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source: trunk/gui/scripts/vtkisosurfaceviewer.tcl @ 4096

Last change on this file since 4096 was 4075, checked in by ldelgass, 10 years ago
Fix comment spelling
File size: 86.1 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2
3	# ----------------------------------------------------------------------
4	# COMPONENT: vtkisolinesviewer - Vtk 3D contour object viewer
5	#
6	# It connects to the Vtk server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2005 Purdue Research Foundation
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	#package require Img
18
19	option add *VtkIsosurfaceViewer.width 4i widgetDefault
20	option add VtkIsosurfaceViewercursor crosshair widgetDefault
21	option add *VtkIsosurfaceViewer.height 4i widgetDefault
22	option add *VtkIsosurfaceViewer.foreground black widgetDefault
23	option add *VtkIsosurfaceViewer.controlBackground gray widgetDefault
24	option add *VtkIsosurfaceViewer.controlDarkBackground #999999 widgetDefault
25	option add *VtkIsosurfaceViewer.plotBackground black widgetDefault
26	option add *VtkIsosurfaceViewer.plotForeground white widgetDefault
27	option add *VtkIsosurfaceViewer.font \
28	--helvetica-medium-r-normal--12-* widgetDefault
29
30	# must use this name -- plugs into Rappture::resources::load
31	proc VtkIsosurfaceViewer_init_resources {} {
32	Rappture::resources::register \
33	vtkvis_server Rappture::VtkIsosurfaceViewer::SetServerList
34	}
35
36	itcl::class Rappture::VtkIsosurfaceViewer {
37	inherit Rappture::VisViewer
38
39	itk_option define -plotforeground plotForeground Foreground ""
40	itk_option define -plotbackground plotBackground Background ""
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits { colormap }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method InitSettings { args }
73	protected method Pan {option x y}
74	protected method Pick {x y}
75	protected method Rebuild {}
76	protected method ReceiveDataset { args }
77	protected method ReceiveImage { args }
78	protected method ReceiveLegend { colormap title vmin vmax size }
79	protected method Rotate {option x y}
80	protected method Zoom {option}
81
82	# The following methods are only used by this class.
83	private method BuildAxisTab {}
84	private method BuildCameraTab {}
85	private method BuildColormap { name }
86	private method BuildCutplaneTab {}
87	private method BuildDownloadPopup { widget command }
88	private method BuildIsosurfaceTab {}
89	private method Combo { option }
90	private method DrawLegend {}
91	private method EnterLegend { x y }
92	private method EventuallyResize { w h }
93	private method EventuallyRotate { q }
94	private method EventuallyRequestLegend {}
95	private method EventuallySetCutplane { axis args }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetLegendTip { x y }
104	private method SetObjectStyle { dataobj comp }
105	private method Slice {option args}
106	private method SetCurrentColormap { color }
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109
110	private variable _arcball ""
111
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119	# The name of the current colormap used. The colormap is global to all
120	# heightmaps displayed.
121	private variable _currentColormap ""
122	private variable _currentNumContours -1
123	private variable _currentOpacity ""
124
125	private variable _dataset2style ;# maps dataobj-component to transfunc
126
127	private variable _click ; # info used for rotate operations
128	private variable _limits ; # autoscale min/max for all axes
129	private variable _view ; # view params for 3D view
130	private variable _settings
131	private variable _style; # Array of current component styles.
132	private variable _changed
133	private variable _initialStyle; # Array of initial component styles.
134	private variable _reset 1; # indicates if camera needs to be reset
135	# to starting position.
136
137	private variable _first "" ; # This is the topmost dataset.
138	private variable _start 0
139	private variable _title ""
140	private variable _isolines
141	private variable _contourList ""
142
143	common _downloadPopup; # download options from popup
144	private common _hardcopy
145	private variable _width 0
146	private variable _height 0
147	private variable _resizePending 0
148	private variable _rotatePending 0
149	private variable _cutplanePending 0
150	private variable _legendPending 0
151	private variable _field ""
152	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
153	private variable _fieldNames {}
154	private variable _fields
155	private variable _curFldName ""
156	private variable _curFldLabel ""
157	}
158
159	itk::usual VtkIsosurfaceViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
168	package require vtk
169	set _serverType "vtkvis"
170
171	# Rebuild event
172	$_dispatcher register !rebuild
173	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
174
175	# Resize event
176	$_dispatcher register !resize
177	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
178
179	# Rotate event
180	$_dispatcher register !rotate
181	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
182
183	# Legend event
184	$_dispatcher register !legend
185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
186
187	# X-Cutplane event
188	$_dispatcher register !xcutplane
189	$_dispatcher dispatch $this !xcutplane \
190	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
191
192	# Y-Cutplane event
193	$_dispatcher register !ycutplane
194	$_dispatcher dispatch $this !ycutplane \
195	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
196
197	# Z-Cutplane event
198	$_dispatcher register !zcutplane
199	$_dispatcher dispatch $this !zcutplane \
200	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
201
202	#
203	# Populate parser with commands handle incoming requests
204	#
205	$_parser alias image [itcl::code $this ReceiveImage]
206	$_parser alias dataset [itcl::code $this ReceiveDataset]
207	$_parser alias legend [itcl::code $this ReceiveLegend]
208
209	# Initialize the view to some default parameters.
210	array set _view {
211	qw 0.853553
212	qx -0.353553
213	qy 0.353553
214	qz 0.146447
215	zoom 1.0
216	xpan 0
217	ypan 0
218	ortho 0
219	}
220	set _arcball [blt::arcball create 100 100]
221	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
222	$_arcball quaternion $q
223
224	array set _settings [subst {
225	background black
226	colormap BCGYR
227	colormapVisible 1
228	field "Default"
229	isolineColor white
230	axesVisible 1
231	axisLabelsVisible 1
232	axisXGrid 0
233	axisYGrid 0
234	axisZGrid 0
235	cutplaneEdges 0
236	cutplaneLighting 1
237	cutplanePreinterp 1
238	cutplaneOpacity 100
239	cutplaneVisible 0
240	cutplaneWireframe 0
241	cutplaneXPosition 50
242	cutplaneXVisible 1
243	cutplaneYPosition 50
244	cutplaneYVisible 1
245	cutplaneZPosition 50
246	cutplaneZVisible 1
247	isosurfaceEdges 0
248	isosurfaceLighting 1
249	isosurfaceOpacity 60
250	saveIsosurfaceOpacity 60
251	isosurfaceOutline 0
252	isosurfaceVisible 1
253	isosurfaceWireframe 0
254	legendVisible 1
255	numContours 10
256	}]
257	array set _changed {
258	isosurfaceOpacity 0
259	colormap 0
260	numContours 0
261	}
262
263	itk_component add view {
264	canvas $itk_component(plotarea).view \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270
271	itk_component add fieldmenu {
272	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
273	-tearoff no
274	} {
275	usual
276	ignore -background -foreground -relief -tearoff
277	}
278	set c $itk_component(view)
279	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
280	bind $c <4> [itcl::code $this Zoom in 0.25]
281	bind $c <5> [itcl::code $this Zoom out 0.25]
282	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
283	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
284	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
285	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
286	bind $c <Enter> "focus %W"
287	bind $c <Control-F1> [itcl::code $this ToggleConsole]
288
289	# Fix the scrollregion in case we go off screen
290	$c configure -scrollregion [$c bbox all]
291
292	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
293	set _map(cwidth) -1
294	set _map(cheight) -1
295	set _map(zoom) 1.0
296	set _map(original) ""
297
298	set f [$itk_component(main) component controls]
299	itk_component add reset {
300	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon reset-view] \
303	-command [itcl::code $this Zoom reset]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(reset) -side top -padx 2 -pady 2
309	Rappture::Tooltip::for $itk_component(reset) \
310	"Reset the view to the default zoom level"
311
312	itk_component add zoomin {
313	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
314	-highlightthickness 0 \
315	-image [Rappture::icon zoom-in] \
316	-command [itcl::code $this Zoom in]
317	} {
318	usual
319	ignore -highlightthickness
320	}
321	pack $itk_component(zoomin) -side top -padx 2 -pady 2
322	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
323
324	itk_component add zoomout {
325	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
326	-highlightthickness 0 \
327	-image [Rappture::icon zoom-out] \
328	-command [itcl::code $this Zoom out]
329	} {
330	usual
331	ignore -highlightthickness
332	}
333	pack $itk_component(zoomout) -side top -padx 2 -pady 2
334	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
335
336	itk_component add contour {
337	Rappture::PushButton $f.contour \
338	-onimage [Rappture::icon volume-on] \
339	-offimage [Rappture::icon volume-off] \
340	-variable [itcl::scope _settings(isosurfaceVisible)] \
341	-command [itcl::code $this AdjustSetting isosurfaceVisible]
342	}
343	$itk_component(contour) select
344	Rappture::Tooltip::for $itk_component(contour) \
345	"Don't display the isosurface"
346	pack $itk_component(contour) -padx 2 -pady 2
347
348	itk_component add cutplane {
349	Rappture::PushButton $f.cutplane \
350	-onimage [Rappture::icon cutbutton] \
351	-offimage [Rappture::icon cutbutton] \
352	-variable [itcl::scope _settings(cutplaneVisible)] \
353	-command [itcl::code $this AdjustSetting cutplaneVisible]
354	}
355	Rappture::Tooltip::for $itk_component(cutplane) \
356	"Show/Hide cutplanes"
357	pack $itk_component(cutplane) -padx 2 -pady 2
358
359
360	if { [catch {
361	BuildIsosurfaceTab
362	BuildCutplaneTab
363	BuildAxisTab
364	BuildCameraTab
365	} errs] != 0 } {
366	puts stderr errs=$errs
367	}
368	# Legend
369
370	set _image(legend) [image create photo]
371	itk_component add legend {
372	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
373	} {
374	usual
375	ignore -highlightthickness
376	rename -background -plotbackground plotBackground Background
377	}
378
379	# Hack around the Tk panewindow. The problem is that the requested
380	# size of the 3d view isn't set until an image is retrieved from
381	# the server. So the panewindow uses the tiny size.
382	set w 10000
383	pack forget $itk_component(view)
384	blt::table $itk_component(plotarea) \
385	0,0 $itk_component(view) -fill both -reqwidth $w
386	blt::table configure $itk_component(plotarea) c1 -resize none
387
388	# Bindings for rotation via mouse
389	bind $itk_component(view) <ButtonPress-1> \
390	[itcl::code $this Rotate click %x %y]
391	bind $itk_component(view) <B1-Motion> \
392	[itcl::code $this Rotate drag %x %y]
393	bind $itk_component(view) <ButtonRelease-1> \
394	[itcl::code $this Rotate release %x %y]
395
396	# Bindings for panning via mouse
397	bind $itk_component(view) <ButtonPress-2> \
398	[itcl::code $this Pan click %x %y]
399	bind $itk_component(view) <B2-Motion> \
400	[itcl::code $this Pan drag %x %y]
401	bind $itk_component(view) <ButtonRelease-2> \
402	[itcl::code $this Pan release %x %y]
403
404	#bind $itk_component(view) <ButtonRelease-3> \
405	# [itcl::code $this Pick %x %y]
406
407	# Bindings for panning via keyboard
408	bind $itk_component(view) <KeyPress-Left> \
409	[itcl::code $this Pan set -10 0]
410	bind $itk_component(view) <KeyPress-Right> \
411	[itcl::code $this Pan set 10 0]
412	bind $itk_component(view) <KeyPress-Up> \
413	[itcl::code $this Pan set 0 -10]
414	bind $itk_component(view) <KeyPress-Down> \
415	[itcl::code $this Pan set 0 10]
416	bind $itk_component(view) <Shift-KeyPress-Left> \
417	[itcl::code $this Pan set -2 0]
418	bind $itk_component(view) <Shift-KeyPress-Right> \
419	[itcl::code $this Pan set 2 0]
420	bind $itk_component(view) <Shift-KeyPress-Up> \
421	[itcl::code $this Pan set 0 -2]
422	bind $itk_component(view) <Shift-KeyPress-Down> \
423	[itcl::code $this Pan set 0 2]
424
425	# Bindings for zoom via keyboard
426	bind $itk_component(view) <KeyPress-Prior> \
427	[itcl::code $this Zoom out]
428	bind $itk_component(view) <KeyPress-Next> \
429	[itcl::code $this Zoom in]
430
431	bind $itk_component(view) <Enter> "focus $itk_component(view)"
432
433	if {[string equal "x11" [tk windowingsystem]]} {
434	# Bindings for zoom via mouse
435	bind $itk_component(view) <4> [itcl::code $this Zoom out]
436	bind $itk_component(view) <5> [itcl::code $this Zoom in]
437	}
438
439	set _image(download) [image create photo]
440
441	eval itk_initialize $args
442
443	EnableWaitDialog 500
444	Connect
445	update
446	}
447
448	# ----------------------------------------------------------------------
449	# DESTRUCTOR
450	# ----------------------------------------------------------------------
451	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
452	Disconnect
453	image delete $_image(plot)
454	image delete $_image(download)
455	catch { blt::arcball destroy $_arcball }
456	}
457
458	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
459	if { $_width < 2 } {
460	set _width 500
461	}
462	if { $_height < 2 } {
463	set _height 500
464	}
465	set _start [clock clicks -milliseconds]
466	SendCmd "screen size $_width $_height"
467
468	EventuallyRequestLegend
469	set _resizePending 0
470	}
471
472	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
473	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
474	SendCmd "camera orient $q"
475	set _rotatePending 0
476	}
477
478	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
479	if { !$_legendPending } {
480	set _legendPending 1
481	$_dispatcher event -idle !legend
482	}
483	}
484
485	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
486	set _width $w
487	set _height $h
488	$_arcball resize $w $h
489	if { !$_resizePending } {
490	set _resizePending 1
491	$_dispatcher event -after 400 !resize
492	}
493	}
494
495	set rotate_delay 100
496
497	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
498	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
499	if { !$_rotatePending } {
500	set _rotatePending 1
501	global rotate_delay
502	$_dispatcher event -after $rotate_delay !rotate
503	}
504	}
505
506	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
507	if { !$_cutplanePending } {
508	set _cutplanePending 1
509	$_dispatcher event -after 100 !${axis}cutplane
510	}
511	}
512
513	# ----------------------------------------------------------------------
514	# USAGE: add <dataobj> ?<settings>?
515	#
516	# Clients use this to add a data object to the plot. The optional
517	# <settings> are used to configure the plot. Allowed settings are
518	# -color, -brightness, -width, -linestyle, and -raise.
519	# ----------------------------------------------------------------------
520	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
521	if { ![$dataobj isvalid] } {
522	return; # Object doesn't contain valid data.
523	}
524	array set params {
525	-color auto
526	-width 1
527	-linestyle solid
528	-brightness 0
529	-raise 0
530	-description ""
531	-param ""
532	-type ""
533	}
534	array set params $settings
535	set params(-description) ""
536	set params(-param) ""
537	array set params $settings
538
539	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
540	# can't handle -autocolors yet
541	set params(-color) black
542	}
543	set pos [lsearch -exact $_dlist $dataobj]
544	if {$pos < 0} {
545	lappend _dlist $dataobj
546	}
547	set _obj2ovride($dataobj-color) $params(-color)
548	set _obj2ovride($dataobj-width) $params(-width)
549	set _obj2ovride($dataobj-raise) $params(-raise)
550	$_dispatcher event -idle !rebuild
551	}
552
553
554	# ----------------------------------------------------------------------
555	# USAGE: delete ?<dataobj1> <dataobj2> ...?
556	#
557	# Clients use this to delete a dataobj from the plot. If no dataobjs
558	# are specified, then all dataobjs are deleted. No data objects are
559	# deleted. They are only removed from the display list.
560	#
561	# ----------------------------------------------------------------------
562	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
563	if { [llength $args] == 0} {
564	set args $_dlist
565	}
566	# Delete all specified dataobjs
567	set changed 0
568	foreach dataobj $args {
569	set pos [lsearch -exact $_dlist $dataobj]
570	if { $pos < 0 } {
571	continue; # Don't know anything about it.
572	}
573	# Remove it from the dataobj list.
574	set _dlist [lreplace $_dlist $pos $pos]
575	array unset _obj2ovride $dataobj-*
576	array unset _settings $dataobj-*
577	set changed 1
578	}
579	# If anything changed, then rebuild the plot
580	if { $changed } {
581	$_dispatcher event -idle !rebuild
582	}
583	}
584
585	# ----------------------------------------------------------------------
586	# USAGE: get ?-objects?
587	# USAGE: get ?-visible?
588	# USAGE: get ?-image view?
589	#
590	# Clients use this to query the list of objects being plotted, in
591	# order from bottom to top of this result. The optional "-image"
592	# flag can also request the internal images being shown.
593	# ----------------------------------------------------------------------
594	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
595	if {[llength $args] == 0} {
596	set args "-objects"
597	}
598
599	set op [lindex $args 0]
600	switch -- $op {
601	"-objects" {
602	# put the dataobj list in order according to -raise options
603	set dlist {}
604	foreach dataobj $_dlist {
605	if { ![IsValidObject $dataobj] } {
606	continue
607	}
608	if {[info exists _obj2ovride($dataobj-raise)] &&
609	$_obj2ovride($dataobj-raise)} {
610	set dlist [linsert $dlist 0 $dataobj]
611	} else {
612	lappend dlist $dataobj
613	}
614	}
615	return $dlist
616	}
617	"-visible" {
618	set dlist {}
619	foreach dataobj $_dlist {
620	if { ![IsValidObject $dataobj] } {
621	continue
622	}
623	if { ![info exists _obj2ovride($dataobj-raise)] } {
624	# No setting indicates that the object isn't visible.
625	continue
626	}
627	# Otherwise use the -raise parameter to put the object to
628	# the front of the list.
629	if { $_obj2ovride($dataobj-raise) } {
630	set dlist [linsert $dlist 0 $dataobj]
631	} else {
632	lappend dlist $dataobj
633	}
634	}
635	return $dlist
636	}
637	-image {
638	if {[llength $args] != 2} {
639	error "wrong # args: should be \"get -image view\""
640	}
641	switch -- [lindex $args end] {
642	view {
643	return $_image(plot)
644	}
645	default {
646	error "bad image name \"[lindex $args end]\": should be view"
647	}
648	}
649	}
650	default {
651	error "bad option \"$op\": should be -objects or -image"
652	}
653	}
654	}
655
656	# ----------------------------------------------------------------------
657	# USAGE: scale ?<data1> <data2> ...?
658	#
659	# Sets the default limits for the overall plot according to the
660	# limits of the data for all of the given <data> objects. This
661	# accounts for all objects--even those not showing on the screen.
662	# Because of this, the limits are appropriate for all objects as
663	# the user scans through data in the ResultSet viewer.
664	# ----------------------------------------------------------------------
665	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
666	foreach dataobj $args {
667	if { ![$dataobj isvalid] } {
668	continue; # Object doesn't contain valid data.
669	}
670	foreach axis { x y z } {
671	set lim [$dataobj limits $axis]
672	if { ![info exists _limits($axis)] } {
673	set _limits($axis) $lim
674	continue
675	}
676	foreach {min max} $lim break
677	foreach {amin amax} $_limits($axis) break
678	if { $amin > $min } {
679	set amin $min
680	}
681	if { $amax < $max } {
682	set amax $max
683	}
684	set _limits($axis) [list $amin $amax]
685	}
686	foreach { fname lim } [$dataobj fieldlimits] {
687	if { ![info exists _limits($fname)] } {
688	set _limits($fname) $lim
689	continue
690	}
691	foreach {min max} $lim break
692	foreach {fmin fmax} $_limits($fname) break
693	if { $fmin > $min } {
694	set fmin $min
695	}
696	if { $fmax < $max } {
697	set fmax $max
698	}
699	set _limits($fname) [list $fmin $fmax]
700	}
701	}
702	}
703
704	# ----------------------------------------------------------------------
705	# USAGE: download coming
706	# USAGE: download controls <downloadCommand>
707	# USAGE: download now
708	#
709	# Clients use this method to create a downloadable representation
710	# of the plot. Returns a list of the form {ext string}, where
711	# "ext" is the file extension (indicating the type of data) and
712	# "string" is the data itself.
713	# ----------------------------------------------------------------------
714	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
715	switch $option {
716	coming {
717	if {[catch {
718	blt::winop snap $itk_component(plotarea) $_image(download)
719	}]} {
720	$_image(download) configure -width 1 -height 1
721	$_image(download) put #000000
722	}
723	}
724	controls {
725	set popup .vtkviewerdownload
726	if { ![winfo exists .vtkviewerdownload] } {
727	set inner [BuildDownloadPopup $popup [lindex $args 0]]
728	} else {
729	set inner [$popup component inner]
730	}
731	set _downloadPopup(image_controls) $inner.image_frame
732	set num [llength [get]]
733	set num [expr {($num == 1) ? "1 result" : "$num results"}]
734	set word [Rappture::filexfer::label downloadWord]
735	$inner.summary configure -text "$word $num in the following format:"
736	update idletasks ;# Fix initial sizes
737	return $popup
738	}
739	now {
740	set popup .vtkviewerdownload
741	if {[winfo exists .vtkviewerdownload]} {
742	$popup deactivate
743	}
744	switch -- $_downloadPopup(format) {
745	"image" {
746	return [$this GetImage [lindex $args 0]]
747	}
748	"vtk" {
749	return [$this GetVtkData [lindex $args 0]]
750	}
751	}
752	return ""
753	}
754	default {
755	error "bad option \"$option\": should be coming, controls, now"
756	}
757	}
758	}
759
760	# ----------------------------------------------------------------------
761	# USAGE: Connect ?<host:port>,<host:port>...?
762	#
763	# Clients use this method to establish a connection to a new
764	# server, or to reestablish a connection to the previous server.
765	# Any existing connection is automatically closed.
766	# ----------------------------------------------------------------------
767	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
768	set _hosts [GetServerList "vtkvis"]
769	if { "" == $_hosts } {
770	return 0
771	}
772	set result [VisViewer::Connect $_hosts]
773	if { $result } {
774	if { $_reportClientInfo } {
775	# Tell the server the viewer, hub, user and session.
776	# Do this immediately on connect before buffering any commands
777	global env
778
779	set info {}
780	set user "???"
781	if { [info exists env(USER)] } {
782	set user $env(USER)
783	}
784	set session "???"
785	if { [info exists env(SESSION)] } {
786	set session $env(SESSION)
787	}
788	lappend info "hub" [exec hostname]
789	lappend info "client" "vtkisosurfaceviewer"
790	lappend info "user" $user
791	lappend info "session" $session
792	SendCmd "clientinfo [list $info]"
793	}
794
795	set w [winfo width $itk_component(view)]
796	set h [winfo height $itk_component(view)]
797	EventuallyResize $w $h
798	}
799	return $result
800	}
801
802	#
803	# isconnected --
804	#
805	# Indicates if we are currently connected to the visualization server.
806	#
807	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
808	return [VisViewer::IsConnected]
809	}
810
811	#
812	# disconnect --
813	#
814	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
815	Disconnect
816	set _reset 1
817	}
818
819	#
820	# Disconnect --
821	#
822	# Clients use this method to disconnect from the current rendering
823	# server.
824	#
825	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
826	VisViewer::Disconnect
827
828	$_dispatcher cancel !rebuild
829	$_dispatcher cancel !resize
830	$_dispatcher cancel !rotate
831	$_dispatcher cancel !xcutplane
832	$_dispatcher cancel !ycutplane
833	$_dispatcher cancel !zcutplane
834	$_dispatcher cancel !legend
835	# disconnected -- no more data sitting on server
836	set _outbuf ""
837	array unset _datasets
838	array unset _data
839	array unset _colormaps
840	array unset _seeds
841	array unset _dataset2style
842	array unset _obj2datasets
843	}
844
845	# ----------------------------------------------------------------------
846	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
847	#
848	# Invoked automatically whenever the "image" command comes in from
849	# the rendering server. Indicates that binary image data with the
850	# specified <size> will follow.
851	# ----------------------------------------------------------------------
852	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
853	array set info {
854	-token "???"
855	-bytes 0
856	-type image
857	}
858	array set info $args
859	set bytes [ReceiveBytes $info(-bytes)]
860	if { $info(-type) == "image" } {
861	if 0 {
862	set f [open "last.ppm" "w"]
863	puts $f $bytes
864	close $f
865	}
866	$_image(plot) configure -data $bytes
867	set time [clock seconds]
868	set date [clock format $time]
869	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
870	if { $_start > 0 } {
871	set finish [clock clicks -milliseconds]
872	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
873	set _start 0
874	}
875	} elseif { $info(type) == "print" } {
876	set tag $this-print-$info(-token)
877	set _hardcopy($tag) $bytes
878	}
879	}
880
881	#
882	# ReceiveDataset --
883	#
884	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
885	if { ![isconnected] } {
886	return
887	}
888	set option [lindex $args 0]
889	switch -- $option {
890	"scalar" {
891	set option [lindex $args 1]
892	switch -- $option {
893	"world" {
894	foreach { x y z value tag } [lrange $args 2 end] break
895	}
896	"pixel" {
897	foreach { x y value tag } [lrange $args 2 end] break
898	}
899	}
900	}
901	"vector" {
902	set option [lindex $args 1]
903	switch -- $option {
904	"world" {
905	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
906	}
907	"pixel" {
908	foreach { x y vx vy vz tag } [lrange $args 2 end] break
909	}
910	}
911	}
912	"names" {
913	foreach { name } [lindex $args 1] {
914	#puts stderr "Dataset: $name"
915	}
916	}
917	default {
918	error "unknown dataset option \"$option\" from server"
919	}
920	}
921	}
922
923	# ----------------------------------------------------------------------
924	# USAGE: Rebuild
925	#
926	# Called automatically whenever something changes that affects the
927	# data in the widget. Clears any existing data and rebuilds the
928	# widget to display new data.
929	# ----------------------------------------------------------------------
930	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
931	set w [winfo width $itk_component(view)]
932	set h [winfo height $itk_component(view)]
933	if { $w < 2 \|\| $h < 2 } {
934	$_dispatcher event -idle !rebuild
935	return
936	}
937
938	# Turn on buffering of commands to the server. We don't want to
939	# be preempted by a server disconnect/reconnect (which automatically
940	# generates a new call to Rebuild).
941	StartBufferingCommands
942
943	if { $_reset } {
944	set _width $w
945	set _height $h
946	$_arcball resize $w $h
947	DoResize
948	#
949	# Reset the camera and other view parameters
950	#
951	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
952	$_arcball quaternion $q
953	if {$_view(ortho)} {
954	SendCmd "camera mode ortho"
955	} else {
956	SendCmd "camera mode persp"
957	}
958	DoRotate
959	PanCamera
960	set _first ""
961	InitSettings axisXGrid axisYGrid axisZGrid axisMode \
962	axesVisible axisLabelsVisible
963	foreach axis { x y z } {
964	SendCmd "axis lformat $axis %g"
965	}
966	StopBufferingCommands
967	SendCmd "imgflush"
968	StartBufferingCommands
969	}
970	set _first ""
971	SendCmd "dataset visible 0"
972	foreach dataobj [get -objects] {
973	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
974	set _first $dataobj
975	}
976	set _obj2datasets($dataobj) ""
977	foreach comp [$dataobj components] {
978	set tag $dataobj-$comp
979	if { ![info exists _datasets($tag)] } {
980	set bytes [$dataobj vtkdata $comp]
981	if 0 {
982	set f [open "/tmp/isosurface.vtk" "w"]
983	puts $f $bytes
984	close $f
985	}
986	set length [string length $bytes]
987	if { $_reportClientInfo } {
988	set info {}
989	lappend info "tool_id" [$dataobj hints toolId]
990	lappend info "tool_name" [$dataobj hints toolName]
991	lappend info "tool_version" [$dataobj hints toolRevision]
992	lappend info "tool_title" [$dataobj hints toolTitle]
993	lappend info "dataset_label" [$dataobj hints label]
994	lappend info "dataset_size" $length
995	lappend info "dataset_tag" $tag
996	SendCmd "clientinfo [list $info]"
997	}
998	append _outbuf "dataset add $tag data follows $length\n"
999	append _outbuf $bytes
1000	set _datasets($tag) 1
1001	SetObjectStyle $dataobj $comp
1002	}
1003	lappend _obj2datasets($dataobj) $tag
1004	if { [info exists _obj2ovride($dataobj-raise)] } {
1005	# Setting dataset visible enables outline
1006	# and contour3d
1007	SendCmd "dataset visible 1 $tag"
1008	}
1009	}
1010	}
1011
1012	if { $_first != "" } {
1013	$itk_component(field) choices delete 0 end
1014	$itk_component(fieldmenu) delete 0 end
1015	array unset _fields
1016	set _curFldName ""
1017	foreach cname [$_first components] {
1018	foreach fname [$_first fieldnames $cname] {
1019	if { [info exists _fields($fname)] } {
1020	continue
1021	}
1022	foreach { label units components } \
1023	[$_first fieldinfo $fname] break
1024	$itk_component(field) choices insert end "$fname" "$label"
1025	$itk_component(fieldmenu) add radiobutton -label "$label" \
1026	-value $label -variable [itcl::scope _curFldLabel] \
1027	-selectcolor red \
1028	-activebackground $itk_option(-plotbackground) \
1029	-activeforeground $itk_option(-plotforeground) \
1030	-font "Arial 8" \
1031	-command [itcl::code $this Combo invoke]
1032	set _fields($fname) [list $label $units $components]
1033	if { $_curFldName == "" } {
1034	set _curFldName $fname
1035	set _curFldLabel $label
1036	}
1037	}
1038	}
1039	$itk_component(field) value $_curFldLabel
1040	}
1041	InitSettings cutplaneVisible isosurfaceOutline
1042	if { $_reset } {
1043	# These are settings that rely on a dataset being loaded.
1044	InitSettings \
1045	isosurfaceLighting \
1046	field \
1047	isosurfaceEdges isosurfaceLighting isosurfaceOpacity \
1048	isosurfaceWireframe \
1049	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1050	cutplaneXVisible cutplaneYVisible cutplaneZVisible \
1051	cutplanePreinterp numContours
1052
1053	Zoom reset
1054	foreach axis { x y z } {
1055	# Another problem fixed by a <view>. We looking into a data
1056	# object for the name of the axes. This should be global to
1057	# the viewer itself.
1058	set label [$_first hints ${axis}label]
1059	if { $label == "" } {
1060	set label [string toupper $axis]
1061	}
1062	# May be a space in the axis label.
1063	SendCmd [list axis name $axis $label]
1064	}
1065	if { [array size _fields] < 2 } {
1066	blt::table forget $itk_component(field) $itk_component(field_l)
1067	}
1068	set _reset 0
1069	}
1070
1071	# Actually write the commands to the server socket. If it fails, we don't
1072	# care. We're finished here.
1073	blt::busy hold $itk_component(hull)
1074	StopBufferingCommands; # Turn off buffering and send commands.
1075	blt::busy release $itk_component(hull)
1076	}
1077
1078	# ----------------------------------------------------------------------
1079	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1080	#
1081	# Returns a list of server IDs for the current datasets being displayed. This
1082	# is normally a single ID, but it might be a list of IDs if the current data
1083	# object has multiple components.
1084	# ----------------------------------------------------------------------
1085	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1086	set flag [lindex $args 0]
1087	switch -- $flag {
1088	"-all" {
1089	if { [llength $args] > 1 } {
1090	error "CurrentDatasets: can't specify dataobj after \"-all\""
1091	}
1092	set dlist [get -objects]
1093	}
1094	"-visible" {
1095	if { [llength $args] > 1 } {
1096	set dlist {}
1097	set args [lrange $args 1 end]
1098	foreach dataobj $args {
1099	if { [info exists _obj2ovride($dataobj-raise)] } {
1100	lappend dlist $dataobj
1101	}
1102	}
1103	} else {
1104	set dlist [get -visible]
1105	}
1106	}
1107	default {
1108	set dlist $args
1109	}
1110	}
1111	set rlist ""
1112	foreach dataobj $dlist {
1113	foreach comp [$dataobj components] {
1114	set tag $dataobj-$comp
1115	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1116	lappend rlist $tag
1117	}
1118	}
1119	}
1120	return $rlist
1121	}
1122
1123	# ----------------------------------------------------------------------
1124	# USAGE: Zoom in
1125	# USAGE: Zoom out
1126	# USAGE: Zoom reset
1127	#
1128	# Called automatically when the user clicks on one of the zoom
1129	# controls for this widget. Changes the zoom for the current view.
1130	# ----------------------------------------------------------------------
1131	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1132	switch -- $option {
1133	"in" {
1134	set _view(zoom) [expr {$_view(zoom)*1.25}]
1135	SendCmd "camera zoom $_view(zoom)"
1136	}
1137	"out" {
1138	set _view(zoom) [expr {$_view(zoom)*0.8}]
1139	SendCmd "camera zoom $_view(zoom)"
1140	}
1141	"reset" {
1142	array set _view {
1143	qw 0.853553
1144	qx -0.353553
1145	qy 0.353553
1146	qz 0.146447
1147	zoom 1.0
1148	xpan 0
1149	ypan 0
1150	}
1151	if { $_first != "" } {
1152	set location [$_first hints camera]
1153	if { $location != "" } {
1154	array set _view $location
1155	}
1156	}
1157	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1158	$_arcball quaternion $q
1159	DoRotate
1160	SendCmd "camera reset"
1161	}
1162	}
1163	}
1164
1165	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1166	set x $_view(xpan)
1167	set y $_view(ypan)
1168	SendCmd "camera pan $x $y"
1169	}
1170
1171
1172	# ----------------------------------------------------------------------
1173	# USAGE: Rotate click <x> <y>
1174	# USAGE: Rotate drag <x> <y>
1175	# USAGE: Rotate release <x> <y>
1176	#
1177	# Called automatically when the user clicks/drags/releases in the
1178	# plot area. Moves the plot according to the user's actions.
1179	# ----------------------------------------------------------------------
1180	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1181	switch -- $option {
1182	"click" {
1183	$itk_component(view) configure -cursor fleur
1184	set _click(x) $x
1185	set _click(y) $y
1186	}
1187	"drag" {
1188	if {[array size _click] == 0} {
1189	Rotate click $x $y
1190	} else {
1191	set w [winfo width $itk_component(view)]
1192	set h [winfo height $itk_component(view)]
1193	if {$w <= 0 \|\| $h <= 0} {
1194	return
1195	}
1196
1197	if {[catch {
1198	# this fails sometimes for no apparent reason
1199	set dx [expr {double($x-$_click(x))/$w}]
1200	set dy [expr {double($y-$_click(y))/$h}]
1201	}]} {
1202	return
1203	}
1204	if { $dx == 0 && $dy == 0 } {
1205	return
1206	}
1207	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1208	EventuallyRotate $q
1209	set _click(x) $x
1210	set _click(y) $y
1211	}
1212	}
1213	"release" {
1214	Rotate drag $x $y
1215	$itk_component(view) configure -cursor ""
1216	catch {unset _click}
1217	}
1218	default {
1219	error "bad option \"$option\": should be click, drag, release"
1220	}
1221	}
1222	}
1223
1224	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1225	foreach tag [CurrentDatasets -visible] {
1226	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1227	}
1228	}
1229
1230	# ----------------------------------------------------------------------
1231	# USAGE: $this Pan click x y
1232	# $this Pan drag x y
1233	# $this Pan release x y
1234	#
1235	# Called automatically when the user clicks on one of the zoom
1236	# controls for this widget. Changes the zoom for the current view.
1237	# ----------------------------------------------------------------------
1238	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1239	switch -- $option {
1240	"set" {
1241	set w [winfo width $itk_component(view)]
1242	set h [winfo height $itk_component(view)]
1243	set x [expr $x / double($w)]
1244	set y [expr $y / double($h)]
1245	set _view(xpan) [expr $_view(xpan) + $x]
1246	set _view(ypan) [expr $_view(ypan) + $y]
1247	PanCamera
1248	return
1249	}
1250	"click" {
1251	set _click(x) $x
1252	set _click(y) $y
1253	$itk_component(view) configure -cursor hand1
1254	}
1255	"drag" {
1256	if { ![info exists _click(x)] } {
1257	set _click(x) $x
1258	}
1259	if { ![info exists _click(y)] } {
1260	set _click(y) $y
1261	}
1262	set w [winfo width $itk_component(view)]
1263	set h [winfo height $itk_component(view)]
1264	set dx [expr ($_click(x) - $x)/double($w)]
1265	set dy [expr ($_click(y) - $y)/double($h)]
1266	set _click(x) $x
1267	set _click(y) $y
1268	set _view(xpan) [expr $_view(xpan) - $dx]
1269	set _view(ypan) [expr $_view(ypan) - $dy]
1270	PanCamera
1271	}
1272	"release" {
1273	Pan drag $x $y
1274	$itk_component(view) configure -cursor ""
1275	}
1276	default {
1277	error "unknown option \"$option\": should set, click, drag, or release"
1278	}
1279	}
1280	}
1281
1282	# ----------------------------------------------------------------------
1283	# USAGE: InitSettings <what> ?<value>?
1284	#
1285	# Used internally to update rendering settings whenever parameters
1286	# change in the popup settings panel. Sends the new settings off
1287	# to the back end.
1288	# ----------------------------------------------------------------------
1289	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1290	foreach spec $args {
1291	if { [info exists _settings($_first-$spec)] } {
1292	# Reset global setting with dataobj specific setting
1293	set _settings($spec) $_settings($_first-$spec)
1294	}
1295	AdjustSetting $spec
1296	}
1297	}
1298
1299	#
1300	# AdjustSetting --
1301	#
1302	# Changes/updates a specific setting in the widget. There are
1303	# usually user-setable option. Commands are sent to the render
1304	# server.
1305	#
1306	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1307	if { ![isconnected] } {
1308	return
1309	}
1310	switch -- $what {
1311	"background" {
1312	set bgcolor [$itk_component(background) value]
1313	array set fgcolors {
1314	"black" "white"
1315	"white" "black"
1316	"grey" "black"
1317	}
1318	configure -plotbackground $bgcolor \
1319	-plotforeground $fgcolors($bgcolor)
1320	$itk_component(view) delete "legend"
1321	DrawLegend
1322	}
1323	"axesVisible" {
1324	set bool $_settings(axesVisible)
1325	SendCmd "axis visible all $bool"
1326	}
1327	"axisLabelsVisible" {
1328	set bool $_settings(axisLabelsVisible)
1329	SendCmd "axis labels all $bool"
1330	}
1331	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1332	set axis [string tolower [string range $what 4 4]]
1333	set bool $_settings($what)
1334	SendCmd "axis grid $axis $bool"
1335	}
1336	"axisMode" {
1337	set mode [$itk_component(axisMode) value]
1338	set mode [$itk_component(axisMode) translate $mode]
1339	set _settings($what) $mode
1340	SendCmd "axis flymode $mode"
1341	}
1342	"cutplaneEdges" {
1343	set bool $_settings($what)
1344	SendCmd "cutplane edges $bool"
1345	}
1346	"cutplaneVisible" {
1347	set bool $_settings($what)
1348	SendCmd "cutplane visible $bool"
1349	}
1350	"cutplaneWireframe" {
1351	set bool $_settings($what)
1352	SendCmd "cutplane wireframe $bool"
1353	}
1354	"cutplaneLighting" {
1355	set bool $_settings($what)
1356	SendCmd "cutplane lighting $bool"
1357	}
1358	"cutplaneOpacity" {
1359	set val $_settings($what)
1360	set sval [expr { 0.01 * double($val) }]
1361	SendCmd "cutplane opacity $sval"
1362	}
1363	"cutplanePreinterp" {
1364	set bool $_settings($what)
1365	SendCmd "cutplane preinterp $bool"
1366	}
1367	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1368	set axis [string tolower [string range $what 8 8]]
1369	set bool $_settings($what)
1370	if { $bool } {
1371	$itk_component(${axis}position) configure -state normal \
1372	-troughcolor white
1373	} else {
1374	$itk_component(${axis}position) configure -state disabled \
1375	-troughcolor grey82
1376	}
1377	SendCmd "cutplane axis $axis $bool"
1378	}
1379	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1380	set axis [string tolower [string range $what 8 8]]
1381	set pos [expr $_settings($what) * 0.01]
1382	SendCmd "cutplane slice ${axis} ${pos}"
1383	set _cutplanePending 0
1384	}
1385	"colormap" {
1386	set _changed(colormap) 1
1387	StartBufferingCommands
1388	set color [$itk_component(colormap) value]
1389	set _settings(colormap) $color
1390	if { $color == "none" } {
1391	if { $_settings(colormapVisible) } {
1392	SendCmd "contour3d colormode constant {}"
1393	set _settings(colormapVisible) 0
1394	}
1395	} else {
1396	if { !$_settings(colormapVisible) } {
1397	SendCmd "contour3d colormode $_colorMode $_curFldName"
1398	set _settings(colormapVisible) 1
1399	}
1400	SetCurrentColormap $color
1401	}
1402	StopBufferingCommands
1403	EventuallyRequestLegend
1404	}
1405	"numContours" {
1406	set _settings(numContours) [$itk_component(numcontours) value]
1407	set _currentNumContours $_settings(numContours)
1408	UpdateContourList
1409	set _changed(numContours) 1
1410	SendCmd "contour3d contourlist [list $_contourList]"
1411	DrawLegend
1412	}
1413	"isosurfaceWireframe" {
1414	set bool $_settings(isosurfaceWireframe)
1415	SendCmd "contour3d wireframe $bool"
1416	}
1417	"isosurfaceVisible" {
1418	set bool $_settings(isosurfaceVisible)
1419	SendCmd "contour3d visible $bool"
1420	if { $bool } {
1421	Rappture::Tooltip::for $itk_component(contour) \
1422	"Hide the isosurface"
1423	} else {
1424	Rappture::Tooltip::for $itk_component(contour) \
1425	"Show the isosurface"
1426	}
1427	DrawLegend
1428	}
1429	"isosurfaceLighting" {
1430	set bool $_settings(isosurfaceLighting)
1431	SendCmd "contour3d lighting $bool"
1432	}
1433	"isosurfaceEdges" {
1434	set bool $_settings(isosurfaceEdges)
1435	SendCmd "contour3d edges $bool"
1436	}
1437	"isosurfaceOutline" {
1438	set bool $_settings(isosurfaceOutline)
1439	SendCmd "outline visible $bool"
1440	}
1441	"isolineColor" {
1442	set color [$itk_component(isolineColor) value]
1443	set _settings(isolineColor) $color
1444	DrawLegend
1445	}
1446	"isosurfaceOpacity" {
1447	set val $_settings(isosurfaceOpacity)
1448	set sval [expr { 0.01 * double($val) }]
1449	SendCmd "contour3d opacity $sval"
1450	}
1451	"field" {
1452	set label [$itk_component(field) value]
1453	set fname [$itk_component(field) translate $label]
1454	set _settings(field) $fname
1455	if { [info exists _fields($fname)] } {
1456	foreach { label units components } $_fields($fname) break
1457	if { $components > 1 } {
1458	set _colorMode vmag
1459	} else {
1460	set _colorMode scalar
1461	}
1462	set _curFldName $fname
1463	set _curFldLabel $label
1464	} else {
1465	puts stderr "unknown field \"$fname\""
1466	return
1467	}
1468	SendCmd "dataset scalar $_curFldName"
1469	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1470	SendCmd "cutplane colormode $_colorMode $_curFldName"
1471	SendCmd "contour3d colormode $_colorMode $_curFldName"
1472	SendCmd "camera reset"
1473	UpdateContourList
1474	DrawLegend
1475	}
1476	"legendVisible" {
1477	if { !$_settings(legendVisible) } {
1478	$itk_component(view) delete legend
1479	}
1480	DrawLegend
1481	}
1482	default {
1483	error "don't know how to fix $what"
1484	}
1485	}
1486	}
1487
1488
1489	#
1490	# RequestLegend --
1491	#
1492	# Request a new legend from the server. The size of the legend
1493	# is determined from the height of the canvas.
1494	#
1495	# This should be called when
1496	# 1. A new current colormap is set.
1497	# 2. Window is resized.
1498	# 3. The limits of the data have changed. (Just need a redraw).
1499	# 4. Number of isolines have changed. (Just need a redraw).
1500	# 5. Legend becomes visible (Just need a redraw).
1501	#
1502	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1503	set _legendPending 0
1504	if { ![info exists _fields($_curFldName)] } {
1505	return
1506	}
1507	set fname $_curFldName
1508	set font "Arial 8"
1509	set lineht [font metrics $font -linespace]
1510	set w 12
1511	set h [expr {$_height - 2 * ($lineht + 2)}]
1512	if { $h < 1 } {
1513	return
1514	}
1515	if { [string match "component*" $fname] } {
1516	set title ""
1517	} else {
1518	if { [info exists _fields($fname)] } {
1519	foreach { title units } $_fields($fname) break
1520	if { $units != "" } {
1521	set title [format "%s (%s)" $title $units]
1522	}
1523	} else {
1524	set title $fname
1525	}
1526	}
1527	# If there's a title too, subtract one more line
1528	if { $title != "" } {
1529	incr h -$lineht
1530	}
1531	# Set the legend on the first heightmap dataset.
1532	if { $_currentColormap != "" } {
1533	set cmap $_currentColormap
1534	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1535	}
1536	}
1537
1538	# ----------------------------------------------------------------------
1539	# CONFIGURATION OPTION: -plotbackground
1540	# ----------------------------------------------------------------------
1541	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1542	if { [isconnected] } {
1543	set rgb [Color2RGB $itk_option(-plotbackground)]
1544	SendCmd "screen bgcolor $rgb"
1545	}
1546	}
1547
1548	# ----------------------------------------------------------------------
1549	# CONFIGURATION OPTION: -plotforeground
1550	# ----------------------------------------------------------------------
1551	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1552	if { [isconnected] } {
1553	set rgb [Color2RGB $itk_option(-plotforeground)]
1554	SendCmd "axis color all $rgb"
1555	SendCmd "outline color $rgb"
1556	SendCmd "cutplane color $rgb"
1557	}
1558	}
1559
1560	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1561	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1562	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1563	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1564	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1565	return [array get limits]
1566	}
1567
1568	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1569
1570	set fg [option get $itk_component(hull) font Font]
1571	#set bfg [option get $itk_component(hull) boldFont Font]
1572
1573	set inner [$itk_component(main) insert end \
1574	-title "Isosurface Settings" \
1575	-icon [Rappture::icon volume-on]]
1576	$inner configure -borderwidth 4
1577
1578	checkbutton $inner.contour \
1579	-text "Isosurfaces" \
1580	-variable [itcl::scope _settings(isosurfaceVisible)] \
1581	-command [itcl::code $this AdjustSetting isosurfaceVisible] \
1582	-font "Arial 9"
1583
1584	checkbutton $inner.wireframe \
1585	-text "Wireframe" \
1586	-variable [itcl::scope _settings(isosurfaceWireframe)] \
1587	-command [itcl::code $this AdjustSetting isosurfaceWireframe] \
1588	-font "Arial 9"
1589
1590	checkbutton $inner.lighting \
1591	-text "Enable Lighting" \
1592	-variable [itcl::scope _settings(isosurfaceLighting)] \
1593	-command [itcl::code $this AdjustSetting isosurfaceLighting] \
1594	-font "Arial 9"
1595
1596	checkbutton $inner.edges \
1597	-text "Edges" \
1598	-variable [itcl::scope _settings(isosurfaceEdges)] \
1599	-command [itcl::code $this AdjustSetting isosurfaceEdges] \
1600	-font "Arial 9"
1601
1602	checkbutton $inner.outline \
1603	-text "Outline" \
1604	-variable [itcl::scope _settings(isosurfaceOutline)] \
1605	-command [itcl::code $this AdjustSetting isosurfaceOutline] \
1606	-font "Arial 9"
1607
1608	checkbutton $inner.legend \
1609	-text "Legend" \
1610	-variable [itcl::scope _settings(legendVisible)] \
1611	-command [itcl::code $this AdjustSetting legendVisible] \
1612	-font "Arial 9"
1613
1614	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1615	itk_component add isolineColor {
1616	Rappture::Combobox $inner.linecolor -width 10 -editable no
1617	}
1618	$inner.linecolor choices insert end \
1619	"black" "black" \
1620	"blue" "blue" \
1621	"cyan" "cyan" \
1622	"green" "green" \
1623	"grey" "grey" \
1624	"magenta" "magenta" \
1625	"orange" "orange" \
1626	"red" "red" \
1627	"white" "white" \
1628	"none" "none"
1629
1630	$itk_component(isolineColor) value "white"
1631	bind $inner.linecolor <<Value>> \
1632	[itcl::code $this AdjustSetting isolineColor]
1633
1634	label $inner.background_l -text "Background" -font "Arial 9"
1635	itk_component add background {
1636	Rappture::Combobox $inner.background -width 10 -editable no
1637	}
1638	$inner.background choices insert end \
1639	"black" "black" \
1640	"white" "white" \
1641	"grey" "grey"
1642
1643	$itk_component(background) value $_settings(background)
1644	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1645
1646	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1647	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1648	-variable [itcl::scope _settings(isosurfaceOpacity)] \
1649	-width 10 \
1650	-showvalue off \
1651	-command [itcl::code $this AdjustSetting isosurfaceOpacity]
1652
1653	label $inner.scale_l -text "Scale" -font "Arial 9"
1654	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1655	-variable [itcl::scope _settings(contour-scale)] \
1656	-width 10 \
1657	-showvalue off \
1658	-command [itcl::code $this AdjustSetting contour-scale]
1659
1660	itk_component add field_l {
1661	label $inner.field_l -text "Field" -font "Arial 9"
1662	} {
1663	ignore -font
1664	}
1665	itk_component add field {
1666	Rappture::Combobox $inner.field -width 10 -editable no
1667	}
1668	bind $inner.field <<Value>> \
1669	[itcl::code $this AdjustSetting field]
1670
1671	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1672	itk_component add colormap {
1673	Rappture::Combobox $inner.colormap -width 10 -editable no
1674	}
1675	$inner.colormap choices insert end \
1676	"BCGYR" "BCGYR" \
1677	"BGYOR" "BGYOR" \
1678	"blue" "blue" \
1679	"blue-to-brown" "blue-to-brown" \
1680	"blue-to-orange" "blue-to-orange" \
1681	"blue-to-grey" "blue-to-grey" \
1682	"green-to-magenta" "green-to-magenta" \
1683	"greyscale" "greyscale" \
1684	"nanohub" "nanohub" \
1685	"rainbow" "rainbow" \
1686	"spectral" "spectral" \
1687	"ROYGB" "ROYGB" \
1688	"RYGCB" "RYGCB" \
1689	"brown-to-blue" "brown-to-blue" \
1690	"grey-to-blue" "grey-to-blue" \
1691	"orange-to-blue" "orange-to-blue"
1692
1693	$itk_component(colormap) value "BCGYR"
1694	bind $inner.colormap <<Value>> \
1695	[itcl::code $this AdjustSetting colormap]
1696
1697	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1698	itk_component add numcontours {
1699	Rappture::Spinint $inner.numcontours \
1700	-min 1 -max 50 -font "arial 9"
1701	}
1702	$itk_component(numcontours) value $_settings(numContours)
1703	bind $itk_component(numcontours) <<Value>> \
1704	[itcl::code $this AdjustSetting numContours]
1705
1706	blt::table $inner \
1707	0,0 $inner.field_l -anchor w -pady 2 \
1708	0,1 $inner.field -anchor w -pady 2 -fill x \
1709	1,0 $inner.colormap_l -anchor w -pady 2 \
1710	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1711	2,0 $inner.linecolor_l -anchor w -pady 2 \
1712	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1713	3,0 $inner.background_l -anchor w -pady 2 \
1714	3,1 $inner.background -anchor w -pady 2 -fill x \
1715	4,0 $inner.numcontours_l -anchor w -pady 2 \
1716	4,1 $inner.numcontours -anchor w -pady 2 \
1717	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1718	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1719	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1720	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1721	9,0 $inner.legend -anchor w -pady 2 \
1722	10,0 $inner.opacity_l -anchor w -pady 2 \
1723	10,1 $inner.opacity -fill x -pady 2 -fill x \
1724
1725	blt::table configure $inner r* c* -resize none
1726	blt::table configure $inner r11 c1 -resize expand
1727	}
1728
1729	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1730
1731	set fg [option get $itk_component(hull) font Font]
1732	#set bfg [option get $itk_component(hull) boldFont Font]
1733
1734	set inner [$itk_component(main) insert end \
1735	-title "Axis Settings" \
1736	-icon [Rappture::icon axis2]]
1737	$inner configure -borderwidth 4
1738
1739	checkbutton $inner.visible \
1740	-text "Show Axes" \
1741	-variable [itcl::scope _settings(axesVisible)] \
1742	-command [itcl::code $this AdjustSetting axesVisible] \
1743	-font "Arial 9"
1744
1745	checkbutton $inner.labels \
1746	-text "Show Axis Labels" \
1747	-variable [itcl::scope _settings(axisLabelsVisible)] \
1748	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1749	-font "Arial 9"
1750
1751	checkbutton $inner.gridx \
1752	-text "Show X Grid" \
1753	-variable [itcl::scope _settings(axisXGrid)] \
1754	-command [itcl::code $this AdjustSetting axisXGrid] \
1755	-font "Arial 9"
1756	checkbutton $inner.gridy \
1757	-text "Show Y Grid" \
1758	-variable [itcl::scope _settings(axisYGrid)] \
1759	-command [itcl::code $this AdjustSetting axisYGrid] \
1760	-font "Arial 9"
1761	checkbutton $inner.gridz \
1762	-text "Show Z Grid" \
1763	-variable [itcl::scope _settings(axisZGrid)] \
1764	-command [itcl::code $this AdjustSetting axisZGrid] \
1765	-font "Arial 9"
1766
1767	label $inner.mode_l -text "Mode" -font "Arial 9"
1768
1769	itk_component add axisMode {
1770	Rappture::Combobox $inner.mode -width 10 -editable no
1771	}
1772	$inner.mode choices insert end \
1773	"static_triad" "static" \
1774	"closest_triad" "closest" \
1775	"furthest_triad" "farthest" \
1776	"outer_edges" "outer"
1777	$itk_component(axisMode) value "static"
1778	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisMode]
1779
1780	blt::table $inner \
1781	0,0 $inner.visible -anchor w -cspan 2 \
1782	1,0 $inner.labels -anchor w -cspan 2 \
1783	2,0 $inner.gridx -anchor w -cspan 2 \
1784	3,0 $inner.gridy -anchor w -cspan 2 \
1785	4,0 $inner.gridz -anchor w -cspan 2 \
1786	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1787	6,0 $inner.mode -fill x -cspan 2
1788
1789	blt::table configure $inner r* c* -resize none
1790	blt::table configure $inner r7 c1 -resize expand
1791	}
1792
1793
1794	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1795	set inner [$itk_component(main) insert end \
1796	-title "Camera Settings" \
1797	-icon [Rappture::icon camera]]
1798	$inner configure -borderwidth 4
1799
1800	label $inner.view_l -text "view" -font "Arial 9"
1801	set f [frame $inner.view]
1802	foreach side { front back left right top bottom } {
1803	button $f.$side -image [Rappture::icon view$side] \
1804	-command [itcl::code $this SetOrientation $side]
1805	Rappture::Tooltip::for $f.$side "Change the view to $side"
1806	pack $f.$side -side left
1807	}
1808
1809	blt::table $inner \
1810	0,0 $inner.view_l -anchor e -pady 2 \
1811	0,1 $inner.view -anchor w -pady 2
1812
1813	set labels { qx qy qz qw xpan ypan zoom }
1814	set row 1
1815	foreach tag $labels {
1816	label $inner.${tag}label -text $tag -font "Arial 9"
1817	entry $inner.${tag} -font "Arial 9" -bg white \
1818	-textvariable [itcl::scope _view($tag)]
1819	bind $inner.${tag} <KeyPress-Return> \
1820	[itcl::code $this camera set ${tag}]
1821	blt::table $inner \
1822	$row,0 $inner.${tag}label -anchor e -pady 2 \
1823	$row,1 $inner.${tag} -anchor w -pady 2
1824	blt::table configure $inner r$row -resize none
1825	incr row
1826	}
1827	checkbutton $inner.ortho \
1828	-text "Orthographic Projection" \
1829	-variable [itcl::scope _view(ortho)] \
1830	-command [itcl::code $this camera set ortho] \
1831	-font "Arial 9"
1832	blt::table $inner \
1833	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1834	blt::table configure $inner r$row -resize none
1835	incr row
1836
1837	blt::table configure $inner c* r* -resize none
1838	blt::table configure $inner c2 -resize expand
1839	blt::table configure $inner r$row -resize expand
1840	}
1841
1842	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1843
1844	set fg [option get $itk_component(hull) font Font]
1845
1846	set inner [$itk_component(main) insert end \
1847	-title "Cutplane Settings" \
1848	-icon [Rappture::icon cutbutton]]
1849
1850	$inner configure -borderwidth 4
1851
1852	checkbutton $inner.visible \
1853	-text "Cutplanes" \
1854	-variable [itcl::scope _settings(cutplaneVisible)] \
1855	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1856	-font "Arial 9"
1857
1858	checkbutton $inner.wireframe \
1859	-text "Wireframe" \
1860	-variable [itcl::scope _settings(cutplaneWireframe)] \
1861	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1862	-font "Arial 9"
1863
1864	checkbutton $inner.lighting \
1865	-text "Enable Lighting" \
1866	-variable [itcl::scope _settings(cutplaneLighting)] \
1867	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1868	-font "Arial 9"
1869
1870	checkbutton $inner.edges \
1871	-text "Edges" \
1872	-variable [itcl::scope _settings(cutplaneEdges)] \
1873	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1874	-font "Arial 9"
1875
1876	checkbutton $inner.preinterp \
1877	-text "Interpolate Scalars" \
1878	-variable [itcl::scope _settings(cutplanePreinterp)] \
1879	-command [itcl::code $this AdjustSetting cutplanePreinterp] \
1880	-font "Arial 9"
1881
1882	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1883	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1884	-variable [itcl::scope _settings(cutplaneOpacity)] \
1885	-width 10 \
1886	-showvalue off \
1887	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1888	$inner.opacity set $_settings(cutplaneOpacity)
1889
1890	# X-value slicer...
1891	itk_component add xbutton {
1892	Rappture::PushButton $inner.xbutton \
1893	-onimage [Rappture::icon x-cutplane-red] \
1894	-offimage [Rappture::icon x-cutplane-red] \
1895	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1896	-variable [itcl::scope _settings(cutplaneXVisible)] \
1897	}
1898	Rappture::Tooltip::for $itk_component(xbutton) \
1899	"Toggle the X-axis cutplane on/off"
1900	$itk_component(xbutton) select
1901	itk_component add xposition {
1902	::scale $inner.xval -from 100 -to 0 \
1903	-width 10 -orient vertical -showvalue yes \
1904	-borderwidth 1 -highlightthickness 0 \
1905	-command [itcl::code $this EventuallySetCutplane x] \
1906	-variable [itcl::scope _settings(cutplaneXPosition)] \
1907	-foreground red2 -font "Arial 9 bold"
1908	} {
1909	usual
1910	ignore -borderwidth -highlightthickness -foreground -font -background
1911	}
1912	# Set the default cutplane value before disabling the scale.
1913	$itk_component(xposition) set 50
1914	$itk_component(xposition) configure -state disabled
1915	Rappture::Tooltip::for $itk_component(xposition) \
1916	"@[itcl::code $this Slice tooltip x]"
1917
1918	# Y-value slicer...
1919	itk_component add ybutton {
1920	Rappture::PushButton $inner.ybutton \
1921	-onimage [Rappture::icon y-cutplane-green] \
1922	-offimage [Rappture::icon y-cutplane-green] \
1923	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1924	-variable [itcl::scope _settings(cutplaneYVisible)] \
1925	}
1926	Rappture::Tooltip::for $itk_component(ybutton) \
1927	"Toggle the Y-axis cutplane on/off"
1928	$itk_component(ybutton) select
1929
1930	itk_component add yposition {
1931	::scale $inner.yval -from 100 -to 0 \
1932	-width 10 -orient vertical -showvalue yes \
1933	-borderwidth 1 -highlightthickness 0 \
1934	-command [itcl::code $this EventuallySetCutplane y] \
1935	-variable [itcl::scope _settings(cutplaneYPosition)] \
1936	-foreground green3 -font "Arial 9 bold"
1937	} {
1938	usual
1939	ignore -borderwidth -highlightthickness -foreground -font
1940	}
1941	Rappture::Tooltip::for $itk_component(yposition) \
1942	"@[itcl::code $this Slice tooltip y]"
1943	# Set the default cutplane value before disabling the scale.
1944	$itk_component(yposition) set 50
1945	$itk_component(yposition) configure -state disabled
1946
1947	# Z-value slicer...
1948	itk_component add zbutton {
1949	Rappture::PushButton $inner.zbutton \
1950	-onimage [Rappture::icon z-cutplane-blue] \
1951	-offimage [Rappture::icon z-cutplane-blue] \
1952	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1953	-variable [itcl::scope _settings(cutplaneZVisible)] \
1954	} {
1955	usual
1956	ignore -foreground
1957	}
1958	Rappture::Tooltip::for $itk_component(zbutton) \
1959	"Toggle the Z-axis cutplane on/off"
1960	$itk_component(zbutton) select
1961
1962	itk_component add zposition {
1963	::scale $inner.zval -from 100 -to 0 \
1964	-width 10 -orient vertical -showvalue yes \
1965	-borderwidth 1 -highlightthickness 0 \
1966	-command [itcl::code $this EventuallySetCutplane z] \
1967	-variable [itcl::scope _settings(cutplaneZPosition)] \
1968	-foreground blue3 -font "Arial 9 bold"
1969	} {
1970	usual
1971	ignore -borderwidth -highlightthickness -foreground -font
1972	}
1973	$itk_component(zposition) set 50
1974	$itk_component(zposition) configure -state disabled
1975	Rappture::Tooltip::for $itk_component(zposition) \
1976	"@[itcl::code $this Slice tooltip z]"
1977
1978	blt::table $inner \
1979	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
1980	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
1981	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
1982	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1983	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
1984	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1985	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1986	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
1987	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
1988	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
1989	6,1 $inner.xval -fill y -rspan 4 \
1990	6,2 $inner.yval -fill y -rspan 4 \
1991	6,3 $inner.zval -fill y -rspan 4 \
1992
1993
1994	blt::table configure $inner r* c* -resize none
1995	blt::table configure $inner r9 c4 -resize expand
1996	}
1997
1998
1999
2000	#
2001	# camera --
2002	#
2003	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2004	switch -- $option {
2005	"show" {
2006	puts [array get _view]
2007	}
2008	"set" {
2009	set who [lindex $args 0]
2010	set x $_view($who)
2011	set code [catch { string is double $x } result]
2012	if { $code != 0 \|\| !$result } {
2013	return
2014	}
2015	switch -- $who {
2016	"ortho" {
2017	if {$_view(ortho)} {
2018	SendCmd "camera mode ortho"
2019	} else {
2020	SendCmd "camera mode persp"
2021	}
2022	}
2023	"xpan" - "ypan" {
2024	PanCamera
2025	}
2026	"qx" - "qy" - "qz" - "qw" {
2027	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2028	$_arcball quaternion $q
2029	EventuallyRotate $q
2030	}
2031	"zoom" {
2032	SendCmd "camera zoom $_view(zoom)"
2033	}
2034	}
2035	}
2036	}
2037	}
2038
2039	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2040	set bytes ""
2041	foreach dataobj [get] {
2042	foreach cname [$dataobj components] {
2043	set tag $dataobj-$cname
2044	set contents [$dataobj vtkdata $cname]
2045	append bytes "$contents\n"
2046	}
2047	}
2048	return [list .vtk $bytes]
2049	}
2050
2051	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2052	if { [image width $_image(download)] > 0 &&
2053	[image height $_image(download)] > 0 } {
2054	set bytes [$_image(download) data -format "jpeg -quality 100"]
2055	set bytes [Rappture::encoding::decode -as b64 $bytes]
2056	return [list .jpg $bytes]
2057	}
2058	return ""
2059	}
2060
2061	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2062	Rappture::Balloon $popup \
2063	-title "[Rappture::filexfer::label downloadWord] as..."
2064	set inner [$popup component inner]
2065	label $inner.summary -text "" -anchor w
2066	radiobutton $inner.vtk_button -text "VTK data file" \
2067	-variable [itcl::scope _downloadPopup(format)] \
2068	-font "Arial 9 " \
2069	-value vtk
2070	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2071	radiobutton $inner.image_button -text "Image File" \
2072	-variable [itcl::scope _downloadPopup(format)] \
2073	-font "Arial 9 " \
2074	-value image
2075	Rappture::Tooltip::for $inner.image_button \
2076	"Save as digital image."
2077
2078	button $inner.ok -text "Save" \
2079	-highlightthickness 0 -pady 2 -padx 3 \
2080	-command $command \
2081	-compound left \
2082	-image [Rappture::icon download]
2083
2084	button $inner.cancel -text "Cancel" \
2085	-highlightthickness 0 -pady 2 -padx 3 \
2086	-command [list $popup deactivate] \
2087	-compound left \
2088	-image [Rappture::icon cancel]
2089
2090	blt::table $inner \
2091	0,0 $inner.summary -cspan 2 \
2092	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2093	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2094	4,1 $inner.cancel -width .9i -fill y \
2095	4,0 $inner.ok -padx 2 -width .9i -fill y
2096	blt::table configure $inner r3 -height 4
2097	blt::table configure $inner r4 -pady 4
2098	raise $inner.image_button
2099	$inner.vtk_button invoke
2100	return $inner
2101	}
2102
2103	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2104	# Parse style string.
2105	set tag $dataobj-$comp
2106	array set style {
2107	-color BCGYR
2108	-edges 0
2109	-edgecolor black
2110	-linewidth 1.0
2111	-opacity 0.6
2112	-wireframe 0
2113	-lighting 1
2114	-outline 0
2115	-levels 10
2116	}
2117	array set style [$dataobj style $comp]
2118	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2119	set style(-opacity) 1
2120	}
2121	SendCmd "cutplane add $tag"
2122	SendCmd "cutplane visible 0 $tag"
2123
2124	# This is too complicated. We want to set the colormap, number of
2125	# isolines and opacity for the dataset. They can be the default values,
2126	# the style hints loaded with the dataset, or set by user controls. As
2127	# datasets get loaded, they first use the defaults that are overidden
2128	# by the style hints. If the user changes the global controls, then that
2129	# overrides everything else. I don't know what it means when global
2130	# controls are specified as style hints by each dataset. It complicates
2131	# the code to handle aberrant cases.
2132
2133	if { $_changed(isosurfaceOpacity) } {
2134	set style(-opacity) $_settings(isosurfaceOpacity)
2135	}
2136	if { $_changed(numContours) } {
2137	set style(-levels) $_settings(numContours)
2138	}
2139	if { $_changed(colormap) } {
2140	set style(-color) $_settings(colormap)
2141	}
2142	if { $_currentColormap == "" } {
2143	SetCurrentColormap $style(-color)
2144	$itk_component(colormap) value $style(-color)
2145	}
2146	set _currentOpacity $style(-opacity)
2147	if { $_currentNumContours != $style(-levels) } {
2148	set _currentNumContours $style(-levels)
2149	if { $_currentNumContours < 1 } {
2150	set _currentNumContours 1
2151	}
2152	set _settings(numContours) $_currentNumContours
2153	$itk_component(numcontours) value $_currentNumContours
2154	UpdateContourList
2155	DrawLegend
2156	}
2157	SendCmd [list contour3d add contourlist $_contourList $tag]
2158	SendCmd "contour3d edges $style(-edges) $tag"
2159	SendCmd "outline add $tag"
2160	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2161	SendCmd "outline visible $style(-outline) $tag"
2162	set _settings(isosurfaceOutline) $style(-outline)
2163	set _settings(isosurfaceEdges) $style(-edges)
2164	#SendCmd "contour3d color [Color2RGB $settings(-color)] $tag"
2165	SendCmd "contour3d lighting $style(-lighting) $tag"
2166	set _settings(isosurfaceLighting) $style(-lighting)
2167	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2168	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2169	SendCmd "contour3d opacity $_currentOpacity $tag"
2170	set _settings(isosurfaceOpacity) $style(-opacity)
2171	SetCurrentColormap $style(-color)
2172	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2173	set _settings(isosurfaceWireframe) $style(-wireframe)
2174	set _settings(isosurfaceOpacity) [expr $style(-opacity) * 100.0]
2175	}
2176
2177	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2178	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2179	return 0
2180	}
2181	return 1
2182	}
2183
2184	#
2185	# EnterLegend --
2186	#
2187	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2188	SetLegendTip $x $y
2189	}
2190
2191	#
2192	# MotionLegend --
2193	#
2194	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2195	Rappture::Tooltip::tooltip cancel
2196	set c $itk_component(view)
2197	set cw [winfo width $c]
2198	set ch [winfo height $c]
2199	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2200	SetLegendTip $x $y
2201	}
2202	}
2203
2204	#
2205	# LeaveLegend --
2206	#
2207	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2208	Rappture::Tooltip::tooltip cancel
2209	.rappturetooltip configure -icon ""
2210	}
2211
2212	#
2213	# SetLegendTip --
2214	#
2215	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2216	set fname $_curFldName
2217	set c $itk_component(view)
2218	set w [winfo width $c]
2219	set h [winfo height $c]
2220
2221	set font "Arial 8"
2222	set lineht [font metrics $font -linespace]
2223
2224	set ih [image height $_image(legend)]
2225	set iy [expr $y - ($lineht + 2)]
2226
2227	if { [string match "component*" $fname] } {
2228	set title ""
2229	} else {
2230	if { [info exists _fields($fname)] } {
2231	foreach { title units } $_fields($fname) break
2232	if { $units != "" } {
2233	set title [format "%s (%s)" $title $units]
2234	}
2235	} else {
2236	set title $fname
2237	}
2238	}
2239	# If there's a legend title, increase the offset by the line height.
2240	if { $title != "" } {
2241	incr iy -$lineht
2242	}
2243	# Make a swatch of the selected color
2244	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2245	return
2246	}
2247	if { ![info exists _image(swatch)] } {
2248	set _image(swatch) [image create photo -width 24 -height 24]
2249	}
2250	set color [eval format "\#%02x%02x%02x" $pixel]
2251	$_image(swatch) put black -to 0 0 23 23
2252	$_image(swatch) put $color -to 1 1 22 22
2253	.rappturetooltip configure -icon $_image(swatch)
2254
2255	# Compute the value of the point
2256	if { [info exists _limits($_curFldName)] } {
2257	foreach { vmin vmax } $_limits($_curFldName) break
2258	set t [expr 1.0 - (double($iy) / double($ih-1))]
2259	set value [expr $t * ($vmax - $vmin) + $vmin]
2260	} else {
2261	set value 0.0
2262	}
2263	set tx [expr $x + 15]
2264	set ty [expr $y - 5]
2265	if { [info exists _isolines($y)] } {
2266	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2267	} else {
2268	Rappture::Tooltip::text $c [format "$title %g" $value]
2269	}
2270	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2271	}
2272
2273
2274	# ----------------------------------------------------------------------
2275	# USAGE: Slice move x\|y\|z <newval>
2276	#
2277	# Called automatically when the user drags the slider to move the
2278	# cut plane that slices 3D data. Gets the current value from the
2279	# slider and moves the cut plane to the appropriate point in the
2280	# data set.
2281	# ----------------------------------------------------------------------
2282	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2283	switch -- $option {
2284	"move" {
2285	set axis [lindex $args 0]
2286	set newval [lindex $args 1]
2287	if {[llength $args] != 2} {
2288	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2289	}
2290	set newpos [expr {0.01*$newval}]
2291	SendCmd "cutplane slice $axis $newpos"
2292	}
2293	"tooltip" {
2294	set axis [lindex $args 0]
2295	set val [$itk_component(${axis}position) get]
2296	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2297	}
2298	default {
2299	error "bad option \"$option\": should be axis, move, or tooltip"
2300	}
2301	}
2302	}
2303
2304	#
2305	# ReceiveLegend --
2306	#
2307	# Invoked automatically whenever the "legend" command comes in from
2308	# the rendering server. Indicates that binary image data with the
2309	# specified <size> will follow.
2310	#
2311	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2312	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2313	set _title $title
2314	regsub {\(mag\)} $title "" _title
2315	if { [IsConnected] } {
2316	set bytes [ReceiveBytes $size]
2317	if { ![info exists _image(legend)] } {
2318	set _image(legend) [image create photo]
2319	}
2320	$_image(legend) configure -data $bytes
2321	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2322	if { [catch {DrawLegend} errs] != 0 } {
2323	global errorInfo
2324	puts stderr "errs=$errs errorInfo=$errorInfo"
2325	}
2326	}
2327	}
2328
2329	#
2330	# DrawLegend --
2331	#
2332	# Draws the legend in the own canvas on the right side of the plot area.
2333	#
2334	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2335	set fname $_curFldName
2336	set c $itk_component(view)
2337	set w [winfo width $c]
2338	set h [winfo height $c]
2339	set font "Arial 8"
2340	set lineht [font metrics $font -linespace]
2341
2342	if { [string match "component*" $fname] } {
2343	set title ""
2344	} else {
2345	if { [info exists _fields($fname)] } {
2346	foreach { title units } $_fields($fname) break
2347	if { $units != "" } {
2348	set title [format "%s (%s)" $title $units]
2349	}
2350	} else {
2351	set title $fname
2352	}
2353	}
2354	set x [expr $w - 2]
2355	if { !$_settings(legendVisible) } {
2356	$c delete legend
2357	return
2358	}
2359	if { [$c find withtag "legend"] == "" } {
2360	set y 2
2361	# If there's a legend title, create a text item for the title.
2362	$c create text $x $y \
2363	-anchor ne \
2364	-fill $itk_option(-plotforeground) -tags "title legend" \
2365	-font $font
2366	incr y $lineht
2367	$c create text $x $y \
2368	-anchor ne \
2369	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2370	-font $font
2371	incr y $lineht
2372	$c create image $x $y \
2373	-anchor ne \
2374	-image $_image(legend) -tags "colormap legend"
2375	$c create rectangle $x $y 1 1 \
2376	-fill "" -outline "" -tags "sensor legend"
2377	$c create text $x [expr {$h-2}] \
2378	-anchor se \
2379	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2380	-font $font
2381	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2382	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2383	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2384	}
2385	$c delete isoline
2386	set x2 $x
2387	set iw [image width $_image(legend)]
2388	set ih [image height $_image(legend)]
2389	set x1 [expr $x2 - ($iw*12)/10]
2390	set color $_settings(isolineColor)
2391	# Draw the isolines on the legend.
2392	array unset _isolines
2393	if { $color != "none" && [info exists _limits($_curFldName)] &&
2394	$_settings(numContours) > 0 } {
2395
2396	foreach { vmin vmax } $_limits($_curFldName) break
2397	set range [expr double($vmax - $vmin)]
2398	if { $range <= 0.0 } {
2399	set range 1.0; # Min is greater or equal to max.
2400	}
2401	set tags "isoline legend"
2402	set offset [expr 2 + $lineht]
2403	if { $title != "" } {
2404	incr offset $lineht
2405	}
2406	foreach value $_contourList {
2407	set norm [expr 1.0 - (($value - $vmin) / $range)]
2408	set y1 [expr int(round(($norm * $ih) + $offset))]
2409	for { set off 0 } { $off < 3 } { incr off } {
2410	set _isolines([expr $y1 + $off]) $value
2411	set _isolines([expr $y1 - $off]) $value
2412	}
2413	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2414	}
2415	}
2416
2417	$c bind title <ButtonPress> [itcl::code $this Combo post]
2418	$c bind title <Enter> [itcl::code $this Combo activate]
2419	$c bind title <Leave> [itcl::code $this Combo deactivate]
2420	# Reset the item coordinates according the current size of the plot.
2421	$c itemconfigure title -text $title
2422	if { [info exists _limits($_curFldName)] } {
2423	foreach { vmin vmax } $_limits($_curFldName) break
2424	$c itemconfigure vmin -text [format %g $vmin]
2425	$c itemconfigure vmax -text [format %g $vmax]
2426	}
2427	set y 2
2428	# If there's a legend title, move the title to the correct position
2429	if { $title != "" } {
2430	$c itemconfigure title -text $title
2431	$c coords title $x $y
2432	incr y $lineht
2433	$c raise title
2434	}
2435	$c coords vmax $x $y
2436	incr y $lineht
2437	$c coords colormap $x $y
2438	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2439	$c raise sensor
2440	$c coords vmin $x [expr {$h - 2}]
2441	}
2442
2443	# ----------------------------------------------------------------------
2444	# USAGE: _dropdown post
2445	# USAGE: _dropdown unpost
2446	# USAGE: _dropdown select
2447	#
2448	# Used internally to handle the dropdown list for this combobox. The
2449	# post/unpost options are invoked when the list is posted or unposted
2450	# to manage the relief of the controlling button. The select option
2451	# is invoked whenever there is a selection from the list, to assign
2452	# the value back to the gauge.
2453	# ----------------------------------------------------------------------
2454	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
2455	set c $itk_component(view)
2456	switch -- $option {
2457	post {
2458	foreach { x1 y1 x2 y2 } [$c bbox title] break
2459	set cw [winfo width $itk_component(view)]
2460	set mw [winfo reqwidth $itk_component(fieldmenu)]
2461	set x1 [expr $cw - $mw]
2462	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2463	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2464	tk_popup $itk_component(fieldmenu) $x $y
2465	}
2466	activate {
2467	$c itemconfigure title -fill red
2468	}
2469	deactivate {
2470	$c itemconfigure title -fill $itk_option(-plotforeground)
2471	}
2472	invoke {
2473	$itk_component(field) value $_curFldLabel
2474	AdjustSetting field
2475	}
2476	default {
2477	error "bad option \"$option\": should be post, unpost, select"
2478	}
2479	}
2480	}
2481
2482	#
2483	# SetCurrentColormap --
2484	#
2485	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
2486	# Keep track of the colormaps that we build.
2487	if { ![info exists _colormaps($name)] } {
2488	BuildColormap $name
2489	set _colormaps($name) 1
2490	}
2491	set _currentColormap $name
2492	SendCmd "contour3d colormap $_currentColormap"
2493	SendCmd "cutplane colormap $_currentColormap"
2494	}
2495
2496	#
2497	# BuildColormap --
2498	#
2499	# Build the designated colormap on the server.
2500	#
2501	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
2502	set cmap [ColorsToColormap $name]
2503	if { [llength $cmap] == 0 } {
2504	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2505	}
2506	set wmap "0.0 1.0 1.0 1.0"
2507	SendCmd "colormap add $name { $cmap } { $wmap }"
2508	}
2509
2510	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
2511	array set positions {
2512	front "1 0 0 0"
2513	back "0 0 1 0"
2514	left "0.707107 0 -0.707107 0"
2515	right "0.707107 0 0.707107 0"
2516	top "0.707107 -0.707107 0 0"
2517	bottom "0.707107 0.707107 0 0"
2518	}
2519	foreach name { qw qx qy qz } value $positions($side) {
2520	set _view($name) $value
2521	}
2522	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2523	$_arcball quaternion $q
2524	SendCmd "camera orient $q"
2525	SendCmd "camera reset"
2526	set _view(xpan) 0
2527	set _view(ypan) 0
2528	set _view(zoom) 1.0
2529	}
2530
2531	itcl::body Rappture::VtkIsosurfaceViewer::UpdateContourList {} {
2532	if { ![info exists _limits($_curFldName)] } {
2533	return
2534	}
2535	foreach { vmin vmax } $_limits($_curFldName) break
2536	set v [blt::vector create \#auto]
2537	$v seq $vmin $vmax [expr $_currentNumContours+2]
2538	$v delete end 0
2539	set _contourList [$v range 0 end]
2540	blt::vector destroy $v
2541	}

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