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source: branches/1.3/gui/scripts/vtksurfaceviewer.tcl @ 4531

Last change on this file since 4531 was 4487, checked in by ldelgass, 10 years ago
merge r4381 from trunk
File size: 76.6 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 Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *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 { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method limits { colormap }
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method Connect {}
66	protected method CurrentDatasets {args}
67	protected method Disconnect {}
68	protected method DoResize {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method ReceiveLegend { colormap title vmin vmax size }
78	protected method Rotate {option x y}
79	protected method Zoom {option}
80
81	# The following methods are only used by this class.
82	private method BuildAxisTab {}
83	private method BuildCameraTab {}
84	private method BuildColormap { name }
85	private method BuildDownloadPopup { widget command }
86	private method BuildSurfaceTab {}
87	private method Combo { option }
88	private method DrawLegend {}
89	private method EnterLegend { x y }
90	private method EventuallyResize { w h }
91	private method EventuallyRotate { q }
92	private method EventuallyRequestLegend {}
93	private method GetImage { args }
94	private method GetVtkData { args }
95	private method IsValidObject { dataobj }
96	private method LeaveLegend {}
97	private method MotionLegend { x y }
98	private method PanCamera {}
99	private method RequestLegend {}
100	private method SetLegendTip { x y }
101	private method SetObjectStyle { dataobj comp }
102	private method SetCurrentColormap { color }
103	private method SetOrientation { side }
104	private method UpdateContourList {}
105
106	private variable _arcball ""
107
108	private variable _dlist "" ; # list of data objects
109	private variable _obj2datasets
110	private variable _obj2ovride ; # maps dataobj => style override
111	private variable _datasets ; # contains all the dataobj-component
112	; # datasets in the server
113	private variable _colormaps ; # contains all the colormaps
114	; # in the server.
115	# The name of the current colormap used. The colormap is global to all
116	# heightmaps displayed.
117	private variable _currentColormap ""
118	private variable _currentNumContours -1
119
120	private variable _dataset2style ;# maps dataobj-component to transfunc
121
122	private variable _click ; # info used for rotate operations
123	private variable _limits ; # autoscale min/max for all axes
124	private variable _view ; # view params for 3D view
125	private variable _settings
126	private variable _style; # Array of current component styles.
127	private variable _changed
128	private variable _initialStyle; # Array of initial component styles.
129	private variable _reset 1; # indicates if camera needs to be reset
130	# to starting position.
131
132	private variable _first "" ; # This is the topmost dataset.
133	private variable _start 0
134	private variable _title ""
135	private variable _isolines
136	private variable _contourList ""
137
138	common _downloadPopup; # download options from popup
139	private common _hardcopy
140	private variable _width 0
141	private variable _height 0
142	private variable _resizePending 0
143	private variable _rotatePending 0
144	private variable _legendPending 0
145	private variable _field ""
146	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
147	private variable _fieldNames {}
148	private variable _fields
149	private variable _curFldName ""
150	private variable _curFldLabel ""
151	}
152
153	itk::usual VtkSurfaceViewer {
154	keep -background -foreground -cursor -font
155	keep -plotbackground -plotforeground
156	}
157
158	# ----------------------------------------------------------------------
159	# CONSTRUCTOR
160	# ----------------------------------------------------------------------
161	itcl::body Rappture::VtkSurfaceViewer::constructor {hostlist args} {
162	package require vtk
163	set _serverType "vtkvis"
164
165	# Rebuild event
166	$_dispatcher register !rebuild
167	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
168
169	# Resize event
170	$_dispatcher register !resize
171	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
172
173	# Rotate event
174	$_dispatcher register !rotate
175	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
176
177	# Legend event
178	$_dispatcher register !legend
179	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
180
181	#
182	# Populate parser with commands handle incoming requests
183	#
184	$_parser alias image [itcl::code $this ReceiveImage]
185	$_parser alias dataset [itcl::code $this ReceiveDataset]
186	$_parser alias legend [itcl::code $this ReceiveLegend]
187
188	# Initialize the view to some default parameters.
189	array set _view {
190	qw 0.853553
191	qx -0.353553
192	qy 0.353553
193	qz 0.146447
194	zoom 1.0
195	xpan 0
196	ypan 0
197	ortho 0
198	}
199	set _arcball [blt::arcball create 100 100]
200	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
201	$_arcball quaternion $q
202
203	array set _settings {
204	-axesvisible 1
205	-axislabelsvisible 1
206	-background black
207	-colormap BCGYR
208	-colormapvisible 1
209	-field "Default"
210	-isolinecolor white
211	-isolinesvisible 0
212	-legendvisible 1
213	-numcontours 10
214	-surfaceedges 0
215	-surfacelighting 1
216	-surfaceopacity 100
217	-surfaceoutline 0
218	-surfacevisible 1
219	-surfacewireframe 0
220	-xaxisgrid 0
221	-yaxisgrid 0
222	-zaxisgrid 0
223	}
224	array set _changed {
225	-colormap 0
226	-numcontours 0
227	-surfaceopacity 0
228	}
229
230	itk_component add view {
231	canvas $itk_component(plotarea).view \
232	-highlightthickness 0 -borderwidth 0
233	} {
234	usual
235	ignore -highlightthickness -borderwidth -background
236	}
237
238	itk_component add fieldmenu {
239	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
240	-tearoff 0
241	} {
242	usual
243	ignore -background -foreground -relief -tearoff
244	}
245	set c $itk_component(view)
246	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
247	bind $c <4> [itcl::code $this Zoom in 0.25]
248	bind $c <5> [itcl::code $this Zoom out 0.25]
249	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
250	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
251	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
252	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
253	bind $c <Enter> "focus %W"
254	bind $c <Control-F1> [itcl::code $this ToggleConsole]
255
256	# Fix the scrollregion in case we go off screen
257	$c configure -scrollregion [$c bbox all]
258
259	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
260	set _map(cwidth) -1
261	set _map(cheight) -1
262	set _map(zoom) 1.0
263	set _map(original) ""
264
265	set f [$itk_component(main) component controls]
266	itk_component add reset {
267	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
268	-highlightthickness 0 \
269	-image [Rappture::icon reset-view] \
270	-command [itcl::code $this Zoom reset]
271	} {
272	usual
273	ignore -highlightthickness
274	}
275	pack $itk_component(reset) -side top -padx 2 -pady 2
276	Rappture::Tooltip::for $itk_component(reset) \
277	"Reset the view to the default zoom level"
278
279	itk_component add zoomin {
280	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
281	-highlightthickness 0 \
282	-image [Rappture::icon zoom-in] \
283	-command [itcl::code $this Zoom in]
284	} {
285	usual
286	ignore -highlightthickness
287	}
288	pack $itk_component(zoomin) -side top -padx 2 -pady 2
289	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
290
291	itk_component add zoomout {
292	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
293	-highlightthickness 0 \
294	-image [Rappture::icon zoom-out] \
295	-command [itcl::code $this Zoom out]
296	} {
297	usual
298	ignore -highlightthickness
299	}
300	pack $itk_component(zoomout) -side top -padx 2 -pady 2
301	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
302
303	itk_component add surface {
304	Rappture::PushButton $f.surface \
305	-onimage [Rappture::icon volume-on] \
306	-offimage [Rappture::icon volume-off] \
307	-variable [itcl::scope _settings(-surfacevisible)] \
308	-command [itcl::code $this AdjustSetting -surfacevisible]
309	}
310	$itk_component(surface) select
311	Rappture::Tooltip::for $itk_component(surface) \
312	"Don't display the surface"
313	pack $itk_component(surface) -padx 2 -pady 2
314
315	if { [catch {
316	BuildSurfaceTab
317	BuildAxisTab
318	BuildCameraTab
319	} errs] != 0 } {
320	puts stderr errs=$errs
321	}
322	# Legend
323
324	set _image(legend) [image create photo]
325	itk_component add legend {
326	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
327	} {
328	usual
329	ignore -highlightthickness
330	rename -background -plotbackground plotBackground Background
331	}
332
333	# Hack around the Tk panewindow. The problem is that the requested
334	# size of the 3d view isn't set until an image is retrieved from
335	# the server. So the panewindow uses the tiny size.
336	set w 10000
337	pack forget $itk_component(view)
338	blt::table $itk_component(plotarea) \
339	0,0 $itk_component(view) -fill both -reqwidth $w
340	blt::table configure $itk_component(plotarea) c1 -resize none
341
342	# Bindings for rotation via mouse
343	bind $itk_component(view) <ButtonPress-1> \
344	[itcl::code $this Rotate click %x %y]
345	bind $itk_component(view) <B1-Motion> \
346	[itcl::code $this Rotate drag %x %y]
347	bind $itk_component(view) <ButtonRelease-1> \
348	[itcl::code $this Rotate release %x %y]
349
350	# Bindings for panning via mouse
351	bind $itk_component(view) <ButtonPress-2> \
352	[itcl::code $this Pan click %x %y]
353	bind $itk_component(view) <B2-Motion> \
354	[itcl::code $this Pan drag %x %y]
355	bind $itk_component(view) <ButtonRelease-2> \
356	[itcl::code $this Pan release %x %y]
357
358	#bind $itk_component(view) <ButtonRelease-3> \
359	# [itcl::code $this Pick %x %y]
360
361	# Bindings for panning via keyboard
362	bind $itk_component(view) <KeyPress-Left> \
363	[itcl::code $this Pan set -10 0]
364	bind $itk_component(view) <KeyPress-Right> \
365	[itcl::code $this Pan set 10 0]
366	bind $itk_component(view) <KeyPress-Up> \
367	[itcl::code $this Pan set 0 -10]
368	bind $itk_component(view) <KeyPress-Down> \
369	[itcl::code $this Pan set 0 10]
370	bind $itk_component(view) <Shift-KeyPress-Left> \
371	[itcl::code $this Pan set -2 0]
372	bind $itk_component(view) <Shift-KeyPress-Right> \
373	[itcl::code $this Pan set 2 0]
374	bind $itk_component(view) <Shift-KeyPress-Up> \
375	[itcl::code $this Pan set 0 -2]
376	bind $itk_component(view) <Shift-KeyPress-Down> \
377	[itcl::code $this Pan set 0 2]
378
379	# Bindings for zoom via keyboard
380	bind $itk_component(view) <KeyPress-Prior> \
381	[itcl::code $this Zoom out]
382	bind $itk_component(view) <KeyPress-Next> \
383	[itcl::code $this Zoom in]
384
385	bind $itk_component(view) <Enter> "focus $itk_component(view)"
386
387	if {[string equal "x11" [tk windowingsystem]]} {
388	# Bindings for zoom via mouse
389	bind $itk_component(view) <4> [itcl::code $this Zoom out]
390	bind $itk_component(view) <5> [itcl::code $this Zoom in]
391	}
392
393	set _image(download) [image create photo]
394
395	eval itk_initialize $args
396
397	EnableWaitDialog 500
398	Connect
399	}
400
401	# ----------------------------------------------------------------------
402	# DESTRUCTOR
403	# ----------------------------------------------------------------------
404	itcl::body Rappture::VtkSurfaceViewer::destructor {} {
405	Disconnect
406	image delete $_image(plot)
407	image delete $_image(download)
408	catch { blt::arcball destroy $_arcball }
409	}
410
411	itcl::body Rappture::VtkSurfaceViewer::DoResize {} {
412	if { $_width < 2 } {
413	set _width 500
414	}
415	if { $_height < 2 } {
416	set _height 500
417	}
418	set _start [clock clicks -milliseconds]
419	SendCmd "screen size $_width $_height"
420
421	EventuallyRequestLegend
422	set _resizePending 0
423	}
424
425	itcl::body Rappture::VtkSurfaceViewer::DoRotate {} {
426	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
427	SendCmd "camera orient $q"
428	set _rotatePending 0
429	}
430
431	itcl::body Rappture::VtkSurfaceViewer::EventuallyRequestLegend {} {
432	if { !$_legendPending } {
433	set _legendPending 1
434	$_dispatcher event -idle !legend
435	}
436	}
437
438	itcl::body Rappture::VtkSurfaceViewer::EventuallyResize { w h } {
439	set _width $w
440	set _height $h
441	$_arcball resize $w $h
442	if { !$_resizePending } {
443	set _resizePending 1
444	$_dispatcher event -after 400 !resize
445	}
446	}
447
448	set rotate_delay 100
449
450	itcl::body Rappture::VtkSurfaceViewer::EventuallyRotate { q } {
451	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
452	if { !$_rotatePending } {
453	set _rotatePending 1
454	global rotate_delay
455	$_dispatcher event -after $rotate_delay !rotate
456	}
457	}
458
459	# ----------------------------------------------------------------------
460	# USAGE: add <dataobj> ?<settings>?
461	#
462	# Clients use this to add a data object to the plot. The optional
463	# <settings> are used to configure the plot. Allowed settings are
464	# -color, -brightness, -width, -linestyle, and -raise.
465	# ----------------------------------------------------------------------
466	itcl::body Rappture::VtkSurfaceViewer::add {dataobj {settings ""}} {
467	if { ![$dataobj isvalid] } {
468	return; # Object doesn't contain valid data.
469	}
470	array set params {
471	-color auto
472	-width 1
473	-linestyle solid
474	-brightness 0
475	-raise 0
476	-description ""
477	-param ""
478	-type ""
479	}
480	array set params $settings
481	set params(-description) ""
482	set params(-param) ""
483	array set params $settings
484
485	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
486	# can't handle -autocolors yet
487	set params(-color) black
488	}
489	set pos [lsearch -exact $_dlist $dataobj]
490	if {$pos < 0} {
491	lappend _dlist $dataobj
492	}
493	set _obj2ovride($dataobj-color) $params(-color)
494	set _obj2ovride($dataobj-width) $params(-width)
495	set _obj2ovride($dataobj-raise) $params(-raise)
496	$_dispatcher event -idle !rebuild
497	}
498
499
500	# ----------------------------------------------------------------------
501	# USAGE: delete ?<dataobj1> <dataobj2> ...?
502	#
503	# Clients use this to delete a dataobj from the plot. If no dataobjs
504	# are specified, then all dataobjs are deleted. No data objects are
505	# deleted. They are only removed from the display list.
506	#
507	# ----------------------------------------------------------------------
508	itcl::body Rappture::VtkSurfaceViewer::delete {args} {
509	if { [llength $args] == 0} {
510	set args $_dlist
511	}
512	# Delete all specified dataobjs
513	set changed 0
514	foreach dataobj $args {
515	set pos [lsearch -exact $_dlist $dataobj]
516	if { $pos < 0 } {
517	continue; # Don't know anything about it.
518	}
519	# Remove it from the dataobj list.
520	set _dlist [lreplace $_dlist $pos $pos]
521	array unset _obj2ovride $dataobj-*
522	array unset _settings $dataobj-*
523	set changed 1
524	}
525	# If anything changed, then rebuild the plot
526	if { $changed } {
527	$_dispatcher event -idle !rebuild
528	}
529	}
530
531	# ----------------------------------------------------------------------
532	# USAGE: get ?-objects?
533	# USAGE: get ?-visible?
534	# USAGE: get ?-image view?
535	#
536	# Clients use this to query the list of objects being plotted, in
537	# order from bottom to top of this result. The optional "-image"
538	# flag can also request the internal images being shown.
539	# ----------------------------------------------------------------------
540	itcl::body Rappture::VtkSurfaceViewer::get {args} {
541	if {[llength $args] == 0} {
542	set args "-objects"
543	}
544
545	set op [lindex $args 0]
546	switch -- $op {
547	"-objects" {
548	# put the dataobj list in order according to -raise options
549	set dlist {}
550	foreach dataobj $_dlist {
551	if { ![IsValidObject $dataobj] } {
552	continue
553	}
554	if {[info exists _obj2ovride($dataobj-raise)] &&
555	$_obj2ovride($dataobj-raise)} {
556	set dlist [linsert $dlist 0 $dataobj]
557	} else {
558	lappend dlist $dataobj
559	}
560	}
561	return $dlist
562	}
563	"-visible" {
564	set dlist {}
565	foreach dataobj $_dlist {
566	if { ![IsValidObject $dataobj] } {
567	continue
568	}
569	if { ![info exists _obj2ovride($dataobj-raise)] } {
570	# No setting indicates that the object isn't visible.
571	continue
572	}
573	# Otherwise use the -raise parameter to put the object to
574	# the front of the list.
575	if { $_obj2ovride($dataobj-raise) } {
576	set dlist [linsert $dlist 0 $dataobj]
577	} else {
578	lappend dlist $dataobj
579	}
580	}
581	return $dlist
582	}
583	-image {
584	if {[llength $args] != 2} {
585	error "wrong # args: should be \"get -image view\""
586	}
587	switch -- [lindex $args end] {
588	view {
589	return $_image(plot)
590	}
591	default {
592	error "bad image name \"[lindex $args end]\": should be view"
593	}
594	}
595	}
596	default {
597	error "bad option \"$op\": should be -objects or -image"
598	}
599	}
600	}
601
602	# ----------------------------------------------------------------------
603	# USAGE: scale ?<data1> <data2> ...?
604	#
605	# Sets the default limits for the overall plot according to the
606	# limits of the data for all of the given <data> objects. This
607	# accounts for all objects--even those not showing on the screen.
608	# Because of this, the limits are appropriate for all objects as
609	# the user scans through data in the ResultSet viewer.
610	# ----------------------------------------------------------------------
611	itcl::body Rappture::VtkSurfaceViewer::scale { args } {
612	foreach dataobj $args {
613	if { ![$dataobj isvalid] } {
614	continue; # Object doesn't contain valid data.
615	}
616	foreach axis { x y z } {
617	set lim [$dataobj limits $axis]
618	if { ![info exists _limits($axis)] } {
619	set _limits($axis) $lim
620	continue
621	}
622	foreach {min max} $lim break
623	foreach {amin amax} $_limits($axis) break
624	if { $amin > $min } {
625	set amin $min
626	}
627	if { $amax < $max } {
628	set amax $max
629	}
630	set _limits($axis) [list $amin $amax]
631	}
632	foreach { fname lim } [$dataobj fieldlimits] {
633	if { ![info exists _limits($fname)] } {
634	set _limits($fname) $lim
635	continue
636	}
637	foreach {min max} $lim break
638	foreach {fmin fmax} $_limits($fname) break
639	if { $fmin > $min } {
640	set fmin $min
641	}
642	if { $fmax < $max } {
643	set fmax $max
644	}
645	set _limits($fname) [list $fmin $fmax]
646	}
647	}
648	}
649
650	# ----------------------------------------------------------------------
651	# USAGE: download coming
652	# USAGE: download controls <downloadCommand>
653	# USAGE: download now
654	#
655	# Clients use this method to create a downloadable representation
656	# of the plot. Returns a list of the form {ext string}, where
657	# "ext" is the file extension (indicating the type of data) and
658	# "string" is the data itself.
659	# ----------------------------------------------------------------------
660	itcl::body Rappture::VtkSurfaceViewer::download {option args} {
661	switch $option {
662	coming {
663	if {[catch {
664	blt::winop snap $itk_component(plotarea) $_image(download)
665	}]} {
666	$_image(download) configure -width 1 -height 1
667	$_image(download) put #000000
668	}
669	}
670	controls {
671	set popup .vtkviewerdownload
672	if { ![winfo exists .vtkviewerdownload] } {
673	set inner [BuildDownloadPopup $popup [lindex $args 0]]
674	} else {
675	set inner [$popup component inner]
676	}
677	set _downloadPopup(image_controls) $inner.image_frame
678	set num [llength [get]]
679	set num [expr {($num == 1) ? "1 result" : "$num results"}]
680	set word [Rappture::filexfer::label downloadWord]
681	$inner.summary configure -text "$word $num in the following format:"
682	update idletasks ;# Fix initial sizes
683	return $popup
684	}
685	now {
686	set popup .vtkviewerdownload
687	if {[winfo exists .vtkviewerdownload]} {
688	$popup deactivate
689	}
690	switch -- $_downloadPopup(format) {
691	"image" {
692	return [$this GetImage [lindex $args 0]]
693	}
694	"vtk" {
695	return [$this GetVtkData [lindex $args 0]]
696	}
697	}
698	return ""
699	}
700	default {
701	error "bad option \"$option\": should be coming, controls, now"
702	}
703	}
704	}
705
706	# ----------------------------------------------------------------------
707	# USAGE: Connect ?<host:port>,<host:port>...?
708	#
709	# Clients use this method to establish a connection to a new
710	# server, or to reestablish a connection to the previous server.
711	# Any existing connection is automatically closed.
712	# ----------------------------------------------------------------------
713	itcl::body Rappture::VtkSurfaceViewer::Connect {} {
714	set _hosts [GetServerList "vtkvis"]
715	if { "" == $_hosts } {
716	return 0
717	}
718	set result [VisViewer::Connect $_hosts]
719	if { $result } {
720	if { $_reportClientInfo } {
721	# Tell the server the viewer, hub, user and session.
722	# Do this immediately on connect before buffering any commands
723	global env
724
725	set info {}
726	set user "???"
727	if { [info exists env(USER)] } {
728	set user $env(USER)
729	}
730	set session "???"
731	if { [info exists env(SESSION)] } {
732	set session $env(SESSION)
733	}
734	lappend info "hub" [exec hostname]
735	lappend info "client" "vtksurfaceviewer"
736	lappend info "user" $user
737	lappend info "session" $session
738	SendCmd "clientinfo [list $info]"
739	}
740
741	set w [winfo width $itk_component(view)]
742	set h [winfo height $itk_component(view)]
743	EventuallyResize $w $h
744	}
745	return $result
746	}
747
748	#
749	# isconnected --
750	#
751	# Indicates if we are currently connected to the visualization server.
752	#
753	itcl::body Rappture::VtkSurfaceViewer::isconnected {} {
754	return [VisViewer::IsConnected]
755	}
756
757	#
758	# disconnect --
759	#
760	itcl::body Rappture::VtkSurfaceViewer::disconnect {} {
761	Disconnect
762	set _reset 1
763	}
764
765	#
766	# Disconnect --
767	#
768	# Clients use this method to disconnect from the current rendering
769	# server.
770	#
771	itcl::body Rappture::VtkSurfaceViewer::Disconnect {} {
772	VisViewer::Disconnect
773
774	$_dispatcher cancel !rebuild
775	$_dispatcher cancel !resize
776	$_dispatcher cancel !rotate
777	$_dispatcher cancel !legend
778	# disconnected -- no more data sitting on server
779	set _outbuf ""
780	array unset _datasets
781	array unset _data
782	array unset _colormaps
783	array unset _seeds
784	array unset _dataset2style
785	array unset _obj2datasets
786	}
787
788	# ----------------------------------------------------------------------
789	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
790	#
791	# Invoked automatically whenever the "image" command comes in from
792	# the rendering server. Indicates that binary image data with the
793	# specified <size> will follow.
794	# ----------------------------------------------------------------------
795	itcl::body Rappture::VtkSurfaceViewer::ReceiveImage { args } {
796	array set info {
797	-token "???"
798	-bytes 0
799	-type image
800	}
801	array set info $args
802	set bytes [ReceiveBytes $info(-bytes)]
803	if { $info(-type) == "image" } {
804	if 0 {
805	set f [open "last.ppm" "w"]
806	puts $f $bytes
807	close $f
808	}
809	$_image(plot) configure -data $bytes
810	#set time [clock seconds]
811	#set date [clock format $time]
812	#set w [image width $_image(plot)]
813	#set h [image height $_image(plot)]
814	#puts stderr "$date: received image ${w}x${h} image"
815	if { $_start > 0 } {
816	set finish [clock clicks -milliseconds]
817	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
818	set _start 0
819	}
820	} elseif { $info(type) == "print" } {
821	set tag $this-print-$info(-token)
822	set _hardcopy($tag) $bytes
823	}
824	}
825
826	#
827	# ReceiveDataset --
828	#
829	itcl::body Rappture::VtkSurfaceViewer::ReceiveDataset { args } {
830	if { ![isconnected] } {
831	return
832	}
833	set option [lindex $args 0]
834	switch -- $option {
835	"scalar" {
836	set option [lindex $args 1]
837	switch -- $option {
838	"world" {
839	foreach { x y z value tag } [lrange $args 2 end] break
840	}
841	"pixel" {
842	foreach { x y value tag } [lrange $args 2 end] break
843	}
844	}
845	}
846	"vector" {
847	set option [lindex $args 1]
848	switch -- $option {
849	"world" {
850	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
851	}
852	"pixel" {
853	foreach { x y vx vy vz tag } [lrange $args 2 end] break
854	}
855	}
856	}
857	"names" {
858	foreach { name } [lindex $args 1] {
859	#puts stderr "Dataset: $name"
860	}
861	}
862	default {
863	error "unknown dataset option \"$option\" from server"
864	}
865	}
866	}
867
868	# ----------------------------------------------------------------------
869	# USAGE: Rebuild
870	#
871	# Called automatically whenever something changes that affects the
872	# data in the widget. Clears any existing data and rebuilds the
873	# widget to display new data.
874	# ----------------------------------------------------------------------
875	itcl::body Rappture::VtkSurfaceViewer::Rebuild {} {
876	set w [winfo width $itk_component(view)]
877	set h [winfo height $itk_component(view)]
878	if { $w < 2 \|\| $h < 2 } {
879	$_dispatcher event -idle !rebuild
880	return
881	}
882
883	# Turn on buffering of commands to the server. We don't want to
884	# be preempted by a server disconnect/reconnect (which automatically
885	# generates a new call to Rebuild).
886	StartBufferingCommands
887
888	if { $_reset } {
889	set _width $w
890	set _height $h
891	$_arcball resize $w $h
892	DoResize
893	#
894	# Reset the camera and other view parameters
895	#
896	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
897	$_arcball quaternion $q
898	if {$_view(ortho)} {
899	SendCmd "camera mode ortho"
900	} else {
901	SendCmd "camera mode persp"
902	}
903	DoRotate
904	PanCamera
905	set _first ""
906	InitSettings -xaxisgrid -yaxisgrid -zaxisgrid -axismode \
907	-axesvisible -axislabelsvisible
908	foreach axis { x y z } {
909	SendCmd "axis lformat $axis %g"
910	}
911	StopBufferingCommands
912	SendCmd "imgflush"
913	StartBufferingCommands
914	}
915	set _first ""
916	SendCmd "dataset visible 0"
917	foreach dataobj [get -objects] {
918	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
919	set _first $dataobj
920	}
921	set _obj2datasets($dataobj) ""
922	foreach comp [$dataobj components] {
923	set tag $dataobj-$comp
924	if { ![info exists _datasets($tag)] } {
925	set bytes [$dataobj vtkdata $comp]
926	if 0 {
927	set f [open "/tmp/surface.vtk" "w"]
928	puts $f $bytes
929	close $f
930	}
931	set length [string length $bytes]
932	if { $_reportClientInfo } {
933	set info {}
934	lappend info "tool_id" [$dataobj hints toolId]
935	lappend info "tool_name" [$dataobj hints toolName]
936	lappend info "tool_version" [$dataobj hints toolRevision]
937	lappend info "tool_title" [$dataobj hints toolTitle]
938	lappend info "dataset_label" [$dataobj hints label]
939	lappend info "dataset_size" $length
940	lappend info "dataset_tag" $tag
941	SendCmd "clientinfo [list $info]"
942	}
943	append _outbuf "dataset add $tag data follows $length\n"
944	append _outbuf $bytes
945	set _datasets($tag) 1
946	SetObjectStyle $dataobj $comp
947	}
948	lappend _obj2datasets($dataobj) $tag
949	if { [info exists _obj2ovride($dataobj-raise)] } {
950	# Setting dataset visible enables outline
951	# and contour2d
952	SendCmd "dataset visible 1 $tag"
953	}
954	}
955	}
956
957	if { $_first != "" } {
958	$itk_component(field) choices delete 0 end
959	$itk_component(fieldmenu) delete 0 end
960	array unset _fields
961	set _curFldName ""
962	foreach cname [$_first components] {
963	foreach fname [$_first fieldnames $cname] {
964	if { [info exists _fields($fname)] } {
965	continue
966	}
967	foreach { label units components } \
968	[$_first fieldinfo $fname] break
969	$itk_component(field) choices insert end "$fname" "$label"
970	$itk_component(fieldmenu) add radiobutton -label "$label" \
971	-value $label -variable [itcl::scope _curFldLabel] \
972	-selectcolor red \
973	-activebackground $itk_option(-plotbackground) \
974	-activeforeground $itk_option(-plotforeground) \
975	-font "Arial 8" \
976	-command [itcl::code $this Combo invoke]
977	set _fields($fname) [list $label $units $components]
978	if { $_curFldName == "" } {
979	set _curFldName $fname
980	set _curFldLabel $label
981	}
982	}
983	}
984	$itk_component(field) value $_curFldLabel
985	}
986	InitSettings -isolinesvisible -surfacevisible -surfaceoutline
987	if { $_reset } {
988	# These are settings that rely on a dataset being loaded.
989	InitSettings \
990	-surfacelighting \
991	-field \
992	-surfaceedges -surfacelighting -surfaceopacity \
993	-surfacewireframe \
994	-numcontours
995
996	Zoom reset
997	foreach axis { x y z } {
998	# Another problem fixed by a <view>. We looking into a data
999	# object for the name of the axes. This should be global to
1000	# the viewer itself.
1001	set label [$_first hints ${axis}label]
1002	if { $label == "" } {
1003	set label [string toupper $axis]
1004	}
1005	# May be a space in the axis label.
1006	SendCmd [list axis name $axis $label]
1007	}
1008	if { [array size _fields] < 2 } {
1009	blt::table forget $itk_component(field) $itk_component(field_l)
1010	}
1011	set _reset 0
1012	}
1013
1014	# Actually write the commands to the server socket. If it fails, we don't
1015	# care. We're finished here.
1016	blt::busy hold $itk_component(hull)
1017	StopBufferingCommands; # Turn off buffering and send commands.
1018	blt::busy release $itk_component(hull)
1019	}
1020
1021	# ----------------------------------------------------------------------
1022	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1023	#
1024	# Returns a list of server IDs for the current datasets being displayed. This
1025	# is normally a single ID, but it might be a list of IDs if the current data
1026	# object has multiple components.
1027	# ----------------------------------------------------------------------
1028	itcl::body Rappture::VtkSurfaceViewer::CurrentDatasets {args} {
1029	set flag [lindex $args 0]
1030	switch -- $flag {
1031	"-all" {
1032	if { [llength $args] > 1 } {
1033	error "CurrentDatasets: can't specify dataobj after \"-all\""
1034	}
1035	set dlist [get -objects]
1036	}
1037	"-visible" {
1038	if { [llength $args] > 1 } {
1039	set dlist {}
1040	set args [lrange $args 1 end]
1041	foreach dataobj $args {
1042	if { [info exists _obj2ovride($dataobj-raise)] } {
1043	lappend dlist $dataobj
1044	}
1045	}
1046	} else {
1047	set dlist [get -visible]
1048	}
1049	}
1050	default {
1051	set dlist $args
1052	}
1053	}
1054	set rlist ""
1055	foreach dataobj $dlist {
1056	foreach comp [$dataobj components] {
1057	set tag $dataobj-$comp
1058	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1059	lappend rlist $tag
1060	}
1061	}
1062	}
1063	return $rlist
1064	}
1065
1066	# ----------------------------------------------------------------------
1067	# USAGE: Zoom in
1068	# USAGE: Zoom out
1069	# USAGE: Zoom reset
1070	#
1071	# Called automatically when the user clicks on one of the zoom
1072	# controls for this widget. Changes the zoom for the current view.
1073	# ----------------------------------------------------------------------
1074	itcl::body Rappture::VtkSurfaceViewer::Zoom {option} {
1075	switch -- $option {
1076	"in" {
1077	set _view(zoom) [expr {$_view(zoom)*1.25}]
1078	SendCmd "camera zoom $_view(zoom)"
1079	}
1080	"out" {
1081	set _view(zoom) [expr {$_view(zoom)*0.8}]
1082	SendCmd "camera zoom $_view(zoom)"
1083	}
1084	"reset" {
1085	array set _view {
1086	qw 0.853553
1087	qx -0.353553
1088	qy 0.353553
1089	qz 0.146447
1090	zoom 1.0
1091	xpan 0
1092	ypan 0
1093	}
1094	if { $_first != "" } {
1095	set location [$_first hints camera]
1096	if { $location != "" } {
1097	array set _view $location
1098	}
1099	}
1100	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1101	$_arcball quaternion $q
1102	DoRotate
1103	SendCmd "camera reset"
1104	}
1105	}
1106	}
1107
1108	itcl::body Rappture::VtkSurfaceViewer::PanCamera {} {
1109	set x $_view(xpan)
1110	set y $_view(ypan)
1111	SendCmd "camera pan $x $y"
1112	}
1113
1114
1115	# ----------------------------------------------------------------------
1116	# USAGE: Rotate click <x> <y>
1117	# USAGE: Rotate drag <x> <y>
1118	# USAGE: Rotate release <x> <y>
1119	#
1120	# Called automatically when the user clicks/drags/releases in the
1121	# plot area. Moves the plot according to the user's actions.
1122	# ----------------------------------------------------------------------
1123	itcl::body Rappture::VtkSurfaceViewer::Rotate {option x y} {
1124	switch -- $option {
1125	"click" {
1126	$itk_component(view) configure -cursor fleur
1127	set _click(x) $x
1128	set _click(y) $y
1129	}
1130	"drag" {
1131	if {[array size _click] == 0} {
1132	Rotate click $x $y
1133	} else {
1134	set w [winfo width $itk_component(view)]
1135	set h [winfo height $itk_component(view)]
1136	if {$w <= 0 \|\| $h <= 0} {
1137	return
1138	}
1139
1140	if {[catch {
1141	# this fails sometimes for no apparent reason
1142	set dx [expr {double($x-$_click(x))/$w}]
1143	set dy [expr {double($y-$_click(y))/$h}]
1144	}]} {
1145	return
1146	}
1147	if { $dx == 0 && $dy == 0 } {
1148	return
1149	}
1150	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1151	EventuallyRotate $q
1152	set _click(x) $x
1153	set _click(y) $y
1154	}
1155	}
1156	"release" {
1157	Rotate drag $x $y
1158	$itk_component(view) configure -cursor ""
1159	catch {unset _click}
1160	}
1161	default {
1162	error "bad option \"$option\": should be click, drag, release"
1163	}
1164	}
1165	}
1166
1167	itcl::body Rappture::VtkSurfaceViewer::Pick {x y} {
1168	foreach tag [CurrentDatasets -visible] {
1169	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1170	}
1171	}
1172
1173	# ----------------------------------------------------------------------
1174	# USAGE: $this Pan click x y
1175	# $this Pan drag x y
1176	# $this Pan release x y
1177	#
1178	# Called automatically when the user clicks on one of the zoom
1179	# controls for this widget. Changes the zoom for the current view.
1180	# ----------------------------------------------------------------------
1181	itcl::body Rappture::VtkSurfaceViewer::Pan {option x y} {
1182	switch -- $option {
1183	"set" {
1184	set w [winfo width $itk_component(view)]
1185	set h [winfo height $itk_component(view)]
1186	set x [expr $x / double($w)]
1187	set y [expr $y / double($h)]
1188	set _view(xpan) [expr $_view(xpan) + $x]
1189	set _view(ypan) [expr $_view(ypan) + $y]
1190	PanCamera
1191	return
1192	}
1193	"click" {
1194	set _click(x) $x
1195	set _click(y) $y
1196	$itk_component(view) configure -cursor hand1
1197	}
1198	"drag" {
1199	if { ![info exists _click(x)] } {
1200	set _click(x) $x
1201	}
1202	if { ![info exists _click(y)] } {
1203	set _click(y) $y
1204	}
1205	set w [winfo width $itk_component(view)]
1206	set h [winfo height $itk_component(view)]
1207	set dx [expr ($_click(x) - $x)/double($w)]
1208	set dy [expr ($_click(y) - $y)/double($h)]
1209	set _click(x) $x
1210	set _click(y) $y
1211	set _view(xpan) [expr $_view(xpan) - $dx]
1212	set _view(ypan) [expr $_view(ypan) - $dy]
1213	PanCamera
1214	}
1215	"release" {
1216	Pan drag $x $y
1217	$itk_component(view) configure -cursor ""
1218	}
1219	default {
1220	error "unknown option \"$option\": should set, click, drag, or release"
1221	}
1222	}
1223	}
1224
1225	# ----------------------------------------------------------------------
1226	# USAGE: InitSettings <what> ?<value>?
1227	#
1228	# Used internally to update rendering settings whenever parameters
1229	# change in the popup settings panel. Sends the new settings off
1230	# to the back end.
1231	# ----------------------------------------------------------------------
1232	itcl::body Rappture::VtkSurfaceViewer::InitSettings { args } {
1233	foreach spec $args {
1234	if { [info exists _settings($_first-$spec)] } {
1235	# Reset global setting with dataobj specific setting
1236	set _settings($spec) $_settings($_first-$spec)
1237	}
1238	AdjustSetting $spec
1239	}
1240	}
1241
1242	#
1243	# AdjustSetting --
1244	#
1245	# Changes/updates a specific setting in the widget. There are
1246	# usually user-setable option. Commands are sent to the render
1247	# server.
1248	#
1249	itcl::body Rappture::VtkSurfaceViewer::AdjustSetting {what {value ""}} {
1250	if { ![isconnected] } {
1251	return
1252	}
1253	switch -- $what {
1254	"-background" {
1255	set bgcolor [$itk_component(background) value]
1256	array set fgcolors {
1257	"black" "white"
1258	"white" "black"
1259	"grey" "black"
1260	}
1261	configure -plotbackground $bgcolor \
1262	-plotforeground $fgcolors($bgcolor)
1263	$itk_component(view) delete "legend"
1264	DrawLegend
1265	}
1266	"-axesvisible" {
1267	set bool $_settings(-axesvisible)
1268	SendCmd "axis visible all $bool"
1269	}
1270	"-axislabelsvisible" {
1271	set bool $_settings(-axislabelsvisible)
1272	SendCmd "axis labels all $bool"
1273	}
1274	"-xaxisgrid" - "-yaxisgrid" - "-zaxisgrid" {
1275	set axis [string tolower [string range $what 1 1]]
1276	set bool $_settings($what)
1277	SendCmd "axis grid $axis $bool"
1278	}
1279	"-axismode" {
1280	set mode [$itk_component(axisMode) value]
1281	set mode [$itk_component(axisMode) translate $mode]
1282	set _settings($what) $mode
1283	SendCmd "axis flymode $mode"
1284	}
1285	"-colormap" {
1286	set _changed($what) 1
1287	StartBufferingCommands
1288	set color [$itk_component(colormap) value]
1289	set _settings($what) $color
1290	if { $color == "none" } {
1291	if { $_settings(-colormapvisible) } {
1292	SendCmd "contour2d colormode constant {}"
1293	SendCmd "polydata colormode constant {}"
1294	set _settings(-colormapvisible) 0
1295	}
1296	} else {
1297	if { !$_settings(-colormapvisible) } {
1298	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1299	SendCmd "polydata colormode $_colorMode $_curFldName"
1300	set _settings(-colormapvisible) 1
1301	}
1302	SetCurrentColormap $color
1303	if {$_settings(-colormapdiscrete)} {
1304	set numColors [expr $_settings(-numcontours) + 1]
1305	SendCmd "colormap res $numColors $color"
1306	}
1307	}
1308	StopBufferingCommands
1309	EventuallyRequestLegend
1310	}
1311	"-colormapdiscrete" {
1312	set bool $_settings($what)
1313	set numColors [expr $_settings(-numcontours) + 1]
1314	StartBufferingCommands
1315	if {$bool} {
1316	SendCmd "colormap res $numColors"
1317	# Discrete colormap requires preinterp on
1318	SendCmd "polydata preinterp on"
1319	} else {
1320	SendCmd "colormap res default"
1321	# FIXME: add setting for preinterp (default on)
1322	SendCmd "polydata preinterp on"
1323	}
1324	StopBufferingCommands
1325	EventuallyRequestLegend
1326	}
1327	"-numcontours" {
1328	set _settings($what) [$itk_component(numcontours) value]
1329	set _currentNumContours $_settings($what)
1330	UpdateContourList
1331	set _changed($what) 1
1332	SendCmd "contour2d contourlist [list $_contourList]"
1333	if {$_settings(-colormapdiscrete)} {
1334	set numColors [expr $_settings($what) + 1]
1335	SendCmd "colormap res $numColors"
1336	EventuallyRequestLegend
1337	} else {
1338	DrawLegend
1339	}
1340	}
1341	"-surfacewireframe" {
1342	set bool $_settings($what)
1343	SendCmd "polydata wireframe $bool"
1344	}
1345	"-isolinesvisible" {
1346	set bool $_settings($what)
1347	SendCmd "contour2d visible $bool"
1348	DrawLegend
1349	}
1350	"-surfacevisible" {
1351	set bool $_settings($what)
1352	SendCmd "polydata visible $bool"
1353	if { $bool } {
1354	Rappture::Tooltip::for $itk_component(surface) \
1355	"Hide the surface"
1356	} else {
1357	Rappture::Tooltip::for $itk_component(surface) \
1358	"Show the surface"
1359	}
1360	DrawLegend
1361	}
1362	"-surfacelighting" {
1363	set bool $_settings($what)
1364	SendCmd "polydata lighting $bool"
1365	}
1366	"-surfaceedges" {
1367	set bool $_settings($what)
1368	SendCmd "polydata edges $bool"
1369	}
1370	"-surfaceoutline" {
1371	set bool $_settings($what)
1372	SendCmd "outline visible $bool"
1373	}
1374	"-isolinecolor" {
1375	set color [$itk_component(isolineColor) value]
1376	set _settings($what) $color
1377	SendCmd "contour2d linecolor [Color2RGB $color]"
1378	DrawLegend
1379	}
1380	"-surfaceopacity" {
1381	set val $_settings($what)
1382	set sval [expr { 0.01 * double($val) }]
1383	SendCmd "polydata opacity $sval"
1384	}
1385	"-field" {
1386	set label [$itk_component(field) value]
1387	set fname [$itk_component(field) translate $label]
1388	set _settings($what) $fname
1389	if { [info exists _fields($fname)] } {
1390	foreach { label units components } $_fields($fname) break
1391	if { $components > 1 } {
1392	set _colorMode vmag
1393	} else {
1394	set _colorMode scalar
1395	}
1396	set _curFldName $fname
1397	set _curFldLabel $label
1398	} else {
1399	puts stderr "unknown field \"$fname\""
1400	return
1401	}
1402	SendCmd "dataset scalar $_curFldName"
1403	if { ![info exists _limits($_curFldName)] } {
1404	SendCmd "dataset maprange all"
1405	} else {
1406	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1407	}
1408	#SendCmd "contour2d colormode $_colorMode $_curFldName"
1409	SendCmd "polydata colormode $_colorMode $_curFldName"
1410	SendCmd "camera reset"
1411	UpdateContourList
1412	DrawLegend
1413	}
1414	"-legendvisible" {
1415	if { !$_settings($what) } {
1416	$itk_component(view) delete legend
1417	}
1418	DrawLegend
1419	}
1420	default {
1421	error "don't know how to fix $what"
1422	}
1423	}
1424	}
1425
1426
1427	#
1428	# RequestLegend --
1429	#
1430	# Request a new legend from the server. The size of the legend
1431	# is determined from the height of the canvas.
1432	#
1433	# This should be called when
1434	# 1. A new current colormap is set.
1435	# 2. Window is resized.
1436	# 3. The limits of the data have changed. (Just need a redraw).
1437	# 4. Number of isolines have changed. (Just need a redraw).
1438	# 5. Legend becomes visible (Just need a redraw).
1439	#
1440	itcl::body Rappture::VtkSurfaceViewer::RequestLegend {} {
1441	set _legendPending 0
1442	if { ![info exists _fields($_curFldName)] } {
1443	return
1444	}
1445	set fname $_curFldName
1446	set font "Arial 8"
1447	set lineht [font metrics $font -linespace]
1448	set w 12
1449	set h [expr {$_height - 2 * ($lineht + 2)}]
1450	if { $h < 1 } {
1451	return
1452	}
1453	if { [string match "component*" $fname] } {
1454	set title ""
1455	} else {
1456	if { [info exists _fields($fname)] } {
1457	foreach { title units } $_fields($fname) break
1458	if { $units != "" } {
1459	set title [format "%s (%s)" $title $units]
1460	}
1461	} else {
1462	set title $fname
1463	}
1464	}
1465	# If there's a title too, subtract one more line
1466	if { $title != "" } {
1467	incr h -$lineht
1468	}
1469	# Set the legend on the first heightmap dataset.
1470	if { $_currentColormap != "" } {
1471	set cmap $_currentColormap
1472	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1473	}
1474	}
1475
1476	# ----------------------------------------------------------------------
1477	# CONFIGURATION OPTION: -plotbackground
1478	# ----------------------------------------------------------------------
1479	itcl::configbody Rappture::VtkSurfaceViewer::plotbackground {
1480	if { [isconnected] } {
1481	set rgb [Color2RGB $itk_option(-plotbackground)]
1482	SendCmd "screen bgcolor $rgb"
1483	}
1484	}
1485
1486	# ----------------------------------------------------------------------
1487	# CONFIGURATION OPTION: -plotforeground
1488	# ----------------------------------------------------------------------
1489	itcl::configbody Rappture::VtkSurfaceViewer::plotforeground {
1490	if { [isconnected] } {
1491	set rgb [Color2RGB $itk_option(-plotforeground)]
1492	SendCmd "axis color all $rgb"
1493	SendCmd "outline color $rgb"
1494	}
1495	}
1496
1497	itcl::body Rappture::VtkSurfaceViewer::limits { dataobj } {
1498	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1499	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1500	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1501	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1502	return [array get limits]
1503	}
1504
1505	itcl::body Rappture::VtkSurfaceViewer::BuildSurfaceTab {} {
1506
1507	set fg [option get $itk_component(hull) font Font]
1508	#set bfg [option get $itk_component(hull) boldFont Font]
1509
1510	set inner [$itk_component(main) insert end \
1511	-title "Surface Settings" \
1512	-icon [Rappture::icon volume-on]]
1513	$inner configure -borderwidth 4
1514
1515	checkbutton $inner.surface \
1516	-text "Surface" \
1517	-variable [itcl::scope _settings(-surfacevisible)] \
1518	-command [itcl::code $this AdjustSetting -surfacevisible] \
1519	-font "Arial 9"
1520
1521	checkbutton $inner.isolines \
1522	-text "Isolines" \
1523	-variable [itcl::scope _settings(-isolinesvisible)] \
1524	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1525	-font "Arial 9"
1526
1527	checkbutton $inner.colormapDiscrete \
1528	-text "Discrete Colormap" \
1529	-variable [itcl::scope _settings(-colormapdiscrete)] \
1530	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1531	-font "Arial 9"
1532
1533	checkbutton $inner.wireframe \
1534	-text "Wireframe" \
1535	-variable [itcl::scope _settings(-surfacewireframe)] \
1536	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1537	-font "Arial 9"
1538
1539	checkbutton $inner.lighting \
1540	-text "Enable Lighting" \
1541	-variable [itcl::scope _settings(-surfacelighting)] \
1542	-command [itcl::code $this AdjustSetting -surfacelighting] \
1543	-font "Arial 9"
1544
1545	checkbutton $inner.edges \
1546	-text "Edges" \
1547	-variable [itcl::scope _settings(-surfaceedges)] \
1548	-command [itcl::code $this AdjustSetting -surfaceedges] \
1549	-font "Arial 9"
1550
1551	checkbutton $inner.outline \
1552	-text "Outline" \
1553	-variable [itcl::scope _settings(-surfaceoutline)] \
1554	-command [itcl::code $this AdjustSetting -surfaceoutline] \
1555	-font "Arial 9"
1556
1557	checkbutton $inner.legend \
1558	-text "Legend" \
1559	-variable [itcl::scope _settings(-legendvisible)] \
1560	-command [itcl::code $this AdjustSetting -legendvisible] \
1561	-font "Arial 9"
1562
1563	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1564	itk_component add isolineColor {
1565	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1566	}
1567	$inner.linecolor choices insert end \
1568	"black" "black" \
1569	"blue" "blue" \
1570	"cyan" "cyan" \
1571	"green" "green" \
1572	"grey" "grey" \
1573	"magenta" "magenta" \
1574	"orange" "orange" \
1575	"red" "red" \
1576	"white" "white" \
1577	"none" "none"
1578
1579	$itk_component(isolineColor) value "white"
1580	bind $inner.linecolor <<Value>> \
1581	[itcl::code $this AdjustSetting -isolinecolor]
1582
1583	label $inner.background_l -text "Background" -font "Arial 9"
1584	itk_component add background {
1585	Rappture::Combobox $inner.background -width 10 -editable 0
1586	}
1587	$inner.background choices insert end \
1588	"black" "black" \
1589	"white" "white" \
1590	"grey" "grey"
1591
1592	$itk_component(background) value $_settings(-background)
1593	bind $inner.background <<Value>> \
1594	[itcl::code $this AdjustSetting -background]
1595
1596	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1597	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1598	-variable [itcl::scope _settings(-surfaceopacity)] \
1599	-width 10 \
1600	-showvalue off \
1601	-command [itcl::code $this AdjustSetting -surfaceopacity]
1602
1603	itk_component add field_l {
1604	label $inner.field_l -text "Field" -font "Arial 9"
1605	} {
1606	ignore -font
1607	}
1608	itk_component add field {
1609	Rappture::Combobox $inner.field -width 10 -editable 0
1610	}
1611	bind $inner.field <<Value>> \
1612	[itcl::code $this AdjustSetting -field]
1613
1614	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1615	itk_component add colormap {
1616	Rappture::Combobox $inner.colormap -width 10 -editable 0
1617	}
1618	$inner.colormap choices insert end [GetColormapList]
1619
1620	$itk_component(colormap) value "BCGYR"
1621	bind $inner.colormap <<Value>> \
1622	[itcl::code $this AdjustSetting -colormap]
1623
1624	label $inner.numcontours_l -text "Number of Isolines" -font "Arial 9"
1625	itk_component add numcontours {
1626	Rappture::Spinint $inner.numcontours \
1627	-min 0 -max 50 -font "arial 9"
1628	}
1629	$itk_component(numcontours) value $_settings(-numcontours)
1630	bind $itk_component(numcontours) <<Value>> \
1631	[itcl::code $this AdjustSetting -numcontours]
1632
1633	blt::table $inner \
1634	0,0 $inner.field_l -anchor w -pady 2 \
1635	0,1 $inner.field -anchor w -pady 2 -fill x \
1636	1,0 $inner.colormap_l -anchor w -pady 2 \
1637	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1638	2,0 $inner.linecolor_l -anchor w -pady 2 \
1639	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1640	3,0 $inner.background_l -anchor w -pady 2 \
1641	3,1 $inner.background -anchor w -pady 2 -fill x \
1642	4,0 $inner.numcontours_l -anchor w -pady 2 \
1643	4,1 $inner.numcontours -anchor w -pady 2 \
1644	5,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1645	6,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1646	7,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1647	8,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1648	9,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1649	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1650	11,0 $inner.legend -anchor w -pady 2 \
1651	12,0 $inner.opacity_l -anchor w -pady 2 \
1652	12,1 $inner.opacity -fill x -pady 2 -fill x \
1653
1654	blt::table configure $inner r* c* -resize none
1655	blt::table configure $inner r13 c1 -resize expand
1656	}
1657
1658	itcl::body Rappture::VtkSurfaceViewer::BuildAxisTab {} {
1659
1660	set fg [option get $itk_component(hull) font Font]
1661	#set bfg [option get $itk_component(hull) boldFont Font]
1662
1663	set inner [$itk_component(main) insert end \
1664	-title "Axis Settings" \
1665	-icon [Rappture::icon axis2]]
1666	$inner configure -borderwidth 4
1667
1668	checkbutton $inner.visible \
1669	-text "Show Axes" \
1670	-variable [itcl::scope _settings(-axesvisible)] \
1671	-command [itcl::code $this AdjustSetting -axesvisible] \
1672	-font "Arial 9"
1673
1674	checkbutton $inner.labels \
1675	-text "Show Axis Labels" \
1676	-variable [itcl::scope _settings(-axislabelsvisible)] \
1677	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1678	-font "Arial 9"
1679
1680	checkbutton $inner.gridx \
1681	-text "Show X Grid" \
1682	-variable [itcl::scope _settings(-xaxisgrid)] \
1683	-command [itcl::code $this AdjustSetting -xaxisgrid] \
1684	-font "Arial 9"
1685	checkbutton $inner.gridy \
1686	-text "Show Y Grid" \
1687	-variable [itcl::scope _settings(-yaxisgrid)] \
1688	-command [itcl::code $this AdjustSetting -yaxisgrid] \
1689	-font "Arial 9"
1690	checkbutton $inner.gridz \
1691	-text "Show Z Grid" \
1692	-variable [itcl::scope _settings(-zaxisgrid)] \
1693	-command [itcl::code $this AdjustSetting -zaxisgrid] \
1694	-font "Arial 9"
1695
1696	label $inner.mode_l -text "Mode" -font "Arial 9"
1697
1698	itk_component add axisMode {
1699	Rappture::Combobox $inner.mode -width 10 -editable 0
1700	}
1701	$inner.mode choices insert end \
1702	"static_triad" "static" \
1703	"closest_triad" "closest" \
1704	"furthest_triad" "farthest" \
1705	"outer_edges" "outer"
1706	$itk_component(axisMode) value "static"
1707	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1708
1709	blt::table $inner \
1710	0,0 $inner.visible -anchor w -cspan 2 \
1711	1,0 $inner.labels -anchor w -cspan 2 \
1712	2,0 $inner.gridx -anchor w -cspan 2 \
1713	3,0 $inner.gridy -anchor w -cspan 2 \
1714	4,0 $inner.gridz -anchor w -cspan 2 \
1715	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1716	6,0 $inner.mode -fill x -cspan 2
1717
1718	blt::table configure $inner r* c* -resize none
1719	blt::table configure $inner r7 c1 -resize expand
1720	}
1721
1722
1723	itcl::body Rappture::VtkSurfaceViewer::BuildCameraTab {} {
1724	set inner [$itk_component(main) insert end \
1725	-title "Camera Settings" \
1726	-icon [Rappture::icon camera]]
1727	$inner configure -borderwidth 4
1728
1729	label $inner.view_l -text "view" -font "Arial 9"
1730	set f [frame $inner.view]
1731	foreach side { front back left right top bottom } {
1732	button $f.$side -image [Rappture::icon view$side] \
1733	-command [itcl::code $this SetOrientation $side]
1734	Rappture::Tooltip::for $f.$side "Change the view to $side"
1735	pack $f.$side -side left
1736	}
1737
1738	blt::table $inner \
1739	0,0 $inner.view_l -anchor e -pady 2 \
1740	0,1 $inner.view -anchor w -pady 2
1741
1742	set labels { qx qy qz qw xpan ypan zoom }
1743	set row 1
1744	foreach tag $labels {
1745	label $inner.${tag}label -text $tag -font "Arial 9"
1746	entry $inner.${tag} -font "Arial 9" -bg white \
1747	-textvariable [itcl::scope _view($tag)]
1748	bind $inner.${tag} <KeyPress-Return> \
1749	[itcl::code $this camera set ${tag}]
1750	blt::table $inner \
1751	$row,0 $inner.${tag}label -anchor e -pady 2 \
1752	$row,1 $inner.${tag} -anchor w -pady 2
1753	blt::table configure $inner r$row -resize none
1754	incr row
1755	}
1756	checkbutton $inner.ortho \
1757	-text "Orthographic Projection" \
1758	-variable [itcl::scope _view(ortho)] \
1759	-command [itcl::code $this camera set ortho] \
1760	-font "Arial 9"
1761	blt::table $inner \
1762	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1763	blt::table configure $inner r$row -resize none
1764	incr row
1765
1766	blt::table configure $inner c* r* -resize none
1767	blt::table configure $inner c2 -resize expand
1768	blt::table configure $inner r$row -resize expand
1769	}
1770
1771	#
1772	# camera --
1773	#
1774	itcl::body Rappture::VtkSurfaceViewer::camera {option args} {
1775	switch -- $option {
1776	"show" {
1777	puts [array get _view]
1778	}
1779	"set" {
1780	set who [lindex $args 0]
1781	set x $_view($who)
1782	set code [catch { string is double $x } result]
1783	if { $code != 0 \|\| !$result } {
1784	return
1785	}
1786	switch -- $who {
1787	"ortho" {
1788	if {$_view(ortho)} {
1789	SendCmd "camera mode ortho"
1790	} else {
1791	SendCmd "camera mode persp"
1792	}
1793	}
1794	"xpan" - "ypan" {
1795	PanCamera
1796	}
1797	"qx" - "qy" - "qz" - "qw" {
1798	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1799	$_arcball quaternion $q
1800	EventuallyRotate $q
1801	}
1802	"zoom" {
1803	SendCmd "camera zoom $_view(zoom)"
1804	}
1805	}
1806	}
1807	}
1808	}
1809
1810	itcl::body Rappture::VtkSurfaceViewer::GetVtkData { args } {
1811	set bytes ""
1812	foreach dataobj [get] {
1813	foreach cname [$dataobj components] {
1814	set tag $dataobj-$cname
1815	set contents [$dataobj vtkdata $cname]
1816	append bytes "$contents\n"
1817	}
1818	}
1819	return [list .vtk $bytes]
1820	}
1821
1822	itcl::body Rappture::VtkSurfaceViewer::GetImage { args } {
1823	if { [image width $_image(download)] > 0 &&
1824	[image height $_image(download)] > 0 } {
1825	set bytes [$_image(download) data -format "jpeg -quality 100"]
1826	set bytes [Rappture::encoding::decode -as b64 $bytes]
1827	return [list .jpg $bytes]
1828	}
1829	return ""
1830	}
1831
1832	itcl::body Rappture::VtkSurfaceViewer::BuildDownloadPopup { popup command } {
1833	Rappture::Balloon $popup \
1834	-title "[Rappture::filexfer::label downloadWord] as..."
1835	set inner [$popup component inner]
1836	label $inner.summary -text "" -anchor w
1837	radiobutton $inner.vtk_button -text "VTK data file" \
1838	-variable [itcl::scope _downloadPopup(format)] \
1839	-font "Arial 9 " \
1840	-value vtk
1841	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1842	radiobutton $inner.image_button -text "Image File" \
1843	-variable [itcl::scope _downloadPopup(format)] \
1844	-font "Arial 9 " \
1845	-value image
1846	Rappture::Tooltip::for $inner.image_button \
1847	"Save as digital image."
1848
1849	button $inner.ok -text "Save" \
1850	-highlightthickness 0 -pady 2 -padx 3 \
1851	-command $command \
1852	-compound left \
1853	-image [Rappture::icon download]
1854
1855	button $inner.cancel -text "Cancel" \
1856	-highlightthickness 0 -pady 2 -padx 3 \
1857	-command [list $popup deactivate] \
1858	-compound left \
1859	-image [Rappture::icon cancel]
1860
1861	blt::table $inner \
1862	0,0 $inner.summary -cspan 2 \
1863	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1864	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1865	4,1 $inner.cancel -width .9i -fill y \
1866	4,0 $inner.ok -padx 2 -width .9i -fill y
1867	blt::table configure $inner r3 -height 4
1868	blt::table configure $inner r4 -pady 4
1869	raise $inner.image_button
1870	$inner.vtk_button invoke
1871	return $inner
1872	}
1873
1874	itcl::body Rappture::VtkSurfaceViewer::SetObjectStyle { dataobj comp } {
1875	# Parse style string.
1876	set tag $dataobj-$comp
1877	array set style {
1878	-color BCGYR
1879	-edgecolor black
1880	-edges 0
1881	-isolinecolor white
1882	-isolinesvisible 0
1883	-levels 10
1884	-lighting 1
1885	-linewidth 1.0
1886	-opacity 1.0
1887	-outline 0
1888	-surfacevisible 1
1889	-wireframe 0
1890	}
1891	array set style [$dataobj style $comp]
1892	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
1893	set style(-opacity) 1
1894	}
1895
1896	# This is too complicated. We want to set the colormap, number of
1897	# isolines and opacity for the dataset. They can be the default values,
1898	# the style hints loaded with the dataset, or set by user controls. As
1899	# datasets get loaded, they first use the defaults that are overidden
1900	# by the style hints. If the user changes the global controls, then that
1901	# overrides everything else. I don't know what it means when global
1902	# controls are specified as style hints by each dataset. It complicates
1903	# the code to handle aberrant cases.
1904
1905	if { $_changed(-surfaceopacity) } {
1906	set style(-opacity) [expr $_settings(-surfaceopacity) * 0.01]
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	set _settings(-isolinesvisible) $style(-isolinesvisible)
1926	set _settings(-surfacevisible) $style(-surfacevisible)
1927
1928	SendCmd "polydata add $tag"
1929	SendCmd "polydata edges $style(-edges) $tag"
1930	SendCmd [list contour2d add contourlist $_contourList $tag]
1931	SendCmd "contour2d colormode constant {} $tag"
1932	SendCmd "contour2d color [Color2RGB $style(-isolinecolor)] $tag"
1933	SendCmd "outline add $tag"
1934	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
1935	SendCmd "outline visible $style(-outline) $tag"
1936	set _settings(-surfaceoutline) $style(-outline)
1937	set _settings(-surfaceedges) $style(-edges)
1938	#SendCmd "polydata color [Color2RGB $settings(-color)] $tag"
1939	SendCmd "polydata lighting $style(-lighting) $tag"
1940	set _settings(-surfacelighting) $style(-lighting)
1941	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1942	SendCmd "polydata linewidth $style(-linewidth) $tag"
1943	SendCmd "polydata opacity $style(-opacity) $tag"
1944	set _settings(-surfaceopacity) [expr $style(-opacity) * 100.0]
1945	SetCurrentColormap $style(-color)
1946	SendCmd "polydata wireframe $style(-wireframe) $tag"
1947	set _settings(-surfacewireframe) $style(-wireframe)
1948	}
1949
1950	itcl::body Rappture::VtkSurfaceViewer::IsValidObject { dataobj } {
1951	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
1952	return 0
1953	}
1954	return 1
1955	}
1956
1957	#
1958	# EnterLegend --
1959	#
1960	itcl::body Rappture::VtkSurfaceViewer::EnterLegend { x y } {
1961	SetLegendTip $x $y
1962	}
1963
1964	#
1965	# MotionLegend --
1966	#
1967	itcl::body Rappture::VtkSurfaceViewer::MotionLegend { x y } {
1968	Rappture::Tooltip::tooltip cancel
1969	set c $itk_component(view)
1970	set cw [winfo width $c]
1971	set ch [winfo height $c]
1972	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
1973	SetLegendTip $x $y
1974	}
1975	}
1976
1977	#
1978	# LeaveLegend --
1979	#
1980	itcl::body Rappture::VtkSurfaceViewer::LeaveLegend { } {
1981	Rappture::Tooltip::tooltip cancel
1982	.rappturetooltip configure -icon ""
1983	}
1984
1985	#
1986	# SetLegendTip --
1987	#
1988	itcl::body Rappture::VtkSurfaceViewer::SetLegendTip { x y } {
1989	set fname $_curFldName
1990	set c $itk_component(view)
1991	set w [winfo width $c]
1992	set h [winfo height $c]
1993
1994	set font "Arial 8"
1995	set lineht [font metrics $font -linespace]
1996
1997	set ih [image height $_image(legend)]
1998	set iy [expr $y - ($lineht + 2)]
1999
2000	if { [string match "component*" $fname] } {
2001	set title ""
2002	} else {
2003	if { [info exists _fields($fname)] } {
2004	foreach { title units } $_fields($fname) break
2005	if { $units != "" } {
2006	set title [format "%s (%s)" $title $units]
2007	}
2008	} else {
2009	set title $fname
2010	}
2011	}
2012	# If there's a legend title, increase the offset by the line height.
2013	if { $title != "" } {
2014	incr iy -$lineht
2015	}
2016	# Make a swatch of the selected color
2017	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2018	return
2019	}
2020	if { ![info exists _image(swatch)] } {
2021	set _image(swatch) [image create photo -width 24 -height 24]
2022	}
2023	set color [eval format "\#%02x%02x%02x" $pixel]
2024	$_image(swatch) put black -to 0 0 23 23
2025	$_image(swatch) put $color -to 1 1 22 22
2026	.rappturetooltip configure -icon $_image(swatch)
2027
2028	# Compute the value of the point
2029	if { [info exists _limits($_curFldName)] } {
2030	foreach { vmin vmax } $_limits($_curFldName) break
2031	set t [expr 1.0 - (double($iy) / double($ih-1))]
2032	set value [expr $t * ($vmax - $vmin) + $vmin]
2033	} else {
2034	set value 0.0
2035	}
2036	set tx [expr $x + 15]
2037	set ty [expr $y - 5]
2038	if { [info exists _isolines($y)] } {
2039	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2040	} else {
2041	Rappture::Tooltip::text $c [format "$title %g" $value]
2042	}
2043	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2044	}
2045
2046	#
2047	# ReceiveLegend --
2048	#
2049	# Invoked automatically whenever the "legend" command comes in from
2050	# the rendering server. Indicates that binary image data with the
2051	# specified <size> will follow.
2052	#
2053	itcl::body Rappture::VtkSurfaceViewer::ReceiveLegend { colormap title min max size } {
2054	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2055	set _title $title
2056	regsub {\(mag\)} $title "" _title
2057	if { [IsConnected] } {
2058	set bytes [ReceiveBytes $size]
2059	if { ![info exists _image(legend)] } {
2060	set _image(legend) [image create photo]
2061	}
2062	$_image(legend) configure -data $bytes
2063	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2064	if { [catch {DrawLegend} errs] != 0 } {
2065	global errorInfo
2066	puts stderr "errs=$errs errorInfo=$errorInfo"
2067	}
2068	}
2069	}
2070
2071	#
2072	# DrawLegend --
2073	#
2074	# Draws the legend in the own canvas on the right side of the plot area.
2075	#
2076	itcl::body Rappture::VtkSurfaceViewer::DrawLegend {} {
2077	set fname $_curFldName
2078	set c $itk_component(view)
2079	set w [winfo width $c]
2080	set h [winfo height $c]
2081	set font "Arial 8"
2082	set lineht [font metrics $font -linespace]
2083
2084	if { [string match "component*" $fname] } {
2085	set title ""
2086	} else {
2087	if { [info exists _fields($fname)] } {
2088	foreach { title units } $_fields($fname) break
2089	if { $units != "" } {
2090	set title [format "%s (%s)" $title $units]
2091	}
2092	} else {
2093	set title $fname
2094	}
2095	}
2096	set x [expr $w - 2]
2097	if { !$_settings(-legendvisible) } {
2098	$c delete legend
2099	return
2100	}
2101	if { [$c find withtag "legend"] == "" } {
2102	set y 2
2103	# If there's a legend title, create a text item for the title.
2104	$c create text $x $y \
2105	-anchor ne \
2106	-fill $itk_option(-plotforeground) -tags "title legend" \
2107	-font $font
2108	if { $title != "" } {
2109	incr y $lineht
2110	}
2111	$c create text $x $y \
2112	-anchor ne \
2113	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2114	-font $font
2115	incr y $lineht
2116	$c create image $x $y \
2117	-anchor ne \
2118	-image $_image(legend) -tags "colormap legend"
2119	$c create rectangle $x $y 1 1 \
2120	-fill "" -outline "" -tags "sensor legend"
2121	$c create text $x [expr {$h-2}] \
2122	-anchor se \
2123	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2124	-font $font
2125	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2126	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2127	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2128	}
2129	$c delete isoline
2130	set x2 $x
2131	set iw [image width $_image(legend)]
2132	set ih [image height $_image(legend)]
2133	set x1 [expr $x2 - ($iw*12)/10]
2134	set color $_settings(-isolinecolor)
2135	# Draw the isolines on the legend.
2136	array unset _isolines
2137	if { $color != "none" && [info exists _limits($_curFldName)] &&
2138	$_settings(-isolinesvisible) && $_settings(-numcontours) > 0 } {
2139
2140	foreach { vmin vmax } $_limits($_curFldName) break
2141	set range [expr double($vmax - $vmin)]
2142	if { $range <= 0.0 } {
2143	set range 1.0; # Min is greater or equal to max.
2144	}
2145	set tags "isoline legend"
2146	set offset [expr 2 + $lineht]
2147	if { $title != "" } {
2148	incr offset $lineht
2149	}
2150	foreach value $_contourList {
2151	set norm [expr 1.0 - (($value - $vmin) / $range)]
2152	set y1 [expr int(round(($norm * $ih) + $offset))]
2153	for { set off 0 } { $off < 3 } { incr off } {
2154	set _isolines([expr $y1 + $off]) $value
2155	set _isolines([expr $y1 - $off]) $value
2156	}
2157	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2158	}
2159	}
2160
2161	$c bind title <ButtonPress> [itcl::code $this Combo post]
2162	$c bind title <Enter> [itcl::code $this Combo activate]
2163	$c bind title <Leave> [itcl::code $this Combo deactivate]
2164	# Reset the item coordinates according the current size of the plot.
2165	$c itemconfigure title -text $title
2166	if { [info exists _limits($_curFldName)] } {
2167	foreach { vmin vmax } $_limits($_curFldName) break
2168	$c itemconfigure vmin -text [format %g $vmin]
2169	$c itemconfigure vmax -text [format %g $vmax]
2170	}
2171	set y 2
2172	# If there's a legend title, move the title to the correct position
2173	if { $title != "" } {
2174	$c itemconfigure title -text $title
2175	$c coords title $x $y
2176	incr y $lineht
2177	$c raise title
2178	}
2179	$c coords vmax $x $y
2180	incr y $lineht
2181	$c coords colormap $x $y
2182	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2183	$c raise sensor
2184	$c coords vmin $x [expr {$h - 2}]
2185	}
2186
2187	# ----------------------------------------------------------------------
2188	# USAGE: _dropdown post
2189	# USAGE: _dropdown unpost
2190	# USAGE: _dropdown select
2191	#
2192	# Used internally to handle the dropdown list for this combobox. The
2193	# post/unpost options are invoked when the list is posted or unposted
2194	# to manage the relief of the controlling button. The select option
2195	# is invoked whenever there is a selection from the list, to assign
2196	# the value back to the gauge.
2197	# ----------------------------------------------------------------------
2198	itcl::body Rappture::VtkSurfaceViewer::Combo {option} {
2199	set c $itk_component(view)
2200	switch -- $option {
2201	post {
2202	foreach { x1 y1 x2 y2 } [$c bbox title] break
2203	set cw [winfo width $itk_component(view)]
2204	set mw [winfo reqwidth $itk_component(fieldmenu)]
2205	set x1 [expr $cw - $mw]
2206	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2207	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2208	tk_popup $itk_component(fieldmenu) $x $y
2209	}
2210	activate {
2211	$c itemconfigure title -fill red
2212	}
2213	deactivate {
2214	$c itemconfigure title -fill $itk_option(-plotforeground)
2215	}
2216	invoke {
2217	$itk_component(field) value $_curFldLabel
2218	AdjustSetting -field
2219	}
2220	default {
2221	error "bad option \"$option\": should be post, unpost, select"
2222	}
2223	}
2224	}
2225
2226	#
2227	# SetCurrentColormap --
2228	#
2229	itcl::body Rappture::VtkSurfaceViewer::SetCurrentColormap { name } {
2230	# Keep track of the colormaps that we build.
2231	if { ![info exists _colormaps($name)] } {
2232	BuildColormap $name
2233	set _colormaps($name) 1
2234	}
2235	set _currentColormap $name
2236	SendCmd "contour2d colormap $_currentColormap"
2237	SendCmd "polydata colormap $_currentColormap"
2238	}
2239
2240	#
2241	# BuildColormap --
2242	#
2243	# Build the designated colormap on the server.
2244	#
2245	itcl::body Rappture::VtkSurfaceViewer::BuildColormap { name } {
2246	set cmap [ColorsToColormap $name]
2247	if { [llength $cmap] == 0 } {
2248	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2249	}
2250	set wmap "0.0 1.0 1.0 1.0"
2251	SendCmd "colormap add $name { $cmap } { $wmap }"
2252	}
2253
2254	itcl::body Rappture::VtkSurfaceViewer::SetOrientation { side } {
2255	array set positions {
2256	front "1 0 0 0"
2257	back "0 0 1 0"
2258	left "0.707107 0 -0.707107 0"
2259	right "0.707107 0 0.707107 0"
2260	top "0.707107 -0.707107 0 0"
2261	bottom "0.707107 0.707107 0 0"
2262	}
2263	foreach name { qw qx qy qz } value $positions($side) {
2264	set _view($name) $value
2265	}
2266	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2267	$_arcball quaternion $q
2268	SendCmd "camera orient $q"
2269	SendCmd "camera reset"
2270	set _view(xpan) 0
2271	set _view(ypan) 0
2272	set _view(zoom) 1.0
2273	}
2274
2275	itcl::body Rappture::VtkSurfaceViewer::UpdateContourList {} {
2276	if { ![info exists _limits($_curFldName)] } {
2277	return
2278	}
2279	if { $_currentNumContours < 1 } {
2280	set _contourList ""
2281	return
2282	}
2283	foreach { vmin vmax } $_limits($_curFldName) break
2284	set v [blt::vector create \#auto]
2285	$v seq $vmin $vmax [expr $_currentNumContours+2]
2286	$v delete end 0
2287	set _contourList [$v range 0 end]
2288	blt::vector destroy $v
2289	}
2290

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