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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 3555

Last change on this file since 3555 was 3555, checked in by gah, 12 years ago
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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 ConvertToVtkData { dataobj comp }
90	private method DrawLegend {}
91	private method Combo { option }
92	private method EnterLegend { x y }
93	private method EventuallyResize { w h }
94	private method EventuallyReseed { numPoints }
95	private method EventuallyRotate { q }
96	private method EventuallySetCutplane { axis args }
97	private method GetImage { args }
98	private method GetVtkData { args }
99	private method IsValidObject { dataobj }
100	private method LeaveLegend {}
101	private method MotionLegend { x y }
102	private method PanCamera {}
103	private method RequestLegend {}
104	private method SetColormap { dataobj comp }
105	private method ChangeColormap { dataobj comp color }
106	private method SetLegendTip { x y }
107	private method SetObjectStyle { dataobj comp }
108	private method Slice {option args}
109	private method SetOrientation { side }
110
111	private variable _arcball ""
112
113	private variable _dlist "" ; # list of data objects
114	private variable _obj2datasets
115	private variable _obj2ovride ; # maps dataobj => style override
116	private variable _datasets ; # contains all the dataobj-component
117	; # datasets in the server
118	private variable _colormaps ; # contains all the colormaps
119	; # in the server.
120	private variable _dataset2style ;# maps dataobj-component to transfunc
121
122	private variable _click ; # info used for rotate operations
123	private variable _limits ; # autoscale min/max for all axes
124	private variable _view ; # view params for 3D view
125	private variable _settings
126	private variable _style; # Array of current component styles.
127	private variable _initialStyle; # Array of initial component styles.
128	private variable _reset 1; # indicates if camera needs to be reset
129	# to starting position.
130
131	private variable _first "" ; # This is the topmost dataset.
132	private variable _start 0
133	private variable _title ""
134	private variable _seeds
135
136	common _downloadPopup; # download options from popup
137	private common _hardcopy
138	private variable _width 0
139	private variable _height 0
140	private variable _resizePending 0
141	private variable _reseedPending 0
142	private variable _rotatePending 0
143	private variable _cutplanePending 0
144	private variable _legendPending 0
145	private variable _outline
146	private variable _vectorFields
147	private variable _scalarFields
148	private variable _fields
149	private variable _curFldName ""
150	private variable _curFldLabel ""
151	private variable _field ""
152	private variable _numSeeds 200
153	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
154	}
155
156	itk::usual VtkStreamlinesViewer {
157	keep -background -foreground -cursor -font
158	keep -plotbackground -plotforeground
159	}
160
161	# ----------------------------------------------------------------------
162	# CONSTRUCTOR
163	# ----------------------------------------------------------------------
164	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
165	package require vtk
166	set _serverType "vtkvis"
167
168	EnableWaitDialog 2000
169
170	# Rebuild event
171	$_dispatcher register !rebuild
172	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
173
174	# Resize event
175	$_dispatcher register !resize
176	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
177
178	# Reseed event
179	$_dispatcher register !reseed
180	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
181
182	# Rotate event
183	$_dispatcher register !rotate
184	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
185
186	# Legend event
187	$_dispatcher register !legend
188	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
189
190	# X-Cutplane event
191	$_dispatcher register !xcutplane
192	$_dispatcher dispatch $this !xcutplane \
193	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
194
195	# Y-Cutplane event
196	$_dispatcher register !ycutplane
197	$_dispatcher dispatch $this !ycutplane \
198	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
199
200	# Z-Cutplane event
201	$_dispatcher register !zcutplane
202	$_dispatcher dispatch $this !zcutplane \
203	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
204
205	#
206	# Populate parser with commands handle incoming requests
207	#
208	$_parser alias image [itcl::code $this ReceiveImage]
209	$_parser alias dataset [itcl::code $this ReceiveDataset]
210	$_parser alias legend [itcl::code $this ReceiveLegend]
211
212	array set _outline {
213	id -1
214	afterId -1
215	x1 -1
216	y1 -1
217	x2 -1
218	y2 -1
219	}
220	# Initialize the view to some default parameters.
221	array set _view {
222	qw 0.853553
223	qx -0.353553
224	qy 0.353553
225	qz 0.146447
226	zoom 1.0
227	xpan 0
228	ypan 0
229	ortho 0
230	}
231	set _arcball [blt::arcball create 100 100]
232	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
233	$_arcball quaternion $q
234
235	array set _settings [subst {
236	axesVisible 1
237	axisLabelsVisible 1
238	axisXGrid 0
239	axisYGrid 0
240	axisZGrid 0
241	cutplaneEdges 0
242	cutplaneLighting 1
243	cutplaneOpacity 100
244	cutplaneVisible 0
245	cutplaneWireframe 0
246	cutplaneXPosition 50
247	cutplaneXVisible 1
248	cutplaneYPosition 50
249	cutplaneYVisible 1
250	cutplaneZPosition 50
251	cutplaneZVisible 1
252	legendVisible 1
253	streamlinesLighting 1
254	streamlinesMode lines
255	streamlinesNumSeeds 200
256	streamlinesOpacity 100
257	streamlinesScale 1
258	streamlinesSeedsVisible 0
259	streamlinesVisible 1
260	volumeEdges 0
261	volumeLighting 1
262	volumeOpacity 40
263	volumeVisible 1
264	volumeWireframe 0
265	}]
266
267	itk_component add view {
268	canvas $itk_component(plotarea).view \
269	-highlightthickness 0 -borderwidth 0
270	} {
271	usual
272	ignore -highlightthickness -borderwidth -background
273	}
274
275	itk_component add fieldmenu {
276	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
277	-tearoff no
278	} {
279	usual
280	ignore -background -foreground -relief -tearoff
281	}
282	set c $itk_component(view)
283	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
284	bind $c <4> [itcl::code $this Zoom in 0.25]
285	bind $c <5> [itcl::code $this Zoom out 0.25]
286	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
287	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
288	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
289	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
290	bind $c <Enter> "focus %W"
291	bind $c <Control-F1> [itcl::code $this ToggleConsole]
292
293	# Fix the scrollregion in case we go off screen
294	$c configure -scrollregion [$c bbox all]
295
296	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
297	set _map(cwidth) -1
298	set _map(cheight) -1
299	set _map(zoom) 1.0
300	set _map(original) ""
301
302	set f [$itk_component(main) component controls]
303	itk_component add reset {
304	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
305	-highlightthickness 0 \
306	-image [Rappture::icon reset-view] \
307	-command [itcl::code $this Zoom reset]
308	} {
309	usual
310	ignore -highlightthickness
311	}
312	pack $itk_component(reset) -side top -padx 2 -pady 2
313	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
314
315	itk_component add zoomin {
316	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
317	-highlightthickness 0 \
318	-image [Rappture::icon zoom-in] \
319	-command [itcl::code $this Zoom in]
320	} {
321	usual
322	ignore -highlightthickness
323	}
324	pack $itk_component(zoomin) -side top -padx 2 -pady 2
325	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
326
327	itk_component add zoomout {
328	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
329	-highlightthickness 0 \
330	-image [Rappture::icon zoom-out] \
331	-command [itcl::code $this Zoom out]
332	} {
333	usual
334	ignore -highlightthickness
335	}
336	pack $itk_component(zoomout) -side top -padx 2 -pady 2
337	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
338
339	itk_component add volume {
340	Rappture::PushButton $f.volume \
341	-onimage [Rappture::icon volume-on] \
342	-offimage [Rappture::icon volume-off] \
343	-variable [itcl::scope _settings(volumeVisible)] \
344	-command [itcl::code $this AdjustSetting volumeVisible]
345	}
346	$itk_component(volume) select
347	Rappture::Tooltip::for $itk_component(volume) \
348	"Don't display the volume"
349	pack $itk_component(volume) -padx 2 -pady 2
350
351	itk_component add streamlines {
352	Rappture::PushButton $f.streamlines \
353	-onimage [Rappture::icon streamlines-on] \
354	-offimage [Rappture::icon streamlines-off] \
355	-variable [itcl::scope _settings(streamlinesVisible)] \
356	-command [itcl::code $this AdjustSetting streamlinesVisible] \
357	}
358	$itk_component(streamlines) select
359	Rappture::Tooltip::for $itk_component(streamlines) \
360	"Toggle the streamlines on/off"
361	pack $itk_component(streamlines) -padx 2 -pady 2
362
363	itk_component add cutplane {
364	Rappture::PushButton $f.cutplane \
365	-onimage [Rappture::icon cutbutton] \
366	-offimage [Rappture::icon cutbutton] \
367	-variable [itcl::scope _settings(cutplaneVisible)] \
368	-command [itcl::code $this AdjustSetting cutplaneVisible]
369	}
370	Rappture::Tooltip::for $itk_component(cutplane) \
371	"Show/Hide cutplanes"
372	pack $itk_component(cutplane) -padx 2 -pady 2
373
374
375	if { [catch {
376	BuildVolumeTab
377	BuildStreamsTab
378	BuildCutplaneTab
379	BuildAxisTab
380	BuildCameraTab
381	} errs] != 0 } {
382	puts stderr errs=$errs
383	}
384	# Legend
385
386	set _image(legend) [image create photo]
387	itk_component add legend {
388	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
389	} {
390	usual
391	ignore -highlightthickness
392	rename -background -plotbackground plotBackground Background
393	}
394
395	# Hack around the Tk panewindow. The problem is that the requested
396	# size of the 3d view isn't set until an image is retrieved from
397	# the server. So the panewindow uses the tiny size.
398	set w 10000
399	pack forget $itk_component(view)
400	blt::table $itk_component(plotarea) \
401	0,0 $itk_component(view) -fill both -reqwidth $w
402	blt::table configure $itk_component(plotarea) c1 -resize none
403
404	# Bindings for rotation via mouse
405	bind $itk_component(view) <ButtonPress-1> \
406	[itcl::code $this Rotate click %x %y]
407	bind $itk_component(view) <B1-Motion> \
408	[itcl::code $this Rotate drag %x %y]
409	bind $itk_component(view) <ButtonRelease-1> \
410	[itcl::code $this Rotate release %x %y]
411	bind $itk_component(view) <Configure> \
412	[itcl::code $this EventuallyResize %w %h]
413
414	if 0 {
415	bind $itk_component(view) <Configure> \
416	[itcl::code $this EventuallyResize %w %h]
417	}
418	# Bindings for panning via mouse
419	bind $itk_component(view) <ButtonPress-2> \
420	[itcl::code $this Pan click %x %y]
421	bind $itk_component(view) <B2-Motion> \
422	[itcl::code $this Pan drag %x %y]
423	bind $itk_component(view) <ButtonRelease-2> \
424	[itcl::code $this Pan release %x %y]
425
426	#bind $itk_component(view) <ButtonRelease-3> \
427	# [itcl::code $this Pick %x %y]
428
429	# Bindings for panning via keyboard
430	bind $itk_component(view) <KeyPress-Left> \
431	[itcl::code $this Pan set -10 0]
432	bind $itk_component(view) <KeyPress-Right> \
433	[itcl::code $this Pan set 10 0]
434	bind $itk_component(view) <KeyPress-Up> \
435	[itcl::code $this Pan set 0 -10]
436	bind $itk_component(view) <KeyPress-Down> \
437	[itcl::code $this Pan set 0 10]
438	bind $itk_component(view) <Shift-KeyPress-Left> \
439	[itcl::code $this Pan set -2 0]
440	bind $itk_component(view) <Shift-KeyPress-Right> \
441	[itcl::code $this Pan set 2 0]
442	bind $itk_component(view) <Shift-KeyPress-Up> \
443	[itcl::code $this Pan set 0 -2]
444	bind $itk_component(view) <Shift-KeyPress-Down> \
445	[itcl::code $this Pan set 0 2]
446
447	# Bindings for zoom via keyboard
448	bind $itk_component(view) <KeyPress-Prior> \
449	[itcl::code $this Zoom out]
450	bind $itk_component(view) <KeyPress-Next> \
451	[itcl::code $this Zoom in]
452
453	bind $itk_component(view) <Enter> "focus $itk_component(view)"
454
455	if {[string equal "x11" [tk windowingsystem]]} {
456	# Bindings for zoom via mouse
457	bind $itk_component(view) <4> [itcl::code $this Zoom out]
458	bind $itk_component(view) <5> [itcl::code $this Zoom in]
459	}
460
461	set _image(download) [image create photo]
462
463	eval itk_initialize $args
464	Connect
465	update
466	}
467
468	# ----------------------------------------------------------------------
469	# DESTRUCTOR
470	# ----------------------------------------------------------------------
471	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
472	Disconnect
473	image delete $_image(plot)
474	image delete $_image(download)
475	catch { blt::arcball destroy $_arcball }
476	}
477
478	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
479	if { $_width < 2 } {
480	set _width 500
481	}
482	if { $_height < 2 } {
483	set _height 500
484	}
485	set _start [clock clicks -milliseconds]
486	SendCmd "screen size $_width $_height"
487
488	set _legendPending 1
489	set _resizePending 0
490	}
491
492	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
493	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
494	SendCmd "camera orient $q"
495	set _rotatePending 0
496	}
497
498	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
499	foreach dataset [CurrentDatasets -visible] {
500	foreach {dataobj comp} [split $dataset -] break
501	# This command works for either random or fmesh seeds
502	SendCmd "streamlines seed numpts $_numSeeds $dataset"
503	}
504	set _reseedPending 0
505	}
506
507	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
508	set _width $w
509	set _height $h
510	$_arcball resize $w $h
511	if { !$_resizePending } {
512	set _resizePending 1
513	$_dispatcher event -after 400 !resize
514	}
515	}
516
517	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
518	set _numSeeds $numPoints
519	if { !$_reseedPending } {
520	set _reseedPending 1
521	$_dispatcher event -after 600 !reseed
522	}
523	}
524
525	set rotate_delay 100
526
527	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
528	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
529	if { !$_rotatePending } {
530	set _rotatePending 1
531	global rotate_delay
532	$_dispatcher event -after $rotate_delay !rotate
533	}
534	}
535
536	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
537	if { !$_cutplanePending } {
538	set _cutplanePending 1
539	$_dispatcher event -after 100 !${axis}cutplane
540	}
541	}
542
543	# ----------------------------------------------------------------------
544	# USAGE: add <dataobj> ?<settings>?
545	#
546	# Clients use this to add a data object to the plot. The optional
547	# <settings> are used to configure the plot. Allowed settings are
548	# -color, -brightness, -width, -linestyle, and -raise.
549	# ----------------------------------------------------------------------
550	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
551	array set params {
552	-color auto
553	-width 1
554	-linestyle solid
555	-brightness 0
556	-raise 0
557	-description ""
558	-param ""
559	-type ""
560	}
561	array set params $settings
562	set params(-description) ""
563	set params(-param) ""
564	foreach {opt val} $settings {
565	if {![info exists params($opt)]} {
566	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
567	}
568	set params($opt) $val
569	}
570	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
571	# can't handle -autocolors yet
572	set params(-color) black
573	}
574	set pos [lsearch -exact $dataobj $_dlist]
575	if {$pos < 0} {
576	lappend _dlist $dataobj
577	}
578	set _obj2ovride($dataobj-color) $params(-color)
579	set _obj2ovride($dataobj-width) $params(-width)
580	set _obj2ovride($dataobj-raise) $params(-raise)
581	$_dispatcher event -idle !rebuild
582	}
583
584
585	# ----------------------------------------------------------------------
586	# USAGE: delete ?<dataobj1> <dataobj2> ...?
587	#
588	# Clients use this to delete a dataobj from the plot. If no dataobjs
589	# are specified, then all dataobjs are deleted. No data objects are
590	# deleted. They are only removed from the display list.
591	#
592	# ----------------------------------------------------------------------
593	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
594	if { [llength $args] == 0} {
595	set args $_dlist
596	}
597	# Delete all specified dataobjs
598	set changed 0
599	foreach dataobj $args {
600	set pos [lsearch -exact $_dlist $dataobj]
601	if { $pos < 0 } {
602	continue; # Don't know anything about it.
603	}
604	# Remove it from the dataobj list.
605	set _dlist [lreplace $_dlist $pos $pos]
606	array unset _obj2ovride $dataobj-*
607	array unset _settings $dataobj-*
608	# Append to the end of the dataobj list.
609	lappend _dlist $dataobj
610	set changed 1
611	}
612	# If anything changed, then rebuild the plot
613	if { $changed } {
614	$_dispatcher event -idle !rebuild
615	}
616	}
617
618	# ----------------------------------------------------------------------
619	# USAGE: get ?-objects?
620	# USAGE: get ?-visible?
621	# USAGE: get ?-image view?
622	#
623	# Clients use this to query the list of objects being plotted, in
624	# order from bottom to top of this result. The optional "-image"
625	# flag can also request the internal images being shown.
626	# ----------------------------------------------------------------------
627	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
628	if {[llength $args] == 0} {
629	set args "-objects"
630	}
631
632	set op [lindex $args 0]
633	switch -- $op {
634	"-objects" {
635	# put the dataobj list in order according to -raise options
636	set dlist {}
637	foreach dataobj $_dlist {
638	if { ![IsValidObject $dataobj] } {
639	continue
640	}
641	if {[info exists _obj2ovride($dataobj-raise)] &&
642	$_obj2ovride($dataobj-raise)} {
643	set dlist [linsert $dlist 0 $dataobj]
644	} else {
645	lappend dlist $dataobj
646	}
647	}
648	return $dlist
649	}
650	"-visible" {
651	set dlist {}
652	foreach dataobj $_dlist {
653	if { ![IsValidObject $dataobj] } {
654	continue
655	}
656	if { ![info exists _obj2ovride($dataobj-raise)] } {
657	# No setting indicates that the object isn't visible.
658	continue
659	}
660	# Otherwise use the -raise parameter to put the object to
661	# the front of the list.
662	if { $_obj2ovride($dataobj-raise) } {
663	set dlist [linsert $dlist 0 $dataobj]
664	} else {
665	lappend dlist $dataobj
666	}
667	}
668	return $dlist
669	}
670	-image {
671	if {[llength $args] != 2} {
672	error "wrong # args: should be \"get -image view\""
673	}
674	switch -- [lindex $args end] {
675	view {
676	return $_image(plot)
677	}
678	default {
679	error "bad image name \"[lindex $args end]\": should be view"
680	}
681	}
682	}
683	default {
684	error "bad option \"$op\": should be -objects or -image"
685	}
686	}
687	}
688
689	# ----------------------------------------------------------------------
690	# USAGE: scale ?<data1> <data2> ...?
691	#
692	# Sets the default limits for the overall plot according to the
693	# limits of the data for all of the given <data> objects. This
694	# accounts for all objects--even those not showing on the screen.
695	# Because of this, the limits are appropriate for all objects as
696	# the user scans through data in the ResultSet viewer.
697	# ----------------------------------------------------------------------
698	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
699	foreach dataobj $args {
700	foreach axis { x y z } {
701	set lim [$dataobj limits $axis]
702	if { ![info exists _limits($axis)] } {
703	set _limits($axis) $lim
704	continue
705	}
706	foreach {min max} $lim break
707	foreach {amin amax} $_limits($axis) break
708	if { $amin > $min } {
709	set amin $min
710	}
711	if { $amax < $max } {
712	set amax $max
713	}
714	set _limits($axis) [list $amin $amax]
715	}
716	foreach { fname lim } [$dataobj fieldlimits] {
717	if { ![info exists _limits($fname)] } {
718	set _limits($fname) $lim
719	continue
720	}
721	foreach {min max} $lim break
722	foreach {fmin fmax} $_limits($fname) break
723	if { $fmin > $min } {
724	set fmin $min
725	}
726	if { $fmax < $max } {
727	set fmax $max
728	}
729	set _limits($fname) [list $fmin $fmax]
730	}
731	}
732	}
733
734	# ----------------------------------------------------------------------
735	# USAGE: download coming
736	# USAGE: download controls <downloadCommand>
737	# USAGE: download now
738	#
739	# Clients use this method to create a downloadable representation
740	# of the plot. Returns a list of the form {ext string}, where
741	# "ext" is the file extension (indicating the type of data) and
742	# "string" is the data itself.
743	# ----------------------------------------------------------------------
744	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
745	switch $option {
746	coming {
747	if {[catch {
748	blt::winop snap $itk_component(plotarea) $_image(download)
749	}]} {
750	$_image(download) configure -width 1 -height 1
751	$_image(download) put #000000
752	}
753	}
754	controls {
755	set popup .vtkviewerdownload
756	if { ![winfo exists .vtkviewerdownload] } {
757	set inner [BuildDownloadPopup $popup [lindex $args 0]]
758	} else {
759	set inner [$popup component inner]
760	}
761	set _downloadPopup(image_controls) $inner.image_frame
762	set num [llength [get]]
763	set num [expr {($num == 1) ? "1 result" : "$num results"}]
764	set word [Rappture::filexfer::label downloadWord]
765	$inner.summary configure -text "$word $num in the following format:"
766	update idletasks ;# Fix initial sizes
767	return $popup
768	}
769	now {
770	set popup .vtkviewerdownload
771	if {[winfo exists .vtkviewerdownload]} {
772	$popup deactivate
773	}
774	switch -- $_downloadPopup(format) {
775	"image" {
776	return [$this GetImage [lindex $args 0]]
777	}
778	"vtk" {
779	return [$this GetVtkData [lindex $args 0]]
780	}
781	}
782	return ""
783	}
784	default {
785	error "bad option \"$option\": should be coming, controls, now"
786	}
787	}
788	}
789
790	# ----------------------------------------------------------------------
791	# USAGE: Connect ?<host:port>,<host:port>...?
792	#
793	# Clients use this method to establish a connection to a new
794	# server, or to reestablish a connection to the previous server.
795	# Any existing connection is automatically closed.
796	# ----------------------------------------------------------------------
797	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
798	set _hosts [GetServerList "vtkvis"]
799	if { "" == $_hosts } {
800	return 0
801	}
802	set result [VisViewer::Connect $_hosts]
803	if { $result } {
804	set w [winfo width $itk_component(view)]
805	set h [winfo height $itk_component(view)]
806	EventuallyResize $w $h
807	}
808	return $result
809	}
810
811	#
812	# isconnected --
813	#
814	# Indicates if we are currently connected to the visualization server.
815	#
816	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
817	return [VisViewer::IsConnected]
818	}
819
820	#
821	# disconnect --
822	#
823	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
824	Disconnect
825	set _reset 1
826	}
827
828	#
829	# Disconnect --
830	#
831	# Clients use this method to disconnect from the current rendering
832	# server.
833	#
834	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
835	VisViewer::Disconnect
836
837	$_dispatcher cancel !rebuild
838	$_dispatcher cancel !resize
839	$_dispatcher cancel !reseed
840	$_dispatcher cancel !rotate
841	$_dispatcher cancel !xcutplane
842	$_dispatcher cancel !ycutplane
843	$_dispatcher cancel !zcutplane
844	$_dispatcher cancel !legend
845	# disconnected -- no more data sitting on server
846	array unset _datasets
847	array unset _data
848	array unset _colormaps
849	array unset _seeds
850	array unset _dataset2style
851	array unset _obj2datasets
852	}
853
854	# ----------------------------------------------------------------------
855	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
856	#
857	# Invoked automatically whenever the "image" command comes in from
858	# the rendering server. Indicates that binary image data with the
859	# specified <size> will follow.
860	# ----------------------------------------------------------------------
861	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
862	array set info {
863	-token "???"
864	-bytes 0
865	-type image
866	}
867	array set info $args
868	set bytes [ReceiveBytes $info(-bytes)]
869	if { $info(-type) == "image" } {
870	if 0 {
871	set f [open "last.ppm" "w"]
872	puts $f $bytes
873	close $f
874	}
875	$_image(plot) configure -data $bytes
876	set time [clock seconds]
877	set date [clock format $time]
878	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
879	if { $_start > 0 } {
880	set finish [clock clicks -milliseconds]
881	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
882	set _start 0
883	}
884	} elseif { $info(type) == "print" } {
885	set tag $this-print-$info(-token)
886	set _hardcopy($tag) $bytes
887	}
888	if { $_legendPending } {
889	RequestLegend
890	}
891	}
892
893	#
894	# ReceiveDataset --
895	#
896	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
897	if { ![isconnected] } {
898	return
899	}
900	set option [lindex $args 0]
901	switch -- $option {
902	"scalar" {
903	set option [lindex $args 1]
904	switch -- $option {
905	"world" {
906	foreach { x y z value tag } [lrange $args 2 end] break
907	}
908	"pixel" {
909	foreach { x y value tag } [lrange $args 2 end] break
910	}
911	}
912	}
913	"vector" {
914	set option [lindex $args 1]
915	switch -- $option {
916	"world" {
917	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
918	}
919	"pixel" {
920	foreach { x y vx vy vz tag } [lrange $args 2 end] break
921	}
922	}
923	}
924	"names" {
925	foreach { name } [lindex $args 1] {
926	#puts stderr "Dataset: $name"
927	}
928	}
929	default {
930	error "unknown dataset option \"$option\" from server"
931	}
932	}
933	}
934
935	# ----------------------------------------------------------------------
936	# USAGE: Rebuild
937	#
938	# Called automatically whenever something changes that affects the
939	# data in the widget. Clears any existing data and rebuilds the
940	# widget to display new data.
941	# ----------------------------------------------------------------------
942	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
943	update
944	set w [winfo width $itk_component(view)]
945	set h [winfo height $itk_component(view)]
946	if { $w < 2 \|\| $h < 2 } {
947	$_dispatcher event -idle !rebuild
948	return
949	}
950
951	# Turn on buffering of commands to the server. We don't want to
952	# be preempted by a server disconnect/reconnect (which automatically
953	# generates a new call to Rebuild).
954	StartBufferingCommands
955	set _legendPending 1
956
957	set _first ""
958	if { $_reset } {
959	if { $_reportClientInfo } {
960	# Tell the server the name of the tool, the version, and dataset
961	# that we are rendering. Have to do it here because we don't know
962	# what data objects are using the renderer until be get here.
963	global env
964
965	set info {}
966	set user "???"
967	if { [info exists env(USER)] } {
968	set user $env(USER)
969	}
970	set session "???"
971	if { [info exists env(SESSION)] } {
972	set session $env(SESSION)
973	}
974	lappend info "hub" [exec hostname]
975	lappend info "client" "vtkstreamlinesviewer"
976	lappend info "user" $user
977	lappend info "session" $session
978	SendCmd "clientinfo [list $info]"
979	}
980	set _width $w
981	set _height $h
982	$_arcball resize $w $h
983	DoResize
984	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
985	axesVisible axisLabelsVisible
986	# This "imgflush" is to force an image returned before vtkvis starts
987	# reading a (big) dataset. This will display an empty plot with axes
988	# at the correct image size.
989	SendCmd "imgflush"
990	}
991
992	set _first ""
993	SendCmd "dataset visible 0"
994	foreach dataobj [get -objects] {
995	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
996	set _first $dataobj
997	}
998	set _obj2datasets($dataobj) ""
999	foreach comp [$dataobj components] {
1000	set tag $dataobj-$comp
1001	if { ![info exists _datasets($tag)] } {
1002	set bytes [$dataobj vtkdata $comp]
1003	set length [string length $bytes]
1004	if 0 {
1005	set f [open /tmp/vtkstreamlines.vtk "w"]
1006	fconfigure $f -translation binary -encoding binary
1007	puts $f $bytes
1008	close $f
1009	}
1010	if { $_reportClientInfo } {
1011	set info {}
1012	lappend info "tool_id" [$dataobj hints toolId]
1013	lappend info "tool_name" [$dataobj hints toolName]
1014	lappend info "tool_version" [$dataobj hints toolRevision]
1015	lappend info "tool_title" [$dataobj hints toolTitle]
1016	lappend info "dataset_label" [$dataobj hints label]
1017	lappend info "dataset_size" $length
1018	lappend info "dataset_tag" $tag
1019	SendCmd "clientinfo [list $info]"
1020	}
1021	SendCmd "dataset add $tag data follows $length"
1022	append _outbuf $bytes
1023	set _datasets($tag) 1
1024	SetObjectStyle $dataobj $comp
1025	}
1026	lappend _obj2datasets($dataobj) $tag
1027	if { [info exists _obj2ovride($dataobj-raise)] } {
1028	SendCmd "dataset visible 1 $tag"
1029	}
1030	}
1031	}
1032	if {"" != $_first} {
1033	set location [$_first hints camera]
1034	if { $location != "" } {
1035	array set view $location
1036	}
1037	foreach axis { x y z } {
1038	set label [$_first hints ${axis}label]
1039	if { $label != "" } {
1040	SendCmd "axis name $axis $label"
1041	}
1042	set units [$_first hints ${axis}units]
1043	if { $units != "" } {
1044	SendCmd "axis units $axis $units"
1045	}
1046	}
1047	$itk_component(field) choices delete 0 end
1048	$itk_component(fieldmenu) delete 0 end
1049	array unset _fields
1050	set _curFldName ""
1051	foreach cname [$_first components] {
1052	foreach fname [$_first fieldnames $cname] {
1053	if { [info exists _fields($fname)] } {
1054	continue
1055	}
1056	foreach { label units components } \
1057	[$_first fieldinfo $fname] break
1058	$itk_component(field) choices insert end "$fname" "$label"
1059	$itk_component(fieldmenu) add radiobutton -label "$label" \
1060	-value $label -variable [itcl::scope _curFldLabel] \
1061	-selectcolor red \
1062	-activebackground $itk_option(-plotbackground) \
1063	-activeforeground $itk_option(-plotforeground) \
1064	-font "Arial 8" \
1065	-command [itcl::code $this Combo invoke]
1066	set _fields($fname) [list $label $units $components]
1067	if { $_curFldName == "" } {
1068	set _curFldName $fname
1069	set _curFldLabel $label
1070	}
1071	}
1072	}
1073	$itk_component(field) value $_curFldLabel
1074	}
1075
1076	if { $_reset } {
1077	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1078	streamlinesVisible streamlinesColormap \
1079	streamlinesLighting \
1080	streamlinesColormap field \
1081	volumeVisible volumeEdges volumeLighting volumeOpacity \
1082	volumeWireframe \
1083	cutplaneVisible \
1084	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1085	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1086
1087	# Reset the camera and other view parameters
1088	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1089	$_arcball quaternion $q
1090	if {$_view(ortho)} {
1091	SendCmd "camera mode ortho"
1092	} else {
1093	SendCmd "camera mode persp"
1094	}
1095	DoRotate
1096	PanCamera
1097	Zoom reset
1098	SendCmd "camera reset"
1099	set _reset 0
1100	}
1101	# Actually write the commands to the server socket. If it fails, we don't
1102	# care. We're finished here.
1103	blt::busy hold $itk_component(hull)
1104	StopBufferingCommands
1105	blt::busy release $itk_component(hull)
1106	}
1107
1108	# ----------------------------------------------------------------------
1109	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1110	#
1111	# Returns a list of server IDs for the current datasets being displayed. This
1112	# is normally a single ID, but it might be a list of IDs if the current data
1113	# object has multiple components.
1114	# ----------------------------------------------------------------------
1115	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1116	set flag [lindex $args 0]
1117	switch -- $flag {
1118	"-all" {
1119	if { [llength $args] > 1 } {
1120	error "CurrentDatasets: can't specify dataobj after \"-all\""
1121	}
1122	set dlist [get -objects]
1123	}
1124	"-visible" {
1125	if { [llength $args] > 1 } {
1126	set dlist {}
1127	set args [lrange $args 1 end]
1128	foreach dataobj $args {
1129	if { [info exists _obj2ovride($dataobj-raise)] } {
1130	lappend dlist $dataobj
1131	}
1132	}
1133	} else {
1134	set dlist [get -visible]
1135	}
1136	}
1137	default {
1138	set dlist $args
1139	}
1140	}
1141	set rlist ""
1142	foreach dataobj $dlist {
1143	foreach comp [$dataobj components] {
1144	set tag $dataobj-$comp
1145	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1146	lappend rlist $tag
1147	}
1148	}
1149	}
1150	return $rlist
1151	}
1152
1153	# ----------------------------------------------------------------------
1154	# USAGE: Zoom in
1155	# USAGE: Zoom out
1156	# USAGE: Zoom reset
1157	#
1158	# Called automatically when the user clicks on one of the zoom
1159	# controls for this widget. Changes the zoom for the current view.
1160	# ----------------------------------------------------------------------
1161	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1162	switch -- $option {
1163	"in" {
1164	set _view(zoom) [expr {$_view(zoom)*1.25}]
1165	SendCmd "camera zoom $_view(zoom)"
1166	}
1167	"out" {
1168	set _view(zoom) [expr {$_view(zoom)*0.8}]
1169	SendCmd "camera zoom $_view(zoom)"
1170	}
1171	"reset" {
1172	array set _view {
1173	qw 0.853553
1174	qx -0.353553
1175	qy 0.353553
1176	qz 0.146447
1177	zoom 1.0
1178	xpan 0
1179	ypan 0
1180	}
1181	if { $_first != "" } {
1182	set location [$_first hints camera]
1183	if { $location != "" } {
1184	array set _view $location
1185	}
1186	}
1187	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1188	$_arcball quaternion $q
1189	DoRotate
1190	SendCmd "camera reset"
1191	}
1192	}
1193	}
1194
1195	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1196	set x $_view(xpan)
1197	set y $_view(ypan)
1198	SendCmd "camera pan $x $y"
1199	}
1200
1201
1202	# ----------------------------------------------------------------------
1203	# USAGE: Rotate click <x> <y>
1204	# USAGE: Rotate drag <x> <y>
1205	# USAGE: Rotate release <x> <y>
1206	#
1207	# Called automatically when the user clicks/drags/releases in the
1208	# plot area. Moves the plot according to the user's actions.
1209	# ----------------------------------------------------------------------
1210	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1211	switch -- $option {
1212	"click" {
1213	$itk_component(view) configure -cursor fleur
1214	set _click(x) $x
1215	set _click(y) $y
1216	}
1217	"drag" {
1218	if {[array size _click] == 0} {
1219	Rotate click $x $y
1220	} else {
1221	set w [winfo width $itk_component(view)]
1222	set h [winfo height $itk_component(view)]
1223	if {$w <= 0 \|\| $h <= 0} {
1224	return
1225	}
1226
1227	if {[catch {
1228	# this fails sometimes for no apparent reason
1229	set dx [expr {double($x-$_click(x))/$w}]
1230	set dy [expr {double($y-$_click(y))/$h}]
1231	}]} {
1232	return
1233	}
1234	if { $dx == 0 && $dy == 0 } {
1235	return
1236	}
1237	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1238	EventuallyRotate $q
1239	set _click(x) $x
1240	set _click(y) $y
1241	}
1242	}
1243	"release" {
1244	Rotate drag $x $y
1245	$itk_component(view) configure -cursor ""
1246	catch {unset _click}
1247	}
1248	default {
1249	error "bad option \"$option\": should be click, drag, release"
1250	}
1251	}
1252	}
1253
1254	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1255	foreach tag [CurrentDatasets -visible] {
1256	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1257	}
1258	}
1259
1260	# ----------------------------------------------------------------------
1261	# USAGE: $this Pan click x y
1262	# $this Pan drag x y
1263	# $this Pan release x y
1264	#
1265	# Called automatically when the user clicks on one of the zoom
1266	# controls for this widget. Changes the zoom for the current view.
1267	# ----------------------------------------------------------------------
1268	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1269	switch -- $option {
1270	"set" {
1271	set w [winfo width $itk_component(view)]
1272	set h [winfo height $itk_component(view)]
1273	set x [expr $x / double($w)]
1274	set y [expr $y / double($h)]
1275	set _view(xpan) [expr $_view(xpan) + $x]
1276	set _view(ypan) [expr $_view(ypan) + $y]
1277	PanCamera
1278	return
1279	}
1280	"click" {
1281	set _click(x) $x
1282	set _click(y) $y
1283	$itk_component(view) configure -cursor hand1
1284	}
1285	"drag" {
1286	if { ![info exists _click(x)] } {
1287	set _click(x) $x
1288	}
1289	if { ![info exists _click(y)] } {
1290	set _click(y) $y
1291	}
1292	set w [winfo width $itk_component(view)]
1293	set h [winfo height $itk_component(view)]
1294	set dx [expr ($_click(x) - $x)/double($w)]
1295	set dy [expr ($_click(y) - $y)/double($h)]
1296	set _click(x) $x
1297	set _click(y) $y
1298	set _view(xpan) [expr $_view(xpan) - $dx]
1299	set _view(ypan) [expr $_view(ypan) - $dy]
1300	PanCamera
1301	}
1302	"release" {
1303	Pan drag $x $y
1304	$itk_component(view) configure -cursor ""
1305	}
1306	default {
1307	error "unknown option \"$option\": should set, click, drag, or release"
1308	}
1309	}
1310	}
1311
1312	# ----------------------------------------------------------------------
1313	# USAGE: InitSettings <what> ?<value>?
1314	#
1315	# Used internally to update rendering settings whenever parameters
1316	# change in the popup settings panel. Sends the new settings off
1317	# to the back end.
1318	# ----------------------------------------------------------------------
1319	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1320	foreach spec $args {
1321	if { [info exists _settings($_first-$spec)] } {
1322	# Reset global setting with dataobj specific setting
1323	set _settings($spec) $_settings($_first-$spec)
1324	}
1325	AdjustSetting $spec
1326	}
1327	}
1328
1329	#
1330	# AdjustSetting --
1331	#
1332	# Changes/updates a specific setting in the widget. There are
1333	# usually user-setable option. Commands are sent to the render
1334	# server.
1335	#
1336	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1337	if { ![isconnected] } {
1338	return
1339	}
1340	switch -- $what {
1341	"volumeOpacity" {
1342	set val $_settings(volumeOpacity)
1343	set sval [expr { 0.01 * double($val) }]
1344	SendCmd "polydata opacity $sval"
1345	}
1346	"volumeWireframe" {
1347	set bool $_settings(volumeWireframe)
1348	SendCmd "polydata wireframe $bool"
1349	}
1350	"volumeVisible" {
1351	set bool $_settings(volumeVisible)
1352	SendCmd "polydata visible $bool"
1353	if { $bool } {
1354	Rappture::Tooltip::for $itk_component(volume) \
1355	"Hide the volume"
1356	} else {
1357	Rappture::Tooltip::for $itk_component(volume) \
1358	"Show the volume"
1359	}
1360	}
1361	"volumeLighting" {
1362	set bool $_settings(volumeLighting)
1363	SendCmd "polydata lighting $bool"
1364	}
1365	"volumeEdges" {
1366	set bool $_settings(volumeEdges)
1367	SendCmd "polydata edges $bool"
1368	}
1369	"axesVisible" {
1370	set bool $_settings(axesVisible)
1371	SendCmd "axis visible all $bool"
1372	}
1373	"axisLabelsVisible" {
1374	set bool $_settings(axisLabelsVisible)
1375	SendCmd "axis labels all $bool"
1376	}
1377	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1378	set axis [string tolower [string range $what 4 4]]
1379	set bool $_settings($what)
1380	SendCmd "axis grid $axis $bool"
1381	}
1382	"axis-mode" {
1383	set mode [$itk_component(axismode) value]
1384	set mode [$itk_component(axismode) translate $mode]
1385	set _settings($what) $mode
1386	SendCmd "axis flymode $mode"
1387	}
1388	"cutplaneEdges" {
1389	set bool $_settings($what)
1390	SendCmd "cutplane edges $bool"
1391	}
1392	"cutplaneVisible" {
1393	set bool $_settings($what)
1394	SendCmd "cutplane visible $bool"
1395	}
1396	"cutplaneWireframe" {
1397	set bool $_settings($what)
1398	SendCmd "cutplane wireframe $bool"
1399	}
1400	"cutplaneLighting" {
1401	set bool $_settings($what)
1402	SendCmd "cutplane lighting $bool"
1403	}
1404	"cutplaneOpacity" {
1405	set val $_settings($what)
1406	set sval [expr { 0.01 * double($val) }]
1407	SendCmd "cutplane opacity $sval"
1408	}
1409	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1410	set axis [string tolower [string range $what 8 8]]
1411	set bool $_settings($what)
1412	if { $bool } {
1413	$itk_component(${axis}CutScale) configure -state normal \
1414	-troughcolor white
1415	} else {
1416	$itk_component(${axis}CutScale) configure -state disabled \
1417	-troughcolor grey82
1418	}
1419	SendCmd "cutplane axis $axis $bool"
1420	}
1421	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1422	set axis [string tolower [string range $what 8 8]]
1423	set pos [expr $_settings($what) * 0.01]
1424	SendCmd "cutplane slice ${axis} ${pos}"
1425	set _cutplanePending 0
1426	}
1427	"streamlinesSeedsVisible" {
1428	set bool $_settings($what)
1429	SendCmd "streamlines seed visible $bool"
1430	}
1431	"streamlinesNumSeeds" {
1432	set density $_settings($what)
1433	EventuallyReseed $density
1434	}
1435	"streamlinesVisible" {
1436	set bool $_settings($what)
1437	SendCmd "streamlines visible $bool"
1438	if { $bool } {
1439	Rappture::Tooltip::for $itk_component(streamlines) \
1440	"Hide the streamlines"
1441	} else {
1442	Rappture::Tooltip::for $itk_component(streamlines) \
1443	"Show the streamlines"
1444	}
1445	}
1446	"streamlinesMode" {
1447	set mode [$itk_component(streammode) value]
1448	set _settings(streamlinesMode) $mode
1449	switch -- $mode {
1450	"lines" {
1451	SendCmd "streamlines lines"
1452	}
1453	"ribbons" {
1454	SendCmd "streamlines ribbons 3 0"
1455	}
1456	"tubes" {
1457	SendCmd "streamlines tubes 5 3"
1458	}
1459	}
1460	}
1461	"streamlinesColormap" {
1462	set colormap [$itk_component(colormap) value]
1463	set _settings(streamlinesColormap) $colormap
1464	foreach dataset [CurrentDatasets -visible $_first] {
1465	foreach {dataobj comp} [split $dataset -] break
1466	ChangeColormap $dataobj $comp $colormap
1467	}
1468	set _legendPending 1
1469	}
1470	"streamlinesOpacity" {
1471	set val $_settings(streamlinesOpacity)
1472	set sval [expr { 0.01 * double($val) }]
1473	SendCmd "streamlines opacity $sval"
1474	}
1475	"streamlinesScale" {
1476	set val $_settings(streamlinesScale)
1477	set sval [expr { 0.01 * double($val) }]
1478	SendCmd "streamlines scale $sval $sval $sval"
1479	}
1480	"streamlinesLighting" {
1481	set bool $_settings(streamlinesLighting)
1482	SendCmd "streamlines lighting $bool"
1483	}
1484	"field" {
1485	set label [$itk_component(field) value]
1486	set fname [$itk_component(field) translate $label]
1487	set _settings(field) $fname
1488	if { [info exists _fields($fname)] } {
1489	foreach { label units components } $_fields($fname) break
1490	if { $components > 1 } {
1491	set _colorMode vmag
1492	} else {
1493	set _colorMode scalar
1494	}
1495	set _curFldName $fname
1496	set _curFldLabel $label
1497	} else {
1498	puts stderr "unknown field \"$fname\""
1499	return
1500	}
1501	# Get the new limits because the field changed.
1502	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1503	SendCmd "streamlines colormode $_colorMode $_curFldName"
1504	SendCmd "cutplane colormode $_colorMode $_curFldName"
1505	DrawLegend
1506	}
1507	default {
1508	error "don't know how to fix $what"
1509	}
1510	}
1511	}
1512
1513	#
1514	# RequestLegend --
1515	#
1516	# Request a new legend from the server. The size of the legend
1517	# is determined from the height of the canvas. It will be rotated
1518	# to be vertical when drawn.
1519	#
1520	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1521	set font "Arial 8"
1522	set lineht [font metrics $font -linespace]
1523	set c $itk_component(legend)
1524	set w 12
1525	set h [expr {$_height - 3 * ($lineht + 2)}]
1526	if { $h < 1} {
1527	return
1528	}
1529	# Set the legend on the first streamlines dataset.
1530	foreach dataset [CurrentDatasets -visible $_first] {
1531	foreach {dataobj comp} [split $dataset -] break
1532	if { [info exists _dataset2style($dataset)] } {
1533	SendCmdNoWait \
1534	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1535	break;
1536	}
1537	}
1538	}
1539
1540	#
1541	# ChangeColormap --
1542	#
1543	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1544	set tag $dataobj-$comp
1545	if { ![info exist _style($tag)] } {
1546	error "no initial colormap"
1547	}
1548	array set style $_style($tag)
1549	set style(-color) $color
1550	set _style($tag) [array get style]
1551	SetColormap $dataobj $comp
1552	}
1553
1554	#
1555	# SetColormap --
1556	#
1557	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1558	array set style {
1559	-color BCGYR
1560	-levels 6
1561	-opacity 1.0
1562	}
1563	set tag $dataobj-$comp
1564	if { ![info exists _initialStyle($tag)] } {
1565	# Save the initial component style.
1566	set _initialStyle($tag) [$dataobj style $comp]
1567	}
1568
1569	# Override defaults with initial style defined in xml.
1570	array set style $_initialStyle($tag)
1571
1572	if { ![info exists _style($tag)] } {
1573	set _style($tag) [array get style]
1574	}
1575	# Override initial style with current style.
1576	array set style $_style($tag)
1577
1578	set name "$style(-color):$style(-levels):$style(-opacity)"
1579	if { ![info exists _colormaps($name)] } {
1580	BuildColormap $name [array get style]
1581	set _colormaps($name) 1
1582	}
1583	if { ![info exists _dataset2style($tag)] \|\|
1584	$_dataset2style($tag) != $name } {
1585	SendCmd "streamlines colormap $name $tag"
1586	SendCmd "cutplane colormap $name $tag"
1587	set _dataset2style($tag) $name
1588	}
1589	}
1590
1591
1592	#
1593	# BuildColormap --
1594	#
1595	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1596	array set style $styles
1597	set cmap [ColorsToColormap $style(-color)]
1598	if { [llength $cmap] == 0 } {
1599	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1600	}
1601	if { ![info exists _settings(volumeOpacity)] } {
1602	set _settings(volumeOpacity) $style(-opacity)
1603	}
1604	set max $_settings(volumeOpacity)
1605
1606	set wmap "0.0 1.0 1.0 1.0"
1607	SendCmd "colormap add $name { $cmap } { $wmap }"
1608	}
1609
1610	# ----------------------------------------------------------------------
1611	# CONFIGURATION OPTION: -plotbackground
1612	# ----------------------------------------------------------------------
1613	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1614	if { [isconnected] } {
1615	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1616	SendCmd "screen bgcolor $r $g $b"
1617	}
1618	}
1619
1620	# ----------------------------------------------------------------------
1621	# CONFIGURATION OPTION: -plotforeground
1622	# ----------------------------------------------------------------------
1623	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1624	if { [isconnected] } {
1625	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1626	#fix this!
1627	#SendCmd "color background $r $g $b"
1628	}
1629	}
1630
1631	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1632
1633	set fg [option get $itk_component(hull) font Font]
1634	#set bfg [option get $itk_component(hull) boldFont Font]
1635
1636	set inner [$itk_component(main) insert end \
1637	-title "Volume Settings" \
1638	-icon [Rappture::icon volume-on]]
1639	$inner configure -borderwidth 4
1640
1641	checkbutton $inner.volume \
1642	-text "Show Volume" \
1643	-variable [itcl::scope _settings(volumeVisible)] \
1644	-command [itcl::code $this AdjustSetting volumeVisible] \
1645	-font "Arial 9"
1646
1647	checkbutton $inner.wireframe \
1648	-text "Show Wireframe" \
1649	-variable [itcl::scope _settings(volumeWireframe)] \
1650	-command [itcl::code $this AdjustSetting volumeWireframe] \
1651	-font "Arial 9"
1652
1653	checkbutton $inner.lighting \
1654	-text "Enable Lighting" \
1655	-variable [itcl::scope _settings(volumeLighting)] \
1656	-command [itcl::code $this AdjustSetting volumeLighting] \
1657	-font "Arial 9"
1658
1659	checkbutton $inner.edges \
1660	-text "Show Edges" \
1661	-variable [itcl::scope _settings(volumeEdges)] \
1662	-command [itcl::code $this AdjustSetting volumeEdges] \
1663	-font "Arial 9"
1664
1665	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1666	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1667	-variable [itcl::scope _settings(volumeOpacity)] \
1668	-width 10 \
1669	-showvalue off \
1670	-command [itcl::code $this AdjustSetting volumeOpacity]
1671
1672	blt::table $inner \
1673	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1674	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1675	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1676	3,0 $inner.opacity_l -anchor w -pady 2 \
1677	3,1 $inner.opacity -fill x -pady 2
1678
1679	blt::table configure $inner r* c* -resize none
1680	blt::table configure $inner r4 c1 -resize expand
1681	}
1682
1683
1684	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1685
1686	set fg [option get $itk_component(hull) font Font]
1687	#set bfg [option get $itk_component(hull) boldFont Font]
1688
1689	set inner [$itk_component(main) insert end \
1690	-title "Streams Settings" \
1691	-icon [Rappture::icon streamlines-on]]
1692	$inner configure -borderwidth 4
1693
1694	checkbutton $inner.streamlines \
1695	-text "Show Streamlines" \
1696	-variable [itcl::scope _settings(streamlinesVisible)] \
1697	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1698	-font "Arial 9"
1699
1700	checkbutton $inner.lighting \
1701	-text "Enable Lighting" \
1702	-variable [itcl::scope _settings(streamlinesLighting)] \
1703	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1704	-font "Arial 9"
1705
1706	checkbutton $inner.seeds \
1707	-text "Show Seeds" \
1708	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1709	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1710	-font "Arial 9"
1711
1712	label $inner.mode_l -text "Mode" -font "Arial 9"
1713	itk_component add streammode {
1714	Rappture::Combobox $inner.mode -width 10 -editable no
1715	}
1716	$inner.mode choices insert end \
1717	"lines" "lines" \
1718	"ribbons" "ribbons" \
1719	"tubes" "tubes"
1720	$itk_component(streammode) value $_settings(streamlinesMode)
1721	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1722
1723	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1724	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1725	-variable [itcl::scope _settings(streamlinesOpacity)] \
1726	-width 10 \
1727	-showvalue off \
1728	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1729
1730	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1731	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1732	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1733	-width 10 \
1734	-showvalue on \
1735	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1736
1737	label $inner.scale_l -text "Scale" -font "Arial 9"
1738	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1739	-variable [itcl::scope _settings(streamlinesScale)] \
1740	-width 10 \
1741	-showvalue off \
1742	-command [itcl::code $this AdjustSetting streamlinesScale]
1743
1744	label $inner.field_l -text "Color by" -font "Arial 9"
1745	itk_component add field {
1746	Rappture::Combobox $inner.field -width 10 -editable no
1747	}
1748	bind $inner.field <<Value>> \
1749	[itcl::code $this AdjustSetting field]
1750
1751	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1752	itk_component add colormap {
1753	Rappture::Combobox $inner.colormap -width 10 -editable no
1754	}
1755	$inner.colormap choices insert end \
1756	"BCGYR" "BCGYR" \
1757	"BGYOR" "BGYOR" \
1758	"blue" "blue" \
1759	"blue-to-brown" "blue-to-brown" \
1760	"blue-to-orange" "blue-to-orange" \
1761	"blue-to-grey" "blue-to-grey" \
1762	"green-to-magenta" "green-to-magenta" \
1763	"greyscale" "greyscale" \
1764	"nanohub" "nanohub" \
1765	"rainbow" "rainbow" \
1766	"spectral" "spectral" \
1767	"ROYGB" "ROYGB" \
1768	"RYGCB" "RYGCB" \
1769	"brown-to-blue" "brown-to-blue" \
1770	"grey-to-blue" "grey-to-blue" \
1771	"orange-to-blue" "orange-to-blue"
1772
1773	$itk_component(colormap) value "BCGYR"
1774	bind $inner.colormap <<Value>> \
1775	[itcl::code $this AdjustSetting streamlinesColormap]
1776
1777	blt::table $inner \
1778	0,0 $inner.field_l -anchor w -pady 2 \
1779	0,1 $inner.field -fill x -pady 2 \
1780	1,0 $inner.colormap_l -anchor w -pady 2 \
1781	1,1 $inner.colormap -fill x -pady 2 \
1782	2,0 $inner.mode_l -anchor w -pady 2 \
1783	2,1 $inner.mode -fill x -pady 2 \
1784	3,0 $inner.opacity_l -anchor w -pady 2 \
1785	3,1 $inner.opacity -fill x -pady 2 \
1786	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1787	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1788	7,0 $inner.density_l -anchor w -pady 2 \
1789	7,1 $inner.density -fill x -pady 2 \
1790
1791	blt::table configure $inner r* c* -resize none
1792	blt::table configure $inner r10 c1 c2 -resize expand
1793	}
1794
1795	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1796
1797	set fg [option get $itk_component(hull) font Font]
1798	#set bfg [option get $itk_component(hull) boldFont Font]
1799
1800	set inner [$itk_component(main) insert end \
1801	-title "Axis Settings" \
1802	-icon [Rappture::icon axis1]]
1803	$inner configure -borderwidth 4
1804
1805	checkbutton $inner.visible \
1806	-text "Show Axes" \
1807	-variable [itcl::scope _settings(axesVisible)] \
1808	-command [itcl::code $this AdjustSetting axesVisible] \
1809	-font "Arial 9"
1810
1811	checkbutton $inner.labels \
1812	-text "Show Axis Labels" \
1813	-variable [itcl::scope _settings(axisLabelsVisible)] \
1814	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1815	-font "Arial 9"
1816
1817	checkbutton $inner.xgrid \
1818	-text "Show X Grid" \
1819	-variable [itcl::scope _settings(axisXGrid)] \
1820	-command [itcl::code $this AdjustSetting axisXGrid] \
1821	-font "Arial 9"
1822	checkbutton $inner.ygrid \
1823	-text "Show Y Grid" \
1824	-variable [itcl::scope _settings(axisYGrid)] \
1825	-command [itcl::code $this AdjustSetting axisYGrid] \
1826	-font "Arial 9"
1827	checkbutton $inner.zgrid \
1828	-text "Show Z Grid" \
1829	-variable [itcl::scope _settings(axisZGrid)] \
1830	-command [itcl::code $this AdjustSetting axisZGrid] \
1831	-font "Arial 9"
1832
1833	label $inner.mode_l -text "Mode" -font "Arial 9"
1834
1835	itk_component add axismode {
1836	Rappture::Combobox $inner.mode -width 10 -editable no
1837	}
1838	$inner.mode choices insert end \
1839	"static_triad" "static" \
1840	"closest_triad" "closest" \
1841	"furthest_triad" "furthest" \
1842	"outer_edges" "outer"
1843	$itk_component(axismode) value "static"
1844	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1845
1846	blt::table $inner \
1847	0,0 $inner.visible -anchor w -cspan 2 \
1848	1,0 $inner.labels -anchor w -cspan 2 \
1849	2,0 $inner.xgrid -anchor w -cspan 2 \
1850	3,0 $inner.ygrid -anchor w -cspan 2 \
1851	4,0 $inner.zgrid -anchor w -cspan 2 \
1852	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1853	6,0 $inner.mode -fill x -cspan 2
1854
1855	blt::table configure $inner r* c* -resize none
1856	blt::table configure $inner r7 c1 -resize expand
1857	}
1858
1859
1860	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1861	set inner [$itk_component(main) insert end \
1862	-title "Camera Settings" \
1863	-icon [Rappture::icon camera]]
1864	$inner configure -borderwidth 4
1865
1866	label $inner.view_l -text "view" -font "Arial 9"
1867	set f [frame $inner.view]
1868	foreach side { front back left right top bottom } {
1869	button $f.$side -image [Rappture::icon view$side] \
1870	-command [itcl::code $this SetOrientation $side]
1871	Rappture::Tooltip::for $f.$side "Change the view to $side"
1872	pack $f.$side -side left
1873	}
1874
1875	blt::table $inner \
1876	0,0 $inner.view_l -anchor e -pady 2 \
1877	0,1 $inner.view -anchor w -pady 2
1878
1879	set labels { qx qy qz qw xpan ypan zoom }
1880	set row 1
1881	foreach tag $labels {
1882	label $inner.${tag}label -text $tag -font "Arial 9"
1883	entry $inner.${tag} -font "Arial 9" -bg white \
1884	-textvariable [itcl::scope _view($tag)]
1885	bind $inner.${tag} <KeyPress-Return> \
1886	[itcl::code $this camera set ${tag}]
1887	blt::table $inner \
1888	$row,0 $inner.${tag}label -anchor e -pady 2 \
1889	$row,1 $inner.${tag} -anchor w -pady 2
1890	blt::table configure $inner r$row -resize none
1891	incr row
1892	}
1893	checkbutton $inner.ortho \
1894	-text "Orthographic Projection" \
1895	-variable [itcl::scope _view(ortho)] \
1896	-command [itcl::code $this camera set ortho] \
1897	-font "Arial 9"
1898	blt::table $inner \
1899	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1900	blt::table configure $inner r$row -resize none
1901	incr row
1902
1903	blt::table configure $inner c* r* -resize none
1904	blt::table configure $inner c2 -resize expand
1905	blt::table configure $inner r$row -resize expand
1906	}
1907
1908	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1909
1910	set fg [option get $itk_component(hull) font Font]
1911
1912	set inner [$itk_component(main) insert end \
1913	-title "Cutplane Settings" \
1914	-icon [Rappture::icon cutbutton]]
1915
1916	$inner configure -borderwidth 4
1917
1918	checkbutton $inner.visible \
1919	-text "Show Cutplanes" \
1920	-variable [itcl::scope _settings(cutplaneVisible)] \
1921	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1922	-font "Arial 9"
1923
1924	checkbutton $inner.wireframe \
1925	-text "Show Wireframe" \
1926	-variable [itcl::scope _settings(cutplaneWireframe)] \
1927	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1928	-font "Arial 9"
1929
1930	checkbutton $inner.lighting \
1931	-text "Enable Lighting" \
1932	-variable [itcl::scope _settings(cutplaneLighting)] \
1933	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1934	-font "Arial 9"
1935
1936	checkbutton $inner.edges \
1937	-text "Show Edges" \
1938	-variable [itcl::scope _settings(cutplaneEdges)] \
1939	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1940	-font "Arial 9"
1941
1942	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1943	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1944	-variable [itcl::scope _settings(cutplaneOpacity)] \
1945	-width 10 \
1946	-showvalue off \
1947	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1948	$inner.opacity set $_settings(cutplaneOpacity)
1949
1950	# X-value slicer...
1951	itk_component add xCutButton {
1952	Rappture::PushButton $inner.xbutton \
1953	-onimage [Rappture::icon x-cutplane-red] \
1954	-offimage [Rappture::icon x-cutplane-red] \
1955	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1956	-variable [itcl::scope _settings(cutplaneXVisible)]
1957	}
1958	Rappture::Tooltip::for $itk_component(xCutButton) \
1959	"Toggle the X-axis cutplane on/off"
1960	$itk_component(xCutButton) select
1961
1962	itk_component add xCutScale {
1963	::scale $inner.xval -from 100 -to 0 \
1964	-width 10 -orient vertical -showvalue yes \
1965	-borderwidth 1 -highlightthickness 0 \
1966	-command [itcl::code $this EventuallySetCutplane x] \
1967	-variable [itcl::scope _settings(cutplaneXPosition)] \
1968	-foreground red3 -font "Arial 9 bold"
1969	} {
1970	usual
1971	ignore -borderwidth -highlightthickness -foreground -font
1972	}
1973	# Set the default cutplane value before disabling the scale.
1974	$itk_component(xCutScale) set 50
1975	$itk_component(xCutScale) configure -state disabled
1976	Rappture::Tooltip::for $itk_component(xCutScale) \
1977	"@[itcl::code $this Slice tooltip x]"
1978
1979	# Y-value slicer...
1980	itk_component add yCutButton {
1981	Rappture::PushButton $inner.ybutton \
1982	-onimage [Rappture::icon y-cutplane-green] \
1983	-offimage [Rappture::icon y-cutplane-green] \
1984	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1985	-variable [itcl::scope _settings(cutplaneYVisible)]
1986	}
1987	Rappture::Tooltip::for $itk_component(yCutButton) \
1988	"Toggle the Y-axis cutplane on/off"
1989	$itk_component(yCutButton) select
1990
1991	itk_component add yCutScale {
1992	::scale $inner.yval -from 100 -to 0 \
1993	-width 10 -orient vertical -showvalue yes \
1994	-borderwidth 1 -highlightthickness 0 \
1995	-command [itcl::code $this EventuallySetCutplane y] \
1996	-variable [itcl::scope _settings(cutplaneYPosition)] \
1997	-foreground green3 -font "Arial 9 bold"
1998	} {
1999	usual
2000	ignore -borderwidth -highlightthickness -foreground -font
2001	}
2002	Rappture::Tooltip::for $itk_component(yCutScale) \
2003	"@[itcl::code $this Slice tooltip y]"
2004	# Set the default cutplane value before disabling the scale.
2005	$itk_component(yCutScale) set 50
2006	$itk_component(yCutScale) configure -state disabled
2007
2008	# Z-value slicer...
2009	itk_component add zCutButton {
2010	Rappture::PushButton $inner.zbutton \
2011	-onimage [Rappture::icon z-cutplane-blue] \
2012	-offimage [Rappture::icon z-cutplane-blue] \
2013	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
2014	-variable [itcl::scope _settings(cutplaneZVisible)]
2015	}
2016	Rappture::Tooltip::for $itk_component(zCutButton) \
2017	"Toggle the Z-axis cutplane on/off"
2018	$itk_component(zCutButton) select
2019
2020	itk_component add zCutScale {
2021	::scale $inner.zval -from 100 -to 0 \
2022	-width 10 -orient vertical -showvalue yes \
2023	-borderwidth 1 -highlightthickness 0 \
2024	-command [itcl::code $this EventuallySetCutplane z] \
2025	-variable [itcl::scope _settings(cutplaneZPosition)] \
2026	-foreground blue3 -font "Arial 9 bold"
2027	} {
2028	usual
2029	ignore -borderwidth -highlightthickness -foreground -font
2030	}
2031	$itk_component(zCutScale) set 50
2032	$itk_component(zCutScale) configure -state disabled
2033	#$itk_component(zCutScale) configure -state disabled
2034	Rappture::Tooltip::for $itk_component(zCutScale) \
2035	"@[itcl::code $this Slice tooltip z]"
2036
2037	blt::table $inner \
2038	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2039	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2040	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2041	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2042	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2043	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2044	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2045	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2046	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2047	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2048	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2049
2050	blt::table configure $inner r* c* -resize none
2051	blt::table configure $inner r7 c4 -resize expand
2052	}
2053
2054
2055
2056	#
2057	# camera --
2058	#
2059	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2060	switch -- $option {
2061	"show" {
2062	puts [array get _view]
2063	}
2064	"set" {
2065	set who [lindex $args 0]
2066	set x $_view($who)
2067	set code [catch { string is double $x } result]
2068	if { $code != 0 \|\| !$result } {
2069	return
2070	}
2071	switch -- $who {
2072	"ortho" {
2073	if {$_view(ortho)} {
2074	SendCmd "camera mode ortho"
2075	} else {
2076	SendCmd "camera mode persp"
2077	}
2078	}
2079	"xpan" - "ypan" {
2080	PanCamera
2081	}
2082	"qx" - "qy" - "qz" - "qw" {
2083	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2084	$_arcball quaternion $q
2085	EventuallyRotate $q
2086	}
2087	"zoom" {
2088	SendCmd "camera zoom $_view(zoom)"
2089	}
2090	}
2091	}
2092	}
2093	}
2094
2095	itcl::body Rappture::VtkStreamlinesViewer::ConvertToVtkData { dataobj comp } {
2096	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
2097	set values [$dataobj values $comp]
2098	append out "# vtk DataFile Version 2.0 \n"
2099	append out "Test data \n"
2100	append out "ASCII \n"
2101	append out "DATASET STRUCTURED_POINTS \n"
2102	append out "DIMENSIONS $xN $yN 1 \n"
2103	append out "ORIGIN 0 0 0 \n"
2104	append out "SPACING 1 1 1 \n"
2105	append out "POINT_DATA [expr $xN * $yN] \n"
2106	append out "SCALARS field float 1 \n"
2107	append out "LOOKUP_TABLE default \n"
2108	append out [join $values "\n"]
2109	append out "\n"
2110	return $out
2111	}
2112
2113
2114	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2115	set bytes ""
2116	foreach dataobj [get] {
2117	foreach comp [$dataobj components] {
2118	set tag $dataobj-$comp
2119	#set contents [ConvertToVtkData $dataobj $comp]
2120	set contents [$dataobj blob $comp]
2121	append bytes "$contents\n\n"
2122	}
2123	}
2124	return [list .vtk $bytes]
2125	}
2126
2127	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2128	if { [image width $_image(download)] > 0 &&
2129	[image height $_image(download)] > 0 } {
2130	set bytes [$_image(download) data -format "jpeg -quality 100"]
2131	set bytes [Rappture::encoding::decode -as b64 $bytes]
2132	return [list .jpg $bytes]
2133	}
2134	return ""
2135	}
2136
2137	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2138	Rappture::Balloon $popup \
2139	-title "[Rappture::filexfer::label downloadWord] as..."
2140	set inner [$popup component inner]
2141	label $inner.summary -text "" -anchor w
2142	radiobutton $inner.vtk_button -text "VTK data file" \
2143	-variable [itcl::scope _downloadPopup(format)] \
2144	-font "Helvetica 9 " \
2145	-value vtk
2146	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2147	radiobutton $inner.image_button -text "Image File" \
2148	-variable [itcl::scope _downloadPopup(format)] \
2149	-value image
2150	Rappture::Tooltip::for $inner.image_button \
2151	"Save as digital image."
2152
2153	button $inner.ok -text "Save" \
2154	-highlightthickness 0 -pady 2 -padx 3 \
2155	-command $command \
2156	-compound left \
2157	-image [Rappture::icon download]
2158
2159	button $inner.cancel -text "Cancel" \
2160	-highlightthickness 0 -pady 2 -padx 3 \
2161	-command [list $popup deactivate] \
2162	-compound left \
2163	-image [Rappture::icon cancel]
2164
2165	blt::table $inner \
2166	0,0 $inner.summary -cspan 2 \
2167	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2168	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2169	4,1 $inner.cancel -width .9i -fill y \
2170	4,0 $inner.ok -padx 2 -width .9i -fill y
2171	blt::table configure $inner r3 -height 4
2172	blt::table configure $inner r4 -pady 4
2173	raise $inner.image_button
2174	$inner.vtk_button invoke
2175	return $inner
2176	}
2177
2178	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2179	# Parse style string.
2180	set tag $dataobj-$comp
2181	set style [$dataobj style $comp]
2182	array set settings {
2183	-color \#808080
2184	-edges 0
2185	-edgecolor black
2186	-linewidth 1.0
2187	-opacity 0.4
2188	-wireframe 0
2189	-lighting 1
2190	-seeds 1
2191	-seedcolor white
2192	-visible 1
2193	}
2194	if { $dataobj != $_first } {
2195	set settings(-opacity) 1
2196	}
2197	array set settings $style
2198	SendCmd "streamlines add $tag"
2199	SendCmd "streamlines seed visible off $tag"
2200	set seeds [$dataobj hints seeds]
2201	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2202	set length [string length $seeds]
2203	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2204	SendCmd "$seeds"
2205	set _seeds($dataobj) 1
2206	}
2207	SendCmd "cutplane add $tag"
2208	SendCmd "polydata add $tag"
2209	set _settings(volumeEdges) $settings(-edges)
2210	set _settings(volumeLighting) $settings(-lighting)
2211	set _settings(volumeOpacity) $settings(-opacity)
2212	set _settings(volumeWireframe) $settings(-wireframe)
2213	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2214	SetColormap $dataobj $comp
2215	}
2216
2217	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2218	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2219	return 0
2220	}
2221	return 1
2222	}
2223
2224	# ----------------------------------------------------------------------
2225	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2226	#
2227	# Invoked automatically whenever the "legend" command comes in from
2228	# the rendering server. Indicates that binary image data with the
2229	# specified <size> will follow.
2230	# ----------------------------------------------------------------------
2231	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2232	set _legendPending 0
2233	set _title $title
2234	regsub {\(mag\)} $title "" _title
2235	if { [IsConnected] } {
2236	set bytes [ReceiveBytes $size]
2237	if { ![info exists _image(legend)] } {
2238	set _image(legend) [image create photo]
2239	}
2240	$_image(legend) configure -data $bytes
2241	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2242	if { [catch {DrawLegend} errs] != 0 } {
2243	puts stderr errs=$errs
2244	}
2245	}
2246	}
2247
2248	#
2249	# DrawLegend --
2250	#
2251	# Draws the legend in it's own canvas which resides to the right
2252	# of the contour plot area.
2253	#
2254	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2255	set fname $_curFldName
2256	set c $itk_component(view)
2257	set w [winfo width $c]
2258	set h [winfo height $c]
2259	set font "Arial 8"
2260	set lineht [font metrics $font -linespace]
2261
2262	if { [info exists _fields($fname)] } {
2263	foreach { title units } $_fields($fname) break
2264	if { $units != "" } {
2265	set title [format "%s (%s)" $title $units]
2266	}
2267	} else {
2268	set title $fname
2269	}
2270	if { $_settings(legendVisible) } {
2271	set x [expr $w - 2]
2272	if { [$c find withtag "legend"] == "" } {
2273	set y 2
2274	$c create text $x $y \
2275	-anchor ne \
2276	-fill $itk_option(-plotforeground) -tags "title legend" \
2277	-font $font
2278	incr y $lineht
2279	$c create text $x $y \
2280	-anchor ne \
2281	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2282	-font $font
2283	incr y $lineht
2284	$c create image $x $y \
2285	-anchor ne \
2286	-image $_image(legend) -tags "colormap legend"
2287	$c create text $x [expr {$h-2}] \
2288	-anchor se \
2289	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2290	-font $font
2291	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2292	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2293	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2294	}
2295	$c bind title <ButtonPress> [itcl::code $this Combo post]
2296	$c bind title <Enter> [itcl::code $this Combo activate]
2297	$c bind title <Leave> [itcl::code $this Combo deactivate]
2298	# Reset the item coordinates according the current size of the plot.
2299	$c itemconfigure title -text $title
2300	if { [info exists _limits($_curFldName)] } {
2301	foreach {vmin vmax} $_limits($_curFldName) break
2302	$c itemconfigure vmin -text [format %g $vmin]
2303	$c itemconfigure vmax -text [format %g $vmax]
2304	}
2305	set y 2
2306	$c coords title $x $y
2307	incr y $lineht
2308	$c coords vmax $x $y
2309	incr y $lineht
2310	$c coords colormap $x $y
2311	$c coords vmin $x [expr {$h - 2}]
2312	}
2313	}
2314
2315	#
2316	# EnterLegend --
2317	#
2318	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2319	SetLegendTip $x $y
2320	}
2321
2322	#
2323	# MotionLegend --
2324	#
2325	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2326	Rappture::Tooltip::tooltip cancel
2327	set c $itk_component(view)
2328	SetLegendTip $x $y
2329	}
2330
2331	#
2332	# LeaveLegend --
2333	#
2334	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2335	Rappture::Tooltip::tooltip cancel
2336	.rappturetooltip configure -icon ""
2337	}
2338
2339	#
2340	# SetLegendTip --
2341	#
2342	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2343	set c $itk_component(view)
2344	set w [winfo width $c]
2345	set h [winfo height $c]
2346	set font "Arial 8"
2347	set lineht [font metrics $font -linespace]
2348
2349	set imgHeight [image height $_image(legend)]
2350	set coords [$c coords colormap]
2351	set imgX [expr $w - [image width $_image(legend)] - 2]
2352	set imgY [expr $y - 2 * ($lineht + 2)]
2353
2354	if { [info exists _fields($_title)] } {
2355	foreach { title units } $_fields($_title) break
2356	if { $units != "" } {
2357	set title [format "%s (%s)" $title $units]
2358	}
2359	} else {
2360	set title $_title
2361	}
2362	# Make a swatch of the selected color
2363	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2364	#puts stderr "out of range: $imgY"
2365	return
2366	}
2367	if { ![info exists _image(swatch)] } {
2368	set _image(swatch) [image create photo -width 24 -height 24]
2369	}
2370	set color [eval format "\#%02x%02x%02x" $pixel]
2371	$_image(swatch) put black -to 0 0 23 23
2372	$_image(swatch) put $color -to 1 1 22 22
2373	.rappturetooltip configure -icon $_image(swatch)
2374
2375	# Compute the value of the point
2376	if { [info exists _limits($_curFldName)] } {
2377	foreach {vmin vmax} $_limits($_curFldName) break
2378	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2379	set value [expr $t * ($vmax - $vmin) + $vmin]
2380	} else {
2381	set value 0.0
2382	}
2383	set tipx [expr $x + 15]
2384	set tipy [expr $y - 5]
2385	Rappture::Tooltip::text $c "$title $value"
2386	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2387	}
2388
2389
2390	# ----------------------------------------------------------------------
2391	# USAGE: Slice move x\|y\|z <newval>
2392	#
2393	# Called automatically when the user drags the slider to move the
2394	# cut plane that slices 3D data. Gets the current value from the
2395	# slider and moves the cut plane to the appropriate point in the
2396	# data set.
2397	# ----------------------------------------------------------------------
2398	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2399	switch -- $option {
2400	"move" {
2401	set axis [lindex $args 0]
2402	set oldval $_settings(axis-${axis}position)
2403	set newval [lindex $args 1]
2404	if {[llength $args] != 2} {
2405	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2406	}
2407	set newpos [expr {0.01*$newval}]
2408	SendCmd "cutplane slice $axis $newpos"
2409	}
2410	"tooltip" {
2411	set axis [lindex $args 0]
2412	set val [$itk_component(${axis}CutScale) get]
2413	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2414	}
2415	default {
2416	error "bad option \"$option\": should be axis, move, or tooltip"
2417	}
2418	}
2419	}
2420
2421
2422	# ----------------------------------------------------------------------
2423	# USAGE: _dropdown post
2424	# USAGE: _dropdown unpost
2425	# USAGE: _dropdown select
2426	#
2427	# Used internally to handle the dropdown list for this combobox. The
2428	# post/unpost options are invoked when the list is posted or unposted
2429	# to manage the relief of the controlling button. The select option
2430	# is invoked whenever there is a selection from the list, to assign
2431	# the value back to the gauge.
2432	# ----------------------------------------------------------------------
2433	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2434	set c $itk_component(view)
2435	switch -- $option {
2436	post {
2437	foreach { x1 y1 x2 y2 } [$c bbox title] break
2438	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2439	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2440	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2441	tk_popup $itk_component(fieldmenu) $x $y
2442	}
2443	activate {
2444	$c itemconfigure title -fill red
2445	}
2446	deactivate {
2447	$c itemconfigure title -fill white
2448	}
2449	invoke {
2450	$itk_component(field) value $_curFldLabel
2451	AdjustSetting field
2452	}
2453	default {
2454	error "bad option \"$option\": should be post, unpost, select"
2455	}
2456	}
2457	}
2458
2459	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2460	array set positions {
2461	front "1 0 0 0"
2462	back "0 0 1 0"
2463	left "0.707107 0 -0.707107 0"
2464	right "0.707107 0 0.707107 0"
2465	top "0.707107 -0.707107 0 0"
2466	bottom "0.707107 0.707107 0 0"
2467	}
2468	foreach name { qw qx qy qz } value $positions($side) {
2469	set _view($name) $value
2470	}
2471	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2472	$_arcball quaternion $q
2473	SendCmd "camera orient $q"
2474	SendCmd "camera reset"
2475	set _view(xpan) 0
2476	set _view(ypan) 0
2477	set _view(zoom) 1.0
2478	}
2479

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