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source: trunk/gui/scripts/vtkisosurfaceviewer.tcl @ 4343

Last change on this file since 4343 was 4342, checked in by ldelgass, 10 years ago
Fix background,isolinecolor settings
File size: 86.5 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkisosurfaceviewer - Vtk 3D contour object viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2005 Purdue Research Foundation
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkIsosurfaceViewer.width 4i widgetDefault
19	option add VtkIsosurfaceViewercursor crosshair widgetDefault
20	option add *VtkIsosurfaceViewer.height 4i widgetDefault
21	option add *VtkIsosurfaceViewer.foreground black widgetDefault
22	option add *VtkIsosurfaceViewer.controlBackground gray widgetDefault
23	option add *VtkIsosurfaceViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkIsosurfaceViewer.plotBackground black widgetDefault
25	option add *VtkIsosurfaceViewer.plotForeground white widgetDefault
26	option add *VtkIsosurfaceViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkIsosurfaceViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkIsosurfaceViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkIsosurfaceViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method limits { colormap }
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method Connect {}
66	protected method CurrentDatasets {args}
67	protected method Disconnect {}
68	protected method DoResize {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method ReceiveLegend { colormap title vmin vmax size }
78	protected method Rotate {option x y}
79	protected method Zoom {option}
80
81	# The following methods are only used by this class.
82	private method BuildAxisTab {}
83	private method BuildCameraTab {}
84	private method BuildColormap { name }
85	private method BuildCutplaneTab {}
86	private method BuildDownloadPopup { widget command }
87	private method BuildIsosurfaceTab {}
88	private method Combo { option }
89	private method DrawLegend {}
90	private method EnterLegend { x y }
91	private method EventuallyResize { w h }
92	private method EventuallyRotate { q }
93	private method EventuallyRequestLegend {}
94	private method EventuallySetCutplane { axis args }
95	private method GetImage { args }
96	private method GetVtkData { args }
97	private method IsValidObject { dataobj }
98	private method LeaveLegend {}
99	private method MotionLegend { x y }
100	private method PanCamera {}
101	private method RequestLegend {}
102	private method SetLegendTip { x y }
103	private method SetObjectStyle { dataobj comp }
104	private method Slice {option args}
105	private method SetCurrentColormap { color }
106	private method SetOrientation { side }
107	private method UpdateContourList {}
108
109	private variable _arcball ""
110
111	private variable _dlist "" ; # list of data objects
112	private variable _obj2datasets
113	private variable _obj2ovride ; # maps dataobj => style override
114	private variable _datasets ; # contains all the dataobj-component
115	; # datasets in the server
116	private variable _colormaps ; # contains all the colormaps
117	; # in the server.
118	# The name of the current colormap used. The colormap is global to all
119	# heightmaps displayed.
120	private variable _currentColormap ""
121	private variable _currentNumContours -1
122	private variable _currentOpacity ""
123
124	private variable _dataset2style ;# maps dataobj-component to transfunc
125
126	private variable _click ; # info used for rotate operations
127	private variable _limits ; # autoscale min/max for all axes
128	private variable _view ; # view params for 3D view
129	private variable _settings
130	private variable _style; # Array of current component styles.
131	private variable _changed
132	private variable _initialStyle; # Array of initial component styles.
133	private variable _reset 1; # indicates if camera needs to be reset
134	# to starting position.
135
136	private variable _first "" ; # This is the topmost dataset.
137	private variable _start 0
138	private variable _title ""
139	private variable _isolines
140	private variable _contourList ""
141
142	common _downloadPopup; # download options from popup
143	private common _hardcopy
144	private variable _width 0
145	private variable _height 0
146	private variable _resizePending 0
147	private variable _rotatePending 0
148	private variable _cutplanePending 0
149	private variable _legendPending 0
150	private variable _field ""
151	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
152	private variable _fieldNames {}
153	private variable _fields
154	private variable _curFldName ""
155	private variable _curFldLabel ""
156	}
157
158	itk::usual VtkIsosurfaceViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
167	package require vtk
168	set _serverType "vtkvis"
169
170	# Rebuild event
171	$_dispatcher register !rebuild
172	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
173
174	# Resize event
175	$_dispatcher register !resize
176	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
177
178	# Rotate event
179	$_dispatcher register !rotate
180	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
181
182	# Legend event
183	$_dispatcher register !legend
184	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
185
186	# X-Cutplane event
187	$_dispatcher register !xcutplane
188	$_dispatcher dispatch $this !xcutplane \
189	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
190
191	# Y-Cutplane event
192	$_dispatcher register !ycutplane
193	$_dispatcher dispatch $this !ycutplane \
194	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
195
196	# Z-Cutplane event
197	$_dispatcher register !zcutplane
198	$_dispatcher dispatch $this !zcutplane \
199	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
200
201	#
202	# Populate parser with commands handle incoming requests
203	#
204	$_parser alias image [itcl::code $this ReceiveImage]
205	$_parser alias dataset [itcl::code $this ReceiveDataset]
206	$_parser alias legend [itcl::code $this ReceiveLegend]
207
208	# Initialize the view to some default parameters.
209	array set _view {
210	qw 0.853553
211	qx -0.353553
212	qy 0.353553
213	qz 0.146447
214	zoom 1.0
215	xpan 0
216	ypan 0
217	ortho 0
218	}
219	set _arcball [blt::arcball create 100 100]
220	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
221	$_arcball quaternion $q
222
223	array set _settings {
224	-background black
225	-colormap BCGYR
226	-colormapvisible 1
227	-field "Default"
228	-isolinecolor white
229	-axesvisible 1
230	-axislabelsvisible 1
231	-cutplaneedges 0
232	-cutplanelighting 1
233	-cutplaneopacity 100
234	-cutplanepreinterp 1
235	-cutplanesvisible 0
236	-cutplanewireframe 0
237	-isosurfaceedges 0
238	-isosurfacelighting 1
239	-isosurfaceopacity 60
240	-isosurfaceoutline 0
241	-isosurfacevisible 1
242	-isosurfacewireframe 0
243	-legendvisible 1
244	-numcontours 10
245	-xaxisgrid 0
246	-xcutplaneposition 50
247	-xcutplanevisible 1
248	-yaxisgrid 0
249	-ycutplaneposition 50
250	-ycutplanevisible 1
251	-zaxisgrid 0
252	-zcutplaneposition 50
253	-zcutplanevisible 1
254	}
255	array set _changed {
256	-isosurfaceopacity 0
257	-colormap 0
258	-numcontours 0
259	}
260
261	itk_component add view {
262	canvas $itk_component(plotarea).view \
263	-highlightthickness 0 -borderwidth 0
264	} {
265	usual
266	ignore -highlightthickness -borderwidth -background
267	}
268
269	itk_component add fieldmenu {
270	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
271	-tearoff 0
272	} {
273	usual
274	ignore -background -foreground -relief -tearoff
275	}
276	set c $itk_component(view)
277	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
278	bind $c <4> [itcl::code $this Zoom in 0.25]
279	bind $c <5> [itcl::code $this Zoom out 0.25]
280	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
281	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
282	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
283	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
284	bind $c <Enter> "focus %W"
285	bind $c <Control-F1> [itcl::code $this ToggleConsole]
286
287	# Fix the scrollregion in case we go off screen
288	$c configure -scrollregion [$c bbox all]
289
290	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
291	set _map(cwidth) -1
292	set _map(cheight) -1
293	set _map(zoom) 1.0
294	set _map(original) ""
295
296	set f [$itk_component(main) component controls]
297	itk_component add reset {
298	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon reset-view] \
301	-command [itcl::code $this Zoom reset]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(reset) -side top -padx 2 -pady 2
307	Rappture::Tooltip::for $itk_component(reset) \
308	"Reset the view to the default zoom level"
309
310	itk_component add zoomin {
311	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
312	-highlightthickness 0 \
313	-image [Rappture::icon zoom-in] \
314	-command [itcl::code $this Zoom in]
315	} {
316	usual
317	ignore -highlightthickness
318	}
319	pack $itk_component(zoomin) -side top -padx 2 -pady 2
320	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
321
322	itk_component add zoomout {
323	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
324	-highlightthickness 0 \
325	-image [Rappture::icon zoom-out] \
326	-command [itcl::code $this Zoom out]
327	} {
328	usual
329	ignore -highlightthickness
330	}
331	pack $itk_component(zoomout) -side top -padx 2 -pady 2
332	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
333
334	itk_component add contour {
335	Rappture::PushButton $f.contour \
336	-onimage [Rappture::icon volume-on] \
337	-offimage [Rappture::icon volume-off] \
338	-variable [itcl::scope _settings(-isosurfacevisible)] \
339	-command [itcl::code $this AdjustSetting -isosurfacevisible]
340	}
341	$itk_component(contour) select
342	Rappture::Tooltip::for $itk_component(contour) \
343	"Don't display the isosurface"
344	pack $itk_component(contour) -padx 2 -pady 2
345
346	itk_component add cutplane {
347	Rappture::PushButton $f.cutplane \
348	-onimage [Rappture::icon cutbutton] \
349	-offimage [Rappture::icon cutbutton] \
350	-variable [itcl::scope _settings(-cutplanesvisible)] \
351	-command [itcl::code $this AdjustSetting -cutplanesvisible]
352	}
353	Rappture::Tooltip::for $itk_component(cutplane) \
354	"Show/Hide cutplanes"
355	pack $itk_component(cutplane) -padx 2 -pady 2
356
357
358	if { [catch {
359	BuildIsosurfaceTab
360	BuildCutplaneTab
361	BuildAxisTab
362	BuildCameraTab
363	} errs] != 0 } {
364	puts stderr errs=$errs
365	}
366	# Legend
367
368	set _image(legend) [image create photo]
369	itk_component add legend {
370	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
371	} {
372	usual
373	ignore -highlightthickness
374	rename -background -plotbackground plotBackground Background
375	}
376
377	# Hack around the Tk panewindow. The problem is that the requested
378	# size of the 3d view isn't set until an image is retrieved from
379	# the server. So the panewindow uses the tiny size.
380	set w 10000
381	pack forget $itk_component(view)
382	blt::table $itk_component(plotarea) \
383	0,0 $itk_component(view) -fill both -reqwidth $w
384	blt::table configure $itk_component(plotarea) c1 -resize none
385
386	# Bindings for rotation via mouse
387	bind $itk_component(view) <ButtonPress-1> \
388	[itcl::code $this Rotate click %x %y]
389	bind $itk_component(view) <B1-Motion> \
390	[itcl::code $this Rotate drag %x %y]
391	bind $itk_component(view) <ButtonRelease-1> \
392	[itcl::code $this Rotate release %x %y]
393
394	# Bindings for panning via mouse
395	bind $itk_component(view) <ButtonPress-2> \
396	[itcl::code $this Pan click %x %y]
397	bind $itk_component(view) <B2-Motion> \
398	[itcl::code $this Pan drag %x %y]
399	bind $itk_component(view) <ButtonRelease-2> \
400	[itcl::code $this Pan release %x %y]
401
402	#bind $itk_component(view) <ButtonRelease-3> \
403	# [itcl::code $this Pick %x %y]
404
405	# Bindings for panning via keyboard
406	bind $itk_component(view) <KeyPress-Left> \
407	[itcl::code $this Pan set -10 0]
408	bind $itk_component(view) <KeyPress-Right> \
409	[itcl::code $this Pan set 10 0]
410	bind $itk_component(view) <KeyPress-Up> \
411	[itcl::code $this Pan set 0 -10]
412	bind $itk_component(view) <KeyPress-Down> \
413	[itcl::code $this Pan set 0 10]
414	bind $itk_component(view) <Shift-KeyPress-Left> \
415	[itcl::code $this Pan set -2 0]
416	bind $itk_component(view) <Shift-KeyPress-Right> \
417	[itcl::code $this Pan set 2 0]
418	bind $itk_component(view) <Shift-KeyPress-Up> \
419	[itcl::code $this Pan set 0 -2]
420	bind $itk_component(view) <Shift-KeyPress-Down> \
421	[itcl::code $this Pan set 0 2]
422
423	# Bindings for zoom via keyboard
424	bind $itk_component(view) <KeyPress-Prior> \
425	[itcl::code $this Zoom out]
426	bind $itk_component(view) <KeyPress-Next> \
427	[itcl::code $this Zoom in]
428
429	bind $itk_component(view) <Enter> "focus $itk_component(view)"
430
431	if {[string equal "x11" [tk windowingsystem]]} {
432	# Bindings for zoom via mouse
433	bind $itk_component(view) <4> [itcl::code $this Zoom out]
434	bind $itk_component(view) <5> [itcl::code $this Zoom in]
435	}
436
437	set _image(download) [image create photo]
438
439	eval itk_initialize $args
440
441	EnableWaitDialog 500
442	Connect
443	update
444	}
445
446	# ----------------------------------------------------------------------
447	# DESTRUCTOR
448	# ----------------------------------------------------------------------
449	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
450	Disconnect
451	image delete $_image(plot)
452	image delete $_image(download)
453	catch { blt::arcball destroy $_arcball }
454	}
455
456	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
457	if { $_width < 2 } {
458	set _width 500
459	}
460	if { $_height < 2 } {
461	set _height 500
462	}
463	set _start [clock clicks -milliseconds]
464	SendCmd "screen size $_width $_height"
465
466	EventuallyRequestLegend
467	set _resizePending 0
468	}
469
470	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
471	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
472	SendCmd "camera orient $q"
473	set _rotatePending 0
474	}
475
476	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
477	if { !$_legendPending } {
478	set _legendPending 1
479	$_dispatcher event -idle !legend
480	}
481	}
482
483	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
484	set _width $w
485	set _height $h
486	$_arcball resize $w $h
487	if { !$_resizePending } {
488	set _resizePending 1
489	$_dispatcher event -after 400 !resize
490	}
491	}
492
493	set rotate_delay 100
494
495	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
496	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
497	if { !$_rotatePending } {
498	set _rotatePending 1
499	global rotate_delay
500	$_dispatcher event -after $rotate_delay !rotate
501	}
502	}
503
504	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
505	if { !$_cutplanePending } {
506	set _cutplanePending 1
507	$_dispatcher event -after 100 !${axis}cutplane
508	}
509	}
510
511	# ----------------------------------------------------------------------
512	# USAGE: add <dataobj> ?<settings>?
513	#
514	# Clients use this to add a data object to the plot. The optional
515	# <settings> are used to configure the plot. Allowed settings are
516	# -color, -brightness, -width, -linestyle, and -raise.
517	# ----------------------------------------------------------------------
518	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
519	if { ![$dataobj isvalid] } {
520	return; # Object doesn't contain valid data.
521	}
522	array set params {
523	-color auto
524	-width 1
525	-linestyle solid
526	-brightness 0
527	-raise 0
528	-description ""
529	-param ""
530	-type ""
531	}
532	array set params $settings
533	set params(-description) ""
534	set params(-param) ""
535	array set params $settings
536
537	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
538	# can't handle -autocolors yet
539	set params(-color) black
540	}
541	set pos [lsearch -exact $_dlist $dataobj]
542	if {$pos < 0} {
543	lappend _dlist $dataobj
544	}
545	set _obj2ovride($dataobj-color) $params(-color)
546	set _obj2ovride($dataobj-width) $params(-width)
547	set _obj2ovride($dataobj-raise) $params(-raise)
548	$_dispatcher event -idle !rebuild
549	}
550
551
552	# ----------------------------------------------------------------------
553	# USAGE: delete ?<dataobj1> <dataobj2> ...?
554	#
555	# Clients use this to delete a dataobj from the plot. If no dataobjs
556	# are specified, then all dataobjs are deleted. No data objects are
557	# deleted. They are only removed from the display list.
558	#
559	# ----------------------------------------------------------------------
560	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
561	if { [llength $args] == 0} {
562	set args $_dlist
563	}
564	# Delete all specified dataobjs
565	set changed 0
566	foreach dataobj $args {
567	set pos [lsearch -exact $_dlist $dataobj]
568	if { $pos < 0 } {
569	continue; # Don't know anything about it.
570	}
571	# Remove it from the dataobj list.
572	set _dlist [lreplace $_dlist $pos $pos]
573	array unset _obj2ovride $dataobj-*
574	array unset _settings $dataobj-*
575	set changed 1
576	}
577	# If anything changed, then rebuild the plot
578	if { $changed } {
579	$_dispatcher event -idle !rebuild
580	}
581	}
582
583	# ----------------------------------------------------------------------
584	# USAGE: get ?-objects?
585	# USAGE: get ?-visible?
586	# USAGE: get ?-image view?
587	#
588	# Clients use this to query the list of objects being plotted, in
589	# order from bottom to top of this result. The optional "-image"
590	# flag can also request the internal images being shown.
591	# ----------------------------------------------------------------------
592	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
593	if {[llength $args] == 0} {
594	set args "-objects"
595	}
596
597	set op [lindex $args 0]
598	switch -- $op {
599	"-objects" {
600	# put the dataobj list in order according to -raise options
601	set dlist {}
602	foreach dataobj $_dlist {
603	if { ![IsValidObject $dataobj] } {
604	continue
605	}
606	if {[info exists _obj2ovride($dataobj-raise)] &&
607	$_obj2ovride($dataobj-raise)} {
608	set dlist [linsert $dlist 0 $dataobj]
609	} else {
610	lappend dlist $dataobj
611	}
612	}
613	return $dlist
614	}
615	"-visible" {
616	set dlist {}
617	foreach dataobj $_dlist {
618	if { ![IsValidObject $dataobj] } {
619	continue
620	}
621	if { ![info exists _obj2ovride($dataobj-raise)] } {
622	# No setting indicates that the object isn't visible.
623	continue
624	}
625	# Otherwise use the -raise parameter to put the object to
626	# the front of the list.
627	if { $_obj2ovride($dataobj-raise) } {
628	set dlist [linsert $dlist 0 $dataobj]
629	} else {
630	lappend dlist $dataobj
631	}
632	}
633	return $dlist
634	}
635	-image {
636	if {[llength $args] != 2} {
637	error "wrong # args: should be \"get -image view\""
638	}
639	switch -- [lindex $args end] {
640	view {
641	return $_image(plot)
642	}
643	default {
644	error "bad image name \"[lindex $args end]\": should be view"
645	}
646	}
647	}
648	default {
649	error "bad option \"$op\": should be -objects or -image"
650	}
651	}
652	}
653
654	# ----------------------------------------------------------------------
655	# USAGE: scale ?<data1> <data2> ...?
656	#
657	# Sets the default limits for the overall plot according to the
658	# limits of the data for all of the given <data> objects. This
659	# accounts for all objects--even those not showing on the screen.
660	# Because of this, the limits are appropriate for all objects as
661	# the user scans through data in the ResultSet viewer.
662	# ----------------------------------------------------------------------
663	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
664	foreach dataobj $args {
665	if { ![$dataobj isvalid] } {
666	continue; # Object doesn't contain valid data.
667	}
668	foreach axis { x y z } {
669	set lim [$dataobj limits $axis]
670	if { ![info exists _limits($axis)] } {
671	set _limits($axis) $lim
672	continue
673	}
674	foreach {min max} $lim break
675	foreach {amin amax} $_limits($axis) break
676	if { $amin > $min } {
677	set amin $min
678	}
679	if { $amax < $max } {
680	set amax $max
681	}
682	set _limits($axis) [list $amin $amax]
683	}
684	foreach { fname lim } [$dataobj fieldlimits] {
685	if { ![info exists _limits($fname)] } {
686	set _limits($fname) $lim
687	continue
688	}
689	foreach {min max} $lim break
690	foreach {fmin fmax} $_limits($fname) break
691	if { $fmin > $min } {
692	set fmin $min
693	}
694	if { $fmax < $max } {
695	set fmax $max
696	}
697	set _limits($fname) [list $fmin $fmax]
698	}
699	}
700	}
701
702	# ----------------------------------------------------------------------
703	# USAGE: download coming
704	# USAGE: download controls <downloadCommand>
705	# USAGE: download now
706	#
707	# Clients use this method to create a downloadable representation
708	# of the plot. Returns a list of the form {ext string}, where
709	# "ext" is the file extension (indicating the type of data) and
710	# "string" is the data itself.
711	# ----------------------------------------------------------------------
712	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
713	switch $option {
714	coming {
715	if {[catch {
716	blt::winop snap $itk_component(plotarea) $_image(download)
717	}]} {
718	$_image(download) configure -width 1 -height 1
719	$_image(download) put #000000
720	}
721	}
722	controls {
723	set popup .vtkviewerdownload
724	if { ![winfo exists .vtkviewerdownload] } {
725	set inner [BuildDownloadPopup $popup [lindex $args 0]]
726	} else {
727	set inner [$popup component inner]
728	}
729	set _downloadPopup(image_controls) $inner.image_frame
730	set num [llength [get]]
731	set num [expr {($num == 1) ? "1 result" : "$num results"}]
732	set word [Rappture::filexfer::label downloadWord]
733	$inner.summary configure -text "$word $num in the following format:"
734	update idletasks ;# Fix initial sizes
735	return $popup
736	}
737	now {
738	set popup .vtkviewerdownload
739	if {[winfo exists .vtkviewerdownload]} {
740	$popup deactivate
741	}
742	switch -- $_downloadPopup(format) {
743	"image" {
744	return [$this GetImage [lindex $args 0]]
745	}
746	"vtk" {
747	return [$this GetVtkData [lindex $args 0]]
748	}
749	}
750	return ""
751	}
752	default {
753	error "bad option \"$option\": should be coming, controls, now"
754	}
755	}
756	}
757
758	# ----------------------------------------------------------------------
759	# USAGE: Connect ?<host:port>,<host:port>...?
760	#
761	# Clients use this method to establish a connection to a new
762	# server, or to reestablish a connection to the previous server.
763	# Any existing connection is automatically closed.
764	# ----------------------------------------------------------------------
765	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
766	set _hosts [GetServerList "vtkvis"]
767	if { "" == $_hosts } {
768	return 0
769	}
770	set result [VisViewer::Connect $_hosts]
771	if { $result } {
772	if { $_reportClientInfo } {
773	# Tell the server the viewer, hub, user and session.
774	# Do this immediately on connect before buffering any commands
775	global env
776
777	set info {}
778	set user "???"
779	if { [info exists env(USER)] } {
780	set user $env(USER)
781	}
782	set session "???"
783	if { [info exists env(SESSION)] } {
784	set session $env(SESSION)
785	}
786	lappend info "hub" [exec hostname]
787	lappend info "client" "vtkisosurfaceviewer"
788	lappend info "user" $user
789	lappend info "session" $session
790	SendCmd "clientinfo [list $info]"
791	}
792
793	set w [winfo width $itk_component(view)]
794	set h [winfo height $itk_component(view)]
795	EventuallyResize $w $h
796	}
797	return $result
798	}
799
800	#
801	# isconnected --
802	#
803	# Indicates if we are currently connected to the visualization server.
804	#
805	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
806	return [VisViewer::IsConnected]
807	}
808
809	#
810	# disconnect --
811	#
812	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
813	Disconnect
814	set _reset 1
815	}
816
817	#
818	# Disconnect --
819	#
820	# Clients use this method to disconnect from the current rendering
821	# server.
822	#
823	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
824	VisViewer::Disconnect
825
826	$_dispatcher cancel !rebuild
827	$_dispatcher cancel !resize
828	$_dispatcher cancel !rotate
829	$_dispatcher cancel !xcutplane
830	$_dispatcher cancel !ycutplane
831	$_dispatcher cancel !zcutplane
832	$_dispatcher cancel !legend
833	# disconnected -- no more data sitting on server
834	set _outbuf ""
835	array unset _datasets
836	array unset _data
837	array unset _colormaps
838	array unset _seeds
839	array unset _dataset2style
840	array unset _obj2datasets
841	}
842
843	# ----------------------------------------------------------------------
844	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
845	#
846	# Invoked automatically whenever the "image" command comes in from
847	# the rendering server. Indicates that binary image data with the
848	# specified <size> will follow.
849	# ----------------------------------------------------------------------
850	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
851	array set info {
852	-token "???"
853	-bytes 0
854	-type image
855	}
856	array set info $args
857	set bytes [ReceiveBytes $info(-bytes)]
858	if { $info(-type) == "image" } {
859	if 0 {
860	set f [open "last.ppm" "w"]
861	puts $f $bytes
862	close $f
863	}
864	$_image(plot) configure -data $bytes
865	#set time [clock seconds]
866	#set date [clock format $time]
867	#set w [image width $_image(plot)]
868	#set h [image height $_image(plot)]
869	#puts stderr "$date: received image ${w}x${h} 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 -xaxisgrid -yaxisgrid -zaxisgrid -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 -cutplanesvisible -isosurfacevisible -isosurfaceoutline
1042	if { $_reset } {
1043	# These are settings that rely on a dataset being loaded.
1044	InitSettings \
1045	-isosurfacelighting \
1046	-field \
1047	-isosurfacevisible \
1048	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
1049	-isosurfacewireframe \
1050	-cutplanesvisible \
1051	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1052	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1053	-cutplanepreinterp -numcontours
1054
1055	Zoom reset
1056	foreach axis { x y z } {
1057	# Another problem fixed by a <view>. We looking into a data
1058	# object for the name of the axes. This should be global to
1059	# the viewer itself.
1060	set label [$_first hints ${axis}label]
1061	if { $label == "" } {
1062	set label [string toupper $axis]
1063	}
1064	# May be a space in the axis label.
1065	SendCmd [list axis name $axis $label]
1066	}
1067	if { [array size _fields] < 2 } {
1068	blt::table forget $itk_component(field) $itk_component(field_l)
1069	}
1070	set _reset 0
1071	}
1072
1073	# Actually write the commands to the server socket. If it fails, we don't
1074	# care. We're finished here.
1075	blt::busy hold $itk_component(hull)
1076	StopBufferingCommands; # Turn off buffering and send commands.
1077	blt::busy release $itk_component(hull)
1078	}
1079
1080	# ----------------------------------------------------------------------
1081	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1082	#
1083	# Returns a list of server IDs for the current datasets being displayed. This
1084	# is normally a single ID, but it might be a list of IDs if the current data
1085	# object has multiple components.
1086	# ----------------------------------------------------------------------
1087	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1088	set flag [lindex $args 0]
1089	switch -- $flag {
1090	"-all" {
1091	if { [llength $args] > 1 } {
1092	error "CurrentDatasets: can't specify dataobj after \"-all\""
1093	}
1094	set dlist [get -objects]
1095	}
1096	"-visible" {
1097	if { [llength $args] > 1 } {
1098	set dlist {}
1099	set args [lrange $args 1 end]
1100	foreach dataobj $args {
1101	if { [info exists _obj2ovride($dataobj-raise)] } {
1102	lappend dlist $dataobj
1103	}
1104	}
1105	} else {
1106	set dlist [get -visible]
1107	}
1108	}
1109	default {
1110	set dlist $args
1111	}
1112	}
1113	set rlist ""
1114	foreach dataobj $dlist {
1115	foreach comp [$dataobj components] {
1116	set tag $dataobj-$comp
1117	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1118	lappend rlist $tag
1119	}
1120	}
1121	}
1122	return $rlist
1123	}
1124
1125	# ----------------------------------------------------------------------
1126	# USAGE: Zoom in
1127	# USAGE: Zoom out
1128	# USAGE: Zoom reset
1129	#
1130	# Called automatically when the user clicks on one of the zoom
1131	# controls for this widget. Changes the zoom for the current view.
1132	# ----------------------------------------------------------------------
1133	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1134	switch -- $option {
1135	"in" {
1136	set _view(zoom) [expr {$_view(zoom)*1.25}]
1137	SendCmd "camera zoom $_view(zoom)"
1138	}
1139	"out" {
1140	set _view(zoom) [expr {$_view(zoom)*0.8}]
1141	SendCmd "camera zoom $_view(zoom)"
1142	}
1143	"reset" {
1144	array set _view {
1145	qw 0.853553
1146	qx -0.353553
1147	qy 0.353553
1148	qz 0.146447
1149	zoom 1.0
1150	xpan 0
1151	ypan 0
1152	}
1153	if { $_first != "" } {
1154	set location [$_first hints camera]
1155	if { $location != "" } {
1156	array set _view $location
1157	}
1158	}
1159	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1160	$_arcball quaternion $q
1161	DoRotate
1162	SendCmd "camera reset"
1163	}
1164	}
1165	}
1166
1167	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1168	set x $_view(xpan)
1169	set y $_view(ypan)
1170	SendCmd "camera pan $x $y"
1171	}
1172
1173
1174	# ----------------------------------------------------------------------
1175	# USAGE: Rotate click <x> <y>
1176	# USAGE: Rotate drag <x> <y>
1177	# USAGE: Rotate release <x> <y>
1178	#
1179	# Called automatically when the user clicks/drags/releases in the
1180	# plot area. Moves the plot according to the user's actions.
1181	# ----------------------------------------------------------------------
1182	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1183	switch -- $option {
1184	"click" {
1185	$itk_component(view) configure -cursor fleur
1186	set _click(x) $x
1187	set _click(y) $y
1188	}
1189	"drag" {
1190	if {[array size _click] == 0} {
1191	Rotate click $x $y
1192	} else {
1193	set w [winfo width $itk_component(view)]
1194	set h [winfo height $itk_component(view)]
1195	if {$w <= 0 \|\| $h <= 0} {
1196	return
1197	}
1198
1199	if {[catch {
1200	# this fails sometimes for no apparent reason
1201	set dx [expr {double($x-$_click(x))/$w}]
1202	set dy [expr {double($y-$_click(y))/$h}]
1203	}]} {
1204	return
1205	}
1206	if { $dx == 0 && $dy == 0 } {
1207	return
1208	}
1209	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1210	EventuallyRotate $q
1211	set _click(x) $x
1212	set _click(y) $y
1213	}
1214	}
1215	"release" {
1216	Rotate drag $x $y
1217	$itk_component(view) configure -cursor ""
1218	catch {unset _click}
1219	}
1220	default {
1221	error "bad option \"$option\": should be click, drag, release"
1222	}
1223	}
1224	}
1225
1226	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1227	foreach tag [CurrentDatasets -visible] {
1228	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1229	}
1230	}
1231
1232	# ----------------------------------------------------------------------
1233	# USAGE: $this Pan click x y
1234	# $this Pan drag x y
1235	# $this Pan release x y
1236	#
1237	# Called automatically when the user clicks on one of the zoom
1238	# controls for this widget. Changes the zoom for the current view.
1239	# ----------------------------------------------------------------------
1240	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1241	switch -- $option {
1242	"set" {
1243	set w [winfo width $itk_component(view)]
1244	set h [winfo height $itk_component(view)]
1245	set x [expr $x / double($w)]
1246	set y [expr $y / double($h)]
1247	set _view(xpan) [expr $_view(xpan) + $x]
1248	set _view(ypan) [expr $_view(ypan) + $y]
1249	PanCamera
1250	return
1251	}
1252	"click" {
1253	set _click(x) $x
1254	set _click(y) $y
1255	$itk_component(view) configure -cursor hand1
1256	}
1257	"drag" {
1258	if { ![info exists _click(x)] } {
1259	set _click(x) $x
1260	}
1261	if { ![info exists _click(y)] } {
1262	set _click(y) $y
1263	}
1264	set w [winfo width $itk_component(view)]
1265	set h [winfo height $itk_component(view)]
1266	set dx [expr ($_click(x) - $x)/double($w)]
1267	set dy [expr ($_click(y) - $y)/double($h)]
1268	set _click(x) $x
1269	set _click(y) $y
1270	set _view(xpan) [expr $_view(xpan) - $dx]
1271	set _view(ypan) [expr $_view(ypan) - $dy]
1272	PanCamera
1273	}
1274	"release" {
1275	Pan drag $x $y
1276	$itk_component(view) configure -cursor ""
1277	}
1278	default {
1279	error "unknown option \"$option\": should set, click, drag, or release"
1280	}
1281	}
1282	}
1283
1284	# ----------------------------------------------------------------------
1285	# USAGE: InitSettings <what> ?<value>?
1286	#
1287	# Used internally to update rendering settings whenever parameters
1288	# change in the popup settings panel. Sends the new settings off
1289	# to the back end.
1290	# ----------------------------------------------------------------------
1291	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1292	foreach spec $args {
1293	if { [info exists _settings($_first-$spec)] } {
1294	# Reset global setting with dataobj specific setting
1295	set _settings($spec) $_settings($_first-$spec)
1296	}
1297	AdjustSetting $spec
1298	}
1299	}
1300
1301	#
1302	# AdjustSetting --
1303	#
1304	# Changes/updates a specific setting in the widget. There are
1305	# usually user-setable option. Commands are sent to the render
1306	# server.
1307	#
1308	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1309	if { ![isconnected] } {
1310	return
1311	}
1312	switch -- $what {
1313	"-background" {
1314	set bgcolor [$itk_component(background) value]
1315	array set fgcolors {
1316	"black" "white"
1317	"white" "black"
1318	"grey" "black"
1319	}
1320	configure -plotbackground $bgcolor \
1321	-plotforeground $fgcolors($bgcolor)
1322	$itk_component(view) delete "legend"
1323	DrawLegend
1324	}
1325	"-axesvisible" {
1326	set bool $_settings(-axesvisible)
1327	SendCmd "axis visible all $bool"
1328	}
1329	"-axislabelsvisible" {
1330	set bool $_settings(-axislabelsvisible)
1331	SendCmd "axis labels all $bool"
1332	}
1333	"-xaxisgrid" - "-yaxisgrid" - "-zaxisgrid" {
1334	set axis [string tolower [string range $what 1 1]]
1335	set bool $_settings($what)
1336	SendCmd "axis grid $axis $bool"
1337	}
1338	"-axismode" {
1339	set mode [$itk_component(axisMode) value]
1340	set mode [$itk_component(axisMode) translate $mode]
1341	set _settings($what) $mode
1342	SendCmd "axis flymode $mode"
1343	}
1344	"-cutplaneedges" {
1345	set bool $_settings($what)
1346	SendCmd "cutplane edges $bool"
1347	}
1348	"-cutplanesvisible" {
1349	set bool $_settings($what)
1350	SendCmd "cutplane visible $bool"
1351	}
1352	"-cutplanewireframe" {
1353	set bool $_settings($what)
1354	SendCmd "cutplane wireframe $bool"
1355	}
1356	"-cutplanelighting" {
1357	set bool $_settings($what)
1358	SendCmd "cutplane lighting $bool"
1359	}
1360	"-cutplaneopacity" {
1361	set val $_settings($what)
1362	set sval [expr { 0.01 * double($val) }]
1363	SendCmd "cutplane opacity $sval"
1364	}
1365	"-cutplanepreinterp" {
1366	set bool $_settings($what)
1367	SendCmd "cutplane preinterp $bool"
1368	}
1369	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1370	set axis [string tolower [string range $what 1 1]]
1371	set bool $_settings($what)
1372	if { $bool } {
1373	$itk_component(${axis}position) configure -state normal \
1374	-troughcolor white
1375	} else {
1376	$itk_component(${axis}position) configure -state disabled \
1377	-troughcolor grey82
1378	}
1379	SendCmd "cutplane axis $axis $bool"
1380	}
1381	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1382	set axis [string tolower [string range $what 1 1]]
1383	set pos [expr $_settings($what) * 0.01]
1384	SendCmd "cutplane slice ${axis} ${pos}"
1385	set _cutplanePending 0
1386	}
1387	"-colormap" {
1388	set _changed(-colormap) 1
1389	StartBufferingCommands
1390	set color [$itk_component(colormap) value]
1391	set _settings(-colormap) $color
1392	if { $color == "none" } {
1393	if { $_settings(-colormapvisible) } {
1394	SendCmd "contour3d colormode constant {}"
1395	set _settings(-colormapvisible) 0
1396	}
1397	} else {
1398	if { !$_settings(-colormapvisible) } {
1399	SendCmd "contour3d colormode $_colorMode $_curFldName"
1400	set _settings(-colormapvisible) 1
1401	}
1402	SetCurrentColormap $color
1403	}
1404	StopBufferingCommands
1405	EventuallyRequestLegend
1406	}
1407	"-numcontours" {
1408	set _settings($what) [$itk_component(numcontours) value]
1409	set _currentNumContours $_settings($what)
1410	UpdateContourList
1411	set _changed($what) 1
1412	SendCmd "contour3d contourlist [list $_contourList]"
1413	DrawLegend
1414	}
1415	"-isosurfacewireframe" {
1416	set bool $_settings($what)
1417	SendCmd "contour3d wireframe $bool"
1418	}
1419	"-isosurfacevisible" {
1420	set bool $_settings($what)
1421	SendCmd "contour3d visible $bool"
1422	if { $bool } {
1423	Rappture::Tooltip::for $itk_component(contour) \
1424	"Hide the isosurface"
1425	} else {
1426	Rappture::Tooltip::for $itk_component(contour) \
1427	"Show the isosurface"
1428	}
1429	DrawLegend
1430	}
1431	"-isosurfacelighting" {
1432	set bool $_settings($what)
1433	SendCmd "contour3d lighting $bool"
1434	}
1435	"-isosurfaceedges" {
1436	set bool $_settings($what)
1437	SendCmd "contour3d edges $bool"
1438	}
1439	"-isosurfaceoutline" {
1440	set bool $_settings($what)
1441	SendCmd "outline visible $bool"
1442	}
1443	"-isolinecolor" {
1444	set color [$itk_component(isolineColor) value]
1445	set _settings($what) $color
1446	DrawLegend
1447	}
1448	"-isosurfaceopacity" {
1449	set val $_settings($what)
1450	set sval [expr { 0.01 * double($val) }]
1451	SendCmd "contour3d opacity $sval"
1452	}
1453	"-field" {
1454	set label [$itk_component(field) value]
1455	set fname [$itk_component(field) translate $label]
1456	set _settings($what) $fname
1457	if { [info exists _fields($fname)] } {
1458	foreach { label units components } $_fields($fname) break
1459	if { $components > 1 } {
1460	set _colorMode vmag
1461	} else {
1462	set _colorMode scalar
1463	}
1464	set _curFldName $fname
1465	set _curFldLabel $label
1466	} else {
1467	puts stderr "unknown field \"$fname\""
1468	return
1469	}
1470	SendCmd "dataset scalar $_curFldName"
1471	if { ![info exists _limits($_curFldName)] } {
1472	SendCmd "dataset maprange all"
1473	} else {
1474	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1475	}
1476	SendCmd "cutplane colormode $_colorMode $_curFldName"
1477	SendCmd "contour3d colormode $_colorMode $_curFldName"
1478	SendCmd "camera reset"
1479	UpdateContourList
1480	DrawLegend
1481	}
1482	"-legendvisible" {
1483	if { !$_settings($what) } {
1484	$itk_component(view) delete legend
1485	}
1486	DrawLegend
1487	}
1488	default {
1489	error "don't know how to fix $what"
1490	}
1491	}
1492	}
1493
1494
1495	#
1496	# RequestLegend --
1497	#
1498	# Request a new legend from the server. The size of the legend
1499	# is determined from the height of the canvas.
1500	#
1501	# This should be called when
1502	# 1. A new current colormap is set.
1503	# 2. Window is resized.
1504	# 3. The limits of the data have changed. (Just need a redraw).
1505	# 4. Number of isolines have changed. (Just need a redraw).
1506	# 5. Legend becomes visible (Just need a redraw).
1507	#
1508	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1509	set _legendPending 0
1510	if { ![info exists _fields($_curFldName)] } {
1511	return
1512	}
1513	set fname $_curFldName
1514	set font "Arial 8"
1515	set lineht [font metrics $font -linespace]
1516	set w 12
1517	set h [expr {$_height - 2 * ($lineht + 2)}]
1518	if { $h < 1 } {
1519	return
1520	}
1521	if { [string match "component*" $fname] } {
1522	set title ""
1523	} else {
1524	if { [info exists _fields($fname)] } {
1525	foreach { title units } $_fields($fname) break
1526	if { $units != "" } {
1527	set title [format "%s (%s)" $title $units]
1528	}
1529	} else {
1530	set title $fname
1531	}
1532	}
1533	# If there's a title too, subtract one more line
1534	if { $title != "" } {
1535	incr h -$lineht
1536	}
1537	# Set the legend on the first heightmap dataset.
1538	if { $_currentColormap != "" } {
1539	set cmap $_currentColormap
1540	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1541	}
1542	}
1543
1544	# ----------------------------------------------------------------------
1545	# CONFIGURATION OPTION: -plotbackground
1546	# ----------------------------------------------------------------------
1547	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1548	if { [isconnected] } {
1549	set rgb [Color2RGB $itk_option(-plotbackground)]
1550	SendCmd "screen bgcolor $rgb"
1551	}
1552	}
1553
1554	# ----------------------------------------------------------------------
1555	# CONFIGURATION OPTION: -plotforeground
1556	# ----------------------------------------------------------------------
1557	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1558	if { [isconnected] } {
1559	set rgb [Color2RGB $itk_option(-plotforeground)]
1560	SendCmd "axis color all $rgb"
1561	SendCmd "outline color $rgb"
1562	SendCmd "cutplane color $rgb"
1563	}
1564	}
1565
1566	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1567	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1568	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1569	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1570	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1571	return [array get limits]
1572	}
1573
1574	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1575
1576	set fg [option get $itk_component(hull) font Font]
1577	#set bfg [option get $itk_component(hull) boldFont Font]
1578
1579	set inner [$itk_component(main) insert end \
1580	-title "Isosurface Settings" \
1581	-icon [Rappture::icon volume-on]]
1582	$inner configure -borderwidth 4
1583
1584	checkbutton $inner.contour \
1585	-text "Isosurfaces" \
1586	-variable [itcl::scope _settings(-isosurfacevisible)] \
1587	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
1588	-font "Arial 9"
1589
1590	checkbutton $inner.wireframe \
1591	-text "Wireframe" \
1592	-variable [itcl::scope _settings(-isosurfacewireframe)] \
1593	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
1594	-font "Arial 9"
1595
1596	checkbutton $inner.lighting \
1597	-text "Enable Lighting" \
1598	-variable [itcl::scope _settings(-isosurfacelighting)] \
1599	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
1600	-font "Arial 9"
1601
1602	checkbutton $inner.edges \
1603	-text "Edges" \
1604	-variable [itcl::scope _settings(-isosurfaceedges)] \
1605	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
1606	-font "Arial 9"
1607
1608	checkbutton $inner.outline \
1609	-text "Outline" \
1610	-variable [itcl::scope _settings(-isosurfaceoutline)] \
1611	-command [itcl::code $this AdjustSetting -isosurfaceoutline] \
1612	-font "Arial 9"
1613
1614	checkbutton $inner.legend \
1615	-text "Legend" \
1616	-variable [itcl::scope _settings(-legendvisible)] \
1617	-command [itcl::code $this AdjustSetting -legendvisible] \
1618	-font "Arial 9"
1619
1620	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1621	itk_component add isolineColor {
1622	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1623	}
1624	$inner.linecolor choices insert end \
1625	"black" "black" \
1626	"blue" "blue" \
1627	"cyan" "cyan" \
1628	"green" "green" \
1629	"grey" "grey" \
1630	"magenta" "magenta" \
1631	"orange" "orange" \
1632	"red" "red" \
1633	"white" "white" \
1634	"none" "none"
1635
1636	$itk_component(isolineColor) value "white"
1637	bind $inner.linecolor <<Value>> \
1638	[itcl::code $this AdjustSetting -isolinecolor]
1639
1640	label $inner.background_l -text "Background" -font "Arial 9"
1641	itk_component add background {
1642	Rappture::Combobox $inner.background -width 10 -editable 0
1643	}
1644	$inner.background choices insert end \
1645	"black" "black" \
1646	"white" "white" \
1647	"grey" "grey"
1648
1649	$itk_component(background) value $_settings(-background)
1650	bind $inner.background <<Value>> \
1651	[itcl::code $this AdjustSetting -background]
1652
1653	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1654	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1655	-variable [itcl::scope _settings(-isosurfaceopacity)] \
1656	-width 10 \
1657	-showvalue off \
1658	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
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 0
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 0
1674	}
1675	$inner.colormap choices insert end [GetColormapList]
1676
1677	$itk_component(colormap) value "BCGYR"
1678	bind $inner.colormap <<Value>> \
1679	[itcl::code $this AdjustSetting -colormap]
1680
1681	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1682	itk_component add numcontours {
1683	Rappture::Spinint $inner.numcontours \
1684	-min 0 -max 50 -font "arial 9"
1685	}
1686	$itk_component(numcontours) value $_settings(-numcontours)
1687	bind $itk_component(numcontours) <<Value>> \
1688	[itcl::code $this AdjustSetting -numcontours]
1689
1690	blt::table $inner \
1691	0,0 $inner.field_l -anchor w -pady 2 \
1692	0,1 $inner.field -anchor w -pady 2 -fill x \
1693	1,0 $inner.colormap_l -anchor w -pady 2 \
1694	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1695	2,0 $inner.linecolor_l -anchor w -pady 2 \
1696	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1697	3,0 $inner.background_l -anchor w -pady 2 \
1698	3,1 $inner.background -anchor w -pady 2 -fill x \
1699	4,0 $inner.numcontours_l -anchor w -pady 2 \
1700	4,1 $inner.numcontours -anchor w -pady 2 \
1701	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1702	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1703	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1704	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1705	9,0 $inner.legend -anchor w -pady 2 \
1706	10,0 $inner.opacity_l -anchor w -pady 2 \
1707	10,1 $inner.opacity -fill x -pady 2 -fill x \
1708
1709	blt::table configure $inner r* c* -resize none
1710	blt::table configure $inner r11 c1 -resize expand
1711	}
1712
1713	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1714
1715	set fg [option get $itk_component(hull) font Font]
1716	#set bfg [option get $itk_component(hull) boldFont Font]
1717
1718	set inner [$itk_component(main) insert end \
1719	-title "Axis Settings" \
1720	-icon [Rappture::icon axis2]]
1721	$inner configure -borderwidth 4
1722
1723	checkbutton $inner.visible \
1724	-text "Show Axes" \
1725	-variable [itcl::scope _settings(-axesvisible)] \
1726	-command [itcl::code $this AdjustSetting -axesvisible] \
1727	-font "Arial 9"
1728
1729	checkbutton $inner.labels \
1730	-text "Show Axis Labels" \
1731	-variable [itcl::scope _settings(-axislabelsvisible)] \
1732	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1733	-font "Arial 9"
1734
1735	checkbutton $inner.gridx \
1736	-text "Show X Grid" \
1737	-variable [itcl::scope _settings(-xaxisgrid)] \
1738	-command [itcl::code $this AdjustSetting -xaxisgrid] \
1739	-font "Arial 9"
1740	checkbutton $inner.gridy \
1741	-text "Show Y Grid" \
1742	-variable [itcl::scope _settings(-yaxisgrid)] \
1743	-command [itcl::code $this AdjustSetting -yaxisgrid] \
1744	-font "Arial 9"
1745	checkbutton $inner.gridz \
1746	-text "Show Z Grid" \
1747	-variable [itcl::scope _settings(-zaxisgrid)] \
1748	-command [itcl::code $this AdjustSetting -zaxisgrid] \
1749	-font "Arial 9"
1750
1751	label $inner.mode_l -text "Mode" -font "Arial 9"
1752
1753	itk_component add axisMode {
1754	Rappture::Combobox $inner.mode -width 10 -editable 0
1755	}
1756	$inner.mode choices insert end \
1757	"static_triad" "static" \
1758	"closest_triad" "closest" \
1759	"furthest_triad" "farthest" \
1760	"outer_edges" "outer"
1761	$itk_component(axisMode) value "static"
1762	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1763
1764	blt::table $inner \
1765	0,0 $inner.visible -anchor w -cspan 2 \
1766	1,0 $inner.labels -anchor w -cspan 2 \
1767	2,0 $inner.gridx -anchor w -cspan 2 \
1768	3,0 $inner.gridy -anchor w -cspan 2 \
1769	4,0 $inner.gridz -anchor w -cspan 2 \
1770	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1771	6,0 $inner.mode -fill x -cspan 2
1772
1773	blt::table configure $inner r* c* -resize none
1774	blt::table configure $inner r7 c1 -resize expand
1775	}
1776
1777
1778	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1779	set inner [$itk_component(main) insert end \
1780	-title "Camera Settings" \
1781	-icon [Rappture::icon camera]]
1782	$inner configure -borderwidth 4
1783
1784	label $inner.view_l -text "view" -font "Arial 9"
1785	set f [frame $inner.view]
1786	foreach side { front back left right top bottom } {
1787	button $f.$side -image [Rappture::icon view$side] \
1788	-command [itcl::code $this SetOrientation $side]
1789	Rappture::Tooltip::for $f.$side "Change the view to $side"
1790	pack $f.$side -side left
1791	}
1792
1793	blt::table $inner \
1794	0,0 $inner.view_l -anchor e -pady 2 \
1795	0,1 $inner.view -anchor w -pady 2
1796
1797	set labels { qx qy qz qw xpan ypan zoom }
1798	set row 1
1799	foreach tag $labels {
1800	label $inner.${tag}label -text $tag -font "Arial 9"
1801	entry $inner.${tag} -font "Arial 9" -bg white \
1802	-textvariable [itcl::scope _view($tag)]
1803	bind $inner.${tag} <KeyPress-Return> \
1804	[itcl::code $this camera set ${tag}]
1805	blt::table $inner \
1806	$row,0 $inner.${tag}label -anchor e -pady 2 \
1807	$row,1 $inner.${tag} -anchor w -pady 2
1808	blt::table configure $inner r$row -resize none
1809	incr row
1810	}
1811	checkbutton $inner.ortho \
1812	-text "Orthographic Projection" \
1813	-variable [itcl::scope _view(ortho)] \
1814	-command [itcl::code $this camera set ortho] \
1815	-font "Arial 9"
1816	blt::table $inner \
1817	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1818	blt::table configure $inner r$row -resize none
1819	incr row
1820
1821	blt::table configure $inner c* r* -resize none
1822	blt::table configure $inner c2 -resize expand
1823	blt::table configure $inner r$row -resize expand
1824	}
1825
1826	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1827
1828	set fg [option get $itk_component(hull) font Font]
1829
1830	set inner [$itk_component(main) insert end \
1831	-title "Cutplane Settings" \
1832	-icon [Rappture::icon cutbutton]]
1833
1834	$inner configure -borderwidth 4
1835
1836	checkbutton $inner.visible \
1837	-text "Cutplanes" \
1838	-variable [itcl::scope _settings(-cutplanesvisible)] \
1839	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1840	-font "Arial 9"
1841
1842	checkbutton $inner.wireframe \
1843	-text "Wireframe" \
1844	-variable [itcl::scope _settings(-cutplanewireframe)] \
1845	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1846	-font "Arial 9"
1847
1848	checkbutton $inner.lighting \
1849	-text "Enable Lighting" \
1850	-variable [itcl::scope _settings(-cutplanelighting)] \
1851	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1852	-font "Arial 9"
1853
1854	checkbutton $inner.edges \
1855	-text "Edges" \
1856	-variable [itcl::scope _settings(-cutplaneedges)] \
1857	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1858	-font "Arial 9"
1859
1860	checkbutton $inner.preinterp \
1861	-text "Interpolate Scalars" \
1862	-variable [itcl::scope _settings(-cutplanepreinterp)] \
1863	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
1864	-font "Arial 9"
1865
1866	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1867	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1868	-variable [itcl::scope _settings(-cutplaneopacity)] \
1869	-width 10 \
1870	-showvalue off \
1871	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1872	$inner.opacity set $_settings(-cutplaneopacity)
1873
1874	# X-value slicer...
1875	itk_component add xbutton {
1876	Rappture::PushButton $inner.xbutton \
1877	-onimage [Rappture::icon x-cutplane-red] \
1878	-offimage [Rappture::icon x-cutplane-red] \
1879	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1880	-variable [itcl::scope _settings(-xcutplanevisible)] \
1881	}
1882	Rappture::Tooltip::for $itk_component(xbutton) \
1883	"Toggle the X-axis cutplane on/off"
1884	$itk_component(xbutton) select
1885	itk_component add xposition {
1886	::scale $inner.xval -from 100 -to 0 \
1887	-width 10 -orient vertical -showvalue 1 \
1888	-borderwidth 1 -highlightthickness 0 \
1889	-command [itcl::code $this EventuallySetCutplane x] \
1890	-variable [itcl::scope _settings(-xcutplaneposition)] \
1891	-foreground red2 -font "Arial 9 bold"
1892	} {
1893	usual
1894	ignore -borderwidth -highlightthickness -foreground -font -background
1895	}
1896	# Set the default cutplane value before disabling the scale.
1897	$itk_component(xposition) set 50
1898	$itk_component(xposition) configure -state disabled
1899	Rappture::Tooltip::for $itk_component(xposition) \
1900	"@[itcl::code $this Slice tooltip x]"
1901
1902	# Y-value slicer...
1903	itk_component add ybutton {
1904	Rappture::PushButton $inner.ybutton \
1905	-onimage [Rappture::icon y-cutplane-green] \
1906	-offimage [Rappture::icon y-cutplane-green] \
1907	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1908	-variable [itcl::scope _settings(-ycutplanevisible)] \
1909	}
1910	Rappture::Tooltip::for $itk_component(ybutton) \
1911	"Toggle the Y-axis cutplane on/off"
1912	$itk_component(ybutton) select
1913
1914	itk_component add yposition {
1915	::scale $inner.yval -from 100 -to 0 \
1916	-width 10 -orient vertical -showvalue 1 \
1917	-borderwidth 1 -highlightthickness 0 \
1918	-command [itcl::code $this EventuallySetCutplane y] \
1919	-variable [itcl::scope _settings(-ycutplaneposition)] \
1920	-foreground green3 -font "Arial 9 bold"
1921	} {
1922	usual
1923	ignore -borderwidth -highlightthickness -foreground -font
1924	}
1925	Rappture::Tooltip::for $itk_component(yposition) \
1926	"@[itcl::code $this Slice tooltip y]"
1927	# Set the default cutplane value before disabling the scale.
1928	$itk_component(yposition) set 50
1929	$itk_component(yposition) configure -state disabled
1930
1931	# Z-value slicer...
1932	itk_component add zbutton {
1933	Rappture::PushButton $inner.zbutton \
1934	-onimage [Rappture::icon z-cutplane-blue] \
1935	-offimage [Rappture::icon z-cutplane-blue] \
1936	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1937	-variable [itcl::scope _settings(-zcutplanevisible)] \
1938	} {
1939	usual
1940	ignore -foreground
1941	}
1942	Rappture::Tooltip::for $itk_component(zbutton) \
1943	"Toggle the Z-axis cutplane on/off"
1944	$itk_component(zbutton) select
1945
1946	itk_component add zposition {
1947	::scale $inner.zval -from 100 -to 0 \
1948	-width 10 -orient vertical -showvalue 1 \
1949	-borderwidth 1 -highlightthickness 0 \
1950	-command [itcl::code $this EventuallySetCutplane z] \
1951	-variable [itcl::scope _settings(-zcutplaneposition)] \
1952	-foreground blue3 -font "Arial 9 bold"
1953	} {
1954	usual
1955	ignore -borderwidth -highlightthickness -foreground -font
1956	}
1957	$itk_component(zposition) set 50
1958	$itk_component(zposition) configure -state disabled
1959	Rappture::Tooltip::for $itk_component(zposition) \
1960	"@[itcl::code $this Slice tooltip z]"
1961
1962	blt::table $inner \
1963	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
1964	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
1965	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
1966	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1967	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
1968	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1969	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1970	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
1971	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
1972	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
1973	6,1 $inner.xval -fill y -rspan 4 \
1974	6,2 $inner.yval -fill y -rspan 4 \
1975	6,3 $inner.zval -fill y -rspan 4 \
1976
1977
1978	blt::table configure $inner r* c* -resize none
1979	blt::table configure $inner r9 c4 -resize expand
1980	}
1981
1982
1983
1984	#
1985	# camera --
1986	#
1987	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
1988	switch -- $option {
1989	"show" {
1990	puts [array get _view]
1991	}
1992	"set" {
1993	set who [lindex $args 0]
1994	set x $_view($who)
1995	set code [catch { string is double $x } result]
1996	if { $code != 0 \|\| !$result } {
1997	return
1998	}
1999	switch -- $who {
2000	"ortho" {
2001	if {$_view(ortho)} {
2002	SendCmd "camera mode ortho"
2003	} else {
2004	SendCmd "camera mode persp"
2005	}
2006	}
2007	"xpan" - "ypan" {
2008	PanCamera
2009	}
2010	"qx" - "qy" - "qz" - "qw" {
2011	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2012	$_arcball quaternion $q
2013	EventuallyRotate $q
2014	}
2015	"zoom" {
2016	SendCmd "camera zoom $_view(zoom)"
2017	}
2018	}
2019	}
2020	}
2021	}
2022
2023	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2024	set bytes ""
2025	foreach dataobj [get] {
2026	foreach cname [$dataobj components] {
2027	set tag $dataobj-$cname
2028	set contents [$dataobj vtkdata $cname]
2029	append bytes "$contents\n"
2030	}
2031	}
2032	return [list .vtk $bytes]
2033	}
2034
2035	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2036	if { [image width $_image(download)] > 0 &&
2037	[image height $_image(download)] > 0 } {
2038	set bytes [$_image(download) data -format "jpeg -quality 100"]
2039	set bytes [Rappture::encoding::decode -as b64 $bytes]
2040	return [list .jpg $bytes]
2041	}
2042	return ""
2043	}
2044
2045	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2046	Rappture::Balloon $popup \
2047	-title "[Rappture::filexfer::label downloadWord] as..."
2048	set inner [$popup component inner]
2049	label $inner.summary -text "" -anchor w
2050	radiobutton $inner.vtk_button -text "VTK data file" \
2051	-variable [itcl::scope _downloadPopup(format)] \
2052	-font "Arial 9 " \
2053	-value vtk
2054	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2055	radiobutton $inner.image_button -text "Image File" \
2056	-variable [itcl::scope _downloadPopup(format)] \
2057	-font "Arial 9 " \
2058	-value image
2059	Rappture::Tooltip::for $inner.image_button \
2060	"Save as digital image."
2061
2062	button $inner.ok -text "Save" \
2063	-highlightthickness 0 -pady 2 -padx 3 \
2064	-command $command \
2065	-compound left \
2066	-image [Rappture::icon download]
2067
2068	button $inner.cancel -text "Cancel" \
2069	-highlightthickness 0 -pady 2 -padx 3 \
2070	-command [list $popup deactivate] \
2071	-compound left \
2072	-image [Rappture::icon cancel]
2073
2074	blt::table $inner \
2075	0,0 $inner.summary -cspan 2 \
2076	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2077	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2078	4,1 $inner.cancel -width .9i -fill y \
2079	4,0 $inner.ok -padx 2 -width .9i -fill y
2080	blt::table configure $inner r3 -height 4
2081	blt::table configure $inner r4 -pady 4
2082	raise $inner.image_button
2083	$inner.vtk_button invoke
2084	return $inner
2085	}
2086
2087	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2088	# Parse style string.
2089	set tag $dataobj-$comp
2090	array set style {
2091	-color BCGYR
2092	-cutplanesvisible 0
2093	-edgecolor black
2094	-edges 0
2095	-isosurfacevisible 1
2096	-levels 10
2097	-lighting 1
2098	-linewidth 1.0
2099	-opacity 0.6
2100	-outline 0
2101	-xcutplanevisible 1
2102	-xcutplaneposition 50
2103	-ycutplanevisible 1
2104	-ycutplaneposition 50
2105	-zcutplanevisible 1
2106	-zcutplaneposition 50
2107	-wireframe 0
2108	}
2109	array set style [$dataobj style $comp]
2110	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2111	set style(-opacity) 1
2112	}
2113	SendCmd "cutplane add $tag"
2114	SendCmd "cutplane visible 0 $tag"
2115
2116	# This is too complicated. We want to set the colormap, number of
2117	# isolines and opacity for the dataset. They can be the default values,
2118	# the style hints loaded with the dataset, or set by user controls. As
2119	# datasets get loaded, they first use the defaults that are overidden
2120	# by the style hints. If the user changes the global controls, then that
2121	# overrides everything else. I don't know what it means when global
2122	# controls are specified as style hints by each dataset. It complicates
2123	# the code to handle aberrant cases.
2124
2125	if { $_changed(-isosurfaceopacity) } {
2126	set style(-opacity) $_settings(-isosurfaceopacity)
2127	}
2128	if { $_changed(-numcontours) } {
2129	set style(-levels) $_settings(-numcontours)
2130	}
2131	if { $_changed(-colormap) } {
2132	set style(-color) $_settings(-colormap)
2133	}
2134	if { $_currentColormap == "" } {
2135	SetCurrentColormap $style(-color)
2136	$itk_component(colormap) value $style(-color)
2137	}
2138	set _currentOpacity $style(-opacity)
2139	if { $_currentNumContours != $style(-levels) } {
2140	set _currentNumContours $style(-levels)
2141	set _settings(-numcontours) $_currentNumContours
2142	$itk_component(numcontours) value $_currentNumContours
2143	UpdateContourList
2144	DrawLegend
2145	}
2146	set _settings(-isosurfacevisible) $style(-isosurfacevisible)
2147	set _settings(-cutplanesvisible) $style(-cutplanesvisible)
2148	set _settings(-xcutplanevisible) $style(-xcutplanevisible)
2149	set _settings(-ycutplanevisible) $style(-ycutplanevisible)
2150	set _settings(-zcutplanevisible) $style(-zcutplanevisible)
2151	set _settings(-xcutplaneposition) $style(-xcutplaneposition)
2152	set _settings(-ycutplaneposition) $style(-ycutplaneposition)
2153	set _settings(-zcutplaneposition) $style(-zcutplaneposition)
2154
2155	SendCmd [list contour3d add contourlist $_contourList $tag]
2156	SendCmd "contour3d edges $style(-edges) $tag"
2157	SendCmd "outline add $tag"
2158	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2159	SendCmd "outline visible $style(-outline) $tag"
2160	set _settings(-isosurfaceoutline) $style(-outline)
2161	set _settings(-isosurfaceedges) $style(-edges)
2162	#SendCmd "contour3d color [Color2RGB $settings(-color)] $tag"
2163	SendCmd "contour3d lighting $style(-lighting) $tag"
2164	set _settings(-isosurfacelighting) $style(-lighting)
2165	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2166	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2167	SendCmd "contour3d opacity $_currentOpacity $tag"
2168	set _settings(-isosurfaceopacity) $style(-opacity)
2169	SetCurrentColormap $style(-color)
2170	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2171	set _settings(-isosurfacewireframe) $style(-wireframe)
2172	set _settings(-isosurfaceopacity) [expr $style(-opacity) * 100.0]
2173	}
2174
2175	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2176	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2177	return 0
2178	}
2179	return 1
2180	}
2181
2182	#
2183	# EnterLegend --
2184	#
2185	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2186	SetLegendTip $x $y
2187	}
2188
2189	#
2190	# MotionLegend --
2191	#
2192	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2193	Rappture::Tooltip::tooltip cancel
2194	set c $itk_component(view)
2195	set cw [winfo width $c]
2196	set ch [winfo height $c]
2197	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2198	SetLegendTip $x $y
2199	}
2200	}
2201
2202	#
2203	# LeaveLegend --
2204	#
2205	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2206	Rappture::Tooltip::tooltip cancel
2207	.rappturetooltip configure -icon ""
2208	}
2209
2210	#
2211	# SetLegendTip --
2212	#
2213	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2214	set fname $_curFldName
2215	set c $itk_component(view)
2216	set w [winfo width $c]
2217	set h [winfo height $c]
2218
2219	set font "Arial 8"
2220	set lineht [font metrics $font -linespace]
2221
2222	set ih [image height $_image(legend)]
2223	set iy [expr $y - ($lineht + 2)]
2224
2225	if { [string match "component*" $fname] } {
2226	set title ""
2227	} else {
2228	if { [info exists _fields($fname)] } {
2229	foreach { title units } $_fields($fname) break
2230	if { $units != "" } {
2231	set title [format "%s (%s)" $title $units]
2232	}
2233	} else {
2234	set title $fname
2235	}
2236	}
2237	# If there's a legend title, increase the offset by the line height.
2238	if { $title != "" } {
2239	incr iy -$lineht
2240	}
2241	# Make a swatch of the selected color
2242	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2243	return
2244	}
2245	if { ![info exists _image(swatch)] } {
2246	set _image(swatch) [image create photo -width 24 -height 24]
2247	}
2248	set color [eval format "\#%02x%02x%02x" $pixel]
2249	$_image(swatch) put black -to 0 0 23 23
2250	$_image(swatch) put $color -to 1 1 22 22
2251	.rappturetooltip configure -icon $_image(swatch)
2252
2253	# Compute the value of the point
2254	if { [info exists _limits($_curFldName)] } {
2255	foreach { vmin vmax } $_limits($_curFldName) break
2256	set t [expr 1.0 - (double($iy) / double($ih-1))]
2257	set value [expr $t * ($vmax - $vmin) + $vmin]
2258	} else {
2259	set value 0.0
2260	}
2261	set tx [expr $x + 15]
2262	set ty [expr $y - 5]
2263	if { [info exists _isolines($y)] } {
2264	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2265	} else {
2266	Rappture::Tooltip::text $c [format "$title %g" $value]
2267	}
2268	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2269	}
2270
2271
2272	# ----------------------------------------------------------------------
2273	# USAGE: Slice move x\|y\|z <newval>
2274	#
2275	# Called automatically when the user drags the slider to move the
2276	# cut plane that slices 3D data. Gets the current value from the
2277	# slider and moves the cut plane to the appropriate point in the
2278	# data set.
2279	# ----------------------------------------------------------------------
2280	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2281	switch -- $option {
2282	"move" {
2283	set axis [lindex $args 0]
2284	set newval [lindex $args 1]
2285	if {[llength $args] != 2} {
2286	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2287	}
2288	set newpos [expr {0.01*$newval}]
2289	SendCmd "cutplane slice $axis $newpos"
2290	}
2291	"tooltip" {
2292	set axis [lindex $args 0]
2293	set val [$itk_component(${axis}position) get]
2294	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2295	}
2296	default {
2297	error "bad option \"$option\": should be axis, move, or tooltip"
2298	}
2299	}
2300	}
2301
2302	#
2303	# ReceiveLegend --
2304	#
2305	# Invoked automatically whenever the "legend" command comes in from
2306	# the rendering server. Indicates that binary image data with the
2307	# specified <size> will follow.
2308	#
2309	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2310	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2311	set _title $title
2312	regsub {\(mag\)} $title "" _title
2313	if { [IsConnected] } {
2314	set bytes [ReceiveBytes $size]
2315	if { ![info exists _image(legend)] } {
2316	set _image(legend) [image create photo]
2317	}
2318	$_image(legend) configure -data $bytes
2319	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2320	if { [catch {DrawLegend} errs] != 0 } {
2321	global errorInfo
2322	puts stderr "errs=$errs errorInfo=$errorInfo"
2323	}
2324	}
2325	}
2326
2327	#
2328	# DrawLegend --
2329	#
2330	# Draws the legend in the own canvas on the right side of the plot area.
2331	#
2332	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2333	set fname $_curFldName
2334	set c $itk_component(view)
2335	set w [winfo width $c]
2336	set h [winfo height $c]
2337	set font "Arial 8"
2338	set lineht [font metrics $font -linespace]
2339
2340	if { [string match "component*" $fname] } {
2341	set title ""
2342	} else {
2343	if { [info exists _fields($fname)] } {
2344	foreach { title units } $_fields($fname) break
2345	if { $units != "" } {
2346	set title [format "%s (%s)" $title $units]
2347	}
2348	} else {
2349	set title $fname
2350	}
2351	}
2352	set x [expr $w - 2]
2353	if { !$_settings(-legendvisible) } {
2354	$c delete legend
2355	return
2356	}
2357	if { [$c find withtag "legend"] == "" } {
2358	set y 2
2359	# If there's a legend title, create a text item for the title.
2360	$c create text $x $y \
2361	-anchor ne \
2362	-fill $itk_option(-plotforeground) -tags "title legend" \
2363	-font $font
2364	if { $title != "" } {
2365	incr y $lineht
2366	}
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	if { $_currentNumContours < 1 } {
2536	set _contourList ""
2537	return
2538	}
2539	foreach { vmin vmax } $_limits($_curFldName) break
2540	set v [blt::vector create \#auto]
2541	$v seq $vmin $vmax [expr $_currentNumContours+2]
2542	$v delete end 0
2543	set _contourList [$v range 0 end]
2544	blt::vector destroy $v
2545	}
2546

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