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source: branches/1.3/gui/scripts/vtkmeshviewer.tcl @ 4766

Last change on this file since 4766 was 4766, checked in by ldelgass, 9 years ago
merge r4765 from trunk
File size: 54.4 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 Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkMeshViewer.width 4i widgetDefault
19	option add VtkMeshViewercursor crosshair widgetDefault
20	option add *VtkMeshViewer.height 4i widgetDefault
21	option add *VtkMeshViewer.foreground black widgetDefault
22	option add *VtkMeshViewer.controlBackground gray widgetDefault
23	option add *VtkMeshViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkMeshViewer.plotBackground black widgetDefault
25	option add *VtkMeshViewer.plotForeground white widgetDefault
26	option add *VtkMeshViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkMeshViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkMeshViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkMeshViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method limits { dataobj }
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildDownloadPopup { widget command }
70	private method BuildPolydataTab {}
71	private method Connect {}
72	private method CurrentDatasets {args}
73	private method Disconnect {}
74	private method DoResize {}
75	private method DoRotate {}
76	private method EventuallyResize { w h }
77	private method EventuallyRotate { q }
78	private method EventuallySetPolydataOpacity {}
79	private method GetImage { args }
80	private method GetVtkData { args }
81	private method InitSettings { args }
82	private method IsValidObject { dataobj }
83	private method Pan {option x y}
84	private method PanCamera {}
85	private method Pick {x y}
86	private method QuaternionToView { q } {
87	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
88	}
89	private method Rebuild {}
90	private method ReceiveDataset { args }
91	private method ReceiveImage { args }
92	private method Rotate {option x y}
93	private method SetObjectStyle { dataobj }
94	private method SetOrientation { side }
95	private method SetPolydataOpacity {}
96	private method ViewToQuaternion {} {
97	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
98	}
99	private method Zoom {option}
100
101	private variable _arcball ""
102	private variable _dlist ""; # list of data objects
103	private variable _obj2datasets
104	private variable _obj2ovride; # maps dataobj => style override
105	private variable _datasets; # contains all the dataobj-component
106	# datasets in the server
107	private variable _dataset2style; # maps dataobj-component to transfunc
108	private variable _style2datasets; # maps tf back to list of
109	# dataobj-components using the tf.
110	private variable _click; # info used for rotate operations
111	private variable _limits; # autoscale min/max for all axes
112	private variable _view; # view params for 3D view
113	private variable _settings
114	private variable _widget
115	private variable _style; # Array of current component styles.
116	private variable _initialStyle; # Array of initial component styles.
117	private variable _reset 1; # Indicates that server was reset and
118	# needs to be reinitialized.
119
120	private variable _first ""; # This is the topmost dataset.
121	private variable _start 0
122	private variable _title ""
123
124	common _downloadPopup; # download options from popup
125	private common _hardcopy
126	private variable _width 0
127	private variable _height 0
128	private variable _resizePending 0
129	private variable _rotatePending 0
130	private variable _polydataOpacityPending 0
131	private variable _rotateDelay 150
132	private variable _opacityDelay 150
133	}
134
135	itk::usual VtkMeshViewer {
136	keep -background -foreground -cursor -font
137	keep -plotbackground -plotforeground
138	}
139
140	# ----------------------------------------------------------------------
141	# CONSTRUCTOR
142	# ----------------------------------------------------------------------
143	itcl::body Rappture::VtkMeshViewer::constructor {hostlist args} {
144	package require vtk
145	set _serverType "vtkvis"
146
147	# Rebuild event
148	$_dispatcher register !rebuild
149	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
150
151	# Resize event
152	$_dispatcher register !resize
153	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
154
155	# Rotate event
156	$_dispatcher register !rotate
157	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
158
159	# Polydata opacity event
160	$_dispatcher register !polydataOpacity
161	$_dispatcher dispatch $this !polydataOpacity \
162	"[itcl::code $this SetPolydataOpacity]; list"
163	#
164	# Populate parser with commands handle incoming requests
165	#
166	$_parser alias image [itcl::code $this ReceiveImage]
167	$_parser alias dataset [itcl::code $this ReceiveDataset]
168
169	# Initialize the view to some default parameters.
170	array set _view {
171	-ortho 0
172	-qw 0.853553
173	-qx -0.353553
174	-qy 0.353553
175	-qz 0.146447
176	-xpan 0
177	-ypan 0
178	-zoom 1.0
179	}
180	set _arcball [blt::arcball create 100 100]
181	$_arcball quaternion [ViewToQuaternion]
182
183	set _limits(zmin) 0.0
184	set _limits(zmax) 1.0
185
186	array set _settings {
187	-axesvisible 1
188	-axislabels 1
189	-axisminorticks 1
190	-outline 0
191	-polydataedges 0
192	-polydatalighting 1
193	-polydataopacity 1.0
194	-polydatavisible 1
195	-polydatawireframe 0
196	-xgrid 0
197	-ygrid 0
198	-zgrid 0
199	}
200	array set _widget {
201	-polydataopacity 100
202	}
203	itk_component add view {
204	canvas $itk_component(plotarea).view \
205	-highlightthickness 0 -borderwidth 0
206	} {
207	usual
208	ignore -highlightthickness -borderwidth -background
209	}
210
211	itk_component add fieldmenu {
212	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
213	-tearoff no
214	} {
215	usual
216	ignore -background -foreground -relief -tearoff
217	}
218
219	set c $itk_component(view)
220	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
221	bind $c <4> [itcl::code $this Zoom in 0.25]
222	bind $c <5> [itcl::code $this Zoom out 0.25]
223	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
224	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
225	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
226	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
227	bind $c <Enter> "focus %W"
228	bind $c <Control-F1> [itcl::code $this ToggleConsole]
229
230	# Fix the scrollregion in case we go off screen
231	$c configure -scrollregion [$c bbox all]
232
233	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
234	set _map(cwidth) -1
235	set _map(cheight) -1
236	set _map(zoom) 1.0
237	set _map(original) ""
238
239	set f [$itk_component(main) component controls]
240	itk_component add reset {
241	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
242	-highlightthickness 0 \
243	-image [Rappture::icon reset-view] \
244	-command [itcl::code $this Zoom reset]
245	} {
246	usual
247	ignore -highlightthickness
248	}
249	pack $itk_component(reset) -side top -padx 2 -pady 2
250	Rappture::Tooltip::for $itk_component(reset) \
251	"Reset the view to the default zoom level"
252
253	itk_component add zoomin {
254	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
255	-highlightthickness 0 \
256	-image [Rappture::icon zoom-in] \
257	-command [itcl::code $this Zoom in]
258	} {
259	usual
260	ignore -highlightthickness
261	}
262	pack $itk_component(zoomin) -side top -padx 2 -pady 2
263	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
264
265	itk_component add zoomout {
266	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
267	-highlightthickness 0 \
268	-image [Rappture::icon zoom-out] \
269	-command [itcl::code $this Zoom out]
270	} {
271	usual
272	ignore -highlightthickness
273	}
274	pack $itk_component(zoomout) -side top -padx 2 -pady 2
275	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
276
277	BuildPolydataTab
278	BuildAxisTab
279	BuildCameraTab
280
281	# Hack around the Tk panewindow. The problem is that the requested
282	# size of the 3d view isn't set until an image is retrieved from
283	# the server. So the panewindow uses the tiny size.
284	set w 10000
285	pack forget $itk_component(view)
286	blt::table $itk_component(plotarea) \
287	0,0 $itk_component(view) -fill both -reqwidth $w
288	blt::table configure $itk_component(plotarea) c1 -resize none
289
290	# Bindings for rotation via mouse
291	bind $itk_component(view) <ButtonPress-1> \
292	[itcl::code $this Rotate click %x %y]
293	bind $itk_component(view) <B1-Motion> \
294	[itcl::code $this Rotate drag %x %y]
295	bind $itk_component(view) <ButtonRelease-1> \
296	[itcl::code $this Rotate release %x %y]
297
298	# Bindings for panning via mouse
299	bind $itk_component(view) <ButtonPress-2> \
300	[itcl::code $this Pan click %x %y]
301	bind $itk_component(view) <B2-Motion> \
302	[itcl::code $this Pan drag %x %y]
303	bind $itk_component(view) <ButtonRelease-2> \
304	[itcl::code $this Pan release %x %y]
305
306	#bind $itk_component(view) <ButtonRelease-3> \
307	# [itcl::code $this Pick %x %y]
308
309	# Bindings for panning via keyboard
310	bind $itk_component(view) <KeyPress-Left> \
311	[itcl::code $this Pan set -10 0]
312	bind $itk_component(view) <KeyPress-Right> \
313	[itcl::code $this Pan set 10 0]
314	bind $itk_component(view) <KeyPress-Up> \
315	[itcl::code $this Pan set 0 -10]
316	bind $itk_component(view) <KeyPress-Down> \
317	[itcl::code $this Pan set 0 10]
318	bind $itk_component(view) <Shift-KeyPress-Left> \
319	[itcl::code $this Pan set -2 0]
320	bind $itk_component(view) <Shift-KeyPress-Right> \
321	[itcl::code $this Pan set 2 0]
322	bind $itk_component(view) <Shift-KeyPress-Up> \
323	[itcl::code $this Pan set 0 -2]
324	bind $itk_component(view) <Shift-KeyPress-Down> \
325	[itcl::code $this Pan set 0 2]
326
327	# Bindings for zoom via keyboard
328	bind $itk_component(view) <KeyPress-Prior> \
329	[itcl::code $this Zoom out]
330	bind $itk_component(view) <KeyPress-Next> \
331	[itcl::code $this Zoom in]
332
333	bind $itk_component(view) <Enter> "focus $itk_component(view)"
334
335	if {[string equal "x11" [tk windowingsystem]]} {
336	# Bindings for zoom via mouse
337	bind $itk_component(view) <4> [itcl::code $this Zoom out]
338	bind $itk_component(view) <5> [itcl::code $this Zoom in]
339	}
340
341	set _image(download) [image create photo]
342
343	eval itk_initialize $args
344	Connect
345	}
346
347	# ----------------------------------------------------------------------
348	# DESTRUCTOR
349	# ----------------------------------------------------------------------
350	itcl::body Rappture::VtkMeshViewer::destructor {} {
351	Disconnect
352	$_dispatcher cancel !rebuild
353	$_dispatcher cancel !resize
354	$_dispatcher cancel !rotate
355	image delete $_image(plot)
356	image delete $_image(download)
357	catch { blt::arcball destroy $_arcball }
358	}
359
360	itcl::body Rappture::VtkMeshViewer::DoResize {} {
361	if { $_width < 2 } {
362	set _width 500
363	}
364	if { $_height < 2 } {
365	set _height 500
366	}
367	set _start [clock clicks -milliseconds]
368	SendCmd "screen size $_width $_height"
369
370	set _resizePending 0
371	}
372
373	itcl::body Rappture::VtkMeshViewer::DoRotate {} {
374	SendCmd "camera orient [ViewToQuaternion]"
375	set _rotatePending 0
376	}
377
378	itcl::body Rappture::VtkMeshViewer::EventuallyResize { w h } {
379	set _width $w
380	set _height $h
381	$_arcball resize $w $h
382	if { !$_resizePending } {
383	set _resizePending 1
384	$_dispatcher event -after 200 !resize
385	}
386	}
387
388	itcl::body Rappture::VtkMeshViewer::EventuallyRotate { q } {
389	QuaternionToView $q
390	if { !$_rotatePending } {
391	set _rotatePending 1
392	$_dispatcher event -after $_rotateDelay !rotate
393	}
394	}
395
396	itcl::body Rappture::VtkMeshViewer::SetPolydataOpacity {} {
397	set _polydataOpacityPending 0
398	set val $_settings(-polydataopacity)
399	SendCmd "polydata opacity $val"
400	}
401
402	itcl::body Rappture::VtkMeshViewer::EventuallySetPolydataOpacity {} {
403	if { !$_polydataOpacityPending } {
404	set _polydataOpacityPending 1
405	$_dispatcher event -after $_opacityDelay !polydataOpacity
406	}
407	}
408
409	# ----------------------------------------------------------------------
410	# USAGE: add <dataobj> ?<settings>?
411	#
412	# Clients use this to add a data object to the plot. The optional
413	# <settings> are used to configure the plot. Allowed settings are
414	# -color, -brightness, -width, -linestyle, and -raise.
415	# ----------------------------------------------------------------------
416	itcl::body Rappture::VtkMeshViewer::add {dataobj {settings ""}} {
417	array set params {
418	-color auto
419	-width 1
420	-linestyle solid
421	-brightness 0
422	-raise 0
423	-description ""
424	-param ""
425	-type ""
426	}
427	array set params $settings
428	set params(-description) ""
429	set params(-param) ""
430	array set params $settings
431
432	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
433	# can't handle -autocolors yet
434	set params(-color) black
435	}
436	set pos [lsearch -exact $_dlist $dataobj]
437	if {$pos < 0} {
438	lappend _dlist $dataobj
439	}
440	set _obj2ovride($dataobj-color) $params(-color)
441	set _obj2ovride($dataobj-width) $params(-width)
442	set _obj2ovride($dataobj-raise) $params(-raise)
443	$_dispatcher event -idle !rebuild
444	}
445
446	# ----------------------------------------------------------------------
447	# USAGE: delete ?<dataobj1> <dataobj2> ...?
448	#
449	# Clients use this to delete a dataobj from the plot. If no dataobjs
450	# are specified, then all dataobjs are deleted. No data objects are
451	# deleted. They are only removed from the display list.
452	#
453	# ----------------------------------------------------------------------
454	itcl::body Rappture::VtkMeshViewer::delete {args} {
455	if { [llength $args] == 0} {
456	set args $_dlist
457	}
458	# Delete all specified dataobjs
459	set changed 0
460	foreach dataobj $args {
461	set pos [lsearch -exact $_dlist $dataobj]
462	if { $pos < 0 } {
463	continue; # Don't know anything about it.
464	}
465	# Remove it from the dataobj list.
466	set _dlist [lreplace $_dlist $pos $pos]
467	array unset _obj2ovride $dataobj-*
468	set changed 1
469	}
470	# If anything changed, then rebuild the plot
471	if { $changed } {
472	$_dispatcher event -idle !rebuild
473	}
474	}
475
476	# ----------------------------------------------------------------------
477	# USAGE: get ?-objects?
478	# USAGE: get ?-visible?
479	# USAGE: get ?-image view?
480	#
481	# Clients use this to query the list of objects being plotted, in
482	# order from bottom to top of this result. The optional "-image"
483	# flag can also request the internal images being shown.
484	# ----------------------------------------------------------------------
485	itcl::body Rappture::VtkMeshViewer::get {args} {
486	if {[llength $args] == 0} {
487	set args "-objects"
488	}
489
490	set op [lindex $args 0]
491	switch -- $op {
492	"-objects" {
493	# put the dataobj list in order according to -raise options
494	set dlist {}
495	foreach dataobj $_dlist {
496	if { ![IsValidObject $dataobj] } {
497	continue
498	}
499	if {[info exists _obj2ovride($dataobj-raise)] &&
500	$_obj2ovride($dataobj-raise)} {
501	set dlist [linsert $dlist 0 $dataobj]
502	} else {
503	lappend dlist $dataobj
504	}
505	}
506	return $dlist
507	}
508	"-visible" {
509	set dlist {}
510	foreach dataobj $_dlist {
511	if { ![IsValidObject $dataobj] } {
512	continue
513	}
514	if { ![info exists _obj2ovride($dataobj-raise)] } {
515	# No setting indicates that the object isn't visible.
516	continue
517	}
518	# Otherwise use the -raise parameter to put the object to
519	# the front of the list.
520	if { $_obj2ovride($dataobj-raise) } {
521	set dlist [linsert $dlist 0 $dataobj]
522	} else {
523	lappend dlist $dataobj
524	}
525	}
526	return $dlist
527	}
528	-image {
529	if {[llength $args] != 2} {
530	error "wrong # args: should be \"get -image view\""
531	}
532	switch -- [lindex $args end] {
533	view {
534	return $_image(plot)
535	}
536	default {
537	error "bad image name \"[lindex $args end]\": should be view"
538	}
539	}
540	}
541	default {
542	error "bad option \"$op\": should be -objects or -image"
543	}
544	}
545	}
546
547	# ----------------------------------------------------------------------
548	# USAGE: scale ?<data1> <data2> ...?
549	#
550	# Sets the default limits for the overall plot according to the
551	# limits of the data for all of the given <data> objects. This
552	# accounts for all objects--even those not showing on the screen.
553	# Because of this, the limits are appropriate for all objects as
554	# the user scans through data in the ResultSet viewer.
555	# ----------------------------------------------------------------------
556	itcl::body Rappture::VtkMeshViewer::scale {args} {
557	foreach dataobj $args {
558	array set bounds [limits $dataobj]
559	if {![info exists _limits(xmin)] \|\| $_limits(xmin) > $bounds(xmin)} {
560	set _limits(xmin) $bounds(xmin)
561	}
562	if {![info exists _limits(xmax)] \|\| $_limits(xmax) < $bounds(xmax)} {
563	set _limits(xmax) $bounds(xmax)
564	}
565
566	if {![info exists _limits(ymin)] \|\| $_limits(ymin) > $bounds(ymin)} {
567	set _limits(ymin) $bounds(ymin)
568	}
569	if {![info exists _limits(ymax)] \|\| $_limits(ymax) < $bounds(ymax)} {
570	set _limits(ymax) $bounds(ymax)
571	}
572
573	if {![info exists _limits(zmin)] \|\| $_limits(zmin) > $bounds(zmin)} {
574	set _limits(zmin) $bounds(zmin)
575	}
576	if {![info exists _limits(zmax)] \|\| $_limits(zmax) < $bounds(zmax)} {
577	set _limits(zmax) $bounds(zmax)
578	}
579	}
580	}
581
582	# ----------------------------------------------------------------------
583	# USAGE: download coming
584	# USAGE: download controls <downloadCommand>
585	# USAGE: download now
586	#
587	# Clients use this method to create a downloadable representation
588	# of the plot. Returns a list of the form {ext string}, where
589	# "ext" is the file extension (indicating the type of data) and
590	# "string" is the data itself.
591	# ----------------------------------------------------------------------
592	itcl::body Rappture::VtkMeshViewer::download {option args} {
593	switch $option {
594	coming {
595	if {[catch {
596	blt::winop snap $itk_component(plotarea) $_image(download)
597	}]} {
598	$_image(download) configure -width 1 -height 1
599	$_image(download) put #000000
600	}
601	}
602	controls {
603	set popup .vtkviewerdownload
604	if { ![winfo exists .vtkviewerdownload] } {
605	set inner [BuildDownloadPopup $popup [lindex $args 0]]
606	} else {
607	set inner [$popup component inner]
608	}
609	set _downloadPopup(image_controls) $inner.image_frame
610	set num [llength [get]]
611	set num [expr {($num == 1) ? "1 result" : "$num results"}]
612	set word [Rappture::filexfer::label downloadWord]
613	$inner.summary configure -text "$word $num in the following format:"
614	update idletasks ;# Fix initial sizes
615	return $popup
616	}
617	now {
618	set popup .vtkviewerdownload
619	if {[winfo exists .vtkviewerdownload]} {
620	$popup deactivate
621	}
622	switch -- $_downloadPopup(format) {
623	"image" {
624	return [$this GetImage [lindex $args 0]]
625	}
626	"vtk" {
627	return [$this GetVtkData [lindex $args 0]]
628	}
629	}
630	return ""
631	}
632	default {
633	error "bad option \"$option\": should be coming, controls, now"
634	}
635	}
636	}
637
638	# ----------------------------------------------------------------------
639	# USAGE: Connect ?<host:port>,<host:port>...?
640	#
641	# Clients use this method to establish a connection to a new
642	# server, or to reestablish a connection to the previous server.
643	# Any existing connection is automatically closed.
644	# ----------------------------------------------------------------------
645	itcl::body Rappture::VtkMeshViewer::Connect {} {
646	global readyForNextFrame
647	set readyForNextFrame 1
648	set _hosts [GetServerList "vtkvis"]
649	if { "" == $_hosts } {
650	return 0
651	}
652	set result [VisViewer::Connect $_hosts]
653	if { $result } {
654	if { $_reportClientInfo } {
655	# Tell the server the viewer, hub, user and session.
656	# Do this immediately on connect before buffering any commands
657	global env
658
659	set info {}
660	set user "???"
661	if { [info exists env(USER)] } {
662	set user $env(USER)
663	}
664	set session "???"
665	if { [info exists env(SESSION)] } {
666	set session $env(SESSION)
667	}
668	lappend info "version" "$Rappture::version"
669	lappend info "build" "$Rappture::build"
670	lappend info "svnurl" "$Rappture::svnurl"
671	lappend info "installdir" "$Rappture::installdir"
672	lappend info "hub" [exec hostname]
673	lappend info "client" "vtkmeshviewer"
674	lappend info "user" $user
675	lappend info "session" $session
676	SendCmd "clientinfo [list $info]"
677	}
678
679	set w [winfo width $itk_component(view)]
680	set h [winfo height $itk_component(view)]
681	EventuallyResize $w $h
682	}
683	return $result
684	}
685
686	#
687	# isconnected --
688	#
689	# Indicates if we are currently connected to the visualization server.
690	#
691	itcl::body Rappture::VtkMeshViewer::isconnected {} {
692	return [VisViewer::IsConnected]
693	}
694
695	#
696	# disconnect --
697	#
698	itcl::body Rappture::VtkMeshViewer::disconnect {} {
699	Disconnect
700	set _reset 1
701	}
702
703	#
704	# Disconnect --
705	#
706	# Clients use this method to disconnect from the current rendering
707	# server.
708	#
709	itcl::body Rappture::VtkMeshViewer::Disconnect {} {
710	VisViewer::Disconnect
711
712	# disconnected -- no more data sitting on server
713	array unset _datasets
714	array unset _data
715	global readyForNextFrame
716	set readyForNextFrame 1
717	}
718
719	# ----------------------------------------------------------------------
720	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
721	#
722	# Invoked automatically whenever the "image" command comes in from
723	# the rendering server. Indicates that binary image data with the
724	# specified <size> will follow.
725	# ----------------------------------------------------------------------
726	itcl::body Rappture::VtkMeshViewer::ReceiveImage { args } {
727	global readyForNextFrame
728	set readyForNextFrame 1
729	array set info {
730	-token "???"
731	-bytes 0
732	-type image
733	}
734	array set info $args
735	set bytes [ReceiveBytes $info(-bytes)]
736	if { $info(-type) == "image" } {
737	if 0 {
738	set f [open "last.ppm" "w"]
739	fconfigure $f -encoding binary
740	puts -nonewline $f $bytes
741	close $f
742	}
743	$_image(plot) configure -data $bytes
744	set time [clock seconds]
745	set date [clock format $time]
746	if { $_start > 0 } {
747	set finish [clock clicks -milliseconds]
748	set _start 0
749	}
750	} elseif { $info(type) == "print" } {
751	set tag $this-print-$info(-token)
752	set _hardcopy($tag) $bytes
753	}
754	}
755
756	#
757	# ReceiveDataset --
758	#
759	itcl::body Rappture::VtkMeshViewer::ReceiveDataset { args } {
760	if { ![isconnected] } {
761	return
762	}
763	set option [lindex $args 0]
764	switch -- $option {
765	"scalar" {
766	set option [lindex $args 1]
767	switch -- $option {
768	"world" {
769	foreach { x y z value tag } [lrange $args 2 end] break
770	}
771	"pixel" {
772	foreach { x y value tag } [lrange $args 2 end] break
773	}
774	}
775	}
776	"vector" {
777	set option [lindex $args 1]
778	switch -- $option {
779	"world" {
780	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
781	}
782	"pixel" {
783	foreach { x y vx vy vz tag } [lrange $args 2 end] break
784	}
785	}
786	}
787	"names" {
788	foreach { name } [lindex $args 1] {
789	#puts stderr "Dataset: $name"
790	}
791	}
792	default {
793	error "unknown dataset option \"$option\" from server"
794	}
795	}
796	}
797
798	# ----------------------------------------------------------------------
799	# USAGE: Rebuild
800	#
801	# Called automatically whenever something changes that affects the
802	# data in the widget. Clears any existing data and rebuilds the
803	# widget to display new data.
804	# ----------------------------------------------------------------------
805	itcl::body Rappture::VtkMeshViewer::Rebuild {} {
806
807	set w [winfo width $itk_component(view)]
808	set h [winfo height $itk_component(view)]
809	if { $w < 2 \|\| $h < 2 } {
810	$_dispatcher event -idle !rebuild
811	return
812	}
813
814	# Turn on buffering of commands to the server. We don't want to
815	# be preempted by a server disconnect/reconnect (which automatically
816	# generates a new call to Rebuild).
817	StartBufferingCommands
818
819	if { $_reset } {
820	set _width $w
821	set _height $h
822	$_arcball resize $w $h
823	DoResize
824	InitSettings -xgrid -ygrid -zgrid -axismode \
825	-axesvisible -axislabels -axisminorticks
826	StopBufferingCommands
827	SendCmd "imgflush"
828	StartBufferingCommands
829	}
830
831	set _limits(zmin) ""
832	set _limits(zmax) ""
833	set _first ""
834	SendCmd "dataset visible 0"
835	set count 0
836	foreach dataobj [get -objects] {
837	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
838	set _first $dataobj
839	}
840	set _obj2datasets($dataobj) ""
841	set tag $dataobj
842	if { ![info exists _datasets($tag)] } {
843	set bytes [$dataobj vtkdata -full]
844	if { $bytes == "" } {
845	continue
846	}
847	set length [string length $bytes]
848	if { $_reportClientInfo } {
849	set info {}
850	lappend info "tool_id" [$dataobj hints toolid]
851	lappend info "tool_name" [$dataobj hints toolname]
852	lappend info "tool_title" [$dataobj hints tooltitle]
853	lappend info "tool_command" [$dataobj hints toolcommand]
854	lappend info "tool_revision" [$dataobj hints toolrevision]
855	lappend info "dataset_label" [$dataobj hints label]
856	lappend info "dataset_size" $length
857	lappend info "dataset_tag" $tag
858	SendCmd "clientinfo [list $info]"
859	}
860	SendCmd "dataset add $tag data follows $length"
861	append _outbuf $bytes
862	set _datasets($tag) 1
863	SetObjectStyle $dataobj
864	}
865	lappend _obj2datasets($dataobj) $tag
866	if { [info exists _obj2ovride($dataobj-raise)] } {
867	SendCmd "dataset visible 1 $tag"
868	EventuallySetPolydataOpacity
869	}
870	}
871	if {"" != $_first} {
872	set location [$_first hints camera]
873	if { $location != "" } {
874	array set view $location
875	}
876
877	foreach axis { x y z } {
878	set label [$_first label ${axis}]
879	if { $label != "" } {
880	SendCmd [list axis name $axis $label]
881	}
882	set units [$_first units ${axis}]
883	if { $units != "" } {
884	SendCmd [list axis units $axis $units]
885	}
886	}
887	}
888	InitSettings -outline
889	if { $_reset } {
890	# These are settings that rely on a dataset being loaded.
891	InitSettings -polydataedges -polydatalighting -polydataopacity \
892	-polydatavisible -polydatawireframe
893
894	#SendCmd "axis lformat all %g"
895
896	$_arcball quaternion [ViewToQuaternion]
897	SendCmd "camera reset"
898	if { $_view(-ortho)} {
899	SendCmd "camera mode ortho"
900	} else {
901	SendCmd "camera mode persp"
902	}
903	DoRotate
904	PanCamera
905	Zoom reset
906	}
907
908	set _reset 0
909	global readyForNextFrame
910	set readyForNextFrame 0; # Don't advance to the next frame
911	# until we get an image.
912
913	# Actually write the commands to the server socket. If it fails, we don't
914	# care. We're finished here.
915	blt::busy hold $itk_component(hull)
916	StopBufferingCommands
917	blt::busy release $itk_component(hull)
918	}
919
920	# ----------------------------------------------------------------------
921	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
922	#
923	# Returns a list of server IDs for the current datasets being displayed. This
924	# is normally a single ID, but it might be a list of IDs if the current data
925	# object has multiple components.
926	# ----------------------------------------------------------------------
927	itcl::body Rappture::VtkMeshViewer::CurrentDatasets {args} {
928	set flag [lindex $args 0]
929	switch -- $flag {
930	"-all" {
931	if { [llength $args] > 1 } {
932	error "CurrentDatasets: can't specify dataobj after \"-all\""
933	}
934	set dlist [get -objects]
935	}
936	"-visible" {
937	if { [llength $args] > 1 } {
938	set dlist {}
939	set args [lrange $args 1 end]
940	foreach dataobj $args {
941	if { [info exists _obj2ovride($dataobj-raise)] } {
942	lappend dlist $dataobj
943	}
944	}
945	} else {
946	set dlist [get -visible]
947	}
948	}
949	default {
950	set dlist $args
951	}
952	}
953	set rlist ""
954	foreach tag $dlist {
955	if { [info exists _datasets($tag)] && $_datasets($tag) } {
956	lappend rlist $tag
957	}
958	}
959	return $rlist
960	}
961
962	# ----------------------------------------------------------------------
963	# USAGE: Zoom in
964	# USAGE: Zoom out
965	# USAGE: Zoom reset
966	#
967	# Called automatically when the user clicks on one of the zoom
968	# controls for this widget. Changes the zoom for the current view.
969	# ----------------------------------------------------------------------
970	itcl::body Rappture::VtkMeshViewer::Zoom {option} {
971	switch -- $option {
972	"in" {
973	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
974	SendCmd "camera zoom $_view(-zoom)"
975	}
976	"out" {
977	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
978	SendCmd "camera zoom $_view(-zoom)"
979	}
980	"reset" {
981	array set _view {
982	-qw 0.853553
983	-qx -0.353553
984	-qy 0.353553
985	-qz 0.146447
986	-xpan 0
987	-ypan 0
988	-zoom 1.0
989	}
990	if { $_first != "" } {
991	set location [$_first hints camera]
992	if { $location != "" } {
993	array set _view $location
994	}
995	}
996	$_arcball quaternion [ViewToQuaternion]
997	DoRotate
998	SendCmd "camera reset"
999	}
1000	}
1001	}
1002
1003	itcl::body Rappture::VtkMeshViewer::PanCamera {} {
1004	set x $_view(-xpan)
1005	set y $_view(-ypan)
1006	SendCmd "camera pan $x $y"
1007	}
1008
1009	# ----------------------------------------------------------------------
1010	# USAGE: Rotate click <x> <y>
1011	# USAGE: Rotate drag <x> <y>
1012	# USAGE: Rotate release <x> <y>
1013	#
1014	# Called automatically when the user clicks/drags/releases in the
1015	# plot area. Moves the plot according to the user's actions.
1016	# ----------------------------------------------------------------------
1017	itcl::body Rappture::VtkMeshViewer::Rotate {option x y} {
1018	switch -- $option {
1019	"click" {
1020	$itk_component(view) configure -cursor fleur
1021	set _click(x) $x
1022	set _click(y) $y
1023	}
1024	"drag" {
1025	if {[array size _click] == 0} {
1026	Rotate click $x $y
1027	} else {
1028	set w [winfo width $itk_component(view)]
1029	set h [winfo height $itk_component(view)]
1030	if {$w <= 0 \|\| $h <= 0} {
1031	return
1032	}
1033
1034	if {[catch {
1035	# this fails sometimes for no apparent reason
1036	set dx [expr {double($x-$_click(x))/$w}]
1037	set dy [expr {double($y-$_click(y))/$h}]
1038	}]} {
1039	return
1040	}
1041	if { $dx == 0 && $dy == 0 } {
1042	return
1043	}
1044	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1045	EventuallyRotate $q
1046	set _click(x) $x
1047	set _click(y) $y
1048	}
1049	}
1050	"release" {
1051	Rotate drag $x $y
1052	$itk_component(view) configure -cursor ""
1053	catch {unset _click}
1054	}
1055	default {
1056	error "bad option \"$option\": should be click, drag, release"
1057	}
1058	}
1059	}
1060
1061	itcl::body Rappture::VtkMeshViewer::Pick {x y} {
1062	foreach tag [CurrentDatasets -visible] {
1063	SendCmd "dataset getscalar pixel $x $y $tag"
1064	}
1065	}
1066
1067	# ----------------------------------------------------------------------
1068	# USAGE: $this Pan click x y
1069	# $this Pan drag x y
1070	# $this Pan release x y
1071	#
1072	# Called automatically when the user clicks on one of the zoom
1073	# controls for this widget. Changes the zoom for the current view.
1074	# ----------------------------------------------------------------------
1075	itcl::body Rappture::VtkMeshViewer::Pan {option x y} {
1076	switch -- $option {
1077	"set" {
1078	set w [winfo width $itk_component(view)]
1079	set h [winfo height $itk_component(view)]
1080	set x [expr $x / double($w)]
1081	set y [expr $y / double($h)]
1082	set _view(-xpan) [expr $_view(-xpan) + $x]
1083	set _view(-ypan) [expr $_view(-ypan) + $y]
1084	PanCamera
1085	return
1086	}
1087	"click" {
1088	set _click(x) $x
1089	set _click(y) $y
1090	$itk_component(view) configure -cursor hand1
1091	}
1092	"drag" {
1093	if { ![info exists _click(x)] } {
1094	set _click(x) $x
1095	}
1096	if { ![info exists _click(y)] } {
1097	set _click(y) $y
1098	}
1099	set w [winfo width $itk_component(view)]
1100	set h [winfo height $itk_component(view)]
1101	set dx [expr ($_click(x) - $x)/double($w)]
1102	set dy [expr ($_click(y) - $y)/double($h)]
1103	set _click(x) $x
1104	set _click(y) $y
1105	set _view(-xpan) [expr $_view(-xpan) - $dx]
1106	set _view(-ypan) [expr $_view(-ypan) - $dy]
1107	PanCamera
1108	}
1109	"release" {
1110	Pan drag $x $y
1111	$itk_component(view) configure -cursor ""
1112	}
1113	default {
1114	error "unknown option \"$option\": should set, click, drag, or release"
1115	}
1116	}
1117	}
1118
1119	# ----------------------------------------------------------------------
1120	# USAGE: InitSettings <what> ?<value>?
1121	#
1122	# Used internally to update rendering settings whenever parameters
1123	# change in the popup settings panel. Sends the new settings off
1124	# to the back end.
1125	# ----------------------------------------------------------------------
1126	itcl::body Rappture::VtkMeshViewer::InitSettings { args } {
1127	foreach setting $args {
1128	AdjustSetting $setting
1129	}
1130	}
1131
1132	#
1133	# AdjustSetting --
1134	#
1135	# Changes/updates a specific setting in the widget. There are
1136	# usually user-setable option. Commands are sent to the render
1137	# server.
1138	#
1139	itcl::body Rappture::VtkMeshViewer::AdjustSetting {what {value ""}} {
1140	if { ![isconnected] } {
1141	return
1142	}
1143	switch -- $what {
1144	"-outline" {
1145	set bool $_settings($what)
1146	# Only display a outline for the currently visible sets.
1147	SendCmd "outline visible 0"
1148	foreach dataset [CurrentDatasets -visible] {
1149	SendCmd "outline visible $bool $dataset"
1150	}
1151	}
1152	"-polydataopacity" {
1153	set _settings($what) [expr $_widget($what) * 0.01]
1154	EventuallySetPolydataOpacity
1155	}
1156	"-polydatawireframe" {
1157	set bool $_settings($what)
1158	SendCmd "polydata wireframe $bool"
1159	}
1160	"-polydatavisible" {
1161	set bool $_settings($what)
1162	# Only change visibility of data sets marked "visible".
1163	foreach dataset [CurrentDatasets -visible] {
1164	SendCmd "polydata visible $bool $dataset"
1165	}
1166	}
1167	"-polydatalighting" {
1168	set bool $_settings($what)
1169	SendCmd "polydata lighting $bool"
1170	}
1171	"-polydataedges" {
1172	set bool $_settings($what)
1173	SendCmd "polydata edges $bool"
1174	}
1175	"-axesvisible" {
1176	set bool $_settings($what)
1177	SendCmd "axis visible all $bool"
1178	}
1179	"-axislabels" {
1180	set bool $_settings($what)
1181	SendCmd "axis labels all $bool"
1182	}
1183	"-axisminorticks" {
1184	set bool $_settings($what)
1185	SendCmd "axis minticks all $bool"
1186	}
1187	"-xgrid" {
1188	set bool $_settings($what)
1189	SendCmd "axis grid x $bool"
1190	}
1191	"-ygrid" {
1192	set bool $_settings($what)
1193	SendCmd "axis grid y $bool"
1194	}
1195	"-zgrid" {
1196	set bool $_settings($what)
1197	SendCmd "axis grid z $bool"
1198	}
1199	"-axismode" {
1200	set mode [$itk_component(axismode) value]
1201	set mode [$itk_component(axismode) translate $mode]
1202	SendCmd "axis flymode $mode"
1203	}
1204	default {
1205	error "don't know how to fix $what"
1206	}
1207	}
1208	}
1209
1210	# ----------------------------------------------------------------------
1211	# CONFIGURATION OPTION: -plotbackground
1212	# ----------------------------------------------------------------------
1213	itcl::configbody Rappture::VtkMeshViewer::plotbackground {
1214	if { [isconnected] } {
1215	set rgb [Color2RGB $itk_option(-plotbackground)]
1216	SendCmd "screen bgcolor $rgb"
1217	}
1218	}
1219
1220	# ----------------------------------------------------------------------
1221	# CONFIGURATION OPTION: -plotforeground
1222	# ----------------------------------------------------------------------
1223	itcl::configbody Rappture::VtkMeshViewer::plotforeground {
1224	if { [isconnected] } {
1225	set rgb [Color2RGB $itk_option(-plotforeground)]
1226	SendCmd "axis color all $rgb"
1227	SendCmd "outline color $rgb"
1228	}
1229	}
1230
1231	itcl::body Rappture::VtkMeshViewer::limits { dataobj } {
1232	set tag $dataobj
1233	if { ![info exists _limits($tag)] } {
1234	set data [$dataobj vtkdata -full]
1235	if { $data == "" } {
1236	continue
1237	}
1238	set tmpfile file[pid].vtk
1239	set f [open "$tmpfile" "w"]
1240	fconfigure $f -translation binary -encoding binary
1241	puts $f $data
1242	close $f
1243	set reader [vtkDataSetReader $tag-xvtkDataSetReader]
1244	$reader SetFileName $tmpfile
1245	$reader Update
1246	file delete $tmpfile
1247	set output [$reader GetOutput]
1248	set _limits($tag) [$output GetBounds]
1249	rename $output ""
1250	rename $reader ""
1251	}
1252	foreach { xMin xMax yMin yMax zMin zMax} $_limits($tag) break
1253	if {![info exists limits(xmin)] \|\| $limits(xmin) > $xMin} {
1254	set limits(xmin) $xMin
1255	}
1256	if {![info exists limits(xmax)] \|\| $limits(xmax) < $xMax} {
1257	set limits(xmax) $xMax
1258	}
1259	if {![info exists limits(ymin)] \|\| $limits(ymin) > $yMin} {
1260	set limits(ymin) $xMin
1261	}
1262	if {![info exists limits(ymax)] \|\| $limits(ymax) < $yMax} {
1263	set limits(ymax) $yMax
1264	}
1265	if {![info exists limits(zmin)] \|\| $limits(zmin) > $zMin} {
1266	set limits(zmin) $zMin
1267	}
1268	if {![info exists limits(zmax)] \|\| $limits(zmax) < $zMax} {
1269	set limits(zmax) $zMax
1270	}
1271
1272	return [array get limits]
1273	}
1274
1275	itcl::body Rappture::VtkMeshViewer::BuildPolydataTab {} {
1276
1277	set fg [option get $itk_component(hull) font Font]
1278	#set bfg [option get $itk_component(hull) boldFont Font]
1279
1280	set inner [$itk_component(main) insert end \
1281	-title "Mesh Settings" \
1282	-icon [Rappture::icon mesh]]
1283	$inner configure -borderwidth 4
1284
1285	checkbutton $inner.mesh \
1286	-text "Show Mesh" \
1287	-variable [itcl::scope _settings(-polydatavisible)] \
1288	-command [itcl::code $this AdjustSetting -polydatavisible] \
1289	-font "Arial 9" -anchor w
1290
1291	checkbutton $inner.outline \
1292	-text "Show Outline" \
1293	-variable [itcl::scope _settings(-outline)] \
1294	-command [itcl::code $this AdjustSetting -outline] \
1295	-font "Arial 9" -anchor w
1296
1297	checkbutton $inner.wireframe \
1298	-text "Show Wireframe" \
1299	-variable [itcl::scope _settings(-polydatawireframe)] \
1300	-command [itcl::code $this AdjustSetting -polydatawireframe] \
1301	-font "Arial 9" -anchor w
1302
1303	checkbutton $inner.lighting \
1304	-text "Enable Lighting" \
1305	-variable [itcl::scope _settings(-polydatalighting)] \
1306	-command [itcl::code $this AdjustSetting -polydatalighting] \
1307	-font "Arial 9" -anchor w
1308
1309	checkbutton $inner.edges \
1310	-text "Show Edges" \
1311	-variable [itcl::scope _settings(-polydataedges)] \
1312	-command [itcl::code $this AdjustSetting -polydataedges] \
1313	-font "Arial 9" -anchor w
1314
1315	itk_component add field_l {
1316	label $inner.field_l -text "Field" -font "Arial 9"
1317	} {
1318	ignore -font
1319	}
1320	itk_component add field {
1321	Rappture::Combobox $inner.field -width 10 -editable no
1322	}
1323	bind $inner.field <<Value>> \
1324	[itcl::code $this AdjustSetting -field]
1325
1326	label $inner.opacity_l -text "Opacity" -font "Arial 9" -anchor w
1327	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1328	-variable [itcl::scope _widget(-polydataopacity)] \
1329	-width 10 \
1330	-showvalue off \
1331	-command [itcl::code $this AdjustSetting -polydataopacity]
1332	$inner.opacity set [expr $_settings(-polydataopacity) * 100.0]
1333
1334	blt::table $inner \
1335	0,0 $inner.mesh -cspan 2 -anchor w -pady 2 \
1336	1,0 $inner.outline -cspan 2 -anchor w -pady 2 \
1337	2,0 $inner.wireframe -cspan 2 -anchor w -pady 2 \
1338	3,0 $inner.lighting -cspan 2 -anchor w -pady 2 \
1339	4,0 $inner.edges -cspan 2 -anchor w -pady 2 \
1340	5,0 $inner.opacity_l -anchor w -pady 2 \
1341	5,1 $inner.opacity -fill x -pady 2
1342
1343	blt::table configure $inner r* c* -resize none
1344	blt::table configure $inner r7 c1 -resize expand
1345	}
1346
1347	itcl::body Rappture::VtkMeshViewer::BuildAxisTab {} {
1348
1349	set fg [option get $itk_component(hull) font Font]
1350	#set bfg [option get $itk_component(hull) boldFont Font]
1351
1352	set inner [$itk_component(main) insert end \
1353	-title "Axis Settings" \
1354	-icon [Rappture::icon axis2]]
1355	$inner configure -borderwidth 4
1356
1357	checkbutton $inner.visible \
1358	-text "Axes" \
1359	-variable [itcl::scope _settings(-axesvisible)] \
1360	-command [itcl::code $this AdjustSetting -axesvisible] \
1361	-font "Arial 9"
1362
1363	checkbutton $inner.labels \
1364	-text "Axis Labels" \
1365	-variable [itcl::scope _settings(-axislabels)] \
1366	-command [itcl::code $this AdjustSetting -axislabels] \
1367	-font "Arial 9"
1368	label $inner.grid_l -text "Grid" -font "Arial 9"
1369	checkbutton $inner.xgrid \
1370	-text "X" \
1371	-variable [itcl::scope _settings(-xgrid)] \
1372	-command [itcl::code $this AdjustSetting -xgrid] \
1373	-font "Arial 9"
1374	checkbutton $inner.ygrid \
1375	-text "Y" \
1376	-variable [itcl::scope _settings(-ygrid)] \
1377	-command [itcl::code $this AdjustSetting -ygrid] \
1378	-font "Arial 9"
1379	checkbutton $inner.zgrid \
1380	-text "Z" \
1381	-variable [itcl::scope _settings(-zgrid)] \
1382	-command [itcl::code $this AdjustSetting -zgrid] \
1383	-font "Arial 9"
1384	checkbutton $inner.minorticks \
1385	-text "Minor Ticks" \
1386	-variable [itcl::scope _settings(-axisminorticks)] \
1387	-command [itcl::code $this AdjustSetting -axisminorticks] \
1388	-font "Arial 9"
1389
1390	label $inner.mode_l -text "Mode" -font "Arial 9"
1391
1392	itk_component add axismode {
1393	Rappture::Combobox $inner.mode -width 10 -editable no
1394	}
1395	$inner.mode choices insert end \
1396	"static_triad" "static" \
1397	"closest_triad" "closest" \
1398	"furthest_triad" "farthest" \
1399	"outer_edges" "outer"
1400	$itk_component(axismode) value "static"
1401	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1402
1403	blt::table $inner \
1404	0,0 $inner.visible -anchor w -cspan 4 \
1405	1,0 $inner.labels -anchor w -cspan 4 \
1406	2,0 $inner.minorticks -anchor w -cspan 4 \
1407	4,0 $inner.grid_l -anchor w \
1408	4,1 $inner.xgrid -anchor w \
1409	4,2 $inner.ygrid -anchor w \
1410	4,3 $inner.zgrid -anchor w \
1411	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1412	5,1 $inner.mode -fill x -cspan 3
1413
1414	blt::table configure $inner r* c* -resize none
1415	blt::table configure $inner r7 c6 -resize expand
1416	blt::table configure $inner r3 -height 0.125i
1417	}
1418
1419	itcl::body Rappture::VtkMeshViewer::BuildCameraTab {} {
1420	set inner [$itk_component(main) insert end \
1421	-title "Camera Settings" \
1422	-icon [Rappture::icon camera]]
1423	$inner configure -borderwidth 4
1424
1425	label $inner.view_l -text "view" -font "Arial 9"
1426	set f [frame $inner.view]
1427	foreach side { front back left right top bottom } {
1428	button $f.$side -image [Rappture::icon view$side] \
1429	-command [itcl::code $this SetOrientation $side]
1430	Rappture::Tooltip::for $f.$side "Change the view to $side"
1431	pack $f.$side -side left
1432	}
1433
1434	blt::table $inner \
1435	0,0 $inner.view_l -anchor e -pady 2 \
1436	0,1 $inner.view -anchor w -pady 2
1437
1438	set labels { qx qy qz qw xpan ypan zoom }
1439	set row 1
1440	foreach tag $labels {
1441	label $inner.${tag}label -text $tag -font "Arial 9"
1442	entry $inner.${tag} -font "Arial 9" -bg white \
1443	-textvariable [itcl::scope _view(-$tag)]
1444	bind $inner.${tag} <Return> \
1445	[itcl::code $this camera set -${tag}]
1446	bind $inner.${tag} <KP_Enter> \
1447	[itcl::code $this camera set -${tag}]
1448	blt::table $inner \
1449	$row,0 $inner.${tag}label -anchor e -pady 2 \
1450	$row,1 $inner.${tag} -anchor w -pady 2
1451	blt::table configure $inner r$row -resize none
1452	incr row
1453	}
1454	checkbutton $inner.ortho \
1455	-text "Orthographic Projection" \
1456	-variable [itcl::scope _view(-ortho)] \
1457	-command [itcl::code $this camera set -ortho] \
1458	-font "Arial 9"
1459	blt::table $inner \
1460	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1461	blt::table configure $inner r$row -resize none
1462	incr row
1463
1464	blt::table configure $inner c* r* -resize none
1465	blt::table configure $inner c2 -resize expand
1466	blt::table configure $inner r$row -resize expand
1467	}
1468
1469	#
1470	# camera --
1471	#
1472	itcl::body Rappture::VtkMeshViewer::camera {option args} {
1473	switch -- $option {
1474	"show" {
1475	puts [array get _view]
1476	}
1477	"set" {
1478	set what [lindex $args 0]
1479	set x $_view($what)
1480	set code [catch { string is double $x } result]
1481	if { $code != 0 \|\| !$result } {
1482	return
1483	}
1484	switch -- $what {
1485	"-ortho" {
1486	if {$_view($what)} {
1487	SendCmd "camera mode ortho"
1488	} else {
1489	SendCmd "camera mode persp"
1490	}
1491	}
1492	"-xpan" - "-ypan" {
1493	PanCamera
1494	}
1495	"-qx" - "-qy" - "-qz" - "-qw" {
1496	set q [ViewToQuaternion]
1497	$_arcball quaternion $q
1498	EventuallyRotate $q
1499	}
1500	"-zoom" {
1501	SendCmd "camera zoom $_view($what)"
1502	}
1503	}
1504	}
1505	}
1506	}
1507
1508	itcl::body Rappture::VtkMeshViewer::GetVtkData { args } {
1509	set bytes ""
1510	foreach dataobj [get] {
1511	set contents [$dataobj vtkdata -full]
1512	append bytes "$contents\n"
1513	}
1514	return [list .vtk $bytes]
1515	}
1516
1517	itcl::body Rappture::VtkMeshViewer::GetImage { args } {
1518	if { [image width $_image(download)] > 0 &&
1519	[image height $_image(download)] > 0 } {
1520	set bytes [$_image(download) data -format "jpeg -quality 100"]
1521	set bytes [Rappture::encoding::decode -as b64 $bytes]
1522	return [list .jpg $bytes]
1523	}
1524	return ""
1525	}
1526
1527	itcl::body Rappture::VtkMeshViewer::BuildDownloadPopup { popup command } {
1528	Rappture::Balloon $popup \
1529	-title "[Rappture::filexfer::label downloadWord] as..."
1530	set inner [$popup component inner]
1531	label $inner.summary -text "" -anchor w
1532	radiobutton $inner.vtk_button -text "VTK data file" \
1533	-variable [itcl::scope _downloadPopup(format)] \
1534	-font "Helvetica 9 " \
1535	-value vtk
1536	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1537	radiobutton $inner.image_button -text "Image File" \
1538	-variable [itcl::scope _downloadPopup(format)] \
1539	-value image
1540	Rappture::Tooltip::for $inner.image_button \
1541	"Save as digital image."
1542
1543	button $inner.ok -text "Save" \
1544	-highlightthickness 0 -pady 2 -padx 3 \
1545	-command $command \
1546	-compound left \
1547	-image [Rappture::icon download]
1548
1549	button $inner.cancel -text "Cancel" \
1550	-highlightthickness 0 -pady 2 -padx 3 \
1551	-command [list $popup deactivate] \
1552	-compound left \
1553	-image [Rappture::icon cancel]
1554
1555	blt::table $inner \
1556	0,0 $inner.summary -cspan 2 \
1557	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1558	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1559	4,1 $inner.cancel -width .9i -fill y \
1560	4,0 $inner.ok -padx 2 -width .9i -fill y
1561	blt::table configure $inner r3 -height 4
1562	blt::table configure $inner r4 -pady 4
1563	raise $inner.image_button
1564	$inner.vtk_button invoke
1565	return $inner
1566	}
1567
1568	itcl::body Rappture::VtkMeshViewer::SetObjectStyle { dataobj } {
1569	# Parse style string.
1570	set tag $dataobj
1571	set type [$dataobj type]
1572
1573	array set style {
1574	-cloudstyle mesh
1575	-color white
1576	-edgecolor black
1577	-edges 1
1578	-lighting 1
1579	-linewidth 1.0
1580	-opacity 1.0
1581	-outline 0
1582	-visible 1
1583	-wireframe 0
1584	}
1585	if { $dataobj != $_first } {
1586	set style(-wireframe) 1
1587	}
1588	if {$type == "cloud"} {
1589	set style(-cloudstyle) points
1590	set style(-edges) 0
1591	set style(-edgecolor) white
1592	}
1593	array set style [$dataobj hints style]
1594
1595	if {[$dataobj hints color] != ""} {
1596	set style(-color) [$dataobj hints color]
1597	}
1598	SendCmd "outline add $tag"
1599	SendCmd "outline color [Color2RGB $style(-color)] $tag"
1600	SendCmd "outline visible $style(-outline) $tag"
1601	set _settings(-outline) $style(-outline)
1602
1603	SendCmd "polydata add $tag"
1604	SendCmd "polydata visible $style(-visible) $tag"
1605	set _settings(-polydatavisible) $style(-visible)
1606	SendCmd "polydata cloudstyle $style(-cloudstyle) $tag"
1607	SendCmd "polydata edges $style(-edges) $tag"
1608	set _settings(-polydataedges) $style(-edges)
1609	SendCmd "polydata color [Color2RGB $style(-color)] $tag"
1610	SendCmd "polydata lighting $style(-lighting) $tag"
1611	set _settings(-polydatalighting) $style(-lighting)
1612	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1613	SendCmd "polydata linewidth $style(-linewidth) $tag"
1614	SendCmd "polydata opacity $style(-opacity) $tag"
1615	set _settings(-polydataopacity) $style(-opacity)
1616	set _widget(-polydataopacity) [expr 100.0 * $style(-opacity)]
1617	SendCmd "polydata wireframe $style(-wireframe) $tag"
1618	set _settings(-polydatawireframe) $style(-wireframe)
1619	set havePolyData 1
1620	}
1621
1622	itcl::body Rappture::VtkMeshViewer::IsValidObject { dataobj } {
1623	if {[catch {$dataobj isa Rappture::Mesh} valid] != 0 \|\| !$valid} {
1624	return 0
1625	}
1626	return 1
1627	}
1628
1629	itcl::body Rappture::VtkMeshViewer::SetOrientation { side } {
1630	array set positions {
1631	front "1 0 0 0"
1632	back "0 0 1 0"
1633	left "0.707107 0 -0.707107 0"
1634	right "0.707107 0 0.707107 0"
1635	top "0.707107 -0.707107 0 0"
1636	bottom "0.707107 0.707107 0 0"
1637	}
1638	foreach name { -qw -qx -qy -qz } value $positions($side) {
1639	set _view($name) $value
1640	}
1641	set q [ViewToQuaternion]
1642	$_arcball quaternion $q
1643	SendCmd "camera orient $q"
1644	SendCmd "camera reset"
1645	set _view(-xpan) 0
1646	set _view(-ypan) 0
1647	set _view(-zoom) 1.0
1648	}

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