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source: branches/1.3/gui/scripts/vtkisosurfaceviewer.tcl @ 4339

Last change on this file since 4339 was 4339, checked in by ldelgass, 11 years ago
Fix background setting in isosurface viewer
File size: 87.4 KB

Line
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 -xcutplaneposition]; list"
191
192	# Y-Cutplane event
193	$_dispatcher register !ycutplane
194	$_dispatcher dispatch $this !ycutplane \
195	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
196
197	# Z-Cutplane event
198	$_dispatcher register !zcutplane
199	$_dispatcher dispatch $this !zcutplane \
200	"[itcl::code $this AdjustSetting -zcutplaneposition]; 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 {
225	-background black
226	-colormap BCGYR
227	-colormapvisible 1
228	-field "Default"
229	-isolinecolor white
230	-axesvisible 1
231	-axislabelsvisible 1
232	-cutplaneedges 0
233	-cutplanelighting 1
234	-cutplaneopacity 100
235	-cutplanepreinterp 1
236	-cutplanesvisible 0
237	-cutplanewireframe 0
238	-isosurfaceedges 0
239	-isosurfacelighting 1
240	-isosurfaceopacity 60
241	-isosurfaceoutline 0
242	-isosurfacevisible 1
243	-isosurfacewireframe 0
244	-legendvisible 1
245	-numcontours 10
246	-xaxisgrid 0
247	-xcutplaneposition 50
248	-xcutplanevisible 1
249	-yaxisgrid 0
250	-ycutplaneposition 50
251	-ycutplanevisible 1
252	-zaxisgrid 0
253	-zcutplaneposition 50
254	-zcutplanevisible 1
255	}
256	array set _changed {
257	-isosurfaceopacity 0
258	-colormap 0
259	-numcontours 0
260	}
261
262	itk_component add view {
263	canvas $itk_component(plotarea).view \
264	-highlightthickness 0 -borderwidth 0
265	} {
266	usual
267	ignore -highlightthickness -borderwidth -background
268	}
269
270	itk_component add fieldmenu {
271	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
272	-tearoff 0
273	} {
274	usual
275	ignore -background -foreground -relief -tearoff
276	}
277	set c $itk_component(view)
278	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
279	bind $c <4> [itcl::code $this Zoom in 0.25]
280	bind $c <5> [itcl::code $this Zoom out 0.25]
281	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
282	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
283	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
284	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
285	bind $c <Enter> "focus %W"
286	bind $c <Control-F1> [itcl::code $this ToggleConsole]
287
288	# Fix the scrollregion in case we go off screen
289	$c configure -scrollregion [$c bbox all]
290
291	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
292	set _map(cwidth) -1
293	set _map(cheight) -1
294	set _map(zoom) 1.0
295	set _map(original) ""
296
297	set f [$itk_component(main) component controls]
298	itk_component add reset {
299	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon reset-view] \
302	-command [itcl::code $this Zoom reset]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(reset) -side top -padx 2 -pady 2
308	Rappture::Tooltip::for $itk_component(reset) \
309	"Reset the view to the default zoom level"
310
311	itk_component add zoomin {
312	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
313	-highlightthickness 0 \
314	-image [Rappture::icon zoom-in] \
315	-command [itcl::code $this Zoom in]
316	} {
317	usual
318	ignore -highlightthickness
319	}
320	pack $itk_component(zoomin) -side top -padx 2 -pady 2
321	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
322
323	itk_component add zoomout {
324	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
325	-highlightthickness 0 \
326	-image [Rappture::icon zoom-out] \
327	-command [itcl::code $this Zoom out]
328	} {
329	usual
330	ignore -highlightthickness
331	}
332	pack $itk_component(zoomout) -side top -padx 2 -pady 2
333	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
334
335	itk_component add contour {
336	Rappture::PushButton $f.contour \
337	-onimage [Rappture::icon volume-on] \
338	-offimage [Rappture::icon volume-off] \
339	-variable [itcl::scope _settings(-isosurfacevisible)] \
340	-command [itcl::code $this AdjustSetting -isosurfacevisible]
341	}
342	$itk_component(contour) select
343	Rappture::Tooltip::for $itk_component(contour) \
344	"Don't display the isosurface"
345	pack $itk_component(contour) -padx 2 -pady 2
346
347	if {0} {
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(-cutplanesvisible)] \
353	-command [itcl::code $this AdjustSetting -cutplanesvisible]
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	#set w [image width $_image(plot)]
870	#set h [image height $_image(plot)]
871	#puts stderr "$date: received image ${w}x${h} image"
872	if { $_start > 0 } {
873	set finish [clock clicks -milliseconds]
874	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
875	set _start 0
876	}
877	} elseif { $info(type) == "print" } {
878	set tag $this-print-$info(-token)
879	set _hardcopy($tag) $bytes
880	}
881	}
882
883	#
884	# ReceiveDataset --
885	#
886	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
887	if { ![isconnected] } {
888	return
889	}
890	set option [lindex $args 0]
891	switch -- $option {
892	"scalar" {
893	set option [lindex $args 1]
894	switch -- $option {
895	"world" {
896	foreach { x y z value tag } [lrange $args 2 end] break
897	}
898	"pixel" {
899	foreach { x y value tag } [lrange $args 2 end] break
900	}
901	}
902	}
903	"vector" {
904	set option [lindex $args 1]
905	switch -- $option {
906	"world" {
907	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
908	}
909	"pixel" {
910	foreach { x y vx vy vz tag } [lrange $args 2 end] break
911	}
912	}
913	}
914	"names" {
915	foreach { name } [lindex $args 1] {
916	#puts stderr "Dataset: $name"
917	}
918	}
919	default {
920	error "unknown dataset option \"$option\" from server"
921	}
922	}
923	}
924
925	# ----------------------------------------------------------------------
926	# USAGE: Rebuild
927	#
928	# Called automatically whenever something changes that affects the
929	# data in the widget. Clears any existing data and rebuilds the
930	# widget to display new data.
931	# ----------------------------------------------------------------------
932	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
933	set w [winfo width $itk_component(view)]
934	set h [winfo height $itk_component(view)]
935	if { $w < 2 \|\| $h < 2 } {
936	$_dispatcher event -idle !rebuild
937	return
938	}
939
940	# Turn on buffering of commands to the server. We don't want to
941	# be preempted by a server disconnect/reconnect (which automatically
942	# generates a new call to Rebuild).
943	StartBufferingCommands
944
945	if { $_reset } {
946	set _width $w
947	set _height $h
948	$_arcball resize $w $h
949	DoResize
950	#
951	# Reset the camera and other view parameters
952	#
953	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
954	$_arcball quaternion $q
955	if {$_view(ortho)} {
956	SendCmd "camera mode ortho"
957	} else {
958	SendCmd "camera mode persp"
959	}
960	DoRotate
961	PanCamera
962	set _first ""
963	InitSettings -xaxisgrid -yaxisgrid -zaxisgrid -axismode \
964	-axesvisible -axislabelsvisible
965	foreach axis { x y z } {
966	SendCmd "axis lformat $axis %g"
967	}
968	StopBufferingCommands
969	SendCmd "imgflush"
970	StartBufferingCommands
971	}
972	set _first ""
973	SendCmd "dataset visible 0"
974	foreach dataobj [get -objects] {
975	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
976	set _first $dataobj
977	}
978	set _obj2datasets($dataobj) ""
979	foreach comp [$dataobj components] {
980	set tag $dataobj-$comp
981	if { ![info exists _datasets($tag)] } {
982	set bytes [$dataobj vtkdata $comp]
983	if 0 {
984	set f [open "/tmp/isosurface.vtk" "w"]
985	puts $f $bytes
986	close $f
987	}
988	set length [string length $bytes]
989	if { $_reportClientInfo } {
990	set info {}
991	lappend info "tool_id" [$dataobj hints toolId]
992	lappend info "tool_name" [$dataobj hints toolName]
993	lappend info "tool_version" [$dataobj hints toolRevision]
994	lappend info "tool_title" [$dataobj hints toolTitle]
995	lappend info "dataset_label" [$dataobj hints label]
996	lappend info "dataset_size" $length
997	lappend info "dataset_tag" $tag
998	SendCmd "clientinfo [list $info]"
999	}
1000	append _outbuf "dataset add $tag data follows $length\n"
1001	append _outbuf $bytes
1002	set _datasets($tag) 1
1003	SetObjectStyle $dataobj $comp
1004	}
1005	lappend _obj2datasets($dataobj) $tag
1006	if { [info exists _obj2ovride($dataobj-raise)] } {
1007	# Setting dataset visible enables outline
1008	# and contour3d
1009	SendCmd "dataset visible 1 $tag"
1010	}
1011	}
1012	}
1013
1014	if { $_first != "" } {
1015	$itk_component(field) choices delete 0 end
1016	$itk_component(fieldmenu) delete 0 end
1017	array unset _fields
1018	set _curFldName ""
1019	foreach cname [$_first components] {
1020	foreach fname [$_first fieldnames $cname] {
1021	if { [info exists _fields($fname)] } {
1022	continue
1023	}
1024	foreach { label units components } \
1025	[$_first fieldinfo $fname] break
1026	$itk_component(field) choices insert end "$fname" "$label"
1027	$itk_component(fieldmenu) add radiobutton -label "$label" \
1028	-value $label -variable [itcl::scope _curFldLabel] \
1029	-selectcolor red \
1030	-activebackground $itk_option(-plotbackground) \
1031	-activeforeground $itk_option(-plotforeground) \
1032	-font "Arial 8" \
1033	-command [itcl::code $this Combo invoke]
1034	set _fields($fname) [list $label $units $components]
1035	if { $_curFldName == "" } {
1036	set _curFldName $fname
1037	set _curFldLabel $label
1038	}
1039	}
1040	}
1041	$itk_component(field) value $_curFldLabel
1042	}
1043	InitSettings -cutplanesvisible -isosurfacevisible -isosurfaceoutline
1044	if { $_reset } {
1045	# These are settings that rely on a dataset being loaded.
1046	InitSettings \
1047	-isosurfacelighting \
1048	-field \
1049	-isosurfacevisible \
1050	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
1051	-isosurfacewireframe \
1052	-cutplanesvisible \
1053	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1054	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1055	-cutplanepreinterp -numcontours
1056
1057	Zoom reset
1058	foreach axis { x y z } {
1059	# Another problem fixed by a <view>. We looking into a data
1060	# object for the name of the axes. This should be global to
1061	# the viewer itself.
1062	set label [$_first hints ${axis}label]
1063	if { $label == "" } {
1064	set label [string toupper $axis]
1065	}
1066	# May be a space in the axis label.
1067	SendCmd [list axis name $axis $label]
1068	}
1069	if { [array size _fields] < 2 } {
1070	blt::table forget $itk_component(field) $itk_component(field_l)
1071	}
1072	set _reset 0
1073	}
1074
1075	# Actually write the commands to the server socket. If it fails, we don't
1076	# care. We're finished here.
1077	blt::busy hold $itk_component(hull)
1078	StopBufferingCommands; # Turn off buffering and send commands.
1079	blt::busy release $itk_component(hull)
1080	}
1081
1082	# ----------------------------------------------------------------------
1083	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1084	#
1085	# Returns a list of server IDs for the current datasets being displayed. This
1086	# is normally a single ID, but it might be a list of IDs if the current data
1087	# object has multiple components.
1088	# ----------------------------------------------------------------------
1089	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1090	set flag [lindex $args 0]
1091	switch -- $flag {
1092	"-all" {
1093	if { [llength $args] > 1 } {
1094	error "CurrentDatasets: can't specify dataobj after \"-all\""
1095	}
1096	set dlist [get -objects]
1097	}
1098	"-visible" {
1099	if { [llength $args] > 1 } {
1100	set dlist {}
1101	set args [lrange $args 1 end]
1102	foreach dataobj $args {
1103	if { [info exists _obj2ovride($dataobj-raise)] } {
1104	lappend dlist $dataobj
1105	}
1106	}
1107	} else {
1108	set dlist [get -visible]
1109	}
1110	}
1111	default {
1112	set dlist $args
1113	}
1114	}
1115	set rlist ""
1116	foreach dataobj $dlist {
1117	foreach comp [$dataobj components] {
1118	set tag $dataobj-$comp
1119	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1120	lappend rlist $tag
1121	}
1122	}
1123	}
1124	return $rlist
1125	}
1126
1127	# ----------------------------------------------------------------------
1128	# USAGE: Zoom in
1129	# USAGE: Zoom out
1130	# USAGE: Zoom reset
1131	#
1132	# Called automatically when the user clicks on one of the zoom
1133	# controls for this widget. Changes the zoom for the current view.
1134	# ----------------------------------------------------------------------
1135	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1136	switch -- $option {
1137	"in" {
1138	set _view(zoom) [expr {$_view(zoom)*1.25}]
1139	SendCmd "camera zoom $_view(zoom)"
1140	}
1141	"out" {
1142	set _view(zoom) [expr {$_view(zoom)*0.8}]
1143	SendCmd "camera zoom $_view(zoom)"
1144	}
1145	"reset" {
1146	array set _view {
1147	qw 0.853553
1148	qx -0.353553
1149	qy 0.353553
1150	qz 0.146447
1151	zoom 1.0
1152	xpan 0
1153	ypan 0
1154	}
1155	if { $_first != "" } {
1156	set location [$_first hints camera]
1157	if { $location != "" } {
1158	array set _view $location
1159	}
1160	}
1161	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1162	$_arcball quaternion $q
1163	DoRotate
1164	SendCmd "camera reset"
1165	}
1166	}
1167	}
1168
1169	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1170	set x $_view(xpan)
1171	set y $_view(ypan)
1172	SendCmd "camera pan $x $y"
1173	}
1174
1175
1176	# ----------------------------------------------------------------------
1177	# USAGE: Rotate click <x> <y>
1178	# USAGE: Rotate drag <x> <y>
1179	# USAGE: Rotate release <x> <y>
1180	#
1181	# Called automatically when the user clicks/drags/releases in the
1182	# plot area. Moves the plot according to the user's actions.
1183	# ----------------------------------------------------------------------
1184	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1185	switch -- $option {
1186	"click" {
1187	$itk_component(view) configure -cursor fleur
1188	set _click(x) $x
1189	set _click(y) $y
1190	}
1191	"drag" {
1192	if {[array size _click] == 0} {
1193	Rotate click $x $y
1194	} else {
1195	set w [winfo width $itk_component(view)]
1196	set h [winfo height $itk_component(view)]
1197	if {$w <= 0 \|\| $h <= 0} {
1198	return
1199	}
1200
1201	if {[catch {
1202	# this fails sometimes for no apparent reason
1203	set dx [expr {double($x-$_click(x))/$w}]
1204	set dy [expr {double($y-$_click(y))/$h}]
1205	}]} {
1206	return
1207	}
1208	if { $dx == 0 && $dy == 0 } {
1209	return
1210	}
1211	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1212	EventuallyRotate $q
1213	set _click(x) $x
1214	set _click(y) $y
1215	}
1216	}
1217	"release" {
1218	Rotate drag $x $y
1219	$itk_component(view) configure -cursor ""
1220	catch {unset _click}
1221	}
1222	default {
1223	error "bad option \"$option\": should be click, drag, release"
1224	}
1225	}
1226	}
1227
1228	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1229	foreach tag [CurrentDatasets -visible] {
1230	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1231	}
1232	}
1233
1234	# ----------------------------------------------------------------------
1235	# USAGE: $this Pan click x y
1236	# $this Pan drag x y
1237	# $this Pan release x y
1238	#
1239	# Called automatically when the user clicks on one of the zoom
1240	# controls for this widget. Changes the zoom for the current view.
1241	# ----------------------------------------------------------------------
1242	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1243	switch -- $option {
1244	"set" {
1245	set w [winfo width $itk_component(view)]
1246	set h [winfo height $itk_component(view)]
1247	set x [expr $x / double($w)]
1248	set y [expr $y / double($h)]
1249	set _view(xpan) [expr $_view(xpan) + $x]
1250	set _view(ypan) [expr $_view(ypan) + $y]
1251	PanCamera
1252	return
1253	}
1254	"click" {
1255	set _click(x) $x
1256	set _click(y) $y
1257	$itk_component(view) configure -cursor hand1
1258	}
1259	"drag" {
1260	if { ![info exists _click(x)] } {
1261	set _click(x) $x
1262	}
1263	if { ![info exists _click(y)] } {
1264	set _click(y) $y
1265	}
1266	set w [winfo width $itk_component(view)]
1267	set h [winfo height $itk_component(view)]
1268	set dx [expr ($_click(x) - $x)/double($w)]
1269	set dy [expr ($_click(y) - $y)/double($h)]
1270	set _click(x) $x
1271	set _click(y) $y
1272	set _view(xpan) [expr $_view(xpan) - $dx]
1273	set _view(ypan) [expr $_view(ypan) - $dy]
1274	PanCamera
1275	}
1276	"release" {
1277	Pan drag $x $y
1278	$itk_component(view) configure -cursor ""
1279	}
1280	default {
1281	error "unknown option \"$option\": should set, click, drag, or release"
1282	}
1283	}
1284	}
1285
1286	# ----------------------------------------------------------------------
1287	# USAGE: InitSettings <what> ?<value>?
1288	#
1289	# Used internally to update rendering settings whenever parameters
1290	# change in the popup settings panel. Sends the new settings off
1291	# to the back end.
1292	# ----------------------------------------------------------------------
1293	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1294	foreach spec $args {
1295	if { [info exists _settings($_first-$spec)] } {
1296	# Reset global setting with dataobj specific setting
1297	set _settings($spec) $_settings($_first-$spec)
1298	}
1299	AdjustSetting $spec
1300	}
1301	}
1302
1303	#
1304	# AdjustSetting --
1305	#
1306	# Changes/updates a specific setting in the widget. There are
1307	# usually user-setable option. Commands are sent to the render
1308	# server.
1309	#
1310	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1311	if { ![isconnected] } {
1312	return
1313	}
1314	switch -- $what {
1315	"-background" {
1316	set bgcolor [$itk_component(background) value]
1317	array set fgcolors {
1318	"black" "white"
1319	"white" "black"
1320	"grey" "black"
1321	}
1322	configure -plotbackground $bgcolor \
1323	-plotforeground $fgcolors($bgcolor)
1324	$itk_component(view) delete "legend"
1325	DrawLegend
1326	}
1327	"-axesvisible" {
1328	set bool $_settings(-axesvisible)
1329	SendCmd "axis visible all $bool"
1330	}
1331	"-axislabelsvisible" {
1332	set bool $_settings(-axislabelsvisible)
1333	SendCmd "axis labels all $bool"
1334	}
1335	"-xaxisgrid" - "-yaxisgrid" - "-zaxisgrid" {
1336	set axis [string tolower [string range $what 1 1]]
1337	set bool $_settings($what)
1338	SendCmd "axis grid $axis $bool"
1339	}
1340	"-axismode" {
1341	set mode [$itk_component(axisMode) value]
1342	set mode [$itk_component(axisMode) translate $mode]
1343	set _settings($what) $mode
1344	SendCmd "axis flymode $mode"
1345	}
1346	"-cutplaneedges" {
1347	set bool $_settings($what)
1348	SendCmd "cutplane edges $bool"
1349	}
1350	"-cutplanesvisible" {
1351	set bool $_settings($what)
1352	SendCmd "cutplane visible $bool"
1353	}
1354	"-cutplanewireframe" {
1355	set bool $_settings($what)
1356	SendCmd "cutplane wireframe $bool"
1357	}
1358	"-cutplanelighting" {
1359	set bool $_settings($what)
1360	SendCmd "cutplane lighting $bool"
1361	}
1362	"-cutplaneopacity" {
1363	set val $_settings($what)
1364	set sval [expr { 0.01 * double($val) }]
1365	SendCmd "cutplane opacity $sval"
1366	}
1367	"-cutplanepreinterp" {
1368	set bool $_settings($what)
1369	SendCmd "cutplane preinterp $bool"
1370	}
1371	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1372	set axis [string tolower [string range $what 1 1]]
1373	set bool $_settings($what)
1374	if { $bool } {
1375	$itk_component(${axis}position) configure -state normal \
1376	-troughcolor white
1377	} else {
1378	$itk_component(${axis}position) configure -state disabled \
1379	-troughcolor grey82
1380	}
1381	SendCmd "cutplane axis $axis $bool"
1382	}
1383	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1384	set axis [string tolower [string range $what 1 1]]
1385	set pos [expr $_settings($what) * 0.01]
1386	SendCmd "cutplane slice ${axis} ${pos}"
1387	set _cutplanePending 0
1388	}
1389	"-colormap" {
1390	set _changed(-colormap) 1
1391	StartBufferingCommands
1392	set color [$itk_component(colormap) value]
1393	set _settings(-colormap) $color
1394	if { $color == "none" } {
1395	if { $_settings(-colormapvisible) } {
1396	SendCmd "contour3d colormode constant {}"
1397	set _settings(-colormapvisible) 0
1398	}
1399	} else {
1400	if { !$_settings(-colormapvisible) } {
1401	SendCmd "contour3d colormode $_colorMode $_curFldName"
1402	set _settings(-colormapvisible) 1
1403	}
1404	SetCurrentColormap $color
1405	}
1406	StopBufferingCommands
1407	EventuallyRequestLegend
1408	}
1409	"-numcontours" {
1410	set _settings($what) [$itk_component(numcontours) value]
1411	set _currentNumContours $_settings($what)
1412	UpdateContourList
1413	set _changed($what) 1
1414	SendCmd "contour3d contourlist [list $_contourList]"
1415	DrawLegend
1416	}
1417	"-isosurfacewireframe" {
1418	set bool $_settings($what)
1419	SendCmd "contour3d wireframe $bool"
1420	}
1421	"-isosurfacevisible" {
1422	set bool $_settings($what)
1423	SendCmd "contour3d visible $bool"
1424	if { $bool } {
1425	Rappture::Tooltip::for $itk_component(contour) \
1426	"Hide the isosurface"
1427	} else {
1428	Rappture::Tooltip::for $itk_component(contour) \
1429	"Show the isosurface"
1430	}
1431	DrawLegend
1432	}
1433	"-isosurfacelighting" {
1434	set bool $_settings($what)
1435	SendCmd "contour3d lighting $bool"
1436	}
1437	"-isosurfaceedges" {
1438	set bool $_settings($what)
1439	SendCmd "contour3d edges $bool"
1440	}
1441	"-isosurfaceoutline" {
1442	set bool $_settings($what)
1443	SendCmd "outline visible $bool"
1444	}
1445	"-isolinecolor" {
1446	set color [$itk_component(isolineColor) value]
1447	set _settings($what) $color
1448	DrawLegend
1449	}
1450	"-isosurfaceopacity" {
1451	set val $_settings($what)
1452	set sval [expr { 0.01 * double($val) }]
1453	SendCmd "contour3d opacity $sval"
1454	}
1455	"-field" {
1456	set label [$itk_component(field) value]
1457	set fname [$itk_component(field) translate $label]
1458	set _settings($what) $fname
1459	if { [info exists _fields($fname)] } {
1460	foreach { label units components } $_fields($fname) break
1461	if { $components > 1 } {
1462	set _colorMode vmag
1463	} else {
1464	set _colorMode scalar
1465	}
1466	set _curFldName $fname
1467	set _curFldLabel $label
1468	} else {
1469	puts stderr "unknown field \"$fname\""
1470	return
1471	}
1472	SendCmd "dataset scalar $_curFldName"
1473	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1474	SendCmd "cutplane colormode $_colorMode $_curFldName"
1475	SendCmd "contour3d colormode $_colorMode $_curFldName"
1476	SendCmd "camera reset"
1477	UpdateContourList
1478	DrawLegend
1479	}
1480	"-legendvisible" {
1481	if { !$_settings($what) } {
1482	$itk_component(view) delete legend
1483	}
1484	DrawLegend
1485	}
1486	default {
1487	error "don't know how to fix $what"
1488	}
1489	}
1490	}
1491
1492
1493	#
1494	# RequestLegend --
1495	#
1496	# Request a new legend from the server. The size of the legend
1497	# is determined from the height of the canvas.
1498	#
1499	# This should be called when
1500	# 1. A new current colormap is set.
1501	# 2. Window is resized.
1502	# 3. The limits of the data have changed. (Just need a redraw).
1503	# 4. Number of isolines have changed. (Just need a redraw).
1504	# 5. Legend becomes visible (Just need a redraw).
1505	#
1506	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1507	set _legendPending 0
1508	if { ![info exists _fields($_curFldName)] } {
1509	return
1510	}
1511	set fname $_curFldName
1512	set font "Arial 8"
1513	set lineht [font metrics $font -linespace]
1514	set w 12
1515	set h [expr {$_height - 2 * ($lineht + 2)}]
1516	if { $h < 1 } {
1517	return
1518	}
1519	if { [string match "component*" $fname] } {
1520	set title ""
1521	} else {
1522	if { [info exists _fields($fname)] } {
1523	foreach { title units } $_fields($fname) break
1524	if { $units != "" } {
1525	set title [format "%s (%s)" $title $units]
1526	}
1527	} else {
1528	set title $fname
1529	}
1530	}
1531	# If there's a title too, subtract one more line
1532	if { $title != "" } {
1533	incr h -$lineht
1534	}
1535	# Set the legend on the first heightmap dataset.
1536	if { $_currentColormap != "" } {
1537	set cmap $_currentColormap
1538	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1539	}
1540	}
1541
1542	# ----------------------------------------------------------------------
1543	# CONFIGURATION OPTION: -plotbackground
1544	# ----------------------------------------------------------------------
1545	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1546	if { [isconnected] } {
1547	set rgb [Color2RGB $itk_option(-plotbackground)]
1548	SendCmd "screen bgcolor $rgb"
1549	}
1550	}
1551
1552	# ----------------------------------------------------------------------
1553	# CONFIGURATION OPTION: -plotforeground
1554	# ----------------------------------------------------------------------
1555	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1556	if { [isconnected] } {
1557	set rgb [Color2RGB $itk_option(-plotforeground)]
1558	SendCmd "axis color all $rgb"
1559	SendCmd "outline color $rgb"
1560	SendCmd "cutplane color $rgb"
1561	}
1562	}
1563
1564	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1565	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1566	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1567	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1568	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1569	return [array get limits]
1570	}
1571
1572	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1573
1574	set fg [option get $itk_component(hull) font Font]
1575	#set bfg [option get $itk_component(hull) boldFont Font]
1576
1577	set inner [$itk_component(main) insert end \
1578	-title "Isosurface Settings" \
1579	-icon [Rappture::icon volume-on]]
1580	$inner configure -borderwidth 4
1581
1582	checkbutton $inner.contour \
1583	-text "Isosurfaces" \
1584	-variable [itcl::scope _settings(-isosurfacevisible)] \
1585	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
1586	-font "Arial 9"
1587
1588	checkbutton $inner.wireframe \
1589	-text "Wireframe" \
1590	-variable [itcl::scope _settings(-isosurfacewireframe)] \
1591	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
1592	-font "Arial 9"
1593
1594	checkbutton $inner.lighting \
1595	-text "Enable Lighting" \
1596	-variable [itcl::scope _settings(-isosurfacelighting)] \
1597	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
1598	-font "Arial 9"
1599
1600	checkbutton $inner.edges \
1601	-text "Edges" \
1602	-variable [itcl::scope _settings(-isosurfaceedges)] \
1603	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
1604	-font "Arial 9"
1605
1606	checkbutton $inner.outline \
1607	-text "Outline" \
1608	-variable [itcl::scope _settings(-isosurfaceoutline)] \
1609	-command [itcl::code $this AdjustSetting -isosurfaceoutline] \
1610	-font "Arial 9"
1611
1612	checkbutton $inner.legend \
1613	-text "Legend" \
1614	-variable [itcl::scope _settings(-legendvisible)] \
1615	-command [itcl::code $this AdjustSetting -legendvisible] \
1616	-font "Arial 9"
1617
1618	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1619	itk_component add isolineColor {
1620	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1621	}
1622	$inner.linecolor choices insert end \
1623	"black" "black" \
1624	"blue" "blue" \
1625	"cyan" "cyan" \
1626	"green" "green" \
1627	"grey" "grey" \
1628	"magenta" "magenta" \
1629	"orange" "orange" \
1630	"red" "red" \
1631	"white" "white" \
1632	"none" "none"
1633
1634	$itk_component(isolineColor) value "white"
1635	bind $inner.linecolor <<Value>> \
1636	[itcl::code $this AdjustSetting isolineColor]
1637
1638	label $inner.background_l -text "Background" -font "Arial 9"
1639	itk_component add background {
1640	Rappture::Combobox $inner.background -width 10 -editable 0
1641	}
1642	$inner.background choices insert end \
1643	"black" "black" \
1644	"white" "white" \
1645	"grey" "grey"
1646
1647	$itk_component(background) value $_settings(-background)
1648	bind $inner.background <<Value>> \
1649	[itcl::code $this AdjustSetting -background]
1650
1651	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1652	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1653	-variable [itcl::scope _settings(-isosurfaceopacity)] \
1654	-width 10 \
1655	-showvalue off \
1656	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
1657
1658	label $inner.scale_l -text "Scale" -font "Arial 9"
1659	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1660	-variable [itcl::scope _settings(-contourscale)] \
1661	-width 10 \
1662	-showvalue off \
1663	-command [itcl::code $this AdjustSetting -contourscale]
1664
1665	itk_component add field_l {
1666	label $inner.field_l -text "Field" -font "Arial 9"
1667	} {
1668	ignore -font
1669	}
1670	itk_component add field {
1671	Rappture::Combobox $inner.field -width 10 -editable 0
1672	}
1673	bind $inner.field <<Value>> \
1674	[itcl::code $this AdjustSetting -field]
1675
1676	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1677	itk_component add colormap {
1678	Rappture::Combobox $inner.colormap -width 10 -editable 0
1679	}
1680	$inner.colormap choices insert end \
1681	"BCGYR" "BCGYR" \
1682	"BGYOR" "BGYOR" \
1683	"blue" "blue" \
1684	"blue-to-brown" "blue-to-brown" \
1685	"blue-to-orange" "blue-to-orange" \
1686	"blue-to-grey" "blue-to-grey" \
1687	"green-to-magenta" "green-to-magenta" \
1688	"greyscale" "greyscale" \
1689	"nanohub" "nanohub" \
1690	"rainbow" "rainbow" \
1691	"spectral" "spectral" \
1692	"ROYGB" "ROYGB" \
1693	"RYGCB" "RYGCB" \
1694	"brown-to-blue" "brown-to-blue" \
1695	"grey-to-blue" "grey-to-blue" \
1696	"orange-to-blue" "orange-to-blue"
1697
1698	$itk_component(colormap) value "BCGYR"
1699	bind $inner.colormap <<Value>> \
1700	[itcl::code $this AdjustSetting -colormap]
1701
1702	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1703	itk_component add numcontours {
1704	Rappture::Spinint $inner.numcontours \
1705	-min 0 -max 50 -font "arial 9"
1706	}
1707	$itk_component(numcontours) value $_settings(-numcontours)
1708	bind $itk_component(numcontours) <<Value>> \
1709	[itcl::code $this AdjustSetting -numcontours]
1710
1711	blt::table $inner \
1712	0,0 $inner.field_l -anchor w -pady 2 \
1713	0,1 $inner.field -anchor w -pady 2 -fill x \
1714	1,0 $inner.colormap_l -anchor w -pady 2 \
1715	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1716	2,0 $inner.linecolor_l -anchor w -pady 2 \
1717	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1718	3,0 $inner.background_l -anchor w -pady 2 \
1719	3,1 $inner.background -anchor w -pady 2 -fill x \
1720	4,0 $inner.numcontours_l -anchor w -pady 2 \
1721	4,1 $inner.numcontours -anchor w -pady 2 \
1722	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1723	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1724	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1725	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1726	9,0 $inner.legend -anchor w -pady 2 \
1727	10,0 $inner.opacity_l -anchor w -pady 2 \
1728	10,1 $inner.opacity -fill x -pady 2 -fill x \
1729
1730	blt::table configure $inner r* c* -resize none
1731	blt::table configure $inner r11 c1 -resize expand
1732	}
1733
1734	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1735
1736	set fg [option get $itk_component(hull) font Font]
1737	#set bfg [option get $itk_component(hull) boldFont Font]
1738
1739	set inner [$itk_component(main) insert end \
1740	-title "Axis Settings" \
1741	-icon [Rappture::icon axis2]]
1742	$inner configure -borderwidth 4
1743
1744	checkbutton $inner.visible \
1745	-text "Show Axes" \
1746	-variable [itcl::scope _settings(-axesvisible)] \
1747	-command [itcl::code $this AdjustSetting -axesvisible] \
1748	-font "Arial 9"
1749
1750	checkbutton $inner.labels \
1751	-text "Show Axis Labels" \
1752	-variable [itcl::scope _settings(-axislabelsvisible)] \
1753	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1754	-font "Arial 9"
1755
1756	checkbutton $inner.gridx \
1757	-text "Show X Grid" \
1758	-variable [itcl::scope _settings(-xaxisgrid)] \
1759	-command [itcl::code $this AdjustSetting -xaxisgrid] \
1760	-font "Arial 9"
1761	checkbutton $inner.gridy \
1762	-text "Show Y Grid" \
1763	-variable [itcl::scope _settings(-yaxisgrid)] \
1764	-command [itcl::code $this AdjustSetting -yaxisgrid] \
1765	-font "Arial 9"
1766	checkbutton $inner.gridz \
1767	-text "Show Z Grid" \
1768	-variable [itcl::scope _settings(-zaxisgrid)] \
1769	-command [itcl::code $this AdjustSetting -zaxisgrid] \
1770	-font "Arial 9"
1771
1772	label $inner.mode_l -text "Mode" -font "Arial 9"
1773
1774	itk_component add axisMode {
1775	Rappture::Combobox $inner.mode -width 10 -editable 0
1776	}
1777	$inner.mode choices insert end \
1778	"static_triad" "static" \
1779	"closest_triad" "closest" \
1780	"furthest_triad" "farthest" \
1781	"outer_edges" "outer"
1782	$itk_component(axisMode) value "static"
1783	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1784
1785	blt::table $inner \
1786	0,0 $inner.visible -anchor w -cspan 2 \
1787	1,0 $inner.labels -anchor w -cspan 2 \
1788	2,0 $inner.gridx -anchor w -cspan 2 \
1789	3,0 $inner.gridy -anchor w -cspan 2 \
1790	4,0 $inner.gridz -anchor w -cspan 2 \
1791	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1792	6,0 $inner.mode -fill x -cspan 2
1793
1794	blt::table configure $inner r* c* -resize none
1795	blt::table configure $inner r7 c1 -resize expand
1796	}
1797
1798
1799	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1800	set inner [$itk_component(main) insert end \
1801	-title "Camera Settings" \
1802	-icon [Rappture::icon camera]]
1803	$inner configure -borderwidth 4
1804
1805	label $inner.view_l -text "view" -font "Arial 9"
1806	set f [frame $inner.view]
1807	foreach side { front back left right top bottom } {
1808	button $f.$side -image [Rappture::icon view$side] \
1809	-command [itcl::code $this SetOrientation $side]
1810	Rappture::Tooltip::for $f.$side "Change the view to $side"
1811	pack $f.$side -side left
1812	}
1813
1814	blt::table $inner \
1815	0,0 $inner.view_l -anchor e -pady 2 \
1816	0,1 $inner.view -anchor w -pady 2
1817
1818	set labels { qx qy qz qw xpan ypan zoom }
1819	set row 1
1820	foreach tag $labels {
1821	label $inner.${tag}label -text $tag -font "Arial 9"
1822	entry $inner.${tag} -font "Arial 9" -bg white \
1823	-textvariable [itcl::scope _view($tag)]
1824	bind $inner.${tag} <KeyPress-Return> \
1825	[itcl::code $this camera set ${tag}]
1826	blt::table $inner \
1827	$row,0 $inner.${tag}label -anchor e -pady 2 \
1828	$row,1 $inner.${tag} -anchor w -pady 2
1829	blt::table configure $inner r$row -resize none
1830	incr row
1831	}
1832	checkbutton $inner.ortho \
1833	-text "Orthographic Projection" \
1834	-variable [itcl::scope _view(ortho)] \
1835	-command [itcl::code $this camera set ortho] \
1836	-font "Arial 9"
1837	blt::table $inner \
1838	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1839	blt::table configure $inner r$row -resize none
1840	incr row
1841
1842	blt::table configure $inner c* r* -resize none
1843	blt::table configure $inner c2 -resize expand
1844	blt::table configure $inner r$row -resize expand
1845	}
1846
1847	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1848
1849	set fg [option get $itk_component(hull) font Font]
1850
1851	set inner [$itk_component(main) insert end \
1852	-title "Cutplane Settings" \
1853	-icon [Rappture::icon cutbutton]]
1854
1855	$inner configure -borderwidth 4
1856
1857	checkbutton $inner.visible \
1858	-text "Cutplanes" \
1859	-variable [itcl::scope _settings(-cutplanesvisible)] \
1860	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1861	-font "Arial 9"
1862
1863	checkbutton $inner.wireframe \
1864	-text "Wireframe" \
1865	-variable [itcl::scope _settings(-cutplanewireframe)] \
1866	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1867	-font "Arial 9"
1868
1869	checkbutton $inner.lighting \
1870	-text "Enable Lighting" \
1871	-variable [itcl::scope _settings(-cutplanelighting)] \
1872	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1873	-font "Arial 9"
1874
1875	checkbutton $inner.edges \
1876	-text "Edges" \
1877	-variable [itcl::scope _settings(-cutplaneedges)] \
1878	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1879	-font "Arial 9"
1880
1881	checkbutton $inner.preinterp \
1882	-text "Interpolate Scalars" \
1883	-variable [itcl::scope _settings(-cutplanepreinterp)] \
1884	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
1885	-font "Arial 9"
1886
1887	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1888	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1889	-variable [itcl::scope _settings(-cutplaneopacity)] \
1890	-width 10 \
1891	-showvalue off \
1892	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1893	$inner.opacity set $_settings(-cutplaneopacity)
1894
1895	# X-value slicer...
1896	itk_component add xbutton {
1897	Rappture::PushButton $inner.xbutton \
1898	-onimage [Rappture::icon x-cutplane-red] \
1899	-offimage [Rappture::icon x-cutplane-red] \
1900	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1901	-variable [itcl::scope _settings(-xcutplanevisible)] \
1902	}
1903	Rappture::Tooltip::for $itk_component(xbutton) \
1904	"Toggle the X-axis cutplane on/off"
1905	$itk_component(xbutton) select
1906	itk_component add xposition {
1907	::scale $inner.xval -from 100 -to 0 \
1908	-width 10 -orient vertical -showvalue 1 \
1909	-borderwidth 1 -highlightthickness 0 \
1910	-command [itcl::code $this EventuallySetCutplane x] \
1911	-variable [itcl::scope _settings(-xcutplaneposition)] \
1912	-foreground red2 -font "Arial 9 bold"
1913	} {
1914	usual
1915	ignore -borderwidth -highlightthickness -foreground -font -background
1916	}
1917	# Set the default cutplane value before disabling the scale.
1918	$itk_component(xposition) set 50
1919	$itk_component(xposition) configure -state disabled
1920	Rappture::Tooltip::for $itk_component(xposition) \
1921	"@[itcl::code $this Slice tooltip x]"
1922
1923	# Y-value slicer...
1924	itk_component add ybutton {
1925	Rappture::PushButton $inner.ybutton \
1926	-onimage [Rappture::icon y-cutplane-green] \
1927	-offimage [Rappture::icon y-cutplane-green] \
1928	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1929	-variable [itcl::scope _settings(-ycutplanevisible)] \
1930	}
1931	Rappture::Tooltip::for $itk_component(ybutton) \
1932	"Toggle the Y-axis cutplane on/off"
1933	$itk_component(ybutton) select
1934
1935	itk_component add yposition {
1936	::scale $inner.yval -from 100 -to 0 \
1937	-width 10 -orient vertical -showvalue 1 \
1938	-borderwidth 1 -highlightthickness 0 \
1939	-command [itcl::code $this EventuallySetCutplane y] \
1940	-variable [itcl::scope _settings(-ycutplaneposition)] \
1941	-foreground green3 -font "Arial 9 bold"
1942	} {
1943	usual
1944	ignore -borderwidth -highlightthickness -foreground -font
1945	}
1946	Rappture::Tooltip::for $itk_component(yposition) \
1947	"@[itcl::code $this Slice tooltip y]"
1948	# Set the default cutplane value before disabling the scale.
1949	$itk_component(yposition) set 50
1950	$itk_component(yposition) configure -state disabled
1951
1952	# Z-value slicer...
1953	itk_component add zbutton {
1954	Rappture::PushButton $inner.zbutton \
1955	-onimage [Rappture::icon z-cutplane-blue] \
1956	-offimage [Rappture::icon z-cutplane-blue] \
1957	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1958	-variable [itcl::scope _settings(-zcutplanevisible)] \
1959	} {
1960	usual
1961	ignore -foreground
1962	}
1963	Rappture::Tooltip::for $itk_component(zbutton) \
1964	"Toggle the Z-axis cutplane on/off"
1965	$itk_component(zbutton) select
1966
1967	itk_component add zposition {
1968	::scale $inner.zval -from 100 -to 0 \
1969	-width 10 -orient vertical -showvalue 1 \
1970	-borderwidth 1 -highlightthickness 0 \
1971	-command [itcl::code $this EventuallySetCutplane z] \
1972	-variable [itcl::scope _settings(-zcutplaneposition)] \
1973	-foreground blue3 -font "Arial 9 bold"
1974	} {
1975	usual
1976	ignore -borderwidth -highlightthickness -foreground -font
1977	}
1978	$itk_component(zposition) set 50
1979	$itk_component(zposition) configure -state disabled
1980	Rappture::Tooltip::for $itk_component(zposition) \
1981	"@[itcl::code $this Slice tooltip z]"
1982
1983	blt::table $inner \
1984	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
1985	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
1986	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
1987	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1988	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
1989	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1990	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1991	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
1992	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
1993	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
1994	6,1 $inner.xval -fill y -rspan 4 \
1995	6,2 $inner.yval -fill y -rspan 4 \
1996	6,3 $inner.zval -fill y -rspan 4 \
1997
1998
1999	blt::table configure $inner r* c* -resize none
2000	blt::table configure $inner r9 c4 -resize expand
2001	}
2002
2003
2004
2005	#
2006	# camera --
2007	#
2008	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2009	switch -- $option {
2010	"show" {
2011	puts [array get _view]
2012	}
2013	"set" {
2014	set who [lindex $args 0]
2015	set x $_view($who)
2016	set code [catch { string is double $x } result]
2017	if { $code != 0 \|\| !$result } {
2018	return
2019	}
2020	switch -- $who {
2021	"ortho" {
2022	if {$_view(ortho)} {
2023	SendCmd "camera mode ortho"
2024	} else {
2025	SendCmd "camera mode persp"
2026	}
2027	}
2028	"xpan" - "ypan" {
2029	PanCamera
2030	}
2031	"qx" - "qy" - "qz" - "qw" {
2032	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2033	$_arcball quaternion $q
2034	EventuallyRotate $q
2035	}
2036	"zoom" {
2037	SendCmd "camera zoom $_view(zoom)"
2038	}
2039	}
2040	}
2041	}
2042	}
2043
2044	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2045	set bytes ""
2046	foreach dataobj [get] {
2047	foreach cname [$dataobj components] {
2048	set tag $dataobj-$cname
2049	set contents [$dataobj vtkdata $cname]
2050	append bytes "$contents\n"
2051	}
2052	}
2053	return [list .vtk $bytes]
2054	}
2055
2056	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2057	if { [image width $_image(download)] > 0 &&
2058	[image height $_image(download)] > 0 } {
2059	set bytes [$_image(download) data -format "jpeg -quality 100"]
2060	set bytes [Rappture::encoding::decode -as b64 $bytes]
2061	return [list .jpg $bytes]
2062	}
2063	return ""
2064	}
2065
2066	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2067	Rappture::Balloon $popup \
2068	-title "[Rappture::filexfer::label downloadWord] as..."
2069	set inner [$popup component inner]
2070	label $inner.summary -text "" -anchor w
2071	radiobutton $inner.vtk_button -text "VTK data file" \
2072	-variable [itcl::scope _downloadPopup(format)] \
2073	-font "Arial 9 " \
2074	-value vtk
2075	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2076	radiobutton $inner.image_button -text "Image File" \
2077	-variable [itcl::scope _downloadPopup(format)] \
2078	-font "Arial 9 " \
2079	-value image
2080	Rappture::Tooltip::for $inner.image_button \
2081	"Save as digital image."
2082
2083	button $inner.ok -text "Save" \
2084	-highlightthickness 0 -pady 2 -padx 3 \
2085	-command $command \
2086	-compound left \
2087	-image [Rappture::icon download]
2088
2089	button $inner.cancel -text "Cancel" \
2090	-highlightthickness 0 -pady 2 -padx 3 \
2091	-command [list $popup deactivate] \
2092	-compound left \
2093	-image [Rappture::icon cancel]
2094
2095	blt::table $inner \
2096	0,0 $inner.summary -cspan 2 \
2097	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2098	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2099	4,1 $inner.cancel -width .9i -fill y \
2100	4,0 $inner.ok -padx 2 -width .9i -fill y
2101	blt::table configure $inner r3 -height 4
2102	blt::table configure $inner r4 -pady 4
2103	raise $inner.image_button
2104	$inner.vtk_button invoke
2105	return $inner
2106	}
2107
2108	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2109	# Parse style string.
2110	set tag $dataobj-$comp
2111	array set style {
2112	-color BCGYR
2113	-edges 0
2114	-edgecolor black
2115	-linewidth 1.0
2116	-opacity 0.6
2117	-wireframe 0
2118	-lighting 1
2119	-outline 0
2120	-levels 10
2121	-cutplanesvisible 0
2122	-xcutplanevisible 1
2123	-ycutplanevisible 1
2124	-zcutplanevisible 1
2125	-xcutplaneposition 50
2126	-ycutplaneposition 50
2127	-zcutplaneposition 50
2128	-isosurfacevisible 1
2129	}
2130	array set style [$dataobj style $comp]
2131	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
2132	set style(-opacity) 1
2133	}
2134	SendCmd "cutplane add $tag"
2135	SendCmd "cutplane visible 0 $tag"
2136
2137	# This is too complicated. We want to set the colormap, number of
2138	# isolines and opacity for the dataset. They can be the default values,
2139	# the style hints loaded with the dataset, or set by user controls. As
2140	# datasets get loaded, they first use the defaults that are overidden
2141	# by the style hints. If the user changes the global controls, then that
2142	# overrides everything else. I don't know what it means when global
2143	# controls are specified as style hints by each dataset. It complicates
2144	# the code to handle aberrant cases.
2145
2146	if { $_changed(-isosurfaceopacity) } {
2147	set style(-opacity) $_settings(-isosurfaceopacity)
2148	}
2149	if { $_changed(-numcontours) } {
2150	set style(-levels) $_settings(-numcontours)
2151	}
2152	if { $_changed(-colormap) } {
2153	set style(-color) $_settings(-colormap)
2154	}
2155	if { $_currentColormap == "" } {
2156	SetCurrentColormap $style(-color)
2157	$itk_component(colormap) value $style(-color)
2158	}
2159	set _currentOpacity $style(-opacity)
2160	if { $_currentNumContours != $style(-levels) } {
2161	set _currentNumContours $style(-levels)
2162	set _settings(-numcontours) $_currentNumContours
2163	$itk_component(numcontours) value $_currentNumContours
2164	UpdateContourList
2165	DrawLegend
2166	}
2167	set _settings(-isosurfacevisible) $style(-isosurfacevisible)
2168	set _settings(-cutplanesvisible) $style(-cutplanesvisible)
2169	set _settings(-xcutplanevisible) $style(-xcutplanevisible)
2170	set _settings(-ycutplanevisible) $style(-ycutplanevisible)
2171	set _settings(-zcutplanevisible) $style(-zcutplanevisible)
2172	set _settings(-xcutplaneposition) $style(-xcutplaneposition)
2173	set _settings(-ycutplaneposition) $style(-ycutplaneposition)
2174	set _settings(-zcutplaneposition) $style(-zcutplaneposition)
2175
2176	SendCmd [list contour3d add contourlist $_contourList $tag]
2177	SendCmd "contour3d edges $style(-edges) $tag"
2178	SendCmd "outline add $tag"
2179	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2180	SendCmd "outline visible $style(-outline) $tag"
2181	set _settings(-isosurfaceoutline) $style(-outline)
2182	set _settings(-isosurfaceedges) $style(-edges)
2183	#SendCmd "contour3d color [Color2RGB $settings(-color)] $tag"
2184	SendCmd "contour3d lighting $style(-lighting) $tag"
2185	set _settings(-isosurfacelighting) $style(-lighting)
2186	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
2187	SendCmd "contour3d linewidth $style(-linewidth) $tag"
2188	SendCmd "contour3d opacity $_currentOpacity $tag"
2189	set _settings(-isosurfaceopacity) $style(-opacity)
2190	SetCurrentColormap $style(-color)
2191	SendCmd "contour3d wireframe $style(-wireframe) $tag"
2192	set _settings(-isosurfacewireframe) $style(-wireframe)
2193	set _settings(-isosurfaceopacity) [expr $style(-opacity) * 100.0]
2194	}
2195
2196	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
2197	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2198	return 0
2199	}
2200	return 1
2201	}
2202
2203	#
2204	# EnterLegend --
2205	#
2206	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
2207	SetLegendTip $x $y
2208	}
2209
2210	#
2211	# MotionLegend --
2212	#
2213	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
2214	Rappture::Tooltip::tooltip cancel
2215	set c $itk_component(view)
2216	set cw [winfo width $c]
2217	set ch [winfo height $c]
2218	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2219	SetLegendTip $x $y
2220	}
2221	}
2222
2223	#
2224	# LeaveLegend --
2225	#
2226	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
2227	Rappture::Tooltip::tooltip cancel
2228	.rappturetooltip configure -icon ""
2229	}
2230
2231	#
2232	# SetLegendTip --
2233	#
2234	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
2235	set fname $_curFldName
2236	set c $itk_component(view)
2237	set w [winfo width $c]
2238	set h [winfo height $c]
2239
2240	set font "Arial 8"
2241	set lineht [font metrics $font -linespace]
2242
2243	set ih [image height $_image(legend)]
2244	set iy [expr $y - ($lineht + 2)]
2245
2246	if { [string match "component*" $fname] } {
2247	set title ""
2248	} else {
2249	if { [info exists _fields($fname)] } {
2250	foreach { title units } $_fields($fname) break
2251	if { $units != "" } {
2252	set title [format "%s (%s)" $title $units]
2253	}
2254	} else {
2255	set title $fname
2256	}
2257	}
2258	# If there's a legend title, increase the offset by the line height.
2259	if { $title != "" } {
2260	incr iy -$lineht
2261	}
2262	# Make a swatch of the selected color
2263	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2264	return
2265	}
2266	if { ![info exists _image(swatch)] } {
2267	set _image(swatch) [image create photo -width 24 -height 24]
2268	}
2269	set color [eval format "\#%02x%02x%02x" $pixel]
2270	$_image(swatch) put black -to 0 0 23 23
2271	$_image(swatch) put $color -to 1 1 22 22
2272	.rappturetooltip configure -icon $_image(swatch)
2273
2274	# Compute the value of the point
2275	if { [info exists _limits($_curFldName)] } {
2276	foreach { vmin vmax } $_limits($_curFldName) break
2277	set t [expr 1.0 - (double($iy) / double($ih-1))]
2278	set value [expr $t * ($vmax - $vmin) + $vmin]
2279	} else {
2280	set value 0.0
2281	}
2282	set tx [expr $x + 15]
2283	set ty [expr $y - 5]
2284	if { [info exists _isolines($y)] } {
2285	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
2286	} else {
2287	Rappture::Tooltip::text $c [format "$title %g" $value]
2288	}
2289	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2290	}
2291
2292
2293	# ----------------------------------------------------------------------
2294	# USAGE: Slice move x\|y\|z <newval>
2295	#
2296	# Called automatically when the user drags the slider to move the
2297	# cut plane that slices 3D data. Gets the current value from the
2298	# slider and moves the cut plane to the appropriate point in the
2299	# data set.
2300	# ----------------------------------------------------------------------
2301	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
2302	switch -- $option {
2303	"move" {
2304	set axis [lindex $args 0]
2305	set newval [lindex $args 1]
2306	if {[llength $args] != 2} {
2307	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2308	}
2309	set newpos [expr {0.01*$newval}]
2310	SendCmd "cutplane slice $axis $newpos"
2311	}
2312	"tooltip" {
2313	set axis [lindex $args 0]
2314	set val [$itk_component(${axis}position) get]
2315	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2316	}
2317	default {
2318	error "bad option \"$option\": should be axis, move, or tooltip"
2319	}
2320	}
2321	}
2322
2323	#
2324	# ReceiveLegend --
2325	#
2326	# Invoked automatically whenever the "legend" command comes in from
2327	# the rendering server. Indicates that binary image data with the
2328	# specified <size> will follow.
2329	#
2330	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2331	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2332	set _title $title
2333	regsub {\(mag\)} $title "" _title
2334	if { [IsConnected] } {
2335	set bytes [ReceiveBytes $size]
2336	if { ![info exists _image(legend)] } {
2337	set _image(legend) [image create photo]
2338	}
2339	$_image(legend) configure -data $bytes
2340	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2341	if { [catch {DrawLegend} errs] != 0 } {
2342	global errorInfo
2343	puts stderr "errs=$errs errorInfo=$errorInfo"
2344	}
2345	}
2346	}
2347
2348	#
2349	# DrawLegend --
2350	#
2351	# Draws the legend in the own canvas on the right side of the plot area.
2352	#
2353	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2354	set fname $_curFldName
2355	set c $itk_component(view)
2356	set w [winfo width $c]
2357	set h [winfo height $c]
2358	set font "Arial 8"
2359	set lineht [font metrics $font -linespace]
2360
2361	if { [string match "component*" $fname] } {
2362	set title ""
2363	} else {
2364	if { [info exists _fields($fname)] } {
2365	foreach { title units } $_fields($fname) break
2366	if { $units != "" } {
2367	set title [format "%s (%s)" $title $units]
2368	}
2369	} else {
2370	set title $fname
2371	}
2372	}
2373	set x [expr $w - 2]
2374	if { !$_settings(-legendvisible) } {
2375	$c delete legend
2376	return
2377	}
2378	if { [$c find withtag "legend"] == "" } {
2379	set y 2
2380	# If there's a legend title, create a text item for the title.
2381	$c create text $x $y \
2382	-anchor ne \
2383	-fill $itk_option(-plotforeground) -tags "title legend" \
2384	-font $font
2385	incr y $lineht
2386	$c create text $x $y \
2387	-anchor ne \
2388	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2389	-font $font
2390	incr y $lineht
2391	$c create image $x $y \
2392	-anchor ne \
2393	-image $_image(legend) -tags "colormap legend"
2394	$c create rectangle $x $y 1 1 \
2395	-fill "" -outline "" -tags "sensor legend"
2396	$c create text $x [expr {$h-2}] \
2397	-anchor se \
2398	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2399	-font $font
2400	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2401	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2402	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2403	}
2404	$c delete isoline
2405	set x2 $x
2406	set iw [image width $_image(legend)]
2407	set ih [image height $_image(legend)]
2408	set x1 [expr $x2 - ($iw*12)/10]
2409	set color $_settings(-isolinecolor)
2410	# Draw the isolines on the legend.
2411	array unset _isolines
2412	if { $color != "none" && [info exists _limits($_curFldName)] &&
2413	$_settings(-numcontours) > 0 } {
2414
2415	foreach { vmin vmax } $_limits($_curFldName) break
2416	set range [expr double($vmax - $vmin)]
2417	if { $range <= 0.0 } {
2418	set range 1.0; # Min is greater or equal to max.
2419	}
2420	set tags "isoline legend"
2421	set offset [expr 2 + $lineht]
2422	if { $title != "" } {
2423	incr offset $lineht
2424	}
2425	foreach value $_contourList {
2426	set norm [expr 1.0 - (($value - $vmin) / $range)]
2427	set y1 [expr int(round(($norm * $ih) + $offset))]
2428	for { set off 0 } { $off < 3 } { incr off } {
2429	set _isolines([expr $y1 + $off]) $value
2430	set _isolines([expr $y1 - $off]) $value
2431	}
2432	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2433	}
2434	}
2435
2436	$c bind title <ButtonPress> [itcl::code $this Combo post]
2437	$c bind title <Enter> [itcl::code $this Combo activate]
2438	$c bind title <Leave> [itcl::code $this Combo deactivate]
2439	# Reset the item coordinates according the current size of the plot.
2440	$c itemconfigure title -text $title
2441	if { [info exists _limits($_curFldName)] } {
2442	foreach { vmin vmax } $_limits($_curFldName) break
2443	$c itemconfigure vmin -text [format %g $vmin]
2444	$c itemconfigure vmax -text [format %g $vmax]
2445	}
2446	set y 2
2447	# If there's a legend title, move the title to the correct position
2448	if { $title != "" } {
2449	$c itemconfigure title -text $title
2450	$c coords title $x $y
2451	incr y $lineht
2452	$c raise title
2453	}
2454	$c coords vmax $x $y
2455	incr y $lineht
2456	$c coords colormap $x $y
2457	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2458	$c raise sensor
2459	$c coords vmin $x [expr {$h - 2}]
2460	}
2461
2462	# ----------------------------------------------------------------------
2463	# USAGE: _dropdown post
2464	# USAGE: _dropdown unpost
2465	# USAGE: _dropdown select
2466	#
2467	# Used internally to handle the dropdown list for this combobox. The
2468	# post/unpost options are invoked when the list is posted or unposted
2469	# to manage the relief of the controlling button. The select option
2470	# is invoked whenever there is a selection from the list, to assign
2471	# the value back to the gauge.
2472	# ----------------------------------------------------------------------
2473	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
2474	set c $itk_component(view)
2475	switch -- $option {
2476	post {
2477	foreach { x1 y1 x2 y2 } [$c bbox title] break
2478	set cw [winfo width $itk_component(view)]
2479	set mw [winfo reqwidth $itk_component(fieldmenu)]
2480	set x1 [expr $cw - $mw]
2481	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2482	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2483	tk_popup $itk_component(fieldmenu) $x $y
2484	}
2485	activate {
2486	$c itemconfigure title -fill red
2487	}
2488	deactivate {
2489	$c itemconfigure title -fill $itk_option(-plotforeground)
2490	}
2491	invoke {
2492	$itk_component(field) value $_curFldLabel
2493	AdjustSetting -field
2494	}
2495	default {
2496	error "bad option \"$option\": should be post, unpost, select"
2497	}
2498	}
2499	}
2500
2501	#
2502	# SetCurrentColormap --
2503	#
2504	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
2505	# Keep track of the colormaps that we build.
2506	if { ![info exists _colormaps($name)] } {
2507	BuildColormap $name
2508	set _colormaps($name) 1
2509	}
2510	set _currentColormap $name
2511	SendCmd "contour3d colormap $_currentColormap"
2512	SendCmd "cutplane colormap $_currentColormap"
2513	}
2514
2515	#
2516	# BuildColormap --
2517	#
2518	# Build the designated colormap on the server.
2519	#
2520	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
2521	set cmap [ColorsToColormap $name]
2522	if { [llength $cmap] == 0 } {
2523	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2524	}
2525	set wmap "0.0 1.0 1.0 1.0"
2526	SendCmd "colormap add $name { $cmap } { $wmap }"
2527	}
2528
2529	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
2530	array set positions {
2531	front "1 0 0 0"
2532	back "0 0 1 0"
2533	left "0.707107 0 -0.707107 0"
2534	right "0.707107 0 0.707107 0"
2535	top "0.707107 -0.707107 0 0"
2536	bottom "0.707107 0.707107 0 0"
2537	}
2538	foreach name { qw qx qy qz } value $positions($side) {
2539	set _view($name) $value
2540	}
2541	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2542	$_arcball quaternion $q
2543	SendCmd "camera orient $q"
2544	SendCmd "camera reset"
2545	set _view(xpan) 0
2546	set _view(ypan) 0
2547	set _view(zoom) 1.0
2548	}
2549
2550	itcl::body Rappture::VtkIsosurfaceViewer::UpdateContourList {} {
2551	if { ![info exists _limits($_curFldName)] } {
2552	return
2553	}
2554	if { $_currentNumContours < 1 } {
2555	set _contourList ""
2556	return
2557	}
2558	foreach { vmin vmax } $_limits($_curFldName) break
2559	set v [blt::vector create \#auto]
2560	$v seq $vmin $vmax [expr $_currentNumContours+2]
2561	$v delete end 0
2562	set _contourList [$v range 0 end]
2563	blt::vector destroy $v
2564	}
2565

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