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source: tags/1.3.5/gui/scripts/vtkstreamlinesviewer.tcl @ 4753

Last change on this file since 4753 was 4753, checked in by ldelgass, 10 years ago
merge r4749 from trunk
File size: 83.4 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkviewer - Vtk drawing 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) 2004-2012 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	protected method Connect {}
65	protected method CurrentDatasets {args}
66	protected method Disconnect {}
67	protected method DoResize {}
68	protected method DoReseed {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method ReceiveLegend { colormap title vmin vmax size }
78	protected method Rotate {option x y}
79	protected method Zoom {option}
80
81	# The following methods are only used by this class.
82	private method BuildAxisTab {}
83	private method BuildCameraTab {}
84	private method BuildColormap { name colors }
85	private method BuildCutplaneTab {}
86	private method BuildDownloadPopup { widget command }
87	private method BuildStreamsTab {}
88	private method BuildVolumeTab {}
89	private method DrawLegend {}
90	private method Combo { option }
91	private method EnterLegend { x y }
92	private method EventuallyResize { w h }
93	private method EventuallyReseed { numPoints }
94	private method EventuallyRotate { q }
95	private method EventuallySetCutplane { axis args }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetColormap { dataobj comp }
104	private method ChangeColormap { dataobj comp color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method Slice {option args}
108	private method SetOrientation { side }
109
110	private variable _arcball ""
111
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119	private variable _dataset2style ;# maps dataobj-component to transfunc
120
121	private variable _click ; # info used for rotate operations
122	private variable _limits ; # autoscale min/max for all axes
123	private variable _view ; # view params for 3D view
124	private variable _settings
125	private variable _style; # Array of current component styles.
126	private variable _initialStyle; # Array of initial component styles.
127	private variable _reset 1; # indicates if camera needs to be reset
128	# to starting position.
129
130	private variable _first "" ; # This is the topmost dataset.
131	private variable _start 0
132	private variable _title ""
133	private variable _seeds
134
135	common _downloadPopup; # download options from popup
136	private common _hardcopy
137	private variable _width 0
138	private variable _height 0
139	private variable _resizePending 0
140	private variable _reseedPending 0
141	private variable _rotatePending 0
142	private variable _cutplanePending 0
143	private variable _legendPending 0
144	private variable _vectorFields
145	private variable _scalarFields
146	private variable _fields
147	private variable _curFldName ""
148	private variable _curFldLabel ""
149	private variable _field ""
150	private variable _numSeeds 200
151	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
152	}
153
154	itk::usual VtkStreamlinesViewer {
155	keep -background -foreground -cursor -font
156	keep -plotbackground -plotforeground
157	}
158
159	# ----------------------------------------------------------------------
160	# CONSTRUCTOR
161	# ----------------------------------------------------------------------
162	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
163	package require vtk
164	set _serverType "vtkvis"
165
166	EnableWaitDialog 2000
167
168	# Rebuild event
169	$_dispatcher register !rebuild
170	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
171
172	# Resize event
173	$_dispatcher register !resize
174	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
175
176	# Reseed event
177	$_dispatcher register !reseed
178	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
179
180	# Rotate event
181	$_dispatcher register !rotate
182	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
183
184	# Legend event
185	$_dispatcher register !legend
186	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
187
188	# X-Cutplane event
189	$_dispatcher register !xcutplane
190	$_dispatcher dispatch $this !xcutplane \
191	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
192
193	# Y-Cutplane event
194	$_dispatcher register !ycutplane
195	$_dispatcher dispatch $this !ycutplane \
196	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
197
198	# Z-Cutplane event
199	$_dispatcher register !zcutplane
200	$_dispatcher dispatch $this !zcutplane \
201	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
202
203	#
204	# Populate parser with commands handle incoming requests
205	#
206	$_parser alias image [itcl::code $this ReceiveImage]
207	$_parser alias dataset [itcl::code $this ReceiveDataset]
208	$_parser alias legend [itcl::code $this ReceiveLegend]
209
210	# Initialize the view to some default parameters.
211	array set _view {
212	qw 0.853553
213	qx -0.353553
214	qy 0.353553
215	qz 0.146447
216	zoom 1.0
217	xpan 0
218	ypan 0
219	ortho 0
220	}
221	set _arcball [blt::arcball create 100 100]
222	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
223	$_arcball quaternion $q
224
225	array set _settings [subst {
226	axesVisible 1
227	axisLabelsVisible 1
228	axisXGrid 0
229	axisYGrid 0
230	axisZGrid 0
231	cutplaneEdges 0
232	cutplaneLighting 1
233	cutplaneOpacity 100
234	cutplaneVisible 0
235	cutplaneWireframe 0
236	cutplaneXPosition 50
237	cutplaneXVisible 1
238	cutplaneYPosition 50
239	cutplaneYVisible 1
240	cutplaneZPosition 50
241	cutplaneZVisible 1
242	legendVisible 1
243	streamlinesLighting 1
244	streamlinesMode lines
245	streamlinesNumSeeds 200
246	streamlinesOpacity 100
247	streamlinesScale 1
248	streamlinesSeedsVisible 0
249	streamlinesVisible 1
250	volumeEdges 0
251	volumeLighting 1
252	volumeOpacity 40
253	volumeVisible 1
254	volumeWireframe 0
255	}]
256
257	itk_component add view {
258	canvas $itk_component(plotarea).view \
259	-highlightthickness 0 -borderwidth 0
260	} {
261	usual
262	ignore -highlightthickness -borderwidth -background
263	}
264
265	itk_component add fieldmenu {
266	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
267	-tearoff no
268	} {
269	usual
270	ignore -background -foreground -relief -tearoff
271	}
272	set c $itk_component(view)
273	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
274	bind $c <4> [itcl::code $this Zoom in 0.25]
275	bind $c <5> [itcl::code $this Zoom out 0.25]
276	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
277	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
278	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
279	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
280	bind $c <Enter> "focus %W"
281	bind $c <Control-F1> [itcl::code $this ToggleConsole]
282
283	# Fix the scrollregion in case we go off screen
284	$c configure -scrollregion [$c bbox all]
285
286	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
287	set _map(cwidth) -1
288	set _map(cheight) -1
289	set _map(zoom) 1.0
290	set _map(original) ""
291
292	set f [$itk_component(main) component controls]
293	itk_component add reset {
294	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon reset-view] \
297	-command [itcl::code $this Zoom reset]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(reset) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
304
305	itk_component add zoomin {
306	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-in] \
309	-command [itcl::code $this Zoom in]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomin) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
316
317	itk_component add zoomout {
318	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
319	-highlightthickness 0 \
320	-image [Rappture::icon zoom-out] \
321	-command [itcl::code $this Zoom out]
322	} {
323	usual
324	ignore -highlightthickness
325	}
326	pack $itk_component(zoomout) -side top -padx 2 -pady 2
327	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
328
329	itk_component add volume {
330	Rappture::PushButton $f.volume \
331	-onimage [Rappture::icon volume-on] \
332	-offimage [Rappture::icon volume-off] \
333	-variable [itcl::scope _settings(volumeVisible)] \
334	-command [itcl::code $this AdjustSetting volumeVisible]
335	}
336	$itk_component(volume) select
337	Rappture::Tooltip::for $itk_component(volume) \
338	"Don't display the volume"
339	pack $itk_component(volume) -padx 2 -pady 2
340
341	itk_component add streamlines {
342	Rappture::PushButton $f.streamlines \
343	-onimage [Rappture::icon streamlines-on] \
344	-offimage [Rappture::icon streamlines-off] \
345	-variable [itcl::scope _settings(streamlinesVisible)] \
346	-command [itcl::code $this AdjustSetting streamlinesVisible] \
347	}
348	$itk_component(streamlines) select
349	Rappture::Tooltip::for $itk_component(streamlines) \
350	"Toggle the streamlines on/off"
351	pack $itk_component(streamlines) -padx 2 -pady 2
352
353	itk_component add cutplane {
354	Rappture::PushButton $f.cutplane \
355	-onimage [Rappture::icon cutbutton] \
356	-offimage [Rappture::icon cutbutton] \
357	-variable [itcl::scope _settings(cutplaneVisible)] \
358	-command [itcl::code $this AdjustSetting cutplaneVisible]
359	}
360	Rappture::Tooltip::for $itk_component(cutplane) \
361	"Show/Hide cutplanes"
362	pack $itk_component(cutplane) -padx 2 -pady 2
363
364
365	if { [catch {
366	BuildVolumeTab
367	BuildStreamsTab
368	BuildCutplaneTab
369	BuildAxisTab
370	BuildCameraTab
371	} errs] != 0 } {
372	puts stderr errs=$errs
373	}
374	# Legend
375
376	set _image(legend) [image create photo]
377	itk_component add legend {
378	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
379	} {
380	usual
381	ignore -highlightthickness
382	rename -background -plotbackground plotBackground Background
383	}
384
385	# Hack around the Tk panewindow. The problem is that the requested
386	# size of the 3d view isn't set until an image is retrieved from
387	# the server. So the panewindow uses the tiny size.
388	set w 10000
389	pack forget $itk_component(view)
390	blt::table $itk_component(plotarea) \
391	0,0 $itk_component(view) -fill both -reqwidth $w
392	blt::table configure $itk_component(plotarea) c1 -resize none
393
394	# Bindings for rotation via mouse
395	bind $itk_component(view) <ButtonPress-1> \
396	[itcl::code $this Rotate click %x %y]
397	bind $itk_component(view) <B1-Motion> \
398	[itcl::code $this Rotate drag %x %y]
399	bind $itk_component(view) <ButtonRelease-1> \
400	[itcl::code $this Rotate release %x %y]
401	bind $itk_component(view) <Configure> \
402	[itcl::code $this EventuallyResize %w %h]
403
404	if 0 {
405	bind $itk_component(view) <Configure> \
406	[itcl::code $this EventuallyResize %w %h]
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	update
456	}
457
458	# ----------------------------------------------------------------------
459	# DESTRUCTOR
460	# ----------------------------------------------------------------------
461	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
462	Disconnect
463	image delete $_image(plot)
464	image delete $_image(download)
465	catch { blt::arcball destroy $_arcball }
466	}
467
468	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
469	if { $_width < 2 } {
470	set _width 500
471	}
472	if { $_height < 2 } {
473	set _height 500
474	}
475	set _start [clock clicks -milliseconds]
476	SendCmd "screen size $_width $_height"
477
478	set _legendPending 1
479	set _resizePending 0
480	}
481
482	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
483	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
484	SendCmd "camera orient $q"
485	set _rotatePending 0
486	}
487
488	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
489	foreach dataset [CurrentDatasets -visible] {
490	foreach {dataobj comp} [split $dataset -] break
491	# This command works for either random or fmesh seeds
492	SendCmd "streamlines seed numpts $_numSeeds $dataset"
493	}
494	set _reseedPending 0
495	}
496
497	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
498	set _width $w
499	set _height $h
500	$_arcball resize $w $h
501	if { !$_resizePending } {
502	set _resizePending 1
503	$_dispatcher event -after 400 !resize
504	}
505	}
506
507	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
508	set _numSeeds $numPoints
509	if { !$_reseedPending } {
510	set _reseedPending 1
511	$_dispatcher event -after 600 !reseed
512	}
513	}
514
515	set rotate_delay 100
516
517	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
518	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
519	if { !$_rotatePending } {
520	set _rotatePending 1
521	global rotate_delay
522	$_dispatcher event -after $rotate_delay !rotate
523	}
524	}
525
526	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
527	if { !$_cutplanePending } {
528	set _cutplanePending 1
529	$_dispatcher event -after 100 !${axis}cutplane
530	}
531	}
532
533	# ----------------------------------------------------------------------
534	# USAGE: add <dataobj> ?<settings>?
535	#
536	# Clients use this to add a data object to the plot. The optional
537	# <settings> are used to configure the plot. Allowed settings are
538	# -color, -brightness, -width, -linestyle, and -raise.
539	# ----------------------------------------------------------------------
540	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
541	array set params {
542	-color auto
543	-width 1
544	-linestyle solid
545	-brightness 0
546	-raise 0
547	-description ""
548	-param ""
549	-type ""
550	}
551	array set params $settings
552	set params(-description) ""
553	set params(-param) ""
554	array set params $settings
555
556	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
557	# can't handle -autocolors yet
558	set params(-color) black
559	}
560	set pos [lsearch -exact $_dlist $dataobj]
561	if {$pos < 0} {
562	lappend _dlist $dataobj
563	}
564	set _obj2ovride($dataobj-color) $params(-color)
565	set _obj2ovride($dataobj-width) $params(-width)
566	set _obj2ovride($dataobj-raise) $params(-raise)
567	$_dispatcher event -idle !rebuild
568	}
569
570
571	# ----------------------------------------------------------------------
572	# USAGE: delete ?<dataobj1> <dataobj2> ...?
573	#
574	# Clients use this to delete a dataobj from the plot. If no dataobjs
575	# are specified, then all dataobjs are deleted. No data objects are
576	# deleted. They are only removed from the display list.
577	#
578	# ----------------------------------------------------------------------
579	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
580	if { [llength $args] == 0} {
581	set args $_dlist
582	}
583	# Delete all specified dataobjs
584	set changed 0
585	foreach dataobj $args {
586	set pos [lsearch -exact $_dlist $dataobj]
587	if { $pos < 0 } {
588	continue; # Don't know anything about it.
589	}
590	# Remove it from the dataobj list.
591	set _dlist [lreplace $_dlist $pos $pos]
592	array unset _obj2ovride $dataobj-*
593	array unset _settings $dataobj-*
594	set changed 1
595	}
596	# If anything changed, then rebuild the plot
597	if { $changed } {
598	$_dispatcher event -idle !rebuild
599	}
600	}
601
602	# ----------------------------------------------------------------------
603	# USAGE: get ?-objects?
604	# USAGE: get ?-visible?
605	# USAGE: get ?-image view?
606	#
607	# Clients use this to query the list of objects being plotted, in
608	# order from bottom to top of this result. The optional "-image"
609	# flag can also request the internal images being shown.
610	# ----------------------------------------------------------------------
611	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
612	if {[llength $args] == 0} {
613	set args "-objects"
614	}
615
616	set op [lindex $args 0]
617	switch -- $op {
618	"-objects" {
619	# put the dataobj list in order according to -raise options
620	set dlist {}
621	foreach dataobj $_dlist {
622	if { ![IsValidObject $dataobj] } {
623	continue
624	}
625	if {[info exists _obj2ovride($dataobj-raise)] &&
626	$_obj2ovride($dataobj-raise)} {
627	set dlist [linsert $dlist 0 $dataobj]
628	} else {
629	lappend dlist $dataobj
630	}
631	}
632	return $dlist
633	}
634	"-visible" {
635	set dlist {}
636	foreach dataobj $_dlist {
637	if { ![IsValidObject $dataobj] } {
638	continue
639	}
640	if { ![info exists _obj2ovride($dataobj-raise)] } {
641	# No setting indicates that the object isn't visible.
642	continue
643	}
644	# Otherwise use the -raise parameter to put the object to
645	# the front of the list.
646	if { $_obj2ovride($dataobj-raise) } {
647	set dlist [linsert $dlist 0 $dataobj]
648	} else {
649	lappend dlist $dataobj
650	}
651	}
652	return $dlist
653	}
654	-image {
655	if {[llength $args] != 2} {
656	error "wrong # args: should be \"get -image view\""
657	}
658	switch -- [lindex $args end] {
659	view {
660	return $_image(plot)
661	}
662	default {
663	error "bad image name \"[lindex $args end]\": should be view"
664	}
665	}
666	}
667	default {
668	error "bad option \"$op\": should be -objects or -image"
669	}
670	}
671	}
672
673	# ----------------------------------------------------------------------
674	# USAGE: scale ?<data1> <data2> ...?
675	#
676	# Sets the default limits for the overall plot according to the
677	# limits of the data for all of the given <data> objects. This
678	# accounts for all objects--even those not showing on the screen.
679	# Because of this, the limits are appropriate for all objects as
680	# the user scans through data in the ResultSet viewer.
681	# ----------------------------------------------------------------------
682	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
683	foreach dataobj $args {
684	foreach axis { x y z } {
685	set lim [$dataobj limits $axis]
686	if { ![info exists _limits($axis)] } {
687	set _limits($axis) $lim
688	continue
689	}
690	foreach {min max} $lim break
691	foreach {amin amax} $_limits($axis) break
692	if { $amin > $min } {
693	set amin $min
694	}
695	if { $amax < $max } {
696	set amax $max
697	}
698	set _limits($axis) [list $amin $amax]
699	}
700	foreach { fname lim } [$dataobj fieldlimits] {
701	if { ![info exists _limits($fname)] } {
702	set _limits($fname) $lim
703	continue
704	}
705	foreach {min max} $lim break
706	foreach {fmin fmax} $_limits($fname) break
707	if { $fmin > $min } {
708	set fmin $min
709	}
710	if { $fmax < $max } {
711	set fmax $max
712	}
713	set _limits($fname) [list $fmin $fmax]
714	}
715	}
716	}
717
718	# ----------------------------------------------------------------------
719	# USAGE: download coming
720	# USAGE: download controls <downloadCommand>
721	# USAGE: download now
722	#
723	# Clients use this method to create a downloadable representation
724	# of the plot. Returns a list of the form {ext string}, where
725	# "ext" is the file extension (indicating the type of data) and
726	# "string" is the data itself.
727	# ----------------------------------------------------------------------
728	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
729	switch $option {
730	coming {
731	if {[catch {
732	blt::winop snap $itk_component(plotarea) $_image(download)
733	}]} {
734	$_image(download) configure -width 1 -height 1
735	$_image(download) put #000000
736	}
737	}
738	controls {
739	set popup .vtkviewerdownload
740	if { ![winfo exists .vtkviewerdownload] } {
741	set inner [BuildDownloadPopup $popup [lindex $args 0]]
742	} else {
743	set inner [$popup component inner]
744	}
745	set _downloadPopup(image_controls) $inner.image_frame
746	set num [llength [get]]
747	set num [expr {($num == 1) ? "1 result" : "$num results"}]
748	set word [Rappture::filexfer::label downloadWord]
749	$inner.summary configure -text "$word $num in the following format:"
750	update idletasks ;# Fix initial sizes
751	return $popup
752	}
753	now {
754	set popup .vtkviewerdownload
755	if {[winfo exists .vtkviewerdownload]} {
756	$popup deactivate
757	}
758	switch -- $_downloadPopup(format) {
759	"image" {
760	return [$this GetImage [lindex $args 0]]
761	}
762	"vtk" {
763	return [$this GetVtkData [lindex $args 0]]
764	}
765	}
766	return ""
767	}
768	default {
769	error "bad option \"$option\": should be coming, controls, now"
770	}
771	}
772	}
773
774	# ----------------------------------------------------------------------
775	# USAGE: Connect ?<host:port>,<host:port>...?
776	#
777	# Clients use this method to establish a connection to a new
778	# server, or to reestablish a connection to the previous server.
779	# Any existing connection is automatically closed.
780	# ----------------------------------------------------------------------
781	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
782	set _hosts [GetServerList "vtkvis"]
783	if { "" == $_hosts } {
784	return 0
785	}
786	set result [VisViewer::Connect $_hosts]
787	if { $result } {
788	if { $_reportClientInfo } {
789	# Tell the server the viewer, hub, user and session.
790	# Do this immediately on connect before buffing any commands
791	global env
792
793	set info {}
794	set user "???"
795	if { [info exists env(USER)] } {
796	set user $env(USER)
797	}
798	set session "???"
799	if { [info exists env(SESSION)] } {
800	set session $env(SESSION)
801	}
802	lappend info "hub" [exec hostname]
803	lappend info "client" "vtkstreamlinesviewer"
804	lappend info "user" $user
805	lappend info "session" $session
806	SendCmd "clientinfo [list $info]"
807	}
808
809	set w [winfo width $itk_component(view)]
810	set h [winfo height $itk_component(view)]
811	EventuallyResize $w $h
812	}
813	return $result
814	}
815
816	#
817	# isconnected --
818	#
819	# Indicates if we are currently connected to the visualization server.
820	#
821	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
822	return [VisViewer::IsConnected]
823	}
824
825	#
826	# disconnect --
827	#
828	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
829	Disconnect
830	set _reset 1
831	}
832
833	#
834	# Disconnect --
835	#
836	# Clients use this method to disconnect from the current rendering
837	# server.
838	#
839	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
840	VisViewer::Disconnect
841
842	$_dispatcher cancel !rebuild
843	$_dispatcher cancel !resize
844	$_dispatcher cancel !reseed
845	$_dispatcher cancel !rotate
846	$_dispatcher cancel !xcutplane
847	$_dispatcher cancel !ycutplane
848	$_dispatcher cancel !zcutplane
849	$_dispatcher cancel !legend
850	# disconnected -- no more data sitting on server
851	array unset _datasets
852	array unset _data
853	array unset _colormaps
854	array unset _seeds
855	array unset _dataset2style
856	array unset _obj2datasets
857	}
858
859	# ----------------------------------------------------------------------
860	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
861	#
862	# Invoked automatically whenever the "image" command comes in from
863	# the rendering server. Indicates that binary image data with the
864	# specified <size> will follow.
865	# ----------------------------------------------------------------------
866	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
867	array set info {
868	-token "???"
869	-bytes 0
870	-type image
871	}
872	array set info $args
873	set bytes [ReceiveBytes $info(-bytes)]
874	if { $info(-type) == "image" } {
875	if 0 {
876	set f [open "last.ppm" "w"]
877	puts $f $bytes
878	close $f
879	}
880	$_image(plot) configure -data $bytes
881	set time [clock seconds]
882	set date [clock format $time]
883	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
884	if { $_start > 0 } {
885	set finish [clock clicks -milliseconds]
886	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
887	set _start 0
888	}
889	} elseif { $info(type) == "print" } {
890	set tag $this-print-$info(-token)
891	set _hardcopy($tag) $bytes
892	}
893	if { $_legendPending } {
894	RequestLegend
895	}
896	}
897
898	#
899	# ReceiveDataset --
900	#
901	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
902	if { ![isconnected] } {
903	return
904	}
905	set option [lindex $args 0]
906	switch -- $option {
907	"scalar" {
908	set option [lindex $args 1]
909	switch -- $option {
910	"world" {
911	foreach { x y z value tag } [lrange $args 2 end] break
912	}
913	"pixel" {
914	foreach { x y value tag } [lrange $args 2 end] break
915	}
916	}
917	}
918	"vector" {
919	set option [lindex $args 1]
920	switch -- $option {
921	"world" {
922	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
923	}
924	"pixel" {
925	foreach { x y vx vy vz tag } [lrange $args 2 end] break
926	}
927	}
928	}
929	"names" {
930	foreach { name } [lindex $args 1] {
931	#puts stderr "Dataset: $name"
932	}
933	}
934	default {
935	error "unknown dataset option \"$option\" from server"
936	}
937	}
938	}
939
940	# ----------------------------------------------------------------------
941	# USAGE: Rebuild
942	#
943	# Called automatically whenever something changes that affects the
944	# data in the widget. Clears any existing data and rebuilds the
945	# widget to display new data.
946	# ----------------------------------------------------------------------
947	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
948	update
949	set w [winfo width $itk_component(view)]
950	set h [winfo height $itk_component(view)]
951	if { $w < 2 \|\| $h < 2 } {
952	$_dispatcher event -idle !rebuild
953	return
954	}
955
956	# Turn on buffering of commands to the server. We don't want to
957	# be preempted by a server disconnect/reconnect (which automatically
958	# generates a new call to Rebuild).
959	StartBufferingCommands
960	set _legendPending 1
961
962	set _first ""
963	if { $_reset } {
964	set _width $w
965	set _height $h
966	$_arcball resize $w $h
967	DoResize
968	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
969	axesVisible axisLabelsVisible
970	# This "imgflush" is to force an image returned before vtkvis starts
971	# reading a (big) dataset. This will display an empty plot with axes
972	# at the correct image size.
973	SendCmd "imgflush"
974	}
975
976	set _first ""
977	SendCmd "dataset visible 0"
978	foreach dataobj [get -objects] {
979	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
980	set _first $dataobj
981	}
982	set _obj2datasets($dataobj) ""
983	foreach comp [$dataobj components] {
984	set tag $dataobj-$comp
985	if { ![info exists _datasets($tag)] } {
986	set bytes [$dataobj vtkdata $comp]
987	set length [string length $bytes]
988	if 0 {
989	set f [open /tmp/vtkstreamlines.vtk "w"]
990	fconfigure $f -translation binary -encoding binary
991	puts $f $bytes
992	close $f
993	}
994	if { $_reportClientInfo } {
995	set info {}
996	lappend info "tool_id" [$dataobj hints toolid]
997	lappend info "tool_name" [$dataobj hints toolname]
998	lappend info "tool_title" [$dataobj hints tooltitle]
999	lappend info "tool_command" [$dataobj hints toolcommand]
1000	lappend info "tool_revision" [$dataobj hints toolrevision]
1001	lappend info "dataset_label" [$dataobj hints label]
1002	lappend info "dataset_size" $length
1003	lappend info "dataset_tag" $tag
1004	SendCmd "clientinfo [list $info]"
1005	}
1006	SendCmd "dataset add $tag data follows $length"
1007	append _outbuf $bytes
1008	set _datasets($tag) 1
1009	SetObjectStyle $dataobj $comp
1010	}
1011	lappend _obj2datasets($dataobj) $tag
1012	if { [info exists _obj2ovride($dataobj-raise)] } {
1013	SendCmd "dataset visible 1 $tag"
1014	}
1015	}
1016	}
1017	if {"" != $_first} {
1018	set location [$_first hints camera]
1019	if { $location != "" } {
1020	array set view $location
1021	}
1022	foreach axis { x y z } {
1023	set label [$_first hints ${axis}label]
1024	if { $label != "" } {
1025	SendCmd "axis name $axis $label"
1026	}
1027	set units [$_first hints ${axis}units]
1028	if { $units != "" } {
1029	SendCmd "axis units $axis $units"
1030	}
1031	}
1032	$itk_component(field) choices delete 0 end
1033	$itk_component(fieldmenu) delete 0 end
1034	array unset _fields
1035	set _curFldName ""
1036	foreach cname [$_first components] {
1037	foreach fname [$_first fieldnames $cname] {
1038	if { [info exists _fields($fname)] } {
1039	continue
1040	}
1041	foreach { label units components } \
1042	[$_first fieldinfo $fname] break
1043	$itk_component(field) choices insert end "$fname" "$label"
1044	$itk_component(fieldmenu) add radiobutton -label "$label" \
1045	-value $label -variable [itcl::scope _curFldLabel] \
1046	-selectcolor red \
1047	-activebackground $itk_option(-plotbackground) \
1048	-activeforeground $itk_option(-plotforeground) \
1049	-font "Arial 8" \
1050	-command [itcl::code $this Combo invoke]
1051	set _fields($fname) [list $label $units $components]
1052	if { $_curFldName == "" } {
1053	set _curFldName $fname
1054	set _curFldLabel $label
1055	}
1056	}
1057	}
1058	$itk_component(field) value $_curFldLabel
1059	}
1060
1061	if { $_reset } {
1062	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1063	streamlinesVisible streamlinesColormap \
1064	streamlinesLighting \
1065	streamlinesColormap field \
1066	volumeVisible volumeEdges volumeLighting volumeOpacity \
1067	volumeWireframe \
1068	cutplaneVisible \
1069	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1070	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1071
1072	# Reset the camera and other view parameters
1073	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1074	$_arcball quaternion $q
1075	if {$_view(ortho)} {
1076	SendCmd "camera mode ortho"
1077	} else {
1078	SendCmd "camera mode persp"
1079	}
1080	DoRotate
1081	PanCamera
1082	Zoom reset
1083	SendCmd "camera reset"
1084	set _reset 0
1085	}
1086	# Actually write the commands to the server socket. If it fails, we don't
1087	# care. We're finished here.
1088	blt::busy hold $itk_component(hull)
1089	StopBufferingCommands
1090	blt::busy release $itk_component(hull)
1091	}
1092
1093	# ----------------------------------------------------------------------
1094	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1095	#
1096	# Returns a list of server IDs for the current datasets being displayed. This
1097	# is normally a single ID, but it might be a list of IDs if the current data
1098	# object has multiple components.
1099	# ----------------------------------------------------------------------
1100	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1101	set flag [lindex $args 0]
1102	switch -- $flag {
1103	"-all" {
1104	if { [llength $args] > 1 } {
1105	error "CurrentDatasets: can't specify dataobj after \"-all\""
1106	}
1107	set dlist [get -objects]
1108	}
1109	"-visible" {
1110	if { [llength $args] > 1 } {
1111	set dlist {}
1112	set args [lrange $args 1 end]
1113	foreach dataobj $args {
1114	if { [info exists _obj2ovride($dataobj-raise)] } {
1115	lappend dlist $dataobj
1116	}
1117	}
1118	} else {
1119	set dlist [get -visible]
1120	}
1121	}
1122	default {
1123	set dlist $args
1124	}
1125	}
1126	set rlist ""
1127	foreach dataobj $dlist {
1128	foreach comp [$dataobj components] {
1129	set tag $dataobj-$comp
1130	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1131	lappend rlist $tag
1132	}
1133	}
1134	}
1135	return $rlist
1136	}
1137
1138	# ----------------------------------------------------------------------
1139	# USAGE: Zoom in
1140	# USAGE: Zoom out
1141	# USAGE: Zoom reset
1142	#
1143	# Called automatically when the user clicks on one of the zoom
1144	# controls for this widget. Changes the zoom for the current view.
1145	# ----------------------------------------------------------------------
1146	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1147	switch -- $option {
1148	"in" {
1149	set _view(zoom) [expr {$_view(zoom)*1.25}]
1150	SendCmd "camera zoom $_view(zoom)"
1151	}
1152	"out" {
1153	set _view(zoom) [expr {$_view(zoom)*0.8}]
1154	SendCmd "camera zoom $_view(zoom)"
1155	}
1156	"reset" {
1157	array set _view {
1158	qw 0.853553
1159	qx -0.353553
1160	qy 0.353553
1161	qz 0.146447
1162	zoom 1.0
1163	xpan 0
1164	ypan 0
1165	}
1166	if { $_first != "" } {
1167	set location [$_first hints camera]
1168	if { $location != "" } {
1169	array set _view $location
1170	}
1171	}
1172	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1173	$_arcball quaternion $q
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	# ----------------------------------------------------------------------
1188	# USAGE: Rotate click <x> <y>
1189	# USAGE: Rotate drag <x> <y>
1190	# USAGE: Rotate release <x> <y>
1191	#
1192	# Called automatically when the user clicks/drags/releases in the
1193	# plot area. Moves the plot according to the user's actions.
1194	# ----------------------------------------------------------------------
1195	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1196	switch -- $option {
1197	"click" {
1198	$itk_component(view) configure -cursor fleur
1199	set _click(x) $x
1200	set _click(y) $y
1201	}
1202	"drag" {
1203	if {[array size _click] == 0} {
1204	Rotate click $x $y
1205	} else {
1206	set w [winfo width $itk_component(view)]
1207	set h [winfo height $itk_component(view)]
1208	if {$w <= 0 \|\| $h <= 0} {
1209	return
1210	}
1211
1212	if {[catch {
1213	# this fails sometimes for no apparent reason
1214	set dx [expr {double($x-$_click(x))/$w}]
1215	set dy [expr {double($y-$_click(y))/$h}]
1216	}]} {
1217	return
1218	}
1219	if { $dx == 0 && $dy == 0 } {
1220	return
1221	}
1222	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1223	EventuallyRotate $q
1224	set _click(x) $x
1225	set _click(y) $y
1226	}
1227	}
1228	"release" {
1229	Rotate drag $x $y
1230	$itk_component(view) configure -cursor ""
1231	catch {unset _click}
1232	}
1233	default {
1234	error "bad option \"$option\": should be click, drag, release"
1235	}
1236	}
1237	}
1238
1239	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1240	foreach tag [CurrentDatasets -visible] {
1241	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1242	}
1243	}
1244
1245	# ----------------------------------------------------------------------
1246	# USAGE: $this Pan click x y
1247	# $this Pan drag x y
1248	# $this Pan release x y
1249	#
1250	# Called automatically when the user clicks on one of the zoom
1251	# controls for this widget. Changes the zoom for the current view.
1252	# ----------------------------------------------------------------------
1253	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1254	switch -- $option {
1255	"set" {
1256	set w [winfo width $itk_component(view)]
1257	set h [winfo height $itk_component(view)]
1258	set x [expr $x / double($w)]
1259	set y [expr $y / double($h)]
1260	set _view(xpan) [expr $_view(xpan) + $x]
1261	set _view(ypan) [expr $_view(ypan) + $y]
1262	PanCamera
1263	return
1264	}
1265	"click" {
1266	set _click(x) $x
1267	set _click(y) $y
1268	$itk_component(view) configure -cursor hand1
1269	}
1270	"drag" {
1271	if { ![info exists _click(x)] } {
1272	set _click(x) $x
1273	}
1274	if { ![info exists _click(y)] } {
1275	set _click(y) $y
1276	}
1277	set w [winfo width $itk_component(view)]
1278	set h [winfo height $itk_component(view)]
1279	set dx [expr ($_click(x) - $x)/double($w)]
1280	set dy [expr ($_click(y) - $y)/double($h)]
1281	set _click(x) $x
1282	set _click(y) $y
1283	set _view(xpan) [expr $_view(xpan) - $dx]
1284	set _view(ypan) [expr $_view(ypan) - $dy]
1285	PanCamera
1286	}
1287	"release" {
1288	Pan drag $x $y
1289	$itk_component(view) configure -cursor ""
1290	}
1291	default {
1292	error "unknown option \"$option\": should set, click, drag, or release"
1293	}
1294	}
1295	}
1296
1297	# ----------------------------------------------------------------------
1298	# USAGE: InitSettings <what> ?<value>?
1299	#
1300	# Used internally to update rendering settings whenever parameters
1301	# change in the popup settings panel. Sends the new settings off
1302	# to the back end.
1303	# ----------------------------------------------------------------------
1304	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1305	foreach spec $args {
1306	if { [info exists _settings($_first-$spec)] } {
1307	# Reset global setting with dataobj specific setting
1308	set _settings($spec) $_settings($_first-$spec)
1309	}
1310	AdjustSetting $spec
1311	}
1312	}
1313
1314	#
1315	# AdjustSetting --
1316	#
1317	# Changes/updates a specific setting in the widget. There are
1318	# usually user-setable option. Commands are sent to the render
1319	# server.
1320	#
1321	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1322	if { ![isconnected] } {
1323	return
1324	}
1325	switch -- $what {
1326	"volumeOpacity" {
1327	set val $_settings(volumeOpacity)
1328	set sval [expr { 0.01 * double($val) }]
1329	SendCmd "polydata opacity $sval"
1330	}
1331	"volumeWireframe" {
1332	set bool $_settings(volumeWireframe)
1333	SendCmd "polydata wireframe $bool"
1334	}
1335	"volumeVisible" {
1336	set bool $_settings(volumeVisible)
1337	SendCmd "polydata visible $bool"
1338	if { $bool } {
1339	Rappture::Tooltip::for $itk_component(volume) \
1340	"Hide the volume"
1341	} else {
1342	Rappture::Tooltip::for $itk_component(volume) \
1343	"Show the volume"
1344	}
1345	}
1346	"volumeLighting" {
1347	set bool $_settings(volumeLighting)
1348	SendCmd "polydata lighting $bool"
1349	}
1350	"volumeEdges" {
1351	set bool $_settings(volumeEdges)
1352	SendCmd "polydata edges $bool"
1353	}
1354	"axesVisible" {
1355	set bool $_settings(axesVisible)
1356	SendCmd "axis visible all $bool"
1357	}
1358	"axisLabelsVisible" {
1359	set bool $_settings(axisLabelsVisible)
1360	SendCmd "axis labels all $bool"
1361	}
1362	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1363	set axis [string tolower [string range $what 4 4]]
1364	set bool $_settings($what)
1365	SendCmd "axis grid $axis $bool"
1366	}
1367	"axis-mode" {
1368	set mode [$itk_component(axismode) value]
1369	set mode [$itk_component(axismode) translate $mode]
1370	set _settings($what) $mode
1371	SendCmd "axis flymode $mode"
1372	}
1373	"cutplaneEdges" {
1374	set bool $_settings($what)
1375	SendCmd "cutplane edges $bool"
1376	}
1377	"cutplaneVisible" {
1378	set bool $_settings($what)
1379	SendCmd "cutplane visible $bool"
1380	}
1381	"cutplaneWireframe" {
1382	set bool $_settings($what)
1383	SendCmd "cutplane wireframe $bool"
1384	}
1385	"cutplaneLighting" {
1386	set bool $_settings($what)
1387	SendCmd "cutplane lighting $bool"
1388	}
1389	"cutplaneOpacity" {
1390	set val $_settings($what)
1391	set sval [expr { 0.01 * double($val) }]
1392	SendCmd "cutplane opacity $sval"
1393	}
1394	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1395	set axis [string tolower [string range $what 8 8]]
1396	set bool $_settings($what)
1397	if { $bool } {
1398	$itk_component(${axis}CutScale) configure -state normal \
1399	-troughcolor white
1400	} else {
1401	$itk_component(${axis}CutScale) configure -state disabled \
1402	-troughcolor grey82
1403	}
1404	SendCmd "cutplane axis $axis $bool"
1405	}
1406	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1407	set axis [string tolower [string range $what 8 8]]
1408	set pos [expr $_settings($what) * 0.01]
1409	SendCmd "cutplane slice ${axis} ${pos}"
1410	set _cutplanePending 0
1411	}
1412	"streamlinesSeedsVisible" {
1413	set bool $_settings($what)
1414	SendCmd "streamlines seed visible $bool"
1415	}
1416	"streamlinesNumSeeds" {
1417	set density $_settings($what)
1418	EventuallyReseed $density
1419	}
1420	"streamlinesVisible" {
1421	set bool $_settings($what)
1422	SendCmd "streamlines visible $bool"
1423	if { $bool } {
1424	Rappture::Tooltip::for $itk_component(streamlines) \
1425	"Hide the streamlines"
1426	} else {
1427	Rappture::Tooltip::for $itk_component(streamlines) \
1428	"Show the streamlines"
1429	}
1430	}
1431	"streamlinesMode" {
1432	set mode [$itk_component(streammode) value]
1433	set _settings(streamlinesMode) $mode
1434	switch -- $mode {
1435	"lines" {
1436	SendCmd "streamlines lines"
1437	}
1438	"ribbons" {
1439	SendCmd "streamlines ribbons 3 0"
1440	}
1441	"tubes" {
1442	SendCmd "streamlines tubes 5 3"
1443	}
1444	}
1445	}
1446	"streamlinesColormap" {
1447	set colormap [$itk_component(colormap) value]
1448	set _settings(streamlinesColormap) $colormap
1449	foreach dataset [CurrentDatasets -visible $_first] {
1450	foreach {dataobj comp} [split $dataset -] break
1451	ChangeColormap $dataobj $comp $colormap
1452	}
1453	set _legendPending 1
1454	}
1455	"streamlinesOpacity" {
1456	set val $_settings(streamlinesOpacity)
1457	set sval [expr { 0.01 * double($val) }]
1458	SendCmd "streamlines opacity $sval"
1459	}
1460	"streamlinesScale" {
1461	set val $_settings(streamlinesScale)
1462	set sval [expr { 0.01 * double($val) }]
1463	SendCmd "streamlines scale $sval $sval $sval"
1464	}
1465	"streamlinesLighting" {
1466	set bool $_settings(streamlinesLighting)
1467	SendCmd "streamlines lighting $bool"
1468	}
1469	"field" {
1470	set label [$itk_component(field) value]
1471	set fname [$itk_component(field) translate $label]
1472	set _settings(field) $fname
1473	if { [info exists _fields($fname)] } {
1474	foreach { label units components } $_fields($fname) break
1475	if { $components > 1 } {
1476	set _colorMode vmag
1477	} else {
1478	set _colorMode scalar
1479	}
1480	set _curFldName $fname
1481	set _curFldLabel $label
1482	} else {
1483	puts stderr "unknown field \"$fname\""
1484	return
1485	}
1486	# Get the new limits because the field changed.
1487	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1488	SendCmd "streamlines colormode $_colorMode $_curFldName"
1489	SendCmd "cutplane colormode $_colorMode $_curFldName"
1490	DrawLegend
1491	}
1492	default {
1493	error "don't know how to fix $what"
1494	}
1495	}
1496	}
1497
1498	#
1499	# RequestLegend --
1500	#
1501	# Request a new legend from the server. The size of the legend
1502	# is determined from the height of the canvas. It will be rotated
1503	# to be vertical when drawn.
1504	#
1505	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1506	set font "Arial 8"
1507	set lineht [font metrics $font -linespace]
1508	set c $itk_component(legend)
1509	set w 12
1510	set h [expr {$_height - 3 * ($lineht + 2)}]
1511	if { $h < 1} {
1512	return
1513	}
1514	# Set the legend on the first streamlines dataset.
1515	foreach dataset [CurrentDatasets -visible $_first] {
1516	foreach {dataobj comp} [split $dataset -] break
1517	if { [info exists _dataset2style($dataset)] } {
1518	SendCmdNoWait \
1519	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1520	break;
1521	}
1522	}
1523	}
1524
1525	#
1526	# ChangeColormap --
1527	#
1528	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1529	set tag $dataobj-$comp
1530	if { ![info exist _style($tag)] } {
1531	error "no initial colormap"
1532	}
1533	array set style $_style($tag)
1534	set style(-color) $color
1535	set _style($tag) [array get style]
1536	SetColormap $dataobj $comp
1537	}
1538
1539	#
1540	# SetColormap --
1541	#
1542	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1543	array set style {
1544	-color BCGYR
1545	-levels 6
1546	-opacity 1.0
1547	}
1548	set tag $dataobj-$comp
1549	if { ![info exists _initialStyle($tag)] } {
1550	# Save the initial component style.
1551	set _initialStyle($tag) [$dataobj style $comp]
1552	}
1553
1554	# Override defaults with initial style defined in xml.
1555	array set style $_initialStyle($tag)
1556
1557	if { ![info exists _style($tag)] } {
1558	set _style($tag) [array get style]
1559	}
1560	# Override initial style with current style.
1561	array set style $_style($tag)
1562
1563	set name "$style(-color):$style(-levels):$style(-opacity)"
1564	if { ![info exists _colormaps($name)] } {
1565	BuildColormap $name [array get style]
1566	set _colormaps($name) 1
1567	}
1568	if { ![info exists _dataset2style($tag)] \|\|
1569	$_dataset2style($tag) != $name } {
1570	SendCmd "streamlines colormap $name $tag"
1571	SendCmd "cutplane colormap $name $tag"
1572	set _dataset2style($tag) $name
1573	}
1574	}
1575
1576
1577	#
1578	# BuildColormap --
1579	#
1580	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1581	array set style $styles
1582	set cmap [ColorsToColormap $style(-color)]
1583	if { [llength $cmap] == 0 } {
1584	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1585	}
1586	if { ![info exists _settings(volumeOpacity)] } {
1587	set _settings(volumeOpacity) $style(-opacity)
1588	}
1589	set max $_settings(volumeOpacity)
1590
1591	set wmap "0.0 1.0 1.0 1.0"
1592	SendCmd "colormap add $name { $cmap } { $wmap }"
1593	}
1594
1595	# ----------------------------------------------------------------------
1596	# CONFIGURATION OPTION: -plotbackground
1597	# ----------------------------------------------------------------------
1598	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1599	if { [isconnected] } {
1600	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1601	SendCmd "screen bgcolor $r $g $b"
1602	}
1603	}
1604
1605	# ----------------------------------------------------------------------
1606	# CONFIGURATION OPTION: -plotforeground
1607	# ----------------------------------------------------------------------
1608	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1609	if { [isconnected] } {
1610	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1611	#fix this!
1612	#SendCmd "color background $r $g $b"
1613	}
1614	}
1615
1616	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1617
1618	set fg [option get $itk_component(hull) font Font]
1619	#set bfg [option get $itk_component(hull) boldFont Font]
1620
1621	set inner [$itk_component(main) insert end \
1622	-title "Volume Settings" \
1623	-icon [Rappture::icon volume-on]]
1624	$inner configure -borderwidth 4
1625
1626	checkbutton $inner.volume \
1627	-text "Show Volume" \
1628	-variable [itcl::scope _settings(volumeVisible)] \
1629	-command [itcl::code $this AdjustSetting volumeVisible] \
1630	-font "Arial 9"
1631
1632	checkbutton $inner.wireframe \
1633	-text "Show Wireframe" \
1634	-variable [itcl::scope _settings(volumeWireframe)] \
1635	-command [itcl::code $this AdjustSetting volumeWireframe] \
1636	-font "Arial 9"
1637
1638	checkbutton $inner.lighting \
1639	-text "Enable Lighting" \
1640	-variable [itcl::scope _settings(volumeLighting)] \
1641	-command [itcl::code $this AdjustSetting volumeLighting] \
1642	-font "Arial 9"
1643
1644	checkbutton $inner.edges \
1645	-text "Show Edges" \
1646	-variable [itcl::scope _settings(volumeEdges)] \
1647	-command [itcl::code $this AdjustSetting volumeEdges] \
1648	-font "Arial 9"
1649
1650	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1651	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1652	-variable [itcl::scope _settings(volumeOpacity)] \
1653	-width 10 \
1654	-showvalue off \
1655	-command [itcl::code $this AdjustSetting volumeOpacity]
1656
1657	blt::table $inner \
1658	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1659	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1660	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1661	3,0 $inner.opacity_l -anchor w -pady 2 \
1662	3,1 $inner.opacity -fill x -pady 2
1663
1664	blt::table configure $inner r* c* -resize none
1665	blt::table configure $inner r4 c1 -resize expand
1666	}
1667
1668
1669	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1670
1671	set fg [option get $itk_component(hull) font Font]
1672	#set bfg [option get $itk_component(hull) boldFont Font]
1673
1674	set inner [$itk_component(main) insert end \
1675	-title "Streams Settings" \
1676	-icon [Rappture::icon streamlines-on]]
1677	$inner configure -borderwidth 4
1678
1679	checkbutton $inner.streamlines \
1680	-text "Show Streamlines" \
1681	-variable [itcl::scope _settings(streamlinesVisible)] \
1682	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1683	-font "Arial 9"
1684
1685	checkbutton $inner.lighting \
1686	-text "Enable Lighting" \
1687	-variable [itcl::scope _settings(streamlinesLighting)] \
1688	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1689	-font "Arial 9"
1690
1691	checkbutton $inner.seeds \
1692	-text "Show Seeds" \
1693	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1694	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1695	-font "Arial 9"
1696
1697	label $inner.mode_l -text "Mode" -font "Arial 9"
1698	itk_component add streammode {
1699	Rappture::Combobox $inner.mode -width 10 -editable no
1700	}
1701	$inner.mode choices insert end \
1702	"lines" "lines" \
1703	"ribbons" "ribbons" \
1704	"tubes" "tubes"
1705	$itk_component(streammode) value $_settings(streamlinesMode)
1706	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1707
1708	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1709	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1710	-variable [itcl::scope _settings(streamlinesOpacity)] \
1711	-width 10 \
1712	-showvalue off \
1713	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1714
1715	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1716	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1717	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1718	-width 10 \
1719	-showvalue on \
1720	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1721
1722	label $inner.scale_l -text "Scale" -font "Arial 9"
1723	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1724	-variable [itcl::scope _settings(streamlinesScale)] \
1725	-width 10 \
1726	-showvalue off \
1727	-command [itcl::code $this AdjustSetting streamlinesScale]
1728
1729	label $inner.field_l -text "Color by" -font "Arial 9"
1730	itk_component add field {
1731	Rappture::Combobox $inner.field -width 10 -editable no
1732	}
1733	bind $inner.field <<Value>> \
1734	[itcl::code $this AdjustSetting field]
1735
1736	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1737	itk_component add colormap {
1738	Rappture::Combobox $inner.colormap -width 10 -editable no
1739	}
1740	$inner.colormap choices insert end \
1741	"BCGYR" "BCGYR" \
1742	"BGYOR" "BGYOR" \
1743	"blue" "blue" \
1744	"blue-to-brown" "blue-to-brown" \
1745	"blue-to-orange" "blue-to-orange" \
1746	"blue-to-grey" "blue-to-grey" \
1747	"green-to-magenta" "green-to-magenta" \
1748	"greyscale" "greyscale" \
1749	"nanohub" "nanohub" \
1750	"rainbow" "rainbow" \
1751	"spectral" "spectral" \
1752	"ROYGB" "ROYGB" \
1753	"RYGCB" "RYGCB" \
1754	"brown-to-blue" "brown-to-blue" \
1755	"grey-to-blue" "grey-to-blue" \
1756	"orange-to-blue" "orange-to-blue"
1757
1758	$itk_component(colormap) value "BCGYR"
1759	bind $inner.colormap <<Value>> \
1760	[itcl::code $this AdjustSetting streamlinesColormap]
1761
1762	blt::table $inner \
1763	0,0 $inner.field_l -anchor w -pady 2 \
1764	0,1 $inner.field -fill x -pady 2 \
1765	1,0 $inner.colormap_l -anchor w -pady 2 \
1766	1,1 $inner.colormap -fill x -pady 2 \
1767	2,0 $inner.mode_l -anchor w -pady 2 \
1768	2,1 $inner.mode -fill x -pady 2 \
1769	3,0 $inner.opacity_l -anchor w -pady 2 \
1770	3,1 $inner.opacity -fill x -pady 2 \
1771	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1772	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1773	7,0 $inner.density_l -anchor w -pady 2 \
1774	7,1 $inner.density -fill x -pady 2 \
1775
1776	blt::table configure $inner r* c* -resize none
1777	blt::table configure $inner r10 c1 c2 -resize expand
1778	}
1779
1780	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1781
1782	set fg [option get $itk_component(hull) font Font]
1783	#set bfg [option get $itk_component(hull) boldFont Font]
1784
1785	set inner [$itk_component(main) insert end \
1786	-title "Axis Settings" \
1787	-icon [Rappture::icon axis1]]
1788	$inner configure -borderwidth 4
1789
1790	checkbutton $inner.visible \
1791	-text "Show Axes" \
1792	-variable [itcl::scope _settings(axesVisible)] \
1793	-command [itcl::code $this AdjustSetting axesVisible] \
1794	-font "Arial 9"
1795
1796	checkbutton $inner.labels \
1797	-text "Show Axis Labels" \
1798	-variable [itcl::scope _settings(axisLabelsVisible)] \
1799	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1800	-font "Arial 9"
1801
1802	checkbutton $inner.xgrid \
1803	-text "Show X Grid" \
1804	-variable [itcl::scope _settings(axisXGrid)] \
1805	-command [itcl::code $this AdjustSetting axisXGrid] \
1806	-font "Arial 9"
1807	checkbutton $inner.ygrid \
1808	-text "Show Y Grid" \
1809	-variable [itcl::scope _settings(axisYGrid)] \
1810	-command [itcl::code $this AdjustSetting axisYGrid] \
1811	-font "Arial 9"
1812	checkbutton $inner.zgrid \
1813	-text "Show Z Grid" \
1814	-variable [itcl::scope _settings(axisZGrid)] \
1815	-command [itcl::code $this AdjustSetting axisZGrid] \
1816	-font "Arial 9"
1817
1818	label $inner.mode_l -text "Mode" -font "Arial 9"
1819
1820	itk_component add axismode {
1821	Rappture::Combobox $inner.mode -width 10 -editable no
1822	}
1823	$inner.mode choices insert end \
1824	"static_triad" "static" \
1825	"closest_triad" "closest" \
1826	"furthest_triad" "furthest" \
1827	"outer_edges" "outer"
1828	$itk_component(axismode) value "static"
1829	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1830
1831	blt::table $inner \
1832	0,0 $inner.visible -anchor w -cspan 2 \
1833	1,0 $inner.labels -anchor w -cspan 2 \
1834	2,0 $inner.xgrid -anchor w -cspan 2 \
1835	3,0 $inner.ygrid -anchor w -cspan 2 \
1836	4,0 $inner.zgrid -anchor w -cspan 2 \
1837	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1838	6,0 $inner.mode -fill x -cspan 2
1839
1840	blt::table configure $inner r* c* -resize none
1841	blt::table configure $inner r7 c1 -resize expand
1842	}
1843
1844
1845	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1846	set inner [$itk_component(main) insert end \
1847	-title "Camera Settings" \
1848	-icon [Rappture::icon camera]]
1849	$inner configure -borderwidth 4
1850
1851	label $inner.view_l -text "view" -font "Arial 9"
1852	set f [frame $inner.view]
1853	foreach side { front back left right top bottom } {
1854	button $f.$side -image [Rappture::icon view$side] \
1855	-command [itcl::code $this SetOrientation $side]
1856	Rappture::Tooltip::for $f.$side "Change the view to $side"
1857	pack $f.$side -side left
1858	}
1859
1860	blt::table $inner \
1861	0,0 $inner.view_l -anchor e -pady 2 \
1862	0,1 $inner.view -anchor w -pady 2
1863
1864	set labels { qx qy qz qw xpan ypan zoom }
1865	set row 1
1866	foreach tag $labels {
1867	label $inner.${tag}label -text $tag -font "Arial 9"
1868	entry $inner.${tag} -font "Arial 9" -bg white \
1869	-textvariable [itcl::scope _view($tag)]
1870	bind $inner.${tag} <KeyPress-Return> \
1871	[itcl::code $this camera set ${tag}]
1872	blt::table $inner \
1873	$row,0 $inner.${tag}label -anchor e -pady 2 \
1874	$row,1 $inner.${tag} -anchor w -pady 2
1875	blt::table configure $inner r$row -resize none
1876	incr row
1877	}
1878	checkbutton $inner.ortho \
1879	-text "Orthographic Projection" \
1880	-variable [itcl::scope _view(ortho)] \
1881	-command [itcl::code $this camera set ortho] \
1882	-font "Arial 9"
1883	blt::table $inner \
1884	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1885	blt::table configure $inner r$row -resize none
1886	incr row
1887
1888	blt::table configure $inner c* r* -resize none
1889	blt::table configure $inner c2 -resize expand
1890	blt::table configure $inner r$row -resize expand
1891	}
1892
1893	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1894
1895	set fg [option get $itk_component(hull) font Font]
1896
1897	set inner [$itk_component(main) insert end \
1898	-title "Cutplane Settings" \
1899	-icon [Rappture::icon cutbutton]]
1900
1901	$inner configure -borderwidth 4
1902
1903	checkbutton $inner.visible \
1904	-text "Show Cutplanes" \
1905	-variable [itcl::scope _settings(cutplaneVisible)] \
1906	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1907	-font "Arial 9"
1908
1909	checkbutton $inner.wireframe \
1910	-text "Show Wireframe" \
1911	-variable [itcl::scope _settings(cutplaneWireframe)] \
1912	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1913	-font "Arial 9"
1914
1915	checkbutton $inner.lighting \
1916	-text "Enable Lighting" \
1917	-variable [itcl::scope _settings(cutplaneLighting)] \
1918	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1919	-font "Arial 9"
1920
1921	checkbutton $inner.edges \
1922	-text "Show Edges" \
1923	-variable [itcl::scope _settings(cutplaneEdges)] \
1924	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1925	-font "Arial 9"
1926
1927	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1928	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1929	-variable [itcl::scope _settings(cutplaneOpacity)] \
1930	-width 10 \
1931	-showvalue off \
1932	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1933	$inner.opacity set $_settings(cutplaneOpacity)
1934
1935	# X-value slicer...
1936	itk_component add xCutButton {
1937	Rappture::PushButton $inner.xbutton \
1938	-onimage [Rappture::icon x-cutplane-red] \
1939	-offimage [Rappture::icon x-cutplane-red] \
1940	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1941	-variable [itcl::scope _settings(cutplaneXVisible)]
1942	}
1943	Rappture::Tooltip::for $itk_component(xCutButton) \
1944	"Toggle the X-axis cutplane on/off"
1945	$itk_component(xCutButton) select
1946
1947	itk_component add xCutScale {
1948	::scale $inner.xval -from 100 -to 0 \
1949	-width 10 -orient vertical -showvalue yes \
1950	-borderwidth 1 -highlightthickness 0 \
1951	-command [itcl::code $this EventuallySetCutplane x] \
1952	-variable [itcl::scope _settings(cutplaneXPosition)] \
1953	-foreground red3 -font "Arial 9 bold"
1954	} {
1955	usual
1956	ignore -borderwidth -highlightthickness -foreground -font
1957	}
1958	# Set the default cutplane value before disabling the scale.
1959	$itk_component(xCutScale) set 50
1960	$itk_component(xCutScale) configure -state disabled
1961	Rappture::Tooltip::for $itk_component(xCutScale) \
1962	"@[itcl::code $this Slice tooltip x]"
1963
1964	# Y-value slicer...
1965	itk_component add yCutButton {
1966	Rappture::PushButton $inner.ybutton \
1967	-onimage [Rappture::icon y-cutplane-green] \
1968	-offimage [Rappture::icon y-cutplane-green] \
1969	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1970	-variable [itcl::scope _settings(cutplaneYVisible)]
1971	}
1972	Rappture::Tooltip::for $itk_component(yCutButton) \
1973	"Toggle the Y-axis cutplane on/off"
1974	$itk_component(yCutButton) select
1975
1976	itk_component add yCutScale {
1977	::scale $inner.yval -from 100 -to 0 \
1978	-width 10 -orient vertical -showvalue yes \
1979	-borderwidth 1 -highlightthickness 0 \
1980	-command [itcl::code $this EventuallySetCutplane y] \
1981	-variable [itcl::scope _settings(cutplaneYPosition)] \
1982	-foreground green3 -font "Arial 9 bold"
1983	} {
1984	usual
1985	ignore -borderwidth -highlightthickness -foreground -font
1986	}
1987	Rappture::Tooltip::for $itk_component(yCutScale) \
1988	"@[itcl::code $this Slice tooltip y]"
1989	# Set the default cutplane value before disabling the scale.
1990	$itk_component(yCutScale) set 50
1991	$itk_component(yCutScale) configure -state disabled
1992
1993	# Z-value slicer...
1994	itk_component add zCutButton {
1995	Rappture::PushButton $inner.zbutton \
1996	-onimage [Rappture::icon z-cutplane-blue] \
1997	-offimage [Rappture::icon z-cutplane-blue] \
1998	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1999	-variable [itcl::scope _settings(cutplaneZVisible)]
2000	}
2001	Rappture::Tooltip::for $itk_component(zCutButton) \
2002	"Toggle the Z-axis cutplane on/off"
2003	$itk_component(zCutButton) select
2004
2005	itk_component add zCutScale {
2006	::scale $inner.zval -from 100 -to 0 \
2007	-width 10 -orient vertical -showvalue yes \
2008	-borderwidth 1 -highlightthickness 0 \
2009	-command [itcl::code $this EventuallySetCutplane z] \
2010	-variable [itcl::scope _settings(cutplaneZPosition)] \
2011	-foreground blue3 -font "Arial 9 bold"
2012	} {
2013	usual
2014	ignore -borderwidth -highlightthickness -foreground -font
2015	}
2016	$itk_component(zCutScale) set 50
2017	$itk_component(zCutScale) configure -state disabled
2018	Rappture::Tooltip::for $itk_component(zCutScale) \
2019	"@[itcl::code $this Slice tooltip z]"
2020
2021	blt::table $inner \
2022	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2023	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2024	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2025	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2026	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2027	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2028	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2029	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2030	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2031	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2032	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2033
2034	blt::table configure $inner r* c* -resize none
2035	blt::table configure $inner r7 c4 -resize expand
2036	}
2037
2038	#
2039	# camera --
2040	#
2041	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2042	switch -- $option {
2043	"show" {
2044	puts [array get _view]
2045	}
2046	"set" {
2047	set who [lindex $args 0]
2048	set x $_view($who)
2049	set code [catch { string is double $x } result]
2050	if { $code != 0 \|\| !$result } {
2051	return
2052	}
2053	switch -- $who {
2054	"ortho" {
2055	if {$_view(ortho)} {
2056	SendCmd "camera mode ortho"
2057	} else {
2058	SendCmd "camera mode persp"
2059	}
2060	}
2061	"xpan" - "ypan" {
2062	PanCamera
2063	}
2064	"qx" - "qy" - "qz" - "qw" {
2065	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2066	$_arcball quaternion $q
2067	EventuallyRotate $q
2068	}
2069	"zoom" {
2070	SendCmd "camera zoom $_view(zoom)"
2071	}
2072	}
2073	}
2074	}
2075	}
2076
2077	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2078	set bytes ""
2079	foreach dataobj [get] {
2080	foreach comp [$dataobj components] {
2081	set tag $dataobj-$comp
2082	set contents [$dataobj vtkdata $comp]
2083	append bytes "$contents\n"
2084	}
2085	}
2086	return [list .vtk $bytes]
2087	}
2088
2089	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2090	if { [image width $_image(download)] > 0 &&
2091	[image height $_image(download)] > 0 } {
2092	set bytes [$_image(download) data -format "jpeg -quality 100"]
2093	set bytes [Rappture::encoding::decode -as b64 $bytes]
2094	return [list .jpg $bytes]
2095	}
2096	return ""
2097	}
2098
2099	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2100	Rappture::Balloon $popup \
2101	-title "[Rappture::filexfer::label downloadWord] as..."
2102	set inner [$popup component inner]
2103	label $inner.summary -text "" -anchor w
2104	radiobutton $inner.vtk_button -text "VTK data file" \
2105	-variable [itcl::scope _downloadPopup(format)] \
2106	-font "Helvetica 9 " \
2107	-value vtk
2108	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2109	radiobutton $inner.image_button -text "Image File" \
2110	-variable [itcl::scope _downloadPopup(format)] \
2111	-value image
2112	Rappture::Tooltip::for $inner.image_button \
2113	"Save as digital image."
2114
2115	button $inner.ok -text "Save" \
2116	-highlightthickness 0 -pady 2 -padx 3 \
2117	-command $command \
2118	-compound left \
2119	-image [Rappture::icon download]
2120
2121	button $inner.cancel -text "Cancel" \
2122	-highlightthickness 0 -pady 2 -padx 3 \
2123	-command [list $popup deactivate] \
2124	-compound left \
2125	-image [Rappture::icon cancel]
2126
2127	blt::table $inner \
2128	0,0 $inner.summary -cspan 2 \
2129	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2130	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2131	4,1 $inner.cancel -width .9i -fill y \
2132	4,0 $inner.ok -padx 2 -width .9i -fill y
2133	blt::table configure $inner r3 -height 4
2134	blt::table configure $inner r4 -pady 4
2135	raise $inner.image_button
2136	$inner.vtk_button invoke
2137	return $inner
2138	}
2139
2140	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2141	# Parse style string.
2142	set tag $dataobj-$comp
2143	set style [$dataobj style $comp]
2144	array set settings {
2145	-color \#808080
2146	-edges 0
2147	-edgecolor black
2148	-linewidth 1.0
2149	-opacity 0.4
2150	-wireframe 0
2151	-lighting 1
2152	-seeds 1
2153	-seedcolor white
2154	-visible 1
2155	}
2156	if { $dataobj != $_first } {
2157	set settings(-opacity) 1
2158	}
2159	array set settings $style
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 $tag"
2166	SendCmd "$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	SetColormap $dataobj $comp
2178	}
2179
2180	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2181	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2182	return 0
2183	}
2184	return 1
2185	}
2186
2187	# ----------------------------------------------------------------------
2188	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2189	#
2190	# Invoked automatically whenever the "legend" command comes in from
2191	# the rendering server. Indicates that binary image data with the
2192	# specified <size> will follow.
2193	# ----------------------------------------------------------------------
2194	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2195	set _legendPending 0
2196	set _title $title
2197	regsub {\(mag\)} $title "" _title
2198	if { [IsConnected] } {
2199	set bytes [ReceiveBytes $size]
2200	if { ![info exists _image(legend)] } {
2201	set _image(legend) [image create photo]
2202	}
2203	$_image(legend) configure -data $bytes
2204	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2205	if { [catch {DrawLegend} errs] != 0 } {
2206	puts stderr errs=$errs
2207	}
2208	}
2209	}
2210
2211	#
2212	# DrawLegend --
2213	#
2214	# Draws the legend in it's own canvas which resides to the right
2215	# of the contour plot area.
2216	#
2217	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2218	set fname $_curFldName
2219	set c $itk_component(view)
2220	set w [winfo width $c]
2221	set h [winfo height $c]
2222	set font "Arial 8"
2223	set lineht [font metrics $font -linespace]
2224
2225	if { [info exists _fields($fname)] } {
2226	foreach { title units } $_fields($fname) break
2227	if { $units != "" } {
2228	set title [format "%s (%s)" $title $units]
2229	}
2230	} else {
2231	set title $fname
2232	}
2233	if { $_settings(legendVisible) } {
2234	set x [expr $w - 2]
2235	if { [$c find withtag "legend"] == "" } {
2236	set y 2
2237	$c create text $x $y \
2238	-anchor ne \
2239	-fill $itk_option(-plotforeground) -tags "title legend" \
2240	-font $font
2241	incr y $lineht
2242	$c create text $x $y \
2243	-anchor ne \
2244	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2245	-font $font
2246	incr y $lineht
2247	$c create image $x $y \
2248	-anchor ne \
2249	-image $_image(legend) -tags "colormap legend"
2250	$c create text $x [expr {$h-2}] \
2251	-anchor se \
2252	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2253	-font $font
2254	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2255	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2256	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2257	}
2258	$c bind title <ButtonPress> [itcl::code $this Combo post]
2259	$c bind title <Enter> [itcl::code $this Combo activate]
2260	$c bind title <Leave> [itcl::code $this Combo deactivate]
2261	# Reset the item coordinates according the current size of the plot.
2262	$c itemconfigure title -text $title
2263	if { [info exists _limits($_curFldName)] } {
2264	foreach {vmin vmax} $_limits($_curFldName) break
2265	$c itemconfigure vmin -text [format %g $vmin]
2266	$c itemconfigure vmax -text [format %g $vmax]
2267	}
2268	set y 2
2269	$c coords title $x $y
2270	incr y $lineht
2271	$c coords vmax $x $y
2272	incr y $lineht
2273	$c coords colormap $x $y
2274	$c coords vmin $x [expr {$h - 2}]
2275	}
2276	}
2277
2278	#
2279	# EnterLegend --
2280	#
2281	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2282	SetLegendTip $x $y
2283	}
2284
2285	#
2286	# MotionLegend --
2287	#
2288	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2289	Rappture::Tooltip::tooltip cancel
2290	set c $itk_component(view)
2291	SetLegendTip $x $y
2292	}
2293
2294	#
2295	# LeaveLegend --
2296	#
2297	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2298	Rappture::Tooltip::tooltip cancel
2299	.rappturetooltip configure -icon ""
2300	}
2301
2302	#
2303	# SetLegendTip --
2304	#
2305	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2306	set c $itk_component(view)
2307	set w [winfo width $c]
2308	set h [winfo height $c]
2309	set font "Arial 8"
2310	set lineht [font metrics $font -linespace]
2311
2312	set imgHeight [image height $_image(legend)]
2313	set coords [$c coords colormap]
2314	set imgX [expr $w - [image width $_image(legend)] - 2]
2315	set imgY [expr $y - 2 * ($lineht + 2)]
2316
2317	if { [info exists _fields($_title)] } {
2318	foreach { title units } $_fields($_title) break
2319	if { $units != "" } {
2320	set title [format "%s (%s)" $title $units]
2321	}
2322	} else {
2323	set title $_title
2324	}
2325	# Make a swatch of the selected color
2326	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2327	#puts stderr "out of range: $imgY"
2328	return
2329	}
2330	if { ![info exists _image(swatch)] } {
2331	set _image(swatch) [image create photo -width 24 -height 24]
2332	}
2333	set color [eval format "\#%02x%02x%02x" $pixel]
2334	$_image(swatch) put black -to 0 0 23 23
2335	$_image(swatch) put $color -to 1 1 22 22
2336	.rappturetooltip configure -icon $_image(swatch)
2337
2338	# Compute the value of the point
2339	if { [info exists _limits($_curFldName)] } {
2340	foreach {vmin vmax} $_limits($_curFldName) break
2341	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2342	set value [expr $t * ($vmax - $vmin) + $vmin]
2343	} else {
2344	set value 0.0
2345	}
2346	set tipx [expr $x + 15]
2347	set tipy [expr $y - 5]
2348	Rappture::Tooltip::text $c "$title $value"
2349	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2350	}
2351
2352	# ----------------------------------------------------------------------
2353	# USAGE: Slice move x\|y\|z <newval>
2354	#
2355	# Called automatically when the user drags the slider to move the
2356	# cut plane that slices 3D data. Gets the current value from the
2357	# slider and moves the cut plane to the appropriate point in the
2358	# data set.
2359	# ----------------------------------------------------------------------
2360	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2361	switch -- $option {
2362	"move" {
2363	set axis [lindex $args 0]
2364	set oldval $_settings(axis-${axis}position)
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 [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
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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