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source: trunk/gui/scripts/vtkmeshviewer.tcl @ 5347

Last change on this file since 5347 was 5347, checked in by ldelgass, 9 years ago
set _downloadPopup to private access
File size: 52.5 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 parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63
64	# The following methods are only used by this class.
65	private method AdjustSetting {what {value ""}}
66	private method BuildAxisTab {}
67	private method BuildCameraTab {}
68	private method BuildDownloadPopup { widget command }
69	private method BuildPolydataTab {}
70	private method Connect {}
71	private method CurrentDatasets {args}
72	private method Disconnect {}
73	private method DoResize {}
74	private method DoRotate {}
75	private method EventuallyResize { w h }
76	private method EventuallyRotate { q }
77	private method EventuallySetPolydataOpacity {}
78	private method GetImage { args }
79	private method GetVtkData { args }
80	private method InitSettings { args }
81	private method IsValidObject { dataobj }
82	private method Pan {option x y}
83	private method PanCamera {}
84	private method Pick {x y}
85	private method QuaternionToView { q } {
86	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
87	}
88	private method Rebuild {}
89	private method ReceiveDataset { args }
90	private method ReceiveImage { args }
91	private method Rotate {option x y}
92	private method SetObjectStyle { dataobj }
93	private method SetOrientation { side }
94	private method SetPolydataOpacity {}
95	private method ViewToQuaternion {} {
96	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
97	}
98	private method Zoom {option}
99
100	private variable _arcball ""
101	private variable _dlist ""; # list of data objects
102	private variable _obj2ovride; # maps dataobj => style override
103	private variable _datasets; # contains all the dataobj-component
104	# datasets in the server
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 _reset 1; # Connection to server has been reset.
111
112	private variable _first ""; # This is the topmost dataset.
113	private variable _start 0
114	private variable _title ""
115
116	private common _downloadPopup; # download options from popup
117	private common _hardcopy
118	private variable _width 0
119	private variable _height 0
120	private variable _resizePending 0
121	private variable _rotatePending 0
122	private variable _polydataOpacityPending 0
123	private variable _rotateDelay 150
124	private variable _opacityDelay 150
125	}
126
127	itk::usual VtkMeshViewer {
128	keep -background -foreground -cursor -font
129	keep -plotbackground -plotforeground
130	}
131
132	# ----------------------------------------------------------------------
133	# CONSTRUCTOR
134	# ----------------------------------------------------------------------
135	itcl::body Rappture::VtkMeshViewer::constructor {hostlist args} {
136	set _serverType "vtkvis"
137
138	# Rebuild event
139	$_dispatcher register !rebuild
140	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
141
142	# Resize event
143	$_dispatcher register !resize
144	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
145
146	# Rotate event
147	$_dispatcher register !rotate
148	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
149
150	# Polydata opacity event
151	$_dispatcher register !polydataOpacity
152	$_dispatcher dispatch $this !polydataOpacity \
153	"[itcl::code $this SetPolydataOpacity]; list"
154	#
155	# Populate parser with commands handle incoming requests
156	#
157	$_parser alias image [itcl::code $this ReceiveImage]
158	$_parser alias dataset [itcl::code $this ReceiveDataset]
159
160	# Initialize the view to some default parameters.
161	array set _view {
162	-ortho 0
163	-qw 0.853553
164	-qx -0.353553
165	-qy 0.353553
166	-qz 0.146447
167	-xpan 0
168	-ypan 0
169	-zoom 1.0
170	}
171	set _arcball [blt::arcball create 100 100]
172	$_arcball quaternion [ViewToQuaternion]
173
174	array set _settings {
175	-axesvisible 1
176	-axislabels 1
177	-axisminorticks 1
178	-outline 0
179	-polydataedges 0
180	-polydatalighting 1
181	-polydataopacity 1.0
182	-polydatavisible 1
183	-polydatawireframe 0
184	-xgrid 0
185	-ygrid 0
186	-zgrid 0
187	}
188	array set _widget {
189	-polydataopacity 100
190	}
191	itk_component add view {
192	canvas $itk_component(plotarea).view \
193	-highlightthickness 0 -borderwidth 0
194	} {
195	usual
196	ignore -highlightthickness -borderwidth -background
197	}
198
199	itk_component add fieldmenu {
200	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
201	-tearoff no
202	} {
203	usual
204	ignore -background -foreground -relief -tearoff
205	}
206
207	set c $itk_component(view)
208	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
209	bind $c <4> [itcl::code $this Zoom in 0.25]
210	bind $c <5> [itcl::code $this Zoom out 0.25]
211	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
212	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
213	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
214	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
215	bind $c <Enter> "focus %W"
216	bind $c <Control-F1> [itcl::code $this ToggleConsole]
217
218	# Fix the scrollregion in case we go off screen
219	$c configure -scrollregion [$c bbox all]
220
221	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
222	set _map(cwidth) -1
223	set _map(cheight) -1
224	set _map(zoom) 1.0
225	set _map(original) ""
226
227	set f [$itk_component(main) component controls]
228	itk_component add reset {
229	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
230	-highlightthickness 0 \
231	-image [Rappture::icon reset-view] \
232	-command [itcl::code $this Zoom reset]
233	} {
234	usual
235	ignore -highlightthickness
236	}
237	pack $itk_component(reset) -side top -padx 2 -pady 2
238	Rappture::Tooltip::for $itk_component(reset) \
239	"Reset the view to the default zoom level"
240
241	itk_component add zoomin {
242	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
243	-highlightthickness 0 \
244	-image [Rappture::icon zoom-in] \
245	-command [itcl::code $this Zoom in]
246	} {
247	usual
248	ignore -highlightthickness
249	}
250	pack $itk_component(zoomin) -side top -padx 2 -pady 2
251	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
252
253	itk_component add zoomout {
254	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
255	-highlightthickness 0 \
256	-image [Rappture::icon zoom-out] \
257	-command [itcl::code $this Zoom out]
258	} {
259	usual
260	ignore -highlightthickness
261	}
262	pack $itk_component(zoomout) -side top -padx 2 -pady 2
263	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
264
265	BuildPolydataTab
266	BuildAxisTab
267	BuildCameraTab
268
269	# Hack around the Tk panewindow. The problem is that the requested
270	# size of the 3d view isn't set until an image is retrieved from
271	# the server. So the panewindow uses the tiny size.
272	set w 10000
273	pack forget $itk_component(view)
274	blt::table $itk_component(plotarea) \
275	0,0 $itk_component(view) -fill both -reqwidth $w
276	blt::table configure $itk_component(plotarea) c1 -resize none
277
278	# Bindings for rotation via mouse
279	bind $itk_component(view) <ButtonPress-1> \
280	[itcl::code $this Rotate click %x %y]
281	bind $itk_component(view) <B1-Motion> \
282	[itcl::code $this Rotate drag %x %y]
283	bind $itk_component(view) <ButtonRelease-1> \
284	[itcl::code $this Rotate release %x %y]
285
286	# Bindings for panning via mouse
287	bind $itk_component(view) <ButtonPress-2> \
288	[itcl::code $this Pan click %x %y]
289	bind $itk_component(view) <B2-Motion> \
290	[itcl::code $this Pan drag %x %y]
291	bind $itk_component(view) <ButtonRelease-2> \
292	[itcl::code $this Pan release %x %y]
293
294	#bind $itk_component(view) <ButtonRelease-3> \
295	# [itcl::code $this Pick %x %y]
296
297	# Bindings for panning via keyboard
298	bind $itk_component(view) <KeyPress-Left> \
299	[itcl::code $this Pan set -10 0]
300	bind $itk_component(view) <KeyPress-Right> \
301	[itcl::code $this Pan set 10 0]
302	bind $itk_component(view) <KeyPress-Up> \
303	[itcl::code $this Pan set 0 -10]
304	bind $itk_component(view) <KeyPress-Down> \
305	[itcl::code $this Pan set 0 10]
306	bind $itk_component(view) <Shift-KeyPress-Left> \
307	[itcl::code $this Pan set -2 0]
308	bind $itk_component(view) <Shift-KeyPress-Right> \
309	[itcl::code $this Pan set 2 0]
310	bind $itk_component(view) <Shift-KeyPress-Up> \
311	[itcl::code $this Pan set 0 -2]
312	bind $itk_component(view) <Shift-KeyPress-Down> \
313	[itcl::code $this Pan set 0 2]
314
315	# Bindings for zoom via keyboard
316	bind $itk_component(view) <KeyPress-Prior> \
317	[itcl::code $this Zoom out]
318	bind $itk_component(view) <KeyPress-Next> \
319	[itcl::code $this Zoom in]
320
321	bind $itk_component(view) <Enter> "focus $itk_component(view)"
322
323	if {[string equal "x11" [tk windowingsystem]]} {
324	# Bindings for zoom via mouse
325	bind $itk_component(view) <4> [itcl::code $this Zoom out]
326	bind $itk_component(view) <5> [itcl::code $this Zoom in]
327	}
328
329	set _image(download) [image create photo]
330
331	eval itk_initialize $args
332
333	EnableWaitDialog 900
334	Connect
335	}
336
337	# ----------------------------------------------------------------------
338	# DESTRUCTOR
339	# ----------------------------------------------------------------------
340	itcl::body Rappture::VtkMeshViewer::destructor {} {
341	Disconnect
342	$_dispatcher cancel !rebuild
343	$_dispatcher cancel !resize
344	$_dispatcher cancel !rotate
345	image delete $_image(plot)
346	image delete $_image(download)
347	catch { blt::arcball destroy $_arcball }
348	}
349
350	itcl::body Rappture::VtkMeshViewer::DoResize {} {
351	if { $_width < 2 } {
352	set _width 500
353	}
354	if { $_height < 2 } {
355	set _height 500
356	}
357	set _start [clock clicks -milliseconds]
358	SendCmd "screen size $_width $_height"
359
360	set _resizePending 0
361	}
362
363	itcl::body Rappture::VtkMeshViewer::DoRotate {} {
364	SendCmd "camera orient [ViewToQuaternion]"
365	set _rotatePending 0
366	}
367
368	itcl::body Rappture::VtkMeshViewer::EventuallyResize { w h } {
369	set _width $w
370	set _height $h
371	$_arcball resize $w $h
372	if { !$_resizePending } {
373	set _resizePending 1
374	$_dispatcher event -after 200 !resize
375	}
376	}
377
378	itcl::body Rappture::VtkMeshViewer::EventuallyRotate { q } {
379	QuaternionToView $q
380	if { !$_rotatePending } {
381	set _rotatePending 1
382	$_dispatcher event -after $_rotateDelay !rotate
383	}
384	}
385
386	itcl::body Rappture::VtkMeshViewer::SetPolydataOpacity {} {
387	set _polydataOpacityPending 0
388	set val $_settings(-polydataopacity)
389	SendCmd "polydata opacity $val"
390	}
391
392	itcl::body Rappture::VtkMeshViewer::EventuallySetPolydataOpacity {} {
393	if { !$_polydataOpacityPending } {
394	set _polydataOpacityPending 1
395	$_dispatcher event -after $_opacityDelay !polydataOpacity
396	}
397	}
398
399	# ----------------------------------------------------------------------
400	# USAGE: add <dataobj> ?<settings>?
401	#
402	# Clients use this to add a data object to the plot. The optional
403	# <settings> are used to configure the plot. Allowed settings are
404	# -color, -brightness, -width, -linestyle, and -raise.
405	# ----------------------------------------------------------------------
406	itcl::body Rappture::VtkMeshViewer::add {dataobj {settings ""}} {
407	array set params {
408	-color auto
409	-width 1
410	-linestyle solid
411	-brightness 0
412	-raise 0
413	-description ""
414	-param ""
415	-type ""
416	}
417	array set params $settings
418	set params(-description) ""
419	set params(-param) ""
420	array set params $settings
421
422	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
423	# can't handle -autocolors yet
424	set params(-color) black
425	}
426	set pos [lsearch -exact $_dlist $dataobj]
427	if {$pos < 0} {
428	lappend _dlist $dataobj
429	}
430	set _obj2ovride($dataobj-color) $params(-color)
431	set _obj2ovride($dataobj-width) $params(-width)
432	set _obj2ovride($dataobj-raise) $params(-raise)
433	$_dispatcher event -idle !rebuild
434	}
435
436	# ----------------------------------------------------------------------
437	# USAGE: delete ?<dataobj1> <dataobj2> ...?
438	#
439	# Clients use this to delete a dataobj from the plot. If no dataobjs
440	# are specified, then all dataobjs are deleted. No data objects are
441	# deleted. They are only removed from the display list.
442	#
443	# ----------------------------------------------------------------------
444	itcl::body Rappture::VtkMeshViewer::delete {args} {
445	if { [llength $args] == 0} {
446	set args $_dlist
447	}
448	# Delete all specified dataobjs
449	set changed 0
450	foreach dataobj $args {
451	set pos [lsearch -exact $_dlist $dataobj]
452	if { $pos < 0 } {
453	continue; # Don't know anything about it.
454	}
455	# Remove it from the dataobj list.
456	set _dlist [lreplace $_dlist $pos $pos]
457	array unset _obj2ovride $dataobj-*
458	set changed 1
459	}
460	# If anything changed, then rebuild the plot
461	if { $changed } {
462	$_dispatcher event -idle !rebuild
463	}
464	}
465
466	# ----------------------------------------------------------------------
467	# USAGE: get ?-objects?
468	# USAGE: get ?-visible?
469	# USAGE: get ?-image view?
470	#
471	# Clients use this to query the list of objects being plotted, in
472	# order from bottom to top of this result. The optional "-image"
473	# flag can also request the internal images being shown.
474	# ----------------------------------------------------------------------
475	itcl::body Rappture::VtkMeshViewer::get {args} {
476	if {[llength $args] == 0} {
477	set args "-objects"
478	}
479
480	set op [lindex $args 0]
481	switch -- $op {
482	"-objects" {
483	# put the dataobj list in order according to -raise options
484	set dlist {}
485	foreach dataobj $_dlist {
486	if { ![IsValidObject $dataobj] } {
487	continue
488	}
489	if {[info exists _obj2ovride($dataobj-raise)] &&
490	$_obj2ovride($dataobj-raise)} {
491	set dlist [linsert $dlist 0 $dataobj]
492	} else {
493	lappend dlist $dataobj
494	}
495	}
496	return $dlist
497	}
498	"-visible" {
499	set dlist {}
500	foreach dataobj $_dlist {
501	if { ![IsValidObject $dataobj] } {
502	continue
503	}
504	if { ![info exists _obj2ovride($dataobj-raise)] } {
505	# No setting indicates that the object isn't visible.
506	continue
507	}
508	# Otherwise use the -raise parameter to put the object to
509	# the front of the list.
510	if { $_obj2ovride($dataobj-raise) } {
511	set dlist [linsert $dlist 0 $dataobj]
512	} else {
513	lappend dlist $dataobj
514	}
515	}
516	return $dlist
517	}
518	-image {
519	if {[llength $args] != 2} {
520	error "wrong # args: should be \"get -image view\""
521	}
522	switch -- [lindex $args end] {
523	view {
524	return $_image(plot)
525	}
526	default {
527	error "bad image name \"[lindex $args end]\": should be view"
528	}
529	}
530	}
531	default {
532	error "bad option \"$op\": should be -objects or -image"
533	}
534	}
535	}
536
537	# ----------------------------------------------------------------------
538	# USAGE: scale ?<data1> <data2> ...?
539	#
540	# Sets the default limits for the overall plot according to the
541	# limits of the data for all of the given <data> objects. This
542	# accounts for all objects--even those not showing on the screen.
543	# Because of this, the limits are appropriate for all objects as
544	# the user scans through data in the ResultSet viewer.
545	# ----------------------------------------------------------------------
546	itcl::body Rappture::VtkMeshViewer::scale {args} {
547	foreach dataobj $args {
548	if { ![$dataobj isvalid] } {
549	continue; # Object doesn't contain valid data.
550	}
551	foreach axis { x y z } {
552	set lim [$dataobj limits $axis]
553	if { ![info exists _limits($axis)] } {
554	set _limits($axis) $lim
555	continue
556	}
557	foreach {min max} $lim break
558	foreach {amin amax} $_limits($axis) break
559	if { $amin > $min } {
560	set amin $min
561	}
562	if { $amax < $max } {
563	set amax $max
564	}
565	set _limits($axis) [list $amin $amax]
566	}
567	}
568	}
569
570	# ----------------------------------------------------------------------
571	# USAGE: download coming
572	# USAGE: download controls <downloadCommand>
573	# USAGE: download now
574	#
575	# Clients use this method to create a downloadable representation
576	# of the plot. Returns a list of the form {ext string}, where
577	# "ext" is the file extension (indicating the type of data) and
578	# "string" is the data itself.
579	# ----------------------------------------------------------------------
580	itcl::body Rappture::VtkMeshViewer::download {option args} {
581	switch $option {
582	coming {
583	if {[catch {
584	blt::winop snap $itk_component(plotarea) $_image(download)
585	}]} {
586	$_image(download) configure -width 1 -height 1
587	$_image(download) put #000000
588	}
589	}
590	controls {
591	set popup .vtkviewerdownload
592	if { ![winfo exists .vtkviewerdownload] } {
593	set inner [BuildDownloadPopup $popup [lindex $args 0]]
594	} else {
595	set inner [$popup component inner]
596	}
597	set _downloadPopup(image_controls) $inner.image_frame
598	set num [llength [get]]
599	set num [expr {($num == 1) ? "1 result" : "$num results"}]
600	set word [Rappture::filexfer::label downloadWord]
601	$inner.summary configure -text "$word $num in the following format:"
602	update idletasks ;# Fix initial sizes
603	return $popup
604	}
605	now {
606	set popup .vtkviewerdownload
607	if {[winfo exists .vtkviewerdownload]} {
608	$popup deactivate
609	}
610	switch -- $_downloadPopup(format) {
611	"image" {
612	return [$this GetImage [lindex $args 0]]
613	}
614	"vtk" {
615	return [$this GetVtkData [lindex $args 0]]
616	}
617	}
618	return ""
619	}
620	default {
621	error "bad option \"$option\": should be coming, controls, now"
622	}
623	}
624	}
625
626	# ----------------------------------------------------------------------
627	# USAGE: Connect ?<host:port>,<host:port>...?
628	#
629	# Clients use this method to establish a connection to a new
630	# server, or to reestablish a connection to the previous server.
631	# Any existing connection is automatically closed.
632	# ----------------------------------------------------------------------
633	itcl::body Rappture::VtkMeshViewer::Connect {} {
634	global readyForNextFrame
635	set readyForNextFrame 1
636	set _hosts [GetServerList "vtkvis"]
637	if { "" == $_hosts } {
638	return 0
639	}
640	set _reset 1
641	set result [VisViewer::Connect $_hosts]
642	if { $result } {
643	if { $_reportClientInfo } {
644	# Tell the server the viewer, hub, user and session.
645	# Do this immediately on connect before buffering any commands
646	global env
647
648	set info {}
649	set user "???"
650	if { [info exists env(USER)] } {
651	set user $env(USER)
652	}
653	set session "???"
654	if { [info exists env(SESSION)] } {
655	set session $env(SESSION)
656	}
657	lappend info "version" "$Rappture::version"
658	lappend info "build" "$Rappture::build"
659	lappend info "svnurl" "$Rappture::svnurl"
660	lappend info "installdir" "$Rappture::installdir"
661	lappend info "hub" [exec hostname]
662	lappend info "client" "vtkmeshviewer"
663	lappend info "user" $user
664	lappend info "session" $session
665	SendCmd "clientinfo [list $info]"
666	}
667
668	set w [winfo width $itk_component(view)]
669	set h [winfo height $itk_component(view)]
670	EventuallyResize $w $h
671	}
672	return $result
673	}
674
675	#
676	# isconnected --
677	#
678	# Indicates if we are currently connected to the visualization server.
679	#
680	itcl::body Rappture::VtkMeshViewer::isconnected {} {
681	return [VisViewer::IsConnected]
682	}
683
684	#
685	# disconnect --
686	#
687	itcl::body Rappture::VtkMeshViewer::disconnect {} {
688	Disconnect
689	set _reset 1
690	}
691
692	#
693	# Disconnect --
694	#
695	# Clients use this method to disconnect from the current rendering
696	# server.
697	#
698	itcl::body Rappture::VtkMeshViewer::Disconnect {} {
699	VisViewer::Disconnect
700
701	# disconnected -- no more data sitting on server
702	array unset _datasets
703	global readyForNextFrame
704	set readyForNextFrame 1
705	}
706
707	# ----------------------------------------------------------------------
708	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
709	#
710	# Invoked automatically whenever the "image" command comes in from
711	# the rendering server. Indicates that binary image data with the
712	# specified <size> will follow.
713	# ----------------------------------------------------------------------
714	itcl::body Rappture::VtkMeshViewer::ReceiveImage { args } {
715	global readyForNextFrame
716	set readyForNextFrame 1
717	array set info {
718	-token "???"
719	-bytes 0
720	-type image
721	}
722	array set info $args
723	set bytes [ReceiveBytes $info(-bytes)]
724	if { $info(-type) == "image" } {
725	if 0 {
726	set f [open "last.ppm" "w"]
727	fconfigure $f -encoding binary
728	puts -nonewline $f $bytes
729	close $f
730	}
731	$_image(plot) configure -data $bytes
732	set time [clock seconds]
733	set date [clock format $time]
734	if { $_start > 0 } {
735	set finish [clock clicks -milliseconds]
736	set _start 0
737	}
738	} elseif { $info(type) == "print" } {
739	set tag $this-print-$info(-token)
740	set _hardcopy($tag) $bytes
741	}
742	}
743
744	#
745	# ReceiveDataset --
746	#
747	itcl::body Rappture::VtkMeshViewer::ReceiveDataset { args } {
748	if { ![isconnected] } {
749	return
750	}
751	set option [lindex $args 0]
752	switch -- $option {
753	"scalar" {
754	set option [lindex $args 1]
755	switch -- $option {
756	"world" {
757	foreach { x y z value tag } [lrange $args 2 end] break
758	}
759	"pixel" {
760	foreach { x y value tag } [lrange $args 2 end] break
761	}
762	}
763	}
764	"vector" {
765	set option [lindex $args 1]
766	switch -- $option {
767	"world" {
768	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
769	}
770	"pixel" {
771	foreach { x y vx vy vz tag } [lrange $args 2 end] break
772	}
773	}
774	}
775	"names" {
776	foreach { name } [lindex $args 1] {
777	#puts stderr "Dataset: $name"
778	}
779	}
780	default {
781	error "unknown dataset option \"$option\" from server"
782	}
783	}
784	}
785
786	# ----------------------------------------------------------------------
787	# USAGE: Rebuild
788	#
789	# Called automatically whenever something changes that affects the
790	# data in the widget. Clears any existing data and rebuilds the
791	# widget to display new data.
792	# ----------------------------------------------------------------------
793	itcl::body Rappture::VtkMeshViewer::Rebuild {} {
794	set w [winfo width $itk_component(view)]
795	set h [winfo height $itk_component(view)]
796	if { $w < 2 \|\| $h < 2 } {
797	update
798	$_dispatcher event -idle !rebuild
799	return
800	}
801
802	# Turn on buffering of commands to the server. We don't want to
803	# be preempted by a server disconnect/reconnect (which automatically
804	# generates a new call to Rebuild).
805	StartBufferingCommands
806
807	if { $_reset } {
808	set _width $w
809	set _height $h
810	$_arcball resize $w $h
811	DoResize
812	InitSettings -xgrid -ygrid -zgrid -axismode \
813	-axesvisible -axislabels -axisminorticks
814	StopBufferingCommands
815	SendCmd "imgflush"
816	StartBufferingCommands
817	}
818
819	set _first ""
820	SendCmd "dataset visible 0"
821	set count 0
822	foreach dataobj [get -objects] {
823	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
824	set _first $dataobj
825	}
826	set tag $dataobj
827	if { ![info exists _datasets($tag)] } {
828	set bytes [$dataobj vtkdata -full]
829	if { $bytes == "" } {
830	continue
831	}
832	if 0 {
833	set f [open /tmp/vtkmesh.vtk "w"]
834	fconfigure $f -translation binary -encoding binary
835	puts -nonewline $f $bytes
836	close $f
837	}
838	set length [string length $bytes]
839	if { $_reportClientInfo } {
840	set info {}
841	lappend info "tool_id" [$dataobj hints toolid]
842	lappend info "tool_name" [$dataobj hints toolname]
843	lappend info "tool_title" [$dataobj hints tooltitle]
844	lappend info "tool_command" [$dataobj hints toolcommand]
845	lappend info "tool_revision" [$dataobj hints toolrevision]
846	lappend info "dataset_label" [$dataobj hints label]
847	lappend info "dataset_size" $length
848	lappend info "dataset_tag" $tag
849	SendCmd "clientinfo [list $info]"
850	}
851	SendCmd "dataset add $tag data follows $length"
852	SendData $bytes
853	set _datasets($tag) 1
854	SetObjectStyle $dataobj
855	}
856	if { [info exists _obj2ovride($dataobj-raise)] } {
857	SendCmd "dataset visible 1 $tag"
858	EventuallySetPolydataOpacity
859	}
860	}
861	if {"" != $_first} {
862	set location [$_first hints camera]
863	if { $location != "" } {
864	array set view $location
865	}
866
867	foreach axis { x y z } {
868	set label [$_first label ${axis}]
869	if { $label != "" } {
870	SendCmd [list axis name $axis $label]
871	}
872	set units [$_first units ${axis}]
873	if { $units != "" } {
874	SendCmd [list axis units $axis $units]
875	}
876	}
877	}
878	InitSettings -outline
879	if { $_reset } {
880	# These are settings that rely on a dataset being loaded.
881	InitSettings -polydataedges -polydatalighting -polydataopacity \
882	-polydatavisible -polydatawireframe
883
884	#SendCmd "axis lformat all %g"
885
886	$_arcball quaternion [ViewToQuaternion]
887	SendCmd "camera reset"
888	if { $_view(-ortho)} {
889	SendCmd "camera mode ortho"
890	} else {
891	SendCmd "camera mode persp"
892	}
893	DoRotate
894	PanCamera
895	Zoom reset
896	}
897
898	set _reset 0
899	global readyForNextFrame
900	set readyForNextFrame 0; # Don't advance to the next frame
901	# until we get an image.
902
903	# Actually write the commands to the server socket. If it fails, we don't
904	# care. We're finished here.
905	blt::busy hold $itk_component(hull)
906	StopBufferingCommands
907	blt::busy release $itk_component(hull)
908	}
909
910	# ----------------------------------------------------------------------
911	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
912	#
913	# Returns a list of server IDs for the current datasets being displayed. This
914	# is normally a single ID, but it might be a list of IDs if the current data
915	# object has multiple components.
916	# ----------------------------------------------------------------------
917	itcl::body Rappture::VtkMeshViewer::CurrentDatasets {args} {
918	set flag [lindex $args 0]
919	switch -- $flag {
920	"-all" {
921	if { [llength $args] > 1 } {
922	error "CurrentDatasets: can't specify dataobj after \"-all\""
923	}
924	set dlist [get -objects]
925	}
926	"-visible" {
927	if { [llength $args] > 1 } {
928	set dlist {}
929	set args [lrange $args 1 end]
930	foreach dataobj $args {
931	if { [info exists _obj2ovride($dataobj-raise)] } {
932	lappend dlist $dataobj
933	}
934	}
935	} else {
936	set dlist [get -visible]
937	}
938	}
939	default {
940	set dlist $args
941	}
942	}
943	set rlist ""
944	foreach tag $dlist {
945	if { [info exists _datasets($tag)] && $_datasets($tag) } {
946	lappend rlist $tag
947	}
948	}
949	return $rlist
950	}
951
952	# ----------------------------------------------------------------------
953	# USAGE: Zoom in
954	# USAGE: Zoom out
955	# USAGE: Zoom reset
956	#
957	# Called automatically when the user clicks on one of the zoom
958	# controls for this widget. Changes the zoom for the current view.
959	# ----------------------------------------------------------------------
960	itcl::body Rappture::VtkMeshViewer::Zoom {option} {
961	switch -- $option {
962	"in" {
963	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
964	SendCmd "camera zoom $_view(-zoom)"
965	}
966	"out" {
967	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
968	SendCmd "camera zoom $_view(-zoom)"
969	}
970	"reset" {
971	array set _view {
972	-qw 0.853553
973	-qx -0.353553
974	-qy 0.353553
975	-qz 0.146447
976	-xpan 0
977	-ypan 0
978	-zoom 1.0
979	}
980	if { $_first != "" } {
981	set location [$_first hints camera]
982	if { $location != "" } {
983	array set _view $location
984	}
985	}
986	$_arcball quaternion [ViewToQuaternion]
987	DoRotate
988	SendCmd "camera reset"
989	}
990	}
991	}
992
993	itcl::body Rappture::VtkMeshViewer::PanCamera {} {
994	set x $_view(-xpan)
995	set y $_view(-ypan)
996	SendCmd "camera pan $x $y"
997	}
998
999	# ----------------------------------------------------------------------
1000	# USAGE: Rotate click <x> <y>
1001	# USAGE: Rotate drag <x> <y>
1002	# USAGE: Rotate release <x> <y>
1003	#
1004	# Called automatically when the user clicks/drags/releases in the
1005	# plot area. Moves the plot according to the user's actions.
1006	# ----------------------------------------------------------------------
1007	itcl::body Rappture::VtkMeshViewer::Rotate {option x y} {
1008	switch -- $option {
1009	"click" {
1010	$itk_component(view) configure -cursor fleur
1011	set _click(x) $x
1012	set _click(y) $y
1013	}
1014	"drag" {
1015	if {[array size _click] == 0} {
1016	Rotate click $x $y
1017	} else {
1018	set w [winfo width $itk_component(view)]
1019	set h [winfo height $itk_component(view)]
1020	if {$w <= 0 \|\| $h <= 0} {
1021	return
1022	}
1023
1024	if {[catch {
1025	# this fails sometimes for no apparent reason
1026	set dx [expr {double($x-$_click(x))/$w}]
1027	set dy [expr {double($y-$_click(y))/$h}]
1028	}]} {
1029	return
1030	}
1031	if { $dx == 0 && $dy == 0 } {
1032	return
1033	}
1034	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1035	EventuallyRotate $q
1036	set _click(x) $x
1037	set _click(y) $y
1038	}
1039	}
1040	"release" {
1041	Rotate drag $x $y
1042	$itk_component(view) configure -cursor ""
1043	catch {unset _click}
1044	}
1045	default {
1046	error "bad option \"$option\": should be click, drag, release"
1047	}
1048	}
1049	}
1050
1051	itcl::body Rappture::VtkMeshViewer::Pick {x y} {
1052	foreach tag [CurrentDatasets -visible] {
1053	SendCmd "dataset getscalar pixel $x $y $tag"
1054	}
1055	}
1056
1057	# ----------------------------------------------------------------------
1058	# USAGE: $this Pan click x y
1059	# $this Pan drag x y
1060	# $this Pan release x y
1061	#
1062	# Called automatically when the user clicks on one of the zoom
1063	# controls for this widget. Changes the zoom for the current view.
1064	# ----------------------------------------------------------------------
1065	itcl::body Rappture::VtkMeshViewer::Pan {option x y} {
1066	switch -- $option {
1067	"set" {
1068	set w [winfo width $itk_component(view)]
1069	set h [winfo height $itk_component(view)]
1070	set x [expr $x / double($w)]
1071	set y [expr $y / double($h)]
1072	set _view(-xpan) [expr $_view(-xpan) + $x]
1073	set _view(-ypan) [expr $_view(-ypan) + $y]
1074	PanCamera
1075	return
1076	}
1077	"click" {
1078	set _click(x) $x
1079	set _click(y) $y
1080	$itk_component(view) configure -cursor hand1
1081	}
1082	"drag" {
1083	if { ![info exists _click(x)] } {
1084	set _click(x) $x
1085	}
1086	if { ![info exists _click(y)] } {
1087	set _click(y) $y
1088	}
1089	set w [winfo width $itk_component(view)]
1090	set h [winfo height $itk_component(view)]
1091	set dx [expr ($_click(x) - $x)/double($w)]
1092	set dy [expr ($_click(y) - $y)/double($h)]
1093	set _click(x) $x
1094	set _click(y) $y
1095	set _view(-xpan) [expr $_view(-xpan) - $dx]
1096	set _view(-ypan) [expr $_view(-ypan) - $dy]
1097	PanCamera
1098	}
1099	"release" {
1100	Pan drag $x $y
1101	$itk_component(view) configure -cursor ""
1102	}
1103	default {
1104	error "unknown option \"$option\": should set, click, drag, or release"
1105	}
1106	}
1107	}
1108
1109	# ----------------------------------------------------------------------
1110	# USAGE: InitSettings <what> ?<value>?
1111	#
1112	# Used internally to update rendering settings whenever parameters
1113	# change in the popup settings panel. Sends the new settings off
1114	# to the back end.
1115	# ----------------------------------------------------------------------
1116	itcl::body Rappture::VtkMeshViewer::InitSettings { args } {
1117	foreach setting $args {
1118	AdjustSetting $setting
1119	}
1120	}
1121
1122	#
1123	# AdjustSetting --
1124	#
1125	# Changes/updates a specific setting in the widget. There are
1126	# usually user-setable option. Commands are sent to the render
1127	# server.
1128	#
1129	itcl::body Rappture::VtkMeshViewer::AdjustSetting {what {value ""}} {
1130	if { ![isconnected] } {
1131	return
1132	}
1133	switch -- $what {
1134	"-outline" {
1135	set bool $_settings($what)
1136	# Only display a outline for the currently visible sets.
1137	SendCmd "outline visible 0"
1138	foreach dataset [CurrentDatasets -visible] {
1139	SendCmd "outline visible $bool $dataset"
1140	}
1141	}
1142	"-polydataopacity" {
1143	set _settings($what) [expr $_widget($what) * 0.01]
1144	EventuallySetPolydataOpacity
1145	}
1146	"-polydatawireframe" {
1147	set bool $_settings($what)
1148	SendCmd "polydata wireframe $bool"
1149	}
1150	"-polydatavisible" {
1151	set bool $_settings($what)
1152	# Only change visibility of data sets marked "visible".
1153	foreach dataset [CurrentDatasets -visible] {
1154	SendCmd "polydata visible $bool $dataset"
1155	}
1156	}
1157	"-polydatalighting" {
1158	set bool $_settings($what)
1159	SendCmd "polydata lighting $bool"
1160	}
1161	"-polydataedges" {
1162	set bool $_settings($what)
1163	SendCmd "polydata edges $bool"
1164	}
1165	"-axesvisible" {
1166	set bool $_settings($what)
1167	SendCmd "axis visible all $bool"
1168	}
1169	"-axislabels" {
1170	set bool $_settings($what)
1171	SendCmd "axis labels all $bool"
1172	}
1173	"-axisminorticks" {
1174	set bool $_settings($what)
1175	SendCmd "axis minticks all $bool"
1176	}
1177	"-xgrid" {
1178	set bool $_settings($what)
1179	SendCmd "axis grid x $bool"
1180	}
1181	"-ygrid" {
1182	set bool $_settings($what)
1183	SendCmd "axis grid y $bool"
1184	}
1185	"-zgrid" {
1186	set bool $_settings($what)
1187	SendCmd "axis grid z $bool"
1188	}
1189	"-axismode" {
1190	set mode [$itk_component(axismode) value]
1191	set mode [$itk_component(axismode) translate $mode]
1192	SendCmd "axis flymode $mode"
1193	}
1194	default {
1195	error "don't know how to fix $what"
1196	}
1197	}
1198	}
1199
1200	# ----------------------------------------------------------------------
1201	# CONFIGURATION OPTION: -plotbackground
1202	# ----------------------------------------------------------------------
1203	itcl::configbody Rappture::VtkMeshViewer::plotbackground {
1204	if { [isconnected] } {
1205	set rgb [Color2RGB $itk_option(-plotbackground)]
1206	SendCmd "screen bgcolor $rgb"
1207	}
1208	}
1209
1210	# ----------------------------------------------------------------------
1211	# CONFIGURATION OPTION: -plotforeground
1212	# ----------------------------------------------------------------------
1213	itcl::configbody Rappture::VtkMeshViewer::plotforeground {
1214	if { [isconnected] } {
1215	set rgb [Color2RGB $itk_option(-plotforeground)]
1216	SendCmd "axis color all $rgb"
1217	SendCmd "outline color $rgb"
1218	}
1219	}
1220
1221	itcl::body Rappture::VtkMeshViewer::BuildPolydataTab {} {
1222
1223	set fg [option get $itk_component(hull) font Font]
1224	#set bfg [option get $itk_component(hull) boldFont Font]
1225
1226	set inner [$itk_component(main) insert end \
1227	-title "Mesh Settings" \
1228	-icon [Rappture::icon mesh]]
1229	$inner configure -borderwidth 4
1230
1231	checkbutton $inner.mesh \
1232	-text "Show Mesh" \
1233	-variable [itcl::scope _settings(-polydatavisible)] \
1234	-command [itcl::code $this AdjustSetting -polydatavisible] \
1235	-font "Arial 9" -anchor w
1236
1237	checkbutton $inner.outline \
1238	-text "Show Outline" \
1239	-variable [itcl::scope _settings(-outline)] \
1240	-command [itcl::code $this AdjustSetting -outline] \
1241	-font "Arial 9" -anchor w
1242
1243	checkbutton $inner.wireframe \
1244	-text "Show Wireframe" \
1245	-variable [itcl::scope _settings(-polydatawireframe)] \
1246	-command [itcl::code $this AdjustSetting -polydatawireframe] \
1247	-font "Arial 9" -anchor w
1248
1249	checkbutton $inner.lighting \
1250	-text "Enable Lighting" \
1251	-variable [itcl::scope _settings(-polydatalighting)] \
1252	-command [itcl::code $this AdjustSetting -polydatalighting] \
1253	-font "Arial 9" -anchor w
1254
1255	checkbutton $inner.edges \
1256	-text "Show Edges" \
1257	-variable [itcl::scope _settings(-polydataedges)] \
1258	-command [itcl::code $this AdjustSetting -polydataedges] \
1259	-font "Arial 9" -anchor w
1260
1261	itk_component add field_l {
1262	label $inner.field_l -text "Field" -font "Arial 9"
1263	} {
1264	ignore -font
1265	}
1266	itk_component add field {
1267	Rappture::Combobox $inner.field -width 10 -editable no
1268	}
1269	bind $inner.field <<Value>> \
1270	[itcl::code $this AdjustSetting -field]
1271
1272	label $inner.opacity_l -text "Opacity" -font "Arial 9" -anchor w
1273	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1274	-variable [itcl::scope _widget(-polydataopacity)] \
1275	-width 10 \
1276	-showvalue off \
1277	-command [itcl::code $this AdjustSetting -polydataopacity]
1278	$inner.opacity set [expr $_settings(-polydataopacity) * 100.0]
1279
1280	blt::table $inner \
1281	0,0 $inner.mesh -cspan 2 -anchor w -pady 2 \
1282	1,0 $inner.outline -cspan 2 -anchor w -pady 2 \
1283	2,0 $inner.wireframe -cspan 2 -anchor w -pady 2 \
1284	3,0 $inner.lighting -cspan 2 -anchor w -pady 2 \
1285	4,0 $inner.edges -cspan 2 -anchor w -pady 2 \
1286	5,0 $inner.opacity_l -anchor w -pady 2 \
1287	5,1 $inner.opacity -fill x -pady 2
1288
1289	blt::table configure $inner r* c* -resize none
1290	blt::table configure $inner r7 c1 -resize expand
1291	}
1292
1293	itcl::body Rappture::VtkMeshViewer::BuildAxisTab {} {
1294
1295	set fg [option get $itk_component(hull) font Font]
1296	#set bfg [option get $itk_component(hull) boldFont Font]
1297
1298	set inner [$itk_component(main) insert end \
1299	-title "Axis Settings" \
1300	-icon [Rappture::icon axis2]]
1301	$inner configure -borderwidth 4
1302
1303	checkbutton $inner.visible \
1304	-text "Axes" \
1305	-variable [itcl::scope _settings(-axesvisible)] \
1306	-command [itcl::code $this AdjustSetting -axesvisible] \
1307	-font "Arial 9"
1308
1309	checkbutton $inner.labels \
1310	-text "Axis Labels" \
1311	-variable [itcl::scope _settings(-axislabels)] \
1312	-command [itcl::code $this AdjustSetting -axislabels] \
1313	-font "Arial 9"
1314	label $inner.grid_l -text "Grid" -font "Arial 9"
1315	checkbutton $inner.xgrid \
1316	-text "X" \
1317	-variable [itcl::scope _settings(-xgrid)] \
1318	-command [itcl::code $this AdjustSetting -xgrid] \
1319	-font "Arial 9"
1320	checkbutton $inner.ygrid \
1321	-text "Y" \
1322	-variable [itcl::scope _settings(-ygrid)] \
1323	-command [itcl::code $this AdjustSetting -ygrid] \
1324	-font "Arial 9"
1325	checkbutton $inner.zgrid \
1326	-text "Z" \
1327	-variable [itcl::scope _settings(-zgrid)] \
1328	-command [itcl::code $this AdjustSetting -zgrid] \
1329	-font "Arial 9"
1330	checkbutton $inner.minorticks \
1331	-text "Minor Ticks" \
1332	-variable [itcl::scope _settings(-axisminorticks)] \
1333	-command [itcl::code $this AdjustSetting -axisminorticks] \
1334	-font "Arial 9"
1335
1336	label $inner.mode_l -text "Mode" -font "Arial 9"
1337
1338	itk_component add axismode {
1339	Rappture::Combobox $inner.mode -width 10 -editable no
1340	}
1341	$inner.mode choices insert end \
1342	"static_triad" "static" \
1343	"closest_triad" "closest" \
1344	"furthest_triad" "farthest" \
1345	"outer_edges" "outer"
1346	$itk_component(axismode) value "static"
1347	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1348
1349	blt::table $inner \
1350	0,0 $inner.visible -anchor w -cspan 4 \
1351	1,0 $inner.labels -anchor w -cspan 4 \
1352	2,0 $inner.minorticks -anchor w -cspan 4 \
1353	4,0 $inner.grid_l -anchor w \
1354	4,1 $inner.xgrid -anchor w \
1355	4,2 $inner.ygrid -anchor w \
1356	4,3 $inner.zgrid -anchor w \
1357	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1358	5,1 $inner.mode -fill x -cspan 3
1359
1360	blt::table configure $inner r* c* -resize none
1361	blt::table configure $inner r7 c6 -resize expand
1362	blt::table configure $inner r3 -height 0.125i
1363	}
1364
1365	itcl::body Rappture::VtkMeshViewer::BuildCameraTab {} {
1366	set inner [$itk_component(main) insert end \
1367	-title "Camera Settings" \
1368	-icon [Rappture::icon camera]]
1369	$inner configure -borderwidth 4
1370
1371	label $inner.view_l -text "view" -font "Arial 9"
1372	set f [frame $inner.view]
1373	foreach side { front back left right top bottom } {
1374	button $f.$side -image [Rappture::icon view$side] \
1375	-command [itcl::code $this SetOrientation $side]
1376	Rappture::Tooltip::for $f.$side "Change the view to $side"
1377	pack $f.$side -side left
1378	}
1379
1380	blt::table $inner \
1381	0,0 $inner.view_l -anchor e -pady 2 \
1382	0,1 $inner.view -anchor w -pady 2
1383	blt::table configure $inner r0 -resize none
1384
1385	set labels { qx qy qz qw xpan ypan zoom }
1386	set row 1
1387	foreach tag $labels {
1388	label $inner.${tag}label -text $tag -font "Arial 9"
1389	entry $inner.${tag} -font "Arial 9" -bg white \
1390	-textvariable [itcl::scope _view(-$tag)]
1391	bind $inner.${tag} <Return> \
1392	[itcl::code $this camera set -${tag}]
1393	bind $inner.${tag} <KP_Enter> \
1394	[itcl::code $this camera set -${tag}]
1395	blt::table $inner \
1396	$row,0 $inner.${tag}label -anchor e -pady 2 \
1397	$row,1 $inner.${tag} -anchor w -pady 2
1398	blt::table configure $inner r$row -resize none
1399	incr row
1400	}
1401	checkbutton $inner.ortho \
1402	-text "Orthographic Projection" \
1403	-variable [itcl::scope _view(-ortho)] \
1404	-command [itcl::code $this camera set -ortho] \
1405	-font "Arial 9"
1406	blt::table $inner \
1407	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1408	blt::table configure $inner r$row -resize none
1409	incr row
1410
1411	blt::table configure $inner c* -resize none
1412	blt::table configure $inner c2 -resize expand
1413	blt::table configure $inner r$row -resize expand
1414	}
1415
1416	#
1417	# camera --
1418	#
1419	itcl::body Rappture::VtkMeshViewer::camera {option args} {
1420	switch -- $option {
1421	"show" {
1422	puts [array get _view]
1423	}
1424	"set" {
1425	set what [lindex $args 0]
1426	set x $_view($what)
1427	set code [catch { string is double $x } result]
1428	if { $code != 0 \|\| !$result } {
1429	return
1430	}
1431	switch -- $what {
1432	"-ortho" {
1433	if {$_view($what)} {
1434	SendCmd "camera mode ortho"
1435	} else {
1436	SendCmd "camera mode persp"
1437	}
1438	}
1439	"-xpan" - "-ypan" {
1440	PanCamera
1441	}
1442	"-qx" - "-qy" - "-qz" - "-qw" {
1443	set q [ViewToQuaternion]
1444	$_arcball quaternion $q
1445	EventuallyRotate $q
1446	}
1447	"-zoom" {
1448	SendCmd "camera zoom $_view($what)"
1449	}
1450	}
1451	}
1452	}
1453	}
1454
1455	itcl::body Rappture::VtkMeshViewer::GetVtkData { args } {
1456	set bytes ""
1457	foreach dataobj [get] {
1458	set contents [$dataobj vtkdata -full]
1459	append bytes "$contents\n"
1460	}
1461	return [list .vtk $bytes]
1462	}
1463
1464	itcl::body Rappture::VtkMeshViewer::GetImage { args } {
1465	if { [image width $_image(download)] > 0 &&
1466	[image height $_image(download)] > 0 } {
1467	set bytes [$_image(download) data -format "jpeg -quality 100"]
1468	set bytes [Rappture::encoding::decode -as b64 $bytes]
1469	return [list .jpg $bytes]
1470	}
1471	return ""
1472	}
1473
1474	itcl::body Rappture::VtkMeshViewer::BuildDownloadPopup { popup command } {
1475	Rappture::Balloon $popup \
1476	-title "[Rappture::filexfer::label downloadWord] as..."
1477	set inner [$popup component inner]
1478	label $inner.summary -text "" -anchor w
1479	radiobutton $inner.vtk_button -text "VTK data file" \
1480	-variable [itcl::scope _downloadPopup(format)] \
1481	-font "Helvetica 9 " \
1482	-value vtk
1483	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1484	radiobutton $inner.image_button -text "Image File" \
1485	-variable [itcl::scope _downloadPopup(format)] \
1486	-value image
1487	Rappture::Tooltip::for $inner.image_button \
1488	"Save as digital image."
1489
1490	button $inner.ok -text "Save" \
1491	-highlightthickness 0 -pady 2 -padx 3 \
1492	-command $command \
1493	-compound left \
1494	-image [Rappture::icon download]
1495
1496	button $inner.cancel -text "Cancel" \
1497	-highlightthickness 0 -pady 2 -padx 3 \
1498	-command [list $popup deactivate] \
1499	-compound left \
1500	-image [Rappture::icon cancel]
1501
1502	blt::table $inner \
1503	0,0 $inner.summary -cspan 2 \
1504	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1505	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1506	4,1 $inner.cancel -width .9i -fill y \
1507	4,0 $inner.ok -padx 2 -width .9i -fill y
1508	blt::table configure $inner r3 -height 4
1509	blt::table configure $inner r4 -pady 4
1510	raise $inner.image_button
1511	$inner.vtk_button invoke
1512	return $inner
1513	}
1514
1515	itcl::body Rappture::VtkMeshViewer::SetObjectStyle { dataobj } {
1516	# Parse style string.
1517	set tag $dataobj
1518	set type [$dataobj type]
1519
1520	array set style {
1521	-cloudstyle mesh
1522	-color white
1523	-edgecolor black
1524	-edges 1
1525	-lighting 1
1526	-linewidth 1.0
1527	-opacity 1.0
1528	-outline 0
1529	-visible 1
1530	-wireframe 0
1531	}
1532	if { $dataobj != $_first } {
1533	set style(-wireframe) 1
1534	}
1535	if {$type == "cloud"} {
1536	set style(-cloudstyle) points
1537	set style(-edges) 0
1538	set style(-edgecolor) white
1539	}
1540	array set style [$dataobj hints style]
1541
1542	if {[$dataobj hints color] != ""} {
1543	set style(-color) [$dataobj hints color]
1544	}
1545	SendCmd "outline add $tag"
1546	SendCmd "outline color [Color2RGB $style(-color)] $tag"
1547	SendCmd "outline visible $style(-outline) $tag"
1548	set _settings(-outline) $style(-outline)
1549
1550	SendCmd "polydata add $tag"
1551	SendCmd "polydata visible $style(-visible) $tag"
1552	set _settings(-polydatavisible) $style(-visible)
1553	SendCmd "polydata cloudstyle $style(-cloudstyle) $tag"
1554	SendCmd "polydata edges $style(-edges) $tag"
1555	set _settings(-polydataedges) $style(-edges)
1556	SendCmd "polydata color [Color2RGB $style(-color)] $tag"
1557	SendCmd "polydata lighting $style(-lighting) $tag"
1558	set _settings(-polydatalighting) $style(-lighting)
1559	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1560	SendCmd "polydata linewidth $style(-linewidth) $tag"
1561	SendCmd "polydata opacity $style(-opacity) $tag"
1562	set _settings(-polydataopacity) $style(-opacity)
1563	set _widget(-polydataopacity) [expr 100.0 * $style(-opacity)]
1564	SendCmd "polydata wireframe $style(-wireframe) $tag"
1565	set _settings(-polydatawireframe) $style(-wireframe)
1566	set havePolyData 1
1567	}
1568
1569	itcl::body Rappture::VtkMeshViewer::IsValidObject { dataobj } {
1570	if {[catch {$dataobj isa Rappture::Mesh} valid] != 0 \|\| !$valid} {
1571	return 0
1572	}
1573	return 1
1574	}
1575
1576	itcl::body Rappture::VtkMeshViewer::SetOrientation { side } {
1577	array set positions {
1578	front "1 0 0 0"
1579	back "0 0 1 0"
1580	left "0.707107 0 -0.707107 0"
1581	right "0.707107 0 0.707107 0"
1582	top "0.707107 -0.707107 0 0"
1583	bottom "0.707107 0.707107 0 0"
1584	}
1585	foreach name { -qw -qx -qy -qz } value $positions($side) {
1586	set _view($name) $value
1587	}
1588	set q [ViewToQuaternion]
1589	$_arcball quaternion $q
1590	SendCmd "camera orient $q"
1591	SendCmd "camera reset"
1592	set _view(-xpan) 0
1593	set _view(-ypan) 0
1594	set _view(-zoom) 1.0
1595	}

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