add yCutButton {
1956	Rappture::PushButton $inner.ybutton \
1957	-onimage [Rappture::icon y-cutplane] \
1958	-offimage [Rappture::icon y-cutplane] \
1959	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1960	-variable [itcl::scope _settings(-ycutplanevisible)]
1961	}
1962	Rappture::Tooltip::for $itk_component(yCutButton) \
1963	"Toggle the Y-axis cutplane on/off"
1964	$itk_component(yCutButton) select
1965
1966	itk_component add yCutScale {
1967	::scale $inner.yval -from 100 -to 0 \
1968	-width 10 -orient vertical -showvalue yes \
1969	-borderwidth 1 -highlightthickness 0 \
1970	-command [itcl::code $this EventuallySetCutplane y] \
1971	-variable [itcl::scope _settings(-ycutplaneposition)]
1972	} {
1973	usual
1974	ignore -borderwidth -highlightthickness
1975	}
1976	Rappture::Tooltip::for $itk_component(yCutScale) \
1977	"@[itcl::code $this Slice tooltip y]"
1978	# Set the default cutplane value before disabling the scale.
1979	$itk_component(yCutScale) set 50
1980	$itk_component(yCutScale) configure -state disabled
1981
1982	# Z-value slicer...
1983	itk_component add zCutButton {
1984	Rappture::PushButton $inner.zbutton \
1985	-onimage [Rappture::icon z-cutplane] \
1986	-offimage [Rappture::icon z-cutplane] \
1987	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1988	-variable [itcl::scope _settings(-zcutplanevisible)]
1989	}
1990	Rappture::Tooltip::for $itk_component(zCutButton) \
1991	"Toggle the Z-axis cutplane on/off"
1992	$itk_component(zCutButton) select
1993
1994	itk_component add zCutScale {
1995	::scale $inner.zval -from 100 -to 0 \
1996	-width 10 -orient vertical -showvalue yes \
1997	-borderwidth 1 -highlightthickness 0 \
1998	-command [itcl::code $this EventuallySetCutplane z] \
1999	-variable [itcl::scope _settings(-zcutplaneposition)]
2000	} {
2001	usual
2002	ignore -borderwidth -highlightthickness
2003	}
2004	$itk_component(zCutScale) set 50
2005	$itk_component(zCutScale) configure -state disabled
2006	Rappture::Tooltip::for $itk_component(zCutScale) \
2007	"@[itcl::code $this Slice tooltip z]"
2008
2009	blt::table $inner \
2010	0,0 $inner.visible -anchor w -pady 2 -cspan 4 \
2011	1,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2012	2,0 $inner.opacity_l -anchor w -pady 2 -cspan 3 \
2013	3,0 $inner.opacity -fill x -pady 2 -cspan 3 \
2014	4,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
2015	5,0 $itk_component(xCutScale) -fill y \
2016	4,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
2017	5,1 $itk_component(yCutScale) -fill y \
2018	4,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
2019	5,2 $itk_component(zCutScale) -fill y
2020
2021	blt::table configure $inner r* c* -resize none
2022	blt::table configure $inner r5 c3 -resize expand
2023	}
2024
2025	#
2026	# camera --
2027	#
2028	itcl::body Rappture::VtkVolumeViewer::camera {option args} {
2029	switch -- $option {
2030	"show" {
2031	puts [array get _view]
2032	}
2033	"set" {
2034	set what [lindex $args 0]
2035	set x $_view($what)
2036	set code [catch { string is double $x } result]
2037	if { $code != 0 \|\| !$result } {
2038	return
2039	}
2040	switch -- $what {
2041	"-ortho" {
2042	if {$_view($what)} {
2043	SendCmd "camera mode ortho"
2044	} else {
2045	SendCmd "camera mode persp"
2046	}
2047	}
2048	"-xpan" - "-ypan" {
2049	PanCamera
2050	}
2051	"-qx" - "-qy" - "-qz" - "-qw" {
2052	set q [ViewToQuaternion]
2053	$_arcball quaternion $q
2054	EventuallyRotate $q
2055	}
2056	"-zoom" {
2057	SendCmd "camera zoom $_view($what)"
2058	}
2059	}
2060	}
2061	}
2062	}
2063
2064	itcl::body Rappture::VtkVolumeViewer::GetVtkData { args } {
2065	set bytes ""
2066	foreach dataobj [get] {
2067	foreach comp [$dataobj components] {
2068	set tag $dataobj-$comp
2069	set contents [$dataobj vtkdata $comp]
2070	append bytes "$contents\n"
2071	}
2072	}
2073	return [list .vtk $bytes]
2074	}
2075
2076	itcl::body Rappture::VtkVolumeViewer::GetImage { args } {
2077	if { [image width $_image(download)] > 0 &&
2078	[image height $_image(download)] > 0 } {
2079	set bytes [$_image(download) data -format "jpeg -quality 100"]
2080	set bytes [Rappture::encoding::decode -as b64 $bytes]
2081	return [list .jpg $bytes]
2082	}
2083	return ""
2084	}
2085
2086	itcl::body Rappture::VtkVolumeViewer::BuildDownloadPopup { popup command } {
2087	Rappture::Balloon $popup \
2088	-title "[Rappture::filexfer::label downloadWord] as..."
2089	set inner [$popup component inner]
2090	label $inner.summary -text "" -anchor w
2091	radiobutton $inner.vtk_button -text "VTK data file" \
2092	-variable [itcl::scope _downloadPopup(format)] \
2093	-font "Helvetica 9 " \
2094	-value vtk
2095	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2096	radiobutton $inner.image_button -text "Image File" \
2097	-variable [itcl::scope _downloadPopup(format)] \
2098	-value image
2099	Rappture::Tooltip::for $inner.image_button \
2100	"Save as digital image."
2101
2102	button $inner.ok -text "Save" \
2103	-highlightthickness 0 -pady 2 -padx 3 \
2104	-command $command \
2105	-compound left \
2106	-image [Rappture::icon download]
2107
2108	button $inner.cancel -text "Cancel" \
2109	-highlightthickness 0 -pady 2 -padx 3 \
2110	-command [list $popup deactivate] \
2111	-compound left \
2112	-image [Rappture::icon cancel]
2113
2114	blt::table $inner \
2115	0,0 $inner.summary -cspan 2 \
2116	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2117	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2118	4,1 $inner.cancel -width .9i -fill y \
2119	4,0 $inner.ok -padx 2 -width .9i -fill y
2120	blt::table configure $inner r3 -height 4
2121	blt::table configure $inner r4 -pady 4
2122	raise $inner.image_button
2123	$inner.vtk_button invoke
2124	return $inner
2125	}
2126
2127	itcl::body Rappture::VtkVolumeViewer::SetObjectStyle { dataobj cname } {
2128	# Parse style string.
2129	set tag $dataobj-$cname
2130	array set style {
2131	-color BCGYR
2132	-lighting 1
2133	-opacity 0.5
2134	-outline 0
2135	-visible 1
2136	}
2137	array set style [$dataobj style $cname]
2138	set _settings(-volumelighting) $style(-lighting)
2139	set _settings(-volumeopacity) [expr $style(-opacity) * 100.0]
2140	set _settings(-volumeoutline) $style(-outline)
2141	set _settings(-volumevisible) $style(-visible)
2142
2143	$itk_component(colormap) value $style(-color)
2144
2145	SendCmd "outline add $tag"
2146	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2147	SendCmd "outline visible $style(-outline) $tag"
2148
2149	SendCmd "$_cutplaneCmd add $tag"
2150	SendCmd "$_cutplaneCmd color [Color2RGB $itk_option(-plotforeground)] $tag"
2151	SendCmd "$_cutplaneCmd visible 0 $tag"
2152
2153	SendCmd "volume add $tag"
2154	SendCmd "volume lighting $style(-lighting) $tag"
2155	SendCmd "volume opacity $style(-opacity) $tag"
2156	SendCmd "volume visible $style(-visible) $tag"
2157	SetColormap $dataobj $cname
2158	}
2159
2160	itcl::body Rappture::VtkVolumeViewer::IsValidObject { dataobj } {
2161	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2162	return 0
2163	}
2164	return 1
2165	}
2166
2167	# ----------------------------------------------------------------------
2168	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2169	#
2170	# Invoked automatically whenever the "legend" command comes in from
2171	# the rendering server. Indicates that binary image data with the
2172	# specified <size> will follow.
2173	# ----------------------------------------------------------------------
2174	itcl::body Rappture::VtkVolumeViewer::ReceiveLegend { colormap title vmin vmax size } {
2175	if { [isconnected] } {
2176	set bytes [ReceiveBytes $size]
2177	if { ![info exists _image(legend)] } {
2178	set _image(legend) [image create photo]
2179	}
2180	$_image(legend) configure -data $bytes
2181	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2182	if { [catch {DrawLegend} errs] != 0 } {
2183	puts stderr errs=$errs
2184	}
2185	}
2186	}
2187
2188	#
2189	# DrawLegend --
2190	#
2191	itcl::body Rappture::VtkVolumeViewer::DrawLegend {} {
2192	set fname $_curFldName
2193	set c $itk_component(view)
2194	set w [winfo width $c]
2195	set h [winfo height $c]
2196	set font "Arial 8"
2197	set lineht [font metrics $font -linespace]
2198
2199	if { !$_settings(-legendvisible) } {
2200	$c delete legend
2201	return
2202	}
2203
2204	if { [info exists _fields($fname)] } {
2205	foreach { title units } $_fields($fname) break
2206	if { $units != "" } {
2207	set title [format "%s (%s)" $title $units]
2208	}
2209	} else {
2210	set title $fname
2211	}
2212
2213	set x [expr $w - 2]
2214	if { [$c find withtag "legend"] == "" } {
2215	set y 2
2216	$c create text $x $y \
2217	-anchor ne \
2218	-fill $itk_option(-plotforeground) -tags "title legend" \
2219	-font $font
2220	incr y $lineht
2221	$c create text $x $y \
2222	-anchor ne \
2223	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2224	-font $font
2225	incr y $lineht
2226	$c create image $x $y \
2227	-anchor ne \
2228	-image $_image(legend) -tags "colormap legend"
2229	$c create text $x [expr {$h-2}] \
2230	-anchor se \
2231	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2232	-font $font
2233	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2234	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2235	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2236	}
2237	$c bind title <ButtonPress> [itcl::code $this Combo post]
2238	$c bind title <Enter> [itcl::code $this Combo activate]
2239	$c bind title <Leave> [itcl::code $this Combo deactivate]
2240	# Reset the item coordinates according the current size of the plot.
2241	$c itemconfigure title -text $title
2242	if { [info exists _limits($_curFldName)] } {
2243	foreach { vmin vmax } $_limits($_curFldName) break
2244	$c itemconfigure vmin -text [format %g $vmin]
2245	$c itemconfigure vmax -text [format %g $vmax]
2246	}
2247	set y 2
2248	$c coords title $x $y
2249	incr y $lineht
2250	$c coords vmax $x $y
2251	incr y $lineht
2252	$c coords colormap $x $y
2253	$c coords vmin $x [expr {$h - 2}]
2254	}
2255
2256	#
2257	# EnterLegend --
2258	#
2259	itcl::body Rappture::VtkVolumeViewer::EnterLegend { x y } {
2260	SetLegendTip $x $y
2261	}
2262
2263	#
2264	# MotionLegend --
2265	#
2266	itcl::body Rappture::VtkVolumeViewer::MotionLegend { x y } {
2267	Rappture::Tooltip::tooltip cancel
2268	set c $itk_component(view)
2269	SetLegendTip $x $y
2270	}
2271
2272	#
2273	# LeaveLegend --
2274	#
2275	itcl::body Rappture::VtkVolumeViewer::LeaveLegend { } {
2276	Rappture::Tooltip::tooltip cancel
2277	.rappturetooltip configure -icon ""
2278	}
2279
2280	#
2281	# SetLegendTip --
2282	#
2283	itcl::body Rappture::VtkVolumeViewer::SetLegendTip { x y } {
2284	set c $itk_component(view)
2285	set w [winfo width $c]
2286	set h [winfo height $c]
2287	set font "Arial 8"
2288	set lineht [font metrics $font -linespace]
2289
2290	set imgHeight [image height $_image(legend)]
2291	set coords [$c coords colormap]
2292	set imgX [expr $w - [image width $_image(legend)] - 2]
2293	set imgY [expr $y - 2 * ($lineht + 2)]
2294
2295	if { [info exists _fields($_title)] } {
2296	foreach { title units } $_fields($_title) break
2297	if { $units != "" } {
2298	set title [format "%s (%s)" $title $units]
2299	}
2300	} else {
2301	set title $_title
2302	}
2303	# Make a swatch of the selected color
2304	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2305	#puts stderr "out of range: $imgY"
2306	return
2307	}
2308	if { ![info exists _image(swatch)] } {
2309	set _image(swatch) [image create photo -width 24 -height 24]
2310	}
2311	set color [eval format "\#%02x%02x%02x" $pixel]
2312	$_image(swatch) put black -to 0 0 23 23
2313	$_image(swatch) put $color -to 1 1 22 22
2314	.rappturetooltip configure -icon $_image(swatch)
2315
2316	# Compute the value of the point
2317	if { [info exists _limits($_curFldName)] } {
2318	foreach { vmin vmax } $_limits($_curFldName) break
2319	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2320	set value [expr $t * ($vmax - $vmin) + $vmin]
2321	} else {
2322	set value 0.0
2323	}
2324	set tipx [expr $x + 15]
2325	set tipy [expr $y - 5]
2326	Rappture::Tooltip::text $c "$title $value"
2327	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2328	}
2329
2330	# ----------------------------------------------------------------------
2331	# USAGE: Slice move x\|y\|z <newval>
2332	#
2333	# Called automatically when the user drags the slider to move the
2334	# cut plane that slices 3D data. Gets the current value from the
2335	# slider and moves the cut plane to the appropriate point in the
2336	# data set.
2337	# ----------------------------------------------------------------------
2338	itcl::body Rappture::VtkVolumeViewer::Slice {option args} {
2339	switch -- $option {
2340	"move" {
2341	set axis [lindex $args 0]
2342	set newval [lindex $args 1]
2343	if {[llength $args] != 2} {
2344	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2345	}
2346	set newpos [expr {0.01*$newval}]
2347	SendCmd "$_cutplaneCmd slice $axis $newpos"
2348	}
2349	"tooltip" {
2350	set axis [lindex $args 0]
2351	set val [$itk_component(${axis}CutScale) get]
2352	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2353	}
2354	default {
2355	error "bad option \"$option\": should be axis, move, or tooltip"
2356	}
2357	}
2358	}
2359
2360	# ----------------------------------------------------------------------
2361	# USAGE: _dropdown post
2362	# USAGE: _dropdown unpost
2363	# USAGE: _dropdown select
2364	#
2365	# Used internally to handle the dropdown list for this combobox. The
2366	# post/unpost options are invoked when the list is posted or unposted
2367	# to manage the relief of the controlling button. The select option
2368	# is invoked whenever there is a selection from the list, to assign
2369	# the value back to the gauge.
2370	# ----------------------------------------------------------------------
2371	itcl::body Rappture::VtkVolumeViewer::Combo {option} {
2372	set c $itk_component(view)
2373	switch -- $option {
2374	post {
2375	foreach { x1 y1 x2 y2 } [$c bbox title] break
2376	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2377	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2378	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2379	tk_popup $itk_component(fieldmenu) $x $y
2380	}
2381	activate {
2382	$c itemconfigure title -fill red
2383	}
2384	deactivate {
2385	$c itemconfigure title -fill $itk_option(-plotforeground)
2386	}
2387	invoke {
2388	$itk_component(field) value $_curFldLabel
2389	AdjustSetting -field
2390	}
2391	default {
2392	error "bad option \"$option\": should be post, unpost, select"
2393	}
2394	}
2395	}
2396
2397	itcl::body Rappture::VtkVolumeViewer::SetOrientation { side } {
2398	array set positions {
2399	front "1 0 0 0"
2400	back "0 0 1 0"
2401	left "0.707107 0 -0.707107 0"
2402	right "0.707107 0 0.707107 0"
2403	top "0.707107 -0.707107 0 0"
2404	bottom "0.707107 0.707107 0 0"
2405	}
2406	foreach name { -qw -qx -qy -qz } value $positions($side) {
2407	set _view($name) $value
2408	}
2409	set q [ViewToQuaternion]
2410	$_arcball quaternion $q
2411	SendCmd "camera orient $q"
2412	SendCmd "camera reset"
2413	set _view(-xpan) 0
2414	set _view(-ypan) 0
2415	set _view(-zoom) 1.0
2416	}
2417
2418	#
2419	# GetDatasetsWithComponent --
2420	#
2421	# Returns a list of all the datasets (known by the combination of
2422	# their data object and component name) that match the given
2423	# component name. For example, this is used where we want to change
2424	# the settings of volumes that have the current component.
2425	#
2426	itcl::body Rappture::VtkVolumeViewer::GetDatasetsWithComponent { cname } {
2427	if { ![info exists _volcomponents($cname)] } {
2428	return ""
2429	}
2430	return $_volcomponents($cname)
2431	}

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