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source: branches/uiuc_vtk_viewers/gui/scripts/vtkstreamlinesviewer.tcl @ 5033

Last change on this file since 5033 was 4942, checked in by ldelgass, 10 years ago
merge r4928 from 1.3 branch (remove updates)
File size: 83.7 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 Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	package require Img
17
18	option add *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 { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method 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 colors }
69	private method BuildCutplaneTab {}
70	private method BuildDownloadPopup { widget command }
71	private method BuildStreamsTab {}
72	private method BuildVolumeTab {}
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 DoResize {}
79	private method DoReseed {}
80	private method DoRotate {}
81	private method EnterLegend { x y }
82	private method EventuallyResize { w h }
83	private method EventuallyReseed { numPoints }
84	private method EventuallyRotate { q }
85	private method EventuallySetCutplane { axis args }
86	private method GetImage { args }
87	private method GetVtkData { args }
88	private method InitSettings { args }
89	private method IsValidObject { dataobj }
90	private method LeaveLegend {}
91	private method MotionLegend { x y }
92	private method Pan {option x y}
93	private method PanCamera {}
94	private method Pick {x y}
95	private method QuaternionToView { q } {
96	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
97	}
98	private method Rebuild {}
99	private method ReceiveDataset { args }
100	private method ReceiveImage { args }
101	private method ReceiveLegend { colormap title vmin vmax size }
102	private method RequestLegend {}
103	private method Rotate {option x y}
104	private method SetColormap { dataobj comp }
105	private method ChangeColormap { dataobj comp color }
106	private method SetLegendTip { x y }
107	private method SetObjectStyle { dataobj comp }
108	private method Slice {option args}
109	private method SetOrientation { side }
110	private method ViewToQuaternion {} {
111	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
112	}
113	private method Zoom {option}
114
115	private variable _arcball ""
116
117	private variable _dlist "" ; # list of data objects
118	private variable _obj2datasets
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 _dataset2style ;# maps dataobj-component to transfunc
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 _style; # Array of current component styles.
131	private variable _initialStyle; # Array of initial component styles.
132	private variable _reset 1; # indicates if camera needs to be reset
133	# to starting position.
134
135	private variable _first "" ; # This is the topmost dataset.
136	private variable _start 0
137	private variable _title ""
138	private variable _seeds
139
140	common _downloadPopup; # download options from popup
141	private common _hardcopy
142	private variable _width 0
143	private variable _height 0
144	private variable _resizePending 0
145	private variable _reseedPending 0
146	private variable _rotatePending 0
147	private variable _cutplanePending 0
148	private variable _legendPending 0
149	private variable _vectorFields
150	private variable _scalarFields
151	private variable _fields
152	private variable _curFldName ""
153	private variable _curFldLabel ""
154	private variable _field ""
155	private variable _numSeeds 200
156	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
157	}
158
159	itk::usual VtkStreamlinesViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
168	package require vtk
169	set _serverType "vtkvis"
170
171	EnableWaitDialog 2000
172
173	# Rebuild event
174	$_dispatcher register !rebuild
175	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
176
177	# Resize event
178	$_dispatcher register !resize
179	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
180
181	# Reseed event
182	$_dispatcher register !reseed
183	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
184
185	# Rotate event
186	$_dispatcher register !rotate
187	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
188
189	# Legend event
190	$_dispatcher register !legend
191	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
192
193	# X-Cutplane event
194	$_dispatcher register !xcutplane
195	$_dispatcher dispatch $this !xcutplane \
196	"[itcl::code $this AdjustSetting -cutplanexposition]; list"
197
198	# Y-Cutplane event
199	$_dispatcher register !ycutplane
200	$_dispatcher dispatch $this !ycutplane \
201	"[itcl::code $this AdjustSetting -cutplaneyposition]; list"
202
203	# Z-Cutplane event
204	$_dispatcher register !zcutplane
205	$_dispatcher dispatch $this !zcutplane \
206	"[itcl::code $this AdjustSetting -cutplanezposition]; list"
207
208	#
209	# Populate parser with commands handle incoming requests
210	#
211	$_parser alias image [itcl::code $this ReceiveImage]
212	$_parser alias dataset [itcl::code $this ReceiveDataset]
213	$_parser alias legend [itcl::code $this ReceiveLegend]
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 [subst {
230	-axesvisible 1
231	-axislabelsvisible 1
232	-axisminorticks 1
233	-axismode "static"
234	-cutplaneedges 0
235	-cutplanelighting 1
236	-cutplaneopacity 100
237	-cutplanevisible 0
238	-cutplanewireframe 0
239	-cutplanexposition 50
240	-cutplanexvisible 1
241	-cutplaneyposition 50
242	-cutplaneyvisible 1
243	-cutplanezposition 50
244	-cutplanezvisible 1
245	-legendvisible 1
246	-streamlineslighting 1
247	-streamlinesmode lines
248	-streamlinesnumseeds 200
249	-streamlinesopacity 100
250	-streamlinesscale 1
251	-streamlinesseedsvisible 0
252	-streamlinesvisible 1
253	-volumeedges 0
254	-volumelighting 1
255	-volumeopacity 40
256	-volumevisible 1
257	-volumewireframe 0
258	-xgrid 0
259	-ygrid 0
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 no
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 <4> [itcl::code $this Zoom in 0.25]
281	bind $c <5> [itcl::code $this Zoom out 0.25]
282	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
283	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
284	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
285	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
286	bind $c <Enter> "focus %W"
287	bind $c <Control-F1> [itcl::code $this ToggleConsole]
288
289	# Fix the scrollregion in case we go off screen
290	$c configure -scrollregion [$c bbox all]
291
292	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
293	set _map(cwidth) -1
294	set _map(cheight) -1
295	set _map(zoom) 1.0
296	set _map(original) ""
297
298	set f [$itk_component(main) component controls]
299	itk_component add reset {
300	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon reset-view] \
303	-command [itcl::code $this Zoom reset]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(reset) -side top -padx 2 -pady 2
309	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
310
311	itk_component add zoomin {
312	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
313	-highlightthickness 0 \
314	-image [Rappture::icon zoom-in] \
315	-command [itcl::code $this Zoom in]
316	} {
317	usual
318	ignore -highlightthickness
319	}
320	pack $itk_component(zoomin) -side top -padx 2 -pady 2
321	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
322
323	itk_component add zoomout {
324	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
325	-highlightthickness 0 \
326	-image [Rappture::icon zoom-out] \
327	-command [itcl::code $this Zoom out]
328	} {
329	usual
330	ignore -highlightthickness
331	}
332	pack $itk_component(zoomout) -side top -padx 2 -pady 2
333	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
334
335	itk_component add volume {
336	Rappture::PushButton $f.volume \
337	-onimage [Rappture::icon volume-on] \
338	-offimage [Rappture::icon volume-off] \
339	-variable [itcl::scope _settings(-volumevisible)] \
340	-command [itcl::code $this AdjustSetting -volumevisible]
341	}
342	$itk_component(volume) select
343	Rappture::Tooltip::for $itk_component(volume) \
344	"Don't display the volume"
345	pack $itk_component(volume) -padx 2 -pady 2
346
347	itk_component add streamlines {
348	Rappture::PushButton $f.streamlines \
349	-onimage [Rappture::icon streamlines-on] \
350	-offimage [Rappture::icon streamlines-off] \
351	-variable [itcl::scope _settings(-streamlinesvisible)] \
352	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
353	}
354	$itk_component(streamlines) select
355	Rappture::Tooltip::for $itk_component(streamlines) \
356	"Toggle the streamlines on/off"
357	pack $itk_component(streamlines) -padx 2 -pady 2
358
359	itk_component add cutplane {
360	Rappture::PushButton $f.cutplane \
361	-onimage [Rappture::icon cutbutton] \
362	-offimage [Rappture::icon cutbutton] \
363	-variable [itcl::scope _settings(-cutplanevisible)] \
364	-command [itcl::code $this AdjustSetting -cutplanevisible]
365	}
366	Rappture::Tooltip::for $itk_component(cutplane) \
367	"Show/Hide cutplanes"
368	pack $itk_component(cutplane) -padx 2 -pady 2
369
370
371	if { [catch {
372	BuildVolumeTab
373	BuildStreamsTab
374	BuildCutplaneTab
375	BuildAxisTab
376	BuildCameraTab
377	} errs] != 0 } {
378	puts stderr errs=$errs
379	}
380	# Legend
381
382	set _image(legend) [image create photo]
383	itk_component add legend {
384	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
385	} {
386	usual
387	ignore -highlightthickness
388	rename -background -plotbackground plotBackground Background
389	}
390
391	# Hack around the Tk panewindow. The problem is that the requested
392	# size of the 3d view isn't set until an image is retrieved from
393	# the server. So the panewindow uses the tiny size.
394	set w 10000
395	pack forget $itk_component(view)
396	blt::table $itk_component(plotarea) \
397	0,0 $itk_component(view) -fill both -reqwidth $w
398	blt::table configure $itk_component(plotarea) c1 -resize none
399
400	# Bindings for rotation via mouse
401	bind $itk_component(view) <ButtonPress-1> \
402	[itcl::code $this Rotate click %x %y]
403	bind $itk_component(view) <B1-Motion> \
404	[itcl::code $this Rotate drag %x %y]
405	bind $itk_component(view) <ButtonRelease-1> \
406	[itcl::code $this Rotate release %x %y]
407
408	# Bindings for panning via mouse
409	bind $itk_component(view) <ButtonPress-2> \
410	[itcl::code $this Pan click %x %y]
411	bind $itk_component(view) <B2-Motion> \
412	[itcl::code $this Pan drag %x %y]
413	bind $itk_component(view) <ButtonRelease-2> \
414	[itcl::code $this Pan release %x %y]
415
416	#bind $itk_component(view) <ButtonRelease-3> \
417	# [itcl::code $this Pick %x %y]
418
419	# Bindings for panning via keyboard
420	bind $itk_component(view) <KeyPress-Left> \
421	[itcl::code $this Pan set -10 0]
422	bind $itk_component(view) <KeyPress-Right> \
423	[itcl::code $this Pan set 10 0]
424	bind $itk_component(view) <KeyPress-Up> \
425	[itcl::code $this Pan set 0 -10]
426	bind $itk_component(view) <KeyPress-Down> \
427	[itcl::code $this Pan set 0 10]
428	bind $itk_component(view) <Shift-KeyPress-Left> \
429	[itcl::code $this Pan set -2 0]
430	bind $itk_component(view) <Shift-KeyPress-Right> \
431	[itcl::code $this Pan set 2 0]
432	bind $itk_component(view) <Shift-KeyPress-Up> \
433	[itcl::code $this Pan set 0 -2]
434	bind $itk_component(view) <Shift-KeyPress-Down> \
435	[itcl::code $this Pan set 0 2]
436
437	# Bindings for zoom via keyboard
438	bind $itk_component(view) <KeyPress-Prior> \
439	[itcl::code $this Zoom out]
440	bind $itk_component(view) <KeyPress-Next> \
441	[itcl::code $this Zoom in]
442
443	bind $itk_component(view) <Enter> "focus $itk_component(view)"
444
445	if {[string equal "x11" [tk windowingsystem]]} {
446	# Bindings for zoom via mouse
447	bind $itk_component(view) <4> [itcl::code $this Zoom out]
448	bind $itk_component(view) <5> [itcl::code $this Zoom in]
449	}
450
451	set _image(download) [image create photo]
452
453	eval itk_initialize $args
454	Connect
455	}
456
457	# ----------------------------------------------------------------------
458	# DESTRUCTOR
459	# ----------------------------------------------------------------------
460	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
461	Disconnect
462	image delete $_image(plot)
463	image delete $_image(download)
464	catch { blt::arcball destroy $_arcball }
465	}
466
467	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
468	if { $_width < 2 } {
469	set _width 500
470	}
471	if { $_height < 2 } {
472	set _height 500
473	}
474	set _start [clock clicks -milliseconds]
475	SendCmd "screen size $_width $_height"
476
477	set _legendPending 1
478	set _resizePending 0
479	}
480
481	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
482	SendCmd "camera orient [ViewToQuaternion]"
483	set _rotatePending 0
484	}
485
486	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
487	foreach dataset [CurrentDatasets -visible] {
488	foreach {dataobj comp} [split $dataset -] break
489	# This command works for either random or fmesh seeds
490	SendCmd "streamlines seed numpts $_numSeeds $dataset"
491	}
492	set _reseedPending 0
493	}
494
495	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
496	set _width $w
497	set _height $h
498	$_arcball resize $w $h
499	if { !$_resizePending } {
500	set _resizePending 1
501	$_dispatcher event -after 400 !resize
502	}
503	}
504
505	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
506	set _numSeeds $numPoints
507	if { !$_reseedPending } {
508	set _reseedPending 1
509	$_dispatcher event -after 600 !reseed
510	}
511	}
512
513	set rotate_delay 100
514
515	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
516	QuaternionToView $q
517	if { !$_rotatePending } {
518	set _rotatePending 1
519	global rotate_delay
520	$_dispatcher event -after $rotate_delay !rotate
521	}
522	}
523
524	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
525	if { !$_cutplanePending } {
526	set _cutplanePending 1
527	$_dispatcher event -after 100 !${axis}cutplane
528	}
529	}
530
531	# ----------------------------------------------------------------------
532	# USAGE: add <dataobj> ?<settings>?
533	#
534	# Clients use this to add a data object to the plot. The optional
535	# <settings> are used to configure the plot. Allowed settings are
536	# -color, -brightness, -width, -linestyle, and -raise.
537	# ----------------------------------------------------------------------
538	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
539	array set params {
540	-color auto
541	-width 1
542	-linestyle solid
543	-brightness 0
544	-raise 0
545	-description ""
546	-param ""
547	-type ""
548	}
549	array set params $settings
550	set params(-description) ""
551	set params(-param) ""
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	# ----------------------------------------------------------------------
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 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 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
839	# 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 _data
855	array unset _colormaps
856	array unset _seeds
857	array unset _dataset2style
858	array unset _obj2datasets
859	}
860
861	# ----------------------------------------------------------------------
862	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
863	#
864	# Invoked automatically whenever the "image" command comes in from
865	# the rendering server. Indicates that binary image data with the
866	# specified <size> will follow.
867	# ----------------------------------------------------------------------
868	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
869	array set info {
870	-token "???"
871	-bytes 0
872	-type image
873	}
874	array set info $args
875	set bytes [ReceiveBytes $info(-bytes)]
876	if { $info(-type) == "image" } {
877	if 0 {
878	set f [open "last.ppm" "w"]
879	fconfigure $f -encoding binary
880	puts -nonewline $f $bytes
881	close $f
882	}
883	$_image(plot) configure -data $bytes
884	set time [clock seconds]
885	set date [clock format $time]
886	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
887	if { $_start > 0 } {
888	set finish [clock clicks -milliseconds]
889	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
890	set _start 0
891	}
892	} elseif { $info(type) == "print" } {
893	set tag $this-print-$info(-token)
894	set _hardcopy($tag) $bytes
895	}
896	if { $_legendPending } {
897	RequestLegend
898	}
899	}
900
901	#
902	# ReceiveDataset --
903	#
904	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
905	if { ![isconnected] } {
906	return
907	}
908	set option [lindex $args 0]
909	switch -- $option {
910	"scalar" {
911	set option [lindex $args 1]
912	switch -- $option {
913	"world" {
914	foreach { x y z value tag } [lrange $args 2 end] break
915	}
916	"pixel" {
917	foreach { x y value tag } [lrange $args 2 end] break
918	}
919	}
920	}
921	"vector" {
922	set option [lindex $args 1]
923	switch -- $option {
924	"world" {
925	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
926	}
927	"pixel" {
928	foreach { x y vx vy vz tag } [lrange $args 2 end] break
929	}
930	}
931	}
932	"names" {
933	foreach { name } [lindex $args 1] {
934	#puts stderr "Dataset: $name"
935	}
936	}
937	default {
938	error "unknown dataset option \"$option\" from server"
939	}
940	}
941	}
942
943	# ----------------------------------------------------------------------
944	# USAGE: Rebuild
945	#
946	# Called automatically whenever something changes that affects the
947	# data in the widget. Clears any existing data and rebuilds the
948	# widget to display new data.
949	# ----------------------------------------------------------------------
950	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
951	set w [winfo width $itk_component(view)]
952	set h [winfo height $itk_component(view)]
953	if { $w < 2 \|\| $h < 2 } {
954	$_dispatcher event -idle !rebuild
955	return
956	}
957
958	# Turn on buffering of commands to the server. We don't want to
959	# be preempted by a server disconnect/reconnect (which automatically
960	# generates a new call to Rebuild).
961	StartBufferingCommands
962	set _legendPending 1
963
964	set _first ""
965	if { $_reset } {
966	set _width $w
967	set _height $h
968	$_arcball resize $w $h
969	DoResize
970	InitSettings -xgrid -ygrid -zgrid -axismode \
971	-axesvisible -axislabelsvisible -axisminorticks
972	# This "imgflush" is to force an image returned before vtkvis starts
973	# reading a (big) dataset. This will display an empty plot with axes
974	# at the correct image size.
975	SendCmd "imgflush"
976	}
977
978	set _first ""
979	SendCmd "dataset visible 0"
980	foreach dataobj [get -objects] {
981	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
982	set _first $dataobj
983	}
984	set _obj2datasets($dataobj) ""
985	foreach comp [$dataobj components] {
986	set tag $dataobj-$comp
987	if { ![info exists _datasets($tag)] } {
988	set bytes [$dataobj vtkdata $comp]
989	set length [string length $bytes]
990	if 0 {
991	set f [open /tmp/vtkstreamlines.vtk "w"]
992	fconfigure $f -translation binary -encoding binary
993	puts -nonewline $f $bytes
994	close $f
995	}
996	if { $_reportClientInfo } {
997	set info {}
998	lappend info "tool_id" [$dataobj hints toolid]
999	lappend info "tool_name" [$dataobj hints toolname]
1000	lappend info "tool_title" [$dataobj hints tooltitle]
1001	lappend info "tool_command" [$dataobj hints toolcommand]
1002	lappend info "tool_revision" [$dataobj hints toolrevision]
1003	lappend info "dataset_label" [$dataobj hints label]
1004	lappend info "dataset_size" $length
1005	lappend info "dataset_tag" $tag
1006	SendCmd "clientinfo [list $info]"
1007	}
1008	SendCmd "dataset add $tag data follows $length"
1009	append _outbuf $bytes
1010	set _datasets($tag) 1
1011	SetObjectStyle $dataobj $comp
1012	}
1013	lappend _obj2datasets($dataobj) $tag
1014	if { [info exists _obj2ovride($dataobj-raise)] } {
1015	SendCmd "dataset visible 1 $tag"
1016	}
1017	}
1018	}
1019	if {"" != $_first} {
1020	set location [$_first hints camera]
1021	if { $location != "" } {
1022	array set view $location
1023	}
1024	foreach axis { x y z } {
1025	set label [$_first hints ${axis}label]
1026	if { $label != "" } {
1027	SendCmd [list axis name $axis $label]
1028	}
1029	set units [$_first hints ${axis}units]
1030	if { $units != "" } {
1031	SendCmd [list axis units $axis $units]
1032	}
1033	}
1034	$itk_component(field) choices delete 0 end
1035	$itk_component(fieldmenu) delete 0 end
1036	array unset _fields
1037	set _curFldName ""
1038	foreach cname [$_first components] {
1039	foreach fname [$_first fieldnames $cname] {
1040	if { [info exists _fields($fname)] } {
1041	continue
1042	}
1043	foreach { label units components } \
1044	[$_first fieldinfo $fname] break
1045	$itk_component(field) choices insert end "$fname" "$label"
1046	$itk_component(fieldmenu) add radiobutton -label "$label" \
1047	-value $label -variable [itcl::scope _curFldLabel] \
1048	-selectcolor red \
1049	-activebackground $itk_option(-plotbackground) \
1050	-activeforeground $itk_option(-plotforeground) \
1051	-font "Arial 8" \
1052	-command [itcl::code $this Combo invoke]
1053	set _fields($fname) [list $label $units $components]
1054	if { $_curFldName == "" } {
1055	set _curFldName $fname
1056	set _curFldLabel $label
1057	}
1058	}
1059	}
1060	$itk_component(field) value $_curFldLabel
1061	}
1062
1063	if { $_reset } {
1064	InitSettings -streamlinesseedsvisible -streamlinesopacity \
1065	-streamlinesvisible -streamlinescolormap \
1066	-streamlineslighting \
1067	-streamlinescolormap -field \
1068	-volumevisible -volumeedges -volumelighting -volumeopacity \
1069	-volumewireframe \
1070	-cutplanevisible \
1071	-cutplanexposition -cutplaneyposition -cutplanezposition \
1072	-cutplanexvisible -cutplaneyvisible -cutplanezvisible
1073
1074	# Reset the camera and other view parameters
1075	$_arcball quaternion [ViewToQuaternion]
1076	if {$_view(-ortho)} {
1077	SendCmd "camera mode ortho"
1078	} else {
1079	SendCmd "camera mode persp"
1080	}
1081	DoRotate
1082	PanCamera
1083	Zoom reset
1084	SendCmd "camera reset"
1085	set _reset 0
1086	}
1087	# Actually write the commands to the server socket. If it fails, we don't
1088	# care. We're finished here.
1089	blt::busy hold $itk_component(hull)
1090	StopBufferingCommands
1091	blt::busy release $itk_component(hull)
1092	}
1093
1094	# ----------------------------------------------------------------------
1095	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1096	#
1097	# Returns a list of server IDs for the current datasets being displayed. This
1098	# is normally a single ID, but it might be a list of IDs if the current data
1099	# object has multiple components.
1100	# ----------------------------------------------------------------------
1101	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1102	set flag [lindex $args 0]
1103	switch -- $flag {
1104	"-all" {
1105	if { [llength $args] > 1 } {
1106	error "CurrentDatasets: can't specify dataobj after \"-all\""
1107	}
1108	set dlist [get -objects]
1109	}
1110	"-visible" {
1111	if { [llength $args] > 1 } {
1112	set dlist {}
1113	set args [lrange $args 1 end]
1114	foreach dataobj $args {
1115	if { [info exists _obj2ovride($dataobj-raise)] } {
1116	lappend dlist $dataobj
1117	}
1118	}
1119	} else {
1120	set dlist [get -visible]
1121	}
1122	}
1123	default {
1124	set dlist $args
1125	}
1126	}
1127	set rlist ""
1128	foreach dataobj $dlist {
1129	foreach comp [$dataobj components] {
1130	set tag $dataobj-$comp
1131	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1132	lappend rlist $tag
1133	}
1134	}
1135	}
1136	return $rlist
1137	}
1138
1139	# ----------------------------------------------------------------------
1140	# USAGE: Zoom in
1141	# USAGE: Zoom out
1142	# USAGE: Zoom reset
1143	#
1144	# Called automatically when the user clicks on one of the zoom
1145	# controls for this widget. Changes the zoom for the current view.
1146	# ----------------------------------------------------------------------
1147	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1148	switch -- $option {
1149	"in" {
1150	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1151	SendCmd "camera zoom $_view(-zoom)"
1152	}
1153	"out" {
1154	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1155	SendCmd "camera zoom $_view(-zoom)"
1156	}
1157	"reset" {
1158	array set _view {
1159	-qw 0.853553
1160	-qx -0.353553
1161	-qy 0.353553
1162	-qz 0.146447
1163	-xpan 0
1164	-ypan 0
1165	-zoom 1.0
1166	}
1167	if { $_first != "" } {
1168	set location [$_first hints camera]
1169	if { $location != "" } {
1170	array set _view $location
1171	}
1172	}
1173	$_arcball quaternion [ViewToQuaternion]
1174	DoRotate
1175	SendCmd "camera reset"
1176	}
1177	}
1178	}
1179
1180	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1181	set x $_view(-xpan)
1182	set y $_view(-ypan)
1183	SendCmd "camera pan $x $y"
1184	}
1185
1186	# ----------------------------------------------------------------------
1187	# USAGE: Rotate click <x> <y>
1188	# USAGE: Rotate drag <x> <y>
1189	# USAGE: Rotate release <x> <y>
1190	#
1191	# Called automatically when the user clicks/drags/releases in the
1192	# plot area. Moves the plot according to the user's actions.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1195	switch -- $option {
1196	"click" {
1197	$itk_component(view) configure -cursor fleur
1198	set _click(x) $x
1199	set _click(y) $y
1200	}
1201	"drag" {
1202	if {[array size _click] == 0} {
1203	Rotate click $x $y
1204	} else {
1205	set w [winfo width $itk_component(view)]
1206	set h [winfo height $itk_component(view)]
1207	if {$w <= 0 \|\| $h <= 0} {
1208	return
1209	}
1210
1211	if {[catch {
1212	# this fails sometimes for no apparent reason
1213	set dx [expr {double($x-$_click(x))/$w}]
1214	set dy [expr {double($y-$_click(y))/$h}]
1215	}]} {
1216	return
1217	}
1218	if { $dx == 0 && $dy == 0 } {
1219	return
1220	}
1221	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1222	EventuallyRotate $q
1223	set _click(x) $x
1224	set _click(y) $y
1225	}
1226	}
1227	"release" {
1228	Rotate drag $x $y
1229	$itk_component(view) configure -cursor ""
1230	catch {unset _click}
1231	}
1232	default {
1233	error "bad option \"$option\": should be click, drag, release"
1234	}
1235	}
1236	}
1237
1238	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1239	foreach tag [CurrentDatasets -visible] {
1240	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1241	}
1242	}
1243
1244	# ----------------------------------------------------------------------
1245	# USAGE: $this Pan click x y
1246	# $this Pan drag x y
1247	# $this Pan release x y
1248	#
1249	# Called automatically when the user clicks on one of the zoom
1250	# controls for this widget. Changes the zoom for the current view.
1251	# ----------------------------------------------------------------------
1252	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1253	switch -- $option {
1254	"set" {
1255	set w [winfo width $itk_component(view)]
1256	set h [winfo height $itk_component(view)]
1257	set x [expr $x / double($w)]
1258	set y [expr $y / double($h)]
1259	set _view(-xpan) [expr $_view(-xpan) + $x]
1260	set _view(-ypan) [expr $_view(-ypan) + $y]
1261	PanCamera
1262	return
1263	}
1264	"click" {
1265	set _click(x) $x
1266	set _click(y) $y
1267	$itk_component(view) configure -cursor hand1
1268	}
1269	"drag" {
1270	if { ![info exists _click(x)] } {
1271	set _click(x) $x
1272	}
1273	if { ![info exists _click(y)] } {
1274	set _click(y) $y
1275	}
1276	set w [winfo width $itk_component(view)]
1277	set h [winfo height $itk_component(view)]
1278	set dx [expr ($_click(x) - $x)/double($w)]
1279	set dy [expr ($_click(y) - $y)/double($h)]
1280	set _click(x) $x
1281	set _click(y) $y
1282	set _view(-xpan) [expr $_view(-xpan) - $dx]
1283	set _view(-ypan) [expr $_view(-ypan) - $dy]
1284	PanCamera
1285	}
1286	"release" {
1287	Pan drag $x $y
1288	$itk_component(view) configure -cursor ""
1289	}
1290	default {
1291	error "unknown option \"$option\": should set, click, drag, or release"
1292	}
1293	}
1294	}
1295
1296	# ----------------------------------------------------------------------
1297	# USAGE: InitSettings <what> ?<value>?
1298	#
1299	# Used internally to update rendering settings whenever parameters
1300	# change in the popup settings panel. Sends the new settings off
1301	# to the back end.
1302	# ----------------------------------------------------------------------
1303	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1304	foreach spec $args {
1305	if { [info exists _settings($_first${spec})] } {
1306	# Reset global setting with dataobj specific setting
1307	set _settings($spec) $_settings($_first${spec})
1308	}
1309	AdjustSetting $spec
1310	}
1311	}
1312
1313	#
1314	# AdjustSetting --
1315	#
1316	# Changes/updates a specific setting in the widget. There are
1317	# usually user-setable option. Commands are sent to the render
1318	# server.
1319	#
1320	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1321	if { ![isconnected] } {
1322	return
1323	}
1324	switch -- $what {
1325	"-axesvisible" {
1326	set bool $_settings($what)
1327	SendCmd "axis visible all $bool"
1328	}
1329	"-axislabelsvisible" {
1330	set bool $_settings($what)
1331	SendCmd "axis labels all $bool"
1332	}
1333	"-axisminorticks" {
1334	set bool $_settings($what)
1335	SendCmd "axis minticks all $bool"
1336	}
1337	"-axismode" {
1338	set mode [$itk_component(axismode) value]
1339	set mode [$itk_component(axismode) translate $mode]
1340	set _settings($what) $mode
1341	SendCmd "axis flymode $mode"
1342	}
1343	"-cutplaneedges" {
1344	set bool $_settings($what)
1345	SendCmd "cutplane edges $bool"
1346	}
1347	"-cutplanevisible" {
1348	set bool $_settings($what)
1349	SendCmd "cutplane visible $bool"
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	"-cutplanexvisible" - "-cutplaneyvisible" - "-cutplanezvisible" {
1365	set axis [string range $what 9 9]
1366	set bool $_settings($what)
1367	if { $bool } {
1368	$itk_component(${axis}CutScale) configure -state normal \
1369	-troughcolor white
1370	} else {
1371	$itk_component(${axis}CutScale) configure -state disabled \
1372	-troughcolor grey82
1373	}
1374	SendCmd "cutplane axis $axis $bool"
1375	}
1376	"-cutplanexposition" - "-cutplaneyposition" - "-cutplanezposition" {
1377	set axis [string range $what 9 9]
1378	set pos [expr $_settings($what) * 0.01]
1379	SendCmd "cutplane slice ${axis} ${pos}"
1380	set _cutplanePending 0
1381	}
1382	"-field" {
1383	set label [$itk_component(field) value]
1384	set fname [$itk_component(field) translate $label]
1385	set _settings($what) $fname
1386	if { [info exists _fields($fname)] } {
1387	foreach { label units components } $_fields($fname) break
1388	if { $components > 1 } {
1389	set _colorMode vmag
1390	} else {
1391	set _colorMode scalar
1392	}
1393	set _curFldName $fname
1394	set _curFldLabel $label
1395	} else {
1396	puts stderr "unknown field \"$fname\""
1397	return
1398	}
1399	# Get the new limits because the field changed.
1400	if { ![info exists _limits($_curFldName)] } {
1401	SendCmd "dataset maprange all"
1402	} else {
1403	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1404	}
1405	SendCmd "streamlines colormode $_colorMode $_curFldName"
1406	SendCmd "cutplane colormode $_colorMode $_curFldName"
1407	DrawLegend
1408	}
1409	"-streamlinesseedsvisible" {
1410	set bool $_settings($what)
1411	SendCmd "streamlines seed visible $bool"
1412	}
1413	"-streamlinesnumseeds" {
1414	set density $_settings($what)
1415	EventuallyReseed $density
1416	}
1417	"-streamlinesvisible" {
1418	set bool $_settings($what)
1419	SendCmd "streamlines visible $bool"
1420	if { $bool } {
1421	Rappture::Tooltip::for $itk_component(streamlines) \
1422	"Hide the streamlines"
1423	} else {
1424	Rappture::Tooltip::for $itk_component(streamlines) \
1425	"Show the streamlines"
1426	}
1427	}
1428	"-streamlinesmode" {
1429	set mode [$itk_component(streammode) value]
1430	set _settings($what) $mode
1431	switch -- $mode {
1432	"lines" {
1433	SendCmd "streamlines lines"
1434	}
1435	"ribbons" {
1436	SendCmd "streamlines ribbons 3 0"
1437	}
1438	"tubes" {
1439	SendCmd "streamlines tubes 5 3"
1440	}
1441	}
1442	}
1443	"-streamlinescolormap" {
1444	set colormap [$itk_component(colormap) value]
1445	set _settings($what) $colormap
1446	foreach dataset [CurrentDatasets -visible $_first] {
1447	foreach {dataobj comp} [split $dataset -] break
1448	ChangeColormap $dataobj $comp $colormap
1449	}
1450	set _legendPending 1
1451	}
1452	"-streamlinesopacity" {
1453	set val $_settings($what)
1454	set sval [expr { 0.01 * double($val) }]
1455	SendCmd "streamlines opacity $sval"
1456	}
1457	"-streamlinesscale" {
1458	set val $_settings($what)
1459	set sval [expr { 0.01 * double($val) }]
1460	SendCmd "streamlines scale $sval $sval $sval"
1461	}
1462	"-streamlineslighting" {
1463	set bool $_settings($what)
1464	SendCmd "streamlines lighting $bool"
1465	}
1466	"-volumeopacity" {
1467	set val $_settings($what)
1468	set sval [expr { 0.01 * double($val) }]
1469	SendCmd "polydata opacity $sval"
1470	}
1471	"-volumewireframe" {
1472	set bool $_settings($what)
1473	SendCmd "polydata wireframe $bool"
1474	}
1475	"-volumevisible" {
1476	set bool $_settings($what)
1477	SendCmd "polydata visible $bool"
1478	if { $bool } {
1479	Rappture::Tooltip::for $itk_component(volume) \
1480	"Hide the volume"
1481	} else {
1482	Rappture::Tooltip::for $itk_component(volume) \
1483	"Show the volume"
1484	}
1485	}
1486	"-volumelighting" {
1487	set bool $_settings($what)
1488	SendCmd "polydata lighting $bool"
1489	}
1490	"-volumeedges" {
1491	set bool $_settings($what)
1492	SendCmd "polydata edges $bool"
1493	}
1494	"-xgrid" - "-ygrid" - "-zgrid" {
1495	set axis [string range $what 1 1]
1496	set bool $_settings($what)
1497	SendCmd "axis grid $axis $bool"
1498	}
1499	default {
1500	error "don't know how to fix $what"
1501	}
1502	}
1503	}
1504
1505	#
1506	# RequestLegend --
1507	#
1508	# Request a new legend from the server. The size of the legend
1509	# is determined from the height of the canvas. It will be rotated
1510	# to be vertical when drawn.
1511	#
1512	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1513	set font "Arial 8"
1514	set lineht [font metrics $font -linespace]
1515	set w 12
1516	set h [expr {$_height - 3 * ($lineht + 2)}]
1517	if { $h < 1 } {
1518	return
1519	}
1520	# Set the legend on the first streamlines dataset.
1521	foreach dataset [CurrentDatasets -visible $_first] {
1522	foreach {dataobj comp} [split $dataset -] break
1523	if { [info exists _dataset2style($dataset)] } {
1524	SendCmdNoWait \
1525	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1526	break;
1527	}
1528	}
1529	}
1530
1531	#
1532	# ChangeColormap --
1533	#
1534	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1535	set tag $dataobj-$comp
1536	if { ![info exist _style($tag)] } {
1537	error "no initial colormap"
1538	}
1539	array set style $_style($tag)
1540	set style(-color) $color
1541	set _style($tag) [array get style]
1542	SetColormap $dataobj $comp
1543	}
1544
1545	#
1546	# SetColormap --
1547	#
1548	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1549	array set style {
1550	-color BCGYR
1551	-levels 6
1552	-opacity 1.0
1553	}
1554	set tag $dataobj-$comp
1555	if { ![info exists _initialStyle($tag)] } {
1556	# Save the initial component style.
1557	set _initialStyle($tag) [$dataobj style $comp]
1558	}
1559
1560	# Override defaults with initial style defined in xml.
1561	array set style $_initialStyle($tag)
1562
1563	if { ![info exists _style($tag)] } {
1564	set _style($tag) [array get style]
1565	}
1566	# Override initial style with current style.
1567	array set style $_style($tag)
1568
1569	set name "$style(-color):$style(-levels):$style(-opacity)"
1570	if { ![info exists _colormaps($name)] } {
1571	BuildColormap $name [array get style]
1572	set _colormaps($name) 1
1573	}
1574	if { ![info exists _dataset2style($tag)] \|\|
1575	$_dataset2style($tag) != $name } {
1576	SendCmd "streamlines colormap $name $tag"
1577	SendCmd "cutplane colormap $name $tag"
1578	set _dataset2style($tag) $name
1579	}
1580	}
1581
1582	#
1583	# BuildColormap --
1584	#
1585	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1586	array set style $styles
1587	set cmap [ColorsToColormap $style(-color)]
1588	if { [llength $cmap] == 0 } {
1589	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1590	}
1591	if { ![info exists _settings(-volumeopacity)] } {
1592	set _settings(-volumeopacity) $style(-opacity)
1593	}
1594	set max $_settings(-volumeopacity)
1595
1596	set wmap "0.0 1.0 1.0 1.0"
1597	SendCmd "colormap add $name { $cmap } { $wmap }"
1598	}
1599
1600	# ----------------------------------------------------------------------
1601	# CONFIGURATION OPTION: -plotbackground
1602	# ----------------------------------------------------------------------
1603	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1604	if { [isconnected] } {
1605	set rgb [Color2RGB $itk_option(-plotbackground)]
1606	SendCmd "screen bgcolor $rgb"
1607	}
1608	}
1609
1610	# ----------------------------------------------------------------------
1611	# CONFIGURATION OPTION: -plotforeground
1612	# ----------------------------------------------------------------------
1613	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1614	if { [isconnected] } {
1615	set rgb [Color2RGB $itk_option(-plotforeground)]
1616	SendCmd "axis color all $rgb"
1617	SendCmd "outline color $rgb"
1618	SendCmd "cutplane color $rgb"
1619	}
1620	}
1621
1622	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1623
1624	set fg [option get $itk_component(hull) font Font]
1625	#set bfg [option get $itk_component(hull) boldFont Font]
1626
1627	set inner [$itk_component(main) insert end \
1628	-title "Volume Settings" \
1629	-icon [Rappture::icon volume-on]]
1630	$inner configure -borderwidth 4
1631
1632	checkbutton $inner.volume \
1633	-text "Show Volume" \
1634	-variable [itcl::scope _settings(-volumevisible)] \
1635	-command [itcl::code $this AdjustSetting -volumevisible] \
1636	-font "Arial 9"
1637
1638	checkbutton $inner.wireframe \
1639	-text "Show Wireframe" \
1640	-variable [itcl::scope _settings(-volumewireframe)] \
1641	-command [itcl::code $this AdjustSetting -volumewireframe] \
1642	-font "Arial 9"
1643
1644	checkbutton $inner.lighting \
1645	-text "Enable Lighting" \
1646	-variable [itcl::scope _settings(-volumelighting)] \
1647	-command [itcl::code $this AdjustSetting -volumelighting] \
1648	-font "Arial 9"
1649
1650	checkbutton $inner.edges \
1651	-text "Show Edges" \
1652	-variable [itcl::scope _settings(-volumeedges)] \
1653	-command [itcl::code $this AdjustSetting -volumeedges] \
1654	-font "Arial 9"
1655
1656	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1657	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1658	-variable [itcl::scope _settings(-volumeopacity)] \
1659	-width 10 \
1660	-showvalue off \
1661	-command [itcl::code $this AdjustSetting -volumeopacity]
1662
1663	blt::table $inner \
1664	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1665	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1666	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1667	3,0 $inner.opacity_l -anchor w -pady 2 \
1668	3,1 $inner.opacity -fill x -pady 2
1669
1670	blt::table configure $inner r* c* -resize none
1671	blt::table configure $inner r4 c1 -resize expand
1672	}
1673
1674	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1675
1676	set fg [option get $itk_component(hull) font Font]
1677	#set bfg [option get $itk_component(hull) boldFont Font]
1678
1679	set inner [$itk_component(main) insert end \
1680	-title "Streams Settings" \
1681	-icon [Rappture::icon streamlines-on]]
1682	$inner configure -borderwidth 4
1683
1684	checkbutton $inner.streamlines \
1685	-text "Show Streamlines" \
1686	-variable [itcl::scope _settings(-streamlinesvisible)] \
1687	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
1688	-font "Arial 9"
1689
1690	checkbutton $inner.lighting \
1691	-text "Enable Lighting" \
1692	-variable [itcl::scope _settings(-streamlineslighting)] \
1693	-command [itcl::code $this AdjustSetting -streamlineslighting] \
1694	-font "Arial 9"
1695
1696	checkbutton $inner.seeds \
1697	-text "Show Seeds" \
1698	-variable [itcl::scope _settings(-streamlinesseedsvisible)] \
1699	-command [itcl::code $this AdjustSetting -streamlinesseedsvisible] \
1700	-font "Arial 9"
1701
1702	label $inner.mode_l -text "Mode" -font "Arial 9"
1703	itk_component add streammode {
1704	Rappture::Combobox $inner.mode -width 10 -editable no
1705	}
1706	$inner.mode choices insert end \
1707	"lines" "lines" \
1708	"ribbons" "ribbons" \
1709	"tubes" "tubes"
1710	$itk_component(streammode) value $_settings(-streamlinesmode)
1711	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -streamlinesmode]
1712
1713	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1714	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1715	-variable [itcl::scope _settings(-streamlinesopacity)] \
1716	-width 10 \
1717	-showvalue off \
1718	-command [itcl::code $this AdjustSetting -streamlinesopacity]
1719
1720	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1721	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1722	-variable [itcl::scope _settings(-streamlinesnumseeds)] \
1723	-width 10 \
1724	-showvalue on \
1725	-command [itcl::code $this AdjustSetting -streamlinesnumseeds]
1726
1727	label $inner.scale_l -text "Scale" -font "Arial 9"
1728	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1729	-variable [itcl::scope _settings(-streamlinesscale)] \
1730	-width 10 \
1731	-showvalue off \
1732	-command [itcl::code $this AdjustSetting -streamlinesscale]
1733
1734	label $inner.field_l -text "Color by" -font "Arial 9"
1735	itk_component add field {
1736	Rappture::Combobox $inner.field -width 10 -editable no
1737	}
1738	bind $inner.field <<Value>> \
1739	[itcl::code $this AdjustSetting -field]
1740
1741	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1742	itk_component add colormap {
1743	Rappture::Combobox $inner.colormap -width 10 -editable no
1744	}
1745	$inner.colormap choices insert end [GetColormapList]
1746
1747	$itk_component(colormap) value "BCGYR"
1748	bind $inner.colormap <<Value>> \
1749	[itcl::code $this AdjustSetting -streamlinescolormap]
1750
1751	blt::table $inner \
1752	0,0 $inner.field_l -anchor w -pady 2 \
1753	0,1 $inner.field -fill x -pady 2 \
1754	1,0 $inner.colormap_l -anchor w -pady 2 \
1755	1,1 $inner.colormap -fill x -pady 2 \
1756	2,0 $inner.mode_l -anchor w -pady 2 \
1757	2,1 $inner.mode -fill x -pady 2 \
1758	3,0 $inner.opacity_l -anchor w -pady 2 \
1759	3,1 $inner.opacity -fill x -pady 2 \
1760	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1761	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1762	7,0 $inner.density_l -anchor w -pady 2 \
1763	7,1 $inner.density -fill x -pady 2 \
1764
1765	blt::table configure $inner r* c* -resize none
1766	blt::table configure $inner r10 c1 c2 -resize expand
1767	}
1768
1769	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1770
1771	set fg [option get $itk_component(hull) font Font]
1772	#set bfg [option get $itk_component(hull) boldFont Font]
1773
1774	set inner [$itk_component(main) insert end \
1775	-title "Axis Settings" \
1776	-icon [Rappture::icon axis2]]
1777	$inner configure -borderwidth 4
1778
1779	checkbutton $inner.visible \
1780	-text "Axes" \
1781	-variable [itcl::scope _settings(-axesvisible)] \
1782	-command [itcl::code $this AdjustSetting -axesvisible] \
1783	-font "Arial 9"
1784
1785	checkbutton $inner.labels \
1786	-text "Axis Labels" \
1787	-variable [itcl::scope _settings(-axislabelsvisible)] \
1788	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1789	-font "Arial 9"
1790	label $inner.grid_l -text "Grid" -font "Arial 9"
1791	checkbutton $inner.xgrid \
1792	-text "X" \
1793	-variable [itcl::scope _settings(-xgrid)] \
1794	-command [itcl::code $this AdjustSetting -xgrid] \
1795	-font "Arial 9"
1796	checkbutton $inner.ygrid \
1797	-text "Y" \
1798	-variable [itcl::scope _settings(-ygrid)] \
1799	-command [itcl::code $this AdjustSetting -ygrid] \
1800	-font "Arial 9"
1801	checkbutton $inner.zgrid \
1802	-text "Z" \
1803	-variable [itcl::scope _settings(-zgrid)] \
1804	-command [itcl::code $this AdjustSetting -zgrid] \
1805	-font "Arial 9"
1806	checkbutton $inner.minorticks \
1807	-text "Minor Ticks" \
1808	-variable [itcl::scope _settings(-axisminorticks)] \
1809	-command [itcl::code $this AdjustSetting -axisminorticks] \
1810	-font "Arial 9"
1811
1812	label $inner.mode_l -text "Mode" -font "Arial 9"
1813
1814	itk_component add axismode {
1815	Rappture::Combobox $inner.mode -width 10 -editable no
1816	}
1817	$inner.mode choices insert end \
1818	"static_triad" "static" \
1819	"closest_triad" "closest" \
1820	"furthest_triad" "farthest" \
1821	"outer_edges" "outer"
1822	$itk_component(axismode) value $_settings(-axismode)
1823	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1824
1825	blt::table $inner \
1826	0,0 $inner.visible -anchor w -cspan 4 \
1827	1,0 $inner.labels -anchor w -cspan 4 \
1828	2,0 $inner.minorticks -anchor w -cspan 4 \
1829	4,0 $inner.grid_l -anchor w \
1830	4,1 $inner.xgrid -anchor w \
1831	4,2 $inner.ygrid -anchor w \
1832	4,3 $inner.zgrid -anchor w \
1833	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1834	5,1 $inner.mode -fill x -cspan 3
1835
1836	blt::table configure $inner r* c* -resize none
1837	blt::table configure $inner r7 c6 -resize expand
1838	blt::table configure $inner r3 -height 0.125i
1839	}
1840
1841	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1842	set inner [$itk_component(main) insert end \
1843	-title "Camera Settings" \
1844	-icon [Rappture::icon camera]]
1845	$inner configure -borderwidth 4
1846
1847	label $inner.view_l -text "view" -font "Arial 9"
1848	set f [frame $inner.view]
1849	foreach side { front back left right top bottom } {
1850	button $f.$side -image [Rappture::icon view$side] \
1851	-command [itcl::code $this SetOrientation $side]
1852	Rappture::Tooltip::for $f.$side "Change the view to $side"
1853	pack $f.$side -side left
1854	}
1855
1856	blt::table $inner \
1857	0,0 $inner.view_l -anchor e -pady 2 \
1858	0,1 $inner.view -anchor w -pady 2
1859	blt::table configure $inner r0 -resize none
1860
1861	set labels { qx qy qz qw xpan ypan zoom }
1862	set row 1
1863	foreach tag $labels {
1864	label $inner.${tag}label -text $tag -font "Arial 9"
1865	entry $inner.${tag} -font "Arial 9" -bg white \
1866	-textvariable [itcl::scope _view(-$tag)]
1867	bind $inner.${tag} <Return> \
1868	[itcl::code $this camera set -${tag}]
1869	bind $inner.${tag} <KP_Enter> \
1870	[itcl::code $this camera set -${tag}]
1871	blt::table $inner \
1872	$row,0 $inner.${tag}label -anchor e -pady 2 \
1873	$row,1 $inner.${tag} -anchor w -pady 2
1874	blt::table configure $inner r$row -resize none
1875	incr row
1876	}
1877	checkbutton $inner.ortho \
1878	-text "Orthographic Projection" \
1879	-variable [itcl::scope _view(-ortho)] \
1880	-command [itcl::code $this camera set -ortho] \
1881	-font "Arial 9"
1882	blt::table $inner \
1883	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1884	blt::table configure $inner r$row -resize none
1885	incr row
1886
1887	blt::table configure $inner c* -resize none
1888	blt::table configure $inner c2 -resize expand
1889	blt::table configure $inner r$row -resize expand
1890	}
1891
1892	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1893
1894	set fg [option get $itk_component(hull) font Font]
1895
1896	set inner [$itk_component(main) insert end \
1897	-title "Cutplane Settings" \
1898	-icon [Rappture::icon cutbutton]]
1899
1900	$inner configure -borderwidth 4
1901
1902	checkbutton $inner.visible \
1903	-text "Show Cutplanes" \
1904	-variable [itcl::scope _settings(-cutplanevisible)] \
1905	-command [itcl::code $this AdjustSetting -cutplanevisible] \
1906	-font "Arial 9"
1907
1908	checkbutton $inner.wireframe \
1909	-text "Show Wireframe" \
1910	-variable [itcl::scope _settings(-cutplanewireframe)] \
1911	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1912	-font "Arial 9"
1913
1914	checkbutton $inner.lighting \
1915	-text "Enable Lighting" \
1916	-variable [itcl::scope _settings(-cutplanelighting)] \
1917	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1918	-font "Arial 9"
1919
1920	checkbutton $inner.edges \
1921	-text "Show Edges" \
1922	-variable [itcl::scope _settings(-cutplaneedges)] \
1923	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1924	-font "Arial 9"
1925
1926	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1927	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1928	-variable [itcl::scope _settings(-cutplaneopacity)] \
1929	-width 10 \
1930	-showvalue off \
1931	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1932	$inner.opacity set $_settings(-cutplaneopacity)
1933
1934	# X-value slicer...
1935	itk_component add xCutButton {
1936	Rappture::PushButton $inner.xbutton \
1937	-onimage [Rappture::icon x-cutplane-red] \
1938	-offimage [Rappture::icon x-cutplane-red] \
1939	-command [itcl::code $this AdjustSetting -cutplanexvisible] \
1940	-variable [itcl::scope _settings(-cutplanexvisible)]
1941	}
1942	Rappture::Tooltip::for $itk_component(xCutButton) \
1943	"Toggle the X-axis cutplane on/off"
1944	$itk_component(xCutButton) select
1945
1946	itk_component add xCutScale {
1947	::scale $inner.xval -from 100 -to 0 \
1948	-width 10 -orient vertical -showvalue yes \
1949	-borderwidth 1 -highlightthickness 0 \
1950	-command [itcl::code $this EventuallySetCutplane x] \
1951	-variable [itcl::scope _settings(-cutplanexposition)] \
1952	-foreground red3 -font "Arial 9 bold"
1953	} {
1954	usual
1955	ignore -borderwidth -highlightthickness -foreground -font
1956	}
1957	# Set the default cutplane value before disabling the scale.
1958	$itk_component(xCutScale) set 50
1959	$itk_component(xCutScale) configure -state disabled
1960	Rappture::Tooltip::for $itk_component(xCutScale) \
1961	"@[itcl::code $this Slice tooltip x]"
1962
1963	# Y-value slicer...
1964	itk_component add yCutButton {
1965	Rappture::PushButton $inner.ybutton \
1966	-onimage [Rappture::icon y-cutplane-green] \
1967	-offimage [Rappture::icon y-cutplane-green] \
1968	-command [itcl::code $this AdjustSetting -cutplaneyvisible] \
1969	-variable [itcl::scope _settings(-cutplaneyvisible)]
1970	}
1971	Rappture::Tooltip::for $itk_component(yCutButton) \
1972	"Toggle the Y-axis cutplane on/off"
1973	$itk_component(yCutButton) select
1974
1975	itk_component add yCutScale {
1976	::scale $inner.yval -from 100 -to 0 \
1977	-width 10 -orient vertical -showvalue yes \
1978	-borderwidth 1 -highlightthickness 0 \
1979	-command [itcl::code $this EventuallySetCutplane y] \
1980	-variable [itcl::scope _settings(-cutplaneyposition)] \
1981	-foreground green3 -font "Arial 9 bold"
1982	} {
1983	usual
1984	ignore -borderwidth -highlightthickness -foreground -font
1985	}
1986	Rappture::Tooltip::for $itk_component(yCutScale) \
1987	"@[itcl::code $this Slice tooltip y]"
1988	# Set the default cutplane value before disabling the scale.
1989	$itk_component(yCutScale) set 50
1990	$itk_component(yCutScale) configure -state disabled
1991
1992	# Z-value slicer...
1993	itk_component add zCutButton {
1994	Rappture::PushButton $inner.zbutton \
1995	-onimage [Rappture::icon z-cutplane-blue] \
1996	-offimage [Rappture::icon z-cutplane-blue] \
1997	-command [itcl::code $this AdjustSetting -cutplanezvisible] \
1998	-variable [itcl::scope _settings(-cutplanezvisible)]
1999	}
2000	Rappture::Tooltip::for $itk_component(zCutButton) \
2001	"Toggle the Z-axis cutplane on/off"
2002	$itk_component(zCutButton) select
2003
2004	itk_component add zCutScale {
2005	::scale $inner.zval -from 100 -to 0 \
2006	-width 10 -orient vertical -showvalue yes \
2007	-borderwidth 1 -highlightthickness 0 \
2008	-command [itcl::code $this EventuallySetCutplane z] \
2009	-variable [itcl::scope _settings(-cutplanezposition)] \
2010	-foreground blue3 -font "Arial 9 bold"
2011	} {
2012	usual
2013	ignore -borderwidth -highlightthickness -foreground -font
2014	}
2015	$itk_component(zCutScale) set 50
2016	$itk_component(zCutScale) configure -state disabled
2017	Rappture::Tooltip::for $itk_component(zCutScale) \
2018	"@[itcl::code $this Slice tooltip z]"
2019
2020	blt::table $inner \
2021	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2022	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2023	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2024	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2025	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2026	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2027	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2028	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2029	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2030	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2031	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2032
2033	blt::table configure $inner r* c* -resize none
2034	blt::table configure $inner r7 c4 -resize expand
2035	}
2036
2037	#
2038	# camera --
2039	#
2040	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2041	switch -- $option {
2042	"show" {
2043	puts [array get _view]
2044	}
2045	"set" {
2046	set what [lindex $args 0]
2047	set x $_view($what)
2048	set code [catch { string is double $x } result]
2049	if { $code != 0 \|\| !$result } {
2050	return
2051	}
2052	switch -- $what {
2053	"-ortho" {
2054	if {$_view($what)} {
2055	SendCmd "camera mode ortho"
2056	} else {
2057	SendCmd "camera mode persp"
2058	}
2059	}
2060	"-xpan" - "-ypan" {
2061	PanCamera
2062	}
2063	"-qx" - "-qy" - "-qz" - "-qw" {
2064	set q [ViewToQuaternion]
2065	$_arcball quaternion $q
2066	EventuallyRotate $q
2067	}
2068	"-zoom" {
2069	SendCmd "camera zoom $_view($what)"
2070	}
2071	}
2072	}
2073	}
2074	}
2075
2076	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2077	set bytes ""
2078	foreach dataobj [get] {
2079	foreach comp [$dataobj components] {
2080	set tag $dataobj-$comp
2081	set contents [$dataobj vtkdata $comp]
2082	append bytes "$contents\n"
2083	}
2084	}
2085	return [list .vtk $bytes]
2086	}
2087
2088	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2089	if { [image width $_image(download)] > 0 &&
2090	[image height $_image(download)] > 0 } {
2091	set bytes [$_image(download) data -format "jpeg -quality 100"]
2092	set bytes [Rappture::encoding::decode -as b64 $bytes]
2093	return [list .jpg $bytes]
2094	}
2095	return ""
2096	}
2097
2098	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2099	Rappture::Balloon $popup \
2100	-title "[Rappture::filexfer::label downloadWord] as..."
2101	set inner [$popup component inner]
2102	label $inner.summary -text "" -anchor w
2103	radiobutton $inner.vtk_button -text "VTK data file" \
2104	-variable [itcl::scope _downloadPopup(format)] \
2105	-font "Helvetica 9 " \
2106	-value vtk
2107	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2108	radiobutton $inner.image_button -text "Image File" \
2109	-variable [itcl::scope _downloadPopup(format)] \
2110	-value image
2111	Rappture::Tooltip::for $inner.image_button \
2112	"Save as digital image."
2113
2114	button $inner.ok -text "Save" \
2115	-highlightthickness 0 -pady 2 -padx 3 \
2116	-command $command \
2117	-compound left \
2118	-image [Rappture::icon download]
2119
2120	button $inner.cancel -text "Cancel" \
2121	-highlightthickness 0 -pady 2 -padx 3 \
2122	-command [list $popup deactivate] \
2123	-compound left \
2124	-image [Rappture::icon cancel]
2125
2126	blt::table $inner \
2127	0,0 $inner.summary -cspan 2 \
2128	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2129	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2130	4,1 $inner.cancel -width .9i -fill y \
2131	4,0 $inner.ok -padx 2 -width .9i -fill y
2132	blt::table configure $inner r3 -height 4
2133	blt::table configure $inner r4 -pady 4
2134	raise $inner.image_button
2135	$inner.vtk_button invoke
2136	return $inner
2137	}
2138
2139	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2140	# Parse style string.
2141	set tag $dataobj-$comp
2142	set style [$dataobj style $comp]
2143	array set settings {
2144	-color \#808080
2145	-edges 0
2146	-edgecolor black
2147	-linewidth 1.0
2148	-opacity 0.4
2149	-wireframe 0
2150	-lighting 1
2151	-seeds 1
2152	-seedcolor white
2153	-visible 1
2154	}
2155	if { $dataobj != $_first } {
2156	set settings(-opacity) 1
2157	}
2158	array set settings $style
2159	StartBufferingCommands
2160	SendCmd "streamlines add $tag"
2161	SendCmd "streamlines seed visible off $tag"
2162	set seeds [$dataobj hints seeds]
2163	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2164	set length [string length $seeds]
2165	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2166	append _outbuf $seeds
2167	set _seeds($dataobj) 1
2168	}
2169	SendCmd "cutplane add $tag"
2170	SendCmd "polydata add $tag"
2171	SendCmd "polydata colormode constant {} $tag"
2172	set _settings(-volumeedges) $settings(-edges)
2173	set _settings(-volumelighting) $settings(-lighting)
2174	set _settings(-volumeopacity) $settings(-opacity)
2175	set _settings(-volumewireframe) $settings(-wireframe)
2176	set _settings(-volumeopacity) [expr $settings(-opacity) * 100.0]
2177	StopBufferingCommands
2178	SetColormap $dataobj $comp
2179	}
2180
2181	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2182	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2183	return 0
2184	}
2185	return 1
2186	}
2187
2188	# ----------------------------------------------------------------------
2189	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2190	#
2191	# Invoked automatically whenever the "legend" command comes in from
2192	# the rendering server. Indicates that binary image data with the
2193	# specified <size> will follow.
2194	# ----------------------------------------------------------------------
2195	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2196	set _legendPending 0
2197	set _title $title
2198	regsub {\(mag\)} $title "" _title
2199	if { [IsConnected] } {
2200	set bytes [ReceiveBytes $size]
2201	if { ![info exists _image(legend)] } {
2202	set _image(legend) [image create photo]
2203	}
2204	$_image(legend) configure -data $bytes
2205	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2206	if { [catch {DrawLegend} errs] != 0 } {
2207	puts stderr errs=$errs
2208	}
2209	}
2210	}
2211
2212	#
2213	# DrawLegend --
2214	#
2215	# Draws the legend in it's own canvas which resides to the right
2216	# of the contour plot area.
2217	#
2218	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2219	set fname $_curFldName
2220	set c $itk_component(view)
2221	set w [winfo width $c]
2222	set h [winfo height $c]
2223	set font "Arial 8"
2224	set lineht [font metrics $font -linespace]
2225
2226	if { [info exists _fields($fname)] } {
2227	foreach { title units } $_fields($fname) break
2228	if { $units != "" } {
2229	set title [format "%s (%s)" $title $units]
2230	}
2231	} else {
2232	set title $fname
2233	}
2234	if { $_settings(-legendvisible) } {
2235	set x [expr $w - 2]
2236	if { [$c find withtag "legend"] == "" } {
2237	set y 2
2238	$c create text $x $y \
2239	-anchor ne \
2240	-fill $itk_option(-plotforeground) -tags "title legend" \
2241	-font $font
2242	incr y $lineht
2243	$c create text $x $y \
2244	-anchor ne \
2245	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2246	-font $font
2247	incr y $lineht
2248	$c create image $x $y \
2249	-anchor ne \
2250	-image $_image(legend) -tags "colormap legend"
2251	$c create text $x [expr {$h-2}] \
2252	-anchor se \
2253	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2254	-font $font
2255	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2256	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2257	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2258	}
2259	$c bind title <ButtonPress> [itcl::code $this Combo post]
2260	$c bind title <Enter> [itcl::code $this Combo activate]
2261	$c bind title <Leave> [itcl::code $this Combo deactivate]
2262	# Reset the item coordinates according the current size of the plot.
2263	$c itemconfigure title -text $title
2264	if { [info exists _limits($_curFldName)] } {
2265	foreach {vmin vmax} $_limits($_curFldName) break
2266	$c itemconfigure vmin -text [format %g $vmin]
2267	$c itemconfigure vmax -text [format %g $vmax]
2268	}
2269	set y 2
2270	$c coords title $x $y
2271	incr y $lineht
2272	$c coords vmax $x $y
2273	incr y $lineht
2274	$c coords colormap $x $y
2275	$c coords vmin $x [expr {$h - 2}]
2276	}
2277	}
2278
2279	#
2280	# EnterLegend --
2281	#
2282	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2283	SetLegendTip $x $y
2284	}
2285
2286	#
2287	# MotionLegend --
2288	#
2289	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2290	Rappture::Tooltip::tooltip cancel
2291	set c $itk_component(view)
2292	SetLegendTip $x $y
2293	}
2294
2295	#
2296	# LeaveLegend --
2297	#
2298	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2299	Rappture::Tooltip::tooltip cancel
2300	.rappturetooltip configure -icon ""
2301	}
2302
2303	#
2304	# SetLegendTip --
2305	#
2306	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2307	set c $itk_component(view)
2308	set w [winfo width $c]
2309	set h [winfo height $c]
2310	set font "Arial 8"
2311	set lineht [font metrics $font -linespace]
2312
2313	set imgHeight [image height $_image(legend)]
2314	set coords [$c coords colormap]
2315	set imgX [expr $w - [image width $_image(legend)] - 2]
2316	set imgY [expr $y - 2 * ($lineht + 2)]
2317
2318	if { [info exists _fields($_title)] } {
2319	foreach { title units } $_fields($_title) break
2320	if { $units != "" } {
2321	set title [format "%s (%s)" $title $units]
2322	}
2323	} else {
2324	set title $_title
2325	}
2326	# Make a swatch of the selected color
2327	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2328	#puts stderr "out of range: $imgY"
2329	return
2330	}
2331	if { ![info exists _image(swatch)] } {
2332	set _image(swatch) [image create photo -width 24 -height 24]
2333	}
2334	set color [eval format "\#%02x%02x%02x" $pixel]
2335	$_image(swatch) put black -to 0 0 23 23
2336	$_image(swatch) put $color -to 1 1 22 22
2337	.rappturetooltip configure -icon $_image(swatch)
2338
2339	# Compute the value of the point
2340	if { [info exists _limits($_curFldName)] } {
2341	foreach {vmin vmax} $_limits($_curFldName) break
2342	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2343	set value [expr $t * ($vmax - $vmin) + $vmin]
2344	} else {
2345	set value 0.0
2346	}
2347	set tipx [expr $x + 15]
2348	set tipy [expr $y - 5]
2349	Rappture::Tooltip::text $c "$title $value"
2350	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2351	}
2352
2353	# ----------------------------------------------------------------------
2354	# USAGE: Slice move x\|y\|z <newval>
2355	#
2356	# Called automatically when the user drags the slider to move the
2357	# cut plane that slices 3D data. Gets the current value from the
2358	# slider and moves the cut plane to the appropriate point in the
2359	# data set.
2360	# ----------------------------------------------------------------------
2361	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2362	switch -- $option {
2363	"move" {
2364	set axis [lindex $args 0]
2365	set newval [lindex $args 1]
2366	if {[llength $args] != 2} {
2367	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2368	}
2369	set newpos [expr {0.01*$newval}]
2370	SendCmd "cutplane slice $axis $newpos"
2371	}
2372	"tooltip" {
2373	set axis [lindex $args 0]
2374	set val [$itk_component(${axis}CutScale) get]
2375	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2376	}
2377	default {
2378	error "bad option \"$option\": should be axis, move, or tooltip"
2379	}
2380	}
2381	}
2382
2383	# ----------------------------------------------------------------------
2384	# USAGE: _dropdown post
2385	# USAGE: _dropdown unpost
2386	# USAGE: _dropdown select
2387	#
2388	# Used internally to handle the dropdown list for this combobox. The
2389	# post/unpost options are invoked when the list is posted or unposted
2390	# to manage the relief of the controlling button. The select option
2391	# is invoked whenever there is a selection from the list, to assign
2392	# the value back to the gauge.
2393	# ----------------------------------------------------------------------
2394	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2395	set c $itk_component(view)
2396	switch -- $option {
2397	post {
2398	foreach { x1 y1 x2 y2 } [$c bbox title] break
2399	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2400	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2401	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2402	tk_popup $itk_component(fieldmenu) $x $y
2403	}
2404	activate {
2405	$c itemconfigure title -fill red
2406	}
2407	deactivate {
2408	$c itemconfigure title -fill white
2409	}
2410	invoke {
2411	$itk_component(field) value $_curFldLabel
2412	AdjustSetting -field
2413	}
2414	default {
2415	error "bad option \"$option\": should be post, unpost, select"
2416	}
2417	}
2418	}
2419
2420	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2421	array set positions {
2422	front "1 0 0 0"
2423	back "0 0 1 0"
2424	left "0.707107 0 -0.707107 0"
2425	right "0.707107 0 0.707107 0"
2426	top "0.707107 -0.707107 0 0"
2427	bottom "0.707107 0.707107 0 0"
2428	}
2429	foreach name { -qw -qx -qy -qz } value $positions($side) {
2430	set _view($name) $value
2431	}
2432	set q [ViewToQuaternion]
2433	$_arcball quaternion $q
2434	SendCmd "camera orient $q"
2435	SendCmd "camera reset"
2436	set _view(-xpan) 0
2437	set _view(-ypan) 0
2438	set _view(-zoom) 1.0
2439	}

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