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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 6338

Last change on this file since 6338 was 6338, checked in by ldelgass, 8 years ago
sync up viewer font setting
File size: 84.2 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 Connect {}
75	private method CurrentDatasets {args}
76	private method Disconnect {}
77	private method DoRescale {}
78	private method DoReseed {}
79	private method DoResize {}
80	private method DoRotate {}
81	private method EnterLegend { x y }
82	private method EventuallyRescale { length }
83	private method EventuallyReseed { numPoints }
84	private method EventuallyResize { w h }
85	private method EventuallyRotate { q }
86	private method EventuallySetCutplane { axis args }
87	private method GetImage { args }
88	private method GetVtkData { args }
89	private method InitSettings { args }
90	private method IsValidObject { dataobj }
91	private method LeaveLegend {}
92	private method LegendTitleAction { option }
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 min max 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 _streamlinesLength 0
148	private variable _numSeeds 200
149	private variable _colorMode "vmag"; # Mode of colormap (vmag or scalar)
150
151	private common _downloadPopup; # download options from popup
152	private common _hardcopy
153	}
154
155	itk::usual VtkStreamlinesViewer {
156	keep -background -foreground -cursor -font
157	keep -plotbackground -plotforeground
158	}
159
160	# ----------------------------------------------------------------------
161	# CONSTRUCTOR
162	# ----------------------------------------------------------------------
163	itcl::body Rappture::VtkStreamlinesViewer::constructor {args} {
164	set _serverType "vtkvis"
165
166	#DebugOn
167	EnableWaitDialog 2000
168
169	# Rebuild event
170	$_dispatcher register !rebuild
171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
172
173	# Resize event
174	$_dispatcher register !resize
175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
176
177	# Legend event
178	$_dispatcher register !legend
179	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
180
181	# Rescale streamlines event
182	$_dispatcher register !rescale
183	$_dispatcher dispatch $this !rescale "[itcl::code $this DoRescale]; list"
184
185	# Reseed event
186	$_dispatcher register !reseed
187	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
188
189	# Rotate event
190	$_dispatcher register !rotate
191	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
192
193	# X-Cutplane event
194	$_dispatcher register !xcutplane
195	$_dispatcher dispatch $this !xcutplane \
196	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
197
198	# Y-Cutplane event
199	$_dispatcher register !ycutplane
200	$_dispatcher dispatch $this !ycutplane \
201	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
202
203	# Z-Cutplane event
204	$_dispatcher register !zcutplane
205	$_dispatcher dispatch $this !zcutplane \
206	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
207
208	#
209	# Populate parser with commands handle incoming requests
210	#
211	$_parser alias image [itcl::code $this ReceiveImage]
212	$_parser alias legend [itcl::code $this ReceiveLegend]
213	$_parser alias dataset [itcl::code $this ReceiveDataset]
214
215	# Initialize the view to some default parameters.
216	array set _view {
217	-ortho 0
218	-qw 0.853553
219	-qx -0.353553
220	-qy 0.353553
221	-qz 0.146447
222	-xpan 0
223	-ypan 0
224	-zoom 1.0
225	}
226	set _arcball [blt::arcball create 100 100]
227	$_arcball quaternion [ViewToQuaternion]
228
229	array set _settings {
230	-axesvisible 1
231	-axislabelsvisible 1
232	-axisminorticks 1
233	-axismode "static"
234	-cutplaneedges 0
235	-cutplanelighting 1
236	-cutplaneopacity 100
237	-cutplanesvisible 0
238	-cutplanewireframe 0
239	-legendvisible 1
240	-streamlineslighting 1
241	-streamlinesmode lines
242	-streamlinesnumseeds 200
243	-streamlinesopacity 100
244	-streamlineslength 70
245	-streamlinesseedsvisible 0
246	-streamlinesvisible 1
247	-surfaceedges 0
248	-surfacelighting 1
249	-surfaceopacity 40
250	-surfacevisible 1
251	-surfacewireframe 0
252	-xcutplaneposition 50
253	-xcutplanevisible 1
254	-xgrid 0
255	-ycutplaneposition 50
256	-ycutplanevisible 1
257	-ygrid 0
258	-zcutplaneposition 50
259	-zcutplanevisible 1
260	-zgrid 0
261	}
262
263	itk_component add view {
264	canvas $itk_component(plotarea).view \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270
271	itk_component add fieldmenu {
272	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
273	-tearoff 0
274	} {
275	usual
276	ignore -background -foreground -relief -tearoff
277	}
278	set c $itk_component(view)
279	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
280	bind $c <Control-F1> [itcl::code $this ToggleConsole]
281
282	# Fix the scrollregion in case we go off screen
283	$c configure -scrollregion [$c bbox all]
284
285	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
286	set _map(cwidth) -1
287	set _map(cheight) -1
288	set _map(zoom) 1.0
289	set _map(original) ""
290
291	set f [$itk_component(main) component controls]
292	itk_component add reset {
293	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
294	-highlightthickness 0 \
295	-image [Rappture::icon reset-view] \
296	-command [itcl::code $this Zoom reset]
297	} {
298	usual
299	ignore -highlightthickness
300	}
301	pack $itk_component(reset) -side top -padx 2 -pady 2
302	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
303
304	itk_component add zoomin {
305	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
306	-highlightthickness 0 \
307	-image [Rappture::icon zoom-in] \
308	-command [itcl::code $this Zoom in]
309	} {
310	usual
311	ignore -highlightthickness
312	}
313	pack $itk_component(zoomin) -side top -padx 2 -pady 2
314	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
315
316	itk_component add zoomout {
317	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
318	-highlightthickness 0 \
319	-image [Rappture::icon zoom-out] \
320	-command [itcl::code $this Zoom out]
321	} {
322	usual
323	ignore -highlightthickness
324	}
325	pack $itk_component(zoomout) -side top -padx 2 -pady 2
326	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
327
328	itk_component add surface {
329	Rappture::PushButton $f.surface \
330	-onimage [Rappture::icon volume-on] \
331	-offimage [Rappture::icon volume-off] \
332	-variable [itcl::scope _settings(-surfacevisible)] \
333	-command [itcl::code $this AdjustSetting -surfacevisible]
334	}
335	$itk_component(surface) select
336	Rappture::Tooltip::for $itk_component(surface) \
337	"Show/Hide the boundary surface"
338	pack $itk_component(surface) -padx 2 -pady 2
339
340	itk_component add streamlines {
341	Rappture::PushButton $f.streamlines \
342	-onimage [Rappture::icon streamlines-on] \
343	-offimage [Rappture::icon streamlines-off] \
344	-variable [itcl::scope _settings(-streamlinesvisible)] \
345	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
346	}
347	$itk_component(streamlines) select
348	Rappture::Tooltip::for $itk_component(streamlines) \
349	"Show/Hide the streamlines"
350	pack $itk_component(streamlines) -padx 2 -pady 2
351
352	itk_component add cutplane {
353	Rappture::PushButton $f.cutplane \
354	-onimage [Rappture::icon cutbutton] \
355	-offimage [Rappture::icon cutbutton] \
356	-variable [itcl::scope _settings(-cutplanesvisible)] \
357	-command [itcl::code $this AdjustSetting -cutplanesvisible]
358	}
359	Rappture::Tooltip::for $itk_component(cutplane) \
360	"Show/Hide the cutplanes"
361	pack $itk_component(cutplane) -padx 2 -pady 2
362
363	if { [catch {
364	BuildSurfaceTab
365	BuildStreamsTab
366	BuildCutplanesTab
367	BuildAxisTab
368	BuildCameraTab
369	} errs] != 0 } {
370	puts stderr errs=$errs
371	}
372	# Legend
373
374	set _image(legend) [image create photo]
375	itk_component add legend {
376	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
377	} {
378	usual
379	ignore -highlightthickness
380	rename -background -plotbackground plotBackground Background
381	}
382
383	# Hack around the Tk panewindow. The problem is that the requested
384	# size of the 3d view isn't set until an image is retrieved from
385	# the server. So the panewindow uses the tiny size.
386	set w 10000
387	pack forget $itk_component(view)
388	blt::table $itk_component(plotarea) \
389	0,0 $itk_component(view) -fill both -reqwidth $w
390	blt::table configure $itk_component(plotarea) c1 -resize none
391
392	# Bindings for rotation via mouse
393	bind $itk_component(view) <ButtonPress-1> \
394	[itcl::code $this Rotate click %x %y]
395	bind $itk_component(view) <B1-Motion> \
396	[itcl::code $this Rotate drag %x %y]
397	bind $itk_component(view) <ButtonRelease-1> \
398	[itcl::code $this Rotate release %x %y]
399
400	# Bindings for panning via mouse
401	bind $itk_component(view) <ButtonPress-2> \
402	[itcl::code $this Pan click %x %y]
403	bind $itk_component(view) <B2-Motion> \
404	[itcl::code $this Pan drag %x %y]
405	bind $itk_component(view) <ButtonRelease-2> \
406	[itcl::code $this Pan release %x %y]
407
408	#bind $itk_component(view) <ButtonRelease-3> \
409	# [itcl::code $this Pick %x %y]
410
411	# Bindings for panning via keyboard
412	bind $itk_component(view) <KeyPress-Left> \
413	[itcl::code $this Pan set -10 0]
414	bind $itk_component(view) <KeyPress-Right> \
415	[itcl::code $this Pan set 10 0]
416	bind $itk_component(view) <KeyPress-Up> \
417	[itcl::code $this Pan set 0 -10]
418	bind $itk_component(view) <KeyPress-Down> \
419	[itcl::code $this Pan set 0 10]
420	bind $itk_component(view) <Shift-KeyPress-Left> \
421	[itcl::code $this Pan set -2 0]
422	bind $itk_component(view) <Shift-KeyPress-Right> \
423	[itcl::code $this Pan set 2 0]
424	bind $itk_component(view) <Shift-KeyPress-Up> \
425	[itcl::code $this Pan set 0 -2]
426	bind $itk_component(view) <Shift-KeyPress-Down> \
427	[itcl::code $this Pan set 0 2]
428
429	# Bindings for zoom via keyboard
430	bind $itk_component(view) <KeyPress-Prior> \
431	[itcl::code $this Zoom out]
432	bind $itk_component(view) <KeyPress-Next> \
433	[itcl::code $this Zoom in]
434
435	bind $itk_component(view) <Enter> "focus $itk_component(view)"
436
437	if {[string equal "x11" [tk windowingsystem]]} {
438	# Bindings for zoom via mouse
439	bind $itk_component(view) <4> [itcl::code $this Zoom out]
440	bind $itk_component(view) <5> [itcl::code $this Zoom in]
441	}
442
443	set _image(download) [image create photo]
444
445	eval itk_initialize $args
446	Connect
447	}
448
449	# ----------------------------------------------------------------------
450	# DESTRUCTOR
451	# ----------------------------------------------------------------------
452	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
453	Disconnect
454	image delete $_image(plot)
455	image delete $_image(download)
456	catch { blt::arcball destroy $_arcball }
457	}
458
459	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
460	if { $_width < 2 } {
461	set _width 500
462	}
463	if { $_height < 2 } {
464	set _height 500
465	}
466	set _start [clock clicks -milliseconds]
467	SendCmd "screen size $_width $_height"
468
469	set _legendPending 1
470	set _resizePending 0
471	}
472
473	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
474	SendCmd "camera orient [ViewToQuaternion]"
475	set _rotatePending 0
476	}
477
478	itcl::body Rappture::VtkStreamlinesViewer::DoRescale {} {
479	foreach dataset [CurrentDatasets -visible] {
480	SendCmd "streamlines length $_streamlinesLength $dataset"
481	}
482	set _rescalePending 0
483	}
484
485	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
486	foreach dataset [CurrentDatasets -visible] {
487	# This command works for either random or fmesh seeds
488	SendCmd "streamlines seed numpts $_numSeeds $dataset"
489	}
490	set _reseedPending 0
491	}
492
493	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
494	set _width $w
495	set _height $h
496	$_arcball resize $w $h
497	if { !$_resizePending } {
498	set _resizePending 1
499	$_dispatcher event -after 400 !resize
500	}
501	}
502
503	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRescale { length } {
504	set _streamlinesLength $length
505	if { !$_rescalePending } {
506	set _rescalePending 1
507	$_dispatcher event -after 600 !rescale
508	}
509	}
510
511	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
512	set _numSeeds $numPoints
513	if { !$_reseedPending } {
514	set _reseedPending 1
515	$_dispatcher event -after 600 !reseed
516	}
517	}
518
519	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
520	QuaternionToView $q
521	if { !$_rotatePending } {
522	set _rotatePending 1
523	$_dispatcher event -after 100 !rotate
524	}
525	}
526
527	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
528	if { !$_cutplanePending } {
529	set _cutplanePending 1
530	$_dispatcher event -after 100 !${axis}cutplane
531	}
532	}
533
534	# ----------------------------------------------------------------------
535	# USAGE: add <dataobj> ?<settings>?
536	#
537	# Clients use this to add a data object to the plot. The optional
538	# <settings> are used to configure the plot. Allowed settings are
539	# -color, -brightness, -width, -linestyle, and -raise.
540	# ----------------------------------------------------------------------
541	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
542	array set params {
543	-color auto
544	-width 1
545	-linestyle solid
546	-brightness 0
547	-raise 0
548	-description ""
549	-param ""
550	-type ""
551	}
552	array set params $settings
553
554	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
555	# can't handle -autocolors yet
556	set params(-color) black
557	}
558	set pos [lsearch -exact $_dlist $dataobj]
559	if {$pos < 0} {
560	lappend _dlist $dataobj
561	}
562	set _obj2ovride($dataobj-color) $params(-color)
563	set _obj2ovride($dataobj-width) $params(-width)
564	set _obj2ovride($dataobj-raise) $params(-raise)
565	$_dispatcher event -idle !rebuild
566	}
567
568
569	# ----------------------------------------------------------------------
570	# USAGE: delete ?<dataobj1> <dataobj2> ...?
571	#
572	# Clients use this to delete a dataobj from the plot. If no dataobjs
573	# are specified, then all dataobjs are deleted. No data objects are
574	# deleted. They are only removed from the display list.
575	# ----------------------------------------------------------------------
576	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
577	if { [llength $args] == 0} {
578	set args $_dlist
579	}
580	# Delete all specified dataobjs
581	set changed 0
582	foreach dataobj $args {
583	set pos [lsearch -exact $_dlist $dataobj]
584	if { $pos < 0 } {
585	continue; # Don't know anything about it.
586	}
587	# Remove it from the dataobj list.
588	set _dlist [lreplace $_dlist $pos $pos]
589	array unset _obj2ovride $dataobj-*
590	array unset _settings $dataobj-*
591	set changed 1
592	}
593	# If anything changed, then rebuild the plot
594	if { $changed } {
595	$_dispatcher event -idle !rebuild
596	}
597	}
598
599	# ----------------------------------------------------------------------
600	# USAGE: get ?-objects?
601	# USAGE: get ?-visible?
602	# USAGE: get ?-image view?
603	#
604	# Clients use this to query the list of objects being plotted, in
605	# order from bottom to top of this result. The optional "-image"
606	# flag can also request the internal images being shown.
607	# ----------------------------------------------------------------------
608	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
609	if {[llength $args] == 0} {
610	set args "-objects"
611	}
612
613	set op [lindex $args 0]
614	switch -- $op {
615	"-objects" {
616	# put the dataobj list in order according to -raise options
617	set dlist {}
618	foreach dataobj $_dlist {
619	if { ![IsValidObject $dataobj] } {
620	continue
621	}
622	if {[info exists _obj2ovride($dataobj-raise)] &&
623	$_obj2ovride($dataobj-raise)} {
624	set dlist [linsert $dlist 0 $dataobj]
625	} else {
626	lappend dlist $dataobj
627	}
628	}
629	return $dlist
630	}
631	"-visible" {
632	set dlist {}
633	foreach dataobj $_dlist {
634	if { ![IsValidObject $dataobj] } {
635	continue
636	}
637	if { ![info exists _obj2ovride($dataobj-raise)] } {
638	# No setting indicates that the object isn't visible.
639	continue
640	}
641	# Otherwise use the -raise parameter to put the object to
642	# the front of the list.
643	if { $_obj2ovride($dataobj-raise) } {
644	set dlist [linsert $dlist 0 $dataobj]
645	} else {
646	lappend dlist $dataobj
647	}
648	}
649	return $dlist
650	}
651	"-image" {
652	if {[llength $args] != 2} {
653	error "wrong # args: should be \"get -image view\""
654	}
655	switch -- [lindex $args end] {
656	view {
657	return $_image(plot)
658	}
659	default {
660	error "bad image name \"[lindex $args end]\": should be view"
661	}
662	}
663	}
664	default {
665	error "bad option \"$op\": should be -objects, -visible or -image"
666	}
667	}
668	}
669
670	# ----------------------------------------------------------------------
671	# USAGE: scale ?<data1> <data2> ...?
672	#
673	# Sets the default limits for the overall plot according to the
674	# limits of the data for all of the given <data> objects. This
675	# accounts for all objects--even those not showing on the screen.
676	# Because of this, the limits are appropriate for all objects as
677	# the user scans through data in the ResultSet viewer.
678	# ----------------------------------------------------------------------
679	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
680	foreach dataobj $args {
681	foreach axis { x y z } {
682	set lim [$dataobj limits $axis]
683	if { ![info exists _limits($axis)] } {
684	set _limits($axis) $lim
685	continue
686	}
687	foreach {min max} $lim break
688	foreach {amin amax} $_limits($axis) break
689	if { $amin > $min } {
690	set amin $min
691	}
692	if { $amax < $max } {
693	set amax $max
694	}
695	set _limits($axis) [list $amin $amax]
696	}
697	foreach { fname lim } [$dataobj fieldlimits] {
698	if { ![info exists _limits($fname)] } {
699	set _limits($fname) $lim
700	continue
701	}
702	foreach {min max} $lim break
703	foreach {fmin fmax} $_limits($fname) break
704	if { $fmin > $min } {
705	set fmin $min
706	}
707	if { $fmax < $max } {
708	set fmax $max
709	}
710	set _limits($fname) [list $fmin $fmax]
711	}
712	}
713	}
714
715	# ----------------------------------------------------------------------
716	# USAGE: download coming
717	# USAGE: download controls <downloadCommand>
718	# USAGE: download now
719	#
720	# Clients use this method to create a downloadable representation
721	# of the plot. Returns a list of the form {ext string}, where
722	# "ext" is the file extension (indicating the type of data) and
723	# "string" is the data itself.
724	# ----------------------------------------------------------------------
725	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
726	switch $option {
727	coming {
728	if {[catch {
729	blt::winop snap $itk_component(plotarea) $_image(download)
730	}]} {
731	$_image(download) configure -width 1 -height 1
732	$_image(download) put #000000
733	}
734	}
735	controls {
736	set popup .vtkviewerdownload
737	if { ![winfo exists .vtkviewerdownload] } {
738	set inner [BuildDownloadPopup $popup [lindex $args 0]]
739	} else {
740	set inner [$popup component inner]
741	}
742	set _downloadPopup(image_controls) $inner.image_frame
743	set num [llength [get]]
744	set num [expr {($num == 1) ? "1 result" : "$num results"}]
745	set word [Rappture::filexfer::label downloadWord]
746	$inner.summary configure -text "$word $num in the following format:"
747	update idletasks ;# Fix initial sizes
748	return $popup
749	}
750	now {
751	set popup .vtkviewerdownload
752	if {[winfo exists .vtkviewerdownload]} {
753	$popup deactivate
754	}
755	switch -- $_downloadPopup(format) {
756	"image" {
757	return [$this GetImage [lindex $args 0]]
758	}
759	"vtk" {
760	return [$this GetVtkData [lindex $args 0]]
761	}
762	}
763	return ""
764	}
765	default {
766	error "bad option \"$option\": should be coming, controls, now"
767	}
768	}
769	}
770
771	# ----------------------------------------------------------------------
772	# USAGE: Connect ?<host:port>,<host:port>...?
773	#
774	# Clients use this method to establish a connection to a new
775	# server, or to reestablish a connection to the previous server.
776	# Any existing connection is automatically closed.
777	# ----------------------------------------------------------------------
778	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
779	set _hosts [GetServerList "vtkvis"]
780	if { "" == $_hosts } {
781	return 0
782	}
783	set _reset 1
784	set result [VisViewer::Connect $_hosts]
785	if { $result } {
786	if { $_reportClientInfo } {
787	# Tell the server the viewer, hub, user and session.
788	# Do this immediately on connect before buffering any commands
789	global env
790
791	set info {}
792	set user "???"
793	if { [info exists env(USER)] } {
794	set user $env(USER)
795	}
796	set session "???"
797	if { [info exists env(SESSION)] } {
798	set session $env(SESSION)
799	}
800	lappend info "version" "$Rappture::version"
801	lappend info "build" "$Rappture::build"
802	lappend info "svnurl" "$Rappture::svnurl"
803	lappend info "installdir" "$Rappture::installdir"
804	lappend info "hub" [exec hostname]
805	lappend info "client" "vtkstreamlinesviewer"
806	lappend info "user" $user
807	lappend info "session" $session
808	SendCmd "clientinfo [list $info]"
809	}
810
811	set w [winfo width $itk_component(view)]
812	set h [winfo height $itk_component(view)]
813	EventuallyResize $w $h
814	}
815	return $result
816	}
817
818	#
819	# isconnected --
820	#
821	# Indicates if we are currently connected to the visualization server.
822	#
823	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
824	return [VisViewer::IsConnected]
825	}
826
827	#
828	# disconnect --
829	#
830	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
831	Disconnect
832	set _reset 1
833	}
834
835	#
836	# Disconnect --
837	#
838	# Clients use this method to disconnect from the current rendering server.
839	#
840	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
841	VisViewer::Disconnect
842
843	$_dispatcher cancel !rebuild
844	$_dispatcher cancel !resize
845	$_dispatcher cancel !reseed
846	$_dispatcher cancel !rotate
847	$_dispatcher cancel !xcutplane
848	$_dispatcher cancel !ycutplane
849	$_dispatcher cancel !zcutplane
850	$_dispatcher cancel !legend
851	# disconnected -- no more data sitting on server
852	array unset _datasets
853	array unset _colormaps
854	array unset _seeds
855	}
856
857	# ----------------------------------------------------------------------
858	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
859	#
860	# Invoked automatically whenever the "image" command comes in from
861	# the rendering server. Indicates that binary image data with the
862	# specified <size> will follow.
863	# ----------------------------------------------------------------------
864	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
865	array set info {
866	-token "???"
867	-bytes 0
868	-type image
869	}
870	array set info $args
871	set bytes [ReceiveBytes $info(-bytes)]
872	if { $info(-type) == "image" } {
873	if 0 {
874	set f [open "last.ppm" "w"]
875	fconfigure $f -encoding binary
876	puts -nonewline $f $bytes
877	close $f
878	}
879	$_image(plot) configure -data $bytes
880	set time [clock seconds]
881	set date [clock format $time]
882	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
883	if { $_start > 0 } {
884	set finish [clock clicks -milliseconds]
885	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
886	set _start 0
887	}
888	} elseif { $info(type) == "print" } {
889	set tag $this-print-$info(-token)
890	set _hardcopy($tag) $bytes
891	}
892	if { $_legendPending } {
893	RequestLegend
894	}
895	}
896
897	#
898	# ReceiveDataset --
899	#
900	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
901	if { ![isconnected] } {
902	return
903	}
904	set option [lindex $args 0]
905	switch -- $option {
906	"scalar" {
907	set option [lindex $args 1]
908	switch -- $option {
909	"world" {
910	foreach { x y z value tag } [lrange $args 2 end] break
911	}
912	"pixel" {
913	foreach { x y value tag } [lrange $args 2 end] break
914	}
915	}
916	}
917	"vector" {
918	set option [lindex $args 1]
919	switch -- $option {
920	"world" {
921	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
922	}
923	"pixel" {
924	foreach { x y vx vy vz tag } [lrange $args 2 end] break
925	}
926	}
927	}
928	"names" {
929	foreach { name } [lindex $args 1] {
930	#puts stderr "Dataset: $name"
931	}
932	}
933	default {
934	error "unknown dataset option \"$option\" from server"
935	}
936	}
937	}
938
939	# ----------------------------------------------------------------------
940	# USAGE: Rebuild
941	#
942	# Called automatically whenever something changes that affects the
943	# data in the widget. Clears any existing data and rebuilds the
944	# widget to display new data.
945	# ----------------------------------------------------------------------
946	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
947	set w [winfo width $itk_component(view)]
948	set h [winfo height $itk_component(view)]
949	if { $w < 2 \|\| $h < 2 } {
950	update
951	$_dispatcher event -idle !rebuild
952	return
953	}
954
955	# Turn on buffering of commands to the server. We don't want to
956	# be preempted by a server disconnect/reconnect (which automatically
957	# generates a new call to Rebuild).
958	StartBufferingCommands
959	set _legendPending 1
960
961	set _first ""
962	if { $_reset } {
963	set _width $w
964	set _height $h
965	$_arcball resize $w $h
966	DoResize
967	InitSettings -xgrid -ygrid -zgrid -axismode \
968	-axesvisible -axislabelsvisible -axisminorticks
969	# This "imgflush" is to force an image returned before vtkvis starts
970	# reading a (big) dataset. This will display an empty plot with axes
971	# at the correct image size.
972	SendCmd "imgflush"
973	}
974
975	set _first ""
976	SendCmd "dataset visible 0"
977	foreach dataobj [get -objects] {
978	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
979	set _first $dataobj
980	}
981	foreach comp [$dataobj components] {
982	set tag $dataobj-$comp
983	if { ![info exists _datasets($tag)] } {
984	set bytes [$dataobj vtkdata $comp]
985	set length [string length $bytes]
986	if 0 {
987	set f [open /tmp/vtkstreamlines.vtk "w"]
988	fconfigure $f -translation binary -encoding binary
989	puts -nonewline $f $bytes
990	close $f
991	}
992	if { $_reportClientInfo } {
993	set info {}
994	lappend info "tool_id" [$dataobj hints toolid]
995	lappend info "tool_name" [$dataobj hints toolname]
996	lappend info "tool_title" [$dataobj hints tooltitle]
997	lappend info "tool_command" [$dataobj hints toolcommand]
998	lappend info "tool_revision" [$dataobj hints toolrevision]
999	lappend info "dataset_label" [$dataobj hints label]
1000	lappend info "dataset_size" $length
1001	lappend info "dataset_tag" $tag
1002	SendCmd "clientinfo [list $info]"
1003	}
1004	SendCmd "dataset add $tag data follows $length"
1005	SendData $bytes
1006	set _datasets($tag) 1
1007	SetObjectStyle $dataobj $comp
1008	}
1009	if { [info exists _obj2ovride($dataobj-raise)] } {
1010	SendCmd "dataset visible 1 $tag"
1011	}
1012	}
1013	}
1014	if {"" != $_first} {
1015	foreach axis { x y z } {
1016	set label [$_first hints ${axis}label]
1017	if { $label != "" } {
1018	SendCmd [list axis name $axis $label]
1019	}
1020	set units [$_first hints ${axis}units]
1021	if { $units != "" } {
1022	SendCmd [list axis units $axis $units]
1023	}
1024	}
1025	$itk_component(field) choices delete 0 end
1026	$itk_component(fieldmenu) delete 0 end
1027	array unset _fields
1028	set _curFldName ""
1029	set _curFldLabel ""
1030	foreach cname [$_first components] {
1031	foreach fname [$_first fieldnames $cname] {
1032	if { [info exists _fields($fname)] } {
1033	continue
1034	}
1035	foreach { label units components } \
1036	[$_first fieldinfo $fname] break
1037	$itk_component(field) choices insert end "$fname" "$label"
1038	$itk_component(fieldmenu) add radiobutton -label "$label" \
1039	-value $label -variable [itcl::scope _curFldLabel] \
1040	-selectcolor red \
1041	-activebackground $itk_option(-plotbackground) \
1042	-activeforeground $itk_option(-plotforeground) \
1043	-font "Arial 8" \
1044	-command [itcl::code $this LegendTitleAction save]
1045	set _fields($fname) [list $label $units $components]
1046	if { $_curFldName == "" && $components == 3 } {
1047	set _curFldName $fname
1048	set _curFldLabel $label
1049	}
1050	}
1051	}
1052	$itk_component(field) value $_curFldLabel
1053	}
1054
1055	if { $_reset } {
1056	InitSettings -streamlinesseedsvisible -streamlinesopacity \
1057	-streamlinesvisible \
1058	-streamlineslighting \
1059	-streamlinescolormap -field \
1060	-surfacevisible -surfaceedges -surfacelighting -surfaceopacity \
1061	-surfacewireframe \
1062	-cutplanesvisible \
1063	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
1064	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1065
1066	# Reset the camera and other view parameters
1067	$_arcball quaternion [ViewToQuaternion]
1068	if {$_view(-ortho)} {
1069	SendCmd "camera mode ortho"
1070	} else {
1071	SendCmd "camera mode persp"
1072	}
1073	DoRotate
1074	PanCamera
1075	Zoom reset
1076	SendCmd "camera reset"
1077	set _reset 0
1078	}
1079	# Actually write the commands to the server socket. If it fails, we don't
1080	# care. We're finished here.
1081	blt::busy hold $itk_component(hull)
1082	StopBufferingCommands
1083	blt::busy release $itk_component(hull)
1084	}
1085
1086	# ----------------------------------------------------------------------
1087	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1088	#
1089	# Returns a list of server IDs for the current datasets being displayed. This
1090	# is normally a single ID, but it might be a list of IDs if the current data
1091	# object has multiple components.
1092	# ----------------------------------------------------------------------
1093	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1094	set flag [lindex $args 0]
1095	switch -- $flag {
1096	"-all" {
1097	if { [llength $args] > 1 } {
1098	error "CurrentDatasets: can't specify dataobj after \"-all\""
1099	}
1100	set dlist [get -objects]
1101	}
1102	"-visible" {
1103	if { [llength $args] > 1 } {
1104	set dlist {}
1105	set args [lrange $args 1 end]
1106	foreach dataobj $args {
1107	if { [info exists _obj2ovride($dataobj-raise)] } {
1108	lappend dlist $dataobj
1109	}
1110	}
1111	} else {
1112	set dlist [get -visible]
1113	}
1114	}
1115	default {
1116	set dlist $args
1117	}
1118	}
1119	set rlist ""
1120	foreach dataobj $dlist {
1121	foreach comp [$dataobj components] {
1122	set tag $dataobj-$comp
1123	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1124	lappend rlist $tag
1125	}
1126	}
1127	}
1128	return $rlist
1129	}
1130
1131	# ----------------------------------------------------------------------
1132	# USAGE: Zoom in
1133	# USAGE: Zoom out
1134	# USAGE: Zoom reset
1135	#
1136	# Called automatically when the user clicks on one of the zoom
1137	# controls for this widget. Changes the zoom for the current view.
1138	# ----------------------------------------------------------------------
1139	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1140	switch -- $option {
1141	"in" {
1142	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1143	SendCmd "camera zoom $_view(-zoom)"
1144	}
1145	"out" {
1146	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1147	SendCmd "camera zoom $_view(-zoom)"
1148	}
1149	"reset" {
1150	array set _view {
1151	-qw 0.853553
1152	-qx -0.353553
1153	-qy 0.353553
1154	-qz 0.146447
1155	-xpan 0
1156	-ypan 0
1157	-zoom 1.0
1158	}
1159	if { $_first != "" } {
1160	set location [$_first hints camera]
1161	if { $location != "" } {
1162	array set _view $location
1163	}
1164	}
1165	$_arcball quaternion [ViewToQuaternion]
1166	DoRotate
1167	SendCmd "camera reset"
1168	}
1169	}
1170	}
1171
1172	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1173	set x $_view(-xpan)
1174	set y $_view(-ypan)
1175	SendCmd "camera pan $x $y"
1176	}
1177
1178	# ----------------------------------------------------------------------
1179	# USAGE: Rotate click <x> <y>
1180	# USAGE: Rotate drag <x> <y>
1181	# USAGE: Rotate release <x> <y>
1182	#
1183	# Called automatically when the user clicks/drags/releases in the
1184	# plot area. Moves the plot according to the user's actions.
1185	# ----------------------------------------------------------------------
1186	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1187	switch -- $option {
1188	"click" {
1189	$itk_component(view) configure -cursor fleur
1190	set _click(x) $x
1191	set _click(y) $y
1192	}
1193	"drag" {
1194	if {[array size _click] == 0} {
1195	Rotate click $x $y
1196	} else {
1197	set w [winfo width $itk_component(view)]
1198	set h [winfo height $itk_component(view)]
1199	if {$w <= 0 \|\| $h <= 0} {
1200	return
1201	}
1202
1203	if {[catch {
1204	# this fails sometimes for no apparent reason
1205	set dx [expr {double($x-$_click(x))/$w}]
1206	set dy [expr {double($y-$_click(y))/$h}]
1207	}]} {
1208	return
1209	}
1210	if { $dx == 0 && $dy == 0 } {
1211	return
1212	}
1213	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1214	EventuallyRotate $q
1215	set _click(x) $x
1216	set _click(y) $y
1217	}
1218	}
1219	"release" {
1220	Rotate drag $x $y
1221	$itk_component(view) configure -cursor ""
1222	catch {unset _click}
1223	}
1224	default {
1225	error "bad option \"$option\": should be click, drag, release"
1226	}
1227	}
1228	}
1229
1230	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1231	foreach tag [CurrentDatasets -visible] {
1232	SendCmd "dataset getscalar pixel $x $y $tag"
1233	}
1234	}
1235
1236	# ----------------------------------------------------------------------
1237	# USAGE: $this Pan click x y
1238	# $this Pan drag x y
1239	# $this Pan release x y
1240	#
1241	# Called automatically when the user clicks on one of the zoom
1242	# controls for this widget. Changes the zoom for the current view.
1243	# ----------------------------------------------------------------------
1244	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1245	switch -- $option {
1246	"set" {
1247	set w [winfo width $itk_component(view)]
1248	set h [winfo height $itk_component(view)]
1249	set x [expr $x / double($w)]
1250	set y [expr $y / double($h)]
1251	set _view(-xpan) [expr $_view(-xpan) + $x]
1252	set _view(-ypan) [expr $_view(-ypan) + $y]
1253	PanCamera
1254	return
1255	}
1256	"click" {
1257	set _click(x) $x
1258	set _click(y) $y
1259	$itk_component(view) configure -cursor hand1
1260	}
1261	"drag" {
1262	if { ![info exists _click(x)] } {
1263	set _click(x) $x
1264	}
1265	if { ![info exists _click(y)] } {
1266	set _click(y) $y
1267	}
1268	set w [winfo width $itk_component(view)]
1269	set h [winfo height $itk_component(view)]
1270	set dx [expr ($_click(x) - $x)/double($w)]
1271	set dy [expr ($_click(y) - $y)/double($h)]
1272	set _click(x) $x
1273	set _click(y) $y
1274	set _view(-xpan) [expr $_view(-xpan) - $dx]
1275	set _view(-ypan) [expr $_view(-ypan) - $dy]
1276	PanCamera
1277	}
1278	"release" {
1279	Pan drag $x $y
1280	$itk_component(view) configure -cursor ""
1281	}
1282	default {
1283	error "unknown option \"$option\": should set, click, drag, or release"
1284	}
1285	}
1286	}
1287
1288	# ----------------------------------------------------------------------
1289	# USAGE: InitSettings <what> ?<value>?
1290	#
1291	# Used internally to update rendering settings whenever parameters
1292	# change in the popup settings panel. Sends the new settings off
1293	# to the back end.
1294	# ----------------------------------------------------------------------
1295	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1296	foreach spec $args {
1297	if { [info exists _settings($_first${spec})] } {
1298	# Reset global setting with dataobj specific setting
1299	set _settings($spec) $_settings($_first${spec})
1300	}
1301	AdjustSetting $spec
1302	}
1303	}
1304
1305	#
1306	# AdjustSetting --
1307	#
1308	# Changes/updates a specific setting in the widget. There are
1309	# usually user-setable option. Commands are sent to the render
1310	# server.
1311	#
1312	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1313	if { ![isconnected] } {
1314	return
1315	}
1316	switch -- $what {
1317	"-axesvisible" {
1318	set bool $_settings($what)
1319	SendCmd "axis visible all $bool"
1320	}
1321	"-axislabelsvisible" {
1322	set bool $_settings($what)
1323	SendCmd "axis labels all $bool"
1324	}
1325	"-axisminorticks" {
1326	set bool $_settings($what)
1327	SendCmd "axis minticks all $bool"
1328	}
1329	"-axismode" {
1330	set mode [$itk_component(axismode) value]
1331	set mode [$itk_component(axismode) translate $mode]
1332	set _settings($what) $mode
1333	SendCmd "axis flymode $mode"
1334	}
1335	"-cutplaneedges" {
1336	set bool $_settings($what)
1337	SendCmd "cutplane edges $bool"
1338	}
1339	"-cutplanesvisible" {
1340	set bool $_settings($what)
1341	SendCmd "cutplane visible $bool"
1342	if { $bool } {
1343	Rappture::Tooltip::for $itk_component(cutplane) \
1344	"Hide the cutplanes"
1345	} else {
1346	Rappture::Tooltip::for $itk_component(cutplane) \
1347	"Show the cutplanes"
1348	}
1349	}
1350	"-cutplanewireframe" {
1351	set bool $_settings($what)
1352	SendCmd "cutplane wireframe $bool"
1353	}
1354	"-cutplanelighting" {
1355	set bool $_settings($what)
1356	SendCmd "cutplane lighting $bool"
1357	}
1358	"-cutplaneopacity" {
1359	set val $_settings($what)
1360	set sval [expr { 0.01 * double($val) }]
1361	SendCmd "cutplane opacity $sval"
1362	}
1363	"-field" {
1364	set label [$itk_component(field) value]
1365	set fname [$itk_component(field) translate $label]
1366	set _settings($what) $fname
1367	if { [info exists _fields($fname)] } {
1368	foreach { label units components } $_fields($fname) break
1369	if { $components > 1 } {
1370	set _colorMode vmag
1371	} else {
1372	set _colorMode scalar
1373	}
1374	set _curFldName $fname
1375	set _curFldLabel $label
1376	} else {
1377	puts stderr "unknown field \"$fname\""
1378	return
1379	}
1380	# Get the new limits because the field changed.
1381	if { ![info exists _limits($_curFldName)] } {
1382	SendCmd "dataset maprange all"
1383	} else {
1384	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1385	}
1386	SendCmd "streamlines colormode $_colorMode $_curFldName"
1387	SendCmd "cutplane colormode $_colorMode $_curFldName"
1388	DrawLegend
1389	}
1390	"-streamlinesseedsvisible" {
1391	set bool $_settings($what)
1392	SendCmd "streamlines seed visible $bool"
1393	}
1394	"-streamlinesnumseeds" {
1395	set density $_settings($what)
1396	EventuallyReseed $density
1397	}
1398	"-streamlinesvisible" {
1399	set bool $_settings($what)
1400	SendCmd "streamlines visible $bool"
1401	if { $bool } {
1402	Rappture::Tooltip::for $itk_component(streamlines) \
1403	"Hide the streamlines"
1404	} else {
1405	Rappture::Tooltip::for $itk_component(streamlines) \
1406	"Show the streamlines"
1407	}
1408	}
1409	"-streamlinesmode" {
1410	set mode [$itk_component(streammode) value]
1411	set _settings($what) $mode
1412	switch -- $mode {
1413	"lines" {
1414	SendCmd "streamlines lines"
1415	}
1416	"ribbons" {
1417	SendCmd "streamlines ribbons 3 0"
1418	}
1419	"tubes" {
1420	SendCmd "streamlines tubes 5 3"
1421	}
1422	}
1423	}
1424	"-streamlinescolormap" {
1425	set colormap [$itk_component(colormap) value]
1426	set _settings($what) $colormap
1427	SetCurrentColormap $colormap
1428	set _legendPending 1
1429	}
1430	"-streamlinesopacity" {
1431	set val $_settings($what)
1432	set sval [expr { 0.01 * double($val) }]
1433	SendCmd "streamlines opacity $sval"
1434	}
1435	"-streamlineslength" {
1436	set val $_settings($what)
1437	set sval [expr { (0.01 * double($val)) / 0.7 }]
1438	foreach axis {x y z} {
1439	foreach {min max} $_limits($axis) break
1440	set ${axis}len [expr double($max) - double($min)]
1441	}
1442	set length [expr { $sval * ($xlen + $ylen + $zlen) } ]
1443	EventuallyRescale $length
1444	}
1445	"-streamlineslighting" {
1446	set bool $_settings($what)
1447	SendCmd "streamlines lighting $bool"
1448	}
1449	"-surfaceopacity" {
1450	set val $_settings($what)
1451	set sval [expr { 0.01 * double($val) }]
1452	SendCmd "polydata opacity $sval"
1453	}
1454	"-surfacewireframe" {
1455	set bool $_settings($what)
1456	SendCmd "polydata wireframe $bool"
1457	}
1458	"-surfacevisible" {
1459	set bool $_settings($what)
1460	SendCmd "polydata visible $bool"
1461	if { $bool } {
1462	Rappture::Tooltip::for $itk_component(surface) \
1463	"Hide the boundary surface"
1464	} else {
1465	Rappture::Tooltip::for $itk_component(surface) \
1466	"Show the boundary surface"
1467	}
1468	}
1469	"-surfacelighting" {
1470	set bool $_settings($what)
1471	SendCmd "polydata lighting $bool"
1472	}
1473	"-surfaceedges" {
1474	set bool $_settings($what)
1475	SendCmd "polydata edges $bool"
1476	}
1477	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1478	set axis [string range $what 1 1]
1479	set bool $_settings($what)
1480	if { $bool } {
1481	$itk_component(${axis}CutScale) configure -state normal \
1482	-troughcolor white
1483	} else {
1484	$itk_component(${axis}CutScale) configure -state disabled \
1485	-troughcolor grey82
1486	}
1487	SendCmd "cutplane axis $axis $bool"
1488	}
1489	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1490	set axis [string range $what 1 1]
1491	set pos [expr $_settings($what) * 0.01]
1492	SendCmd "cutplane slice ${axis} ${pos}"
1493	set _cutplanePending 0
1494	}
1495	"-xgrid" - "-ygrid" - "-zgrid" {
1496	set axis [string range $what 1 1]
1497	set bool $_settings($what)
1498	SendCmd "axis grid $axis $bool"
1499	}
1500	default {
1501	error "don't know how to fix $what"
1502	}
1503	}
1504	}
1505
1506	#
1507	# RequestLegend --
1508	#
1509	# Request a new legend from the server. The size of the legend
1510	# is determined from the height of the canvas. It will be rotated
1511	# to be vertical when drawn.
1512	#
1513	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1514	set font "Arial 8"
1515	set lineht [font metrics $font -linespace]
1516	set w 12
1517	set h [expr {$_height - 3 * ($lineht + 2)}]
1518	if { $h < 1 } {
1519	return
1520	}
1521	# Set the legend on the first dataset.
1522	if { $_currentColormap != "" } {
1523	set cmap $_currentColormap
1524	if { ![info exists _colormaps($cmap)] } {
1525	BuildColormap $cmap
1526	set _colormaps($cmap) 1
1527	}
1528	#SendCmd "legend $cmap $_colorMode $_curFldName {} $w $h 0"
1529	SendCmd "legend2 $cmap $w $h"
1530	}
1531	}
1532
1533	#
1534	# SetCurrentColormap --
1535	#
1536	itcl::body Rappture::VtkStreamlinesViewer::SetCurrentColormap { name } {
1537	# Keep track of the colormaps that we build.
1538	if { ![info exists _colormaps($name)] } {
1539	BuildColormap $name
1540	set _colormaps($name) 1
1541	}
1542	set _currentColormap $name
1543	SendCmd "streamlines colormap $_currentColormap"
1544	SendCmd "cutplane colormap $_currentColormap"
1545	}
1546
1547	#
1548	# BuildColormap --
1549	#
1550	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name } {
1551	set cmap [ColorsToColormap $name]
1552	if { [llength $cmap] == 0 } {
1553	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1554	}
1555	set amap "0.0 1.0 1.0 1.0"
1556	SendCmd "colormap add $name { $cmap } { $amap }"
1557	}
1558
1559	# ----------------------------------------------------------------------
1560	# CONFIGURATION OPTION: -plotbackground
1561	# ----------------------------------------------------------------------
1562	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1563	if { [isconnected] } {
1564	set rgb [Color2RGB $itk_option(-plotbackground)]
1565	SendCmd "screen bgcolor $rgb"
1566	}
1567	}
1568
1569	# ----------------------------------------------------------------------
1570	# CONFIGURATION OPTION: -plotforeground
1571	# ----------------------------------------------------------------------
1572	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1573	if { [isconnected] } {
1574	set rgb [Color2RGB $itk_option(-plotforeground)]
1575	SendCmd "axis color all $rgb"
1576	SendCmd "outline color $rgb"
1577	SendCmd "cutplane color $rgb"
1578	}
1579	}
1580
1581	itcl::body Rappture::VtkStreamlinesViewer::BuildSurfaceTab {} {
1582
1583	set fg [option get $itk_component(hull) font Font]
1584	#set bfg [option get $itk_component(hull) boldFont Font]
1585
1586	set inner [$itk_component(main) insert end \
1587	-title "Boundary Surface Settings" \
1588	-icon [Rappture::icon volume-on]]
1589	$inner configure -borderwidth 4
1590
1591	checkbutton $inner.surface \
1592	-text "Show Surface" \
1593	-variable [itcl::scope _settings(-surfacevisible)] \
1594	-command [itcl::code $this AdjustSetting -surfacevisible] \
1595	-font "Arial 9"
1596
1597	checkbutton $inner.wireframe \
1598	-text "Show Wireframe" \
1599	-variable [itcl::scope _settings(-surfacewireframe)] \
1600	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1601	-font "Arial 9"
1602
1603	checkbutton $inner.lighting \
1604	-text "Enable Lighting" \
1605	-variable [itcl::scope _settings(-surfacelighting)] \
1606	-command [itcl::code $this AdjustSetting -surfacelighting] \
1607	-font "Arial 9"
1608
1609	checkbutton $inner.edges \
1610	-text "Show Edges" \
1611	-variable [itcl::scope _settings(-surfaceedges)] \
1612	-command [itcl::code $this AdjustSetting -surfaceedges] \
1613	-font "Arial 9"
1614
1615	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1616	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1617	-variable [itcl::scope _settings(-surfaceopacity)] \
1618	-width 10 \
1619	-showvalue off \
1620	-command [itcl::code $this AdjustSetting -surfaceopacity]
1621
1622	blt::table $inner \
1623	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1624	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1625	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1626	3,0 $inner.opacity_l -anchor w -pady 2 \
1627	3,1 $inner.opacity -fill x -pady 2
1628
1629	blt::table configure $inner r* c* -resize none
1630	blt::table configure $inner r4 c1 -resize expand
1631	}
1632
1633	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1634
1635	set fg [option get $itk_component(hull) font Font]
1636	#set bfg [option get $itk_component(hull) boldFont Font]
1637
1638	set inner [$itk_component(main) insert end \
1639	-title "Streams Settings" \
1640	-icon [Rappture::icon streamlines-on]]
1641	$inner configure -borderwidth 4
1642
1643	checkbutton $inner.streamlines \
1644	-text "Show Streamlines" \
1645	-variable [itcl::scope _settings(-streamlinesvisible)] \
1646	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
1647	-font "Arial 9"
1648
1649	checkbutton $inner.lighting \
1650	-text "Enable Lighting" \
1651	-variable [itcl::scope _settings(-streamlineslighting)] \
1652	-command [itcl::code $this AdjustSetting -streamlineslighting] \
1653	-font "Arial 9"
1654
1655	checkbutton $inner.seeds \
1656	-text "Show Seeds" \
1657	-variable [itcl::scope _settings(-streamlinesseedsvisible)] \
1658	-command [itcl::code $this AdjustSetting -streamlinesseedsvisible] \
1659	-font "Arial 9"
1660
1661	label $inner.mode_l -text "Mode" -font "Arial 9"
1662	itk_component add streammode {
1663	Rappture::Combobox $inner.mode -width 10 -editable 0
1664	}
1665	$inner.mode choices insert end \
1666	"lines" "lines" \
1667	"ribbons" "ribbons" \
1668	"tubes" "tubes"
1669	$itk_component(streammode) value $_settings(-streamlinesmode)
1670	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -streamlinesmode]
1671
1672	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1673	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1674	-variable [itcl::scope _settings(-streamlinesopacity)] \
1675	-width 10 \
1676	-showvalue off \
1677	-command [itcl::code $this AdjustSetting -streamlinesopacity]
1678
1679	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1680	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1681	-variable [itcl::scope _settings(-streamlinesnumseeds)] \
1682	-width 10 \
1683	-showvalue on \
1684	-command [itcl::code $this AdjustSetting -streamlinesnumseeds]
1685
1686	label $inner.scale_l -text "Length" -font "Arial 9"
1687	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1688	-variable [itcl::scope _settings(-streamlineslength)] \
1689	-width 10 \
1690	-showvalue off \
1691	-command [itcl::code $this AdjustSetting -streamlineslength]
1692
1693	label $inner.field_l -text "Color by" -font "Arial 9"
1694	itk_component add field {
1695	Rappture::Combobox $inner.field -width 10 -editable 0
1696	}
1697	bind $inner.field <<Value>> \
1698	[itcl::code $this AdjustSetting -field]
1699
1700	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1701	itk_component add colormap {
1702	Rappture::Combobox $inner.colormap -width 10 -editable 0
1703	}
1704	$inner.colormap choices insert end [GetColormapList]
1705
1706	$itk_component(colormap) value "BCGYR"
1707	bind $inner.colormap <<Value>> \
1708	[itcl::code $this AdjustSetting -streamlinescolormap]
1709
1710	blt::table $inner \
1711	0,0 $inner.field_l -anchor w -pady 2 \
1712	0,1 $inner.field -fill x -pady 2 \
1713	1,0 $inner.colormap_l -anchor w -pady 2 \
1714	1,1 $inner.colormap -fill x -pady 2 \
1715	2,0 $inner.mode_l -anchor w -pady 2 \
1716	2,1 $inner.mode -fill x -pady 2 \
1717	3,0 $inner.scale_l -anchor w -pady 2 \
1718	3,1 $inner.scale -fill x -pady 2 \
1719	4,0 $inner.opacity_l -anchor w -pady 2 \
1720	4,1 $inner.opacity -fill x -pady 2 \
1721	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1722	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1723	7,0 $inner.density_l -anchor w -pady 2 \
1724	7,1 $inner.density -fill x -pady 2 \
1725
1726	blt::table configure $inner r* c* -resize none
1727	blt::table configure $inner r8 c1 c2 -resize expand
1728	}
1729
1730	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1731
1732	set fg [option get $itk_component(hull) font Font]
1733	#set bfg [option get $itk_component(hull) boldFont Font]
1734
1735	set inner [$itk_component(main) insert end \
1736	-title "Axis Settings" \
1737	-icon [Rappture::icon axis2]]
1738	$inner configure -borderwidth 4
1739
1740	checkbutton $inner.visible \
1741	-text "Axes" \
1742	-variable [itcl::scope _settings(-axesvisible)] \
1743	-command [itcl::code $this AdjustSetting -axesvisible] \
1744	-font "Arial 9"
1745
1746	checkbutton $inner.labels \
1747	-text "Axis Labels" \
1748	-variable [itcl::scope _settings(-axislabelsvisible)] \
1749	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1750	-font "Arial 9"
1751	label $inner.grid_l -text "Grid" -font "Arial 9"
1752	checkbutton $inner.xgrid \
1753	-text "X" \
1754	-variable [itcl::scope _settings(-xgrid)] \
1755	-command [itcl::code $this AdjustSetting -xgrid] \
1756	-font "Arial 9"
1757	checkbutton $inner.ygrid \
1758	-text "Y" \
1759	-variable [itcl::scope _settings(-ygrid)] \
1760	-command [itcl::code $this AdjustSetting -ygrid] \
1761	-font "Arial 9"
1762	checkbutton $inner.zgrid \
1763	-text "Z" \
1764	-variable [itcl::scope _settings(-zgrid)] \
1765	-command [itcl::code $this AdjustSetting -zgrid] \
1766	-font "Arial 9"
1767	checkbutton $inner.minorticks \
1768	-text "Minor Ticks" \
1769	-variable [itcl::scope _settings(-axisminorticks)] \
1770	-command [itcl::code $this AdjustSetting -axisminorticks] \
1771	-font "Arial 9"
1772
1773	label $inner.mode_l -text "Mode" -font "Arial 9"
1774
1775	itk_component add axismode {
1776	Rappture::Combobox $inner.mode -width 10 -editable 0
1777	}
1778	$inner.mode choices insert end \
1779	"static_triad" "static" \
1780	"closest_triad" "closest" \
1781	"furthest_triad" "farthest" \
1782	"outer_edges" "outer"
1783	$itk_component(axismode) value $_settings(-axismode)
1784	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1785
1786	blt::table $inner \
1787	0,0 $inner.visible -anchor w -cspan 4 \
1788	1,0 $inner.labels -anchor w -cspan 4 \
1789	2,0 $inner.minorticks -anchor w -cspan 4 \
1790	4,0 $inner.grid_l -anchor w \
1791	4,1 $inner.xgrid -anchor w \
1792	4,2 $inner.ygrid -anchor w \
1793	4,3 $inner.zgrid -anchor w \
1794	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1795	5,1 $inner.mode -fill x -cspan 3
1796
1797	blt::table configure $inner r* c* -resize none
1798	blt::table configure $inner r7 c6 -resize expand
1799	blt::table configure $inner r3 -height 0.125i
1800	}
1801
1802	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1803	set inner [$itk_component(main) insert end \
1804	-title "Camera Settings" \
1805	-icon [Rappture::icon camera]]
1806	$inner configure -borderwidth 4
1807
1808	label $inner.view_l -text "view" -font "Arial 9"
1809	set f [frame $inner.view]
1810	foreach side { front back left right top bottom } {
1811	button $f.$side -image [Rappture::icon view$side] \
1812	-command [itcl::code $this SetOrientation $side]
1813	Rappture::Tooltip::for $f.$side "Change the view to $side"
1814	pack $f.$side -side left
1815	}
1816
1817	blt::table $inner \
1818	0,0 $inner.view_l -anchor e -pady 2 \
1819	0,1 $inner.view -anchor w -pady 2
1820	blt::table configure $inner r0 -resize none
1821
1822	set labels { qx qy qz qw xpan ypan zoom }
1823	set row 1
1824	foreach tag $labels {
1825	label $inner.${tag}label -text $tag -font "Arial 9"
1826	entry $inner.${tag} -font "Arial 9" -bg white \
1827	-textvariable [itcl::scope _view(-$tag)]
1828	bind $inner.${tag} <Return> \
1829	[itcl::code $this camera set -${tag}]
1830	bind $inner.${tag} <KP_Enter> \
1831	[itcl::code $this camera set -${tag}]
1832	blt::table $inner \
1833	$row,0 $inner.${tag}label -anchor e -pady 2 \
1834	$row,1 $inner.${tag} -anchor w -pady 2
1835	blt::table configure $inner r$row -resize none
1836	incr row
1837	}
1838	checkbutton $inner.ortho \
1839	-text "Orthographic Projection" \
1840	-variable [itcl::scope _view(-ortho)] \
1841	-command [itcl::code $this camera set -ortho] \
1842	-font "Arial 9"
1843	blt::table $inner \
1844	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1845	blt::table configure $inner r$row -resize none
1846	incr row
1847
1848	blt::table configure $inner c* -resize none
1849	blt::table configure $inner c2 -resize expand
1850	blt::table configure $inner r$row -resize expand
1851	}
1852
1853	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplanesTab {} {
1854
1855	set fg [option get $itk_component(hull) font Font]
1856
1857	set inner [$itk_component(main) insert end \
1858	-title "Cutplane Settings" \
1859	-icon [Rappture::icon cutbutton]]
1860
1861	$inner configure -borderwidth 4
1862
1863	checkbutton $inner.visible \
1864	-text "Show Cutplanes" \
1865	-variable [itcl::scope _settings(-cutplanesvisible)] \
1866	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1867	-font "Arial 9"
1868
1869	checkbutton $inner.wireframe \
1870	-text "Show Wireframe" \
1871	-variable [itcl::scope _settings(-cutplanewireframe)] \
1872	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1873	-font "Arial 9"
1874
1875	checkbutton $inner.lighting \
1876	-text "Enable Lighting" \
1877	-variable [itcl::scope _settings(-cutplanelighting)] \
1878	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1879	-font "Arial 9"
1880
1881	checkbutton $inner.edges \
1882	-text "Show Edges" \
1883	-variable [itcl::scope _settings(-cutplaneedges)] \
1884	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1885	-font "Arial 9"
1886
1887	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1888	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1889	-variable [itcl::scope _settings(-cutplaneopacity)] \
1890	-width 10 \
1891	-showvalue off \
1892	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1893	$inner.opacity set $_settings(-cutplaneopacity)
1894
1895	# X-value slicer...
1896	itk_component add xCutButton {
1897	Rappture::PushButton $inner.xbutton \
1898	-onimage [Rappture::icon x-cutplane-red] \
1899	-offimage [Rappture::icon x-cutplane-red] \
1900	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1901	-variable [itcl::scope _settings(-xcutplanevisible)]
1902	}
1903	Rappture::Tooltip::for $itk_component(xCutButton) \
1904	"Toggle the X-axis cutplane on/off"
1905	$itk_component(xCutButton) select
1906
1907	itk_component add xCutScale {
1908	::scale $inner.xval -from 100 -to 0 \
1909	-width 10 -orient vertical -showvalue 1 \
1910	-borderwidth 1 -highlightthickness 0 \
1911	-command [itcl::code $this EventuallySetCutplane x] \
1912	-variable [itcl::scope _settings(-xcutplaneposition)] \
1913	-foreground red3 -font "Arial 9 bold"
1914	} {
1915	usual
1916	ignore -borderwidth -highlightthickness -foreground -font
1917	}
1918	# Set the default cutplane value before disabling the scale.
1919	$itk_component(xCutScale) set 50
1920	$itk_component(xCutScale) configure -state disabled
1921	Rappture::Tooltip::for $itk_component(xCutScale) \
1922	"@[itcl::code $this Slice tooltip x]"
1923
1924	# Y-value slicer...
1925	itk_component add yCutButton {
1926	Rappture::PushButton $inner.ybutton \
1927	-onimage [Rappture::icon y-cutplane-green] \
1928	-offimage [Rappture::icon y-cutplane-green] \
1929	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1930	-variable [itcl::scope _settings(-ycutplanevisible)]
1931	}
1932	Rappture::Tooltip::for $itk_component(yCutButton) \
1933	"Toggle the Y-axis cutplane on/off"
1934	$itk_component(yCutButton) select
1935
1936	itk_component add yCutScale {
1937	::scale $inner.yval -from 100 -to 0 \
1938	-width 10 -orient vertical -showvalue 1 \
1939	-borderwidth 1 -highlightthickness 0 \
1940	-command [itcl::code $this EventuallySetCutplane y] \
1941	-variable [itcl::scope _settings(-ycutplaneposition)] \
1942	-foreground green3 -font "Arial 9 bold"
1943	} {
1944	usual
1945	ignore -borderwidth -highlightthickness -foreground -font
1946	}
1947	Rappture::Tooltip::for $itk_component(yCutScale) \
1948	"@[itcl::code $this Slice tooltip y]"
1949	# Set the default cutplane value before disabling the scale.
1950	$itk_component(yCutScale) set 50
1951	$itk_component(yCutScale) configure -state disabled
1952
1953	# Z-value slicer...
1954	itk_component add zCutButton {
1955	Rappture::PushButton $inner.zbutton \
1956	-onimage [Rappture::icon z-cutplane-blue] \
1957	-offimage [Rappture::icon z-cutplane-blue] \
1958	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1959	-variable [itcl::scope _settings(-zcutplanevisible)]
1960	}
1961	Rappture::Tooltip::for $itk_component(zCutButton) \
1962	"Toggle the Z-axis cutplane on/off"
1963	$itk_component(zCutButton) select
1964
1965	itk_component add zCutScale {
1966	::scale $inner.zval -from 100 -to 0 \
1967	-width 10 -orient vertical -showvalue 1 \
1968	-borderwidth 1 -highlightthickness 0 \
1969	-command [itcl::code $this EventuallySetCutplane z] \
1970	-variable [itcl::scope _settings(-zcutplaneposition)] \
1971	-foreground blue3 -font "Arial 9 bold"
1972	} {
1973	usual
1974	ignore -borderwidth -highlightthickness -foreground -font
1975	}
1976	$itk_component(zCutScale) set 50
1977	$itk_component(zCutScale) configure -state disabled
1978	Rappture::Tooltip::for $itk_component(zCutScale) \
1979	"@[itcl::code $this Slice tooltip z]"
1980
1981	blt::table $inner \
1982	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1983	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
1984	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
1985	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1986	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1987	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
1988	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
1989	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
1990	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
1991	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
1992	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
1993
1994	blt::table configure $inner r* c* -resize none
1995	blt::table configure $inner r7 c4 -resize expand
1996	}
1997
1998	#
1999	# camera --
2000	#
2001	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2002	switch -- $option {
2003	"show" {
2004	puts [array get _view]
2005	}
2006	"set" {
2007	set what [lindex $args 0]
2008	set x $_view($what)
2009	set code [catch { string is double $x } result]
2010	if { $code != 0 \|\| !$result } {
2011	return
2012	}
2013	switch -- $what {
2014	"-ortho" {
2015	if {$_view($what)} {
2016	SendCmd "camera mode ortho"
2017	} else {
2018	SendCmd "camera mode persp"
2019	}
2020	}
2021	"-xpan" - "-ypan" {
2022	PanCamera
2023	}
2024	"-qx" - "-qy" - "-qz" - "-qw" {
2025	set q [ViewToQuaternion]
2026	$_arcball quaternion $q
2027	EventuallyRotate $q
2028	}
2029	"-zoom" {
2030	SendCmd "camera zoom $_view($what)"
2031	}
2032	}
2033	}
2034	}
2035	}
2036
2037	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2038	set bytes ""
2039	foreach dataobj [get] {
2040	foreach comp [$dataobj components] {
2041	set tag $dataobj-$comp
2042	set contents [$dataobj vtkdata $comp]
2043	append bytes "$contents\n"
2044	}
2045	}
2046	return [list .vtk $bytes]
2047	}
2048
2049	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2050	if { [image width $_image(download)] > 0 &&
2051	[image height $_image(download)] > 0 } {
2052	set bytes [$_image(download) data -format "jpeg -quality 100"]
2053	set bytes [Rappture::encoding::decode -as b64 $bytes]
2054	return [list .jpg $bytes]
2055	}
2056	return ""
2057	}
2058
2059	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2060	Rappture::Balloon $popup \
2061	-title "[Rappture::filexfer::label downloadWord] as..."
2062	set inner [$popup component inner]
2063	label $inner.summary -text "" -anchor w
2064	radiobutton $inner.vtk_button -text "VTK data file" \
2065	-variable [itcl::scope _downloadPopup(format)] \
2066	-font "Arial 9" \
2067	-value vtk
2068	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2069	radiobutton $inner.image_button -text "Image File" \
2070	-variable [itcl::scope _downloadPopup(format)] \
2071	-value image
2072	Rappture::Tooltip::for $inner.image_button \
2073	"Save as digital image."
2074
2075	button $inner.ok -text "Save" \
2076	-highlightthickness 0 -pady 2 -padx 3 \
2077	-command $command \
2078	-compound left \
2079	-image [Rappture::icon download]
2080
2081	button $inner.cancel -text "Cancel" \
2082	-highlightthickness 0 -pady 2 -padx 3 \
2083	-command [list $popup deactivate] \
2084	-compound left \
2085	-image [Rappture::icon cancel]
2086
2087	blt::table $inner \
2088	0,0 $inner.summary -cspan 2 \
2089	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2090	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2091	4,1 $inner.cancel -width .9i -fill y \
2092	4,0 $inner.ok -padx 2 -width .9i -fill y
2093	blt::table configure $inner r3 -height 4
2094	blt::table configure $inner r4 -pady 4
2095	raise $inner.image_button
2096	$inner.vtk_button invoke
2097	return $inner
2098	}
2099
2100	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2101	# Parse style string.
2102	set tag $dataobj-$comp
2103	array set style {
2104	-color BCGYR
2105	-constcolor white
2106	-edgecolor black
2107	-edges 0
2108	-lighting 1
2109	-linewidth 1.0
2110	-mode lines
2111	-numseeds 200
2112	-opacity 1.0
2113	-seeds 1
2114	-seedcolor white
2115	-streamlineslength 0.7
2116	-surfacecolor white
2117	-surfaceedgecolor black
2118	-surfaceedges 0
2119	-surfacelighting 1
2120	-surfaceopacity 0.4
2121	-surfacevisible 1
2122	-surfacewireframe 0
2123	-visible 1
2124	}
2125	array set style [$dataobj style $comp]
2126
2127	StartBufferingCommands
2128	SendCmd "streamlines add $tag"
2129	SendCmd "streamlines color [Color2RGB $style(-constcolor)] $tag"
2130	SendCmd "streamlines edges $style(-edges) $tag"
2131	SendCmd "streamlines linecolor [Color2RGB $style(-edgecolor)] $tag"
2132	SendCmd "streamlines linewidth $style(-linewidth) $tag"
2133	SendCmd "streamlines lighting $style(-lighting) $tag"
2134	SendCmd "streamlines opacity $style(-opacity) $tag"
2135	SendCmd "streamlines seed color [Color2RGB $style(-seedcolor)] $tag"
2136	SendCmd "streamlines seed visible $style(-seeds) $tag"
2137	SendCmd "streamlines visible $style(-visible) $tag"
2138	set seeds [$dataobj hints seeds]
2139	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2140	set length [string length $seeds]
2141	SendCmd "streamlines seed fmesh $style(-numseeds) data follows $length $tag"
2142	SendData $seeds
2143	set _seeds($dataobj) 1
2144	}
2145	set _settings(-streamlineslighting) $style(-lighting)
2146	$itk_component(streammode) value $style(-mode)
2147	AdjustSetting -streamlinesmode
2148	set _settings(-streamlinesnumseeds) $style(-numseeds)
2149	set _settings(-streamlinesopacity) [expr $style(-opacity) * 100.0]
2150	set _settings(-streamlineslength) [expr $style(-streamlineslength) * 100.0]
2151	set _settings(-streamlinesseedsvisible) $style(-seeds)
2152	set _settings(-streamlinesvisible) $style(-visible)
2153
2154	SendCmd "cutplane add $tag"
2155
2156	SendCmd "polydata add $tag"
2157	SendCmd "polydata color [Color2RGB $style(-surfacecolor)] $tag"
2158	SendCmd "polydata colormode constant {} $tag"
2159	SendCmd "polydata edges $style(-surfaceedges) $tag"
2160	SendCmd "polydata linecolor [Color2RGB $style(-surfaceedgecolor)] $tag"
2161	SendCmd "polydata lighting $style(-surfacelighting) $tag"
2162	SendCmd "polydata opacity $style(-surfaceopacity) $tag"
2163	SendCmd "polydata wireframe $style(-surfacewireframe) $tag"
2164	SendCmd "polydata visible $style(-surfacevisible) $tag"
2165	set _settings(-surfaceedges) $style(-surfaceedges)
2166	set _settings(-surfacelighting) $style(-surfacelighting)
2167	set _settings(-surfaceopacity) [expr $style(-surfaceopacity) * 100.0]
2168	set _settings(-surfacewireframe) $style(-surfacewireframe)
2169	set _settings(-surfacevisible) $style(-surfacevisible)
2170	StopBufferingCommands
2171	SetCurrentColormap $style(-color)
2172	$itk_component(colormap) value $style(-color)
2173	}
2174
2175	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2176	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2177	return 0
2178	}
2179	return 1
2180	}
2181
2182	# ----------------------------------------------------------------------
2183	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2184	#
2185	# Invoked automatically whenever the "legend" command comes in from
2186	# the rendering server. Indicates that binary image data with the
2187	# specified <size> will follow.
2188	# ----------------------------------------------------------------------
2189	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title min max size } {
2190	set _legendPending 0
2191	set _title $title
2192	regsub {\(mag\)} $title "" _title
2193	if { [IsConnected] } {
2194	set bytes [ReceiveBytes $size]
2195	if { ![info exists _image(legend)] } {
2196	set _image(legend) [image create photo]
2197	}
2198	$_image(legend) configure -data $bytes
2199	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2200	if { [catch {DrawLegend} errs] != 0 } {
2201	puts stderr errs=$errs
2202	}
2203	}
2204	}
2205
2206	#
2207	# DrawLegend --
2208	#
2209	# Draws the legend in it's own canvas which resides to the right
2210	# of the contour plot area.
2211	#
2212	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2213	set fname $_curFldName
2214	set c $itk_component(view)
2215	set w [winfo width $c]
2216	set h [winfo height $c]
2217	set font "Arial 8"
2218	set lineht [font metrics $font -linespace]
2219
2220	if { [info exists _fields($fname)] } {
2221	foreach { title units } $_fields($fname) break
2222	if { $units != "" } {
2223	set title [format "%s (%s)" $title $units]
2224	}
2225	} else {
2226	set title $fname
2227	}
2228	if { $_settings(-legendvisible) } {
2229	set x [expr $w - 2]
2230	if { [$c find withtag "legend"] == "" } {
2231	set y 2
2232	$c create text $x $y \
2233	-anchor ne \
2234	-fill $itk_option(-plotforeground) -tags "title legend" \
2235	-font $font
2236	incr y $lineht
2237	$c create text $x $y \
2238	-anchor ne \
2239	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2240	-font $font
2241	incr y $lineht
2242	$c create image $x $y \
2243	-anchor ne \
2244	-image $_image(legend) -tags "colormap legend"
2245	$c create text $x [expr {$h-2}] \
2246	-anchor se \
2247	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2248	-font $font
2249	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2250	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2251	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2252	}
2253	$c bind title <ButtonPress> [itcl::code $this LegendTitleAction post]
2254	$c bind title <Enter> [itcl::code $this LegendTitleAction enter]
2255	$c bind title <Leave> [itcl::code $this LegendTitleAction leave]
2256	# Reset the item coordinates according the current size of the plot.
2257	$c itemconfigure title -text $title
2258	if { [info exists _limits($_curFldName)] } {
2259	foreach {vmin vmax} $_limits($_curFldName) break
2260	$c itemconfigure vmin -text [format %g $vmin]
2261	$c itemconfigure vmax -text [format %g $vmax]
2262	}
2263	set y 2
2264	$c coords title $x $y
2265	incr y $lineht
2266	$c coords vmax $x $y
2267	incr y $lineht
2268	$c coords colormap $x $y
2269	$c coords vmin $x [expr {$h - 2}]
2270	}
2271	}
2272
2273	#
2274	# EnterLegend --
2275	#
2276	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2277	SetLegendTip $x $y
2278	}
2279
2280	#
2281	# MotionLegend --
2282	#
2283	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2284	Rappture::Tooltip::tooltip cancel
2285	set c $itk_component(view)
2286	SetLegendTip $x $y
2287	}
2288
2289	#
2290	# LeaveLegend --
2291	#
2292	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2293	Rappture::Tooltip::tooltip cancel
2294	.rappturetooltip configure -icon ""
2295	}
2296
2297	#
2298	# SetLegendTip --
2299	#
2300	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2301	set c $itk_component(view)
2302	set w [winfo width $c]
2303	set h [winfo height $c]
2304	set font "Arial 8"
2305	set lineht [font metrics $font -linespace]
2306
2307	set imgHeight [image height $_image(legend)]
2308	set coords [$c coords colormap]
2309	set imgX [expr $w - [image width $_image(legend)] - 2]
2310	set imgY [expr $y - 2 * ($lineht + 2)]
2311
2312	if { [info exists _fields($_title)] } {
2313	foreach { title units } $_fields($_title) break
2314	if { $units != "" } {
2315	set title [format "%s (%s)" $title $units]
2316	}
2317	} else {
2318	set title $_title
2319	}
2320	# Make a swatch of the selected color
2321	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2322	#puts stderr "out of range: $imgY"
2323	return
2324	}
2325	if { ![info exists _image(swatch)] } {
2326	set _image(swatch) [image create photo -width 24 -height 24]
2327	}
2328	set color [eval format "\#%02x%02x%02x" $pixel]
2329	$_image(swatch) put black -to 0 0 23 23
2330	$_image(swatch) put $color -to 1 1 22 22
2331	.rappturetooltip configure -icon $_image(swatch)
2332
2333	# Compute the value of the point
2334	if { [info exists _limits($_curFldName)] } {
2335	foreach {vmin vmax} $_limits($_curFldName) break
2336	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2337	set value [expr $t * ($vmax - $vmin) + $vmin]
2338	} else {
2339	set value 0.0
2340	}
2341	set tipx [expr $x + 15]
2342	set tipy [expr $y - 5]
2343	Rappture::Tooltip::text $c "$title $value"
2344	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2345	}
2346
2347	# ----------------------------------------------------------------------
2348	# USAGE: Slice move x\|y\|z <newval>
2349	#
2350	# Called automatically when the user drags the slider to move the
2351	# cut plane that slices 3D data. Gets the current value from the
2352	# slider and moves the cut plane to the appropriate point in the
2353	# data set.
2354	# ----------------------------------------------------------------------
2355	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2356	switch -- $option {
2357	"move" {
2358	set axis [lindex $args 0]
2359	set newval [lindex $args 1]
2360	if {[llength $args] != 2} {
2361	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2362	}
2363	set newpos [expr {0.01*$newval}]
2364	SendCmd "cutplane slice $axis $newpos"
2365	}
2366	"tooltip" {
2367	set axis [lindex $args 0]
2368	set val [$itk_component(${axis}CutScale) get]
2369	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2370	}
2371	default {
2372	error "bad option \"$option\": should be axis, move, or tooltip"
2373	}
2374	}
2375	}
2376
2377	# ----------------------------------------------------------------------
2378	# USAGE: LegendTitleAction post
2379	# USAGE: LegendTitleAction enter
2380	# USAGE: LegendTitleAction leave
2381	# USAGE: LegendTitleAction save
2382	#
2383	# Used internally to handle the dropdown list for the fields menu combobox.
2384	# The post option is invoked when the field title is pressed to launch the
2385	# dropdown. The enter option is invoked when the user mouses over the field
2386	# title. The leave option is invoked when the user moves the mouse away
2387	# from the field title. The save option is invoked whenever there is a
2388	# selection from the list, to alert the visualization server.
2389	# ----------------------------------------------------------------------
2390	itcl::body Rappture::VtkStreamlinesViewer::LegendTitleAction {option} {
2391	set c $itk_component(view)
2392	switch -- $option {
2393	post {
2394	foreach { x1 y1 x2 y2 } [$c bbox title] break
2395	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2396	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2397	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2398	tk_popup $itk_component(fieldmenu) $x $y
2399	}
2400	enter {
2401	$c itemconfigure title -fill red
2402	}
2403	leave {
2404	$c itemconfigure title -fill white
2405	}
2406	save {
2407	$itk_component(field) value $_curFldLabel
2408	AdjustSetting -field
2409	}
2410	default {
2411	error "bad option \"$option\": should be post, enter, leave or save"
2412	}
2413	}
2414	}
2415
2416	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2417	array set positions {
2418	front "1 0 0 0"
2419	back "0 0 1 0"
2420	left "0.707107 0 -0.707107 0"
2421	right "0.707107 0 0.707107 0"
2422	top "0.707107 -0.707107 0 0"
2423	bottom "0.707107 0.707107 0 0"
2424	}
2425	foreach name { -qw -qx -qy -qz } value $positions($side) {
2426	set _view($name) $value
2427	}
2428	set q [ViewToQuaternion]
2429	$_arcball quaternion $q
2430	SendCmd "camera orient $q"
2431	SendCmd "camera reset"
2432	set _view(-xpan) 0
2433	set _view(-ypan) 0
2434	set _view(-zoom) 1.0
2435	}

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