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source: trunk/gui/scripts/vtkvolumeviewer.tcl @ 5347

Last change on this file since 5347 was 5347, checked in by ldelgass, 9 years ago
set _downloadPopup to private access
File size: 99.6 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkvolumeviewer - Vtk volume viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkVolumeViewer.width 4i widgetDefault
19	option add VtkVolumeViewercursor crosshair widgetDefault
20	option add *VtkVolumeViewer.height 4i widgetDefault
21	option add *VtkVolumeViewer.foreground black widgetDefault
22	option add *VtkVolumeViewer.controlBackground gray widgetDefault
23	option add *VtkVolumeViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkVolumeViewer.plotBackground black widgetDefault
25	option add *VtkVolumeViewer.plotForeground white widgetDefault
26	option add *VtkVolumeViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkVolumeViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkVolumeViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkVolumeViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63	public method updateTransferFunctions {}
64
65	private method AddNewMarker { x y }
66	private method BuildVolumeComponents {}
67	private method ComputeAlphamap { cname }
68	private method ComputeTransferFunction { cname }
69	private method GetColormap { cname color }
70	private method GetDatasetsWithComponent { cname }
71	private method HideAllMarkers {}
72	private method InitComponentSettings { cname }
73	private method ParseLevelsOption { cname levels }
74	private method ParseMarkersOption { cname markers }
75	private method RemoveMarker { x y }
76	private method ResetColormap { cname color }
77	private method SendTransferFunctions {}
78	private method SetInitialTransferFunction { dataobj cname }
79	private method SwitchComponent { cname }
80
81	private variable _alphamap
82	private variable _current ""; # Currently selected component
83	private variable _volcomponents ; # Array of components found
84	private variable _componentsList ; # List of component names
85	private variable _cname2transferFunction
86	private variable _cname2defaultcolormap
87
88	private variable _parsedFunction
89	private variable _transferFunctionEditors
90
91	# The following methods are only used by this class.
92	private method AdjustSetting {what {value ""}}
93	private method BuildAxisTab {}
94	private method BuildCameraTab {}
95	private method BuildCutplaneTab {}
96	private method BuildDownloadPopup { widget command }
97	private method BuildViewTab {}
98	private method BuildVolumeTab {}
99	private method Combo { option }
100	private method Connect {}
101	private method CurrentDatasets {args}
102	private method Disconnect {}
103	private method DoResize {}
104	private method DoRotate {}
105	private method DrawLegend {}
106	private method EnterLegend { x y }
107	private method EventuallyResize { w h }
108	private method EventuallyRequestLegend {}
109	private method EventuallyRotate { q }
110	private method EventuallySetCutplane { axis args }
111	private method GetImage { args }
112	private method GetVtkData { args }
113	private method InitSettings { args }
114	private method IsValidObject { dataobj }
115	private method LeaveLegend {}
116	private method MotionLegend { x y }
117	private method Pan {option x y}
118	private method PanCamera {}
119	private method Pick {x y}
120	private method QuaternionToView { q } {
121	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
122	}
123	private method Rebuild {}
124	private method ReceiveDataset { args }
125	private method ReceiveImage { args }
126	private method ReceiveLegend { colormap title vmin vmax size }
127	private method RequestLegend {}
128	private method Rotate {option x y}
129	private method SetLegendTip { x y }
130	private method SetObjectStyle { dataobj comp }
131	private method SetOrientation { side }
132	private method Slice {option args}
133	private method ViewToQuaternion {} {
134	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
135	}
136	private method Zoom {option}
137
138	private variable _arcball ""
139	private variable _dlist "" ; # list of data objects
140	private variable _obj2ovride ; # maps dataobj => style override
141	private variable _datasets ; # contains all the dataobj-component
142	; # datasets in the server
143	private variable _colormaps ; # contains all the colormaps
144	; # in the server.
145	private variable _dataset2style ;# maps dataobj-component to transfunc
146
147	private variable _click ; # info used for rotate operations
148	private variable _limits ; # autoscale min/max for all axes
149	private variable _view ; # view params for 3D view
150	private variable _settings
151	private variable _reset 1; # Connection to server has been reset.
152
153	private variable _first "" ; # This is the topmost dataset.
154	private variable _start 0
155	private variable _title ""
156
157	private common _downloadPopup; # download options from popup
158	private common _hardcopy
159	private variable _width 0
160	private variable _height 0
161	private variable _resizePending 0
162	private variable _rotatePending 0
163	private variable _cutplanePending 0
164	private variable _legendPending 0
165	private variable _fields
166	private variable _curFldName ""
167	private variable _curFldLabel ""
168	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
169	private variable _cutplaneCmd "imgcutplane"
170	private variable _allowMultiComponent 0
171	}
172
173	itk::usual VtkVolumeViewer {
174	keep -background -foreground -cursor -font
175	keep -plotbackground -plotforeground
176	}
177
178	# ----------------------------------------------------------------------
179	# CONSTRUCTOR
180	# ----------------------------------------------------------------------
181	itcl::body Rappture::VtkVolumeViewer::constructor {hostlist args} {
182	set _serverType "vtkvis"
183
184	EnableWaitDialog 900
185
186	# Rebuild event
187	$_dispatcher register !rebuild
188	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
189
190	# Resize event
191	$_dispatcher register !resize
192	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
193
194	# Rotate event
195	$_dispatcher register !rotate
196	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
197
198	# Legend event
199	$_dispatcher register !legend
200	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
201
202	# X-Cutplane event
203	$_dispatcher register !xcutplane
204	$_dispatcher dispatch $this !xcutplane \
205	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
206
207	# Y-Cutplane event
208	$_dispatcher register !ycutplane
209	$_dispatcher dispatch $this !ycutplane \
210	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
211
212	# Z-Cutplane event
213	$_dispatcher register !zcutplane
214	$_dispatcher dispatch $this !zcutplane \
215	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
216
217	#
218	# Populate parser with commands handle incoming requests
219	#
220	$_parser alias image [itcl::code $this ReceiveImage]
221	$_parser alias dataset [itcl::code $this ReceiveDataset]
222	$_parser alias legend [itcl::code $this ReceiveLegend]
223
224	# Initialize the view to some default parameters.
225	array set _view {
226	-ortho 0
227	-qw 0.853553
228	-qx -0.353553
229	-qy 0.353553
230	-qz 0.146447
231	-xpan 0
232	-ypan 0
233	-zoom 1.0
234	}
235	set _arcball [blt::arcball create 100 100]
236	$_arcball quaternion [ViewToQuaternion]
237
238	array set _settings {
239	-axesvisible 1
240	-axisflymode static
241	-axislabels 1
242	-axisminorticks 1
243	-background black
244	-color "default"
245	-cutplanelighting 1
246	-cutplaneopacity 100
247	-cutplanesvisible 0
248	-legendvisible 1
249	-volumeambient 40
250	-volumeblendmode composite
251	-volumediffuse 60
252	-volumelighting 1
253	-volumeopacity 50
254	-volumeoutline 0
255	-volumequality 80
256	-volumespecularexponent 90
257	-volumespecularlevel 30
258	-volumethickness 350
259	-volumevisible 1
260	-xcutplaneposition 50
261	-xcutplanevisible 1
262	-xgrid 0
263	-ycutplaneposition 50
264	-ycutplanevisible 1
265	-ygrid 0
266	-zcutplaneposition 50
267	-zcutplanevisible 1
268	-zgrid 0
269	}
270
271	itk_component add view {
272	canvas $itk_component(plotarea).view \
273	-highlightthickness 0 -borderwidth 0
274	} {
275	usual
276	ignore -highlightthickness -borderwidth -background
277	}
278
279	itk_component add fieldmenu {
280	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
281	-tearoff no
282	} {
283	usual
284	ignore -background -foreground -relief -tearoff
285	}
286	set c $itk_component(view)
287	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
288	bind $c <4> [itcl::code $this Zoom in 0.25]
289	bind $c <5> [itcl::code $this Zoom out 0.25]
290	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
291	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
292	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
293	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
294	bind $c <Enter> "focus %W"
295	bind $c <Control-F1> [itcl::code $this ToggleConsole]
296
297	# Fixes the scrollregion in case we go off screen
298	$c configure -scrollregion [$c bbox all]
299
300	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
301	set _map(cwidth) -1
302	set _map(cheight) -1
303	set _map(zoom) 1.0
304	set _map(original) ""
305
306	set f [$itk_component(main) component controls]
307	itk_component add reset {
308	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
309	-highlightthickness 0 \
310	-image [Rappture::icon reset-view] \
311	-command [itcl::code $this Zoom reset]
312	} {
313	usual
314	ignore -highlightthickness
315	}
316	pack $itk_component(reset) -side top -padx 2 -pady 2
317	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
318
319	itk_component add zoomin {
320	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
321	-highlightthickness 0 \
322	-image [Rappture::icon zoom-in] \
323	-command [itcl::code $this Zoom in]
324	} {
325	usual
326	ignore -highlightthickness
327	}
328	pack $itk_component(zoomin) -side top -padx 2 -pady 2
329	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
330
331	itk_component add zoomout {
332	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
333	-highlightthickness 0 \
334	-image [Rappture::icon zoom-out] \
335	-command [itcl::code $this Zoom out]
336	} {
337	usual
338	ignore -highlightthickness
339	}
340	pack $itk_component(zoomout) -side top -padx 2 -pady 2
341	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
342
343	itk_component add volume {
344	Rappture::PushButton $f.volume \
345	-onimage [Rappture::icon volume-on] \
346	-offimage [Rappture::icon volume-off] \
347	-variable [itcl::scope _settings(-volumevisible)] \
348	-command [itcl::code $this AdjustSetting -volumevisible]
349	}
350	$itk_component(volume) select
351	Rappture::Tooltip::for $itk_component(volume) \
352	"Don't display the volume"
353	pack $itk_component(volume) -padx 2 -pady 2
354
355	itk_component add cutplane {
356	Rappture::PushButton $f.cutplane \
357	-onimage [Rappture::icon cutbutton] \
358	-offimage [Rappture::icon cutbutton] \
359	-variable [itcl::scope _settings(-cutplanesvisible)] \
360	-command [itcl::code $this AdjustSetting -cutplanesvisible]
361	}
362	Rappture::Tooltip::for $itk_component(cutplane) \
363	"Show/Hide cutplanes"
364	pack $itk_component(cutplane) -padx 2 -pady 2
365
366	if { [catch {
367	BuildViewTab
368	BuildVolumeTab
369	BuildCutplaneTab
370	BuildAxisTab
371	BuildCameraTab
372	} errs] != 0 } {
373	puts stderr errs=$errs
374	}
375
376	# Legend
377	set _image(legend) [image create photo]
378	itk_component add legend {
379	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
380	} {
381	usual
382	ignore -highlightthickness
383	rename -background -plotbackground plotBackground Background
384	}
385	bind $itk_component(legend) <KeyPress-Delete> \
386	[itcl::code $this RemoveMarker %x %y]
387	bind $itk_component(legend) <Enter> \
388	[list focus $itk_component(legend)]
389
390	# Hack around the Tk panewindow. The problem is that the requested
391	# size of the 3d view isn't set until an image is retrieved from
392	# the server. So the panewindow uses the tiny size.
393	set w 10000
394	pack forget $itk_component(view)
395	blt::table $itk_component(plotarea) \
396	0,0 $itk_component(view) -fill both -reqwidth $w \
397	1,0 $itk_component(legend) -fill x
398	blt::table configure $itk_component(plotarea) r1 -resize none
399
400	# Bindings for rotation via mouse
401	bind $itk_component(view) <ButtonPress-1> \
402	[itcl::code $this Rotate click %x %y]
403	bind $itk_component(view) <B1-Motion> \
404	[itcl::code $this Rotate drag %x %y]
405	bind $itk_component(view) <ButtonRelease-1> \
406	[itcl::code $this Rotate release %x %y]
407
408	# Bindings for panning via mouse
409	bind $itk_component(view) <ButtonPress-2> \
410	[itcl::code $this Pan click %x %y]
411	bind $itk_component(view) <B2-Motion> \
412	[itcl::code $this Pan drag %x %y]
413	bind $itk_component(view) <ButtonRelease-2> \
414	[itcl::code $this Pan release %x %y]
415
416	#bind $itk_component(view) <ButtonRelease-3> \
417	# [itcl::code $this Pick %x %y]
418
419	# Bindings for panning via keyboard
420	bind $itk_component(view) <KeyPress-Left> \
421	[itcl::code $this Pan set -10 0]
422	bind $itk_component(view) <KeyPress-Right> \
423	[itcl::code $this Pan set 10 0]
424	bind $itk_component(view) <KeyPress-Up> \
425	[itcl::code $this Pan set 0 -10]
426	bind $itk_component(view) <KeyPress-Down> \
427	[itcl::code $this Pan set 0 10]
428	bind $itk_component(view) <Shift-KeyPress-Left> \
429	[itcl::code $this Pan set -2 0]
430	bind $itk_component(view) <Shift-KeyPress-Right> \
431	[itcl::code $this Pan set 2 0]
432	bind $itk_component(view) <Shift-KeyPress-Up> \
433	[itcl::code $this Pan set 0 -2]
434	bind $itk_component(view) <Shift-KeyPress-Down> \
435	[itcl::code $this Pan set 0 2]
436
437	# Bindings for zoom via keyboard
438	bind $itk_component(view) <KeyPress-Prior> \
439	[itcl::code $this Zoom out]
440	bind $itk_component(view) <KeyPress-Next> \
441	[itcl::code $this Zoom in]
442
443	bind $itk_component(view) <Enter> "focus $itk_component(view)"
444
445	if {[string equal "x11" [tk windowingsystem]]} {
446	# Bindings for zoom via mouse
447	bind $itk_component(view) <4> [itcl::code $this Zoom out]
448	bind $itk_component(view) <5> [itcl::code $this Zoom in]
449	}
450
451	set _image(download) [image create photo]
452
453	eval itk_initialize $args
454	Connect
455	}
456
457	# ----------------------------------------------------------------------
458	# DESTRUCTOR
459	# ----------------------------------------------------------------------
460	itcl::body Rappture::VtkVolumeViewer::destructor {} {
461	Disconnect
462	image delete $_image(plot)
463	image delete $_image(download)
464	catch { blt::arcball destroy $_arcball }
465	}
466
467	itcl::body Rappture::VtkVolumeViewer::DoResize {} {
468	if { $_width < 2 } {
469	set _width 500
470	}
471	if { $_height < 2 } {
472	set _height 500
473	}
474	set _start [clock clicks -milliseconds]
475	SendCmd "screen size $_width $_height"
476
477	EventuallyRequestLegend
478	set _resizePending 0
479	}
480
481	itcl::body Rappture::VtkVolumeViewer::DoRotate {} {
482	SendCmd "camera orient [ViewToQuaternion]"
483	set _rotatePending 0
484	}
485
486	itcl::body Rappture::VtkVolumeViewer::EventuallyResize { w h } {
487	set _width $w
488	set _height $h
489	$_arcball resize $w $h
490	if { !$_resizePending } {
491	set _resizePending 1
492	$_dispatcher event -after 400 !resize
493	}
494	}
495
496	itcl::body Rappture::VtkVolumeViewer::EventuallyRequestLegend {} {
497	if { !$_legendPending } {
498	set _legendPending 1
499	$_dispatcher event -idle !legend
500	}
501	}
502
503	set rotate_delay 100
504
505	itcl::body Rappture::VtkVolumeViewer::EventuallyRotate { q } {
506	QuaternionToView $q
507	if { !$_rotatePending } {
508	set _rotatePending 1
509	global rotate_delay
510	$_dispatcher event -after $rotate_delay !rotate
511	}
512	}
513
514	itcl::body Rappture::VtkVolumeViewer::EventuallySetCutplane { axis args } {
515	if { !$_cutplanePending } {
516	set _cutplanePending 1
517	$_dispatcher event -after 100 !${axis}cutplane
518	}
519	}
520
521	# ----------------------------------------------------------------------
522	# USAGE: add <dataobj> ?<settings>?
523	#
524	# Clients use this to add a data object to the plot. The optional
525	# <settings> are used to configure the plot. Allowed settings are
526	# -color, -brightness, -width, -linestyle, and -raise.
527	# ----------------------------------------------------------------------
528	itcl::body Rappture::VtkVolumeViewer::add {dataobj {settings ""}} {
529	if { ![IsValidObject $dataobj] } {
530	return; # Ignore invalid objects.
531	}
532	array set params {
533	-color auto
534	-width 1
535	-linestyle solid
536	-brightness 0
537	-raise 0
538	-description ""
539	-param ""
540	-type ""
541	}
542	array set params $settings
543	set params(-description) ""
544	set params(-param) ""
545	array set params $settings
546
547	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
548	# can't handle -autocolors yet
549	set params(-color) black
550	}
551	set pos [lsearch -exact $_dlist $dataobj]
552	if {$pos < 0} {
553	lappend _dlist $dataobj
554	}
555	set _obj2ovride($dataobj-color) $params(-color)
556	set _obj2ovride($dataobj-width) $params(-width)
557	set _obj2ovride($dataobj-raise) $params(-raise)
558	$_dispatcher event -idle !rebuild
559	}
560
561
562	# ----------------------------------------------------------------------
563	# USAGE: delete ?<dataobj1> <dataobj2> ...?
564	#
565	# Clients use this to delete a dataobj from the plot. If no dataobjs
566	# are specified, then all dataobjs are deleted. No data objects are
567	# deleted. They are only removed from the display list.
568	#
569	# ----------------------------------------------------------------------
570	itcl::body Rappture::VtkVolumeViewer::delete {args} {
571	if { [llength $args] == 0} {
572	set args $_dlist
573	}
574	# Delete all specified dataobjs
575	set changed 0
576	foreach dataobj $args {
577	set pos [lsearch -exact $_dlist $dataobj]
578	if { $pos < 0 } {
579	continue; # Don't know anything about it.
580	}
581	# Remove it from the dataobj list.
582	set _dlist [lreplace $_dlist $pos $pos]
583	array unset _obj2ovride $dataobj-*
584	array unset _settings $dataobj-*
585	set changed 1
586	}
587	# If anything changed, then rebuild the plot
588	if { $changed } {
589	$_dispatcher event -idle !rebuild
590	}
591	}
592
593	# ----------------------------------------------------------------------
594	# USAGE: get ?-objects?
595	# USAGE: get ?-visible?
596	# USAGE: get ?-image view?
597	#
598	# Clients use this to query the list of objects being plotted, in
599	# order from bottom to top of this result. The optional "-image"
600	# flag can also request the internal images being shown.
601	# ----------------------------------------------------------------------
602	itcl::body Rappture::VtkVolumeViewer::get {args} {
603	if {[llength $args] == 0} {
604	set args "-objects"
605	}
606
607	set op [lindex $args 0]
608	switch -- $op {
609	"-objects" {
610	# put the dataobj list in order according to -raise options
611	set dlist {}
612	foreach dataobj $_dlist {
613	if { ![IsValidObject $dataobj] } {
614	continue
615	}
616	if {[info exists _obj2ovride($dataobj-raise)] &&
617	$_obj2ovride($dataobj-raise)} {
618	set dlist [linsert $dlist 0 $dataobj]
619	} else {
620	lappend dlist $dataobj
621	}
622	}
623	return $dlist
624	}
625	"-visible" {
626	set dlist {}
627	foreach dataobj $_dlist {
628	if { ![IsValidObject $dataobj] } {
629	continue
630	}
631	if { ![info exists _obj2ovride($dataobj-raise)] } {
632	# No setting indicates that the object isn't visible.
633	continue
634	}
635	# Otherwise use the -raise parameter to put the object to
636	# the front of the list.
637	if { $_obj2ovride($dataobj-raise) } {
638	set dlist [linsert $dlist 0 $dataobj]
639	} else {
640	lappend dlist $dataobj
641	}
642	}
643	return $dlist
644	}
645	-image {
646	if {[llength $args] != 2} {
647	error "wrong # args: should be \"get -image view\""
648	}
649	switch -- [lindex $args end] {
650	view {
651	return $_image(plot)
652	}
653	default {
654	error "bad image name \"[lindex $args end]\": should be view"
655	}
656	}
657	}
658	default {
659	error "bad option \"$op\": should be -objects or -image"
660	}
661	}
662	}
663
664	# ----------------------------------------------------------------------
665	# USAGE: scale ?<data1> <data2> ...?
666	#
667	# Sets the default limits for the overall plot according to the
668	# limits of the data for all of the given <data> objects. This
669	# accounts for all objects--even those not showing on the screen.
670	# Because of this, the limits are appropriate for all objects as
671	# the user scans through data in the ResultSet viewer.
672	# ----------------------------------------------------------------------
673	itcl::body Rappture::VtkVolumeViewer::scale {args} {
674	array unset _limits
675	array unset _volcomponents
676	set _componentsList ""
677
678	foreach dataobj $args {
679	if { ![$dataobj isvalid] } {
680	continue; # Object doesn't contain valid data.
681	}
682	# Determine limits for each axis.
683	foreach axis { x y z } {
684	set lim [$dataobj limits $axis]
685	if { ![info exists _limits($axis)] } {
686	set _limits($axis) $lim
687	continue
688	}
689	foreach {min max} $lim break
690	foreach {amin amax} $_limits($axis) break
691	if { $amin > $min } {
692	set amin $min
693	}
694	if { $amax < $max } {
695	set amax $max
696	}
697	set _limits($axis) [list $amin $amax]
698	}
699	# Determine limits for each field.
700	foreach { fname lim } [$dataobj fieldlimits] {
701	if { ![info exists _limits($fname)] } {
702	set _limits($fname) $lim
703	continue
704	}
705	foreach {min max} $lim break
706	foreach {fmin fmax} $_limits($fname) break
707	if { $fmin > $min } {
708	set fmin $min
709	}
710	if { $fmax < $max } {
711	set fmax $max
712	}
713	set _limits($fname) [list $fmin $fmax]
714	}
715	# Get limits for each component.
716	foreach cname [$dataobj components] {
717	if { ![info exists _volcomponents($cname)] } {
718	lappend _componentsList $cname
719	}
720	lappend _volcomponents($cname) $dataobj-$cname
721	array unset limits
722	array set limits [$dataobj valueLimits $cname]
723	if { ![info exists _limits($cname)] } {
724	set _limits($cname) $limits(v)
725	continue
726	}
727	foreach {min max} $limits(v) break
728	foreach {vmin vmax} $_limits($cname) break
729	if { $vmin > $min } {
730	set vmin $min
731	}
732	if { $vmax < $max } {
733	set vmax $max
734	}
735	set _limits($cname) [list $vmin $vmax]
736	}
737	}
738	BuildVolumeComponents
739	updateTransferFunctions
740	}
741
742	# ----------------------------------------------------------------------
743	# USAGE: download coming
744	# USAGE: download controls <downloadCommand>
745	# USAGE: download now
746	#
747	# Clients use this method to create a downloadable representation
748	# of the plot. Returns a list of the form {ext string}, where
749	# "ext" is the file extension (indicating the type of data) and
750	# "string" is the data itself.
751	# ----------------------------------------------------------------------
752	itcl::body Rappture::VtkVolumeViewer::download {option args} {
753	switch $option {
754	coming {
755	if {[catch {
756	blt::winop snap $itk_component(plotarea) $_image(download)
757	}]} {
758	$_image(download) configure -width 1 -height 1
759	$_image(download) put #000000
760	}
761	}
762	controls {
763	set popup .vtkviewerdownload
764	if { ![winfo exists .vtkviewerdownload] } {
765	set inner [BuildDownloadPopup $popup [lindex $args 0]]
766	} else {
767	set inner [$popup component inner]
768	}
769	set _downloadPopup(image_controls) $inner.image_frame
770	set num [llength [get]]
771	set num [expr {($num == 1) ? "1 result" : "$num results"}]
772	set word [Rappture::filexfer::label downloadWord]
773	$inner.summary configure -text "$word $num in the following format:"
774	update idletasks ;# Fix initial sizes
775	return $popup
776	}
777	now {
778	set popup .vtkviewerdownload
779	if {[winfo exists .vtkviewerdownload]} {
780	$popup deactivate
781	}
782	switch -- $_downloadPopup(format) {
783	"image" {
784	return [$this GetImage [lindex $args 0]]
785	}
786	"vtk" {
787	return [$this GetVtkData [lindex $args 0]]
788	}
789	}
790	return ""
791	}
792	default {
793	error "bad option \"$option\": should be coming, controls, now"
794	}
795	}
796	}
797
798	# ----------------------------------------------------------------------
799	# USAGE: Connect ?<host:port>,<host:port>...?
800	#
801	# Clients use this method to establish a connection to a new
802	# server, or to reestablish a connection to the previous server.
803	# Any existing connection is automatically closed.
804	# ----------------------------------------------------------------------
805	itcl::body Rappture::VtkVolumeViewer::Connect {} {
806	set _hosts [GetServerList "vtkvis"]
807	if { "" == $_hosts } {
808	return 0
809	}
810	set _reset 1
811	set result [VisViewer::Connect $_hosts]
812	if { $result } {
813	if { $_reportClientInfo } {
814	# Tell the server the viewer, hub, user and session.
815	# Do this immediately on connect before buffering any commands
816	global env
817
818	set info {}
819	set user "???"
820	if { [info exists env(USER)] } {
821	set user $env(USER)
822	}
823	set session "???"
824	if { [info exists env(SESSION)] } {
825	set session $env(SESSION)
826	}
827	lappend info "version" "$Rappture::version"
828	lappend info "build" "$Rappture::build"
829	lappend info "svnurl" "$Rappture::svnurl"
830	lappend info "installdir" "$Rappture::installdir"
831	lappend info "hub" [exec hostname]
832	lappend info "client" "vtkvolumeviewer"
833	lappend info "user" $user
834	lappend info "session" $session
835	SendCmd "clientinfo [list $info]"
836	}
837
838	set w [winfo width $itk_component(view)]
839	set h [winfo height $itk_component(view)]
840	EventuallyResize $w $h
841	}
842	return $result
843	}
844
845	#
846	# isconnected --
847	#
848	# Indicates if we are currently connected to the visualization server.
849	#
850	itcl::body Rappture::VtkVolumeViewer::isconnected {} {
851	return [VisViewer::IsConnected]
852	}
853
854	#
855	# disconnect --
856	#
857	itcl::body Rappture::VtkVolumeViewer::disconnect {} {
858	Disconnect
859	}
860
861	#
862	# Disconnect --
863	#
864	# Clients use this method to disconnect from the current rendering
865	# server.
866	#
867	itcl::body Rappture::VtkVolumeViewer::Disconnect {} {
868	VisViewer::Disconnect
869
870	$_dispatcher cancel !rebuild
871	$_dispatcher cancel !resize
872	$_dispatcher cancel !rotate
873	$_dispatcher cancel !xcutplane
874	$_dispatcher cancel !ycutplane
875	$_dispatcher cancel !zcutplane
876	$_dispatcher cancel !legend
877	# disconnected -- no more data sitting on server
878	array unset _datasets
879	array unset _colormaps
880	array unset _dataset2style
881
882	array unset _parsedFunction
883	array unset _cname2transferFunction
884
885	set _resizePending 0
886	set _rotatePending 0
887	set _cutplanePending 0
888	set _legendPending 0
889	}
890
891	# ----------------------------------------------------------------------
892	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
893	#
894	# Invoked automatically whenever the "image" command comes in from
895	# the rendering server. Indicates that binary image data with the
896	# specified <size> will follow.
897	# ----------------------------------------------------------------------
898	itcl::body Rappture::VtkVolumeViewer::ReceiveImage { args } {
899	array set info {
900	-token "???"
901	-bytes 0
902	-type image
903	}
904	array set info $args
905	set bytes [ReceiveBytes $info(-bytes)]
906	StopWaiting
907	if { $info(-type) == "image" } {
908	if 0 {
909	set f [open "last.ppm" "w"]
910	fconfigure $f -encoding binary
911	puts -nonewline $f $bytes
912	close $f
913	}
914	$_image(plot) configure -data $bytes
915	#puts stderr "[clock format [clock seconds]]: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
916	if { $_start > 0 } {
917	set finish [clock clicks -milliseconds]
918	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
919	set _start 0
920	}
921	} elseif { $info(type) == "print" } {
922	set tag $this-print-$info(-token)
923	set _hardcopy($tag) $bytes
924	}
925	}
926
927	#
928	# ReceiveDataset --
929	#
930	itcl::body Rappture::VtkVolumeViewer::ReceiveDataset { args } {
931	if { ![isconnected] } {
932	return
933	}
934	set option [lindex $args 0]
935	switch -- $option {
936	"scalar" {
937	set option [lindex $args 1]
938	switch -- $option {
939	"world" {
940	foreach { x y z value tag } [lrange $args 2 end] break
941	}
942	"pixel" {
943	foreach { x y value tag } [lrange $args 2 end] break
944	}
945	}
946	}
947	"vector" {
948	set option [lindex $args 1]
949	switch -- $option {
950	"world" {
951	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
952	}
953	"pixel" {
954	foreach { x y vx vy vz tag } [lrange $args 2 end] break
955	}
956	}
957	}
958	"names" {
959	foreach { name } [lindex $args 1] {
960	#puts stderr "Dataset: $name"
961	}
962	}
963	default {
964	error "unknown dataset option \"$option\" from server"
965	}
966	}
967	}
968
969	# ----------------------------------------------------------------------
970	# USAGE: Rebuild
971	#
972	# Called automatically whenever something changes that affects the
973	# data in the widget. Clears any existing data and rebuilds the
974	# widget to display new data.
975	# ----------------------------------------------------------------------
976	itcl::body Rappture::VtkVolumeViewer::Rebuild {} {
977	set w [winfo width $itk_component(view)]
978	set h [winfo height $itk_component(view)]
979	if { $w < 2 \|\| $h < 2 } {
980	update
981	$_dispatcher event -idle !rebuild
982	return
983	}
984
985	# Turn on buffering of commands to the server. We don't want to
986	# be preempted by a server disconnect/reconnect (which automatically
987	# generates a new call to Rebuild).
988	StartBufferingCommands
989
990	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
991	set _width $w
992	set _height $h
993	$_arcball resize $w $h
994	DoResize
995	}
996	if { $_reset } {
997	#
998	# Reset the camera and other view parameters
999	#
1000	$_arcball quaternion [ViewToQuaternion]
1001	if {$_view(-ortho)} {
1002	SendCmd "camera mode ortho"
1003	} else {
1004	SendCmd "camera mode persp"
1005	}
1006	DoRotate
1007	PanCamera
1008	set _first ""
1009	InitSettings -background \
1010	-xgrid -ygrid -zgrid -axisflymode \
1011	-axesvisible -axislabels -axisminorticks
1012	StopBufferingCommands
1013	SendCmd "imgflush"
1014	StartBufferingCommands
1015	}
1016	set _first ""
1017
1018	# No volumes are active (i.e. in the working set of displayed volumes).
1019	# A volume is always invisible if it's not in the working set. A
1020	# volume in the working set may be visible/invisible depending upon the
1021	# global visibility value.
1022	SendCmd "dataset visible 0"
1023	foreach dataobj [get -objects] {
1024	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
1025	set _first $dataobj
1026	}
1027	foreach comp [$dataobj components] {
1028	set tag $dataobj-$comp
1029	if { ![info exists _datasets($tag)] } {
1030	set bytes [$dataobj vtkdata $comp]
1031	if 0 {
1032	set f [open /tmp/vtkvolume.vtk "w"]
1033	fconfigure $f -translation binary -encoding binary
1034	puts -nonewline $f $bytes
1035	close $f
1036	}
1037	set length [string length $bytes]
1038	if { $_reportClientInfo } {
1039	set info {}
1040	lappend info "tool_id" [$dataobj hints toolid]
1041	lappend info "tool_name" [$dataobj hints toolname]
1042	lappend info "tool_title" [$dataobj hints tooltitle]
1043	lappend info "tool_command" [$dataobj hints toolcommand]
1044	lappend info "tool_revision" [$dataobj hints toolrevision]
1045	lappend info "dataset_label" [$dataobj hints label]
1046	lappend info "dataset_size" $length
1047	lappend info "dataset_tag" $tag
1048	SendCmd "clientinfo [list $info]"
1049	}
1050	SendCmd "dataset add $tag data follows $length"
1051	SendData $bytes
1052	set _datasets($tag) 1
1053	SetObjectStyle $dataobj $comp
1054	}
1055	if { [info exists _obj2ovride($dataobj-raise)] } {
1056	SendCmd "volume visible 1 $tag"
1057	}
1058	break
1059	}
1060	}
1061	if {"" != $_first} {
1062	set location [$_first hints camera]
1063	if { $location != "" } {
1064	array set view $location
1065	}
1066
1067	foreach axis { x y z } {
1068	set label [$_first hints ${axis}label]
1069	if { $label != "" } {
1070	SendCmd [list axis name $axis $label]
1071	}
1072	set units [$_first hints ${axis}units]
1073	if { $units != "" } {
1074	SendCmd [list axis units $axis $units]
1075	}
1076	}
1077	$itk_component(field) choices delete 0 end
1078	$itk_component(fieldmenu) delete 0 end
1079	array unset _fields
1080	set _curFldName ""
1081	foreach cname [$_first components] {
1082	foreach fname [$_first fieldnames $cname] {
1083	if { [info exists _fields($fname)] } {
1084	continue
1085	}
1086	foreach { label units components } \
1087	[$_first fieldinfo $fname] break
1088	# Only scalar fields are valid
1089	if {$_allowMultiComponent \|\| $components == 1} {
1090	$itk_component(field) choices insert end "$fname" "$label"
1091	$itk_component(fieldmenu) add radiobutton -label "$label" \
1092	-value $label -variable [itcl::scope _curFldLabel] \
1093	-selectcolor red \
1094	-activebackground $itk_option(-plotbackground) \
1095	-activeforeground $itk_option(-plotforeground) \
1096	-font "Arial 8" \
1097	-command [itcl::code $this Combo invoke]
1098	set _fields($fname) [list $label $units $components]
1099	if { $_curFldName == "" } {
1100	set _curFldName $fname
1101	set _curFldLabel $label
1102	}
1103	}
1104	}
1105	}
1106	$itk_component(field) value $_curFldLabel
1107	}
1108
1109	InitSettings -color \
1110	-volumeambient -volumediffuse -volumespecularlevel \
1111	-volumespecularexponent -volumeblendmode -volumethickness \
1112	-volumelighting -volumeopacity -volumequality -volumeoutline -volumevisible \
1113	-cutplanesvisible \
1114	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1115	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1116
1117	if { $_reset } {
1118	SendCmd "camera reset"
1119	SendCmd "camera zoom $_view(-zoom)"
1120	RequestLegend
1121	set _reset 0
1122	}
1123	# Actually write the commands to the server socket. If it fails, we don't
1124	# care. We're finished here.
1125	blt::busy hold $itk_component(hull)
1126	StopBufferingCommands
1127	blt::busy release $itk_component(hull)
1128	}
1129
1130	# ----------------------------------------------------------------------
1131	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1132	#
1133	# Returns a list of server IDs for the current datasets being displayed. This
1134	# is normally a single ID, but it might be a list of IDs if the current data
1135	# object has multiple components.
1136	# ----------------------------------------------------------------------
1137	itcl::body Rappture::VtkVolumeViewer::CurrentDatasets {args} {
1138	set flag [lindex $args 0]
1139	switch -- $flag {
1140	"-all" {
1141	if { [llength $args] > 1 } {
1142	error "CurrentDatasets: can't specify dataobj after \"-all\""
1143	}
1144	set dlist [get -objects]
1145	}
1146	"-visible" {
1147	if { [llength $args] > 1 } {
1148	set dlist {}
1149	set args [lrange $args 1 end]
1150	foreach dataobj $args {
1151	if { [info exists _obj2ovride($dataobj-raise)] } {
1152	lappend dlist $dataobj
1153	}
1154	}
1155	} else {
1156	set dlist [get -visible]
1157	}
1158	}
1159	default {
1160	set dlist $args
1161	}
1162	}
1163	set rlist ""
1164	foreach dataobj $dlist {
1165	foreach comp [$dataobj components] {
1166	set tag $dataobj-$comp
1167	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1168	lappend rlist $tag
1169	}
1170	}
1171	}
1172	return $rlist
1173	}
1174
1175	# ----------------------------------------------------------------------
1176	# USAGE: Zoom in
1177	# USAGE: Zoom out
1178	# USAGE: Zoom reset
1179	#
1180	# Called automatically when the user clicks on one of the zoom
1181	# controls for this widget. Changes the zoom for the current view.
1182	# ----------------------------------------------------------------------
1183	itcl::body Rappture::VtkVolumeViewer::Zoom {option} {
1184	switch -- $option {
1185	"in" {
1186	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1187	SendCmd "camera zoom $_view(-zoom)"
1188	}
1189	"out" {
1190	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1191	SendCmd "camera zoom $_view(-zoom)"
1192	}
1193	"reset" {
1194	array set _view {
1195	-qw 0.853553
1196	-qx -0.353553
1197	-qy 0.353553
1198	-qz 0.146447
1199	-xpan 0
1200	-ypan 0
1201	-zoom 1.0
1202	}
1203	if { $_first != "" } {
1204	set location [$_first hints camera]
1205	if { $location != "" } {
1206	array set _view $location
1207	}
1208	}
1209	$_arcball quaternion [ViewToQuaternion]
1210	DoRotate
1211	SendCmd "camera reset"
1212	}
1213	}
1214	}
1215
1216	itcl::body Rappture::VtkVolumeViewer::PanCamera {} {
1217	set x $_view(-xpan)
1218	set y $_view(-ypan)
1219	SendCmd "camera pan $x $y"
1220	}
1221
1222	# ----------------------------------------------------------------------
1223	# USAGE: Rotate click <x> <y>
1224	# USAGE: Rotate drag <x> <y>
1225	# USAGE: Rotate release <x> <y>
1226	#
1227	# Called automatically when the user clicks/drags/releases in the
1228	# plot area. Moves the plot according to the user's actions.
1229	# ----------------------------------------------------------------------
1230	itcl::body Rappture::VtkVolumeViewer::Rotate {option x y} {
1231	switch -- $option {
1232	"click" {
1233	$itk_component(view) configure -cursor fleur
1234	set _click(x) $x
1235	set _click(y) $y
1236	}
1237	"drag" {
1238	if {[array size _click] == 0} {
1239	Rotate click $x $y
1240	} else {
1241	set w [winfo width $itk_component(view)]
1242	set h [winfo height $itk_component(view)]
1243	if {$w <= 0 \|\| $h <= 0} {
1244	return
1245	}
1246
1247	if {[catch {
1248	# this fails sometimes for no apparent reason
1249	set dx [expr {double($x-$_click(x))/$w}]
1250	set dy [expr {double($y-$_click(y))/$h}]
1251	}]} {
1252	return
1253	}
1254	if { $dx == 0 && $dy == 0 } {
1255	return
1256	}
1257	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1258	EventuallyRotate $q
1259	set _click(x) $x
1260	set _click(y) $y
1261	}
1262	}
1263	"release" {
1264	Rotate drag $x $y
1265	$itk_component(view) configure -cursor ""
1266	catch {unset _click}
1267	}
1268	default {
1269	error "bad option \"$option\": should be click, drag, release"
1270	}
1271	}
1272	}
1273
1274	itcl::body Rappture::VtkVolumeViewer::Pick {x y} {
1275	foreach tag [CurrentDatasets -visible] {
1276	SendCmd "dataset getscalar pixel $x $y $tag"
1277	}
1278	}
1279
1280	# ----------------------------------------------------------------------
1281	# USAGE: $this Pan click x y
1282	# $this Pan drag x y
1283	# $this Pan release x y
1284	#
1285	# Called automatically when the user clicks on one of the zoom
1286	# controls for this widget. Changes the zoom for the current view.
1287	# ----------------------------------------------------------------------
1288	itcl::body Rappture::VtkVolumeViewer::Pan {option x y} {
1289	switch -- $option {
1290	"set" {
1291	set w [winfo width $itk_component(view)]
1292	set h [winfo height $itk_component(view)]
1293	set x [expr $x / double($w)]
1294	set y [expr $y / double($h)]
1295	set _view(-xpan) [expr $_view(-xpan) + $x]
1296	set _view(-ypan) [expr $_view(-ypan) + $y]
1297	PanCamera
1298	return
1299	}
1300	"click" {
1301	set _click(x) $x
1302	set _click(y) $y
1303	$itk_component(view) configure -cursor hand1
1304	}
1305	"drag" {
1306	if { ![info exists _click(x)] } {
1307	set _click(x) $x
1308	}
1309	if { ![info exists _click(y)] } {
1310	set _click(y) $y
1311	}
1312	set w [winfo width $itk_component(view)]
1313	set h [winfo height $itk_component(view)]
1314	set dx [expr ($_click(x) - $x)/double($w)]
1315	set dy [expr ($_click(y) - $y)/double($h)]
1316	set _click(x) $x
1317	set _click(y) $y
1318	set _view(-xpan) [expr $_view(-xpan) - $dx]
1319	set _view(-ypan) [expr $_view(-ypan) - $dy]
1320	PanCamera
1321	}
1322	"release" {
1323	Pan drag $x $y
1324	$itk_component(view) configure -cursor ""
1325	}
1326	default {
1327	error "unknown option \"$option\": should set, click, drag, or release"
1328	}
1329	}
1330	}
1331
1332	# ----------------------------------------------------------------------
1333	# USAGE: InitSettings <what> ?<value>?
1334	#
1335	# Used internally to update rendering settings whenever parameters
1336	# change in the popup settings panel. Sends the new settings off
1337	# to the back end.
1338	# ----------------------------------------------------------------------
1339	itcl::body Rappture::VtkVolumeViewer::InitSettings { args } {
1340	foreach spec $args {
1341	if { [info exists _settings($_first${spec})] } {
1342	# Reset global setting with dataobj specific setting
1343	set _settings($spec) $_settings($_first${spec})
1344	}
1345	AdjustSetting $spec
1346	}
1347	}
1348
1349	#
1350	# AdjustSetting --
1351	#
1352	# Changes/updates a specific setting in the widget. There are
1353	# usually user-setable option. Commands are sent to the render
1354	# server.
1355	#
1356	itcl::body Rappture::VtkVolumeViewer::AdjustSetting {what {value ""}} {
1357	if { ![isconnected] } {
1358	return
1359	}
1360	switch -- $what {
1361	"-current" {
1362	set cname [$itk_component(volcomponents) value]
1363	SwitchComponent $cname
1364	}
1365	"-background" {
1366	set bgcolor [$itk_component(background) value]
1367	set _settings($what) $bgcolor
1368	array set fgcolors {
1369	"black" "white"
1370	"white" "black"
1371	"grey" "black"
1372	}
1373	configure -plotbackground $bgcolor \
1374	-plotforeground $fgcolors($bgcolor)
1375	$itk_component(view) delete "legend"
1376	DrawLegend
1377	}
1378	"-volumeoutline" {
1379	set bool $_settings($what)
1380	SendCmd "outline visible 0"
1381	foreach tag [GetDatasetsWithComponent $_current] {
1382	SendCmd "outline visible $bool $tag"
1383	}
1384	}
1385	"-legendvisible" {
1386	set bool $_settings($what)
1387	set _settings($_current${what}) $bool
1388	if { $bool } {
1389	blt::table $itk_component(plotarea) \
1390	1,0 $itk_component(legend) -fill x
1391	} else {
1392	blt::table forget $itk_component(legend)
1393	}
1394	}
1395	"-volumevisible" {
1396	set bool $_settings($what)
1397	set _settings($_current${what}) $bool
1398	# Only the data objects in the array _obj2ovride(*-raise) are
1399	# in the working set and can be displayed on screen. The global
1400	# volume control determines whether they are visible.
1401	#
1402	# Note: The use of the current component is a hold over from
1403	# nanovis. If we can't display more than one volume,
1404	# we don't have to limit the effects to a specific
1405	# component.
1406	foreach tag [GetDatasetsWithComponent $_current] {
1407	foreach {dataobj cname} [split $tag -] break
1408	if { [info exists _obj2ovride($dataobj-raise)] } {
1409	SendCmd "volume visible $bool $tag"
1410	}
1411	}
1412	if { $bool } {
1413	Rappture::Tooltip::for $itk_component(volume) \
1414	"Hide the volume"
1415	} else {
1416	Rappture::Tooltip::for $itk_component(volume) \
1417	"Show the volume"
1418	}
1419	}
1420	"-volumeblendmode" {
1421	set val [$itk_component(blendmode) value]
1422	set mode [$itk_component(blendmode) translate $val]
1423	set _settings($what) $mode
1424	set _settings($_current${what}) $mode
1425	foreach tag [GetDatasetsWithComponent $_current] {
1426	SendCmd "volume blendmode $mode $tag"
1427	}
1428	}
1429	"-volumeambient" {
1430	# Other parts of the code use the -volumeambient setting to
1431	# tell if the component settings have been initialized
1432	if { ![info exists _settings($_current${what})] } {
1433	InitComponentSettings $_current
1434	}
1435	set val $_settings($what)
1436	set _settings($_current${what}) $val
1437	set ambient [expr {0.01*$val}]
1438	foreach tag [GetDatasetsWithComponent $_current] {
1439	SendCmd "volume shading ambient $ambient $tag"
1440	}
1441	}
1442	"-volumediffuse" {
1443	set val $_settings($what)
1444	set _settings($_current${what}) $val
1445	set diffuse [expr {0.01*$val}]
1446	foreach tag [GetDatasetsWithComponent $_current] {
1447	SendCmd "volume shading diffuse $diffuse $tag"
1448	}
1449	}
1450	"-volumespecularlevel" - "-volumespecularexponent" {
1451	set val $_settings($what)
1452	set _settings($_current${what}) $val
1453	set level [expr {0.01*$val}]
1454	set exp $_settings($what)
1455	foreach tag [GetDatasetsWithComponent $_current] {
1456	SendCmd "volume shading specular $level $exp $tag"
1457	}
1458	}
1459	"-volumelighting" {
1460	set bool $_settings($what)
1461	set _settings($_current${what}) $bool
1462	foreach tag [GetDatasetsWithComponent $_current] {
1463	SendCmd "volume lighting $bool $tag"
1464	}
1465	}
1466	"-volumeopacity" {
1467	set val $_settings($what)
1468	set _settings($_current${what}) $val
1469	set val [expr {0.01*$val}]
1470	foreach tag [GetDatasetsWithComponent $_current] {
1471	SendCmd "volume opacity $val $tag"
1472	}
1473	}
1474	"-volumequality" {
1475	set val $_settings($what)
1476	set _settings($_current${what}) $val
1477	set val [expr {0.01*$val}]
1478	foreach tag [GetDatasetsWithComponent $_current] {
1479	SendCmd "volume quality $val $tag"
1480	}
1481	}
1482	"-axesvisible" {
1483	set bool $_settings($what)
1484	SendCmd "axis visible all $bool"
1485	}
1486	"-axislabels" {
1487	set bool $_settings($what)
1488	SendCmd "axis labels all $bool"
1489	}
1490	"-axisminorticks" {
1491	set bool $_settings($what)
1492	SendCmd "axis minticks all $bool"
1493	}
1494	"-xgrid" - "-ygrid" - "-zgrid" {
1495	set axis [string range $what 1 1]
1496	set bool $_settings($what)
1497	SendCmd "axis grid $axis $bool"
1498	}
1499	"-axisflymode" {
1500	set mode [$itk_component(axismode) value]
1501	set mode [$itk_component(axismode) translate $mode]
1502	set _settings($what) $mode
1503	SendCmd "axis flymode $mode"
1504	}
1505	"-cutplanesvisible" {
1506	set bool $_settings($what)
1507	foreach dataset [CurrentDatasets -visible] {
1508	SendCmd "$_cutplaneCmd visible $bool $dataset"
1509	}
1510	}
1511	"-cutplanelighting" {
1512	set bool $_settings($what)
1513	foreach dataset [CurrentDatasets -visible] {
1514	if {$_cutplaneCmd != "imgcutplane"} {
1515	SendCmd "$_cutplaneCmd lighting $bool $dataset"
1516	} else {
1517	if {$bool} {
1518	set ambient 0.0
1519	set diffuse 1.0
1520	} else {
1521	set ambient 1.0
1522	set diffuse 0.0
1523	}
1524	SendCmd "imgcutplane material $ambient $diffuse $dataset"
1525	}
1526	}
1527	}
1528	"-cutplaneopacity" {
1529	set val $_settings($what)
1530	set sval [expr { 0.01 * double($val) }]
1531	foreach dataset [CurrentDatasets -visible] {
1532	SendCmd "$_cutplaneCmd opacity $sval $dataset"
1533	}
1534	}
1535	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1536	set axis [string range $what 1 1]
1537	set bool $_settings($what)
1538	if { $bool } {
1539	$itk_component(${axis}CutScale) configure -state normal \
1540	-troughcolor white
1541	} else {
1542	$itk_component(${axis}CutScale) configure -state disabled \
1543	-troughcolor grey82
1544	}
1545	foreach dataset [CurrentDatasets -visible] {
1546	SendCmd "$_cutplaneCmd axis $axis $bool $dataset"
1547	}
1548	}
1549	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1550	set axis [string range $what 1 1]
1551	set pos [expr $_settings($what) * 0.01]
1552	foreach dataset [CurrentDatasets -visible] {
1553	SendCmd "$_cutplaneCmd slice ${axis} ${pos} $dataset"
1554	}
1555	set _cutplanePending 0
1556	}
1557	"-volumethickness" {
1558	set _settings($_current${what}) $_settings($what)
1559	updateTransferFunctions
1560	}
1561	"-color" {
1562	set color [$itk_component(colormap) value]
1563	set _settings($what) $color
1564	set _settings($_current${what}) $color
1565	ResetColormap $_current $color
1566	}
1567	"-field" {
1568	set label [$itk_component(field) value]
1569	set fname [$itk_component(field) translate $label]
1570	set _settings($what) $fname
1571	if { [info exists _fields($fname)] } {
1572	foreach { label units components } $_fields($fname) break
1573	if { !$_allowMultiComponent && $components > 1 } {
1574	puts stderr "Can't use a vector field in a volume"
1575	return
1576	} else {
1577	if { $components > 1 } {
1578	set _colorMode vmag
1579	} else {
1580	set _colorMode scalar
1581	}
1582	}
1583	set _curFldName $fname
1584	set _curFldLabel $label
1585	} else {
1586	puts stderr "unknown field \"$fname\""
1587	return
1588	}
1589	foreach dataset [CurrentDatasets -visible $_first] {
1590	#SendCmd "$_cutplaneCmd colormode $_colorMode $_curFldName $dataset"
1591	SendCmd "dataset scalar $_curFldName $dataset"
1592	}
1593	SendCmd "camera reset"
1594	DrawLegend
1595	}
1596	default {
1597	error "don't know how to fix $what"
1598	}
1599	}
1600	}
1601
1602	#
1603	# RequestLegend --
1604	#
1605	# Request a new legend from the server. The size of the legend
1606	# is determined from the height of the canvas.
1607	#
1608	itcl::body Rappture::VtkVolumeViewer::RequestLegend {} {
1609	set _legendPending 0
1610	set font "Arial 8"
1611	set lineht [font metrics $itk_option(-font) -linespace]
1612	set c $itk_component(legend)
1613	set w [winfo width $c]
1614	set h [winfo height $c]
1615	set h [expr {$h-$lineht-20}]
1616	set w [expr {$w-20}]
1617	# Set the legend on the first volume dataset.
1618	foreach dataset [CurrentDatasets -visible $_first] {
1619	foreach {dataobj comp} [split $dataset -] break
1620	if { [info exists _dataset2style($dataset)] } {
1621	#SendCmd "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1622	SendCmd "legend2 $_dataset2style($dataset) $w $h"
1623	break;
1624	}
1625	}
1626	}
1627
1628	# ----------------------------------------------------------------------
1629	# CONFIGURATION OPTION: -plotbackground
1630	# ----------------------------------------------------------------------
1631	itcl::configbody Rappture::VtkVolumeViewer::plotbackground {
1632	if { [isconnected] } {
1633	set color $itk_option(-plotbackground)
1634	set rgb [Color2RGB $color]
1635	SendCmd "screen bgcolor $rgb"
1636	$itk_component(legend) configure -background $color
1637	}
1638	}
1639
1640	# ----------------------------------------------------------------------
1641	# CONFIGURATION OPTION: -plotforeground
1642	# ----------------------------------------------------------------------
1643	itcl::configbody Rappture::VtkVolumeViewer::plotforeground {
1644	if { [isconnected] } {
1645	set color $itk_option(-plotforeground)
1646	set rgb [Color2RGB $color]
1647	SendCmd "axis color all $rgb"
1648	SendCmd "outline color $rgb"
1649	SendCmd "$_cutplaneCmd color $rgb"
1650	$itk_component(legend) itemconfigure labels -fill $color
1651	$itk_component(legend) itemconfigure limits -fill $color
1652	}
1653	}
1654
1655	itcl::body Rappture::VtkVolumeViewer::BuildViewTab {} {
1656	set font [option get $itk_component(hull) font Font]
1657
1658	set inner [$itk_component(main) insert end \
1659	-title "View Settings" \
1660	-icon [Rappture::icon wrench]]
1661	$inner configure -borderwidth 4
1662
1663	checkbutton $inner.axes \
1664	-text "Axes" \
1665	-variable [itcl::scope _settings(-axesvisible)] \
1666	-command [itcl::code $this AdjustSetting -axesvisible] \
1667	-font $font
1668
1669	checkbutton $inner.outline \
1670	-text "Outline" \
1671	-variable [itcl::scope _settings(-volumeoutline)] \
1672	-command [itcl::code $this AdjustSetting -volumeoutline] \
1673	-font $font
1674
1675	checkbutton $inner.legend \
1676	-text "Legend" \
1677	-variable [itcl::scope _settings(-legendvisible)] \
1678	-command [itcl::code $this AdjustSetting -legendvisible] \
1679	-font $font
1680
1681	checkbutton $inner.volume \
1682	-text "Volume" \
1683	-variable [itcl::scope _settings(-volumevisible)] \
1684	-command [itcl::code $this AdjustSetting -volumevisible] \
1685	-font $font
1686
1687	label $inner.background_l -text "Background" -font $font
1688	itk_component add background {
1689	Rappture::Combobox $inner.background -width 10 -editable no
1690	}
1691	$inner.background choices insert end \
1692	"black" "black" \
1693	"white" "white" \
1694	"grey" "grey"
1695
1696	$itk_component(background) value $_settings(-background)
1697	bind $inner.background <<Value>> \
1698	[itcl::code $this AdjustSetting -background]
1699
1700	blt::table $inner \
1701	0,0 $inner.axes -cspan 2 -anchor w \
1702	1,0 $inner.outline -cspan 2 -anchor w \
1703	2,0 $inner.volume -cspan 2 -anchor w \
1704	3,0 $inner.legend -cspan 2 -anchor w \
1705	4,0 $inner.background_l -anchor e -pady 2 \
1706	4,1 $inner.background -fill x
1707
1708	blt::table configure $inner r* -resize none
1709	blt::table configure $inner r5 -resize expand
1710	}
1711
1712	itcl::body Rappture::VtkVolumeViewer::BuildVolumeTab {} {
1713	set font [option get $itk_component(hull) font Font]
1714	#set bfont [option get $itk_component(hull) boldFont Font]
1715	set bfont "Arial 9 bold"
1716
1717	set inner [$itk_component(main) insert end \
1718	-title "Volume Settings" \
1719	-icon [Rappture::icon volume-on]]
1720	$inner configure -borderwidth 4
1721
1722	label $inner.volcomponents_l -text "Component" -font $font
1723	itk_component add volcomponents {
1724	Rappture::Combobox $inner.volcomponents -editable no
1725	}
1726	bind $inner.volcomponents <<Value>> \
1727	[itcl::code $this AdjustSetting -current]
1728
1729	checkbutton $inner.visibility \
1730	-text "Visible" \
1731	-font $font \
1732	-variable [itcl::scope _settings(-volumevisible)] \
1733	-command [itcl::code $this AdjustSetting -volumevisible]
1734
1735	label $inner.lighting_l \
1736	-text "Lighting / Material Properties" \
1737	-font $bfont
1738
1739	checkbutton $inner.lighting \
1740	-text "Enable Lighting" \
1741	-font $font \
1742	-variable [itcl::scope _settings(-volumelighting)] \
1743	-command [itcl::code $this AdjustSetting -volumelighting]
1744
1745	label $inner.ambient_l \
1746	-text "Ambient" \
1747	-font $font
1748	::scale $inner.ambient -from 0 -to 100 -orient horizontal \
1749	-variable [itcl::scope _settings(-volumeambient)] \
1750	-showvalue off \
1751	-command [itcl::code $this AdjustSetting -volumeambient] \
1752	-troughcolor grey92
1753
1754	label $inner.diffuse_l -text "Diffuse" -font $font
1755	::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
1756	-variable [itcl::scope _settings(-volumediffuse)] \
1757	-showvalue off \
1758	-command [itcl::code $this AdjustSetting -volumediffuse] \
1759	-troughcolor grey92
1760
1761	label $inner.specularLevel_l -text "Specular" -font $font
1762	::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
1763	-variable [itcl::scope _settings(-volumespecularlevel)] \
1764	-showvalue off \
1765	-command [itcl::code $this AdjustSetting -volumespecularlevel] \
1766	-troughcolor grey92
1767
1768	label $inner.specularExponent_l -text "Shininess" -font $font
1769	::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
1770	-variable [itcl::scope _settings(-volumespecularexponent)] \
1771	-showvalue off \
1772	-command [itcl::code $this AdjustSetting -volumespecularexponent] \
1773	-troughcolor grey92
1774
1775	label $inner.opacity_l -text "Opacity" -font $font
1776	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1777	-variable [itcl::scope _settings(-volumeopacity)] \
1778	-showvalue off \
1779	-command [itcl::code $this AdjustSetting -volumeopacity] \
1780	-troughcolor grey92
1781
1782	label $inner.quality_l -text "Quality" -font $font
1783	::scale $inner.quality -from 0 -to 100 -orient horizontal \
1784	-variable [itcl::scope _settings(-volumequality)] \
1785	-showvalue off \
1786	-command [itcl::code $this AdjustSetting -volumequality] \
1787	-troughcolor grey92
1788
1789	label $inner.field_l -text "Field" -font $font
1790	itk_component add field {
1791	Rappture::Combobox $inner.field -editable no
1792	}
1793	bind $inner.field <<Value>> \
1794	[itcl::code $this AdjustSetting -field]
1795
1796	label $inner.transferfunction_l \
1797	-text "Transfer Function" -font $bfont
1798
1799	label $inner.thin -text "Thin" -font $font
1800	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1801	-variable [itcl::scope _settings(-volumethickness)] \
1802	-showvalue off \
1803	-command [itcl::code $this AdjustSetting -volumethickness] \
1804	-troughcolor grey92
1805
1806	label $inner.thick -text "Thick" -font $font
1807	$inner.thickness set $_settings(-volumethickness)
1808
1809	label $inner.colormap_l -text "Colormap" -font $font
1810	itk_component add colormap {
1811	Rappture::Combobox $inner.colormap -width 10 -editable no
1812	}
1813	$inner.colormap choices insert end [GetColormapList -includeDefault]
1814
1815	bind $inner.colormap <<Value>> \
1816	[itcl::code $this AdjustSetting -color]
1817	$itk_component(colormap) value $_settings(-color)
1818
1819	label $inner.blendmode_l -text "Blend Mode" -font $font
1820	itk_component add blendmode {
1821	Rappture::Combobox $inner.blendmode -editable no
1822	}
1823	$inner.blendmode choices insert end \
1824	"composite" "Composite" \
1825	"max_intensity" "Maximum Intensity" \
1826	"additive" "Additive"
1827
1828	$itk_component(blendmode) value \
1829	"[$itk_component(blendmode) label $_settings(-volumeblendmode)]"
1830	bind $inner.blendmode <<Value>> \
1831	[itcl::code $this AdjustSetting -volumeblendmode]
1832
1833	blt::table $inner \
1834	0,0 $inner.volcomponents_l -anchor e -cspan 2 \
1835	0,2 $inner.volcomponents -cspan 3 -fill x \
1836	1,0 $inner.field_l -anchor e -cspan 2 \
1837	1,2 $inner.field -cspan 3 -fill x \
1838	2,0 $inner.lighting_l -anchor w -cspan 4 \
1839	3,1 $inner.lighting -anchor w -cspan 3 \
1840	4,1 $inner.ambient_l -anchor e \
1841	4,2 $inner.ambient -cspan 3 -fill x \
1842	5,1 $inner.diffuse_l -anchor e \
1843	5,2 $inner.diffuse -cspan 3 -fill x \
1844	6,1 $inner.specularLevel_l -anchor e \
1845	6,2 $inner.specularLevel -cspan 3 -fill x \
1846	7,1 $inner.specularExponent_l -anchor e \
1847	7,2 $inner.specularExponent -cspan 3 -fill x \
1848	8,1 $inner.visibility -anchor w -cspan 3 \
1849	9,1 $inner.quality_l -anchor e \
1850	9,2 $inner.quality -cspan 3 -fill x \
1851	10,0 $inner.transferfunction_l -anchor w -cspan 4 \
1852	11,1 $inner.opacity_l -anchor e \
1853	11,2 $inner.opacity -cspan 3 -fill x \
1854	12,1 $inner.colormap_l -anchor e \
1855	12,2 $inner.colormap -padx 2 -cspan 3 -fill x \
1856	13,1 $inner.blendmode_l -anchor e \
1857	13,2 $inner.blendmode -padx 2 -cspan 3 -fill x \
1858	14,1 $inner.thin -anchor e \
1859	14,2 $inner.thickness -cspan 2 -fill x \
1860	14,4 $inner.thick -anchor w
1861
1862	blt::table configure $inner r* c* -resize none
1863	blt::table configure $inner r* -pady { 2 0 }
1864	blt::table configure $inner c2 c3 r15 -resize expand
1865	blt::table configure $inner c0 -width .1i
1866	}
1867
1868	itcl::body Rappture::VtkVolumeViewer::BuildAxisTab {} {
1869	set font [option get $itk_component(hull) font Font]
1870
1871	set inner [$itk_component(main) insert end \
1872	-title "Axis Settings" \
1873	-icon [Rappture::icon axis2]]
1874	$inner configure -borderwidth 4
1875
1876	checkbutton $inner.visible \
1877	-text "Axes" \
1878	-variable [itcl::scope _settings(-axesvisible)] \
1879	-command [itcl::code $this AdjustSetting -axesvisible] \
1880	-font $font
1881
1882	checkbutton $inner.labels \
1883	-text "Axis Labels" \
1884	-variable [itcl::scope _settings(-axislabels)] \
1885	-command [itcl::code $this AdjustSetting -axislabels] \
1886	-font $font
1887	label $inner.grid_l -text "Grid" -font $font
1888	checkbutton $inner.xgrid \
1889	-text "X" \
1890	-variable [itcl::scope _settings(-xgrid)] \
1891	-command [itcl::code $this AdjustSetting -xgrid] \
1892	-font $font
1893	checkbutton $inner.ygrid \
1894	-text "Y" \
1895	-variable [itcl::scope _settings(-ygrid)] \
1896	-command [itcl::code $this AdjustSetting -ygrid] \
1897	-font $font
1898	checkbutton $inner.zgrid \
1899	-text "Z" \
1900	-variable [itcl::scope _settings(-zgrid)] \
1901	-command [itcl::code $this AdjustSetting -zgrid] \
1902	-font $font
1903	checkbutton $inner.minorticks \
1904	-text "Minor Ticks" \
1905	-variable [itcl::scope _settings(-axisminorticks)] \
1906	-command [itcl::code $this AdjustSetting -axisminorticks] \
1907	-font $font
1908
1909	label $inner.mode_l -text "Mode" -font $font
1910
1911	itk_component add axismode {
1912	Rappture::Combobox $inner.mode -width 10 -editable no
1913	}
1914	$inner.mode choices insert end \
1915	"static_triad" "static" \
1916	"closest_triad" "closest" \
1917	"furthest_triad" "farthest" \
1918	"outer_edges" "outer"
1919	$itk_component(axismode) value $_settings(-axisflymode)
1920	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
1921
1922	blt::table $inner \
1923	0,0 $inner.visible -anchor w -cspan 4 \
1924	1,0 $inner.labels -anchor w -cspan 4 \
1925	2,0 $inner.minorticks -anchor w -cspan 4 \
1926	4,0 $inner.grid_l -anchor w \
1927	4,1 $inner.xgrid -anchor w \
1928	4,2 $inner.ygrid -anchor w \
1929	4,3 $inner.zgrid -anchor w \
1930	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1931	5,1 $inner.mode -fill x -cspan 3
1932
1933	blt::table configure $inner r* c* -resize none
1934	blt::table configure $inner r7 c6 -resize expand
1935	blt::table configure $inner r3 -height 0.125i
1936	}
1937
1938	itcl::body Rappture::VtkVolumeViewer::BuildCameraTab {} {
1939	set font [option get $itk_component(hull) font Font]
1940	set inner [$itk_component(main) insert end \
1941	-title "Camera Settings" \
1942	-icon [Rappture::icon camera]]
1943	$inner configure -borderwidth 4
1944
1945	label $inner.view_l -text "view" -font $font
1946	set f [frame $inner.view]
1947	foreach side { front back left right top bottom } {
1948	button $f.$side -image [Rappture::icon view$side] \
1949	-command [itcl::code $this SetOrientation $side]
1950	Rappture::Tooltip::for $f.$side "Change the view to $side"
1951	pack $f.$side -side left
1952	}
1953	blt::table $inner \
1954	0,0 $inner.view_l -anchor e -pady 2 \
1955	0,1 $inner.view -anchor w -pady 2
1956	blt::table configure $inner r0 -resize none
1957
1958	set row 1
1959	set labels { qx qy qz qw xpan ypan zoom }
1960	foreach tag $labels {
1961	label $inner.${tag}label -text $tag -font $font
1962	entry $inner.${tag} -font $font -bg white \
1963	-textvariable [itcl::scope _view(-$tag)]
1964	bind $inner.${tag} <Return> \
1965	[itcl::code $this camera set -${tag}]
1966	bind $inner.${tag} <KP_Enter> \
1967	[itcl::code $this camera set -${tag}]
1968	blt::table $inner \
1969	$row,0 $inner.${tag}label -anchor e -pady 2 \
1970	$row,1 $inner.${tag} -anchor w -pady 2
1971	blt::table configure $inner r$row -resize none
1972	incr row
1973	}
1974	checkbutton $inner.ortho \
1975	-text "Orthographic Projection" \
1976	-variable [itcl::scope _view(-ortho)] \
1977	-command [itcl::code $this camera set -ortho] \
1978	-font $font
1979	blt::table $inner \
1980	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1981	blt::table configure $inner r$row -resize none
1982	incr row
1983
1984	blt::table configure $inner c0 c1 -resize none
1985	blt::table configure $inner c2 -resize expand
1986	blt::table configure $inner r$row -resize expand
1987	}
1988
1989	itcl::body Rappture::VtkVolumeViewer::BuildCutplaneTab {} {
1990	set font [option get $itk_component(hull) font Font]
1991
1992	set inner [$itk_component(main) insert end \
1993	-title "Cutplane Settings" \
1994	-icon [Rappture::icon cutbutton]]
1995
1996	$inner configure -borderwidth 4
1997
1998	checkbutton $inner.visible \
1999	-text "Show Cutplanes" \
2000	-variable [itcl::scope _settings(-cutplanesvisible)] \
2001	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
2002	-font $font
2003
2004	checkbutton $inner.lighting \
2005	-text "Enable Lighting" \
2006	-variable [itcl::scope _settings(-cutplanelighting)] \
2007	-command [itcl::code $this AdjustSetting -cutplanelighting] \
2008	-font $font
2009
2010	label $inner.opacity_l -text "Opacity" -font $font
2011	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2012	-variable [itcl::scope _settings(-cutplaneopacity)] \
2013	-width 10 \
2014	-showvalue off \
2015	-command [itcl::code $this AdjustSetting -cutplaneopacity]
2016	$inner.opacity set $_settings(-cutplaneopacity)
2017
2018	# X-value slicer...
2019	itk_component add xCutButton {
2020	Rappture::PushButton $inner.xbutton \
2021	-onimage [Rappture::icon x-cutplane] \
2022	-offimage [Rappture::icon x-cutplane] \
2023	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
2024	-variable [itcl::scope _settings(-xcutplanevisible)]
2025	}
2026	Rappture::Tooltip::for $itk_component(xCutButton) \
2027	"Toggle the X-axis cutplane on/off"
2028	$itk_component(xCutButton) select
2029
2030	itk_component add xCutScale {
2031	::scale $inner.xval -from 100 -to 0 \
2032	-width 10 -orient vertical -showvalue yes \
2033	-borderwidth 1 -highlightthickness 0 \
2034	-command [itcl::code $this EventuallySetCutplane x] \
2035	-variable [itcl::scope _settings(-xcutplaneposition)]
2036	} {
2037	usual
2038	ignore -borderwidth -highlightthickness
2039	}
2040	# Set the default cutplane value before disabling the scale.
2041	$itk_component(xCutScale) set 50
2042	$itk_component(xCutScale) configure -state disabled
2043	Rappture::Tooltip::for $itk_component(xCutScale) \
2044	"@[itcl::code $this Slice tooltip x]"
2045
2046	# Y-value slicer...
2047	itk_component add yCutButton {
2048	Rappture::PushButton $inner.ybutton \
2049	-onimage [Rappture::icon y-cutplane] \
2050	-offimage [Rappture::icon y-cutplane] \
2051	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
2052	-variable [itcl::scope _settings(-ycutplanevisible)]
2053	}
2054	Rappture::Tooltip::for $itk_component(yCutButton) \
2055	"Toggle the Y-axis cutplane on/off"
2056	$itk_component(yCutButton) select
2057
2058	itk_component add yCutScale {
2059	::scale $inner.yval -from 100 -to 0 \
2060	-width 10 -orient vertical -showvalue yes \
2061	-borderwidth 1 -highlightthickness 0 \
2062	-command [itcl::code $this EventuallySetCutplane y] \
2063	-variable [itcl::scope _settings(-ycutplaneposition)]
2064	} {
2065	usual
2066	ignore -borderwidth -highlightthickness
2067	}
2068	Rappture::Tooltip::for $itk_component(yCutScale) \
2069	"@[itcl::code $this Slice tooltip y]"
2070	# Set the default cutplane value before disabling the scale.
2071	$itk_component(yCutScale) set 50
2072	$itk_component(yCutScale) configure -state disabled
2073
2074	# Z-value slicer...
2075	itk_component add zCutButton {
2076	Rappture::PushButton $inner.zbutton \
2077	-onimage [Rappture::icon z-cutplane] \
2078	-offimage [Rappture::icon z-cutplane] \
2079	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
2080	-variable [itcl::scope _settings(-zcutplanevisible)]
2081	}
2082	Rappture::Tooltip::for $itk_component(zCutButton) \
2083	"Toggle the Z-axis cutplane on/off"
2084	$itk_component(zCutButton) select
2085
2086	itk_component add zCutScale {
2087	::scale $inner.zval -from 100 -to 0 \
2088	-width 10 -orient vertical -showvalue yes \
2089	-borderwidth 1 -highlightthickness 0 \
2090	-command [itcl::code $this EventuallySetCutplane z] \
2091	-variable [itcl::scope _settings(-zcutplaneposition)]
2092	} {
2093	usual
2094	ignore -borderwidth -highlightthickness
2095	}
2096	$itk_component(zCutScale) set 50
2097	$itk_component(zCutScale) configure -state disabled
2098	Rappture::Tooltip::for $itk_component(zCutScale) \
2099	"@[itcl::code $this Slice tooltip z]"
2100
2101	blt::table $inner \
2102	0,0 $inner.visible -anchor w -pady 2 -cspan 4 \
2103	1,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2104	2,0 $inner.opacity_l -anchor w -pady 2 -cspan 3 \
2105	3,0 $inner.opacity -fill x -pady 2 -cspan 3 \
2106	4,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
2107	5,0 $itk_component(xCutScale) -fill y \
2108	4,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
2109	5,1 $itk_component(yCutScale) -fill y \
2110	4,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
2111	5,2 $itk_component(zCutScale) -fill y
2112
2113	blt::table configure $inner r* c* -resize none
2114	blt::table configure $inner r5 c3 -resize expand
2115	}
2116
2117	#
2118	# camera --
2119	#
2120	itcl::body Rappture::VtkVolumeViewer::camera {option args} {
2121	switch -- $option {
2122	"show" {
2123	puts [array get _view]
2124	}
2125	"set" {
2126	set what [lindex $args 0]
2127	set x $_view($what)
2128	set code [catch { string is double $x } result]
2129	if { $code != 0 \|\| !$result } {
2130	return
2131	}
2132	switch -- $what {
2133	"-ortho" {
2134	if {$_view($what)} {
2135	SendCmd "camera mode ortho"
2136	} else {
2137	SendCmd "camera mode persp"
2138	}
2139	}
2140	"-xpan" - "-ypan" {
2141	PanCamera
2142	}
2143	"-qx" - "-qy" - "-qz" - "-qw" {
2144	set q [ViewToQuaternion]
2145	$_arcball quaternion $q
2146	EventuallyRotate $q
2147	}
2148	"-zoom" {
2149	SendCmd "camera zoom $_view($what)"
2150	}
2151	}
2152	}
2153	}
2154	}
2155
2156	itcl::body Rappture::VtkVolumeViewer::GetVtkData { args } {
2157	set bytes ""
2158	foreach dataobj [get] {
2159	foreach comp [$dataobj components] {
2160	set tag $dataobj-$comp
2161	set contents [$dataobj vtkdata $comp]
2162	append bytes "$contents\n"
2163	}
2164	}
2165	return [list .vtk $bytes]
2166	}
2167
2168	itcl::body Rappture::VtkVolumeViewer::GetImage { args } {
2169	if { [image width $_image(download)] > 0 &&
2170	[image height $_image(download)] > 0 } {
2171	set bytes [$_image(download) data -format "jpeg -quality 100"]
2172	set bytes [Rappture::encoding::decode -as b64 $bytes]
2173	return [list .jpg $bytes]
2174	}
2175	return ""
2176	}
2177
2178	itcl::body Rappture::VtkVolumeViewer::BuildDownloadPopup { popup command } {
2179	Rappture::Balloon $popup \
2180	-title "[Rappture::filexfer::label downloadWord] as..."
2181	set inner [$popup component inner]
2182	label $inner.summary -text "" -anchor w
2183	radiobutton $inner.vtk_button -text "VTK data file" \
2184	-variable [itcl::scope _downloadPopup(format)] \
2185	-font "Helvetica 9 " \
2186	-value vtk
2187	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2188	radiobutton $inner.image_button -text "Image File" \
2189	-variable [itcl::scope _downloadPopup(format)] \
2190	-value image
2191	Rappture::Tooltip::for $inner.image_button \
2192	"Save as digital image."
2193
2194	button $inner.ok -text "Save" \
2195	-highlightthickness 0 -pady 2 -padx 3 \
2196	-command $command \
2197	-compound left \
2198	-image [Rappture::icon download]
2199
2200	button $inner.cancel -text "Cancel" \
2201	-highlightthickness 0 -pady 2 -padx 3 \
2202	-command [list $popup deactivate] \
2203	-compound left \
2204	-image [Rappture::icon cancel]
2205
2206	blt::table $inner \
2207	0,0 $inner.summary -cspan 2 \
2208	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2209	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2210	4,1 $inner.cancel -width .9i -fill y \
2211	4,0 $inner.ok -padx 2 -width .9i -fill y
2212	blt::table configure $inner r3 -height 4
2213	blt::table configure $inner r4 -pady 4
2214	raise $inner.image_button
2215	$inner.vtk_button invoke
2216	return $inner
2217	}
2218
2219	itcl::body Rappture::VtkVolumeViewer::SetObjectStyle { dataobj cname } {
2220	# Parse style string.
2221	set tag $dataobj-$cname
2222	array set style {
2223	-color BCGYR
2224	-lighting 1
2225	-opacity 0.5
2226	-outline 0
2227	-visible 1
2228	}
2229	array set style [$dataobj style $cname]
2230	set _settings($cname-volumelighting) $style(-lighting)
2231	set _settings($cname-volumeopacity) [expr $style(-opacity) * 100]
2232	set _settings($cname-volumeoutline) $style(-outline)
2233	set _settings($cname-volumevisible) $style(-visible)
2234
2235	$itk_component(colormap) value $style(-color)
2236
2237	SendCmd "outline add $tag"
2238	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2239	SendCmd "outline visible $style(-outline) $tag"
2240
2241	SendCmd "$_cutplaneCmd add $tag"
2242	SendCmd "$_cutplaneCmd color [Color2RGB $itk_option(-plotforeground)] $tag"
2243	SendCmd "$_cutplaneCmd visible 0 $tag"
2244
2245	SendCmd "volume add $tag"
2246	SendCmd "volume lighting $style(-lighting) $tag"
2247	SendCmd "volume opacity $style(-opacity) $tag"
2248	SendCmd "volume visible $style(-visible) $tag"
2249
2250	SetInitialTransferFunction $dataobj $cname
2251	SendCmd "volume colormap $cname $tag"
2252	SendCmd "$_cutplaneCmd colormap $cname-opaque $tag"
2253	}
2254
2255	itcl::body Rappture::VtkVolumeViewer::IsValidObject { dataobj } {
2256	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2257	return 0
2258	}
2259	return 1
2260	}
2261
2262	# ----------------------------------------------------------------------
2263	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2264	#
2265	# Invoked automatically whenever the "legend" command comes in from
2266	# the rendering server. Indicates that binary image data with the
2267	# specified <size> will follow.
2268	# ----------------------------------------------------------------------
2269	itcl::body Rappture::VtkVolumeViewer::ReceiveLegend { colormap title vmin vmax size } {
2270	if { [isconnected] } {
2271	set bytes [ReceiveBytes $size]
2272	if { ![info exists _image(legend)] } {
2273	set _image(legend) [image create photo]
2274	}
2275	$_image(legend) configure -data $bytes
2276	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2277	if { [catch {DrawLegend} errs] != 0 } {
2278	puts stderr errs=$errs
2279	}
2280	}
2281	}
2282
2283	#
2284	# DrawLegend --
2285	#
2286	itcl::body Rappture::VtkVolumeViewer::DrawLegend {} {
2287	if { $_current == "" } {
2288	set _current "component"
2289	}
2290	set cname $_current
2291	set c $itk_component(legend)
2292	set w [winfo width $c]
2293	set h [winfo height $c]
2294	set lx 10
2295	set ly [expr {$h - 1}]
2296	if {"" == [$c find withtag colorbar]} {
2297	$c create image 10 10 -anchor nw \
2298	-image $_image(legend) -tags colorbar
2299	$c create text $lx $ly -anchor sw \
2300	-fill $itk_option(-plotforeground) -tags "limits text vmin"
2301	$c create text [expr {$w-$lx}] $ly -anchor se \
2302	-fill $itk_option(-plotforeground) -tags "limits text vmax"
2303	$c create text [expr {$w/2}] $ly -anchor s \
2304	-fill $itk_option(-plotforeground) -tags "limits text title"
2305	$c lower colorbar
2306	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddNewMarker %x %y]
2307	}
2308
2309	# Display the markers used by the current transfer function.
2310	HideAllMarkers
2311	if { [info exists _transferFunctionEditors($cname)] } {
2312	$_transferFunctionEditors($cname) showMarkers $_limits($cname)
2313	}
2314
2315	foreach {min max} $_limits($cname) break
2316	$c itemconfigure vmin -text [format %g $min]
2317	$c coords vmin $lx $ly
2318
2319	$c itemconfigure vmax -text [format %g $max]
2320	$c coords vmax [expr {$w-$lx}] $ly
2321
2322	set title ""
2323	if { $_first != "" } {
2324	set title [$_first hints label]
2325	set units [$_first hints units]
2326	if { $units != "" } {
2327	set title "$title ($units)"
2328	}
2329	}
2330	$c itemconfigure title -text $title
2331	$c coords title [expr {$w/2}] $ly
2332	}
2333
2334	#
2335	# EnterLegend --
2336	#
2337	itcl::body Rappture::VtkVolumeViewer::EnterLegend { x y } {
2338	SetLegendTip $x $y
2339	}
2340
2341	#
2342	# MotionLegend --
2343	#
2344	itcl::body Rappture::VtkVolumeViewer::MotionLegend { x y } {
2345	Rappture::Tooltip::tooltip cancel
2346	set c $itk_component(view)
2347	SetLegendTip $x $y
2348	}
2349
2350	#
2351	# LeaveLegend --
2352	#
2353	itcl::body Rappture::VtkVolumeViewer::LeaveLegend { } {
2354	Rappture::Tooltip::tooltip cancel
2355	.rappturetooltip configure -icon ""
2356	}
2357
2358	#
2359	# SetLegendTip --
2360	#
2361	itcl::body Rappture::VtkVolumeViewer::SetLegendTip { x y } {
2362	set c $itk_component(view)
2363	set w [winfo width $c]
2364	set h [winfo height $c]
2365	set font "Arial 8"
2366	set lineht [font metrics $font -linespace]
2367
2368	set imgHeight [image height $_image(legend)]
2369	set coords [$c coords colormap]
2370	set imgX [expr $w - [image width $_image(legend)] - 2]
2371	set imgY [expr $y - 2 * ($lineht + 2)]
2372
2373	if { [info exists _fields($_title)] } {
2374	foreach { title units } $_fields($_title) break
2375	if { $units != "" } {
2376	set title [format "%s (%s)" $title $units]
2377	}
2378	} else {
2379	set title $_title
2380	}
2381	# Make a swatch of the selected color
2382	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2383	#puts stderr "out of range: $imgY"
2384	return
2385	}
2386	if { ![info exists _image(swatch)] } {
2387	set _image(swatch) [image create photo -width 24 -height 24]
2388	}
2389	set color [eval format "\#%02x%02x%02x" $pixel]
2390	$_image(swatch) put black -to 0 0 23 23
2391	$_image(swatch) put $color -to 1 1 22 22
2392	.rappturetooltip configure -icon $_image(swatch)
2393
2394	# Compute the value of the point
2395	if { [info exists _limits($_curFldName)] } {
2396	foreach { vmin vmax } $_limits($_curFldName) break
2397	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2398	set value [expr $t * ($vmax - $vmin) + $vmin]
2399	} else {
2400	set value 0.0
2401	}
2402	set tipx [expr $x + 15]
2403	set tipy [expr $y - 5]
2404	Rappture::Tooltip::text $c "$title $value"
2405	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2406	}
2407
2408	# ----------------------------------------------------------------------
2409	# USAGE: Slice move x\|y\|z <newval>
2410	#
2411	# Called automatically when the user drags the slider to move the
2412	# cut plane that slices 3D data. Gets the current value from the
2413	# slider and moves the cut plane to the appropriate point in the
2414	# data set.
2415	# ----------------------------------------------------------------------
2416	itcl::body Rappture::VtkVolumeViewer::Slice {option args} {
2417	switch -- $option {
2418	"move" {
2419	set axis [lindex $args 0]
2420	set newval [lindex $args 1]
2421	if {[llength $args] != 2} {
2422	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2423	}
2424	set newpos [expr {0.01*$newval}]
2425	SendCmd "$_cutplaneCmd slice $axis $newpos"
2426	}
2427	"tooltip" {
2428	set axis [lindex $args 0]
2429	set val [$itk_component(${axis}CutScale) get]
2430	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2431	}
2432	default {
2433	error "bad option \"$option\": should be axis, move, or tooltip"
2434	}
2435	}
2436	}
2437
2438	# ----------------------------------------------------------------------
2439	# USAGE: _dropdown post
2440	# USAGE: _dropdown unpost
2441	# USAGE: _dropdown select
2442	#
2443	# Used internally to handle the dropdown list for this combobox. The
2444	# post/unpost options are invoked when the list is posted or unposted
2445	# to manage the relief of the controlling button. The select option
2446	# is invoked whenever there is a selection from the list, to assign
2447	# the value back to the gauge.
2448	# ----------------------------------------------------------------------
2449	itcl::body Rappture::VtkVolumeViewer::Combo {option} {
2450	set c $itk_component(view)
2451	switch -- $option {
2452	post {
2453	foreach { x1 y1 x2 y2 } [$c bbox title] break
2454	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2455	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2456	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2457	tk_popup $itk_component(fieldmenu) $x $y
2458	}
2459	activate {
2460	$c itemconfigure title -fill red
2461	}
2462	deactivate {
2463	$c itemconfigure title -fill $itk_option(-plotforeground)
2464	}
2465	invoke {
2466	$itk_component(field) value $_curFldLabel
2467	AdjustSetting -field
2468	}
2469	default {
2470	error "bad option \"$option\": should be post, unpost, select"
2471	}
2472	}
2473	}
2474
2475	#
2476	# The -levels option takes a single value that represents the number
2477	# of evenly distributed markers based on the current data range. Each
2478	# marker is a relative value from 0.0 to 1.0.
2479	#
2480	itcl::body Rappture::VtkVolumeViewer::ParseLevelsOption { cname levels } {
2481	set c $itk_component(legend)
2482	set list {}
2483	regsub -all "," $levels " " levels
2484	if {[string is int $levels]} {
2485	for {set i 1} { $i <= $levels } {incr i} {
2486	lappend list [expr {double($i)/($levels+1)}]
2487	}
2488	} else {
2489	foreach x $levels {
2490	lappend list $x
2491	}
2492	}
2493	set _parsedFunction($cname) 1
2494	$_transferFunctionEditors($cname) addMarkers $list
2495	}
2496
2497	#
2498	# The -markers option takes a list of zero or more values (the values
2499	# may be separated either by spaces or commas) that have the following
2500	# format:
2501	#
2502	# N% Percent of current total data range. Converted to
2503	# to a relative value between 0.0 and 1.0.
2504	# N Absolute value of marker. If the marker is outside of
2505	# the current range, it will be displayed on the outer
2506	# edge of the legends, but it range it represents will
2507	# not be seen.
2508	#
2509	itcl::body Rappture::VtkVolumeViewer::ParseMarkersOption { cname markers } {
2510	set c $itk_component(legend)
2511	set list {}
2512	foreach { min max } $_limits($cname) break
2513	regsub -all "," $markers " " markers
2514	foreach marker $markers {
2515	set n [scan $marker "%g%s" value suffix]
2516	if { $n == 2 && $suffix == "%" } {
2517	# $n% : Set relative value (0..1).
2518	lappend list [expr {$value * 0.01}]
2519	} else {
2520	# $n : absolute value, compute relative
2521	lappend list [expr {(double($value)-$min)/($max-$min)]}
2522	}
2523	}
2524	set _parsedFunction($cname) 1
2525	$_transferFunctionEditors($cname) addMarkers $list
2526	}
2527
2528	#
2529	# SetInitialTransferFunction --
2530	#
2531	# Creates a transfer function name based on the <style> settings in the
2532	# library run.xml file. This placeholder will be used later to create
2533	# and send the actual transfer function once the data info has been sent
2534	# to us by the render server. [We won't know the volume limits until the
2535	# server parses the 3D data and sends back the limits via ReceiveData.]
2536	#
2537	itcl::body Rappture::VtkVolumeViewer::SetInitialTransferFunction { dataobj cname } {
2538	set tag $dataobj-$cname
2539	if { ![info exists _cname2transferFunction($cname)] } {
2540	ComputeTransferFunction $cname
2541	}
2542	set _dataset2style($tag) $cname
2543
2544	return $cname
2545	}
2546
2547	#
2548	# ComputeTransferFunction --
2549	#
2550	# Computes and sends the transfer function to the render server. It's
2551	# assumed that the volume data limits are known and that the global
2552	# transfer-functions slider values have been set up. Both parts are
2553	# needed to compute the relative value (location) of the marker, and
2554	# the alpha map of the transfer function.
2555	#
2556	itcl::body Rappture::VtkVolumeViewer::ComputeTransferFunction { cname } {
2557
2558	if { ![info exists _transferFunctionEditors($cname)] } {
2559	set _transferFunctionEditors($cname) \
2560	[Rappture::TransferFunctionEditor ::\#auto $itk_component(legend) \
2561	$cname \
2562	-command [itcl::code $this updateTransferFunctions]]
2563	}
2564
2565	# We have to parse the style attributes for a volume using this
2566	# transfer-function once. This sets up the initial isomarkers for the
2567	# transfer function. The user may add/delete markers, so we have to
2568	# maintain a list of markers for each transfer-function. We use the one
2569	# of the volumes (the first in the list) using the transfer-function as a
2570	# reference.
2571
2572	if { ![info exists _parsedFunction($cname)] \|\|
2573	![info exists _cname2transferFunction($cname)] } {
2574	array set style {
2575	-color BCGYR
2576	-alphamap ""
2577	-levels 6
2578	-markers ""
2579	}
2580	# Accumulate the style from all the datasets using it.
2581	foreach tag [GetDatasetsWithComponent $cname] {
2582	foreach {dataobj cname} [split [lindex $tag 0] -] break
2583	set option [lindex [$dataobj components -style $cname] 0]
2584	array set style $option
2585	}
2586	set _settings($cname-color) $style(-color)
2587	set cmap [ColorsToColormap $style(-color)]
2588	set _cname2defaultcolormap($cname) $cmap
2589	if { [info exists _transferFunctionEditors($cname)] } {
2590	eval $_transferFunctionEditors($cname) limits $_limits($cname)
2591	}
2592	if { [info exists style(-markers)] &&
2593	[llength $style(-markers)] > 0 } {
2594	ParseMarkersOption $cname $style(-markers)
2595	} else {
2596	ParseLevelsOption $cname $style(-levels)
2597	}
2598	if { $style(-alphamap) != "" } {
2599	set _alphamap($cname) $style(-alphamap)
2600	}
2601	} else {
2602	foreach {cmap amap} $_cname2transferFunction($cname) break
2603	}
2604	if { ![info exists _alphamap($cname)] } {
2605	set amap [ComputeAlphamap $cname]
2606	} else {
2607	set amap $_alphamap($cname)
2608	}
2609	set opaqueAmap "0.0 1.0 1.0 1.0"
2610	set _cname2transferFunction($cname) [list $cmap $amap]
2611	SendCmd [list colormap define $cname $cmap $amap]
2612	SendCmd [list colormap define $cname-opaque $cmap $opaqueAmap]
2613	}
2614
2615	#
2616	# ResetColormap --
2617	#
2618	# Changes only the colormap portion of the transfer function.
2619	#
2620	itcl::body Rappture::VtkVolumeViewer::ResetColormap { cname color } {
2621	# Get the current transfer function
2622	if { ![info exists _cname2transferFunction($cname)] } {
2623	return
2624	}
2625	foreach { cmap amap } $_cname2transferFunction($cname) break
2626	set cmap [GetColormap $cname $color]
2627	set _cname2transferFunction($cname) [list $cmap $amap]
2628	set opaqueAmap "0.0 1.0 1.0 1.0"
2629	SendCmd [list colormap define $cname $cmap $amap]
2630	SendCmd [list colormap define $cname-opaque $cmap $opaqueAmap]
2631	EventuallyRequestLegend
2632	}
2633
2634	# ----------------------------------------------------------------------
2635	# USAGE: updateTransferFunctions
2636	#
2637	# This is called by the transfer function editor whenever the
2638	# transfer function definition changes.
2639	#
2640	# ----------------------------------------------------------------------
2641	itcl::body Rappture::VtkVolumeViewer::updateTransferFunctions {} {
2642	foreach cname [array names _volcomponents] {
2643	ComputeTransferFunction $cname
2644	}
2645	EventuallyRequestLegend
2646	}
2647
2648	itcl::body Rappture::VtkVolumeViewer::AddNewMarker { x y } {
2649	if { ![info exists _transferFunctionEditors($_current)] } {
2650	continue
2651	}
2652	# Add a new marker to the current transfer function
2653	$_transferFunctionEditors($_current) newMarker $x $y normal
2654	}
2655
2656	itcl::body Rappture::VtkVolumeViewer::RemoveMarker { x y } {
2657	if { ![info exists _transferFunctionEditors($_current)] } {
2658	continue
2659	}
2660	# Add a new marker to the current transfer function
2661	$_transferFunctionEditors($_current) deleteMarker $x $y
2662	}
2663
2664	itcl::body Rappture::VtkVolumeViewer::SetOrientation { side } {
2665	array set positions {
2666	front "1 0 0 0"
2667	back "0 0 1 0"
2668	left "0.707107 0 -0.707107 0"
2669	right "0.707107 0 0.707107 0"
2670	top "0.707107 -0.707107 0 0"
2671	bottom "0.707107 0.707107 0 0"
2672	}
2673	foreach name { -qw -qx -qy -qz } value $positions($side) {
2674	set _view($name) $value
2675	}
2676	set q [ViewToQuaternion]
2677	$_arcball quaternion $q
2678	SendCmd "camera orient $q"
2679	SendCmd "camera reset"
2680	set _view(-xpan) 0
2681	set _view(-ypan) 0
2682	set _view(-zoom) 1.0
2683	}
2684
2685	#
2686	# InitComponentSettings --
2687	#
2688	# Initializes the volume settings for a specific component. This
2689	# should match what's used as global settings above. This
2690	# is called the first time we try to switch to a given component
2691	# in SwitchComponent below.
2692	#
2693	itcl::body Rappture::VtkVolumeViewer::InitComponentSettings { cname } {
2694	array set _settings [subst {
2695	$cname-color default
2696	$cname-volumeambient 40
2697	$cname-volumeblendmode composite
2698	$cname-volumediffuse 60
2699	$cname-volumelight2side 1
2700	$cname-volumelighting 1
2701	$cname-volumeopacity 50
2702	$cname-volumeoutline 0
2703	$cname-volumequality 80
2704	$cname-volumespecularexponent 90
2705	$cname-volumespecularlevel 30
2706	$cname-volumethickness 350
2707	$cname-volumevisible 1
2708	}]
2709	}
2710
2711	#
2712	# SwitchComponent --
2713	#
2714	# This is called when the current component is changed by the
2715	# dropdown menu in the volume tab. It synchronizes the global
2716	# volume settings with the settings of the new current component.
2717	#
2718	itcl::body Rappture::VtkVolumeViewer::SwitchComponent { cname } {
2719	if { ![info exists _settings(${cname}-volumeambient)] } {
2720	InitComponentSettings $cname
2721	}
2722	# _settings variables change widgets, except for colormap
2723	foreach name {
2724	-volumeambient
2725	-volumeblendmode
2726	-volumediffuse
2727	-volumelight2side
2728	-volumelighting
2729	-volumeopacity
2730	-volumeoutline
2731	-volumequality
2732	-volumespecularexponent
2733	-volumespecularlevel
2734	-volumethickness
2735	-volumevisible
2736	} {
2737	set _settings($name) $_settings(${cname}${name})
2738	}
2739	$itk_component(colormap) value $_settings($cname-color)
2740	set _current $cname; # Reset the current component
2741	}
2742
2743	itcl::body Rappture::VtkVolumeViewer::ComputeAlphamap { cname } {
2744	if { ![info exists _transferFunctionEditors($cname)] } {
2745	return [list 0.0 0.0 1.0 1.0]
2746	}
2747	if { ![info exists _settings($cname-volumeambient)] } {
2748	InitComponentSettings $cname
2749	}
2750
2751	set isovalues [$_transferFunctionEditors($cname) values]
2752
2753	# Currently using volume opacity to scale opacity in
2754	# the volume shader. The transfer function always sets full
2755	# opacity
2756	set max 1.0;
2757
2758	# Use the component-wise thickness setting from the slider
2759	# settings widget
2760	# Scale values between 0.00001 and 0.01000
2761	set delta [expr {double($_settings($cname-volumethickness)) * 0.0001}]
2762	set first [lindex $isovalues 0]
2763	set last [lindex $isovalues end]
2764	set amap ""
2765	if { $first == "" \|\| $first != 0.0 } {
2766	lappend amap 0.0 0.0
2767	}
2768	foreach x $isovalues {
2769	set x1 [expr {$x-$delta-0.00001}]
2770	set x2 [expr {$x-$delta}]
2771	set x3 [expr {$x+$delta}]
2772	set x4 [expr {$x+$delta+0.00001}]
2773	if { $x1 < 0.0 } {
2774	set x1 0.0
2775	} elseif { $x1 > 1.0 } {
2776	set x1 1.0
2777	}
2778	if { $x2 < 0.0 } {
2779	set x2 0.0
2780	} elseif { $x2 > 1.0 } {
2781	set x2 1.0
2782	}
2783	if { $x3 < 0.0 } {
2784	set x3 0.0
2785	} elseif { $x3 > 1.0 } {
2786	set x3 1.0
2787	}
2788	if { $x4 < 0.0 } {
2789	set x4 0.0
2790	} elseif { $x4 > 1.0 } {
2791	set x4 1.0
2792	}
2793	# add spikes in the middle
2794	lappend amap $x1 0.0
2795	lappend amap $x2 $max
2796	lappend amap $x3 $max
2797	lappend amap $x4 0.0
2798	}
2799	if { $last == "" \|\| $last != 1.0 } {
2800	lappend amap 1.0 0.0
2801	}
2802	return $amap
2803	}
2804
2805	#
2806	# HideAllMarkers --
2807	#
2808	# Hide all the markers in all the transfer functions. Can't simply
2809	# delete and recreate markers from the <style> since the user may
2810	# have create, deleted, or moved markers.
2811	#
2812	itcl::body Rappture::VtkVolumeViewer::HideAllMarkers {} {
2813	foreach cname [array names _transferFunctionEditors] {
2814	$_transferFunctionEditors($cname) hideMarkers
2815	}
2816	}
2817
2818	#
2819	# GetDatasetsWithComponents --
2820	#
2821	# Returns a list of all the datasets (known by the combination of
2822	# their data object and component name) that match the given
2823	# component name. For example, this is used where we want to change
2824	# the settings of volumes that have the current component.
2825	#
2826	itcl::body Rappture::VtkVolumeViewer::GetDatasetsWithComponent { cname } {
2827	if { ![info exists _volcomponents($cname)] } {
2828	return ""
2829	}
2830	return $_volcomponents($cname)
2831	}
2832
2833	#
2834	# BuildVolumeComponents --
2835	#
2836	# This is called from the "scale" method which is called when a
2837	# new dataset is added or deleted. It repopulates the dropdown
2838	# menu of volume component names. It sets the current component
2839	# to the first component in the list (of components found).
2840	# Finally, if there is only one component, don't display the
2841	# label or the combobox in the volume settings tab.
2842	#
2843	itcl::body Rappture::VtkVolumeViewer::BuildVolumeComponents {} {
2844	$itk_component(volcomponents) choices delete 0 end
2845	foreach name $_componentsList {
2846	$itk_component(volcomponents) choices insert end $name $name
2847	}
2848	set _current [lindex $_componentsList 0]
2849	$itk_component(volcomponents) value $_current
2850	set parent [winfo parent $itk_component(volcomponents)]
2851	if { [llength $_componentsList] <= 1 } {
2852	# Unpack the components label and dropdown if there's only one
2853	# component.
2854	catch {blt::table forget $parent.volcomponents_l $parent.volcomponents}
2855	} else {
2856	# Pack the components label and dropdown into the table there's
2857	# more than one component to select.
2858	blt::table $parent \
2859	0,0 $parent.volcomponents_l -anchor e -cspan 2 \
2860	0,2 $parent.volcomponents -cspan 3 -fill x
2861	}
2862	}
2863
2864	itcl::body Rappture::VtkVolumeViewer::GetColormap { cname color } {
2865	if { $color == "default" } {
2866	return $_cname2defaultcolormap($cname)
2867	}
2868	return [ColorsToColormap $color]
2869	}

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