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source: trunk/gui/scripts/vtkisosurfaceviewer.tcl @ 3543

Last change on this file since 3543 was 3543, checked in by gah, 12 years ago
fix order of values in legend; tweak placement of isosurfaces
File size: 86.9 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	array set params {
520	-color auto
521	-width 1
522	-linestyle solid
523	-brightness 0
524	-raise 0
525	-description ""
526	-param ""
527	-type ""
528	}
529	array set params $settings
530	set params(-description) ""
531	set params(-param) ""
532	foreach {opt val} $settings {
533	if {![info exists params($opt)]} {
534	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
535	}
536	set params($opt) $val
537	}
538	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
539	# can't handle -autocolors yet
540	set params(-color) black
541	}
542	set pos [lsearch -exact $dataobj $_dlist]
543	if {$pos < 0} {
544	lappend _dlist $dataobj
545	}
546	set _obj2ovride($dataobj-color) $params(-color)
547	set _obj2ovride($dataobj-width) $params(-width)
548	set _obj2ovride($dataobj-raise) $params(-raise)
549	$_dispatcher event -idle !rebuild
550	}
551
552
553	# ----------------------------------------------------------------------
554	# USAGE: delete ?<dataobj1> <dataobj2> ...?
555	#
556	# Clients use this to delete a dataobj from the plot. If no dataobjs
557	# are specified, then all dataobjs are deleted. No data objects are
558	# deleted. They are only removed from the display list.
559	#
560	# ----------------------------------------------------------------------
561	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
562	if { [llength $args] == 0} {
563	set args $_dlist
564	}
565	# Delete all specified dataobjs
566	set changed 0
567	foreach dataobj $args {
568	set pos [lsearch -exact $_dlist $dataobj]
569	if { $pos < 0 } {
570	continue; # Don't know anything about it.
571	}
572	# Remove it from the dataobj list.
573	set _dlist [lreplace $_dlist $pos $pos]
574	SendCmd "dataset visible 0"
575	array unset _obj2ovride $dataobj-*
576	array unset _settings $dataobj-*
577	# Append to the end of the dataobj list.
578	lappend _dlist $dataobj
579	set changed 1
580	}
581	# If anything changed, then rebuild the plot
582	if { $changed } {
583	$_dispatcher event -idle !rebuild
584	}
585	}
586
587	# ----------------------------------------------------------------------
588	# USAGE: get ?-objects?
589	# USAGE: get ?-visible?
590	# USAGE: get ?-image view?
591	#
592	# Clients use this to query the list of objects being plotted, in
593	# order from bottom to top of this result. The optional "-image"
594	# flag can also request the internal images being shown.
595	# ----------------------------------------------------------------------
596	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
597	if {[llength $args] == 0} {
598	set args "-objects"
599	}
600
601	set op [lindex $args 0]
602	switch -- $op {
603	"-objects" {
604	# put the dataobj list in order according to -raise options
605	set dlist {}
606	foreach dataobj $_dlist {
607	if { ![IsValidObject $dataobj] } {
608	continue
609	}
610	if {[info exists _obj2ovride($dataobj-raise)] &&
611	$_obj2ovride($dataobj-raise)} {
612	set dlist [linsert $dlist 0 $dataobj]
613	} else {
614	lappend dlist $dataobj
615	}
616	}
617	return $dlist
618	}
619	"-visible" {
620	set dlist {}
621	foreach dataobj $_dlist {
622	if { ![IsValidObject $dataobj] } {
623	continue
624	}
625	if { ![info exists _obj2ovride($dataobj-raise)] } {
626	# No setting indicates that the object isn't visible.
627	continue
628	}
629	# Otherwise use the -raise parameter to put the object to
630	# the front of the list.
631	if { $_obj2ovride($dataobj-raise) } {
632	set dlist [linsert $dlist 0 $dataobj]
633	} else {
634	lappend dlist $dataobj
635	}
636	}
637	return $dlist
638	}
639	-image {
640	if {[llength $args] != 2} {
641	error "wrong # args: should be \"get -image view\""
642	}
643	switch -- [lindex $args end] {
644	view {
645	return $_image(plot)
646	}
647	default {
648	error "bad image name \"[lindex $args end]\": should be view"
649	}
650	}
651	}
652	default {
653	error "bad option \"$op\": should be -objects or -image"
654	}
655	}
656	}
657
658	# ----------------------------------------------------------------------
659	# USAGE: scale ?<data1> <data2> ...?
660	#
661	# Sets the default limits for the overall plot according to the
662	# limits of the data for all of the given <data> objects. This
663	# accounts for all objects--even those not showing on the screen.
664	# Because of this, the limits are appropriate for all objects as
665	# the user scans through data in the ResultSet viewer.
666	# ----------------------------------------------------------------------
667	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
668	foreach dataobj $args {
669	foreach axis { x y z } {
670	set lim [$dataobj limits $axis]
671	if { ![info exists _limits($axis)] } {
672	set _limits($axis) $lim
673	continue
674	}
675	foreach {min max} $lim break
676	foreach {amin amax} $_limits($axis) break
677	if { $amin > $min } {
678	set amin $min
679	}
680	if { $amax < $max } {
681	set amax $max
682	}
683	set _limits($axis) [list $amin $amax]
684	}
685	foreach { fname lim } [$dataobj fieldlimits] {
686	if { ![info exists _limits($fname)] } {
687	set _limits($fname) $lim
688	continue
689	}
690	foreach {min max} $lim break
691	foreach {fmin fmax} $_limits($fname) break
692	if { $fmin > $min } {
693	set fmin $min
694	}
695	if { $fmax < $max } {
696	set fmax $max
697	}
698	set _limits($fname) [list $fmin $fmax]
699	}
700	}
701	}
702
703	# ----------------------------------------------------------------------
704	# USAGE: download coming
705	# USAGE: download controls <downloadCommand>
706	# USAGE: download now
707	#
708	# Clients use this method to create a downloadable representation
709	# of the plot. Returns a list of the form {ext string}, where
710	# "ext" is the file extension (indicating the type of data) and
711	# "string" is the data itself.
712	# ----------------------------------------------------------------------
713	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
714	switch $option {
715	coming {
716	if {[catch {
717	blt::winop snap $itk_component(plotarea) $_image(download)
718	}]} {
719	$_image(download) configure -width 1 -height 1
720	$_image(download) put #000000
721	}
722	}
723	controls {
724	set popup .vtkviewerdownload
725	if { ![winfo exists .vtkviewerdownload] } {
726	set inner [BuildDownloadPopup $popup [lindex $args 0]]
727	} else {
728	set inner [$popup component inner]
729	}
730	set _downloadPopup(image_controls) $inner.image_frame
731	set num [llength [get]]
732	set num [expr {($num == 1) ? "1 result" : "$num results"}]
733	set word [Rappture::filexfer::label downloadWord]
734	$inner.summary configure -text "$word $num in the following format:"
735	update idletasks ;# Fix initial sizes
736	return $popup
737	}
738	now {
739	set popup .vtkviewerdownload
740	if {[winfo exists .vtkviewerdownload]} {
741	$popup deactivate
742	}
743	switch -- $_downloadPopup(format) {
744	"image" {
745	return [$this GetImage [lindex $args 0]]
746	}
747	"vtk" {
748	return [$this GetVtkData [lindex $args 0]]
749	}
750	}
751	return ""
752	}
753	default {
754	error "bad option \"$option\": should be coming, controls, now"
755	}
756	}
757	}
758
759	# ----------------------------------------------------------------------
760	# USAGE: Connect ?<host:port>,<host:port>...?
761	#
762	# Clients use this method to establish a connection to a new
763	# server, or to reestablish a connection to the previous server.
764	# Any existing connection is automatically closed.
765	# ----------------------------------------------------------------------
766	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
767	set _hosts [GetServerList "vtkvis"]
768	if { "" == $_hosts } {
769	return 0
770	}
771	set result [VisViewer::Connect $_hosts]
772	if { $result } {
773	set w [winfo width $itk_component(view)]
774	set h [winfo height $itk_component(view)]
775	EventuallyResize $w $h
776	}
777	return $result
778	}
779
780	#
781	# isconnected --
782	#
783	# Indicates if we are currently connected to the visualization server.
784	#
785	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
786	return [VisViewer::IsConnected]
787	}
788
789	#
790	# disconnect --
791	#
792	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
793	Disconnect
794	set _reset 1
795	}
796
797	#
798	# Disconnect --
799	#
800	# Clients use this method to disconnect from the current rendering
801	# server.
802	#
803	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
804	VisViewer::Disconnect
805
806	$_dispatcher cancel !rebuild
807	$_dispatcher cancel !resize
808	$_dispatcher cancel !rotate
809	$_dispatcher cancel !xcutplane
810	$_dispatcher cancel !ycutplane
811	$_dispatcher cancel !zcutplane
812	$_dispatcher cancel !legend
813	# disconnected -- no more data sitting on server
814	set _outbuf ""
815	array unset _datasets
816	array unset _data
817	array unset _colormaps
818	array unset _seeds
819	array unset _dataset2style
820	array unset _obj2datasets
821	}
822
823	# ----------------------------------------------------------------------
824	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
825	#
826	# Invoked automatically whenever the "image" command comes in from
827	# the rendering server. Indicates that binary image data with the
828	# specified <size> will follow.
829	# ----------------------------------------------------------------------
830	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
831	array set info {
832	-token "???"
833	-bytes 0
834	-type image
835	}
836	array set info $args
837	set bytes [ReceiveBytes $info(-bytes)]
838	if { $info(-type) == "image" } {
839	if 0 {
840	set f [open "last.ppm" "w"]
841	puts $f $bytes
842	close $f
843	}
844	$_image(plot) configure -data $bytes
845	set time [clock seconds]
846	set date [clock format $time]
847	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
848	if { $_start > 0 } {
849	set finish [clock clicks -milliseconds]
850	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
851	set _start 0
852	}
853	} elseif { $info(type) == "print" } {
854	set tag $this-print-$info(-token)
855	set _hardcopy($tag) $bytes
856	}
857	EventuallyRequestLegend
858	}
859
860	#
861	# ReceiveDataset --
862	#
863	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
864	if { ![isconnected] } {
865	return
866	}
867	set option [lindex $args 0]
868	switch -- $option {
869	"scalar" {
870	set option [lindex $args 1]
871	switch -- $option {
872	"world" {
873	foreach { x y z value tag } [lrange $args 2 end] break
874	}
875	"pixel" {
876	foreach { x y value tag } [lrange $args 2 end] break
877	}
878	}
879	}
880	"vector" {
881	set option [lindex $args 1]
882	switch -- $option {
883	"world" {
884	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
885	}
886	"pixel" {
887	foreach { x y vx vy vz tag } [lrange $args 2 end] break
888	}
889	}
890	}
891	"names" {
892	foreach { name } [lindex $args 1] {
893	#puts stderr "Dataset: $name"
894	}
895	}
896	default {
897	error "unknown dataset option \"$option\" from server"
898	}
899	}
900	}
901
902	# ----------------------------------------------------------------------
903	# USAGE: Rebuild
904	#
905	# Called automatically whenever something changes that affects the
906	# data in the widget. Clears any existing data and rebuilds the
907	# widget to display new data.
908	# ----------------------------------------------------------------------
909	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
910	set w [winfo width $itk_component(view)]
911	set h [winfo height $itk_component(view)]
912	if { $w < 2 \|\| $h < 2 } {
913	$_dispatcher event -idle !rebuild
914	return
915	}
916
917	# Turn on buffering of commands to the server. We don't want to
918	# be preempted by a server disconnect/reconnect (which automatically
919	# generates a new call to Rebuild).
920	StartBufferingCommands
921
922	if { $_reset } {
923	if { $_reportClientInfo } {
924	# Tell the server the name of the tool, the version, and dataset
925	# that we are rendering. Have to do it here because we don't know
926	# what data objects are using the renderer until be get here.
927	global env
928
929	set info {}
930	set user "???"
931	if { [info exists env(USER)] } {
932	set user $env(USER)
933	}
934	set session "???"
935	if { [info exists env(SESSION)] } {
936	set session $env(SESSION)
937	}
938	lappend info "hub" [exec hostname]
939	lappend info "client" "vtkisosurfaceviewer"
940	lappend info "user" $user
941	lappend info "session" $session
942	SendCmd "clientinfo [list $info]"
943	}
944	set _width $w
945	set _height $h
946	$_arcball resize $w $h
947	DoResize
948	#
949	# Reset the camera and other view parameters
950	#
951	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
952	$_arcball quaternion $q
953	if {$_view(ortho)} {
954	SendCmd "camera mode ortho"
955	} else {
956	SendCmd "camera mode persp"
957	}
958	DoRotate
959	PanCamera
960	set _first ""
961	InitSettings axisXGrid axisYGrid axisZGrid axisMode \
962	axesVisible axisLabelsVisible
963	foreach axis { x y z } {
964	SendCmd "axis lformat $axis %g"
965	}
966	StopBufferingCommands
967	SendCmd "imgflush"
968	StartBufferingCommands
969	}
970	set _first ""
971	SendCmd "dataset visible 0"
972	foreach dataobj [get -objects] {
973	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
974	set _first $dataobj
975	}
976	set _obj2datasets($dataobj) ""
977	foreach comp [$dataobj components] {
978	set tag $dataobj-$comp
979	if { ![info exists _datasets($tag)] } {
980	set bytes [$dataobj vtkdata $comp]
981	if 0 {
982	set f [open "/tmp/isosurface.vtk" "w"]
983	puts $f $bytes
984	close $f
985	}
986	set length [string length $bytes]
987	if { $_reportClientInfo } {
988	set info {}
989	lappend info "tool_id" [$dataobj hints toolId]
990	lappend info "tool_name" [$dataobj hints toolName]
991	lappend info "tool_version" [$dataobj hints toolRevision]
992	lappend info "tool_title" [$dataobj hints toolTitle]
993	lappend info "dataset_label" [$dataobj hints label]
994	lappend info "dataset_size" $length
995	lappend info "dataset_tag" $tag
996	SendCmd "clientinfo [list $info]"
997	}
998	append _outbuf "dataset add $tag data follows $length\n"
999	append _outbuf $bytes
1000	set _datasets($tag) 1
1001	SetObjectStyle $dataobj $comp
1002	}
1003	lappend _obj2datasets($dataobj) $tag
1004	if { [info exists _obj2ovride($dataobj-raise)] } {
1005	# Setting dataset visible enables outline (if enabled)
1006	# and contour3d
1007	SendCmd "dataset visible 1 $tag"
1008	}
1009	}
1010	}
1011
1012	if { $_first != "" } {
1013	$itk_component(field) choices delete 0 end
1014	$itk_component(fieldmenu) delete 0 end
1015	array unset _fields
1016	set _curFldName ""
1017	foreach cname [$_first components] {
1018	foreach fname [$_first fieldnames $cname] {
1019	if { [info exists _fields($fname)] } {
1020	continue
1021	}
1022	foreach { label units components } \
1023	[$_first fieldinfo $fname] break
1024	$itk_component(field) choices insert end "$fname" "$label"
1025	$itk_component(fieldmenu) add radiobutton -label "$label" \
1026	-value $label -variable [itcl::scope _curFldLabel] \
1027	-selectcolor red \
1028	-activebackground $itk_option(-plotbackground) \
1029	-activeforeground $itk_option(-plotforeground) \
1030	-font "Arial 8" \
1031	-command [itcl::code $this Combo invoke]
1032	set _fields($fname) [list $label $units $components]
1033	if { $_curFldName == "" } {
1034	set _curFldName $fname
1035	set _curFldLabel $label
1036	}
1037	}
1038	}
1039	$itk_component(field) value $_curFldLabel
1040	}
1041	InitSettings cutplaneVisible
1042	if { $_reset } {
1043	# These are settings that rely on a dataset being loaded.
1044	InitSettings \
1045	isosurfaceLighting \
1046	field \
1047	isosurfaceEdges isosurfaceLighting isosurfaceOpacity \
1048	isosurfaceWireframe isosurfaceOutline \
1049	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1050	cutplaneXVisible cutplaneYVisible cutplaneZVisible \
1051	cutplanePreinterp numContours
1052
1053	Zoom reset
1054	foreach axis { x y z } {
1055	# Another problem fixed by a <view>. We looking into a data
1056	# object for the name of the axes. This should be global to
1057	# the viewer itself.
1058	set label [$_first hints ${axis}label]
1059	if { $label == "" } {
1060	if {$axis == "z"} {
1061	if { [string match "component*" $_curFldName] } {
1062	set label [string toupper $axis]
1063	} else {
1064	set label $_curFldLabel
1065	}
1066	} else {
1067	set label [string toupper $axis]
1068	}
1069	}
1070	# May be a space in the axis label.
1071	SendCmd [list axis name $axis $label]
1072	}
1073	if { [array size _fields] < 2 } {
1074	blt::table forget $itk_component(field) $itk_component(field_l)
1075	}
1076	set _reset 0
1077	}
1078
1079	# Actually write the commands to the server socket. If it fails, we don't
1080	# care. We're finished here.
1081	blt::busy hold $itk_component(hull)
1082	StopBufferingCommands; # Turn off buffering and send commands.
1083	blt::busy release $itk_component(hull)
1084	}
1085
1086	# ----------------------------------------------------------------------
1087	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1088	#
1089	# Returns a list of server IDs for the current datasets being displayed. This
1090	# is normally a single ID, but it might be a list of IDs if the current data
1091	# object has multiple components.
1092	# ----------------------------------------------------------------------
1093	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
1094	set flag [lindex $args 0]
1095	switch -- $flag {
1096	"-all" {
1097	if { [llength $args] > 1 } {
1098	error "CurrentDatasets: can't specify dataobj after \"-all\""
1099	}
1100	set dlist [get -objects]
1101	}
1102	"-visible" {
1103	if { [llength $args] > 1 } {
1104	set dlist {}
1105	set args [lrange $args 1 end]
1106	foreach dataobj $args {
1107	if { [info exists _obj2ovride($dataobj-raise)] } {
1108	lappend dlist $dataobj
1109	}
1110	}
1111	} else {
1112	set dlist [get -visible]
1113	}
1114	}
1115	default {
1116	set dlist $args
1117	}
1118	}
1119	set rlist ""
1120	foreach dataobj $dlist {
1121	foreach comp [$dataobj components] {
1122	set tag $dataobj-$comp
1123	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1124	lappend rlist $tag
1125	}
1126	}
1127	}
1128	return $rlist
1129	}
1130
1131	# ----------------------------------------------------------------------
1132	# USAGE: Zoom in
1133	# USAGE: Zoom out
1134	# USAGE: Zoom reset
1135	#
1136	# Called automatically when the user clicks on one of the zoom
1137	# controls for this widget. Changes the zoom for the current view.
1138	# ----------------------------------------------------------------------
1139	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
1140	switch -- $option {
1141	"in" {
1142	set _view(zoom) [expr {$_view(zoom)*1.25}]
1143	SendCmd "camera zoom $_view(zoom)"
1144	}
1145	"out" {
1146	set _view(zoom) [expr {$_view(zoom)*0.8}]
1147	SendCmd "camera zoom $_view(zoom)"
1148	}
1149	"reset" {
1150	array set _view {
1151	qw 0.853553
1152	qx -0.353553
1153	qy 0.353553
1154	qz 0.146447
1155	zoom 1.0
1156	xpan 0
1157	ypan 0
1158	}
1159	if { $_first != "" } {
1160	set location [$_first hints camera]
1161	if { $location != "" } {
1162	array set _view $location
1163	}
1164	}
1165	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1166	$_arcball quaternion $q
1167	SendCmd "camera reset"
1168	DoRotate
1169	}
1170	}
1171	}
1172
1173	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
1174	set x $_view(xpan)
1175	set y $_view(ypan)
1176	SendCmd "camera pan $x $y"
1177	}
1178
1179
1180	# ----------------------------------------------------------------------
1181	# USAGE: Rotate click <x> <y>
1182	# USAGE: Rotate drag <x> <y>
1183	# USAGE: Rotate release <x> <y>
1184	#
1185	# Called automatically when the user clicks/drags/releases in the
1186	# plot area. Moves the plot according to the user's actions.
1187	# ----------------------------------------------------------------------
1188	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
1189	switch -- $option {
1190	"click" {
1191	$itk_component(view) configure -cursor fleur
1192	set _click(x) $x
1193	set _click(y) $y
1194	}
1195	"drag" {
1196	if {[array size _click] == 0} {
1197	Rotate click $x $y
1198	} else {
1199	set w [winfo width $itk_component(view)]
1200	set h [winfo height $itk_component(view)]
1201	if {$w <= 0 \|\| $h <= 0} {
1202	return
1203	}
1204
1205	if {[catch {
1206	# this fails sometimes for no apparent reason
1207	set dx [expr {double($x-$_click(x))/$w}]
1208	set dy [expr {double($y-$_click(y))/$h}]
1209	}]} {
1210	return
1211	}
1212	if { $dx == 0 && $dy == 0 } {
1213	return
1214	}
1215	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1216	EventuallyRotate $q
1217	set _click(x) $x
1218	set _click(y) $y
1219	}
1220	}
1221	"release" {
1222	Rotate drag $x $y
1223	$itk_component(view) configure -cursor ""
1224	catch {unset _click}
1225	}
1226	default {
1227	error "bad option \"$option\": should be click, drag, release"
1228	}
1229	}
1230	}
1231
1232	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
1233	foreach tag [CurrentDatasets -visible] {
1234	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1235	}
1236	}
1237
1238	# ----------------------------------------------------------------------
1239	# USAGE: $this Pan click x y
1240	# $this Pan drag x y
1241	# $this Pan release x y
1242	#
1243	# Called automatically when the user clicks on one of the zoom
1244	# controls for this widget. Changes the zoom for the current view.
1245	# ----------------------------------------------------------------------
1246	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
1247	switch -- $option {
1248	"set" {
1249	set w [winfo width $itk_component(view)]
1250	set h [winfo height $itk_component(view)]
1251	set x [expr $x / double($w)]
1252	set y [expr $y / double($h)]
1253	set _view(xpan) [expr $_view(xpan) + $x]
1254	set _view(ypan) [expr $_view(ypan) + $y]
1255	PanCamera
1256	return
1257	}
1258	"click" {
1259	set _click(x) $x
1260	set _click(y) $y
1261	$itk_component(view) configure -cursor hand1
1262	}
1263	"drag" {
1264	if { ![info exists _click(x)] } {
1265	set _click(x) $x
1266	}
1267	if { ![info exists _click(y)] } {
1268	set _click(y) $y
1269	}
1270	set w [winfo width $itk_component(view)]
1271	set h [winfo height $itk_component(view)]
1272	set dx [expr ($_click(x) - $x)/double($w)]
1273	set dy [expr ($_click(y) - $y)/double($h)]
1274	set _click(x) $x
1275	set _click(y) $y
1276	set _view(xpan) [expr $_view(xpan) - $dx]
1277	set _view(ypan) [expr $_view(ypan) - $dy]
1278	PanCamera
1279	}
1280	"release" {
1281	Pan drag $x $y
1282	$itk_component(view) configure -cursor ""
1283	}
1284	default {
1285	error "unknown option \"$option\": should set, click, drag, or release"
1286	}
1287	}
1288	}
1289
1290	# ----------------------------------------------------------------------
1291	# USAGE: InitSettings <what> ?<value>?
1292	#
1293	# Used internally to update rendering settings whenever parameters
1294	# change in the popup settings panel. Sends the new settings off
1295	# to the back end.
1296	# ----------------------------------------------------------------------
1297	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
1298	foreach spec $args {
1299	if { [info exists _settings($_first-$spec)] } {
1300	# Reset global setting with dataobj specific setting
1301	set _settings($spec) $_settings($_first-$spec)
1302	}
1303	AdjustSetting $spec
1304	}
1305	}
1306
1307	#
1308	# AdjustSetting --
1309	#
1310	# Changes/updates a specific setting in the widget. There are
1311	# usually user-setable option. Commands are sent to the render
1312	# server.
1313	#
1314	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
1315	if { ![isconnected] } {
1316	return
1317	}
1318	switch -- $what {
1319	"background" {
1320	set bgcolor [$itk_component(background) value]
1321	array set fgcolors {
1322	"black" "white"
1323	"white" "black"
1324	"grey" "black"
1325	}
1326	configure -plotbackground $bgcolor \
1327	-plotforeground $fgcolors($bgcolor)
1328	$itk_component(view) delete "legend"
1329	DrawLegend
1330	}
1331	"axesVisible" {
1332	set bool $_settings(axesVisible)
1333	SendCmd "axis visible all $bool"
1334	}
1335	"axisLabelsVisible" {
1336	set bool $_settings(axisLabelsVisible)
1337	SendCmd "axis labels all $bool"
1338	}
1339	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1340	set axis [string tolower [string range $what 4 4]]
1341	set bool $_settings($what)
1342	SendCmd "axis grid $axis $bool"
1343	}
1344	"axisMode" {
1345	set mode [$itk_component(axisMode) value]
1346	set mode [$itk_component(axisMode) translate $mode]
1347	set _settings($what) $mode
1348	SendCmd "axis flymode $mode"
1349	}
1350	"cutplaneEdges" {
1351	set bool $_settings($what)
1352	SendCmd "cutplane edges $bool"
1353	}
1354	"cutplaneVisible" {
1355	set bool $_settings($what)
1356	SendCmd "cutplane visible $bool"
1357	}
1358	"cutplaneWireframe" {
1359	set bool $_settings($what)
1360	SendCmd "cutplane wireframe $bool"
1361	}
1362	"cutplaneLighting" {
1363	set bool $_settings($what)
1364	SendCmd "cutplane lighting $bool"
1365	}
1366	"cutplaneOpacity" {
1367	set val $_settings($what)
1368	set sval [expr { 0.01 * double($val) }]
1369	SendCmd "cutplane opacity $sval"
1370	}
1371	"cutplanePreinterp" {
1372	set bool $_settings($what)
1373	SendCmd "cutplane preinterp $bool"
1374	}
1375	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1376	set axis [string tolower [string range $what 8 8]]
1377	set bool $_settings($what)
1378	if { $bool } {
1379	$itk_component(${axis}position) configure -state normal \
1380	-troughcolor white
1381	} else {
1382	$itk_component(${axis}position) configure -state disabled \
1383	-troughcolor grey82
1384	}
1385	SendCmd "cutplane axis $axis $bool"
1386	}
1387	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1388	set axis [string tolower [string range $what 8 8]]
1389	set pos [expr $_settings($what) * 0.01]
1390	SendCmd "cutplane slice ${axis} ${pos}"
1391	set _cutplanePending 0
1392	}
1393	"colormap" {
1394	set _changed(colormap) 1
1395	StartBufferingCommands
1396	set color [$itk_component(colormap) value]
1397	set _settings(colormap) $color
1398	if { $color == "none" } {
1399	if { $_settings(colormapVisible) } {
1400	SendCmd "contour3d surface 0"
1401	set _settings(colormapVisible) 0
1402	}
1403	} else {
1404	if { !$_settings(colormapVisible) } {
1405	SendCmd "contour3d surface 1"
1406	set _settings(colormapVisible) 1
1407	}
1408	SetCurrentColormap $color
1409	}
1410	StopBufferingCommands
1411	EventuallyRequestLegend
1412	}
1413	"numContours" {
1414	set _settings(numContours) [$itk_component(numcontours) value]
1415	set _currentNumContours $_settings(numContours)
1416	UpdateContourList
1417	set _changed(numContours) 1
1418	SendCmd "contour3d contourlist [list $_contourList]"
1419	DrawLegend
1420	}
1421	"isosurfaceWireframe" {
1422	set bool $_settings(isosurfaceWireframe)
1423	SendCmd "contour3d wireframe $bool"
1424	}
1425	"isosurfaceVisible" {
1426	set bool $_settings(isosurfaceVisible)
1427	SendCmd "contour3d visible $bool"
1428	if { $bool } {
1429	Rappture::Tooltip::for $itk_component(contour) \
1430	"Hide the isosurface"
1431	} else {
1432	Rappture::Tooltip::for $itk_component(contour) \
1433	"Show the isosurface"
1434	}
1435	DrawLegend
1436	}
1437	"isosurfaceLighting" {
1438	set bool $_settings(isosurfaceLighting)
1439	SendCmd "contour3d lighting $bool"
1440	}
1441	"isosurfaceEdges" {
1442	set bool $_settings(isosurfaceEdges)
1443	SendCmd "contour3d edges $bool"
1444	}
1445	"isosurfaceOutline" {
1446	set bool $_settings(isosurfaceOutline)
1447	SendCmd "dataset outline $bool"
1448	}
1449	"isolineColor" {
1450	set color [$itk_component(isolineColor) value]
1451	set _settings(isolineColor) $color
1452	DrawLegend
1453	}
1454	"isosurfaceOpacity" {
1455	set val $_settings(isosurfaceOpacity)
1456	set sval [expr { 0.01 * double($val) }]
1457	SendCmd "contour3d opacity $sval"
1458	}
1459	"field" {
1460	set label [$itk_component(field) value]
1461	set fname [$itk_component(field) translate $label]
1462	set _settings(field) $fname
1463	if { [info exists _fields($fname)] } {
1464	foreach { label units components } $_fields($fname) break
1465	if { $components > 1 } {
1466	set _colorMode vmag
1467	} else {
1468	set _colorMode scalar
1469	}
1470	set _curFldName $fname
1471	set _curFldLabel $label
1472	} else {
1473	puts stderr "unknown field \"$fname\""
1474	return
1475	}
1476	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1477	SendCmd "contour3d colormode $_colorMode $_curFldName"
1478	SendCmd "cutplane colormode $_colorMode $_curFldName"
1479	SendCmd "camera reset"
1480	UpdateContourList
1481	DrawLegend
1482	}
1483	"legendVisible" {
1484	if { !$_settings(legendVisible) } {
1485	$itk_component(view) delete legend
1486	}
1487	DrawLegend
1488	}
1489	default {
1490	error "don't know how to fix $what"
1491	}
1492	}
1493	}
1494
1495
1496	#
1497	# RequestLegend --
1498	#
1499	# Request a new legend from the server. The size of the legend
1500	# is determined from the height of the canvas.
1501	#
1502	# This should be called when
1503	# 1. A new current colormap is set.
1504	# 2. Window is resized.
1505	# 3. The limits of the data have changed. (Just need a redraw).
1506	# 4. Number of isolines have changed. (Just need a redraw).
1507	# 5. Legend becomes visible (Just need a redraw).
1508	#
1509	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
1510	if { ![info exists _fields($_curFldName)] } {
1511	return
1512	}
1513	set fname $_curFldName
1514	set _legendPending 0
1515	set font "Arial 8"
1516	set lineht [font metrics $font -linespace]
1517	set c $itk_component(view)
1518	set w 12
1519	set h [expr {$_height - 2 * ($lineht + 2)}]
1520	if { $h < 1} {
1521	return
1522	}
1523	if { [string match "component*" $fname] } {
1524	set title ""
1525	} else {
1526	if { [info exists _fields($fname)] } {
1527	foreach { title units } $_fields($fname) break
1528	if { $units != "" } {
1529	set title [format "%s (%s)" $title $units]
1530	}
1531	} else {
1532	set title $fname
1533	}
1534	}
1535	# If there's a title too, substract one more line
1536	if { $title != "" } {
1537	incr h -$lineht
1538	}
1539	# Set the legend on the first heightmap dataset.
1540	if { $_currentColormap != "" } {
1541	set cmap $_currentColormap
1542	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1543	}
1544	}
1545
1546	# ----------------------------------------------------------------------
1547	# CONFIGURATION OPTION: -plotbackground
1548	# ----------------------------------------------------------------------
1549	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
1550	if { [isconnected] } {
1551	set rgb [Color2RGB $itk_option(-plotbackground)]
1552	SendCmd "screen bgcolor $rgb"
1553	}
1554	}
1555
1556	# ----------------------------------------------------------------------
1557	# CONFIGURATION OPTION: -plotforeground
1558	# ----------------------------------------------------------------------
1559	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
1560	if { [isconnected] } {
1561	set rgb [Color2RGB $itk_option(-plotforeground)]
1562	SendCmd "axis color all $rgb"
1563	SendCmd "dataset color $rgb"
1564	SendCmd "cutplane ccolor $rgb"
1565	}
1566	}
1567
1568	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
1569	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1570	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1571	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1572	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1573	return [array get limits]
1574	}
1575
1576	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
1577
1578	set fg [option get $itk_component(hull) font Font]
1579	#set bfg [option get $itk_component(hull) boldFont Font]
1580
1581	set inner [$itk_component(main) insert end \
1582	-title "Isosurface Settings" \
1583	-icon [Rappture::icon volume-on]]
1584	$inner configure -borderwidth 4
1585
1586	checkbutton $inner.contour \
1587	-text "Isosurfaces" \
1588	-variable [itcl::scope _settings(isosurfaceVisible)] \
1589	-command [itcl::code $this AdjustSetting isosurfaceVisible] \
1590	-font "Arial 9"
1591
1592	checkbutton $inner.wireframe \
1593	-text "Wireframe" \
1594	-variable [itcl::scope _settings(isosurfaceWireframe)] \
1595	-command [itcl::code $this AdjustSetting isosurfaceWireframe] \
1596	-font "Arial 9"
1597
1598	checkbutton $inner.lighting \
1599	-text "Enable Lighting" \
1600	-variable [itcl::scope _settings(isosurfaceLighting)] \
1601	-command [itcl::code $this AdjustSetting isosurfaceLighting] \
1602	-font "Arial 9"
1603
1604	checkbutton $inner.edges \
1605	-text "Edges" \
1606	-variable [itcl::scope _settings(isosurfaceEdges)] \
1607	-command [itcl::code $this AdjustSetting isosurfaceEdges] \
1608	-font "Arial 9"
1609
1610	checkbutton $inner.outline \
1611	-text "Outline" \
1612	-variable [itcl::scope _settings(isosurfaceOutline)] \
1613	-command [itcl::code $this AdjustSetting isosurfaceOutline] \
1614	-font "Arial 9"
1615
1616	checkbutton $inner.legend \
1617	-text "Legend" \
1618	-variable [itcl::scope _settings(legendVisible)] \
1619	-command [itcl::code $this AdjustSetting legendVisible] \
1620	-font "Arial 9"
1621
1622	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1623	itk_component add isolineColor {
1624	Rappture::Combobox $inner.linecolor -width 10 -editable no
1625	}
1626	$inner.linecolor choices insert end \
1627	"black" "black" \
1628	"blue" "blue" \
1629	"cyan" "cyan" \
1630	"green" "green" \
1631	"grey" "grey" \
1632	"magenta" "magenta" \
1633	"orange" "orange" \
1634	"red" "red" \
1635	"white" "white" \
1636	"none" "none"
1637
1638	$itk_component(isolineColor) value "white"
1639	bind $inner.linecolor <<Value>> \
1640	[itcl::code $this AdjustSetting isolineColor]
1641
1642	label $inner.background_l -text "Background" -font "Arial 9"
1643	itk_component add background {
1644	Rappture::Combobox $inner.background -width 10 -editable no
1645	}
1646	$inner.background choices insert end \
1647	"black" "black" \
1648	"white" "white" \
1649	"grey" "grey"
1650
1651	$itk_component(background) value $_settings(background)
1652	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1653
1654	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1655	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1656	-variable [itcl::scope _settings(isosurfaceOpacity)] \
1657	-width 10 \
1658	-showvalue off \
1659	-command [itcl::code $this AdjustSetting isosurfaceOpacity]
1660
1661	label $inner.scale_l -text "Scale" -font "Arial 9"
1662	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1663	-variable [itcl::scope _settings(contour-scale)] \
1664	-width 10 \
1665	-showvalue off \
1666	-command [itcl::code $this AdjustSetting contour-scale]
1667
1668	itk_component add field_l {
1669	label $inner.field_l -text "Field" -font "Arial 9"
1670	} {
1671	ignore -font
1672	}
1673	itk_component add field {
1674	Rappture::Combobox $inner.field -width 10 -editable no
1675	}
1676	bind $inner.field <<Value>> \
1677	[itcl::code $this AdjustSetting field]
1678
1679	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1680	itk_component add colormap {
1681	Rappture::Combobox $inner.colormap -width 10 -editable no
1682	}
1683	$inner.colormap choices insert end \
1684	"BCGYR" "BCGYR" \
1685	"BGYOR" "BGYOR" \
1686	"blue" "blue" \
1687	"blue-to-brown" "blue-to-brown" \
1688	"blue-to-orange" "blue-to-orange" \
1689	"blue-to-grey" "blue-to-grey" \
1690	"green-to-magenta" "green-to-magenta" \
1691	"greyscale" "greyscale" \
1692	"nanohub" "nanohub" \
1693	"rainbow" "rainbow" \
1694	"spectral" "spectral" \
1695	"ROYGB" "ROYGB" \
1696	"RYGCB" "RYGCB" \
1697	"brown-to-blue" "brown-to-blue" \
1698	"grey-to-blue" "grey-to-blue" \
1699	"orange-to-blue" "orange-to-blue"
1700
1701	$itk_component(colormap) value "BCGYR"
1702	bind $inner.colormap <<Value>> \
1703	[itcl::code $this AdjustSetting colormap]
1704
1705	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
1706	itk_component add numcontours {
1707	Rappture::Spinint $inner.numcontours \
1708	-min 1 -max 50 -font "arial 9"
1709	}
1710	$itk_component(numcontours) value $_settings(numContours)
1711	bind $itk_component(numcontours) <<Value>> \
1712	[itcl::code $this AdjustSetting numContours]
1713
1714	blt::table $inner \
1715	0,0 $inner.field_l -anchor w -pady 2 \
1716	0,1 $inner.field -anchor w -pady 2 -fill x \
1717	1,0 $inner.colormap_l -anchor w -pady 2 \
1718	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1719	2,0 $inner.linecolor_l -anchor w -pady 2 \
1720	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1721	3,0 $inner.background_l -anchor w -pady 2 \
1722	3,1 $inner.background -anchor w -pady 2 -fill x \
1723	4,0 $inner.numcontours_l -anchor w -pady 2 \
1724	4,1 $inner.numcontours -anchor w -pady 2 \
1725	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1726	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1727	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1728	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1729	9,0 $inner.legend -anchor w -pady 2 \
1730	10,0 $inner.opacity_l -anchor w -pady 2 \
1731	10,1 $inner.opacity -fill x -pady 2 -fill x \
1732
1733	blt::table configure $inner r* c* -resize none
1734	blt::table configure $inner r11 c1 -resize expand
1735	}
1736
1737	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
1738
1739	set fg [option get $itk_component(hull) font Font]
1740	#set bfg [option get $itk_component(hull) boldFont Font]
1741
1742	set inner [$itk_component(main) insert end \
1743	-title "Axis Settings" \
1744	-icon [Rappture::icon axis2]]
1745	$inner configure -borderwidth 4
1746
1747	checkbutton $inner.visible \
1748	-text "Show Axes" \
1749	-variable [itcl::scope _settings(axesVisible)] \
1750	-command [itcl::code $this AdjustSetting axesVisible] \
1751	-font "Arial 9"
1752
1753	checkbutton $inner.labels \
1754	-text "Show Axis Labels" \
1755	-variable [itcl::scope _settings(axisLabelsVisible)] \
1756	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1757	-font "Arial 9"
1758
1759	checkbutton $inner.gridx \
1760	-text "Show X Grid" \
1761	-variable [itcl::scope _settings(axisXGrid)] \
1762	-command [itcl::code $this AdjustSetting axisXGrid] \
1763	-font "Arial 9"
1764	checkbutton $inner.gridy \
1765	-text "Show Y Grid" \
1766	-variable [itcl::scope _settings(axisYGrid)] \
1767	-command [itcl::code $this AdjustSetting axisYGrid] \
1768	-font "Arial 9"
1769	checkbutton $inner.gridz \
1770	-text "Show Z Grid" \
1771	-variable [itcl::scope _settings(axisZGrid)] \
1772	-command [itcl::code $this AdjustSetting axisZGrid] \
1773	-font "Arial 9"
1774
1775	label $inner.mode_l -text "Mode" -font "Arial 9"
1776
1777	itk_component add axisMode {
1778	Rappture::Combobox $inner.mode -width 10 -editable no
1779	}
1780	$inner.mode choices insert end \
1781	"static_triad" "static" \
1782	"closest_triad" "closest" \
1783	"furthest_triad" "furthest" \
1784	"outer_edges" "outer"
1785	$itk_component(axisMode) value "static"
1786	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisMode]
1787
1788	blt::table $inner \
1789	0,0 $inner.visible -anchor w -cspan 2 \
1790	1,0 $inner.labels -anchor w -cspan 2 \
1791	2,0 $inner.gridx -anchor w -cspan 2 \
1792	3,0 $inner.gridy -anchor w -cspan 2 \
1793	4,0 $inner.gridz -anchor w -cspan 2 \
1794	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1795	6,0 $inner.mode -fill x -cspan 2
1796
1797	blt::table configure $inner r* c* -resize none
1798	blt::table configure $inner r7 c1 -resize expand
1799	}
1800
1801
1802	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
1803	set inner [$itk_component(main) insert end \
1804	-title "Camera Settings" \
1805	-icon [Rappture::icon camera]]
1806	$inner configure -borderwidth 4
1807
1808	label $inner.view_l -text "view" -font "Arial 9"
1809	set f [frame $inner.view]
1810	foreach side { front back left right top bottom } {
1811	button $f.$side -image [Rappture::icon view$side] \
1812	-command [itcl::code $this SetOrientation $side]
1813	Rappture::Tooltip::for $f.$side "Change the view to $side"
1814	pack $f.$side -side left
1815	}
1816
1817	blt::table $inner \
1818	0,0 $inner.view_l -anchor e -pady 2 \
1819	0,1 $inner.view -anchor w -pady 2
1820
1821	set labels { qx qy qz qw xpan ypan zoom }
1822	set row 1
1823	foreach tag $labels {
1824	label $inner.${tag}label -text $tag -font "Arial 9"
1825	entry $inner.${tag} -font "Arial 9" -bg white \
1826	-textvariable [itcl::scope _view($tag)]
1827	bind $inner.${tag} <KeyPress-Return> \
1828	[itcl::code $this camera set ${tag}]
1829	blt::table $inner \
1830	$row,0 $inner.${tag}label -anchor e -pady 2 \
1831	$row,1 $inner.${tag} -anchor w -pady 2
1832	blt::table configure $inner r$row -resize none
1833	incr row
1834	}
1835	checkbutton $inner.ortho \
1836	-text "Orthographic Projection" \
1837	-variable [itcl::scope _view(ortho)] \
1838	-command [itcl::code $this camera set ortho] \
1839	-font "Arial 9"
1840	blt::table $inner \
1841	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1842	blt::table configure $inner r$row -resize none
1843	incr row
1844
1845	blt::table configure $inner c* r* -resize none
1846	blt::table configure $inner c2 -resize expand
1847	blt::table configure $inner r$row -resize expand
1848	}
1849
1850	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
1851
1852	set fg [option get $itk_component(hull) font Font]
1853
1854	set inner [$itk_component(main) insert end \
1855	-title "Cutplane Settings" \
1856	-icon [Rappture::icon cutbutton]]
1857
1858	$inner configure -borderwidth 4
1859
1860	checkbutton $inner.visible \
1861	-text "Cutplanes" \
1862	-variable [itcl::scope _settings(cutplaneVisible)] \
1863	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1864	-font "Arial 9"
1865
1866	checkbutton $inner.wireframe \
1867	-text "Wireframe" \
1868	-variable [itcl::scope _settings(cutplaneWireframe)] \
1869	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1870	-font "Arial 9"
1871
1872	checkbutton $inner.lighting \
1873	-text "Enable Lighting" \
1874	-variable [itcl::scope _settings(cutplaneLighting)] \
1875	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1876	-font "Arial 9"
1877
1878	checkbutton $inner.edges \
1879	-text "Edges" \
1880	-variable [itcl::scope _settings(cutplaneEdges)] \
1881	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1882	-font "Arial 9"
1883
1884	checkbutton $inner.preinterp \
1885	-text "Interpolate Scalars" \
1886	-variable [itcl::scope _settings(cutplanePreinterp)] \
1887	-command [itcl::code $this AdjustSetting cutplanePreinterp] \
1888	-font "Arial 9"
1889
1890	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1891	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1892	-variable [itcl::scope _settings(cutplaneOpacity)] \
1893	-width 10 \
1894	-showvalue off \
1895	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1896	$inner.opacity set $_settings(cutplaneOpacity)
1897
1898	# X-value slicer...
1899	itk_component add xbutton {
1900	Rappture::PushButton $inner.xbutton \
1901	-onimage [Rappture::icon x-cutplane-red] \
1902	-offimage [Rappture::icon x-cutplane-red] \
1903	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1904	-variable [itcl::scope _settings(cutplaneXVisible)] \
1905	}
1906	Rappture::Tooltip::for $itk_component(xbutton) \
1907	"Toggle the X-axis cutplane on/off"
1908	$itk_component(xbutton) select
1909	itk_component add xposition {
1910	::scale $inner.xval -from 100 -to 0 \
1911	-width 10 -orient vertical -showvalue yes \
1912	-borderwidth 1 -highlightthickness 0 \
1913	-command [itcl::code $this EventuallySetCutplane x] \
1914	-variable [itcl::scope _settings(cutplaneXPosition)] \
1915	-foreground red2 -font "Arial 9 bold"
1916	} {
1917	usual
1918	ignore -borderwidth -highlightthickness -foreground -font -background
1919	}
1920	# Set the default cutplane value before disabling the scale.
1921	$itk_component(xposition) set 50
1922	$itk_component(xposition) configure -state disabled
1923	Rappture::Tooltip::for $itk_component(xposition) \
1924	"@[itcl::code $this Slice tooltip x]"
1925
1926	# Y-value slicer...
1927	itk_component add ybutton {
1928	Rappture::PushButton $inner.ybutton \
1929	-onimage [Rappture::icon y-cutplane-green] \
1930	-offimage [Rappture::icon y-cutplane-green] \
1931	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1932	-variable [itcl::scope _settings(cutplaneYVisible)] \
1933	}
1934	Rappture::Tooltip::for $itk_component(ybutton) \
1935	"Toggle the Y-axis cutplane on/off"
1936	$itk_component(ybutton) select
1937
1938	itk_component add yposition {
1939	::scale $inner.yval -from 100 -to 0 \
1940	-width 10 -orient vertical -showvalue yes \
1941	-borderwidth 1 -highlightthickness 0 \
1942	-command [itcl::code $this EventuallySetCutplane y] \
1943	-variable [itcl::scope _settings(cutplaneYPosition)] \
1944	-foreground green3 -font "Arial 9 bold"
1945	} {
1946	usual
1947	ignore -borderwidth -highlightthickness -foreground -font
1948	}
1949	Rappture::Tooltip::for $itk_component(yposition) \
1950	"@[itcl::code $this Slice tooltip y]"
1951	# Set the default cutplane value before disabling the scale.
1952	$itk_component(yposition) set 50
1953	$itk_component(yposition) configure -state disabled
1954
1955	# Z-value slicer...
1956	itk_component add zbutton {
1957	Rappture::PushButton $inner.zbutton \
1958	-onimage [Rappture::icon z-cutplane-blue] \
1959	-offimage [Rappture::icon z-cutplane-blue] \
1960	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1961	-variable [itcl::scope _settings(cutplaneZVisible)] \
1962	} {
1963	usual
1964	ignore -foreground
1965	}
1966	Rappture::Tooltip::for $itk_component(zbutton) \
1967	"Toggle the Z-axis cutplane on/off"
1968	$itk_component(zbutton) select
1969
1970	itk_component add zposition {
1971	::scale $inner.zval -from 100 -to 0 \
1972	-width 10 -orient vertical -showvalue yes \
1973	-borderwidth 1 -highlightthickness 0 \
1974	-command [itcl::code $this EventuallySetCutplane z] \
1975	-variable [itcl::scope _settings(cutplaneZPosition)] \
1976	-foreground blue3 -font "Arial 9 bold"
1977	} {
1978	usual
1979	ignore -borderwidth -highlightthickness -foreground -font
1980	}
1981	$itk_component(zposition) set 50
1982	$itk_component(zposition) configure -state disabled
1983	Rappture::Tooltip::for $itk_component(zposition) \
1984	"@[itcl::code $this Slice tooltip z]"
1985
1986	blt::table $inner \
1987	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
1988	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
1989	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
1990	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1991	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
1992	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1993	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1994	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
1995	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
1996	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
1997	6,1 $inner.xval -fill y -rspan 4 \
1998	6,2 $inner.yval -fill y -rspan 4 \
1999	6,3 $inner.zval -fill y -rspan 4 \
2000
2001
2002	blt::table configure $inner r* c* -resize none
2003	blt::table configure $inner r9 c4 -resize expand
2004	}
2005
2006
2007
2008	#
2009	# camera --
2010	#
2011	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
2012	switch -- $option {
2013	"show" {
2014	puts [array get _view]
2015	}
2016	"set" {
2017	set who [lindex $args 0]
2018	set x $_view($who)
2019	set code [catch { string is double $x } result]
2020	if { $code != 0 \|\| !$result } {
2021	return
2022	}
2023	switch -- $who {
2024	"ortho" {
2025	if {$_view(ortho)} {
2026	SendCmd "camera mode ortho"
2027	} else {
2028	SendCmd "camera mode persp"
2029	}
2030	}
2031	"xpan" - "ypan" {
2032	PanCamera
2033	}
2034	"qx" - "qy" - "qz" - "qw" {
2035	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2036	$_arcball quaternion $q
2037	EventuallyRotate $q
2038	}
2039	"zoom" {
2040	SendCmd "camera zoom $_view(zoom)"
2041	}
2042	}
2043	}
2044	}
2045	}
2046
2047	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
2048	set bytes ""
2049	foreach dataobj [get] {
2050	foreach cname [$dataobj components] {
2051	set tag $dataobj-$cname
2052	set contents [$dataobj vtkdata $cname]
2053	append bytes "$contents\n\n"
2054	}
2055	}
2056	return [list .vtk $bytes]
2057	}
2058
2059	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
2060	if { [image width $_image(download)] > 0 &&
2061	[image height $_image(download)] > 0 } {
2062	set bytes [$_image(download) data -format "jpeg -quality 100"]
2063	set bytes [Rappture::encoding::decode -as b64 $bytes]
2064	return [list .jpg $bytes]
2065	}
2066	return ""
2067	}
2068
2069	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
2070	Rappture::Balloon $popup \
2071	-title "[Rappture::filexfer::label downloadWord] as..."
2072	set inner [$popup component inner]
2073	label $inner.summary -text "" -anchor w
2074	radiobutton $inner.vtk_button -text "VTK data file" \
2075	-variable [itcl::scope _downloadPopup(format)] \
2076	-font "Arial 9 " \
2077	-value vtk
2078	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2079	radiobutton $inner.image_button -text "Image File" \
2080	-variable [itcl::scope _downloadPopup(format)] \
2081	-font "Arial 9 " \
2082	-value image
2083	Rappture::Tooltip::for $inner.image_button \
2084	"Save as digital image."
2085
2086	button $inner.ok -text "Save" \
2087	-highlightthickness 0 -pady 2 -padx 3 \
2088	-command $command \
2089	-compound left \
2090	-image [Rappture::icon download]
2091
2092	button $inner.cancel -text "Cancel" \
2093	-highlightthickness 0 -pady 2 -padx 3 \
2094	-command [list $popup deactivate] \
2095	-compound left \
2096	-image [Rappture::icon cancel]
2097
2098	blt::table $inner \
2099	0,0 $inner.summary -cspan 2 \
2100	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2101	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2102	4,1 $inner.cancel -width .9i -fill y \
2103	4,0 $inner.ok -padx 2 -width .9i -fill y
2104	blt::table configure $inner r3 -height 4
2105	blt::table configure $inner r4 -pady 4
2106	raise $inner.image_button
2107	$inner.vtk_button invoke
2108	return $inner
2109	}
2110
2111	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
2112	# Parse style string.
2113	set tag $dataobj-$comp
2114	array set style {
2115	-color BCGYR
2116	-edges 0
2117	-edgecolor black
2118	-linewidth 1.0
2119	-opacity 0.6
2120	-wireframe 0
2121	-lighting 1
2122	-outline 0
2123	-levels 10
2124	}
2125	array set style [$dataobj style $comp]
2126	if { $dataobj != $_first } {
2127	set style(-opacity) 1
2128	}
2129	if { $_currentColormap == "" } {
2130	set stylelist [$dataobj style $comp]
2131	if { $stylelist != "" } {
2132	array set style $stylelist
2133	set stylelist [array get style]
2134	SetCurrentColormap $stylelist
2135	}
2136	$itk_component(colormap) value $style(-color)
2137	}
2138	SendCmd "cutplane add $tag"
2139	SendCmd "cutplane edges 0 $tag"
2140	SendCmd "cutplane wireframe 0 $tag"
2141	SendCmd "cutplane lighting 1 $tag"
2142	SendCmd "cutplane linewidth 1 $tag"
2143
2144	foreach axis { x y z } {
2145	SendCmd "cutplane slice $axis 0.5 $tag"
2146	SendCmd "cutplane axis $axis 0 $tag"
2147	}
2148	# This is too complicated. We want to set the colormap, number of
2149	# isolines and opacity for the dataset. They can be the default values,
2150	# the style hints loaded with the dataset, or set by user controls. As
2151	# datasets get loaded, they first use the defaults that are overidden
2152	# by the style hints. If the user changes the global controls, then that
2153	# overrides everything else. I don't know what it means when global
2154	# controls are specified as style hints by each dataset. It complicates
2155	# the code to handle aberrant cases.
2156
2157	if { $_changed(isosurfaceOpacity) } {
2158	set style(-opacity) $_settings(isosurfaceOpacity)
2159	}
2160	if { $_changed(numContours) } {
2161	set style(-levels) $_settings(numContours)
2162	}
2163	if { $_changed(colormap) } {
2164	set style(-color) $_settings(colormap)
2165	}
2166	if { $_currentColormap == "" } {
2167	$itk_component(colormap) value $style(-color)
2168	}
2169	set _currentOpacity $style(-opacity)
2170	if { $_currentNumContours != $style(-levels) } {
2171	set _currentNumContours $style(-levels)
2172	set _settings(numContours) $_currentNumContours
2173	$itk_component(numcontours) value $_currentNumContours
2174	UpdateContourList
2175	DrawLegend
2176	}
2177	SendCmd [list contour3d add contourlist $_contourList $tag]
2178	SendCmd "contour3d edges $style(-edges) $tag"
2179	SendCmd "dataset outline $style(-outline) $tag"
2180	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
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	if { $title != "" } {
2384	$c create text $x $y \
2385	-anchor ne \
2386	-fill $itk_option(-plotforeground) -tags "title legend" \
2387	-font $font
2388	incr y $lineht
2389	}
2390	$c create text $x $y \
2391	-anchor ne \
2392	-fill $itk_option(-plotforeground) -tags "zmax legend" \
2393	-font $font
2394	incr y $lineht
2395	$c create image $x $y \
2396	-anchor ne \
2397	-image $_image(legend) -tags "colormap legend"
2398	$c create rectangle $x $y 1 1 \
2399	-fill "" -outline "" -tags "sensor legend"
2400	$c create text $x [expr {$h-2}] \
2401	-anchor se \
2402	-fill $itk_option(-plotforeground) -tags "zmin legend" \
2403	-font $font
2404	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2405	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2406	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2407	}
2408	$c delete isoline
2409	set x2 $x
2410	set iw [image width $_image(legend)]
2411	set ih [image height $_image(legend)]
2412	set x1 [expr $x2 - ($iw*12)/10]
2413	set color $_settings(isolineColor)
2414	# Draw the isolines on the legend.
2415	array unset _isolines
2416	if { $color != "none" && [info exists _limits($_curFldName)] &&
2417	$_settings(numContours) > 0 } {
2418
2419	foreach { vmin vmax } $_limits($_curFldName) break
2420	set range [expr double($vmax - $vmin)]
2421	if { $range <= 0.0 } {
2422	set range 1.0; # Min is greater or equal to max.
2423	}
2424	set tags "isoline legend"
2425	set offset [expr 2 + $lineht]
2426	if { $title != "" } {
2427	incr offset $lineht
2428	}
2429	foreach value $_contourList {
2430	set norm [expr 1.0 - (($value - $vmin) / $range)]
2431	set y1 [expr int(round(($norm * $ih) + $offset))]
2432	for { set off 0 } { $off < 3 } { incr off } {
2433	set _isolines([expr $y1 + $off]) $value
2434	set _isolines([expr $y1 - $off]) $value
2435	}
2436	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2437	}
2438	}
2439
2440	$c bind title <ButtonPress> [itcl::code $this Combo post]
2441	$c bind title <Enter> [itcl::code $this Combo activate]
2442	$c bind title <Leave> [itcl::code $this Combo deactivate]
2443	# Reset the item coordinates according the current size of the plot.
2444	$c itemconfigure title -text $title
2445	if { [info exists _limits($_curFldName)] } {
2446	foreach { vmin vmax } $_limits($_curFldName) break
2447	$c itemconfigure zmin -text [format %g $vmin]
2448	$c itemconfigure zmax -text [format %g $vmax]
2449	}
2450	set y 2
2451	# If there's a legend title, move the title to the correct position
2452	if { $title != "" } {
2453	$c coords title $x $y
2454	incr y $lineht
2455	}
2456	$c coords zmax $x $y
2457	incr y $lineht
2458	$c coords colormap $x $y
2459	set ix [image width $_image(legend)]
2460	set ih [image height $_image(legend)]
2461	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2462	$c raise sensor
2463	$c coords zmin $x [expr {$h - 2}]
2464	}
2465
2466	# ----------------------------------------------------------------------
2467	# USAGE: _dropdown post
2468	# USAGE: _dropdown unpost
2469	# USAGE: _dropdown select
2470	#
2471	# Used internally to handle the dropdown list for this combobox. The
2472	# post/unpost options are invoked when the list is posted or unposted
2473	# to manage the relief of the controlling button. The select option
2474	# is invoked whenever there is a selection from the list, to assign
2475	# the value back to the gauge.
2476	# ----------------------------------------------------------------------
2477	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
2478	set c $itk_component(view)
2479	switch -- $option {
2480	post {
2481	foreach { x1 y1 x2 y2 } [$c bbox title] break
2482	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
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 $q"
2545	SendCmd "camera reset"
2546	set _view(xpan) 0
2547	set _view(ypan) 0
2548	set _view(zoom) 1.0
2549	}
2550
2551
2552	itcl::body Rappture::VtkIsosurfaceViewer::UpdateContourList {} {
2553	if { ![info exists _limits($_curFldName)] } {
2554	return
2555	}
2556	foreach { vmin vmax } $_limits($_curFldName) break
2557	set v [blt::vector create \#auto]
2558	$v seq $vmin $vmax [expr $_currentNumContours+1]
2559	set slice [expr ($vmax - $vmin) / double($_currentNumContours)]
2560	$v expr {$v + ($slice * 0.5)}
2561	$v delete end
2562	set _contourList [$v range 0 end]
2563	blt::vector destroy $v
2564	}

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