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source: branches/1.3/gui/scripts/vtkstreamlinesviewer.tcl @ 4455

Last change on this file since 4455 was 4455, checked in by ldelgass, 10 years ago
Merge fix from r4454 from trunk
File size: 82.5 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	}
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	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
483	SendCmd "camera orient $q"
484	set _rotatePending 0
485	}
486
487	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
488	foreach dataset [CurrentDatasets -visible] {
489	foreach {dataobj comp} [split $dataset -] break
490	# This command works for either random or fmesh seeds
491	SendCmd "streamlines seed numpts $_numSeeds $dataset"
492	}
493	set _reseedPending 0
494	}
495
496	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
497	set _width $w
498	set _height $h
499	$_arcball resize $w $h
500	if { !$_resizePending } {
501	set _resizePending 1
502	$_dispatcher event -after 400 !resize
503	}
504	}
505
506	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
507	set _numSeeds $numPoints
508	if { !$_reseedPending } {
509	set _reseedPending 1
510	$_dispatcher event -after 600 !reseed
511	}
512	}
513
514	set rotate_delay 100
515
516	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
517	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
518	if { !$_rotatePending } {
519	set _rotatePending 1
520	global rotate_delay
521	$_dispatcher event -after $rotate_delay !rotate
522	}
523	}
524
525	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
526	if { !$_cutplanePending } {
527	set _cutplanePending 1
528	$_dispatcher event -after 100 !${axis}cutplane
529	}
530	}
531
532	# ----------------------------------------------------------------------
533	# USAGE: add <dataobj> ?<settings>?
534	#
535	# Clients use this to add a data object to the plot. The optional
536	# <settings> are used to configure the plot. Allowed settings are
537	# -color, -brightness, -width, -linestyle, and -raise.
538	# ----------------------------------------------------------------------
539	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
540	array set params {
541	-color auto
542	-width 1
543	-linestyle solid
544	-brightness 0
545	-raise 0
546	-description ""
547	-param ""
548	-type ""
549	}
550	array set params $settings
551	set params(-description) ""
552	set params(-param) ""
553	array set params $settings
554
555	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
556	# can't handle -autocolors yet
557	set params(-color) black
558	}
559	set pos [lsearch -exact $_dlist $dataobj]
560	if {$pos < 0} {
561	lappend _dlist $dataobj
562	}
563	set _obj2ovride($dataobj-color) $params(-color)
564	set _obj2ovride($dataobj-width) $params(-width)
565	set _obj2ovride($dataobj-raise) $params(-raise)
566	$_dispatcher event -idle !rebuild
567	}
568
569
570	# ----------------------------------------------------------------------
571	# USAGE: delete ?<dataobj1> <dataobj2> ...?
572	#
573	# Clients use this to delete a dataobj from the plot. If no dataobjs
574	# are specified, then all dataobjs are deleted. No data objects are
575	# deleted. They are only removed from the display list.
576	#
577	# ----------------------------------------------------------------------
578	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
579	if { [llength $args] == 0} {
580	set args $_dlist
581	}
582	# Delete all specified dataobjs
583	set changed 0
584	foreach dataobj $args {
585	set pos [lsearch -exact $_dlist $dataobj]
586	if { $pos < 0 } {
587	continue; # Don't know anything about it.
588	}
589	# Remove it from the dataobj list.
590	set _dlist [lreplace $_dlist $pos $pos]
591	array unset _obj2ovride $dataobj-*
592	array unset _settings $dataobj-*
593	set changed 1
594	}
595	# If anything changed, then rebuild the plot
596	if { $changed } {
597	$_dispatcher event -idle !rebuild
598	}
599	}
600
601	# ----------------------------------------------------------------------
602	# USAGE: get ?-objects?
603	# USAGE: get ?-visible?
604	# USAGE: get ?-image view?
605	#
606	# Clients use this to query the list of objects being plotted, in
607	# order from bottom to top of this result. The optional "-image"
608	# flag can also request the internal images being shown.
609	# ----------------------------------------------------------------------
610	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
611	if {[llength $args] == 0} {
612	set args "-objects"
613	}
614
615	set op [lindex $args 0]
616	switch -- $op {
617	"-objects" {
618	# put the dataobj list in order according to -raise options
619	set dlist {}
620	foreach dataobj $_dlist {
621	if { ![IsValidObject $dataobj] } {
622	continue
623	}
624	if {[info exists _obj2ovride($dataobj-raise)] &&
625	$_obj2ovride($dataobj-raise)} {
626	set dlist [linsert $dlist 0 $dataobj]
627	} else {
628	lappend dlist $dataobj
629	}
630	}
631	return $dlist
632	}
633	"-visible" {
634	set dlist {}
635	foreach dataobj $_dlist {
636	if { ![IsValidObject $dataobj] } {
637	continue
638	}
639	if { ![info exists _obj2ovride($dataobj-raise)] } {
640	# No setting indicates that the object isn't visible.
641	continue
642	}
643	# Otherwise use the -raise parameter to put the object to
644	# the front of the list.
645	if { $_obj2ovride($dataobj-raise) } {
646	set dlist [linsert $dlist 0 $dataobj]
647	} else {
648	lappend dlist $dataobj
649	}
650	}
651	return $dlist
652	}
653	-image {
654	if {[llength $args] != 2} {
655	error "wrong # args: should be \"get -image view\""
656	}
657	switch -- [lindex $args end] {
658	view {
659	return $_image(plot)
660	}
661	default {
662	error "bad image name \"[lindex $args end]\": should be view"
663	}
664	}
665	}
666	default {
667	error "bad option \"$op\": should be -objects or -image"
668	}
669	}
670	}
671
672	# ----------------------------------------------------------------------
673	# USAGE: scale ?<data1> <data2> ...?
674	#
675	# Sets the default limits for the overall plot according to the
676	# limits of the data for all of the given <data> objects. This
677	# accounts for all objects--even those not showing on the screen.
678	# Because of this, the limits are appropriate for all objects as
679	# the user scans through data in the ResultSet viewer.
680	# ----------------------------------------------------------------------
681	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
682	foreach dataobj $args {
683	foreach axis { x y z } {
684	set lim [$dataobj limits $axis]
685	if { ![info exists _limits($axis)] } {
686	set _limits($axis) $lim
687	continue
688	}
689	foreach {min max} $lim break
690	foreach {amin amax} $_limits($axis) break
691	if { $amin > $min } {
692	set amin $min
693	}
694	if { $amax < $max } {
695	set amax $max
696	}
697	set _limits($axis) [list $amin $amax]
698	}
699	foreach { fname lim } [$dataobj fieldlimits] {
700	if { ![info exists _limits($fname)] } {
701	set _limits($fname) $lim
702	continue
703	}
704	foreach {min max} $lim break
705	foreach {fmin fmax} $_limits($fname) break
706	if { $fmin > $min } {
707	set fmin $min
708	}
709	if { $fmax < $max } {
710	set fmax $max
711	}
712	set _limits($fname) [list $fmin $fmax]
713	}
714	}
715	}
716
717	# ----------------------------------------------------------------------
718	# USAGE: download coming
719	# USAGE: download controls <downloadCommand>
720	# USAGE: download now
721	#
722	# Clients use this method to create a downloadable representation
723	# of the plot. Returns a list of the form {ext string}, where
724	# "ext" is the file extension (indicating the type of data) and
725	# "string" is the data itself.
726	# ----------------------------------------------------------------------
727	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
728	switch $option {
729	coming {
730	if {[catch {
731	blt::winop snap $itk_component(plotarea) $_image(download)
732	}]} {
733	$_image(download) configure -width 1 -height 1
734	$_image(download) put #000000
735	}
736	}
737	controls {
738	set popup .vtkviewerdownload
739	if { ![winfo exists .vtkviewerdownload] } {
740	set inner [BuildDownloadPopup $popup [lindex $args 0]]
741	} else {
742	set inner [$popup component inner]
743	}
744	set _downloadPopup(image_controls) $inner.image_frame
745	set num [llength [get]]
746	set num [expr {($num == 1) ? "1 result" : "$num results"}]
747	set word [Rappture::filexfer::label downloadWord]
748	$inner.summary configure -text "$word $num in the following format:"
749	update idletasks ;# Fix initial sizes
750	return $popup
751	}
752	now {
753	set popup .vtkviewerdownload
754	if {[winfo exists .vtkviewerdownload]} {
755	$popup deactivate
756	}
757	switch -- $_downloadPopup(format) {
758	"image" {
759	return [$this GetImage [lindex $args 0]]
760	}
761	"vtk" {
762	return [$this GetVtkData [lindex $args 0]]
763	}
764	}
765	return ""
766	}
767	default {
768	error "bad option \"$option\": should be coming, controls, now"
769	}
770	}
771	}
772
773	# ----------------------------------------------------------------------
774	# USAGE: Connect ?<host:port>,<host:port>...?
775	#
776	# Clients use this method to establish a connection to a new
777	# server, or to reestablish a connection to the previous server.
778	# Any existing connection is automatically closed.
779	# ----------------------------------------------------------------------
780	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
781	set _hosts [GetServerList "vtkvis"]
782	if { "" == $_hosts } {
783	return 0
784	}
785	set result [VisViewer::Connect $_hosts]
786	if { $result } {
787	if { $_reportClientInfo } {
788	# Tell the server the viewer, hub, user and session.
789	# Do this immediately on connect before buffering any commands
790	global env
791
792	set info {}
793	set user "???"
794	if { [info exists env(USER)] } {
795	set user $env(USER)
796	}
797	set session "???"
798	if { [info exists env(SESSION)] } {
799	set session $env(SESSION)
800	}
801	lappend info "hub" [exec hostname]
802	lappend info "client" "vtkstreamlinesviewer"
803	lappend info "user" $user
804	lappend info "session" $session
805	SendCmd "clientinfo [list $info]"
806	}
807
808	set w [winfo width $itk_component(view)]
809	set h [winfo height $itk_component(view)]
810	EventuallyResize $w $h
811	}
812	return $result
813	}
814
815	#
816	# isconnected --
817	#
818	# Indicates if we are currently connected to the visualization server.
819	#
820	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
821	return [VisViewer::IsConnected]
822	}
823
824	#
825	# disconnect --
826	#
827	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
828	Disconnect
829	set _reset 1
830	}
831
832	#
833	# Disconnect --
834	#
835	# Clients use this method to disconnect from the current rendering
836	# server.
837	#
838	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
839	VisViewer::Disconnect
840
841	$_dispatcher cancel !rebuild
842	$_dispatcher cancel !resize
843	$_dispatcher cancel !reseed
844	$_dispatcher cancel !rotate
845	$_dispatcher cancel !xcutplane
846	$_dispatcher cancel !ycutplane
847	$_dispatcher cancel !zcutplane
848	$_dispatcher cancel !legend
849	# disconnected -- no more data sitting on server
850	array unset _datasets
851	array unset _data
852	array unset _colormaps
853	array unset _seeds
854	array unset _dataset2style
855	array unset _obj2datasets
856	}
857
858	# ----------------------------------------------------------------------
859	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
860	#
861	# Invoked automatically whenever the "image" command comes in from
862	# the rendering server. Indicates that binary image data with the
863	# specified <size> will follow.
864	# ----------------------------------------------------------------------
865	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
866	array set info {
867	-token "???"
868	-bytes 0
869	-type image
870	}
871	array set info $args
872	set bytes [ReceiveBytes $info(-bytes)]
873	if { $info(-type) == "image" } {
874	if 0 {
875	set f [open "last.ppm" "w"]
876	puts $f $bytes
877	close $f
878	}
879	$_image(plot) configure -data $bytes
880	set time [clock seconds]
881	set date [clock format $time]
882	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
883	if { $_start > 0 } {
884	set finish [clock clicks -milliseconds]
885	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
886	set _start 0
887	}
888	} elseif { $info(type) == "print" } {
889	set tag $this-print-$info(-token)
890	set _hardcopy($tag) $bytes
891	}
892	if { $_legendPending } {
893	RequestLegend
894	}
895	}
896
897	#
898	# ReceiveDataset --
899	#
900	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
901	if { ![isconnected] } {
902	return
903	}
904	set option [lindex $args 0]
905	switch -- $option {
906	"scalar" {
907	set option [lindex $args 1]
908	switch -- $option {
909	"world" {
910	foreach { x y z value tag } [lrange $args 2 end] break
911	}
912	"pixel" {
913	foreach { x y value tag } [lrange $args 2 end] break
914	}
915	}
916	}
917	"vector" {
918	set option [lindex $args 1]
919	switch -- $option {
920	"world" {
921	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
922	}
923	"pixel" {
924	foreach { x y vx vy vz tag } [lrange $args 2 end] break
925	}
926	}
927	}
928	"names" {
929	foreach { name } [lindex $args 1] {
930	#puts stderr "Dataset: $name"
931	}
932	}
933	default {
934	error "unknown dataset option \"$option\" from server"
935	}
936	}
937	}
938
939	# ----------------------------------------------------------------------
940	# USAGE: Rebuild
941	#
942	# Called automatically whenever something changes that affects the
943	# data in the widget. Clears any existing data and rebuilds the
944	# widget to display new data.
945	# ----------------------------------------------------------------------
946	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
947	update
948	set w [winfo width $itk_component(view)]
949	set h [winfo height $itk_component(view)]
950	if { $w < 2 \|\| $h < 2 } {
951	$_dispatcher event -idle !rebuild
952	return
953	}
954
955	# Turn on buffering of commands to the server. We don't want to
956	# be preempted by a server disconnect/reconnect (which automatically
957	# generates a new call to Rebuild).
958	StartBufferingCommands
959	set _legendPending 1
960
961	set _first ""
962	if { $_reset } {
963	set _width $w
964	set _height $h
965	$_arcball resize $w $h
966	DoResize
967	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
968	axesVisible axisLabelsVisible
969	# This "imgflush" is to force an image returned before vtkvis starts
970	# reading a (big) dataset. This will display an empty plot with axes
971	# at the correct image size.
972	SendCmd "imgflush"
973	}
974
975	set _first ""
976	SendCmd "dataset visible 0"
977	foreach dataobj [get -objects] {
978	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
979	set _first $dataobj
980	}
981	set _obj2datasets($dataobj) ""
982	foreach comp [$dataobj components] {
983	set tag $dataobj-$comp
984	if { ![info exists _datasets($tag)] } {
985	set bytes [$dataobj vtkdata $comp]
986	set length [string length $bytes]
987	if 0 {
988	set f [open /tmp/vtkstreamlines.vtk "w"]
989	fconfigure $f -translation binary -encoding binary
990	puts $f $bytes
991	close $f
992	}
993	if { $_reportClientInfo } {
994	set info {}
995	lappend info "tool_id" [$dataobj hints toolId]
996	lappend info "tool_name" [$dataobj hints toolName]
997	lappend info "tool_version" [$dataobj hints toolRevision]
998	lappend info "tool_title" [$dataobj hints toolTitle]
999	lappend info "dataset_label" [$dataobj hints label]
1000	lappend info "dataset_size" $length
1001	lappend info "dataset_tag" $tag
1002	SendCmd "clientinfo [list $info]"
1003	}
1004	SendCmd "dataset add $tag data follows $length"
1005	append _outbuf $bytes
1006	set _datasets($tag) 1
1007	SetObjectStyle $dataobj $comp
1008	}
1009	lappend _obj2datasets($dataobj) $tag
1010	if { [info exists _obj2ovride($dataobj-raise)] } {
1011	SendCmd "dataset visible 1 $tag"
1012	}
1013	}
1014	}
1015	if {"" != $_first} {
1016	set location [$_first hints camera]
1017	if { $location != "" } {
1018	array set view $location
1019	}
1020	foreach axis { x y z } {
1021	set label [$_first hints ${axis}label]
1022	if { $label != "" } {
1023	SendCmd "axis name $axis $label"
1024	}
1025	set units [$_first hints ${axis}units]
1026	if { $units != "" } {
1027	SendCmd "axis units $axis $units"
1028	}
1029	}
1030	$itk_component(field) choices delete 0 end
1031	$itk_component(fieldmenu) delete 0 end
1032	array unset _fields
1033	set _curFldName ""
1034	foreach cname [$_first components] {
1035	foreach fname [$_first fieldnames $cname] {
1036	if { [info exists _fields($fname)] } {
1037	continue
1038	}
1039	foreach { label units components } \
1040	[$_first fieldinfo $fname] break
1041	$itk_component(field) choices insert end "$fname" "$label"
1042	$itk_component(fieldmenu) add radiobutton -label "$label" \
1043	-value $label -variable [itcl::scope _curFldLabel] \
1044	-selectcolor red \
1045	-activebackground $itk_option(-plotbackground) \
1046	-activeforeground $itk_option(-plotforeground) \
1047	-font "Arial 8" \
1048	-command [itcl::code $this Combo invoke]
1049	set _fields($fname) [list $label $units $components]
1050	if { $_curFldName == "" } {
1051	set _curFldName $fname
1052	set _curFldLabel $label
1053	}
1054	}
1055	}
1056	$itk_component(field) value $_curFldLabel
1057	}
1058
1059	if { $_reset } {
1060	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1061	streamlinesVisible streamlinesColormap \
1062	streamlinesLighting \
1063	streamlinesColormap field \
1064	volumeVisible volumeEdges volumeLighting volumeOpacity \
1065	volumeWireframe \
1066	cutplaneVisible \
1067	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1068	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1069
1070	# Reset the camera and other view parameters
1071	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1072	$_arcball quaternion $q
1073	if {$_view(ortho)} {
1074	SendCmd "camera mode ortho"
1075	} else {
1076	SendCmd "camera mode persp"
1077	}
1078	DoRotate
1079	PanCamera
1080	Zoom reset
1081	SendCmd "camera reset"
1082	set _reset 0
1083	}
1084	# Actually write the commands to the server socket. If it fails, we don't
1085	# care. We're finished here.
1086	blt::busy hold $itk_component(hull)
1087	StopBufferingCommands
1088	blt::busy release $itk_component(hull)
1089	}
1090
1091	# ----------------------------------------------------------------------
1092	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1093	#
1094	# Returns a list of server IDs for the current datasets being displayed. This
1095	# is normally a single ID, but it might be a list of IDs if the current data
1096	# object has multiple components.
1097	# ----------------------------------------------------------------------
1098	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1099	set flag [lindex $args 0]
1100	switch -- $flag {
1101	"-all" {
1102	if { [llength $args] > 1 } {
1103	error "CurrentDatasets: can't specify dataobj after \"-all\""
1104	}
1105	set dlist [get -objects]
1106	}
1107	"-visible" {
1108	if { [llength $args] > 1 } {
1109	set dlist {}
1110	set args [lrange $args 1 end]
1111	foreach dataobj $args {
1112	if { [info exists _obj2ovride($dataobj-raise)] } {
1113	lappend dlist $dataobj
1114	}
1115	}
1116	} else {
1117	set dlist [get -visible]
1118	}
1119	}
1120	default {
1121	set dlist $args
1122	}
1123	}
1124	set rlist ""
1125	foreach dataobj $dlist {
1126	foreach comp [$dataobj components] {
1127	set tag $dataobj-$comp
1128	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1129	lappend rlist $tag
1130	}
1131	}
1132	}
1133	return $rlist
1134	}
1135
1136	# ----------------------------------------------------------------------
1137	# USAGE: Zoom in
1138	# USAGE: Zoom out
1139	# USAGE: Zoom reset
1140	#
1141	# Called automatically when the user clicks on one of the zoom
1142	# controls for this widget. Changes the zoom for the current view.
1143	# ----------------------------------------------------------------------
1144	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1145	switch -- $option {
1146	"in" {
1147	set _view(zoom) [expr {$_view(zoom)*1.25}]
1148	SendCmd "camera zoom $_view(zoom)"
1149	}
1150	"out" {
1151	set _view(zoom) [expr {$_view(zoom)*0.8}]
1152	SendCmd "camera zoom $_view(zoom)"
1153	}
1154	"reset" {
1155	array set _view {
1156	qw 0.853553
1157	qx -0.353553
1158	qy 0.353553
1159	qz 0.146447
1160	zoom 1.0
1161	xpan 0
1162	ypan 0
1163	}
1164	if { $_first != "" } {
1165	set location [$_first hints camera]
1166	if { $location != "" } {
1167	array set _view $location
1168	}
1169	}
1170	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1171	$_arcball quaternion $q
1172	DoRotate
1173	SendCmd "camera reset"
1174	}
1175	}
1176	}
1177
1178	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1179	set x $_view(xpan)
1180	set y $_view(ypan)
1181	SendCmd "camera pan $x $y"
1182	}
1183
1184
1185	# ----------------------------------------------------------------------
1186	# USAGE: Rotate click <x> <y>
1187	# USAGE: Rotate drag <x> <y>
1188	# USAGE: Rotate release <x> <y>
1189	#
1190	# Called automatically when the user clicks/drags/releases in the
1191	# plot area. Moves the plot according to the user's actions.
1192	# ----------------------------------------------------------------------
1193	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1194	switch -- $option {
1195	"click" {
1196	$itk_component(view) configure -cursor fleur
1197	set _click(x) $x
1198	set _click(y) $y
1199	}
1200	"drag" {
1201	if {[array size _click] == 0} {
1202	Rotate click $x $y
1203	} else {
1204	set w [winfo width $itk_component(view)]
1205	set h [winfo height $itk_component(view)]
1206	if {$w <= 0 \|\| $h <= 0} {
1207	return
1208	}
1209
1210	if {[catch {
1211	# this fails sometimes for no apparent reason
1212	set dx [expr {double($x-$_click(x))/$w}]
1213	set dy [expr {double($y-$_click(y))/$h}]
1214	}]} {
1215	return
1216	}
1217	if { $dx == 0 && $dy == 0 } {
1218	return
1219	}
1220	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1221	EventuallyRotate $q
1222	set _click(x) $x
1223	set _click(y) $y
1224	}
1225	}
1226	"release" {
1227	Rotate drag $x $y
1228	$itk_component(view) configure -cursor ""
1229	catch {unset _click}
1230	}
1231	default {
1232	error "bad option \"$option\": should be click, drag, release"
1233	}
1234	}
1235	}
1236
1237	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1238	foreach tag [CurrentDatasets -visible] {
1239	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1240	}
1241	}
1242
1243	# ----------------------------------------------------------------------
1244	# USAGE: $this Pan click x y
1245	# $this Pan drag x y
1246	# $this Pan release x y
1247	#
1248	# Called automatically when the user clicks on one of the zoom
1249	# controls for this widget. Changes the zoom for the current view.
1250	# ----------------------------------------------------------------------
1251	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1252	switch -- $option {
1253	"set" {
1254	set w [winfo width $itk_component(view)]
1255	set h [winfo height $itk_component(view)]
1256	set x [expr $x / double($w)]
1257	set y [expr $y / double($h)]
1258	set _view(xpan) [expr $_view(xpan) + $x]
1259	set _view(ypan) [expr $_view(ypan) + $y]
1260	PanCamera
1261	return
1262	}
1263	"click" {
1264	set _click(x) $x
1265	set _click(y) $y
1266	$itk_component(view) configure -cursor hand1
1267	}
1268	"drag" {
1269	if { ![info exists _click(x)] } {
1270	set _click(x) $x
1271	}
1272	if { ![info exists _click(y)] } {
1273	set _click(y) $y
1274	}
1275	set w [winfo width $itk_component(view)]
1276	set h [winfo height $itk_component(view)]
1277	set dx [expr ($_click(x) - $x)/double($w)]
1278	set dy [expr ($_click(y) - $y)/double($h)]
1279	set _click(x) $x
1280	set _click(y) $y
1281	set _view(xpan) [expr $_view(xpan) - $dx]
1282	set _view(ypan) [expr $_view(ypan) - $dy]
1283	PanCamera
1284	}
1285	"release" {
1286	Pan drag $x $y
1287	$itk_component(view) configure -cursor ""
1288	}
1289	default {
1290	error "unknown option \"$option\": should set, click, drag, or release"
1291	}
1292	}
1293	}
1294
1295	# ----------------------------------------------------------------------
1296	# USAGE: InitSettings <what> ?<value>?
1297	#
1298	# Used internally to update rendering settings whenever parameters
1299	# change in the popup settings panel. Sends the new settings off
1300	# to the back end.
1301	# ----------------------------------------------------------------------
1302	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1303	foreach spec $args {
1304	if { [info exists _settings($_first-$spec)] } {
1305	# Reset global setting with dataobj specific setting
1306	set _settings($spec) $_settings($_first-$spec)
1307	}
1308	AdjustSetting $spec
1309	}
1310	}
1311
1312	#
1313	# AdjustSetting --
1314	#
1315	# Changes/updates a specific setting in the widget. There are
1316	# usually user-setable option. Commands are sent to the render
1317	# server.
1318	#
1319	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1320	if { ![isconnected] } {
1321	return
1322	}
1323	switch -- $what {
1324	"volumeOpacity" {
1325	set val $_settings(volumeOpacity)
1326	set sval [expr { 0.01 * double($val) }]
1327	SendCmd "polydata opacity $sval"
1328	}
1329	"volumeWireframe" {
1330	set bool $_settings(volumeWireframe)
1331	SendCmd "polydata wireframe $bool"
1332	}
1333	"volumeVisible" {
1334	set bool $_settings(volumeVisible)
1335	SendCmd "polydata visible $bool"
1336	if { $bool } {
1337	Rappture::Tooltip::for $itk_component(volume) \
1338	"Hide the volume"
1339	} else {
1340	Rappture::Tooltip::for $itk_component(volume) \
1341	"Show the volume"
1342	}
1343	}
1344	"volumeLighting" {
1345	set bool $_settings(volumeLighting)
1346	SendCmd "polydata lighting $bool"
1347	}
1348	"volumeEdges" {
1349	set bool $_settings(volumeEdges)
1350	SendCmd "polydata edges $bool"
1351	}
1352	"axesVisible" {
1353	set bool $_settings(axesVisible)
1354	SendCmd "axis visible all $bool"
1355	}
1356	"axisLabelsVisible" {
1357	set bool $_settings(axisLabelsVisible)
1358	SendCmd "axis labels all $bool"
1359	}
1360	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1361	set axis [string tolower [string range $what 4 4]]
1362	set bool $_settings($what)
1363	SendCmd "axis grid $axis $bool"
1364	}
1365	"axis-mode" {
1366	set mode [$itk_component(axismode) value]
1367	set mode [$itk_component(axismode) translate $mode]
1368	set _settings($what) $mode
1369	SendCmd "axis flymode $mode"
1370	}
1371	"cutplaneEdges" {
1372	set bool $_settings($what)
1373	SendCmd "cutplane edges $bool"
1374	}
1375	"cutplaneVisible" {
1376	set bool $_settings($what)
1377	SendCmd "cutplane visible $bool"
1378	}
1379	"cutplaneWireframe" {
1380	set bool $_settings($what)
1381	SendCmd "cutplane wireframe $bool"
1382	}
1383	"cutplaneLighting" {
1384	set bool $_settings($what)
1385	SendCmd "cutplane lighting $bool"
1386	}
1387	"cutplaneOpacity" {
1388	set val $_settings($what)
1389	set sval [expr { 0.01 * double($val) }]
1390	SendCmd "cutplane opacity $sval"
1391	}
1392	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1393	set axis [string tolower [string range $what 8 8]]
1394	set bool $_settings($what)
1395	if { $bool } {
1396	$itk_component(${axis}CutScale) configure -state normal \
1397	-troughcolor white
1398	} else {
1399	$itk_component(${axis}CutScale) configure -state disabled \
1400	-troughcolor grey82
1401	}
1402	SendCmd "cutplane axis $axis $bool"
1403	}
1404	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1405	set axis [string tolower [string range $what 8 8]]
1406	set pos [expr $_settings($what) * 0.01]
1407	SendCmd "cutplane slice ${axis} ${pos}"
1408	set _cutplanePending 0
1409	}
1410	"streamlinesSeedsVisible" {
1411	set bool $_settings($what)
1412	SendCmd "streamlines seed visible $bool"
1413	}
1414	"streamlinesNumSeeds" {
1415	set density $_settings($what)
1416	EventuallyReseed $density
1417	}
1418	"streamlinesVisible" {
1419	set bool $_settings($what)
1420	SendCmd "streamlines visible $bool"
1421	if { $bool } {
1422	Rappture::Tooltip::for $itk_component(streamlines) \
1423	"Hide the streamlines"
1424	} else {
1425	Rappture::Tooltip::for $itk_component(streamlines) \
1426	"Show the streamlines"
1427	}
1428	}
1429	"streamlinesMode" {
1430	set mode [$itk_component(streammode) value]
1431	set _settings(streamlinesMode) $mode
1432	switch -- $mode {
1433	"lines" {
1434	SendCmd "streamlines lines"
1435	}
1436	"ribbons" {
1437	SendCmd "streamlines ribbons 3 0"
1438	}
1439	"tubes" {
1440	SendCmd "streamlines tubes 5 3"
1441	}
1442	}
1443	}
1444	"streamlinesColormap" {
1445	set colormap [$itk_component(colormap) value]
1446	set _settings(streamlinesColormap) $colormap
1447	foreach dataset [CurrentDatasets -visible $_first] {
1448	foreach {dataobj comp} [split $dataset -] break
1449	ChangeColormap $dataobj $comp $colormap
1450	}
1451	set _legendPending 1
1452	}
1453	"streamlinesOpacity" {
1454	set val $_settings(streamlinesOpacity)
1455	set sval [expr { 0.01 * double($val) }]
1456	SendCmd "streamlines opacity $sval"
1457	}
1458	"streamlinesScale" {
1459	set val $_settings(streamlinesScale)
1460	set sval [expr { 0.01 * double($val) }]
1461	SendCmd "streamlines scale $sval $sval $sval"
1462	}
1463	"streamlinesLighting" {
1464	set bool $_settings(streamlinesLighting)
1465	SendCmd "streamlines lighting $bool"
1466	}
1467	"field" {
1468	set label [$itk_component(field) value]
1469	set fname [$itk_component(field) translate $label]
1470	set _settings(field) $fname
1471	if { [info exists _fields($fname)] } {
1472	foreach { label units components } $_fields($fname) break
1473	if { $components > 1 } {
1474	set _colorMode vmag
1475	} else {
1476	set _colorMode scalar
1477	}
1478	set _curFldName $fname
1479	set _curFldLabel $label
1480	} else {
1481	puts stderr "unknown field \"$fname\""
1482	return
1483	}
1484	# Get the new limits because the field changed.
1485	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1486	SendCmd "streamlines colormode $_colorMode $_curFldName"
1487	SendCmd "cutplane colormode $_colorMode $_curFldName"
1488	DrawLegend
1489	}
1490	default {
1491	error "don't know how to fix $what"
1492	}
1493	}
1494	}
1495
1496	#
1497	# RequestLegend --
1498	#
1499	# Request a new legend from the server. The size of the legend
1500	# is determined from the height of the canvas. It will be rotated
1501	# to be vertical when drawn.
1502	#
1503	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1504	set font "Arial 8"
1505	set lineht [font metrics $font -linespace]
1506	set c $itk_component(legend)
1507	set w 12
1508	set h [expr {$_height - 3 * ($lineht + 2)}]
1509	if { $h < 1} {
1510	return
1511	}
1512	# Set the legend on the first streamlines dataset.
1513	foreach dataset [CurrentDatasets -visible $_first] {
1514	foreach {dataobj comp} [split $dataset -] break
1515	if { [info exists _dataset2style($dataset)] } {
1516	SendCmdNoWait \
1517	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1518	break;
1519	}
1520	}
1521	}
1522
1523	#
1524	# ChangeColormap --
1525	#
1526	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1527	set tag $dataobj-$comp
1528	if { ![info exist _style($tag)] } {
1529	error "no initial colormap"
1530	}
1531	array set style $_style($tag)
1532	set style(-color) $color
1533	set _style($tag) [array get style]
1534	SetColormap $dataobj $comp
1535	}
1536
1537	#
1538	# SetColormap --
1539	#
1540	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1541	array set style {
1542	-color BCGYR
1543	-levels 6
1544	-opacity 1.0
1545	}
1546	set tag $dataobj-$comp
1547	if { ![info exists _initialStyle($tag)] } {
1548	# Save the initial component style.
1549	set _initialStyle($tag) [$dataobj style $comp]
1550	}
1551
1552	# Override defaults with initial style defined in xml.
1553	array set style $_initialStyle($tag)
1554
1555	if { ![info exists _style($tag)] } {
1556	set _style($tag) [array get style]
1557	}
1558	# Override initial style with current style.
1559	array set style $_style($tag)
1560
1561	set name "$style(-color):$style(-levels):$style(-opacity)"
1562	if { ![info exists _colormaps($name)] } {
1563	BuildColormap $name [array get style]
1564	set _colormaps($name) 1
1565	}
1566	if { ![info exists _dataset2style($tag)] \|\|
1567	$_dataset2style($tag) != $name } {
1568	SendCmd "streamlines colormap $name $tag"
1569	SendCmd "cutplane colormap $name $tag"
1570	set _dataset2style($tag) $name
1571	}
1572	}
1573
1574
1575	#
1576	# BuildColormap --
1577	#
1578	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1579	array set style $styles
1580	set cmap [ColorsToColormap $style(-color)]
1581	if { [llength $cmap] == 0 } {
1582	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1583	}
1584	if { ![info exists _settings(volumeOpacity)] } {
1585	set _settings(volumeOpacity) $style(-opacity)
1586	}
1587	set max $_settings(volumeOpacity)
1588
1589	set wmap "0.0 1.0 1.0 1.0"
1590	SendCmd "colormap add $name { $cmap } { $wmap }"
1591	}
1592
1593	# ----------------------------------------------------------------------
1594	# CONFIGURATION OPTION: -plotbackground
1595	# ----------------------------------------------------------------------
1596	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1597	if { [isconnected] } {
1598	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1599	SendCmd "screen bgcolor $r $g $b"
1600	}
1601	}
1602
1603	# ----------------------------------------------------------------------
1604	# CONFIGURATION OPTION: -plotforeground
1605	# ----------------------------------------------------------------------
1606	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1607	if { [isconnected] } {
1608	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1609	#fix this!
1610	#SendCmd "color background $r $g $b"
1611	}
1612	}
1613
1614	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1615
1616	set fg [option get $itk_component(hull) font Font]
1617	#set bfg [option get $itk_component(hull) boldFont Font]
1618
1619	set inner [$itk_component(main) insert end \
1620	-title "Volume Settings" \
1621	-icon [Rappture::icon volume-on]]
1622	$inner configure -borderwidth 4
1623
1624	checkbutton $inner.volume \
1625	-text "Show Volume" \
1626	-variable [itcl::scope _settings(volumeVisible)] \
1627	-command [itcl::code $this AdjustSetting volumeVisible] \
1628	-font "Arial 9"
1629
1630	checkbutton $inner.wireframe \
1631	-text "Show Wireframe" \
1632	-variable [itcl::scope _settings(volumeWireframe)] \
1633	-command [itcl::code $this AdjustSetting volumeWireframe] \
1634	-font "Arial 9"
1635
1636	checkbutton $inner.lighting \
1637	-text "Enable Lighting" \
1638	-variable [itcl::scope _settings(volumeLighting)] \
1639	-command [itcl::code $this AdjustSetting volumeLighting] \
1640	-font "Arial 9"
1641
1642	checkbutton $inner.edges \
1643	-text "Show Edges" \
1644	-variable [itcl::scope _settings(volumeEdges)] \
1645	-command [itcl::code $this AdjustSetting volumeEdges] \
1646	-font "Arial 9"
1647
1648	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1649	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1650	-variable [itcl::scope _settings(volumeOpacity)] \
1651	-width 10 \
1652	-showvalue off \
1653	-command [itcl::code $this AdjustSetting volumeOpacity]
1654
1655	blt::table $inner \
1656	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1657	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1658	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1659	3,0 $inner.opacity_l -anchor w -pady 2 \
1660	3,1 $inner.opacity -fill x -pady 2
1661
1662	blt::table configure $inner r* c* -resize none
1663	blt::table configure $inner r4 c1 -resize expand
1664	}
1665
1666
1667	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1668
1669	set fg [option get $itk_component(hull) font Font]
1670	#set bfg [option get $itk_component(hull) boldFont Font]
1671
1672	set inner [$itk_component(main) insert end \
1673	-title "Streams Settings" \
1674	-icon [Rappture::icon streamlines-on]]
1675	$inner configure -borderwidth 4
1676
1677	checkbutton $inner.streamlines \
1678	-text "Show Streamlines" \
1679	-variable [itcl::scope _settings(streamlinesVisible)] \
1680	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1681	-font "Arial 9"
1682
1683	checkbutton $inner.lighting \
1684	-text "Enable Lighting" \
1685	-variable [itcl::scope _settings(streamlinesLighting)] \
1686	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1687	-font "Arial 9"
1688
1689	checkbutton $inner.seeds \
1690	-text "Show Seeds" \
1691	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1692	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1693	-font "Arial 9"
1694
1695	label $inner.mode_l -text "Mode" -font "Arial 9"
1696	itk_component add streammode {
1697	Rappture::Combobox $inner.mode -width 10 -editable no
1698	}
1699	$inner.mode choices insert end \
1700	"lines" "lines" \
1701	"ribbons" "ribbons" \
1702	"tubes" "tubes"
1703	$itk_component(streammode) value $_settings(streamlinesMode)
1704	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1705
1706	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1707	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1708	-variable [itcl::scope _settings(streamlinesOpacity)] \
1709	-width 10 \
1710	-showvalue off \
1711	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1712
1713	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1714	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1715	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1716	-width 10 \
1717	-showvalue on \
1718	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1719
1720	label $inner.scale_l -text "Scale" -font "Arial 9"
1721	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1722	-variable [itcl::scope _settings(streamlinesScale)] \
1723	-width 10 \
1724	-showvalue off \
1725	-command [itcl::code $this AdjustSetting streamlinesScale]
1726
1727	label $inner.field_l -text "Color by" -font "Arial 9"
1728	itk_component add field {
1729	Rappture::Combobox $inner.field -width 10 -editable no
1730	}
1731	bind $inner.field <<Value>> \
1732	[itcl::code $this AdjustSetting field]
1733
1734	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1735	itk_component add colormap {
1736	Rappture::Combobox $inner.colormap -width 10 -editable no
1737	}
1738
1739	$inner.colormap choices insert end [GetColormapList]
1740	$itk_component(colormap) value "BCGYR"
1741	bind $inner.colormap <<Value>> \
1742	[itcl::code $this AdjustSetting streamlinesColormap]
1743
1744	blt::table $inner \
1745	0,0 $inner.field_l -anchor w -pady 2 \
1746	0,1 $inner.field -fill x -pady 2 \
1747	1,0 $inner.colormap_l -anchor w -pady 2 \
1748	1,1 $inner.colormap -fill x -pady 2 \
1749	2,0 $inner.mode_l -anchor w -pady 2 \
1750	2,1 $inner.mode -fill x -pady 2 \
1751	3,0 $inner.opacity_l -anchor w -pady 2 \
1752	3,1 $inner.opacity -fill x -pady 2 \
1753	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1754	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1755	7,0 $inner.density_l -anchor w -pady 2 \
1756	7,1 $inner.density -fill x -pady 2 \
1757
1758	blt::table configure $inner r* c* -resize none
1759	blt::table configure $inner r10 c1 c2 -resize expand
1760	}
1761
1762	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1763
1764	set fg [option get $itk_component(hull) font Font]
1765	#set bfg [option get $itk_component(hull) boldFont Font]
1766
1767	set inner [$itk_component(main) insert end \
1768	-title "Axis Settings" \
1769	-icon [Rappture::icon axis1]]
1770	$inner configure -borderwidth 4
1771
1772	checkbutton $inner.visible \
1773	-text "Show Axes" \
1774	-variable [itcl::scope _settings(axesVisible)] \
1775	-command [itcl::code $this AdjustSetting axesVisible] \
1776	-font "Arial 9"
1777
1778	checkbutton $inner.labels \
1779	-text "Show Axis Labels" \
1780	-variable [itcl::scope _settings(axisLabelsVisible)] \
1781	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1782	-font "Arial 9"
1783
1784	checkbutton $inner.xgrid \
1785	-text "Show X Grid" \
1786	-variable [itcl::scope _settings(axisXGrid)] \
1787	-command [itcl::code $this AdjustSetting axisXGrid] \
1788	-font "Arial 9"
1789	checkbutton $inner.ygrid \
1790	-text "Show Y Grid" \
1791	-variable [itcl::scope _settings(axisYGrid)] \
1792	-command [itcl::code $this AdjustSetting axisYGrid] \
1793	-font "Arial 9"
1794	checkbutton $inner.zgrid \
1795	-text "Show Z Grid" \
1796	-variable [itcl::scope _settings(axisZGrid)] \
1797	-command [itcl::code $this AdjustSetting axisZGrid] \
1798	-font "Arial 9"
1799
1800	label $inner.mode_l -text "Mode" -font "Arial 9"
1801
1802	itk_component add axismode {
1803	Rappture::Combobox $inner.mode -width 10 -editable no
1804	}
1805	$inner.mode choices insert end \
1806	"static_triad" "static" \
1807	"closest_triad" "closest" \
1808	"furthest_triad" "furthest" \
1809	"outer_edges" "outer"
1810	$itk_component(axismode) value "static"
1811	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1812
1813	blt::table $inner \
1814	0,0 $inner.visible -anchor w -cspan 2 \
1815	1,0 $inner.labels -anchor w -cspan 2 \
1816	2,0 $inner.xgrid -anchor w -cspan 2 \
1817	3,0 $inner.ygrid -anchor w -cspan 2 \
1818	4,0 $inner.zgrid -anchor w -cspan 2 \
1819	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1820	6,0 $inner.mode -fill x -cspan 2
1821
1822	blt::table configure $inner r* c* -resize none
1823	blt::table configure $inner r7 c1 -resize expand
1824	}
1825
1826
1827	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1828	set inner [$itk_component(main) insert end \
1829	-title "Camera Settings" \
1830	-icon [Rappture::icon camera]]
1831	$inner configure -borderwidth 4
1832
1833	label $inner.view_l -text "view" -font "Arial 9"
1834	set f [frame $inner.view]
1835	foreach side { front back left right top bottom } {
1836	button $f.$side -image [Rappture::icon view$side] \
1837	-command [itcl::code $this SetOrientation $side]
1838	Rappture::Tooltip::for $f.$side "Change the view to $side"
1839	pack $f.$side -side left
1840	}
1841
1842	blt::table $inner \
1843	0,0 $inner.view_l -anchor e -pady 2 \
1844	0,1 $inner.view -anchor w -pady 2
1845
1846	set labels { qx qy qz qw xpan ypan zoom }
1847	set row 1
1848	foreach tag $labels {
1849	label $inner.${tag}label -text $tag -font "Arial 9"
1850	entry $inner.${tag} -font "Arial 9" -bg white \
1851	-textvariable [itcl::scope _view($tag)]
1852	bind $inner.${tag} <KeyPress-Return> \
1853	[itcl::code $this camera set ${tag}]
1854	blt::table $inner \
1855	$row,0 $inner.${tag}label -anchor e -pady 2 \
1856	$row,1 $inner.${tag} -anchor w -pady 2
1857	blt::table configure $inner r$row -resize none
1858	incr row
1859	}
1860	checkbutton $inner.ortho \
1861	-text "Orthographic Projection" \
1862	-variable [itcl::scope _view(ortho)] \
1863	-command [itcl::code $this camera set ortho] \
1864	-font "Arial 9"
1865	blt::table $inner \
1866	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1867	blt::table configure $inner r$row -resize none
1868	incr row
1869
1870	blt::table configure $inner c* r* -resize none
1871	blt::table configure $inner c2 -resize expand
1872	blt::table configure $inner r$row -resize expand
1873	}
1874
1875	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1876
1877	set fg [option get $itk_component(hull) font Font]
1878
1879	set inner [$itk_component(main) insert end \
1880	-title "Cutplane Settings" \
1881	-icon [Rappture::icon cutbutton]]
1882
1883	$inner configure -borderwidth 4
1884
1885	checkbutton $inner.visible \
1886	-text "Show Cutplanes" \
1887	-variable [itcl::scope _settings(cutplaneVisible)] \
1888	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1889	-font "Arial 9"
1890
1891	checkbutton $inner.wireframe \
1892	-text "Show Wireframe" \
1893	-variable [itcl::scope _settings(cutplaneWireframe)] \
1894	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1895	-font "Arial 9"
1896
1897	checkbutton $inner.lighting \
1898	-text "Enable Lighting" \
1899	-variable [itcl::scope _settings(cutplaneLighting)] \
1900	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1901	-font "Arial 9"
1902
1903	checkbutton $inner.edges \
1904	-text "Show Edges" \
1905	-variable [itcl::scope _settings(cutplaneEdges)] \
1906	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1907	-font "Arial 9"
1908
1909	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1910	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1911	-variable [itcl::scope _settings(cutplaneOpacity)] \
1912	-width 10 \
1913	-showvalue off \
1914	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1915	$inner.opacity set $_settings(cutplaneOpacity)
1916
1917	# X-value slicer...
1918	itk_component add xCutButton {
1919	Rappture::PushButton $inner.xbutton \
1920	-onimage [Rappture::icon x-cutplane-red] \
1921	-offimage [Rappture::icon x-cutplane-red] \
1922	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1923	-variable [itcl::scope _settings(cutplaneXVisible)]
1924	}
1925	Rappture::Tooltip::for $itk_component(xCutButton) \
1926	"Toggle the X-axis cutplane on/off"
1927	$itk_component(xCutButton) select
1928
1929	itk_component add xCutScale {
1930	::scale $inner.xval -from 100 -to 0 \
1931	-width 10 -orient vertical -showvalue yes \
1932	-borderwidth 1 -highlightthickness 0 \
1933	-command [itcl::code $this EventuallySetCutplane x] \
1934	-variable [itcl::scope _settings(cutplaneXPosition)] \
1935	-foreground red3 -font "Arial 9 bold"
1936	} {
1937	usual
1938	ignore -borderwidth -highlightthickness -foreground -font
1939	}
1940	# Set the default cutplane value before disabling the scale.
1941	$itk_component(xCutScale) set 50
1942	$itk_component(xCutScale) configure -state disabled
1943	Rappture::Tooltip::for $itk_component(xCutScale) \
1944	"@[itcl::code $this Slice tooltip x]"
1945
1946	# Y-value slicer...
1947	itk_component add yCutButton {
1948	Rappture::PushButton $inner.ybutton \
1949	-onimage [Rappture::icon y-cutplane-green] \
1950	-offimage [Rappture::icon y-cutplane-green] \
1951	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1952	-variable [itcl::scope _settings(cutplaneYVisible)]
1953	}
1954	Rappture::Tooltip::for $itk_component(yCutButton) \
1955	"Toggle the Y-axis cutplane on/off"
1956	$itk_component(yCutButton) select
1957
1958	itk_component add yCutScale {
1959	::scale $inner.yval -from 100 -to 0 \
1960	-width 10 -orient vertical -showvalue yes \
1961	-borderwidth 1 -highlightthickness 0 \
1962	-command [itcl::code $this EventuallySetCutplane y] \
1963	-variable [itcl::scope _settings(cutplaneYPosition)] \
1964	-foreground green3 -font "Arial 9 bold"
1965	} {
1966	usual
1967	ignore -borderwidth -highlightthickness -foreground -font
1968	}
1969	Rappture::Tooltip::for $itk_component(yCutScale) \
1970	"@[itcl::code $this Slice tooltip y]"
1971	# Set the default cutplane value before disabling the scale.
1972	$itk_component(yCutScale) set 50
1973	$itk_component(yCutScale) configure -state disabled
1974
1975	# Z-value slicer...
1976	itk_component add zCutButton {
1977	Rappture::PushButton $inner.zbutton \
1978	-onimage [Rappture::icon z-cutplane-blue] \
1979	-offimage [Rappture::icon z-cutplane-blue] \
1980	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1981	-variable [itcl::scope _settings(cutplaneZVisible)]
1982	}
1983	Rappture::Tooltip::for $itk_component(zCutButton) \
1984	"Toggle the Z-axis cutplane on/off"
1985	$itk_component(zCutButton) select
1986
1987	itk_component add zCutScale {
1988	::scale $inner.zval -from 100 -to 0 \
1989	-width 10 -orient vertical -showvalue yes \
1990	-borderwidth 1 -highlightthickness 0 \
1991	-command [itcl::code $this EventuallySetCutplane z] \
1992	-variable [itcl::scope _settings(cutplaneZPosition)] \
1993	-foreground blue3 -font "Arial 9 bold"
1994	} {
1995	usual
1996	ignore -borderwidth -highlightthickness -foreground -font
1997	}
1998	$itk_component(zCutScale) set 50
1999	$itk_component(zCutScale) configure -state disabled
2000	Rappture::Tooltip::for $itk_component(zCutScale) \
2001	"@[itcl::code $this Slice tooltip z]"
2002
2003	blt::table $inner \
2004	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2005	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2006	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2007	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2008	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2009	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2010	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2011	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2012	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2013	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2014	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2015
2016	blt::table configure $inner r* c* -resize none
2017	blt::table configure $inner r7 c4 -resize expand
2018	}
2019
2020	#
2021	# camera --
2022	#
2023	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2024	switch -- $option {
2025	"show" {
2026	puts [array get _view]
2027	}
2028	"set" {
2029	set who [lindex $args 0]
2030	set x $_view($who)
2031	set code [catch { string is double $x } result]
2032	if { $code != 0 \|\| !$result } {
2033	return
2034	}
2035	switch -- $who {
2036	"ortho" {
2037	if {$_view(ortho)} {
2038	SendCmd "camera mode ortho"
2039	} else {
2040	SendCmd "camera mode persp"
2041	}
2042	}
2043	"xpan" - "ypan" {
2044	PanCamera
2045	}
2046	"qx" - "qy" - "qz" - "qw" {
2047	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2048	$_arcball quaternion $q
2049	EventuallyRotate $q
2050	}
2051	"zoom" {
2052	SendCmd "camera zoom $_view(zoom)"
2053	}
2054	}
2055	}
2056	}
2057	}
2058
2059	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2060	set bytes ""
2061	foreach dataobj [get] {
2062	foreach comp [$dataobj components] {
2063	set tag $dataobj-$comp
2064	set contents [$dataobj vtkdata $comp]
2065	append bytes "$contents\n"
2066	}
2067	}
2068	return [list .vtk $bytes]
2069	}
2070
2071	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2072	if { [image width $_image(download)] > 0 &&
2073	[image height $_image(download)] > 0 } {
2074	set bytes [$_image(download) data -format "jpeg -quality 100"]
2075	set bytes [Rappture::encoding::decode -as b64 $bytes]
2076	return [list .jpg $bytes]
2077	}
2078	return ""
2079	}
2080
2081	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2082	Rappture::Balloon $popup \
2083	-title "[Rappture::filexfer::label downloadWord] as..."
2084	set inner [$popup component inner]
2085	label $inner.summary -text "" -anchor w
2086	radiobutton $inner.vtk_button -text "VTK data file" \
2087	-variable [itcl::scope _downloadPopup(format)] \
2088	-font "Helvetica 9 " \
2089	-value vtk
2090	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2091	radiobutton $inner.image_button -text "Image File" \
2092	-variable [itcl::scope _downloadPopup(format)] \
2093	-value image
2094	Rappture::Tooltip::for $inner.image_button \
2095	"Save as digital image."
2096
2097	button $inner.ok -text "Save" \
2098	-highlightthickness 0 -pady 2 -padx 3 \
2099	-command $command \
2100	-compound left \
2101	-image [Rappture::icon download]
2102
2103	button $inner.cancel -text "Cancel" \
2104	-highlightthickness 0 -pady 2 -padx 3 \
2105	-command [list $popup deactivate] \
2106	-compound left \
2107	-image [Rappture::icon cancel]
2108
2109	blt::table $inner \
2110	0,0 $inner.summary -cspan 2 \
2111	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2112	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2113	4,1 $inner.cancel -width .9i -fill y \
2114	4,0 $inner.ok -padx 2 -width .9i -fill y
2115	blt::table configure $inner r3 -height 4
2116	blt::table configure $inner r4 -pady 4
2117	raise $inner.image_button
2118	$inner.vtk_button invoke
2119	return $inner
2120	}
2121
2122	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2123	# Parse style string.
2124	set tag $dataobj-$comp
2125	set style [$dataobj style $comp]
2126	array set settings {
2127	-color \#808080
2128	-edges 0
2129	-edgecolor black
2130	-linewidth 1.0
2131	-opacity 0.4
2132	-wireframe 0
2133	-lighting 1
2134	-seeds 1
2135	-seedcolor white
2136	-visible 1
2137	}
2138	if { $dataobj != $_first } {
2139	set settings(-opacity) 1
2140	}
2141	array set settings $style
2142	SendCmd "streamlines add $tag"
2143	SendCmd "streamlines seed visible off $tag"
2144	set seeds [$dataobj hints seeds]
2145	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2146	set length [string length $seeds]
2147	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2148	SendCmd "$seeds"
2149	set _seeds($dataobj) 1
2150	}
2151	SendCmd "cutplane add $tag"
2152	SendCmd "polydata add $tag"
2153	SendCmd "polydata colormode constant {} $tag"
2154	set _settings(volumeEdges) $settings(-edges)
2155	set _settings(volumeLighting) $settings(-lighting)
2156	set _settings(volumeOpacity) $settings(-opacity)
2157	set _settings(volumeWireframe) $settings(-wireframe)
2158	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2159	SetColormap $dataobj $comp
2160	}
2161
2162	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2163	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2164	return 0
2165	}
2166	return 1
2167	}
2168
2169	# ----------------------------------------------------------------------
2170	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2171	#
2172	# Invoked automatically whenever the "legend" command comes in from
2173	# the rendering server. Indicates that binary image data with the
2174	# specified <size> will follow.
2175	# ----------------------------------------------------------------------
2176	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2177	set _legendPending 0
2178	set _title $title
2179	regsub {\(mag\)} $title "" _title
2180	if { [IsConnected] } {
2181	set bytes [ReceiveBytes $size]
2182	if { ![info exists _image(legend)] } {
2183	set _image(legend) [image create photo]
2184	}
2185	$_image(legend) configure -data $bytes
2186	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2187	if { [catch {DrawLegend} errs] != 0 } {
2188	puts stderr errs=$errs
2189	}
2190	}
2191	}
2192
2193	#
2194	# DrawLegend --
2195	#
2196	# Draws the legend in it's own canvas which resides to the right
2197	# of the contour plot area.
2198	#
2199	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2200	set fname $_curFldName
2201	set c $itk_component(view)
2202	set w [winfo width $c]
2203	set h [winfo height $c]
2204	set font "Arial 8"
2205	set lineht [font metrics $font -linespace]
2206
2207	if { [info exists _fields($fname)] } {
2208	foreach { title units } $_fields($fname) break
2209	if { $units != "" } {
2210	set title [format "%s (%s)" $title $units]
2211	}
2212	} else {
2213	set title $fname
2214	}
2215	if { $_settings(legendVisible) } {
2216	set x [expr $w - 2]
2217	if { [$c find withtag "legend"] == "" } {
2218	set y 2
2219	$c create text $x $y \
2220	-anchor ne \
2221	-fill $itk_option(-plotforeground) -tags "title legend" \
2222	-font $font
2223	incr y $lineht
2224	$c create text $x $y \
2225	-anchor ne \
2226	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2227	-font $font
2228	incr y $lineht
2229	$c create image $x $y \
2230	-anchor ne \
2231	-image $_image(legend) -tags "colormap legend"
2232	$c create text $x [expr {$h-2}] \
2233	-anchor se \
2234	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2235	-font $font
2236	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2237	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2238	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2239	}
2240	$c bind title <ButtonPress> [itcl::code $this Combo post]
2241	$c bind title <Enter> [itcl::code $this Combo activate]
2242	$c bind title <Leave> [itcl::code $this Combo deactivate]
2243	# Reset the item coordinates according the current size of the plot.
2244	$c itemconfigure title -text $title
2245	if { [info exists _limits($_curFldName)] } {
2246	foreach {vmin vmax} $_limits($_curFldName) break
2247	$c itemconfigure vmin -text [format %g $vmin]
2248	$c itemconfigure vmax -text [format %g $vmax]
2249	}
2250	set y 2
2251	$c coords title $x $y
2252	incr y $lineht
2253	$c coords vmax $x $y
2254	incr y $lineht
2255	$c coords colormap $x $y
2256	$c coords vmin $x [expr {$h - 2}]
2257	}
2258	}
2259
2260	#
2261	# EnterLegend --
2262	#
2263	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2264	SetLegendTip $x $y
2265	}
2266
2267	#
2268	# MotionLegend --
2269	#
2270	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2271	Rappture::Tooltip::tooltip cancel
2272	set c $itk_component(view)
2273	SetLegendTip $x $y
2274	}
2275
2276	#
2277	# LeaveLegend --
2278	#
2279	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2280	Rappture::Tooltip::tooltip cancel
2281	.rappturetooltip configure -icon ""
2282	}
2283
2284	#
2285	# SetLegendTip --
2286	#
2287	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2288	set c $itk_component(view)
2289	set w [winfo width $c]
2290	set h [winfo height $c]
2291	set font "Arial 8"
2292	set lineht [font metrics $font -linespace]
2293
2294	set imgHeight [image height $_image(legend)]
2295	set coords [$c coords colormap]
2296	set imgX [expr $w - [image width $_image(legend)] - 2]
2297	set imgY [expr $y - 2 * ($lineht + 2)]
2298
2299	if { [info exists _fields($_title)] } {
2300	foreach { title units } $_fields($_title) break
2301	if { $units != "" } {
2302	set title [format "%s (%s)" $title $units]
2303	}
2304	} else {
2305	set title $_title
2306	}
2307	# Make a swatch of the selected color
2308	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2309	#puts stderr "out of range: $imgY"
2310	return
2311	}
2312	if { ![info exists _image(swatch)] } {
2313	set _image(swatch) [image create photo -width 24 -height 24]
2314	}
2315	set color [eval format "\#%02x%02x%02x" $pixel]
2316	$_image(swatch) put black -to 0 0 23 23
2317	$_image(swatch) put $color -to 1 1 22 22
2318	.rappturetooltip configure -icon $_image(swatch)
2319
2320	# Compute the value of the point
2321	if { [info exists _limits($_curFldName)] } {
2322	foreach {vmin vmax} $_limits($_curFldName) break
2323	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2324	set value [expr $t * ($vmax - $vmin) + $vmin]
2325	} else {
2326	set value 0.0
2327	}
2328	set tipx [expr $x + 15]
2329	set tipy [expr $y - 5]
2330	Rappture::Tooltip::text $c "$title $value"
2331	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2332	}
2333
2334	# ----------------------------------------------------------------------
2335	# USAGE: Slice move x\|y\|z <newval>
2336	#
2337	# Called automatically when the user drags the slider to move the
2338	# cut plane that slices 3D data. Gets the current value from the
2339	# slider and moves the cut plane to the appropriate point in the
2340	# data set.
2341	# ----------------------------------------------------------------------
2342	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2343	switch -- $option {
2344	"move" {
2345	set axis [lindex $args 0]
2346	set oldval $_settings(axis-${axis}position)
2347	set newval [lindex $args 1]
2348	if {[llength $args] != 2} {
2349	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2350	}
2351	set newpos [expr {0.01*$newval}]
2352	SendCmd "cutplane slice $axis $newpos"
2353	}
2354	"tooltip" {
2355	set axis [lindex $args 0]
2356	set val [$itk_component(${axis}CutScale) get]
2357	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2358	}
2359	default {
2360	error "bad option \"$option\": should be axis, move, or tooltip"
2361	}
2362	}
2363	}
2364
2365	# ----------------------------------------------------------------------
2366	# USAGE: _dropdown post
2367	# USAGE: _dropdown unpost
2368	# USAGE: _dropdown select
2369	#
2370	# Used internally to handle the dropdown list for this combobox. The
2371	# post/unpost options are invoked when the list is posted or unposted
2372	# to manage the relief of the controlling button. The select option
2373	# is invoked whenever there is a selection from the list, to assign
2374	# the value back to the gauge.
2375	# ----------------------------------------------------------------------
2376	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2377	set c $itk_component(view)
2378	switch -- $option {
2379	post {
2380	foreach { x1 y1 x2 y2 } [$c bbox title] break
2381	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2382	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2383	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2384	tk_popup $itk_component(fieldmenu) $x $y
2385	}
2386	activate {
2387	$c itemconfigure title -fill red
2388	}
2389	deactivate {
2390	$c itemconfigure title -fill white
2391	}
2392	invoke {
2393	$itk_component(field) value $_curFldLabel
2394	AdjustSetting field
2395	}
2396	default {
2397	error "bad option \"$option\": should be post, unpost, select"
2398	}
2399	}
2400	}
2401
2402	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2403	array set positions {
2404	front "1 0 0 0"
2405	back "0 0 1 0"
2406	left "0.707107 0 -0.707107 0"
2407	right "0.707107 0 0.707107 0"
2408	top "0.707107 -0.707107 0 0"
2409	bottom "0.707107 0.707107 0 0"
2410	}
2411	foreach name { qw qx qy qz } value $positions($side) {
2412	set _view($name) $value
2413	}
2414	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2415	$_arcball quaternion $q
2416	SendCmd "camera orient $q"
2417	SendCmd "camera reset"
2418	set _view(xpan) 0
2419	set _view(ypan) 0
2420	set _view(zoom) 1.0
2421	}

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