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source: branches/1.6/gui/scripts/vtksurfaceviewer.tcl @ 6237

Last change on this file since 6237 was 6237, checked in by ldelgass, 9 years ago
merge r6235:6236 from trunk (streamlines scaling)
File size: 78.4 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtksurfaceviewer - Vtk 3D boundary surface viewer
4	#
5	# It connects to the Vtkvis server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2016 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkSurfaceViewer.width 4i widgetDefault
19	option add VtkSurfaceViewercursor crosshair widgetDefault
20	option add *VtkSurfaceViewer.height 4i widgetDefault
21	option add *VtkSurfaceViewer.foreground black widgetDefault
22	option add *VtkSurfaceViewer.controlBackground gray widgetDefault
23	option add *VtkSurfaceViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkSurfaceViewer.plotBackground black widgetDefault
25	option add *VtkSurfaceViewer.plotForeground white widgetDefault
26	option add *VtkSurfaceViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkSurfaceViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkSurfaceViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkSurfaceViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { args } {
42	Rappture::VisViewer::constructor
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63
64	# The following methods are only used by this class.
65	private method AdjustSetting {what {value ""}}
66	private method BuildAxisTab {}
67	private method BuildCameraTab {}
68	private method BuildColormap { name }
69	private method BuildDownloadPopup { widget command }
70	private method BuildSurfaceTab {}
71	private method Combo { option }
72	private method Connect {}
73	private method CurrentDatasets {args}
74	private method Disconnect {}
75	private method DoResize {}
76	private method DoRotate {}
77	private method DrawLegend {}
78	private method EnterLegend { x y }
79	private method EventuallyRequestLegend {}
80	private method EventuallyResize { w h }
81	private method EventuallyRotate { q }
82	private method GetImage { args }
83	private method GetVtkData { args }
84	private method InitSettings { args }
85	private method IsValidObject { dataobj }
86	private method LeaveLegend {}
87	private method MotionLegend { x y }
88	private method Pan {option x y}
89	private method PanCamera {}
90	private method Pick {x y}
91	private method QuaternionToView { q } {
92	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
93	}
94	private method Rebuild {}
95	private method ReceiveDataset { args }
96	private method ReceiveImage { args }
97	private method ReceiveLegend { colormap title vmin vmax size }
98	private method RequestLegend {}
99	private method Rotate {option x y}
100	private method SetCurrentColormap { color }
101	private method SetCurrentFieldName { dataobj }
102	private method SetLegendTip { x y }
103	private method SetObjectStyle { dataobj comp }
104	private method SetOrientation { side }
105	private method UpdateContourList {}
106	private method ViewToQuaternion {} {
107	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
108	}
109	private method Zoom {option}
110
111	private variable _arcball ""
112
113	private variable _dlist ""; # list of data objects
114	private variable _obj2ovride; # maps dataobj => style override
115	private variable _datasets; # contains all the dataobj-component
116	# datasets in the server
117	private variable _colormaps; # contains all the colormaps
118	# in the server.
119	# The name of the current colormap used. The colormap is global to all
120	# heightmaps displayed.
121	private variable _currentColormap ""
122	private variable _currentNumContours -1
123
124	private variable _click; # info used for rotate operations
125	private variable _limits; # autoscale min/max for all axes
126	private variable _view; # view params for 3D view
127	private variable _settings
128	private variable _changed
129	private variable _reset 1; # Connection to server has been reset.
130
131	private variable _first ""; # This is the topmost dataset.
132	private variable _start 0
133	private variable _title ""
134	private variable _isolines
135	private variable _contourList ""
136	private variable _width 0
137	private variable _height 0
138	private variable _resizePending 0
139	private variable _legendPending 0
140	private variable _rotatePending 0
141	private variable _field ""
142	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
143	private variable _fields
144	private variable _curFldName ""
145	private variable _curFldLabel ""
146
147	private common _downloadPopup; # download options from popup
148	private common _hardcopy
149	}
150
151	itk::usual VtkSurfaceViewer {
152	keep -background -foreground -cursor -font
153	keep -plotbackground -plotforeground
154	}
155
156	# ----------------------------------------------------------------------
157	# CONSTRUCTOR
158	# ----------------------------------------------------------------------
159	itcl::body Rappture::VtkSurfaceViewer::constructor {args} {
160	set _serverType "vtkvis"
161	#DebugOn
162
163	# Rebuild event
164	$_dispatcher register !rebuild
165	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
166
167	# Resize event
168	$_dispatcher register !resize
169	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
170
171	# Legend event
172	$_dispatcher register !legend
173	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
174
175	# Rotate event
176	$_dispatcher register !rotate
177	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
178
179	#
180	# Populate parser with commands handle incoming requests
181	#
182	$_parser alias image [itcl::code $this ReceiveImage]
183	$_parser alias legend [itcl::code $this ReceiveLegend]
184	$_parser alias dataset [itcl::code $this ReceiveDataset]
185
186	# Initialize the view to some default parameters.
187	array set _view {
188	-ortho 0
189	-qw 0.853553
190	-qx -0.353553
191	-qy 0.353553
192	-qz 0.146447
193	-xpan 0
194	-ypan 0
195	-zoom 1.0
196	}
197	set _arcball [blt::arcball create 100 100]
198	$_arcball quaternion [ViewToQuaternion]
199
200	array set _settings {
201	-axesvisible 1
202	-axislabels 1
203	-axisminorticks 1
204	-axismode "static"
205	-background black
206	-colormap BCGYR
207	-colormapvisible 1
208	-field "Default"
209	-isolinecolor white
210	-isolinesvisible 0
211	-legendvisible 1
212	-numcontours 10
213	-outline 0
214	-surfaceedges 0
215	-surfacelighting 1
216	-surfaceopacity 100
217	-surfacevisible 1
218	-surfacewireframe 0
219	-xgrid 0
220	-ygrid 0
221	-zgrid 0
222	}
223	array set _changed {
224	-colormap 0
225	-isolinecolor 0
226	-isolinesvisible 0
227	-numcontours 0
228	-outline 0
229	-surfaceedges 0
230	-surfacelighting 0
231	-surfaceopacity 0
232	-surfacevisible 0
233	-surfacewireframe 0
234	}
235
236	itk_component add view {
237	canvas $itk_component(plotarea).view \
238	-highlightthickness 0 -borderwidth 0
239	} {
240	usual
241	ignore -highlightthickness -borderwidth -background
242	}
243
244	itk_component add fieldmenu {
245	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
246	-tearoff 0
247	} {
248	usual
249	ignore -background -foreground -relief -tearoff
250	}
251	set c $itk_component(view)
252	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
253	bind $c <Control-F1> [itcl::code $this ToggleConsole]
254
255	# Fix the scrollregion in case we go off screen
256	$c configure -scrollregion [$c bbox all]
257
258	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
259	set _map(cwidth) -1
260	set _map(cheight) -1
261	set _map(zoom) 1.0
262	set _map(original) ""
263
264	set f [$itk_component(main) component controls]
265	itk_component add reset {
266	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
267	-highlightthickness 0 \
268	-image [Rappture::icon reset-view] \
269	-command [itcl::code $this Zoom reset]
270	} {
271	usual
272	ignore -highlightthickness
273	}
274	pack $itk_component(reset) -side top -padx 2 -pady 2
275	Rappture::Tooltip::for $itk_component(reset) \
276	"Reset the view to the default zoom level"
277
278	itk_component add zoomin {
279	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
280	-highlightthickness 0 \
281	-image [Rappture::icon zoom-in] \
282	-command [itcl::code $this Zoom in]
283	} {
284	usual
285	ignore -highlightthickness
286	}
287	pack $itk_component(zoomin) -side top -padx 2 -pady 2
288	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
289
290	itk_component add zoomout {
291	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
292	-highlightthickness 0 \
293	-image [Rappture::icon zoom-out] \
294	-command [itcl::code $this Zoom out]
295	} {
296	usual
297	ignore -highlightthickness
298	}
299	pack $itk_component(zoomout) -side top -padx 2 -pady 2
300	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
301
302	itk_component add surface {
303	Rappture::PushButton $f.surface \
304	-onimage [Rappture::icon volume-on] \
305	-offimage [Rappture::icon volume-off] \
306	-variable [itcl::scope _settings(-surfacevisible)] \
307	-command [itcl::code $this AdjustSetting -surfacevisible]
308	}
309	$itk_component(surface) select
310	Rappture::Tooltip::for $itk_component(surface) \
311	"Hide the surface"
312	pack $itk_component(surface) -padx 2 -pady 2
313
314	if { [catch {
315	BuildSurfaceTab
316	BuildAxisTab
317	BuildCameraTab
318	} errs] != 0 } {
319	puts stderr errs=$errs
320	}
321
322	# Legend
323	set _image(legend) [image create photo]
324	itk_component add legend {
325	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
326	} {
327	usual
328	ignore -highlightthickness
329	rename -background -plotbackground plotBackground Background
330	}
331
332	# Hack around the Tk panewindow. The problem is that the requested
333	# size of the 3d view isn't set until an image is retrieved from
334	# the server. So the panewindow uses the tiny size.
335	set w 10000
336	pack forget $itk_component(view)
337	blt::table $itk_component(plotarea) \
338	0,0 $itk_component(view) -fill both -reqwidth $w
339	blt::table configure $itk_component(plotarea) c1 -resize none
340
341	# Bindings for rotation via mouse
342	bind $itk_component(view) <ButtonPress-1> \
343	[itcl::code $this Rotate click %x %y]
344	bind $itk_component(view) <B1-Motion> \
345	[itcl::code $this Rotate drag %x %y]
346	bind $itk_component(view) <ButtonRelease-1> \
347	[itcl::code $this Rotate release %x %y]
348
349	# Bindings for panning via mouse
350	bind $itk_component(view) <ButtonPress-2> \
351	[itcl::code $this Pan click %x %y]
352	bind $itk_component(view) <B2-Motion> \
353	[itcl::code $this Pan drag %x %y]
354	bind $itk_component(view) <ButtonRelease-2> \
355	[itcl::code $this Pan release %x %y]
356
357	#bind $itk_component(view) <ButtonRelease-3> \
358	# [itcl::code $this Pick %x %y]
359
360	# Bindings for panning via keyboard
361	bind $itk_component(view) <KeyPress-Left> \
362	[itcl::code $this Pan set -10 0]
363	bind $itk_component(view) <KeyPress-Right> \
364	[itcl::code $this Pan set 10 0]
365	bind $itk_component(view) <KeyPress-Up> \
366	[itcl::code $this Pan set 0 -10]
367	bind $itk_component(view) <KeyPress-Down> \
368	[itcl::code $this Pan set 0 10]
369	bind $itk_component(view) <Shift-KeyPress-Left> \
370	[itcl::code $this Pan set -2 0]
371	bind $itk_component(view) <Shift-KeyPress-Right> \
372	[itcl::code $this Pan set 2 0]
373	bind $itk_component(view) <Shift-KeyPress-Up> \
374	[itcl::code $this Pan set 0 -2]
375	bind $itk_component(view) <Shift-KeyPress-Down> \
376	[itcl::code $this Pan set 0 2]
377
378	# Bindings for zoom via keyboard
379	bind $itk_component(view) <KeyPress-Prior> \
380	[itcl::code $this Zoom out]
381	bind $itk_component(view) <KeyPress-Next> \
382	[itcl::code $this Zoom in]
383
384	bind $itk_component(view) <Enter> "focus $itk_component(view)"
385
386	if {[string equal "x11" [tk windowingsystem]]} {
387	# Bindings for zoom via mouse
388	bind $itk_component(view) <4> [itcl::code $this Zoom out]
389	bind $itk_component(view) <5> [itcl::code $this Zoom in]
390	}
391
392	set _image(download) [image create photo]
393
394	eval itk_initialize $args
395
396	EnableWaitDialog 900
397	Connect
398	}
399
400	# ----------------------------------------------------------------------
401	# DESTRUCTOR
402	# ----------------------------------------------------------------------
403	itcl::body Rappture::VtkSurfaceViewer::destructor {} {
404	Disconnect
405	image delete $_image(plot)
406	image delete $_image(download)
407	catch { blt::arcball destroy $_arcball }
408	}
409
410	itcl::body Rappture::VtkSurfaceViewer::DoResize {} {
411	if { $_width < 2 } {
412	set _width 500
413	}
414	if { $_height < 2 } {
415	set _height 500
416	}
417	set _start [clock clicks -milliseconds]
418	SendCmd "screen size $_width $_height"
419
420	EventuallyRequestLegend
421	set _resizePending 0
422	}
423
424	itcl::body Rappture::VtkSurfaceViewer::DoRotate {} {
425	SendCmd "camera orient [ViewToQuaternion]"
426	set _rotatePending 0
427	}
428
429	itcl::body Rappture::VtkSurfaceViewer::EventuallyRequestLegend {} {
430	if { !$_legendPending } {
431	set _legendPending 1
432	$_dispatcher event -idle !legend
433	}
434	}
435
436	itcl::body Rappture::VtkSurfaceViewer::EventuallyResize { w h } {
437	set _width $w
438	set _height $h
439	$_arcball resize $w $h
440	if { !$_resizePending } {
441	set _resizePending 1
442	$_dispatcher event -after 400 !resize
443	}
444	}
445
446	itcl::body Rappture::VtkSurfaceViewer::EventuallyRotate { q } {
447	QuaternionToView $q
448	if { !$_rotatePending } {
449	set _rotatePending 1
450	$_dispatcher event -after 100 !rotate
451	}
452	}
453
454	# ----------------------------------------------------------------------
455	# USAGE: add <dataobj> ?<settings>?
456	#
457	# Clients use this to add a data object to the plot. The optional
458	# <settings> are used to configure the plot. Allowed settings are
459	# -color, -brightness, -width, -linestyle, and -raise.
460	# ----------------------------------------------------------------------
461	itcl::body Rappture::VtkSurfaceViewer::add {dataobj {settings ""}} {
462	if { ![$dataobj isvalid] } {
463	return; # Object doesn't contain valid data.
464	}
465	array set params {
466	-color auto
467	-width 1
468	-linestyle solid
469	-brightness 0
470	-raise 0
471	-description ""
472	-param ""
473	-type ""
474	}
475	array set params $settings
476	set params(-description) ""
477	set params(-param) ""
478	array set params $settings
479
480	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
481	# can't handle -autocolors yet
482	set params(-color) black
483	}
484	set pos [lsearch -exact $_dlist $dataobj]
485	if {$pos < 0} {
486	lappend _dlist $dataobj
487	}
488	set _obj2ovride($dataobj-color) $params(-color)
489	set _obj2ovride($dataobj-width) $params(-width)
490	set _obj2ovride($dataobj-raise) $params(-raise)
491	$_dispatcher event -idle !rebuild
492	}
493
494	# ----------------------------------------------------------------------
495	# USAGE: delete ?<dataobj1> <dataobj2> ...?
496	#
497	# Clients use this to delete a dataobj from the plot. If no dataobjs
498	# are specified, then all dataobjs are deleted. No data objects are
499	# deleted. They are only removed from the display list.
500	# ----------------------------------------------------------------------
501	itcl::body Rappture::VtkSurfaceViewer::delete {args} {
502	if { [llength $args] == 0} {
503	set args $_dlist
504	}
505	# Delete all specified dataobjs
506	set changed 0
507	foreach dataobj $args {
508	set pos [lsearch -exact $_dlist $dataobj]
509	if { $pos < 0 } {
510	continue; # Don't know anything about it.
511	}
512	# Remove it from the dataobj list.
513	set _dlist [lreplace $_dlist $pos $pos]
514	array unset _obj2ovride $dataobj-*
515	array unset _settings $dataobj-*
516	set changed 1
517	}
518	# If anything changed, then rebuild the plot
519	if { $changed } {
520	$_dispatcher event -idle !rebuild
521	}
522	}
523
524	# ----------------------------------------------------------------------
525	# USAGE: get ?-objects?
526	# USAGE: get ?-visible?
527	# USAGE: get ?-image view?
528	#
529	# Clients use this to query the list of objects being plotted, in
530	# order from bottom to top of this result. The optional "-image"
531	# flag can also request the internal images being shown.
532	# ----------------------------------------------------------------------
533	itcl::body Rappture::VtkSurfaceViewer::get {args} {
534	if {[llength $args] == 0} {
535	set args "-objects"
536	}
537
538	set op [lindex $args 0]
539	switch -- $op {
540	"-objects" {
541	# put the dataobj list in order according to -raise options
542	set dlist {}
543	foreach dataobj $_dlist {
544	if { ![IsValidObject $dataobj] } {
545	continue
546	}
547	if {[info exists _obj2ovride($dataobj-raise)] &&
548	$_obj2ovride($dataobj-raise)} {
549	set dlist [linsert $dlist 0 $dataobj]
550	} else {
551	lappend dlist $dataobj
552	}
553	}
554	return $dlist
555	}
556	"-visible" {
557	set dlist {}
558	foreach dataobj $_dlist {
559	if { ![IsValidObject $dataobj] } {
560	continue
561	}
562	if { ![info exists _obj2ovride($dataobj-raise)] } {
563	# No setting indicates that the object isn't visible.
564	continue
565	}
566	# Otherwise use the -raise parameter to put the object to
567	# the front of the list.
568	if { $_obj2ovride($dataobj-raise) } {
569	set dlist [linsert $dlist 0 $dataobj]
570	} else {
571	lappend dlist $dataobj
572	}
573	}
574	return $dlist
575	}
576	-image {
577	if {[llength $args] != 2} {
578	error "wrong # args: should be \"get -image view\""
579	}
580	switch -- [lindex $args end] {
581	view {
582	return $_image(plot)
583	}
584	default {
585	error "bad image name \"[lindex $args end]\": should be view"
586	}
587	}
588	}
589	default {
590	error "bad option \"$op\": should be -objects or -image"
591	}
592	}
593	}
594
595	# ----------------------------------------------------------------------
596	# USAGE: scale ?<data1> <data2> ...?
597	#
598	# Sets the default limits for the overall plot according to the
599	# limits of the data for all of the given <data> objects. This
600	# accounts for all objects--even those not showing on the screen.
601	# Because of this, the limits are appropriate for all objects as
602	# the user scans through data in the ResultSet viewer.
603	# ----------------------------------------------------------------------
604	itcl::body Rappture::VtkSurfaceViewer::scale { args } {
605	foreach dataobj $args {
606	if { ![$dataobj isvalid] } {
607	continue; # Object doesn't contain valid data.
608	}
609	foreach axis { x y z } {
610	set lim [$dataobj limits $axis]
611	if { ![info exists _limits($axis)] } {
612	set _limits($axis) $lim
613	continue
614	}
615	foreach {min max} $lim break
616	foreach {amin amax} $_limits($axis) break
617	if { $amin > $min } {
618	set amin $min
619	}
620	if { $amax < $max } {
621	set amax $max
622	}
623	set _limits($axis) [list $amin $amax]
624	}
625	foreach { fname lim } [$dataobj fieldlimits] {
626	if { ![info exists _limits($fname)] } {
627	set _limits($fname) $lim
628	continue
629	}
630	foreach {min max} $lim break
631	foreach {fmin fmax} $_limits($fname) break
632	if { $fmin > $min } {
633	set fmin $min
634	}
635	if { $fmax < $max } {
636	set fmax $max
637	}
638	set _limits($fname) [list $fmin $fmax]
639	}
640	}
641	}
642
643	# ----------------------------------------------------------------------
644	# USAGE: download coming
645	# USAGE: download controls <downloadCommand>
646	# USAGE: download now
647	#
648	# Clients use this method to create a downloadable representation
649	# of the plot. Returns a list of the form {ext string}, where
650	# "ext" is the file extension (indicating the type of data) and
651	# "string" is the data itself.
652	# ----------------------------------------------------------------------
653	itcl::body Rappture::VtkSurfaceViewer::download {option args} {
654	switch $option {
655	coming {
656	if {[catch {
657	blt::winop snap $itk_component(plotarea) $_image(download)
658	}]} {
659	$_image(download) configure -width 1 -height 1
660	$_image(download) put #000000
661	}
662	}
663	controls {
664	set popup .vtkviewerdownload
665	if { ![winfo exists .vtkviewerdownload] } {
666	set inner [BuildDownloadPopup $popup [lindex $args 0]]
667	} else {
668	set inner [$popup component inner]
669	}
670	set _downloadPopup(image_controls) $inner.image_frame
671	set num [llength [get]]
672	set num [expr {($num == 1) ? "1 result" : "$num results"}]
673	set word [Rappture::filexfer::label downloadWord]
674	$inner.summary configure -text "$word $num in the following format:"
675	update idletasks ;# Fix initial sizes
676	return $popup
677	}
678	now {
679	set popup .vtkviewerdownload
680	if {[winfo exists .vtkviewerdownload]} {
681	$popup deactivate
682	}
683	switch -- $_downloadPopup(format) {
684	"image" {
685	return [$this GetImage [lindex $args 0]]
686	}
687	"vtk" {
688	return [$this GetVtkData [lindex $args 0]]
689	}
690	}
691	return ""
692	}
693	default {
694	error "bad option \"$option\": should be coming, controls, now"
695	}
696	}
697	}
698
699	# ----------------------------------------------------------------------
700	# USAGE: Connect ?<host:port>,<host:port>...?
701	#
702	# Clients use this method to establish a connection to a new
703	# server, or to reestablish a connection to the previous server.
704	# Any existing connection is automatically closed.
705	# ----------------------------------------------------------------------
706	itcl::body Rappture::VtkSurfaceViewer::Connect {} {
707	set _hosts [GetServerList "vtkvis"]
708	if { "" == $_hosts } {
709	return 0
710	}
711	set _reset 1
712	set result [VisViewer::Connect $_hosts]
713	if { $result } {
714	if { $_reportClientInfo } {
715	# Tell the server the viewer, hub, user and session.
716	# Do this immediately on connect before buffering any commands
717	global env
718
719	set info {}
720	set user "???"
721	if { [info exists env(USER)] } {
722	set user $env(USER)
723	}
724	set session "???"
725	if { [info exists env(SESSION)] } {
726	set session $env(SESSION)
727	}
728	lappend info "version" "$Rappture::version"
729	lappend info "build" "$Rappture::build"
730	lappend info "svnurl" "$Rappture::svnurl"
731	lappend info "installdir" "$Rappture::installdir"
732	lappend info "hub" [exec hostname]
733	lappend info "client" "vtksurfaceviewer"
734	lappend info "user" $user
735	lappend info "session" $session
736	SendCmd "clientinfo [list $info]"
737	}
738
739	set w [winfo width $itk_component(view)]
740	set h [winfo height $itk_component(view)]
741	EventuallyResize $w $h
742	}
743	return $result
744	}
745
746	#
747	# isconnected --
748	#
749	# Indicates if we are currently connected to the visualization server.
750	#
751	itcl::body Rappture::VtkSurfaceViewer::isconnected {} {
752	return [VisViewer::IsConnected]
753	}
754
755	#
756	# disconnect --
757	#
758	itcl::body Rappture::VtkSurfaceViewer::disconnect {} {
759	Disconnect
760	set _reset 1
761	}
762
763	#
764	# Disconnect --
765	#
766	# Clients use this method to disconnect from the current rendering server.
767	#
768	itcl::body Rappture::VtkSurfaceViewer::Disconnect {} {
769	VisViewer::Disconnect
770
771	$_dispatcher cancel !rebuild
772	$_dispatcher cancel !resize
773	$_dispatcher cancel !rotate
774	$_dispatcher cancel !legend
775	# disconnected -- no more data sitting on server
776	array unset _datasets
777	array unset _colormaps
778	}
779
780	# ----------------------------------------------------------------------
781	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
782	#
783	# Invoked automatically whenever the "image" command comes in from
784	# the rendering server. Indicates that binary image data with the
785	# specified <size> will follow.
786	# ----------------------------------------------------------------------
787	itcl::body Rappture::VtkSurfaceViewer::ReceiveImage { args } {
788	array set info {
789	-token "???"
790	-bytes 0
791	-type image
792	}
793	array set info $args
794	set bytes [ReceiveBytes $info(-bytes)]
795	if { $info(-type) == "image" } {
796	if 0 {
797	set f [open "last.ppm" "w"]
798	fconfigure $f -encoding binary
799	puts -nonewline $f $bytes
800	close $f
801	}
802	$_image(plot) configure -data $bytes
803	#set time [clock seconds]
804	#set date [clock format $time]
805	#set w [image width $_image(plot)]
806	#set h [image height $_image(plot)]
807	#puts stderr "$date: received image ${w}x${h} image"
808	if { $_start > 0 } {
809	set finish [clock clicks -milliseconds]
810	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
811	set _start 0
812	}
813	} elseif { $info(type) == "print" } {
814	set tag $this-print-$info(-token)
815	set _hardcopy($tag) $bytes
816	}
817	}
818
819	#
820	# ReceiveDataset --
821	#
822	itcl::body Rappture::VtkSurfaceViewer::ReceiveDataset { args } {
823	if { ![isconnected] } {
824	return
825	}
826	set option [lindex $args 0]
827	switch -- $option {
828	"scalar" {
829	set option [lindex $args 1]
830	switch -- $option {
831	"world" {
832	foreach { x y z value tag } [lrange $args 2 end] break
833	}
834	"pixel" {
835	foreach { x y value tag } [lrange $args 2 end] break
836	}
837	}
838	}
839	"vector" {
840	set option [lindex $args 1]
841	switch -- $option {
842	"world" {
843	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
844	}
845	"pixel" {
846	foreach { x y vx vy vz tag } [lrange $args 2 end] break
847	}
848	}
849	}
850	"names" {
851	foreach { name } [lindex $args 1] {
852	#puts stderr "Dataset: $name"
853	}
854	}
855	default {
856	error "unknown dataset option \"$option\" from server"
857	}
858	}
859	}
860
861	# ----------------------------------------------------------------------
862	# USAGE: Rebuild
863	#
864	# Called automatically whenever something changes that affects the
865	# data in the widget. Clears any existing data and rebuilds the
866	# widget to display new data.
867	# ----------------------------------------------------------------------
868	itcl::body Rappture::VtkSurfaceViewer::Rebuild {} {
869	set w [winfo width $itk_component(view)]
870	set h [winfo height $itk_component(view)]
871	if { $w < 2 \|\| $h < 2 } {
872	update
873	$_dispatcher event -idle !rebuild
874	return
875	}
876
877	# Turn on buffering of commands to the server. We don't want to
878	# be preempted by a server disconnect/reconnect (which automatically
879	# generates a new call to Rebuild).
880	StartBufferingCommands
881
882	if { $_reset } {
883	set _width $w
884	set _height $h
885	$_arcball resize $w $h
886	DoResize
887	# Reset the camera and other view parameters
888	$_arcball quaternion [ViewToQuaternion]
889	if {$_view(-ortho)} {
890	SendCmd "camera mode ortho"
891	} else {
892	SendCmd "camera mode persp"
893	}
894	DoRotate
895	PanCamera
896	set _first ""
897	InitSettings -background \
898	-xgrid -ygrid -zgrid -axismode \
899	-axesvisible -axislabels -axisminorticks
900	#SendCmd "axis lformat all %g"
901	StopBufferingCommands
902	SendCmd "imgflush"
903	StartBufferingCommands
904	}
905	set _first ""
906	SendCmd "dataset visible 0"
907	eval scale $_dlist
908	foreach dataobj [get -objects] {
909	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
910	set _first $dataobj
911	SetCurrentFieldName $dataobj
912	}
913	foreach comp [$dataobj components] {
914	set tag $dataobj-$comp
915	if { ![info exists _datasets($tag)] } {
916	set bytes [$dataobj vtkdata $comp]
917	if 0 {
918	set f [open "/tmp/surface.vtk" "w"]
919	fconfigure $f -translation binary -encoding binary
920	puts -nonewline $f $bytes
921	close $f
922	}
923	set length [string length $bytes]
924	if { $_reportClientInfo } {
925	set info {}
926	lappend info "tool_id" [$dataobj hints toolid]
927	lappend info "tool_name" [$dataobj hints toolname]
928	lappend info "tool_title" [$dataobj hints tooltitle]
929	lappend info "tool_command" [$dataobj hints toolcommand]
930	lappend info "tool_revision" [$dataobj hints toolrevision]
931	lappend info "dataset_label" [$dataobj hints label]
932	lappend info "dataset_size" $length
933	lappend info "dataset_tag" $tag
934	SendCmd "clientinfo [list $info]"
935	}
936	SendCmd "dataset add $tag data follows $length"
937	SendData $bytes
938	set _datasets($tag) 1
939	SetObjectStyle $dataobj $comp
940	}
941	if { [info exists _obj2ovride($dataobj-raise)] } {
942	SendCmd "polydata visible 1 $tag"
943	}
944	}
945	}
946
947	InitSettings -isolinesvisible -surfacevisible -outline
948	if { $_reset } {
949	# These are settings that rely on a dataset being loaded.
950	InitSettings \
951	-surfacelighting \
952	-field \
953	-surfaceedges -surfacelighting -surfaceopacity \
954	-surfacewireframe \
955	-numcontours
956
957	Zoom reset
958	foreach axis { x y z } {
959	set label ""
960	if { $_first != "" } {
961	set label [$_first hints ${axis}label]
962	}
963	if { $label == "" } {
964	set label [string toupper $axis]
965	}
966	# There may be a space in the axis label.
967	SendCmd [list axis name $axis $label]
968	}
969	if { [array size _fields] < 2 } {
970	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
971	}
972	set _reset 0
973	}
974	# Redraw the legend even if we're using the same colormap. The position
975	# of the isolines may have changed because the range of data changed.
976	DrawLegend
977
978	# Actually write the commands to the server socket. If it fails, we don't
979	# care. We're finished here.
980	blt::busy hold $itk_component(hull)
981	StopBufferingCommands; # Turn off buffering and send commands.
982	blt::busy release $itk_component(hull)
983	}
984
985	# ----------------------------------------------------------------------
986	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
987	#
988	# Returns a list of server IDs for the current datasets being displayed. This
989	# is normally a single ID, but it might be a list of IDs if the current data
990	# object has multiple components.
991	# ----------------------------------------------------------------------
992	itcl::body Rappture::VtkSurfaceViewer::CurrentDatasets {args} {
993	set flag [lindex $args 0]
994	switch -- $flag {
995	"-all" {
996	if { [llength $args] > 1 } {
997	error "CurrentDatasets: can't specify dataobj after \"-all\""
998	}
999	set dlist [get -objects]
1000	}
1001	"-visible" {
1002	if { [llength $args] > 1 } {
1003	set dlist {}
1004	set args [lrange $args 1 end]
1005	foreach dataobj $args {
1006	if { [info exists _obj2ovride($dataobj-raise)] } {
1007	lappend dlist $dataobj
1008	}
1009	}
1010	} else {
1011	set dlist [get -visible]
1012	}
1013	}
1014	default {
1015	set dlist $args
1016	}
1017	}
1018	set rlist ""
1019	foreach dataobj $dlist {
1020	foreach comp [$dataobj components] {
1021	set tag $dataobj-$comp
1022	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1023	lappend rlist $tag
1024	}
1025	}
1026	}
1027	return $rlist
1028	}
1029
1030	# ----------------------------------------------------------------------
1031	# USAGE: Zoom in
1032	# USAGE: Zoom out
1033	# USAGE: Zoom reset
1034	#
1035	# Called automatically when the user clicks on one of the zoom
1036	# controls for this widget. Changes the zoom for the current view.
1037	# ----------------------------------------------------------------------
1038	itcl::body Rappture::VtkSurfaceViewer::Zoom {option} {
1039	switch -- $option {
1040	"in" {
1041	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1042	SendCmd "camera zoom $_view(-zoom)"
1043	}
1044	"out" {
1045	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1046	SendCmd "camera zoom $_view(-zoom)"
1047	}
1048	"reset" {
1049	array set _view {
1050	-qw 0.853553
1051	-qx -0.353553
1052	-qy 0.353553
1053	-qz 0.146447
1054	-xpan 0
1055	-ypan 0
1056	-zoom 1.0
1057	}
1058	if { $_first != "" } {
1059	set location [$_first hints camera]
1060	if { $location != "" } {
1061	array set _view $location
1062	}
1063	}
1064	$_arcball quaternion [ViewToQuaternion]
1065	DoRotate
1066	SendCmd "camera reset"
1067	}
1068	}
1069	}
1070
1071	itcl::body Rappture::VtkSurfaceViewer::PanCamera {} {
1072	set x $_view(-xpan)
1073	set y $_view(-ypan)
1074	SendCmd "camera pan $x $y"
1075	}
1076
1077	# ----------------------------------------------------------------------
1078	# USAGE: Rotate click <x> <y>
1079	# USAGE: Rotate drag <x> <y>
1080	# USAGE: Rotate release <x> <y>
1081	#
1082	# Called automatically when the user clicks/drags/releases in the
1083	# plot area. Moves the plot according to the user's actions.
1084	# ----------------------------------------------------------------------
1085	itcl::body Rappture::VtkSurfaceViewer::Rotate {option x y} {
1086	switch -- $option {
1087	"click" {
1088	$itk_component(view) configure -cursor fleur
1089	set _click(x) $x
1090	set _click(y) $y
1091	}
1092	"drag" {
1093	if {[array size _click] == 0} {
1094	Rotate click $x $y
1095	} else {
1096	set w [winfo width $itk_component(view)]
1097	set h [winfo height $itk_component(view)]
1098	if {$w <= 0 \|\| $h <= 0} {
1099	return
1100	}
1101
1102	if {[catch {
1103	# this fails sometimes for no apparent reason
1104	set dx [expr {double($x-$_click(x))/$w}]
1105	set dy [expr {double($y-$_click(y))/$h}]
1106	}]} {
1107	return
1108	}
1109	if { $dx == 0 && $dy == 0 } {
1110	return
1111	}
1112	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1113	EventuallyRotate $q
1114	set _click(x) $x
1115	set _click(y) $y
1116	}
1117	}
1118	"release" {
1119	Rotate drag $x $y
1120	$itk_component(view) configure -cursor ""
1121	catch {unset _click}
1122	}
1123	default {
1124	error "bad option \"$option\": should be click, drag, release"
1125	}
1126	}
1127	}
1128
1129	itcl::body Rappture::VtkSurfaceViewer::Pick {x y} {
1130	foreach tag [CurrentDatasets -visible] {
1131	SendCmd "dataset getscalar pixel $x $y $tag"
1132	}
1133	}
1134
1135	# ----------------------------------------------------------------------
1136	# USAGE: $this Pan click x y
1137	# $this Pan drag x y
1138	# $this Pan release x y
1139	#
1140	# Called automatically when the user clicks on one of the zoom
1141	# controls for this widget. Changes the zoom for the current view.
1142	# ----------------------------------------------------------------------
1143	itcl::body Rappture::VtkSurfaceViewer::Pan {option x y} {
1144	switch -- $option {
1145	"set" {
1146	set w [winfo width $itk_component(view)]
1147	set h [winfo height $itk_component(view)]
1148	set x [expr $x / double($w)]
1149	set y [expr $y / double($h)]
1150	set _view(-xpan) [expr $_view(-xpan) + $x]
1151	set _view(-ypan) [expr $_view(-ypan) + $y]
1152	PanCamera
1153	return
1154	}
1155	"click" {
1156	set _click(x) $x
1157	set _click(y) $y
1158	$itk_component(view) configure -cursor hand1
1159	}
1160	"drag" {
1161	if { ![info exists _click(x)] } {
1162	set _click(x) $x
1163	}
1164	if { ![info exists _click(y)] } {
1165	set _click(y) $y
1166	}
1167	set w [winfo width $itk_component(view)]
1168	set h [winfo height $itk_component(view)]
1169	set dx [expr ($_click(x) - $x)/double($w)]
1170	set dy [expr ($_click(y) - $y)/double($h)]
1171	set _click(x) $x
1172	set _click(y) $y
1173	set _view(-xpan) [expr $_view(-xpan) - $dx]
1174	set _view(-ypan) [expr $_view(-ypan) - $dy]
1175	PanCamera
1176	}
1177	"release" {
1178	Pan drag $x $y
1179	$itk_component(view) configure -cursor ""
1180	}
1181	default {
1182	error "unknown option \"$option\": should set, click, drag, or release"
1183	}
1184	}
1185	}
1186
1187	# ----------------------------------------------------------------------
1188	# USAGE: InitSettings <what> ?<value>?
1189	#
1190	# Used internally to update rendering settings whenever parameters
1191	# change in the popup settings panel. Sends the new settings off
1192	# to the back end.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::VtkSurfaceViewer::InitSettings { args } {
1195	foreach spec $args {
1196	if { [info exists _settings($_first${spec})] } {
1197	# Reset global setting with dataobj specific setting
1198	set _settings($spec) $_settings($_first${spec})
1199	}
1200	AdjustSetting $spec
1201	}
1202	}
1203
1204	#
1205	# AdjustSetting --
1206	#
1207	# Changes/updates a specific setting in the widget. There are
1208	# usually user-setable option. Commands are sent to the render
1209	# server.
1210	#
1211	itcl::body Rappture::VtkSurfaceViewer::AdjustSetting {what {value ""}} {
1212	if { ![isconnected] } {
1213	return
1214	}
1215	switch -- $what {
1216	"-axesvisible" {
1217	set bool $_settings($what)
1218	SendCmd "axis visible all $bool"
1219	}
1220	"-axislabels" {
1221	set bool $_settings($what)
1222	SendCmd "axis labels all $bool"
1223	}
1224	"-axisminorticks" {
1225	set bool $_settings($what)
1226	SendCmd "axis minticks all $bool"
1227	}
1228	"-axismode" {
1229	set mode [$itk_component(axisMode) value]
1230	set mode [$itk_component(axisMode) translate $mode]
1231	set _settings($what) $mode
1232	SendCmd "axis flymode $mode"
1233	}
1234	"-background" {
1235	set bgcolor [$itk_component(background) value]
1236	array set fgcolors {
1237	"black" "white"
1238	"white" "black"
1239	"grey" "black"
1240	}
1241	configure -plotbackground $bgcolor \
1242	-plotforeground $fgcolors($bgcolor)
1243	$itk_component(view) delete "legend"
1244	DrawLegend
1245	}
1246	"-colormap" {
1247	set _changed($what) 1
1248	StartBufferingCommands
1249	set color [$itk_component(colormap) value]
1250	set _settings($what) $color
1251	if { $color == "none" } {
1252	if { $_settings(-colormapvisible) } {
1253	SendCmd "contour2d colormode constant {}"
1254	SendCmd "polydata colormode constant {}"
1255	set _settings(-colormapvisible) 0
1256	}
1257	} else {
1258	if { !$_settings(-colormapvisible) } {
1259	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1260	SendCmd "polydata colormode $_colorMode $_curFldName"
1261	set _settings(-colormapvisible) 1
1262	}
1263	SetCurrentColormap $color
1264	if {$_settings(-colormapdiscrete)} {
1265	set numColors [expr $_settings(-numcontours) + 1]
1266	SendCmd "colormap res $numColors $color"
1267	}
1268	}
1269	StopBufferingCommands
1270	EventuallyRequestLegend
1271	}
1272	"-colormapdiscrete" {
1273	set bool $_settings($what)
1274	set numColors [expr $_settings(-numcontours) + 1]
1275	StartBufferingCommands
1276	if {$bool} {
1277	SendCmd "colormap res $numColors"
1278	# Discrete colormap requires preinterp on
1279	SendCmd "polydata preinterp on"
1280	} else {
1281	SendCmd "colormap res default"
1282	# FIXME: add setting for preinterp (default on)
1283	SendCmd "polydata preinterp on"
1284	}
1285	StopBufferingCommands
1286	EventuallyRequestLegend
1287	}
1288	"-field" {
1289	set label [$itk_component(field) value]
1290	set fname [$itk_component(field) translate $label]
1291	set _settings($what) $fname
1292	if { [info exists _fields($fname)] } {
1293	foreach { label units components } $_fields($fname) break
1294	if { $components > 1 } {
1295	set _colorMode vmag
1296	} else {
1297	set _colorMode scalar
1298	}
1299	set _curFldName $fname
1300	set _curFldLabel $label
1301	} else {
1302	puts stderr "unknown field \"$fname\""
1303	return
1304	}
1305	SendCmd "dataset scalar $_curFldName"
1306	if { ![info exists _limits($_curFldName)] } {
1307	SendCmd "dataset maprange all"
1308	} else {
1309	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1310	}
1311	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1312	SendCmd "polydata colormode $_colorMode $_curFldName"
1313	UpdateContourList
1314	SendCmd "contour2d contourlist [list $_contourList]"
1315	SendCmd "camera reset"
1316	DrawLegend
1317	}
1318	"-isolinecolor" {
1319	set _changed($what) 1
1320	set color [$itk_component(isolineColor) value]
1321	set _settings($what) $color
1322	SendCmd "contour2d linecolor [Color2RGB $color]"
1323	DrawLegend
1324	}
1325	"-isolinesvisible" {
1326	set _changed($what) 1
1327	set bool $_settings($what)
1328	SendCmd "contour2d visible 0"
1329	if { $bool } {
1330	foreach tag [CurrentDatasets -visible] {
1331	SendCmd "contour2d visible $bool $tag"
1332	}
1333	}
1334	DrawLegend
1335	}
1336	"-legendvisible" {
1337	if { !$_settings($what) } {
1338	$itk_component(view) delete legend
1339	}
1340	DrawLegend
1341	}
1342	"-numcontours" {
1343	set _settings($what) [$itk_component(numcontours) value]
1344	set _currentNumContours $_settings($what)
1345	UpdateContourList
1346	set _changed($what) 1
1347	SendCmd "contour2d contourlist [list $_contourList]"
1348	if {$_settings(-colormapdiscrete)} {
1349	set numColors [expr $_settings($what) + 1]
1350	SendCmd "colormap res $numColors"
1351	EventuallyRequestLegend
1352	} else {
1353	DrawLegend
1354	}
1355	}
1356	"-outline" {
1357	set _changed($what) 1
1358	set bool $_settings($what)
1359	SendCmd "outline visible 0"
1360	if { $bool } {
1361	foreach tag [CurrentDatasets -visible] {
1362	SendCmd "outline visible $bool $tag"
1363	}
1364	}
1365	}
1366	"-surfaceedges" {
1367	set _changed($what) 1
1368	set bool $_settings($what)
1369	SendCmd "polydata edges $bool"
1370	}
1371	"-surfacelighting" {
1372	set _changed($what) 1
1373	set bool $_settings($what)
1374	SendCmd "polydata lighting $bool"
1375	}
1376	"-surfaceopacity" {
1377	set _changed($what) 1
1378	set val $_settings($what)
1379	set sval [expr { 0.01 * double($val) }]
1380	SendCmd "polydata opacity $sval"
1381	}
1382	"-surfacevisible" {
1383	set _changed($what) 1
1384	set bool $_settings($what)
1385	SendCmd "polydata visible 0"
1386	if { $bool } {
1387	foreach tag [CurrentDatasets -visible] {
1388	SendCmd "polydata visible $bool $tag"
1389	}
1390	Rappture::Tooltip::for $itk_component(surface) \
1391	"Hide the surface"
1392	} else {
1393	Rappture::Tooltip::for $itk_component(surface) \
1394	"Show the surface"
1395	}
1396	DrawLegend
1397	}
1398	"-surfacewireframe" {
1399	set _changed($what) 1
1400	set bool $_settings($what)
1401	SendCmd "polydata wireframe $bool"
1402	}
1403	"-xgrid" - "-ygrid" - "-zgrid" {
1404	set axis [string tolower [string range $what 1 1]]
1405	set bool $_settings($what)
1406	SendCmd "axis grid $axis $bool"
1407	}
1408	default {
1409	error "don't know how to fix $what"
1410	}
1411	}
1412	}
1413
1414	#
1415	# RequestLegend --
1416	#
1417	# Request a new legend from the server. The size of the legend
1418	# is determined from the height of the canvas.
1419	#
1420	# This should be called when
1421	# 1. A new current colormap is set.
1422	# 2. Window is resized.
1423	# 3. The limits of the data have changed. (Just need a redraw).
1424	# 4. Number of isolines have changed. (Just need a redraw).
1425	# 5. Legend becomes visible (Just need a redraw).
1426	#
1427	itcl::body Rappture::VtkSurfaceViewer::RequestLegend {} {
1428	set _legendPending 0
1429	if { ![info exists _fields($_curFldName)] } {
1430	return
1431	}
1432	set fname $_curFldName
1433	set font "Arial 8"
1434	set lineht [font metrics $font -linespace]
1435	set w 12
1436	set h [expr {$_height - 2 * ($lineht + 2)}]
1437	if { $h < 1 } {
1438	return
1439	}
1440	if { [string match "component*" $fname] } {
1441	set title ""
1442	} else {
1443	if { [info exists _fields($fname)] } {
1444	foreach { title units } $_fields($fname) break
1445	if { $units != "" } {
1446	set title [format "%s (%s)" $title $units]
1447	}
1448	} else {
1449	set title $fname
1450	}
1451	}
1452	# If there's a title too, subtract one more line
1453	if { $title != "" } {
1454	incr h -$lineht
1455	}
1456	# Set the legend on the first dataset.
1457	if { $_currentColormap != "" } {
1458	set cmap $_currentColormap
1459	if { ![info exists _colormaps($cmap)] } {
1460	BuildColormap $cmap
1461	set _colormaps($cmap) 1
1462	}
1463	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1464	SendCmd "legend2 $cmap $w $h"
1465	}
1466	}
1467
1468	# ----------------------------------------------------------------------
1469	# CONFIGURATION OPTION: -plotbackground
1470	# ----------------------------------------------------------------------
1471	itcl::configbody Rappture::VtkSurfaceViewer::plotbackground {
1472	if { [isconnected] } {
1473	set rgb [Color2RGB $itk_option(-plotbackground)]
1474	SendCmd "screen bgcolor $rgb"
1475	}
1476	}
1477
1478	# ----------------------------------------------------------------------
1479	# CONFIGURATION OPTION: -plotforeground
1480	# ----------------------------------------------------------------------
1481	itcl::configbody Rappture::VtkSurfaceViewer::plotforeground {
1482	if { [isconnected] } {
1483	set rgb [Color2RGB $itk_option(-plotforeground)]
1484	SendCmd "axis color all $rgb"
1485	SendCmd "outline color $rgb"
1486	}
1487	}
1488
1489	itcl::body Rappture::VtkSurfaceViewer::BuildSurfaceTab {} {
1490
1491	set fg [option get $itk_component(hull) font Font]
1492	#set bfg [option get $itk_component(hull) boldFont Font]
1493
1494	set inner [$itk_component(main) insert end \
1495	-title "Surface Settings" \
1496	-icon [Rappture::icon volume-on]]
1497	$inner configure -borderwidth 4
1498
1499	checkbutton $inner.surface \
1500	-text "Surface" \
1501	-variable [itcl::scope _settings(-surfacevisible)] \
1502	-command [itcl::code $this AdjustSetting -surfacevisible] \
1503	-font "Arial 9"
1504
1505	checkbutton $inner.isolines \
1506	-text "Isolines" \
1507	-variable [itcl::scope _settings(-isolinesvisible)] \
1508	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1509	-font "Arial 9"
1510
1511	checkbutton $inner.colormapDiscrete \
1512	-text "Discrete Colormap" \
1513	-variable [itcl::scope _settings(-colormapdiscrete)] \
1514	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1515	-font "Arial 9"
1516
1517	checkbutton $inner.wireframe \
1518	-text "Wireframe" \
1519	-variable [itcl::scope _settings(-surfacewireframe)] \
1520	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1521	-font "Arial 9"
1522
1523	checkbutton $inner.lighting \
1524	-text "Enable Lighting" \
1525	-variable [itcl::scope _settings(-surfacelighting)] \
1526	-command [itcl::code $this AdjustSetting -surfacelighting] \
1527	-font "Arial 9"
1528
1529	checkbutton $inner.edges \
1530	-text "Edges" \
1531	-variable [itcl::scope _settings(-surfaceedges)] \
1532	-command [itcl::code $this AdjustSetting -surfaceedges] \
1533	-font "Arial 9"
1534
1535	checkbutton $inner.outline \
1536	-text "Outline" \
1537	-variable [itcl::scope _settings(-outline)] \
1538	-command [itcl::code $this AdjustSetting -outline] \
1539	-font "Arial 9"
1540
1541	checkbutton $inner.legend \
1542	-text "Legend" \
1543	-variable [itcl::scope _settings(-legendvisible)] \
1544	-command [itcl::code $this AdjustSetting -legendvisible] \
1545	-font "Arial 9"
1546
1547	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1548	itk_component add isolineColor {
1549	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1550	}
1551	$inner.linecolor choices insert end \
1552	"black" "black" \
1553	"blue" "blue" \
1554	"cyan" "cyan" \
1555	"green" "green" \
1556	"grey" "grey" \
1557	"magenta" "magenta" \
1558	"orange" "orange" \
1559	"red" "red" \
1560	"white" "white" \
1561	"none" "none"
1562
1563	$itk_component(isolineColor) value "white"
1564	bind $inner.linecolor <<Value>> \
1565	[itcl::code $this AdjustSetting -isolinecolor]
1566
1567	label $inner.background_l -text "Background" -font "Arial 9"
1568	itk_component add background {
1569	Rappture::Combobox $inner.background -width 10 -editable 0
1570	}
1571	$inner.background choices insert end \
1572	"black" "black" \
1573	"white" "white" \
1574	"grey" "grey"
1575
1576	$itk_component(background) value $_settings(-background)
1577	bind $inner.background <<Value>> \
1578	[itcl::code $this AdjustSetting -background]
1579
1580	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1581	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1582	-variable [itcl::scope _settings(-surfaceopacity)] \
1583	-width 10 \
1584	-showvalue off \
1585	-command [itcl::code $this AdjustSetting -surfaceopacity]
1586
1587	itk_component add field_l {
1588	label $inner.field_l -text "Field" -font "Arial 9"
1589	} {
1590	ignore -font
1591	}
1592	itk_component add field {
1593	Rappture::Combobox $inner.field -width 10 -editable 0
1594	}
1595	bind $inner.field <<Value>> \
1596	[itcl::code $this AdjustSetting -field]
1597
1598	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1599	itk_component add colormap {
1600	Rappture::Combobox $inner.colormap -width 10 -editable 0
1601	}
1602	$inner.colormap choices insert end [GetColormapList]
1603
1604	$itk_component(colormap) value "BCGYR"
1605	bind $inner.colormap <<Value>> \
1606	[itcl::code $this AdjustSetting -colormap]
1607
1608	label $inner.numcontours_l -text "Number of Isolines" -font "Arial 9"
1609	itk_component add numcontours {
1610	Rappture::Spinint $inner.numcontours \
1611	-min 0 -max 50 -font "arial 9"
1612	}
1613	$itk_component(numcontours) value $_settings(-numcontours)
1614	bind $itk_component(numcontours) <<Value>> \
1615	[itcl::code $this AdjustSetting -numcontours]
1616
1617	blt::table $inner \
1618	0,0 $inner.field_l -anchor w -pady 2 \
1619	0,1 $inner.field -anchor w -pady 2 -fill x \
1620	1,0 $inner.colormap_l -anchor w -pady 2 \
1621	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1622	2,0 $inner.linecolor_l -anchor w -pady 2 \
1623	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1624	3,0 $inner.background_l -anchor w -pady 2 \
1625	3,1 $inner.background -anchor w -pady 2 -fill x \
1626	4,0 $inner.numcontours_l -anchor w -pady 2 \
1627	4,1 $inner.numcontours -anchor w -pady 2 \
1628	5,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1629	6,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1630	7,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1631	8,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1632	9,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1633	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1634	11,0 $inner.legend -anchor w -pady 2 \
1635	12,0 $inner.opacity_l -anchor w -pady 2 \
1636	12,1 $inner.opacity -fill x -pady 2 -fill x \
1637
1638	blt::table configure $inner r* c* -resize none
1639	blt::table configure $inner r13 c1 -resize expand
1640	}
1641
1642	itcl::body Rappture::VtkSurfaceViewer::BuildAxisTab {} {
1643
1644	set fg [option get $itk_component(hull) font Font]
1645	#set bfg [option get $itk_component(hull) boldFont Font]
1646
1647	set inner [$itk_component(main) insert end \
1648	-title "Axis Settings" \
1649	-icon [Rappture::icon axis2]]
1650	$inner configure -borderwidth 4
1651
1652	checkbutton $inner.visible \
1653	-text "Axes" \
1654	-variable [itcl::scope _settings(-axesvisible)] \
1655	-command [itcl::code $this AdjustSetting -axesvisible] \
1656	-font "Arial 9"
1657
1658	checkbutton $inner.labels \
1659	-text "Axis Labels" \
1660	-variable [itcl::scope _settings(-axislabels)] \
1661	-command [itcl::code $this AdjustSetting -axislabels] \
1662	-font "Arial 9"
1663	label $inner.grid_l -text "Grid" -font "Arial 9"
1664	checkbutton $inner.xgrid \
1665	-text "X" \
1666	-variable [itcl::scope _settings(-xgrid)] \
1667	-command [itcl::code $this AdjustSetting -xgrid] \
1668	-font "Arial 9"
1669	checkbutton $inner.ygrid \
1670	-text "Y" \
1671	-variable [itcl::scope _settings(-ygrid)] \
1672	-command [itcl::code $this AdjustSetting -ygrid] \
1673	-font "Arial 9"
1674	checkbutton $inner.zgrid \
1675	-text "Z" \
1676	-variable [itcl::scope _settings(-zgrid)] \
1677	-command [itcl::code $this AdjustSetting -zgrid] \
1678	-font "Arial 9"
1679	checkbutton $inner.minorticks \
1680	-text "Minor Ticks" \
1681	-variable [itcl::scope _settings(-axisminorticks)] \
1682	-command [itcl::code $this AdjustSetting -axisminorticks] \
1683	-font "Arial 9"
1684
1685	label $inner.mode_l -text "Mode" -font "Arial 9"
1686
1687	itk_component add axisMode {
1688	Rappture::Combobox $inner.mode -width 10 -editable 0
1689	}
1690	$inner.mode choices insert end \
1691	"static_triad" "static" \
1692	"closest_triad" "closest" \
1693	"furthest_triad" "farthest" \
1694	"outer_edges" "outer"
1695	$itk_component(axisMode) value $_settings(-axismode)
1696	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1697
1698	blt::table $inner \
1699	0,0 $inner.visible -anchor w -cspan 4 \
1700	1,0 $inner.labels -anchor w -cspan 4 \
1701	2,0 $inner.minorticks -anchor w -cspan 4 \
1702	4,0 $inner.grid_l -anchor w \
1703	4,1 $inner.xgrid -anchor w \
1704	4,2 $inner.ygrid -anchor w \
1705	4,3 $inner.zgrid -anchor w \
1706	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1707	5,1 $inner.mode -fill x -cspan 3
1708
1709	blt::table configure $inner r* c* -resize none
1710	blt::table configure $inner r7 c6 -resize expand
1711	blt::table configure $inner r3 -height 0.125i
1712	}
1713
1714	itcl::body Rappture::VtkSurfaceViewer::BuildCameraTab {} {
1715	set inner [$itk_component(main) insert end \
1716	-title "Camera Settings" \
1717	-icon [Rappture::icon camera]]
1718	$inner configure -borderwidth 4
1719
1720	label $inner.view_l -text "view" -font "Arial 9"
1721	set f [frame $inner.view]
1722	foreach side { front back left right top bottom } {
1723	button $f.$side -image [Rappture::icon view$side] \
1724	-command [itcl::code $this SetOrientation $side]
1725	Rappture::Tooltip::for $f.$side "Change the view to $side"
1726	pack $f.$side -side left
1727	}
1728
1729	blt::table $inner \
1730	0,0 $inner.view_l -anchor e -pady 2 \
1731	0,1 $inner.view -anchor w -pady 2
1732	blt::table configure $inner r0 -resize none
1733
1734	set labels { qx qy qz qw xpan ypan zoom }
1735	set row 1
1736	foreach tag $labels {
1737	label $inner.${tag}label -text $tag -font "Arial 9"
1738	entry $inner.${tag} -font "Arial 9" -bg white \
1739	-textvariable [itcl::scope _view(-$tag)]
1740	bind $inner.${tag} <Return> \
1741	[itcl::code $this camera set -${tag}]
1742	bind $inner.${tag} <KP_Enter> \
1743	[itcl::code $this camera set -${tag}]
1744	blt::table $inner \
1745	$row,0 $inner.${tag}label -anchor e -pady 2 \
1746	$row,1 $inner.${tag} -anchor w -pady 2
1747	blt::table configure $inner r$row -resize none
1748	incr row
1749	}
1750	checkbutton $inner.ortho \
1751	-text "Orthographic Projection" \
1752	-variable [itcl::scope _view(-ortho)] \
1753	-command [itcl::code $this camera set -ortho] \
1754	-font "Arial 9"
1755	blt::table $inner \
1756	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1757	blt::table configure $inner r$row -resize none
1758	incr row
1759
1760	blt::table configure $inner c* -resize none
1761	blt::table configure $inner c2 -resize expand
1762	blt::table configure $inner r$row -resize expand
1763	}
1764
1765	#
1766	# camera --
1767	#
1768	itcl::body Rappture::VtkSurfaceViewer::camera {option args} {
1769	switch -- $option {
1770	"show" {
1771	puts [array get _view]
1772	}
1773	"set" {
1774	set what [lindex $args 0]
1775	set x $_view($what)
1776	set code [catch { string is double $x } result]
1777	if { $code != 0 \|\| !$result } {
1778	return
1779	}
1780	switch -- $what {
1781	"-ortho" {
1782	if {$_view($what)} {
1783	SendCmd "camera mode ortho"
1784	} else {
1785	SendCmd "camera mode persp"
1786	}
1787	}
1788	"-xpan" - "-ypan" {
1789	PanCamera
1790	}
1791	"-qx" - "-qy" - "-qz" - "-qw" {
1792	set q [ViewToQuaternion]
1793	$_arcball quaternion $q
1794	EventuallyRotate $q
1795	}
1796	"-zoom" {
1797	SendCmd "camera zoom $_view($what)"
1798	}
1799	}
1800	}
1801	}
1802	}
1803
1804	itcl::body Rappture::VtkSurfaceViewer::GetVtkData { args } {
1805	set bytes ""
1806	foreach dataobj [get] {
1807	foreach cname [$dataobj components] {
1808	set tag $dataobj-$cname
1809	set contents [$dataobj vtkdata $cname]
1810	append bytes "$contents\n"
1811	}
1812	}
1813	return [list .vtk $bytes]
1814	}
1815
1816	itcl::body Rappture::VtkSurfaceViewer::GetImage { args } {
1817	if { [image width $_image(download)] > 0 &&
1818	[image height $_image(download)] > 0 } {
1819	set bytes [$_image(download) data -format "jpeg -quality 100"]
1820	set bytes [Rappture::encoding::decode -as b64 $bytes]
1821	return [list .jpg $bytes]
1822	}
1823	return ""
1824	}
1825
1826	itcl::body Rappture::VtkSurfaceViewer::BuildDownloadPopup { popup command } {
1827	Rappture::Balloon $popup \
1828	-title "[Rappture::filexfer::label downloadWord] as..."
1829	set inner [$popup component inner]
1830	label $inner.summary -text "" -anchor w
1831	radiobutton $inner.vtk_button -text "VTK data file" \
1832	-variable [itcl::scope _downloadPopup(format)] \
1833	-font "Arial 9 " \
1834	-value vtk
1835	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1836	radiobutton $inner.image_button -text "Image File" \
1837	-variable [itcl::scope _downloadPopup(format)] \
1838	-font "Arial 9 " \
1839	-value image
1840	Rappture::Tooltip::for $inner.image_button \
1841	"Save as digital image."
1842
1843	button $inner.ok -text "Save" \
1844	-highlightthickness 0 -pady 2 -padx 3 \
1845	-command $command \
1846	-compound left \
1847	-image [Rappture::icon download]
1848
1849	button $inner.cancel -text "Cancel" \
1850	-highlightthickness 0 -pady 2 -padx 3 \
1851	-command [list $popup deactivate] \
1852	-compound left \
1853	-image [Rappture::icon cancel]
1854
1855	blt::table $inner \
1856	0,0 $inner.summary -cspan 2 \
1857	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1858	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1859	4,1 $inner.cancel -width .9i -fill y \
1860	4,0 $inner.ok -padx 2 -width .9i -fill y
1861	blt::table configure $inner r3 -height 4
1862	blt::table configure $inner r4 -pady 4
1863	raise $inner.image_button
1864	$inner.vtk_button invoke
1865	return $inner
1866	}
1867
1868	itcl::body Rappture::VtkSurfaceViewer::SetObjectStyle { dataobj comp } {
1869	# Parse style string.
1870	set tag $dataobj-$comp
1871	array set style {
1872	-color BCGYR
1873	-edgecolor black
1874	-edges 0
1875	-isolinecolor white
1876	-isolinesvisible 0
1877	-levels 10
1878	-lighting 1
1879	-linewidth 1.0
1880	-opacity 1.0
1881	-outline 0
1882	-surfacevisible 1
1883	-wireframe 0
1884	}
1885	array set style [$dataobj style $comp]
1886
1887	# This is too complicated. We want to set the colormap, number of
1888	# isolines and opacity for the dataset. They can be the default values,
1889	# the style hints loaded with the dataset, or set by user controls. As
1890	# datasets get loaded, they first use the defaults that are overidden
1891	# by the style hints. If the user changes the global controls, then that
1892	# overrides everything else. I don't know what it means when global
1893	# controls are specified as style hints by each dataset. It complicates
1894	# the code to handle aberrant cases.
1895
1896	if { $_changed(-surfaceedges) } {
1897	set style(-edges) $_settings(-surfaceedges)
1898	}
1899	if { $_changed(-surfacelighting) } {
1900	set style(-lighting) $_settings(-surfacelighting)
1901	}
1902	if { $_changed(-surfaceopacity) } {
1903	set style(-opacity) [expr $_settings(-surfaceopacity) * 0.01]
1904	}
1905	if { $_changed(-surfacewireframe) } {
1906	set style(-wireframe) $_settings(-surfacewireframe)
1907	}
1908	if { $_changed(-numcontours) } {
1909	set style(-levels) $_settings(-numcontours)
1910	}
1911	if { $_changed(-colormap) } {
1912	set style(-color) $_settings(-colormap)
1913	}
1914	if { $_currentColormap == "" } {
1915	SetCurrentColormap $style(-color)
1916	$itk_component(colormap) value $style(-color)
1917	}
1918	if { $_currentNumContours != $style(-levels) } {
1919	set _currentNumContours $style(-levels)
1920	set _settings(-numcontours) $_currentNumContours
1921	$itk_component(numcontours) value $_currentNumContours
1922	UpdateContourList
1923	DrawLegend
1924	}
1925	foreach setting {-outline -isolinesvisible -surfacevisible -isolinecolor} {
1926	if {$_changed($setting)} {
1927	# User-modified UI setting overrides style
1928	set style($setting) $_settings($setting)
1929	} else {
1930	# Set UI control to style setting (tool provided or default)
1931	set _settings($setting) $style($setting)
1932	}
1933	}
1934
1935	SendCmd "outline add $tag"
1936	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
1937	SendCmd "outline visible $style(-outline) $tag"
1938
1939	SendCmd "polydata add $tag"
1940	if { $_curFldName != "" } {
1941	SendCmd "polydata colormode $_colorMode $_curFldName $tag"
1942	}
1943	SendCmd "polydata edges $style(-edges) $tag"
1944	set _settings(-surfaceedges) $style(-edges)
1945	#SendCmd "polydata color [Color2RGB $settings(-color)] $tag"
1946	SendCmd "polydata lighting $style(-lighting) $tag"
1947	set _settings(-surfacelighting) $style(-lighting)
1948	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1949	SendCmd "polydata linewidth $style(-linewidth) $tag"
1950	SendCmd "polydata opacity $style(-opacity) $tag"
1951	set _settings(-surfaceopacity) [expr $style(-opacity) * 100.0]
1952	SetCurrentColormap $style(-color)
1953	SendCmd "polydata wireframe $style(-wireframe) $tag"
1954	set _settings(-surfacewireframe) $style(-wireframe)
1955
1956	SendCmd [list contour2d add contourlist $_contourList $tag]
1957	SendCmd "contour2d colormode constant {} $tag"
1958	SendCmd "contour2d color [Color2RGB $style(-isolinecolor)] $tag"
1959	}
1960
1961	itcl::body Rappture::VtkSurfaceViewer::IsValidObject { dataobj } {
1962	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
1963	return 0
1964	}
1965	return 1
1966	}
1967
1968	#
1969	# EnterLegend --
1970	#
1971	itcl::body Rappture::VtkSurfaceViewer::EnterLegend { x y } {
1972	SetLegendTip $x $y
1973	}
1974
1975	#
1976	# MotionLegend --
1977	#
1978	itcl::body Rappture::VtkSurfaceViewer::MotionLegend { x y } {
1979	Rappture::Tooltip::tooltip cancel
1980	set c $itk_component(view)
1981	set cw [winfo width $c]
1982	set ch [winfo height $c]
1983	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
1984	SetLegendTip $x $y
1985	}
1986	}
1987
1988	#
1989	# LeaveLegend --
1990	#
1991	itcl::body Rappture::VtkSurfaceViewer::LeaveLegend { } {
1992	Rappture::Tooltip::tooltip cancel
1993	.rappturetooltip configure -icon ""
1994	}
1995
1996	#
1997	# SetLegendTip --
1998	#
1999	itcl::body Rappture::VtkSurfaceViewer::SetLegendTip { x y } {
2000	set fname $_curFldName
2001	set c $itk_component(view)
2002	set w [winfo width $c]
2003	set h [winfo height $c]
2004
2005	set font "Arial 8"
2006	set lineht [font metrics $font -linespace]
2007
2008	set ih [image height $_image(legend)]
2009	set iy [expr $y - ($lineht + 2)]
2010
2011	if { [string match "component*" $fname] } {
2012	set title ""
2013	} else {
2014	if { [info exists _fields($fname)] } {
2015	foreach { title units } $_fields($fname) break
2016	if { $units != "" } {
2017	set title [format "%s (%s)" $title $units]
2018	}
2019	} else {
2020	set title $fname
2021	}
2022	}
2023	# If there's a legend title, increase the offset by the line height.
2024	if { $title != "" } {
2025	incr iy -$lineht
2026	}
2027	# Make a swatch of the selected color
2028	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2029	return
2030	}
2031	if { ![info exists _image(swatch)] } {
2032	set _image(swatch) [image create photo -width 24 -height 24]
2033	}
2034	set color [eval format "\#%02x%02x%02x" $pixel]
2035	$_image(swatch) put black -to 0 0 23 23
2036	$_image(swatch) put $color -to 1 1 22 22
2037	.rappturetooltip configure -icon $_image(swatch)
2038
2039	# Compute the value of the point
2040	if { [info exists _limits($_curFldName)] } {
2041	foreach { vmin vmax } $_limits($_curFldName) break
2042	set t [expr 1.0 - (double($iy) / double($ih-1))]
2043	set value [expr $t * ($vmax - $vmin) + $vmin]
2044	} else {
2045	set value 0.0
2046	}
2047	set tx [expr $x + 15]
2048	set ty [expr $y - 5]
2049	if { [info exists _isolines($y)] } {
2050	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2051	} else {
2052	Rappture::Tooltip::text $c [format "$title %g" $value]
2053	}
2054	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2055	}
2056
2057	#
2058	# ReceiveLegend --
2059	#
2060	# Invoked automatically whenever the "legend" command comes in from
2061	# the rendering server. Indicates that binary image data with the
2062	# specified <size> will follow.
2063	#
2064	itcl::body Rappture::VtkSurfaceViewer::ReceiveLegend { colormap title min max size } {
2065	DebugTrace "Enter"
2066	set _title $title
2067	regsub {\(mag\)} $title "" _title
2068	if { [IsConnected] } {
2069	set bytes [ReceiveBytes $size]
2070	if { ![info exists _image(legend)] } {
2071	set _image(legend) [image create photo]
2072	}
2073	$_image(legend) configure -data $bytes
2074	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2075	if { [catch {DrawLegend} errs] != 0 } {
2076	global errorInfo
2077	puts stderr "errs=$errs errorInfo=$errorInfo"
2078	}
2079	}
2080	}
2081
2082	#
2083	# DrawLegend --
2084	#
2085	# Draws the legend on the canvas on the right side of the plot area.
2086	#
2087	itcl::body Rappture::VtkSurfaceViewer::DrawLegend {} {
2088	set fname $_curFldName
2089	set c $itk_component(view)
2090	set w [winfo width $c]
2091	set h [winfo height $c]
2092	set font "Arial 8"
2093	set lineht [font metrics $font -linespace]
2094
2095	if { [string match "component*" $fname] } {
2096	set title ""
2097	} else {
2098	if { [info exists _fields($fname)] } {
2099	foreach { title units } $_fields($fname) break
2100	if { $units != "" } {
2101	set title [format "%s (%s)" $title $units]
2102	}
2103	} else {
2104	set title $fname
2105	}
2106	}
2107	set x [expr $w - 2]
2108	if { !$_settings(-legendvisible) } {
2109	$c delete legend
2110	return
2111	}
2112	if { [$c find withtag "legend"] == "" } {
2113	set y 2
2114	# If there's a legend title, create a text item for the title.
2115	$c create text $x $y \
2116	-anchor ne \
2117	-fill $itk_option(-plotforeground) -tags "title legend" \
2118	-font $font
2119	if { $title != "" } {
2120	incr y $lineht
2121	}
2122	$c create text $x $y \
2123	-anchor ne \
2124	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2125	-font $font
2126	incr y $lineht
2127	$c create image $x $y \
2128	-anchor ne \
2129	-image $_image(legend) -tags "colormap legend"
2130	$c create rectangle $x $y 1 1 \
2131	-fill "" -outline "" -tags "sensor legend"
2132	$c create text $x [expr {$h-2}] \
2133	-anchor se \
2134	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2135	-font $font
2136	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2137	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2138	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2139	}
2140	$c delete isoline
2141	set x2 $x
2142	set iw [image width $_image(legend)]
2143	set ih [image height $_image(legend)]
2144	set x1 [expr $x2 - ($iw*12)/10]
2145	set color $_settings(-isolinecolor)
2146	# Draw the isolines on the legend.
2147	array unset _isolines
2148	if { $color != "none" && [info exists _limits($_curFldName)] &&
2149	$_settings(-isolinesvisible) && $_settings(-numcontours) > 0 } {
2150
2151	foreach { vmin vmax } $_limits($_curFldName) break
2152	set range [expr double($vmax - $vmin)]
2153	if { $range <= 0.0 } {
2154	set range 1.0; # Min is greater or equal to max.
2155	}
2156	set tags "isoline legend"
2157	set offset [expr 2 + $lineht]
2158	if { $title != "" } {
2159	incr offset $lineht
2160	}
2161	foreach value $_contourList {
2162	set norm [expr 1.0 - (($value - $vmin) / $range)]
2163	set y1 [expr int(round(($norm * $ih) + $offset))]
2164	for { set off 0 } { $off < 3 } { incr off } {
2165	set _isolines([expr $y1 + $off]) $value
2166	set _isolines([expr $y1 - $off]) $value
2167	}
2168	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2169	}
2170	}
2171
2172	$c bind title <ButtonPress> [itcl::code $this Combo post]
2173	$c bind title <Enter> [itcl::code $this Combo activate]
2174	$c bind title <Leave> [itcl::code $this Combo deactivate]
2175	# Reset the item coordinates according the current size of the plot.
2176	$c itemconfigure title -text $title
2177	if { [info exists _limits($_curFldName)] } {
2178	foreach { vmin vmax } $_limits($_curFldName) break
2179	$c itemconfigure vmin -text [format %g $vmin]
2180	$c itemconfigure vmax -text [format %g $vmax]
2181	}
2182	set y 2
2183	# If there's a legend title, move the title to the correct position
2184	if { $title != "" } {
2185	$c itemconfigure title -text $title
2186	$c coords title $x $y
2187	incr y $lineht
2188	$c raise title
2189	}
2190	$c coords vmax $x $y
2191	incr y $lineht
2192	$c coords colormap $x $y
2193	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2194	$c raise sensor
2195	$c coords vmin $x [expr {$h - 2}]
2196	}
2197
2198	# ----------------------------------------------------------------------
2199	# USAGE: _dropdown post
2200	# USAGE: _dropdown unpost
2201	# USAGE: _dropdown select
2202	#
2203	# Used internally to handle the dropdown list for this combobox. The
2204	# post/unpost options are invoked when the list is posted or unposted
2205	# to manage the relief of the controlling button. The select option
2206	# is invoked whenever there is a selection from the list, to assign
2207	# the value back to the gauge.
2208	# ----------------------------------------------------------------------
2209	itcl::body Rappture::VtkSurfaceViewer::Combo {option} {
2210	set c $itk_component(view)
2211	switch -- $option {
2212	post {
2213	foreach { x1 y1 x2 y2 } [$c bbox title] break
2214	set cw [winfo width $itk_component(view)]
2215	set mw [winfo reqwidth $itk_component(fieldmenu)]
2216	set x1 [expr $cw - $mw]
2217	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2218	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2219	tk_popup $itk_component(fieldmenu) $x $y
2220	}
2221	activate {
2222	$c itemconfigure title -fill red
2223	}
2224	deactivate {
2225	$c itemconfigure title -fill $itk_option(-plotforeground)
2226	}
2227	invoke {
2228	$itk_component(field) value $_curFldLabel
2229	AdjustSetting -field
2230	}
2231	default {
2232	error "bad option \"$option\": should be post, unpost, select"
2233	}
2234	}
2235	}
2236
2237	#
2238	# SetCurrentColormap --
2239	#
2240	itcl::body Rappture::VtkSurfaceViewer::SetCurrentColormap { name } {
2241	# Keep track of the colormaps that we build.
2242	if { ![info exists _colormaps($name)] } {
2243	BuildColormap $name
2244	set _colormaps($name) 1
2245	}
2246	set _currentColormap $name
2247	SendCmd "contour2d colormap $_currentColormap"
2248	SendCmd "polydata colormap $_currentColormap"
2249	}
2250
2251	#
2252	# BuildColormap --
2253	#
2254	# Build the designated colormap on the server.
2255	#
2256	itcl::body Rappture::VtkSurfaceViewer::BuildColormap { name } {
2257	set cmap [ColorsToColormap $name]
2258	if { [llength $cmap] == 0 } {
2259	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2260	}
2261	set amap "0.0 1.0 1.0 1.0"
2262	SendCmd "colormap add $name { $cmap } { $amap }"
2263	}
2264
2265	itcl::body Rappture::VtkSurfaceViewer::SetOrientation { side } {
2266	array set positions {
2267	front "1 0 0 0"
2268	back "0 0 1 0"
2269	left "0.707107 0 -0.707107 0"
2270	right "0.707107 0 0.707107 0"
2271	top "0.707107 -0.707107 0 0"
2272	bottom "0.707107 0.707107 0 0"
2273	}
2274	foreach name { -qw -qx -qy -qz } value $positions($side) {
2275	set _view($name) $value
2276	}
2277	set q [ViewToQuaternion]
2278	$_arcball quaternion $q
2279	SendCmd "camera orient $q"
2280	SendCmd "camera reset"
2281	set _view(-xpan) 0
2282	set _view(-ypan) 0
2283	set _view(-zoom) 1.0
2284	}
2285
2286	itcl::body Rappture::VtkSurfaceViewer::UpdateContourList {} {
2287	if { ![info exists _limits($_curFldName)] } {
2288	return
2289	}
2290	if { $_currentNumContours < 1 } {
2291	set _contourList ""
2292	return
2293	}
2294	foreach { vmin vmax } $_limits($_curFldName) break
2295	set v [blt::vector create \#auto]
2296	$v seq $vmin $vmax [expr $_currentNumContours+2]
2297	$v delete end 0
2298	set _contourList [$v range 0 end]
2299	blt::vector destroy $v
2300	}
2301
2302	itcl::body Rappture::VtkSurfaceViewer::SetCurrentFieldName { dataobj } {
2303	set _first $dataobj
2304	$itk_component(field) choices delete 0 end
2305	$itk_component(fieldmenu) delete 0 end
2306	array unset _fields
2307	set _curFldName ""
2308	foreach cname [$_first components] {
2309	foreach fname [$_first fieldnames $cname] {
2310	if { [info exists _fields($fname)] } {
2311	continue
2312	}
2313	foreach { label units components } \
2314	[$_first fieldinfo $fname] break
2315	$itk_component(field) choices insert end "$fname" "$label"
2316	$itk_component(fieldmenu) add radiobutton -label "$label" \
2317	-value $label -variable [itcl::scope _curFldLabel] \
2318	-selectcolor red \
2319	-activebackground $itk_option(-plotbackground) \
2320	-activeforeground $itk_option(-plotforeground) \
2321	-font "Arial 8" \
2322	-command [itcl::code $this Combo invoke]
2323	set _fields($fname) [list $label $units $components]
2324	if { $_curFldName == "" } {
2325	set _curFldName $fname
2326	set _curFldLabel $label
2327	}
2328	}
2329	}
2330	$itk_component(field) value $_curFldLabel
2331	}

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