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source: branches/1.7/gui/scripts/vtkstreamlinesviewer.tcl @ 6306

Last change on this file since 6306 was 6306, checked in by ldelgass, 8 years ago
merge fixes from trunk
File size: 84.0 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkstreamlinesviewer - Vtk streamlines object 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 *VtkStreamlinesViewer.width 4i widgetDefault
19	option add VtkStreamlinesViewercursor crosshair widgetDefault
20	option add *VtkStreamlinesViewer.height 4i widgetDefault
21	option add *VtkStreamlinesViewer.foreground black widgetDefault
22	option add *VtkStreamlinesViewer.controlBackground gray widgetDefault
23	option add *VtkStreamlinesViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkStreamlinesViewer.plotBackground black widgetDefault
25	option add *VtkStreamlinesViewer.plotForeground white widgetDefault
26	option add *VtkStreamlinesViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkStreamlinesViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkStreamlinesViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkStreamlinesViewer {
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 BuildCutplanesTab {}
70	private method BuildDownloadPopup { widget command }
71	private method BuildStreamsTab {}
72	private method BuildSurfaceTab {}
73	private method DrawLegend {}
74	private method Combo { option }
75	private method Connect {}
76	private method CurrentDatasets {args}
77	private method Disconnect {}
78	private method DoRescale {}
79	private method DoReseed {}
80	private method DoResize {}
81	private method DoRotate {}
82	private method EnterLegend { x y }
83	private method EventuallyRescale { length }
84	private method EventuallyReseed { numPoints }
85	private method EventuallyResize { w h }
86	private method EventuallyRotate { q }
87	private method EventuallySetCutplane { axis args }
88	private method GetImage { args }
89	private method GetVtkData { args }
90	private method InitSettings { args }
91	private method IsValidObject { dataobj }
92	private method LeaveLegend {}
93	private method MotionLegend { x y }
94	private method Pan {option x y}
95	private method PanCamera {}
96	private method Pick {x y}
97	private method QuaternionToView { q } {
98	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
99	}
100	private method Rebuild {}
101	private method ReceiveDataset { args }
102	private method ReceiveImage { args }
103	private method ReceiveLegend { colormap title vmin vmax size }
104	private method RequestLegend {}
105	private method Rotate {option x y}
106	private method SetCurrentColormap { color }
107	private method SetLegendTip { x y }
108	private method SetObjectStyle { dataobj comp }
109	private method Slice {option args}
110	private method SetOrientation { side }
111	private method ViewToQuaternion {} {
112	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
113	}
114	private method Zoom {option}
115
116	private variable _arcball ""
117
118	private variable _dlist ""; # list of data objects
119	private variable _obj2ovride; # maps dataobj => style override
120	private variable _datasets; # contains all the dataobj-component
121	# datasets in the server
122	private variable _colormaps; # contains all the colormaps
123	# in the server.
124	private variable _currentColormap ""
125
126	private variable _click; # info used for rotate operations
127	private variable _limits; # autoscale min/max for all axes
128	private variable _view; # view params for 3D view
129	private variable _settings
130	private variable _reset 1; # Connection to server has been reset.
131
132	private variable _first ""; # This is the topmost dataset.
133	private variable _start 0
134	private variable _title ""
135	private variable _seeds
136	private variable _width 0
137	private variable _height 0
138	private variable _resizePending 0
139	private variable _legendPending 0
140	private variable _rescalePending 0
141	private variable _reseedPending 0
142	private variable _rotatePending 0
143	private variable _cutplanePending 0
144	private variable _fields
145	private variable _curFldName ""
146	private variable _curFldLabel ""
147	private variable _field ""
148	private variable _streamlinesLength 0
149	private variable _numSeeds 200
150	private variable _colorMode "vmag"; # Mode of colormap (vmag or scalar)
151
152	private common _downloadPopup; # download options from popup
153	private common _hardcopy
154	}
155
156	itk::usual VtkStreamlinesViewer {
157	keep -background -foreground -cursor -font
158	keep -plotbackground -plotforeground
159	}
160
161	# ----------------------------------------------------------------------
162	# CONSTRUCTOR
163	# ----------------------------------------------------------------------
164	itcl::body Rappture::VtkStreamlinesViewer::constructor {args} {
165	set _serverType "vtkvis"
166
167	#DebugOn
168	EnableWaitDialog 2000
169
170	# Rebuild event
171	$_dispatcher register !rebuild
172	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
173
174	# Resize event
175	$_dispatcher register !resize
176	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
177
178	# Legend event
179	$_dispatcher register !legend
180	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
181
182	# Rescale streamlines event
183	$_dispatcher register !rescale
184	$_dispatcher dispatch $this !rescale "[itcl::code $this DoRescale]; list"
185
186	# Reseed event
187	$_dispatcher register !reseed
188	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
189
190	# Rotate event
191	$_dispatcher register !rotate
192	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
193
194	# X-Cutplane event
195	$_dispatcher register !xcutplane
196	$_dispatcher dispatch $this !xcutplane \
197	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
198
199	# Y-Cutplane event
200	$_dispatcher register !ycutplane
201	$_dispatcher dispatch $this !ycutplane \
202	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
203
204	# Z-Cutplane event
205	$_dispatcher register !zcutplane
206	$_dispatcher dispatch $this !zcutplane \
207	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
208
209	#
210	# Populate parser with commands handle incoming requests
211	#
212	$_parser alias image [itcl::code $this ReceiveImage]
213	$_parser alias legend [itcl::code $this ReceiveLegend]
214	$_parser alias dataset [itcl::code $this ReceiveDataset]
215
216	# Initialize the view to some default parameters.
217	array set _view {
218	-ortho 0
219	-qw 0.853553
220	-qx -0.353553
221	-qy 0.353553
222	-qz 0.146447
223	-xpan 0
224	-ypan 0
225	-zoom 1.0
226	}
227	set _arcball [blt::arcball create 100 100]
228	$_arcball quaternion [ViewToQuaternion]
229
230	array set _settings {
231	-axesvisible 1
232	-axislabelsvisible 1
233	-axisminorticks 1
234	-axismode "static"
235	-cutplaneedges 0
236	-cutplanelighting 1
237	-cutplaneopacity 100
238	-cutplanesvisible 0
239	-cutplanewireframe 0
240	-legendvisible 1
241	-streamlineslighting 1
242	-streamlinesmode lines
243	-streamlinesnumseeds 200
244	-streamlinesopacity 100
245	-streamlineslength 70
246	-streamlinesseedsvisible 0
247	-streamlinesvisible 1
248	-surfaceedges 0
249	-surfacelighting 1
250	-surfaceopacity 40
251	-surfacevisible 1
252	-surfacewireframe 0
253	-xcutplaneposition 50
254	-xcutplanevisible 1
255	-xgrid 0
256	-ycutplaneposition 50
257	-ycutplanevisible 1
258	-ygrid 0
259	-zcutplaneposition 50
260	-zcutplanevisible 1
261	-zgrid 0
262	}
263
264	itk_component add view {
265	canvas $itk_component(plotarea).view \
266	-highlightthickness 0 -borderwidth 0
267	} {
268	usual
269	ignore -highlightthickness -borderwidth -background
270	}
271
272	itk_component add fieldmenu {
273	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
274	-tearoff 0
275	} {
276	usual
277	ignore -background -foreground -relief -tearoff
278	}
279	set c $itk_component(view)
280	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
281	bind $c <Control-F1> [itcl::code $this ToggleConsole]
282
283	# Fix the scrollregion in case we go off screen
284	$c configure -scrollregion [$c bbox all]
285
286	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
287	set _map(cwidth) -1
288	set _map(cheight) -1
289	set _map(zoom) 1.0
290	set _map(original) ""
291
292	set f [$itk_component(main) component controls]
293	itk_component add reset {
294	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon reset-view] \
297	-command [itcl::code $this Zoom reset]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(reset) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
304
305	itk_component add zoomin {
306	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-in] \
309	-command [itcl::code $this Zoom in]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomin) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
316
317	itk_component add zoomout {
318	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
319	-highlightthickness 0 \
320	-image [Rappture::icon zoom-out] \
321	-command [itcl::code $this Zoom out]
322	} {
323	usual
324	ignore -highlightthickness
325	}
326	pack $itk_component(zoomout) -side top -padx 2 -pady 2
327	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
328
329	itk_component add surface {
330	Rappture::PushButton $f.surface \
331	-onimage [Rappture::icon volume-on] \
332	-offimage [Rappture::icon volume-off] \
333	-variable [itcl::scope _settings(-surfacevisible)] \
334	-command [itcl::code $this AdjustSetting -surfacevisible]
335	}
336	$itk_component(surface) select
337	Rappture::Tooltip::for $itk_component(surface) \
338	"Show/Hide the boundary surface"
339	pack $itk_component(surface) -padx 2 -pady 2
340
341	itk_component add streamlines {
342	Rappture::PushButton $f.streamlines \
343	-onimage [Rappture::icon streamlines-on] \
344	-offimage [Rappture::icon streamlines-off] \
345	-variable [itcl::scope _settings(-streamlinesvisible)] \
346	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
347	}
348	$itk_component(streamlines) select
349	Rappture::Tooltip::for $itk_component(streamlines) \
350	"Show/Hide the streamlines"
351	pack $itk_component(streamlines) -padx 2 -pady 2
352
353	itk_component add cutplane {
354	Rappture::PushButton $f.cutplane \
355	-onimage [Rappture::icon cutbutton] \
356	-offimage [Rappture::icon cutbutton] \
357	-variable [itcl::scope _settings(-cutplanesvisible)] \
358	-command [itcl::code $this AdjustSetting -cutplanesvisible]
359	}
360	Rappture::Tooltip::for $itk_component(cutplane) \
361	"Show/Hide the cutplanes"
362	pack $itk_component(cutplane) -padx 2 -pady 2
363
364	if { [catch {
365	BuildSurfaceTab
366	BuildStreamsTab
367	BuildCutplanesTab
368	BuildAxisTab
369	BuildCameraTab
370	} errs] != 0 } {
371	puts stderr errs=$errs
372	}
373	# Legend
374
375	set _image(legend) [image create photo]
376	itk_component add legend {
377	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
378	} {
379	usual
380	ignore -highlightthickness
381	rename -background -plotbackground plotBackground Background
382	}
383
384	# Hack around the Tk panewindow. The problem is that the requested
385	# size of the 3d view isn't set until an image is retrieved from
386	# the server. So the panewindow uses the tiny size.
387	set w 10000
388	pack forget $itk_component(view)
389	blt::table $itk_component(plotarea) \
390	0,0 $itk_component(view) -fill both -reqwidth $w
391	blt::table configure $itk_component(plotarea) c1 -resize none
392
393	# Bindings for rotation via mouse
394	bind $itk_component(view) <ButtonPress-1> \
395	[itcl::code $this Rotate click %x %y]
396	bind $itk_component(view) <B1-Motion> \
397	[itcl::code $this Rotate drag %x %y]
398	bind $itk_component(view) <ButtonRelease-1> \
399	[itcl::code $this Rotate release %x %y]
400
401	# Bindings for panning via mouse
402	bind $itk_component(view) <ButtonPress-2> \
403	[itcl::code $this Pan click %x %y]
404	bind $itk_component(view) <B2-Motion> \
405	[itcl::code $this Pan drag %x %y]
406	bind $itk_component(view) <ButtonRelease-2> \
407	[itcl::code $this Pan release %x %y]
408
409	#bind $itk_component(view) <ButtonRelease-3> \
410	# [itcl::code $this Pick %x %y]
411
412	# Bindings for panning via keyboard
413	bind $itk_component(view) <KeyPress-Left> \
414	[itcl::code $this Pan set -10 0]
415	bind $itk_component(view) <KeyPress-Right> \
416	[itcl::code $this Pan set 10 0]
417	bind $itk_component(view) <KeyPress-Up> \
418	[itcl::code $this Pan set 0 -10]
419	bind $itk_component(view) <KeyPress-Down> \
420	[itcl::code $this Pan set 0 10]
421	bind $itk_component(view) <Shift-KeyPress-Left> \
422	[itcl::code $this Pan set -2 0]
423	bind $itk_component(view) <Shift-KeyPress-Right> \
424	[itcl::code $this Pan set 2 0]
425	bind $itk_component(view) <Shift-KeyPress-Up> \
426	[itcl::code $this Pan set 0 -2]
427	bind $itk_component(view) <Shift-KeyPress-Down> \
428	[itcl::code $this Pan set 0 2]
429
430	# Bindings for zoom via keyboard
431	bind $itk_component(view) <KeyPress-Prior> \
432	[itcl::code $this Zoom out]
433	bind $itk_component(view) <KeyPress-Next> \
434	[itcl::code $this Zoom in]
435
436	bind $itk_component(view) <Enter> "focus $itk_component(view)"
437
438	if {[string equal "x11" [tk windowingsystem]]} {
439	# Bindings for zoom via mouse
440	bind $itk_component(view) <4> [itcl::code $this Zoom out]
441	bind $itk_component(view) <5> [itcl::code $this Zoom in]
442	}
443
444	set _image(download) [image create photo]
445
446	eval itk_initialize $args
447	Connect
448	}
449
450	# ----------------------------------------------------------------------
451	# DESTRUCTOR
452	# ----------------------------------------------------------------------
453	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
454	Disconnect
455	image delete $_image(plot)
456	image delete $_image(download)
457	catch { blt::arcball destroy $_arcball }
458	}
459
460	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
461	if { $_width < 2 } {
462	set _width 500
463	}
464	if { $_height < 2 } {
465	set _height 500
466	}
467	set _start [clock clicks -milliseconds]
468	SendCmd "screen size $_width $_height"
469
470	set _legendPending 1
471	set _resizePending 0
472	}
473
474	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
475	SendCmd "camera orient [ViewToQuaternion]"
476	set _rotatePending 0
477	}
478
479	itcl::body Rappture::VtkStreamlinesViewer::DoRescale {} {
480	foreach dataset [CurrentDatasets -visible] {
481	SendCmd "streamlines length $_streamlinesLength $dataset"
482	}
483	set _rescalePending 0
484	}
485
486	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
487	foreach dataset [CurrentDatasets -visible] {
488	# This command works for either random or fmesh seeds
489	SendCmd "streamlines seed numpts $_numSeeds $dataset"
490	}
491	set _reseedPending 0
492	}
493
494	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
495	set _width $w
496	set _height $h
497	$_arcball resize $w $h
498	if { !$_resizePending } {
499	set _resizePending 1
500	$_dispatcher event -after 400 !resize
501	}
502	}
503
504	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRescale { length } {
505	set _streamlinesLength $length
506	if { !$_rescalePending } {
507	set _rescalePending 1
508	$_dispatcher event -after 600 !rescale
509	}
510	}
511
512	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
513	set _numSeeds $numPoints
514	if { !$_reseedPending } {
515	set _reseedPending 1
516	$_dispatcher event -after 600 !reseed
517	}
518	}
519
520	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
521	QuaternionToView $q
522	if { !$_rotatePending } {
523	set _rotatePending 1
524	$_dispatcher event -after 100 !rotate
525	}
526	}
527
528	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
529	if { !$_cutplanePending } {
530	set _cutplanePending 1
531	$_dispatcher event -after 100 !${axis}cutplane
532	}
533	}
534
535	# ----------------------------------------------------------------------
536	# USAGE: add <dataobj> ?<settings>?
537	#
538	# Clients use this to add a data object to the plot. The optional
539	# <settings> are used to configure the plot. Allowed settings are
540	# -color, -brightness, -width, -linestyle, and -raise.
541	# ----------------------------------------------------------------------
542	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
543	array set params {
544	-color auto
545	-width 1
546	-linestyle solid
547	-brightness 0
548	-raise 0
549	-description ""
550	-param ""
551	-type ""
552	}
553	array set params $settings
554
555	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
556	# can't handle -autocolors yet
557	set params(-color) black
558	}
559	set pos [lsearch -exact $_dlist $dataobj]
560	if {$pos < 0} {
561	lappend _dlist $dataobj
562	}
563	set _obj2ovride($dataobj-color) $params(-color)
564	set _obj2ovride($dataobj-width) $params(-width)
565	set _obj2ovride($dataobj-raise) $params(-raise)
566	$_dispatcher event -idle !rebuild
567	}
568
569
570	# ----------------------------------------------------------------------
571	# USAGE: delete ?<dataobj1> <dataobj2> ...?
572	#
573	# Clients use this to delete a dataobj from the plot. If no dataobjs
574	# are specified, then all dataobjs are deleted. No data objects are
575	# deleted. They are only removed from the display list.
576	# ----------------------------------------------------------------------
577	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
578	if { [llength $args] == 0} {
579	set args $_dlist
580	}
581	# Delete all specified dataobjs
582	set changed 0
583	foreach dataobj $args {
584	set pos [lsearch -exact $_dlist $dataobj]
585	if { $pos < 0 } {
586	continue; # Don't know anything about it.
587	}
588	# Remove it from the dataobj list.
589	set _dlist [lreplace $_dlist $pos $pos]
590	array unset _obj2ovride $dataobj-*
591	array unset _settings $dataobj-*
592	set changed 1
593	}
594	# If anything changed, then rebuild the plot
595	if { $changed } {
596	$_dispatcher event -idle !rebuild
597	}
598	}
599
600	# ----------------------------------------------------------------------
601	# USAGE: get ?-objects?
602	# USAGE: get ?-visible?
603	# USAGE: get ?-image view?
604	#
605	# Clients use this to query the list of objects being plotted, in
606	# order from bottom to top of this result. The optional "-image"
607	# flag can also request the internal images being shown.
608	# ----------------------------------------------------------------------
609	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
610	if {[llength $args] == 0} {
611	set args "-objects"
612	}
613
614	set op [lindex $args 0]
615	switch -- $op {
616	"-objects" {
617	# put the dataobj list in order according to -raise options
618	set dlist {}
619	foreach dataobj $_dlist {
620	if { ![IsValidObject $dataobj] } {
621	continue
622	}
623	if {[info exists _obj2ovride($dataobj-raise)] &&
624	$_obj2ovride($dataobj-raise)} {
625	set dlist [linsert $dlist 0 $dataobj]
626	} else {
627	lappend dlist $dataobj
628	}
629	}
630	return $dlist
631	}
632	"-visible" {
633	set dlist {}
634	foreach dataobj $_dlist {
635	if { ![IsValidObject $dataobj] } {
636	continue
637	}
638	if { ![info exists _obj2ovride($dataobj-raise)] } {
639	# No setting indicates that the object isn't visible.
640	continue
641	}
642	# Otherwise use the -raise parameter to put the object to
643	# the front of the list.
644	if { $_obj2ovride($dataobj-raise) } {
645	set dlist [linsert $dlist 0 $dataobj]
646	} else {
647	lappend dlist $dataobj
648	}
649	}
650	return $dlist
651	}
652	"-image" {
653	if {[llength $args] != 2} {
654	error "wrong # args: should be \"get -image view\""
655	}
656	switch -- [lindex $args end] {
657	view {
658	return $_image(plot)
659	}
660	default {
661	error "bad image name \"[lindex $args end]\": should be view"
662	}
663	}
664	}
665	default {
666	error "bad option \"$op\": should be -objects, -visible or -image"
667	}
668	}
669	}
670
671	# ----------------------------------------------------------------------
672	# USAGE: scale ?<data1> <data2> ...?
673	#
674	# Sets the default limits for the overall plot according to the
675	# limits of the data for all of the given <data> objects. This
676	# accounts for all objects--even those not showing on the screen.
677	# Because of this, the limits are appropriate for all objects as
678	# the user scans through data in the ResultSet viewer.
679	# ----------------------------------------------------------------------
680	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
681	foreach dataobj $args {
682	foreach axis { x y z } {
683	set lim [$dataobj limits $axis]
684	if { ![info exists _limits($axis)] } {
685	set _limits($axis) $lim
686	continue
687	}
688	foreach {min max} $lim break
689	foreach {amin amax} $_limits($axis) break
690	if { $amin > $min } {
691	set amin $min
692	}
693	if { $amax < $max } {
694	set amax $max
695	}
696	set _limits($axis) [list $amin $amax]
697	}
698	foreach { fname lim } [$dataobj fieldlimits] {
699	if { ![info exists _limits($fname)] } {
700	set _limits($fname) $lim
701	continue
702	}
703	foreach {min max} $lim break
704	foreach {fmin fmax} $_limits($fname) break
705	if { $fmin > $min } {
706	set fmin $min
707	}
708	if { $fmax < $max } {
709	set fmax $max
710	}
711	set _limits($fname) [list $fmin $fmax]
712	}
713	}
714	}
715
716	# ----------------------------------------------------------------------
717	# USAGE: download coming
718	# USAGE: download controls <downloadCommand>
719	# USAGE: download now
720	#
721	# Clients use this method to create a downloadable representation
722	# of the plot. Returns a list of the form {ext string}, where
723	# "ext" is the file extension (indicating the type of data) and
724	# "string" is the data itself.
725	# ----------------------------------------------------------------------
726	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
727	switch $option {
728	coming {
729	if {[catch {
730	blt::winop snap $itk_component(plotarea) $_image(download)
731	}]} {
732	$_image(download) configure -width 1 -height 1
733	$_image(download) put #000000
734	}
735	}
736	controls {
737	set popup .vtkviewerdownload
738	if { ![winfo exists .vtkviewerdownload] } {
739	set inner [BuildDownloadPopup $popup [lindex $args 0]]
740	} else {
741	set inner [$popup component inner]
742	}
743	set _downloadPopup(image_controls) $inner.image_frame
744	set num [llength [get]]
745	set num [expr {($num == 1) ? "1 result" : "$num results"}]
746	set word [Rappture::filexfer::label downloadWord]
747	$inner.summary configure -text "$word $num in the following format:"
748	update idletasks ;# Fix initial sizes
749	return $popup
750	}
751	now {
752	set popup .vtkviewerdownload
753	if {[winfo exists .vtkviewerdownload]} {
754	$popup deactivate
755	}
756	switch -- $_downloadPopup(format) {
757	"image" {
758	return [$this GetImage [lindex $args 0]]
759	}
760	"vtk" {
761	return [$this GetVtkData [lindex $args 0]]
762	}
763	}
764	return ""
765	}
766	default {
767	error "bad option \"$option\": should be coming, controls, now"
768	}
769	}
770	}
771
772	# ----------------------------------------------------------------------
773	# USAGE: Connect ?<host:port>,<host:port>...?
774	#
775	# Clients use this method to establish a connection to a new
776	# server, or to reestablish a connection to the previous server.
777	# Any existing connection is automatically closed.
778	# ----------------------------------------------------------------------
779	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
780	set _hosts [GetServerList "vtkvis"]
781	if { "" == $_hosts } {
782	return 0
783	}
784	set _reset 1
785	set result [VisViewer::Connect $_hosts]
786	if { $result } {
787	if { $_reportClientInfo } {
788	# Tell the server the viewer, hub, user and session.
789	# Do this immediately on connect before buffering any commands
790	global env
791
792	set info {}
793	set user "???"
794	if { [info exists env(USER)] } {
795	set user $env(USER)
796	}
797	set session "???"
798	if { [info exists env(SESSION)] } {
799	set session $env(SESSION)
800	}
801	lappend info "version" "$Rappture::version"
802	lappend info "build" "$Rappture::build"
803	lappend info "svnurl" "$Rappture::svnurl"
804	lappend info "installdir" "$Rappture::installdir"
805	lappend info "hub" [exec hostname]
806	lappend info "client" "vtkstreamlinesviewer"
807	lappend info "user" $user
808	lappend info "session" $session
809	SendCmd "clientinfo [list $info]"
810	}
811
812	set w [winfo width $itk_component(view)]
813	set h [winfo height $itk_component(view)]
814	EventuallyResize $w $h
815	}
816	return $result
817	}
818
819	#
820	# isconnected --
821	#
822	# Indicates if we are currently connected to the visualization server.
823	#
824	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
825	return [VisViewer::IsConnected]
826	}
827
828	#
829	# disconnect --
830	#
831	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
832	Disconnect
833	set _reset 1
834	}
835
836	#
837	# Disconnect --
838	#
839	# Clients use this method to disconnect from the current rendering server.
840	#
841	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
842	VisViewer::Disconnect
843
844	$_dispatcher cancel !rebuild
845	$_dispatcher cancel !resize
846	$_dispatcher cancel !reseed
847	$_dispatcher cancel !rotate
848	$_dispatcher cancel !xcutplane
849	$_dispatcher cancel !ycutplane
850	$_dispatcher cancel !zcutplane
851	$_dispatcher cancel !legend
852	# disconnected -- no more data sitting on server
853	array unset _datasets
854	array unset _colormaps
855	array unset _seeds
856	}
857
858	# ----------------------------------------------------------------------
859	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
860	#
861	# Invoked automatically whenever the "image" command comes in from
862	# the rendering server. Indicates that binary image data with the
863	# specified <size> will follow.
864	# ----------------------------------------------------------------------
865	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
866	array set info {
867	-token "???"
868	-bytes 0
869	-type image
870	}
871	array set info $args
872	set bytes [ReceiveBytes $info(-bytes)]
873	if { $info(-type) == "image" } {
874	if 0 {
875	set f [open "last.ppm" "w"]
876	fconfigure $f -encoding binary
877	puts -nonewline $f $bytes
878	close $f
879	}
880	$_image(plot) configure -data $bytes
881	set time [clock seconds]
882	set date [clock format $time]
883	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
884	if { $_start > 0 } {
885	set finish [clock clicks -milliseconds]
886	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
887	set _start 0
888	}
889	} elseif { $info(type) == "print" } {
890	set tag $this-print-$info(-token)
891	set _hardcopy($tag) $bytes
892	}
893	if { $_legendPending } {
894	RequestLegend
895	}
896	}
897
898	#
899	# ReceiveDataset --
900	#
901	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
902	if { ![isconnected] } {
903	return
904	}
905	set option [lindex $args 0]
906	switch -- $option {
907	"scalar" {
908	set option [lindex $args 1]
909	switch -- $option {
910	"world" {
911	foreach { x y z value tag } [lrange $args 2 end] break
912	}
913	"pixel" {
914	foreach { x y value tag } [lrange $args 2 end] break
915	}
916	}
917	}
918	"vector" {
919	set option [lindex $args 1]
920	switch -- $option {
921	"world" {
922	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
923	}
924	"pixel" {
925	foreach { x y vx vy vz tag } [lrange $args 2 end] break
926	}
927	}
928	}
929	"names" {
930	foreach { name } [lindex $args 1] {
931	#puts stderr "Dataset: $name"
932	}
933	}
934	default {
935	error "unknown dataset option \"$option\" from server"
936	}
937	}
938	}
939
940	# ----------------------------------------------------------------------
941	# USAGE: Rebuild
942	#
943	# Called automatically whenever something changes that affects the
944	# data in the widget. Clears any existing data and rebuilds the
945	# widget to display new data.
946	# ----------------------------------------------------------------------
947	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
948	set w [winfo width $itk_component(view)]
949	set h [winfo height $itk_component(view)]
950	if { $w < 2 \|\| $h < 2 } {
951	update
952	$_dispatcher event -idle !rebuild
953	return
954	}
955
956	# Turn on buffering of commands to the server. We don't want to
957	# be preempted by a server disconnect/reconnect (which automatically
958	# generates a new call to Rebuild).
959	StartBufferingCommands
960	set _legendPending 1
961
962	set _first ""
963	if { $_reset } {
964	set _width $w
965	set _height $h
966	$_arcball resize $w $h
967	DoResize
968	InitSettings -xgrid -ygrid -zgrid -axismode \
969	-axesvisible -axislabelsvisible -axisminorticks
970	# This "imgflush" is to force an image returned before vtkvis starts
971	# reading a (big) dataset. This will display an empty plot with axes
972	# at the correct image size.
973	SendCmd "imgflush"
974	}
975
976	set _first ""
977	SendCmd "dataset visible 0"
978	foreach dataobj [get -objects] {
979	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
980	set _first $dataobj
981	}
982	foreach comp [$dataobj components] {
983	set tag $dataobj-$comp
984	if { ![info exists _datasets($tag)] } {
985	set bytes [$dataobj vtkdata $comp]
986	set length [string length $bytes]
987	if 0 {
988	set f [open /tmp/vtkstreamlines.vtk "w"]
989	fconfigure $f -translation binary -encoding binary
990	puts -nonewline $f $bytes
991	close $f
992	}
993	if { $_reportClientInfo } {
994	set info {}
995	lappend info "tool_id" [$dataobj hints toolid]
996	lappend info "tool_name" [$dataobj hints toolname]
997	lappend info "tool_title" [$dataobj hints tooltitle]
998	lappend info "tool_command" [$dataobj hints toolcommand]
999	lappend info "tool_revision" [$dataobj hints toolrevision]
1000	lappend info "dataset_label" [$dataobj hints label]
1001	lappend info "dataset_size" $length
1002	lappend info "dataset_tag" $tag
1003	SendCmd "clientinfo [list $info]"
1004	}
1005	SendCmd "dataset add $tag data follows $length"
1006	SendData $bytes
1007	set _datasets($tag) 1
1008	SetObjectStyle $dataobj $comp
1009	}
1010	if { [info exists _obj2ovride($dataobj-raise)] } {
1011	SendCmd "dataset visible 1 $tag"
1012	}
1013	}
1014	}
1015	if {"" != $_first} {
1016	foreach axis { x y z } {
1017	set label [$_first hints ${axis}label]
1018	if { $label != "" } {
1019	SendCmd [list axis name $axis $label]
1020	}
1021	set units [$_first hints ${axis}units]
1022	if { $units != "" } {
1023	SendCmd [list axis units $axis $units]
1024	}
1025	}
1026	$itk_component(field) choices delete 0 end
1027	$itk_component(fieldmenu) delete 0 end
1028	array unset _fields
1029	set _curFldName ""
1030	set _curFldLabel ""
1031	foreach cname [$_first components] {
1032	foreach fname [$_first fieldnames $cname] {
1033	if { [info exists _fields($fname)] } {
1034	continue
1035	}
1036	foreach { label units components } \
1037	[$_first fieldinfo $fname] break
1038	$itk_component(field) choices insert end "$fname" "$label"
1039	$itk_component(fieldmenu) add radiobutton -label "$label" \
1040	-value $label -variable [itcl::scope _curFldLabel] \
1041	-selectcolor red \
1042	-activebackground $itk_option(-plotbackground) \
1043	-activeforeground $itk_option(-plotforeground) \
1044	-font "Arial 8" \
1045	-command [itcl::code $this Combo invoke]
1046	set _fields($fname) [list $label $units $components]
1047	if { $_curFldName == "" && $components == 3 } {
1048	set _curFldName $fname
1049	set _curFldLabel $label
1050	}
1051	}
1052	}
1053	$itk_component(field) value $_curFldLabel
1054	}
1055
1056	if { $_reset } {
1057	InitSettings -streamlinesseedsvisible -streamlinesopacity \
1058	-streamlinesvisible \
1059	-streamlineslighting \
1060	-streamlinescolormap -field \
1061	-surfacevisible -surfaceedges -surfacelighting -surfaceopacity \
1062	-surfacewireframe \
1063	-cutplanesvisible \
1064	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1065	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1066
1067	# Reset the camera and other view parameters
1068	$_arcball quaternion [ViewToQuaternion]
1069	if {$_view(-ortho)} {
1070	SendCmd "camera mode ortho"
1071	} else {
1072	SendCmd "camera mode persp"
1073	}
1074	DoRotate
1075	PanCamera
1076	Zoom reset
1077	SendCmd "camera reset"
1078	set _reset 0
1079	}
1080	# Actually write the commands to the server socket. If it fails, we don't
1081	# care. We're finished here.
1082	blt::busy hold $itk_component(hull)
1083	StopBufferingCommands
1084	blt::busy release $itk_component(hull)
1085	}
1086
1087	# ----------------------------------------------------------------------
1088	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1089	#
1090	# Returns a list of server IDs for the current datasets being displayed. This
1091	# is normally a single ID, but it might be a list of IDs if the current data
1092	# object has multiple components.
1093	# ----------------------------------------------------------------------
1094	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1095	set flag [lindex $args 0]
1096	switch -- $flag {
1097	"-all" {
1098	if { [llength $args] > 1 } {
1099	error "CurrentDatasets: can't specify dataobj after \"-all\""
1100	}
1101	set dlist [get -objects]
1102	}
1103	"-visible" {
1104	if { [llength $args] > 1 } {
1105	set dlist {}
1106	set args [lrange $args 1 end]
1107	foreach dataobj $args {
1108	if { [info exists _obj2ovride($dataobj-raise)] } {
1109	lappend dlist $dataobj
1110	}
1111	}
1112	} else {
1113	set dlist [get -visible]
1114	}
1115	}
1116	default {
1117	set dlist $args
1118	}
1119	}
1120	set rlist ""
1121	foreach dataobj $dlist {
1122	foreach comp [$dataobj components] {
1123	set tag $dataobj-$comp
1124	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1125	lappend rlist $tag
1126	}
1127	}
1128	}
1129	return $rlist
1130	}
1131
1132	# ----------------------------------------------------------------------
1133	# USAGE: Zoom in
1134	# USAGE: Zoom out
1135	# USAGE: Zoom reset
1136	#
1137	# Called automatically when the user clicks on one of the zoom
1138	# controls for this widget. Changes the zoom for the current view.
1139	# ----------------------------------------------------------------------
1140	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1141	switch -- $option {
1142	"in" {
1143	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1144	SendCmd "camera zoom $_view(-zoom)"
1145	}
1146	"out" {
1147	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1148	SendCmd "camera zoom $_view(-zoom)"
1149	}
1150	"reset" {
1151	array set _view {
1152	-qw 0.853553
1153	-qx -0.353553
1154	-qy 0.353553
1155	-qz 0.146447
1156	-xpan 0
1157	-ypan 0
1158	-zoom 1.0
1159	}
1160	if { $_first != "" } {
1161	set location [$_first hints camera]
1162	if { $location != "" } {
1163	array set _view $location
1164	}
1165	}
1166	$_arcball quaternion [ViewToQuaternion]
1167	DoRotate
1168	SendCmd "camera reset"
1169	}
1170	}
1171	}
1172
1173	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1174	set x $_view(-xpan)
1175	set y $_view(-ypan)
1176	SendCmd "camera pan $x $y"
1177	}
1178
1179	# ----------------------------------------------------------------------
1180	# USAGE: Rotate click <x> <y>
1181	# USAGE: Rotate drag <x> <y>
1182	# USAGE: Rotate release <x> <y>
1183	#
1184	# Called automatically when the user clicks/drags/releases in the
1185	# plot area. Moves the plot according to the user's actions.
1186	# ----------------------------------------------------------------------
1187	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1188	switch -- $option {
1189	"click" {
1190	$itk_component(view) configure -cursor fleur
1191	set _click(x) $x
1192	set _click(y) $y
1193	}
1194	"drag" {
1195	if {[array size _click] == 0} {
1196	Rotate click $x $y
1197	} else {
1198	set w [winfo width $itk_component(view)]
1199	set h [winfo height $itk_component(view)]
1200	if {$w <= 0 \|\| $h <= 0} {
1201	return
1202	}
1203
1204	if {[catch {
1205	# this fails sometimes for no apparent reason
1206	set dx [expr {double($x-$_click(x))/$w}]
1207	set dy [expr {double($y-$_click(y))/$h}]
1208	}]} {
1209	return
1210	}
1211	if { $dx == 0 && $dy == 0 } {
1212	return
1213	}
1214	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1215	EventuallyRotate $q
1216	set _click(x) $x
1217	set _click(y) $y
1218	}
1219	}
1220	"release" {
1221	Rotate drag $x $y
1222	$itk_component(view) configure -cursor ""
1223	catch {unset _click}
1224	}
1225	default {
1226	error "bad option \"$option\": should be click, drag, release"
1227	}
1228	}
1229	}
1230
1231	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1232	foreach tag [CurrentDatasets -visible] {
1233	SendCmd "dataset getscalar pixel $x $y $tag"
1234	}
1235	}
1236
1237	# ----------------------------------------------------------------------
1238	# USAGE: $this Pan click x y
1239	# $this Pan drag x y
1240	# $this Pan release x y
1241	#
1242	# Called automatically when the user clicks on one of the zoom
1243	# controls for this widget. Changes the zoom for the current view.
1244	# ----------------------------------------------------------------------
1245	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1246	switch -- $option {
1247	"set" {
1248	set w [winfo width $itk_component(view)]
1249	set h [winfo height $itk_component(view)]
1250	set x [expr $x / double($w)]
1251	set y [expr $y / double($h)]
1252	set _view(-xpan) [expr $_view(-xpan) + $x]
1253	set _view(-ypan) [expr $_view(-ypan) + $y]
1254	PanCamera
1255	return
1256	}
1257	"click" {
1258	set _click(x) $x
1259	set _click(y) $y
1260	$itk_component(view) configure -cursor hand1
1261	}
1262	"drag" {
1263	if { ![info exists _click(x)] } {
1264	set _click(x) $x
1265	}
1266	if { ![info exists _click(y)] } {
1267	set _click(y) $y
1268	}
1269	set w [winfo width $itk_component(view)]
1270	set h [winfo height $itk_component(view)]
1271	set dx [expr ($_click(x) - $x)/double($w)]
1272	set dy [expr ($_click(y) - $y)/double($h)]
1273	set _click(x) $x
1274	set _click(y) $y
1275	set _view(-xpan) [expr $_view(-xpan) - $dx]
1276	set _view(-ypan) [expr $_view(-ypan) - $dy]
1277	PanCamera
1278	}
1279	"release" {
1280	Pan drag $x $y
1281	$itk_component(view) configure -cursor ""
1282	}
1283	default {
1284	error "unknown option \"$option\": should set, click, drag, or release"
1285	}
1286	}
1287	}
1288
1289	# ----------------------------------------------------------------------
1290	# USAGE: InitSettings <what> ?<value>?
1291	#
1292	# Used internally to update rendering settings whenever parameters
1293	# change in the popup settings panel. Sends the new settings off
1294	# to the back end.
1295	# ----------------------------------------------------------------------
1296	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1297	foreach spec $args {
1298	if { [info exists _settings($_first${spec})] } {
1299	# Reset global setting with dataobj specific setting
1300	set _settings($spec) $_settings($_first${spec})
1301	}
1302	AdjustSetting $spec
1303	}
1304	}
1305
1306	#
1307	# AdjustSetting --
1308	#
1309	# Changes/updates a specific setting in the widget. There are
1310	# usually user-setable option. Commands are sent to the render
1311	# server.
1312	#
1313	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1314	if { ![isconnected] } {
1315	return
1316	}
1317	switch -- $what {
1318	"-axesvisible" {
1319	set bool $_settings($what)
1320	SendCmd "axis visible all $bool"
1321	}
1322	"-axislabelsvisible" {
1323	set bool $_settings($what)
1324	SendCmd "axis labels all $bool"
1325	}
1326	"-axisminorticks" {
1327	set bool $_settings($what)
1328	SendCmd "axis minticks all $bool"
1329	}
1330	"-axismode" {
1331	set mode [$itk_component(axismode) value]
1332	set mode [$itk_component(axismode) translate $mode]
1333	set _settings($what) $mode
1334	SendCmd "axis flymode $mode"
1335	}
1336	"-cutplaneedges" {
1337	set bool $_settings($what)
1338	SendCmd "cutplane edges $bool"
1339	}
1340	"-cutplanesvisible" {
1341	set bool $_settings($what)
1342	SendCmd "cutplane visible $bool"
1343	if { $bool } {
1344	Rappture::Tooltip::for $itk_component(cutplane) \
1345	"Hide the cutplanes"
1346	} else {
1347	Rappture::Tooltip::for $itk_component(cutplane) \
1348	"Show the cutplanes"
1349	}
1350	}
1351	"-cutplanewireframe" {
1352	set bool $_settings($what)
1353	SendCmd "cutplane wireframe $bool"
1354	}
1355	"-cutplanelighting" {
1356	set bool $_settings($what)
1357	SendCmd "cutplane lighting $bool"
1358	}
1359	"-cutplaneopacity" {
1360	set val $_settings($what)
1361	set sval [expr { 0.01 * double($val) }]
1362	SendCmd "cutplane opacity $sval"
1363	}
1364	"-field" {
1365	set label [$itk_component(field) value]
1366	set fname [$itk_component(field) translate $label]
1367	set _settings($what) $fname
1368	if { [info exists _fields($fname)] } {
1369	foreach { label units components } $_fields($fname) break
1370	if { $components > 1 } {
1371	set _colorMode vmag
1372	} else {
1373	set _colorMode scalar
1374	}
1375	set _curFldName $fname
1376	set _curFldLabel $label
1377	} else {
1378	puts stderr "unknown field \"$fname\""
1379	return
1380	}
1381	# Get the new limits because the field changed.
1382	if { ![info exists _limits($_curFldName)] } {
1383	SendCmd "dataset maprange all"
1384	} else {
1385	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1386	}
1387	SendCmd "streamlines colormode $_colorMode $_curFldName"
1388	SendCmd "cutplane colormode $_colorMode $_curFldName"
1389	DrawLegend
1390	}
1391	"-streamlinesseedsvisible" {
1392	set bool $_settings($what)
1393	SendCmd "streamlines seed visible $bool"
1394	}
1395	"-streamlinesnumseeds" {
1396	set density $_settings($what)
1397	EventuallyReseed $density
1398	}
1399	"-streamlinesvisible" {
1400	set bool $_settings($what)
1401	SendCmd "streamlines visible $bool"
1402	if { $bool } {
1403	Rappture::Tooltip::for $itk_component(streamlines) \
1404	"Hide the streamlines"
1405	} else {
1406	Rappture::Tooltip::for $itk_component(streamlines) \
1407	"Show the streamlines"
1408	}
1409	}
1410	"-streamlinesmode" {
1411	set mode [$itk_component(streammode) value]
1412	set _settings($what) $mode
1413	switch -- $mode {
1414	"lines" {
1415	SendCmd "streamlines lines"
1416	}
1417	"ribbons" {
1418	SendCmd "streamlines ribbons 3 0"
1419	}
1420	"tubes" {
1421	SendCmd "streamlines tubes 5 3"
1422	}
1423	}
1424	}
1425	"-streamlinescolormap" {
1426	set colormap [$itk_component(colormap) value]
1427	set _settings($what) $colormap
1428	SetCurrentColormap $colormap
1429	set _legendPending 1
1430	}
1431	"-streamlinesopacity" {
1432	set val $_settings($what)
1433	set sval [expr { 0.01 * double($val) }]
1434	SendCmd "streamlines opacity $sval"
1435	}
1436	"-streamlineslength" {
1437	set val $_settings($what)
1438	set sval [expr { (0.01 * double($val)) / 0.7 }]
1439	foreach axis {x y z} {
1440	foreach {min max} $_limits($axis) break
1441	set ${axis}len [expr double($max) - double($min)]
1442	}
1443	set length [expr { $sval * ($xlen + $ylen + $zlen) } ]
1444	EventuallyRescale $length
1445	}
1446	"-streamlineslighting" {
1447	set bool $_settings($what)
1448	SendCmd "streamlines lighting $bool"
1449	}
1450	"-surfaceopacity" {
1451	set val $_settings($what)
1452	set sval [expr { 0.01 * double($val) }]
1453	SendCmd "polydata opacity $sval"
1454	}
1455	"-surfacewireframe" {
1456	set bool $_settings($what)
1457	SendCmd "polydata wireframe $bool"
1458	}
1459	"-surfacevisible" {
1460	set bool $_settings($what)
1461	SendCmd "polydata visible $bool"
1462	if { $bool } {
1463	Rappture::Tooltip::for $itk_component(surface) \
1464	"Hide the boundary surface"
1465	} else {
1466	Rappture::Tooltip::for $itk_component(surface) \
1467	"Show the boundary surface"
1468	}
1469	}
1470	"-surfacelighting" {
1471	set bool $_settings($what)
1472	SendCmd "polydata lighting $bool"
1473	}
1474	"-surfaceedges" {
1475	set bool $_settings($what)
1476	SendCmd "polydata edges $bool"
1477	}
1478	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1479	set axis [string range $what 1 1]
1480	set bool $_settings($what)
1481	if { $bool } {
1482	$itk_component(${axis}CutScale) configure -state normal \
1483	-troughcolor white
1484	} else {
1485	$itk_component(${axis}CutScale) configure -state disabled \
1486	-troughcolor grey82
1487	}
1488	SendCmd "cutplane axis $axis $bool"
1489	}
1490	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1491	set axis [string range $what 1 1]
1492	set pos [expr $_settings($what) * 0.01]
1493	SendCmd "cutplane slice ${axis} ${pos}"
1494	set _cutplanePending 0
1495	}
1496	"-xgrid" - "-ygrid" - "-zgrid" {
1497	set axis [string range $what 1 1]
1498	set bool $_settings($what)
1499	SendCmd "axis grid $axis $bool"
1500	}
1501	default {
1502	error "don't know how to fix $what"
1503	}
1504	}
1505	}
1506
1507	#
1508	# RequestLegend --
1509	#
1510	# Request a new legend from the server. The size of the legend
1511	# is determined from the height of the canvas. It will be rotated
1512	# to be vertical when drawn.
1513	#
1514	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1515	set font "Arial 8"
1516	set lineht [font metrics $font -linespace]
1517	set w 12
1518	set h [expr {$_height - 3 * ($lineht + 2)}]
1519	if { $h < 1 } {
1520	return
1521	}
1522	# Set the legend on the first dataset.
1523	if { $_currentColormap != "" } {
1524	set cmap $_currentColormap
1525	if { ![info exists _colormaps($cmap)] } {
1526	BuildColormap $cmap
1527	set _colormaps($cmap) 1
1528	}
1529	#SendCmd "legend $cmap $_colorMode $_curFldName {} $w $h 0"
1530	SendCmd "legend2 $cmap $w $h"
1531	}
1532	}
1533
1534	#
1535	# SetCurrentColormap --
1536	#
1537	itcl::body Rappture::VtkStreamlinesViewer::SetCurrentColormap { name } {
1538	# Keep track of the colormaps that we build.
1539	if { ![info exists _colormaps($name)] } {
1540	BuildColormap $name
1541	set _colormaps($name) 1
1542	}
1543	set _currentColormap $name
1544	SendCmd "streamlines colormap $_currentColormap"
1545	SendCmd "cutplane colormap $_currentColormap"
1546	}
1547
1548	#
1549	# BuildColormap --
1550	#
1551	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name } {
1552	set cmap [ColorsToColormap $name]
1553	if { [llength $cmap] == 0 } {
1554	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1555	}
1556	set amap "0.0 1.0 1.0 1.0"
1557	SendCmd "colormap add $name { $cmap } { $amap }"
1558	}
1559
1560	# ----------------------------------------------------------------------
1561	# CONFIGURATION OPTION: -plotbackground
1562	# ----------------------------------------------------------------------
1563	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1564	if { [isconnected] } {
1565	set rgb [Color2RGB $itk_option(-plotbackground)]
1566	SendCmd "screen bgcolor $rgb"
1567	}
1568	}
1569
1570	# ----------------------------------------------------------------------
1571	# CONFIGURATION OPTION: -plotforeground
1572	# ----------------------------------------------------------------------
1573	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1574	if { [isconnected] } {
1575	set rgb [Color2RGB $itk_option(-plotforeground)]
1576	SendCmd "axis color all $rgb"
1577	SendCmd "outline color $rgb"
1578	SendCmd "cutplane color $rgb"
1579	}
1580	}
1581
1582	itcl::body Rappture::VtkStreamlinesViewer::BuildSurfaceTab {} {
1583
1584	set fg [option get $itk_component(hull) font Font]
1585	#set bfg [option get $itk_component(hull) boldFont Font]
1586
1587	set inner [$itk_component(main) insert end \
1588	-title "Boundary Surface Settings" \
1589	-icon [Rappture::icon volume-on]]
1590	$inner configure -borderwidth 4
1591
1592	checkbutton $inner.surface \
1593	-text "Show Surface" \
1594	-variable [itcl::scope _settings(-surfacevisible)] \
1595	-command [itcl::code $this AdjustSetting -surfacevisible] \
1596	-font "Arial 9"
1597
1598	checkbutton $inner.wireframe \
1599	-text "Show Wireframe" \
1600	-variable [itcl::scope _settings(-surfacewireframe)] \
1601	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1602	-font "Arial 9"
1603
1604	checkbutton $inner.lighting \
1605	-text "Enable Lighting" \
1606	-variable [itcl::scope _settings(-surfacelighting)] \
1607	-command [itcl::code $this AdjustSetting -surfacelighting] \
1608	-font "Arial 9"
1609
1610	checkbutton $inner.edges \
1611	-text "Show Edges" \
1612	-variable [itcl::scope _settings(-surfaceedges)] \
1613	-command [itcl::code $this AdjustSetting -surfaceedges] \
1614	-font "Arial 9"
1615
1616	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1617	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1618	-variable [itcl::scope _settings(-surfaceopacity)] \
1619	-width 10 \
1620	-showvalue off \
1621	-command [itcl::code $this AdjustSetting -surfaceopacity]
1622
1623	blt::table $inner \
1624	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1625	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1626	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1627	3,0 $inner.opacity_l -anchor w -pady 2 \
1628	3,1 $inner.opacity -fill x -pady 2
1629
1630	blt::table configure $inner r* c* -resize none
1631	blt::table configure $inner r4 c1 -resize expand
1632	}
1633
1634	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1635
1636	set fg [option get $itk_component(hull) font Font]
1637	#set bfg [option get $itk_component(hull) boldFont Font]
1638
1639	set inner [$itk_component(main) insert end \
1640	-title "Streams Settings" \
1641	-icon [Rappture::icon streamlines-on]]
1642	$inner configure -borderwidth 4
1643
1644	checkbutton $inner.streamlines \
1645	-text "Show Streamlines" \
1646	-variable [itcl::scope _settings(-streamlinesvisible)] \
1647	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
1648	-font "Arial 9"
1649
1650	checkbutton $inner.lighting \
1651	-text "Enable Lighting" \
1652	-variable [itcl::scope _settings(-streamlineslighting)] \
1653	-command [itcl::code $this AdjustSetting -streamlineslighting] \
1654	-font "Arial 9"
1655
1656	checkbutton $inner.seeds \
1657	-text "Show Seeds" \
1658	-variable [itcl::scope _settings(-streamlinesseedsvisible)] \
1659	-command [itcl::code $this AdjustSetting -streamlinesseedsvisible] \
1660	-font "Arial 9"
1661
1662	label $inner.mode_l -text "Mode" -font "Arial 9"
1663	itk_component add streammode {
1664	Rappture::Combobox $inner.mode -width 10 -editable 0
1665	}
1666	$inner.mode choices insert end \
1667	"lines" "lines" \
1668	"ribbons" "ribbons" \
1669	"tubes" "tubes"
1670	$itk_component(streammode) value $_settings(-streamlinesmode)
1671	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -streamlinesmode]
1672
1673	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1674	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1675	-variable [itcl::scope _settings(-streamlinesopacity)] \
1676	-width 10 \
1677	-showvalue off \
1678	-command [itcl::code $this AdjustSetting -streamlinesopacity]
1679
1680	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1681	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1682	-variable [itcl::scope _settings(-streamlinesnumseeds)] \
1683	-width 10 \
1684	-showvalue on \
1685	-command [itcl::code $this AdjustSetting -streamlinesnumseeds]
1686
1687	label $inner.scale_l -text "Length" -font "Arial 9"
1688	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1689	-variable [itcl::scope _settings(-streamlineslength)] \
1690	-width 10 \
1691	-showvalue off \
1692	-command [itcl::code $this AdjustSetting -streamlineslength]
1693
1694	label $inner.field_l -text "Color by" -font "Arial 9"
1695	itk_component add field {
1696	Rappture::Combobox $inner.field -width 10 -editable 0
1697	}
1698	bind $inner.field <<Value>> \
1699	[itcl::code $this AdjustSetting -field]
1700
1701	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1702	itk_component add colormap {
1703	Rappture::Combobox $inner.colormap -width 10 -editable 0
1704	}
1705	$inner.colormap choices insert end [GetColormapList]
1706
1707	$itk_component(colormap) value "BCGYR"
1708	bind $inner.colormap <<Value>> \
1709	[itcl::code $this AdjustSetting -streamlinescolormap]
1710
1711	blt::table $inner \
1712	0,0 $inner.field_l -anchor w -pady 2 \
1713	0,1 $inner.field -fill x -pady 2 \
1714	1,0 $inner.colormap_l -anchor w -pady 2 \
1715	1,1 $inner.colormap -fill x -pady 2 \
1716	2,0 $inner.mode_l -anchor w -pady 2 \
1717	2,1 $inner.mode -fill x -pady 2 \
1718	3,0 $inner.scale_l -anchor w -pady 2 \
1719	3,1 $inner.scale -fill x -pady 2 \
1720	4,0 $inner.opacity_l -anchor w -pady 2 \
1721	4,1 $inner.opacity -fill x -pady 2 \
1722	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1723	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1724	7,0 $inner.density_l -anchor w -pady 2 \
1725	7,1 $inner.density -fill x -pady 2 \
1726
1727	blt::table configure $inner r* c* -resize none
1728	blt::table configure $inner r8 c1 c2 -resize expand
1729	}
1730
1731	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1732
1733	set fg [option get $itk_component(hull) font Font]
1734	#set bfg [option get $itk_component(hull) boldFont Font]
1735
1736	set inner [$itk_component(main) insert end \
1737	-title "Axis Settings" \
1738	-icon [Rappture::icon axis2]]
1739	$inner configure -borderwidth 4
1740
1741	checkbutton $inner.visible \
1742	-text "Axes" \
1743	-variable [itcl::scope _settings(-axesvisible)] \
1744	-command [itcl::code $this AdjustSetting -axesvisible] \
1745	-font "Arial 9"
1746
1747	checkbutton $inner.labels \
1748	-text "Axis Labels" \
1749	-variable [itcl::scope _settings(-axislabelsvisible)] \
1750	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1751	-font "Arial 9"
1752	label $inner.grid_l -text "Grid" -font "Arial 9"
1753	checkbutton $inner.xgrid \
1754	-text "X" \
1755	-variable [itcl::scope _settings(-xgrid)] \
1756	-command [itcl::code $this AdjustSetting -xgrid] \
1757	-font "Arial 9"
1758	checkbutton $inner.ygrid \
1759	-text "Y" \
1760	-variable [itcl::scope _settings(-ygrid)] \
1761	-command [itcl::code $this AdjustSetting -ygrid] \
1762	-font "Arial 9"
1763	checkbutton $inner.zgrid \
1764	-text "Z" \
1765	-variable [itcl::scope _settings(-zgrid)] \
1766	-command [itcl::code $this AdjustSetting -zgrid] \
1767	-font "Arial 9"
1768	checkbutton $inner.minorticks \
1769	-text "Minor Ticks" \
1770	-variable [itcl::scope _settings(-axisminorticks)] \
1771	-command [itcl::code $this AdjustSetting -axisminorticks] \
1772	-font "Arial 9"
1773
1774	label $inner.mode_l -text "Mode" -font "Arial 9"
1775
1776	itk_component add axismode {
1777	Rappture::Combobox $inner.mode -width 10 -editable 0
1778	}
1779	$inner.mode choices insert end \
1780	"static_triad" "static" \
1781	"closest_triad" "closest" \
1782	"furthest_triad" "farthest" \
1783	"outer_edges" "outer"
1784	$itk_component(axismode) value $_settings(-axismode)
1785	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1786
1787	blt::table $inner \
1788	0,0 $inner.visible -anchor w -cspan 4 \
1789	1,0 $inner.labels -anchor w -cspan 4 \
1790	2,0 $inner.minorticks -anchor w -cspan 4 \
1791	4,0 $inner.grid_l -anchor w \
1792	4,1 $inner.xgrid -anchor w \
1793	4,2 $inner.ygrid -anchor w \
1794	4,3 $inner.zgrid -anchor w \
1795	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1796	5,1 $inner.mode -fill x -cspan 3
1797
1798	blt::table configure $inner r* c* -resize none
1799	blt::table configure $inner r7 c6 -resize expand
1800	blt::table configure $inner r3 -height 0.125i
1801	}
1802
1803	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1804	set inner [$itk_component(main) insert end \
1805	-title "Camera Settings" \
1806	-icon [Rappture::icon camera]]
1807	$inner configure -borderwidth 4
1808
1809	label $inner.view_l -text "view" -font "Arial 9"
1810	set f [frame $inner.view]
1811	foreach side { front back left right top bottom } {
1812	button $f.$side -image [Rappture::icon view$side] \
1813	-command [itcl::code $this SetOrientation $side]
1814	Rappture::Tooltip::for $f.$side "Change the view to $side"
1815	pack $f.$side -side left
1816	}
1817
1818	blt::table $inner \
1819	0,0 $inner.view_l -anchor e -pady 2 \
1820	0,1 $inner.view -anchor w -pady 2
1821	blt::table configure $inner r0 -resize none
1822
1823	set labels { qx qy qz qw xpan ypan zoom }
1824	set row 1
1825	foreach tag $labels {
1826	label $inner.${tag}label -text $tag -font "Arial 9"
1827	entry $inner.${tag} -font "Arial 9" -bg white \
1828	-textvariable [itcl::scope _view(-$tag)]
1829	bind $inner.${tag} <Return> \
1830	[itcl::code $this camera set -${tag}]
1831	bind $inner.${tag} <KP_Enter> \
1832	[itcl::code $this camera set -${tag}]
1833	blt::table $inner \
1834	$row,0 $inner.${tag}label -anchor e -pady 2 \
1835	$row,1 $inner.${tag} -anchor w -pady 2
1836	blt::table configure $inner r$row -resize none
1837	incr row
1838	}
1839	checkbutton $inner.ortho \
1840	-text "Orthographic Projection" \
1841	-variable [itcl::scope _view(-ortho)] \
1842	-command [itcl::code $this camera set -ortho] \
1843	-font "Arial 9"
1844	blt::table $inner \
1845	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1846	blt::table configure $inner r$row -resize none
1847	incr row
1848
1849	blt::table configure $inner c* -resize none
1850	blt::table configure $inner c2 -resize expand
1851	blt::table configure $inner r$row -resize expand
1852	}
1853
1854	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplanesTab {} {
1855
1856	set fg [option get $itk_component(hull) font Font]
1857
1858	set inner [$itk_component(main) insert end \
1859	-title "Cutplane Settings" \
1860	-icon [Rappture::icon cutbutton]]
1861
1862	$inner configure -borderwidth 4
1863
1864	checkbutton $inner.visible \
1865	-text "Show Cutplanes" \
1866	-variable [itcl::scope _settings(-cutplanesvisible)] \
1867	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1868	-font "Arial 9"
1869
1870	checkbutton $inner.wireframe \
1871	-text "Show Wireframe" \
1872	-variable [itcl::scope _settings(-cutplanewireframe)] \
1873	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1874	-font "Arial 9"
1875
1876	checkbutton $inner.lighting \
1877	-text "Enable Lighting" \
1878	-variable [itcl::scope _settings(-cutplanelighting)] \
1879	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1880	-font "Arial 9"
1881
1882	checkbutton $inner.edges \
1883	-text "Show Edges" \
1884	-variable [itcl::scope _settings(-cutplaneedges)] \
1885	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1886	-font "Arial 9"
1887
1888	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1889	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1890	-variable [itcl::scope _settings(-cutplaneopacity)] \
1891	-width 10 \
1892	-showvalue off \
1893	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1894	$inner.opacity set $_settings(-cutplaneopacity)
1895
1896	# X-value slicer...
1897	itk_component add xCutButton {
1898	Rappture::PushButton $inner.xbutton \
1899	-onimage [Rappture::icon x-cutplane-red] \
1900	-offimage [Rappture::icon x-cutplane-red] \
1901	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1902	-variable [itcl::scope _settings(-xcutplanevisible)]
1903	}
1904	Rappture::Tooltip::for $itk_component(xCutButton) \
1905	"Toggle the X-axis cutplane on/off"
1906	$itk_component(xCutButton) select
1907
1908	itk_component add xCutScale {
1909	::scale $inner.xval -from 100 -to 0 \
1910	-width 10 -orient vertical -showvalue 1 \
1911	-borderwidth 1 -highlightthickness 0 \
1912	-command [itcl::code $this EventuallySetCutplane x] \
1913	-variable [itcl::scope _settings(-xcutplaneposition)] \
1914	-foreground red3 -font "Arial 9 bold"
1915	} {
1916	usual
1917	ignore -borderwidth -highlightthickness -foreground -font
1918	}
1919	# Set the default cutplane value before disabling the scale.
1920	$itk_component(xCutScale) set 50
1921	$itk_component(xCutScale) configure -state disabled
1922	Rappture::Tooltip::for $itk_component(xCutScale) \
1923	"@[itcl::code $this Slice tooltip x]"
1924
1925	# Y-value slicer...
1926	itk_component add yCutButton {
1927	Rappture::PushButton $inner.ybutton \
1928	-onimage [Rappture::icon y-cutplane-green] \
1929	-offimage [Rappture::icon y-cutplane-green] \
1930	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1931	-variable [itcl::scope _settings(-ycutplanevisible)]
1932	}
1933	Rappture::Tooltip::for $itk_component(yCutButton) \
1934	"Toggle the Y-axis cutplane on/off"
1935	$itk_component(yCutButton) select
1936
1937	itk_component add yCutScale {
1938	::scale $inner.yval -from 100 -to 0 \
1939	-width 10 -orient vertical -showvalue 1 \
1940	-borderwidth 1 -highlightthickness 0 \
1941	-command [itcl::code $this EventuallySetCutplane y] \
1942	-variable [itcl::scope _settings(-ycutplaneposition)] \
1943	-foreground green3 -font "Arial 9 bold"
1944	} {
1945	usual
1946	ignore -borderwidth -highlightthickness -foreground -font
1947	}
1948	Rappture::Tooltip::for $itk_component(yCutScale) \
1949	"@[itcl::code $this Slice tooltip y]"
1950	# Set the default cutplane value before disabling the scale.
1951	$itk_component(yCutScale) set 50
1952	$itk_component(yCutScale) configure -state disabled
1953
1954	# Z-value slicer...
1955	itk_component add zCutButton {
1956	Rappture::PushButton $inner.zbutton \
1957	-onimage [Rappture::icon z-cutplane-blue] \
1958	-offimage [Rappture::icon z-cutplane-blue] \
1959	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1960	-variable [itcl::scope _settings(-zcutplanevisible)]
1961	}
1962	Rappture::Tooltip::for $itk_component(zCutButton) \
1963	"Toggle the Z-axis cutplane on/off"
1964	$itk_component(zCutButton) select
1965
1966	itk_component add zCutScale {
1967	::scale $inner.zval -from 100 -to 0 \
1968	-width 10 -orient vertical -showvalue 1 \
1969	-borderwidth 1 -highlightthickness 0 \
1970	-command [itcl::code $this EventuallySetCutplane z] \
1971	-variable [itcl::scope _settings(-zcutplaneposition)] \
1972	-foreground blue3 -font "Arial 9 bold"
1973	} {
1974	usual
1975	ignore -borderwidth -highlightthickness -foreground -font
1976	}
1977	$itk_component(zCutScale) set 50
1978	$itk_component(zCutScale) configure -state disabled
1979	Rappture::Tooltip::for $itk_component(zCutScale) \
1980	"@[itcl::code $this Slice tooltip z]"
1981
1982	blt::table $inner \
1983	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1984	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
1985	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
1986	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1987	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1988	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
1989	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
1990	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
1991	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
1992	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
1993	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
1994
1995	blt::table configure $inner r* c* -resize none
1996	blt::table configure $inner r7 c4 -resize expand
1997	}
1998
1999	#
2000	# camera --
2001	#
2002	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2003	switch -- $option {
2004	"show" {
2005	puts [array get _view]
2006	}
2007	"set" {
2008	set what [lindex $args 0]
2009	set x $_view($what)
2010	set code [catch { string is double $x } result]
2011	if { $code != 0 \|\| !$result } {
2012	return
2013	}
2014	switch -- $what {
2015	"-ortho" {
2016	if {$_view($what)} {
2017	SendCmd "camera mode ortho"
2018	} else {
2019	SendCmd "camera mode persp"
2020	}
2021	}
2022	"-xpan" - "-ypan" {
2023	PanCamera
2024	}
2025	"-qx" - "-qy" - "-qz" - "-qw" {
2026	set q [ViewToQuaternion]
2027	$_arcball quaternion $q
2028	EventuallyRotate $q
2029	}
2030	"-zoom" {
2031	SendCmd "camera zoom $_view($what)"
2032	}
2033	}
2034	}
2035	}
2036	}
2037
2038	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2039	set bytes ""
2040	foreach dataobj [get] {
2041	foreach comp [$dataobj components] {
2042	set tag $dataobj-$comp
2043	set contents [$dataobj vtkdata $comp]
2044	append bytes "$contents\n"
2045	}
2046	}
2047	return [list .vtk $bytes]
2048	}
2049
2050	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2051	if { [image width $_image(download)] > 0 &&
2052	[image height $_image(download)] > 0 } {
2053	set bytes [$_image(download) data -format "jpeg -quality 100"]
2054	set bytes [Rappture::encoding::decode -as b64 $bytes]
2055	return [list .jpg $bytes]
2056	}
2057	return ""
2058	}
2059
2060	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2061	Rappture::Balloon $popup \
2062	-title "[Rappture::filexfer::label downloadWord] as..."
2063	set inner [$popup component inner]
2064	label $inner.summary -text "" -anchor w
2065	radiobutton $inner.vtk_button -text "VTK data file" \
2066	-variable [itcl::scope _downloadPopup(format)] \
2067	-font "Helvetica 9 " \
2068	-value vtk
2069	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2070	radiobutton $inner.image_button -text "Image File" \
2071	-variable [itcl::scope _downloadPopup(format)] \
2072	-value image
2073	Rappture::Tooltip::for $inner.image_button \
2074	"Save as digital image."
2075
2076	button $inner.ok -text "Save" \
2077	-highlightthickness 0 -pady 2 -padx 3 \
2078	-command $command \
2079	-compound left \
2080	-image [Rappture::icon download]
2081
2082	button $inner.cancel -text "Cancel" \
2083	-highlightthickness 0 -pady 2 -padx 3 \
2084	-command [list $popup deactivate] \
2085	-compound left \
2086	-image [Rappture::icon cancel]
2087
2088	blt::table $inner \
2089	0,0 $inner.summary -cspan 2 \
2090	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2091	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2092	4,1 $inner.cancel -width .9i -fill y \
2093	4,0 $inner.ok -padx 2 -width .9i -fill y
2094	blt::table configure $inner r3 -height 4
2095	blt::table configure $inner r4 -pady 4
2096	raise $inner.image_button
2097	$inner.vtk_button invoke
2098	return $inner
2099	}
2100
2101	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2102	# Parse style string.
2103	set tag $dataobj-$comp
2104	array set style {
2105	-color BCGYR
2106	-constcolor white
2107	-edgecolor black
2108	-edges 0
2109	-lighting 1
2110	-linewidth 1.0
2111	-mode lines
2112	-numseeds 200
2113	-opacity 1.0
2114	-seeds 1
2115	-seedcolor white
2116	-streamlineslength 0.7
2117	-surfacecolor white
2118	-surfaceedgecolor black
2119	-surfaceedges 0
2120	-surfacelighting 1
2121	-surfaceopacity 0.4
2122	-surfacevisible 1
2123	-surfacewireframe 0
2124	-visible 1
2125	}
2126	array set style [$dataobj style $comp]
2127
2128	StartBufferingCommands
2129	SendCmd "streamlines add $tag"
2130	SendCmd "streamlines color [Color2RGB $style(-constcolor)] $tag"
2131	SendCmd "streamlines edges $style(-edges) $tag"
2132	SendCmd "streamlines linecolor [Color2RGB $style(-edgecolor)] $tag"
2133	SendCmd "streamlines linewidth $style(-linewidth) $tag"
2134	SendCmd "streamlines lighting $style(-lighting) $tag"
2135	SendCmd "streamlines opacity $style(-opacity) $tag"
2136	SendCmd "streamlines seed color [Color2RGB $style(-seedcolor)] $tag"
2137	SendCmd "streamlines seed visible $style(-seeds) $tag"
2138	SendCmd "streamlines visible $style(-visible) $tag"
2139	set seeds [$dataobj hints seeds]
2140	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2141	set length [string length $seeds]
2142	SendCmd "streamlines seed fmesh $style(-numseeds) data follows $length $tag"
2143	SendData $seeds
2144	set _seeds($dataobj) 1
2145	}
2146	set _settings(-streamlineslighting) $style(-lighting)
2147	$itk_component(streammode) value $style(-mode)
2148	AdjustSetting -streamlinesmode
2149	set _settings(-streamlinesnumseeds) $style(-numseeds)
2150	set _settings(-streamlinesopacity) [expr $style(-opacity) * 100.0]
2151	set _settings(-streamlineslength) [expr $style(-streamlineslength) * 100.0]
2152	set _settings(-streamlinesseedsvisible) $style(-seeds)
2153	set _settings(-streamlinesvisible) $style(-visible)
2154
2155	SendCmd "cutplane add $tag"
2156
2157	SendCmd "polydata add $tag"
2158	SendCmd "polydata color [Color2RGB $style(-surfacecolor)] $tag"
2159	SendCmd "polydata colormode constant {} $tag"
2160	SendCmd "polydata edges $style(-surfaceedges) $tag"
2161	SendCmd "polydata linecolor [Color2RGB $style(-surfaceedgecolor)] $tag"
2162	SendCmd "polydata lighting $style(-surfacelighting) $tag"
2163	SendCmd "polydata opacity $style(-surfaceopacity) $tag"
2164	SendCmd "polydata wireframe $style(-surfacewireframe) $tag"
2165	SendCmd "polydata visible $style(-surfacevisible) $tag"
2166	set _settings(-surfaceedges) $style(-surfaceedges)
2167	set _settings(-surfacelighting) $style(-surfacelighting)
2168	set _settings(-surfaceopacity) [expr $style(-surfaceopacity) * 100.0]
2169	set _settings(-surfacewireframe) $style(-surfacewireframe)
2170	set _settings(-surfacevisible) $style(-surfacevisible)
2171	StopBufferingCommands
2172	SetCurrentColormap $style(-color)
2173	$itk_component(colormap) value $style(-color)
2174	}
2175
2176	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2177	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2178	return 0
2179	}
2180	return 1
2181	}
2182
2183	# ----------------------------------------------------------------------
2184	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2185	#
2186	# Invoked automatically whenever the "legend" command comes in from
2187	# the rendering server. Indicates that binary image data with the
2188	# specified <size> will follow.
2189	# ----------------------------------------------------------------------
2190	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2191	set _legendPending 0
2192	set _title $title
2193	regsub {\(mag\)} $title "" _title
2194	if { [IsConnected] } {
2195	set bytes [ReceiveBytes $size]
2196	if { ![info exists _image(legend)] } {
2197	set _image(legend) [image create photo]
2198	}
2199	$_image(legend) configure -data $bytes
2200	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2201	if { [catch {DrawLegend} errs] != 0 } {
2202	puts stderr errs=$errs
2203	}
2204	}
2205	}
2206
2207	#
2208	# DrawLegend --
2209	#
2210	# Draws the legend in it's own canvas which resides to the right
2211	# of the contour plot area.
2212	#
2213	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2214	set fname $_curFldName
2215	set c $itk_component(view)
2216	set w [winfo width $c]
2217	set h [winfo height $c]
2218	set font "Arial 8"
2219	set lineht [font metrics $font -linespace]
2220
2221	if { [info exists _fields($fname)] } {
2222	foreach { title units } $_fields($fname) break
2223	if { $units != "" } {
2224	set title [format "%s (%s)" $title $units]
2225	}
2226	} else {
2227	set title $fname
2228	}
2229	if { $_settings(-legendvisible) } {
2230	set x [expr $w - 2]
2231	if { [$c find withtag "legend"] == "" } {
2232	set y 2
2233	$c create text $x $y \
2234	-anchor ne \
2235	-fill $itk_option(-plotforeground) -tags "title legend" \
2236	-font $font
2237	incr y $lineht
2238	$c create text $x $y \
2239	-anchor ne \
2240	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2241	-font $font
2242	incr y $lineht
2243	$c create image $x $y \
2244	-anchor ne \
2245	-image $_image(legend) -tags "colormap legend"
2246	$c create text $x [expr {$h-2}] \
2247	-anchor se \
2248	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2249	-font $font
2250	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2251	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2252	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2253	}
2254	$c bind title <ButtonPress> [itcl::code $this Combo post]
2255	$c bind title <Enter> [itcl::code $this Combo activate]
2256	$c bind title <Leave> [itcl::code $this Combo deactivate]
2257	# Reset the item coordinates according the current size of the plot.
2258	$c itemconfigure title -text $title
2259	if { [info exists _limits($_curFldName)] } {
2260	foreach {vmin vmax} $_limits($_curFldName) break
2261	$c itemconfigure vmin -text [format %g $vmin]
2262	$c itemconfigure vmax -text [format %g $vmax]
2263	}
2264	set y 2
2265	$c coords title $x $y
2266	incr y $lineht
2267	$c coords vmax $x $y
2268	incr y $lineht
2269	$c coords colormap $x $y
2270	$c coords vmin $x [expr {$h - 2}]
2271	}
2272	}
2273
2274	#
2275	# EnterLegend --
2276	#
2277	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2278	SetLegendTip $x $y
2279	}
2280
2281	#
2282	# MotionLegend --
2283	#
2284	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2285	Rappture::Tooltip::tooltip cancel
2286	set c $itk_component(view)
2287	SetLegendTip $x $y
2288	}
2289
2290	#
2291	# LeaveLegend --
2292	#
2293	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2294	Rappture::Tooltip::tooltip cancel
2295	.rappturetooltip configure -icon ""
2296	}
2297
2298	#
2299	# SetLegendTip --
2300	#
2301	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2302	set c $itk_component(view)
2303	set w [winfo width $c]
2304	set h [winfo height $c]
2305	set font "Arial 8"
2306	set lineht [font metrics $font -linespace]
2307
2308	set imgHeight [image height $_image(legend)]
2309	set coords [$c coords colormap]
2310	set imgX [expr $w - [image width $_image(legend)] - 2]
2311	set imgY [expr $y - 2 * ($lineht + 2)]
2312
2313	if { [info exists _fields($_title)] } {
2314	foreach { title units } $_fields($_title) break
2315	if { $units != "" } {
2316	set title [format "%s (%s)" $title $units]
2317	}
2318	} else {
2319	set title $_title
2320	}
2321	# Make a swatch of the selected color
2322	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2323	#puts stderr "out of range: $imgY"
2324	return
2325	}
2326	if { ![info exists _image(swatch)] } {
2327	set _image(swatch) [image create photo -width 24 -height 24]
2328	}
2329	set color [eval format "\#%02x%02x%02x" $pixel]
2330	$_image(swatch) put black -to 0 0 23 23
2331	$_image(swatch) put $color -to 1 1 22 22
2332	.rappturetooltip configure -icon $_image(swatch)
2333
2334	# Compute the value of the point
2335	if { [info exists _limits($_curFldName)] } {
2336	foreach {vmin vmax} $_limits($_curFldName) break
2337	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2338	set value [expr $t * ($vmax - $vmin) + $vmin]
2339	} else {
2340	set value 0.0
2341	}
2342	set tipx [expr $x + 15]
2343	set tipy [expr $y - 5]
2344	Rappture::Tooltip::text $c "$title $value"
2345	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2346	}
2347
2348	# ----------------------------------------------------------------------
2349	# USAGE: Slice move x\|y\|z <newval>
2350	#
2351	# Called automatically when the user drags the slider to move the
2352	# cut plane that slices 3D data. Gets the current value from the
2353	# slider and moves the cut plane to the appropriate point in the
2354	# data set.
2355	# ----------------------------------------------------------------------
2356	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2357	switch -- $option {
2358	"move" {
2359	set axis [lindex $args 0]
2360	set newval [lindex $args 1]
2361	if {[llength $args] != 2} {
2362	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2363	}
2364	set newpos [expr {0.01*$newval}]
2365	SendCmd "cutplane slice $axis $newpos"
2366	}
2367	"tooltip" {
2368	set axis [lindex $args 0]
2369	set val [$itk_component(${axis}CutScale) get]
2370	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2371	}
2372	default {
2373	error "bad option \"$option\": should be axis, move, or tooltip"
2374	}
2375	}
2376	}
2377
2378	# ----------------------------------------------------------------------
2379	# USAGE: _dropdown post
2380	# USAGE: _dropdown unpost
2381	# USAGE: _dropdown select
2382	#
2383	# Used internally to handle the dropdown list for this combobox. The
2384	# post/unpost options are invoked when the list is posted or unposted
2385	# to manage the relief of the controlling button. The select option
2386	# is invoked whenever there is a selection from the list, to assign
2387	# the value back to the gauge.
2388	# ----------------------------------------------------------------------
2389	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2390	set c $itk_component(view)
2391	switch -- $option {
2392	post {
2393	foreach { x1 y1 x2 y2 } [$c bbox title] break
2394	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2395	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2396	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2397	tk_popup $itk_component(fieldmenu) $x $y
2398	}
2399	activate {
2400	$c itemconfigure title -fill red
2401	}
2402	deactivate {
2403	$c itemconfigure title -fill white
2404	}
2405	invoke {
2406	$itk_component(field) value $_curFldLabel
2407	AdjustSetting -field
2408	}
2409	default {
2410	error "bad option \"$option\": should be post, unpost, select"
2411	}
2412	}
2413	}
2414
2415	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2416	array set positions {
2417	front "1 0 0 0"
2418	back "0 0 1 0"
2419	left "0.707107 0 -0.707107 0"
2420	right "0.707107 0 0.707107 0"
2421	top "0.707107 -0.707107 0 0"
2422	bottom "0.707107 0.707107 0 0"
2423	}
2424	foreach name { -qw -qx -qy -qz } value $positions($side) {
2425	set _view($name) $value
2426	}
2427	set q [ViewToQuaternion]
2428	$_arcball quaternion $q
2429	SendCmd "camera orient $q"
2430	SendCmd "camera reset"
2431	set _view(-xpan) 0
2432	set _view(-ypan) 0
2433	set _view(-zoom) 1.0
2434	}

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