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source: branches/1.3/gui/scripts/vtkisosurfaceviewer.tcl @ 5250

Last change on this file since 5250 was 5250, checked in by ldelgass, 10 years ago
merge r5187 from 1.4 branch
File size: 110.9 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	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 _fieldNames {}
167	private variable _fields
168	private variable _curFldName ""
169	private variable _curFldLabel ""
170
171	private variable _mouseOver ""; # what called LegendRangeAction, vmin or vmax
172	private variable _customRangeClick 1; # what called ToggleCustomRange
173	}
174
175	itk::usual VtkIsosurfaceViewer {
176	keep -background -foreground -cursor -font
177	keep -plotbackground -plotforeground
178	}
179
180	# ----------------------------------------------------------------------
181	# CONSTRUCTOR
182	# ----------------------------------------------------------------------
183	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
184	package require vtk
185	set _serverType "vtkvis"
186
187	# Rebuild event
188	$_dispatcher register !rebuild
189	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
190
191	# Resize event
192	$_dispatcher register !resize
193	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
194
195	# Rotate event
196	$_dispatcher register !rotate
197	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
198
199	# Legend event
200	$_dispatcher register !legend
201	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
202
203	# Contour levels event
204	$_dispatcher register !contours
205	$_dispatcher dispatch $this !contours \
206	"[itcl::code $this DoChangeContourLevels]; list"
207
208	# X-Cutplane event
209	$_dispatcher register !xcutplane
210	$_dispatcher dispatch $this !xcutplane \
211	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
212
213	# Y-Cutplane event
214	$_dispatcher register !ycutplane
215	$_dispatcher dispatch $this !ycutplane \
216	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
217
218	# Z-Cutplane event
219	$_dispatcher register !zcutplane
220	$_dispatcher dispatch $this !zcutplane \
221	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
222
223	#
224	# Populate parser with commands handle incoming requests
225	#
226	$_parser alias image [itcl::code $this ReceiveImage]
227	$_parser alias dataset [itcl::code $this ReceiveDataset]
228	$_parser alias legend [itcl::code $this ReceiveLegend]
229
230	# Initialize the view to some default parameters.
231	array set _view {
232	-ortho 0
233	-qw 0.853553
234	-qx -0.353553
235	-qy 0.353553
236	-qz 0.146447
237	-xpan 0
238	-ypan 0
239	-zoom 1.0
240	}
241	set _arcball [blt::arcball create 100 100]
242	$_arcball quaternion [ViewToQuaternion]
243
244	array set _contourList {
245	numLevels 10
246	reqValues ""
247	updatePending 0
248	values ""
249	}
250	array set _settings {
251	-axesvisible 1
252	-axislabels 1
253	-axisminorticks 1
254	-axismode "static"
255	-background black
256	-colormap BCGYR
257	-colormapvisible 1
258	-customrange 0
259	-customrangemin 0
260	-customrangemax 1
261	-cutplaneedges 0
262	-cutplanelighting 1
263	-cutplaneopacity 1.0
264	-cutplanepreinterp 1
265	-cutplanesvisible 0
266	-cutplanewireframe 0
267	-field "Default"
268	-isolinecolor white
269	-isosurfaceedges 0
270	-isosurfacelighting 1
271	-isosurfaceopacity 0.6
272	-isosurfacevisible 1
273	-isosurfacewireframe 0
274	-legendvisible 1
275	-numcontours 10
276	-outline 0
277	-xcutplaneposition 50
278	-xcutplanevisible 1
279	-xgrid 0
280	-ycutplaneposition 50
281	-ycutplanevisible 1
282	-ygrid 0
283	-zcutplaneposition 50
284	-zcutplanevisible 1
285	-zgrid 0
286	}
287	array set _changed {
288	-colormap 0
289	-cutplaneedges 0
290	-cutplanelighting 0
291	-cutplaneopacity 0
292	-cutplanepreinterp 0
293	-cutplanesvisible 0
294	-cutplanewireframe 0
295	-isosurfaceedges 0
296	-isosurfacelighting 0
297	-isosurfaceopacity 0
298	-isosurfacevisible 0
299	-isosurfacewireframe 0
300	-numcontours 0
301	-outline 0
302	-xcutplaneposition 0
303	-xcutplanevisible 0
304	-ycutplaneposition 0
305	-ycutplanevisible 0
306	-zcutplaneposition 0
307	-zcutplanevisible 0
308	}
309	array set _widget {
310	-isosurfaceopacity 60
311	-cutplaneopacity 100
312	}
313
314	itk_component add view {
315	canvas $itk_component(plotarea).view \
316	-highlightthickness 0 -borderwidth 0
317	} {
318	usual
319	ignore -highlightthickness -borderwidth -background
320	}
321
322	itk_component add fieldmenu {
323	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
324	-tearoff 0
325	} {
326	usual
327	ignore -background -foreground -relief -tearoff
328	}
329
330	# add an editor for adjusting the legend min and max values
331	itk_component add editor {
332	Rappture::Editor $itk_interior.editor \
333	-activatecommand [itcl::code $this LegendRangeAction activate] \
334	-validatecommand [itcl::code $this LegendRangeAction validate] \
335	-applycommand [itcl::code $this LegendRangeAction apply]
336	}
337
338	set c $itk_component(view)
339	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
340	bind $c <4> [itcl::code $this Zoom in 0.25]
341	bind $c <5> [itcl::code $this Zoom out 0.25]
342	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
343	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
344	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
345	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
346	bind $c <Enter> "focus %W"
347	bind $c <Control-F1> [itcl::code $this ToggleConsole]
348
349	# Fix the scrollregion in case we go off screen
350	$c configure -scrollregion [$c bbox all]
351
352	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
353	set _map(cwidth) -1
354	set _map(cheight) -1
355	set _map(zoom) 1.0
356	set _map(original) ""
357
358	set f [$itk_component(main) component controls]
359	itk_component add reset {
360	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
361	-highlightthickness 0 \
362	-image [Rappture::icon reset-view] \
363	-command [itcl::code $this Zoom reset]
364	} {
365	usual
366	ignore -highlightthickness
367	}
368	pack $itk_component(reset) -side top -padx 2 -pady 2
369	Rappture::Tooltip::for $itk_component(reset) \
370	"Reset the view to the default zoom level"
371
372	itk_component add zoomin {
373	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
374	-highlightthickness 0 \
375	-image [Rappture::icon zoom-in] \
376	-command [itcl::code $this Zoom in]
377	} {
378	usual
379	ignore -highlightthickness
380	}
381	pack $itk_component(zoomin) -side top -padx 2 -pady 2
382	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
383
384	itk_component add zoomout {
385	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
386	-highlightthickness 0 \
387	-image [Rappture::icon zoom-out] \
388	-command [itcl::code $this Zoom out]
389	} {
390	usual
391	ignore -highlightthickness
392	}
393	pack $itk_component(zoomout) -side top -padx 2 -pady 2
394	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
395
396	itk_component add contour {
397	Rappture::PushButton $f.contour \
398	-onimage [Rappture::icon volume-on] \
399	-offimage [Rappture::icon volume-off] \
400	-variable [itcl::scope _settings(-isosurfacevisible)] \
401	-command [itcl::code $this AdjustSetting -isosurfacevisible]
402	}
403	$itk_component(contour) select
404	Rappture::Tooltip::for $itk_component(contour) \
405	"Hide the isosurface"
406	pack $itk_component(contour) -padx 2 -pady 2
407
408	itk_component add cutplane {
409	Rappture::PushButton $f.cutplane \
410	-onimage [Rappture::icon cutbutton] \
411	-offimage [Rappture::icon cutbutton] \
412	-variable [itcl::scope _settings(-cutplanesvisible)] \
413	-command [itcl::code $this AdjustSetting -cutplanesvisible]
414	}
415	Rappture::Tooltip::for $itk_component(cutplane) \
416	"Show the cutplanes"
417	pack $itk_component(cutplane) -padx 2 -pady 2
418
419
420	if { [catch {
421	BuildIsosurfaceTab
422	BuildCutplaneTab
423	BuildAxisTab
424	BuildCameraTab
425	} errs] != 0 } {
426	puts stderr errs=$errs
427	}
428
429	# Legend
430	set _image(legend) [image create photo]
431	itk_component add legend {
432	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
433	} {
434	usual
435	ignore -highlightthickness
436	rename -background -plotbackground plotBackground Background
437	}
438
439	# Hack around the Tk panewindow. The problem is that the requested
440	# size of the 3d view isn't set until an image is retrieved from
441	# the server. So the panewindow uses the tiny size.
442	set w 10000
443	pack forget $itk_component(view)
444	blt::table $itk_component(plotarea) \
445	0,0 $itk_component(view) -fill both -reqwidth $w
446	blt::table configure $itk_component(plotarea) c1 -resize none
447
448	SetupMouseRotationBindings
449	SetupMousePanningBindings
450	SetupKeyboardBindings
451
452
453	#bind $itk_component(view) <ButtonRelease-3> \
454	# [itcl::code $this Pick %x %y]
455
456
457	if {[string equal "x11" [tk windowingsystem]]} {
458	# Bindings for zoom via mouse
459	bind $itk_component(view) <4> [itcl::code $this Zoom out]
460	bind $itk_component(view) <5> [itcl::code $this Zoom in]
461	}
462
463	set _image(download) [image create photo]
464
465	eval itk_initialize $args
466
467	EnableWaitDialog 900
468	Connect
469	}
470
471	# ----------------------------------------------------------------------
472	# DESTRUCTOR
473	# ----------------------------------------------------------------------
474	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
475	Disconnect
476	image delete $_image(plot)
477	image delete $_image(download)
478	catch { blt::arcball destroy $_arcball }
479	}
480
481	itcl::body Rappture::VtkIsosurfaceViewer::SetupMouseRotationBindings {} {
482	# Bindings for rotation via mouse
483	bind $itk_component(view) <ButtonPress-1> \
484	[itcl::code $this Rotate click %x %y]
485	bind $itk_component(view) <B1-Motion> \
486	[itcl::code $this Rotate drag %x %y]
487	bind $itk_component(view) <ButtonRelease-1> \
488	[itcl::code $this Rotate release %x %y]
489	}
490
491	itcl::body Rappture::VtkIsosurfaceViewer::DisableMouseRotationBindings {} {
492	# Bindings for rotation via mouse
493	bind $itk_component(view) <ButtonPress-1> ""
494	bind $itk_component(view) <B1-Motion> ""
495	bind $itk_component(view) <ButtonRelease-1> ""
496	}
497
498	itcl::body Rappture::VtkIsosurfaceViewer::SetupMousePanningBindings {} {
499	# Bindings for panning via mouse
500	bind $itk_component(view) <ButtonPress-2> \
501	[itcl::code $this Pan click %x %y]
502	bind $itk_component(view) <B2-Motion> \
503	[itcl::code $this Pan drag %x %y]
504	bind $itk_component(view) <ButtonRelease-2> \
505	[itcl::code $this Pan release %x %y]
506	}
507
508	itcl::body Rappture::VtkIsosurfaceViewer::SetupKeyboardBindings {} {
509	# Bindings for panning via keyboard
510	bind $itk_component(view) <KeyPress-Left> \
511	[itcl::code $this Pan set -10 0]
512	bind $itk_component(view) <KeyPress-Right> \
513	[itcl::code $this Pan set 10 0]
514	bind $itk_component(view) <KeyPress-Up> \
515	[itcl::code $this Pan set 0 -10]
516	bind $itk_component(view) <KeyPress-Down> \
517	[itcl::code $this Pan set 0 10]
518	bind $itk_component(view) <Shift-KeyPress-Left> \
519	[itcl::code $this Pan set -2 0]
520	bind $itk_component(view) <Shift-KeyPress-Right> \
521	[itcl::code $this Pan set 2 0]
522	bind $itk_component(view) <Shift-KeyPress-Up> \
523	[itcl::code $this Pan set 0 -2]
524	bind $itk_component(view) <Shift-KeyPress-Down> \
525	[itcl::code $this Pan set 0 2]
526
527	# Bindings for zoom via keyboard
528	bind $itk_component(view) <KeyPress-Prior> \
529	[itcl::code $this Zoom out]
530	bind $itk_component(view) <KeyPress-Next> \
531	[itcl::code $this Zoom in]
532
533	bind $itk_component(view) <Enter> "focus $itk_component(view)"
534	}
535
536	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
537	if { $_width < 2 } {
538	set _width 500
539	}
540	if { $_height < 2 } {
541	set _height 500
542	}
543	set _start [clock clicks -milliseconds]
544	SendCmd "screen size $_width $_height"
545
546	EventuallyRequestLegend
547	set _resizePending 0
548	}
549
550	itcl::body Rappture::VtkIsosurfaceViewer::DoChangeContourLevels {} {
551	GenerateContourList
552	SendCmd [list contour3d contourlist $_contourList(values)]
553	SendCmd [list camera reset]
554	DrawLegend
555	set _contourList(updatePending) 0
556	}
557
558	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
559	SendCmd "camera orient [ViewToQuaternion]"
560	set _rotatePending 0
561	}
562
563	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
564	if { !$_legendPending } {
565	set _legendPending 1
566	$_dispatcher event -idle !legend
567	}
568	}
569
570	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
571	set _width $w
572	set _height $h
573	$_arcball resize $w $h
574	if { !$_resizePending } {
575	set _resizePending 1
576	$_dispatcher event -after 400 !resize
577	}
578	}
579
580	set rotate_delay 100
581
582	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
583	QuaternionToView $q
584	if { !$_rotatePending } {
585	set _rotatePending 1
586	global rotate_delay
587	$_dispatcher event -after $rotate_delay !rotate
588	}
589	}
590
591	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
592	if { !$_cutplanePending } {
593	set _cutplanePending 1
594	$_dispatcher event -after 100 !${axis}cutplane
595	}
596	}
597
598	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyChangeContourLevels {} {
599	set n $_contourList(numLevels)
600	set _contourList(values) ""
601	if { !$_contourList(updatePending) } {
602	set _contourList(updatePending) 1
603	global rotate_delay
604	$_dispatcher event -after $rotate_delay !contours
605	}
606	}
607
608	# ----------------------------------------------------------------------
609	# USAGE: add <dataobj> ?<settings>?
610	#
611	# Clients use this to add a data object to the plot. The optional
612	# <settings> are used to configure the plot. Allowed settings are
613	# -color, -brightness, -width, -linestyle, and -raise.
614	# ----------------------------------------------------------------------
615	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
616	if { ![$dataobj isvalid] } {
617	return; # Object doesn't contain valid data.
618	}
619	array set params {
620	-color auto
621	-width 1
622	-linestyle solid
623	-brightness 0
624	-raise 0
625	-description ""
626	-param ""
627	-type ""
628	}
629	array set params $settings
630	set params(-description) ""
631	set params(-param) ""
632	array set params $settings
633
634	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
635	# can't handle -autocolors yet
636	set params(-color) black
637	}
638	set pos [lsearch -exact $_dlist $dataobj]
639	if {$pos < 0} {
640	lappend _dlist $dataobj
641	}
642	set _obj2ovride($dataobj-color) $params(-color)
643	set _obj2ovride($dataobj-width) $params(-width)
644	set _obj2ovride($dataobj-raise) $params(-raise)
645	$_dispatcher event -idle !rebuild
646	}
647
648	# ----------------------------------------------------------------------
649	# USAGE: delete ?<dataobj1> <dataobj2> ...?
650	#
651	# Clients use this to delete a dataobj from the plot. If no dataobjs
652	# are specified, then all dataobjs are deleted. No data objects are
653	# deleted. They are only removed from the display list.
654	#
655	# ----------------------------------------------------------------------
656	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
657	if { [llength $args] == 0} {
658	set args $_dlist
659	}
660	# Delete all specified dataobjs
661	set changed 0
662	foreach dataobj $args {
663	set pos [lsearch -exact $_dlist $dataobj]
664	if { $pos < 0 } {
665	continue; # Don't know anything about it.
666	}
667	# Remove it from the dataobj list.
668	set _dlist [lreplace $_dlist $pos $pos]
669	array unset _obj2ovride $dataobj-*
670	array unset _settings $dataobj-*
671	set changed 1
672	}
673	# If anything changed, then rebuild the plot
674	if { $changed } {
675	$_dispatcher event -idle !rebuild
676	}
677	}
678
679	# ----------------------------------------------------------------------
680	# USAGE: get ?-objects?
681	# USAGE: get ?-visible?
682	# USAGE: get ?-image view?
683	#
684	# Clients use this to query the list of objects being plotted, in
685	# order from bottom to top of this result. The optional "-image"
686	# flag can also request the internal images being shown.
687	# ----------------------------------------------------------------------
688	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
689	if {[llength $args] == 0} {
690	set args "-objects"
691	}
692
693	set op [lindex $args 0]
694	switch -- $op {
695	"-objects" {
696	# put the dataobj list in order according to -raise options
697	set dlist {}
698	foreach dataobj $_dlist {
699	if { ![IsValidObject $dataobj] } {
700	continue
701	}
702	if {[info exists _obj2ovride($dataobj-raise)] &&
703	$_obj2ovride($dataobj-raise)} {
704	set dlist [linsert $dlist 0 $dataobj]
705	} else {
706	lappend dlist $dataobj
707	}
708	}
709	return $dlist
710	}
711	"-visible" {
712	set dlist {}
713	foreach dataobj $_dlist {
714	if { ![IsValidObject $dataobj] } {
715	continue
716	}
717	if { ![info exists _obj2ovride($dataobj-raise)] } {
718	# No setting indicates that the object isn't visible.
719	continue
720	}
721	# Otherwise use the -raise parameter to put the object to
722	# the front of the list.
723	if { $_obj2ovride($dataobj-raise) } {
724	set dlist [linsert $dlist 0 $dataobj]
725	} else {
726	lappend dlist $dataobj
727	}
728	}
729	return $dlist
730	}
731	-image {
732	if {[llength $args] != 2} {
733	error "wrong # args: should be \"get -image view\""
734	}
735	switch -- [lindex $args end] {
736	view {
737	return $_image(plot)
738	}
739	default {
740	error "bad image name \"[lindex $args end]\": should be view"
741	}
742	}
743	}
744	default {
745	error "bad option \"$op\": should be -objects or -image"
746	}
747	}
748	}
749
750	# ----------------------------------------------------------------------
751	# USAGE: scale ?<data1> <data2> ...?
752	#
753	# Sets the default limits for the overall plot according to the
754	# limits of the data for all of the given <data> objects. This
755	# accounts for all objects--even those not showing on the screen.
756	# Because of this, the limits are appropriate for all objects as
757	# the user scans through data in the ResultSet viewer.
758	# ----------------------------------------------------------------------
759	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
760	foreach dataobj $args {
761	if { ![$dataobj isvalid] } {
762	continue; # Object doesn't contain valid data.
763	}
764	foreach axis { x y z } {
765	set lim [$dataobj limits $axis]
766	if { ![info exists _limits($axis)] } {
767	set _limits($axis) $lim
768	continue
769	}
770	foreach {min max} $lim break
771	foreach {amin amax} $_limits($axis) break
772	if { $amin > $min } {
773	set amin $min
774	}
775	if { $amax < $max } {
776	set amax $max
777	}
778	set _limits($axis) [list $amin $amax]
779	}
780	foreach { fname lim } [$dataobj fieldlimits] {
781	if { ![info exists _limits($fname)] } {
782	set _limits($fname) $lim
783
784	# set reasonable defaults for
785	# customrangevmin and customrangevmax
786	foreach {min max} $lim break
787	SetMinMaxGauges $min $max
788	set _settings(-customrangemin) $min
789	set _settings(-customrangemax) $max
790
791	continue
792	}
793	foreach {min max} $lim break
794	foreach {fmin fmax} $_limits($fname) break
795	if { ! $_settings(-customrange) } {
796	SetMinMaxGauges $fmin $fmax
797	}
798	if { $fmin > $min } {
799	set fmin $min
800	}
801	if { $fmax < $max } {
802	set fmax $max
803	}
804	set _limits($fname) [list $fmin $fmax]
805	}
806	}
807	}
808
809	# ----------------------------------------------------------------------
810	# USAGE: download coming
811	# USAGE: download controls <downloadCommand>
812	# USAGE: download now
813	#
814	# Clients use this method to create a downloadable representation
815	# of the plot. Returns a list of the form {ext string}, where
816	# "ext" is the file extension (indicating the type of data) and
817	# "string" is the data itself.
818	# ----------------------------------------------------------------------
819	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
820	switch $option {
821	coming {
822	if {[catch {
823	blt::winop snap $itk_component(plotarea) $_image(download)
824	}]} {
825	$_image(download) configure -width 1 -height 1
826	$_image(download) put #000000
827	}
828	}
829	controls {
830	set popup .vtkviewerdownload
831	if { ![winfo exists .vtkviewerdownload] } {
832	set inner [BuildDownloadPopup $popup [lindex $args 0]]
833	} else {
834	set inner [$popup component inner]
835	}
836	set _downloadPopup(image_controls) $inner.image_frame
837	set num [llength [get]]
838	set num [expr {($num == 1) ? "1 result" : "$num results"}]
839	set word [Rappture::filexfer::label downloadWord]
840	$inner.summary configure -text "$word $num in the following format:"
841	update idletasks ;# Fix initial sizes
842	return $popup
843	}
844	now {
845	set popup .vtkviewerdownload
846	if {[winfo exists .vtkviewerdownload]} {
847	$popup deactivate
848	}
849	switch -- $_downloadPopup(format) {
850	"image" {
851	return [$this GetImage [lindex $args 0]]
852	}
853	"vtk" {
854	return [$this GetVtkData [lindex $args 0]]
855	}
856	}
857	return ""
858	}
859	default {
860	error "bad option \"$option\": should be coming, controls, now"
861	}
862	}
863	}
864
865	# ----------------------------------------------------------------------
866	# USAGE: Connect ?<host:port>,<host:port>...?
867	#
868	# Clients use this method to establish a connection to a new
869	# server, or to reestablish a connection to the previous server.
870	# Any existing connection is automatically closed.
871	# ----------------------------------------------------------------------
872	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
873	set _hosts [GetServerList "vtkvis"]
874	if { "" == $_hosts } {
875	return 0
876	}
877	set _reset 1
878	set result [VisViewer::Connect $_hosts]
879	if { $result } {
880	if { $_reportClientInfo } {
881	# Tell the server the viewer, hub, user and session.
882	# Do this immediately on connect before buffering any commands
883	global env
884
885	set info {}
886	set user "???"
887	if { [info exists env(USER)] } {
888	set user $env(USER)
889	}
890	set session "???"
891	if { [info exists env(SESSION)] } {
892	set session $env(SESSION)
893	}
894	lappend info "version" "$Rappture::version"
895	lappend info "build" "$Rappture::build"
896	lappend info "svnurl" "$Rappture::svnurl"
897	lappend info "installdir" "$Rappture::installdir"
898	lappend info "hub" [exec hostname]
899	lappend info "client" "vtkisosurfaceviewer"
900	lappend info "user" $user
901	lappend info "session" $session
902	SendCmd "clientinfo [list $info]"
903	}
904
905	set w [winfo width $itk_component(view)]
906	set h [winfo height $itk_component(view)]
907	EventuallyResize $w $h
908	}
909	return $result
910	}
911
912	#
913	# isconnected --
914	#
915	# Indicates if we are currently connected to the visualization server.
916	#
917	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
918	return [VisViewer::IsConnected]
919	}
920
921	#
922	# disconnect --
923	#
924	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
925	Disconnect
926	set _reset 1
927	}
928
929	#
930	# Disconnect --
931	#
932	# Clients use this method to disconnect from the current rendering
933	# server.
934	#
935	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
936	VisViewer::Disconnect
937
938	$_dispatcher cancel !rebuild
939	$_dispatcher cancel !resize
940	$_dispatcher cancel !rotate
941	$_dispatcher cancel !xcutplane
942	$_dispatcher cancel !ycutplane
943	$_dispatcher cancel !zcutplane
944	$_dispatcher cancel !legend
945	# disconnected -- no more data sitting on server
946	array unset _datasets
947	array unset _colormaps
948	}
949
950	# ----------------------------------------------------------------------
951	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
952	#
953	# Invoked automatically whenever the "image" command comes in from
954	# the rendering server. Indicates that binary image data with the
955	# specified <size> will follow.
956	# ----------------------------------------------------------------------
957	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
958	array set info {
959	-token "???"
960	-bytes 0
961	-type image
962	}
963	array set info $args
964	set bytes [ReceiveBytes $info(-bytes)]
965	if { $info(-type) == "image" } {
966	if 0 {
967	set f [open "last.ppm" "w"]
968	fconfigure $f -encoding binary
969	puts -nonewline $f $bytes
970	close $f
971	}
972	$_image(plot) configure -data $bytes
973	#set time [clock seconds]
974	#set date [clock format $time]
975	#set w [image width $_image(plot)]
976	#set h [image height $_image(plot)]
977	#puts stderr "$date: received image ${w}x${h} image"
978	if { $_start > 0 } {
979	set finish [clock clicks -milliseconds]
980	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
981	set _start 0
982	}
983	} elseif { $info(type) == "print" } {
984	set tag $this-print-$info(-token)
985	set _hardcopy($tag) $bytes
986	}
987	}
988
989	#
990	# ReceiveDataset --
991	#
992	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
993	if { ![isconnected] } {
994	return
995	}
996	set option [lindex $args 0]
997	switch -- $option {
998	"scalar" {
999	set option [lindex $args 1]
1000	switch -- $option {
1001	"world" {
1002	foreach { x y z value tag } [lrange $args 2 end] break
1003	}
1004	"pixel" {
1005	foreach { x y value tag } [lrange $args 2 end] break
1006	}
1007	}
1008	}
1009	"vector" {
1010	set option [lindex $args 1]
1011	switch -- $option {
1012	"world" {
1013	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
1014	}
1015	"pixel" {
1016	foreach { x y vx vy vz tag } [lrange $args 2 end] break
1017	}
1018	}
1019	}
1020	"names" {
1021	foreach { name } [lindex $args 1] {
1022	#puts stderr "Dataset: $name"
1023	}
1024	}
1025	default {
1026	error "unknown dataset option \"$option\" from server"
1027	}
1028	}
1029	}
1030
1031	# ----------------------------------------------------------------------
1032	# USAGE: Rebuild
1033	#
1034	# Called automatically whenever something changes that affects the
1035	# data in the widget. Clears any existing data and rebuilds the
1036	# widget to display new data.
1037	# ----------------------------------------------------------------------
1038	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
1039	set w [winfo width $itk_component(view)]
1040	set h [winfo height $itk_component(view)]
1041	if { $w < 2 \|\| $h < 2 } {
1042	update
1043	$_dispatcher event -idle !rebuild
1044	return
1045	}
1046
1047	# Turn on buffering of commands to the server. We don't want to
1048	# be preempted by a server disconnect/reconnect (which automatically
1049	# generates a new call to Rebuild).
1050	StartBufferingCommands
1051
1052	if { $_reset } {
1053	set _width $w
1054	set _height $h
1055	$_arcball resize $w $h
1056	DoResize
1057
1058	# Reset the camera and other view parameters
1059	$_arcball quaternion [ViewToQuaternion]
1060	InitSettings -ortho
1061	DoRotate
1062	PanCamera
1063	set _first ""
1064	InitSettings -background \
1065	-xgrid -ygrid -zgrid -axismode \
1066	-axesvisible -axislabels -axisminorticks
1067	#SendCmd "axis lformat all %g"
1068	StopBufferingCommands
1069	SendCmd "imgflush"
1070	StartBufferingCommands
1071	}
1072	set _first ""
1073	SendCmd "dataset visible 0"
1074	eval scale $_dlist
1075	foreach dataobj [get -objects] {
1076	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
1077	set _first $dataobj
1078	SetCurrentFieldName $dataobj
1079	}
1080	foreach comp [$dataobj components] {
1081	set tag $dataobj-$comp
1082	if { ![info exists _datasets($tag)] } {
1083	set bytes [$dataobj vtkdata $comp]
1084	if 0 {
1085	set f [open "/tmp/isosurface.vtk" "w"]
1086	fconfigure $f -translation binary -encoding binary
1087	puts -nonewline $f $bytes
1088	close $f
1089	}
1090	set length [string length $bytes]
1091	if { $_reportClientInfo } {
1092	set info {}
1093	lappend info "tool_id" [$dataobj hints toolid]
1094	lappend info "tool_name" [$dataobj hints toolname]
1095	lappend info "tool_title" [$dataobj hints tooltitle]
1096	lappend info "tool_command" [$dataobj hints toolcommand]
1097	lappend info "tool_revision" [$dataobj hints toolrevision]
1098	lappend info "dataset_label" [$dataobj hints label]
1099	lappend info "dataset_size" $length
1100	lappend info "dataset_tag" $tag
1101	SendCmd "clientinfo [list $info]"
1102	}
1103	SendCmd "dataset add $tag data follows $length"
1104	SendData $bytes
1105	set _datasets($tag) 1
1106	SetObjectStyle $dataobj $comp
1107	}
1108	if { [info exists _obj2ovride($dataobj-raise)] } {
1109	SendCmd "contour3d visible 1 $tag"
1110	}
1111	}
1112	}
1113
1114	InitSettings -cutplanesvisible -isosurfacevisible -outline
1115	if { $_reset } {
1116	# These are settings that rely on a dataset being loaded.
1117	InitSettings \
1118	-isosurfacelighting \
1119	-field \
1120	-range \
1121	-isosurfacevisible \
1122	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
1123	-isosurfacewireframe \
1124	-cutplanesvisible \
1125	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1126	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1127	-cutplanepreinterp -numcontours
1128
1129	Zoom reset
1130	foreach axis { x y z } {
1131	set label ""
1132	if { $_first != "" } {
1133	set label [$_first hints ${axis}label]
1134	}
1135	if { $label == "" } {
1136	set label [string toupper $axis]
1137	}
1138	# May be a space in the axis label
1139	SendCmd [list axis name $axis $label]
1140	}
1141	if { [array size _fields] < 2 } {
1142	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1143	}
1144	set _reset 0
1145	}
1146	# Redraw the legend even if we're using the same colormap. The position
1147	# of the isolines may have changed because the range of data changed.
1148	DrawLegend
1149
1150	# Actually write the commands to the server socket. If it fails, we don't
1151	# care. We're finished here.
1152	blt::busy hold $itk_component(hull)
1153	StopBufferingCommands; # Turn off buffering and send commands.
1154	blt::busy release $itk_component(hull)
1155	}
1156
1157	# ----------------------------------------------------------------------
1158	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1159	#
1160	# Returns a list of server IDs for the current datasets being displayed. This
1161	# is normally a single ID, but it might be a list of IDs if the current data
1162	# object has multiple components.
1163	# ----------------------------------------------------------------------
1164	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1165	set flag [lindex $args 0]
1166	switch -- $flag {
1167	"-all" {
1168	if { [llength $args] > 1 } {
1169	error "CurrentDatasets: can't specify dataobj after \"-all\""
1170	}
1171	set dlist [get -objects]
1172	}
1173	"-visible" {
1174	if { [llength $args] > 1 } {
1175	set dlist {}
1176	set args [lrange $args 1 end]
1177	foreach dataobj $args {
1178	if { [info exists _obj2ovride($dataobj-raise)] } {
1179	lappend dlist $dataobj
1180	}
1181	}
1182	} else {
1183	set dlist [get -visible]
1184	}
1185	}
1186	default {
1187	set dlist $args
1188	}
1189	}
1190	set rlist ""
1191	foreach dataobj $dlist {
1192	foreach comp [$dataobj components] {
1193	set tag $dataobj-$comp
1194	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1195	lappend rlist $tag
1196	}
1197	}
1198	}
1199	return $rlist
1200	}
1201
1202	# ----------------------------------------------------------------------
1203	# USAGE: Zoom in
1204	# USAGE: Zoom out
1205	# USAGE: Zoom reset
1206	#
1207	# Called automatically when the user clicks on one of the zoom
1208	# controls for this widget. Changes the zoom for the current view.
1209	# ----------------------------------------------------------------------
1210	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1211	switch -- $option {
1212	"in" {
1213	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1214	SendCmd "camera zoom $_view(-zoom)"
1215	}
1216	"out" {
1217	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1218	SendCmd "camera zoom $_view(-zoom)"
1219	}
1220	"reset" {
1221	array set _view {
1222	-qw 0.853553
1223	-qx -0.353553
1224	-qy 0.353553
1225	-qz 0.146447
1226	-xpan 0
1227	-ypan 0
1228	-zoom 1.0
1229	}
1230	if { $_first != "" } {
1231	set location [$_first hints camera]
1232	if { $location != "" } {
1233	array set _view $location
1234	}
1235	}
1236	$_arcball quaternion [ViewToQuaternion]
1237	DoRotate
1238	SendCmd "camera reset"
1239	}
1240	}
1241	}
1242
1243	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1244	set x $_view(-xpan)
1245	set y $_view(-ypan)
1246	SendCmd "camera pan $x $y"
1247	}
1248
1249	# ----------------------------------------------------------------------
1250	# USAGE: Rotate click <x> <y>
1251	# USAGE: Rotate drag <x> <y>
1252	# USAGE: Rotate release <x> <y>
1253	#
1254	# Called automatically when the user clicks/drags/releases in the
1255	# plot area. Moves the plot according to the user's actions.
1256	# ----------------------------------------------------------------------
1257	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1258	switch -- $option {
1259	"click" {
1260	$itk_component(view) configure -cursor fleur
1261	set _click(x) $x
1262	set _click(y) $y
1263	}
1264	"drag" {
1265	if {[array size _click] == 0} {
1266	Rotate click $x $y
1267	} else {
1268	set w [winfo width $itk_component(view)]
1269	set h [winfo height $itk_component(view)]
1270	if {$w <= 0 \|\| $h <= 0} {
1271	return
1272	}
1273
1274	if {[catch {
1275	# this fails sometimes for no apparent reason
1276	set dx [expr {double($x-$_click(x))/$w}]
1277	set dy [expr {double($y-$_click(y))/$h}]
1278	}]} {
1279	return
1280	}
1281	if { $dx == 0 && $dy == 0 } {
1282	return
1283	}
1284	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1285	EventuallyRotate $q
1286	set _click(x) $x
1287	set _click(y) $y
1288	}
1289	}
1290	"release" {
1291	Rotate drag $x $y
1292	$itk_component(view) configure -cursor ""
1293	catch {unset _click}
1294	}
1295	default {
1296	error "bad option \"$option\": should be click, drag, release"
1297	}
1298	}
1299	}
1300
1301	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1302	foreach tag [CurrentDatasets -visible] {
1303	SendCmd "dataset getscalar pixel $x $y $tag"
1304	}
1305	}
1306
1307	# ----------------------------------------------------------------------
1308	# USAGE: $this Pan click x y
1309	# $this Pan drag x y
1310	# $this Pan release x y
1311	#
1312	# Called automatically when the user clicks on one of the zoom
1313	# controls for this widget. Changes the zoom for the current view.
1314	# ----------------------------------------------------------------------
1315	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1316	switch -- $option {
1317	"set" {
1318	set w [winfo width $itk_component(view)]
1319	set h [winfo height $itk_component(view)]
1320	set x [expr $x / double($w)]
1321	set y [expr $y / double($h)]
1322	set _view(-xpan) [expr $_view(-xpan) + $x]
1323	set _view(-ypan) [expr $_view(-ypan) + $y]
1324	PanCamera
1325	return
1326	}
1327	"click" {
1328	set _click(x) $x
1329	set _click(y) $y
1330	$itk_component(view) configure -cursor hand1
1331	}
1332	"drag" {
1333	if { ![info exists _click(x)] } {
1334	set _click(x) $x
1335	}
1336	if { ![info exists _click(y)] } {
1337	set _click(y) $y
1338	}
1339	set w [winfo width $itk_component(view)]
1340	set h [winfo height $itk_component(view)]
1341	set dx [expr ($_click(x) - $x)/double($w)]
1342	set dy [expr ($_click(y) - $y)/double($h)]
1343	set _click(x) $x
1344	set _click(y) $y
1345	set _view(-xpan) [expr $_view(-xpan) - $dx]
1346	set _view(-ypan) [expr $_view(-ypan) - $dy]
1347	PanCamera
1348	}
1349	"release" {
1350	Pan drag $x $y
1351	$itk_component(view) configure -cursor ""
1352	}
1353	default {
1354	error "unknown option \"$option\": should set, click, drag, or release"
1355	}
1356	}
1357	}
1358
1359	# ----------------------------------------------------------------------
1360	# USAGE: InitSettings <what> ?<value>?
1361	#
1362	# Used internally to update rendering settings whenever parameters
1363	# change in the popup settings panel. Sends the new settings off
1364	# to the back end.
1365	# ----------------------------------------------------------------------
1366	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1367	foreach spec $args {
1368	if { [info exists _settings($_first-$spec)] } {
1369	# Reset global setting with dataobj specific setting
1370	set _settings($spec) $_settings($_first-$spec)
1371	}
1372	AdjustSetting $spec
1373	}
1374	}
1375
1376	#
1377	# AdjustSetting --
1378	#
1379	# Changes/updates a specific setting in the widget. There are
1380	# usually user-setable option. Commands are sent to the render
1381	# server.
1382	#
1383	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1384	if { ![isconnected] } {
1385	return
1386	}
1387	switch -- $what {
1388	"-axesvisible" {
1389	set bool $_settings($what)
1390	SendCmd "axis visible all $bool"
1391	}
1392	"-axislabels" {
1393	set bool $_settings($what)
1394	SendCmd "axis labels all $bool"
1395	}
1396	"-axisminorticks" {
1397	set bool $_settings($what)
1398	SendCmd "axis minticks all $bool"
1399	}
1400	"-axismode" {
1401	set mode [$itk_component(axisMode) value]
1402	set mode [$itk_component(axisMode) translate $mode]
1403	set _settings($what) $mode
1404	SendCmd "axis flymode $mode"
1405	}
1406	"-background" {
1407	set bgcolor [$itk_component(background) value]
1408	array set fgcolors {
1409	"black" "white"
1410	"white" "black"
1411	"grey" "black"
1412	}
1413	configure -plotbackground $bgcolor \
1414	-plotforeground $fgcolors($bgcolor)
1415	$itk_component(view) delete "legend"
1416	DrawLegend
1417	}
1418	"-cutplaneedges" {
1419	set _changed($what) 1
1420	set bool $_settings($what)
1421	SendCmd "cutplane edges $bool"
1422	}
1423	"-cutplanelighting" {
1424	set _changed($what) 1
1425	set bool $_settings($what)
1426	SendCmd "cutplane lighting $bool"
1427	}
1428	"-cutplaneopacity" {
1429	set _changed($what) 1
1430	set _settings($what) [expr $_widget($what) * 0.01]
1431	SendCmd "cutplane opacity $_settings($what)"
1432	}
1433	"-cutplanepreinterp" {
1434	set _changed($what) 1
1435	set bool $_settings($what)
1436	SendCmd "cutplane preinterp $bool"
1437	}
1438	"-cutplanesvisible" {
1439	set _changed($what) 1
1440	set bool $_settings($what)
1441	SendCmd "cutplane visible 0"
1442	if { $bool } {
1443	foreach tag [CurrentDatasets -visible] {
1444	SendCmd "cutplane visible $bool $tag"
1445	}
1446	}
1447	if { $bool } {
1448	Rappture::Tooltip::for $itk_component(cutplane) \
1449	"Hide the cutplanes"
1450	} else {
1451	Rappture::Tooltip::for $itk_component(cutplane) \
1452	"Show the cutplanes"
1453	}
1454	}
1455	"-cutplanewireframe" {
1456	set _changed($what) 1
1457	set bool $_settings($what)
1458	SendCmd "cutplane wireframe $bool"
1459	}
1460	"-colormap" {
1461	set _changed($what) 1
1462	StartBufferingCommands
1463	set color [$itk_component(colormap) value]
1464	set _settings($what) $color
1465	if { $color == "none" } {
1466	if { $_settings(-colormapvisible) } {
1467	SendCmd "contour3d colormode constant {}"
1468	set _settings(-colormapvisible) 0
1469	}
1470	} else {
1471	if { !$_settings(-colormapvisible) } {
1472	SendCmd "contour3d colormode $_colorMode $_curFldName"
1473	set _settings(-colormapvisible) 1
1474	}
1475	SetCurrentColormap $color
1476	}
1477	StopBufferingCommands
1478	EventuallyRequestLegend
1479	}
1480	"-field" {
1481	set label [$itk_component(field) value]
1482	set fname [$itk_component(field) translate $label]
1483	set _settings($what) $fname
1484	if { [info exists _fields($fname)] } {
1485	foreach { label units components } $_fields($fname) break
1486	if { $components > 1 } {
1487	set _colorMode vmag
1488	} else {
1489	set _colorMode scalar
1490	}
1491	set _curFldName $fname
1492	set _curFldLabel $label
1493	} else {
1494	puts stderr "unknown field \"$fname\""
1495	return
1496	}
1497	SendCmd "dataset scalar $_curFldName"
1498	if { ![info exists _limits($_curFldName)] } {
1499	SendCmd "dataset maprange all"
1500	} else {
1501	if { $_settings(-customrange) } {
1502	set vmin [$itk_component(min) value]
1503	set vmax [$itk_component(max) value]
1504	} else {
1505	foreach { vmin vmax } $_limits($_curFldName) break
1506	# set the min / max gauges with limits from the field
1507	# the legend's min and max text will be updated
1508	# when the legend is redrawn in DrawLegend
1509	SetMinMaxGauges $vmin $vmax
1510	}
1511	SendCmd "dataset maprange explicit $vmin $vmax $_curFldName"
1512	}
1513	SendCmd "cutplane colormode $_colorMode $_curFldName"
1514	SendCmd "contour3d colormode $_colorMode $_curFldName"
1515	SendCmd "camera reset"
1516	GenerateContourList
1517	DrawLegend
1518	}
1519	"-isolinecolor" {
1520	set color [$itk_component(isolineColor) value]
1521	set _settings($what) $color
1522	DrawLegend
1523	}
1524	"-isosurfaceedges" {
1525	set _changed($what) 1
1526	set bool $_settings($what)
1527	SendCmd "contour3d edges $bool"
1528	}
1529	"-isosurfacelighting" {
1530	set _changed($what) 1
1531	set bool $_settings($what)
1532	SendCmd "contour3d lighting $bool"
1533	}
1534	"-isosurfaceopacity" {
1535	set _changed($what) 1
1536	set _settings($what) [expr $_widget($what) * 0.01]
1537	SendCmd "contour3d opacity $_settings($what)"
1538	}
1539	"-isosurfacevisible" {
1540	set _changed($what) 1
1541	set bool $_settings($what)
1542	SendCmd "contour3d visible 0"
1543	if { $bool } {
1544	foreach tag [CurrentDatasets -visible] {
1545	SendCmd "contour3d visible $bool $tag"
1546	}
1547	Rappture::Tooltip::for $itk_component(contour) \
1548	"Hide the isosurface"
1549	} else {
1550	Rappture::Tooltip::for $itk_component(contour) \
1551	"Show the isosurface"
1552	}
1553	}
1554	"-isosurfacewireframe" {
1555	set _changed($what) 1
1556	set bool $_settings($what)
1557	SendCmd "contour3d wireframe $bool"
1558	}
1559	"-legendvisible" {
1560	if { !$_settings($what) } {
1561	$itk_component(view) delete legend
1562	}
1563	DrawLegend
1564	}
1565	"-numcontours" {
1566	set _changed($what) 1
1567	set _settings($what) [$itk_component(numcontours) value]
1568	if { $_contourList(numLevels) != $_settings($what) } {
1569	set _contourList(numLevels) $_settings($what)
1570	EventuallyChangeContourLevels
1571	}
1572	}
1573	"-ortho" {
1574	set bool $_view($what)
1575	if { $bool } {
1576	SendCmd "camera mode ortho"
1577	} else {
1578	SendCmd "camera mode persp"
1579	}
1580	}
1581	"-outline" {
1582	set _changed($what) 1
1583	set bool $_settings($what)
1584	SendCmd "outline visible 0"
1585	if { $bool } {
1586	foreach tag [CurrentDatasets -visible] {
1587	SendCmd "outline visible $bool $tag"
1588	}
1589	}
1590	}
1591	"-range" {
1592	if { $_settings(-customrange) } {
1593	set vmin [$itk_component(min) value]
1594	set vmax [$itk_component(max) value]
1595	} else {
1596	foreach { vmin vmax } $_limits($_curFldName) break
1597	}
1598	GenerateContourList
1599	SendCmd [list contour3d contourlist $_contourList(values)]
1600	SendCmd "dataset maprange explicit $vmin $vmax $_curFldName"
1601	DrawLegend
1602	}
1603	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1604	set _changed($what) 1
1605	set axis [string tolower [string range $what 1 1]]
1606	set bool $_settings($what)
1607	if { $bool } {
1608	$itk_component(${axis}position) configure -state normal \
1609	-troughcolor white
1610	} else {
1611	$itk_component(${axis}position) configure -state disabled \
1612	-troughcolor grey82
1613	}
1614	SendCmd "cutplane axis $axis $bool"
1615	}
1616	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1617	set _changed($what) 1
1618	set axis [string tolower [string range $what 1 1]]
1619	set pos [expr $_settings($what) * 0.01]
1620	SendCmd "cutplane slice ${axis} ${pos}"
1621	set _cutplanePending 0
1622	}
1623	"-xgrid" - "-ygrid" - "-zgrid" {
1624	set axis [string tolower [string range $what 1 1]]
1625	set bool $_settings($what)
1626	SendCmd "axis grid $axis $bool"
1627	}
1628	default {
1629	error "don't know how to fix $what"
1630	}
1631	}
1632	}
1633
1634	#
1635	# RequestLegend --
1636	#
1637	# Request a new legend from the server. The size of the legend
1638	# is determined from the height of the canvas.
1639	#
1640	# This should be called when
1641	# 1. A new current colormap is set.
1642	# 2. Window is resized.
1643	# 3. The limits of the data have changed. (Just need a redraw).
1644	# 4. Number of isolines have changed. (Just need a redraw).
1645	# 5. Legend becomes visible (Just need a redraw).
1646	#
1647	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1648	set _legendPending 0
1649	if { ![info exists _fields($_curFldName)] } {
1650	return
1651	}
1652	set fname $_curFldName
1653	set font "Arial 8"
1654	set lineht [font metrics $font -linespace]
1655	set w 12
1656	set h [expr {$_height - 2 * ($lineht + 2)}]
1657	if { $h < 1 } {
1658	return
1659	}
1660	if { [string match "component*" $fname] } {
1661	set title ""
1662	} else {
1663	if { [info exists _fields($fname)] } {
1664	foreach { title units } $_fields($fname) break
1665	if { $units != "" } {
1666	set title [format "%s (%s)" $title $units]
1667	}
1668	} else {
1669	set title $fname
1670	}
1671	}
1672	# If there's a title too, subtract one more line
1673	if { $title != "" } {
1674	incr h -$lineht
1675	}
1676	# Set the legend on the first isosurface dataset.
1677	if { $_currentColormap != "" } {
1678	set cmap $_currentColormap
1679	if { ![info exists _colormaps($cmap)] } {
1680	BuildColormap $cmap
1681	set _colormaps($cmap) 1
1682	}
1683	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1684	SendCmd "legend2 $cmap $w $h"
1685	}
1686	}
1687
1688	# ----------------------------------------------------------------------
1689	# CONFIGURATION OPTION: -plotbackground
1690	# ----------------------------------------------------------------------
1691	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1692	if { [isconnected] } {
1693	set rgb [Color2RGB $itk_option(-plotbackground)]
1694	SendCmd "screen bgcolor $rgb"
1695	}
1696	}
1697
1698	# ----------------------------------------------------------------------
1699	# CONFIGURATION OPTION: -plotforeground
1700	# ----------------------------------------------------------------------
1701	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1702	if { [isconnected] } {
1703	set rgb [Color2RGB $itk_option(-plotforeground)]
1704	SendCmd "axis color all $rgb"
1705	SendCmd "outline color $rgb"
1706	SendCmd "cutplane color $rgb"
1707	}
1708	}
1709
1710	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1711
1712	set fg [option get $itk_component(hull) font Font]
1713	#set bfg [option get $itk_component(hull) boldFont Font]
1714
1715	set inner [$itk_component(main) insert end \
1716	-title "Isosurface Settings" \
1717	-icon [Rappture::icon volume-on]]
1718	$inner configure -borderwidth 4
1719
1720	checkbutton $inner.contour \
1721	-text "Isosurfaces" \
1722	-variable [itcl::scope _settings(-isosurfacevisible)] \
1723	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
1724	-font "Arial 9"
1725
1726	checkbutton $inner.wireframe \
1727	-text "Wireframe" \
1728	-variable [itcl::scope _settings(-isosurfacewireframe)] \
1729	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
1730	-font "Arial 9"
1731
1732	checkbutton $inner.lighting \
1733	-text "Enable Lighting" \
1734	-variable [itcl::scope _settings(-isosurfacelighting)] \
1735	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
1736	-font "Arial 9"
1737
1738	checkbutton $inner.edges \
1739	-text "Edges" \
1740	-variable [itcl::scope _settings(-isosurfaceedges)] \
1741	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
1742	-font "Arial 9"
1743
1744	checkbutton $inner.outline \
1745	-text "Outline" \
1746	-variable [itcl::scope _settings(-outline)] \
1747	-command [itcl::code $this AdjustSetting -outline] \
1748	-font "Arial 9"
1749
1750	checkbutton $inner.legend \
1751	-text "Legend" \
1752	-variable [itcl::scope _settings(-legendvisible)] \
1753	-command [itcl::code $this AdjustSetting -legendvisible] \
1754	-font "Arial 9"
1755
1756	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1757	itk_component add isolineColor {
1758	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1759	}
1760	$inner.linecolor choices insert end \
1761	"black" "black" \
1762	"blue" "blue" \
1763	"cyan" "cyan" \
1764	"green" "green" \
1765	"grey" "grey" \
1766	"magenta" "magenta" \
1767	"orange" "orange" \
1768	"red" "red" \
1769	"white" "white" \
1770	"none" "none"
1771
1772	$itk_component(isolineColor) value "white"
1773	bind $inner.linecolor <<Value>> \
1774	[itcl::code $this AdjustSetting -isolinecolor]
1775
1776	label $inner.background_l -text "Background" -font "Arial 9"
1777	itk_component add background {
1778	Rappture::Combobox $inner.background -width 10 -editable 0
1779	}
1780	$inner.background choices insert end \
1781	"black" "black" \
1782	"white" "white" \
1783	"grey" "grey"
1784
1785	$itk_component(background) value $_settings(-background)
1786	bind $inner.background <<Value>> \
1787	[itcl::code $this AdjustSetting -background]
1788
1789	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1790	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1791	-variable [itcl::scope _widget(-isosurfaceopacity)] \
1792	-width 10 \
1793	-showvalue off \
1794	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
1795	$inner.opacity set [expr $_settings(-isosurfaceopacity) * 100.0]
1796
1797	itk_component add field_l {
1798	label $inner.field_l -text "Field" -font "Arial 9"
1799	} {
1800	ignore -font
1801	}
1802	itk_component add field {
1803	Rappture::Combobox $inner.field -width 10 -editable 0
1804	}
1805	bind $inner.field <<Value>> \
1806	[itcl::code $this AdjustSetting -field]
1807
1808	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1809	itk_component add colormap {
1810	Rappture::Combobox $inner.colormap -width 10 -editable 0
1811	}
1812	$inner.colormap choices insert end [GetColormapList]
1813
1814	$itk_component(colormap) value "BCGYR"
1815	bind $inner.colormap <<Value>> \
1816	[itcl::code $this AdjustSetting -colormap]
1817
1818	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1819	itk_component add numcontours {
1820	Rappture::Spinint $inner.numcontours \
1821	-min 0 -max 50 -font "arial 9"
1822	}
1823	$itk_component(numcontours) value $_settings(-numcontours)
1824	bind $itk_component(numcontours) <<Value>> \
1825	[itcl::code $this AdjustSetting -numcontours]
1826
1827
1828	# add widgets for setting a custom range on the legend
1829
1830	itk_component add crange {
1831	checkbutton $inner.crange \
1832	-text "Use Custom Range:" \
1833	-variable [itcl::scope _settings(-customrange)] \
1834	-command [itcl::code $this ToggleCustomRange] \
1835	-font "Arial 9"
1836	}
1837
1838	itk_component add l_min {
1839	label $inner.l_min -text "Min" -font "Arial 9"
1840	}
1841	itk_component add min {
1842	Rappture::Gauge $inner.min -font "Arial 9" \
1843	-validatecommand [itcl::code $this LegendRangeValidate "" vmin]
1844	}
1845	bind $itk_component(min) <<Value>> \
1846	[itcl::code $this AdjustSetting -range]
1847
1848	itk_component add l_max {
1849	label $inner.l_max -text "Max" -font "Arial 9"
1850	}
1851	itk_component add max {
1852	Rappture::Gauge $inner.max -font "Arial 9" \
1853	-validatecommand [itcl::code $this LegendRangeValidate "" vmax]
1854	}
1855	bind $itk_component(max) <<Value>> \
1856	[itcl::code $this AdjustSetting -range]
1857
1858	$itk_component(min) configure -state disabled
1859	$itk_component(max) configure -state disabled
1860
1861
1862	blt::table $inner \
1863	0,0 $inner.field_l -anchor w -pady 2 \
1864	0,1 $inner.field -anchor w -pady 2 -fill x \
1865	1,0 $inner.colormap_l -anchor w -pady 2 \
1866	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1867	2,0 $inner.linecolor_l -anchor w -pady 2 \
1868	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1869	3,0 $inner.background_l -anchor w -pady 2 \
1870	3,1 $inner.background -anchor w -pady 2 -fill x \
1871	4,0 $inner.numcontours_l -anchor w -pady 2 \
1872	4,1 $inner.numcontours -anchor w -pady 2 \
1873	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1874	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1875	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1876	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1877	9,0 $inner.legend -anchor w -pady 2 \
1878	10,0 $inner.opacity_l -anchor w -pady 2 \
1879	10,1 $inner.opacity -fill x -pady 2 -fill x \
1880	11,0 $inner.crange -anchor w -pady 2 -cspan 2 \
1881	12,0 $inner.l_min -anchor w -pady 2 \
1882	12,1 $inner.min -anchor w -pady 2 -fill x \
1883	13,0 $inner.l_max -anchor w -pady 2 \
1884	13,1 $inner.max -anchor w -pady 2 -fill x \
1885
1886	blt::table configure $inner r* c* -resize none
1887	blt::table configure $inner r14 c1 -resize expand
1888	}
1889
1890	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1891
1892	set fg [option get $itk_component(hull) font Font]
1893	#set bfg [option get $itk_component(hull) boldFont Font]
1894
1895	set inner [$itk_component(main) insert end \
1896	-title "Axis Settings" \
1897	-icon [Rappture::icon axis2]]
1898	$inner configure -borderwidth 4
1899
1900	checkbutton $inner.visible \
1901	-text "Axes" \
1902	-variable [itcl::scope _settings(-axesvisible)] \
1903	-command [itcl::code $this AdjustSetting -axesvisible] \
1904	-font "Arial 9"
1905
1906	checkbutton $inner.labels \
1907	-text "Axis Labels" \
1908	-variable [itcl::scope _settings(-axislabels)] \
1909	-command [itcl::code $this AdjustSetting -axislabels] \
1910	-font "Arial 9"
1911	label $inner.grid_l -text "Grid" -font "Arial 9"
1912	checkbutton $inner.xgrid \
1913	-text "X" \
1914	-variable [itcl::scope _settings(-xgrid)] \
1915	-command [itcl::code $this AdjustSetting -xgrid] \
1916	-font "Arial 9"
1917	checkbutton $inner.ygrid \
1918	-text "Y" \
1919	-variable [itcl::scope _settings(-ygrid)] \
1920	-command [itcl::code $this AdjustSetting -ygrid] \
1921	-font "Arial 9"
1922	checkbutton $inner.zgrid \
1923	-text "Z" \
1924	-variable [itcl::scope _settings(-zgrid)] \
1925	-command [itcl::code $this AdjustSetting -zgrid] \
1926	-font "Arial 9"
1927	checkbutton $inner.minorticks \
1928	-text "Minor Ticks" \
1929	-variable [itcl::scope _settings(-axisminorticks)] \
1930	-command [itcl::code $this AdjustSetting -axisminorticks] \
1931	-font "Arial 9"
1932
1933	label $inner.mode_l -text "Mode" -font "Arial 9"
1934
1935	itk_component add axisMode {
1936	Rappture::Combobox $inner.mode -width 10 -editable 0
1937	}
1938	$inner.mode choices insert end \
1939	"static_triad" "static" \
1940	"closest_triad" "closest" \
1941	"furthest_triad" "farthest" \
1942	"outer_edges" "outer"
1943	$itk_component(axisMode) value $_settings(-axismode)
1944	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1945
1946	blt::table $inner \
1947	0,0 $inner.visible -anchor w -cspan 4 \
1948	1,0 $inner.labels -anchor w -cspan 4 \
1949	2,0 $inner.minorticks -anchor w -cspan 4 \
1950	4,0 $inner.grid_l -anchor w \
1951	4,1 $inner.xgrid -anchor w \
1952	4,2 $inner.ygrid -anchor w \
1953	4,3 $inner.zgrid -anchor w \
1954	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1955	5,1 $inner.mode -fill x -cspan 3
1956
1957	blt::table configure $inner r* c* -resize none
1958	blt::table configure $inner r7 c6 -resize expand
1959	blt::table configure $inner r3 -height 0.125i
1960	}
1961
1962
1963	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1964	set inner [$itk_component(main) insert end \
1965	-title "Camera Settings" \
1966	-icon [Rappture::icon camera]]
1967	$inner configure -borderwidth 4
1968
1969	label $inner.view_l -text "view" -font "Arial 9"
1970	set f [frame $inner.view]
1971	foreach side { front back left right top bottom } {
1972	button $f.$side -image [Rappture::icon view$side] \
1973	-command [itcl::code $this SetOrientation $side]
1974	Rappture::Tooltip::for $f.$side "Change the view to $side"
1975	pack $f.$side -side left
1976	}
1977
1978	blt::table $inner \
1979	0,0 $inner.view_l -anchor e -pady 2 \
1980	0,1 $inner.view -anchor w -pady 2
1981	blt::table configure $inner r0 -resize none
1982
1983	set labels { qx qy qz qw xpan ypan zoom }
1984	set row 1
1985	foreach tag $labels {
1986	label $inner.${tag}label -text $tag -font "Arial 9"
1987	entry $inner.${tag} -font "Arial 9" -bg white \
1988	-textvariable [itcl::scope _view(-$tag)]
1989	bind $inner.${tag} <Return> \
1990	[itcl::code $this camera set -${tag}]
1991	bind $inner.${tag} <KP_Enter> \
1992	[itcl::code $this camera set -${tag}]
1993	blt::table $inner \
1994	$row,0 $inner.${tag}label -anchor e -pady 2 \
1995	$row,1 $inner.${tag} -anchor w -pady 2
1996	blt::table configure $inner r$row -resize none
1997	incr row
1998	}
1999	checkbutton $inner.ortho \
2000	-text "Orthographic Projection" \
2001	-variable [itcl::scope _view(-ortho)] \
2002	-command [itcl::code $this AdjustSetting -ortho] \
2003	-font "Arial 9"
2004	blt::table $inner \
2005	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2006	blt::table configure $inner r$row -resize none
2007	incr row
2008
2009	blt::table configure $inner c* -resize none
2010	blt::table configure $inner c2 -resize expand
2011	blt::table configure $inner r$row -resize expand
2012	}
2013
2014	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
2015
2016	set fg [option get $itk_component(hull) font Font]
2017
2018	set inner [$itk_component(main) insert end \
2019	-title "Cutplane Settings" \
2020	-icon [Rappture::icon cutbutton]]
2021
2022	$inner configure -borderwidth 4
2023
2024	checkbutton $inner.visible \
2025	-text "Cutplanes" \
2026	-variable [itcl::scope _settings(-cutplanesvisible)] \
2027	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
2028	-font "Arial 9"
2029
2030	checkbutton $inner.wireframe \
2031	-text "Wireframe" \
2032	-variable [itcl::scope _settings(-cutplanewireframe)] \
2033	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
2034	-font "Arial 9"
2035
2036	checkbutton $inner.lighting \
2037	-text "Enable Lighting" \
2038	-variable [itcl::scope _settings(-cutplanelighting)] \
2039	-command [itcl::code $this AdjustSetting -cutplanelighting] \
2040	-font "Arial 9"
2041
2042	checkbutton $inner.edges \
2043	-text "Edges" \
2044	-variable [itcl::scope _settings(-cutplaneedges)] \
2045	-command [itcl::code $this AdjustSetting -cutplaneedges] \
2046	-font "Arial 9"
2047
2048	checkbutton $inner.preinterp \
2049	-text "Interpolate Scalars" \
2050	-variable [itcl::scope _settings(-cutplanepreinterp)] \
2051	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
2052	-font "Arial 9"
2053
2054	label $inner.opacity_l -text "Opacity" -font "Arial 9"
2055	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2056	-variable [itcl::scope _widget(-cutplaneopacity)] \
2057	-width 10 \
2058	-showvalue off \
2059	-command [itcl::code $this AdjustSetting -cutplaneopacity]
2060	$inner.opacity set [expr $_settings(-cutplaneopacity) * 100.0]
2061
2062	# X-value slicer...
2063	itk_component add xbutton {
2064	Rappture::PushButton $inner.xbutton \
2065	-onimage [Rappture::icon x-cutplane-red] \
2066	-offimage [Rappture::icon x-cutplane-red] \
2067	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
2068	-variable [itcl::scope _settings(-xcutplanevisible)] \
2069	}
2070	Rappture::Tooltip::for $itk_component(xbutton) \
2071	"Toggle the X-axis cutplane on/off"
2072	$itk_component(xbutton) select
2073	itk_component add xposition {
2074	::scale $inner.xval -from 100 -to 0 \
2075	-width 10 -orient vertical -showvalue 1 \
2076	-borderwidth 1 -highlightthickness 0 \
2077	-command [itcl::code $this EventuallySetCutplane x] \
2078	-variable [itcl::scope _settings(-xcutplaneposition)] \
2079	-foreground red2 -font "Arial 9 bold"
2080	} {
2081	usual
2082	ignore -borderwidth -highlightthickness -foreground -font -background
2083	}
2084	# Set the default cutplane value before disabling the scale.
2085	$itk_component(xposition) set 50
2086	$itk_component(xposition) configure -state disabled
2087	Rappture::Tooltip::for $itk_component(xposition) \
2088	"@[itcl::code $this Slice tooltip x]"
2089
2090	# Y-value slicer...
2091	itk_component add ybutton {
2092	Rappture::PushButton $inner.ybutton \
2093	-onimage [Rappture::icon y-cutplane-green] \
2094	-offimage [Rappture::icon y-cutplane-green] \
2095	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
2096	-variable [itcl::scope _settings(-ycutplanevisible)] \
2097	}
2098	Rappture::Tooltip::for $itk_component(ybutton) \
2099	"Toggle the Y-axis cutplane on/off"
2100	$itk_component(ybutton) select
2101
2102	itk_component add yposition {
2103	::scale $inner.yval -from 100 -to 0 \
2104	-width 10 -orient vertical -showvalue 1 \
2105	-borderwidth 1 -highlightthickness 0 \
2106	-command [itcl::code $this EventuallySetCutplane y] \
2107	-variable [itcl::scope _settings(-ycutplaneposition)] \
2108	-foreground green3 -font "Arial 9 bold"
2109	} {
2110	usual
2111	ignore -borderwidth -highlightthickness -foreground -font
2112	}
2113	Rappture::Tooltip::for $itk_component(yposition) \
2114	"@[itcl::code $this Slice tooltip y]"
2115	# Set the default cutplane value before disabling the scale.
2116	$itk_component(yposition) set 50
2117	$itk_component(yposition) configure -state disabled
2118
2119	# Z-value slicer...
2120	itk_component add zbutton {
2121	Rappture::PushButton $inner.zbutton \
2122	-onimage [Rappture::icon z-cutplane-blue] \
2123	-offimage [Rappture::icon z-cutplane-blue] \
2124	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
2125	-variable [itcl::scope _settings(-zcutplanevisible)] \
2126	} {
2127	usual
2128	ignore -foreground
2129	}
2130	Rappture::Tooltip::for $itk_component(zbutton) \
2131	"Toggle the Z-axis cutplane on/off"
2132	$itk_component(zbutton) select
2133
2134	itk_component add zposition {
2135	::scale $inner.zval -from 100 -to 0 \
2136	-width 10 -orient vertical -showvalue 1 \
2137	-borderwidth 1 -highlightthickness 0 \
2138	-command [itcl::code $this EventuallySetCutplane z] \
2139	-variable [itcl::scope _settings(-zcutplaneposition)] \
2140	-foreground blue3 -font "Arial 9 bold"
2141	} {
2142	usual
2143	ignore -borderwidth -highlightthickness -foreground -font
2144	}
2145	$itk_component(zposition) set 50
2146	$itk_component(zposition) configure -state disabled
2147	Rappture::Tooltip::for $itk_component(zposition) \
2148	"@[itcl::code $this Slice tooltip z]"
2149
2150	blt::table $inner \
2151	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
2152	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
2153	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
2154	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
2155	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
2156	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2157	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2158	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
2159	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
2160	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
2161	6,1 $inner.xval -fill y -rspan 4 \
2162	6,2 $inner.yval -fill y -rspan 4 \
2163	6,3 $inner.zval -fill y -rspan 4 \
2164
2165
2166	blt::table configure $inner r* c* -resize none
2167	blt::table configure $inner r9 c4 -resize expand
2168	}
2169
2170	#
2171	# camera --
2172	#
2173	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2174	switch -- $option {
2175	"show" {
2176	puts [array get _view]
2177	}
2178	"set" {
2179	set what [lindex $args 0]
2180	set x $_view($what)
2181	set code [catch { string is double $x } result]
2182	if { $code != 0 \|\| !$result } {
2183	return
2184	}
2185	switch -- $what {
2186	"-ortho" {
2187	if {$_view($what)} {
2188	SendCmd "camera mode ortho"
2189	} else {
2190	SendCmd "camera mode persp"
2191	}
2192	}
2193	"-xpan" - "-ypan" {
2194	PanCamera
2195	}
2196	"-qx" - "-qy" - "-qz" - "-qw" {
2197	set q [ViewToQuaternion]
2198	$_arcball quaternion $q
2199	EventuallyRotate $q
2200	}
2201	"-zoom" {
2202	SendCmd "camera zoom $_view($what)"
2203	}
2204	}
2205	}
2206	}
2207	}
2208
2209	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2210	set bytes ""
2211	foreach dataobj [get] {
2212	foreach cname [$dataobj components] {
2213	set tag $dataobj-$cname
2214	set contents [$dataobj vtkdata $cname]
2215	append bytes "$contents\n"
2216	}
2217	}
2218	return [list .vtk $bytes]
2219	}
2220
2221	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2222	if { [image width $_image(download)] > 0 &&
2223	[image height $_image(download)] > 0 } {
2224	set bytes [$_image(download) data -format "jpeg -quality 100"]
2225	set bytes [Rappture::encoding::decode -as b64 $bytes]
2226	return [list .jpg $bytes]
2227	}
2228	return ""
2229	}
2230
2231	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2232	Rappture::Balloon $popup \
2233	-title "[Rappture::filexfer::label downloadWord] as..."
2234	set inner [$popup component inner]
2235	label $inner.summary -text "" -anchor w
2236	radiobutton $inner.vtk_button -text "VTK data file" \
2237	-variable [itcl::scope _downloadPopup(format)] \
2238	-font "Arial 9 " \
2239	-value vtk
2240	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2241	radiobutton $inner.image_button -text "Image File" \
2242	-variable [itcl::scope _downloadPopup(format)] \
2243	-font "Arial 9 " \
2244	-value image
2245	Rappture::Tooltip::for $inner.image_button \
2246	"Save as digital image."
2247
2248	button $inner.ok -text "Save" \
2249	-highlightthickness 0 -pady 2 -padx 3 \
2250	-command $command \
2251	-compound left \
2252	-image [Rappture::icon download]
2253
2254	button $inner.cancel -text "Cancel" \
2255	-highlightthickness 0 -pady 2 -padx 3 \
2256	-command [list $popup deactivate] \
2257	-compound left \
2258	-image [Rappture::icon cancel]
2259
2260	blt::table $inner \
2261	0,0 $inner.summary -cspan 2 \
2262	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2263	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2264	4,1 $inner.cancel -width .9i -fill y \
2265	4,0 $inner.ok -padx 2 -width .9i -fill y
2266	blt::table configure $inner r3 -height 4
2267	blt::table configure $inner r4 -pady 4
2268	raise $inner.image_button
2269	$inner.vtk_button invoke
2270	return $inner
2271	}
2272
2273	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2274	# Parse style string.
2275	set tag $dataobj-$comp
2276	array set style {
2277	-color BCGYR
2278	-cutplaneedges 0
2279	-cutplanelighting 1
2280	-cutplaneopacity 1.0
2281	-cutplanepreinterp 1
2282	-cutplanesvisible 0
2283	-cutplanewireframe 0
2284	-edgecolor black
2285	-edges 0
2286	-isosurfacevisible 1
2287	-levels 10
2288	-lighting 1
2289	-linewidth 1.0
2290	-opacity 0.6
2291	-outline 0
2292	-wireframe 0
2293	-xcutplaneposition 50
2294	-xcutplanevisible 1
2295	-ycutplaneposition 50
2296	-ycutplanevisible 1
2297	-zcutplaneposition 50
2298	-zcutplanevisible 1
2299	}
2300	array set style [$dataobj style $comp]
2301	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2302	set style(-opacity) 1.0
2303	}
2304
2305	# This is too complicated. We want to set the colormap, number of
2306	# isolines and opacity for the dataset. They can be the default values,
2307	# the style hints loaded with the dataset, or set by user controls. As
2308	# datasets get loaded, they first use the defaults that are overidden
2309	# by the style hints. If the user changes the global controls, then that
2310	# overrides everything else. I don't know what it means when global
2311	# controls are specified as style hints by each dataset. It complicates
2312	# the code to handle aberrant cases.
2313
2314	if { $_changed(-isosurfaceedges) } {
2315	set style(-edges) $_settings(-isosurfaceedges)
2316	}
2317	if { $_changed(-isosurfacelighting) } {
2318	set style(-lighting) $_settings(-isosurfacelighting)
2319	}
2320	if { $_changed(-isosurfaceopacity) } {
2321	set style(-opacity) $_settings(-isosurfaceopacity)
2322	}
2323	if { $_changed(-isosurfacewireframe) } {
2324	set style(-wireframe) $_settings(-isosurfacewireframe)
2325	}
2326	if { $_changed(-numcontours) } {
2327	set style(-levels) $_settings(-numcontours)
2328	}
2329	if { $_changed(-colormap) } {
2330	set style(-color) $_settings(-colormap)
2331	}
2332	if { $_currentColormap == "" } {
2333	SetCurrentColormap $style(-color)
2334	$itk_component(colormap) value $style(-color)
2335	}
2336	if { $_contourList(numLevels) != $style(-levels) } {
2337	if { [llength $style(-levels)] > 1 } {
2338	set _contourList(reqValues) [lsort -real $style(-levels)]
2339	} else {
2340	set _settings(-numcontours) $style(-levels)
2341	$itk_component(numcontours) value $style(-levels)
2342	set _contourList(numLevels) $style(-levels)
2343	}
2344	EventuallyChangeContourLevels
2345	}
2346	foreach setting {-outline -isosurfacevisible -cutplanesvisible \
2347	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
2348	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
2349	-cutplaneedges -cutplanelighting -cutplaneopacity \
2350	-cutplanepreinterp -cutplanewireframe} {
2351	if {$_changed($setting)} {
2352	# User-modified UI setting overrides style
2353	set style($setting) $_settings($setting)
2354	} else {
2355	# Set UI control to style setting (tool provided or default)
2356	set _settings($setting) $style($setting)
2357	}
2358	}
2359
2360	SendCmd "cutplane add $tag"
2361	SendCmd "cutplane color [Color2RGB $itk_option(-plotforeground)] $tag"
2362	foreach axis {x y z} {
2363	set pos [expr $style(-${axis}cutplaneposition) * 0.01]
2364	set visible $style(-${axis}cutplanevisible)
2365	SendCmd "cutplane slice $axis $pos $tag"
2366	SendCmd "cutplane axis $axis $visible $tag"
2367	}
2368	SendCmd "cutplane edges $style(-cutplaneedges) $tag"
2369	SendCmd "cutplane lighting $style(-cutplanelighting) $tag"
2370	SendCmd "cutplane opacity $style(-cutplaneopacity) $tag"
2371	SendCmd "cutplane preinterp $style(-cutplanepreinterp) $tag"
2372	SendCmd "cutplane wireframe $style(-cutplanewireframe) $tag"
2373	SendCmd "cutplane visible $style(-cutplanesvisible) $tag"
2374
2375	SendCmd "outline add $tag"
2376	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2377	SendCmd "outline visible $style(-outline) $tag"
2378
2379	GenerateContourList
2380	SendCmd [list contour3d add contourlist $_contourList(values) $tag]
2381	SendCmd "contour3d visible $style(-isosurfacevisible) $tag"
2382	SendCmd "contour3d edges $style(-edges) $tag"
2383	set _settings(-isosurfaceedges) $style(-edges)
2384	#SendCmd "contour3d color [Color2RGB $style(-color)] $tag"
2385	SendCmd "contour3d lighting $style(-lighting) $tag"
2386	set _settings(-isosurfacelighting) $style(-lighting)
2387	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2388	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2389	SendCmd "contour3d opacity $style(-opacity) $tag"
2390	set _settings(-isosurfaceopacity) $style(-opacity)
2391	SetCurrentColormap $style(-color)
2392	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2393	set _settings(-isosurfacewireframe) $style(-wireframe)
2394	}
2395
2396	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2397	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2398	return 0
2399	}
2400	return 1
2401	}
2402
2403	#
2404	# EnterLegend --
2405	#
2406	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2407	SetLegendTip $x $y
2408	}
2409
2410	#
2411	# MotionLegend --
2412	#
2413	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2414	Rappture::Tooltip::tooltip cancel
2415	set c $itk_component(view)
2416	set cw [winfo width $c]
2417	set ch [winfo height $c]
2418	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2419	SetLegendTip $x $y
2420	}
2421	}
2422
2423	#
2424	# LeaveLegend --
2425	#
2426	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2427	Rappture::Tooltip::tooltip cancel
2428	.rappturetooltip configure -icon ""
2429	}
2430
2431	# ----------------------------------------------------------------------
2432	# USAGE: LegendB1Motion press <x> <y>
2433	# USAGE: LegendB1Motion motion <x> <y>
2434	# USAGE: LegendB1Motion release <x> <y>
2435	#
2436	# Manage actions for Button 1 presses that happen over the legend.
2437	# Pressing mouse Button 1 on the legend sends a command to the
2438	# visualization server to show a specific isosurface.
2439	# ----------------------------------------------------------------------
2440	itcl::body Rappture::VtkIsosurfaceViewer::LegendB1Motion { status x y } {
2441
2442	switch -- $status {
2443	"press" {
2444	DisableMouseRotationBindings
2445	LegendProbeSingleContour $x $y
2446	}
2447	"motion" {
2448	DisableMouseRotationBindings
2449	LegendProbeSingleContour $x $y
2450	}
2451	"release" {
2452	AdjustSetting -range
2453	SetupMouseRotationBindings
2454	}
2455	default {
2456	error "bad option \"$option\": should be one of press, motion, release."
2457	}
2458	}
2459	}
2460
2461	# ----------------------------------------------------------------------
2462	# USAGE: LegendPointToValue <x> <y>
2463	#
2464	# Convert an x,y point on the legend to a numeric isosurface value.
2465	# ----------------------------------------------------------------------
2466	itcl::body Rappture::VtkIsosurfaceViewer::LegendPointToValue { x y } {
2467
2468	set fname $_curFldName
2469
2470	set font "Arial 8"
2471	set lineht [font metrics $font -linespace]
2472
2473	set ih [image height $_image(legend)]
2474	set iy [expr $y - ($lineht + 2)]
2475
2476	# Compute the value of the point
2477	if { [info exists _limits($fname)] } {
2478	if { $_settings(-customrange) } {
2479	set vmin [$itk_component(min) value]
2480	set vmax [$itk_component(max) value]
2481	} else {
2482	foreach { vmin vmax } $_limits($fname) break
2483	}
2484	set t [expr 1.0 - (double($iy) / double($ih-1))]
2485	set value [expr $t * ($vmax - $vmin) + $vmin]
2486	} else {
2487	set value 0.0
2488	}
2489	return $value
2490	}
2491
2492	# ----------------------------------------------------------------------
2493	# USAGE: LegendProbeSingleContour <x> <y>
2494	#
2495	# Calculate the isosurface value for the x,y point and send a commands
2496	# to the visualization server to show that isosurface.
2497	# ----------------------------------------------------------------------
2498	itcl::body Rappture::VtkIsosurfaceViewer::LegendProbeSingleContour { x y } {
2499
2500	set value [LegendPointToValue $x $y]
2501	SendCmd [list contour3d contourlist $value]
2502	}
2503
2504	#
2505	# SetLegendTip --
2506	#
2507	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2508	set fname $_curFldName
2509	set c $itk_component(view)
2510	set w [winfo width $c]
2511	set h [winfo height $c]
2512
2513	set font "Arial 8"
2514	set lineht [font metrics $font -linespace]
2515
2516	set ih [image height $_image(legend)]
2517	set iy [expr $y - ($lineht + 2)]
2518
2519	if { [string match "component*" $fname] } {
2520	set title ""
2521	} else {
2522	if { [info exists _fields($fname)] } {
2523	foreach { title units } $_fields($fname) break
2524	if { $units != "" } {
2525	set title [format "%s (%s)" $title $units]
2526	}
2527	} else {
2528	set title $fname
2529	}
2530	}
2531	# If there's a legend title, increase the offset by the line height.
2532	if { $title != "" } {
2533	incr iy -$lineht
2534	}
2535	# Make a swatch of the selected color
2536	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2537	return
2538	}
2539	if { ![info exists _image(swatch)] } {
2540	set _image(swatch) [image create photo -width 24 -height 24]
2541	}
2542	set color [eval format "\#%02x%02x%02x" $pixel]
2543	$_image(swatch) put black -to 0 0 23 23
2544	$_image(swatch) put $color -to 1 1 22 22
2545	.rappturetooltip configure -icon $_image(swatch)
2546
2547	# Compute the value of the point
2548	set value [LegendPointToValue $x $y]
2549
2550	# Setup the location of the tooltip
2551	set tx [expr $x + 15]
2552	set ty [expr $y - 5]
2553
2554	# Setup the text for the tooltip
2555	if { [info exists _isolines($y)] } {
2556	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2557	} else {
2558	Rappture::Tooltip::text $c [format "$title %g" $value]
2559	}
2560
2561	# Show the tooltip
2562	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2563	}
2564
2565	# ----------------------------------------------------------------------
2566	# USAGE: Slice move x\|y\|z <newval>
2567	#
2568	# Called automatically when the user drags the slider to move the
2569	# cut plane that slices 3D data. Gets the current value from the
2570	# slider and moves the cut plane to the appropriate point in the
2571	# data set.
2572	# ----------------------------------------------------------------------
2573	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2574	switch -- $option {
2575	"move" {
2576	set axis [lindex $args 0]
2577	set newval [lindex $args 1]
2578	if {[llength $args] != 2} {
2579	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2580	}
2581	set newpos [expr {0.01*$newval}]
2582	SendCmd "cutplane slice $axis $newpos"
2583	}
2584	"tooltip" {
2585	set axis [lindex $args 0]
2586	set val [$itk_component(${axis}position) get]
2587	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2588	}
2589	default {
2590	error "bad option \"$option\": should be axis, move, or tooltip"
2591	}
2592	}
2593	}
2594
2595	#
2596	# ReceiveLegend --
2597	#
2598	# Invoked automatically whenever the "legend" command comes in from
2599	# the rendering server. Indicates that binary image data with the
2600	# specified <size> will follow.
2601	#
2602	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2603	# puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2604	set _title $title
2605	regsub {\(mag\)} $title "" _title
2606	if { [IsConnected] } {
2607	set bytes [ReceiveBytes $size]
2608	if { ![info exists _image(legend)] } {
2609	set _image(legend) [image create photo]
2610	}
2611	$_image(legend) configure -data $bytes
2612	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2613	if { [catch {DrawLegend} errs] != 0 } {
2614	global errorInfo
2615	puts stderr "errs=$errs errorInfo=$errorInfo"
2616	}
2617	}
2618	}
2619
2620	#
2621	# DrawLegend --
2622	#
2623	# Draws the legend on the canvas on the right side of the plot area.
2624	#
2625	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2626	set fname $_curFldName
2627	set c $itk_component(view)
2628	set w [winfo width $c]
2629	set h [winfo height $c]
2630	set font "Arial 8"
2631	set lineht [font metrics $font -linespace]
2632
2633	if { [string match "component*" $fname] } {
2634	set title ""
2635	} else {
2636	if { [info exists _fields($fname)] } {
2637	foreach { title units } $_fields($fname) break
2638	if { $units != "" } {
2639	set title [format "%s (%s)" $title $units]
2640	}
2641	} else {
2642	set title $fname
2643	}
2644	}
2645	set x [expr $w - 2]
2646	if { !$_settings(-legendvisible) } {
2647	$c delete legend
2648	return
2649	}
2650	if { [$c find withtag "legend"] == "" } {
2651	set y 2
2652	# If there's a legend title, create a text item for the title.
2653	$c create text $x $y \
2654	-anchor ne \
2655	-fill $itk_option(-plotforeground) -tags "title legend" \
2656	-font $font
2657	if { $title != "" } {
2658	incr y $lineht
2659	}
2660	$c create text $x $y \
2661	-anchor ne \
2662	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2663	-font $font
2664	incr y $lineht
2665	$c create image $x $y \
2666	-anchor ne \
2667	-image $_image(legend) -tags "colormap legend"
2668	$c create rectangle $x $y 1 1 \
2669	-fill "" -outline "" -tags "sensor legend"
2670	$c create text $x [expr {$h-2}] \
2671	-anchor se \
2672	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2673	-font $font
2674	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2675	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2676	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2677	# $c bind sensor <ButtonPress-1> [itcl::code $this LegendB1Motion press %x %y]
2678	# $c bind sensor <B1-Motion> [itcl::code $this LegendB1Motion motion %x %y]
2679	# $c bind sensor <ButtonRelease-1> [itcl::code $this LegendB1Motion release %x %y]
2680
2681	}
2682	$c delete isoline
2683	set x2 $x
2684	set iw [image width $_image(legend)]
2685	set ih [image height $_image(legend)]
2686	set x1 [expr $x2 - ($iw*12)/10]
2687	set color $_settings(-isolinecolor)
2688	# Draw the isolines on the legend.
2689	array unset _isolines
2690	if { $color != "none" && [info exists _limits($_curFldName)] &&
2691	$_settings(-numcontours) > 0 } {
2692
2693	if { $_settings(-customrange) } {
2694	set vmin [$itk_component(min) value]
2695	set vmax [$itk_component(max) value]
2696	} else {
2697	foreach { vmin vmax } $_limits($_curFldName) break
2698	}
2699	set range [expr double($vmax - $vmin)]
2700	if { $range <= 0.0 } {
2701	set range 1.0; # Min is greater or equal to max.
2702	}
2703	set tags "isoline legend"
2704	set offset [expr 2 + $lineht]
2705	if { $title != "" } {
2706	incr offset $lineht
2707	}
2708	foreach value $_contourList(values) {
2709	set norm [expr 1.0 - (($value - $vmin) / $range)]
2710	set y1 [expr int(round(($norm * $ih) + $offset))]
2711	for { set off 0 } { $off < 3 } { incr off } {
2712	set _isolines([expr $y1 + $off]) $value
2713	set _isolines([expr $y1 - $off]) $value
2714	}
2715	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2716	}
2717	}
2718
2719	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2720	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2721	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2722	# Reset the item coordinates according the current size of the plot.
2723	$c itemconfigure title -text $title
2724	if { [info exists _limits($_curFldName)] } {
2725	if { $_settings(-customrange) } {
2726	set vmin [$itk_component(min) value]
2727	set vmax [$itk_component(max) value]
2728	} else {
2729	foreach { vmin vmax } $_limits($_curFldName) break
2730	}
2731	$c itemconfigure vmin -text [format %g $vmin]
2732	$c itemconfigure vmax -text [format %g $vmax]
2733	}
2734	set y 2
2735	# If there's a legend title, move the title to the correct position
2736	if { $title != "" } {
2737	$c itemconfigure title -text $title
2738	$c coords title $x $y
2739	incr y $lineht
2740	$c raise title
2741	}
2742	$c coords vmax $x $y
2743	incr y $lineht
2744	$c coords colormap $x $y
2745	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2746	$c raise sensor
2747	$c coords vmin $x [expr {$h - 2}]
2748
2749	$c bind vmin <ButtonPress> [itcl::code $this LegendRangeAction popup vmin]
2750	$c bind vmin <Enter> [itcl::code $this LegendRangeAction enter vmin]
2751	$c bind vmin <Leave> [itcl::code $this LegendRangeAction leave vmin]
2752
2753	$c bind vmax <ButtonPress> [itcl::code $this LegendRangeAction popup vmax]
2754	$c bind vmax <Enter> [itcl::code $this LegendRangeAction enter vmax]
2755	$c bind vmax <Leave> [itcl::code $this LegendRangeAction leave vmax]
2756	}
2757
2758	# ----------------------------------------------------------------------
2759	# USAGE: LegendTitleAction post
2760	# USAGE: LegendTitleAction enter
2761	# USAGE: LegendTitleAction leave
2762	# USAGE: LegendTitleAction save
2763	#
2764	# Used internally to handle the dropdown list for the fields menu combobox.
2765	# The post option is invoked when the field title is pressed to launch the
2766	# dropdown. The enter option is invoked when the user mouses over the field
2767	# title. The leave option is invoked when the user moves the mouse away
2768	# from the field title. The save option is invoked whenever there is a
2769	# selection from the list, to alert the visualization server.
2770	#
2771	# ----------------------------------------------------------------------
2772	itcl::body Rappture::VtkIsosurfaceViewer::LegendTitleAction {option} {
2773	set c $itk_component(view)
2774	switch -- $option {
2775	post {
2776	foreach { x1 y1 x2 y2 } [$c bbox title] break
2777	set cw [winfo width $itk_component(view)]
2778	set mw [winfo reqwidth $itk_component(fieldmenu)]
2779	set x1 [expr $cw - $mw]
2780	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2781	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2782	tk_popup $itk_component(fieldmenu) $x $y
2783	}
2784	enter {
2785	$c itemconfigure title -fill red
2786	}
2787	leave {
2788	$c itemconfigure title -fill $itk_option(-plotforeground)
2789	}
2790	save {
2791	$itk_component(field) value $_curFldLabel
2792	AdjustSetting -field
2793	}
2794	default {
2795	error "bad option \"$option\": should be post, enter, leave, save"
2796	}
2797	}
2798	}
2799
2800	# ----------------------------------------------------------------------
2801	# USAGE: LegendRangeValidate <widget> <which> <value>
2802	#
2803	# Used internally to validate a legend range min/max value.
2804	# Returns a boolean value telling if <value> was accepted (1) or rejected (0)
2805	# If the value is rejected, a tooltip/warning message is popped up
2806	# near the widget that asked for the validation, specified by <widget>
2807	#
2808	# <widget> is the widget where a tooltip/warning message should show up on
2809	# <which> is either "vmin" or "vmax".
2810	# <value> is the value to be validated.
2811	#
2812	# ----------------------------------------------------------------------
2813	itcl::body Rappture::VtkIsosurfaceViewer::LegendRangeValidate {widget which value} {
2814
2815	#check for a valid value
2816	if {[string is double $value] != 1} {
2817	set msg "should be valid number"
2818	if {$widget != ""} {
2819	Rappture::Tooltip::cue $widget $msg
2820	} else {
2821	# error "bad value \"$value\": $msg"
2822	error $msg
2823	}
2824	return 0
2825	}
2826
2827	switch -- $which {
2828	vmin {
2829	# check for min > max
2830	if {$value > [$itk_component(max) value]} {
2831	set msg "min > max, change max first"
2832	if {$widget != ""} {
2833	Rappture::Tooltip::cue $widget $msg
2834	} else {
2835	# error "bad value \"$value\": $msg"
2836	error $msg
2837	}
2838	return 0
2839	}
2840	}
2841	vmax {
2842	# check for max < min
2843	if {$value < [$itk_component(min) value]} {
2844	set msg "max < min, change min first"
2845	if {$widget != ""} {
2846	Rappture::Tooltip::cue $widget $msg
2847	} else {
2848	# error "bad value \"$value\": $msg"
2849	error $msg
2850	}
2851	return 0
2852	}
2853	}
2854	default {
2855	error "bad option \"$which\": should be vmin, vmax"
2856	}
2857	}
2858	}
2859
2860	itcl::body Rappture::VtkIsosurfaceViewer::MouseOver2Which {} {
2861	switch -- $_mouseOver {
2862	vmin {
2863	set which min
2864	}
2865	vmax {
2866	set which max
2867	}
2868	default {
2869	error "bad _mouseOver \"$_mouseOver\": should be vmin, vmax"
2870	}
2871	}
2872	return $which
2873	}
2874
2875	# ----------------------------------------------------------------------
2876	# USAGE: LegendRangeAction enter <which>
2877	# USAGE: LegendRangeAction leave <which>
2878	#
2879	# USAGE: LegendRangeAction popup <which>
2880	# USAGE: LegendRangeAction activate
2881	# USAGE: LegendRangeAction validate <value>
2882	# USAGE: LegendRangeAction apply <value>
2883	#
2884	# Used internally to handle the mouseover and popup entry for the field range
2885	# inputs. The enter option is invoked when the user moves the mouse over the
2886	# min or max field range. The leave option is invoked when the user moves the
2887	# mouse away from the min or max field range. The popup option is invoked when
2888	# the user click's on a field range. The popup option stores internally which
2889	# widget is requesting a popup ( in the _mouseOver variable) and calls the
2890	# activate command of the widget. The widget's activate command calls back to
2891	# this method to get the xywh dimensions of the popup editor. After the user
2892	# changes focus or sets the value in the editor, the editor calls this methods
2893	# validate and apply options to set the value.
2894	#
2895	# ----------------------------------------------------------------------
2896	itcl::body Rappture::VtkIsosurfaceViewer::LegendRangeAction {option args} {
2897	set c $itk_component(view)
2898
2899	switch -- $option {
2900	enter {
2901	set which [lindex $args 0]
2902	$c itemconfigure $which -fill red
2903	}
2904	leave {
2905	set which [lindex $args 0]
2906	$c itemconfigure $which -fill $itk_option(-plotforeground)
2907	}
2908	popup {
2909	DisableMouseRotationBindings
2910	set which [lindex $args 0]
2911	set _mouseOver $which
2912	$itk_component(editor) activate
2913	}
2914	activate {
2915	foreach { x1 y1 x2 y2 } [$c bbox $_mouseOver] break
2916	set which [MouseOver2Which]
2917	set info(text) [$itk_component($which) value]
2918	set info(x) [expr $x1 + [winfo rootx $c]]
2919	set info(y) [expr $y1 + [winfo rooty $c]]
2920	set info(w) [expr $x2 - $x1]
2921	set info(h) [expr $y2 - $y1]
2922	return [array get info]
2923	}
2924	validate {
2925	if {[llength $args] != 1} {
2926	error "wrong # args: should be \"editor validate value\""
2927	}
2928
2929	set value [lindex $args 0]
2930	if {[LegendRangeValidate $itk_component(editor) $_mouseOver $value] == 0} {
2931	return 0
2932	}
2933
2934	# value was good, apply it
2935	# reset the mouse rotation bindings
2936	SetupMouseRotationBindings
2937	}
2938	apply {
2939	if {[llength $args] != 1} {
2940	error "wrong # args: should be \"editor apply value\""
2941	}
2942	set value [string trim [lindex $args 0]]
2943
2944	set which [MouseOver2Which]
2945
2946	# only set custom range if value changed
2947	if {[$itk_component($which) value] != $value} {
2948	# set the flag stating the custom range came from the legend
2949	# change the value in the gauge
2950	# turn on crange to enable the labels and gauges
2951	# call AdjustSetting -range (inside ToggleCustomRange)
2952	# to update drawing and legend
2953	set _customRangeClick 0
2954	$itk_component($which) value $value
2955	$itk_component(crange) select
2956	ToggleCustomRange
2957	}
2958	}
2959	default {
2960	error "bad option \"$option\": should be enter, leave, activate, validate, apply"
2961	}
2962	}
2963	}
2964
2965	# ----------------------------------------------------------------------
2966	# USAGE: ToggleCustomRange
2967	#
2968	# Called whenever the custom range is turned on or off. Used to save
2969	# the custom min and custom max set by the user. When the -customrange
2970	# setting is turned on, the range min and range max gauges are set
2971	# with the last value set by the user, or the default range if no
2972	# previous min and max were set.
2973	#
2974	# When the custom range is turned on, we check how it was turned on
2975	# by querying _customRangeClick. If the variable is 1, this means
2976	# the user clicked the crange checkbutton and we should pull the
2977	# custom range values from our backup variables. If the variable is 0,
2978	# the custom range was enabled through the user manipulating the
2979	# min and max value in the legend.
2980	#
2981	# ----------------------------------------------------------------------
2982	itcl::body Rappture::VtkIsosurfaceViewer::ToggleCustomRange {args} {
2983	if { ! $_settings(-customrange) } {
2984	# custom range was turned off
2985
2986	# disable the min/max labels and gauge widgets
2987	$itk_component(l_min) configure -state disabled
2988	$itk_component(min) configure -state disabled
2989	$itk_component(l_max) configure -state disabled
2990	$itk_component(max) configure -state disabled
2991
2992	# backup the custom range
2993	set _settings(-customrangemin) [$itk_component(min) value]
2994	set _settings(-customrangemax) [$itk_component(max) value]
2995
2996	# set the gauges to dataset's min and max
2997	foreach { vmin vmax } $_limits($_curFldName) break
2998	SetMinMaxGauges $vmin $vmax
2999	} else {
3000	# custom range was turned on
3001
3002	# enable the min/max labels and gauge widgets
3003	$itk_component(l_min) configure -state normal
3004	$itk_component(min) configure -state normal
3005	$itk_component(l_max) configure -state normal
3006	$itk_component(max) configure -state normal
3007
3008	# if the custom range is being turned on by clicking the
3009	# checkbox, restore the min and max gauges from the backup
3010	# variables. otherwise, new values for the min and max
3011	# widgets will be set later from the legend's editor.
3012	if { $_customRangeClick } {
3013	SetMinMaxGauges $_settings(-customrangemin) $_settings(-customrangemax)
3014	}
3015
3016	# reset the click flag
3017	set _customRangeClick 1
3018	}
3019	AdjustSetting -range
3020	}
3021
3022	# ----------------------------------------------------------------------
3023	# USAGE: SetMinMaxGauges <min> <max>
3024	#
3025	# Set the min and max gauges in the correct order, avoiding the
3026	# error where you try to set the min > max before updating the max or
3027	# set the max < min before updating the min.
3028	#
3029	# There are five range cases to consider with our current range validation.
3030	# For example:
3031	# [2,3] -> [0,1] : update min first, max last
3032	# [2,3] -> [4,5] : update max first, min last
3033	# [2,3] -> [0,2.5] : update min or max first
3034	# [2,3] -> [2.5,5] : update min or max first
3035	# [2,3] -> [2.25,2.75] : update min or max first
3036	#
3037	# In 4 of the cases we can update min first and max last, so we only
3038	# need to check the case where old max < new min, where we update
3039	# max first and min last.
3040	# ----------------------------------------------------------------------
3041	itcl::body Rappture::VtkIsosurfaceViewer::SetMinMaxGauges {min max} {
3042
3043	if { [$itk_component(max) value] < $min} {
3044	# old max < new min
3045	# shift range toward right
3046	# extend max first, then update min
3047	$itk_component(max) value $max
3048	$itk_component(min) value $min
3049	} else {
3050	# extend min first, then update max
3051	$itk_component(min) value $min
3052	$itk_component(max) value $max
3053	}
3054	}
3055
3056	#
3057	# SetCurrentColormap --
3058	#
3059	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
3060	# Keep track of the colormaps that we build.
3061	if { ![info exists _colormaps($name)] } {
3062	BuildColormap $name
3063	set _colormaps($name) 1
3064	}
3065	set _currentColormap $name
3066	SendCmd "contour3d colormap $_currentColormap"
3067	SendCmd "cutplane colormap $_currentColormap"
3068	}
3069
3070	#
3071	# BuildColormap --
3072	#
3073	# Build the designated colormap on the server.
3074	#
3075	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
3076	set cmap [ColorsToColormap $name]
3077	if { [llength $cmap] == 0 } {
3078	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
3079	}
3080	set amap "0.0 1.0 1.0 1.0"
3081	SendCmd "colormap add $name { $cmap } { $amap }"
3082	}
3083
3084	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
3085	array set positions {
3086	front "1 0 0 0"
3087	back "0 0 1 0"
3088	left "0.707107 0 -0.707107 0"
3089	right "0.707107 0 0.707107 0"
3090	top "0.707107 -0.707107 0 0"
3091	bottom "0.707107 0.707107 0 0"
3092	}
3093	foreach name { -qw -qx -qy -qz } value $positions($side) {
3094	set _view($name) $value
3095	}
3096	set q [ViewToQuaternion]
3097	$_arcball quaternion $q
3098	SendCmd "camera orient $q"
3099	SendCmd "camera reset"
3100	set _view(-xpan) 0
3101	set _view(-ypan) 0
3102	set _view(-zoom) 1.0
3103	}
3104
3105	itcl::body Rappture::VtkIsosurfaceViewer::GenerateContourList {} {
3106	if { ![info exists _limits($_curFldName)] } {
3107	puts stderr "no _curFldName"
3108	return ""
3109	}
3110	if { $_contourList(numLevels) < 1 } {
3111	# There are tools that set 0 levels to get cutplanes only
3112	#puts stderr "numLevels < 1"
3113	return ""
3114	}
3115	if { [llength $_contourList(reqValues)] > 1 } {
3116	set values $_contourList(reqValues)
3117	} else {
3118	# if custom range has been set, use the custom min and max
3119	# to generate contour list values
3120	if { $_settings(-customrange) } {
3121	set vmin [$itk_component(min) value]
3122	set vmax [$itk_component(max) value]
3123	} else {
3124	# use the field limits to calculate the contour list values
3125	foreach { vmin vmax } $_limits($_curFldName) break
3126	}
3127
3128	set v [blt::vector create \#auto]
3129	$v seq $vmin $vmax [expr $_contourList(numLevels)+2]
3130	$v delete end 0
3131	set values [$v range 0 end]
3132	blt::vector destroy $v
3133	}
3134	set _contourList(values) $values
3135	}
3136
3137	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentFieldName { dataobj } {
3138	set _first $dataobj
3139	$itk_component(field) choices delete 0 end
3140	$itk_component(fieldmenu) delete 0 end
3141	array unset _fields
3142	set _curFldName ""
3143	foreach cname [$_first components] {
3144	foreach fname [$_first fieldnames $cname] {
3145	if { [info exists _fields($fname)] } {
3146	continue
3147	}
3148	foreach { label units components } \
3149	[$_first fieldinfo $fname] break
3150	$itk_component(field) choices insert end "$fname" "$label"
3151	$itk_component(fieldmenu) add radiobutton -label "$label" \
3152	-value $label -variable [itcl::scope _curFldLabel] \
3153	-selectcolor red \
3154	-activebackground $itk_option(-plotbackground) \
3155	-activeforeground $itk_option(-plotforeground) \
3156	-font "Arial 8" \
3157	-command [itcl::code $this LegendTitleAction save]
3158	set _fields($fname) [list $label $units $components]
3159	if { $_curFldName == "" } {
3160	set _curFldName $fname
3161	set _curFldLabel $label
3162	}
3163	}
3164	}
3165	$itk_component(field) value $_curFldLabel
3166	if { $_settings(-customrange) } {
3167	set limits [list [$itk_component(min) value] [$itk_component(max) value]]
3168	SendCmd "dataset maprange explicit $limits $_curFldName"
3169	if { $limits != $_currentLimits } {
3170	set _currentLimits $limits
3171	EventuallyChangeContourLevels
3172	}
3173	} else {
3174	if { ![info exists _limits($_curFldName)] } {
3175	SendCmd "dataset maprange all"
3176	} else {
3177	set limits $_limits($_curFldName)
3178	SendCmd "dataset maprange explicit $limits $_curFldName"
3179	if { $limits != $_currentLimits } {
3180	set _currentLimits $limits
3181	EventuallyChangeContourLevels
3182	}
3183	}
3184	}
3185	}

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