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source: trunk/gui/scripts/vtksurfaceviewer.tcl @ 6337

Last change on this file since 6337 was 6337, checked in by ldelgass, 8 years ago
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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 Connect {}
72	private method CurrentDatasets {args}
73	private method Disconnect {}
74	private method DoResize {}
75	private method DoRotate {}
76	private method DrawLegend {}
77	private method EnterLegend { x y }
78	private method EventuallyRequestLegend {}
79	private method EventuallyResize { w h }
80	private method EventuallyRotate { q }
81	private method GetImage { args }
82	private method GetVtkData { args }
83	private method InitSettings { args }
84	private method IsValidObject { dataobj }
85	private method LeaveLegend {}
86	private method LegendTitleAction { option }
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 min max 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 _colorMode "scalar"; # Mode of colormap (vmag or scalar)
142	private variable _fields
143	private variable _curFldName ""
144	private variable _curFldLabel ""
145
146	private common _downloadPopup; # download options from popup
147	private common _hardcopy
148	}
149
150	itk::usual VtkSurfaceViewer {
151	keep -background -foreground -cursor -font
152	keep -plotbackground -plotforeground
153	}
154
155	# ----------------------------------------------------------------------
156	# CONSTRUCTOR
157	# ----------------------------------------------------------------------
158	itcl::body Rappture::VtkSurfaceViewer::constructor {args} {
159	set _serverType "vtkvis"
160	#DebugOn
161
162	# Rebuild event
163	$_dispatcher register !rebuild
164	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
165
166	# Resize event
167	$_dispatcher register !resize
168	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
169
170	# Legend event
171	$_dispatcher register !legend
172	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
173
174	# Rotate event
175	$_dispatcher register !rotate
176	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
177
178	#
179	# Populate parser with commands handle incoming requests
180	#
181	$_parser alias image [itcl::code $this ReceiveImage]
182	$_parser alias legend [itcl::code $this ReceiveLegend]
183	$_parser alias dataset [itcl::code $this ReceiveDataset]
184
185	# Initialize the view to some default parameters.
186	array set _view {
187	-ortho 0
188	-qw 0.853553
189	-qx -0.353553
190	-qy 0.353553
191	-qz 0.146447
192	-xpan 0
193	-ypan 0
194	-zoom 1.0
195	}
196	set _arcball [blt::arcball create 100 100]
197	$_arcball quaternion [ViewToQuaternion]
198
199	array set _settings {
200	-axesvisible 1
201	-axislabels 1
202	-axisminorticks 1
203	-axismode "static"
204	-background black
205	-colormap BCGYR
206	-colormapvisible 1
207	-field "Default"
208	-isolinecolor white
209	-isolinesvisible 0
210	-legendvisible 1
211	-numcontours 10
212	-outline 0
213	-surfaceedges 0
214	-surfacelighting 1
215	-surfaceopacity 100
216	-surfacevisible 1
217	-surfacewireframe 0
218	-xgrid 0
219	-ygrid 0
220	-zgrid 0
221	}
222	array set _changed {
223	-colormap 0
224	-isolinecolor 0
225	-isolinesvisible 0
226	-numcontours 0
227	-outline 0
228	-surfaceedges 0
229	-surfacelighting 0
230	-surfaceopacity 0
231	-surfacevisible 0
232	-surfacewireframe 0
233	}
234
235	itk_component add view {
236	canvas $itk_component(plotarea).view \
237	-highlightthickness 0 -borderwidth 0
238	} {
239	usual
240	ignore -highlightthickness -borderwidth -background
241	}
242
243	itk_component add fieldmenu {
244	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
245	-tearoff 0
246	} {
247	usual
248	ignore -background -foreground -relief -tearoff
249	}
250	set c $itk_component(view)
251	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
252	bind $c <Control-F1> [itcl::code $this ToggleConsole]
253
254	# Fix the scrollregion in case we go off screen
255	$c configure -scrollregion [$c bbox all]
256
257	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
258	set _map(cwidth) -1
259	set _map(cheight) -1
260	set _map(zoom) 1.0
261	set _map(original) ""
262
263	set f [$itk_component(main) component controls]
264	itk_component add reset {
265	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
266	-highlightthickness 0 \
267	-image [Rappture::icon reset-view] \
268	-command [itcl::code $this Zoom reset]
269	} {
270	usual
271	ignore -highlightthickness
272	}
273	pack $itk_component(reset) -side top -padx 2 -pady 2
274	Rappture::Tooltip::for $itk_component(reset) \
275	"Reset the view to the default zoom level"
276
277	itk_component add zoomin {
278	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
279	-highlightthickness 0 \
280	-image [Rappture::icon zoom-in] \
281	-command [itcl::code $this Zoom in]
282	} {
283	usual
284	ignore -highlightthickness
285	}
286	pack $itk_component(zoomin) -side top -padx 2 -pady 2
287	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
288
289	itk_component add zoomout {
290	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
291	-highlightthickness 0 \
292	-image [Rappture::icon zoom-out] \
293	-command [itcl::code $this Zoom out]
294	} {
295	usual
296	ignore -highlightthickness
297	}
298	pack $itk_component(zoomout) -side top -padx 2 -pady 2
299	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
300
301	itk_component add surface {
302	Rappture::PushButton $f.surface \
303	-onimage [Rappture::icon volume-on] \
304	-offimage [Rappture::icon volume-off] \
305	-variable [itcl::scope _settings(-surfacevisible)] \
306	-command [itcl::code $this AdjustSetting -surfacevisible]
307	}
308	$itk_component(surface) select
309	Rappture::Tooltip::for $itk_component(surface) \
310	"Hide the surface"
311	pack $itk_component(surface) -padx 2 -pady 2
312
313	if { [catch {
314	BuildSurfaceTab
315	BuildAxisTab
316	BuildCameraTab
317	} errs] != 0 } {
318	puts stderr errs=$errs
319	}
320
321	# Legend
322	set _image(legend) [image create photo]
323	itk_component add legend {
324	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
325	} {
326	usual
327	ignore -highlightthickness
328	rename -background -plotbackground plotBackground Background
329	}
330
331	# Hack around the Tk panewindow. The problem is that the requested
332	# size of the 3d view isn't set until an image is retrieved from
333	# the server. So the panewindow uses the tiny size.
334	set w 10000
335	pack forget $itk_component(view)
336	blt::table $itk_component(plotarea) \
337	0,0 $itk_component(view) -fill both -reqwidth $w
338	blt::table configure $itk_component(plotarea) c1 -resize none
339
340	# Bindings for rotation via mouse
341	bind $itk_component(view) <ButtonPress-1> \
342	[itcl::code $this Rotate click %x %y]
343	bind $itk_component(view) <B1-Motion> \
344	[itcl::code $this Rotate drag %x %y]
345	bind $itk_component(view) <ButtonRelease-1> \
346	[itcl::code $this Rotate release %x %y]
347
348	# Bindings for panning via mouse
349	bind $itk_component(view) <ButtonPress-2> \
350	[itcl::code $this Pan click %x %y]
351	bind $itk_component(view) <B2-Motion> \
352	[itcl::code $this Pan drag %x %y]
353	bind $itk_component(view) <ButtonRelease-2> \
354	[itcl::code $this Pan release %x %y]
355
356	#bind $itk_component(view) <ButtonRelease-3> \
357	# [itcl::code $this Pick %x %y]
358
359	# Bindings for panning via keyboard
360	bind $itk_component(view) <KeyPress-Left> \
361	[itcl::code $this Pan set -10 0]
362	bind $itk_component(view) <KeyPress-Right> \
363	[itcl::code $this Pan set 10 0]
364	bind $itk_component(view) <KeyPress-Up> \
365	[itcl::code $this Pan set 0 -10]
366	bind $itk_component(view) <KeyPress-Down> \
367	[itcl::code $this Pan set 0 10]
368	bind $itk_component(view) <Shift-KeyPress-Left> \
369	[itcl::code $this Pan set -2 0]
370	bind $itk_component(view) <Shift-KeyPress-Right> \
371	[itcl::code $this Pan set 2 0]
372	bind $itk_component(view) <Shift-KeyPress-Up> \
373	[itcl::code $this Pan set 0 -2]
374	bind $itk_component(view) <Shift-KeyPress-Down> \
375	[itcl::code $this Pan set 0 2]
376
377	# Bindings for zoom via keyboard
378	bind $itk_component(view) <KeyPress-Prior> \
379	[itcl::code $this Zoom out]
380	bind $itk_component(view) <KeyPress-Next> \
381	[itcl::code $this Zoom in]
382
383	bind $itk_component(view) <Enter> "focus $itk_component(view)"
384
385	if {[string equal "x11" [tk windowingsystem]]} {
386	# Bindings for zoom via mouse
387	bind $itk_component(view) <4> [itcl::code $this Zoom out]
388	bind $itk_component(view) <5> [itcl::code $this Zoom in]
389	}
390
391	set _image(download) [image create photo]
392
393	eval itk_initialize $args
394
395	EnableWaitDialog 900
396	Connect
397	}
398
399	# ----------------------------------------------------------------------
400	# DESTRUCTOR
401	# ----------------------------------------------------------------------
402	itcl::body Rappture::VtkSurfaceViewer::destructor {} {
403	Disconnect
404	image delete $_image(plot)
405	image delete $_image(download)
406	catch { blt::arcball destroy $_arcball }
407	}
408
409	itcl::body Rappture::VtkSurfaceViewer::DoResize {} {
410	if { $_width < 2 } {
411	set _width 500
412	}
413	if { $_height < 2 } {
414	set _height 500
415	}
416	set _start [clock clicks -milliseconds]
417	SendCmd "screen size $_width $_height"
418
419	EventuallyRequestLegend
420	set _resizePending 0
421	}
422
423	itcl::body Rappture::VtkSurfaceViewer::DoRotate {} {
424	SendCmd "camera orient [ViewToQuaternion]"
425	set _rotatePending 0
426	}
427
428	itcl::body Rappture::VtkSurfaceViewer::EventuallyRequestLegend {} {
429	if { !$_legendPending } {
430	set _legendPending 1
431	$_dispatcher event -idle !legend
432	}
433	}
434
435	itcl::body Rappture::VtkSurfaceViewer::EventuallyResize { w h } {
436	set _width $w
437	set _height $h
438	$_arcball resize $w $h
439	if { !$_resizePending } {
440	set _resizePending 1
441	$_dispatcher event -after 400 !resize
442	}
443	}
444
445	itcl::body Rappture::VtkSurfaceViewer::EventuallyRotate { q } {
446	QuaternionToView $q
447	if { !$_rotatePending } {
448	set _rotatePending 1
449	$_dispatcher event -after 100 !rotate
450	}
451	}
452
453	# ----------------------------------------------------------------------
454	# USAGE: add <dataobj> ?<settings>?
455	#
456	# Clients use this to add a data object to the plot. The optional
457	# <settings> are used to configure the plot. Allowed settings are
458	# -color, -brightness, -width, -linestyle, and -raise.
459	# ----------------------------------------------------------------------
460	itcl::body Rappture::VtkSurfaceViewer::add {dataobj {settings ""}} {
461	if { ![$dataobj isvalid] } {
462	return; # Object doesn't contain valid data.
463	}
464	array set params {
465	-color auto
466	-width 1
467	-linestyle solid
468	-brightness 0
469	-raise 0
470	-description ""
471	-param ""
472	-type ""
473	}
474	array set params $settings
475
476	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
477	# can't handle -autocolors yet
478	set params(-color) black
479	}
480	set pos [lsearch -exact $_dlist $dataobj]
481	if {$pos < 0} {
482	lappend _dlist $dataobj
483	}
484	set _obj2ovride($dataobj-color) $params(-color)
485	set _obj2ovride($dataobj-width) $params(-width)
486	set _obj2ovride($dataobj-raise) $params(-raise)
487	$_dispatcher event -idle !rebuild
488	}
489
490	# ----------------------------------------------------------------------
491	# USAGE: delete ?<dataobj1> <dataobj2> ...?
492	#
493	# Clients use this to delete a dataobj from the plot. If no dataobjs
494	# are specified, then all dataobjs are deleted. No data objects are
495	# deleted. They are only removed from the display list.
496	# ----------------------------------------------------------------------
497	itcl::body Rappture::VtkSurfaceViewer::delete {args} {
498	if { [llength $args] == 0} {
499	set args $_dlist
500	}
501	# Delete all specified dataobjs
502	set changed 0
503	foreach dataobj $args {
504	set pos [lsearch -exact $_dlist $dataobj]
505	if { $pos < 0 } {
506	continue; # Don't know anything about it.
507	}
508	# Remove it from the dataobj list.
509	set _dlist [lreplace $_dlist $pos $pos]
510	array unset _obj2ovride $dataobj-*
511	array unset _settings $dataobj-*
512	set changed 1
513	}
514	# If anything changed, then rebuild the plot
515	if { $changed } {
516	$_dispatcher event -idle !rebuild
517	}
518	}
519
520	# ----------------------------------------------------------------------
521	# USAGE: get ?-objects?
522	# USAGE: get ?-visible?
523	# USAGE: get ?-image view?
524	#
525	# Clients use this to query the list of objects being plotted, in
526	# order from bottom to top of this result. The optional "-image"
527	# flag can also request the internal images being shown.
528	# ----------------------------------------------------------------------
529	itcl::body Rappture::VtkSurfaceViewer::get {args} {
530	if {[llength $args] == 0} {
531	set args "-objects"
532	}
533
534	set op [lindex $args 0]
535	switch -- $op {
536	"-objects" {
537	# put the dataobj list in order according to -raise options
538	set dlist {}
539	foreach dataobj $_dlist {
540	if { ![IsValidObject $dataobj] } {
541	continue
542	}
543	if {[info exists _obj2ovride($dataobj-raise)] &&
544	$_obj2ovride($dataobj-raise)} {
545	set dlist [linsert $dlist 0 $dataobj]
546	} else {
547	lappend dlist $dataobj
548	}
549	}
550	return $dlist
551	}
552	"-visible" {
553	set dlist {}
554	foreach dataobj $_dlist {
555	if { ![IsValidObject $dataobj] } {
556	continue
557	}
558	if { ![info exists _obj2ovride($dataobj-raise)] } {
559	# No setting indicates that the object isn't visible.
560	continue
561	}
562	# Otherwise use the -raise parameter to put the object to
563	# the front of the list.
564	if { $_obj2ovride($dataobj-raise) } {
565	set dlist [linsert $dlist 0 $dataobj]
566	} else {
567	lappend dlist $dataobj
568	}
569	}
570	return $dlist
571	}
572	"-image" {
573	if {[llength $args] != 2} {
574	error "wrong # args: should be \"get -image view\""
575	}
576	switch -- [lindex $args end] {
577	view {
578	return $_image(plot)
579	}
580	default {
581	error "bad image name \"[lindex $args end]\": should be view"
582	}
583	}
584	}
585	default {
586	error "bad option \"$op\": should be -objects, -visible or -image"
587	}
588	}
589	}
590
591	# ----------------------------------------------------------------------
592	# USAGE: scale ?<data1> <data2> ...?
593	#
594	# Sets the default limits for the overall plot according to the
595	# limits of the data for all of the given <data> objects. This
596	# accounts for all objects--even those not showing on the screen.
597	# Because of this, the limits are appropriate for all objects as
598	# the user scans through data in the ResultSet viewer.
599	# ----------------------------------------------------------------------
600	itcl::body Rappture::VtkSurfaceViewer::scale { args } {
601	foreach dataobj $args {
602	if { ![$dataobj isvalid] } {
603	continue; # Object doesn't contain valid data.
604	}
605	foreach axis { x y z } {
606	set lim [$dataobj limits $axis]
607	if { ![info exists _limits($axis)] } {
608	set _limits($axis) $lim
609	continue
610	}
611	foreach {min max} $lim break
612	foreach {amin amax} $_limits($axis) break
613	if { $amin > $min } {
614	set amin $min
615	}
616	if { $amax < $max } {
617	set amax $max
618	}
619	set _limits($axis) [list $amin $amax]
620	}
621	foreach { fname lim } [$dataobj fieldlimits] {
622	if { ![info exists _limits($fname)] } {
623	set _limits($fname) $lim
624	continue
625	}
626	foreach {min max} $lim break
627	foreach {fmin fmax} $_limits($fname) break
628	if { $fmin > $min } {
629	set fmin $min
630	}
631	if { $fmax < $max } {
632	set fmax $max
633	}
634	set _limits($fname) [list $fmin $fmax]
635	}
636	}
637	}
638
639	# ----------------------------------------------------------------------
640	# USAGE: download coming
641	# USAGE: download controls <downloadCommand>
642	# USAGE: download now
643	#
644	# Clients use this method to create a downloadable representation
645	# of the plot. Returns a list of the form {ext string}, where
646	# "ext" is the file extension (indicating the type of data) and
647	# "string" is the data itself.
648	# ----------------------------------------------------------------------
649	itcl::body Rappture::VtkSurfaceViewer::download {option args} {
650	switch $option {
651	coming {
652	if {[catch {
653	blt::winop snap $itk_component(plotarea) $_image(download)
654	}]} {
655	$_image(download) configure -width 1 -height 1
656	$_image(download) put #000000
657	}
658	}
659	controls {
660	set popup .vtkviewerdownload
661	if { ![winfo exists .vtkviewerdownload] } {
662	set inner [BuildDownloadPopup $popup [lindex $args 0]]
663	} else {
664	set inner [$popup component inner]
665	}
666	set _downloadPopup(image_controls) $inner.image_frame
667	set num [llength [get]]
668	set num [expr {($num == 1) ? "1 result" : "$num results"}]
669	set word [Rappture::filexfer::label downloadWord]
670	$inner.summary configure -text "$word $num in the following format:"
671	update idletasks ;# Fix initial sizes
672	return $popup
673	}
674	now {
675	set popup .vtkviewerdownload
676	if {[winfo exists .vtkviewerdownload]} {
677	$popup deactivate
678	}
679	switch -- $_downloadPopup(format) {
680	"image" {
681	return [$this GetImage [lindex $args 0]]
682	}
683	"vtk" {
684	return [$this GetVtkData [lindex $args 0]]
685	}
686	}
687	return ""
688	}
689	default {
690	error "bad option \"$option\": should be coming, controls, now"
691	}
692	}
693	}
694
695	# ----------------------------------------------------------------------
696	# USAGE: Connect ?<host:port>,<host:port>...?
697	#
698	# Clients use this method to establish a connection to a new
699	# server, or to reestablish a connection to the previous server.
700	# Any existing connection is automatically closed.
701	# ----------------------------------------------------------------------
702	itcl::body Rappture::VtkSurfaceViewer::Connect {} {
703	set _hosts [GetServerList "vtkvis"]
704	if { "" == $_hosts } {
705	return 0
706	}
707	set _reset 1
708	set result [VisViewer::Connect $_hosts]
709	if { $result } {
710	if { $_reportClientInfo } {
711	# Tell the server the viewer, hub, user and session.
712	# Do this immediately on connect before buffering any commands
713	global env
714
715	set info {}
716	set user "???"
717	if { [info exists env(USER)] } {
718	set user $env(USER)
719	}
720	set session "???"
721	if { [info exists env(SESSION)] } {
722	set session $env(SESSION)
723	}
724	lappend info "version" "$Rappture::version"
725	lappend info "build" "$Rappture::build"
726	lappend info "svnurl" "$Rappture::svnurl"
727	lappend info "installdir" "$Rappture::installdir"
728	lappend info "hub" [exec hostname]
729	lappend info "client" "vtksurfaceviewer"
730	lappend info "user" $user
731	lappend info "session" $session
732	SendCmd "clientinfo [list $info]"
733	}
734
735	set w [winfo width $itk_component(view)]
736	set h [winfo height $itk_component(view)]
737	EventuallyResize $w $h
738	}
739	return $result
740	}
741
742	#
743	# isconnected --
744	#
745	# Indicates if we are currently connected to the visualization server.
746	#
747	itcl::body Rappture::VtkSurfaceViewer::isconnected {} {
748	return [VisViewer::IsConnected]
749	}
750
751	#
752	# disconnect --
753	#
754	itcl::body Rappture::VtkSurfaceViewer::disconnect {} {
755	Disconnect
756	set _reset 1
757	}
758
759	#
760	# Disconnect --
761	#
762	# Clients use this method to disconnect from the current rendering server.
763	#
764	itcl::body Rappture::VtkSurfaceViewer::Disconnect {} {
765	VisViewer::Disconnect
766
767	$_dispatcher cancel !rebuild
768	$_dispatcher cancel !resize
769	$_dispatcher cancel !rotate
770	$_dispatcher cancel !legend
771	# disconnected -- no more data sitting on server
772	array unset _datasets
773	array unset _colormaps
774	}
775
776	# ----------------------------------------------------------------------
777	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
778	#
779	# Invoked automatically whenever the "image" command comes in from
780	# the rendering server. Indicates that binary image data with the
781	# specified <size> will follow.
782	# ----------------------------------------------------------------------
783	itcl::body Rappture::VtkSurfaceViewer::ReceiveImage { args } {
784	array set info {
785	-token "???"
786	-bytes 0
787	-type image
788	}
789	array set info $args
790	set bytes [ReceiveBytes $info(-bytes)]
791	if { $info(-type) == "image" } {
792	if 0 {
793	set f [open "last.ppm" "w"]
794	fconfigure $f -encoding binary
795	puts -nonewline $f $bytes
796	close $f
797	}
798	$_image(plot) configure -data $bytes
799	#set time [clock seconds]
800	#set date [clock format $time]
801	#set w [image width $_image(plot)]
802	#set h [image height $_image(plot)]
803	#puts stderr "$date: received image ${w}x${h} image"
804	if { $_start > 0 } {
805	set finish [clock clicks -milliseconds]
806	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
807	set _start 0
808	}
809	} elseif { $info(type) == "print" } {
810	set tag $this-print-$info(-token)
811	set _hardcopy($tag) $bytes
812	}
813	}
814
815	#
816	# ReceiveDataset --
817	#
818	itcl::body Rappture::VtkSurfaceViewer::ReceiveDataset { args } {
819	if { ![isconnected] } {
820	return
821	}
822	set option [lindex $args 0]
823	switch -- $option {
824	"scalar" {
825	set option [lindex $args 1]
826	switch -- $option {
827	"world" {
828	foreach { x y z value tag } [lrange $args 2 end] break
829	}
830	"pixel" {
831	foreach { x y value tag } [lrange $args 2 end] break
832	}
833	}
834	}
835	"vector" {
836	set option [lindex $args 1]
837	switch -- $option {
838	"world" {
839	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
840	}
841	"pixel" {
842	foreach { x y vx vy vz tag } [lrange $args 2 end] break
843	}
844	}
845	}
846	"names" {
847	foreach { name } [lindex $args 1] {
848	#puts stderr "Dataset: $name"
849	}
850	}
851	default {
852	error "unknown dataset option \"$option\" from server"
853	}
854	}
855	}
856
857	# ----------------------------------------------------------------------
858	# USAGE: Rebuild
859	#
860	# Called automatically whenever something changes that affects the
861	# data in the widget. Clears any existing data and rebuilds the
862	# widget to display new data.
863	# ----------------------------------------------------------------------
864	itcl::body Rappture::VtkSurfaceViewer::Rebuild {} {
865	set w [winfo width $itk_component(view)]
866	set h [winfo height $itk_component(view)]
867	if { $w < 2 \|\| $h < 2 } {
868	update
869	$_dispatcher event -idle !rebuild
870	return
871	}
872
873	# Turn on buffering of commands to the server. We don't want to
874	# be preempted by a server disconnect/reconnect (which automatically
875	# generates a new call to Rebuild).
876	StartBufferingCommands
877
878	if { $_reset } {
879	set _width $w
880	set _height $h
881	$_arcball resize $w $h
882	DoResize
883	# Reset the camera and other view parameters
884	$_arcball quaternion [ViewToQuaternion]
885	if {$_view(-ortho)} {
886	SendCmd "camera mode ortho"
887	} else {
888	SendCmd "camera mode persp"
889	}
890	DoRotate
891	PanCamera
892	set _first ""
893	InitSettings -background \
894	-xgrid -ygrid -zgrid -axismode \
895	-axesvisible -axislabels -axisminorticks
896	#SendCmd "axis lformat all %g"
897	StopBufferingCommands
898	SendCmd "imgflush"
899	StartBufferingCommands
900	}
901	set _first ""
902	SendCmd "dataset visible 0"
903	eval scale $_dlist
904	foreach dataobj [get -objects] {
905	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
906	set _first $dataobj
907	SetCurrentFieldName $dataobj
908	}
909	foreach comp [$dataobj components] {
910	set tag $dataobj-$comp
911	if { ![info exists _datasets($tag)] } {
912	set bytes [$dataobj vtkdata $comp]
913	if 0 {
914	set f [open "/tmp/surface.vtk" "w"]
915	fconfigure $f -translation binary -encoding binary
916	puts -nonewline $f $bytes
917	close $f
918	}
919	set length [string length $bytes]
920	if { $_reportClientInfo } {
921	set info {}
922	lappend info "tool_id" [$dataobj hints toolid]
923	lappend info "tool_name" [$dataobj hints toolname]
924	lappend info "tool_title" [$dataobj hints tooltitle]
925	lappend info "tool_command" [$dataobj hints toolcommand]
926	lappend info "tool_revision" [$dataobj hints toolrevision]
927	lappend info "dataset_label" [$dataobj hints label]
928	lappend info "dataset_size" $length
929	lappend info "dataset_tag" $tag
930	SendCmd "clientinfo [list $info]"
931	}
932	SendCmd "dataset add $tag data follows $length"
933	SendData $bytes
934	set _datasets($tag) 1
935	SetObjectStyle $dataobj $comp
936	}
937	if { [info exists _obj2ovride($dataobj-raise)] } {
938	SendCmd "polydata visible 1 $tag"
939	}
940	}
941	}
942
943	InitSettings -isolinesvisible -surfacevisible -outline
944	if { $_reset } {
945	# These are settings that rely on a dataset being loaded.
946	InitSettings \
947	-surfacelighting \
948	-field \
949	-surfaceedges -surfacelighting -surfaceopacity \
950	-surfacewireframe \
951	-numcontours
952
953	Zoom reset
954	foreach axis { x y z } {
955	set label ""
956	if { $_first != "" } {
957	set label [$_first hints ${axis}label]
958	}
959	if { $label == "" } {
960	set label [string toupper $axis]
961	}
962	# There may be a space in the axis label.
963	SendCmd [list axis name $axis $label]
964	}
965	if { [array size _fields] < 2 } {
966	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
967	}
968	set _reset 0
969	}
970	# Redraw the legend even if we're using the same colormap. The position
971	# of the isolines may have changed because the range of data changed.
972	DrawLegend
973
974	# Actually write the commands to the server socket. If it fails, we don't
975	# care. We're finished here.
976	blt::busy hold $itk_component(hull)
977	StopBufferingCommands; # Turn off buffering and send commands.
978	blt::busy release $itk_component(hull)
979	}
980
981	# ----------------------------------------------------------------------
982	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
983	#
984	# Returns a list of server IDs for the current datasets being displayed. This
985	# is normally a single ID, but it might be a list of IDs if the current data
986	# object has multiple components.
987	# ----------------------------------------------------------------------
988	itcl::body Rappture::VtkSurfaceViewer::CurrentDatasets {args} {
989	set flag [lindex $args 0]
990	switch -- $flag {
991	"-all" {
992	if { [llength $args] > 1 } {
993	error "CurrentDatasets: can't specify dataobj after \"-all\""
994	}
995	set dlist [get -objects]
996	}
997	"-visible" {
998	if { [llength $args] > 1 } {
999	set dlist {}
1000	set args [lrange $args 1 end]
1001	foreach dataobj $args {
1002	if { [info exists _obj2ovride($dataobj-raise)] } {
1003	lappend dlist $dataobj
1004	}
1005	}
1006	} else {
1007	set dlist [get -visible]
1008	}
1009	}
1010	default {
1011	set dlist $args
1012	}
1013	}
1014	set rlist ""
1015	foreach dataobj $dlist {
1016	foreach comp [$dataobj components] {
1017	set tag $dataobj-$comp
1018	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1019	lappend rlist $tag
1020	}
1021	}
1022	}
1023	return $rlist
1024	}
1025
1026	# ----------------------------------------------------------------------
1027	# USAGE: Zoom in
1028	# USAGE: Zoom out
1029	# USAGE: Zoom reset
1030	#
1031	# Called automatically when the user clicks on one of the zoom
1032	# controls for this widget. Changes the zoom for the current view.
1033	# ----------------------------------------------------------------------
1034	itcl::body Rappture::VtkSurfaceViewer::Zoom {option} {
1035	switch -- $option {
1036	"in" {
1037	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1038	SendCmd "camera zoom $_view(-zoom)"
1039	}
1040	"out" {
1041	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1042	SendCmd "camera zoom $_view(-zoom)"
1043	}
1044	"reset" {
1045	array set _view {
1046	-qw 0.853553
1047	-qx -0.353553
1048	-qy 0.353553
1049	-qz 0.146447
1050	-xpan 0
1051	-ypan 0
1052	-zoom 1.0
1053	}
1054	if { $_first != "" } {
1055	set location [$_first hints camera]
1056	if { $location != "" } {
1057	array set _view $location
1058	}
1059	}
1060	$_arcball quaternion [ViewToQuaternion]
1061	DoRotate
1062	SendCmd "camera reset"
1063	}
1064	}
1065	}
1066
1067	itcl::body Rappture::VtkSurfaceViewer::PanCamera {} {
1068	set x $_view(-xpan)
1069	set y $_view(-ypan)
1070	SendCmd "camera pan $x $y"
1071	}
1072
1073	# ----------------------------------------------------------------------
1074	# USAGE: Rotate click <x> <y>
1075	# USAGE: Rotate drag <x> <y>
1076	# USAGE: Rotate release <x> <y>
1077	#
1078	# Called automatically when the user clicks/drags/releases in the
1079	# plot area. Moves the plot according to the user's actions.
1080	# ----------------------------------------------------------------------
1081	itcl::body Rappture::VtkSurfaceViewer::Rotate {option x y} {
1082	switch -- $option {
1083	"click" {
1084	$itk_component(view) configure -cursor fleur
1085	set _click(x) $x
1086	set _click(y) $y
1087	}
1088	"drag" {
1089	if {[array size _click] == 0} {
1090	Rotate click $x $y
1091	} else {
1092	set w [winfo width $itk_component(view)]
1093	set h [winfo height $itk_component(view)]
1094	if {$w <= 0 \|\| $h <= 0} {
1095	return
1096	}
1097
1098	if {[catch {
1099	# this fails sometimes for no apparent reason
1100	set dx [expr {double($x-$_click(x))/$w}]
1101	set dy [expr {double($y-$_click(y))/$h}]
1102	}]} {
1103	return
1104	}
1105	if { $dx == 0 && $dy == 0 } {
1106	return
1107	}
1108	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1109	EventuallyRotate $q
1110	set _click(x) $x
1111	set _click(y) $y
1112	}
1113	}
1114	"release" {
1115	Rotate drag $x $y
1116	$itk_component(view) configure -cursor ""
1117	catch {unset _click}
1118	}
1119	default {
1120	error "bad option \"$option\": should be click, drag, release"
1121	}
1122	}
1123	}
1124
1125	itcl::body Rappture::VtkSurfaceViewer::Pick {x y} {
1126	foreach tag [CurrentDatasets -visible] {
1127	SendCmd "dataset getscalar pixel $x $y $tag"
1128	}
1129	}
1130
1131	# ----------------------------------------------------------------------
1132	# USAGE: $this Pan click x y
1133	# $this Pan drag x y
1134	# $this Pan release x y
1135	#
1136	# Called automatically when the user clicks on one of the zoom
1137	# controls for this widget. Changes the zoom for the current view.
1138	# ----------------------------------------------------------------------
1139	itcl::body Rappture::VtkSurfaceViewer::Pan {option x y} {
1140	switch -- $option {
1141	"set" {
1142	set w [winfo width $itk_component(view)]
1143	set h [winfo height $itk_component(view)]
1144	set x [expr $x / double($w)]
1145	set y [expr $y / double($h)]
1146	set _view(-xpan) [expr $_view(-xpan) + $x]
1147	set _view(-ypan) [expr $_view(-ypan) + $y]
1148	PanCamera
1149	return
1150	}
1151	"click" {
1152	set _click(x) $x
1153	set _click(y) $y
1154	$itk_component(view) configure -cursor hand1
1155	}
1156	"drag" {
1157	if { ![info exists _click(x)] } {
1158	set _click(x) $x
1159	}
1160	if { ![info exists _click(y)] } {
1161	set _click(y) $y
1162	}
1163	set w [winfo width $itk_component(view)]
1164	set h [winfo height $itk_component(view)]
1165	set dx [expr ($_click(x) - $x)/double($w)]
1166	set dy [expr ($_click(y) - $y)/double($h)]
1167	set _click(x) $x
1168	set _click(y) $y
1169	set _view(-xpan) [expr $_view(-xpan) - $dx]
1170	set _view(-ypan) [expr $_view(-ypan) - $dy]
1171	PanCamera
1172	}
1173	"release" {
1174	Pan drag $x $y
1175	$itk_component(view) configure -cursor ""
1176	}
1177	default {
1178	error "unknown option \"$option\": should set, click, drag, or release"
1179	}
1180	}
1181	}
1182
1183	# ----------------------------------------------------------------------
1184	# USAGE: InitSettings <what> ?<value>?
1185	#
1186	# Used internally to update rendering settings whenever parameters
1187	# change in the popup settings panel. Sends the new settings off
1188	# to the back end.
1189	# ----------------------------------------------------------------------
1190	itcl::body Rappture::VtkSurfaceViewer::InitSettings { args } {
1191	foreach spec $args {
1192	if { [info exists _settings($_first${spec})] } {
1193	# Reset global setting with dataobj specific setting
1194	set _settings($spec) $_settings($_first${spec})
1195	}
1196	AdjustSetting $spec
1197	}
1198	}
1199
1200	#
1201	# AdjustSetting --
1202	#
1203	# Changes/updates a specific setting in the widget. There are
1204	# usually user-setable option. Commands are sent to the render
1205	# server.
1206	#
1207	itcl::body Rappture::VtkSurfaceViewer::AdjustSetting {what {value ""}} {
1208	if { ![isconnected] } {
1209	return
1210	}
1211	switch -- $what {
1212	"-axesvisible" {
1213	set bool $_settings($what)
1214	SendCmd "axis visible all $bool"
1215	}
1216	"-axislabels" {
1217	set bool $_settings($what)
1218	SendCmd "axis labels all $bool"
1219	}
1220	"-axisminorticks" {
1221	set bool $_settings($what)
1222	SendCmd "axis minticks all $bool"
1223	}
1224	"-axismode" {
1225	set mode [$itk_component(axisMode) value]
1226	set mode [$itk_component(axisMode) translate $mode]
1227	set _settings($what) $mode
1228	SendCmd "axis flymode $mode"
1229	}
1230	"-background" {
1231	set bgcolor [$itk_component(background) value]
1232	array set fgcolors {
1233	"black" "white"
1234	"white" "black"
1235	"grey" "black"
1236	}
1237	configure -plotbackground $bgcolor \
1238	-plotforeground $fgcolors($bgcolor)
1239	$itk_component(view) delete "legend"
1240	DrawLegend
1241	}
1242	"-colormap" {
1243	set _changed($what) 1
1244	StartBufferingCommands
1245	set color [$itk_component(colormap) value]
1246	set _settings($what) $color
1247	if { $color == "none" } {
1248	if { $_settings(-colormapvisible) } {
1249	SendCmd "contour2d colormode constant {}"
1250	SendCmd "polydata colormode constant {}"
1251	set _settings(-colormapvisible) 0
1252	}
1253	} else {
1254	if { !$_settings(-colormapvisible) } {
1255	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1256	SendCmd "polydata colormode $_colorMode $_curFldName"
1257	set _settings(-colormapvisible) 1
1258	}
1259	SetCurrentColormap $color
1260	if {$_settings(-colormapdiscrete)} {
1261	set numColors [expr $_settings(-numcontours) + 1]
1262	SendCmd "colormap res $numColors $color"
1263	}
1264	}
1265	StopBufferingCommands
1266	EventuallyRequestLegend
1267	}
1268	"-colormapdiscrete" {
1269	set bool $_settings($what)
1270	set numColors [expr $_settings(-numcontours) + 1]
1271	StartBufferingCommands
1272	if {$bool} {
1273	SendCmd "colormap res $numColors"
1274	# Discrete colormap requires preinterp on
1275	SendCmd "polydata preinterp on"
1276	} else {
1277	SendCmd "colormap res default"
1278	# FIXME: add setting for preinterp (default on)
1279	SendCmd "polydata preinterp on"
1280	}
1281	StopBufferingCommands
1282	EventuallyRequestLegend
1283	}
1284	"-field" {
1285	set label [$itk_component(field) value]
1286	set fname [$itk_component(field) translate $label]
1287	set _settings($what) $fname
1288	if { [info exists _fields($fname)] } {
1289	foreach { label units components } $_fields($fname) break
1290	if { $components > 1 } {
1291	set _colorMode vmag
1292	} else {
1293	set _colorMode scalar
1294	}
1295	set _curFldName $fname
1296	set _curFldLabel $label
1297	} else {
1298	puts stderr "unknown field \"$fname\""
1299	return
1300	}
1301	SendCmd "dataset scalar $_curFldName"
1302	if { ![info exists _limits($_curFldName)] } {
1303	SendCmd "dataset maprange all"
1304	} else {
1305	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1306	}
1307	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1308	SendCmd "polydata colormode $_colorMode $_curFldName"
1309	UpdateContourList
1310	SendCmd "contour2d contourlist [list $_contourList]"
1311	SendCmd "camera reset"
1312	DrawLegend
1313	}
1314	"-isolinecolor" {
1315	set _changed($what) 1
1316	set color [$itk_component(isolinecolor) value]
1317	set _settings($what) $color
1318	SendCmd "contour2d linecolor [Color2RGB $color]"
1319	DrawLegend
1320	}
1321	"-isolinesvisible" {
1322	set _changed($what) 1
1323	set bool $_settings($what)
1324	SendCmd "contour2d visible 0"
1325	if { $bool } {
1326	foreach tag [CurrentDatasets -visible] {
1327	SendCmd "contour2d visible $bool $tag"
1328	}
1329	}
1330	DrawLegend
1331	}
1332	"-legendvisible" {
1333	if { !$_settings($what) } {
1334	$itk_component(view) delete legend
1335	}
1336	DrawLegend
1337	}
1338	"-numcontours" {
1339	set _settings($what) [$itk_component(numcontours) value]
1340	set _currentNumContours $_settings($what)
1341	UpdateContourList
1342	set _changed($what) 1
1343	SendCmd "contour2d contourlist [list $_contourList]"
1344	if {$_settings(-colormapdiscrete)} {
1345	set numColors [expr $_settings($what) + 1]
1346	SendCmd "colormap res $numColors"
1347	EventuallyRequestLegend
1348	} else {
1349	DrawLegend
1350	}
1351	}
1352	"-outline" {
1353	set _changed($what) 1
1354	set bool $_settings($what)
1355	SendCmd "outline visible 0"
1356	if { $bool } {
1357	foreach tag [CurrentDatasets -visible] {
1358	SendCmd "outline visible $bool $tag"
1359	}
1360	}
1361	}
1362	"-surfaceedges" {
1363	set _changed($what) 1
1364	set bool $_settings($what)
1365	SendCmd "polydata edges $bool"
1366	}
1367	"-surfacelighting" {
1368	set _changed($what) 1
1369	set bool $_settings($what)
1370	SendCmd "polydata lighting $bool"
1371	}
1372	"-surfaceopacity" {
1373	set _changed($what) 1
1374	set val $_settings($what)
1375	set sval [expr { 0.01 * double($val) }]
1376	SendCmd "polydata opacity $sval"
1377	}
1378	"-surfacevisible" {
1379	set _changed($what) 1
1380	set bool $_settings($what)
1381	SendCmd "polydata visible 0"
1382	if { $bool } {
1383	foreach tag [CurrentDatasets -visible] {
1384	SendCmd "polydata visible $bool $tag"
1385	}
1386	Rappture::Tooltip::for $itk_component(surface) \
1387	"Hide the surface"
1388	} else {
1389	Rappture::Tooltip::for $itk_component(surface) \
1390	"Show the surface"
1391	}
1392	DrawLegend
1393	}
1394	"-surfacewireframe" {
1395	set _changed($what) 1
1396	set bool $_settings($what)
1397	SendCmd "polydata wireframe $bool"
1398	}
1399	"-xgrid" - "-ygrid" - "-zgrid" {
1400	set axis [string tolower [string range $what 1 1]]
1401	set bool $_settings($what)
1402	SendCmd "axis grid $axis $bool"
1403	}
1404	default {
1405	error "don't know how to fix $what"
1406	}
1407	}
1408	}
1409
1410	#
1411	# RequestLegend --
1412	#
1413	# Request a new legend from the server. The size of the legend
1414	# is determined from the height of the canvas.
1415	#
1416	# This should be called when
1417	# 1. A new current colormap is set.
1418	# 2. Window is resized.
1419	# 3. The limits of the data have changed. (Just need a redraw).
1420	# 4. Number of isolines have changed. (Just need a redraw).
1421	# 5. Legend becomes visible (Just need a redraw).
1422	#
1423	itcl::body Rappture::VtkSurfaceViewer::RequestLegend {} {
1424	set _legendPending 0
1425	if { ![info exists _fields($_curFldName)] } {
1426	return
1427	}
1428	set fname $_curFldName
1429	set font "Arial 8"
1430	set lineht [font metrics $font -linespace]
1431	set w 12
1432	set h [expr {$_height - 2 * ($lineht + 2)}]
1433	if { $h < 1 } {
1434	return
1435	}
1436	if { [string match "component*" $fname] } {
1437	set title ""
1438	} else {
1439	if { [info exists _fields($fname)] } {
1440	foreach { title units } $_fields($fname) break
1441	if { $units != "" } {
1442	set title [format "%s (%s)" $title $units]
1443	}
1444	} else {
1445	set title $fname
1446	}
1447	}
1448	# If there's a title too, subtract one more line
1449	if { $title != "" } {
1450	incr h -$lineht
1451	}
1452	# Set the legend on the first dataset.
1453	if { $_currentColormap != "" } {
1454	set cmap $_currentColormap
1455	if { ![info exists _colormaps($cmap)] } {
1456	BuildColormap $cmap
1457	set _colormaps($cmap) 1
1458	}
1459	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1460	SendCmd "legend2 $cmap $w $h"
1461	}
1462	}
1463
1464	# ----------------------------------------------------------------------
1465	# CONFIGURATION OPTION: -plotbackground
1466	# ----------------------------------------------------------------------
1467	itcl::configbody Rappture::VtkSurfaceViewer::plotbackground {
1468	if { [isconnected] } {
1469	set rgb [Color2RGB $itk_option(-plotbackground)]
1470	SendCmd "screen bgcolor $rgb"
1471	}
1472	}
1473
1474	# ----------------------------------------------------------------------
1475	# CONFIGURATION OPTION: -plotforeground
1476	# ----------------------------------------------------------------------
1477	itcl::configbody Rappture::VtkSurfaceViewer::plotforeground {
1478	if { [isconnected] } {
1479	set rgb [Color2RGB $itk_option(-plotforeground)]
1480	SendCmd "axis color all $rgb"
1481	SendCmd "outline color $rgb"
1482	}
1483	}
1484
1485	itcl::body Rappture::VtkSurfaceViewer::BuildSurfaceTab {} {
1486
1487	set fg [option get $itk_component(hull) font Font]
1488	#set bfg [option get $itk_component(hull) boldFont Font]
1489
1490	set inner [$itk_component(main) insert end \
1491	-title "Surface Settings" \
1492	-icon [Rappture::icon volume-on]]
1493	$inner configure -borderwidth 4
1494
1495	checkbutton $inner.surface \
1496	-text "Surface" \
1497	-variable [itcl::scope _settings(-surfacevisible)] \
1498	-command [itcl::code $this AdjustSetting -surfacevisible] \
1499	-font "Arial 9"
1500
1501	checkbutton $inner.isolines \
1502	-text "Isolines" \
1503	-variable [itcl::scope _settings(-isolinesvisible)] \
1504	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1505	-font "Arial 9"
1506
1507	checkbutton $inner.colormapDiscrete \
1508	-text "Discrete Colormap" \
1509	-variable [itcl::scope _settings(-colormapdiscrete)] \
1510	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1511	-font "Arial 9"
1512
1513	checkbutton $inner.wireframe \
1514	-text "Wireframe" \
1515	-variable [itcl::scope _settings(-surfacewireframe)] \
1516	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1517	-font "Arial 9"
1518
1519	checkbutton $inner.lighting \
1520	-text "Enable Lighting" \
1521	-variable [itcl::scope _settings(-surfacelighting)] \
1522	-command [itcl::code $this AdjustSetting -surfacelighting] \
1523	-font "Arial 9"
1524
1525	checkbutton $inner.edges \
1526	-text "Edges" \
1527	-variable [itcl::scope _settings(-surfaceedges)] \
1528	-command [itcl::code $this AdjustSetting -surfaceedges] \
1529	-font "Arial 9"
1530
1531	checkbutton $inner.outline \
1532	-text "Outline" \
1533	-variable [itcl::scope _settings(-outline)] \
1534	-command [itcl::code $this AdjustSetting -outline] \
1535	-font "Arial 9"
1536
1537	checkbutton $inner.legend \
1538	-text "Legend" \
1539	-variable [itcl::scope _settings(-legendvisible)] \
1540	-command [itcl::code $this AdjustSetting -legendvisible] \
1541	-font "Arial 9"
1542
1543	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1544	itk_component add isolinecolor {
1545	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1546	}
1547	$inner.linecolor choices insert end \
1548	"black" "black" \
1549	"blue" "blue" \
1550	"cyan" "cyan" \
1551	"green" "green" \
1552	"grey" "grey" \
1553	"magenta" "magenta" \
1554	"orange" "orange" \
1555	"red" "red" \
1556	"white" "white" \
1557	"none" "none"
1558
1559	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1560	bind $inner.linecolor <<Value>> \
1561	[itcl::code $this AdjustSetting -isolinecolor]
1562
1563	label $inner.background_l -text "Background" -font "Arial 9"
1564	itk_component add background {
1565	Rappture::Combobox $inner.background -width 10 -editable 0
1566	}
1567	$inner.background choices insert end \
1568	"black" "black" \
1569	"white" "white" \
1570	"grey" "grey"
1571
1572	$itk_component(background) value $_settings(-background)
1573	bind $inner.background <<Value>> \
1574	[itcl::code $this AdjustSetting -background]
1575
1576	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1577	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1578	-variable [itcl::scope _settings(-surfaceopacity)] \
1579	-width 10 \
1580	-showvalue off \
1581	-command [itcl::code $this AdjustSetting -surfaceopacity]
1582
1583	itk_component add field_l {
1584	label $inner.field_l -text "Field" -font "Arial 9"
1585	} {
1586	ignore -font
1587	}
1588	itk_component add field {
1589	Rappture::Combobox $inner.field -width 10 -editable 0
1590	}
1591	bind $inner.field <<Value>> \
1592	[itcl::code $this AdjustSetting -field]
1593
1594	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1595	itk_component add colormap {
1596	Rappture::Combobox $inner.colormap -width 10 -editable 0
1597	}
1598	$inner.colormap choices insert end [GetColormapList]
1599
1600	$itk_component(colormap) value "BCGYR"
1601	bind $inner.colormap <<Value>> \
1602	[itcl::code $this AdjustSetting -colormap]
1603
1604	label $inner.numcontours_l -text "Number of Isolines" -font "Arial 9"
1605	itk_component add numcontours {
1606	Rappture::Spinint $inner.numcontours \
1607	-min 0 -max 50 -font "arial 9"
1608	}
1609	$itk_component(numcontours) value $_settings(-numcontours)
1610	bind $itk_component(numcontours) <<Value>> \
1611	[itcl::code $this AdjustSetting -numcontours]
1612
1613	blt::table $inner \
1614	0,0 $inner.field_l -anchor w -pady 2 \
1615	0,1 $inner.field -anchor w -pady 2 -fill x \
1616	1,0 $inner.colormap_l -anchor w -pady 2 \
1617	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1618	2,0 $inner.linecolor_l -anchor w -pady 2 \
1619	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1620	3,0 $inner.background_l -anchor w -pady 2 \
1621	3,1 $inner.background -anchor w -pady 2 -fill x \
1622	4,0 $inner.numcontours_l -anchor w -pady 2 \
1623	4,1 $inner.numcontours -anchor w -pady 2 \
1624	5,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1625	6,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1626	7,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1627	8,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1628	9,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1629	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1630	11,0 $inner.legend -anchor w -pady 2 \
1631	12,0 $inner.opacity_l -anchor w -pady 2 \
1632	12,1 $inner.opacity -fill x -pady 2 -fill x \
1633
1634	blt::table configure $inner r* c* -resize none
1635	blt::table configure $inner r13 c1 -resize expand
1636	}
1637
1638	itcl::body Rappture::VtkSurfaceViewer::BuildAxisTab {} {
1639
1640	set fg [option get $itk_component(hull) font Font]
1641	#set bfg [option get $itk_component(hull) boldFont Font]
1642
1643	set inner [$itk_component(main) insert end \
1644	-title "Axis Settings" \
1645	-icon [Rappture::icon axis2]]
1646	$inner configure -borderwidth 4
1647
1648	checkbutton $inner.visible \
1649	-text "Axes" \
1650	-variable [itcl::scope _settings(-axesvisible)] \
1651	-command [itcl::code $this AdjustSetting -axesvisible] \
1652	-font "Arial 9"
1653
1654	checkbutton $inner.labels \
1655	-text "Axis Labels" \
1656	-variable [itcl::scope _settings(-axislabels)] \
1657	-command [itcl::code $this AdjustSetting -axislabels] \
1658	-font "Arial 9"
1659	label $inner.grid_l -text "Grid" -font "Arial 9"
1660	checkbutton $inner.xgrid \
1661	-text "X" \
1662	-variable [itcl::scope _settings(-xgrid)] \
1663	-command [itcl::code $this AdjustSetting -xgrid] \
1664	-font "Arial 9"
1665	checkbutton $inner.ygrid \
1666	-text "Y" \
1667	-variable [itcl::scope _settings(-ygrid)] \
1668	-command [itcl::code $this AdjustSetting -ygrid] \
1669	-font "Arial 9"
1670	checkbutton $inner.zgrid \
1671	-text "Z" \
1672	-variable [itcl::scope _settings(-zgrid)] \
1673	-command [itcl::code $this AdjustSetting -zgrid] \
1674	-font "Arial 9"
1675	checkbutton $inner.minorticks \
1676	-text "Minor Ticks" \
1677	-variable [itcl::scope _settings(-axisminorticks)] \
1678	-command [itcl::code $this AdjustSetting -axisminorticks] \
1679	-font "Arial 9"
1680
1681	label $inner.mode_l -text "Mode" -font "Arial 9"
1682
1683	itk_component add axisMode {
1684	Rappture::Combobox $inner.mode -width 10 -editable 0
1685	}
1686	$inner.mode choices insert end \
1687	"static_triad" "static" \
1688	"closest_triad" "closest" \
1689	"furthest_triad" "farthest" \
1690	"outer_edges" "outer"
1691	$itk_component(axisMode) value $_settings(-axismode)
1692	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1693
1694	blt::table $inner \
1695	0,0 $inner.visible -anchor w -cspan 4 \
1696	1,0 $inner.labels -anchor w -cspan 4 \
1697	2,0 $inner.minorticks -anchor w -cspan 4 \
1698	4,0 $inner.grid_l -anchor w \
1699	4,1 $inner.xgrid -anchor w \
1700	4,2 $inner.ygrid -anchor w \
1701	4,3 $inner.zgrid -anchor w \
1702	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1703	5,1 $inner.mode -fill x -cspan 3
1704
1705	blt::table configure $inner r* c* -resize none
1706	blt::table configure $inner r7 c6 -resize expand
1707	blt::table configure $inner r3 -height 0.125i
1708	}
1709
1710	itcl::body Rappture::VtkSurfaceViewer::BuildCameraTab {} {
1711	set inner [$itk_component(main) insert end \
1712	-title "Camera Settings" \
1713	-icon [Rappture::icon camera]]
1714	$inner configure -borderwidth 4
1715
1716	label $inner.view_l -text "view" -font "Arial 9"
1717	set f [frame $inner.view]
1718	foreach side { front back left right top bottom } {
1719	button $f.$side -image [Rappture::icon view$side] \
1720	-command [itcl::code $this SetOrientation $side]
1721	Rappture::Tooltip::for $f.$side "Change the view to $side"
1722	pack $f.$side -side left
1723	}
1724
1725	blt::table $inner \
1726	0,0 $inner.view_l -anchor e -pady 2 \
1727	0,1 $inner.view -anchor w -pady 2
1728	blt::table configure $inner r0 -resize none
1729
1730	set labels { qx qy qz qw xpan ypan zoom }
1731	set row 1
1732	foreach tag $labels {
1733	label $inner.${tag}label -text $tag -font "Arial 9"
1734	entry $inner.${tag} -font "Arial 9" -bg white \
1735	-textvariable [itcl::scope _view(-$tag)]
1736	bind $inner.${tag} <Return> \
1737	[itcl::code $this camera set -${tag}]
1738	bind $inner.${tag} <KP_Enter> \
1739	[itcl::code $this camera set -${tag}]
1740	blt::table $inner \
1741	$row,0 $inner.${tag}label -anchor e -pady 2 \
1742	$row,1 $inner.${tag} -anchor w -pady 2
1743	blt::table configure $inner r$row -resize none
1744	incr row
1745	}
1746	checkbutton $inner.ortho \
1747	-text "Orthographic Projection" \
1748	-variable [itcl::scope _view(-ortho)] \
1749	-command [itcl::code $this camera set -ortho] \
1750	-font "Arial 9"
1751	blt::table $inner \
1752	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1753	blt::table configure $inner r$row -resize none
1754	incr row
1755
1756	blt::table configure $inner c* -resize none
1757	blt::table configure $inner c2 -resize expand
1758	blt::table configure $inner r$row -resize expand
1759	}
1760
1761	#
1762	# camera --
1763	#
1764	itcl::body Rappture::VtkSurfaceViewer::camera {option args} {
1765	switch -- $option {
1766	"show" {
1767	puts [array get _view]
1768	}
1769	"set" {
1770	set what [lindex $args 0]
1771	set x $_view($what)
1772	set code [catch { string is double $x } result]
1773	if { $code != 0 \|\| !$result } {
1774	return
1775	}
1776	switch -- $what {
1777	"-ortho" {
1778	if {$_view($what)} {
1779	SendCmd "camera mode ortho"
1780	} else {
1781	SendCmd "camera mode persp"
1782	}
1783	}
1784	"-xpan" - "-ypan" {
1785	PanCamera
1786	}
1787	"-qx" - "-qy" - "-qz" - "-qw" {
1788	set q [ViewToQuaternion]
1789	$_arcball quaternion $q
1790	EventuallyRotate $q
1791	}
1792	"-zoom" {
1793	SendCmd "camera zoom $_view($what)"
1794	}
1795	}
1796	}
1797	}
1798	}
1799
1800	itcl::body Rappture::VtkSurfaceViewer::GetVtkData { args } {
1801	set bytes ""
1802	foreach dataobj [get] {
1803	foreach cname [$dataobj components] {
1804	set tag $dataobj-$cname
1805	set contents [$dataobj vtkdata $cname]
1806	append bytes "$contents\n"
1807	}
1808	}
1809	return [list .vtk $bytes]
1810	}
1811
1812	itcl::body Rappture::VtkSurfaceViewer::GetImage { args } {
1813	if { [image width $_image(download)] > 0 &&
1814	[image height $_image(download)] > 0 } {
1815	set bytes [$_image(download) data -format "jpeg -quality 100"]
1816	set bytes [Rappture::encoding::decode -as b64 $bytes]
1817	return [list .jpg $bytes]
1818	}
1819	return ""
1820	}
1821
1822	itcl::body Rappture::VtkSurfaceViewer::BuildDownloadPopup { popup command } {
1823	Rappture::Balloon $popup \
1824	-title "[Rappture::filexfer::label downloadWord] as..."
1825	set inner [$popup component inner]
1826	label $inner.summary -text "" -anchor w
1827	radiobutton $inner.vtk_button -text "VTK data file" \
1828	-variable [itcl::scope _downloadPopup(format)] \
1829	-font "Arial 9 " \
1830	-value vtk
1831	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1832	radiobutton $inner.image_button -text "Image File" \
1833	-variable [itcl::scope _downloadPopup(format)] \
1834	-font "Arial 9 " \
1835	-value image
1836	Rappture::Tooltip::for $inner.image_button \
1837	"Save as digital image."
1838
1839	button $inner.ok -text "Save" \
1840	-highlightthickness 0 -pady 2 -padx 3 \
1841	-command $command \
1842	-compound left \
1843	-image [Rappture::icon download]
1844
1845	button $inner.cancel -text "Cancel" \
1846	-highlightthickness 0 -pady 2 -padx 3 \
1847	-command [list $popup deactivate] \
1848	-compound left \
1849	-image [Rappture::icon cancel]
1850
1851	blt::table $inner \
1852	0,0 $inner.summary -cspan 2 \
1853	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1854	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1855	4,1 $inner.cancel -width .9i -fill y \
1856	4,0 $inner.ok -padx 2 -width .9i -fill y
1857	blt::table configure $inner r3 -height 4
1858	blt::table configure $inner r4 -pady 4
1859	raise $inner.image_button
1860	$inner.vtk_button invoke
1861	return $inner
1862	}
1863
1864	itcl::body Rappture::VtkSurfaceViewer::SetObjectStyle { dataobj comp } {
1865	# Parse style string.
1866	set tag $dataobj-$comp
1867	array set style {
1868	-color BCGYR
1869	-edgecolor black
1870	-edges 0
1871	-isolinecolor white
1872	-isolinesvisible 0
1873	-levels 10
1874	-lighting 1
1875	-linewidth 1.0
1876	-opacity 1.0
1877	-outline 0
1878	-surfacevisible 1
1879	-wireframe 0
1880	}
1881	array set style [$dataobj style $comp]
1882
1883	# This is too complicated. We want to set the colormap, number of
1884	# isolines and opacity for the dataset. They can be the default values,
1885	# the style hints loaded with the dataset, or set by user controls. As
1886	# datasets get loaded, they first use the defaults that are overidden
1887	# by the style hints. If the user changes the global controls, then that
1888	# overrides everything else. I don't know what it means when global
1889	# controls are specified as style hints by each dataset. It complicates
1890	# the code to handle aberrant cases.
1891
1892	if { $_changed(-surfaceedges) } {
1893	set style(-edges) $_settings(-surfaceedges)
1894	}
1895	if { $_changed(-surfacelighting) } {
1896	set style(-lighting) $_settings(-surfacelighting)
1897	}
1898	if { $_changed(-surfaceopacity) } {
1899	set style(-opacity) [expr $_settings(-surfaceopacity) * 0.01]
1900	}
1901	if { $_changed(-surfacewireframe) } {
1902	set style(-wireframe) $_settings(-surfacewireframe)
1903	}
1904	if { $_changed(-numcontours) } {
1905	set style(-levels) $_settings(-numcontours)
1906	}
1907	if { $_changed(-colormap) } {
1908	set style(-color) $_settings(-colormap)
1909	}
1910	if { $_currentColormap == "" } {
1911	SetCurrentColormap $style(-color)
1912	$itk_component(colormap) value $style(-color)
1913	}
1914	if { $_currentNumContours != $style(-levels) } {
1915	set _currentNumContours $style(-levels)
1916	set _settings(-numcontours) $_currentNumContours
1917	$itk_component(numcontours) value $_currentNumContours
1918	UpdateContourList
1919	DrawLegend
1920	}
1921	foreach setting {-outline -isolinesvisible -surfacevisible -isolinecolor} {
1922	if {$_changed($setting)} {
1923	# User-modified UI setting overrides style
1924	set style($setting) $_settings($setting)
1925	} else {
1926	# Set UI control to style setting (tool provided or default)
1927	set _settings($setting) $style($setting)
1928	}
1929	}
1930
1931	SendCmd "outline add $tag"
1932	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
1933	SendCmd "outline visible $style(-outline) $tag"
1934
1935	SendCmd "polydata add $tag"
1936	if { $_curFldName != "" } {
1937	SendCmd "polydata colormode $_colorMode $_curFldName $tag"
1938	}
1939	SendCmd "polydata edges $style(-edges) $tag"
1940	set _settings(-surfaceedges) $style(-edges)
1941	#SendCmd "polydata color [Color2RGB $settings(-color)] $tag"
1942	SendCmd "polydata lighting $style(-lighting) $tag"
1943	set _settings(-surfacelighting) $style(-lighting)
1944	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1945	SendCmd "polydata linewidth $style(-linewidth) $tag"
1946	SendCmd "polydata opacity $style(-opacity) $tag"
1947	set _settings(-surfaceopacity) [expr $style(-opacity) * 100.0]
1948	SetCurrentColormap $style(-color)
1949	SendCmd "polydata wireframe $style(-wireframe) $tag"
1950	set _settings(-surfacewireframe) $style(-wireframe)
1951
1952	SendCmd [list contour2d add contourlist $_contourList $tag]
1953	SendCmd "contour2d colormode constant {} $tag"
1954	SendCmd "contour2d color [Color2RGB $style(-isolinecolor)] $tag"
1955	}
1956
1957	itcl::body Rappture::VtkSurfaceViewer::IsValidObject { dataobj } {
1958	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
1959	return 0
1960	}
1961	return 1
1962	}
1963
1964	#
1965	# EnterLegend --
1966	#
1967	itcl::body Rappture::VtkSurfaceViewer::EnterLegend { x y } {
1968	SetLegendTip $x $y
1969	}
1970
1971	#
1972	# MotionLegend --
1973	#
1974	itcl::body Rappture::VtkSurfaceViewer::MotionLegend { x y } {
1975	Rappture::Tooltip::tooltip cancel
1976	set c $itk_component(view)
1977	set cw [winfo width $c]
1978	set ch [winfo height $c]
1979	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
1980	SetLegendTip $x $y
1981	}
1982	}
1983
1984	#
1985	# LeaveLegend --
1986	#
1987	itcl::body Rappture::VtkSurfaceViewer::LeaveLegend { } {
1988	Rappture::Tooltip::tooltip cancel
1989	.rappturetooltip configure -icon ""
1990	}
1991
1992	#
1993	# SetLegendTip --
1994	#
1995	itcl::body Rappture::VtkSurfaceViewer::SetLegendTip { x y } {
1996	set fname $_curFldName
1997	set c $itk_component(view)
1998	set w [winfo width $c]
1999	set h [winfo height $c]
2000
2001	set font "Arial 8"
2002	set lineht [font metrics $font -linespace]
2003
2004	set ih [image height $_image(legend)]
2005	set iy [expr $y - ($lineht + 2)]
2006
2007	if { [string match "component*" $fname] } {
2008	set title ""
2009	} else {
2010	if { [info exists _fields($fname)] } {
2011	foreach { title units } $_fields($fname) break
2012	if { $units != "" } {
2013	set title [format "%s (%s)" $title $units]
2014	}
2015	} else {
2016	set title $fname
2017	}
2018	}
2019	# If there's a legend title, increase the offset by the line height.
2020	if { $title != "" } {
2021	incr iy -$lineht
2022	}
2023	# Make a swatch of the selected color
2024	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2025	return
2026	}
2027	if { ![info exists _image(swatch)] } {
2028	set _image(swatch) [image create photo -width 24 -height 24]
2029	}
2030	set color [eval format "\#%02x%02x%02x" $pixel]
2031	$_image(swatch) put black -to 0 0 23 23
2032	$_image(swatch) put $color -to 1 1 22 22
2033	.rappturetooltip configure -icon $_image(swatch)
2034
2035	# Compute the value of the point
2036	if { [info exists _limits($_curFldName)] } {
2037	foreach { vmin vmax } $_limits($_curFldName) break
2038	set t [expr 1.0 - (double($iy) / double($ih-1))]
2039	set value [expr $t * ($vmax - $vmin) + $vmin]
2040	} else {
2041	set value 0.0
2042	}
2043	set tx [expr $x + 15]
2044	set ty [expr $y - 5]
2045	if { [info exists _isolines($y)] } {
2046	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2047	} else {
2048	Rappture::Tooltip::text $c [format "$title %g" $value]
2049	}
2050	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2051	}
2052
2053	#
2054	# ReceiveLegend --
2055	#
2056	# Invoked automatically whenever the "legend" command comes in from
2057	# the rendering server. Indicates that binary image data with the
2058	# specified <size> will follow.
2059	#
2060	itcl::body Rappture::VtkSurfaceViewer::ReceiveLegend { colormap title min max size } {
2061	DebugTrace "Enter"
2062	set _title $title
2063	regsub {\(mag\)} $title "" _title
2064	if { [IsConnected] } {
2065	set bytes [ReceiveBytes $size]
2066	if { ![info exists _image(legend)] } {
2067	set _image(legend) [image create photo]
2068	}
2069	$_image(legend) configure -data $bytes
2070	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2071	if { [catch {DrawLegend} errs] != 0 } {
2072	global errorInfo
2073	puts stderr "errs=$errs errorInfo=$errorInfo"
2074	}
2075	}
2076	}
2077
2078	#
2079	# DrawLegend --
2080	#
2081	# Draws the legend on the canvas on the right side of the plot area.
2082	#
2083	itcl::body Rappture::VtkSurfaceViewer::DrawLegend {} {
2084	set fname $_curFldName
2085	set c $itk_component(view)
2086	set w [winfo width $c]
2087	set h [winfo height $c]
2088	set font "Arial 8"
2089	set lineht [font metrics $font -linespace]
2090
2091	if { [string match "component*" $fname] } {
2092	set title ""
2093	} else {
2094	if { [info exists _fields($fname)] } {
2095	foreach { title units } $_fields($fname) break
2096	if { $units != "" } {
2097	set title [format "%s (%s)" $title $units]
2098	}
2099	} else {
2100	set title $fname
2101	}
2102	}
2103	set x [expr $w - 2]
2104	if { !$_settings(-legendvisible) } {
2105	$c delete legend
2106	return
2107	}
2108	if { [$c find withtag "legend"] == "" } {
2109	set y 2
2110	# If there's a legend title, create a text item for the title.
2111	$c create text $x $y \
2112	-anchor ne \
2113	-fill $itk_option(-plotforeground) -tags "title legend" \
2114	-font $font
2115	if { $title != "" } {
2116	incr y $lineht
2117	}
2118	$c create text $x $y \
2119	-anchor ne \
2120	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2121	-font $font
2122	incr y $lineht
2123	$c create image $x $y \
2124	-anchor ne \
2125	-image $_image(legend) -tags "colormap legend"
2126	$c create rectangle $x $y 1 1 \
2127	-fill "" -outline "" -tags "sensor legend"
2128	$c create text $x [expr {$h-2}] \
2129	-anchor se \
2130	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2131	-font $font
2132	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2133	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2134	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2135	}
2136	$c delete isoline
2137	set x2 $x
2138	set iw [image width $_image(legend)]
2139	set ih [image height $_image(legend)]
2140	set x1 [expr $x2 - ($iw*12)/10]
2141	set color $_settings(-isolinecolor)
2142	# Draw the isolines on the legend.
2143	array unset _isolines
2144	if { $color != "none" && [info exists _limits($_curFldName)] &&
2145	$_settings(-isolinesvisible) && $_settings(-numcontours) > 0 } {
2146
2147	foreach { vmin vmax } $_limits($_curFldName) break
2148	set range [expr double($vmax - $vmin)]
2149	if { $range <= 0.0 } {
2150	set range 1.0; # Min is greater or equal to max.
2151	}
2152	set tags "isoline legend"
2153	set offset [expr 2 + $lineht]
2154	if { $title != "" } {
2155	incr offset $lineht
2156	}
2157	foreach value $_contourList {
2158	set norm [expr 1.0 - (($value - $vmin) / $range)]
2159	set y1 [expr int(round(($norm * $ih) + $offset))]
2160	for { set off 0 } { $off < 3 } { incr off } {
2161	set _isolines([expr $y1 + $off]) $value
2162	set _isolines([expr $y1 - $off]) $value
2163	}
2164	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2165	}
2166	}
2167
2168	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2169	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2170	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2171	# Reset the item coordinates according the current size of the plot.
2172	$c itemconfigure title -text $title
2173	if { [info exists _limits($_curFldName)] } {
2174	foreach { vmin vmax } $_limits($_curFldName) break
2175	$c itemconfigure vmin -text [format %g $vmin]
2176	$c itemconfigure vmax -text [format %g $vmax]
2177	}
2178	set y 2
2179	# If there's a legend title, move the title to the correct position
2180	if { $title != "" } {
2181	$c itemconfigure title -text $title
2182	$c coords title $x $y
2183	incr y $lineht
2184	$c raise title
2185	}
2186	$c coords vmax $x $y
2187	incr y $lineht
2188	$c coords colormap $x $y
2189	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2190	$c raise sensor
2191	$c coords vmin $x [expr {$h - 2}]
2192	}
2193
2194	# ----------------------------------------------------------------------
2195	# USAGE: LegendTitleAction post
2196	# USAGE: LegendTitleAction enter
2197	# USAGE: LegendTitleAction leave
2198	# USAGE: LegendTitleAction save
2199	#
2200	# Used internally to handle the dropdown list for the fields menu combobox.
2201	# The post option is invoked when the field title is pressed to launch the
2202	# dropdown. The enter option is invoked when the user mouses over the field
2203	# title. The leave option is invoked when the user moves the mouse away
2204	# from the field title. The save option is invoked whenever there is a
2205	# selection from the list, to alert the visualization server.
2206	# ----------------------------------------------------------------------
2207	itcl::body Rappture::VtkSurfaceViewer::LegendTitleAction {option} {
2208	set c $itk_component(view)
2209	switch -- $option {
2210	post {
2211	foreach { x1 y1 x2 y2 } [$c bbox title] break
2212	set cw [winfo width $itk_component(view)]
2213	set mw [winfo reqwidth $itk_component(fieldmenu)]
2214	set x1 [expr $cw - $mw]
2215	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2216	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2217	tk_popup $itk_component(fieldmenu) $x $y
2218	}
2219	enter {
2220	$c itemconfigure title -fill red
2221	}
2222	leave {
2223	$c itemconfigure title -fill $itk_option(-plotforeground)
2224	}
2225	save {
2226	$itk_component(field) value $_curFldLabel
2227	AdjustSetting -field
2228	}
2229	default {
2230	error "bad option \"$option\": should be post, enter, leave or save"
2231	}
2232	}
2233	}
2234
2235	#
2236	# SetCurrentColormap --
2237	#
2238	itcl::body Rappture::VtkSurfaceViewer::SetCurrentColormap { name } {
2239	# Keep track of the colormaps that we build.
2240	if { ![info exists _colormaps($name)] } {
2241	BuildColormap $name
2242	set _colormaps($name) 1
2243	}
2244	set _currentColormap $name
2245	SendCmd "contour2d colormap $_currentColormap"
2246	SendCmd "polydata colormap $_currentColormap"
2247	}
2248
2249	#
2250	# BuildColormap --
2251	#
2252	# Build the designated colormap on the server.
2253	#
2254	itcl::body Rappture::VtkSurfaceViewer::BuildColormap { name } {
2255	set cmap [ColorsToColormap $name]
2256	if { [llength $cmap] == 0 } {
2257	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2258	}
2259	set amap "0.0 1.0 1.0 1.0"
2260	SendCmd "colormap add $name { $cmap } { $amap }"
2261	}
2262
2263	itcl::body Rappture::VtkSurfaceViewer::SetOrientation { side } {
2264	array set positions {
2265	front "1 0 0 0"
2266	back "0 0 1 0"
2267	left "0.707107 0 -0.707107 0"
2268	right "0.707107 0 0.707107 0"
2269	top "0.707107 -0.707107 0 0"
2270	bottom "0.707107 0.707107 0 0"
2271	}
2272	foreach name { -qw -qx -qy -qz } value $positions($side) {
2273	set _view($name) $value
2274	}
2275	set q [ViewToQuaternion]
2276	$_arcball quaternion $q
2277	SendCmd "camera orient $q"
2278	SendCmd "camera reset"
2279	set _view(-xpan) 0
2280	set _view(-ypan) 0
2281	set _view(-zoom) 1.0
2282	}
2283
2284	itcl::body Rappture::VtkSurfaceViewer::UpdateContourList {} {
2285	if { ![info exists _limits($_curFldName)] } {
2286	return
2287	}
2288	if { $_currentNumContours < 1 } {
2289	set _contourList ""
2290	return
2291	}
2292	foreach { vmin vmax } $_limits($_curFldName) break
2293	set v [blt::vector create \#auto]
2294	$v seq $vmin $vmax [expr $_currentNumContours+2]
2295	$v delete end 0
2296	set _contourList [$v range 0 end]
2297	blt::vector destroy $v
2298	}
2299
2300	itcl::body Rappture::VtkSurfaceViewer::SetCurrentFieldName { dataobj } {
2301	set _first $dataobj
2302	$itk_component(field) choices delete 0 end
2303	$itk_component(fieldmenu) delete 0 end
2304	array unset _fields
2305	set _curFldName ""
2306	foreach cname [$_first components] {
2307	foreach fname [$_first fieldnames $cname] {
2308	if { [info exists _fields($fname)] } {
2309	continue
2310	}
2311	foreach { label units components } \
2312	[$_first fieldinfo $fname] break
2313	$itk_component(field) choices insert end "$fname" "$label"
2314	$itk_component(fieldmenu) add radiobutton -label "$label" \
2315	-value $label -variable [itcl::scope _curFldLabel] \
2316	-selectcolor red \
2317	-activebackground $itk_option(-plotbackground) \
2318	-activeforeground $itk_option(-plotforeground) \
2319	-font "Arial 8" \
2320	-command [itcl::code $this LegendTitleAction save]
2321	set _fields($fname) [list $label $units $components]
2322	if { $_curFldName == "" } {
2323	set _curFldName $fname
2324	set _curFldLabel $label
2325	}
2326	}
2327	}
2328	$itk_component(field) value $_curFldLabel
2329	}

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