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vtksurfaceviewer.tcl

Last change on this file was 6461, checked in by ldelgass, 8 years ago
Add point size style option to mesh/surface viewers, some fixes for constant color option.
File size: 79.5 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtksurfaceviewer - Vtk 3D boundary surface viewer
4	#
5	# It connects to the Vtkvis server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2016 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkSurfaceViewer.width 4i widgetDefault
19	option add VtkSurfaceViewercursor crosshair widgetDefault
20	option add *VtkSurfaceViewer.height 4i widgetDefault
21	option add *VtkSurfaceViewer.foreground black widgetDefault
22	option add *VtkSurfaceViewer.controlBackground gray widgetDefault
23	option add *VtkSurfaceViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkSurfaceViewer.plotBackground black widgetDefault
25	option add *VtkSurfaceViewer.plotForeground white widgetDefault
26	option add *VtkSurfaceViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkSurfaceViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkSurfaceViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkSurfaceViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { args } {
42	Rappture::VisViewer::constructor
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63
64	# The following methods are only used by this class.
65	private method AdjustSetting {what {value ""}}
66	private method BuildAxisTab {}
67	private method BuildCameraTab {}
68	private method BuildColormap { name }
69	private method BuildDownloadPopup { widget command }
70	private method BuildSurfaceTab {}
71	private method 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 _fields
142	private variable _curFldName ""
143	private variable _curFldLabel ""
144	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
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	set changed 1
512	}
513	# If anything changed, then rebuild the plot
514	if { $changed } {
515	$_dispatcher event -idle !rebuild
516	}
517	}
518
519	# ----------------------------------------------------------------------
520	# USAGE: get ?-objects?
521	# USAGE: get ?-visible?
522	# USAGE: get ?-image view?
523	#
524	# Clients use this to query the list of objects being plotted, in
525	# order from bottom to top of this result. The optional "-image"
526	# flag can also request the internal images being shown.
527	# ----------------------------------------------------------------------
528	itcl::body Rappture::VtkSurfaceViewer::get {args} {
529	if {[llength $args] == 0} {
530	set args "-objects"
531	}
532
533	set op [lindex $args 0]
534	switch -- $op {
535	"-objects" {
536	# put the dataobj list in order according to -raise options
537	set dlist {}
538	foreach dataobj $_dlist {
539	if { ![IsValidObject $dataobj] } {
540	continue
541	}
542	if {[info exists _obj2ovride($dataobj-raise)] &&
543	$_obj2ovride($dataobj-raise)} {
544	set dlist [linsert $dlist 0 $dataobj]
545	} else {
546	lappend dlist $dataobj
547	}
548	}
549	return $dlist
550	}
551	"-visible" {
552	set dlist {}
553	foreach dataobj $_dlist {
554	if { ![IsValidObject $dataobj] } {
555	continue
556	}
557	if { ![info exists _obj2ovride($dataobj-raise)] } {
558	# No setting indicates that the object isn't visible.
559	continue
560	}
561	# Otherwise use the -raise parameter to put the object to
562	# the front of the list.
563	if { $_obj2ovride($dataobj-raise) } {
564	set dlist [linsert $dlist 0 $dataobj]
565	} else {
566	lappend dlist $dataobj
567	}
568	}
569	return $dlist
570	}
571	"-image" {
572	if {[llength $args] != 2} {
573	error "wrong # args: should be \"get -image view\""
574	}
575	switch -- [lindex $args end] {
576	view {
577	return $_image(plot)
578	}
579	default {
580	error "bad image name \"[lindex $args end]\": should be view"
581	}
582	}
583	}
584	default {
585	error "bad option \"$op\": should be -objects, -visible or -image"
586	}
587	}
588	}
589
590	# ----------------------------------------------------------------------
591	# USAGE: scale ?<data1> <data2> ...?
592	#
593	# Sets the default limits for the overall plot according to the
594	# limits of the data for all of the given <data> objects. This
595	# accounts for all objects--even those not showing on the screen.
596	# Because of this, the limits are appropriate for all objects as
597	# the user scans through data in the ResultSet viewer.
598	# ----------------------------------------------------------------------
599	itcl::body Rappture::VtkSurfaceViewer::scale { args } {
600	foreach dataobj $args {
601	if { ![$dataobj isvalid] } {
602	continue; # Object doesn't contain valid data.
603	}
604	foreach axis { x y z } {
605	set lim [$dataobj limits $axis]
606	if { ![info exists _limits($axis)] } {
607	set _limits($axis) $lim
608	continue
609	}
610	foreach {min max} $lim break
611	foreach {amin amax} $_limits($axis) break
612	if { $amin > $min } {
613	set amin $min
614	}
615	if { $amax < $max } {
616	set amax $max
617	}
618	set _limits($axis) [list $amin $amax]
619	}
620	foreach { fname lim } [$dataobj fieldlimits] {
621	if { ![info exists _limits($fname)] } {
622	set _limits($fname) $lim
623	continue
624	}
625	foreach {min max} $lim break
626	foreach {fmin fmax} $_limits($fname) break
627	if { $fmin > $min } {
628	set fmin $min
629	}
630	if { $fmax < $max } {
631	set fmax $max
632	}
633	set _limits($fname) [list $fmin $fmax]
634	}
635	}
636	}
637
638	# ----------------------------------------------------------------------
639	# USAGE: download coming
640	# USAGE: download controls <downloadCommand>
641	# USAGE: download now
642	#
643	# Clients use this method to create a downloadable representation
644	# of the plot. Returns a list of the form {ext string}, where
645	# "ext" is the file extension (indicating the type of data) and
646	# "string" is the data itself.
647	# ----------------------------------------------------------------------
648	itcl::body Rappture::VtkSurfaceViewer::download {option args} {
649	switch $option {
650	coming {
651	if {[catch {
652	blt::winop snap $itk_component(plotarea) $_image(download)
653	}]} {
654	$_image(download) configure -width 1 -height 1
655	$_image(download) put #000000
656	}
657	}
658	controls {
659	set popup .vtkviewerdownload
660	if { ![winfo exists .vtkviewerdownload] } {
661	set inner [BuildDownloadPopup $popup [lindex $args 0]]
662	} else {
663	set inner [$popup component inner]
664	}
665	set _downloadPopup(image_controls) $inner.image_frame
666	set num [llength [get]]
667	set num [expr {($num == 1) ? "1 result" : "$num results"}]
668	set word [Rappture::filexfer::label downloadWord]
669	$inner.summary configure -text "$word $num in the following format:"
670	update idletasks ;# Fix initial sizes
671	return $popup
672	}
673	now {
674	set popup .vtkviewerdownload
675	if {[winfo exists .vtkviewerdownload]} {
676	$popup deactivate
677	}
678	switch -- $_downloadPopup(format) {
679	"image" {
680	return [$this GetImage [lindex $args 0]]
681	}
682	"vtk" {
683	return [$this GetVtkData [lindex $args 0]]
684	}
685	}
686	return ""
687	}
688	default {
689	error "bad option \"$option\": should be coming, controls, now"
690	}
691	}
692	}
693
694	# ----------------------------------------------------------------------
695	# USAGE: Connect ?<host:port>,<host:port>...?
696	#
697	# Clients use this method to establish a connection to a new
698	# server, or to reestablish a connection to the previous server.
699	# Any existing connection is automatically closed.
700	# ----------------------------------------------------------------------
701	itcl::body Rappture::VtkSurfaceViewer::Connect {} {
702	set _hosts [GetServerList "vtkvis"]
703	if { "" == $_hosts } {
704	return 0
705	}
706	set _reset 1
707	set result [VisViewer::Connect $_hosts]
708	if { $result } {
709	if { $_reportClientInfo } {
710	# Tell the server the viewer, hub, user and session.
711	# Do this immediately on connect before buffering any commands
712	global env
713
714	set info {}
715	set user "???"
716	if { [info exists env(USER)] } {
717	set user $env(USER)
718	}
719	set session "???"
720	if { [info exists env(SESSION)] } {
721	set session $env(SESSION)
722	}
723	lappend info "version" "$Rappture::version"
724	lappend info "build" "$Rappture::build"
725	lappend info "svnurl" "$Rappture::svnurl"
726	lappend info "installdir" "$Rappture::installdir"
727	lappend info "hub" [exec hostname]
728	lappend info "client" "vtksurfaceviewer"
729	lappend info "user" $user
730	lappend info "session" $session
731	SendCmd "clientinfo [list $info]"
732	}
733
734	set w [winfo width $itk_component(view)]
735	set h [winfo height $itk_component(view)]
736	EventuallyResize $w $h
737	}
738	return $result
739	}
740
741	#
742	# isconnected --
743	#
744	# Indicates if we are currently connected to the visualization server.
745	#
746	itcl::body Rappture::VtkSurfaceViewer::isconnected {} {
747	return [VisViewer::IsConnected]
748	}
749
750	#
751	# disconnect --
752	#
753	itcl::body Rappture::VtkSurfaceViewer::disconnect {} {
754	Disconnect
755	set _reset 1
756	}
757
758	#
759	# Disconnect --
760	#
761	# Clients use this method to disconnect from the current rendering server.
762	#
763	itcl::body Rappture::VtkSurfaceViewer::Disconnect {} {
764	VisViewer::Disconnect
765
766	$_dispatcher cancel !rebuild
767	$_dispatcher cancel !resize
768	$_dispatcher cancel !rotate
769	$_dispatcher cancel !legend
770	# disconnected -- no more data sitting on server
771	array unset _datasets
772	array unset _colormaps
773	}
774
775	# ----------------------------------------------------------------------
776	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
777	#
778	# Invoked automatically whenever the "image" command comes in from
779	# the rendering server. Indicates that binary image data with the
780	# specified <size> will follow.
781	# ----------------------------------------------------------------------
782	itcl::body Rappture::VtkSurfaceViewer::ReceiveImage { args } {
783	array set info {
784	-token "???"
785	-bytes 0
786	-type image
787	}
788	array set info $args
789	set bytes [ReceiveBytes $info(-bytes)]
790	if { $info(-type) == "image" } {
791	if 0 {
792	set f [open "last.ppm" "w"]
793	fconfigure $f -encoding binary
794	puts -nonewline $f $bytes
795	close $f
796	}
797	$_image(plot) configure -data $bytes
798	#set time [clock seconds]
799	#set date [clock format $time]
800	#set w [image width $_image(plot)]
801	#set h [image height $_image(plot)]
802	#puts stderr "$date: received image ${w}x${h} image"
803	if { $_start > 0 } {
804	set finish [clock clicks -milliseconds]
805	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
806	set _start 0
807	}
808	} elseif { $info(type) == "print" } {
809	set tag $this-print-$info(-token)
810	set _hardcopy($tag) $bytes
811	}
812	}
813
814	#
815	# ReceiveDataset --
816	#
817	itcl::body Rappture::VtkSurfaceViewer::ReceiveDataset { args } {
818	if { ![isconnected] } {
819	return
820	}
821	set option [lindex $args 0]
822	switch -- $option {
823	"scalar" {
824	set option [lindex $args 1]
825	switch -- $option {
826	"world" {
827	foreach { x y z value tag } [lrange $args 2 end] break
828	}
829	"pixel" {
830	foreach { x y value tag } [lrange $args 2 end] break
831	}
832	}
833	}
834	"vector" {
835	set option [lindex $args 1]
836	switch -- $option {
837	"world" {
838	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
839	}
840	"pixel" {
841	foreach { x y vx vy vz tag } [lrange $args 2 end] break
842	}
843	}
844	}
845	"names" {
846	foreach { name } [lindex $args 1] {
847	#puts stderr "Dataset: $name"
848	}
849	}
850	default {
851	error "unknown dataset option \"$option\" from server"
852	}
853	}
854	}
855
856	# ----------------------------------------------------------------------
857	# USAGE: Rebuild
858	#
859	# Called automatically whenever something changes that affects the
860	# data in the widget. Clears any existing data and rebuilds the
861	# widget to display new data.
862	# ----------------------------------------------------------------------
863	itcl::body Rappture::VtkSurfaceViewer::Rebuild {} {
864	set w [winfo width $itk_component(view)]
865	set h [winfo height $itk_component(view)]
866	if { $w < 2 \|\| $h < 2 } {
867	update
868	$_dispatcher event -idle !rebuild
869	return
870	}
871
872	# Turn on buffering of commands to the server. We don't want to
873	# be preempted by a server disconnect/reconnect (which automatically
874	# generates a new call to Rebuild).
875	StartBufferingCommands
876
877	if { $_reset } {
878	set _width $w
879	set _height $h
880	$_arcball resize $w $h
881	DoResize
882	# Reset the camera and other view parameters
883	$_arcball quaternion [ViewToQuaternion]
884	if {$_view(-ortho)} {
885	SendCmd "camera mode ortho"
886	} else {
887	SendCmd "camera mode persp"
888	}
889	DoRotate
890	PanCamera
891	set _first ""
892	InitSettings -background \
893	-xgrid -ygrid -zgrid -axismode \
894	-axesvisible -axislabels -axisminorticks
895	#SendCmd "axis lformat all %g"
896	StopBufferingCommands
897	SendCmd "imgflush"
898	StartBufferingCommands
899	}
900	set _first ""
901	SendCmd "dataset visible 0"
902	eval scale $_dlist
903	foreach dataobj [get -objects] {
904	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
905	set _first $dataobj
906	SetCurrentFieldName $dataobj
907	}
908	foreach comp [$dataobj components] {
909	set tag $dataobj-$comp
910	if { ![info exists _datasets($tag)] } {
911	set bytes [$dataobj vtkdata $comp]
912	if 0 {
913	set f [open "/tmp/surface.vtk" "w"]
914	fconfigure $f -translation binary -encoding binary
915	puts -nonewline $f $bytes
916	close $f
917	}
918	set length [string length $bytes]
919	if { $_reportClientInfo } {
920	set info {}
921	lappend info "tool_id" [$dataobj hints toolid]
922	lappend info "tool_name" [$dataobj hints toolname]
923	lappend info "tool_title" [$dataobj hints tooltitle]
924	lappend info "tool_command" [$dataobj hints toolcommand]
925	lappend info "tool_revision" [$dataobj hints toolrevision]
926	lappend info "dataset_label" [$dataobj hints label]
927	lappend info "dataset_size" $length
928	lappend info "dataset_tag" $tag
929	SendCmd "clientinfo [list $info]"
930	}
931	SendCmd "dataset add $tag data follows $length"
932	SendData $bytes
933	set _datasets($tag) 1
934	SetObjectStyle $dataobj $comp
935	}
936	if { [info exists _obj2ovride($dataobj-raise)] } {
937	SendCmd "polydata visible 1 $tag"
938	}
939	}
940	}
941
942	InitSettings -isolinesvisible -surfacevisible -outline
943	if { $_reset } {
944	# These are settings that rely on a dataset being loaded.
945	InitSettings \
946	-surfacelighting \
947	-field \
948	-surfaceedges -surfacelighting -surfaceopacity \
949	-surfacewireframe \
950	-numcontours
951
952	Zoom reset
953	foreach axis { x y z } {
954	set label ""
955	if { $_first != "" } {
956	set label [$_first hints ${axis}label]
957	}
958	if { $label == "" } {
959	set label [string toupper $axis]
960	}
961	# There may be a space in the axis label.
962	SendCmd [list axis name $axis $label]
963	}
964	if { [array size _fields] < 2 } {
965	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
966	}
967	set _reset 0
968	}
969	# Redraw the legend even if we're using the same colormap. The position
970	# of the isolines may have changed because the range of data changed.
971	DrawLegend
972
973	# Actually write the commands to the server socket. If it fails, we don't
974	# care. We're finished here.
975	blt::busy hold $itk_component(hull)
976	StopBufferingCommands; # Turn off buffering and send commands.
977	blt::busy release $itk_component(hull)
978	}
979
980	# ----------------------------------------------------------------------
981	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
982	#
983	# Returns a list of server IDs for the current datasets being displayed. This
984	# is normally a single ID, but it might be a list of IDs if the current data
985	# object has multiple components.
986	# ----------------------------------------------------------------------
987	itcl::body Rappture::VtkSurfaceViewer::CurrentDatasets {args} {
988	set flag [lindex $args 0]
989	switch -- $flag {
990	"-all" {
991	if { [llength $args] > 1 } {
992	error "CurrentDatasets: can't specify dataobj after \"-all\""
993	}
994	set dlist [get -objects]
995	}
996	"-visible" {
997	if { [llength $args] > 1 } {
998	set dlist {}
999	set args [lrange $args 1 end]
1000	foreach dataobj $args {
1001	if { [info exists _obj2ovride($dataobj-raise)] } {
1002	lappend dlist $dataobj
1003	}
1004	}
1005	} else {
1006	set dlist [get -visible]
1007	}
1008	}
1009	default {
1010	set dlist $args
1011	}
1012	}
1013	set rlist ""
1014	foreach dataobj $dlist {
1015	foreach comp [$dataobj components] {
1016	set tag $dataobj-$comp
1017	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1018	lappend rlist $tag
1019	}
1020	}
1021	}
1022	return $rlist
1023	}
1024
1025	# ----------------------------------------------------------------------
1026	# USAGE: Zoom in
1027	# USAGE: Zoom out
1028	# USAGE: Zoom reset
1029	#
1030	# Called automatically when the user clicks on one of the zoom
1031	# controls for this widget. Changes the zoom for the current view.
1032	# ----------------------------------------------------------------------
1033	itcl::body Rappture::VtkSurfaceViewer::Zoom {option} {
1034	switch -- $option {
1035	"in" {
1036	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1037	SendCmd "camera zoom $_view(-zoom)"
1038	}
1039	"out" {
1040	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1041	SendCmd "camera zoom $_view(-zoom)"
1042	}
1043	"reset" {
1044	array set _view {
1045	-qw 0.853553
1046	-qx -0.353553
1047	-qy 0.353553
1048	-qz 0.146447
1049	-xpan 0
1050	-ypan 0
1051	-zoom 1.0
1052	}
1053	if { $_first != "" } {
1054	set location [$_first hints camera]
1055	if { $location != "" } {
1056	array set _view $location
1057	}
1058	}
1059	$_arcball quaternion [ViewToQuaternion]
1060	DoRotate
1061	SendCmd "camera reset"
1062	}
1063	}
1064	}
1065
1066	itcl::body Rappture::VtkSurfaceViewer::PanCamera {} {
1067	set x $_view(-xpan)
1068	set y $_view(-ypan)
1069	SendCmd "camera pan $x $y"
1070	}
1071
1072	# ----------------------------------------------------------------------
1073	# USAGE: Rotate click <x> <y>
1074	# USAGE: Rotate drag <x> <y>
1075	# USAGE: Rotate release <x> <y>
1076	#
1077	# Called automatically when the user clicks/drags/releases in the
1078	# plot area. Moves the plot according to the user's actions.
1079	# ----------------------------------------------------------------------
1080	itcl::body Rappture::VtkSurfaceViewer::Rotate {option x y} {
1081	switch -- $option {
1082	"click" {
1083	$itk_component(view) configure -cursor fleur
1084	set _click(x) $x
1085	set _click(y) $y
1086	}
1087	"drag" {
1088	if {[array size _click] == 0} {
1089	Rotate click $x $y
1090	} else {
1091	set w [winfo width $itk_component(view)]
1092	set h [winfo height $itk_component(view)]
1093	if {$w <= 0 \|\| $h <= 0} {
1094	return
1095	}
1096
1097	if {[catch {
1098	# this fails sometimes for no apparent reason
1099	set dx [expr {double($x-$_click(x))/$w}]
1100	set dy [expr {double($y-$_click(y))/$h}]
1101	}]} {
1102	return
1103	}
1104	if { $dx == 0 && $dy == 0 } {
1105	return
1106	}
1107	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1108	EventuallyRotate $q
1109	set _click(x) $x
1110	set _click(y) $y
1111	}
1112	}
1113	"release" {
1114	Rotate drag $x $y
1115	$itk_component(view) configure -cursor ""
1116	catch {unset _click}
1117	}
1118	default {
1119	error "bad option \"$option\": should be click, drag, release"
1120	}
1121	}
1122	}
1123
1124	itcl::body Rappture::VtkSurfaceViewer::Pick {x y} {
1125	foreach tag [CurrentDatasets -visible] {
1126	SendCmd "dataset getscalar pixel $x $y $tag"
1127	}
1128	}
1129
1130	# ----------------------------------------------------------------------
1131	# USAGE: $this Pan click x y
1132	# $this Pan drag x y
1133	# $this Pan release x y
1134	#
1135	# Called automatically when the user clicks on one of the zoom
1136	# controls for this widget. Changes the zoom for the current view.
1137	# ----------------------------------------------------------------------
1138	itcl::body Rappture::VtkSurfaceViewer::Pan {option x y} {
1139	switch -- $option {
1140	"set" {
1141	set w [winfo width $itk_component(view)]
1142	set h [winfo height $itk_component(view)]
1143	set x [expr $x / double($w)]
1144	set y [expr $y / double($h)]
1145	set _view(-xpan) [expr $_view(-xpan) + $x]
1146	set _view(-ypan) [expr $_view(-ypan) + $y]
1147	PanCamera
1148	return
1149	}
1150	"click" {
1151	set _click(x) $x
1152	set _click(y) $y
1153	$itk_component(view) configure -cursor hand1
1154	}
1155	"drag" {
1156	if { ![info exists _click(x)] } {
1157	set _click(x) $x
1158	}
1159	if { ![info exists _click(y)] } {
1160	set _click(y) $y
1161	}
1162	set w [winfo width $itk_component(view)]
1163	set h [winfo height $itk_component(view)]
1164	set dx [expr ($_click(x) - $x)/double($w)]
1165	set dy [expr ($_click(y) - $y)/double($h)]
1166	set _click(x) $x
1167	set _click(y) $y
1168	set _view(-xpan) [expr $_view(-xpan) - $dx]
1169	set _view(-ypan) [expr $_view(-ypan) - $dy]
1170	PanCamera
1171	}
1172	"release" {
1173	Pan drag $x $y
1174	$itk_component(view) configure -cursor ""
1175	}
1176	default {
1177	error "unknown option \"$option\": should set, click, drag, or release"
1178	}
1179	}
1180	}
1181
1182	# ----------------------------------------------------------------------
1183	# USAGE: InitSettings <what> ?<value>?
1184	#
1185	# Used internally to update rendering settings whenever parameters
1186	# change in the popup settings panel. Sends the new settings off
1187	# to the back end.
1188	# ----------------------------------------------------------------------
1189	itcl::body Rappture::VtkSurfaceViewer::InitSettings { args } {
1190	foreach spec $args {
1191	AdjustSetting $spec
1192	}
1193	}
1194
1195	#
1196	# AdjustSetting --
1197	#
1198	# Changes/updates a specific setting in the widget. There are
1199	# usually user-setable option. Commands are sent to the render
1200	# server.
1201	#
1202	itcl::body Rappture::VtkSurfaceViewer::AdjustSetting {what {value ""}} {
1203	if { ![isconnected] } {
1204	return
1205	}
1206	switch -- $what {
1207	"-axesvisible" {
1208	set bool $_settings($what)
1209	SendCmd "axis visible all $bool"
1210	}
1211	"-axislabels" {
1212	set bool $_settings($what)
1213	SendCmd "axis labels all $bool"
1214	}
1215	"-axisminorticks" {
1216	set bool $_settings($what)
1217	SendCmd "axis minticks all $bool"
1218	}
1219	"-axismode" {
1220	set mode [$itk_component(axisMode) value]
1221	set mode [$itk_component(axisMode) translate $mode]
1222	set _settings($what) $mode
1223	SendCmd "axis flymode $mode"
1224	}
1225	"-background" {
1226	set bgcolor [$itk_component(background) value]
1227	array set fgcolors {
1228	"black" "white"
1229	"white" "black"
1230	"grey" "black"
1231	}
1232	configure -plotbackground $bgcolor \
1233	-plotforeground $fgcolors($bgcolor)
1234	$itk_component(view) delete "legend"
1235	DrawLegend
1236	}
1237	"-colormap" {
1238	set _changed($what) 1
1239	StartBufferingCommands
1240	set color [$itk_component(colormap) value]
1241	set _settings($what) $color
1242	if { $color == "none" } {
1243	if { $_settings(-colormapvisible) } {
1244	SendCmd "contour2d colormode constant {}"
1245	SendCmd "polydata colormode constant {}"
1246	set _settings(-colormapvisible) 0
1247	}
1248	} else {
1249	if { !$_settings(-colormapvisible) } {
1250	#SendCmd [list contour2d colormode $_colorMode $_curFldName]
1251	SendCmd [list polydata colormode $_colorMode $_curFldName]
1252	set _settings(-colormapvisible) 1
1253	}
1254	SetCurrentColormap $color
1255	if {$_settings(-colormapdiscrete)} {
1256	set numColors [expr $_settings(-numcontours) + 1]
1257	SendCmd "colormap res $numColors $color"
1258	}
1259	}
1260	StopBufferingCommands
1261	EventuallyRequestLegend
1262	}
1263	"-colormapdiscrete" {
1264	set bool $_settings($what)
1265	set numColors [expr $_settings(-numcontours) + 1]
1266	StartBufferingCommands
1267	if {$bool} {
1268	SendCmd "colormap res $numColors"
1269	# Discrete colormap requires preinterp on
1270	SendCmd "polydata preinterp on"
1271	} else {
1272	SendCmd "colormap res default"
1273	# FIXME: add setting for preinterp (default on)
1274	SendCmd "polydata preinterp on"
1275	}
1276	StopBufferingCommands
1277	EventuallyRequestLegend
1278	}
1279	"-field" {
1280	set label [$itk_component(field) value]
1281	set fname [$itk_component(field) translate $label]
1282	set _settings($what) $fname
1283	if { [info exists _fields($fname)] } {
1284	foreach { label units components } $_fields($fname) break
1285	if { $components > 1 } {
1286	set _colorMode vmag
1287	} else {
1288	set _colorMode scalar
1289	}
1290	set _curFldName $fname
1291	set _curFldLabel $label
1292	} else {
1293	puts stderr "unknown field \"$fname\""
1294	return
1295	}
1296	SendCmd [list dataset scalar $_curFldName]
1297	if { ![info exists _limits($_curFldName)] } {
1298	SendCmd "dataset maprange all"
1299	} else {
1300	foreach { vmin vmax } $_limits($_curFldName) break
1301	SendCmd [list dataset maprange explicit $vmin $vmax $_curFldName]
1302	}
1303	#SendCmd [list contour2d colormode $_colorMode $_curFldName]
1304	SendCmd [list polydata colormode $_colorMode $_curFldName]
1305	UpdateContourList
1306	SendCmd "contour2d contourlist [list $_contourList]"
1307	SendCmd "camera reset"
1308	DrawLegend
1309	}
1310	"-isolinecolor" {
1311	set _changed($what) 1
1312	set color [$itk_component(isolinecolor) value]
1313	if { $color == "none" } {
1314	if { $_settings(-isolinesvisible) } {
1315	set _changed(-isolinesvisible) 1
1316	foreach tag [CurrentDatasets -visible] {
1317	SendCmd "contour2d visible 0 $tag"
1318	}
1319	set _settings(-isolinesvisible) 0
1320	}
1321	} else {
1322	set _settings($what) $color
1323	if { !$_settings(-isolinesvisible) } {
1324	set _changed(-isolinesvisible) 1
1325	foreach tag [CurrentDatasets -visible] {
1326	SendCmd "contour2d visible 1 $tag"
1327	}
1328	set _settings(-isolinesvisible) 1
1329	}
1330	SendCmd "contour2d linecolor [Color2RGB $color]"
1331	}
1332	DrawLegend
1333	}
1334	"-isolinesvisible" {
1335	set _changed($what) 1
1336	set bool $_settings($what)
1337	SendCmd "contour2d visible 0"
1338	if { $bool } {
1339	if { [$itk_component(isolinecolor) value] != $_settings(-isolinecolor)} {
1340	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1341	}
1342	foreach tag [CurrentDatasets -visible] {
1343	SendCmd "contour2d visible $bool $tag"
1344	}
1345	}
1346	DrawLegend
1347	}
1348	"-legendvisible" {
1349	if { !$_settings($what) } {
1350	$itk_component(view) delete legend
1351	}
1352	DrawLegend
1353	}
1354	"-numcontours" {
1355	set _settings($what) [$itk_component(numcontours) value]
1356	set _currentNumContours $_settings($what)
1357	UpdateContourList
1358	set _changed($what) 1
1359	SendCmd "contour2d contourlist [list $_contourList]"
1360	if {$_settings(-colormapdiscrete)} {
1361	set numColors [expr $_settings($what) + 1]
1362	SendCmd "colormap res $numColors"
1363	EventuallyRequestLegend
1364	} else {
1365	DrawLegend
1366	}
1367	}
1368	"-outline" {
1369	set _changed($what) 1
1370	set bool $_settings($what)
1371	SendCmd "outline visible 0"
1372	if { $bool } {
1373	foreach tag [CurrentDatasets -visible] {
1374	SendCmd "outline visible $bool $tag"
1375	}
1376	}
1377	}
1378	"-surfaceedges" {
1379	set _changed($what) 1
1380	set bool $_settings($what)
1381	SendCmd "polydata edges $bool"
1382	}
1383	"-surfacelighting" {
1384	set _changed($what) 1
1385	set bool $_settings($what)
1386	SendCmd "polydata lighting $bool"
1387	}
1388	"-surfaceopacity" {
1389	set _changed($what) 1
1390	set val $_settings($what)
1391	set sval [expr { 0.01 * double($val) }]
1392	SendCmd "polydata opacity $sval"
1393	}
1394	"-surfacevisible" {
1395	set _changed($what) 1
1396	set bool $_settings($what)
1397	SendCmd "polydata visible 0"
1398	if { $bool } {
1399	foreach tag [CurrentDatasets -visible] {
1400	SendCmd "polydata visible $bool $tag"
1401	}
1402	Rappture::Tooltip::for $itk_component(surface) \
1403	"Hide the surface"
1404	} else {
1405	Rappture::Tooltip::for $itk_component(surface) \
1406	"Show the surface"
1407	}
1408	DrawLegend
1409	}
1410	"-surfacewireframe" {
1411	set _changed($what) 1
1412	set bool $_settings($what)
1413	SendCmd "polydata wireframe $bool"
1414	}
1415	"-xgrid" - "-ygrid" - "-zgrid" {
1416	set axis [string tolower [string range $what 1 1]]
1417	set bool $_settings($what)
1418	SendCmd "axis grid $axis $bool"
1419	}
1420	default {
1421	error "don't know how to fix $what"
1422	}
1423	}
1424	}
1425
1426	#
1427	# RequestLegend --
1428	#
1429	# Request a new legend from the server. The size of the legend
1430	# is determined from the height of the canvas.
1431	#
1432	# This should be called when
1433	# 1. A new current colormap is set.
1434	# 2. Window is resized.
1435	# 3. The limits of the data have changed. (Just need a redraw).
1436	# 4. Number of isolines have changed. (Just need a redraw).
1437	# 5. Legend becomes visible (Just need a redraw).
1438	#
1439	itcl::body Rappture::VtkSurfaceViewer::RequestLegend {} {
1440	set _legendPending 0
1441	if { ![info exists _fields($_curFldName)] } {
1442	return
1443	}
1444	set fname $_curFldName
1445	set font "Arial 8"
1446	set lineht [font metrics $font -linespace]
1447	set w 12
1448	set h [expr {$_height - 2 * ($lineht + 2)}]
1449	if { $h < 1 } {
1450	return
1451	}
1452	if { [string match "component*" $fname] } {
1453	set title ""
1454	} else {
1455	if { [info exists _fields($fname)] } {
1456	foreach { title units } $_fields($fname) break
1457	if { $units != "" } {
1458	set title [format "%s (%s)" $title $units]
1459	}
1460	} else {
1461	set title $fname
1462	}
1463	}
1464	# If there's a title too, subtract one more line
1465	if { $title != "" } {
1466	incr h -$lineht
1467	}
1468	# Set the legend on the first dataset.
1469	if { $_currentColormap != "" } {
1470	set cmap $_currentColormap
1471	if { ![info exists _colormaps($cmap)] } {
1472	BuildColormap $cmap
1473	set _colormaps($cmap) 1
1474	}
1475	#SendCmd [list legend $cmap scalar $_curFldName {} $w $h 0]
1476	SendCmd "legend2 $cmap $w $h"
1477	}
1478	}
1479
1480	# ----------------------------------------------------------------------
1481	# CONFIGURATION OPTION: -plotbackground
1482	# ----------------------------------------------------------------------
1483	itcl::configbody Rappture::VtkSurfaceViewer::plotbackground {
1484	if { [isconnected] } {
1485	set rgb [Color2RGB $itk_option(-plotbackground)]
1486	SendCmd "screen bgcolor $rgb"
1487	}
1488	}
1489
1490	# ----------------------------------------------------------------------
1491	# CONFIGURATION OPTION: -plotforeground
1492	# ----------------------------------------------------------------------
1493	itcl::configbody Rappture::VtkSurfaceViewer::plotforeground {
1494	if { [isconnected] } {
1495	set rgb [Color2RGB $itk_option(-plotforeground)]
1496	SendCmd "axis color all $rgb"
1497	SendCmd "outline color $rgb"
1498	}
1499	}
1500
1501	itcl::body Rappture::VtkSurfaceViewer::BuildSurfaceTab {} {
1502
1503	set fg [option get $itk_component(hull) font Font]
1504	#set bfg [option get $itk_component(hull) boldFont Font]
1505
1506	set inner [$itk_component(main) insert end \
1507	-title "Surface Settings" \
1508	-icon [Rappture::icon volume-on]]
1509	$inner configure -borderwidth 4
1510
1511	checkbutton $inner.surface \
1512	-text "Surface" \
1513	-variable [itcl::scope _settings(-surfacevisible)] \
1514	-command [itcl::code $this AdjustSetting -surfacevisible] \
1515	-font "Arial 9"
1516
1517	checkbutton $inner.isolines \
1518	-text "Isolines" \
1519	-variable [itcl::scope _settings(-isolinesvisible)] \
1520	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1521	-font "Arial 9"
1522
1523	checkbutton $inner.colormapDiscrete \
1524	-text "Discrete Colormap" \
1525	-variable [itcl::scope _settings(-colormapdiscrete)] \
1526	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1527	-font "Arial 9"
1528
1529	checkbutton $inner.wireframe \
1530	-text "Wireframe" \
1531	-variable [itcl::scope _settings(-surfacewireframe)] \
1532	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1533	-font "Arial 9"
1534
1535	checkbutton $inner.lighting \
1536	-text "Enable Lighting" \
1537	-variable [itcl::scope _settings(-surfacelighting)] \
1538	-command [itcl::code $this AdjustSetting -surfacelighting] \
1539	-font "Arial 9"
1540
1541	checkbutton $inner.edges \
1542	-text "Edges" \
1543	-variable [itcl::scope _settings(-surfaceedges)] \
1544	-command [itcl::code $this AdjustSetting -surfaceedges] \
1545	-font "Arial 9"
1546
1547	checkbutton $inner.outline \
1548	-text "Outline" \
1549	-variable [itcl::scope _settings(-outline)] \
1550	-command [itcl::code $this AdjustSetting -outline] \
1551	-font "Arial 9"
1552
1553	checkbutton $inner.legend \
1554	-text "Legend" \
1555	-variable [itcl::scope _settings(-legendvisible)] \
1556	-command [itcl::code $this AdjustSetting -legendvisible] \
1557	-font "Arial 9"
1558
1559	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1560	itk_component add isolinecolor {
1561	Rappture::Combobox $inner.linecolor -width 10 -editable 0
1562	}
1563	$inner.linecolor choices insert end \
1564	"black" "black" \
1565	"blue" "blue" \
1566	"cyan" "cyan" \
1567	"green" "green" \
1568	"grey" "grey" \
1569	"magenta" "magenta" \
1570	"orange" "orange" \
1571	"red" "red" \
1572	"white" "white" \
1573	"none" "none"
1574
1575	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1576	bind $inner.linecolor <<Value>> \
1577	[itcl::code $this AdjustSetting -isolinecolor]
1578
1579	label $inner.background_l -text "Background" -font "Arial 9"
1580	itk_component add background {
1581	Rappture::Combobox $inner.background -width 10 -editable 0
1582	}
1583	$inner.background choices insert end \
1584	"black" "black" \
1585	"white" "white" \
1586	"grey" "grey"
1587
1588	$itk_component(background) value $_settings(-background)
1589	bind $inner.background <<Value>> \
1590	[itcl::code $this AdjustSetting -background]
1591
1592	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1593	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1594	-variable [itcl::scope _settings(-surfaceopacity)] \
1595	-width 10 \
1596	-showvalue off \
1597	-command [itcl::code $this AdjustSetting -surfaceopacity]
1598
1599	itk_component add field_l {
1600	label $inner.field_l -text "Field" -font "Arial 9"
1601	} {
1602	ignore -font
1603	}
1604	itk_component add field {
1605	Rappture::Combobox $inner.field -width 10 -editable 0
1606	}
1607	bind $inner.field <<Value>> \
1608	[itcl::code $this AdjustSetting -field]
1609
1610	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1611	itk_component add colormap {
1612	Rappture::Combobox $inner.colormap -width 10 -editable 0
1613	}
1614	$inner.colormap choices insert end [GetColormapList]
1615
1616	$itk_component(colormap) value "BCGYR"
1617	bind $inner.colormap <<Value>> \
1618	[itcl::code $this AdjustSetting -colormap]
1619
1620	label $inner.numcontours_l -text "Number of Isolines" -font "Arial 9"
1621	itk_component add numcontours {
1622	Rappture::Spinint $inner.numcontours \
1623	-min 0 -max 50 -font "arial 9"
1624	}
1625	$itk_component(numcontours) value $_settings(-numcontours)
1626	bind $itk_component(numcontours) <<Value>> \
1627	[itcl::code $this AdjustSetting -numcontours]
1628
1629	blt::table $inner \
1630	0,0 $inner.field_l -anchor w -pady 2 \
1631	0,1 $inner.field -anchor w -pady 2 -fill x \
1632	1,0 $inner.colormap_l -anchor w -pady 2 \
1633	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1634	2,0 $inner.linecolor_l -anchor w -pady 2 \
1635	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
1636	3,0 $inner.background_l -anchor w -pady 2 \
1637	3,1 $inner.background -anchor w -pady 2 -fill x \
1638	4,0 $inner.numcontours_l -anchor w -pady 2 \
1639	4,1 $inner.numcontours -anchor w -pady 2 \
1640	5,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1641	6,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1642	7,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1643	8,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1644	9,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1645	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1646	11,0 $inner.legend -anchor w -pady 2 \
1647	12,0 $inner.opacity_l -anchor w -pady 2 \
1648	12,1 $inner.opacity -fill x -pady 2 -fill x \
1649
1650	blt::table configure $inner r* c* -resize none
1651	blt::table configure $inner r13 c1 -resize expand
1652	}
1653
1654	itcl::body Rappture::VtkSurfaceViewer::BuildAxisTab {} {
1655
1656	set fg [option get $itk_component(hull) font Font]
1657	#set bfg [option get $itk_component(hull) boldFont Font]
1658
1659	set inner [$itk_component(main) insert end \
1660	-title "Axis Settings" \
1661	-icon [Rappture::icon axis2]]
1662	$inner configure -borderwidth 4
1663
1664	checkbutton $inner.visible \
1665	-text "Axes" \
1666	-variable [itcl::scope _settings(-axesvisible)] \
1667	-command [itcl::code $this AdjustSetting -axesvisible] \
1668	-font "Arial 9"
1669
1670	checkbutton $inner.labels \
1671	-text "Axis Labels" \
1672	-variable [itcl::scope _settings(-axislabels)] \
1673	-command [itcl::code $this AdjustSetting -axislabels] \
1674	-font "Arial 9"
1675	label $inner.grid_l -text "Grid" -font "Arial 9"
1676	checkbutton $inner.xgrid \
1677	-text "X" \
1678	-variable [itcl::scope _settings(-xgrid)] \
1679	-command [itcl::code $this AdjustSetting -xgrid] \
1680	-font "Arial 9"
1681	checkbutton $inner.ygrid \
1682	-text "Y" \
1683	-variable [itcl::scope _settings(-ygrid)] \
1684	-command [itcl::code $this AdjustSetting -ygrid] \
1685	-font "Arial 9"
1686	checkbutton $inner.zgrid \
1687	-text "Z" \
1688	-variable [itcl::scope _settings(-zgrid)] \
1689	-command [itcl::code $this AdjustSetting -zgrid] \
1690	-font "Arial 9"
1691	checkbutton $inner.minorticks \
1692	-text "Minor Ticks" \
1693	-variable [itcl::scope _settings(-axisminorticks)] \
1694	-command [itcl::code $this AdjustSetting -axisminorticks] \
1695	-font "Arial 9"
1696
1697	label $inner.mode_l -text "Mode" -font "Arial 9"
1698
1699	itk_component add axisMode {
1700	Rappture::Combobox $inner.mode -width 10 -editable 0
1701	}
1702	$inner.mode choices insert end \
1703	"static_triad" "static" \
1704	"closest_triad" "closest" \
1705	"furthest_triad" "farthest" \
1706	"outer_edges" "outer"
1707	$itk_component(axisMode) value $_settings(-axismode)
1708	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1709
1710	blt::table $inner \
1711	0,0 $inner.visible -anchor w -cspan 4 \
1712	1,0 $inner.labels -anchor w -cspan 4 \
1713	2,0 $inner.minorticks -anchor w -cspan 4 \
1714	4,0 $inner.grid_l -anchor w \
1715	4,1 $inner.xgrid -anchor w \
1716	4,2 $inner.ygrid -anchor w \
1717	4,3 $inner.zgrid -anchor w \
1718	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1719	5,1 $inner.mode -fill x -cspan 3
1720
1721	blt::table configure $inner r* c* -resize none
1722	blt::table configure $inner r7 c6 -resize expand
1723	blt::table configure $inner r3 -height 0.125i
1724	}
1725
1726	itcl::body Rappture::VtkSurfaceViewer::BuildCameraTab {} {
1727	set inner [$itk_component(main) insert end \
1728	-title "Camera Settings" \
1729	-icon [Rappture::icon camera]]
1730	$inner configure -borderwidth 4
1731
1732	label $inner.view_l -text "view" -font "Arial 9"
1733	set f [frame $inner.view]
1734	foreach side { front back left right top bottom } {
1735	button $f.$side -image [Rappture::icon view$side] \
1736	-command [itcl::code $this SetOrientation $side]
1737	Rappture::Tooltip::for $f.$side "Change the view to $side"
1738	pack $f.$side -side left
1739	}
1740
1741	blt::table $inner \
1742	0,0 $inner.view_l -anchor e -pady 2 \
1743	0,1 $inner.view -anchor w -pady 2
1744	blt::table configure $inner r0 -resize none
1745
1746	set labels { qx qy qz qw xpan ypan zoom }
1747	set row 1
1748	foreach tag $labels {
1749	label $inner.${tag}label -text $tag -font "Arial 9"
1750	entry $inner.${tag} -font "Arial 9" -bg white \
1751	-textvariable [itcl::scope _view(-$tag)]
1752	bind $inner.${tag} <Return> \
1753	[itcl::code $this camera set -${tag}]
1754	bind $inner.${tag} <KP_Enter> \
1755	[itcl::code $this camera set -${tag}]
1756	blt::table $inner \
1757	$row,0 $inner.${tag}label -anchor e -pady 2 \
1758	$row,1 $inner.${tag} -anchor w -pady 2
1759	blt::table configure $inner r$row -resize none
1760	incr row
1761	}
1762	checkbutton $inner.ortho \
1763	-text "Orthographic Projection" \
1764	-variable [itcl::scope _view(-ortho)] \
1765	-command [itcl::code $this camera set -ortho] \
1766	-font "Arial 9"
1767	blt::table $inner \
1768	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1769	blt::table configure $inner r$row -resize none
1770	incr row
1771
1772	blt::table configure $inner c* -resize none
1773	blt::table configure $inner c2 -resize expand
1774	blt::table configure $inner r$row -resize expand
1775	}
1776
1777	#
1778	# camera --
1779	#
1780	itcl::body Rappture::VtkSurfaceViewer::camera {option args} {
1781	switch -- $option {
1782	"show" {
1783	puts [array get _view]
1784	}
1785	"set" {
1786	set what [lindex $args 0]
1787	set x $_view($what)
1788	set code [catch { string is double $x } result]
1789	if { $code != 0 \|\| !$result } {
1790	return
1791	}
1792	switch -- $what {
1793	"-ortho" {
1794	if {$_view($what)} {
1795	SendCmd "camera mode ortho"
1796	} else {
1797	SendCmd "camera mode persp"
1798	}
1799	}
1800	"-xpan" - "-ypan" {
1801	PanCamera
1802	}
1803	"-qx" - "-qy" - "-qz" - "-qw" {
1804	set q [ViewToQuaternion]
1805	$_arcball quaternion $q
1806	EventuallyRotate $q
1807	}
1808	"-zoom" {
1809	SendCmd "camera zoom $_view($what)"
1810	}
1811	}
1812	}
1813	}
1814	}
1815
1816	itcl::body Rappture::VtkSurfaceViewer::GetVtkData { args } {
1817	set bytes ""
1818	foreach dataobj [get] {
1819	foreach cname [$dataobj components] {
1820	set tag $dataobj-$cname
1821	set contents [$dataobj vtkdata $cname]
1822	append bytes "$contents\n"
1823	}
1824	}
1825	return [list .vtk $bytes]
1826	}
1827
1828	itcl::body Rappture::VtkSurfaceViewer::GetImage { args } {
1829	if { [image width $_image(download)] > 0 &&
1830	[image height $_image(download)] > 0 } {
1831	set bytes [$_image(download) data -format "jpeg -quality 100"]
1832	set bytes [Rappture::encoding::decode -as b64 $bytes]
1833	return [list .jpg $bytes]
1834	}
1835	return ""
1836	}
1837
1838	itcl::body Rappture::VtkSurfaceViewer::BuildDownloadPopup { popup command } {
1839	Rappture::Balloon $popup \
1840	-title "[Rappture::filexfer::label downloadWord] as..."
1841	set inner [$popup component inner]
1842	label $inner.summary -text "" -anchor w
1843	radiobutton $inner.vtk_button -text "VTK data file" \
1844	-variable [itcl::scope _downloadPopup(format)] \
1845	-font "Arial 9" \
1846	-value vtk
1847	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1848	radiobutton $inner.image_button -text "Image File" \
1849	-variable [itcl::scope _downloadPopup(format)] \
1850	-font "Arial 9" \
1851	-value image
1852	Rappture::Tooltip::for $inner.image_button \
1853	"Save as digital image."
1854
1855	button $inner.ok -text "Save" \
1856	-highlightthickness 0 -pady 2 -padx 3 \
1857	-command $command \
1858	-compound left \
1859	-image [Rappture::icon download]
1860
1861	button $inner.cancel -text "Cancel" \
1862	-highlightthickness 0 -pady 2 -padx 3 \
1863	-command [list $popup deactivate] \
1864	-compound left \
1865	-image [Rappture::icon cancel]
1866
1867	blt::table $inner \
1868	0,0 $inner.summary -cspan 2 \
1869	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1870	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1871	4,1 $inner.cancel -width .9i -fill y \
1872	4,0 $inner.ok -padx 2 -width .9i -fill y
1873	blt::table configure $inner r3 -height 4
1874	blt::table configure $inner r4 -pady 4
1875	raise $inner.image_button
1876	$inner.vtk_button invoke
1877	return $inner
1878	}
1879
1880	itcl::body Rappture::VtkSurfaceViewer::SetObjectStyle { dataobj comp } {
1881	# Parse style string.
1882	set tag $dataobj-$comp
1883	array set style {
1884	-color BCGYR
1885	-constcolor white
1886	-edgecolor black
1887	-edges 0
1888	-isolinecolor white
1889	-isolinesvisible 0
1890	-levels 10
1891	-lighting 1
1892	-linewidth 1.0
1893	-opacity 1.0
1894	-outline 0
1895	-ptsize 1.0
1896	-surfacevisible 1
1897	-wireframe 0
1898	}
1899	set style(-constcolor) $itk_option(-plotforeground)
1900	array set style [$dataobj style $comp]
1901
1902	# This is too complicated. We want to set the colormap, number of
1903	# isolines and opacity for the dataset. They can be the default values,
1904	# the style hints loaded with the dataset, or set by user controls. As
1905	# datasets get loaded, they first use the defaults that are overidden
1906	# by the style hints. If the user changes the global controls, then that
1907	# overrides everything else. I don't know what it means when global
1908	# controls are specified as style hints by each dataset. It complicates
1909	# the code to handle aberrant cases.
1910
1911	if { $_changed(-surfaceedges) } {
1912	set style(-edges) $_settings(-surfaceedges)
1913	}
1914	if { $_changed(-surfacelighting) } {
1915	set style(-lighting) $_settings(-surfacelighting)
1916	}
1917	if { $_changed(-surfaceopacity) } {
1918	set style(-opacity) [expr $_settings(-surfaceopacity) * 0.01]
1919	}
1920	if { $_changed(-surfacewireframe) } {
1921	set style(-wireframe) $_settings(-surfacewireframe)
1922	}
1923	if { $_changed(-numcontours) } {
1924	set style(-levels) $_settings(-numcontours)
1925	}
1926	if { $_changed(-colormap) } {
1927	set style(-color) $_settings(-colormap)
1928	}
1929	if { $_currentColormap == "" } {
1930	SetCurrentColormap $style(-color)
1931	$itk_component(colormap) value $style(-color)
1932	}
1933	if { $_currentNumContours != $style(-levels) } {
1934	set _currentNumContours $style(-levels)
1935	set _settings(-numcontours) $_currentNumContours
1936	$itk_component(numcontours) value $_currentNumContours
1937	UpdateContourList
1938	DrawLegend
1939	}
1940	foreach setting {-outline -isolinesvisible -surfacevisible -isolinecolor} {
1941	if {$_changed($setting)} {
1942	# User-modified UI setting overrides style
1943	set style($setting) $_settings($setting)
1944	} else {
1945	# Set UI control to style setting (tool provided or default)
1946	set _settings($setting) $style($setting)
1947	}
1948	}
1949
1950	SendCmd "outline add $tag"
1951	SendCmd "outline color [Color2RGB $style(-constcolor)] $tag"
1952	SendCmd "outline visible $style(-outline) $tag"
1953
1954	SendCmd "polydata add $tag"
1955	if { $_curFldName != "" } {
1956	SendCmd [list polydata colormode $_colorMode $_curFldName $tag]
1957	}
1958	SendCmd "polydata edges $style(-edges) $tag"
1959	set _settings(-surfaceedges) $style(-edges)
1960	SendCmd "polydata color [Color2RGB $style(-constcolor)] $tag"
1961	SendCmd "polydata lighting $style(-lighting) $tag"
1962	set _settings(-surfacelighting) $style(-lighting)
1963	SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1964	SendCmd "polydata linewidth $style(-linewidth) $tag"
1965	SendCmd "polydata ptsize $style(-ptsize) $tag"
1966	SendCmd "polydata opacity $style(-opacity) $tag"
1967	set _settings(-surfaceopacity) [expr $style(-opacity) * 100.0]
1968	SetCurrentColormap $style(-color)
1969	SendCmd "polydata wireframe $style(-wireframe) $tag"
1970	set _settings(-surfacewireframe) $style(-wireframe)
1971
1972	SendCmd [list contour2d add contourlist $_contourList $tag]
1973	SendCmd "contour2d colormode constant {} $tag"
1974	SendCmd "contour2d color [Color2RGB $style(-isolinecolor)] $tag"
1975	}
1976
1977	itcl::body Rappture::VtkSurfaceViewer::IsValidObject { dataobj } {
1978	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
1979	return 0
1980	}
1981	return 1
1982	}
1983
1984	#
1985	# EnterLegend --
1986	#
1987	itcl::body Rappture::VtkSurfaceViewer::EnterLegend { x y } {
1988	SetLegendTip $x $y
1989	}
1990
1991	#
1992	# MotionLegend --
1993	#
1994	itcl::body Rappture::VtkSurfaceViewer::MotionLegend { x y } {
1995	Rappture::Tooltip::tooltip cancel
1996	set c $itk_component(view)
1997	set cw [winfo width $c]
1998	set ch [winfo height $c]
1999	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2000	SetLegendTip $x $y
2001	}
2002	}
2003
2004	#
2005	# LeaveLegend --
2006	#
2007	itcl::body Rappture::VtkSurfaceViewer::LeaveLegend { } {
2008	Rappture::Tooltip::tooltip cancel
2009	.rappturetooltip configure -icon ""
2010	}
2011
2012	#
2013	# SetLegendTip --
2014	#
2015	itcl::body Rappture::VtkSurfaceViewer::SetLegendTip { x y } {
2016	set fname $_curFldName
2017	set c $itk_component(view)
2018	set w [winfo width $c]
2019	set h [winfo height $c]
2020
2021	set font "Arial 8"
2022	set lineht [font metrics $font -linespace]
2023
2024	set ih [image height $_image(legend)]
2025	set iy [expr $y - ($lineht + 2)]
2026
2027	if { [string match "component*" $fname] } {
2028	set title ""
2029	} else {
2030	if { [info exists _fields($fname)] } {
2031	foreach { title units } $_fields($fname) break
2032	if { $units != "" } {
2033	set title [format "%s (%s)" $title $units]
2034	}
2035	} else {
2036	set title $fname
2037	}
2038	}
2039	# If there's a legend title, increase the offset by the line height.
2040	if { $title != "" } {
2041	incr iy -$lineht
2042	}
2043	# Make a swatch of the selected color
2044	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2045	return
2046	}
2047	if { ![info exists _image(swatch)] } {
2048	set _image(swatch) [image create photo -width 24 -height 24]
2049	}
2050	set color [eval format "\#%02x%02x%02x" $pixel]
2051	$_image(swatch) put black -to 0 0 23 23
2052	$_image(swatch) put $color -to 1 1 22 22
2053	.rappturetooltip configure -icon $_image(swatch)
2054
2055	# Compute the value of the point
2056	if { [info exists _limits($_curFldName)] } {
2057	foreach { vmin vmax } $_limits($_curFldName) break
2058	set t [expr 1.0 - (double($iy) / double($ih-1))]
2059	set value [expr $t * ($vmax - $vmin) + $vmin]
2060	} else {
2061	set value 0.0
2062	}
2063	set tx [expr $x + 15]
2064	set ty [expr $y - 5]
2065	if { [info exists _isolines($y)] } {
2066	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2067	} else {
2068	Rappture::Tooltip::text $c [format "$title %g" $value]
2069	}
2070	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2071	}
2072
2073	#
2074	# ReceiveLegend --
2075	#
2076	# Invoked automatically whenever the "legend" command comes in from
2077	# the rendering server. Indicates that binary image data with the
2078	# specified <size> will follow.
2079	#
2080	itcl::body Rappture::VtkSurfaceViewer::ReceiveLegend { colormap title min max size } {
2081	DebugTrace "Enter"
2082	set _title $title
2083	regsub {$mag$} $title "" _title
2084	if { [IsConnected] } {
2085	set bytes [ReceiveBytes $size]
2086	if { ![info exists _image(legend)] } {
2087	set _image(legend) [image create photo]
2088	}
2089	$_image(legend) configure -data $bytes
2090	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2091	if { [catch {DrawLegend} errs] != 0 } {
2092	global errorInfo
2093	puts stderr "errs=$errs errorInfo=$errorInfo"
2094	}
2095	}
2096	}
2097
2098	#
2099	# DrawLegend --
2100	#
2101	# Draws the legend on the canvas on the right side of the plot area.
2102	#
2103	itcl::body Rappture::VtkSurfaceViewer::DrawLegend {} {
2104	set fname $_curFldName
2105	set c $itk_component(view)
2106	set w [winfo width $c]
2107	set h [winfo height $c]
2108	set font "Arial 8"
2109	set lineht [font metrics $font -linespace]
2110
2111	if { [string match "component*" $fname] } {
2112	set title ""
2113	} else {
2114	if { [info exists _fields($fname)] } {
2115	foreach { title units } $_fields($fname) break
2116	if { $units != "" } {
2117	set title [format "%s (%s)" $title $units]
2118	}
2119	} else {
2120	set title $fname
2121	}
2122	}
2123	set x [expr $w - 2]
2124	if { !$_settings(-legendvisible) } {
2125	$c delete legend
2126	return
2127	}
2128	if { [$c find withtag "legend"] == "" } {
2129	set y 2
2130	# If there's a legend title, create a text item for the title.
2131	$c create text $x $y \
2132	-anchor ne \
2133	-fill $itk_option(-plotforeground) -tags "title legend" \
2134	-font $font
2135	if { $title != "" } {
2136	incr y $lineht
2137	}
2138	$c create text $x $y \
2139	-anchor ne \
2140	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2141	-font $font
2142	incr y $lineht
2143	$c create image $x $y \
2144	-anchor ne \
2145	-image $_image(legend) -tags "colormap legend"
2146	$c create rectangle $x $y 1 1 \
2147	-fill "" -outline "" -tags "sensor legend"
2148	$c create text $x [expr {$h-2}] \
2149	-anchor se \
2150	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2151	-font $font
2152	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2153	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2154	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2155	}
2156	$c delete isoline
2157	set x2 $x
2158	set iw [image width $_image(legend)]
2159	set ih [image height $_image(legend)]
2160	set x1 [expr $x2 - ($iw*12)/10]
2161	set color $_settings(-isolinecolor)
2162	# Draw the isolines on the legend.
2163	array unset _isolines
2164	if { $color != "none" && [info exists _limits($_curFldName)] &&
2165	$_settings(-isolinesvisible) && $_settings(-numcontours) > 0 } {
2166
2167	foreach { vmin vmax } $_limits($_curFldName) break
2168	set range [expr double($vmax - $vmin)]
2169	if { $range <= 0.0 } {
2170	set range 1.0; # Min is greater or equal to max.
2171	}
2172	set tags "isoline legend"
2173	set offset [expr 2 + $lineht]
2174	if { $title != "" } {
2175	incr offset $lineht
2176	}
2177	foreach value $_contourList {
2178	set norm [expr 1.0 - (($value - $vmin) / $range)]
2179	set y1 [expr int(round(($norm * $ih) + $offset))]
2180	for { set off 0 } { $off < 3 } { incr off } {
2181	set _isolines([expr $y1 + $off]) $value
2182	set _isolines([expr $y1 - $off]) $value
2183	}
2184	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2185	}
2186	}
2187
2188	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2189	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2190	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2191	# Reset the item coordinates according the current size of the plot.
2192	$c itemconfigure title -text $title
2193	if { [info exists _limits($_curFldName)] } {
2194	foreach { vmin vmax } $_limits($_curFldName) break
2195	$c itemconfigure vmin -text [format %g $vmin]
2196	$c itemconfigure vmax -text [format %g $vmax]
2197	}
2198	set y 2
2199	# If there's a legend title, move the title to the correct position
2200	if { $title != "" } {
2201	$c itemconfigure title -text $title
2202	$c coords title $x $y
2203	incr y $lineht
2204	$c raise title
2205	}
2206	$c coords vmax $x $y
2207	incr y $lineht
2208	$c coords colormap $x $y
2209	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2210	$c raise sensor
2211	$c coords vmin $x [expr {$h - 2}]
2212	}
2213
2214	# ----------------------------------------------------------------------
2215	# USAGE: LegendTitleAction post
2216	# USAGE: LegendTitleAction enter
2217	# USAGE: LegendTitleAction leave
2218	# USAGE: LegendTitleAction save
2219	#
2220	# Used internally to handle the dropdown list for the fields menu combobox.
2221	# The post option is invoked when the field title is pressed to launch the
2222	# dropdown. The enter option is invoked when the user mouses over the field
2223	# title. The leave option is invoked when the user moves the mouse away
2224	# from the field title. The save option is invoked whenever there is a
2225	# selection from the list, to alert the visualization server.
2226	# ----------------------------------------------------------------------
2227	itcl::body Rappture::VtkSurfaceViewer::LegendTitleAction {option} {
2228	set c $itk_component(view)
2229	switch -- $option {
2230	post {
2231	foreach { x1 y1 x2 y2 } [$c bbox title] break
2232	set cw [winfo width $itk_component(view)]
2233	set mw [winfo reqwidth $itk_component(fieldmenu)]
2234	set x1 [expr $cw - $mw]
2235	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2236	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2237	tk_popup $itk_component(fieldmenu) $x $y
2238	}
2239	enter {
2240	$c itemconfigure title -fill red
2241	}
2242	leave {
2243	$c itemconfigure title -fill $itk_option(-plotforeground)
2244	}
2245	save {
2246	$itk_component(field) value $_curFldLabel
2247	AdjustSetting -field
2248	}
2249	default {
2250	error "bad option \"$option\": should be post, enter, leave or save"
2251	}
2252	}
2253	}
2254
2255	#
2256	# SetCurrentColormap --
2257	#
2258	itcl::body Rappture::VtkSurfaceViewer::SetCurrentColormap { name } {
2259	# Keep track of the colormaps that we build.
2260	if { $name != "none" && ![info exists _colormaps($name)] } {
2261	BuildColormap $name
2262	set _colormaps($name) 1
2263	}
2264	set _currentColormap $name
2265	SendCmd "contour2d colormap $_currentColormap"
2266	SendCmd "polydata colormap $_currentColormap"
2267	}
2268
2269	#
2270	# BuildColormap --
2271	#
2272	# Build the designated colormap on the server.
2273	#
2274	itcl::body Rappture::VtkSurfaceViewer::BuildColormap { name } {
2275	set cmap [ColorsToColormap $name]
2276	if { [llength $cmap] == 0 } {
2277	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2278	}
2279	set amap "0.0 1.0 1.0 1.0"
2280	SendCmd "colormap add $name { $cmap } { $amap }"
2281	}
2282
2283	itcl::body Rappture::VtkSurfaceViewer::SetOrientation { side } {
2284	array set positions {
2285	front "1 0 0 0"
2286	back "0 0 1 0"
2287	left "0.707107 0 -0.707107 0"
2288	right "0.707107 0 0.707107 0"
2289	top "0.707107 -0.707107 0 0"
2290	bottom "0.707107 0.707107 0 0"
2291	}
2292	foreach name { -qw -qx -qy -qz } value $positions($side) {
2293	set _view($name) $value
2294	}
2295	set q [ViewToQuaternion]
2296	$_arcball quaternion $q
2297	SendCmd "camera orient $q"
2298	SendCmd "camera reset"
2299	set _view(-xpan) 0
2300	set _view(-ypan) 0
2301	set _view(-zoom) 1.0
2302	}
2303
2304	itcl::body Rappture::VtkSurfaceViewer::UpdateContourList {} {
2305	if { ![info exists _limits($_curFldName)] } {
2306	return
2307	}
2308	if { $_currentNumContours < 1 } {
2309	set _contourList ""
2310	return
2311	}
2312	foreach { vmin vmax } $_limits($_curFldName) break
2313	set v [blt::vector create \#auto]
2314	$v seq $vmin $vmax [expr $_currentNumContours+2]
2315	$v delete end 0
2316	set _contourList [$v range 0 end]
2317	blt::vector destroy $v
2318	}
2319
2320	itcl::body Rappture::VtkSurfaceViewer::SetCurrentFieldName { dataobj } {
2321	set _first $dataobj
2322	$itk_component(field) choices delete 0 end
2323	$itk_component(fieldmenu) delete 0 end
2324	array unset _fields
2325	set _curFldName ""
2326	foreach cname [$_first components] {
2327	foreach fname [$_first fieldnames $cname] {
2328	if { [info exists _fields($fname)] } {
2329	continue
2330	}
2331	foreach { label units components } \
2332	[$_first fieldinfo $fname] break
2333	$itk_component(field) choices insert end "$fname" "$label"
2334	$itk_component(fieldmenu) add radiobutton -label "$label" \
2335	-value $label -variable [itcl::scope _curFldLabel] \
2336	-selectcolor red \
2337	-activebackground $itk_option(-plotbackground) \
2338	-activeforeground $itk_option(-plotforeground) \
2339	-font "Arial 8" \
2340	-command [itcl::code $this LegendTitleAction save]
2341	set _fields($fname) [list $label $units $components]
2342	if { $_curFldName == "" } {
2343	set _curFldName $fname
2344	set _curFldLabel $label
2345	}
2346	}
2347	}
2348	$itk_component(field) value $_curFldLabel
2349	}

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source: trunk/gui/scripts/vtksurfaceviewer.tcl

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