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source: trunk/gui/scripts/vtkmeshviewer.tcl @ 4735

Last change on this file since 4735 was 4697, checked in by ldelgass, 10 years ago
Fix opacity slider
File size: 54.4 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkmeshviewer - Vtk mesh viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkMeshViewer.width 4i widgetDefault
19	option add VtkMeshViewercursor crosshair widgetDefault
20	option add *VtkMeshViewer.height 4i widgetDefault
21	option add *VtkMeshViewer.foreground black widgetDefault
22	option add *VtkMeshViewer.controlBackground gray widgetDefault
23	option add *VtkMeshViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkMeshViewer.plotBackground black widgetDefault
25	option add *VtkMeshViewer.plotForeground white widgetDefault
26	option add *VtkMeshViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkMeshViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkMeshViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkMeshViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method limits { dataobj }
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method Connect {}
66	protected method CurrentDatasets {args}
67	protected method Disconnect {}
68	protected method DoResize {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method Rotate {option x y}
78	protected method Zoom {option}
79
80	# The following methods are only used by this class.
81	private method BuildAxisTab {}
82	private method BuildCameraTab {}
83	private method BuildDownloadPopup { widget command }
84	private method BuildPolydataTab {}
85	private method EventuallyResize { w h }
86	private method EventuallyRotate { q }
87	private method EventuallySetPolydataOpacity {}
88	private method GetImage { args }
89	private method GetVtkData { args }
90	private method IsValidObject { dataobj }
91	private method PanCamera {}
92	private method SetObjectStyle { dataobj }
93	private method SetOrientation { side }
94	private method SetPolydataOpacity {}
95
96	private variable _arcball ""
97	private variable _dlist ""; # list of data objects
98	private variable _obj2datasets
99	private variable _obj2ovride; # maps dataobj => style override
100	private variable _datasets; # contains all the dataobj-component
101	# datasets in the server
102	private variable _dataset2style; # maps dataobj-component to transfunc
103	private variable _style2datasets; # maps tf back to list of
104	# dataobj-components using the tf.
105	private variable _click; # info used for rotate operations
106	private variable _limits; # autoscale min/max for all axes
107	private variable _view; # view params for 3D view
108	private variable _settings
109	private variable _widget
110	private variable _style; # Array of current component styles.
111	private variable _initialStyle; # Array of initial component styles.
112	private variable _reset 1; # Indicates that server was reset and
113	# needs to be reinitialized.
114
115	private variable _first ""; # This is the topmost dataset.
116	private variable _start 0
117	private variable _title ""
118
119	common _downloadPopup; # download options from popup
120	private common _hardcopy
121	private variable _width 0
122	private variable _height 0
123	private variable _resizePending 0
124	private variable _rotatePending 0
125	private variable _polydataOpacityPending 0
126	private variable _rotateDelay 150
127	private variable _opacityDelay 150
128	}
129
130	itk::usual VtkMeshViewer {
131	keep -background -foreground -cursor -font
132	keep -plotbackground -plotforeground
133	}
134
135	# ----------------------------------------------------------------------
136	# CONSTRUCTOR
137	# ----------------------------------------------------------------------
138	itcl::body Rappture::VtkMeshViewer::constructor {hostlist args} {
139	package require vtk
140	set _serverType "vtkvis"
141
142	# Rebuild event
143	$_dispatcher register !rebuild
144	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
145
146	# Resize event
147	$_dispatcher register !resize
148	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
149
150	# Rotate event
151	$_dispatcher register !rotate
152	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
153
154	# Polydata opacity event
155	$_dispatcher register !polydataOpacity
156	$_dispatcher dispatch $this !polydataOpacity \
157	"[itcl::code $this SetPolydataOpacity]; list"
158	#
159	# Populate parser with commands handle incoming requests
160	#
161	$_parser alias image [itcl::code $this ReceiveImage]
162	$_parser alias dataset [itcl::code $this ReceiveDataset]
163
164	# Initialize the view to some default parameters.
165	array set _view {
166	qw 0.853553
167	qx -0.353553
168	qy 0.353553
169	qz 0.146447
170	zoom 1.0
171	xpan 0
172	ypan 0
173	ortho 0
174	}
175	set _arcball [blt::arcball create 100 100]
176	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
177	$_arcball quaternion $q
178
179	set _limits(zmin) 0.0
180	set _limits(zmax) 1.0
181
182	array set _settings {
183	-axesvisible 1
184	-axislabels 1
185	-axisminorticks 1
186	-outline 0
187	-polydataedges 0
188	-polydatalighting 1
189	-polydataopacity 1.0
190	-polydatavisible 1
191	-polydatawireframe 0
192	-xgrid 0
193	-ygrid 0
194	-zgrid 0
195	}
196	array set _widget {
197	-polydataopacity 100
198	}
199	itk_component add view {
200	canvas $itk_component(plotarea).view \
201	-highlightthickness 0 -borderwidth 0
202	} {
203	usual
204	ignore -highlightthickness -borderwidth -background
205	}
206
207	itk_component add fieldmenu {
208	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
209	-tearoff no
210	} {
211	usual
212	ignore -background -foreground -relief -tearoff
213	}
214
215	set c $itk_component(view)
216	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
217	bind $c <4> [itcl::code $this Zoom in 0.25]
218	bind $c <5> [itcl::code $this Zoom out 0.25]
219	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
220	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
221	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
222	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
223	bind $c <Enter> "focus %W"
224	bind $c <Control-F1> [itcl::code $this ToggleConsole]
225
226	# Fix the scrollregion in case we go off screen
227	$c configure -scrollregion [$c bbox all]
228
229	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
230	set _map(cwidth) -1
231	set _map(cheight) -1
232	set _map(zoom) 1.0
233	set _map(original) ""
234
235	set f [$itk_component(main) component controls]
236	itk_component add reset {
237	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
238	-highlightthickness 0 \
239	-image [Rappture::icon reset-view] \
240	-command [itcl::code $this Zoom reset]
241	} {
242	usual
243	ignore -highlightthickness
244	}
245	pack $itk_component(reset) -side top -padx 2 -pady 2
246	Rappture::Tooltip::for $itk_component(reset) \
247	"Reset the view to the default zoom level"
248
249	itk_component add zoomin {
250	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
251	-highlightthickness 0 \
252	-image [Rappture::icon zoom-in] \
253	-command [itcl::code $this Zoom in]
254	} {
255	usual
256	ignore -highlightthickness
257	}
258	pack $itk_component(zoomin) -side top -padx 2 -pady 2
259	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
260
261	itk_component add zoomout {
262	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
263	-highlightthickness 0 \
264	-image [Rappture::icon zoom-out] \
265	-command [itcl::code $this Zoom out]
266	} {
267	usual
268	ignore -highlightthickness
269	}
270	pack $itk_component(zoomout) -side top -padx 2 -pady 2
271	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
272
273	BuildPolydataTab
274	BuildAxisTab
275	BuildCameraTab
276
277	# Hack around the Tk panewindow. The problem is that the requested
278	# size of the 3d view isn't set until an image is retrieved from
279	# the server. So the panewindow uses the tiny size.
280	set w 10000
281	pack forget $itk_component(view)
282	blt::table $itk_component(plotarea) \
283	0,0 $itk_component(view) -fill both -reqwidth $w
284	blt::table configure $itk_component(plotarea) c1 -resize none
285
286	# Bindings for rotation via mouse
287	bind $itk_component(view) <ButtonPress-1> \
288	[itcl::code $this Rotate click %x %y]
289	bind $itk_component(view) <B1-Motion> \
290	[itcl::code $this Rotate drag %x %y]
291	bind $itk_component(view) <ButtonRelease-1> \
292	[itcl::code $this Rotate release %x %y]
293	bind $itk_component(view) <Configure> \
294	[itcl::code $this EventuallyResize %w %h]
295
296	# Bindings for panning via mouse
297	bind $itk_component(view) <ButtonPress-2> \
298	[itcl::code $this Pan click %x %y]
299	bind $itk_component(view) <B2-Motion> \
300	[itcl::code $this Pan drag %x %y]
301	bind $itk_component(view) <ButtonRelease-2> \
302	[itcl::code $this Pan release %x %y]
303
304	#bind $itk_component(view) <ButtonRelease-3> \
305	# [itcl::code $this Pick %x %y]
306
307	# Bindings for panning via keyboard
308	bind $itk_component(view) <KeyPress-Left> \
309	[itcl::code $this Pan set -10 0]
310	bind $itk_component(view) <KeyPress-Right> \
311	[itcl::code $this Pan set 10 0]
312	bind $itk_component(view) <KeyPress-Up> \
313	[itcl::code $this Pan set 0 -10]
314	bind $itk_component(view) <KeyPress-Down> \
315	[itcl::code $this Pan set 0 10]
316	bind $itk_component(view) <Shift-KeyPress-Left> \
317	[itcl::code $this Pan set -2 0]
318	bind $itk_component(view) <Shift-KeyPress-Right> \
319	[itcl::code $this Pan set 2 0]
320	bind $itk_component(view) <Shift-KeyPress-Up> \
321	[itcl::code $this Pan set 0 -2]
322	bind $itk_component(view) <Shift-KeyPress-Down> \
323	[itcl::code $this Pan set 0 2]
324
325	# Bindings for zoom via keyboard
326	bind $itk_component(view) <KeyPress-Prior> \
327	[itcl::code $this Zoom out]
328	bind $itk_component(view) <KeyPress-Next> \
329	[itcl::code $this Zoom in]
330
331	bind $itk_component(view) <Enter> "focus $itk_component(view)"
332
333	if {[string equal "x11" [tk windowingsystem]]} {
334	# Bindings for zoom via mouse
335	bind $itk_component(view) <4> [itcl::code $this Zoom out]
336	bind $itk_component(view) <5> [itcl::code $this Zoom in]
337	}
338
339	set _image(download) [image create photo]
340
341	eval itk_initialize $args
342	Connect
343	}
344
345	# ----------------------------------------------------------------------
346	# DESTRUCTOR
347	# ----------------------------------------------------------------------
348	itcl::body Rappture::VtkMeshViewer::destructor {} {
349	Disconnect
350	$_dispatcher cancel !rebuild
351	$_dispatcher cancel !resize
352	$_dispatcher cancel !rotate
353	image delete $_image(plot)
354	image delete $_image(download)
355	catch { blt::arcball destroy $_arcball }
356	}
357
358	itcl::body Rappture::VtkMeshViewer::DoResize {} {
359	if { $_width < 2 } {
360	set _width 500
361	}
362	if { $_height < 2 } {
363	set _height 500
364	}
365	set _start [clock clicks -milliseconds]
366	SendCmd "screen size $_width $_height"
367
368	set _resizePending 0
369	}
370
371	itcl::body Rappture::VtkMeshViewer::DoRotate {} {
372	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
373	SendCmd "camera orient $q"
374	set _rotatePending 0
375	}
376
377	itcl::body Rappture::VtkMeshViewer::EventuallyResize { w h } {
378	set _width $w
379	set _height $h
380	$_arcball resize $w $h
381	if { !$_resizePending } {
382	set _resizePending 1
383	$_dispatcher event -after 200 !resize
384	}
385	}
386
387	itcl::body Rappture::VtkMeshViewer::EventuallyRotate { q } {
388	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
389	if { !$_rotatePending } {
390	set _rotatePending 1
391	$_dispatcher event -after $_rotateDelay !rotate
392	}
393	}
394
395	itcl::body Rappture::VtkMeshViewer::SetPolydataOpacity {} {
396	set _polydataOpacityPending 0
397	set val $_settings(-polydataopacity)
398	SendCmd "polydata opacity $val"
399	}
400
401	itcl::body Rappture::VtkMeshViewer::EventuallySetPolydataOpacity {} {
402	if { !$_polydataOpacityPending } {
403	set _polydataOpacityPending 1
404	$_dispatcher event -after $_opacityDelay !polydataOpacity
405	}
406	}
407
408	# ----------------------------------------------------------------------
409	# USAGE: add <dataobj> ?<settings>?
410	#
411	# Clients use this to add a data object to the plot. The optional
412	# <settings> are used to configure the plot. Allowed settings are
413	# -color, -brightness, -width, -linestyle, and -raise.
414	# ----------------------------------------------------------------------
415	itcl::body Rappture::VtkMeshViewer::add {dataobj {settings ""}} {
416	array set params {
417	-color auto
418	-width 1
419	-linestyle solid
420	-brightness 0
421	-raise 0
422	-description ""
423	-param ""
424	-type ""
425	}
426	array set params $settings
427	set params(-description) ""
428	set params(-param) ""
429	array set params $settings
430
431	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
432	# can't handle -autocolors yet
433	set params(-color) black
434	}
435	set pos [lsearch -exact $_dlist $dataobj]
436	if {$pos < 0} {
437	lappend _dlist $dataobj
438	}
439	set _obj2ovride($dataobj-color) $params(-color)
440	set _obj2ovride($dataobj-width) $params(-width)
441	set _obj2ovride($dataobj-raise) $params(-raise)
442	$_dispatcher event -idle !rebuild
443	}
444
445	# ----------------------------------------------------------------------
446	# USAGE: delete ?<dataobj1> <dataobj2> ...?
447	#
448	# Clients use this to delete a dataobj from the plot. If no dataobjs
449	# are specified, then all dataobjs are deleted. No data objects are
450	# deleted. They are only removed from the display list.
451	#
452	# ----------------------------------------------------------------------
453	itcl::body Rappture::VtkMeshViewer::delete {args} {
454	if { [llength $args] == 0} {
455	set args $_dlist
456	}
457	# Delete all specified dataobjs
458	set changed 0
459	foreach dataobj $args {
460	set pos [lsearch -exact $_dlist $dataobj]
461	if { $pos < 0 } {
462	continue; # Don't know anything about it.
463	}
464	# Remove it from the dataobj list.
465	set _dlist [lreplace $_dlist $pos $pos]
466	array unset _obj2ovride $dataobj-*
467	set changed 1
468	}
469	# If anything changed, then rebuild the plot
470	if { $changed } {
471	$_dispatcher event -idle !rebuild
472	}
473	}
474
475	# ----------------------------------------------------------------------
476	# USAGE: get ?-objects?
477	# USAGE: get ?-visible?
478	# USAGE: get ?-image view?
479	#
480	# Clients use this to query the list of objects being plotted, in
481	# order from bottom to top of this result. The optional "-image"
482	# flag can also request the internal images being shown.
483	# ----------------------------------------------------------------------
484	itcl::body Rappture::VtkMeshViewer::get {args} {
485	if {[llength $args] == 0} {
486	set args "-objects"
487	}
488
489	set op [lindex $args 0]
490	switch -- $op {
491	"-objects" {
492	# put the dataobj list in order according to -raise options
493	set dlist {}
494	foreach dataobj $_dlist {
495	if { ![IsValidObject $dataobj] } {
496	continue
497	}
498	if {[info exists _obj2ovride($dataobj-raise)] &&
499	$_obj2ovride($dataobj-raise)} {
500	set dlist [linsert $dlist 0 $dataobj]
501	} else {
502	lappend dlist $dataobj
503	}
504	}
505	return $dlist
506	}
507	"-visible" {
508	set dlist {}
509	foreach dataobj $_dlist {
510	if { ![IsValidObject $dataobj] } {
511	continue
512	}
513	if { ![info exists _obj2ovride($dataobj-raise)] } {
514	# No setting indicates that the object isn't visible.
515	continue
516	}
517	# Otherwise use the -raise parameter to put the object to
518	# the front of the list.
519	if { $_obj2ovride($dataobj-raise) } {
520	set dlist [linsert $dlist 0 $dataobj]
521	} else {
522	lappend dlist $dataobj
523	}
524	}
525	return $dlist
526	}
527	-image {
528	if {[llength $args] != 2} {
529	error "wrong # args: should be \"get -image view\""
530	}
531	switch -- [lindex $args end] {
532	view {
533	return $_image(plot)
534	}
535	default {
536	error "bad image name \"[lindex $args end]\": should be view"
537	}
538	}
539	}
540	default {
541	error "bad option \"$op\": should be -objects or -image"
542	}
543	}
544	}
545
546	# ----------------------------------------------------------------------
547	# USAGE: scale ?<data1> <data2> ...?
548	#
549	# Sets the default limits for the overall plot according to the
550	# limits of the data for all of the given <data> objects. This
551	# accounts for all objects--even those not showing on the screen.
552	# Because of this, the limits are appropriate for all objects as
553	# the user scans through data in the ResultSet viewer.
554	# ----------------------------------------------------------------------
555	itcl::body Rappture::VtkMeshViewer::scale {args} {
556	foreach dataobj $args {
557	array set bounds [limits $dataobj]
558	if {![info exists _limits(xmin)] \|\| $_limits(xmin) > $bounds(xmin)} {
559	set _limits(xmin) $bounds(xmin)
560	}
561	if {![info exists _limits(xmax)] \|\| $_limits(xmax) < $bounds(xmax)} {
562	set _limits(xmax) $bounds(xmax)
563	}
564
565	if {![info exists _limits(ymin)] \|\| $_limits(ymin) > $bounds(ymin)} {
566	set _limits(ymin) $bounds(ymin)
567	}
568	if {![info exists _limits(ymax)] \|\| $_limits(ymax) < $bounds(ymax)} {
569	set _limits(ymax) $bounds(ymax)
570	}
571
572	if {![info exists _limits(zmin)] \|\| $_limits(zmin) > $bounds(zmin)} {
573	set _limits(zmin) $bounds(zmin)
574	}
575	if {![info exists _limits(zmax)] \|\| $_limits(zmax) < $bounds(zmax)} {
576	set _limits(zmax) $bounds(zmax)
577	}
578	}
579	}
580
581	# ----------------------------------------------------------------------
582	# USAGE: download coming
583	# USAGE: download controls <downloadCommand>
584	# USAGE: download now
585	#
586	# Clients use this method to create a downloadable representation
587	# of the plot. Returns a list of the form {ext string}, where
588	# "ext" is the file extension (indicating the type of data) and
589	# "string" is the data itself.
590	# ----------------------------------------------------------------------
591	itcl::body Rappture::VtkMeshViewer::download {option args} {
592	switch $option {
593	coming {
594	if {[catch {
595	blt::winop snap $itk_component(plotarea) $_image(download)
596	}]} {
597	$_image(download) configure -width 1 -height 1
598	$_image(download) put #000000
599	}
600	}
601	controls {
602	set popup .vtkviewerdownload
603	if { ![winfo exists .vtkviewerdownload] } {
604	set inner [BuildDownloadPopup $popup [lindex $args 0]]
605	} else {
606	set inner [$popup component inner]
607	}
608	set _downloadPopup(image_controls) $inner.image_frame
609	set num [llength [get]]
610	set num [expr {($num == 1) ? "1 result" : "$num results"}]
611	set word [Rappture::filexfer::label downloadWord]
612	$inner.summary configure -text "$word $num in the following format:"
613	update idletasks ;# Fix initial sizes
614	return $popup
615	}
616	now {
617	set popup .vtkviewerdownload
618	if {[winfo exists .vtkviewerdownload]} {
619	$popup deactivate
620	}
621	switch -- $_downloadPopup(format) {
622	"image" {
623	return [$this GetImage [lindex $args 0]]
624	}
625	"vtk" {
626	return [$this GetVtkData [lindex $args 0]]
627	}
628	}
629	return ""
630	}
631	default {
632	error "bad option \"$option\": should be coming, controls, now"
633	}
634	}
635	}
636
637	# ----------------------------------------------------------------------
638	# USAGE: Connect ?<host:port>,<host:port>...?
639	#
640	# Clients use this method to establish a connection to a new
641	# server, or to reestablish a connection to the previous server.
642	# Any existing connection is automatically closed.
643	# ----------------------------------------------------------------------
644	itcl::body Rappture::VtkMeshViewer::Connect {} {
645	global readyForNextFrame
646	set readyForNextFrame 1
647	set _hosts [GetServerList "vtkvis"]
648	if { "" == $_hosts } {
649	return 0
650	}
651	set result [VisViewer::Connect $_hosts]
652	if { $result } {
653	if { $_reportClientInfo } {
654	# Tell the server the viewer, hub, user and session.
655	# Do this immediately on connect before buffering any commands
656	global env
657
658	set info {}
659	set user "???"
660	if { [info exists env(USER)] } {
661	set user $env(USER)
662	}
663	set session "???"
664	if { [info exists env(SESSION)] } {
665	set session $env(SESSION)
666	}
667	lappend info "version" "$Rappture::version"
668	lappend info "build" "$Rappture::build"
669	lappend info "svnurl" "$Rappture::svnurl"
670	lappend info "installdir" "$Rappture::installdir"
671	lappend info "hub" [exec hostname]
672	lappend info "client" "vtkmeshviewer"
673	lappend info "user" $user
674	lappend info "session" $session
675	SendCmd "clientinfo [list $info]"
676	}
677
678	set w [winfo width $itk_component(view)]
679	set h [winfo height $itk_component(view)]
680	EventuallyResize $w $h
681	}
682	return $result
683	}
684
685	#
686	# isconnected --
687	#
688	# Indicates if we are currently connected to the visualization server.
689	#
690	itcl::body Rappture::VtkMeshViewer::isconnected {} {
691	return [VisViewer::IsConnected]
692	}
693
694	#
695	# disconnect --
696	#
697	itcl::body Rappture::VtkMeshViewer::disconnect {} {
698	Disconnect
699	set _reset 1
700	}
701
702	#
703	# Disconnect --
704	#
705	# Clients use this method to disconnect from the current rendering
706	# server.
707	#
708	itcl::body Rappture::VtkMeshViewer::Disconnect {} {
709	VisViewer::Disconnect
710
711	# disconnected -- no more data sitting on server
712	array unset _datasets
713	array unset _data
714	global readyForNextFrame
715	set readyForNextFrame 1
716	}
717
718	# ----------------------------------------------------------------------
719	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
720	#
721	# Invoked automatically whenever the "image" command comes in from
722	# the rendering server. Indicates that binary image data with the
723	# specified <size> will follow.
724	# ----------------------------------------------------------------------
725	itcl::body Rappture::VtkMeshViewer::ReceiveImage { args } {
726	global readyForNextFrame
727	set readyForNextFrame 1
728	array set info {
729	-token "???"
730	-bytes 0
731	-type image
732	}
733	array set info $args
734	set bytes [ReceiveBytes $info(-bytes)]
735	if { $info(-type) == "image" } {
736	if 0 {
737	set f [open "last.ppm" "w"]
738	fconfigure $f -encoding binary
739	puts -nonewline $f $bytes
740	close $f
741	}
742	$_image(plot) configure -data $bytes
743	set time [clock seconds]
744	set date [clock format $time]
745	if { $_start > 0 } {
746	set finish [clock clicks -milliseconds]
747	set _start 0
748	}
749	} elseif { $info(type) == "print" } {
750	set tag $this-print-$info(-token)
751	set _hardcopy($tag) $bytes
752	}
753	}
754
755	#
756	# ReceiveDataset --
757	#
758	itcl::body Rappture::VtkMeshViewer::ReceiveDataset { args } {
759	if { ![isconnected] } {
760	return
761	}
762	set option [lindex $args 0]
763	switch -- $option {
764	"scalar" {
765	set option [lindex $args 1]
766	switch -- $option {
767	"world" {
768	foreach { x y z value tag } [lrange $args 2 end] break
769	}
770	"pixel" {
771	foreach { x y value tag } [lrange $args 2 end] break
772	}
773	}
774	}
775	"vector" {
776	set option [lindex $args 1]
777	switch -- $option {
778	"world" {
779	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
780	}
781	"pixel" {
782	foreach { x y vx vy vz tag } [lrange $args 2 end] break
783	}
784	}
785	}
786	"names" {
787	foreach { name } [lindex $args 1] {
788	#puts stderr "Dataset: $name"
789	}
790	}
791	default {
792	error "unknown dataset option \"$option\" from server"
793	}
794	}
795	}
796
797	# ----------------------------------------------------------------------
798	# USAGE: Rebuild
799	#
800	# Called automatically whenever something changes that affects the
801	# data in the widget. Clears any existing data and rebuilds the
802	# widget to display new data.
803	# ----------------------------------------------------------------------
804	itcl::body Rappture::VtkMeshViewer::Rebuild {} {
805
806	set w [winfo width $itk_component(view)]
807	set h [winfo height $itk_component(view)]
808	if { $w < 2 \|\| $h < 2 } {
809	$_dispatcher event -idle !rebuild
810	return
811	}
812
813	# Turn on buffering of commands to the server. We don't want to
814	# be preempted by a server disconnect/reconnect (which automatically
815	# generates a new call to Rebuild).
816	StartBufferingCommands
817
818	if { $_reset } {
819	set _width $w
820	set _height $h
821	$_arcball resize $w $h
822	DoResize
823	InitSettings -xgrid -ygrid -zgrid -axismode \
824	-axesvisible -axislabels -axisminorticks
825	StopBufferingCommands
826	SendCmd "imgflush"
827	StartBufferingCommands
828	}
829
830	set _limits(zmin) ""
831	set _limits(zmax) ""
832	set _first ""
833	SendCmd "dataset visible 0"
834	set count 0
835	foreach dataobj [get -objects] {
836	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
837	set _first $dataobj
838	}
839	set _obj2datasets($dataobj) ""
840	set tag $dataobj
841	if { ![info exists _datasets($tag)] } {
842	set bytes [$dataobj vtkdata -full]
843	if { $bytes == "" } {
844	continue
845	}
846	set length [string length $bytes]
847	if { $_reportClientInfo } {
848	set info {}
849	lappend info "tool_id" [$dataobj hints toolId]
850	lappend info "tool_name" [$dataobj hints toolName]
851	lappend info "tool_version" [$dataobj hints toolRevision]
852	lappend info "tool_title" [$dataobj hints toolTitle]
853	lappend info "dataset_label" [$dataobj hints label]
854	lappend info "dataset_size" $length
855	lappend info "dataset_tag" $tag
856	SendCmd [list "clientinfo" $info]
857	}
858	SendCmd "dataset add $tag data follows $length"
859	append _outbuf $bytes
860	set _datasets($tag) 1
861	SetObjectStyle $dataobj
862	}
863	lappend _obj2datasets($dataobj) $tag
864	if { [info exists _obj2ovride($dataobj-raise)] } {
865	SendCmd "dataset visible 1 $tag"
866	EventuallySetPolydataOpacity
867	}
868	}
869	if {"" != $_first} {
870	set location [$_first hints camera]
871	if { $location != "" } {
872	array set view $location
873	}
874
875	foreach axis { x y z } {
876	set label [$_first label ${axis}]
877	if { $label != "" } {
878	SendCmd [list axis name $axis $label]
879	}
880	set units [$_first units ${axis}]
881	if { $units != "" } {
882	SendCmd [list axis units $axis $units]
883	}
884	}
885	}
886	InitSettings -outline
887	if { $_reset } {
888	# These are settings that rely on a dataset being loaded.
889	InitSettings -polydataedges -polydatalighting -polydataopacity \
890	-polydatavisible -polydatawireframe
891
892	#SendCmd "axis lformat all %g"
893
894	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
895	$_arcball quaternion $q
896	SendCmd "camera reset"
897	if { $_view(ortho)} {
898	SendCmd "camera mode ortho"
899	} else {
900	SendCmd "camera mode persp"
901	}
902	DoRotate
903	PanCamera
904	Zoom reset
905	}
906
907	set _reset 0
908	global readyForNextFrame
909	set readyForNextFrame 0; # Don't advance to the next frame
910	# until we get an image.
911
912	# Actually write the commands to the server socket. If it fails, we don't
913	# care. We're finished here.
914	blt::busy hold $itk_component(hull)
915	StopBufferingCommands
916	blt::busy release $itk_component(hull)
917	}
918
919	# ----------------------------------------------------------------------
920	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
921	#
922	# Returns a list of server IDs for the current datasets being displayed. This
923	# is normally a single ID, but it might be a list of IDs if the current data
924	# object has multiple components.
925	# ----------------------------------------------------------------------
926	itcl::body Rappture::VtkMeshViewer::CurrentDatasets {args} {
927	set flag [lindex $args 0]
928	switch -- $flag {
929	"-all" {
930	if { [llength $args] > 1 } {
931	error "CurrentDatasets: can't specify dataobj after \"-all\""
932	}
933	set dlist [get -objects]
934	}
935	"-visible" {
936	if { [llength $args] > 1 } {
937	set dlist {}
938	set args [lrange $args 1 end]
939	foreach dataobj $args {
940	if { [info exists _obj2ovride($dataobj-raise)] } {
941	lappend dlist $dataobj
942	}
943	}
944	} else {
945	set dlist [get -visible]
946	}
947	}
948	default {
949	set dlist $args
950	}
951	}
952	set rlist ""
953	foreach tag $dlist {
954	if { [info exists _datasets($tag)] && $_datasets($tag) } {
955	lappend rlist $tag
956	}
957	}
958	return $rlist
959	}
960
961	# ----------------------------------------------------------------------
962	# USAGE: Zoom in
963	# USAGE: Zoom out
964	# USAGE: Zoom reset
965	#
966	# Called automatically when the user clicks on one of the zoom
967	# controls for this widget. Changes the zoom for the current view.
968	# ----------------------------------------------------------------------
969	itcl::body Rappture::VtkMeshViewer::Zoom {option} {
970	switch -- $option {
971	"in" {
972	set _view(zoom) [expr {$_view(zoom)*1.25}]
973	SendCmd "camera zoom $_view(zoom)"
974	}
975	"out" {
976	set _view(zoom) [expr {$_view(zoom)*0.8}]
977	SendCmd "camera zoom $_view(zoom)"
978	}
979	"reset" {
980	array set _view {
981	qw 0.853553
982	qx -0.353553
983	qy 0.353553
984	qz 0.146447
985	zoom 1.0
986	xpan 0
987	ypan 0
988	}
989	if { $_first != "" } {
990	set location [$_first hints camera]
991	if { $location != "" } {
992	array set _view $location
993	}
994	}
995	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
996	$_arcball quaternion $q
997	DoRotate
998	SendCmd "camera reset"
999	}
1000	}
1001	}
1002
1003	itcl::body Rappture::VtkMeshViewer::PanCamera {} {
1004	set x $_view(xpan)
1005	set y $_view(ypan)
1006	SendCmd "camera pan $x $y"
1007	}
1008
1009	# ----------------------------------------------------------------------
1010	# USAGE: Rotate click <x> <y>
1011	# USAGE: Rotate drag <x> <y>
1012	# USAGE: Rotate release <x> <y>
1013	#
1014	# Called automatically when the user clicks/drags/releases in the
1015	# plot area. Moves the plot according to the user's actions.
1016	# ----------------------------------------------------------------------
1017	itcl::body Rappture::VtkMeshViewer::Rotate {option x y} {
1018	switch -- $option {
1019	"click" {
1020	$itk_component(view) configure -cursor fleur
1021	set _click(x) $x
1022	set _click(y) $y
1023	}
1024	"drag" {
1025	if {[array size _click] == 0} {
1026	Rotate click $x $y
1027	} else {
1028	set w [winfo width $itk_component(view)]
1029	set h [winfo height $itk_component(view)]
1030	if {$w <= 0 \|\| $h <= 0} {
1031	return
1032	}
1033
1034	if {[catch {
1035	# this fails sometimes for no apparent reason
1036	set dx [expr {double($x-$_click(x))/$w}]
1037	set dy [expr {double($y-$_click(y))/$h}]
1038	}]} {
1039	return
1040	}
1041	if { $dx == 0 && $dy == 0 } {
1042	return
1043	}
1044	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1045	EventuallyRotate $q
1046	set _click(x) $x
1047	set _click(y) $y
1048	}
1049	}
1050	"release" {
1051	Rotate drag $x $y
1052	$itk_component(view) configure -cursor ""
1053	catch {unset _click}
1054	}
1055	default {
1056	error "bad option \"$option\": should be click, drag, release"
1057	}
1058	}
1059	}
1060
1061	itcl::body Rappture::VtkMeshViewer::Pick {x y} {
1062	foreach tag [CurrentDatasets -visible] {
1063	SendCmd "dataset getscalar pixel $x $y $tag"
1064	}
1065	}
1066
1067	# ----------------------------------------------------------------------
1068	# USAGE: $this Pan click x y
1069	# $this Pan drag x y
1070	# $this Pan release x y
1071	#
1072	# Called automatically when the user clicks on one of the zoom
1073	# controls for this widget. Changes the zoom for the current view.
1074	# ----------------------------------------------------------------------
1075	itcl::body Rappture::VtkMeshViewer::Pan {option x y} {
1076	switch -- $option {
1077	"set" {
1078	set w [winfo width $itk_component(view)]
1079	set h [winfo height $itk_component(view)]
1080	set x [expr $x / double($w)]
1081	set y [expr $y / double($h)]
1082	set _view(xpan) [expr $_view(xpan) + $x]
1083	set _view(ypan) [expr $_view(ypan) + $y]
1084	PanCamera
1085	return
1086	}
1087	"click" {
1088	set _click(x) $x
1089	set _click(y) $y
1090	$itk_component(view) configure -cursor hand1
1091	}
1092	"drag" {
1093	if { ![info exists _click(x)] } {
1094	set _click(x) $x
1095	}
1096	if { ![info exists _click(y)] } {
1097	set _click(y) $y
1098	}
1099	set w [winfo width $itk_component(view)]
1100	set h [winfo height $itk_component(view)]
1101	set dx [expr ($_click(x) - $x)/double($w)]
1102	set dy [expr ($_click(y) - $y)/double($h)]
1103	set _click(x) $x
1104	set _click(y) $y
1105	set _view(xpan) [expr $_view(xpan) - $dx]
1106	set _view(ypan) [expr $_view(ypan) - $dy]
1107	PanCamera
1108	}
1109	"release" {
1110	Pan drag $x $y
1111	$itk_component(view) configure -cursor ""
1112	}
1113	default {
1114	error "unknown option \"$option\": should set, click, drag, or release"
1115	}
1116	}
1117	}
1118
1119	# ----------------------------------------------------------------------
1120	# USAGE: InitSettings <what> ?<value>?
1121	#
1122	# Used internally to update rendering settings whenever parameters
1123	# change in the popup settings panel. Sends the new settings off
1124	# to the back end.
1125	# ----------------------------------------------------------------------
1126	itcl::body Rappture::VtkMeshViewer::InitSettings { args } {
1127	foreach setting $args {
1128	AdjustSetting $setting
1129	}
1130	}
1131
1132	#
1133	# AdjustSetting --
1134	#
1135	# Changes/updates a specific setting in the widget. There are
1136	# usually user-setable option. Commands are sent to the render
1137	# server.
1138	#
1139	itcl::body Rappture::VtkMeshViewer::AdjustSetting {what {value ""}} {
1140	if { ![isconnected] } {
1141	return
1142	}
1143	switch -- $what {
1144	"-outline" {
1145	set bool $_settings($what)
1146	# Only display a outline for the currently visible sets.
1147	SendCmd "outline visible 0"
1148	foreach dataset [CurrentDatasets -visible] {
1149	SendCmd "outline visible $bool $dataset"
1150	}
1151	}
1152	"-polydataopacity" {
1153	set _settings($what) [expr $_widget($what) * 0.01]
1154	EventuallySetPolydataOpacity
1155	}
1156	"-polydatawireframe" {
1157	set bool $_settings($what)
1158	SendCmd "polydata wireframe $bool"
1159	}
1160	"-polydatavisible" {
1161	set bool $_settings($what)
1162	# Only change visibility of data sets marked "visible".
1163	foreach dataset [CurrentDatasets -visible] {
1164	SendCmd "polydata visible $bool $dataset"
1165	}
1166	}
1167	"-polydatalighting" {
1168	set bool $_settings($what)
1169	SendCmd "polydata lighting $bool"
1170	}
1171	"-polydataedges" {
1172	set bool $_settings($what)
1173	SendCmd "polydata edges $bool"
1174	}
1175	"-axesvisible" {
1176	set bool $_settings($what)
1177	SendCmd "axis visible all $bool"
1178	}
1179	"-axislabels" {
1180	set bool $_settings($what)
1181	SendCmd "axis labels all $bool"
1182	}
1183	"-axisminorticks" {
1184	set bool $_settings($what)
1185	SendCmd "axis minticks all $bool"
1186	}
1187	"-xgrid" {
1188	set bool $_settings($what)
1189	SendCmd "axis grid x $bool"
1190	}
1191	"-ygrid" {
1192	set bool $_settings($what)
1193	SendCmd "axis grid y $bool"
1194	}
1195	"-zgrid" {
1196	set bool $_settings($what)
1197	SendCmd "axis grid z $bool"
1198	}
1199	"-axismode" {
1200	set mode [$itk_component(axismode) value]
1201	set mode [$itk_component(axismode) translate $mode]
1202	SendCmd "axis flymode $mode"
1203	}
1204	default {
1205	error "don't know how to fix $what"
1206	}
1207	}
1208	}
1209
1210	# ----------------------------------------------------------------------
1211	# CONFIGURATION OPTION: -plotbackground
1212	# ----------------------------------------------------------------------
1213	itcl::configbody Rappture::VtkMeshViewer::plotbackground {
1214	if { [isconnected] } {
1215	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1216	SendCmd "screen bgcolor $r $g $b"
1217	}
1218	}
1219
1220	# ----------------------------------------------------------------------
1221	# CONFIGURATION OPTION: -plotforeground
1222	# ----------------------------------------------------------------------
1223	itcl::configbody Rappture::VtkMeshViewer::plotforeground {
1224	if { [isconnected] } {
1225	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1226	#fix this!
1227	#SendCmd "color background $r $g $b"
1228	}
1229	}
1230
1231	itcl::body Rappture::VtkMeshViewer::limits { dataobj } {
1232	set tag $dataobj
1233	if { ![info exists _limits($tag)] } {
1234	set data [$dataobj vtkdata -full]
1235	if { $data == "" } {
1236	continue
1237	}
1238	set tmpfile file[pid].vtk
1239	set f [open "$tmpfile" "w"]
1240	fconfigure $f -translation binary -encoding binary
1241	puts $f $data
1242	close $f
1243	set reader [vtkDataSetReader $tag-xvtkDataSetReader]
1244	$reader SetFileName $tmpfile
1245	$reader Update
1246	file delete $tmpfile
1247	set output [$reader GetOutput]
1248	set _limits($tag) [$output GetBounds]
1249	rename $output ""
1250	rename $reader ""
1251	}
1252	foreach { xMin xMax yMin yMax zMin zMax} $_limits($tag) break
1253	if {![info exists limits(xmin)] \|\| $limits(xmin) > $xMin} {
1254	set limits(xmin) $xMin
1255	}
1256	if {![info exists limits(xmax)] \|\| $limits(xmax) < $xMax} {
1257	set limits(xmax) $xMax
1258	}
1259	if {![info exists limits(ymin)] \|\| $limits(ymin) > $yMin} {
1260	set limits(ymin) $xMin
1261	}
1262	if {![info exists limits(ymax)] \|\| $limits(ymax) < $yMax} {
1263	set limits(ymax) $yMax
1264	}
1265	if {![info exists limits(zmin)] \|\| $limits(zmin) > $zMin} {
1266	set limits(zmin) $zMin
1267	}
1268	if {![info exists limits(zmax)] \|\| $limits(zmax) < $zMax} {
1269	set limits(zmax) $zMax
1270	}
1271
1272	return [array get limits]
1273	}
1274
1275	itcl::body Rappture::VtkMeshViewer::BuildPolydataTab {} {
1276
1277	set fg [option get $itk_component(hull) font Font]
1278	#set bfg [option get $itk_component(hull) boldFont Font]
1279
1280	set inner [$itk_component(main) insert end \
1281	-title "Mesh Settings" \
1282	-icon [Rappture::icon mesh]]
1283	$inner configure -borderwidth 4
1284
1285	checkbutton $inner.mesh \
1286	-text "Show Mesh" \
1287	-variable [itcl::scope _settings(-polydatavisible)] \
1288	-command [itcl::code $this AdjustSetting -polydatavisible] \
1289	-font "Arial 9" -anchor w
1290
1291	checkbutton $inner.outline \
1292	-text "Show Outline" \
1293	-variable [itcl::scope _settings(-outline)] \
1294	-command [itcl::code $this AdjustSetting -outline] \
1295	-font "Arial 9" -anchor w
1296
1297	checkbutton $inner.wireframe \
1298	-text "Show Wireframe" \
1299	-variable [itcl::scope _settings(-polydatawireframe)] \
1300	-command [itcl::code $this AdjustSetting -polydatawireframe] \
1301	-font "Arial 9" -anchor w
1302
1303	checkbutton $inner.lighting \
1304	-text "Enable Lighting" \
1305	-variable [itcl::scope _settings(-polydatalighting)] \
1306	-command [itcl::code $this AdjustSetting -polydatalighting] \
1307	-font "Arial 9" -anchor w
1308
1309	checkbutton $inner.edges \
1310	-text "Show Edges" \
1311	-variable [itcl::scope _settings(-polydataedges)] \
1312	-command [itcl::code $this AdjustSetting -polydataedges] \
1313	-font "Arial 9" -anchor w
1314
1315	itk_component add field_l {
1316	label $inner.field_l -text "Field" -font "Arial 9"
1317	} {
1318	ignore -font
1319	}
1320	itk_component add field {
1321	Rappture::Combobox $inner.field -width 10 -editable no
1322	}
1323	bind $inner.field <<Value>> \
1324	[itcl::code $this AdjustSetting -field]
1325
1326	label $inner.opacity_l -text "Opacity" -font "Arial 9" -anchor w
1327	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1328	-variable [itcl::scope _widget(-polydataopacity)] \
1329	-width 10 \
1330	-showvalue off \
1331	-command [itcl::code $this AdjustSetting -polydataopacity]
1332	$inner.opacity set [expr $_settings(-polydataopacity) * 100.0]
1333
1334	blt::table $inner \
1335	0,0 $inner.mesh -cspan 2 -anchor w -pady 2 \
1336	1,0 $inner.outline -cspan 2 -anchor w -pady 2 \
1337	2,0 $inner.wireframe -cspan 2 -anchor w -pady 2 \
1338	3,0 $inner.lighting -cspan 2 -anchor w -pady 2 \
1339	4,0 $inner.edges -cspan 2 -anchor w -pady 2 \
1340	5,0 $inner.opacity_l -anchor w -pady 2 \
1341	5,1 $inner.opacity -fill x -pady 2
1342
1343	blt::table configure $inner r* c* -resize none
1344	blt::table configure $inner r7 c1 -resize expand
1345	}
1346
1347	itcl::body Rappture::VtkMeshViewer::BuildAxisTab {} {
1348
1349	set fg [option get $itk_component(hull) font Font]
1350	#set bfg [option get $itk_component(hull) boldFont Font]
1351
1352	set inner [$itk_component(main) insert end \
1353	-title "Axis Settings" \
1354	-icon [Rappture::icon axis2]]
1355	$inner configure -borderwidth 4
1356
1357	checkbutton $inner.visible \
1358	-text "Axes" \
1359	-variable [itcl::scope _settings(-axesvisible)] \
1360	-command [itcl::code $this AdjustSetting -axesvisible] \
1361	-font "Arial 9"
1362
1363	checkbutton $inner.labels \
1364	-text "Axis Labels" \
1365	-variable [itcl::scope _settings(-axislabels)] \
1366	-command [itcl::code $this AdjustSetting -axislabels] \
1367	-font "Arial 9"
1368	label $inner.grid_l -text "Grid" -font "Arial 9"
1369	checkbutton $inner.xgrid \
1370	-text "X" \
1371	-variable [itcl::scope _settings(-xgrid)] \
1372	-command [itcl::code $this AdjustSetting -xgrid] \
1373	-font "Arial 9"
1374	checkbutton $inner.ygrid \
1375	-text "Y" \
1376	-variable [itcl::scope _settings(-ygrid)] \
1377	-command [itcl::code $this AdjustSetting -ygrid] \
1378	-font "Arial 9"
1379	checkbutton $inner.zgrid \
1380	-text "Z" \
1381	-variable [itcl::scope _settings(-zgrid)] \
1382	-command [itcl::code $this AdjustSetting -zgrid] \
1383	-font "Arial 9"
1384	checkbutton $inner.minorticks \
1385	-text "Minor Ticks" \
1386	-variable [itcl::scope _settings(-axisminorticks)] \
1387	-command [itcl::code $this AdjustSetting -axisminorticks] \
1388	-font "Arial 9"
1389
1390	label $inner.mode_l -text "Mode" -font "Arial 9"
1391
1392	itk_component add axismode {
1393	Rappture::Combobox $inner.mode -width 10 -editable no
1394	}
1395	$inner.mode choices insert end \
1396	"static_triad" "static" \
1397	"closest_triad" "closest" \
1398	"furthest_triad" "farthest" \
1399	"outer_edges" "outer"
1400	$itk_component(axismode) value "static"
1401	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1402
1403	blt::table $inner \
1404	0,0 $inner.visible -anchor w -cspan 4 \
1405	1,0 $inner.labels -anchor w -cspan 4 \
1406	2,0 $inner.minorticks -anchor w -cspan 4 \
1407	4,0 $inner.grid_l -anchor w \
1408	4,1 $inner.xgrid -anchor w \
1409	4,2 $inner.ygrid -anchor w \
1410	4,3 $inner.zgrid -anchor w \
1411	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1412	5,1 $inner.mode -fill x -cspan 3
1413
1414	blt::table configure $inner r* c* -resize none
1415	blt::table configure $inner r7 c6 -resize expand
1416	blt::table configure $inner r3 -height 0.125i
1417	}
1418
1419	itcl::body Rappture::VtkMeshViewer::BuildCameraTab {} {
1420	set inner [$itk_component(main) insert end \
1421	-title "Camera Settings" \
1422	-icon [Rappture::icon camera]]
1423	$inner configure -borderwidth 4
1424
1425	label $inner.view_l -text "view" -font "Arial 9"
1426	set f [frame $inner.view]
1427	foreach side { front back left right top bottom } {
1428	button $f.$side -image [Rappture::icon view$side] \
1429	-command [itcl::code $this SetOrientation $side]
1430	Rappture::Tooltip::for $f.$side "Change the view to $side"
1431	pack $f.$side -side left
1432	}
1433
1434	blt::table $inner \
1435	0,0 $inner.view_l -anchor e -pady 2 \
1436	0,1 $inner.view -anchor w -pady 2
1437
1438	set labels { qx qy qz qw xpan ypan zoom }
1439	set row 1
1440	foreach tag $labels {
1441	label $inner.${tag}label -text $tag -font "Arial 9"
1442	entry $inner.${tag} -font "Arial 9" -bg white \
1443	-textvariable [itcl::scope _view($tag)]
1444	bind $inner.${tag} <KeyPress-Return> \
1445	[itcl::code $this camera set ${tag}]
1446	blt::table $inner \
1447	$row,0 $inner.${tag}label -anchor e -pady 2 \
1448	$row,1 $inner.${tag} -anchor w -pady 2
1449	blt::table configure $inner r$row -resize none
1450	incr row
1451	}
1452	checkbutton $inner.ortho \
1453	-text "Orthographic Projection" \
1454	-variable [itcl::scope _view(ortho)] \
1455	-command [itcl::code $this camera set ortho] \
1456	-font "Arial 9"
1457	blt::table $inner \
1458	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1459	blt::table configure $inner r$row -resize none
1460	incr row
1461
1462	blt::table configure $inner c* r* -resize none
1463	blt::table configure $inner c2 -resize expand
1464	blt::table configure $inner r$row -resize expand
1465	}
1466
1467	#
1468	# camera --
1469	#
1470	itcl::body Rappture::VtkMeshViewer::camera {option args} {
1471	switch -- $option {
1472	"show" {
1473	puts [array get _view]
1474	}
1475	"set" {
1476	set who [lindex $args 0]
1477	set x $_view($who)
1478	set code [catch { string is double $x } result]
1479	if { $code != 0 \|\| !$result } {
1480	return
1481	}
1482	switch -- $who {
1483	"ortho" {
1484	if {$_view(ortho)} {
1485	SendCmd "camera mode ortho"
1486	} else {
1487	SendCmd "camera mode persp"
1488	}
1489	}
1490	"xpan" - "ypan" {
1491	PanCamera
1492	}
1493	"qx" - "qy" - "qz" - "qw" {
1494	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1495	$_arcball quaternion $q
1496	EventuallyRotate $q
1497	}
1498	"zoom" {
1499	SendCmd "camera zoom $_view(zoom)"
1500	}
1501	}
1502	}
1503	}
1504	}
1505
1506	itcl::body Rappture::VtkMeshViewer::GetVtkData { args } {
1507	set bytes ""
1508	foreach dataobj [get] {
1509	set contents [$dataobj vtkdata -full]
1510	append bytes "$contents\n"
1511	}
1512	return [list .vtk $bytes]
1513	}
1514
1515	itcl::body Rappture::VtkMeshViewer::GetImage { args } {
1516	if { [image width $_image(download)] > 0 &&
1517	[image height $_image(download)] > 0 } {
1518	set bytes [$_image(download) data -format "jpeg -quality 100"]
1519	set bytes [Rappture::encoding::decode -as b64 $bytes]
1520	return [list .jpg $bytes]
1521	}
1522	return ""
1523	}
1524
1525	itcl::body Rappture::VtkMeshViewer::BuildDownloadPopup { popup command } {
1526	Rappture::Balloon $popup \
1527	-title "[Rappture::filexfer::label downloadWord] as..."
1528	set inner [$popup component inner]
1529	label $inner.summary -text "" -anchor w
1530	radiobutton $inner.vtk_button -text "VTK data file" \
1531	-variable [itcl::scope _downloadPopup(format)] \
1532	-font "Helvetica 9 " \
1533	-value vtk
1534	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1535	radiobutton $inner.image_button -text "Image File" \
1536	-variable [itcl::scope _downloadPopup(format)] \
1537	-value image
1538	Rappture::Tooltip::for $inner.image_button \
1539	"Save as digital image."
1540
1541	button $inner.ok -text "Save" \
1542	-highlightthickness 0 -pady 2 -padx 3 \
1543	-command $command \
1544	-compound left \
1545	-image [Rappture::icon download]
1546
1547	button $inner.cancel -text "Cancel" \
1548	-highlightthickness 0 -pady 2 -padx 3 \
1549	-command [list $popup deactivate] \
1550	-compound left \
1551	-image [Rappture::icon cancel]
1552
1553	blt::table $inner \
1554	0,0 $inner.summary -cspan 2 \
1555	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1556	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1557	4,1 $inner.cancel -width .9i -fill y \
1558	4,0 $inner.ok -padx 2 -width .9i -fill y
1559	blt::table configure $inner r3 -height 4
1560	blt::table configure $inner r4 -pady 4
1561	raise $inner.image_button
1562	$inner.vtk_button invoke
1563	return $inner
1564	}
1565
1566	itcl::body Rappture::VtkMeshViewer::SetObjectStyle { dataobj } {
1567	# Parse style string.
1568	set tag $dataobj
1569	set type [$dataobj type]
1570
1571	array set style {
1572	-cloudstyle mesh
1573	-color white
1574	-edgecolor black
1575	-edges 1
1576	-lighting 1
1577	-linewidth 1.0
1578	-opacity 1.0
1579	-outline 0
1580	-visible 1
1581	-wireframe 0
1582	}
1583	if { $dataobj != $_first } {
1584	set style(-wireframe) 1
1585	}
1586	if {$type == "cloud"} {
1587	set style(-cloudstyle) points
1588	set style(-edges) 0
1589	set style(-edgecolor) white
1590	}
1591	array set style [$dataobj hints style]
1592
1593	if {[$dataobj hints color] != ""} {
1594	set style(-color) [$dataobj hints color]
1595	}
1596	SendCmd "outline add $tag"
1597	SendCmd "outline color [Color2RGB $style(-color)] $tag"
1598	SendCmd "outline visible $style(-outline) $tag"
1599	set _settings(-outline) $style(-outline)
1600
1601	SendCmd "polydata add $tag"
1602	SendCmd "polydata visible $style(-visible) $tag"
1603	set _settings(-polydatavisible) $style(-visible)
1604	SendCmd "polydata cloudstyle $style(-cloudstyle) $tag"
1605	SendCmd "polydata edges $style(-edges) $tag"
1606	set _settings(-polydataedges) $style(-edges)
1607	SendCmd "polydata color [Color2RGB $style(-color)] $tag"
1608	SendCmd "polydata lighting $style(-lighting) $tag"
1609	set _settings(-polydatalighting) $style(-lighting)
1610	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1611	SendCmd "polydata linewidth $style(-linewidth) $tag"
1612	SendCmd "polydata opacity $style(-opacity) $tag"
1613	set _settings(-polydataopacity) $style(-opacity)
1614	set _widget(-polydataopacity) [expr 100.0 * $style(-opacity)]
1615	SendCmd "polydata wireframe $style(-wireframe) $tag"
1616	set _settings(-polydatawireframe) $style(-wireframe)
1617	set havePolyData 1
1618	}
1619
1620	itcl::body Rappture::VtkMeshViewer::IsValidObject { dataobj } {
1621	if {[catch {$dataobj isa Rappture::Mesh} valid] != 0 \|\| !$valid} {
1622	return 0
1623	}
1624	return 1
1625	}
1626
1627	itcl::body Rappture::VtkMeshViewer::SetOrientation { side } {
1628	array set positions {
1629	front "1 0 0 0"
1630	back "0 0 1 0"
1631	left "0.707107 0 -0.707107 0"
1632	right "0.707107 0 0.707107 0"
1633	top "0.707107 -0.707107 0 0"
1634	bottom "0.707107 0.707107 0 0"
1635	}
1636	foreach name { qw qx qy qz } value $positions($side) {
1637	set _view($name) $value
1638	}
1639	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1640	$_arcball quaternion $q
1641	SendCmd "camera orient $q"
1642	SendCmd "camera reset"
1643	set _view(xpan) 0
1644	set _view(ypan) 0
1645	set _view(zoom) 1.0
1646	}

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