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source: branches/1.6/gui/scripts/vtkmeshviewer.tcl @ 6155

Last change on this file since 6155 was 6155, checked in by ldelgass, 8 years ago
merge viewer cleanups from trunk
File size: 52.1 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkmeshviewer - Vtk mesh viewer
4	#
5	# It connects to the Vtkvis server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2016 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 { args } {
42	Rappture::VisViewer::constructor
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	private variable _width 0
116	private variable _height 0
117	private variable _resizePending 0
118	private variable _rotatePending 0
119	private variable _polydataOpacityPending 0
120	private variable _rotateDelay 150
121	private variable _opacityDelay 150
122
123	private common _downloadPopup; # download options from popup
124	private common _hardcopy
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 {args} {
136	set _serverType "vtkvis"
137
138	#DebugOn
139	EnableWaitDialog 900
140
141	# Rebuild event
142	$_dispatcher register !rebuild
143	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
144
145	# Resize event
146	$_dispatcher register !resize
147	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
148
149	# Rotate event
150	$_dispatcher register !rotate
151	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
152
153	# Polydata opacity event
154	$_dispatcher register !polydataOpacity
155	$_dispatcher dispatch $this !polydataOpacity \
156	"[itcl::code $this SetPolydataOpacity]; list"
157	#
158	# Populate parser with commands handle incoming requests
159	#
160	$_parser alias image [itcl::code $this ReceiveImage]
161	$_parser alias dataset [itcl::code $this ReceiveDataset]
162
163	# Initialize the view to some default parameters.
164	array set _view {
165	-ortho 0
166	-qw 0.853553
167	-qx -0.353553
168	-qy 0.353553
169	-qz 0.146447
170	-xpan 0
171	-ypan 0
172	-zoom 1.0
173	}
174	set _arcball [blt::arcball create 100 100]
175	$_arcball quaternion [ViewToQuaternion]
176
177	array set _settings {
178	-axesvisible 1
179	-axislabels 1
180	-axisminorticks 1
181	-outline 0
182	-polydataedges 0
183	-polydatalighting 1
184	-polydataopacity 1.0
185	-polydatavisible 1
186	-polydatawireframe 0
187	-xgrid 0
188	-ygrid 0
189	-zgrid 0
190	}
191	array set _widget {
192	-polydataopacity 100
193	}
194	itk_component add view {
195	canvas $itk_component(plotarea).view \
196	-highlightthickness 0 -borderwidth 0
197	} {
198	usual
199	ignore -highlightthickness -borderwidth -background
200	}
201
202	itk_component add fieldmenu {
203	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
204	-tearoff 0
205	} {
206	usual
207	ignore -background -foreground -relief -tearoff
208	}
209
210	set c $itk_component(view)
211	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
212	bind $c <4> [itcl::code $this Zoom in 0.25]
213	bind $c <5> [itcl::code $this Zoom out 0.25]
214	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
215	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
216	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
217	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
218	bind $c <Enter> "focus %W"
219	bind $c <Control-F1> [itcl::code $this ToggleConsole]
220
221	# Fix the scrollregion in case we go off screen
222	$c configure -scrollregion [$c bbox all]
223
224	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
225	set _map(cwidth) -1
226	set _map(cheight) -1
227	set _map(zoom) 1.0
228	set _map(original) ""
229
230	set f [$itk_component(main) component controls]
231	itk_component add reset {
232	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
233	-highlightthickness 0 \
234	-image [Rappture::icon reset-view] \
235	-command [itcl::code $this Zoom reset]
236	} {
237	usual
238	ignore -highlightthickness
239	}
240	pack $itk_component(reset) -side top -padx 2 -pady 2
241	Rappture::Tooltip::for $itk_component(reset) \
242	"Reset the view to the default zoom level"
243
244	itk_component add zoomin {
245	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
246	-highlightthickness 0 \
247	-image [Rappture::icon zoom-in] \
248	-command [itcl::code $this Zoom in]
249	} {
250	usual
251	ignore -highlightthickness
252	}
253	pack $itk_component(zoomin) -side top -padx 2 -pady 2
254	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
255
256	itk_component add zoomout {
257	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
258	-highlightthickness 0 \
259	-image [Rappture::icon zoom-out] \
260	-command [itcl::code $this Zoom out]
261	} {
262	usual
263	ignore -highlightthickness
264	}
265	pack $itk_component(zoomout) -side top -padx 2 -pady 2
266	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
267
268	BuildPolydataTab
269	BuildAxisTab
270	BuildCameraTab
271
272	# Hack around the Tk panewindow. The problem is that the requested
273	# size of the 3d view isn't set until an image is retrieved from
274	# the server. So the panewindow uses the tiny size.
275	set w 10000
276	pack forget $itk_component(view)
277	blt::table $itk_component(plotarea) \
278	0,0 $itk_component(view) -fill both -reqwidth $w
279	blt::table configure $itk_component(plotarea) c1 -resize none
280
281	# Bindings for rotation via mouse
282	bind $itk_component(view) <ButtonPress-1> \
283	[itcl::code $this Rotate click %x %y]
284	bind $itk_component(view) <B1-Motion> \
285	[itcl::code $this Rotate drag %x %y]
286	bind $itk_component(view) <ButtonRelease-1> \
287	[itcl::code $this Rotate release %x %y]
288
289	# Bindings for panning via mouse
290	bind $itk_component(view) <ButtonPress-2> \
291	[itcl::code $this Pan click %x %y]
292	bind $itk_component(view) <B2-Motion> \
293	[itcl::code $this Pan drag %x %y]
294	bind $itk_component(view) <ButtonRelease-2> \
295	[itcl::code $this Pan release %x %y]
296
297	#bind $itk_component(view) <ButtonRelease-3> \
298	# [itcl::code $this Pick %x %y]
299
300	# Bindings for panning via keyboard
301	bind $itk_component(view) <KeyPress-Left> \
302	[itcl::code $this Pan set -10 0]
303	bind $itk_component(view) <KeyPress-Right> \
304	[itcl::code $this Pan set 10 0]
305	bind $itk_component(view) <KeyPress-Up> \
306	[itcl::code $this Pan set 0 -10]
307	bind $itk_component(view) <KeyPress-Down> \
308	[itcl::code $this Pan set 0 10]
309	bind $itk_component(view) <Shift-KeyPress-Left> \
310	[itcl::code $this Pan set -2 0]
311	bind $itk_component(view) <Shift-KeyPress-Right> \
312	[itcl::code $this Pan set 2 0]
313	bind $itk_component(view) <Shift-KeyPress-Up> \
314	[itcl::code $this Pan set 0 -2]
315	bind $itk_component(view) <Shift-KeyPress-Down> \
316	[itcl::code $this Pan set 0 2]
317
318	# Bindings for zoom via keyboard
319	bind $itk_component(view) <KeyPress-Prior> \
320	[itcl::code $this Zoom out]
321	bind $itk_component(view) <KeyPress-Next> \
322	[itcl::code $this Zoom in]
323
324	bind $itk_component(view) <Enter> "focus $itk_component(view)"
325
326	if {[string equal "x11" [tk windowingsystem]]} {
327	# Bindings for zoom via mouse
328	bind $itk_component(view) <4> [itcl::code $this Zoom out]
329	bind $itk_component(view) <5> [itcl::code $this Zoom in]
330	}
331
332	set _image(download) [image create photo]
333
334	eval itk_initialize $args
335
336	Connect
337	}
338
339	# ----------------------------------------------------------------------
340	# DESTRUCTOR
341	# ----------------------------------------------------------------------
342	itcl::body Rappture::VtkMeshViewer::destructor {} {
343	Disconnect
344	$_dispatcher cancel !rebuild
345	$_dispatcher cancel !resize
346	$_dispatcher cancel !rotate
347	image delete $_image(plot)
348	image delete $_image(download)
349	catch { blt::arcball destroy $_arcball }
350	}
351
352	itcl::body Rappture::VtkMeshViewer::DoResize {} {
353	if { $_width < 2 } {
354	set _width 500
355	}
356	if { $_height < 2 } {
357	set _height 500
358	}
359	set _start [clock clicks -milliseconds]
360	SendCmd "screen size $_width $_height"
361
362	set _resizePending 0
363	}
364
365	itcl::body Rappture::VtkMeshViewer::DoRotate {} {
366	SendCmd "camera orient [ViewToQuaternion]"
367	set _rotatePending 0
368	}
369
370	itcl::body Rappture::VtkMeshViewer::EventuallyResize { w h } {
371	set _width $w
372	set _height $h
373	$_arcball resize $w $h
374	if { !$_resizePending } {
375	set _resizePending 1
376	$_dispatcher event -after 200 !resize
377	}
378	}
379
380	itcl::body Rappture::VtkMeshViewer::EventuallyRotate { q } {
381	QuaternionToView $q
382	if { !$_rotatePending } {
383	set _rotatePending 1
384	$_dispatcher event -after $_rotateDelay !rotate
385	}
386	}
387
388	itcl::body Rappture::VtkMeshViewer::SetPolydataOpacity {} {
389	set _polydataOpacityPending 0
390	set val $_settings(-polydataopacity)
391	SendCmd "polydata opacity $val"
392	}
393
394	itcl::body Rappture::VtkMeshViewer::EventuallySetPolydataOpacity {} {
395	if { !$_polydataOpacityPending } {
396	set _polydataOpacityPending 1
397	$_dispatcher event -after $_opacityDelay !polydataOpacity
398	}
399	}
400
401	# ----------------------------------------------------------------------
402	# USAGE: add <dataobj> ?<settings>?
403	#
404	# Clients use this to add a data object to the plot. The optional
405	# <settings> are used to configure the plot. Allowed settings are
406	# -color, -brightness, -width, -linestyle, and -raise.
407	# ----------------------------------------------------------------------
408	itcl::body Rappture::VtkMeshViewer::add {dataobj {settings ""}} {
409	array set params {
410	-color auto
411	-width 1
412	-linestyle solid
413	-brightness 0
414	-raise 0
415	-description ""
416	-param ""
417	-type ""
418	}
419	array set params $settings
420	set params(-description) ""
421	set params(-param) ""
422	array set params $settings
423
424	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
425	# can't handle -autocolors yet
426	set params(-color) black
427	}
428	set pos [lsearch -exact $_dlist $dataobj]
429	if {$pos < 0} {
430	lappend _dlist $dataobj
431	}
432	set _obj2ovride($dataobj-color) $params(-color)
433	set _obj2ovride($dataobj-width) $params(-width)
434	set _obj2ovride($dataobj-raise) $params(-raise)
435	$_dispatcher event -idle !rebuild
436	}
437
438	# ----------------------------------------------------------------------
439	# USAGE: delete ?<dataobj1> <dataobj2> ...?
440	#
441	# Clients use this to delete a dataobj from the plot. If no dataobjs
442	# are specified, then all dataobjs are deleted. No data objects are
443	# deleted. They are only removed from the display list.
444	# ----------------------------------------------------------------------
445	itcl::body Rappture::VtkMeshViewer::delete {args} {
446	if { [llength $args] == 0} {
447	set args $_dlist
448	}
449	# Delete all specified dataobjs
450	set changed 0
451	foreach dataobj $args {
452	set pos [lsearch -exact $_dlist $dataobj]
453	if { $pos < 0 } {
454	continue; # Don't know anything about it.
455	}
456	# Remove it from the dataobj list.
457	set _dlist [lreplace $_dlist $pos $pos]
458	array unset _obj2ovride $dataobj-*
459	set changed 1
460	}
461	# If anything changed, then rebuild the plot
462	if { $changed } {
463	$_dispatcher event -idle !rebuild
464	}
465	}
466
467	# ----------------------------------------------------------------------
468	# USAGE: get ?-objects?
469	# USAGE: get ?-visible?
470	# USAGE: get ?-image view?
471	#
472	# Clients use this to query the list of objects being plotted, in
473	# order from bottom to top of this result. The optional "-image"
474	# flag can also request the internal images being shown.
475	# ----------------------------------------------------------------------
476	itcl::body Rappture::VtkMeshViewer::get {args} {
477	if {[llength $args] == 0} {
478	set args "-objects"
479	}
480
481	set op [lindex $args 0]
482	switch -- $op {
483	"-objects" {
484	# put the dataobj list in order according to -raise options
485	set dlist {}
486	foreach dataobj $_dlist {
487	if { ![IsValidObject $dataobj] } {
488	continue
489	}
490	if {[info exists _obj2ovride($dataobj-raise)] &&
491	$_obj2ovride($dataobj-raise)} {
492	set dlist [linsert $dlist 0 $dataobj]
493	} else {
494	lappend dlist $dataobj
495	}
496	}
497	return $dlist
498	}
499	"-visible" {
500	set dlist {}
501	foreach dataobj $_dlist {
502	if { ![IsValidObject $dataobj] } {
503	continue
504	}
505	if { ![info exists _obj2ovride($dataobj-raise)] } {
506	# No setting indicates that the object isn't visible.
507	continue
508	}
509	# Otherwise use the -raise parameter to put the object to
510	# the front of the list.
511	if { $_obj2ovride($dataobj-raise) } {
512	set dlist [linsert $dlist 0 $dataobj]
513	} else {
514	lappend dlist $dataobj
515	}
516	}
517	return $dlist
518	}
519	-image {
520	if {[llength $args] != 2} {
521	error "wrong # args: should be \"get -image view\""
522	}
523	switch -- [lindex $args end] {
524	view {
525	return $_image(plot)
526	}
527	default {
528	error "bad image name \"[lindex $args end]\": should be view"
529	}
530	}
531	}
532	default {
533	error "bad option \"$op\": should be -objects or -image"
534	}
535	}
536	}
537
538	# ----------------------------------------------------------------------
539	# USAGE: scale ?<data1> <data2> ...?
540	#
541	# Sets the default limits for the overall plot according to the
542	# limits of the data for all of the given <data> objects. This
543	# accounts for all objects--even those not showing on the screen.
544	# Because of this, the limits are appropriate for all objects as
545	# the user scans through data in the ResultSet viewer.
546	# ----------------------------------------------------------------------
547	itcl::body Rappture::VtkMeshViewer::scale {args} {
548	foreach dataobj $args {
549	if { ![$dataobj isvalid] } {
550	continue; # Object doesn't contain valid data.
551	}
552	foreach axis { x y z } {
553	set lim [$dataobj limits $axis]
554	if { ![info exists _limits($axis)] } {
555	set _limits($axis) $lim
556	continue
557	}
558	foreach {min max} $lim break
559	foreach {amin amax} $_limits($axis) break
560	if { $amin > $min } {
561	set amin $min
562	}
563	if { $amax < $max } {
564	set amax $max
565	}
566	set _limits($axis) [list $amin $amax]
567	}
568	}
569	}
570
571	# ----------------------------------------------------------------------
572	# USAGE: download coming
573	# USAGE: download controls <downloadCommand>
574	# USAGE: download now
575	#
576	# Clients use this method to create a downloadable representation
577	# of the plot. Returns a list of the form {ext string}, where
578	# "ext" is the file extension (indicating the type of data) and
579	# "string" is the data itself.
580	# ----------------------------------------------------------------------
581	itcl::body Rappture::VtkMeshViewer::download {option args} {
582	switch $option {
583	coming {
584	if {[catch {
585	blt::winop snap $itk_component(plotarea) $_image(download)
586	}]} {
587	$_image(download) configure -width 1 -height 1
588	$_image(download) put #000000
589	}
590	}
591	controls {
592	set popup .vtkviewerdownload
593	if { ![winfo exists .vtkviewerdownload] } {
594	set inner [BuildDownloadPopup $popup [lindex $args 0]]
595	} else {
596	set inner [$popup component inner]
597	}
598	set _downloadPopup(image_controls) $inner.image_frame
599	set num [llength [get]]
600	set num [expr {($num == 1) ? "1 result" : "$num results"}]
601	set word [Rappture::filexfer::label downloadWord]
602	$inner.summary configure -text "$word $num in the following format:"
603	update idletasks ;# Fix initial sizes
604	return $popup
605	}
606	now {
607	set popup .vtkviewerdownload
608	if {[winfo exists .vtkviewerdownload]} {
609	$popup deactivate
610	}
611	switch -- $_downloadPopup(format) {
612	"image" {
613	return [$this GetImage [lindex $args 0]]
614	}
615	"vtk" {
616	return [$this GetVtkData [lindex $args 0]]
617	}
618	}
619	return ""
620	}
621	default {
622	error "bad option \"$option\": should be coming, controls, now"
623	}
624	}
625	}
626
627	# ----------------------------------------------------------------------
628	# USAGE: Connect ?<host:port>,<host:port>...?
629	#
630	# Clients use this method to establish a connection to a new
631	# server, or to reestablish a connection to the previous server.
632	# Any existing connection is automatically closed.
633	# ----------------------------------------------------------------------
634	itcl::body Rappture::VtkMeshViewer::Connect {} {
635	global readyForNextFrame
636	set readyForNextFrame 1
637	set _hosts [GetServerList "vtkvis"]
638	if { "" == $_hosts } {
639	return 0
640	}
641	set _reset 1
642	set result [VisViewer::Connect $_hosts]
643	if { $result } {
644	if { $_reportClientInfo } {
645	# Tell the server the viewer, hub, user and session.
646	# Do this immediately on connect before buffering any commands
647	global env
648
649	set info {}
650	set user "???"
651	if { [info exists env(USER)] } {
652	set user $env(USER)
653	}
654	set session "???"
655	if { [info exists env(SESSION)] } {
656	set session $env(SESSION)
657	}
658	lappend info "version" "$Rappture::version"
659	lappend info "build" "$Rappture::build"
660	lappend info "svnurl" "$Rappture::svnurl"
661	lappend info "installdir" "$Rappture::installdir"
662	lappend info "hub" [exec hostname]
663	lappend info "client" "vtkmeshviewer"
664	lappend info "user" $user
665	lappend info "session" $session
666	SendCmd "clientinfo [list $info]"
667	}
668
669	set w [winfo width $itk_component(view)]
670	set h [winfo height $itk_component(view)]
671	EventuallyResize $w $h
672	}
673	return $result
674	}
675
676	#
677	# isconnected --
678	#
679	# Indicates if we are currently connected to the visualization server.
680	#
681	itcl::body Rappture::VtkMeshViewer::isconnected {} {
682	return [VisViewer::IsConnected]
683	}
684
685	#
686	# disconnect --
687	#
688	itcl::body Rappture::VtkMeshViewer::disconnect {} {
689	Disconnect
690	set _reset 1
691	}
692
693	#
694	# Disconnect --
695	#
696	# Clients use this method to disconnect from the current rendering 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 {"" != $_first} {
862	foreach axis { x y z } {
863	set label [$_first label ${axis}]
864	if { $label != "" } {
865	SendCmd [list axis name $axis $label]
866	}
867	set units [$_first units ${axis}]
868	if { $units != "" } {
869	SendCmd [list axis units $axis $units]
870	}
871	}
872	}
873	InitSettings -outline
874	if { $_reset } {
875	# These are settings that rely on a dataset being loaded.
876	InitSettings -polydataedges -polydatalighting -polydataopacity \
877	-polydatavisible -polydatawireframe
878
879	#SendCmd "axis lformat all %g"
880
881	$_arcball quaternion [ViewToQuaternion]
882	SendCmd "camera reset"
883	if { $_view(-ortho)} {
884	SendCmd "camera mode ortho"
885	} else {
886	SendCmd "camera mode persp"
887	}
888	DoRotate
889	PanCamera
890	Zoom reset
891	}
892
893	set _reset 0
894	global readyForNextFrame
895	set readyForNextFrame 0; # Don't advance to the next frame
896	# until we get an image.
897
898	# Actually write the commands to the server socket. If it fails, we don't
899	# care. We're finished here.
900	blt::busy hold $itk_component(hull)
901	StopBufferingCommands
902	blt::busy release $itk_component(hull)
903	}
904
905	# ----------------------------------------------------------------------
906	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
907	#
908	# Returns a list of server IDs for the current datasets being displayed. This
909	# is normally a single ID, but it might be a list of IDs if the current data
910	# object has multiple components.
911	# ----------------------------------------------------------------------
912	itcl::body Rappture::VtkMeshViewer::CurrentDatasets {args} {
913	set flag [lindex $args 0]
914	switch -- $flag {
915	"-all" {
916	if { [llength $args] > 1 } {
917	error "CurrentDatasets: can't specify dataobj after \"-all\""
918	}
919	set dlist [get -objects]
920	}
921	"-visible" {
922	if { [llength $args] > 1 } {
923	set dlist {}
924	set args [lrange $args 1 end]
925	foreach dataobj $args {
926	if { [info exists _obj2ovride($dataobj-raise)] } {
927	lappend dlist $dataobj
928	}
929	}
930	} else {
931	set dlist [get -visible]
932	}
933	}
934	default {
935	set dlist $args
936	}
937	}
938	set rlist ""
939	foreach tag $dlist {
940	if { [info exists _datasets($tag)] && $_datasets($tag) } {
941	lappend rlist $tag
942	}
943	}
944	return $rlist
945	}
946
947	# ----------------------------------------------------------------------
948	# USAGE: Zoom in
949	# USAGE: Zoom out
950	# USAGE: Zoom reset
951	#
952	# Called automatically when the user clicks on one of the zoom
953	# controls for this widget. Changes the zoom for the current view.
954	# ----------------------------------------------------------------------
955	itcl::body Rappture::VtkMeshViewer::Zoom {option} {
956	switch -- $option {
957	"in" {
958	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
959	SendCmd "camera zoom $_view(-zoom)"
960	}
961	"out" {
962	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
963	SendCmd "camera zoom $_view(-zoom)"
964	}
965	"reset" {
966	array set _view {
967	-qw 0.853553
968	-qx -0.353553
969	-qy 0.353553
970	-qz 0.146447
971	-xpan 0
972	-ypan 0
973	-zoom 1.0
974	}
975	if { $_first != "" } {
976	set location [$_first hints camera]
977	if { $location != "" } {
978	array set _view $location
979	}
980	}
981	$_arcball quaternion [ViewToQuaternion]
982	DoRotate
983	SendCmd "camera reset"
984	}
985	}
986	}
987
988	itcl::body Rappture::VtkMeshViewer::PanCamera {} {
989	set x $_view(-xpan)
990	set y $_view(-ypan)
991	SendCmd "camera pan $x $y"
992	}
993
994	# ----------------------------------------------------------------------
995	# USAGE: Rotate click <x> <y>
996	# USAGE: Rotate drag <x> <y>
997	# USAGE: Rotate release <x> <y>
998	#
999	# Called automatically when the user clicks/drags/releases in the
1000	# plot area. Moves the plot according to the user's actions.
1001	# ----------------------------------------------------------------------
1002	itcl::body Rappture::VtkMeshViewer::Rotate {option x y} {
1003	switch -- $option {
1004	"click" {
1005	$itk_component(view) configure -cursor fleur
1006	set _click(x) $x
1007	set _click(y) $y
1008	}
1009	"drag" {
1010	if {[array size _click] == 0} {
1011	Rotate click $x $y
1012	} else {
1013	set w [winfo width $itk_component(view)]
1014	set h [winfo height $itk_component(view)]
1015	if {$w <= 0 \|\| $h <= 0} {
1016	return
1017	}
1018
1019	if {[catch {
1020	# this fails sometimes for no apparent reason
1021	set dx [expr {double($x-$_click(x))/$w}]
1022	set dy [expr {double($y-$_click(y))/$h}]
1023	}]} {
1024	return
1025	}
1026	if { $dx == 0 && $dy == 0 } {
1027	return
1028	}
1029	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1030	EventuallyRotate $q
1031	set _click(x) $x
1032	set _click(y) $y
1033	}
1034	}
1035	"release" {
1036	Rotate drag $x $y
1037	$itk_component(view) configure -cursor ""
1038	catch {unset _click}
1039	}
1040	default {
1041	error "bad option \"$option\": should be click, drag, release"
1042	}
1043	}
1044	}
1045
1046	itcl::body Rappture::VtkMeshViewer::Pick {x y} {
1047	foreach tag [CurrentDatasets -visible] {
1048	SendCmd "dataset getscalar pixel $x $y $tag"
1049	}
1050	}
1051
1052	# ----------------------------------------------------------------------
1053	# USAGE: $this Pan click x y
1054	# $this Pan drag x y
1055	# $this Pan release x y
1056	#
1057	# Called automatically when the user clicks on one of the zoom
1058	# controls for this widget. Changes the zoom for the current view.
1059	# ----------------------------------------------------------------------
1060	itcl::body Rappture::VtkMeshViewer::Pan {option x y} {
1061	switch -- $option {
1062	"set" {
1063	set w [winfo width $itk_component(view)]
1064	set h [winfo height $itk_component(view)]
1065	set x [expr $x / double($w)]
1066	set y [expr $y / double($h)]
1067	set _view(-xpan) [expr $_view(-xpan) + $x]
1068	set _view(-ypan) [expr $_view(-ypan) + $y]
1069	PanCamera
1070	return
1071	}
1072	"click" {
1073	set _click(x) $x
1074	set _click(y) $y
1075	$itk_component(view) configure -cursor hand1
1076	}
1077	"drag" {
1078	if { ![info exists _click(x)] } {
1079	set _click(x) $x
1080	}
1081	if { ![info exists _click(y)] } {
1082	set _click(y) $y
1083	}
1084	set w [winfo width $itk_component(view)]
1085	set h [winfo height $itk_component(view)]
1086	set dx [expr ($_click(x) - $x)/double($w)]
1087	set dy [expr ($_click(y) - $y)/double($h)]
1088	set _click(x) $x
1089	set _click(y) $y
1090	set _view(-xpan) [expr $_view(-xpan) - $dx]
1091	set _view(-ypan) [expr $_view(-ypan) - $dy]
1092	PanCamera
1093	}
1094	"release" {
1095	Pan drag $x $y
1096	$itk_component(view) configure -cursor ""
1097	}
1098	default {
1099	error "unknown option \"$option\": should set, click, drag, or release"
1100	}
1101	}
1102	}
1103
1104	# ----------------------------------------------------------------------
1105	# USAGE: InitSettings <what> ?<value>?
1106	#
1107	# Used internally to update rendering settings whenever parameters
1108	# change in the popup settings panel. Sends the new settings off
1109	# to the back end.
1110	# ----------------------------------------------------------------------
1111	itcl::body Rappture::VtkMeshViewer::InitSettings { args } {
1112	foreach setting $args {
1113	AdjustSetting $setting
1114	}
1115	}
1116
1117	#
1118	# AdjustSetting --
1119	#
1120	# Changes/updates a specific setting in the widget. There are
1121	# usually user-setable option. Commands are sent to the render
1122	# server.
1123	#
1124	itcl::body Rappture::VtkMeshViewer::AdjustSetting {what {value ""}} {
1125	if { ![isconnected] } {
1126	return
1127	}
1128	switch -- $what {
1129	"-outline" {
1130	set bool $_settings($what)
1131	# Only display a outline for the currently visible sets.
1132	SendCmd "outline visible 0"
1133	foreach dataset [CurrentDatasets -visible] {
1134	SendCmd "outline visible $bool $dataset"
1135	}
1136	}
1137	"-polydataopacity" {
1138	set _settings($what) [expr $_widget($what) * 0.01]
1139	EventuallySetPolydataOpacity
1140	}
1141	"-polydatawireframe" {
1142	set bool $_settings($what)
1143	SendCmd "polydata wireframe $bool"
1144	}
1145	"-polydatavisible" {
1146	set bool $_settings($what)
1147	# Only change visibility of data sets marked "visible".
1148	foreach dataset [CurrentDatasets -visible] {
1149	SendCmd "polydata visible $bool $dataset"
1150	}
1151	}
1152	"-polydatalighting" {
1153	set bool $_settings($what)
1154	SendCmd "polydata lighting $bool"
1155	}
1156	"-polydataedges" {
1157	set bool $_settings($what)
1158	SendCmd "polydata edges $bool"
1159	}
1160	"-axesvisible" {
1161	set bool $_settings($what)
1162	SendCmd "axis visible all $bool"
1163	}
1164	"-axislabels" {
1165	set bool $_settings($what)
1166	SendCmd "axis labels all $bool"
1167	}
1168	"-axisminorticks" {
1169	set bool $_settings($what)
1170	SendCmd "axis minticks all $bool"
1171	}
1172	"-xgrid" {
1173	set bool $_settings($what)
1174	SendCmd "axis grid x $bool"
1175	}
1176	"-ygrid" {
1177	set bool $_settings($what)
1178	SendCmd "axis grid y $bool"
1179	}
1180	"-zgrid" {
1181	set bool $_settings($what)
1182	SendCmd "axis grid z $bool"
1183	}
1184	"-axismode" {
1185	set mode [$itk_component(axismode) value]
1186	set mode [$itk_component(axismode) translate $mode]
1187	SendCmd "axis flymode $mode"
1188	}
1189	default {
1190	error "don't know how to fix $what"
1191	}
1192	}
1193	}
1194
1195	# ----------------------------------------------------------------------
1196	# CONFIGURATION OPTION: -plotbackground
1197	# ----------------------------------------------------------------------
1198	itcl::configbody Rappture::VtkMeshViewer::plotbackground {
1199	if { [isconnected] } {
1200	set rgb [Color2RGB $itk_option(-plotbackground)]
1201	SendCmd "screen bgcolor $rgb"
1202	}
1203	}
1204
1205	# ----------------------------------------------------------------------
1206	# CONFIGURATION OPTION: -plotforeground
1207	# ----------------------------------------------------------------------
1208	itcl::configbody Rappture::VtkMeshViewer::plotforeground {
1209	if { [isconnected] } {
1210	set rgb [Color2RGB $itk_option(-plotforeground)]
1211	SendCmd "axis color all $rgb"
1212	SendCmd "outline color $rgb"
1213	}
1214	}
1215
1216	itcl::body Rappture::VtkMeshViewer::BuildPolydataTab {} {
1217
1218	set fg [option get $itk_component(hull) font Font]
1219	#set bfg [option get $itk_component(hull) boldFont Font]
1220
1221	set inner [$itk_component(main) insert end \
1222	-title "Mesh Settings" \
1223	-icon [Rappture::icon mesh]]
1224	$inner configure -borderwidth 4
1225
1226	checkbutton $inner.mesh \
1227	-text "Show Mesh" \
1228	-variable [itcl::scope _settings(-polydatavisible)] \
1229	-command [itcl::code $this AdjustSetting -polydatavisible] \
1230	-font "Arial 9" -anchor w
1231
1232	checkbutton $inner.outline \
1233	-text "Show Outline" \
1234	-variable [itcl::scope _settings(-outline)] \
1235	-command [itcl::code $this AdjustSetting -outline] \
1236	-font "Arial 9" -anchor w
1237
1238	checkbutton $inner.wireframe \
1239	-text "Show Wireframe" \
1240	-variable [itcl::scope _settings(-polydatawireframe)] \
1241	-command [itcl::code $this AdjustSetting -polydatawireframe] \
1242	-font "Arial 9" -anchor w
1243
1244	checkbutton $inner.lighting \
1245	-text "Enable Lighting" \
1246	-variable [itcl::scope _settings(-polydatalighting)] \
1247	-command [itcl::code $this AdjustSetting -polydatalighting] \
1248	-font "Arial 9" -anchor w
1249
1250	checkbutton $inner.edges \
1251	-text "Show Edges" \
1252	-variable [itcl::scope _settings(-polydataedges)] \
1253	-command [itcl::code $this AdjustSetting -polydataedges] \
1254	-font "Arial 9" -anchor w
1255
1256	itk_component add field_l {
1257	label $inner.field_l -text "Field" -font "Arial 9"
1258	} {
1259	ignore -font
1260	}
1261	itk_component add field {
1262	Rappture::Combobox $inner.field -width 10 -editable 0
1263	}
1264	bind $inner.field <<Value>> \
1265	[itcl::code $this AdjustSetting -field]
1266
1267	label $inner.opacity_l -text "Opacity" -font "Arial 9" -anchor w
1268	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1269	-variable [itcl::scope _widget(-polydataopacity)] \
1270	-width 10 \
1271	-showvalue off \
1272	-command [itcl::code $this AdjustSetting -polydataopacity]
1273	$inner.opacity set [expr $_settings(-polydataopacity) * 100.0]
1274
1275	blt::table $inner \
1276	0,0 $inner.mesh -cspan 2 -anchor w -pady 2 \
1277	1,0 $inner.outline -cspan 2 -anchor w -pady 2 \
1278	2,0 $inner.wireframe -cspan 2 -anchor w -pady 2 \
1279	3,0 $inner.lighting -cspan 2 -anchor w -pady 2 \
1280	4,0 $inner.edges -cspan 2 -anchor w -pady 2 \
1281	5,0 $inner.opacity_l -anchor w -pady 2 \
1282	5,1 $inner.opacity -fill x -pady 2
1283
1284	blt::table configure $inner r* c* -resize none
1285	blt::table configure $inner r7 c1 -resize expand
1286	}
1287
1288	itcl::body Rappture::VtkMeshViewer::BuildAxisTab {} {
1289
1290	set fg [option get $itk_component(hull) font Font]
1291	#set bfg [option get $itk_component(hull) boldFont Font]
1292
1293	set inner [$itk_component(main) insert end \
1294	-title "Axis Settings" \
1295	-icon [Rappture::icon axis2]]
1296	$inner configure -borderwidth 4
1297
1298	checkbutton $inner.visible \
1299	-text "Axes" \
1300	-variable [itcl::scope _settings(-axesvisible)] \
1301	-command [itcl::code $this AdjustSetting -axesvisible] \
1302	-font "Arial 9"
1303
1304	checkbutton $inner.labels \
1305	-text "Axis Labels" \
1306	-variable [itcl::scope _settings(-axislabels)] \
1307	-command [itcl::code $this AdjustSetting -axislabels] \
1308	-font "Arial 9"
1309	label $inner.grid_l -text "Grid" -font "Arial 9"
1310	checkbutton $inner.xgrid \
1311	-text "X" \
1312	-variable [itcl::scope _settings(-xgrid)] \
1313	-command [itcl::code $this AdjustSetting -xgrid] \
1314	-font "Arial 9"
1315	checkbutton $inner.ygrid \
1316	-text "Y" \
1317	-variable [itcl::scope _settings(-ygrid)] \
1318	-command [itcl::code $this AdjustSetting -ygrid] \
1319	-font "Arial 9"
1320	checkbutton $inner.zgrid \
1321	-text "Z" \
1322	-variable [itcl::scope _settings(-zgrid)] \
1323	-command [itcl::code $this AdjustSetting -zgrid] \
1324	-font "Arial 9"
1325	checkbutton $inner.minorticks \
1326	-text "Minor Ticks" \
1327	-variable [itcl::scope _settings(-axisminorticks)] \
1328	-command [itcl::code $this AdjustSetting -axisminorticks] \
1329	-font "Arial 9"
1330
1331	label $inner.mode_l -text "Mode" -font "Arial 9"
1332
1333	itk_component add axismode {
1334	Rappture::Combobox $inner.mode -width 10 -editable 0
1335	}
1336	$inner.mode choices insert end \
1337	"static_triad" "static" \
1338	"closest_triad" "closest" \
1339	"furthest_triad" "farthest" \
1340	"outer_edges" "outer"
1341	$itk_component(axismode) value "static"
1342	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1343
1344	blt::table $inner \
1345	0,0 $inner.visible -anchor w -cspan 4 \
1346	1,0 $inner.labels -anchor w -cspan 4 \
1347	2,0 $inner.minorticks -anchor w -cspan 4 \
1348	4,0 $inner.grid_l -anchor w \
1349	4,1 $inner.xgrid -anchor w \
1350	4,2 $inner.ygrid -anchor w \
1351	4,3 $inner.zgrid -anchor w \
1352	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1353	5,1 $inner.mode -fill x -cspan 3
1354
1355	blt::table configure $inner r* c* -resize none
1356	blt::table configure $inner r7 c6 -resize expand
1357	blt::table configure $inner r3 -height 0.125i
1358	}
1359
1360	itcl::body Rappture::VtkMeshViewer::BuildCameraTab {} {
1361	set inner [$itk_component(main) insert end \
1362	-title "Camera Settings" \
1363	-icon [Rappture::icon camera]]
1364	$inner configure -borderwidth 4
1365
1366	label $inner.view_l -text "view" -font "Arial 9"
1367	set f [frame $inner.view]
1368	foreach side { front back left right top bottom } {
1369	button $f.$side -image [Rappture::icon view$side] \
1370	-command [itcl::code $this SetOrientation $side]
1371	Rappture::Tooltip::for $f.$side "Change the view to $side"
1372	pack $f.$side -side left
1373	}
1374
1375	blt::table $inner \
1376	0,0 $inner.view_l -anchor e -pady 2 \
1377	0,1 $inner.view -anchor w -pady 2
1378	blt::table configure $inner r0 -resize none
1379
1380	set labels { qx qy qz qw xpan ypan zoom }
1381	set row 1
1382	foreach tag $labels {
1383	label $inner.${tag}label -text $tag -font "Arial 9"
1384	entry $inner.${tag} -font "Arial 9" -bg white \
1385	-textvariable [itcl::scope _view(-$tag)]
1386	bind $inner.${tag} <Return> \
1387	[itcl::code $this camera set -${tag}]
1388	bind $inner.${tag} <KP_Enter> \
1389	[itcl::code $this camera set -${tag}]
1390	blt::table $inner \
1391	$row,0 $inner.${tag}label -anchor e -pady 2 \
1392	$row,1 $inner.${tag} -anchor w -pady 2
1393	blt::table configure $inner r$row -resize none
1394	incr row
1395	}
1396	checkbutton $inner.ortho \
1397	-text "Orthographic Projection" \
1398	-variable [itcl::scope _view(-ortho)] \
1399	-command [itcl::code $this camera set -ortho] \
1400	-font "Arial 9"
1401	blt::table $inner \
1402	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1403	blt::table configure $inner r$row -resize none
1404	incr row
1405
1406	blt::table configure $inner c* -resize none
1407	blt::table configure $inner c2 -resize expand
1408	blt::table configure $inner r$row -resize expand
1409	}
1410
1411	#
1412	# camera --
1413	#
1414	itcl::body Rappture::VtkMeshViewer::camera {option args} {
1415	switch -- $option {
1416	"show" {
1417	puts [array get _view]
1418	}
1419	"set" {
1420	set what [lindex $args 0]
1421	set x $_view($what)
1422	set code [catch { string is double $x } result]
1423	if { $code != 0 \|\| !$result } {
1424	return
1425	}
1426	switch -- $what {
1427	"-ortho" {
1428	if {$_view($what)} {
1429	SendCmd "camera mode ortho"
1430	} else {
1431	SendCmd "camera mode persp"
1432	}
1433	}
1434	"-xpan" - "-ypan" {
1435	PanCamera
1436	}
1437	"-qx" - "-qy" - "-qz" - "-qw" {
1438	set q [ViewToQuaternion]
1439	$_arcball quaternion $q
1440	EventuallyRotate $q
1441	}
1442	"-zoom" {
1443	SendCmd "camera zoom $_view($what)"
1444	}
1445	}
1446	}
1447	}
1448	}
1449
1450	itcl::body Rappture::VtkMeshViewer::GetVtkData { args } {
1451	set bytes ""
1452	foreach dataobj [get] {
1453	set contents [$dataobj vtkdata -full]
1454	append bytes "$contents\n"
1455	}
1456	return [list .vtk $bytes]
1457	}
1458
1459	itcl::body Rappture::VtkMeshViewer::GetImage { args } {
1460	if { [image width $_image(download)] > 0 &&
1461	[image height $_image(download)] > 0 } {
1462	set bytes [$_image(download) data -format "jpeg -quality 100"]
1463	set bytes [Rappture::encoding::decode -as b64 $bytes]
1464	return [list .jpg $bytes]
1465	}
1466	return ""
1467	}
1468
1469	itcl::body Rappture::VtkMeshViewer::BuildDownloadPopup { popup command } {
1470	Rappture::Balloon $popup \
1471	-title "[Rappture::filexfer::label downloadWord] as..."
1472	set inner [$popup component inner]
1473	label $inner.summary -text "" -anchor w
1474	radiobutton $inner.vtk_button -text "VTK data file" \
1475	-variable [itcl::scope _downloadPopup(format)] \
1476	-font "Helvetica 9 " \
1477	-value vtk
1478	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1479	radiobutton $inner.image_button -text "Image File" \
1480	-variable [itcl::scope _downloadPopup(format)] \
1481	-value image
1482	Rappture::Tooltip::for $inner.image_button \
1483	"Save as digital image."
1484
1485	button $inner.ok -text "Save" \
1486	-highlightthickness 0 -pady 2 -padx 3 \
1487	-command $command \
1488	-compound left \
1489	-image [Rappture::icon download]
1490
1491	button $inner.cancel -text "Cancel" \
1492	-highlightthickness 0 -pady 2 -padx 3 \
1493	-command [list $popup deactivate] \
1494	-compound left \
1495	-image [Rappture::icon cancel]
1496
1497	blt::table $inner \
1498	0,0 $inner.summary -cspan 2 \
1499	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1500	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1501	4,1 $inner.cancel -width .9i -fill y \
1502	4,0 $inner.ok -padx 2 -width .9i -fill y
1503	blt::table configure $inner r3 -height 4
1504	blt::table configure $inner r4 -pady 4
1505	raise $inner.image_button
1506	$inner.vtk_button invoke
1507	return $inner
1508	}
1509
1510	itcl::body Rappture::VtkMeshViewer::SetObjectStyle { dataobj } {
1511	# Parse style string.
1512	set tag $dataobj
1513	set type [$dataobj type]
1514
1515	array set style {
1516	-cloudstyle mesh
1517	-color white
1518	-edgecolor black
1519	-edges 1
1520	-lighting 1
1521	-linewidth 1.0
1522	-opacity 1.0
1523	-outline 0
1524	-visible 1
1525	-wireframe 0
1526	}
1527	if {$type == "cloud"} {
1528	set style(-cloudstyle) points
1529	set style(-edges) 0
1530	set style(-edgecolor) white
1531	}
1532	array set style [$dataobj hints style]
1533
1534	if {[$dataobj hints color] != ""} {
1535	set style(-color) [$dataobj hints color]
1536	}
1537	SendCmd "outline add $tag"
1538	SendCmd "outline color [Color2RGB $style(-color)] $tag"
1539	SendCmd "outline visible $style(-outline) $tag"
1540	set _settings(-outline) $style(-outline)
1541
1542	SendCmd "polydata add $tag"
1543	SendCmd "polydata visible $style(-visible) $tag"
1544	set _settings(-polydatavisible) $style(-visible)
1545	SendCmd "polydata cloudstyle $style(-cloudstyle) $tag"
1546	SendCmd "polydata edges $style(-edges) $tag"
1547	set _settings(-polydataedges) $style(-edges)
1548	SendCmd "polydata color [Color2RGB $style(-color)] $tag"
1549	SendCmd "polydata lighting $style(-lighting) $tag"
1550	set _settings(-polydatalighting) $style(-lighting)
1551	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1552	SendCmd "polydata linewidth $style(-linewidth) $tag"
1553	SendCmd "polydata opacity $style(-opacity) $tag"
1554	set _settings(-polydataopacity) $style(-opacity)
1555	set _widget(-polydataopacity) [expr 100.0 * $style(-opacity)]
1556	SendCmd "polydata wireframe $style(-wireframe) $tag"
1557	set _settings(-polydatawireframe) $style(-wireframe)
1558	set havePolyData 1
1559	}
1560
1561	itcl::body Rappture::VtkMeshViewer::IsValidObject { dataobj } {
1562	if {[catch {$dataobj isa Rappture::Mesh} valid] != 0 \|\| !$valid} {
1563	return 0
1564	}
1565	return 1
1566	}
1567
1568	itcl::body Rappture::VtkMeshViewer::SetOrientation { side } {
1569	array set positions {
1570	front "1 0 0 0"
1571	back "0 0 1 0"
1572	left "0.707107 0 -0.707107 0"
1573	right "0.707107 0 0.707107 0"
1574	top "0.707107 -0.707107 0 0"
1575	bottom "0.707107 0.707107 0 0"
1576	}
1577	foreach name { -qw -qx -qy -qz } value $positions($side) {
1578	set _view($name) $value
1579	}
1580	set q [ViewToQuaternion]
1581	$_arcball quaternion $q
1582	SendCmd "camera orient $q"
1583	SendCmd "camera reset"
1584	set _view(-xpan) 0
1585	set _view(-ypan) 0
1586	set _view(-zoom) 1.0
1587	}

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