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source: trunk/gui/scripts/vtkisosurfaceviewer.tcl @ 5767

Last change on this file since 5767 was 5767, checked in by ldelgass, 9 years ago
remove unused variable
File size: 110.7 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) 2004-2014 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 *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 parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63
64	# The following methods are only used by this class.
65	private method AdjustSetting {what {value ""}}
66	private method BuildAxisTab {}
67	private method BuildCameraTab {}
68	private method BuildColormap { name }
69	private method BuildCutplaneTab {}
70	private method BuildDownloadPopup { widget command }
71	private method BuildIsosurfaceTab {}
72	private method Connect {}
73	private method CurrentDatasets {args}
74	private method DisableMouseRotationBindings {}
75	private method Disconnect {}
76	private method DoChangeContourLevels {}
77	private method DoResize {}
78	private method DoRotate {}
79	private method DrawLegend {}
80	private method EnterLegend { x y }
81	private method EventuallyChangeContourLevels {}
82	private method EventuallyRequestLegend {}
83	private method EventuallyResize { w h }
84	private method EventuallyRotate { q }
85	private method EventuallySetCutplane { axis args }
86	private method GenerateContourList {}
87	private method GetImage { args }
88	private method GetVtkData { args }
89	private method InitSettings { args }
90	private method IsValidObject { dataobj }
91	private method LeaveLegend {}
92	private method LegendB1Motion {status x y}
93	private method LegendPointToValue { x y }
94	private method LegendProbeSingleContour { x y }
95	private method LegendRangeAction { option args }
96	private method LegendRangeValidate { widget which value }
97	private method LegendTitleAction { option }
98	private method MotionLegend { x y }
99	private method MouseOver2Which {}
100	private method Pan {option x y}
101	private method PanCamera {}
102	private method Pick {x y}
103	private method QuaternionToView { q } {
104	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
105	}
106	private method Rebuild {}
107	private method ReceiveDataset { args }
108	private method ReceiveImage { args }
109	private method ReceiveLegend { colormap title vmin vmax size }
110	private method RequestLegend {}
111	private method Rotate {option x y}
112	private method SetCurrentColormap { color }
113	private method SetCurrentFieldName { dataobj }
114	private method SetLegendTip { x y }
115	private method SetMinMaxGauges { min max }
116	private method SetObjectStyle { dataobj comp }
117	private method SetOrientation { side }
118	private method SetupMouseRotationBindings {}
119	private method SetupMousePanningBindings {}
120	private method SetupKeyboardBindings {}
121	private method Slice {option args}
122	private method ToggleCustomRange { args }
123	private method ViewToQuaternion {} {
124	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
125	}
126	private method Zoom {option}
127
128	private variable _arcball ""
129
130	private variable _dlist "" ; # list of data objects
131	private variable _obj2ovride ; # maps dataobj => style override
132	private variable _datasets ; # contains all the dataobj-component
133	; # datasets in the server
134	private variable _colormaps ; # contains all the colormaps
135	; # in the server.
136	# The name of the current colormap used. The colormap is global to all
137	# heightmaps displayed.
138	private variable _currentColormap ""
139	private variable _currentNumContours -1
140
141	private variable _click ; # info used for rotate operations
142	private variable _limits ; # autoscale min/max for all axes
143	private variable _view ; # view params for 3D view
144	private variable _settings
145	private variable _changed
146	private variable _reset 1; # Connection to server has been reset.
147
148	private variable _first "" ; # This is the topmost dataset.
149	private variable _start 0
150	private variable _title ""
151	private variable _isolines
152	private variable _contourList
153	private variable _currentLimits ""
154	private variable _widget
155
156	private common _downloadPopup; # download options from popup
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _rotatePending 0
162	private variable _cutplanePending 0
163	private variable _legendPending 0
164	private variable _field ""
165	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
166	private variable _fields
167	private variable _curFldName ""
168	private variable _curFldLabel ""
169
170	private variable _mouseOver ""; # what called LegendRangeAction, vmin or vmax
171	private variable _customRangeClick 1; # what called ToggleCustomRange
172	}
173
174	itk::usual VtkIsosurfaceViewer {
175	keep -background -foreground -cursor -font
176	keep -plotbackground -plotforeground
177	}
178
179	# ----------------------------------------------------------------------
180	# CONSTRUCTOR
181	# ----------------------------------------------------------------------
182	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
183	set _serverType "vtkvis"
184
185	# Rebuild event
186	$_dispatcher register !rebuild
187	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
188
189	# Resize event
190	$_dispatcher register !resize
191	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
192
193	# Rotate event
194	$_dispatcher register !rotate
195	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
196
197	# Legend event
198	$_dispatcher register !legend
199	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
200
201	# Contour levels event
202	$_dispatcher register !contours
203	$_dispatcher dispatch $this !contours \
204	"[itcl::code $this DoChangeContourLevels]; list"
205
206	# X-Cutplane event
207	$_dispatcher register !xcutplane
208	$_dispatcher dispatch $this !xcutplane \
209	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
210
211	# Y-Cutplane event
212	$_dispatcher register !ycutplane
213	$_dispatcher dispatch $this !ycutplane \
214	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
215
216	# Z-Cutplane event
217	$_dispatcher register !zcutplane
218	$_dispatcher dispatch $this !zcutplane \
219	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
220
221	#
222	# Populate parser with commands handle incoming requests
223	#
224	$_parser alias image [itcl::code $this ReceiveImage]
225	$_parser alias dataset [itcl::code $this ReceiveDataset]
226	$_parser alias legend [itcl::code $this ReceiveLegend]
227
228	# Initialize the view to some default parameters.
229	array set _view {
230	-ortho 0
231	-qw 0.853553
232	-qx -0.353553
233	-qy 0.353553
234	-qz 0.146447
235	-xpan 0
236	-ypan 0
237	-zoom 1.0
238	}
239	set _arcball [blt::arcball create 100 100]
240	$_arcball quaternion [ViewToQuaternion]
241
242	array set _contourList {
243	numLevels 10
244	reqValues ""
245	updatePending 0
246	values ""
247	}
248	array set _settings {
249	-axesvisible 1
250	-axislabels 1
251	-axisminorticks 1
252	-axismode "static"
253	-background black
254	-colormap BCGYR
255	-colormapvisible 1
256	-customrange 0
257	-customrangemin 0
258	-customrangemax 1
259	-cutplaneedges 0
260	-cutplanelighting 1
261	-cutplaneopacity 1.0
262	-cutplanepreinterp 1
263	-cutplanesvisible 0
264	-cutplanewireframe 0
265	-field "Default"
266	-isolinecolor white
267	-isosurfaceedges 0
268	-isosurfacelighting 1
269	-isosurfaceopacity 0.6
270	-isosurfacevisible 1
271	-isosurfacewireframe 0
272	-legendvisible 1
273	-numcontours 10
274	-outline 0
275	-xcutplaneposition 50
276	-xcutplanevisible 1
277	-xgrid 0
278	-ycutplaneposition 50
279	-ycutplanevisible 1
280	-ygrid 0
281	-zcutplaneposition 50
282	-zcutplanevisible 1
283	-zgrid 0
284	}
285	array set _changed {
286	-colormap 0
287	-cutplaneedges 0
288	-cutplanelighting 0
289	-cutplaneopacity 0
290	-cutplanepreinterp 0
291	-cutplanesvisible 0
292	-cutplanewireframe 0
293	-isosurfaceedges 0
294	-isosurfacelighting 0
295	-isosurfaceopacity 0
296	-isosurfacevisible 0
297	-isosurfacewireframe 0
298	-numcontours 0
299	-outline 0
300	-xcutplaneposition 0
301	-xcutplanevisible 0
302	-ycutplaneposition 0
303	-ycutplanevisible 0
304	-zcutplaneposition 0
305	-zcutplanevisible 0
306	}
307	array set _widget {
308	-isosurfaceopacity 60
309	-cutplaneopacity 100
310	}
311
312	itk_component add view {
313	canvas $itk_component(plotarea).view \
314	-highlightthickness 0 -borderwidth 0
315	} {
316	usual
317	ignore -highlightthickness -borderwidth -background
318	}
319
320	itk_component add fieldmenu {
321	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
322	-tearoff 0
323	} {
324	usual
325	ignore -background -foreground -relief -tearoff
326	}
327
328	# add an editor for adjusting the legend min and max values
329	itk_component add editor {
330	Rappture::Editor $itk_interior.editor \
331	-activatecommand [itcl::code $this LegendRangeAction activate] \
332	-validatecommand [itcl::code $this LegendRangeAction validate] \
333	-applycommand [itcl::code $this LegendRangeAction apply]
334	}
335
336	set c $itk_component(view)
337	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
338	bind $c <4> [itcl::code $this Zoom in 0.25]
339	bind $c <5> [itcl::code $this Zoom out 0.25]
340	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
341	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
342	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
343	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
344	bind $c <Enter> "focus %W"
345	bind $c <Control-F1> [itcl::code $this ToggleConsole]
346
347	# Fix the scrollregion in case we go off screen
348	$c configure -scrollregion [$c bbox all]
349
350	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
351	set _map(cwidth) -1
352	set _map(cheight) -1
353	set _map(zoom) 1.0
354	set _map(original) ""
355
356	set f [$itk_component(main) component controls]
357	itk_component add reset {
358	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
359	-highlightthickness 0 \
360	-image [Rappture::icon reset-view] \
361	-command [itcl::code $this Zoom reset]
362	} {
363	usual
364	ignore -highlightthickness
365	}
366	pack $itk_component(reset) -side top -padx 2 -pady 2
367	Rappture::Tooltip::for $itk_component(reset) \
368	"Reset the view to the default zoom level"
369
370	itk_component add zoomin {
371	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
372	-highlightthickness 0 \
373	-image [Rappture::icon zoom-in] \
374	-command [itcl::code $this Zoom in]
375	} {
376	usual
377	ignore -highlightthickness
378	}
379	pack $itk_component(zoomin) -side top -padx 2 -pady 2
380	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
381
382	itk_component add zoomout {
383	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
384	-highlightthickness 0 \
385	-image [Rappture::icon zoom-out] \
386	-command [itcl::code $this Zoom out]
387	} {
388	usual
389	ignore -highlightthickness
390	}
391	pack $itk_component(zoomout) -side top -padx 2 -pady 2
392	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
393
394	itk_component add contour {
395	Rappture::PushButton $f.contour \
396	-onimage [Rappture::icon volume-on] \
397	-offimage [Rappture::icon volume-off] \
398	-variable [itcl::scope _settings(-isosurfacevisible)] \
399	-command [itcl::code $this AdjustSetting -isosurfacevisible]
400	}
401	$itk_component(contour) select
402	Rappture::Tooltip::for $itk_component(contour) \
403	"Hide the isosurface"
404	pack $itk_component(contour) -padx 2 -pady 2
405
406	itk_component add cutplane {
407	Rappture::PushButton $f.cutplane \
408	-onimage [Rappture::icon cutbutton] \
409	-offimage [Rappture::icon cutbutton] \
410	-variable [itcl::scope _settings(-cutplanesvisible)] \
411	-command [itcl::code $this AdjustSetting -cutplanesvisible]
412	}
413	Rappture::Tooltip::for $itk_component(cutplane) \
414	"Show the cutplanes"
415	pack $itk_component(cutplane) -padx 2 -pady 2
416
417
418	if { [catch {
419	BuildIsosurfaceTab
420	BuildCutplaneTab
421	BuildAxisTab
422	BuildCameraTab
423	} errs] != 0 } {
424	puts stderr errs=$errs
425	}
426
427	# Legend
428	set _image(legend) [image create photo]
429	itk_component add legend {
430	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
431	} {
432	usual
433	ignore -highlightthickness
434	rename -background -plotbackground plotBackground Background
435	}
436
437	# Hack around the Tk panewindow. The problem is that the requested
438	# size of the 3d view isn't set until an image is retrieved from
439	# the server. So the panewindow uses the tiny size.
440	set w 10000
441	pack forget $itk_component(view)
442	blt::table $itk_component(plotarea) \
443	0,0 $itk_component(view) -fill both -reqwidth $w
444	blt::table configure $itk_component(plotarea) c1 -resize none
445
446	SetupMouseRotationBindings
447	SetupMousePanningBindings
448	SetupKeyboardBindings
449
450
451	#bind $itk_component(view) <ButtonRelease-3> \
452	# [itcl::code $this Pick %x %y]
453
454
455	if {[string equal "x11" [tk windowingsystem]]} {
456	# Bindings for zoom via mouse
457	bind $itk_component(view) <4> [itcl::code $this Zoom out]
458	bind $itk_component(view) <5> [itcl::code $this Zoom in]
459	}
460
461	set _image(download) [image create photo]
462
463	eval itk_initialize $args
464
465	EnableWaitDialog 900
466	Connect
467	}
468
469	# ----------------------------------------------------------------------
470	# DESTRUCTOR
471	# ----------------------------------------------------------------------
472	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
473	Disconnect
474	image delete $_image(plot)
475	image delete $_image(download)
476	catch { blt::arcball destroy $_arcball }
477	}
478
479	itcl::body Rappture::VtkIsosurfaceViewer::SetupMouseRotationBindings {} {
480	# Bindings for rotation via mouse
481	bind $itk_component(view) <ButtonPress-1> \
482	[itcl::code $this Rotate click %x %y]
483	bind $itk_component(view) <B1-Motion> \
484	[itcl::code $this Rotate drag %x %y]
485	bind $itk_component(view) <ButtonRelease-1> \
486	[itcl::code $this Rotate release %x %y]
487	}
488
489	itcl::body Rappture::VtkIsosurfaceViewer::DisableMouseRotationBindings {} {
490	# Bindings for rotation via mouse
491	bind $itk_component(view) <ButtonPress-1> ""
492	bind $itk_component(view) <B1-Motion> ""
493	bind $itk_component(view) <ButtonRelease-1> ""
494	}
495
496	itcl::body Rappture::VtkIsosurfaceViewer::SetupMousePanningBindings {} {
497	# Bindings for panning via mouse
498	bind $itk_component(view) <ButtonPress-2> \
499	[itcl::code $this Pan click %x %y]
500	bind $itk_component(view) <B2-Motion> \
501	[itcl::code $this Pan drag %x %y]
502	bind $itk_component(view) <ButtonRelease-2> \
503	[itcl::code $this Pan release %x %y]
504	}
505
506	itcl::body Rappture::VtkIsosurfaceViewer::SetupKeyboardBindings {} {
507	# Bindings for panning via keyboard
508	bind $itk_component(view) <KeyPress-Left> \
509	[itcl::code $this Pan set -10 0]
510	bind $itk_component(view) <KeyPress-Right> \
511	[itcl::code $this Pan set 10 0]
512	bind $itk_component(view) <KeyPress-Up> \
513	[itcl::code $this Pan set 0 -10]
514	bind $itk_component(view) <KeyPress-Down> \
515	[itcl::code $this Pan set 0 10]
516	bind $itk_component(view) <Shift-KeyPress-Left> \
517	[itcl::code $this Pan set -2 0]
518	bind $itk_component(view) <Shift-KeyPress-Right> \
519	[itcl::code $this Pan set 2 0]
520	bind $itk_component(view) <Shift-KeyPress-Up> \
521	[itcl::code $this Pan set 0 -2]
522	bind $itk_component(view) <Shift-KeyPress-Down> \
523	[itcl::code $this Pan set 0 2]
524
525	# Bindings for zoom via keyboard
526	bind $itk_component(view) <KeyPress-Prior> \
527	[itcl::code $this Zoom out]
528	bind $itk_component(view) <KeyPress-Next> \
529	[itcl::code $this Zoom in]
530
531	bind $itk_component(view) <Enter> "focus $itk_component(view)"
532	}
533
534	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
535	if { $_width < 2 } {
536	set _width 500
537	}
538	if { $_height < 2 } {
539	set _height 500
540	}
541	set _start [clock clicks -milliseconds]
542	SendCmd "screen size $_width $_height"
543
544	EventuallyRequestLegend
545	set _resizePending 0
546	}
547
548	itcl::body Rappture::VtkIsosurfaceViewer::DoChangeContourLevels {} {
549	GenerateContourList
550	SendCmd [list contour3d contourlist $_contourList(values)]
551	SendCmd [list camera reset]
552	DrawLegend
553	set _contourList(updatePending) 0
554	}
555
556	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
557	SendCmd "camera orient [ViewToQuaternion]"
558	set _rotatePending 0
559	}
560
561	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
562	if { !$_legendPending } {
563	set _legendPending 1
564	$_dispatcher event -idle !legend
565	}
566	}
567
568	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
569	set _width $w
570	set _height $h
571	$_arcball resize $w $h
572	if { !$_resizePending } {
573	set _resizePending 1
574	$_dispatcher event -after 400 !resize
575	}
576	}
577
578	set rotate_delay 100
579
580	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
581	QuaternionToView $q
582	if { !$_rotatePending } {
583	set _rotatePending 1
584	global rotate_delay
585	$_dispatcher event -after $rotate_delay !rotate
586	}
587	}
588
589	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
590	if { !$_cutplanePending } {
591	set _cutplanePending 1
592	$_dispatcher event -after 100 !${axis}cutplane
593	}
594	}
595
596	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyChangeContourLevels {} {
597	set n $_contourList(numLevels)
598	set _contourList(values) ""
599	if { !$_contourList(updatePending) } {
600	set _contourList(updatePending) 1
601	global rotate_delay
602	$_dispatcher event -after $rotate_delay !contours
603	}
604	}
605
606	# ----------------------------------------------------------------------
607	# USAGE: add <dataobj> ?<settings>?
608	#
609	# Clients use this to add a data object to the plot. The optional
610	# <settings> are used to configure the plot. Allowed settings are
611	# -color, -brightness, -width, -linestyle, and -raise.
612	# ----------------------------------------------------------------------
613	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
614	if { ![$dataobj isvalid] } {
615	return; # Object doesn't contain valid data.
616	}
617	array set params {
618	-color auto
619	-width 1
620	-linestyle solid
621	-brightness 0
622	-raise 0
623	-description ""
624	-param ""
625	-type ""
626	}
627	array set params $settings
628	set params(-description) ""
629	set params(-param) ""
630	array set params $settings
631
632	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
633	# can't handle -autocolors yet
634	set params(-color) black
635	}
636	set pos [lsearch -exact $_dlist $dataobj]
637	if {$pos < 0} {
638	lappend _dlist $dataobj
639	}
640	set _obj2ovride($dataobj-color) $params(-color)
641	set _obj2ovride($dataobj-width) $params(-width)
642	set _obj2ovride($dataobj-raise) $params(-raise)
643	$_dispatcher event -idle !rebuild
644	}
645
646	# ----------------------------------------------------------------------
647	# USAGE: delete ?<dataobj1> <dataobj2> ...?
648	#
649	# Clients use this to delete a dataobj from the plot. If no dataobjs
650	# are specified, then all dataobjs are deleted. No data objects are
651	# deleted. They are only removed from the display list.
652	#
653	# ----------------------------------------------------------------------
654	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
655	if { [llength $args] == 0} {
656	set args $_dlist
657	}
658	# Delete all specified dataobjs
659	set changed 0
660	foreach dataobj $args {
661	set pos [lsearch -exact $_dlist $dataobj]
662	if { $pos < 0 } {
663	continue; # Don't know anything about it.
664	}
665	# Remove it from the dataobj list.
666	set _dlist [lreplace $_dlist $pos $pos]
667	array unset _obj2ovride $dataobj-*
668	array unset _settings $dataobj-*
669	set changed 1
670	}
671	# If anything changed, then rebuild the plot
672	if { $changed } {
673	$_dispatcher event -idle !rebuild
674	}
675	}
676
677	# ----------------------------------------------------------------------
678	# USAGE: get ?-objects?
679	# USAGE: get ?-visible?
680	# USAGE: get ?-image view?
681	#
682	# Clients use this to query the list of objects being plotted, in
683	# order from bottom to top of this result. The optional "-image"
684	# flag can also request the internal images being shown.
685	# ----------------------------------------------------------------------
686	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
687	if {[llength $args] == 0} {
688	set args "-objects"
689	}
690
691	set op [lindex $args 0]
692	switch -- $op {
693	"-objects" {
694	# put the dataobj list in order according to -raise options
695	set dlist {}
696	foreach dataobj $_dlist {
697	if { ![IsValidObject $dataobj] } {
698	continue
699	}
700	if {[info exists _obj2ovride($dataobj-raise)] &&
701	$_obj2ovride($dataobj-raise)} {
702	set dlist [linsert $dlist 0 $dataobj]
703	} else {
704	lappend dlist $dataobj
705	}
706	}
707	return $dlist
708	}
709	"-visible" {
710	set dlist {}
711	foreach dataobj $_dlist {
712	if { ![IsValidObject $dataobj] } {
713	continue
714	}
715	if { ![info exists _obj2ovride($dataobj-raise)] } {
716	# No setting indicates that the object isn't visible.
717	continue
718	}
719	# Otherwise use the -raise parameter to put the object to
720	# the front of the list.
721	if { $_obj2ovride($dataobj-raise) } {
722	set dlist [linsert $dlist 0 $dataobj]
723	} else {
724	lappend dlist $dataobj
725	}
726	}
727	return $dlist
728	}
729	-image {
730	if {[llength $args] != 2} {
731	error "wrong # args: should be \"get -image view\""
732	}
733	switch -- [lindex $args end] {
734	view {
735	return $_image(plot)
736	}
737	default {
738	error "bad image name \"[lindex $args end]\": should be view"
739	}
740	}
741	}
742	default {
743	error "bad option \"$op\": should be -objects or -image"
744	}
745	}
746	}
747
748	# ----------------------------------------------------------------------
749	# USAGE: scale ?<data1> <data2> ...?
750	#
751	# Sets the default limits for the overall plot according to the
752	# limits of the data for all of the given <data> objects. This
753	# accounts for all objects--even those not showing on the screen.
754	# Because of this, the limits are appropriate for all objects as
755	# the user scans through data in the ResultSet viewer.
756	# ----------------------------------------------------------------------
757	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
758	foreach dataobj $args {
759	if { ![$dataobj isvalid] } {
760	continue; # Object doesn't contain valid data.
761	}
762	foreach axis { x y z } {
763	set lim [$dataobj limits $axis]
764	if { ![info exists _limits($axis)] } {
765	set _limits($axis) $lim
766	continue
767	}
768	foreach {min max} $lim break
769	foreach {amin amax} $_limits($axis) break
770	if { $amin > $min } {
771	set amin $min
772	}
773	if { $amax < $max } {
774	set amax $max
775	}
776	set _limits($axis) [list $amin $amax]
777	}
778	foreach { fname lim } [$dataobj fieldlimits] {
779	if { ![info exists _limits($fname)] } {
780	set _limits($fname) $lim
781
782	# set reasonable defaults for
783	# customrangevmin and customrangevmax
784	foreach {min max} $lim break
785	SetMinMaxGauges $min $max
786	set _settings(-customrangemin) $min
787	set _settings(-customrangemax) $max
788
789	continue
790	}
791	foreach {min max} $lim break
792	foreach {fmin fmax} $_limits($fname) break
793	if { ! $_settings(-customrange) } {
794	SetMinMaxGauges $fmin $fmax
795	}
796	if { $fmin > $min } {
797	set fmin $min
798	}
799	if { $fmax < $max } {
800	set fmax $max
801	}
802	set _limits($fname) [list $fmin $fmax]
803	}
804	}
805	}
806
807	# ----------------------------------------------------------------------
808	# USAGE: download coming
809	# USAGE: download controls <downloadCommand>
810	# USAGE: download now
811	#
812	# Clients use this method to create a downloadable representation
813	# of the plot. Returns a list of the form {ext string}, where
814	# "ext" is the file extension (indicating the type of data) and
815	# "string" is the data itself.
816	# ----------------------------------------------------------------------
817	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
818	switch $option {
819	coming {
820	if {[catch {
821	blt::winop snap $itk_component(plotarea) $_image(download)
822	}]} {
823	$_image(download) configure -width 1 -height 1
824	$_image(download) put #000000
825	}
826	}
827	controls {
828	set popup .vtkviewerdownload
829	if { ![winfo exists .vtkviewerdownload] } {
830	set inner [BuildDownloadPopup $popup [lindex $args 0]]
831	} else {
832	set inner [$popup component inner]
833	}
834	set _downloadPopup(image_controls) $inner.image_frame
835	set num [llength [get]]
836	set num [expr {($num == 1) ? "1 result" : "$num results"}]
837	set word [Rappture::filexfer::label downloadWord]
838	$inner.summary configure -text "$word $num in the following format:"
839	update idletasks ;# Fix initial sizes
840	return $popup
841	}
842	now {
843	set popup .vtkviewerdownload
844	if {[winfo exists .vtkviewerdownload]} {
845	$popup deactivate
846	}
847	switch -- $_downloadPopup(format) {
848	"image" {
849	return [$this GetImage [lindex $args 0]]
850	}
851	"vtk" {
852	return [$this GetVtkData [lindex $args 0]]
853	}
854	}
855	return ""
856	}
857	default {
858	error "bad option \"$option\": should be coming, controls, now"
859	}
860	}
861	}
862
863	# ----------------------------------------------------------------------
864	# USAGE: Connect ?<host:port>,<host:port>...?
865	#
866	# Clients use this method to establish a connection to a new
867	# server, or to reestablish a connection to the previous server.
868	# Any existing connection is automatically closed.
869	# ----------------------------------------------------------------------
870	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
871	set _hosts [GetServerList "vtkvis"]
872	if { "" == $_hosts } {
873	return 0
874	}
875	set _reset 1
876	set result [VisViewer::Connect $_hosts]
877	if { $result } {
878	if { $_reportClientInfo } {
879	# Tell the server the viewer, hub, user and session.
880	# Do this immediately on connect before buffering any commands
881	global env
882
883	set info {}
884	set user "???"
885	if { [info exists env(USER)] } {
886	set user $env(USER)
887	}
888	set session "???"
889	if { [info exists env(SESSION)] } {
890	set session $env(SESSION)
891	}
892	lappend info "version" "$Rappture::version"
893	lappend info "build" "$Rappture::build"
894	lappend info "svnurl" "$Rappture::svnurl"
895	lappend info "installdir" "$Rappture::installdir"
896	lappend info "hub" [exec hostname]
897	lappend info "client" "vtkisosurfaceviewer"
898	lappend info "user" $user
899	lappend info "session" $session
900	SendCmd "clientinfo [list $info]"
901	}
902
903	set w [winfo width $itk_component(view)]
904	set h [winfo height $itk_component(view)]
905	EventuallyResize $w $h
906	}
907	return $result
908	}
909
910	#
911	# isconnected --
912	#
913	# Indicates if we are currently connected to the visualization server.
914	#
915	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
916	return [VisViewer::IsConnected]
917	}
918
919	#
920	# disconnect --
921	#
922	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
923	Disconnect
924	set _reset 1
925	}
926
927	#
928	# Disconnect --
929	#
930	# Clients use this method to disconnect from the current rendering
931	# server.
932	#
933	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
934	VisViewer::Disconnect
935
936	$_dispatcher cancel !rebuild
937	$_dispatcher cancel !resize
938	$_dispatcher cancel !rotate
939	$_dispatcher cancel !xcutplane
940	$_dispatcher cancel !ycutplane
941	$_dispatcher cancel !zcutplane
942	$_dispatcher cancel !legend
943	# disconnected -- no more data sitting on server
944	array unset _datasets
945	array unset _colormaps
946	}
947
948	# ----------------------------------------------------------------------
949	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
950	#
951	# Invoked automatically whenever the "image" command comes in from
952	# the rendering server. Indicates that binary image data with the
953	# specified <size> will follow.
954	# ----------------------------------------------------------------------
955	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
956	array set info {
957	-token "???"
958	-bytes 0
959	-type image
960	}
961	array set info $args
962	set bytes [ReceiveBytes $info(-bytes)]
963	if { $info(-type) == "image" } {
964	if 0 {
965	set f [open "last.ppm" "w"]
966	fconfigure $f -encoding binary
967	puts -nonewline $f $bytes
968	close $f
969	}
970	$_image(plot) configure -data $bytes
971	#set time [clock seconds]
972	#set date [clock format $time]
973	#set w [image width $_image(plot)]
974	#set h [image height $_image(plot)]
975	#puts stderr "$date: received image ${w}x${h} image"
976	if { $_start > 0 } {
977	set finish [clock clicks -milliseconds]
978	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
979	set _start 0
980	}
981	} elseif { $info(type) == "print" } {
982	set tag $this-print-$info(-token)
983	set _hardcopy($tag) $bytes
984	}
985	}
986
987	#
988	# ReceiveDataset --
989	#
990	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
991	if { ![isconnected] } {
992	return
993	}
994	set option [lindex $args 0]
995	switch -- $option {
996	"scalar" {
997	set option [lindex $args 1]
998	switch -- $option {
999	"world" {
1000	foreach { x y z value tag } [lrange $args 2 end] break
1001	}
1002	"pixel" {
1003	foreach { x y value tag } [lrange $args 2 end] break
1004	}
1005	}
1006	}
1007	"vector" {
1008	set option [lindex $args 1]
1009	switch -- $option {
1010	"world" {
1011	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
1012	}
1013	"pixel" {
1014	foreach { x y vx vy vz tag } [lrange $args 2 end] break
1015	}
1016	}
1017	}
1018	"names" {
1019	foreach { name } [lindex $args 1] {
1020	#puts stderr "Dataset: $name"
1021	}
1022	}
1023	default {
1024	error "unknown dataset option \"$option\" from server"
1025	}
1026	}
1027	}
1028
1029	# ----------------------------------------------------------------------
1030	# USAGE: Rebuild
1031	#
1032	# Called automatically whenever something changes that affects the
1033	# data in the widget. Clears any existing data and rebuilds the
1034	# widget to display new data.
1035	# ----------------------------------------------------------------------
1036	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
1037	set w [winfo width $itk_component(view)]
1038	set h [winfo height $itk_component(view)]
1039	if { $w < 2 \|\| $h < 2 } {
1040	update
1041	$_dispatcher event -idle !rebuild
1042	return
1043	}
1044
1045	# Turn on buffering of commands to the server. We don't want to
1046	# be preempted by a server disconnect/reconnect (which automatically
1047	# generates a new call to Rebuild).
1048	StartBufferingCommands
1049
1050	if { $_reset } {
1051	set _width $w
1052	set _height $h
1053	$_arcball resize $w $h
1054	DoResize
1055
1056	# Reset the camera and other view parameters
1057	$_arcball quaternion [ViewToQuaternion]
1058	InitSettings -ortho
1059	DoRotate
1060	PanCamera
1061	set _first ""
1062	InitSettings -background \
1063	-xgrid -ygrid -zgrid -axismode \
1064	-axesvisible -axislabels -axisminorticks
1065	#SendCmd "axis lformat all %g"
1066	StopBufferingCommands
1067	SendCmd "imgflush"
1068	StartBufferingCommands
1069	}
1070	set _first ""
1071	SendCmd "dataset visible 0"
1072	eval scale $_dlist
1073	foreach dataobj [get -objects] {
1074	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
1075	set _first $dataobj
1076	SetCurrentFieldName $dataobj
1077	}
1078	foreach comp [$dataobj components] {
1079	set tag $dataobj-$comp
1080	if { ![info exists _datasets($tag)] } {
1081	set bytes [$dataobj vtkdata $comp]
1082	if 0 {
1083	set f [open "/tmp/isosurface.vtk" "w"]
1084	fconfigure $f -translation binary -encoding binary
1085	puts -nonewline $f $bytes
1086	close $f
1087	}
1088	set length [string length $bytes]
1089	if { $_reportClientInfo } {
1090	set info {}
1091	lappend info "tool_id" [$dataobj hints toolid]
1092	lappend info "tool_name" [$dataobj hints toolname]
1093	lappend info "tool_title" [$dataobj hints tooltitle]
1094	lappend info "tool_command" [$dataobj hints toolcommand]
1095	lappend info "tool_revision" [$dataobj hints toolrevision]
1096	lappend info "dataset_label" [$dataobj hints label]
1097	lappend info "dataset_size" $length
1098	lappend info "dataset_tag" $tag
1099	SendCmd "clientinfo [list $info]"
1100	}
1101	SendCmd "dataset add $tag data follows $length"
1102	SendData $bytes
1103	set _datasets($tag) 1
1104	SetObjectStyle $dataobj $comp
1105	}
1106	if { [info exists _obj2ovride($dataobj-raise)] } {
1107	SendCmd "contour3d visible 1 $tag"
1108	}
1109	}
1110	}
1111
1112	InitSettings -cutplanesvisible -isosurfacevisible -outline
1113	if { $_reset } {
1114	# These are settings that rely on a dataset being loaded.
1115	InitSettings \
1116	-field -range \
1117	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
1118	-isosurfacewireframe \
1119	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1120	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1121	-cutplanepreinterp -numcontours
1122
1123	Zoom reset
1124	foreach axis { x y z } {
1125	set label ""
1126	if { $_first != "" } {
1127	set label [$_first hints ${axis}label]
1128	}
1129	if { $label == "" } {
1130	set label [string toupper $axis]
1131	}
1132	# May be a space in the axis label
1133	SendCmd [list axis name $axis $label]
1134	}
1135	if { [array size _fields] < 2 } {
1136	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1137	}
1138	set _reset 0
1139	}
1140	# Redraw the legend even if we're using the same colormap. The position
1141	# of the isolines may have changed because the range of data changed.
1142	DrawLegend
1143
1144	# Actually write the commands to the server socket. If it fails, we don't
1145	# care. We're finished here.
1146	blt::busy hold $itk_component(hull)
1147	StopBufferingCommands; # Turn off buffering and send commands.
1148	blt::busy release $itk_component(hull)
1149	}
1150
1151	# ----------------------------------------------------------------------
1152	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1153	#
1154	# Returns a list of server IDs for the current datasets being displayed. This
1155	# is normally a single ID, but it might be a list of IDs if the current data
1156	# object has multiple components.
1157	# ----------------------------------------------------------------------
1158	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1159	set flag [lindex $args 0]
1160	switch -- $flag {
1161	"-all" {
1162	if { [llength $args] > 1 } {
1163	error "CurrentDatasets: can't specify dataobj after \"-all\""
1164	}
1165	set dlist [get -objects]
1166	}
1167	"-visible" {
1168	if { [llength $args] > 1 } {
1169	set dlist {}
1170	set args [lrange $args 1 end]
1171	foreach dataobj $args {
1172	if { [info exists _obj2ovride($dataobj-raise)] } {
1173	lappend dlist $dataobj
1174	}
1175	}
1176	} else {
1177	set dlist [get -visible]
1178	}
1179	}
1180	default {
1181	set dlist $args
1182	}
1183	}
1184	set rlist ""
1185	foreach dataobj $dlist {
1186	foreach comp [$dataobj components] {
1187	set tag $dataobj-$comp
1188	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1189	lappend rlist $tag
1190	}
1191	}
1192	}
1193	return $rlist
1194	}
1195
1196	# ----------------------------------------------------------------------
1197	# USAGE: Zoom in
1198	# USAGE: Zoom out
1199	# USAGE: Zoom reset
1200	#
1201	# Called automatically when the user clicks on one of the zoom
1202	# controls for this widget. Changes the zoom for the current view.
1203	# ----------------------------------------------------------------------
1204	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1205	switch -- $option {
1206	"in" {
1207	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1208	SendCmd "camera zoom $_view(-zoom)"
1209	}
1210	"out" {
1211	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1212	SendCmd "camera zoom $_view(-zoom)"
1213	}
1214	"reset" {
1215	array set _view {
1216	-qw 0.853553
1217	-qx -0.353553
1218	-qy 0.353553
1219	-qz 0.146447
1220	-xpan 0
1221	-ypan 0
1222	-zoom 1.0
1223	}
1224	if { $_first != "" } {
1225	set location [$_first hints camera]
1226	if { $location != "" } {
1227	array set _view $location
1228	}
1229	}
1230	$_arcball quaternion [ViewToQuaternion]
1231	DoRotate
1232	SendCmd "camera reset"
1233	}
1234	}
1235	}
1236
1237	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1238	set x $_view(-xpan)
1239	set y $_view(-ypan)
1240	SendCmd "camera pan $x $y"
1241	}
1242
1243	# ----------------------------------------------------------------------
1244	# USAGE: Rotate click <x> <y>
1245	# USAGE: Rotate drag <x> <y>
1246	# USAGE: Rotate release <x> <y>
1247	#
1248	# Called automatically when the user clicks/drags/releases in the
1249	# plot area. Moves the plot according to the user's actions.
1250	# ----------------------------------------------------------------------
1251	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1252	switch -- $option {
1253	"click" {
1254	$itk_component(view) configure -cursor fleur
1255	set _click(x) $x
1256	set _click(y) $y
1257	}
1258	"drag" {
1259	if {[array size _click] == 0} {
1260	Rotate click $x $y
1261	} else {
1262	set w [winfo width $itk_component(view)]
1263	set h [winfo height $itk_component(view)]
1264	if {$w <= 0 \|\| $h <= 0} {
1265	return
1266	}
1267
1268	if {[catch {
1269	# this fails sometimes for no apparent reason
1270	set dx [expr {double($x-$_click(x))/$w}]
1271	set dy [expr {double($y-$_click(y))/$h}]
1272	}]} {
1273	return
1274	}
1275	if { $dx == 0 && $dy == 0 } {
1276	return
1277	}
1278	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1279	EventuallyRotate $q
1280	set _click(x) $x
1281	set _click(y) $y
1282	}
1283	}
1284	"release" {
1285	Rotate drag $x $y
1286	$itk_component(view) configure -cursor ""
1287	catch {unset _click}
1288	}
1289	default {
1290	error "bad option \"$option\": should be click, drag, release"
1291	}
1292	}
1293	}
1294
1295	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1296	foreach tag [CurrentDatasets -visible] {
1297	SendCmd "dataset getscalar pixel $x $y $tag"
1298	}
1299	}
1300
1301	# ----------------------------------------------------------------------
1302	# USAGE: $this Pan click x y
1303	# $this Pan drag x y
1304	# $this Pan release x y
1305	#
1306	# Called automatically when the user clicks on one of the zoom
1307	# controls for this widget. Changes the zoom for the current view.
1308	# ----------------------------------------------------------------------
1309	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1310	switch -- $option {
1311	"set" {
1312	set w [winfo width $itk_component(view)]
1313	set h [winfo height $itk_component(view)]
1314	set x [expr $x / double($w)]
1315	set y [expr $y / double($h)]
1316	set _view(-xpan) [expr $_view(-xpan) + $x]
1317	set _view(-ypan) [expr $_view(-ypan) + $y]
1318	PanCamera
1319	return
1320	}
1321	"click" {
1322	set _click(x) $x
1323	set _click(y) $y
1324	$itk_component(view) configure -cursor hand1
1325	}
1326	"drag" {
1327	if { ![info exists _click(x)] } {
1328	set _click(x) $x
1329	}
1330	if { ![info exists _click(y)] } {
1331	set _click(y) $y
1332	}
1333	set w [winfo width $itk_component(view)]
1334	set h [winfo height $itk_component(view)]
1335	set dx [expr ($_click(x) - $x)/double($w)]
1336	set dy [expr ($_click(y) - $y)/double($h)]
1337	set _click(x) $x
1338	set _click(y) $y
1339	set _view(-xpan) [expr $_view(-xpan) - $dx]
1340	set _view(-ypan) [expr $_view(-ypan) - $dy]
1341	PanCamera
1342	}
1343	"release" {
1344	Pan drag $x $y
1345	$itk_component(view) configure -cursor ""
1346	}
1347	default {
1348	error "unknown option \"$option\": should set, click, drag, or release"
1349	}
1350	}
1351	}
1352
1353	# ----------------------------------------------------------------------
1354	# USAGE: InitSettings <what> ?<value>?
1355	#
1356	# Used internally to update rendering settings whenever parameters
1357	# change in the popup settings panel. Sends the new settings off
1358	# to the back end.
1359	# ----------------------------------------------------------------------
1360	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1361	foreach spec $args {
1362	if { [info exists _settings($_first-$spec)] } {
1363	# Reset global setting with dataobj specific setting
1364	set _settings($spec) $_settings($_first-$spec)
1365	}
1366	AdjustSetting $spec
1367	}
1368	}
1369
1370	#
1371	# AdjustSetting --
1372	#
1373	# Changes/updates a specific setting in the widget. There are
1374	# usually user-setable option. Commands are sent to the render
1375	# server.
1376	#
1377	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1378	if { ![isconnected] } {
1379	return
1380	}
1381	switch -- $what {
1382	"-axesvisible" {
1383	set bool $_settings($what)
1384	SendCmd "axis visible all $bool"
1385	}
1386	"-axislabels" {
1387	set bool $_settings($what)
1388	SendCmd "axis labels all $bool"
1389	}
1390	"-axisminorticks" {
1391	set bool $_settings($what)
1392	SendCmd "axis minticks all $bool"
1393	}
1394	"-axismode" {
1395	set mode [$itk_component(axisMode) value]
1396	set mode [$itk_component(axisMode) translate $mode]
1397	set _settings($what) $mode
1398	SendCmd "axis flymode $mode"
1399	}
1400	"-background" {
1401	set bgcolor [$itk_component(background) value]
1402	array set fgcolors {
1403	"black" "white"
1404	"white" "black"
1405	"grey" "black"
1406	}
1407	configure -plotbackground $bgcolor \
1408	-plotforeground $fgcolors($bgcolor)
1409	$itk_component(view) delete "legend"
1410	DrawLegend
1411	}
1412	"-cutplaneedges" {
1413	set _changed($what) 1
1414	set bool $_settings($what)
1415	SendCmd "cutplane edges $bool"
1416	}
1417	"-cutplanelighting" {
1418	set _changed($what) 1
1419	set bool $_settings($what)
1420	SendCmd "cutplane lighting $bool"
1421	}
1422	"-cutplaneopacity" {
1423	set _changed($what) 1
1424	set _settings($what) [expr $_widget($what) * 0.01]
1425	SendCmd "cutplane opacity $_settings($what)"
1426	}
1427	"-cutplanepreinterp" {
1428	set _changed($what) 1
1429	set bool $_settings($what)
1430	SendCmd "cutplane preinterp $bool"
1431	}
1432	"-cutplanesvisible" {
1433	set _changed($what) 1
1434	set bool $_settings($what)
1435	SendCmd "cutplane visible 0"
1436	if { $bool } {
1437	foreach tag [CurrentDatasets -visible] {
1438	SendCmd "cutplane visible $bool $tag"
1439	}
1440	}
1441	if { $bool } {
1442	Rappture::Tooltip::for $itk_component(cutplane) \
1443	"Hide the cutplanes"
1444	} else {
1445	Rappture::Tooltip::for $itk_component(cutplane) \
1446	"Show the cutplanes"
1447	}
1448	}
1449	"-cutplanewireframe" {
1450	set _changed($what) 1
1451	set bool $_settings($what)
1452	SendCmd "cutplane wireframe $bool"
1453	}
1454	"-colormap" {
1455	set _changed($what) 1
1456	StartBufferingCommands
1457	set color [$itk_component(colormap) value]
1458	set _settings($what) $color
1459	if { $color == "none" } {
1460	if { $_settings(-colormapvisible) } {
1461	SendCmd "contour3d colormode constant {}"
1462	set _settings(-colormapvisible) 0
1463	}
1464	} else {
1465	if { !$_settings(-colormapvisible) } {
1466	SendCmd "contour3d colormode $_colorMode $_curFldName"
1467	set _settings(-colormapvisible) 1
1468	}
1469	SetCurrentColormap $color
1470	}
1471	StopBufferingCommands
1472	EventuallyRequestLegend
1473	}
1474	"-field" {
1475	set label [$itk_component(field) value]
1476	set fname [$itk_component(field) translate $label]
1477	set _settings($what) $fname
1478	if { [info exists _fields($fname)] } {
1479	foreach { label units components } $_fields($fname) break
1480	if { $components > 1 } {
1481	set _colorMode vmag
1482	} else {
1483	set _colorMode scalar
1484	}
1485	set _curFldName $fname
1486	set _curFldLabel $label
1487	} else {
1488	puts stderr "unknown field \"$fname\""
1489	return
1490	}
1491	SendCmd "dataset scalar $_curFldName"
1492	if { ![info exists _limits($_curFldName)] } {
1493	SendCmd "dataset maprange all"
1494	} else {
1495	if { $_settings(-customrange) } {
1496	set vmin [$itk_component(min) value]
1497	set vmax [$itk_component(max) value]
1498	} else {
1499	foreach { vmin vmax } $_limits($_curFldName) break
1500	# set the min / max gauges with limits from the field
1501	# the legend's min and max text will be updated
1502	# when the legend is redrawn in DrawLegend
1503	SetMinMaxGauges $vmin $vmax
1504	}
1505	SendCmd "dataset maprange explicit $vmin $vmax $_curFldName"
1506	}
1507	SendCmd "cutplane colormode $_colorMode $_curFldName"
1508	SendCmd "contour3d colormode $_colorMode $_curFldName"
1509	SendCmd "camera reset"
1510	GenerateContourList
1511	DrawLegend
1512	}
1513	"-isolinecolor" {
1514	set color [$itk_component(isolineColor) value]
1515	set _settings($what) $color
1516	DrawLegend
1517	}
1518	"-isosurfaceedges" {
1519	set _changed($what) 1
1520	set bool $_settings($what)
1521	SendCmd "contour3d edges $bool"
1522	}
1523	"-isosurfacelighting" {
1524	set _changed($what) 1
1525	set bool $_settings($what)
1526	SendCmd "contour3d lighting $bool"
1527	}
1528	"-isosurfaceopacity" {
1529	set _changed($what) 1
1530	set _settings($what) [expr $_widget($what) * 0.01]
1531	SendCmd "contour3d opacity $_settings($what)"
1532	}
1533	"-isosurfacevisible" {
1534	set _changed($what) 1
1535	set bool $_settings($what)
1536	SendCmd "contour3d visible 0"
1537	if { $bool } {
1538	foreach tag [CurrentDatasets -visible] {
1539	SendCmd "contour3d visible $bool $tag"
1540	}
1541	Rappture::Tooltip::for $itk_component(contour) \
1542	"Hide the isosurface"
1543	} else {
1544	Rappture::Tooltip::for $itk_component(contour) \
1545	"Show the isosurface"
1546	}
1547	}
1548	"-isosurfacewireframe" {
1549	set _changed($what) 1
1550	set bool $_settings($what)
1551	SendCmd "contour3d wireframe $bool"
1552	}
1553	"-legendvisible" {
1554	if { !$_settings($what) } {
1555	$itk_component(view) delete legend
1556	}
1557	DrawLegend
1558	}
1559	"-numcontours" {
1560	set _changed($what) 1
1561	set _settings($what) [$itk_component(numcontours) value]
1562	if { $_contourList(numLevels) != $_settings($what) } {
1563	set _contourList(numLevels) $_settings($what)
1564	EventuallyChangeContourLevels
1565	}
1566	}
1567	"-ortho" {
1568	set bool $_view($what)
1569	if { $bool } {
1570	SendCmd "camera mode ortho"
1571	} else {
1572	SendCmd "camera mode persp"
1573	}
1574	}
1575	"-outline" {
1576	set _changed($what) 1
1577	set bool $_settings($what)
1578	SendCmd "outline visible 0"
1579	if { $bool } {
1580	foreach tag [CurrentDatasets -visible] {
1581	SendCmd "outline visible $bool $tag"
1582	}
1583	}
1584	}
1585	"-range" {
1586	if { $_settings(-customrange) } {
1587	set vmin [$itk_component(min) value]
1588	set vmax [$itk_component(max) value]
1589	} else {
1590	foreach { vmin vmax } $_limits($_curFldName) break
1591	}
1592	GenerateContourList
1593	SendCmd [list contour3d contourlist $_contourList(values)]
1594	SendCmd "dataset maprange explicit $vmin $vmax $_curFldName"
1595	DrawLegend
1596	}
1597	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1598	set _changed($what) 1
1599	set axis [string tolower [string range $what 1 1]]
1600	set bool $_settings($what)
1601	if { $bool } {
1602	$itk_component(${axis}position) configure -state normal \
1603	-troughcolor white
1604	} else {
1605	$itk_component(${axis}position) configure -state disabled \
1606	-troughcolor grey82
1607	}
1608	SendCmd "cutplane axis $axis $bool"
1609	}
1610	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1611	set _changed($what) 1
1612	set axis [string tolower [string range $what 1 1]]
1613	set pos [expr $_settings($what) * 0.01]
1614	SendCmd "cutplane slice ${axis} ${pos}"
1615	set _cutplanePending 0
1616	}
1617	"-xgrid" - "-ygrid" - "-zgrid" {
1618	set axis [string tolower [string range $what 1 1]]
1619	set bool $_settings($what)
1620	SendCmd "axis grid $axis $bool"
1621	}
1622	default {
1623	error "don't know how to fix $what"
1624	}
1625	}
1626	}
1627
1628	#
1629	# RequestLegend --
1630	#
1631	# Request a new legend from the server. The size of the legend
1632	# is determined from the height of the canvas.
1633	#
1634	# This should be called when
1635	# 1. A new current colormap is set.
1636	# 2. Window is resized.
1637	# 3. The limits of the data have changed. (Just need a redraw).
1638	# 4. Number of isolines have changed. (Just need a redraw).
1639	# 5. Legend becomes visible (Just need a redraw).
1640	#
1641	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1642	set _legendPending 0
1643	if { ![info exists _fields($_curFldName)] } {
1644	return
1645	}
1646	set fname $_curFldName
1647	set font "Arial 8"
1648	set lineht [font metrics $font -linespace]
1649	set w 12
1650	set h [expr {$_height - 2 * ($lineht + 2)}]
1651	if { $h < 1 } {
1652	return
1653	}
1654	if { [string match "component*" $fname] } {
1655	set title ""
1656	} else {
1657	if { [info exists _fields($fname)] } {
1658	foreach { title units } $_fields($fname) break
1659	if { $units != "" } {
1660	set title [format "%s (%s)" $title $units]
1661	}
1662	} else {
1663	set title $fname
1664	}
1665	}
1666	# If there's a title too, subtract one more line
1667	if { $title != "" } {
1668	incr h -$lineht
1669	}
1670	# Set the legend on the first isosurface dataset.
1671	if { $_currentColormap != "" } {
1672	set cmap $_currentColormap
1673	if { ![info exists _colormaps($cmap)] } {
1674	BuildColormap $cmap
1675	set _colormaps($cmap) 1
1676	}
1677	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1678	SendCmd "legend2 $cmap $w $h"
1679	}
1680	}
1681
1682	# ----------------------------------------------------------------------
1683	# CONFIGURATION OPTION: -plotbackground
1684	# ----------------------------------------------------------------------
1685	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1686	if { [isconnected] } {
1687	set rgb [Color2RGB $itk_option(-plotbackground)]
1688	SendCmd "screen bgcolor $rgb"
1689	}
1690	}
1691
1692	# ----------------------------------------------------------------------
1693	# CONFIGURATION OPTION: -plotforeground
1694	# ----------------------------------------------------------------------
1695	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1696	if { [isconnected] } {
1697	set rgb [Color2RGB $itk_option(-plotforeground)]
1698	SendCmd "axis color all $rgb"
1699	SendCmd "outline color $rgb"
1700	SendCmd "cutplane color $rgb"
1701	}
1702	}
1703
1704	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1705
1706	set fg [option get $itk_component(hull) font Font]
1707	#set bfg [option get $itk_component(hull) boldFont Font]
1708
1709	set inner [$itk_component(main) insert end \
1710	-title "Isosurface Settings" \
1711	-icon [Rappture::icon volume-on]]
1712	$inner configure -borderwidth 4
1713
1714	checkbutton $inner.contour \
1715	-text "Isosurfaces" \
1716	-variable [itcl::scope _settings(-isosurfacevisible)] \
1717	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
1718	-font "Arial 9"
1719
1720	checkbutton $inner.wireframe \
1721	-text "Wireframe" \
1722	-variable [itcl::scope _settings(-isosurfacewireframe)] \
1723	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
1724	-font "Arial 9"
1725
1726	checkbutton $inner.lighting \
1727	-text "Enable Lighting" \
1728	-variable [itcl::scope _settings(-isosurfacelighting)] \
1729	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
1730	-font "Arial 9"
1731
1732	checkbutton $inner.edges \
1733	-text "Edges" \
1734	-variable [itcl::scope _settings(-isosurfaceedges)] \
1735	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
1736	-font "Arial 9"
1737
1738	checkbutton $inner.outline \
1739	-text "Outline" \
1740	-variable [itcl::scope _settings(-outline)] \
1741	-command [itcl::code $this AdjustSetting -outline] \
1742	-font "Arial 9"
1743
1744	checkbutton $inner.legend \
1745	-text "Legend" \
1746	-variable [itcl::scope _settings(-legendvisible)] \
1747	-command [itcl::code $this AdjustSetting -legendvisible] \
1748	-font "Arial 9"
1749
1750	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1751	itk_component add isolineColor {
1752	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1753	}
1754	$inner.linecolor choices insert end \
1755	"black" "black" \
1756	"blue" "blue" \
1757	"cyan" "cyan" \
1758	"green" "green" \
1759	"grey" "grey" \
1760	"magenta" "magenta" \
1761	"orange" "orange" \
1762	"red" "red" \
1763	"white" "white" \
1764	"none" "none"
1765
1766	$itk_component(isolineColor) value "white"
1767	bind $inner.linecolor <<Value>> \
1768	[itcl::code $this AdjustSetting -isolinecolor]
1769
1770	label $inner.background_l -text "Background" -font "Arial 9"
1771	itk_component add background {
1772	Rappture::Combobox $inner.background -width 10 -editable 0
1773	}
1774	$inner.background choices insert end \
1775	"black" "black" \
1776	"white" "white" \
1777	"grey" "grey"
1778
1779	$itk_component(background) value $_settings(-background)
1780	bind $inner.background <<Value>> \
1781	[itcl::code $this AdjustSetting -background]
1782
1783	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1784	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1785	-variable [itcl::scope _widget(-isosurfaceopacity)] \
1786	-width 10 \
1787	-showvalue off \
1788	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
1789	$inner.opacity set [expr $_settings(-isosurfaceopacity) * 100.0]
1790
1791	itk_component add field_l {
1792	label $inner.field_l -text "Field" -font "Arial 9"
1793	} {
1794	ignore -font
1795	}
1796	itk_component add field {
1797	Rappture::Combobox $inner.field -width 10 -editable 0
1798	}
1799	bind $inner.field <<Value>> \
1800	[itcl::code $this AdjustSetting -field]
1801
1802	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1803	itk_component add colormap {
1804	Rappture::Combobox $inner.colormap -width 10 -editable 0
1805	}
1806	$inner.colormap choices insert end [GetColormapList]
1807
1808	$itk_component(colormap) value "BCGYR"
1809	bind $inner.colormap <<Value>> \
1810	[itcl::code $this AdjustSetting -colormap]
1811
1812	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1813	itk_component add numcontours {
1814	Rappture::Spinint $inner.numcontours \
1815	-min 0 -max 50 -font "arial 9"
1816	}
1817	$itk_component(numcontours) value $_settings(-numcontours)
1818	bind $itk_component(numcontours) <<Value>> \
1819	[itcl::code $this AdjustSetting -numcontours]
1820
1821
1822	# add widgets for setting a custom range on the legend
1823
1824	itk_component add crange {
1825	checkbutton $inner.crange \
1826	-text "Use Custom Range:" \
1827	-variable [itcl::scope _settings(-customrange)] \
1828	-command [itcl::code $this ToggleCustomRange] \
1829	-font "Arial 9"
1830	}
1831
1832	itk_component add l_min {
1833	label $inner.l_min -text "Min" -font "Arial 9"
1834	}
1835	itk_component add min {
1836	Rappture::Gauge $inner.min -font "Arial 9" \
1837	-validatecommand [itcl::code $this LegendRangeValidate "" vmin]
1838	}
1839	bind $itk_component(min) <<Value>> \
1840	[itcl::code $this AdjustSetting -range]
1841
1842	itk_component add l_max {
1843	label $inner.l_max -text "Max" -font "Arial 9"
1844	}
1845	itk_component add max {
1846	Rappture::Gauge $inner.max -font "Arial 9" \
1847	-validatecommand [itcl::code $this LegendRangeValidate "" vmax]
1848	}
1849	bind $itk_component(max) <<Value>> \
1850	[itcl::code $this AdjustSetting -range]
1851
1852	$itk_component(min) configure -state disabled
1853	$itk_component(max) configure -state disabled
1854
1855
1856	blt::table $inner \
1857	0,0 $inner.field_l -anchor w -pady 2 \
1858	0,1 $inner.field -anchor w -pady 2 -fill x \
1859	1,0 $inner.colormap_l -anchor w -pady 2 \
1860	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1861	2,0 $inner.linecolor_l -anchor w -pady 2 \
1862	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1863	3,0 $inner.background_l -anchor w -pady 2 \
1864	3,1 $inner.background -anchor w -pady 2 -fill x \
1865	4,0 $inner.numcontours_l -anchor w -pady 2 \
1866	4,1 $inner.numcontours -anchor w -pady 2 \
1867	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1868	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1869	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1870	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1871	9,0 $inner.legend -anchor w -pady 2 \
1872	10,0 $inner.opacity_l -anchor w -pady 2 \
1873	10,1 $inner.opacity -fill x -pady 2 -fill x \
1874	11,0 $inner.crange -anchor w -pady 2 -cspan 2 \
1875	12,0 $inner.l_min -anchor w -pady 2 \
1876	12,1 $inner.min -anchor w -pady 2 -fill x \
1877	13,0 $inner.l_max -anchor w -pady 2 \
1878	13,1 $inner.max -anchor w -pady 2 -fill x \
1879
1880	blt::table configure $inner r* c* -resize none
1881	blt::table configure $inner r14 c1 -resize expand
1882	}
1883
1884	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1885
1886	set fg [option get $itk_component(hull) font Font]
1887	#set bfg [option get $itk_component(hull) boldFont Font]
1888
1889	set inner [$itk_component(main) insert end \
1890	-title "Axis Settings" \
1891	-icon [Rappture::icon axis2]]
1892	$inner configure -borderwidth 4
1893
1894	checkbutton $inner.visible \
1895	-text "Axes" \
1896	-variable [itcl::scope _settings(-axesvisible)] \
1897	-command [itcl::code $this AdjustSetting -axesvisible] \
1898	-font "Arial 9"
1899
1900	checkbutton $inner.labels \
1901	-text "Axis Labels" \
1902	-variable [itcl::scope _settings(-axislabels)] \
1903	-command [itcl::code $this AdjustSetting -axislabels] \
1904	-font "Arial 9"
1905	label $inner.grid_l -text "Grid" -font "Arial 9"
1906	checkbutton $inner.xgrid \
1907	-text "X" \
1908	-variable [itcl::scope _settings(-xgrid)] \
1909	-command [itcl::code $this AdjustSetting -xgrid] \
1910	-font "Arial 9"
1911	checkbutton $inner.ygrid \
1912	-text "Y" \
1913	-variable [itcl::scope _settings(-ygrid)] \
1914	-command [itcl::code $this AdjustSetting -ygrid] \
1915	-font "Arial 9"
1916	checkbutton $inner.zgrid \
1917	-text "Z" \
1918	-variable [itcl::scope _settings(-zgrid)] \
1919	-command [itcl::code $this AdjustSetting -zgrid] \
1920	-font "Arial 9"
1921	checkbutton $inner.minorticks \
1922	-text "Minor Ticks" \
1923	-variable [itcl::scope _settings(-axisminorticks)] \
1924	-command [itcl::code $this AdjustSetting -axisminorticks] \
1925	-font "Arial 9"
1926
1927	label $inner.mode_l -text "Mode" -font "Arial 9"
1928
1929	itk_component add axisMode {
1930	Rappture::Combobox $inner.mode -width 10 -editable 0
1931	}
1932	$inner.mode choices insert end \
1933	"static_triad" "static" \
1934	"closest_triad" "closest" \
1935	"furthest_triad" "farthest" \
1936	"outer_edges" "outer"
1937	$itk_component(axisMode) value $_settings(-axismode)
1938	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1939
1940	blt::table $inner \
1941	0,0 $inner.visible -anchor w -cspan 4 \
1942	1,0 $inner.labels -anchor w -cspan 4 \
1943	2,0 $inner.minorticks -anchor w -cspan 4 \
1944	4,0 $inner.grid_l -anchor w \
1945	4,1 $inner.xgrid -anchor w \
1946	4,2 $inner.ygrid -anchor w \
1947	4,3 $inner.zgrid -anchor w \
1948	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1949	5,1 $inner.mode -fill x -cspan 3
1950
1951	blt::table configure $inner r* c* -resize none
1952	blt::table configure $inner r7 c6 -resize expand
1953	blt::table configure $inner r3 -height 0.125i
1954	}
1955
1956
1957	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1958	set inner [$itk_component(main) insert end \
1959	-title "Camera Settings" \
1960	-icon [Rappture::icon camera]]
1961	$inner configure -borderwidth 4
1962
1963	label $inner.view_l -text "view" -font "Arial 9"
1964	set f [frame $inner.view]
1965	foreach side { front back left right top bottom } {
1966	button $f.$side -image [Rappture::icon view$side] \
1967	-command [itcl::code $this SetOrientation $side]
1968	Rappture::Tooltip::for $f.$side "Change the view to $side"
1969	pack $f.$side -side left
1970	}
1971
1972	blt::table $inner \
1973	0,0 $inner.view_l -anchor e -pady 2 \
1974	0,1 $inner.view -anchor w -pady 2
1975	blt::table configure $inner r0 -resize none
1976
1977	set labels { qx qy qz qw xpan ypan zoom }
1978	set row 1
1979	foreach tag $labels {
1980	label $inner.${tag}label -text $tag -font "Arial 9"
1981	entry $inner.${tag} -font "Arial 9" -bg white \
1982	-textvariable [itcl::scope _view(-$tag)]
1983	bind $inner.${tag} <Return> \
1984	[itcl::code $this camera set -${tag}]
1985	bind $inner.${tag} <KP_Enter> \
1986	[itcl::code $this camera set -${tag}]
1987	blt::table $inner \
1988	$row,0 $inner.${tag}label -anchor e -pady 2 \
1989	$row,1 $inner.${tag} -anchor w -pady 2
1990	blt::table configure $inner r$row -resize none
1991	incr row
1992	}
1993	checkbutton $inner.ortho \
1994	-text "Orthographic Projection" \
1995	-variable [itcl::scope _view(-ortho)] \
1996	-command [itcl::code $this AdjustSetting -ortho] \
1997	-font "Arial 9"
1998	blt::table $inner \
1999	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2000	blt::table configure $inner r$row -resize none
2001	incr row
2002
2003	blt::table configure $inner c* -resize none
2004	blt::table configure $inner c2 -resize expand
2005	blt::table configure $inner r$row -resize expand
2006	}
2007
2008	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
2009
2010	set fg [option get $itk_component(hull) font Font]
2011
2012	set inner [$itk_component(main) insert end \
2013	-title "Cutplane Settings" \
2014	-icon [Rappture::icon cutbutton]]
2015
2016	$inner configure -borderwidth 4
2017
2018	checkbutton $inner.visible \
2019	-text "Cutplanes" \
2020	-variable [itcl::scope _settings(-cutplanesvisible)] \
2021	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
2022	-font "Arial 9"
2023
2024	checkbutton $inner.wireframe \
2025	-text "Wireframe" \
2026	-variable [itcl::scope _settings(-cutplanewireframe)] \
2027	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
2028	-font "Arial 9"
2029
2030	checkbutton $inner.lighting \
2031	-text "Enable Lighting" \
2032	-variable [itcl::scope _settings(-cutplanelighting)] \
2033	-command [itcl::code $this AdjustSetting -cutplanelighting] \
2034	-font "Arial 9"
2035
2036	checkbutton $inner.edges \
2037	-text "Edges" \
2038	-variable [itcl::scope _settings(-cutplaneedges)] \
2039	-command [itcl::code $this AdjustSetting -cutplaneedges] \
2040	-font "Arial 9"
2041
2042	checkbutton $inner.preinterp \
2043	-text "Interpolate Scalars" \
2044	-variable [itcl::scope _settings(-cutplanepreinterp)] \
2045	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
2046	-font "Arial 9"
2047
2048	label $inner.opacity_l -text "Opacity" -font "Arial 9"
2049	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2050	-variable [itcl::scope _widget(-cutplaneopacity)] \
2051	-width 10 \
2052	-showvalue off \
2053	-command [itcl::code $this AdjustSetting -cutplaneopacity]
2054	$inner.opacity set [expr $_settings(-cutplaneopacity) * 100.0]
2055
2056	# X-value slicer...
2057	itk_component add xbutton {
2058	Rappture::PushButton $inner.xbutton \
2059	-onimage [Rappture::icon x-cutplane-red] \
2060	-offimage [Rappture::icon x-cutplane-red] \
2061	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
2062	-variable [itcl::scope _settings(-xcutplanevisible)] \
2063	}
2064	Rappture::Tooltip::for $itk_component(xbutton) \
2065	"Toggle the X-axis cutplane on/off"
2066	$itk_component(xbutton) select
2067	itk_component add xposition {
2068	::scale $inner.xval -from 100 -to 0 \
2069	-width 10 -orient vertical -showvalue 1 \
2070	-borderwidth 1 -highlightthickness 0 \
2071	-command [itcl::code $this EventuallySetCutplane x] \
2072	-variable [itcl::scope _settings(-xcutplaneposition)] \
2073	-foreground red2 -font "Arial 9 bold"
2074	} {
2075	usual
2076	ignore -borderwidth -highlightthickness -foreground -font -background
2077	}
2078	# Set the default cutplane value before disabling the scale.
2079	$itk_component(xposition) set 50
2080	$itk_component(xposition) configure -state disabled
2081	Rappture::Tooltip::for $itk_component(xposition) \
2082	"@[itcl::code $this Slice tooltip x]"
2083
2084	# Y-value slicer...
2085	itk_component add ybutton {
2086	Rappture::PushButton $inner.ybutton \
2087	-onimage [Rappture::icon y-cutplane-green] \
2088	-offimage [Rappture::icon y-cutplane-green] \
2089	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
2090	-variable [itcl::scope _settings(-ycutplanevisible)] \
2091	}
2092	Rappture::Tooltip::for $itk_component(ybutton) \
2093	"Toggle the Y-axis cutplane on/off"
2094	$itk_component(ybutton) select
2095
2096	itk_component add yposition {
2097	::scale $inner.yval -from 100 -to 0 \
2098	-width 10 -orient vertical -showvalue 1 \
2099	-borderwidth 1 -highlightthickness 0 \
2100	-command [itcl::code $this EventuallySetCutplane y] \
2101	-variable [itcl::scope _settings(-ycutplaneposition)] \
2102	-foreground green3 -font "Arial 9 bold"
2103	} {
2104	usual
2105	ignore -borderwidth -highlightthickness -foreground -font
2106	}
2107	Rappture::Tooltip::for $itk_component(yposition) \
2108	"@[itcl::code $this Slice tooltip y]"
2109	# Set the default cutplane value before disabling the scale.
2110	$itk_component(yposition) set 50
2111	$itk_component(yposition) configure -state disabled
2112
2113	# Z-value slicer...
2114	itk_component add zbutton {
2115	Rappture::PushButton $inner.zbutton \
2116	-onimage [Rappture::icon z-cutplane-blue] \
2117	-offimage [Rappture::icon z-cutplane-blue] \
2118	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
2119	-variable [itcl::scope _settings(-zcutplanevisible)] \
2120	} {
2121	usual
2122	ignore -foreground
2123	}
2124	Rappture::Tooltip::for $itk_component(zbutton) \
2125	"Toggle the Z-axis cutplane on/off"
2126	$itk_component(zbutton) select
2127
2128	itk_component add zposition {
2129	::scale $inner.zval -from 100 -to 0 \
2130	-width 10 -orient vertical -showvalue 1 \
2131	-borderwidth 1 -highlightthickness 0 \
2132	-command [itcl::code $this EventuallySetCutplane z] \
2133	-variable [itcl::scope _settings(-zcutplaneposition)] \
2134	-foreground blue3 -font "Arial 9 bold"
2135	} {
2136	usual
2137	ignore -borderwidth -highlightthickness -foreground -font
2138	}
2139	$itk_component(zposition) set 50
2140	$itk_component(zposition) configure -state disabled
2141	Rappture::Tooltip::for $itk_component(zposition) \
2142	"@[itcl::code $this Slice tooltip z]"
2143
2144	blt::table $inner \
2145	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
2146	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
2147	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
2148	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
2149	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
2150	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2151	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2152	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
2153	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
2154	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
2155	6,1 $inner.xval -fill y -rspan 4 \
2156	6,2 $inner.yval -fill y -rspan 4 \
2157	6,3 $inner.zval -fill y -rspan 4 \
2158
2159
2160	blt::table configure $inner r* c* -resize none
2161	blt::table configure $inner r9 c4 -resize expand
2162	}
2163
2164	#
2165	# camera --
2166	#
2167	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2168	switch -- $option {
2169	"show" {
2170	puts [array get _view]
2171	}
2172	"set" {
2173	set what [lindex $args 0]
2174	set x $_view($what)
2175	set code [catch { string is double $x } result]
2176	if { $code != 0 \|\| !$result } {
2177	return
2178	}
2179	switch -- $what {
2180	"-ortho" {
2181	if {$_view($what)} {
2182	SendCmd "camera mode ortho"
2183	} else {
2184	SendCmd "camera mode persp"
2185	}
2186	}
2187	"-xpan" - "-ypan" {
2188	PanCamera
2189	}
2190	"-qx" - "-qy" - "-qz" - "-qw" {
2191	set q [ViewToQuaternion]
2192	$_arcball quaternion $q
2193	EventuallyRotate $q
2194	}
2195	"-zoom" {
2196	SendCmd "camera zoom $_view($what)"
2197	}
2198	}
2199	}
2200	}
2201	}
2202
2203	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2204	set bytes ""
2205	foreach dataobj [get] {
2206	foreach cname [$dataobj components] {
2207	set tag $dataobj-$cname
2208	set contents [$dataobj vtkdata $cname]
2209	append bytes "$contents\n"
2210	}
2211	}
2212	return [list .vtk $bytes]
2213	}
2214
2215	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2216	if { [image width $_image(download)] > 0 &&
2217	[image height $_image(download)] > 0 } {
2218	set bytes [$_image(download) data -format "jpeg -quality 100"]
2219	set bytes [Rappture::encoding::decode -as b64 $bytes]
2220	return [list .jpg $bytes]
2221	}
2222	return ""
2223	}
2224
2225	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2226	Rappture::Balloon $popup \
2227	-title "[Rappture::filexfer::label downloadWord] as..."
2228	set inner [$popup component inner]
2229	label $inner.summary -text "" -anchor w
2230	radiobutton $inner.vtk_button -text "VTK data file" \
2231	-variable [itcl::scope _downloadPopup(format)] \
2232	-font "Arial 9 " \
2233	-value vtk
2234	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2235	radiobutton $inner.image_button -text "Image File" \
2236	-variable [itcl::scope _downloadPopup(format)] \
2237	-font "Arial 9 " \
2238	-value image
2239	Rappture::Tooltip::for $inner.image_button \
2240	"Save as digital image."
2241
2242	button $inner.ok -text "Save" \
2243	-highlightthickness 0 -pady 2 -padx 3 \
2244	-command $command \
2245	-compound left \
2246	-image [Rappture::icon download]
2247
2248	button $inner.cancel -text "Cancel" \
2249	-highlightthickness 0 -pady 2 -padx 3 \
2250	-command [list $popup deactivate] \
2251	-compound left \
2252	-image [Rappture::icon cancel]
2253
2254	blt::table $inner \
2255	0,0 $inner.summary -cspan 2 \
2256	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2257	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2258	4,1 $inner.cancel -width .9i -fill y \
2259	4,0 $inner.ok -padx 2 -width .9i -fill y
2260	blt::table configure $inner r3 -height 4
2261	blt::table configure $inner r4 -pady 4
2262	raise $inner.image_button
2263	$inner.vtk_button invoke
2264	return $inner
2265	}
2266
2267	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2268	# Parse style string.
2269	set tag $dataobj-$comp
2270	array set style {
2271	-color BCGYR
2272	-cutplaneedges 0
2273	-cutplanelighting 1
2274	-cutplaneopacity 1.0
2275	-cutplanepreinterp 1
2276	-cutplanesvisible 0
2277	-cutplanewireframe 0
2278	-edgecolor black
2279	-edges 0
2280	-isosurfacevisible 1
2281	-levels 10
2282	-lighting 1
2283	-linewidth 1.0
2284	-opacity 0.6
2285	-outline 0
2286	-wireframe 0
2287	-xcutplaneposition 50
2288	-xcutplanevisible 1
2289	-ycutplaneposition 50
2290	-ycutplanevisible 1
2291	-zcutplaneposition 50
2292	-zcutplanevisible 1
2293	}
2294	array set style [$dataobj style $comp]
2295	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2296	set style(-opacity) 1.0
2297	}
2298
2299	# This is too complicated. We want to set the colormap, number of
2300	# isolines and opacity for the dataset. They can be the default values,
2301	# the style hints loaded with the dataset, or set by user controls. As
2302	# datasets get loaded, they first use the defaults that are overidden
2303	# by the style hints. If the user changes the global controls, then that
2304	# overrides everything else. I don't know what it means when global
2305	# controls are specified as style hints by each dataset. It complicates
2306	# the code to handle aberrant cases.
2307
2308	if { $_changed(-isosurfaceedges) } {
2309	set style(-edges) $_settings(-isosurfaceedges)
2310	}
2311	if { $_changed(-isosurfacelighting) } {
2312	set style(-lighting) $_settings(-isosurfacelighting)
2313	}
2314	if { $_changed(-isosurfaceopacity) } {
2315	set style(-opacity) $_settings(-isosurfaceopacity)
2316	}
2317	if { $_changed(-isosurfacewireframe) } {
2318	set style(-wireframe) $_settings(-isosurfacewireframe)
2319	}
2320	if { $_changed(-numcontours) } {
2321	set style(-levels) $_settings(-numcontours)
2322	}
2323	if { $_changed(-colormap) } {
2324	set style(-color) $_settings(-colormap)
2325	}
2326	if { $_currentColormap == "" } {
2327	SetCurrentColormap $style(-color)
2328	$itk_component(colormap) value $style(-color)
2329	}
2330	if { $_contourList(numLevels) != $style(-levels) } {
2331	if { [llength $style(-levels)] > 1 } {
2332	set _contourList(reqValues) [lsort -real $style(-levels)]
2333	} else {
2334	set _settings(-numcontours) $style(-levels)
2335	$itk_component(numcontours) value $style(-levels)
2336	set _contourList(numLevels) $style(-levels)
2337	}
2338	EventuallyChangeContourLevels
2339	}
2340	foreach setting {-outline -isosurfacevisible -cutplanesvisible \
2341	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
2342	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
2343	-cutplaneedges -cutplanelighting -cutplaneopacity \
2344	-cutplanepreinterp -cutplanewireframe} {
2345	if {$_changed($setting)} {
2346	# User-modified UI setting overrides style
2347	set style($setting) $_settings($setting)
2348	} else {
2349	# Set UI control to style setting (tool provided or default)
2350	set _settings($setting) $style($setting)
2351	}
2352	}
2353
2354	SendCmd "cutplane add $tag"
2355	SendCmd "cutplane color [Color2RGB $itk_option(-plotforeground)] $tag"
2356	foreach axis {x y z} {
2357	set pos [expr $style(-${axis}cutplaneposition) * 0.01]
2358	set visible $style(-${axis}cutplanevisible)
2359	SendCmd "cutplane slice $axis $pos $tag"
2360	SendCmd "cutplane axis $axis $visible $tag"
2361	}
2362	SendCmd "cutplane edges $style(-cutplaneedges) $tag"
2363	SendCmd "cutplane lighting $style(-cutplanelighting) $tag"
2364	SendCmd "cutplane opacity $style(-cutplaneopacity) $tag"
2365	SendCmd "cutplane preinterp $style(-cutplanepreinterp) $tag"
2366	SendCmd "cutplane wireframe $style(-cutplanewireframe) $tag"
2367	SendCmd "cutplane visible $style(-cutplanesvisible) $tag"
2368
2369	SendCmd "outline add $tag"
2370	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2371	SendCmd "outline visible $style(-outline) $tag"
2372
2373	GenerateContourList
2374	SendCmd [list contour3d add contourlist $_contourList(values) $tag]
2375	SendCmd "contour3d visible $style(-isosurfacevisible) $tag"
2376	SendCmd "contour3d edges $style(-edges) $tag"
2377	set _settings(-isosurfaceedges) $style(-edges)
2378	#SendCmd "contour3d color [Color2RGB $style(-color)] $tag"
2379	SendCmd "contour3d lighting $style(-lighting) $tag"
2380	set _settings(-isosurfacelighting) $style(-lighting)
2381	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2382	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2383	SendCmd "contour3d opacity $style(-opacity) $tag"
2384	set _settings(-isosurfaceopacity) $style(-opacity)
2385	SetCurrentColormap $style(-color)
2386	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2387	set _settings(-isosurfacewireframe) $style(-wireframe)
2388	}
2389
2390	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2391	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2392	return 0
2393	}
2394	return 1
2395	}
2396
2397	#
2398	# EnterLegend --
2399	#
2400	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2401	SetLegendTip $x $y
2402	}
2403
2404	#
2405	# MotionLegend --
2406	#
2407	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2408	Rappture::Tooltip::tooltip cancel
2409	set c $itk_component(view)
2410	set cw [winfo width $c]
2411	set ch [winfo height $c]
2412	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2413	SetLegendTip $x $y
2414	}
2415	}
2416
2417	#
2418	# LeaveLegend --
2419	#
2420	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2421	Rappture::Tooltip::tooltip cancel
2422	.rappturetooltip configure -icon ""
2423	}
2424
2425	# ----------------------------------------------------------------------
2426	# USAGE: LegendB1Motion press <x> <y>
2427	# USAGE: LegendB1Motion motion <x> <y>
2428	# USAGE: LegendB1Motion release <x> <y>
2429	#
2430	# Manage actions for Button 1 presses that happen over the legend.
2431	# Pressing mouse Button 1 on the legend sends a command to the
2432	# visualization server to show a specific isosurface.
2433	# ----------------------------------------------------------------------
2434	itcl::body Rappture::VtkIsosurfaceViewer::LegendB1Motion { status x y } {
2435
2436	switch -- $status {
2437	"press" {
2438	DisableMouseRotationBindings
2439	LegendProbeSingleContour $x $y
2440	}
2441	"motion" {
2442	DisableMouseRotationBindings
2443	LegendProbeSingleContour $x $y
2444	}
2445	"release" {
2446	AdjustSetting -range
2447	SetupMouseRotationBindings
2448	}
2449	default {
2450	error "bad option \"$option\": should be one of press, motion, release."
2451	}
2452	}
2453	}
2454
2455	# ----------------------------------------------------------------------
2456	# USAGE: LegendPointToValue <x> <y>
2457	#
2458	# Convert an x,y point on the legend to a numeric isosurface value.
2459	# ----------------------------------------------------------------------
2460	itcl::body Rappture::VtkIsosurfaceViewer::LegendPointToValue { x y } {
2461
2462	set fname $_curFldName
2463
2464	set font "Arial 8"
2465	set lineht [font metrics $font -linespace]
2466
2467	set ih [image height $_image(legend)]
2468	set iy [expr $y - ($lineht + 2)]
2469
2470	# Compute the value of the point
2471	if { [info exists _limits($fname)] } {
2472	if { $_settings(-customrange) } {
2473	set vmin [$itk_component(min) value]
2474	set vmax [$itk_component(max) value]
2475	} else {
2476	foreach { vmin vmax } $_limits($fname) break
2477	}
2478	set t [expr 1.0 - (double($iy) / double($ih-1))]
2479	set value [expr $t * ($vmax - $vmin) + $vmin]
2480	} else {
2481	set value 0.0
2482	}
2483	return $value
2484	}
2485
2486	# ----------------------------------------------------------------------
2487	# USAGE: LegendProbeSingleContour <x> <y>
2488	#
2489	# Calculate the isosurface value for the x,y point and send a commands
2490	# to the visualization server to show that isosurface.
2491	# ----------------------------------------------------------------------
2492	itcl::body Rappture::VtkIsosurfaceViewer::LegendProbeSingleContour { x y } {
2493
2494	set value [LegendPointToValue $x $y]
2495	SendCmd [list contour3d contourlist $value]
2496	}
2497
2498	#
2499	# SetLegendTip --
2500	#
2501	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2502	set fname $_curFldName
2503	set c $itk_component(view)
2504	set w [winfo width $c]
2505	set h [winfo height $c]
2506
2507	set font "Arial 8"
2508	set lineht [font metrics $font -linespace]
2509
2510	set ih [image height $_image(legend)]
2511	set iy [expr $y - ($lineht + 2)]
2512
2513	if { [string match "component*" $fname] } {
2514	set title ""
2515	} else {
2516	if { [info exists _fields($fname)] } {
2517	foreach { title units } $_fields($fname) break
2518	if { $units != "" } {
2519	set title [format "%s (%s)" $title $units]
2520	}
2521	} else {
2522	set title $fname
2523	}
2524	}
2525	# If there's a legend title, increase the offset by the line height.
2526	if { $title != "" } {
2527	incr iy -$lineht
2528	}
2529	# Make a swatch of the selected color
2530	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2531	return
2532	}
2533	if { ![info exists _image(swatch)] } {
2534	set _image(swatch) [image create photo -width 24 -height 24]
2535	}
2536	set color [eval format "\#%02x%02x%02x" $pixel]
2537	$_image(swatch) put black -to 0 0 23 23
2538	$_image(swatch) put $color -to 1 1 22 22
2539	.rappturetooltip configure -icon $_image(swatch)
2540
2541	# Compute the value of the point
2542	set value [LegendPointToValue $x $y]
2543
2544	# Setup the location of the tooltip
2545	set tx [expr $x + 15]
2546	set ty [expr $y - 5]
2547
2548	# Setup the text for the tooltip
2549	if { [info exists _isolines($y)] } {
2550	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2551	} else {
2552	Rappture::Tooltip::text $c [format "$title %g" $value]
2553	}
2554
2555	# Show the tooltip
2556	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2557	}
2558
2559	# ----------------------------------------------------------------------
2560	# USAGE: Slice move x\|y\|z <newval>
2561	#
2562	# Called automatically when the user drags the slider to move the
2563	# cut plane that slices 3D data. Gets the current value from the
2564	# slider and moves the cut plane to the appropriate point in the
2565	# data set.
2566	# ----------------------------------------------------------------------
2567	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2568	switch -- $option {
2569	"move" {
2570	set axis [lindex $args 0]
2571	set newval [lindex $args 1]
2572	if {[llength $args] != 2} {
2573	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2574	}
2575	set newpos [expr {0.01*$newval}]
2576	SendCmd "cutplane slice $axis $newpos"
2577	}
2578	"tooltip" {
2579	set axis [lindex $args 0]
2580	set val [$itk_component(${axis}position) get]
2581	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2582	}
2583	default {
2584	error "bad option \"$option\": should be axis, move, or tooltip"
2585	}
2586	}
2587	}
2588
2589	#
2590	# ReceiveLegend --
2591	#
2592	# Invoked automatically whenever the "legend" command comes in from
2593	# the rendering server. Indicates that binary image data with the
2594	# specified <size> will follow.
2595	#
2596	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2597	# puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2598	set _title $title
2599	regsub {\(mag\)} $title "" _title
2600	if { [IsConnected] } {
2601	set bytes [ReceiveBytes $size]
2602	if { ![info exists _image(legend)] } {
2603	set _image(legend) [image create photo]
2604	}
2605	$_image(legend) configure -data $bytes
2606	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2607	if { [catch {DrawLegend} errs] != 0 } {
2608	global errorInfo
2609	puts stderr "errs=$errs errorInfo=$errorInfo"
2610	}
2611	}
2612	}
2613
2614	#
2615	# DrawLegend --
2616	#
2617	# Draws the legend on the canvas on the right side of the plot area.
2618	#
2619	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2620	set fname $_curFldName
2621	set c $itk_component(view)
2622	set w [winfo width $c]
2623	set h [winfo height $c]
2624	set font "Arial 8"
2625	set lineht [font metrics $font -linespace]
2626
2627	if { [string match "component*" $fname] } {
2628	set title ""
2629	} else {
2630	if { [info exists _fields($fname)] } {
2631	foreach { title units } $_fields($fname) break
2632	if { $units != "" } {
2633	set title [format "%s (%s)" $title $units]
2634	}
2635	} else {
2636	set title $fname
2637	}
2638	}
2639	set x [expr $w - 2]
2640	if { !$_settings(-legendvisible) } {
2641	$c delete legend
2642	return
2643	}
2644	if { [$c find withtag "legend"] == "" } {
2645	set y 2
2646	# If there's a legend title, create a text item for the title.
2647	$c create text $x $y \
2648	-anchor ne \
2649	-fill $itk_option(-plotforeground) -tags "title legend" \
2650	-font $font
2651	if { $title != "" } {
2652	incr y $lineht
2653	}
2654	$c create text $x $y \
2655	-anchor ne \
2656	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2657	-font $font
2658	incr y $lineht
2659	$c create image $x $y \
2660	-anchor ne \
2661	-image $_image(legend) -tags "colormap legend"
2662	$c create rectangle $x $y 1 1 \
2663	-fill "" -outline "" -tags "sensor legend"
2664	$c create text $x [expr {$h-2}] \
2665	-anchor se \
2666	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2667	-font $font
2668	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2669	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2670	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2671	# $c bind sensor <ButtonPress-1> [itcl::code $this LegendB1Motion press %x %y]
2672	# $c bind sensor <B1-Motion> [itcl::code $this LegendB1Motion motion %x %y]
2673	# $c bind sensor <ButtonRelease-1> [itcl::code $this LegendB1Motion release %x %y]
2674
2675	}
2676	$c delete isoline
2677	set x2 $x
2678	set iw [image width $_image(legend)]
2679	set ih [image height $_image(legend)]
2680	set x1 [expr $x2 - ($iw*12)/10]
2681	set color $_settings(-isolinecolor)
2682	# Draw the isolines on the legend.
2683	array unset _isolines
2684	if { $color != "none" && [info exists _limits($_curFldName)] &&
2685	$_settings(-numcontours) > 0 } {
2686
2687	if { $_settings(-customrange) } {
2688	set vmin [$itk_component(min) value]
2689	set vmax [$itk_component(max) value]
2690	} else {
2691	foreach { vmin vmax } $_limits($_curFldName) break
2692	}
2693	set range [expr double($vmax - $vmin)]
2694	if { $range <= 0.0 } {
2695	set range 1.0; # Min is greater or equal to max.
2696	}
2697	set tags "isoline legend"
2698	set offset [expr 2 + $lineht]
2699	if { $title != "" } {
2700	incr offset $lineht
2701	}
2702	foreach value $_contourList(values) {
2703	set norm [expr 1.0 - (($value - $vmin) / $range)]
2704	set y1 [expr int(round(($norm * $ih) + $offset))]
2705	for { set off 0 } { $off < 3 } { incr off } {
2706	set _isolines([expr $y1 + $off]) $value
2707	set _isolines([expr $y1 - $off]) $value
2708	}
2709	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2710	}
2711	}
2712
2713	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2714	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2715	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2716	# Reset the item coordinates according the current size of the plot.
2717	$c itemconfigure title -text $title
2718	if { [info exists _limits($_curFldName)] } {
2719	if { $_settings(-customrange) } {
2720	set vmin [$itk_component(min) value]
2721	set vmax [$itk_component(max) value]
2722	} else {
2723	foreach { vmin vmax } $_limits($_curFldName) break
2724	}
2725	$c itemconfigure vmin -text [format %g $vmin]
2726	$c itemconfigure vmax -text [format %g $vmax]
2727	}
2728	set y 2
2729	# If there's a legend title, move the title to the correct position
2730	if { $title != "" } {
2731	$c itemconfigure title -text $title
2732	$c coords title $x $y
2733	incr y $lineht
2734	$c raise title
2735	}
2736	$c coords vmax $x $y
2737	incr y $lineht
2738	$c coords colormap $x $y
2739	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2740	$c raise sensor
2741	$c coords vmin $x [expr {$h - 2}]
2742
2743	$c bind vmin <ButtonPress> [itcl::code $this LegendRangeAction popup vmin]
2744	$c bind vmin <Enter> [itcl::code $this LegendRangeAction enter vmin]
2745	$c bind vmin <Leave> [itcl::code $this LegendRangeAction leave vmin]
2746
2747	$c bind vmax <ButtonPress> [itcl::code $this LegendRangeAction popup vmax]
2748	$c bind vmax <Enter> [itcl::code $this LegendRangeAction enter vmax]
2749	$c bind vmax <Leave> [itcl::code $this LegendRangeAction leave vmax]
2750	}
2751
2752	# ----------------------------------------------------------------------
2753	# USAGE: LegendTitleAction post
2754	# USAGE: LegendTitleAction enter
2755	# USAGE: LegendTitleAction leave
2756	# USAGE: LegendTitleAction save
2757	#
2758	# Used internally to handle the dropdown list for the fields menu combobox.
2759	# The post option is invoked when the field title is pressed to launch the
2760	# dropdown. The enter option is invoked when the user mouses over the field
2761	# title. The leave option is invoked when the user moves the mouse away
2762	# from the field title. The save option is invoked whenever there is a
2763	# selection from the list, to alert the visualization server.
2764	#
2765	# ----------------------------------------------------------------------
2766	itcl::body Rappture::VtkIsosurfaceViewer::LegendTitleAction {option} {
2767	set c $itk_component(view)
2768	switch -- $option {
2769	post {
2770	foreach { x1 y1 x2 y2 } [$c bbox title] break
2771	set cw [winfo width $itk_component(view)]
2772	set mw [winfo reqwidth $itk_component(fieldmenu)]
2773	set x1 [expr $cw - $mw]
2774	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2775	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2776	tk_popup $itk_component(fieldmenu) $x $y
2777	}
2778	enter {
2779	$c itemconfigure title -fill red
2780	}
2781	leave {
2782	$c itemconfigure title -fill $itk_option(-plotforeground)
2783	}
2784	save {
2785	$itk_component(field) value $_curFldLabel
2786	AdjustSetting -field
2787	}
2788	default {
2789	error "bad option \"$option\": should be post, enter, leave, save"
2790	}
2791	}
2792	}
2793
2794	# ----------------------------------------------------------------------
2795	# USAGE: LegendRangeValidate <widget> <which> <value>
2796	#
2797	# Used internally to validate a legend range min/max value.
2798	# Returns a boolean value telling if <value> was accepted (1) or rejected (0)
2799	# If the value is rejected, a tooltip/warning message is popped up
2800	# near the widget that asked for the validation, specified by <widget>
2801	#
2802	# <widget> is the widget where a tooltip/warning message should show up on
2803	# <which> is either "vmin" or "vmax".
2804	# <value> is the value to be validated.
2805	#
2806	# ----------------------------------------------------------------------
2807	itcl::body Rappture::VtkIsosurfaceViewer::LegendRangeValidate {widget which value} {
2808
2809	#check for a valid value
2810	if {[string is double $value] != 1} {
2811	set msg "should be valid number"
2812	if {$widget != ""} {
2813	Rappture::Tooltip::cue $widget $msg
2814	} else {
2815	# error "bad value \"$value\": $msg"
2816	error $msg
2817	}
2818	return 0
2819	}
2820
2821	switch -- $which {
2822	vmin {
2823	# check for min > max
2824	if {$value > [$itk_component(max) value]} {
2825	set msg "min > max, change max first"
2826	if {$widget != ""} {
2827	Rappture::Tooltip::cue $widget $msg
2828	} else {
2829	# error "bad value \"$value\": $msg"
2830	error $msg
2831	}
2832	return 0
2833	}
2834	}
2835	vmax {
2836	# check for max < min
2837	if {$value < [$itk_component(min) value]} {
2838	set msg "max < min, change min first"
2839	if {$widget != ""} {
2840	Rappture::Tooltip::cue $widget $msg
2841	} else {
2842	# error "bad value \"$value\": $msg"
2843	error $msg
2844	}
2845	return 0
2846	}
2847	}
2848	default {
2849	error "bad option \"$which\": should be vmin, vmax"
2850	}
2851	}
2852	}
2853
2854	itcl::body Rappture::VtkIsosurfaceViewer::MouseOver2Which {} {
2855	switch -- $_mouseOver {
2856	vmin {
2857	set which min
2858	}
2859	vmax {
2860	set which max
2861	}
2862	default {
2863	error "bad _mouseOver \"$_mouseOver\": should be vmin, vmax"
2864	}
2865	}
2866	return $which
2867	}
2868
2869	# ----------------------------------------------------------------------
2870	# USAGE: LegendRangeAction enter <which>
2871	# USAGE: LegendRangeAction leave <which>
2872	#
2873	# USAGE: LegendRangeAction popup <which>
2874	# USAGE: LegendRangeAction activate
2875	# USAGE: LegendRangeAction validate <value>
2876	# USAGE: LegendRangeAction apply <value>
2877	#
2878	# Used internally to handle the mouseover and popup entry for the field range
2879	# inputs. The enter option is invoked when the user moves the mouse over the
2880	# min or max field range. The leave option is invoked when the user moves the
2881	# mouse away from the min or max field range. The popup option is invoked when
2882	# the user click's on a field range. The popup option stores internally which
2883	# widget is requesting a popup ( in the _mouseOver variable) and calls the
2884	# activate command of the widget. The widget's activate command calls back to
2885	# this method to get the xywh dimensions of the popup editor. After the user
2886	# changes focus or sets the value in the editor, the editor calls this methods
2887	# validate and apply options to set the value.
2888	#
2889	# ----------------------------------------------------------------------
2890	itcl::body Rappture::VtkIsosurfaceViewer::LegendRangeAction {option args} {
2891	set c $itk_component(view)
2892
2893	switch -- $option {
2894	enter {
2895	set which [lindex $args 0]
2896	$c itemconfigure $which -fill red
2897	}
2898	leave {
2899	set which [lindex $args 0]
2900	$c itemconfigure $which -fill $itk_option(-plotforeground)
2901	}
2902	popup {
2903	DisableMouseRotationBindings
2904	set which [lindex $args 0]
2905	set _mouseOver $which
2906	$itk_component(editor) activate
2907	}
2908	activate {
2909	foreach { x1 y1 x2 y2 } [$c bbox $_mouseOver] break
2910	set which [MouseOver2Which]
2911	set info(text) [$itk_component($which) value]
2912	set info(x) [expr $x1 + [winfo rootx $c]]
2913	set info(y) [expr $y1 + [winfo rooty $c]]
2914	set info(w) [expr $x2 - $x1]
2915	set info(h) [expr $y2 - $y1]
2916	return [array get info]
2917	}
2918	validate {
2919	if {[llength $args] != 1} {
2920	error "wrong # args: should be \"editor validate value\""
2921	}
2922
2923	set value [lindex $args 0]
2924	if {[LegendRangeValidate $itk_component(editor) $_mouseOver $value] == 0} {
2925	return 0
2926	}
2927
2928	# value was good, apply it
2929	# reset the mouse rotation bindings
2930	SetupMouseRotationBindings
2931	}
2932	apply {
2933	if {[llength $args] != 1} {
2934	error "wrong # args: should be \"editor apply value\""
2935	}
2936	set value [string trim [lindex $args 0]]
2937
2938	set which [MouseOver2Which]
2939
2940	# only set custom range if value changed
2941	if {[$itk_component($which) value] != $value} {
2942	# set the flag stating the custom range came from the legend
2943	# change the value in the gauge
2944	# turn on crange to enable the labels and gauges
2945	# call AdjustSetting -range (inside ToggleCustomRange)
2946	# to update drawing and legend
2947	set _customRangeClick 0
2948	$itk_component($which) value $value
2949	$itk_component(crange) select
2950	ToggleCustomRange
2951	}
2952	}
2953	default {
2954	error "bad option \"$option\": should be enter, leave, activate, validate, apply"
2955	}
2956	}
2957	}
2958
2959	# ----------------------------------------------------------------------
2960	# USAGE: ToggleCustomRange
2961	#
2962	# Called whenever the custom range is turned on or off. Used to save
2963	# the custom min and custom max set by the user. When the -customrange
2964	# setting is turned on, the range min and range max gauges are set
2965	# with the last value set by the user, or the default range if no
2966	# previous min and max were set.
2967	#
2968	# When the custom range is turned on, we check how it was turned on
2969	# by querying _customRangeClick. If the variable is 1, this means
2970	# the user clicked the crange checkbutton and we should pull the
2971	# custom range values from our backup variables. If the variable is 0,
2972	# the custom range was enabled through the user manipulating the
2973	# min and max value in the legend.
2974	#
2975	# ----------------------------------------------------------------------
2976	itcl::body Rappture::VtkIsosurfaceViewer::ToggleCustomRange {args} {
2977	if { ! $_settings(-customrange) } {
2978	# custom range was turned off
2979
2980	# disable the min/max labels and gauge widgets
2981	$itk_component(l_min) configure -state disabled
2982	$itk_component(min) configure -state disabled
2983	$itk_component(l_max) configure -state disabled
2984	$itk_component(max) configure -state disabled
2985
2986	# backup the custom range
2987	set _settings(-customrangemin) [$itk_component(min) value]
2988	set _settings(-customrangemax) [$itk_component(max) value]
2989
2990	# set the gauges to dataset's min and max
2991	foreach { vmin vmax } $_limits($_curFldName) break
2992	SetMinMaxGauges $vmin $vmax
2993	} else {
2994	# custom range was turned on
2995
2996	# enable the min/max labels and gauge widgets
2997	$itk_component(l_min) configure -state normal
2998	$itk_component(min) configure -state normal
2999	$itk_component(l_max) configure -state normal
3000	$itk_component(max) configure -state normal
3001
3002	# if the custom range is being turned on by clicking the
3003	# checkbox, restore the min and max gauges from the backup
3004	# variables. otherwise, new values for the min and max
3005	# widgets will be set later from the legend's editor.
3006	if { $_customRangeClick } {
3007	SetMinMaxGauges $_settings(-customrangemin) $_settings(-customrangemax)
3008	}
3009
3010	# reset the click flag
3011	set _customRangeClick 1
3012	}
3013	AdjustSetting -range
3014	}
3015
3016	# ----------------------------------------------------------------------
3017	# USAGE: SetMinMaxGauges <min> <max>
3018	#
3019	# Set the min and max gauges in the correct order, avoiding the
3020	# error where you try to set the min > max before updating the max or
3021	# set the max < min before updating the min.
3022	#
3023	# There are five range cases to consider with our current range validation.
3024	# For example:
3025	# [2,3] -> [0,1] : update min first, max last
3026	# [2,3] -> [4,5] : update max first, min last
3027	# [2,3] -> [0,2.5] : update min or max first
3028	# [2,3] -> [2.5,5] : update min or max first
3029	# [2,3] -> [2.25,2.75] : update min or max first
3030	#
3031	# In 4 of the cases we can update min first and max last, so we only
3032	# need to check the case where old max < new min, where we update
3033	# max first and min last.
3034	# ----------------------------------------------------------------------
3035	itcl::body Rappture::VtkIsosurfaceViewer::SetMinMaxGauges {min max} {
3036
3037	if { [$itk_component(max) value] < $min} {
3038	# old max < new min
3039	# shift range toward right
3040	# extend max first, then update min
3041	$itk_component(max) value $max
3042	$itk_component(min) value $min
3043	} else {
3044	# extend min first, then update max
3045	$itk_component(min) value $min
3046	$itk_component(max) value $max
3047	}
3048	}
3049
3050	#
3051	# SetCurrentColormap --
3052	#
3053	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
3054	# Keep track of the colormaps that we build.
3055	if { ![info exists _colormaps($name)] } {
3056	BuildColormap $name
3057	set _colormaps($name) 1
3058	}
3059	set _currentColormap $name
3060	SendCmd "contour3d colormap $_currentColormap"
3061	SendCmd "cutplane colormap $_currentColormap"
3062	}
3063
3064	#
3065	# BuildColormap --
3066	#
3067	# Build the designated colormap on the server.
3068	#
3069	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
3070	set cmap [ColorsToColormap $name]
3071	if { [llength $cmap] == 0 } {
3072	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
3073	}
3074	set amap "0.0 1.0 1.0 1.0"
3075	SendCmd "colormap add $name { $cmap } { $amap }"
3076	}
3077
3078	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
3079	array set positions {
3080	front "1 0 0 0"
3081	back "0 0 1 0"
3082	left "0.707107 0 -0.707107 0"
3083	right "0.707107 0 0.707107 0"
3084	top "0.707107 -0.707107 0 0"
3085	bottom "0.707107 0.707107 0 0"
3086	}
3087	foreach name { -qw -qx -qy -qz } value $positions($side) {
3088	set _view($name) $value
3089	}
3090	set q [ViewToQuaternion]
3091	$_arcball quaternion $q
3092	SendCmd "camera orient $q"
3093	SendCmd "camera reset"
3094	set _view(-xpan) 0
3095	set _view(-ypan) 0
3096	set _view(-zoom) 1.0
3097	}
3098
3099	itcl::body Rappture::VtkIsosurfaceViewer::GenerateContourList {} {
3100	if { ![info exists _limits($_curFldName)] } {
3101	puts stderr "no _curFldName"
3102	return ""
3103	}
3104	if { $_contourList(numLevels) < 1 } {
3105	# There are tools that set 0 levels to get cutplanes only
3106	#puts stderr "numLevels < 1"
3107	return ""
3108	}
3109	if { [llength $_contourList(reqValues)] > 1 } {
3110	set values $_contourList(reqValues)
3111	} else {
3112	# if custom range has been set, use the custom min and max
3113	# to generate contour list values
3114	if { $_settings(-customrange) } {
3115	set vmin [$itk_component(min) value]
3116	set vmax [$itk_component(max) value]
3117	} else {
3118	# use the field limits to calculate the contour list values
3119	foreach { vmin vmax } $_limits($_curFldName) break
3120	}
3121
3122	set v [blt::vector create \#auto]
3123	$v seq $vmin $vmax [expr $_contourList(numLevels)+2]
3124	$v delete end 0
3125	set values [$v range 0 end]
3126	blt::vector destroy $v
3127	}
3128	set _contourList(values) $values
3129	}
3130
3131	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentFieldName { dataobj } {
3132	set _first $dataobj
3133	$itk_component(field) choices delete 0 end
3134	$itk_component(fieldmenu) delete 0 end
3135	array unset _fields
3136	set _curFldName ""
3137	foreach cname [$_first components] {
3138	foreach fname [$_first fieldnames $cname] {
3139	if { [info exists _fields($fname)] } {
3140	continue
3141	}
3142	foreach { label units components } \
3143	[$_first fieldinfo $fname] break
3144	$itk_component(field) choices insert end "$fname" "$label"
3145	$itk_component(fieldmenu) add radiobutton -label "$label" \
3146	-value $label -variable [itcl::scope _curFldLabel] \
3147	-selectcolor red \
3148	-activebackground $itk_option(-plotbackground) \
3149	-activeforeground $itk_option(-plotforeground) \
3150	-font "Arial 8" \
3151	-command [itcl::code $this LegendTitleAction save]
3152	set _fields($fname) [list $label $units $components]
3153	if { $_curFldName == "" } {
3154	set _curFldName $fname
3155	set _curFldLabel $label
3156	}
3157	}
3158	}
3159	$itk_component(field) value $_curFldLabel
3160	if { $_settings(-customrange) } {
3161	set limits [list [$itk_component(min) value] [$itk_component(max) value]]
3162	SendCmd "dataset maprange explicit $limits $_curFldName"
3163	if { $limits != $_currentLimits } {
3164	set _currentLimits $limits
3165	EventuallyChangeContourLevels
3166	}
3167	} else {
3168	if { ![info exists _limits($_curFldName)] } {
3169	SendCmd "dataset maprange all"
3170	} else {
3171	set limits $_limits($_curFldName)
3172	SendCmd "dataset maprange explicit $limits $_curFldName"
3173	if { $limits != $_currentLimits } {
3174	set _currentLimits $limits
3175	EventuallyChangeContourLevels
3176	}
3177	}
3178	}
3179	}

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