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source: branches/1.3/gui/scripts/vtkisosurfaceviewer.tcl @ 3780

Last change on this file since 3780 was 3780, checked in by ldelgass, 11 years ago
Legend fixes for glyph/isosurface viewers
File size: 86.8 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 DrawLegend {}
90	private method Combo { option }
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 "vmag"; # Mode of colormap (vmag or scalar)
153	private variable _fieldNames {}
154	private variable _fields
155	private variable _curFldName ""
156	private variable _curFldLabel ""
157	}
158
159	itk::usual VtkIsosurfaceViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
168	package require vtk
169	set _serverType "vtkvis"
170
171	# Rebuild event
172	$_dispatcher register !rebuild
173	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
174
175	# Resize event
176	$_dispatcher register !resize
177	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
178
179	# Rotate event
180	$_dispatcher register !rotate
181	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
182
183	# Legend event
184	$_dispatcher register !legend
185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
186
187	# X-Cutplane event
188	$_dispatcher register !xcutplane
189	$_dispatcher dispatch $this !xcutplane \
190	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
191
192	# Y-Cutplane event
193	$_dispatcher register !ycutplane
194	$_dispatcher dispatch $this !ycutplane \
195	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
196
197	# Z-Cutplane event
198	$_dispatcher register !zcutplane
199	$_dispatcher dispatch $this !zcutplane \
200	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
201
202	#
203	# Populate parser with commands handle incoming requests
204	#
205	$_parser alias image [itcl::code $this ReceiveImage]
206	$_parser alias dataset [itcl::code $this ReceiveDataset]
207	$_parser alias legend [itcl::code $this ReceiveLegend]
208
209	# Initialize the view to some default parameters.
210	array set _view {
211	qw 0.853553
212	qx -0.353553
213	qy 0.353553
214	qz 0.146447
215	zoom 1.0
216	xpan 0
217	ypan 0
218	ortho 0
219	}
220	set _arcball [blt::arcball create 100 100]
221	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
222	$_arcball quaternion $q
223
224	array set _settings [subst {
225	background black
226	colormap BCGYR
227	colormapVisible 1
228	field "Default"
229	isolineColor white
230	axesVisible 1
231	axisLabelsVisible 1
232	axisXGrid 0
233	axisYGrid 0
234	axisZGrid 0
235	cutplaneEdges 0
236	cutplaneLighting 1
237	cutplanePreinterp 0
238	cutplaneOpacity 100
239	cutplaneVisible 0
240	cutplaneWireframe 0
241	cutplaneXPosition 50
242	cutplaneXVisible 1
243	cutplaneYPosition 50
244	cutplaneYVisible 1
245	cutplaneZPosition 50
246	cutplaneZVisible 1
247	isosurfaceEdges 0
248	isosurfaceLighting 1
249	isosurfaceOpacity 60
250	saveIsosurfaceOpacity 60
251	isosurfaceOutline 0
252	isosurfaceVisible 1
253	isosurfaceWireframe 0
254	legendVisible 1
255	numContours 10
256	}]
257	array set _changed {
258	isosurfaceOpacity 0
259	colormap 0
260	numContours 0
261	}
262
263	itk_component add view {
264	canvas $itk_component(plotarea).view \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270
271	itk_component add fieldmenu {
272	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
273	-tearoff no
274	} {
275	usual
276	ignore -background -foreground -relief -tearoff
277	}
278	set c $itk_component(view)
279	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
280	bind $c <4> [itcl::code $this Zoom in 0.25]
281	bind $c <5> [itcl::code $this Zoom out 0.25]
282	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
283	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
284	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
285	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
286	bind $c <Enter> "focus %W"
287	bind $c <Control-F1> [itcl::code $this ToggleConsole]
288
289	# Fix the scrollregion in case we go off screen
290	$c configure -scrollregion [$c bbox all]
291
292	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
293	set _map(cwidth) -1
294	set _map(cheight) -1
295	set _map(zoom) 1.0
296	set _map(original) ""
297
298	set f [$itk_component(main) component controls]
299	itk_component add reset {
300	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon reset-view] \
303	-command [itcl::code $this Zoom reset]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(reset) -side top -padx 2 -pady 2
309	Rappture::Tooltip::for $itk_component(reset) \
310	"Reset the view to the default zoom level"
311
312	itk_component add zoomin {
313	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
314	-highlightthickness 0 \
315	-image [Rappture::icon zoom-in] \
316	-command [itcl::code $this Zoom in]
317	} {
318	usual
319	ignore -highlightthickness
320	}
321	pack $itk_component(zoomin) -side top -padx 2 -pady 2
322	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
323
324	itk_component add zoomout {
325	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
326	-highlightthickness 0 \
327	-image [Rappture::icon zoom-out] \
328	-command [itcl::code $this Zoom out]
329	} {
330	usual
331	ignore -highlightthickness
332	}
333	pack $itk_component(zoomout) -side top -padx 2 -pady 2
334	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
335
336	itk_component add contour {
337	Rappture::PushButton $f.contour \
338	-onimage [Rappture::icon volume-on] \
339	-offimage [Rappture::icon volume-off] \
340	-variable [itcl::scope _settings(isosurfaceVisible)] \
341	-command [itcl::code $this AdjustSetting isosurfaceVisible]
342	}
343	$itk_component(contour) select
344	Rappture::Tooltip::for $itk_component(contour) \
345	"Don't display the isosurface"
346	pack $itk_component(contour) -padx 2 -pady 2
347
348	itk_component add cutplane {
349	Rappture::PushButton $f.cutplane \
350	-onimage [Rappture::icon cutbutton] \
351	-offimage [Rappture::icon cutbutton] \
352	-variable [itcl::scope _settings(cutplaneVisible)] \
353	-command [itcl::code $this AdjustSetting cutplaneVisible]
354	}
355	Rappture::Tooltip::for $itk_component(cutplane) \
356	"Show/Hide cutplanes"
357	pack $itk_component(cutplane) -padx 2 -pady 2
358
359
360	if { [catch {
361	BuildIsosurfaceTab
362	BuildCutplaneTab
363	BuildAxisTab
364	BuildCameraTab
365	} errs] != 0 } {
366	puts stderr errs=$errs
367	}
368	# Legend
369
370	set _image(legend) [image create photo]
371	itk_component add legend {
372	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
373	} {
374	usual
375	ignore -highlightthickness
376	rename -background -plotbackground plotBackground Background
377	}
378
379	# Hack around the Tk panewindow. The problem is that the requested
380	# size of the 3d view isn't set until an image is retrieved from
381	# the server. So the panewindow uses the tiny size.
382	set w 10000
383	pack forget $itk_component(view)
384	blt::table $itk_component(plotarea) \
385	0,0 $itk_component(view) -fill both -reqwidth $w
386	blt::table configure $itk_component(plotarea) c1 -resize none
387
388	# Bindings for rotation via mouse
389	bind $itk_component(view) <ButtonPress-1> \
390	[itcl::code $this Rotate click %x %y]
391	bind $itk_component(view) <B1-Motion> \
392	[itcl::code $this Rotate drag %x %y]
393	bind $itk_component(view) <ButtonRelease-1> \
394	[itcl::code $this Rotate release %x %y]
395
396	# Bindings for panning via mouse
397	bind $itk_component(view) <ButtonPress-2> \
398	[itcl::code $this Pan click %x %y]
399	bind $itk_component(view) <B2-Motion> \
400	[itcl::code $this Pan drag %x %y]
401	bind $itk_component(view) <ButtonRelease-2> \
402	[itcl::code $this Pan release %x %y]
403
404	#bind $itk_component(view) <ButtonRelease-3> \
405	# [itcl::code $this Pick %x %y]
406
407	# Bindings for panning via keyboard
408	bind $itk_component(view) <KeyPress-Left> \
409	[itcl::code $this Pan set -10 0]
410	bind $itk_component(view) <KeyPress-Right> \
411	[itcl::code $this Pan set 10 0]
412	bind $itk_component(view) <KeyPress-Up> \
413	[itcl::code $this Pan set 0 -10]
414	bind $itk_component(view) <KeyPress-Down> \
415	[itcl::code $this Pan set 0 10]
416	bind $itk_component(view) <Shift-KeyPress-Left> \
417	[itcl::code $this Pan set -2 0]
418	bind $itk_component(view) <Shift-KeyPress-Right> \
419	[itcl::code $this Pan set 2 0]
420	bind $itk_component(view) <Shift-KeyPress-Up> \
421	[itcl::code $this Pan set 0 -2]
422	bind $itk_component(view) <Shift-KeyPress-Down> \
423	[itcl::code $this Pan set 0 2]
424
425	# Bindings for zoom via keyboard
426	bind $itk_component(view) <KeyPress-Prior> \
427	[itcl::code $this Zoom out]
428	bind $itk_component(view) <KeyPress-Next> \
429	[itcl::code $this Zoom in]
430
431	bind $itk_component(view) <Enter> "focus $itk_component(view)"
432
433	if {[string equal "x11" [tk windowingsystem]]} {
434	# Bindings for zoom via mouse
435	bind $itk_component(view) <4> [itcl::code $this Zoom out]
436	bind $itk_component(view) <5> [itcl::code $this Zoom in]
437	}
438
439	set _image(download) [image create photo]
440
441	eval itk_initialize $args
442	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	foreach {opt val} $settings {
536	if {![info exists params($opt)]} {
537	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
538	}
539	set params($opt) $val
540	}
541	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
542	# can't handle -autocolors yet
543	set params(-color) black
544	}
545	set pos [lsearch -exact $dataobj $_dlist]
546	if {$pos < 0} {
547	lappend _dlist $dataobj
548	}
549	set _obj2ovride($dataobj-color) $params(-color)
550	set _obj2ovride($dataobj-width) $params(-width)
551	set _obj2ovride($dataobj-raise) $params(-raise)
552	$_dispatcher event -idle !rebuild
553	}
554
555
556	# ----------------------------------------------------------------------
557	# USAGE: delete ?<dataobj1> <dataobj2> ...?
558	#
559	# Clients use this to delete a dataobj from the plot. If no dataobjs
560	# are specified, then all dataobjs are deleted. No data objects are
561	# deleted. They are only removed from the display list.
562	#
563	# ----------------------------------------------------------------------
564	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
565	if { [llength $args] == 0} {
566	set args $_dlist
567	}
568	# Delete all specified dataobjs
569	set changed 0
570	foreach dataobj $args {
571	set pos [lsearch -exact $_dlist $dataobj]
572	if { $pos < 0 } {
573	continue; # Don't know anything about it.
574	}
575	# Remove it from the dataobj list.
576	set _dlist [lreplace $_dlist $pos $pos]
577	SendCmd "dataset visible 0"
578	array unset _obj2ovride $dataobj-*
579	array unset _settings $dataobj-*
580	# Append to the end of the dataobj list.
581	lappend _dlist $dataobj
582	set changed 1
583	}
584	# If anything changed, then rebuild the plot
585	if { $changed } {
586	$_dispatcher event -idle !rebuild
587	}
588	}
589
590	# ----------------------------------------------------------------------
591	# USAGE: get ?-objects?
592	# USAGE: get ?-visible?
593	# USAGE: get ?-image view?
594	#
595	# Clients use this to query the list of objects being plotted, in
596	# order from bottom to top of this result. The optional "-image"
597	# flag can also request the internal images being shown.
598	# ----------------------------------------------------------------------
599	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
600	if {[llength $args] == 0} {
601	set args "-objects"
602	}
603
604	set op [lindex $args 0]
605	switch -- $op {
606	"-objects" {
607	# put the dataobj list in order according to -raise options
608	set dlist {}
609	foreach dataobj $_dlist {
610	if { ![IsValidObject $dataobj] } {
611	continue
612	}
613	if {[info exists _obj2ovride($dataobj-raise)] &&
614	$_obj2ovride($dataobj-raise)} {
615	set dlist [linsert $dlist 0 $dataobj]
616	} else {
617	lappend dlist $dataobj
618	}
619	}
620	return $dlist
621	}
622	"-visible" {
623	set dlist {}
624	foreach dataobj $_dlist {
625	if { ![IsValidObject $dataobj] } {
626	continue
627	}
628	if { ![info exists _obj2ovride($dataobj-raise)] } {
629	# No setting indicates that the object isn't visible.
630	continue
631	}
632	# Otherwise use the -raise parameter to put the object to
633	# the front of the list.
634	if { $_obj2ovride($dataobj-raise) } {
635	set dlist [linsert $dlist 0 $dataobj]
636	} else {
637	lappend dlist $dataobj
638	}
639	}
640	return $dlist
641	}
642	-image {
643	if {[llength $args] != 2} {
644	error "wrong # args: should be \"get -image view\""
645	}
646	switch -- [lindex $args end] {
647	view {
648	return $_image(plot)
649	}
650	default {
651	error "bad image name \"[lindex $args end]\": should be view"
652	}
653	}
654	}
655	default {
656	error "bad option \"$op\": should be -objects or -image"
657	}
658	}
659	}
660
661	# ----------------------------------------------------------------------
662	# USAGE: scale ?<data1> <data2> ...?
663	#
664	# Sets the default limits for the overall plot according to the
665	# limits of the data for all of the given <data> objects. This
666	# accounts for all objects--even those not showing on the screen.
667	# Because of this, the limits are appropriate for all objects as
668	# the user scans through data in the ResultSet viewer.
669	# ----------------------------------------------------------------------
670	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
671	foreach dataobj $args {
672	if { ![$dataobj isvalid] } {
673	continue; # Object doesn't contain valid data.
674	}
675	foreach axis { x y z } {
676	set lim [$dataobj limits $axis]
677	if { ![info exists _limits($axis)] } {
678	set _limits($axis) $lim
679	continue
680	}
681	foreach {min max} $lim break
682	foreach {amin amax} $_limits($axis) break
683	if { $amin > $min } {
684	set amin $min
685	}
686	if { $amax < $max } {
687	set amax $max
688	}
689	set _limits($axis) [list $amin $amax]
690	}
691	foreach { fname lim } [$dataobj fieldlimits] {
692	if { ![info exists _limits($fname)] } {
693	set _limits($fname) $lim
694	continue
695	}
696	foreach {min max} $lim break
697	foreach {fmin fmax} $_limits($fname) break
698	if { $fmin > $min } {
699	set fmin $min
700	}
701	if { $fmax < $max } {
702	set fmax $max
703	}
704	set _limits($fname) [list $fmin $fmax]
705	}
706	}
707	}
708
709	# ----------------------------------------------------------------------
710	# USAGE: download coming
711	# USAGE: download controls <downloadCommand>
712	# USAGE: download now
713	#
714	# Clients use this method to create a downloadable representation
715	# of the plot. Returns a list of the form {ext string}, where
716	# "ext" is the file extension (indicating the type of data) and
717	# "string" is the data itself.
718	# ----------------------------------------------------------------------
719	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
720	switch $option {
721	coming {
722	if {[catch {
723	blt::winop snap $itk_component(plotarea) $_image(download)
724	}]} {
725	$_image(download) configure -width 1 -height 1
726	$_image(download) put #000000
727	}
728	}
729	controls {
730	set popup .vtkviewerdownload
731	if { ![winfo exists .vtkviewerdownload] } {
732	set inner [BuildDownloadPopup $popup [lindex $args 0]]
733	} else {
734	set inner [$popup component inner]
735	}
736	set _downloadPopup(image_controls) $inner.image_frame
737	set num [llength [get]]
738	set num [expr {($num == 1) ? "1 result" : "$num results"}]
739	set word [Rappture::filexfer::label downloadWord]
740	$inner.summary configure -text "$word $num in the following format:"
741	update idletasks ;# Fix initial sizes
742	return $popup
743	}
744	now {
745	set popup .vtkviewerdownload
746	if {[winfo exists .vtkviewerdownload]} {
747	$popup deactivate
748	}
749	switch -- $_downloadPopup(format) {
750	"image" {
751	return [$this GetImage [lindex $args 0]]
752	}
753	"vtk" {
754	return [$this GetVtkData [lindex $args 0]]
755	}
756	}
757	return ""
758	}
759	default {
760	error "bad option \"$option\": should be coming, controls, now"
761	}
762	}
763	}
764
765	# ----------------------------------------------------------------------
766	# USAGE: Connect ?<host:port>,<host:port>...?
767	#
768	# Clients use this method to establish a connection to a new
769	# server, or to reestablish a connection to the previous server.
770	# Any existing connection is automatically closed.
771	# ----------------------------------------------------------------------
772	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
773	set _hosts [GetServerList "vtkvis"]
774	if { "" == $_hosts } {
775	return 0
776	}
777	set result [VisViewer::Connect $_hosts]
778	if { $result } {
779	if { $_reportClientInfo } {
780	# Tell the server the viewer, hub, user and session.
781	# Do this immediately on connect before buffing any commands
782	global env
783
784	set info {}
785	set user "???"
786	if { [info exists env(USER)] } {
787	set user $env(USER)
788	}
789	set session "???"
790	if { [info exists env(SESSION)] } {
791	set session $env(SESSION)
792	}
793	lappend info "hub" [exec hostname]
794	lappend info "client" "vtkisosurfaceviewer"
795	lappend info "user" $user
796	lappend info "session" $session
797	SendCmd "clientinfo [list $info]"
798	}
799
800	set w [winfo width $itk_component(view)]
801	set h [winfo height $itk_component(view)]
802	EventuallyResize $w $h
803	}
804	return $result
805	}
806
807	#
808	# isconnected --
809	#
810	# Indicates if we are currently connected to the visualization server.
811	#
812	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
813	return [VisViewer::IsConnected]
814	}
815
816	#
817	# disconnect --
818	#
819	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
820	Disconnect
821	set _reset 1
822	}
823
824	#
825	# Disconnect --
826	#
827	# Clients use this method to disconnect from the current rendering
828	# server.
829	#
830	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
831	VisViewer::Disconnect
832
833	$_dispatcher cancel !rebuild
834	$_dispatcher cancel !resize
835	$_dispatcher cancel !rotate
836	$_dispatcher cancel !xcutplane
837	$_dispatcher cancel !ycutplane
838	$_dispatcher cancel !zcutplane
839	$_dispatcher cancel !legend
840	# disconnected -- no more data sitting on server
841	set _outbuf ""
842	array unset _datasets
843	array unset _data
844	array unset _colormaps
845	array unset _seeds
846	array unset _dataset2style
847	array unset _obj2datasets
848	}
849
850	# ----------------------------------------------------------------------
851	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
852	#
853	# Invoked automatically whenever the "image" command comes in from
854	# the rendering server. Indicates that binary image data with the
855	# specified <size> will follow.
856	# ----------------------------------------------------------------------
857	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
858	array set info {
859	-token "???"
860	-bytes 0
861	-type image
862	}
863	array set info $args
864	set bytes [ReceiveBytes $info(-bytes)]
865	if { $info(-type) == "image" } {
866	if 0 {
867	set f [open "last.ppm" "w"]
868	puts $f $bytes
869	close $f
870	}
871	$_image(plot) configure -data $bytes
872	set time [clock seconds]
873	set date [clock format $time]
874	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
875	if { $_start > 0 } {
876	set finish [clock clicks -milliseconds]
877	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
878	set _start 0
879	}
880	} elseif { $info(type) == "print" } {
881	set tag $this-print-$info(-token)
882	set _hardcopy($tag) $bytes
883	}
884	EventuallyRequestLegend
885	}
886
887	#
888	# ReceiveDataset --
889	#
890	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
891	if { ![isconnected] } {
892	return
893	}
894	set option [lindex $args 0]
895	switch -- $option {
896	"scalar" {
897	set option [lindex $args 1]
898	switch -- $option {
899	"world" {
900	foreach { x y z value tag } [lrange $args 2 end] break
901	}
902	"pixel" {
903	foreach { x y value tag } [lrange $args 2 end] break
904	}
905	}
906	}
907	"vector" {
908	set option [lindex $args 1]
909	switch -- $option {
910	"world" {
911	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
912	}
913	"pixel" {
914	foreach { x y vx vy vz tag } [lrange $args 2 end] break
915	}
916	}
917	}
918	"names" {
919	foreach { name } [lindex $args 1] {
920	#puts stderr "Dataset: $name"
921	}
922	}
923	default {
924	error "unknown dataset option \"$option\" from server"
925	}
926	}
927	}
928
929	# ----------------------------------------------------------------------
930	# USAGE: Rebuild
931	#
932	# Called automatically whenever something changes that affects the
933	# data in the widget. Clears any existing data and rebuilds the
934	# widget to display new data.
935	# ----------------------------------------------------------------------
936	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
937	set w [winfo width $itk_component(view)]
938	set h [winfo height $itk_component(view)]
939	if { $w < 2 \|\| $h < 2 } {
940	$_dispatcher event -idle !rebuild
941	return
942	}
943
944	# Turn on buffering of commands to the server. We don't want to
945	# be preempted by a server disconnect/reconnect (which automatically
946	# generates a new call to Rebuild).
947	StartBufferingCommands
948
949	if { $_reset } {
950	set _width $w
951	set _height $h
952	$_arcball resize $w $h
953	DoResize
954	#
955	# Reset the camera and other view parameters
956	#
957	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
958	$_arcball quaternion $q
959	if {$_view(ortho)} {
960	SendCmd "camera mode ortho"
961	} else {
962	SendCmd "camera mode persp"
963	}
964	DoRotate
965	PanCamera
966	set _first ""
967	InitSettings axisXGrid axisYGrid axisZGrid axisMode \
968	axesVisible axisLabelsVisible
969	foreach axis { x y z } {
970	SendCmd "axis lformat $axis %g"
971	}
972	StopBufferingCommands
973	SendCmd "imgflush"
974	StartBufferingCommands
975	}
976	set _first ""
977	SendCmd "dataset visible 0"
978	foreach dataobj [get -objects] {
979	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
980	set _first $dataobj
981	}
982	set _obj2datasets($dataobj) ""
983	foreach comp [$dataobj components] {
984	set tag $dataobj-$comp
985	if { ![info exists _datasets($tag)] } {
986	set bytes [$dataobj vtkdata $comp]
987	if 0 {
988	set f [open "/tmp/isosurface.vtk" "w"]
989	puts $f $bytes
990	close $f
991	}
992	set length [string length $bytes]
993	if { $_reportClientInfo } {
994	set info {}
995	lappend info "tool_id" [$dataobj hints toolId]
996	lappend info "tool_name" [$dataobj hints toolName]
997	lappend info "tool_version" [$dataobj hints toolRevision]
998	lappend info "tool_title" [$dataobj hints toolTitle]
999	lappend info "dataset_label" [$dataobj hints label]
1000	lappend info "dataset_size" $length
1001	lappend info "dataset_tag" $tag
1002	SendCmd "clientinfo [list $info]"
1003	}
1004	append _outbuf "dataset add $tag data follows $length\n"
1005	append _outbuf $bytes
1006	set _datasets($tag) 1
1007	SetObjectStyle $dataobj $comp
1008	}
1009	lappend _obj2datasets($dataobj) $tag
1010	if { [info exists _obj2ovride($dataobj-raise)] } {
1011	# Setting dataset visible enables outline (if enabled)
1012	# and contour3d
1013	SendCmd "dataset visible 1 $tag"
1014	}
1015	}
1016	}
1017
1018	if { $_first != "" } {
1019	$itk_component(field) choices delete 0 end
1020	$itk_component(fieldmenu) delete 0 end
1021	array unset _fields
1022	set _curFldName ""
1023	foreach cname [$_first components] {
1024	foreach fname [$_first fieldnames $cname] {
1025	if { [info exists _fields($fname)] } {
1026	continue
1027	}
1028	foreach { label units components } \
1029	[$_first fieldinfo $fname] break
1030	$itk_component(field) choices insert end "$fname" "$label"
1031	$itk_component(fieldmenu) add radiobutton -label "$label" \
1032	-value $label -variable [itcl::scope _curFldLabel] \
1033	-selectcolor red \
1034	-activebackground $itk_option(-plotbackground) \
1035	-activeforeground $itk_option(-plotforeground) \
1036	-font "Arial 8" \
1037	-command [itcl::code $this Combo invoke]
1038	set _fields($fname) [list $label $units $components]
1039	if { $_curFldName == "" } {
1040	set _curFldName $fname
1041	set _curFldLabel $label
1042	}
1043	}
1044	}
1045	$itk_component(field) value $_curFldLabel
1046	}
1047	InitSettings cutplaneVisible
1048	if { $_reset } {
1049	# These are settings that rely on a dataset being loaded.
1050	InitSettings \
1051	isosurfaceLighting \
1052	field \
1053	isosurfaceEdges isosurfaceLighting isosurfaceOpacity \
1054	isosurfaceWireframe isosurfaceOutline \
1055	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1056	cutplaneXVisible cutplaneYVisible cutplaneZVisible \
1057	cutplanePreinterp numContours
1058
1059	Zoom reset
1060	foreach axis { x y z } {
1061	# Another problem fixed by a <view>. We looking into a data
1062	# object for the name of the axes. This should be global to
1063	# the viewer itself.
1064	set label [$_first hints ${axis}label]
1065	if { $label == "" } {
1066	set label [string toupper $axis]
1067	}
1068	# May be a space in the axis label.
1069	SendCmd [list axis name $axis $label]
1070	}
1071	if { [array size _fields] < 2 } {
1072	blt::table forget $itk_component(field) $itk_component(field_l)
1073	}
1074	set _reset 0
1075	}
1076
1077	# Actually write the commands to the server socket. If it fails, we don't
1078	# care. We're finished here.
1079	blt::busy hold $itk_component(hull)
1080	StopBufferingCommands; # Turn off buffering and send commands.
1081	blt::busy release $itk_component(hull)
1082	}
1083
1084	# ----------------------------------------------------------------------
1085	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1086	#
1087	# Returns a list of server IDs for the current datasets being displayed. This
1088	# is normally a single ID, but it might be a list of IDs if the current data
1089	# object has multiple components.
1090	# ----------------------------------------------------------------------
1091	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1092	set flag [lindex $args 0]
1093	switch -- $flag {
1094	"-all" {
1095	if { [llength $args] > 1 } {
1096	error "CurrentDatasets: can't specify dataobj after \"-all\""
1097	}
1098	set dlist [get -objects]
1099	}
1100	"-visible" {
1101	if { [llength $args] > 1 } {
1102	set dlist {}
1103	set args [lrange $args 1 end]
1104	foreach dataobj $args {
1105	if { [info exists _obj2ovride($dataobj-raise)] } {
1106	lappend dlist $dataobj
1107	}
1108	}
1109	} else {
1110	set dlist [get -visible]
1111	}
1112	}
1113	default {
1114	set dlist $args
1115	}
1116	}
1117	set rlist ""
1118	foreach dataobj $dlist {
1119	foreach comp [$dataobj components] {
1120	set tag $dataobj-$comp
1121	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1122	lappend rlist $tag
1123	}
1124	}
1125	}
1126	return $rlist
1127	}
1128
1129	# ----------------------------------------------------------------------
1130	# USAGE: Zoom in
1131	# USAGE: Zoom out
1132	# USAGE: Zoom reset
1133	#
1134	# Called automatically when the user clicks on one of the zoom
1135	# controls for this widget. Changes the zoom for the current view.
1136	# ----------------------------------------------------------------------
1137	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1138	switch -- $option {
1139	"in" {
1140	set _view(zoom) [expr {$_view(zoom)*1.25}]
1141	SendCmd "camera zoom $_view(zoom)"
1142	}
1143	"out" {
1144	set _view(zoom) [expr {$_view(zoom)*0.8}]
1145	SendCmd "camera zoom $_view(zoom)"
1146	}
1147	"reset" {
1148	array set _view {
1149	qw 0.853553
1150	qx -0.353553
1151	qy 0.353553
1152	qz 0.146447
1153	zoom 1.0
1154	xpan 0
1155	ypan 0
1156	}
1157	if { $_first != "" } {
1158	set location [$_first hints camera]
1159	if { $location != "" } {
1160	array set _view $location
1161	}
1162	}
1163	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1164	$_arcball quaternion $q
1165	DoRotate
1166	SendCmd "camera reset"
1167	}
1168	}
1169	}
1170
1171	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1172	set x $_view(xpan)
1173	set y $_view(ypan)
1174	SendCmd "camera pan $x $y"
1175	}
1176
1177
1178	# ----------------------------------------------------------------------
1179	# USAGE: Rotate click <x> <y>
1180	# USAGE: Rotate drag <x> <y>
1181	# USAGE: Rotate release <x> <y>
1182	#
1183	# Called automatically when the user clicks/drags/releases in the
1184	# plot area. Moves the plot according to the user's actions.
1185	# ----------------------------------------------------------------------
1186	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1187	switch -- $option {
1188	"click" {
1189	$itk_component(view) configure -cursor fleur
1190	set _click(x) $x
1191	set _click(y) $y
1192	}
1193	"drag" {
1194	if {[array size _click] == 0} {
1195	Rotate click $x $y
1196	} else {
1197	set w [winfo width $itk_component(view)]
1198	set h [winfo height $itk_component(view)]
1199	if {$w <= 0 \|\| $h <= 0} {
1200	return
1201	}
1202
1203	if {[catch {
1204	# this fails sometimes for no apparent reason
1205	set dx [expr {double($x-$_click(x))/$w}]
1206	set dy [expr {double($y-$_click(y))/$h}]
1207	}]} {
1208	return
1209	}
1210	if { $dx == 0 && $dy == 0 } {
1211	return
1212	}
1213	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1214	EventuallyRotate $q
1215	set _click(x) $x
1216	set _click(y) $y
1217	}
1218	}
1219	"release" {
1220	Rotate drag $x $y
1221	$itk_component(view) configure -cursor ""
1222	catch {unset _click}
1223	}
1224	default {
1225	error "bad option \"$option\": should be click, drag, release"
1226	}
1227	}
1228	}
1229
1230	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1231	foreach tag [CurrentDatasets -visible] {
1232	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1233	}
1234	}
1235
1236	# ----------------------------------------------------------------------
1237	# USAGE: $this Pan click x y
1238	# $this Pan drag x y
1239	# $this Pan release x y
1240	#
1241	# Called automatically when the user clicks on one of the zoom
1242	# controls for this widget. Changes the zoom for the current view.
1243	# ----------------------------------------------------------------------
1244	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1245	switch -- $option {
1246	"set" {
1247	set w [winfo width $itk_component(view)]
1248	set h [winfo height $itk_component(view)]
1249	set x [expr $x / double($w)]
1250	set y [expr $y / double($h)]
1251	set _view(xpan) [expr $_view(xpan) + $x]
1252	set _view(ypan) [expr $_view(ypan) + $y]
1253	PanCamera
1254	return
1255	}
1256	"click" {
1257	set _click(x) $x
1258	set _click(y) $y
1259	$itk_component(view) configure -cursor hand1
1260	}
1261	"drag" {
1262	if { ![info exists _click(x)] } {
1263	set _click(x) $x
1264	}
1265	if { ![info exists _click(y)] } {
1266	set _click(y) $y
1267	}
1268	set w [winfo width $itk_component(view)]
1269	set h [winfo height $itk_component(view)]
1270	set dx [expr ($_click(x) - $x)/double($w)]
1271	set dy [expr ($_click(y) - $y)/double($h)]
1272	set _click(x) $x
1273	set _click(y) $y
1274	set _view(xpan) [expr $_view(xpan) - $dx]
1275	set _view(ypan) [expr $_view(ypan) - $dy]
1276	PanCamera
1277	}
1278	"release" {
1279	Pan drag $x $y
1280	$itk_component(view) configure -cursor ""
1281	}
1282	default {
1283	error "unknown option \"$option\": should set, click, drag, or release"
1284	}
1285	}
1286	}
1287
1288	# ----------------------------------------------------------------------
1289	# USAGE: InitSettings <what> ?<value>?
1290	#
1291	# Used internally to update rendering settings whenever parameters
1292	# change in the popup settings panel. Sends the new settings off
1293	# to the back end.
1294	# ----------------------------------------------------------------------
1295	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1296	foreach spec $args {
1297	if { [info exists _settings($_first-$spec)] } {
1298	# Reset global setting with dataobj specific setting
1299	set _settings($spec) $_settings($_first-$spec)
1300	}
1301	AdjustSetting $spec
1302	}
1303	}
1304
1305	#
1306	# AdjustSetting --
1307	#
1308	# Changes/updates a specific setting in the widget. There are
1309	# usually user-setable option. Commands are sent to the render
1310	# server.
1311	#
1312	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1313	if { ![isconnected] } {
1314	return
1315	}
1316	switch -- $what {
1317	"background" {
1318	set bgcolor [$itk_component(background) value]
1319	array set fgcolors {
1320	"black" "white"
1321	"white" "black"
1322	"grey" "black"
1323	}
1324	configure -plotbackground $bgcolor \
1325	-plotforeground $fgcolors($bgcolor)
1326	$itk_component(view) delete "legend"
1327	DrawLegend
1328	}
1329	"axesVisible" {
1330	set bool $_settings(axesVisible)
1331	SendCmd "axis visible all $bool"
1332	}
1333	"axisLabelsVisible" {
1334	set bool $_settings(axisLabelsVisible)
1335	SendCmd "axis labels all $bool"
1336	}
1337	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1338	set axis [string tolower [string range $what 4 4]]
1339	set bool $_settings($what)
1340	SendCmd "axis grid $axis $bool"
1341	}
1342	"axisMode" {
1343	set mode [$itk_component(axisMode) value]
1344	set mode [$itk_component(axisMode) translate $mode]
1345	set _settings($what) $mode
1346	SendCmd "axis flymode $mode"
1347	}
1348	"cutplaneEdges" {
1349	set bool $_settings($what)
1350	SendCmd "cutplane edges $bool"
1351	}
1352	"cutplaneVisible" {
1353	set bool $_settings($what)
1354	SendCmd "cutplane visible $bool"
1355	}
1356	"cutplaneWireframe" {
1357	set bool $_settings($what)
1358	SendCmd "cutplane wireframe $bool"
1359	}
1360	"cutplaneLighting" {
1361	set bool $_settings($what)
1362	SendCmd "cutplane lighting $bool"
1363	}
1364	"cutplaneOpacity" {
1365	set val $_settings($what)
1366	set sval [expr { 0.01 * double($val) }]
1367	SendCmd "cutplane opacity $sval"
1368	}
1369	"cutplanePreinterp" {
1370	set bool $_settings($what)
1371	SendCmd "cutplane preinterp $bool"
1372	}
1373	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1374	set axis [string tolower [string range $what 8 8]]
1375	set bool $_settings($what)
1376	if { $bool } {
1377	$itk_component(${axis}position) configure -state normal \
1378	-troughcolor white
1379	} else {
1380	$itk_component(${axis}position) configure -state disabled \
1381	-troughcolor grey82
1382	}
1383	SendCmd "cutplane axis $axis $bool"
1384	}
1385	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1386	set axis [string tolower [string range $what 8 8]]
1387	set pos [expr $_settings($what) * 0.01]
1388	SendCmd "cutplane slice ${axis} ${pos}"
1389	set _cutplanePending 0
1390	}
1391	"colormap" {
1392	set _changed(colormap) 1
1393	StartBufferingCommands
1394	set color [$itk_component(colormap) value]
1395	set _settings(colormap) $color
1396	if { $color == "none" } {
1397	if { $_settings(colormapVisible) } {
1398	SendCmd "contour3d colormode ccolor {}"
1399	set _settings(colormapVisible) 0
1400	}
1401	} else {
1402	if { !$_settings(colormapVisible) } {
1403	SendCmd "contour3d colormode $_colorMode $_curFldName"
1404	set _settings(colormapVisible) 1
1405	}
1406	SetCurrentColormap $color
1407	}
1408	StopBufferingCommands
1409	EventuallyRequestLegend
1410	}
1411	"numContours" {
1412	set _settings(numContours) [$itk_component(numcontours) value]
1413	set _currentNumContours $_settings(numContours)
1414	UpdateContourList
1415	set _changed(numContours) 1
1416	SendCmd "contour3d contourlist [list $_contourList]"
1417	DrawLegend
1418	}
1419	"isosurfaceWireframe" {
1420	set bool $_settings(isosurfaceWireframe)
1421	SendCmd "contour3d wireframe $bool"
1422	}
1423	"isosurfaceVisible" {
1424	set bool $_settings(isosurfaceVisible)
1425	SendCmd "contour3d visible $bool"
1426	if { $bool } {
1427	Rappture::Tooltip::for $itk_component(contour) \
1428	"Hide the isosurface"
1429	} else {
1430	Rappture::Tooltip::for $itk_component(contour) \
1431	"Show the isosurface"
1432	}
1433	DrawLegend
1434	}
1435	"isosurfaceLighting" {
1436	set bool $_settings(isosurfaceLighting)
1437	SendCmd "contour3d lighting $bool"
1438	}
1439	"isosurfaceEdges" {
1440	set bool $_settings(isosurfaceEdges)
1441	SendCmd "contour3d edges $bool"
1442	}
1443	"isosurfaceOutline" {
1444	set bool $_settings(isosurfaceOutline)
1445	SendCmd "outline visible $bool"
1446	}
1447	"isolineColor" {
1448	set color [$itk_component(isolineColor) value]
1449	set _settings(isolineColor) $color
1450	DrawLegend
1451	}
1452	"isosurfaceOpacity" {
1453	set val $_settings(isosurfaceOpacity)
1454	set sval [expr { 0.01 * double($val) }]
1455	SendCmd "contour3d opacity $sval"
1456	}
1457	"field" {
1458	set label [$itk_component(field) value]
1459	set fname [$itk_component(field) translate $label]
1460	set _settings(field) $fname
1461	if { [info exists _fields($fname)] } {
1462	foreach { label units components } $_fields($fname) break
1463	if { $components > 1 } {
1464	set _colorMode vmag
1465	} else {
1466	set _colorMode scalar
1467	}
1468	set _curFldName $fname
1469	set _curFldLabel $label
1470	} else {
1471	puts stderr "unknown field \"$fname\""
1472	return
1473	}
1474	SendCmd "dataset scalar $_curFldName"
1475	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
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(legendVisible) } {
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 c $itk_component(view)
1517	set w 12
1518	set h [expr {$_height - 2 * ($lineht + 2)}]
1519	if { $h < 1} {
1520	return
1521	}
1522	if { [string match "component*" $fname] } {
1523	set title ""
1524	} else {
1525	if { [info exists _fields($fname)] } {
1526	foreach { title units } $_fields($fname) break
1527	if { $units != "" } {
1528	set title [format "%s (%s)" $title $units]
1529	}
1530	} else {
1531	set title $fname
1532	}
1533	}
1534	# If there's a title too, substract one more line
1535	if { $title != "" } {
1536	incr h -$lineht
1537	}
1538	# Set the legend on the first heightmap dataset.
1539	if { $_currentColormap != "" } {
1540	set cmap $_currentColormap
1541	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1542	}
1543	}
1544
1545	# ----------------------------------------------------------------------
1546	# CONFIGURATION OPTION: -plotbackground
1547	# ----------------------------------------------------------------------
1548	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1549	if { [isconnected] } {
1550	set rgb [Color2RGB $itk_option(-plotbackground)]
1551	SendCmd "screen bgcolor $rgb"
1552	}
1553	}
1554
1555	# ----------------------------------------------------------------------
1556	# CONFIGURATION OPTION: -plotforeground
1557	# ----------------------------------------------------------------------
1558	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1559	if { [isconnected] } {
1560	set rgb [Color2RGB $itk_option(-plotforeground)]
1561	SendCmd "axis color all $rgb"
1562	SendCmd "outline color $rgb"
1563	SendCmd "cutplane ccolor $rgb"
1564	}
1565	}
1566
1567	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1568	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1569	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1570	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1571	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1572	return [array get limits]
1573	}
1574
1575	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1576
1577	set fg [option get $itk_component(hull) font Font]
1578	#set bfg [option get $itk_component(hull) boldFont Font]
1579
1580	set inner [$itk_component(main) insert end \
1581	-title "Isosurface Settings" \
1582	-icon [Rappture::icon volume-on]]
1583	$inner configure -borderwidth 4
1584
1585	checkbutton $inner.contour \
1586	-text "Isosurfaces" \
1587	-variable [itcl::scope _settings(isosurfaceVisible)] \
1588	-command [itcl::code $this AdjustSetting isosurfaceVisible] \
1589	-font "Arial 9"
1590
1591	checkbutton $inner.wireframe \
1592	-text "Wireframe" \
1593	-variable [itcl::scope _settings(isosurfaceWireframe)] \
1594	-command [itcl::code $this AdjustSetting isosurfaceWireframe] \
1595	-font "Arial 9"
1596
1597	checkbutton $inner.lighting \
1598	-text "Enable Lighting" \
1599	-variable [itcl::scope _settings(isosurfaceLighting)] \
1600	-command [itcl::code $this AdjustSetting isosurfaceLighting] \
1601	-font "Arial 9"
1602
1603	checkbutton $inner.edges \
1604	-text "Edges" \
1605	-variable [itcl::scope _settings(isosurfaceEdges)] \
1606	-command [itcl::code $this AdjustSetting isosurfaceEdges] \
1607	-font "Arial 9"
1608
1609	checkbutton $inner.outline \
1610	-text "Outline" \
1611	-variable [itcl::scope _settings(isosurfaceOutline)] \
1612	-command [itcl::code $this AdjustSetting isosurfaceOutline] \
1613	-font "Arial 9"
1614
1615	checkbutton $inner.legend \
1616	-text "Legend" \
1617	-variable [itcl::scope _settings(legendVisible)] \
1618	-command [itcl::code $this AdjustSetting legendVisible] \
1619	-font "Arial 9"
1620
1621	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1622	itk_component add isolineColor {
1623	Rappture::Combobox $inner.linecolor -width 10 -editable no
1624	}
1625	$inner.linecolor choices insert end \
1626	"black" "black" \
1627	"blue" "blue" \
1628	"cyan" "cyan" \
1629	"green" "green" \
1630	"grey" "grey" \
1631	"magenta" "magenta" \
1632	"orange" "orange" \
1633	"red" "red" \
1634	"white" "white" \
1635	"none" "none"
1636
1637	$itk_component(isolineColor) value "white"
1638	bind $inner.linecolor <<Value>> \
1639	[itcl::code $this AdjustSetting isolineColor]
1640
1641	label $inner.background_l -text "Background" -font "Arial 9"
1642	itk_component add background {
1643	Rappture::Combobox $inner.background -width 10 -editable no
1644	}
1645	$inner.background choices insert end \
1646	"black" "black" \
1647	"white" "white" \
1648	"grey" "grey"
1649
1650	$itk_component(background) value $_settings(background)
1651	bind $inner.background <<Value>> [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	label $inner.scale_l -text "Scale" -font "Arial 9"
1661	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1662	-variable [itcl::scope _settings(contour-scale)] \
1663	-width 10 \
1664	-showvalue off \
1665	-command [itcl::code $this AdjustSetting contour-scale]
1666
1667	itk_component add field_l {
1668	label $inner.field_l -text "Field" -font "Arial 9"
1669	} {
1670	ignore -font
1671	}
1672	itk_component add field {
1673	Rappture::Combobox $inner.field -width 10 -editable no
1674	}
1675	bind $inner.field <<Value>> \
1676	[itcl::code $this AdjustSetting field]
1677
1678	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1679	itk_component add colormap {
1680	Rappture::Combobox $inner.colormap -width 10 -editable no
1681	}
1682	$inner.colormap choices insert end \
1683	"BCGYR" "BCGYR" \
1684	"BGYOR" "BGYOR" \
1685	"blue" "blue" \
1686	"blue-to-brown" "blue-to-brown" \
1687	"blue-to-orange" "blue-to-orange" \
1688	"blue-to-grey" "blue-to-grey" \
1689	"green-to-magenta" "green-to-magenta" \
1690	"greyscale" "greyscale" \
1691	"nanohub" "nanohub" \
1692	"rainbow" "rainbow" \
1693	"spectral" "spectral" \
1694	"ROYGB" "ROYGB" \
1695	"RYGCB" "RYGCB" \
1696	"brown-to-blue" "brown-to-blue" \
1697	"grey-to-blue" "grey-to-blue" \
1698	"orange-to-blue" "orange-to-blue"
1699
1700	$itk_component(colormap) value "BCGYR"
1701	bind $inner.colormap <<Value>> \
1702	[itcl::code $this AdjustSetting colormap]
1703
1704	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1705	itk_component add numcontours {
1706	Rappture::Spinint $inner.numcontours \
1707	-min 1 -max 50 -font "arial 9"
1708	}
1709	$itk_component(numcontours) value $_settings(numContours)
1710	bind $itk_component(numcontours) <<Value>> \
1711	[itcl::code $this AdjustSetting numContours]
1712
1713	blt::table $inner \
1714	0,0 $inner.field_l -anchor w -pady 2 \
1715	0,1 $inner.field -anchor w -pady 2 -fill x \
1716	1,0 $inner.colormap_l -anchor w -pady 2 \
1717	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1718	2,0 $inner.linecolor_l -anchor w -pady 2 \
1719	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1720	3,0 $inner.background_l -anchor w -pady 2 \
1721	3,1 $inner.background -anchor w -pady 2 -fill x \
1722	4,0 $inner.numcontours_l -anchor w -pady 2 \
1723	4,1 $inner.numcontours -anchor w -pady 2 \
1724	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1725	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1726	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1727	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1728	9,0 $inner.legend -anchor w -pady 2 \
1729	10,0 $inner.opacity_l -anchor w -pady 2 \
1730	10,1 $inner.opacity -fill x -pady 2 -fill x \
1731
1732	blt::table configure $inner r* c* -resize none
1733	blt::table configure $inner r11 c1 -resize expand
1734	}
1735
1736	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1737
1738	set fg [option get $itk_component(hull) font Font]
1739	#set bfg [option get $itk_component(hull) boldFont Font]
1740
1741	set inner [$itk_component(main) insert end \
1742	-title "Axis Settings" \
1743	-icon [Rappture::icon axis2]]
1744	$inner configure -borderwidth 4
1745
1746	checkbutton $inner.visible \
1747	-text "Show Axes" \
1748	-variable [itcl::scope _settings(axesVisible)] \
1749	-command [itcl::code $this AdjustSetting axesVisible] \
1750	-font "Arial 9"
1751
1752	checkbutton $inner.labels \
1753	-text "Show Axis Labels" \
1754	-variable [itcl::scope _settings(axisLabelsVisible)] \
1755	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1756	-font "Arial 9"
1757
1758	checkbutton $inner.gridx \
1759	-text "Show X Grid" \
1760	-variable [itcl::scope _settings(axisXGrid)] \
1761	-command [itcl::code $this AdjustSetting axisXGrid] \
1762	-font "Arial 9"
1763	checkbutton $inner.gridy \
1764	-text "Show Y Grid" \
1765	-variable [itcl::scope _settings(axisYGrid)] \
1766	-command [itcl::code $this AdjustSetting axisYGrid] \
1767	-font "Arial 9"
1768	checkbutton $inner.gridz \
1769	-text "Show Z Grid" \
1770	-variable [itcl::scope _settings(axisZGrid)] \
1771	-command [itcl::code $this AdjustSetting axisZGrid] \
1772	-font "Arial 9"
1773
1774	label $inner.mode_l -text "Mode" -font "Arial 9"
1775
1776	itk_component add axisMode {
1777	Rappture::Combobox $inner.mode -width 10 -editable no
1778	}
1779	$inner.mode choices insert end \
1780	"static_triad" "static" \
1781	"closest_triad" "closest" \
1782	"furthest_triad" "furthest" \
1783	"outer_edges" "outer"
1784	$itk_component(axisMode) value "static"
1785	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisMode]
1786
1787	blt::table $inner \
1788	0,0 $inner.visible -anchor w -cspan 2 \
1789	1,0 $inner.labels -anchor w -cspan 2 \
1790	2,0 $inner.gridx -anchor w -cspan 2 \
1791	3,0 $inner.gridy -anchor w -cspan 2 \
1792	4,0 $inner.gridz -anchor w -cspan 2 \
1793	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1794	6,0 $inner.mode -fill x -cspan 2
1795
1796	blt::table configure $inner r* c* -resize none
1797	blt::table configure $inner r7 c1 -resize expand
1798	}
1799
1800
1801	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1802	set inner [$itk_component(main) insert end \
1803	-title "Camera Settings" \
1804	-icon [Rappture::icon camera]]
1805	$inner configure -borderwidth 4
1806
1807	label $inner.view_l -text "view" -font "Arial 9"
1808	set f [frame $inner.view]
1809	foreach side { front back left right top bottom } {
1810	button $f.$side -image [Rappture::icon view$side] \
1811	-command [itcl::code $this SetOrientation $side]
1812	Rappture::Tooltip::for $f.$side "Change the view to $side"
1813	pack $f.$side -side left
1814	}
1815
1816	blt::table $inner \
1817	0,0 $inner.view_l -anchor e -pady 2 \
1818	0,1 $inner.view -anchor w -pady 2
1819
1820	set labels { qx qy qz qw xpan ypan zoom }
1821	set row 1
1822	foreach tag $labels {
1823	label $inner.${tag}label -text $tag -font "Arial 9"
1824	entry $inner.${tag} -font "Arial 9" -bg white \
1825	-textvariable [itcl::scope _view($tag)]
1826	bind $inner.${tag} <KeyPress-Return> \
1827	[itcl::code $this camera set ${tag}]
1828	blt::table $inner \
1829	$row,0 $inner.${tag}label -anchor e -pady 2 \
1830	$row,1 $inner.${tag} -anchor w -pady 2
1831	blt::table configure $inner r$row -resize none
1832	incr row
1833	}
1834	checkbutton $inner.ortho \
1835	-text "Orthographic Projection" \
1836	-variable [itcl::scope _view(ortho)] \
1837	-command [itcl::code $this camera set ortho] \
1838	-font "Arial 9"
1839	blt::table $inner \
1840	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1841	blt::table configure $inner r$row -resize none
1842	incr row
1843
1844	blt::table configure $inner c* r* -resize none
1845	blt::table configure $inner c2 -resize expand
1846	blt::table configure $inner r$row -resize expand
1847	}
1848
1849	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1850
1851	set fg [option get $itk_component(hull) font Font]
1852
1853	set inner [$itk_component(main) insert end \
1854	-title "Cutplane Settings" \
1855	-icon [Rappture::icon cutbutton]]
1856
1857	$inner configure -borderwidth 4
1858
1859	checkbutton $inner.visible \
1860	-text "Cutplanes" \
1861	-variable [itcl::scope _settings(cutplaneVisible)] \
1862	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1863	-font "Arial 9"
1864
1865	checkbutton $inner.wireframe \
1866	-text "Wireframe" \
1867	-variable [itcl::scope _settings(cutplaneWireframe)] \
1868	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1869	-font "Arial 9"
1870
1871	checkbutton $inner.lighting \
1872	-text "Enable Lighting" \
1873	-variable [itcl::scope _settings(cutplaneLighting)] \
1874	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1875	-font "Arial 9"
1876
1877	checkbutton $inner.edges \
1878	-text "Edges" \
1879	-variable [itcl::scope _settings(cutplaneEdges)] \
1880	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1881	-font "Arial 9"
1882
1883	checkbutton $inner.preinterp \
1884	-text "Interpolate Scalars" \
1885	-variable [itcl::scope _settings(cutplanePreinterp)] \
1886	-command [itcl::code $this AdjustSetting cutplanePreinterp] \
1887	-font "Arial 9"
1888
1889	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1890	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1891	-variable [itcl::scope _settings(cutplaneOpacity)] \
1892	-width 10 \
1893	-showvalue off \
1894	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1895	$inner.opacity set $_settings(cutplaneOpacity)
1896
1897	# X-value slicer...
1898	itk_component add xbutton {
1899	Rappture::PushButton $inner.xbutton \
1900	-onimage [Rappture::icon x-cutplane-red] \
1901	-offimage [Rappture::icon x-cutplane-red] \
1902	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1903	-variable [itcl::scope _settings(cutplaneXVisible)] \
1904	}
1905	Rappture::Tooltip::for $itk_component(xbutton) \
1906	"Toggle the X-axis cutplane on/off"
1907	$itk_component(xbutton) select
1908	itk_component add xposition {
1909	::scale $inner.xval -from 100 -to 0 \
1910	-width 10 -orient vertical -showvalue yes \
1911	-borderwidth 1 -highlightthickness 0 \
1912	-command [itcl::code $this EventuallySetCutplane x] \
1913	-variable [itcl::scope _settings(cutplaneXPosition)] \
1914	-foreground red2 -font "Arial 9 bold"
1915	} {
1916	usual
1917	ignore -borderwidth -highlightthickness -foreground -font -background
1918	}
1919	# Set the default cutplane value before disabling the scale.
1920	$itk_component(xposition) set 50
1921	$itk_component(xposition) configure -state disabled
1922	Rappture::Tooltip::for $itk_component(xposition) \
1923	"@[itcl::code $this Slice tooltip x]"
1924
1925	# Y-value slicer...
1926	itk_component add ybutton {
1927	Rappture::PushButton $inner.ybutton \
1928	-onimage [Rappture::icon y-cutplane-green] \
1929	-offimage [Rappture::icon y-cutplane-green] \
1930	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1931	-variable [itcl::scope _settings(cutplaneYVisible)] \
1932	}
1933	Rappture::Tooltip::for $itk_component(ybutton) \
1934	"Toggle the Y-axis cutplane on/off"
1935	$itk_component(ybutton) select
1936
1937	itk_component add yposition {
1938	::scale $inner.yval -from 100 -to 0 \
1939	-width 10 -orient vertical -showvalue yes \
1940	-borderwidth 1 -highlightthickness 0 \
1941	-command [itcl::code $this EventuallySetCutplane y] \
1942	-variable [itcl::scope _settings(cutplaneYPosition)] \
1943	-foreground green3 -font "Arial 9 bold"
1944	} {
1945	usual
1946	ignore -borderwidth -highlightthickness -foreground -font
1947	}
1948	Rappture::Tooltip::for $itk_component(yposition) \
1949	"@[itcl::code $this Slice tooltip y]"
1950	# Set the default cutplane value before disabling the scale.
1951	$itk_component(yposition) set 50
1952	$itk_component(yposition) configure -state disabled
1953
1954	# Z-value slicer...
1955	itk_component add zbutton {
1956	Rappture::PushButton $inner.zbutton \
1957	-onimage [Rappture::icon z-cutplane-blue] \
1958	-offimage [Rappture::icon z-cutplane-blue] \
1959	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1960	-variable [itcl::scope _settings(cutplaneZVisible)] \
1961	} {
1962	usual
1963	ignore -foreground
1964	}
1965	Rappture::Tooltip::for $itk_component(zbutton) \
1966	"Toggle the Z-axis cutplane on/off"
1967	$itk_component(zbutton) select
1968
1969	itk_component add zposition {
1970	::scale $inner.zval -from 100 -to 0 \
1971	-width 10 -orient vertical -showvalue yes \
1972	-borderwidth 1 -highlightthickness 0 \
1973	-command [itcl::code $this EventuallySetCutplane z] \
1974	-variable [itcl::scope _settings(cutplaneZPosition)] \
1975	-foreground blue3 -font "Arial 9 bold"
1976	} {
1977	usual
1978	ignore -borderwidth -highlightthickness -foreground -font
1979	}
1980	$itk_component(zposition) set 50
1981	$itk_component(zposition) configure -state disabled
1982	Rappture::Tooltip::for $itk_component(zposition) \
1983	"@[itcl::code $this Slice tooltip z]"
1984
1985	blt::table $inner \
1986	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
1987	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
1988	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
1989	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1990	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
1991	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1992	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1993	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
1994	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
1995	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
1996	6,1 $inner.xval -fill y -rspan 4 \
1997	6,2 $inner.yval -fill y -rspan 4 \
1998	6,3 $inner.zval -fill y -rspan 4 \
1999
2000
2001	blt::table configure $inner r* c* -resize none
2002	blt::table configure $inner r9 c4 -resize expand
2003	}
2004
2005
2006
2007	#
2008	# camera --
2009	#
2010	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2011	switch -- $option {
2012	"show" {
2013	puts [array get _view]
2014	}
2015	"set" {
2016	set who [lindex $args 0]
2017	set x $_view($who)
2018	set code [catch { string is double $x } result]
2019	if { $code != 0 \|\| !$result } {
2020	return
2021	}
2022	switch -- $who {
2023	"ortho" {
2024	if {$_view(ortho)} {
2025	SendCmd "camera mode ortho"
2026	} else {
2027	SendCmd "camera mode persp"
2028	}
2029	}
2030	"xpan" - "ypan" {
2031	PanCamera
2032	}
2033	"qx" - "qy" - "qz" - "qw" {
2034	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2035	$_arcball quaternion $q
2036	EventuallyRotate $q
2037	}
2038	"zoom" {
2039	SendCmd "camera zoom $_view(zoom)"
2040	}
2041	}
2042	}
2043	}
2044	}
2045
2046	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2047	set bytes ""
2048	foreach dataobj [get] {
2049	foreach cname [$dataobj components] {
2050	set tag $dataobj-$cname
2051	set contents [$dataobj vtkdata $cname]
2052	append bytes "$contents\n"
2053	}
2054	}
2055	return [list .vtk $bytes]
2056	}
2057
2058	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2059	if { [image width $_image(download)] > 0 &&
2060	[image height $_image(download)] > 0 } {
2061	set bytes [$_image(download) data -format "jpeg -quality 100"]
2062	set bytes [Rappture::encoding::decode -as b64 $bytes]
2063	return [list .jpg $bytes]
2064	}
2065	return ""
2066	}
2067
2068	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2069	Rappture::Balloon $popup \
2070	-title "[Rappture::filexfer::label downloadWord] as..."
2071	set inner [$popup component inner]
2072	label $inner.summary -text "" -anchor w
2073	radiobutton $inner.vtk_button -text "VTK data file" \
2074	-variable [itcl::scope _downloadPopup(format)] \
2075	-font "Arial 9 " \
2076	-value vtk
2077	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2078	radiobutton $inner.image_button -text "Image File" \
2079	-variable [itcl::scope _downloadPopup(format)] \
2080	-font "Arial 9 " \
2081	-value image
2082	Rappture::Tooltip::for $inner.image_button \
2083	"Save as digital image."
2084
2085	button $inner.ok -text "Save" \
2086	-highlightthickness 0 -pady 2 -padx 3 \
2087	-command $command \
2088	-compound left \
2089	-image [Rappture::icon download]
2090
2091	button $inner.cancel -text "Cancel" \
2092	-highlightthickness 0 -pady 2 -padx 3 \
2093	-command [list $popup deactivate] \
2094	-compound left \
2095	-image [Rappture::icon cancel]
2096
2097	blt::table $inner \
2098	0,0 $inner.summary -cspan 2 \
2099	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2100	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2101	4,1 $inner.cancel -width .9i -fill y \
2102	4,0 $inner.ok -padx 2 -width .9i -fill y
2103	blt::table configure $inner r3 -height 4
2104	blt::table configure $inner r4 -pady 4
2105	raise $inner.image_button
2106	$inner.vtk_button invoke
2107	return $inner
2108	}
2109
2110	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2111	# Parse style string.
2112	set tag $dataobj-$comp
2113	array set style {
2114	-color BCGYR
2115	-edges 0
2116	-edgecolor black
2117	-linewidth 1.0
2118	-opacity 0.6
2119	-wireframe 0
2120	-lighting 1
2121	-outline 0
2122	-levels 10
2123	}
2124	array set style [$dataobj style $comp]
2125	if { $dataobj != $_first } {
2126	set style(-opacity) 1
2127	}
2128	if { $_currentColormap == "" } {
2129	set stylelist [$dataobj style $comp]
2130	if { $stylelist != "" } {
2131	array set style $stylelist
2132	set stylelist [array get style]
2133	SetCurrentColormap $stylelist
2134	}
2135	$itk_component(colormap) value $style(-color)
2136	}
2137	SendCmd "cutplane add $tag"
2138	SendCmd "cutplane edges 0 $tag"
2139	SendCmd "cutplane wireframe 0 $tag"
2140	SendCmd "cutplane lighting 1 $tag"
2141	SendCmd "cutplane linewidth 1 $tag"
2142
2143	foreach axis { x y z } {
2144	SendCmd "cutplane slice $axis 0.5 $tag"
2145	SendCmd "cutplane axis $axis 0 $tag"
2146	}
2147	# This is too complicated. We want to set the colormap, number of
2148	# isolines and opacity for the dataset. They can be the default values,
2149	# the style hints loaded with the dataset, or set by user controls. As
2150	# datasets get loaded, they first use the defaults that are overidden
2151	# by the style hints. If the user changes the global controls, then that
2152	# overrides everything else. I don't know what it means when global
2153	# controls are specified as style hints by each dataset. It complicates
2154	# the code to handle aberrant cases.
2155
2156	if { $_changed(isosurfaceOpacity) } {
2157	set style(-opacity) $_settings(isosurfaceOpacity)
2158	}
2159	if { $_changed(numContours) } {
2160	set style(-levels) $_settings(numContours)
2161	}
2162	if { $_changed(colormap) } {
2163	set style(-color) $_settings(colormap)
2164	}
2165	if { $_currentColormap == "" } {
2166	$itk_component(colormap) value $style(-color)
2167	}
2168	set _currentOpacity $style(-opacity)
2169	if { $_currentNumContours != $style(-levels) } {
2170	set _currentNumContours $style(-levels)
2171	set _settings(numContours) $_currentNumContours
2172	$itk_component(numcontours) value $_currentNumContours
2173	UpdateContourList
2174	DrawLegend
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 a [string toupper $axis]
2306	set oldval $_settings(cutplane${a}Position)
2307	set newval [lindex $args 1]
2308	if {[llength $args] != 2} {
2309	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2310	}
2311	set newpos [expr {0.01*$newval}]
2312	SendCmd "cutplane slice $axis $newpos"
2313	}
2314	"tooltip" {
2315	set axis [lindex $args 0]
2316	set val [$itk_component(${axis}position) get]
2317	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2318	}
2319	default {
2320	error "bad option \"$option\": should be axis, move, or tooltip"
2321	}
2322	}
2323	}
2324
2325	#
2326	# ReceiveLegend --
2327	#
2328	# Invoked automatically whenever the "legend" command comes in from
2329	# the rendering server. Indicates that binary image data with the
2330	# specified <size> will follow.
2331	#
2332	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
2333	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2334	set _title $title
2335	regsub {\(mag\)} $title "" _title
2336	if { [IsConnected] } {
2337	set bytes [ReceiveBytes $size]
2338	if { ![info exists _image(legend)] } {
2339	set _image(legend) [image create photo]
2340	}
2341	$_image(legend) configure -data $bytes
2342	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2343	if { [catch {DrawLegend} errs] != 0 } {
2344	global errorInfo
2345	puts stderr "errs=$errs errorInfo=$errorInfo"
2346	}
2347	}
2348	}
2349
2350	#
2351	# DrawLegend --
2352	#
2353	# Draws the legend in the own canvas on the right side of the plot area.
2354	#
2355	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
2356	set fname $_curFldName
2357	set c $itk_component(view)
2358	set w [winfo width $c]
2359	set h [winfo height $c]
2360	set font "Arial 8"
2361	set lineht [font metrics $font -linespace]
2362
2363	if { [string match "component*" $fname] } {
2364	set title ""
2365	} else {
2366	if { [info exists _fields($fname)] } {
2367	foreach { title units } $_fields($fname) break
2368	if { $units != "" } {
2369	set title [format "%s (%s)" $title $units]
2370	}
2371	} else {
2372	set title $fname
2373	}
2374	}
2375	set x [expr $w - 2]
2376	if { !$_settings(legendVisible) } {
2377	$c delete legend
2378	return
2379	}
2380	if { [$c find withtag "legend"] == "" } {
2381	set y 2
2382	# If there's a legend title, create a text item for the title.
2383	$c create text $x $y \
2384	-anchor ne \
2385	-fill $itk_option(-plotforeground) -tags "title legend" \
2386	-font $font
2387	incr y $lineht
2388	$c create text $x $y \
2389	-anchor ne \
2390	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2391	-font $font
2392	incr y $lineht
2393	$c create image $x $y \
2394	-anchor ne \
2395	-image $_image(legend) -tags "colormap legend"
2396	$c create rectangle $x $y 1 1 \
2397	-fill "" -outline "" -tags "sensor legend"
2398	$c create text $x [expr {$h-2}] \
2399	-anchor se \
2400	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2401	-font $font
2402	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2403	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2404	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2405	}
2406	$c delete isoline
2407	set x2 $x
2408	set iw [image width $_image(legend)]
2409	set ih [image height $_image(legend)]
2410	set x1 [expr $x2 - ($iw*12)/10]
2411	set color $_settings(isolineColor)
2412	# Draw the isolines on the legend.
2413	array unset _isolines
2414	if { $color != "none" && [info exists _limits($_curFldName)] &&
2415	$_settings(numContours) > 0 } {
2416
2417	foreach { vmin vmax } $_limits($_curFldName) break
2418	set range [expr double($vmax - $vmin)]
2419	if { $range <= 0.0 } {
2420	set range 1.0; # Min is greater or equal to max.
2421	}
2422	set tags "isoline legend"
2423	set offset [expr 2 + $lineht]
2424	if { $title != "" } {
2425	incr offset $lineht
2426	}
2427	foreach value $_contourList {
2428	set norm [expr 1.0 - (($value - $vmin) / $range)]
2429	set y1 [expr int(round(($norm * $ih) + $offset))]
2430	for { set off 0 } { $off < 3 } { incr off } {
2431	set _isolines([expr $y1 + $off]) $value
2432	set _isolines([expr $y1 - $off]) $value
2433	}
2434	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2435	}
2436	}
2437
2438	$c bind title <ButtonPress> [itcl::code $this Combo post]
2439	$c bind title <Enter> [itcl::code $this Combo activate]
2440	$c bind title <Leave> [itcl::code $this Combo deactivate]
2441	# Reset the item coordinates according the current size of the plot.
2442	$c itemconfigure title -text $title
2443	if { [info exists _limits($_curFldName)] } {
2444	foreach { vmin vmax } $_limits($_curFldName) break
2445	$c itemconfigure vmin -text [format %g $vmin]
2446	$c itemconfigure vmax -text [format %g $vmax]
2447	}
2448	set y 2
2449	# If there's a legend title, move the title to the correct position
2450	if { $title != "" } {
2451	$c itemconfigure title -text $title
2452	$c coords title $x $y
2453	incr y $lineht
2454	$c raise title
2455	}
2456	$c coords vmax $x $y
2457	incr y $lineht
2458	$c coords colormap $x $y
2459	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2460	$c raise sensor
2461	$c coords vmin $x [expr {$h - 2}]
2462	}
2463
2464	# ----------------------------------------------------------------------
2465	# USAGE: _dropdown post
2466	# USAGE: _dropdown unpost
2467	# USAGE: _dropdown select
2468	#
2469	# Used internally to handle the dropdown list for this combobox. The
2470	# post/unpost options are invoked when the list is posted or unposted
2471	# to manage the relief of the controlling button. The select option
2472	# is invoked whenever there is a selection from the list, to assign
2473	# the value back to the gauge.
2474	# ----------------------------------------------------------------------
2475	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
2476	set c $itk_component(view)
2477	switch -- $option {
2478	post {
2479	foreach { x1 y1 x2 y2 } [$c bbox title] break
2480	set cw [winfo width $itk_component(view)]
2481	set mw [winfo reqwidth $itk_component(fieldmenu)]
2482	set x1 [expr $cw - $mw]
2483	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2484	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2485	tk_popup $itk_component(fieldmenu) $x $y
2486	}
2487	activate {
2488	$c itemconfigure title -fill red
2489	}
2490	deactivate {
2491	$c itemconfigure title -fill $itk_option(-plotforeground)
2492	}
2493	invoke {
2494	$itk_component(field) value $_curFldLabel
2495	AdjustSetting field
2496	}
2497	default {
2498	error "bad option \"$option\": should be post, unpost, select"
2499	}
2500	}
2501	}
2502
2503	#
2504	# SetCurrentColormap --
2505	#
2506	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
2507	# Keep track of the colormaps that we build.
2508	if { ![info exists _colormaps($name)] } {
2509	BuildColormap $name
2510	set _colormaps($name) 1
2511	}
2512	set _currentColormap $name
2513	SendCmd "contour3d colormap $_currentColormap"
2514	}
2515
2516	#
2517	# BuildColormap --
2518	#
2519	# Build the designated colormap on the server.
2520	#
2521	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
2522	set cmap [ColorsToColormap $name]
2523	if { [llength $cmap] == 0 } {
2524	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2525	}
2526	set wmap "0.0 1.0 1.0 1.0"
2527	SendCmd "colormap add $name { $cmap } { $wmap }"
2528	}
2529
2530	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
2531	array set positions {
2532	front "1 0 0 0"
2533	back "0 0 1 0"
2534	left "0.707107 0 -0.707107 0"
2535	right "0.707107 0 0.707107 0"
2536	top "0.707107 -0.707107 0 0"
2537	bottom "0.707107 0.707107 0 0"
2538	}
2539	foreach name { qw qx qy qz } value $positions($side) {
2540	set _view($name) $value
2541	}
2542	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2543	$_arcball quaternion $q
2544	SendCmd "camera orient $q"
2545	SendCmd "camera reset"
2546	set _view(xpan) 0
2547	set _view(ypan) 0
2548	set _view(zoom) 1.0
2549	}
2550
2551	itcl::body Rappture::VtkIsosurfaceViewer::UpdateContourList {} {
2552	if { ![info exists _limits($_curFldName)] } {
2553	return
2554	}
2555	foreach { vmin vmax } $_limits($_curFldName) break
2556	set v [blt::vector create \#auto]
2557	$v seq $vmin $vmax [expr $_currentNumContours+2]
2558	$v delete end 0
2559	set _contourList [$v range 0 end]
2560	blt::vector destroy $v
2561	}

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