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source: branches/uiuc_vtk_viewers/gui/scripts/vtkmeshviewer.tcl @ 5033

Last change on this file since 5033 was 4771, checked in by ldelgass, 10 years ago
settings update for streamlines
File size: 54.7 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	if 0 {
848	set f [open /tmp/vtkmesh.vtk "w"]
849	fconfigure $f -translation binary -encoding binary
850	puts -nonewline $f $bytes
851	close $f
852	}
853	set length [string length $bytes]
854	if { $_reportClientInfo } {
855	set info {}
856	lappend info "tool_id" [$dataobj hints toolid]
857	lappend info "tool_name" [$dataobj hints toolname]
858	lappend info "tool_title" [$dataobj hints tooltitle]
859	lappend info "tool_command" [$dataobj hints toolcommand]
860	lappend info "tool_revision" [$dataobj hints toolrevision]
861	lappend info "dataset_label" [$dataobj hints label]
862	lappend info "dataset_size" $length
863	lappend info "dataset_tag" $tag
864	SendCmd "clientinfo [list $info]"
865	}
866	SendCmd "dataset add $tag data follows $length"
867	append _outbuf $bytes
868	set _datasets($tag) 1
869	SetObjectStyle $dataobj
870	}
871	lappend _obj2datasets($dataobj) $tag
872	if { [info exists _obj2ovride($dataobj-raise)] } {
873	SendCmd "dataset visible 1 $tag"
874	EventuallySetPolydataOpacity
875	}
876	}
877	if {"" != $_first} {
878	set location [$_first hints camera]
879	if { $location != "" } {
880	array set view $location
881	}
882
883	foreach axis { x y z } {
884	set label [$_first label ${axis}]
885	if { $label != "" } {
886	SendCmd [list axis name $axis $label]
887	}
888	set units [$_first units ${axis}]
889	if { $units != "" } {
890	SendCmd [list axis units $axis $units]
891	}
892	}
893	}
894	InitSettings -outline
895	if { $_reset } {
896	# These are settings that rely on a dataset being loaded.
897	InitSettings -polydataedges -polydatalighting -polydataopacity \
898	-polydatavisible -polydatawireframe
899
900	#SendCmd "axis lformat all %g"
901
902	$_arcball quaternion [ViewToQuaternion]
903	SendCmd "camera reset"
904	if { $_view(-ortho)} {
905	SendCmd "camera mode ortho"
906	} else {
907	SendCmd "camera mode persp"
908	}
909	DoRotate
910	PanCamera
911	Zoom reset
912	}
913
914	set _reset 0
915	global readyForNextFrame
916	set readyForNextFrame 0; # Don't advance to the next frame
917	# until we get an image.
918
919	# Actually write the commands to the server socket. If it fails, we don't
920	# care. We're finished here.
921	blt::busy hold $itk_component(hull)
922	StopBufferingCommands
923	blt::busy release $itk_component(hull)
924	}
925
926	# ----------------------------------------------------------------------
927	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
928	#
929	# Returns a list of server IDs for the current datasets being displayed. This
930	# is normally a single ID, but it might be a list of IDs if the current data
931	# object has multiple components.
932	# ----------------------------------------------------------------------
933	itcl::body Rappture::VtkMeshViewer::CurrentDatasets {args} {
934	set flag [lindex $args 0]
935	switch -- $flag {
936	"-all" {
937	if { [llength $args] > 1 } {
938	error "CurrentDatasets: can't specify dataobj after \"-all\""
939	}
940	set dlist [get -objects]
941	}
942	"-visible" {
943	if { [llength $args] > 1 } {
944	set dlist {}
945	set args [lrange $args 1 end]
946	foreach dataobj $args {
947	if { [info exists _obj2ovride($dataobj-raise)] } {
948	lappend dlist $dataobj
949	}
950	}
951	} else {
952	set dlist [get -visible]
953	}
954	}
955	default {
956	set dlist $args
957	}
958	}
959	set rlist ""
960	foreach tag $dlist {
961	if { [info exists _datasets($tag)] && $_datasets($tag) } {
962	lappend rlist $tag
963	}
964	}
965	return $rlist
966	}
967
968	# ----------------------------------------------------------------------
969	# USAGE: Zoom in
970	# USAGE: Zoom out
971	# USAGE: Zoom reset
972	#
973	# Called automatically when the user clicks on one of the zoom
974	# controls for this widget. Changes the zoom for the current view.
975	# ----------------------------------------------------------------------
976	itcl::body Rappture::VtkMeshViewer::Zoom {option} {
977	switch -- $option {
978	"in" {
979	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
980	SendCmd "camera zoom $_view(-zoom)"
981	}
982	"out" {
983	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
984	SendCmd "camera zoom $_view(-zoom)"
985	}
986	"reset" {
987	array set _view {
988	-qw 0.853553
989	-qx -0.353553
990	-qy 0.353553
991	-qz 0.146447
992	-xpan 0
993	-ypan 0
994	-zoom 1.0
995	}
996	if { $_first != "" } {
997	set location [$_first hints camera]
998	if { $location != "" } {
999	array set _view $location
1000	}
1001	}
1002	$_arcball quaternion [ViewToQuaternion]
1003	DoRotate
1004	SendCmd "camera reset"
1005	}
1006	}
1007	}
1008
1009	itcl::body Rappture::VtkMeshViewer::PanCamera {} {
1010	set x $_view(-xpan)
1011	set y $_view(-ypan)
1012	SendCmd "camera pan $x $y"
1013	}
1014
1015	# ----------------------------------------------------------------------
1016	# USAGE: Rotate click <x> <y>
1017	# USAGE: Rotate drag <x> <y>
1018	# USAGE: Rotate release <x> <y>
1019	#
1020	# Called automatically when the user clicks/drags/releases in the
1021	# plot area. Moves the plot according to the user's actions.
1022	# ----------------------------------------------------------------------
1023	itcl::body Rappture::VtkMeshViewer::Rotate {option x y} {
1024	switch -- $option {
1025	"click" {
1026	$itk_component(view) configure -cursor fleur
1027	set _click(x) $x
1028	set _click(y) $y
1029	}
1030	"drag" {
1031	if {[array size _click] == 0} {
1032	Rotate click $x $y
1033	} else {
1034	set w [winfo width $itk_component(view)]
1035	set h [winfo height $itk_component(view)]
1036	if {$w <= 0 \|\| $h <= 0} {
1037	return
1038	}
1039
1040	if {[catch {
1041	# this fails sometimes for no apparent reason
1042	set dx [expr {double($x-$_click(x))/$w}]
1043	set dy [expr {double($y-$_click(y))/$h}]
1044	}]} {
1045	return
1046	}
1047	if { $dx == 0 && $dy == 0 } {
1048	return
1049	}
1050	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1051	EventuallyRotate $q
1052	set _click(x) $x
1053	set _click(y) $y
1054	}
1055	}
1056	"release" {
1057	Rotate drag $x $y
1058	$itk_component(view) configure -cursor ""
1059	catch {unset _click}
1060	}
1061	default {
1062	error "bad option \"$option\": should be click, drag, release"
1063	}
1064	}
1065	}
1066
1067	itcl::body Rappture::VtkMeshViewer::Pick {x y} {
1068	foreach tag [CurrentDatasets -visible] {
1069	SendCmd "dataset getscalar pixel $x $y $tag"
1070	}
1071	}
1072
1073	# ----------------------------------------------------------------------
1074	# USAGE: $this Pan click x y
1075	# $this Pan drag x y
1076	# $this Pan release x y
1077	#
1078	# Called automatically when the user clicks on one of the zoom
1079	# controls for this widget. Changes the zoom for the current view.
1080	# ----------------------------------------------------------------------
1081	itcl::body Rappture::VtkMeshViewer::Pan {option x y} {
1082	switch -- $option {
1083	"set" {
1084	set w [winfo width $itk_component(view)]
1085	set h [winfo height $itk_component(view)]
1086	set x [expr $x / double($w)]
1087	set y [expr $y / double($h)]
1088	set _view(-xpan) [expr $_view(-xpan) + $x]
1089	set _view(-ypan) [expr $_view(-ypan) + $y]
1090	PanCamera
1091	return
1092	}
1093	"click" {
1094	set _click(x) $x
1095	set _click(y) $y
1096	$itk_component(view) configure -cursor hand1
1097	}
1098	"drag" {
1099	if { ![info exists _click(x)] } {
1100	set _click(x) $x
1101	}
1102	if { ![info exists _click(y)] } {
1103	set _click(y) $y
1104	}
1105	set w [winfo width $itk_component(view)]
1106	set h [winfo height $itk_component(view)]
1107	set dx [expr ($_click(x) - $x)/double($w)]
1108	set dy [expr ($_click(y) - $y)/double($h)]
1109	set _click(x) $x
1110	set _click(y) $y
1111	set _view(-xpan) [expr $_view(-xpan) - $dx]
1112	set _view(-ypan) [expr $_view(-ypan) - $dy]
1113	PanCamera
1114	}
1115	"release" {
1116	Pan drag $x $y
1117	$itk_component(view) configure -cursor ""
1118	}
1119	default {
1120	error "unknown option \"$option\": should set, click, drag, or release"
1121	}
1122	}
1123	}
1124
1125	# ----------------------------------------------------------------------
1126	# USAGE: InitSettings <what> ?<value>?
1127	#
1128	# Used internally to update rendering settings whenever parameters
1129	# change in the popup settings panel. Sends the new settings off
1130	# to the back end.
1131	# ----------------------------------------------------------------------
1132	itcl::body Rappture::VtkMeshViewer::InitSettings { args } {
1133	foreach setting $args {
1134	AdjustSetting $setting
1135	}
1136	}
1137
1138	#
1139	# AdjustSetting --
1140	#
1141	# Changes/updates a specific setting in the widget. There are
1142	# usually user-setable option. Commands are sent to the render
1143	# server.
1144	#
1145	itcl::body Rappture::VtkMeshViewer::AdjustSetting {what {value ""}} {
1146	if { ![isconnected] } {
1147	return
1148	}
1149	switch -- $what {
1150	"-outline" {
1151	set bool $_settings($what)
1152	# Only display a outline for the currently visible sets.
1153	SendCmd "outline visible 0"
1154	foreach dataset [CurrentDatasets -visible] {
1155	SendCmd "outline visible $bool $dataset"
1156	}
1157	}
1158	"-polydataopacity" {
1159	set _settings($what) [expr $_widget($what) * 0.01]
1160	EventuallySetPolydataOpacity
1161	}
1162	"-polydatawireframe" {
1163	set bool $_settings($what)
1164	SendCmd "polydata wireframe $bool"
1165	}
1166	"-polydatavisible" {
1167	set bool $_settings($what)
1168	# Only change visibility of data sets marked "visible".
1169	foreach dataset [CurrentDatasets -visible] {
1170	SendCmd "polydata visible $bool $dataset"
1171	}
1172	}
1173	"-polydatalighting" {
1174	set bool $_settings($what)
1175	SendCmd "polydata lighting $bool"
1176	}
1177	"-polydataedges" {
1178	set bool $_settings($what)
1179	SendCmd "polydata edges $bool"
1180	}
1181	"-axesvisible" {
1182	set bool $_settings($what)
1183	SendCmd "axis visible all $bool"
1184	}
1185	"-axislabels" {
1186	set bool $_settings($what)
1187	SendCmd "axis labels all $bool"
1188	}
1189	"-axisminorticks" {
1190	set bool $_settings($what)
1191	SendCmd "axis minticks all $bool"
1192	}
1193	"-xgrid" {
1194	set bool $_settings($what)
1195	SendCmd "axis grid x $bool"
1196	}
1197	"-ygrid" {
1198	set bool $_settings($what)
1199	SendCmd "axis grid y $bool"
1200	}
1201	"-zgrid" {
1202	set bool $_settings($what)
1203	SendCmd "axis grid z $bool"
1204	}
1205	"-axismode" {
1206	set mode [$itk_component(axismode) value]
1207	set mode [$itk_component(axismode) translate $mode]
1208	SendCmd "axis flymode $mode"
1209	}
1210	default {
1211	error "don't know how to fix $what"
1212	}
1213	}
1214	}
1215
1216	# ----------------------------------------------------------------------
1217	# CONFIGURATION OPTION: -plotbackground
1218	# ----------------------------------------------------------------------
1219	itcl::configbody Rappture::VtkMeshViewer::plotbackground {
1220	if { [isconnected] } {
1221	set rgb [Color2RGB $itk_option(-plotbackground)]
1222	SendCmd "screen bgcolor $rgb"
1223	}
1224	}
1225
1226	# ----------------------------------------------------------------------
1227	# CONFIGURATION OPTION: -plotforeground
1228	# ----------------------------------------------------------------------
1229	itcl::configbody Rappture::VtkMeshViewer::plotforeground {
1230	if { [isconnected] } {
1231	set rgb [Color2RGB $itk_option(-plotforeground)]
1232	SendCmd "axis color all $rgb"
1233	SendCmd "outline color $rgb"
1234	}
1235	}
1236
1237	itcl::body Rappture::VtkMeshViewer::limits { dataobj } {
1238	set tag $dataobj
1239	if { ![info exists _limits($tag)] } {
1240	set data [$dataobj vtkdata -full]
1241	if { $data == "" } {
1242	continue
1243	}
1244	set tmpfile file[pid].vtk
1245	set f [open "$tmpfile" "w"]
1246	fconfigure $f -translation binary -encoding binary
1247	puts $f $data
1248	close $f
1249	set reader [vtkDataSetReader $tag-xvtkDataSetReader]
1250	$reader SetFileName $tmpfile
1251	$reader Update
1252	file delete $tmpfile
1253	set output [$reader GetOutput]
1254	set _limits($tag) [$output GetBounds]
1255	rename $output ""
1256	rename $reader ""
1257	}
1258	foreach { xMin xMax yMin yMax zMin zMax} $_limits($tag) break
1259	if {![info exists limits(xmin)] \|\| $limits(xmin) > $xMin} {
1260	set limits(xmin) $xMin
1261	}
1262	if {![info exists limits(xmax)] \|\| $limits(xmax) < $xMax} {
1263	set limits(xmax) $xMax
1264	}
1265	if {![info exists limits(ymin)] \|\| $limits(ymin) > $yMin} {
1266	set limits(ymin) $xMin
1267	}
1268	if {![info exists limits(ymax)] \|\| $limits(ymax) < $yMax} {
1269	set limits(ymax) $yMax
1270	}
1271	if {![info exists limits(zmin)] \|\| $limits(zmin) > $zMin} {
1272	set limits(zmin) $zMin
1273	}
1274	if {![info exists limits(zmax)] \|\| $limits(zmax) < $zMax} {
1275	set limits(zmax) $zMax
1276	}
1277
1278	return [array get limits]
1279	}
1280
1281	itcl::body Rappture::VtkMeshViewer::BuildPolydataTab {} {
1282
1283	set fg [option get $itk_component(hull) font Font]
1284	#set bfg [option get $itk_component(hull) boldFont Font]
1285
1286	set inner [$itk_component(main) insert end \
1287	-title "Mesh Settings" \
1288	-icon [Rappture::icon mesh]]
1289	$inner configure -borderwidth 4
1290
1291	checkbutton $inner.mesh \
1292	-text "Show Mesh" \
1293	-variable [itcl::scope _settings(-polydatavisible)] \
1294	-command [itcl::code $this AdjustSetting -polydatavisible] \
1295	-font "Arial 9" -anchor w
1296
1297	checkbutton $inner.outline \
1298	-text "Show Outline" \
1299	-variable [itcl::scope _settings(-outline)] \
1300	-command [itcl::code $this AdjustSetting -outline] \
1301	-font "Arial 9" -anchor w
1302
1303	checkbutton $inner.wireframe \
1304	-text "Show Wireframe" \
1305	-variable [itcl::scope _settings(-polydatawireframe)] \
1306	-command [itcl::code $this AdjustSetting -polydatawireframe] \
1307	-font "Arial 9" -anchor w
1308
1309	checkbutton $inner.lighting \
1310	-text "Enable Lighting" \
1311	-variable [itcl::scope _settings(-polydatalighting)] \
1312	-command [itcl::code $this AdjustSetting -polydatalighting] \
1313	-font "Arial 9" -anchor w
1314
1315	checkbutton $inner.edges \
1316	-text "Show Edges" \
1317	-variable [itcl::scope _settings(-polydataedges)] \
1318	-command [itcl::code $this AdjustSetting -polydataedges] \
1319	-font "Arial 9" -anchor w
1320
1321	itk_component add field_l {
1322	label $inner.field_l -text "Field" -font "Arial 9"
1323	} {
1324	ignore -font
1325	}
1326	itk_component add field {
1327	Rappture::Combobox $inner.field -width 10 -editable no
1328	}
1329	bind $inner.field <<Value>> \
1330	[itcl::code $this AdjustSetting -field]
1331
1332	label $inner.opacity_l -text "Opacity" -font "Arial 9" -anchor w
1333	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1334	-variable [itcl::scope _widget(-polydataopacity)] \
1335	-width 10 \
1336	-showvalue off \
1337	-command [itcl::code $this AdjustSetting -polydataopacity]
1338	$inner.opacity set [expr $_settings(-polydataopacity) * 100.0]
1339
1340	blt::table $inner \
1341	0,0 $inner.mesh -cspan 2 -anchor w -pady 2 \
1342	1,0 $inner.outline -cspan 2 -anchor w -pady 2 \
1343	2,0 $inner.wireframe -cspan 2 -anchor w -pady 2 \
1344	3,0 $inner.lighting -cspan 2 -anchor w -pady 2 \
1345	4,0 $inner.edges -cspan 2 -anchor w -pady 2 \
1346	5,0 $inner.opacity_l -anchor w -pady 2 \
1347	5,1 $inner.opacity -fill x -pady 2
1348
1349	blt::table configure $inner r* c* -resize none
1350	blt::table configure $inner r7 c1 -resize expand
1351	}
1352
1353	itcl::body Rappture::VtkMeshViewer::BuildAxisTab {} {
1354
1355	set fg [option get $itk_component(hull) font Font]
1356	#set bfg [option get $itk_component(hull) boldFont Font]
1357
1358	set inner [$itk_component(main) insert end \
1359	-title "Axis Settings" \
1360	-icon [Rappture::icon axis2]]
1361	$inner configure -borderwidth 4
1362
1363	checkbutton $inner.visible \
1364	-text "Axes" \
1365	-variable [itcl::scope _settings(-axesvisible)] \
1366	-command [itcl::code $this AdjustSetting -axesvisible] \
1367	-font "Arial 9"
1368
1369	checkbutton $inner.labels \
1370	-text "Axis Labels" \
1371	-variable [itcl::scope _settings(-axislabels)] \
1372	-command [itcl::code $this AdjustSetting -axislabels] \
1373	-font "Arial 9"
1374	label $inner.grid_l -text "Grid" -font "Arial 9"
1375	checkbutton $inner.xgrid \
1376	-text "X" \
1377	-variable [itcl::scope _settings(-xgrid)] \
1378	-command [itcl::code $this AdjustSetting -xgrid] \
1379	-font "Arial 9"
1380	checkbutton $inner.ygrid \
1381	-text "Y" \
1382	-variable [itcl::scope _settings(-ygrid)] \
1383	-command [itcl::code $this AdjustSetting -ygrid] \
1384	-font "Arial 9"
1385	checkbutton $inner.zgrid \
1386	-text "Z" \
1387	-variable [itcl::scope _settings(-zgrid)] \
1388	-command [itcl::code $this AdjustSetting -zgrid] \
1389	-font "Arial 9"
1390	checkbutton $inner.minorticks \
1391	-text "Minor Ticks" \
1392	-variable [itcl::scope _settings(-axisminorticks)] \
1393	-command [itcl::code $this AdjustSetting -axisminorticks] \
1394	-font "Arial 9"
1395
1396	label $inner.mode_l -text "Mode" -font "Arial 9"
1397
1398	itk_component add axismode {
1399	Rappture::Combobox $inner.mode -width 10 -editable no
1400	}
1401	$inner.mode choices insert end \
1402	"static_triad" "static" \
1403	"closest_triad" "closest" \
1404	"furthest_triad" "farthest" \
1405	"outer_edges" "outer"
1406	$itk_component(axismode) value "static"
1407	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1408
1409	blt::table $inner \
1410	0,0 $inner.visible -anchor w -cspan 4 \
1411	1,0 $inner.labels -anchor w -cspan 4 \
1412	2,0 $inner.minorticks -anchor w -cspan 4 \
1413	4,0 $inner.grid_l -anchor w \
1414	4,1 $inner.xgrid -anchor w \
1415	4,2 $inner.ygrid -anchor w \
1416	4,3 $inner.zgrid -anchor w \
1417	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1418	5,1 $inner.mode -fill x -cspan 3
1419
1420	blt::table configure $inner r* c* -resize none
1421	blt::table configure $inner r7 c6 -resize expand
1422	blt::table configure $inner r3 -height 0.125i
1423	}
1424
1425	itcl::body Rappture::VtkMeshViewer::BuildCameraTab {} {
1426	set inner [$itk_component(main) insert end \
1427	-title "Camera Settings" \
1428	-icon [Rappture::icon camera]]
1429	$inner configure -borderwidth 4
1430
1431	label $inner.view_l -text "view" -font "Arial 9"
1432	set f [frame $inner.view]
1433	foreach side { front back left right top bottom } {
1434	button $f.$side -image [Rappture::icon view$side] \
1435	-command [itcl::code $this SetOrientation $side]
1436	Rappture::Tooltip::for $f.$side "Change the view to $side"
1437	pack $f.$side -side left
1438	}
1439
1440	blt::table $inner \
1441	0,0 $inner.view_l -anchor e -pady 2 \
1442	0,1 $inner.view -anchor w -pady 2
1443	blt::table configure $inner r0 -resize none
1444
1445	set labels { qx qy qz qw xpan ypan zoom }
1446	set row 1
1447	foreach tag $labels {
1448	label $inner.${tag}label -text $tag -font "Arial 9"
1449	entry $inner.${tag} -font "Arial 9" -bg white \
1450	-textvariable [itcl::scope _view(-$tag)]
1451	bind $inner.${tag} <Return> \
1452	[itcl::code $this camera set -${tag}]
1453	bind $inner.${tag} <KP_Enter> \
1454	[itcl::code $this camera set -${tag}]
1455	blt::table $inner \
1456	$row,0 $inner.${tag}label -anchor e -pady 2 \
1457	$row,1 $inner.${tag} -anchor w -pady 2
1458	blt::table configure $inner r$row -resize none
1459	incr row
1460	}
1461	checkbutton $inner.ortho \
1462	-text "Orthographic Projection" \
1463	-variable [itcl::scope _view(-ortho)] \
1464	-command [itcl::code $this camera set -ortho] \
1465	-font "Arial 9"
1466	blt::table $inner \
1467	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1468	blt::table configure $inner r$row -resize none
1469	incr row
1470
1471	blt::table configure $inner c* -resize none
1472	blt::table configure $inner c2 -resize expand
1473	blt::table configure $inner r$row -resize expand
1474	}
1475
1476	#
1477	# camera --
1478	#
1479	itcl::body Rappture::VtkMeshViewer::camera {option args} {
1480	switch -- $option {
1481	"show" {
1482	puts [array get _view]
1483	}
1484	"set" {
1485	set what [lindex $args 0]
1486	set x $_view($what)
1487	set code [catch { string is double $x } result]
1488	if { $code != 0 \|\| !$result } {
1489	return
1490	}
1491	switch -- $what {
1492	"-ortho" {
1493	if {$_view($what)} {
1494	SendCmd "camera mode ortho"
1495	} else {
1496	SendCmd "camera mode persp"
1497	}
1498	}
1499	"-xpan" - "-ypan" {
1500	PanCamera
1501	}
1502	"-qx" - "-qy" - "-qz" - "-qw" {
1503	set q [ViewToQuaternion]
1504	$_arcball quaternion $q
1505	EventuallyRotate $q
1506	}
1507	"-zoom" {
1508	SendCmd "camera zoom $_view($what)"
1509	}
1510	}
1511	}
1512	}
1513	}
1514
1515	itcl::body Rappture::VtkMeshViewer::GetVtkData { args } {
1516	set bytes ""
1517	foreach dataobj [get] {
1518	set contents [$dataobj vtkdata -full]
1519	append bytes "$contents\n"
1520	}
1521	return [list .vtk $bytes]
1522	}
1523
1524	itcl::body Rappture::VtkMeshViewer::GetImage { args } {
1525	if { [image width $_image(download)] > 0 &&
1526	[image height $_image(download)] > 0 } {
1527	set bytes [$_image(download) data -format "jpeg -quality 100"]
1528	set bytes [Rappture::encoding::decode -as b64 $bytes]
1529	return [list .jpg $bytes]
1530	}
1531	return ""
1532	}
1533
1534	itcl::body Rappture::VtkMeshViewer::BuildDownloadPopup { popup command } {
1535	Rappture::Balloon $popup \
1536	-title "[Rappture::filexfer::label downloadWord] as..."
1537	set inner [$popup component inner]
1538	label $inner.summary -text "" -anchor w
1539	radiobutton $inner.vtk_button -text "VTK data file" \
1540	-variable [itcl::scope _downloadPopup(format)] \
1541	-font "Helvetica 9 " \
1542	-value vtk
1543	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1544	radiobutton $inner.image_button -text "Image File" \
1545	-variable [itcl::scope _downloadPopup(format)] \
1546	-value image
1547	Rappture::Tooltip::for $inner.image_button \
1548	"Save as digital image."
1549
1550	button $inner.ok -text "Save" \
1551	-highlightthickness 0 -pady 2 -padx 3 \
1552	-command $command \
1553	-compound left \
1554	-image [Rappture::icon download]
1555
1556	button $inner.cancel -text "Cancel" \
1557	-highlightthickness 0 -pady 2 -padx 3 \
1558	-command [list $popup deactivate] \
1559	-compound left \
1560	-image [Rappture::icon cancel]
1561
1562	blt::table $inner \
1563	0,0 $inner.summary -cspan 2 \
1564	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1565	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1566	4,1 $inner.cancel -width .9i -fill y \
1567	4,0 $inner.ok -padx 2 -width .9i -fill y
1568	blt::table configure $inner r3 -height 4
1569	blt::table configure $inner r4 -pady 4
1570	raise $inner.image_button
1571	$inner.vtk_button invoke
1572	return $inner
1573	}
1574
1575	itcl::body Rappture::VtkMeshViewer::SetObjectStyle { dataobj } {
1576	# Parse style string.
1577	set tag $dataobj
1578	set type [$dataobj type]
1579
1580	array set style {
1581	-cloudstyle mesh
1582	-color white
1583	-edgecolor black
1584	-edges 1
1585	-lighting 1
1586	-linewidth 1.0
1587	-opacity 1.0
1588	-outline 0
1589	-visible 1
1590	-wireframe 0
1591	}
1592	if { $dataobj != $_first } {
1593	set style(-wireframe) 1
1594	}
1595	if {$type == "cloud"} {
1596	set style(-cloudstyle) points
1597	set style(-edges) 0
1598	set style(-edgecolor) white
1599	}
1600	array set style [$dataobj hints style]
1601
1602	if {[$dataobj hints color] != ""} {
1603	set style(-color) [$dataobj hints color]
1604	}
1605	SendCmd "outline add $tag"
1606	SendCmd "outline color [Color2RGB $style(-color)] $tag"
1607	SendCmd "outline visible $style(-outline) $tag"
1608	set _settings(-outline) $style(-outline)
1609
1610	SendCmd "polydata add $tag"
1611	SendCmd "polydata visible $style(-visible) $tag"
1612	set _settings(-polydatavisible) $style(-visible)
1613	SendCmd "polydata cloudstyle $style(-cloudstyle) $tag"
1614	SendCmd "polydata edges $style(-edges) $tag"
1615	set _settings(-polydataedges) $style(-edges)
1616	SendCmd "polydata color [Color2RGB $style(-color)] $tag"
1617	SendCmd "polydata lighting $style(-lighting) $tag"
1618	set _settings(-polydatalighting) $style(-lighting)
1619	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1620	SendCmd "polydata linewidth $style(-linewidth) $tag"
1621	SendCmd "polydata opacity $style(-opacity) $tag"
1622	set _settings(-polydataopacity) $style(-opacity)
1623	set _widget(-polydataopacity) [expr 100.0 * $style(-opacity)]
1624	SendCmd "polydata wireframe $style(-wireframe) $tag"
1625	set _settings(-polydatawireframe) $style(-wireframe)
1626	set havePolyData 1
1627	}
1628
1629	itcl::body Rappture::VtkMeshViewer::IsValidObject { dataobj } {
1630	if {[catch {$dataobj isa Rappture::Mesh} valid] != 0 \|\| !$valid} {
1631	return 0
1632	}
1633	return 1
1634	}
1635
1636	itcl::body Rappture::VtkMeshViewer::SetOrientation { side } {
1637	array set positions {
1638	front "1 0 0 0"
1639	back "0 0 1 0"
1640	left "0.707107 0 -0.707107 0"
1641	right "0.707107 0 0.707107 0"
1642	top "0.707107 -0.707107 0 0"
1643	bottom "0.707107 0.707107 0 0"
1644	}
1645	foreach name { -qw -qx -qy -qz } value $positions($side) {
1646	set _view($name) $value
1647	}
1648	set q [ViewToQuaternion]
1649	$_arcball quaternion $q
1650	SendCmd "camera orient $q"
1651	SendCmd "camera reset"
1652	set _view(-xpan) 0
1653	set _view(-ypan) 0
1654	set _view(-zoom) 1.0
1655	}

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