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source: branches/uq/gui/scripts/vtkisosurfaceviewer.tcl @ 4798

Last change on this file since 4798 was 4798, checked in by gah, 10 years ago
sync with former 1.3 branch
File size: 89.7 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkisosurfaceviewer - Vtk 3D contour object viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2005 Purdue Research Foundation
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 *VtkIsosurfaceViewer.width 4i widgetDefault
19	option add VtkIsosurfaceViewercursor crosshair widgetDefault
20	option add *VtkIsosurfaceViewer.height 4i widgetDefault
21	option add *VtkIsosurfaceViewer.foreground black widgetDefault
22	option add *VtkIsosurfaceViewer.controlBackground gray widgetDefault
23	option add *VtkIsosurfaceViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkIsosurfaceViewer.plotBackground black widgetDefault
25	option add *VtkIsosurfaceViewer.plotForeground white widgetDefault
26	option add *VtkIsosurfaceViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkIsosurfaceViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkIsosurfaceViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkIsosurfaceViewer {
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 limits { colormap }
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66
67	private method AdjustSetting {what {value ""}}
68	private method BuildAxisTab {}
69	private method BuildCameraTab {}
70	private method BuildColormap { name }
71	private method BuildCutplaneTab {}
72	private method BuildDownloadPopup { widget command }
73	private method BuildIsosurfaceTab {}
74	private method Combo { option }
75	private method Connect {}
76	private method CurrentDatasets {args}
77	private method Disconnect {}
78	private method DoChangeContourLevels {}
79	private method DoResize {}
80	private method DoRotate {}
81	private method DrawLegend {}
82	private method EnterLegend { x y }
83	private method EventuallyChangeContourLevels {}
84	private method EventuallyRequestLegend {}
85	private method EventuallyResize { w h }
86	private method EventuallyRotate { q }
87	private method EventuallySetCutplane { axis args }
88	private method GenerateContourList {}
89	private method GetImage { args }
90	private method GetVtkData { args }
91	private method InitSettings { args }
92	private method IsValidObject { dataobj }
93	private method LeaveLegend {}
94	private method MotionLegend { x y }
95	private method Pan {option x y}
96	private method PanCamera {}
97	private method Pick {x y}
98	private method Rebuild {}
99	private method ReceiveDataset { args }
100	private method ReceiveImage { args }
101	private method ReceiveLegend { colormap title vmin vmax size }
102	private method RequestLegend {}
103	private method Rotate {option x y}
104	private method SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method SetCurrentFieldName { dataobj }
108	private method SetOrientation { side }
109	private method Slice {option args}
110	private method Zoom {option}
111	private method ViewToQuaternion {} {
112	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
113	}
114
115	private variable _arcball ""
116
117	private variable _dlist "" ; # list of data objects
118	private variable _obj2datasets
119	private variable _obj2ovride ; # maps dataobj => style override
120	private variable _datasets ; # contains all the dataobj-component
121	; # datasets in the server
122	private variable _colormaps ; # contains all the colormaps
123	; # in the server.
124	# The name of the current colormap used. The colormap is global to all
125	# heightmaps displayed.
126	private variable _currentColormap ""
127	private variable _currentNumContours -1
128
129	private variable _dataset2style ;# maps dataobj-component to transfunc
130
131	private variable _click ; # info used for rotate operations
132	private variable _limits ; # autoscale min/max for all axes
133	private variable _view ; # view params for 3D view
134	private variable _settings
135	private variable _style; # Array of current component styles.
136	private variable _changed
137	private variable _initialStyle; # Array of initial component styles.
138	private variable _reset 1; # indicates if camera needs to be reset
139	# to starting position.
140
141	private variable _first "" ; # This is the topmost dataset.
142	private variable _start 0
143	private variable _title ""
144	private variable _isolines
145	private variable _contourList
146	private variable _currentLimits ""
147	private variable _widget
148
149	common _downloadPopup; # download options from popup
150	private common _hardcopy
151	private variable _width 0
152	private variable _height 0
153	private variable _resizePending 0
154	private variable _rotatePending 0
155	private variable _cutplanePending 0
156	private variable _legendPending 0
157	private variable _field ""
158	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
159	private variable _fieldNames {}
160	private variable _fields
161	private variable _curFldName ""
162	private variable _curFldLabel ""
163	}
164
165	itk::usual VtkIsosurfaceViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
174	package require vtk
175	set _serverType "vtkvis"
176
177	# Rebuild event
178	$_dispatcher register !rebuild
179	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
180
181	# Resize event
182	$_dispatcher register !resize
183	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
184
185	# Rotate event
186	$_dispatcher register !rotate
187	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
188
189	# Legend event
190	$_dispatcher register !legend
191	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
192
193	# Contour levels event
194	$_dispatcher register !contours
195	$_dispatcher dispatch $this !contours \
196	"[itcl::code $this DoChangeContourLevels]; list"
197
198	# X-Cutplane event
199	$_dispatcher register !xcutplane
200	$_dispatcher dispatch $this !xcutplane \
201	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
202
203	# Y-Cutplane event
204	$_dispatcher register !ycutplane
205	$_dispatcher dispatch $this !ycutplane \
206	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
207
208	# Z-Cutplane event
209	$_dispatcher register !zcutplane
210	$_dispatcher dispatch $this !zcutplane \
211	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
212
213	#
214	# Populate parser with commands handle incoming requests
215	#
216	$_parser alias image [itcl::code $this ReceiveImage]
217	$_parser alias dataset [itcl::code $this ReceiveDataset]
218	$_parser alias legend [itcl::code $this ReceiveLegend]
219
220	# Initialize the view to some default parameters.
221	array set _view {
222	-ortho 0
223	-qw 0.853553
224	-qx -0.353553
225	-qy 0.353553
226	-qz 0.146447
227	-xpan 0
228	-ypan 0
229	-zoom 1.0
230	}
231	set _arcball [blt::arcball create 100 100]
232	$_arcball quaternion [ViewToQuaternion]
233
234	array set _contourList {
235	numLevels 10
236	reqValues ""
237	updatePending 0
238	values ""
239	}
240	array set _settings {
241	-axesvisible 1
242	-axislabelsvisible 1
243	-axismode "static"
244	-background black
245	-colormap BCGYR
246	-colormapvisible 1
247	-cutplaneedges 0
248	-cutplanelighting 1
249	-cutplaneopacity 1.0
250	-cutplanepreinterp 1
251	-cutplanesvisible 0
252	-cutplanewireframe 0
253	-field "Default"
254	-isolinecolor white
255	-isosurfaceedges 0
256	-isosurfacelighting 1
257	-isosurfaceopacity 0.6
258	-isosurfacevisible 1
259	-isosurfacewireframe 0
260	-legendvisible 1
261	-numcontours 10
262	-outline 0
263	-xcutplaneposition 50
264	-xcutplanevisible 1
265	-xgrid 0
266	-ycutplaneposition 50
267	-ycutplanevisible 1
268	-ygrid 0
269	-zcutplaneposition 50
270	-zcutplanevisible 1
271	-zgrid 0
272	}
273	array set _changed {
274	-colormap 0
275	-isosurfaceopacity 0
276	-cutplaneopacity 0
277	-numcontours 0
278	}
279	array set _widget {
280	-isosurfaceopacity 60
281	-cutplaneopacity 100
282	}
283
284	itk_component add view {
285	canvas $itk_component(plotarea).view \
286	-highlightthickness 0 -borderwidth 0
287	} {
288	usual
289	ignore -highlightthickness -borderwidth -background
290	}
291
292	itk_component add fieldmenu {
293	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
294	-tearoff 0
295	} {
296	usual
297	ignore -background -foreground -relief -tearoff
298	}
299	set c $itk_component(view)
300	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
301	bind $c <4> [itcl::code $this Zoom in 0.25]
302	bind $c <5> [itcl::code $this Zoom out 0.25]
303	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
304	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
305	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
306	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
307	bind $c <Enter> "focus %W"
308	bind $c <Control-F1> [itcl::code $this ToggleConsole]
309
310	# Fix the scrollregion in case we go off screen
311	$c configure -scrollregion [$c bbox all]
312
313	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
314	set _map(cwidth) -1
315	set _map(cheight) -1
316	set _map(zoom) 1.0
317	set _map(original) ""
318
319	set f [$itk_component(main) component controls]
320	itk_component add reset {
321	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
322	-highlightthickness 0 \
323	-image [Rappture::icon reset-view] \
324	-command [itcl::code $this Zoom reset]
325	} {
326	usual
327	ignore -highlightthickness
328	}
329	pack $itk_component(reset) -side top -padx 2 -pady 2
330	Rappture::Tooltip::for $itk_component(reset) \
331	"Reset the view to the default zoom level"
332
333	itk_component add zoomin {
334	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
335	-highlightthickness 0 \
336	-image [Rappture::icon zoom-in] \
337	-command [itcl::code $this Zoom in]
338	} {
339	usual
340	ignore -highlightthickness
341	}
342	pack $itk_component(zoomin) -side top -padx 2 -pady 2
343	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
344
345	itk_component add zoomout {
346	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
347	-highlightthickness 0 \
348	-image [Rappture::icon zoom-out] \
349	-command [itcl::code $this Zoom out]
350	} {
351	usual
352	ignore -highlightthickness
353	}
354	pack $itk_component(zoomout) -side top -padx 2 -pady 2
355	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
356
357	itk_component add contour {
358	Rappture::PushButton $f.contour \
359	-onimage [Rappture::icon volume-on] \
360	-offimage [Rappture::icon volume-off] \
361	-variable [itcl::scope _settings(-isosurfacevisible)] \
362	-command [itcl::code $this AdjustSetting -isosurfacevisible]
363	}
364	$itk_component(contour) select
365	Rappture::Tooltip::for $itk_component(contour) \
366	"Hide the isosurface"
367	pack $itk_component(contour) -padx 2 -pady 2
368
369	itk_component add cutplane {
370	Rappture::PushButton $f.cutplane \
371	-onimage [Rappture::icon cutbutton] \
372	-offimage [Rappture::icon cutbutton] \
373	-variable [itcl::scope _settings(-cutplanesvisible)] \
374	-command [itcl::code $this AdjustSetting -cutplanesvisible]
375	}
376	Rappture::Tooltip::for $itk_component(cutplane) \
377	"Show the cutplanes"
378	pack $itk_component(cutplane) -padx 2 -pady 2
379
380
381	if { [catch {
382	BuildIsosurfaceTab
383	BuildCutplaneTab
384	BuildAxisTab
385	BuildCameraTab
386	} errs] != 0 } {
387	puts stderr errs=$errs
388	}
389	# Legend
390
391	set _image(legend) [image create photo]
392	itk_component add legend {
393	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
394	} {
395	usual
396	ignore -highlightthickness
397	rename -background -plotbackground plotBackground Background
398	}
399
400	# Hack around the Tk panewindow. The problem is that the requested
401	# size of the 3d view isn't set until an image is retrieved from
402	# the server. So the panewindow uses the tiny size.
403	set w 10000
404	pack forget $itk_component(view)
405	blt::table $itk_component(plotarea) \
406	0,0 $itk_component(view) -fill both -reqwidth $w
407	blt::table configure $itk_component(plotarea) c1 -resize none
408
409	# Bindings for rotation via mouse
410	bind $itk_component(view) <ButtonPress-1> \
411	[itcl::code $this Rotate click %x %y]
412	bind $itk_component(view) <B1-Motion> \
413	[itcl::code $this Rotate drag %x %y]
414	bind $itk_component(view) <ButtonRelease-1> \
415	[itcl::code $this Rotate release %x %y]
416
417	# Bindings for panning via mouse
418	bind $itk_component(view) <ButtonPress-2> \
419	[itcl::code $this Pan click %x %y]
420	bind $itk_component(view) <B2-Motion> \
421	[itcl::code $this Pan drag %x %y]
422	bind $itk_component(view) <ButtonRelease-2> \
423	[itcl::code $this Pan release %x %y]
424
425	#bind $itk_component(view) <ButtonRelease-3> \
426	# [itcl::code $this Pick %x %y]
427
428	# Bindings for panning via keyboard
429	bind $itk_component(view) <KeyPress-Left> \
430	[itcl::code $this Pan set -10 0]
431	bind $itk_component(view) <KeyPress-Right> \
432	[itcl::code $this Pan set 10 0]
433	bind $itk_component(view) <KeyPress-Up> \
434	[itcl::code $this Pan set 0 -10]
435	bind $itk_component(view) <KeyPress-Down> \
436	[itcl::code $this Pan set 0 10]
437	bind $itk_component(view) <Shift-KeyPress-Left> \
438	[itcl::code $this Pan set -2 0]
439	bind $itk_component(view) <Shift-KeyPress-Right> \
440	[itcl::code $this Pan set 2 0]
441	bind $itk_component(view) <Shift-KeyPress-Up> \
442	[itcl::code $this Pan set 0 -2]
443	bind $itk_component(view) <Shift-KeyPress-Down> \
444	[itcl::code $this Pan set 0 2]
445
446	# Bindings for zoom via keyboard
447	bind $itk_component(view) <KeyPress-Prior> \
448	[itcl::code $this Zoom out]
449	bind $itk_component(view) <KeyPress-Next> \
450	[itcl::code $this Zoom in]
451
452	bind $itk_component(view) <Enter> "focus $itk_component(view)"
453
454	if {[string equal "x11" [tk windowingsystem]]} {
455	# Bindings for zoom via mouse
456	bind $itk_component(view) <4> [itcl::code $this Zoom out]
457	bind $itk_component(view) <5> [itcl::code $this Zoom in]
458	}
459
460	set _image(download) [image create photo]
461
462	eval itk_initialize $args
463
464	EnableWaitDialog 500
465	Connect
466	}
467
468	# ----------------------------------------------------------------------
469	# DESTRUCTOR
470	# ----------------------------------------------------------------------
471	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
472	Disconnect
473	image delete $_image(plot)
474	image delete $_image(download)
475	catch { blt::arcball destroy $_arcball }
476	}
477
478	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
479	if { $_width < 2 } {
480	set _width 500
481	}
482	if { $_height < 2 } {
483	set _height 500
484	}
485	set _start [clock clicks -milliseconds]
486	SendCmd "screen size $_width $_height"
487
488	EventuallyRequestLegend
489	set _resizePending 0
490	}
491
492	itcl::body Rappture::VtkIsosurfaceViewer::DoChangeContourLevels {} {
493	GenerateContourList
494	SendCmd [list contour3d contourlist $_contourList(values)]
495	SendCmd [list camera reset]
496	DrawLegend
497	set _contourList(updatePending) 0
498	}
499
500	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
501	SendCmd "camera orient [ViewToQuaternion]"
502	set _rotatePending 0
503	}
504
505	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
506	if { !$_legendPending } {
507	set _legendPending 1
508	$_dispatcher event -idle !legend
509	}
510	}
511
512	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
513	set _width $w
514	set _height $h
515	$_arcball resize $w $h
516	if { !$_resizePending } {
517	set _resizePending 1
518	$_dispatcher event -after 400 !resize
519	}
520	}
521
522	set rotate_delay 100
523
524	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
525	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
526	if { !$_rotatePending } {
527	set _rotatePending 1
528	global rotate_delay
529	$_dispatcher event -after $rotate_delay !rotate
530	}
531	}
532
533	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
534	if { !$_cutplanePending } {
535	set _cutplanePending 1
536	$_dispatcher event -after 100 !${axis}cutplane
537	}
538	}
539
540	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyChangeContourLevels {} {
541	set n $_contourList(numLevels)
542	set _contourList(values) ""
543	if { !$_contourList(updatePending) } {
544	set _contourList(updatePending) 1
545	global rotate_delay
546	$_dispatcher event -after $rotate_delay !contours
547	}
548	}
549
550	# ----------------------------------------------------------------------
551	# USAGE: add <dataobj> ?<settings>?
552	#
553	# Clients use this to add a data object to the plot. The optional
554	# <settings> are used to configure the plot. Allowed settings are
555	# -color, -brightness, -width, -linestyle, and -raise.
556	# ----------------------------------------------------------------------
557	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
558	if { ![$dataobj isvalid] } {
559	return; # Object doesn't contain valid data.
560	}
561	array set params {
562	-color auto
563	-width 1
564	-linestyle solid
565	-brightness 0
566	-raise 0
567	-description ""
568	-param ""
569	-type ""
570	}
571	array set params $settings
572	set params(-description) ""
573	set params(-param) ""
574	array set params $settings
575
576	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
577	# can't handle -autocolors yet
578	set params(-color) black
579	}
580	set pos [lsearch -exact $_dlist $dataobj]
581	if {$pos < 0} {
582	lappend _dlist $dataobj
583	}
584	set _obj2ovride($dataobj-color) $params(-color)
585	set _obj2ovride($dataobj-width) $params(-width)
586	set _obj2ovride($dataobj-raise) $params(-raise)
587	$_dispatcher event -idle !rebuild
588	}
589
590
591	# ----------------------------------------------------------------------
592	# USAGE: delete ?<dataobj1> <dataobj2> ...?
593	#
594	# Clients use this to delete a dataobj from the plot. If no dataobjs
595	# are specified, then all dataobjs are deleted. No data objects are
596	# deleted. They are only removed from the display list.
597	#
598	# ----------------------------------------------------------------------
599	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
600	if { [llength $args] == 0} {
601	set args $_dlist
602	}
603	# Delete all specified dataobjs
604	set changed 0
605	foreach dataobj $args {
606	set pos [lsearch -exact $_dlist $dataobj]
607	if { $pos < 0 } {
608	continue; # Don't know anything about it.
609	}
610	# Remove it from the dataobj list.
611	set _dlist [lreplace $_dlist $pos $pos]
612	array unset _obj2ovride $dataobj-*
613	array unset _settings $dataobj-*
614	set changed 1
615	}
616	# If anything changed, then rebuild the plot
617	if { $changed } {
618	$_dispatcher event -idle !rebuild
619	}
620	}
621
622	# ----------------------------------------------------------------------
623	# USAGE: get ?-objects?
624	# USAGE: get ?-visible?
625	# USAGE: get ?-image view?
626	#
627	# Clients use this to query the list of objects being plotted, in
628	# order from bottom to top of this result. The optional "-image"
629	# flag can also request the internal images being shown.
630	# ----------------------------------------------------------------------
631	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
632	if {[llength $args] == 0} {
633	set args "-objects"
634	}
635
636	set op [lindex $args 0]
637	switch -- $op {
638	"-objects" {
639	# put the dataobj list in order according to -raise options
640	set dlist {}
641	foreach dataobj $_dlist {
642	if { ![IsValidObject $dataobj] } {
643	continue
644	}
645	if {[info exists _obj2ovride($dataobj-raise)] &&
646	$_obj2ovride($dataobj-raise)} {
647	set dlist [linsert $dlist 0 $dataobj]
648	} else {
649	lappend dlist $dataobj
650	}
651	}
652	return $dlist
653	}
654	"-visible" {
655	set dlist {}
656	foreach dataobj $_dlist {
657	if { ![IsValidObject $dataobj] } {
658	continue
659	}
660	if { ![info exists _obj2ovride($dataobj-raise)] } {
661	# No setting indicates that the object isn't visible.
662	continue
663	}
664	# Otherwise use the -raise parameter to put the object to
665	# the front of the list.
666	if { $_obj2ovride($dataobj-raise) } {
667	set dlist [linsert $dlist 0 $dataobj]
668	} else {
669	lappend dlist $dataobj
670	}
671	}
672	return $dlist
673	}
674	-image {
675	if {[llength $args] != 2} {
676	error "wrong # args: should be \"get -image view\""
677	}
678	switch -- [lindex $args end] {
679	view {
680	return $_image(plot)
681	}
682	default {
683	error "bad image name \"[lindex $args end]\": should be view"
684	}
685	}
686	}
687	default {
688	error "bad option \"$op\": should be -objects or -image"
689	}
690	}
691	}
692
693	# ----------------------------------------------------------------------
694	# USAGE: scale ?<data1> <data2> ...?
695	#
696	# Sets the default limits for the overall plot according to the
697	# limits of the data for all of the given <data> objects. This
698	# accounts for all objects--even those not showing on the screen.
699	# Because of this, the limits are appropriate for all objects as
700	# the user scans through data in the ResultSet viewer.
701	# ----------------------------------------------------------------------
702	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
703	foreach dataobj $args {
704	if { ![$dataobj isvalid] } {
705	continue; # Object doesn't contain valid data.
706	}
707	foreach axis { x y z } {
708	set lim [$dataobj limits $axis]
709	if { ![info exists _limits($axis)] } {
710	set _limits($axis) $lim
711	continue
712	}
713	foreach {min max} $lim break
714	foreach {amin amax} $_limits($axis) break
715	if { $amin > $min } {
716	set amin $min
717	}
718	if { $amax < $max } {
719	set amax $max
720	}
721	set _limits($axis) [list $amin $amax]
722	}
723	foreach { fname lim } [$dataobj fieldlimits] {
724	if { ![info exists _limits($fname)] } {
725	set _limits($fname) $lim
726	continue
727	}
728	foreach {min max} $lim break
729	foreach {fmin fmax} $_limits($fname) break
730	if { $fmin > $min } {
731	set fmin $min
732	}
733	if { $fmax < $max } {
734	set fmax $max
735	}
736	set _limits($fname) [list $fmin $fmax]
737	}
738	}
739	}
740
741	# ----------------------------------------------------------------------
742	# USAGE: download coming
743	# USAGE: download controls <downloadCommand>
744	# USAGE: download now
745	#
746	# Clients use this method to create a downloadable representation
747	# of the plot. Returns a list of the form {ext string}, where
748	# "ext" is the file extension (indicating the type of data) and
749	# "string" is the data itself.
750	# ----------------------------------------------------------------------
751	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
752	switch $option {
753	coming {
754	if {[catch {
755	blt::winop snap $itk_component(plotarea) $_image(download)
756	}]} {
757	$_image(download) configure -width 1 -height 1
758	$_image(download) put #000000
759	}
760	}
761	controls {
762	set popup .vtkviewerdownload
763	if { ![winfo exists .vtkviewerdownload] } {
764	set inner [BuildDownloadPopup $popup [lindex $args 0]]
765	} else {
766	set inner [$popup component inner]
767	}
768	set _downloadPopup(image_controls) $inner.image_frame
769	set num [llength [get]]
770	set num [expr {($num == 1) ? "1 result" : "$num results"}]
771	set word [Rappture::filexfer::label downloadWord]
772	$inner.summary configure -text "$word $num in the following format:"
773	update idletasks ;# Fix initial sizes
774	return $popup
775	}
776	now {
777	set popup .vtkviewerdownload
778	if {[winfo exists .vtkviewerdownload]} {
779	$popup deactivate
780	}
781	switch -- $_downloadPopup(format) {
782	"image" {
783	return [$this GetImage [lindex $args 0]]
784	}
785	"vtk" {
786	return [$this GetVtkData [lindex $args 0]]
787	}
788	}
789	return ""
790	}
791	default {
792	error "bad option \"$option\": should be coming, controls, now"
793	}
794	}
795	}
796
797	# ----------------------------------------------------------------------
798	# USAGE: Connect ?<host:port>,<host:port>...?
799	#
800	# Clients use this method to establish a connection to a new
801	# server, or to reestablish a connection to the previous server.
802	# Any existing connection is automatically closed.
803	# ----------------------------------------------------------------------
804	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
805	set _hosts [GetServerList "vtkvis"]
806	if { "" == $_hosts } {
807	return 0
808	}
809	set result [VisViewer::Connect $_hosts]
810	if { $result } {
811	if { $_reportClientInfo } {
812	# Tell the server the viewer, hub, user and session.
813	# Do this immediately on connect before buffering any commands
814	global env
815
816	set info {}
817	set user "???"
818	if { [info exists env(USER)] } {
819	set user $env(USER)
820	}
821	set session "???"
822	if { [info exists env(SESSION)] } {
823	set session $env(SESSION)
824	}
825	lappend info "version" "$Rappture::version"
826	lappend info "build" "$Rappture::build"
827	lappend info "svnurl" "$Rappture::svnurl"
828	lappend info "installdir" "$Rappture::installdir"
829	lappend info "hub" [exec hostname]
830	lappend info "client" "vtkisosurfaceviewer"
831	lappend info "user" $user
832	lappend info "session" $session
833	SendCmd "clientinfo [list $info]"
834	}
835
836	set w [winfo width $itk_component(view)]
837	set h [winfo height $itk_component(view)]
838	EventuallyResize $w $h
839	}
840	return $result
841	}
842
843	#
844	# isconnected --
845	#
846	# Indicates if we are currently connected to the visualization server.
847	#
848	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
849	return [VisViewer::IsConnected]
850	}
851
852	#
853	# disconnect --
854	#
855	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
856	Disconnect
857	set _reset 1
858	}
859
860	#
861	# Disconnect --
862	#
863	# Clients use this method to disconnect from the current rendering
864	# server.
865	#
866	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
867	VisViewer::Disconnect
868
869	$_dispatcher cancel !rebuild
870	$_dispatcher cancel !resize
871	$_dispatcher cancel !rotate
872	$_dispatcher cancel !xcutplane
873	$_dispatcher cancel !ycutplane
874	$_dispatcher cancel !zcutplane
875	$_dispatcher cancel !legend
876	# disconnected -- no more data sitting on server
877	set _outbuf ""
878	array unset _datasets
879	array unset _data
880	array unset _colormaps
881	array unset _dataset2style
882	array unset _obj2datasets
883	}
884
885	# ----------------------------------------------------------------------
886	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
887	#
888	# Invoked automatically whenever the "image" command comes in from
889	# the rendering server. Indicates that binary image data with the
890	# specified <size> will follow.
891	# ----------------------------------------------------------------------
892	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
893	array set info {
894	-token "???"
895	-bytes 0
896	-type image
897	}
898	array set info $args
899	set bytes [ReceiveBytes $info(-bytes)]
900	if { $info(-type) == "image" } {
901	if 0 {
902	set f [open "last.ppm" "w"]
903	puts $f $bytes
904	close $f
905	}
906	$_image(plot) configure -data $bytes
907	#set time [clock seconds]
908	#set date [clock format $time]
909	#set w [image width $_image(plot)]
910	#set h [image height $_image(plot)]
911	#puts stderr "$date: received image ${w}x${h} image"
912	if { $_start > 0 } {
913	set finish [clock clicks -milliseconds]
914	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
915	set _start 0
916	}
917	} elseif { $info(type) == "print" } {
918	set tag $this-print-$info(-token)
919	set _hardcopy($tag) $bytes
920	}
921	}
922
923	#
924	# ReceiveDataset --
925	#
926	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
927	if { ![isconnected] } {
928	return
929	}
930	set option [lindex $args 0]
931	switch -- $option {
932	"scalar" {
933	set option [lindex $args 1]
934	switch -- $option {
935	"world" {
936	foreach { x y z value tag } [lrange $args 2 end] break
937	}
938	"pixel" {
939	foreach { x y value tag } [lrange $args 2 end] break
940	}
941	}
942	}
943	"vector" {
944	set option [lindex $args 1]
945	switch -- $option {
946	"world" {
947	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
948	}
949	"pixel" {
950	foreach { x y vx vy vz tag } [lrange $args 2 end] break
951	}
952	}
953	}
954	"names" {
955	foreach { name } [lindex $args 1] {
956	#puts stderr "Dataset: $name"
957	}
958	}
959	default {
960	error "unknown dataset option \"$option\" from server"
961	}
962	}
963	}
964
965	# ----------------------------------------------------------------------
966	# USAGE: Rebuild
967	#
968	# Called automatically whenever something changes that affects the
969	# data in the widget. Clears any existing data and rebuilds the
970	# widget to display new data.
971	# ----------------------------------------------------------------------
972	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
973	set w [winfo width $itk_component(view)]
974	set h [winfo height $itk_component(view)]
975	if { $w < 2 \|\| $h < 2 } {
976	$_dispatcher event -idle !rebuild
977	return
978	}
979
980	# Turn on buffering of commands to the server. We don't want to
981	# be preempted by a server disconnect/reconnect (which automatically
982	# generates a new call to Rebuild).
983	StartBufferingCommands
984	if { $_reset } {
985	set _width $w
986	set _height $h
987	$_arcball resize $w $h
988	DoResize
989
990	# Reset the camera and other view parameters
991	$_arcball quaternion [ViewToQuaternion]
992	DoRotate
993	PanCamera
994	set _first ""
995	InitSettings -xgrid -ygrid -zgrid -axismode \
996	-axesvisible -axislabelsvisible -ortho
997	SendCmd "axis lformat all %g"
998	# Too many major ticks, so turn off minor ticks
999	SendCmd "axis minticks all 0"
1000	StopBufferingCommands
1001	SendCmd "imgflush"
1002	StartBufferingCommands
1003	}
1004	set _first ""
1005	SendCmd "dataset visible 0"
1006	eval scale $_dlist
1007	foreach dataobj [get -objects] {
1008	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
1009	set _first $dataobj
1010	SetCurrentFieldName $dataobj
1011	}
1012	set _obj2datasets($dataobj) ""
1013	foreach comp [$dataobj components] {
1014	set tag $dataobj-$comp
1015	if { ![info exists _datasets($tag)] } {
1016	set bytes [$dataobj vtkdata $comp]
1017	if 0 {
1018	set f [open "/tmp/isosurface.vtk" "w"]
1019	puts $f $bytes
1020	close $f
1021	}
1022	set length [string length $bytes]
1023	if { $_reportClientInfo } {
1024	set info {}
1025	lappend info "tool_id" [$dataobj hints toolId]
1026	lappend info "tool_name" [$dataobj hints toolName]
1027	lappend info "tool_version" [$dataobj hints toolRevision]
1028	lappend info "tool_title" [$dataobj hints toolTitle]
1029	lappend info "dataset_label" [$dataobj hints label]
1030	lappend info "dataset_size" $length
1031	lappend info "dataset_tag" $tag
1032	SendCmd "clientinfo [list $info]"
1033	}
1034	SendCmd "dataset add $tag data follows $length"
1035	append _outbuf $bytes
1036	set _datasets($tag) 1
1037	SetObjectStyle $dataobj $comp
1038	}
1039	lappend _obj2datasets($dataobj) $tag
1040	if { [info exists _obj2ovride($dataobj-raise)] } {
1041	SendCmd "contour3d visible 1 $tag"
1042	}
1043	}
1044	}
1045
1046	InitSettings -cutplanesvisible -isosurfacevisible -outline
1047	if { $_reset } {
1048	# These are settings that rely on a dataset being loaded.
1049	InitSettings \
1050	-isosurfacelighting \
1051	-field \
1052	-isosurfacevisible \
1053	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
1054	-isosurfacewireframe \
1055	-cutplanesvisible \
1056	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1057	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1058	-cutplanepreinterp -numcontours
1059
1060	Zoom reset
1061	foreach axis { x y z } {
1062	# Another problem fixed by a <view>. We looking into a data
1063	# object for the name of the axes. This should be global to
1064	# the viewer itself.
1065	set label [$_first hints ${axis}label]
1066	if { $label == "" } {
1067	set label [string toupper $axis]
1068	}
1069	SendCmd [list axis name $axis $label]
1070	}
1071	if { [array size _fields] < 2 } {
1072	catch {
1073	blt::table forget $itk_component(field) $itk_component(field_l)
1074	}
1075	}
1076	set _reset 0
1077	}
1078	# Redraw the legend even if we're using the same colormap. The position
1079	# of the isolines may have changed because the range of data changed.
1080	DrawLegend
1081
1082	# Actually write the commands to the server socket. If it fails, we don't
1083	# care. We're finished here.
1084	blt::busy hold $itk_component(hull)
1085	StopBufferingCommands; # Turn off buffering and send commands.
1086	blt::busy release $itk_component(hull)
1087	}
1088
1089	# ----------------------------------------------------------------------
1090	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1091	#
1092	# Returns a list of server IDs for the current datasets being displayed. This
1093	# is normally a single ID, but it might be a list of IDs if the current data
1094	# object has multiple components.
1095	# ----------------------------------------------------------------------
1096	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1097	set flag [lindex $args 0]
1098	switch -- $flag {
1099	"-all" {
1100	if { [llength $args] > 1 } {
1101	error "CurrentDatasets: can't specify dataobj after \"-all\""
1102	}
1103	set dlist [get -objects]
1104	}
1105	"-visible" {
1106	if { [llength $args] > 1 } {
1107	set dlist {}
1108	set args [lrange $args 1 end]
1109	foreach dataobj $args {
1110	if { [info exists _obj2ovride($dataobj-raise)] } {
1111	lappend dlist $dataobj
1112	}
1113	}
1114	} else {
1115	set dlist [get -visible]
1116	}
1117	}
1118	default {
1119	set dlist $args
1120	}
1121	}
1122	set rlist ""
1123	foreach dataobj $dlist {
1124	foreach comp [$dataobj components] {
1125	set tag $dataobj-$comp
1126	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1127	lappend rlist $tag
1128	}
1129	}
1130	}
1131	return $rlist
1132	}
1133
1134	# ----------------------------------------------------------------------
1135	# USAGE: Zoom in
1136	# USAGE: Zoom out
1137	# USAGE: Zoom reset
1138	#
1139	# Called automatically when the user clicks on one of the zoom
1140	# controls for this widget. Changes the zoom for the current view.
1141	# ----------------------------------------------------------------------
1142	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1143	switch -- $option {
1144	"in" {
1145	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1146	SendCmd "camera zoom $_view(-zoom)"
1147	}
1148	"out" {
1149	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1150	SendCmd "camera zoom $_view(-zoom)"
1151	}
1152	"reset" {
1153	array set _view {
1154	-qw 0.853553
1155	-qx -0.353553
1156	-qy 0.353553
1157	-qz 0.146447
1158	-xpan 0
1159	-ypan 0
1160	-zoom 1.0
1161	}
1162	if { $_first != "" } {
1163	set location [$_first hints camera]
1164	if { $location != "" } {
1165	array set _view $location
1166	}
1167	}
1168	$_arcball quaternion [ViewToQuaternion]
1169	DoRotate
1170	SendCmd "camera reset"
1171	}
1172	}
1173	}
1174
1175	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1176	set x $_view(-xpan)
1177	set y $_view(-ypan)
1178	SendCmd "camera pan $x $y"
1179	}
1180
1181
1182	# ----------------------------------------------------------------------
1183	# USAGE: Rotate click <x> <y>
1184	# USAGE: Rotate drag <x> <y>
1185	# USAGE: Rotate release <x> <y>
1186	#
1187	# Called automatically when the user clicks/drags/releases in the
1188	# plot area. Moves the plot according to the user's actions.
1189	# ----------------------------------------------------------------------
1190	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1191	switch -- $option {
1192	"click" {
1193	$itk_component(view) configure -cursor fleur
1194	set _click(x) $x
1195	set _click(y) $y
1196	}
1197	"drag" {
1198	if {[array size _click] == 0} {
1199	Rotate click $x $y
1200	} else {
1201	set w [winfo width $itk_component(view)]
1202	set h [winfo height $itk_component(view)]
1203	if {$w <= 0 \|\| $h <= 0} {
1204	return
1205	}
1206
1207	if {[catch {
1208	# this fails sometimes for no apparent reason
1209	set dx [expr {double($x-$_click(x))/$w}]
1210	set dy [expr {double($y-$_click(y))/$h}]
1211	}]} {
1212	return
1213	}
1214	if { $dx == 0 && $dy == 0 } {
1215	return
1216	}
1217	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1218	EventuallyRotate $q
1219	set _click(x) $x
1220	set _click(y) $y
1221	}
1222	}
1223	"release" {
1224	Rotate drag $x $y
1225	$itk_component(view) configure -cursor ""
1226	catch {unset _click}
1227	}
1228	default {
1229	error "bad option \"$option\": should be click, drag, release"
1230	}
1231	}
1232	}
1233
1234	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1235	foreach tag [CurrentDatasets -visible] {
1236	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1237	}
1238	}
1239
1240	# ----------------------------------------------------------------------
1241	# USAGE: $this Pan click x y
1242	# $this Pan drag x y
1243	# $this Pan release x y
1244	#
1245	# Called automatically when the user clicks on one of the zoom
1246	# controls for this widget. Changes the zoom for the current view.
1247	# ----------------------------------------------------------------------
1248	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1249	switch -- $option {
1250	"set" {
1251	set w [winfo width $itk_component(view)]
1252	set h [winfo height $itk_component(view)]
1253	set x [expr $x / double($w)]
1254	set y [expr $y / double($h)]
1255	set _view(-xpan) [expr $_view(-xpan) + $x]
1256	set _view(-ypan) [expr $_view(-ypan) + $y]
1257	PanCamera
1258	return
1259	}
1260	"click" {
1261	set _click(x) $x
1262	set _click(y) $y
1263	$itk_component(view) configure -cursor hand1
1264	}
1265	"drag" {
1266	if { ![info exists _click(x)] } {
1267	set _click(x) $x
1268	}
1269	if { ![info exists _click(y)] } {
1270	set _click(y) $y
1271	}
1272	set w [winfo width $itk_component(view)]
1273	set h [winfo height $itk_component(view)]
1274	set dx [expr ($_click(x) - $x)/double($w)]
1275	set dy [expr ($_click(y) - $y)/double($h)]
1276	set _click(x) $x
1277	set _click(y) $y
1278	set _view(-xpan) [expr $_view(-xpan) - $dx]
1279	set _view(-ypan) [expr $_view(-ypan) - $dy]
1280	PanCamera
1281	}
1282	"release" {
1283	Pan drag $x $y
1284	$itk_component(view) configure -cursor ""
1285	}
1286	default {
1287	error "unknown option \"$option\": should set, click, drag, or release"
1288	}
1289	}
1290	}
1291
1292	# ----------------------------------------------------------------------
1293	# USAGE: InitSettings <what> ?<value>?
1294	#
1295	# Used internally to update rendering settings whenever parameters
1296	# change in the popup settings panel. Sends the new settings off
1297	# to the back end.
1298	# ----------------------------------------------------------------------
1299	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1300	foreach spec $args {
1301	if { [info exists _settings($_first-$spec)] } {
1302	# Reset global setting with dataobj specific setting
1303	set _settings($spec) $_settings($_first-$spec)
1304	}
1305	AdjustSetting $spec
1306	}
1307	}
1308
1309	#
1310	# AdjustSetting --
1311	#
1312	# Changes/updates a specific setting in the widget. There are
1313	# usually user-setable option. Commands are sent to the render
1314	# server.
1315	#
1316	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1317	if { ![isconnected] } {
1318	return
1319	}
1320	switch -- $what {
1321	"-axesvisible" {
1322	set bool $_settings($what)
1323	SendCmd "axis visible all $bool"
1324	}
1325	"-axislabelsvisible" {
1326	set bool $_settings($what)
1327	SendCmd "axis labels all $bool"
1328	}
1329	"-axismode" {
1330	set mode [$itk_component(axisMode) value]
1331	set mode [$itk_component(axisMode) translate $mode]
1332	set _settings($what) $mode
1333	SendCmd "axis flymode $mode"
1334	}
1335	"-background" {
1336	set bgcolor [$itk_component(background) value]
1337	array set fgcolors {
1338	"black" "white"
1339	"white" "black"
1340	"grey" "black"
1341	}
1342	configure -plotbackground $bgcolor \
1343	-plotforeground $fgcolors($bgcolor)
1344	$itk_component(view) delete "legend"
1345	DrawLegend
1346	}
1347	"-cutplaneedges" {
1348	set bool $_settings($what)
1349	SendCmd "cutplane edges $bool"
1350	}
1351	"-cutplanelighting" {
1352	set bool $_settings($what)
1353	SendCmd "cutplane lighting $bool"
1354	}
1355	"-cutplaneopacity" {
1356	set _settings($what) [expr $_widget($what) * 0.01]
1357	SendCmd "cutplane opacity $_settings($what)"
1358	}
1359	"-cutplanepreinterp" {
1360	set bool $_settings($what)
1361	SendCmd "cutplane preinterp $bool"
1362	}
1363	"-cutplanesvisible" {
1364	set bool $_settings($what)
1365	SendCmd "cutplane visible 0"
1366	if { $bool } {
1367	foreach tag [CurrentDatasets -visible] {
1368	SendCmd "cutplane visible $bool $tag"
1369	}
1370	}
1371	if { $bool } {
1372	Rappture::Tooltip::for $itk_component(cutplane) \
1373	"Hide the cutplanes"
1374	} else {
1375	Rappture::Tooltip::for $itk_component(cutplane) \
1376	"Show the cutplanes"
1377	}
1378	}
1379	"-cutplanewireframe" {
1380	set bool $_settings($what)
1381	SendCmd "cutplane wireframe $bool"
1382	}
1383	"-colormap" {
1384	set _changed($what) 1
1385	StartBufferingCommands
1386	set color [$itk_component(colormap) value]
1387	set _settings($what) $color
1388	if { $color == "none" } {
1389	if { $_settings(-colormapvisible) } {
1390	SendCmd "contour3d colormode constant {}"
1391	set _settings(-colormapvisible) 0
1392	}
1393	} else {
1394	if { !$_settings(-colormapvisible) } {
1395	SendCmd "contour3d colormode $_colorMode $_curFldName"
1396	set _settings(-colormapvisible) 1
1397	}
1398	SetCurrentColormap $color
1399	}
1400	StopBufferingCommands
1401	EventuallyRequestLegend
1402	}
1403	"-field" {
1404	set label [$itk_component(field) value]
1405	set fname [$itk_component(field) translate $label]
1406	set _settings($what) $fname
1407	if { [info exists _fields($fname)] } {
1408	foreach { label units components } $_fields($fname) break
1409	if { $components > 1 } {
1410	set _colorMode vmag
1411	} else {
1412	set _colorMode scalar
1413	}
1414	set _curFldName $fname
1415	set _curFldLabel $label
1416	} else {
1417	puts stderr "unknown field \"$fname\""
1418	return
1419	}
1420	SendCmd "dataset scalar $_curFldName"
1421	if { ![info exists _limits($_curFldName)] } {
1422	SendCmd "dataset maprange all"
1423	} else {
1424	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1425	}
1426	SendCmd "cutplane colormode $_colorMode $_curFldName"
1427	SendCmd "contour3d colormode $_colorMode $_curFldName"
1428	SendCmd "camera reset"
1429	GenerateContourList
1430	DrawLegend
1431	}
1432	"-isolinecolor" {
1433	set color [$itk_component(isolineColor) value]
1434	set _settings($what) $color
1435	DrawLegend
1436	}
1437	"-isosurfaceedges" {
1438	set bool $_settings($what)
1439	SendCmd "contour3d edges $bool"
1440	}
1441	"-isosurfacelighting" {
1442	set bool $_settings($what)
1443	SendCmd "contour3d lighting $bool"
1444	}
1445	"-isosurfaceopacity" {
1446	set _settings($what) [expr $_widget($what) * 0.01]
1447	SendCmd "contour3d opacity $_settings($what)"
1448	}
1449	"-isosurfacevisible" {
1450	set bool $_settings($what)
1451	SendCmd "contour3d visible 0"
1452	if { $bool } {
1453	foreach tag [CurrentDatasets -visible] {
1454	SendCmd "contour3d visible $bool $tag"
1455	}
1456	}
1457	if { $bool } {
1458	Rappture::Tooltip::for $itk_component(contour) \
1459	"Hide the isosurface"
1460	} else {
1461	Rappture::Tooltip::for $itk_component(contour) \
1462	"Show the isosurface"
1463	}
1464	}
1465	"-isosurfacewireframe" {
1466	set bool $_settings($what)
1467	SendCmd "contour3d wireframe $bool"
1468	}
1469	"-legendvisible" {
1470	if { !$_settings($what) } {
1471	$itk_component(view) delete legend
1472	}
1473	DrawLegend
1474	}
1475	"-numcontours" {
1476	set _settings($what) [$itk_component(numcontours) value]
1477	if { $_contourList(numLevels) != $_settings($what) } {
1478	set _contourList(numLevels) $_settings($what)
1479	EventuallyChangeContourLevels
1480	}
1481	}
1482	"-ortho" {
1483	set bool $_view($what)
1484	if { $bool } {
1485	SendCmd "camera mode ortho"
1486	} else {
1487	SendCmd "camera mode persp"
1488	}
1489	}
1490	"-outline" {
1491	set bool $_settings($what)
1492	SendCmd "outline visible 0"
1493	if { $bool } {
1494	foreach tag [CurrentDatasets -visible] {
1495	SendCmd "outline visible $bool $tag"
1496	}
1497	}
1498	}
1499	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1500	set axis [string tolower [string range $what 1 1]]
1501	set bool $_settings($what)
1502	if { $bool } {
1503	$itk_component(${axis}position) configure -state normal \
1504	-troughcolor white
1505	} else {
1506	$itk_component(${axis}position) configure -state disabled \
1507	-troughcolor grey82
1508	}
1509	SendCmd "cutplane axis $axis $bool"
1510	}
1511	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1512	set axis [string tolower [string range $what 1 1]]
1513	set pos [expr $_settings($what) * 0.01]
1514	SendCmd "cutplane slice ${axis} ${pos}"
1515	set _cutplanePending 0
1516	}
1517	"-xgrid" - "-ygrid" - "-zgrid" {
1518	set axis [string tolower [string range $what 1 1]]
1519	set bool $_settings($what)
1520	SendCmd "axis grid $axis $bool"
1521	}
1522	default {
1523	error "don't know how to fix $what"
1524	}
1525	}
1526	}
1527
1528
1529	#
1530	# RequestLegend --
1531	#
1532	# Request a new legend from the server. The size of the legend
1533	# is determined from the height of the canvas.
1534	#
1535	# This should be called when
1536	# 1. A new current colormap is set.
1537	# 2. Window is resized.
1538	# 3. The limits of the data have changed. (Just need a redraw).
1539	# 4. Number of isolines have changed. (Just need a redraw).
1540	# 5. Legend becomes visible (Just need a redraw).
1541	#
1542	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1543	set _legendPending 0
1544	if { ![info exists _fields($_curFldName)] } {
1545	return
1546	}
1547	set fname $_curFldName
1548	set font "Arial 8"
1549	set lineht [font metrics $font -linespace]
1550	set w 12
1551	set h [expr {$_height - 2 * ($lineht + 2)}]
1552	if { $h < 1 } {
1553	return
1554	}
1555	if { [string match "component*" $fname] } {
1556	set title ""
1557	} else {
1558	if { [info exists _fields($fname)] } {
1559	foreach { title units } $_fields($fname) break
1560	if { $units != "" } {
1561	set title [format "%s (%s)" $title $units]
1562	}
1563	} else {
1564	set title $fname
1565	}
1566	}
1567	# If there's a title too, subtract one more line
1568	if { $title != "" } {
1569	incr h -$lineht
1570	}
1571	# Set the legend on the first heightmap dataset.
1572	if { $_currentColormap != "" } {
1573	set cmap $_currentColormap
1574	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1575	}
1576	}
1577
1578	# ----------------------------------------------------------------------
1579	# CONFIGURATION OPTION: -plotbackground
1580	# ----------------------------------------------------------------------
1581	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1582	if { [isconnected] } {
1583	set rgb [Color2RGB $itk_option(-plotbackground)]
1584	SendCmd "screen bgcolor $rgb"
1585	}
1586	}
1587
1588	# ----------------------------------------------------------------------
1589	# CONFIGURATION OPTION: -plotforeground
1590	# ----------------------------------------------------------------------
1591	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1592	if { [isconnected] } {
1593	set rgb [Color2RGB $itk_option(-plotforeground)]
1594	SendCmd "axis color all $rgb"
1595	SendCmd "outline color $rgb"
1596	SendCmd "cutplane color $rgb"
1597	}
1598	}
1599
1600	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1601	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1602	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1603	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1604	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1605	return [array get limits]
1606	}
1607
1608	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1609
1610	set fg [option get $itk_component(hull) font Font]
1611	#set bfg [option get $itk_component(hull) boldFont Font]
1612
1613	set inner [$itk_component(main) insert end \
1614	-title "Isosurface Settings" \
1615	-icon [Rappture::icon volume-on]]
1616	$inner configure -borderwidth 4
1617
1618	checkbutton $inner.contour \
1619	-text "Isosurfaces" \
1620	-variable [itcl::scope _settings(-isosurfacevisible)] \
1621	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
1622	-font "Arial 9"
1623
1624	checkbutton $inner.wireframe \
1625	-text "Wireframe" \
1626	-variable [itcl::scope _settings(-isosurfacewireframe)] \
1627	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
1628	-font "Arial 9"
1629
1630	checkbutton $inner.lighting \
1631	-text "Enable Lighting" \
1632	-variable [itcl::scope _settings(-isosurfacelighting)] \
1633	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
1634	-font "Arial 9"
1635
1636	checkbutton $inner.edges \
1637	-text "Edges" \
1638	-variable [itcl::scope _settings(-isosurfaceedges)] \
1639	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
1640	-font "Arial 9"
1641
1642	checkbutton $inner.outline \
1643	-text "Outline" \
1644	-variable [itcl::scope _settings(-outline)] \
1645	-command [itcl::code $this AdjustSetting -outline] \
1646	-font "Arial 9"
1647
1648	checkbutton $inner.legend \
1649	-text "Legend" \
1650	-variable [itcl::scope _settings(-legendvisible)] \
1651	-command [itcl::code $this AdjustSetting -legendvisible] \
1652	-font "Arial 9"
1653
1654	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1655	itk_component add isolineColor {
1656	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1657	}
1658	$inner.linecolor choices insert end \
1659	"black" "black" \
1660	"blue" "blue" \
1661	"cyan" "cyan" \
1662	"green" "green" \
1663	"grey" "grey" \
1664	"magenta" "magenta" \
1665	"orange" "orange" \
1666	"red" "red" \
1667	"white" "white" \
1668	"none" "none"
1669
1670	$itk_component(isolineColor) value "white"
1671	bind $inner.linecolor <<Value>> \
1672	[itcl::code $this AdjustSetting -isolinecolor]
1673
1674	label $inner.background_l -text "Background" -font "Arial 9"
1675	itk_component add background {
1676	Rappture::Combobox $inner.background -width 10 -editable 0
1677	}
1678	$inner.background choices insert end \
1679	"black" "black" \
1680	"white" "white" \
1681	"grey" "grey"
1682
1683	$itk_component(background) value $_settings(-background)
1684	bind $inner.background <<Value>> \
1685	[itcl::code $this AdjustSetting -background]
1686
1687	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1688	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1689	-variable [itcl::scope _widget(-isosurfaceopacity)] \
1690	-width 10 \
1691	-showvalue off \
1692	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
1693	set _widget(-isosurfaceopacity) \
1694	[expr $_settings(-isosurfaceopacity) * 100.0]
1695
1696	itk_component add field_l {
1697	label $inner.field_l -text "Field" -font "Arial 9"
1698	} {
1699	ignore -font
1700	}
1701	itk_component add field {
1702	Rappture::Combobox $inner.field -width 10 -editable 0
1703	}
1704	bind $inner.field <<Value>> \
1705	[itcl::code $this AdjustSetting -field]
1706
1707	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1708	itk_component add colormap {
1709	Rappture::Combobox $inner.colormap -width 10 -editable 0
1710	}
1711	$inner.colormap choices insert end [GetColormapList]
1712
1713	$itk_component(colormap) value "BCGYR"
1714	bind $inner.colormap <<Value>> \
1715	[itcl::code $this AdjustSetting -colormap]
1716
1717	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1718	itk_component add numcontours {
1719	Rappture::Spinint $inner.numcontours \
1720	-min 0 -max 50 -font "arial 9"
1721	}
1722	$itk_component(numcontours) value $_settings(-numcontours)
1723	bind $itk_component(numcontours) <<Value>> \
1724	[itcl::code $this AdjustSetting -numcontours]
1725
1726	blt::table $inner \
1727	0,0 $inner.field_l -anchor w -pady 2 \
1728	0,1 $inner.field -anchor w -pady 2 -fill x \
1729	1,0 $inner.colormap_l -anchor w -pady 2 \
1730	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1731	2,0 $inner.linecolor_l -anchor w -pady 2 \
1732	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1733	3,0 $inner.background_l -anchor w -pady 2 \
1734	3,1 $inner.background -anchor w -pady 2 -fill x \
1735	4,0 $inner.numcontours_l -anchor w -pady 2 \
1736	4,1 $inner.numcontours -anchor w -pady 2 \
1737	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1738	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1739	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1740	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1741	9,0 $inner.legend -anchor w -pady 2 \
1742	10,0 $inner.opacity_l -anchor w -pady 2 \
1743	10,1 $inner.opacity -fill x -pady 2 -fill x \
1744
1745	blt::table configure $inner r* c* -resize none
1746	blt::table configure $inner r11 c1 -resize expand
1747	}
1748
1749	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1750
1751	set fg [option get $itk_component(hull) font Font]
1752	#set bfg [option get $itk_component(hull) boldFont Font]
1753
1754	set inner [$itk_component(main) insert end \
1755	-title "Axis Settings" \
1756	-icon [Rappture::icon axis2]]
1757	$inner configure -borderwidth 4
1758
1759	checkbutton $inner.visible \
1760	-text "Show Axes" \
1761	-variable [itcl::scope _settings(-axesvisible)] \
1762	-command [itcl::code $this AdjustSetting -axesvisible] \
1763	-font "Arial 9"
1764
1765	checkbutton $inner.labels \
1766	-text "Show Axis Labels" \
1767	-variable [itcl::scope _settings(-axislabelsvisible)] \
1768	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1769	-font "Arial 9"
1770
1771	checkbutton $inner.gridx \
1772	-text "Show X Grid" \
1773	-variable [itcl::scope _settings(-xgrid)] \
1774	-command [itcl::code $this AdjustSetting -xgrid] \
1775	-font "Arial 9"
1776	checkbutton $inner.gridy \
1777	-text "Show Y Grid" \
1778	-variable [itcl::scope _settings(-ygrid)] \
1779	-command [itcl::code $this AdjustSetting -ygrid] \
1780	-font "Arial 9"
1781	checkbutton $inner.gridz \
1782	-text "Show Z Grid" \
1783	-variable [itcl::scope _settings(-zgrid)] \
1784	-command [itcl::code $this AdjustSetting -zgrid] \
1785	-font "Arial 9"
1786
1787	label $inner.mode_l -text "Mode" -font "Arial 9"
1788
1789	itk_component add axisMode {
1790	Rappture::Combobox $inner.mode -width 10 -editable 0
1791	}
1792	$inner.mode choices insert end \
1793	"static_triad" "static" \
1794	"closest_triad" "closest" \
1795	"furthest_triad" "farthest" \
1796	"outer_edges" "outer"
1797	$itk_component(axisMode) value $_settings(-axismode)
1798	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1799
1800	blt::table $inner \
1801	0,0 $inner.visible -anchor w -cspan 2 \
1802	1,0 $inner.labels -anchor w -cspan 2 \
1803	2,0 $inner.gridx -anchor w -cspan 2 \
1804	3,0 $inner.gridy -anchor w -cspan 2 \
1805	4,0 $inner.gridz -anchor w -cspan 2 \
1806	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1807	6,0 $inner.mode -fill x -cspan 2
1808
1809	blt::table configure $inner r* c* -resize none
1810	blt::table configure $inner r7 c1 -resize expand
1811	}
1812
1813
1814	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1815	set inner [$itk_component(main) insert end \
1816	-title "Camera Settings" \
1817	-icon [Rappture::icon camera]]
1818	$inner configure -borderwidth 4
1819
1820	label $inner.view_l -text "view" -font "Arial 9"
1821	set f [frame $inner.view]
1822	foreach side { front back left right top bottom } {
1823	button $f.$side -image [Rappture::icon view$side] \
1824	-command [itcl::code $this SetOrientation $side]
1825	Rappture::Tooltip::for $f.$side "Change the view to $side"
1826	pack $f.$side -side left
1827	}
1828
1829	blt::table $inner \
1830	0,0 $inner.view_l -anchor e -pady 2 \
1831	0,1 $inner.view -anchor w -pady 2
1832
1833	set labels { qx qy qz qw xpan ypan zoom }
1834	set row 1
1835	foreach tag $labels {
1836	label $inner.${tag}label -text $tag -font "Arial 9"
1837	entry $inner.${tag} -font "Arial 9" -bg white \
1838	-textvariable [itcl::scope _view(-$tag)]
1839	bind $inner.${tag} <KeyPress-Return> \
1840	[itcl::code $this camera set ${tag}]
1841	blt::table $inner \
1842	$row,0 $inner.${tag}label -anchor e -pady 2 \
1843	$row,1 $inner.${tag} -anchor w -pady 2
1844	blt::table configure $inner r$row -resize none
1845	incr row
1846	}
1847	checkbutton $inner.ortho \
1848	-text "Orthographic Projection" \
1849	-variable [itcl::scope _view(-ortho)] \
1850	-command [itcl::code $this AdjustSetting -ortho] \
1851	-font "Arial 9"
1852	blt::table $inner \
1853	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1854	blt::table configure $inner r$row -resize none
1855	incr row
1856
1857	blt::table configure $inner c* r* -resize none
1858	blt::table configure $inner c2 -resize expand
1859	blt::table configure $inner r$row -resize expand
1860	}
1861
1862	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1863
1864	set fg [option get $itk_component(hull) font Font]
1865
1866	set inner [$itk_component(main) insert end \
1867	-title "Cutplane Settings" \
1868	-icon [Rappture::icon cutbutton]]
1869
1870	$inner configure -borderwidth 4
1871
1872	checkbutton $inner.visible \
1873	-text "Cutplanes" \
1874	-variable [itcl::scope _settings(-cutplanesvisible)] \
1875	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1876	-font "Arial 9"
1877
1878	checkbutton $inner.wireframe \
1879	-text "Wireframe" \
1880	-variable [itcl::scope _settings(-cutplanewireframe)] \
1881	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1882	-font "Arial 9"
1883
1884	checkbutton $inner.lighting \
1885	-text "Enable Lighting" \
1886	-variable [itcl::scope _settings(-cutplanelighting)] \
1887	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1888	-font "Arial 9"
1889
1890	checkbutton $inner.edges \
1891	-text "Edges" \
1892	-variable [itcl::scope _settings(-cutplaneedges)] \
1893	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1894	-font "Arial 9"
1895
1896	checkbutton $inner.preinterp \
1897	-text "Interpolate Scalars" \
1898	-variable [itcl::scope _settings(-cutplanepreinterp)] \
1899	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
1900	-font "Arial 9"
1901
1902	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1903	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1904	-variable [itcl::scope _widget(-cutplaneopacity)] \
1905	-width 10 \
1906	-showvalue off \
1907	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1908	set _widget(-cutplaneopacity) [expr $_settings(-cutplaneopacity) * 100.0]
1909
1910	# X-value slicer...
1911	itk_component add xbutton {
1912	Rappture::PushButton $inner.xbutton \
1913	-onimage [Rappture::icon x-cutplane-red] \
1914	-offimage [Rappture::icon x-cutplane-red] \
1915	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1916	-variable [itcl::scope _settings(-xcutplanevisible)] \
1917	}
1918	Rappture::Tooltip::for $itk_component(xbutton) \
1919	"Toggle the X-axis cutplane on/off"
1920	$itk_component(xbutton) select
1921	itk_component add xposition {
1922	::scale $inner.xval -from 100 -to 0 \
1923	-width 10 -orient vertical -showvalue 1 \
1924	-borderwidth 1 -highlightthickness 0 \
1925	-command [itcl::code $this EventuallySetCutplane x] \
1926	-variable [itcl::scope _settings(-xcutplaneposition)] \
1927	-foreground red2 -font "Arial 9 bold"
1928	} {
1929	usual
1930	ignore -borderwidth -highlightthickness -foreground -font -background
1931	}
1932	# Set the default cutplane value before disabling the scale.
1933	$itk_component(xposition) set 50
1934	$itk_component(xposition) configure -state disabled
1935	Rappture::Tooltip::for $itk_component(xposition) \
1936	"@[itcl::code $this Slice tooltip x]"
1937
1938	# Y-value slicer...
1939	itk_component add ybutton {
1940	Rappture::PushButton $inner.ybutton \
1941	-onimage [Rappture::icon y-cutplane-green] \
1942	-offimage [Rappture::icon y-cutplane-green] \
1943	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1944	-variable [itcl::scope _settings(-ycutplanevisible)] \
1945	}
1946	Rappture::Tooltip::for $itk_component(ybutton) \
1947	"Toggle the Y-axis cutplane on/off"
1948	$itk_component(ybutton) select
1949
1950	itk_component add yposition {
1951	::scale $inner.yval -from 100 -to 0 \
1952	-width 10 -orient vertical -showvalue 1 \
1953	-borderwidth 1 -highlightthickness 0 \
1954	-command [itcl::code $this EventuallySetCutplane y] \
1955	-variable [itcl::scope _settings(-ycutplaneposition)] \
1956	-foreground green3 -font "Arial 9 bold"
1957	} {
1958	usual
1959	ignore -borderwidth -highlightthickness -foreground -font
1960	}
1961	Rappture::Tooltip::for $itk_component(yposition) \
1962	"@[itcl::code $this Slice tooltip y]"
1963	# Set the default cutplane value before disabling the scale.
1964	$itk_component(yposition) set 50
1965	$itk_component(yposition) configure -state disabled
1966
1967	# Z-value slicer...
1968	itk_component add zbutton {
1969	Rappture::PushButton $inner.zbutton \
1970	-onimage [Rappture::icon z-cutplane-blue] \
1971	-offimage [Rappture::icon z-cutplane-blue] \
1972	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1973	-variable [itcl::scope _settings(-zcutplanevisible)] \
1974	} {
1975	usual
1976	ignore -foreground
1977	}
1978	Rappture::Tooltip::for $itk_component(zbutton) \
1979	"Toggle the Z-axis cutplane on/off"
1980	$itk_component(zbutton) select
1981
1982	itk_component add zposition {
1983	::scale $inner.zval -from 100 -to 0 \
1984	-width 10 -orient vertical -showvalue 1 \
1985	-borderwidth 1 -highlightthickness 0 \
1986	-command [itcl::code $this EventuallySetCutplane z] \
1987	-variable [itcl::scope _settings(-zcutplaneposition)] \
1988	-foreground blue3 -font "Arial 9 bold"
1989	} {
1990	usual
1991	ignore -borderwidth -highlightthickness -foreground -font
1992	}
1993	$itk_component(zposition) set 50
1994	$itk_component(zposition) configure -state disabled
1995	Rappture::Tooltip::for $itk_component(zposition) \
1996	"@[itcl::code $this Slice tooltip z]"
1997
1998	blt::table $inner \
1999	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
2000	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
2001	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
2002	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
2003	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
2004	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2005	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2006	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
2007	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
2008	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
2009	6,1 $inner.xval -fill y -rspan 4 \
2010	6,2 $inner.yval -fill y -rspan 4 \
2011	6,3 $inner.zval -fill y -rspan 4 \
2012
2013
2014	blt::table configure $inner r* c* -resize none
2015	blt::table configure $inner r9 c4 -resize expand
2016	}
2017
2018
2019
2020	#
2021	# camera --
2022	#
2023	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2024	switch -- $option {
2025	"show" {
2026	puts [array get _view]
2027	}
2028	"set" {
2029	set what [lindex $args 0]
2030	set x $_view($what)
2031	set code [catch { string is double $x } result]
2032	if { $code != 0 \|\| !$result } {
2033	return
2034	}
2035	switch -- $what {
2036	"-ortho" {
2037	if {$_view($what)} {
2038	SendCmd "camera mode ortho"
2039	} else {
2040	SendCmd "camera mode persp"
2041	}
2042	}
2043	"-xpan" - "-ypan" {
2044	PanCamera
2045	}
2046	"-qx" - "-qy" - "-qz" - "-qw" {
2047	set q [ViewToQuaternion]
2048	$_arcball quaternion $q
2049	EventuallyRotate $q
2050	}
2051	"-zoom" {
2052	SendCmd "camera zoom $_view(-zoom)"
2053	}
2054	}
2055	}
2056	}
2057	}
2058
2059	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2060	set bytes ""
2061	foreach dataobj [get] {
2062	foreach cname [$dataobj components] {
2063	set tag $dataobj-$cname
2064	set contents [$dataobj vtkdata $cname]
2065	append bytes "$contents\n"
2066	}
2067	}
2068	return [list .vtk $bytes]
2069	}
2070
2071	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2072	if { [image width $_image(download)] > 0 &&
2073	[image height $_image(download)] > 0 } {
2074	set bytes [$_image(download) data -format "jpeg -quality 100"]
2075	set bytes [Rappture::encoding::decode -as b64 $bytes]
2076	return [list .jpg $bytes]
2077	}
2078	return ""
2079	}
2080
2081	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2082	Rappture::Balloon $popup \
2083	-title "[Rappture::filexfer::label downloadWord] as..."
2084	set inner [$popup component inner]
2085	label $inner.summary -text "" -anchor w
2086	radiobutton $inner.vtk_button -text "VTK data file" \
2087	-variable [itcl::scope _downloadPopup(format)] \
2088	-font "Arial 9 " \
2089	-value vtk
2090	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2091	radiobutton $inner.image_button -text "Image File" \
2092	-variable [itcl::scope _downloadPopup(format)] \
2093	-font "Arial 9 " \
2094	-value image
2095	Rappture::Tooltip::for $inner.image_button \
2096	"Save as digital image."
2097
2098	button $inner.ok -text "Save" \
2099	-highlightthickness 0 -pady 2 -padx 3 \
2100	-command $command \
2101	-compound left \
2102	-image [Rappture::icon download]
2103
2104	button $inner.cancel -text "Cancel" \
2105	-highlightthickness 0 -pady 2 -padx 3 \
2106	-command [list $popup deactivate] \
2107	-compound left \
2108	-image [Rappture::icon cancel]
2109
2110	blt::table $inner \
2111	0,0 $inner.summary -cspan 2 \
2112	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2113	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2114	4,1 $inner.cancel -width .9i -fill y \
2115	4,0 $inner.ok -padx 2 -width .9i -fill y
2116	blt::table configure $inner r3 -height 4
2117	blt::table configure $inner r4 -pady 4
2118	raise $inner.image_button
2119	$inner.vtk_button invoke
2120	return $inner
2121	}
2122
2123	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2124	# Parse style string.
2125	set tag $dataobj-$comp
2126	array set style {
2127	-color BCGYR
2128	-cutplanesvisible 0
2129	-edgecolor black
2130	-edges 0
2131	-isosurfaceopacity 0.6
2132	-isosurfacevisible 1
2133	-levels 10
2134	-lighting 1
2135	-linewidth 1.0
2136	-outline 0
2137	-wireframe 0
2138	-xcutplaneposition 50
2139	-xcutplanevisible 1
2140	-ycutplaneposition 50
2141	-ycutplanevisible 1
2142	-zcutplaneposition 50
2143	-zcutplanevisible 1
2144	}
2145	array set style [$dataobj style $comp]
2146	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2147	set style(-isosurfaceopacity) 1.0
2148	}
2149
2150	# This is too complicated. We want to set the colormap, number of
2151	# isolines and opacity for the dataset. They can be the default values,
2152	# the style hints loaded with the dataset, or set by user controls. As
2153	# datasets get loaded, they first use the defaults that are overidden
2154	# by the style hints. If the user changes the global controls, then that
2155	# overrides everything else. I don't know what it means when global
2156	# controls are specified as style hints by each dataset. It complicates
2157	# the code to handle aberrant cases.
2158
2159	if { $_changed(-isosurfaceopacity) } {
2160	set style(-isosurfaceopacity) $_settings(-isosurfaceopacity)
2161	}
2162	if { $_changed(-numcontours) } {
2163	set style(-levels) $_settings(-numcontours)
2164	}
2165	if { $_changed(-colormap) } {
2166	set style(-color) $_settings(-colormap)
2167	}
2168	if { $_currentColormap == "" } {
2169	SetCurrentColormap $style(-color)
2170	$itk_component(colormap) value $style(-color)
2171	}
2172	if { $_contourList(numLevels) != $style(-levels) } {
2173	if { [llength $style(-levels)] > 1 } {
2174	set _contourList(reqValues) [lsort -real $style(-levels)]
2175	} else {
2176	set _settings(-numcontours) $style(-levels)
2177	$itk_component(numcontours) value $style(-levels)
2178	set _contourList(numLevels) $style(-levels)
2179	}
2180	EventuallyChangeContourLevels
2181	}
2182	set _settings(-isosurfacevisible) $style(-isosurfacevisible)
2183	set _settings(-cutplanesvisible) $style(-cutplanesvisible)
2184	set _settings(-xcutplanevisible) $style(-xcutplanevisible)
2185	set _settings(-ycutplanevisible) $style(-ycutplanevisible)
2186	set _settings(-zcutplanevisible) $style(-zcutplanevisible)
2187	set _settings(-xcutplaneposition) $style(-xcutplaneposition)
2188	set _settings(-ycutplaneposition) $style(-ycutplaneposition)
2189	set _settings(-zcutplaneposition) $style(-zcutplaneposition)
2190
2191	SendCmd "cutplane add $tag"
2192	SendCmd "cutplane visible $style(-cutplanesvisible) $tag"
2193
2194	SendCmd "outline add $tag"
2195	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2196	SendCmd "outline visible $style(-outline) $tag"
2197	set _settings(-outline) $style(-outline)
2198
2199	GenerateContourList
2200	SendCmd [list contour3d add contourlist $_contourList(values) $tag]
2201	SendCmd "contour3d visible $style(-isosurfacevisible) $tag"
2202	SendCmd "contour3d edges $style(-edges) $tag"
2203	set _settings(-isosurfaceedges) $style(-edges)
2204	#SendCmd "contour3d color [Color2RGB $settings(-color)] $tag"
2205	SendCmd "contour3d lighting $style(-lighting) $tag"
2206	set _settings(-isosurfacelighting) $style(-lighting)
2207	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2208	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2209	SendCmd "contour3d opacity $style(-isosurfaceopacity) $tag"
2210	set _settings(-isosurfaceopacity) $style(-isosurfaceopacity)
2211	SetCurrentColormap $style(-color)
2212	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2213	set _settings(-isosurfacewireframe) $style(-wireframe)
2214	}
2215
2216	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2217	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2218	return 0
2219	}
2220	return 1
2221	}
2222
2223	#
2224	# EnterLegend --
2225	#
2226	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2227	SetLegendTip $x $y
2228	}
2229
2230	#
2231	# MotionLegend --
2232	#
2233	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2234	Rappture::Tooltip::tooltip cancel
2235	set c $itk_component(view)
2236	set cw [winfo width $c]
2237	set ch [winfo height $c]
2238	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2239	SetLegendTip $x $y
2240	}
2241	}
2242
2243	#
2244	# LeaveLegend --
2245	#
2246	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2247	Rappture::Tooltip::tooltip cancel
2248	.rappturetooltip configure -icon ""
2249	}
2250
2251	#
2252	# SetLegendTip --
2253	#
2254	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2255	set fname $_curFldName
2256	set c $itk_component(view)
2257	set w [winfo width $c]
2258	set h [winfo height $c]
2259
2260	set font "Arial 8"
2261	set lineht [font metrics $font -linespace]
2262
2263	set ih [image height $_image(legend)]
2264	set iy [expr $y - ($lineht + 2)]
2265
2266	if { [string match "component*" $fname] } {
2267	set title ""
2268	} else {
2269	if { [info exists _fields($fname)] } {
2270	foreach { title units } $_fields($fname) break
2271	if { $units != "" } {
2272	set title [format "%s (%s)" $title $units]
2273	}
2274	} else {
2275	set title $fname
2276	}
2277	}
2278	# If there's a legend title, increase the offset by the line height.
2279	if { $title != "" } {
2280	incr iy -$lineht
2281	}
2282	# Make a swatch of the selected color
2283	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2284	return
2285	}
2286	if { ![info exists _image(swatch)] } {
2287	set _image(swatch) [image create photo -width 24 -height 24]
2288	}
2289	set color [eval format "\#%02x%02x%02x" $pixel]
2290	$_image(swatch) put black -to 0 0 23 23
2291	$_image(swatch) put $color -to 1 1 22 22
2292	.rappturetooltip configure -icon $_image(swatch)
2293
2294	# Compute the value of the point
2295	if { [info exists _limits($_curFldName)] } {
2296	foreach { vmin vmax } $_limits($_curFldName) break
2297	set t [expr 1.0 - (double($iy) / double($ih-1))]
2298	set value [expr $t * ($vmax - $vmin) + $vmin]
2299	} else {
2300	set value 0.0
2301	}
2302	set tx [expr $x + 15]
2303	set ty [expr $y - 5]
2304	if { [info exists _isolines($y)] } {
2305	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2306	} else {
2307	Rappture::Tooltip::text $c [format "$title %g" $value]
2308	}
2309	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2310	}
2311
2312
2313	# ----------------------------------------------------------------------
2314	# USAGE: Slice move x\|y\|z <newval>
2315	#
2316	# Called automatically when the user drags the slider to move the
2317	# cut plane that slices 3D data. Gets the current value from the
2318	# slider and moves the cut plane to the appropriate point in the
2319	# data set.
2320	# ----------------------------------------------------------------------
2321	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2322	switch -- $option {
2323	"move" {
2324	set axis [lindex $args 0]
2325	set newval [lindex $args 1]
2326	if {[llength $args] != 2} {
2327	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2328	}
2329	set newpos [expr {0.01*$newval}]
2330	SendCmd "cutplane slice $axis $newpos"
2331	}
2332	"tooltip" {
2333	set axis [lindex $args 0]
2334	set val [$itk_component(${axis}position) get]
2335	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2336	}
2337	default {
2338	error "bad option \"$option\": should be axis, move, or tooltip"
2339	}
2340	}
2341	}
2342
2343	#
2344	# ReceiveLegend --
2345	#
2346	# Invoked automatically whenever the "legend" command comes in from
2347	# the rendering server. Indicates that binary image data with the
2348	# specified <size> will follow.
2349	#
2350	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2351	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2352	set _title $title
2353	regsub {\(mag\)} $title "" _title
2354	if { [IsConnected] } {
2355	set bytes [ReceiveBytes $size]
2356	if { ![info exists _image(legend)] } {
2357	set _image(legend) [image create photo]
2358	}
2359	$_image(legend) configure -data $bytes
2360	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2361	if { [catch {DrawLegend} errs] != 0 } {
2362	global errorInfo
2363	puts stderr "errs=$errs errorInfo=$errorInfo"
2364	}
2365	}
2366	}
2367
2368	#
2369	# DrawLegend --
2370	#
2371	# Draws the legend in the own canvas on the right side of the plot area.
2372	#
2373	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2374	set fname $_curFldName
2375	set c $itk_component(view)
2376	set w [winfo width $c]
2377	set h [winfo height $c]
2378	set font "Arial 8"
2379	set lineht [font metrics $font -linespace]
2380
2381	if { [string match "component*" $fname] } {
2382	set title ""
2383	} else {
2384	if { [info exists _fields($fname)] } {
2385	foreach { title units } $_fields($fname) break
2386	if { $units != "" } {
2387	set title [format "%s (%s)" $title $units]
2388	}
2389	} else {
2390	set title $fname
2391	}
2392	}
2393	set x [expr $w - 2]
2394	if { !$_settings(-legendvisible) } {
2395	$c delete legend
2396	return
2397	}
2398	if { [$c find withtag "legend"] == "" } {
2399	set y 2
2400	# If there's a legend title, create a text item for the title.
2401	$c create text $x $y \
2402	-anchor ne \
2403	-fill $itk_option(-plotforeground) -tags "title legend" \
2404	-font $font
2405	if { $title != "" } {
2406	incr y $lineht
2407	}
2408	$c create text $x $y \
2409	-anchor ne \
2410	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2411	-font $font
2412	incr y $lineht
2413	$c create image $x $y \
2414	-anchor ne \
2415	-image $_image(legend) -tags "colormap legend"
2416	$c create rectangle $x $y 1 1 \
2417	-fill "" -outline "" -tags "sensor legend"
2418	$c create text $x [expr {$h-2}] \
2419	-anchor se \
2420	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2421	-font $font
2422	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2423	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2424	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2425	}
2426	$c delete isoline
2427	set x2 $x
2428	set iw [image width $_image(legend)]
2429	set ih [image height $_image(legend)]
2430	set x1 [expr $x2 - ($iw*12)/10]
2431	set color $_settings(-isolinecolor)
2432	# Draw the isolines on the legend.
2433	array unset _isolines
2434	if { $color != "none" && [info exists _limits($_curFldName)] &&
2435	$_settings(-numcontours) > 0 } {
2436
2437	foreach { vmin vmax } $_limits($_curFldName) break
2438	set range [expr double($vmax - $vmin)]
2439	if { $range <= 0.0 } {
2440	set range 1.0; # Min is greater or equal to max.
2441	}
2442	set tags "isoline legend"
2443	set offset [expr 2 + $lineht]
2444	if { $title != "" } {
2445	incr offset $lineht
2446	}
2447	foreach value $_contourList(values) {
2448	set norm [expr 1.0 - (($value - $vmin) / $range)]
2449	set y1 [expr int(round(($norm * $ih) + $offset))]
2450	for { set off 0 } { $off < 3 } { incr off } {
2451	set _isolines([expr $y1 + $off]) $value
2452	set _isolines([expr $y1 - $off]) $value
2453	}
2454	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2455	}
2456	}
2457
2458	$c bind title <ButtonPress> [itcl::code $this Combo post]
2459	$c bind title <Enter> [itcl::code $this Combo activate]
2460	$c bind title <Leave> [itcl::code $this Combo deactivate]
2461	# Reset the item coordinates according the current size of the plot.
2462	$c itemconfigure title -text $title
2463	if { [info exists _limits($_curFldName)] } {
2464	foreach { vmin vmax } $_limits($_curFldName) break
2465	$c itemconfigure vmin -text [format %g $vmin]
2466	$c itemconfigure vmax -text [format %g $vmax]
2467	}
2468	set y 2
2469	# If there's a legend title, move the title to the correct position
2470	if { $title != "" } {
2471	$c itemconfigure title -text $title
2472	$c coords title $x $y
2473	incr y $lineht
2474	$c raise title
2475	}
2476	$c coords vmax $x $y
2477	incr y $lineht
2478	$c coords colormap $x $y
2479	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2480	$c raise sensor
2481	$c coords vmin $x [expr {$h - 2}]
2482	}
2483
2484	# ----------------------------------------------------------------------
2485	# USAGE: _dropdown post
2486	# USAGE: _dropdown unpost
2487	# USAGE: _dropdown select
2488	#
2489	# Used internally to handle the dropdown list for this combobox. The
2490	# post/unpost options are invoked when the list is posted or unposted
2491	# to manage the relief of the controlling button. The select option
2492	# is invoked whenever there is a selection from the list, to assign
2493	# the value back to the gauge.
2494	# ----------------------------------------------------------------------
2495	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
2496	set c $itk_component(view)
2497	switch -- $option {
2498	post {
2499	foreach { x1 y1 x2 y2 } [$c bbox title] break
2500	set cw [winfo width $itk_component(view)]
2501	set mw [winfo reqwidth $itk_component(fieldmenu)]
2502	set x1 [expr $cw - $mw]
2503	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2504	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2505	tk_popup $itk_component(fieldmenu) $x $y
2506	}
2507	activate {
2508	$c itemconfigure title -fill red
2509	}
2510	deactivate {
2511	$c itemconfigure title -fill $itk_option(-plotforeground)
2512	}
2513	invoke {
2514	$itk_component(field) value $_curFldLabel
2515	AdjustSetting -field
2516	}
2517	default {
2518	error "bad option \"$option\": should be post, unpost, select"
2519	}
2520	}
2521	}
2522
2523	#
2524	# SetCurrentColormap --
2525	#
2526	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
2527	# Keep track of the colormaps that we build.
2528	if { ![info exists _colormaps($name)] } {
2529	BuildColormap $name
2530	set _colormaps($name) 1
2531	}
2532	set _currentColormap $name
2533	SendCmd "contour3d colormap $_currentColormap"
2534	SendCmd "cutplane colormap $_currentColormap"
2535	}
2536
2537	#
2538	# BuildColormap --
2539	#
2540	# Build the designated colormap on the server.
2541	#
2542	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
2543	set cmap [ColorsToColormap $name]
2544	if { [llength $cmap] == 0 } {
2545	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2546	}
2547	set wmap "0.0 1.0 1.0 1.0"
2548	SendCmd "colormap add $name { $cmap } { $wmap }"
2549	}
2550
2551	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
2552	array set positions {
2553	front "1 0 0 0"
2554	back "0 0 1 0"
2555	left "0.707107 0 -0.707107 0"
2556	right "0.707107 0 0.707107 0"
2557	top "0.707107 -0.707107 0 0"
2558	bottom "0.707107 0.707107 0 0"
2559	}
2560	foreach name { -qw -qx -qy -qz } value $positions($side) {
2561	set _view($name) $value
2562	}
2563	set q [ViewToQuaternion]
2564	$_arcball quaternion $q
2565	SendCmd "camera orient $q"
2566	SendCmd "camera reset"
2567	set _view(-xpan) 0
2568	set _view(-ypan) 0
2569	set _view(-zoom) 1.0
2570	}
2571
2572	itcl::body Rappture::VtkIsosurfaceViewer::GenerateContourList {} {
2573	if { ![info exists _limits($_curFldName)] } {
2574	puts stderr "no _curFldName"
2575	return ""
2576	}
2577	if { $_contourList(numLevels) < 1 } {
2578	return ""
2579	}
2580	if { [llength $_contourList(reqValues)] > 1 } {
2581	set values $_contourList(reqValues)
2582	} else {
2583	foreach { vmin vmax } $_limits($_curFldName) break
2584	set v [blt::vector create \#auto]
2585	$v seq $vmin $vmax [expr $_contourList(numLevels)+2]
2586	$v delete end 0
2587	set values [$v range 0 end]
2588	blt::vector destroy $v
2589	}
2590	set _contourList(values) $values
2591	}
2592
2593	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentFieldName { dataobj } {
2594	set _first $dataobj
2595	$itk_component(field) choices delete 0 end
2596	$itk_component(fieldmenu) delete 0 end
2597	array unset _fields
2598	set _curFldName ""
2599	foreach cname [$_first components] {
2600	foreach fname [$_first fieldnames $cname] {
2601	if { [info exists _fields($fname)] } {
2602	continue
2603	}
2604	foreach { label units components } \
2605	[$_first fieldinfo $fname] break
2606	$itk_component(field) choices insert end "$fname" "$label"
2607	$itk_component(fieldmenu) add radiobutton -label "$label" \
2608	-value $label -variable [itcl::scope _curFldLabel] \
2609	-selectcolor red \
2610	-activebackground $itk_option(-plotbackground) \
2611	-activeforeground $itk_option(-plotforeground) \
2612	-font "Arial 8" \
2613	-command [itcl::code $this Combo invoke]
2614	set _fields($fname) [list $label $units $components]
2615	if { $_curFldName == "" } {
2616	set _curFldName $fname
2617	set _curFldLabel $label
2618	}
2619	}
2620	}
2621	$itk_component(field) value $_curFldLabel
2622	if { ![info exists _limits($_curFldName)] } {
2623	SendCmd "dataset maprange all"
2624	} else {
2625	set limits $_limits($_curFldName)
2626	SendCmd "dataset maprange explicit $limits $_curFldName"
2627	if { $limits != $_currentLimits } {
2628	set _currentLimits $limits
2629	EventuallyChangeContourLevels
2630	}
2631	}
2632	}

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