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source: branches/1.3/gui/scripts/vtkstreamlinesviewer.tcl @ 3765

Last change on this file since 3765 was 3765, checked in by gah, 11 years ago
fix drawing default coordinates, rewrite of xyresult scaling, sync with trunk
File size: 83.7 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 _outline
145	private variable _vectorFields
146	private variable _scalarFields
147	private variable _fields
148	private variable _curFldName ""
149	private variable _curFldLabel ""
150	private variable _field ""
151	private variable _numSeeds 200
152	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
153	}
154
155	itk::usual VtkStreamlinesViewer {
156	keep -background -foreground -cursor -font
157	keep -plotbackground -plotforeground
158	}
159
160	# ----------------------------------------------------------------------
161	# CONSTRUCTOR
162	# ----------------------------------------------------------------------
163	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
164	package require vtk
165	set _serverType "vtkvis"
166
167	EnableWaitDialog 2000
168
169	# Rebuild event
170	$_dispatcher register !rebuild
171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
172
173	# Resize event
174	$_dispatcher register !resize
175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
176
177	# Reseed event
178	$_dispatcher register !reseed
179	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
180
181	# Rotate event
182	$_dispatcher register !rotate
183	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
184
185	# Legend event
186	$_dispatcher register !legend
187	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
188
189	# X-Cutplane event
190	$_dispatcher register !xcutplane
191	$_dispatcher dispatch $this !xcutplane \
192	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
193
194	# Y-Cutplane event
195	$_dispatcher register !ycutplane
196	$_dispatcher dispatch $this !ycutplane \
197	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
198
199	# Z-Cutplane event
200	$_dispatcher register !zcutplane
201	$_dispatcher dispatch $this !zcutplane \
202	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
203
204	#
205	# Populate parser with commands handle incoming requests
206	#
207	$_parser alias image [itcl::code $this ReceiveImage]
208	$_parser alias dataset [itcl::code $this ReceiveDataset]
209	$_parser alias legend [itcl::code $this ReceiveLegend]
210
211	array set _outline {
212	id -1
213	afterId -1
214	x1 -1
215	y1 -1
216	x2 -1
217	y2 -1
218	}
219	# Initialize the view to some default parameters.
220	array set _view {
221	qw 0.853553
222	qx -0.353553
223	qy 0.353553
224	qz 0.146447
225	zoom 1.0
226	xpan 0
227	ypan 0
228	ortho 0
229	}
230	set _arcball [blt::arcball create 100 100]
231	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
232	$_arcball quaternion $q
233
234	array set _settings [subst {
235	axesVisible 1
236	axisLabelsVisible 1
237	axisXGrid 0
238	axisYGrid 0
239	axisZGrid 0
240	cutplaneEdges 0
241	cutplaneLighting 1
242	cutplaneOpacity 100
243	cutplaneVisible 0
244	cutplaneWireframe 0
245	cutplaneXPosition 50
246	cutplaneXVisible 1
247	cutplaneYPosition 50
248	cutplaneYVisible 1
249	cutplaneZPosition 50
250	cutplaneZVisible 1
251	legendVisible 1
252	streamlinesLighting 1
253	streamlinesMode lines
254	streamlinesNumSeeds 200
255	streamlinesOpacity 100
256	streamlinesScale 1
257	streamlinesSeedsVisible 0
258	streamlinesVisible 1
259	volumeEdges 0
260	volumeLighting 1
261	volumeOpacity 40
262	volumeVisible 1
263	volumeWireframe 0
264	}]
265
266	itk_component add view {
267	canvas $itk_component(plotarea).view \
268	-highlightthickness 0 -borderwidth 0
269	} {
270	usual
271	ignore -highlightthickness -borderwidth -background
272	}
273
274	itk_component add fieldmenu {
275	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
276	-tearoff no
277	} {
278	usual
279	ignore -background -foreground -relief -tearoff
280	}
281	set c $itk_component(view)
282	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
283	bind $c <4> [itcl::code $this Zoom in 0.25]
284	bind $c <5> [itcl::code $this Zoom out 0.25]
285	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
286	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
287	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
288	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
289	bind $c <Enter> "focus %W"
290	bind $c <Control-F1> [itcl::code $this ToggleConsole]
291
292	# Fix the scrollregion in case we go off screen
293	$c configure -scrollregion [$c bbox all]
294
295	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
296	set _map(cwidth) -1
297	set _map(cheight) -1
298	set _map(zoom) 1.0
299	set _map(original) ""
300
301	set f [$itk_component(main) component controls]
302	itk_component add reset {
303	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
304	-highlightthickness 0 \
305	-image [Rappture::icon reset-view] \
306	-command [itcl::code $this Zoom reset]
307	} {
308	usual
309	ignore -highlightthickness
310	}
311	pack $itk_component(reset) -side top -padx 2 -pady 2
312	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
313
314	itk_component add zoomin {
315	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
316	-highlightthickness 0 \
317	-image [Rappture::icon zoom-in] \
318	-command [itcl::code $this Zoom in]
319	} {
320	usual
321	ignore -highlightthickness
322	}
323	pack $itk_component(zoomin) -side top -padx 2 -pady 2
324	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
325
326	itk_component add zoomout {
327	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
328	-highlightthickness 0 \
329	-image [Rappture::icon zoom-out] \
330	-command [itcl::code $this Zoom out]
331	} {
332	usual
333	ignore -highlightthickness
334	}
335	pack $itk_component(zoomout) -side top -padx 2 -pady 2
336	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
337
338	itk_component add volume {
339	Rappture::PushButton $f.volume \
340	-onimage [Rappture::icon volume-on] \
341	-offimage [Rappture::icon volume-off] \
342	-variable [itcl::scope _settings(volumeVisible)] \
343	-command [itcl::code $this AdjustSetting volumeVisible]
344	}
345	$itk_component(volume) select
346	Rappture::Tooltip::for $itk_component(volume) \
347	"Don't display the volume"
348	pack $itk_component(volume) -padx 2 -pady 2
349
350	itk_component add streamlines {
351	Rappture::PushButton $f.streamlines \
352	-onimage [Rappture::icon streamlines-on] \
353	-offimage [Rappture::icon streamlines-off] \
354	-variable [itcl::scope _settings(streamlinesVisible)] \
355	-command [itcl::code $this AdjustSetting streamlinesVisible] \
356	}
357	$itk_component(streamlines) select
358	Rappture::Tooltip::for $itk_component(streamlines) \
359	"Toggle the streamlines on/off"
360	pack $itk_component(streamlines) -padx 2 -pady 2
361
362	itk_component add cutplane {
363	Rappture::PushButton $f.cutplane \
364	-onimage [Rappture::icon cutbutton] \
365	-offimage [Rappture::icon cutbutton] \
366	-variable [itcl::scope _settings(cutplaneVisible)] \
367	-command [itcl::code $this AdjustSetting cutplaneVisible]
368	}
369	Rappture::Tooltip::for $itk_component(cutplane) \
370	"Show/Hide cutplanes"
371	pack $itk_component(cutplane) -padx 2 -pady 2
372
373
374	if { [catch {
375	BuildVolumeTab
376	BuildStreamsTab
377	BuildCutplaneTab
378	BuildAxisTab
379	BuildCameraTab
380	} errs] != 0 } {
381	puts stderr errs=$errs
382	}
383	# Legend
384
385	set _image(legend) [image create photo]
386	itk_component add legend {
387	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
388	} {
389	usual
390	ignore -highlightthickness
391	rename -background -plotbackground plotBackground Background
392	}
393
394	# Hack around the Tk panewindow. The problem is that the requested
395	# size of the 3d view isn't set until an image is retrieved from
396	# the server. So the panewindow uses the tiny size.
397	set w 10000
398	pack forget $itk_component(view)
399	blt::table $itk_component(plotarea) \
400	0,0 $itk_component(view) -fill both -reqwidth $w
401	blt::table configure $itk_component(plotarea) c1 -resize none
402
403	# Bindings for rotation via mouse
404	bind $itk_component(view) <ButtonPress-1> \
405	[itcl::code $this Rotate click %x %y]
406	bind $itk_component(view) <B1-Motion> \
407	[itcl::code $this Rotate drag %x %y]
408	bind $itk_component(view) <ButtonRelease-1> \
409	[itcl::code $this Rotate release %x %y]
410	bind $itk_component(view) <Configure> \
411	[itcl::code $this EventuallyResize %w %h]
412
413	if 0 {
414	bind $itk_component(view) <Configure> \
415	[itcl::code $this EventuallyResize %w %h]
416	}
417	# Bindings for panning via mouse
418	bind $itk_component(view) <ButtonPress-2> \
419	[itcl::code $this Pan click %x %y]
420	bind $itk_component(view) <B2-Motion> \
421	[itcl::code $this Pan drag %x %y]
422	bind $itk_component(view) <ButtonRelease-2> \
423	[itcl::code $this Pan release %x %y]
424
425	#bind $itk_component(view) <ButtonRelease-3> \
426	# [itcl::code $this Pick %x %y]
427
428	# Bindings for panning via keyboard
429	bind $itk_component(view) <KeyPress-Left> \
430	[itcl::code $this Pan set -10 0]
431	bind $itk_component(view) <KeyPress-Right> \
432	[itcl::code $this Pan set 10 0]
433	bind $itk_component(view) <KeyPress-Up> \
434	[itcl::code $this Pan set 0 -10]
435	bind $itk_component(view) <KeyPress-Down> \
436	[itcl::code $this Pan set 0 10]
437	bind $itk_component(view) <Shift-KeyPress-Left> \
438	[itcl::code $this Pan set -2 0]
439	bind $itk_component(view) <Shift-KeyPress-Right> \
440	[itcl::code $this Pan set 2 0]
441	bind $itk_component(view) <Shift-KeyPress-Up> \
442	[itcl::code $this Pan set 0 -2]
443	bind $itk_component(view) <Shift-KeyPress-Down> \
444	[itcl::code $this Pan set 0 2]
445
446	# Bindings for zoom via keyboard
447	bind $itk_component(view) <KeyPress-Prior> \
448	[itcl::code $this Zoom out]
449	bind $itk_component(view) <KeyPress-Next> \
450	[itcl::code $this Zoom in]
451
452	bind $itk_component(view) <Enter> "focus $itk_component(view)"
453
454	if {[string equal "x11" [tk windowingsystem]]} {
455	# Bindings for zoom via mouse
456	bind $itk_component(view) <4> [itcl::code $this Zoom out]
457	bind $itk_component(view) <5> [itcl::code $this Zoom in]
458	}
459
460	set _image(download) [image create photo]
461
462	eval itk_initialize $args
463	Connect
464	update
465	}
466
467	# ----------------------------------------------------------------------
468	# DESTRUCTOR
469	# ----------------------------------------------------------------------
470	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
471	Disconnect
472	image delete $_image(plot)
473	image delete $_image(download)
474	catch { blt::arcball destroy $_arcball }
475	}
476
477	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
478	if { $_width < 2 } {
479	set _width 500
480	}
481	if { $_height < 2 } {
482	set _height 500
483	}
484	set _start [clock clicks -milliseconds]
485	SendCmd "screen size $_width $_height"
486
487	set _legendPending 1
488	set _resizePending 0
489	}
490
491	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
492	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
493	SendCmd "camera orient $q"
494	set _rotatePending 0
495	}
496
497	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
498	foreach dataset [CurrentDatasets -visible] {
499	foreach {dataobj comp} [split $dataset -] break
500	# This command works for either random or fmesh seeds
501	SendCmd "streamlines seed numpts $_numSeeds $dataset"
502	}
503	set _reseedPending 0
504	}
505
506	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
507	set _width $w
508	set _height $h
509	$_arcball resize $w $h
510	if { !$_resizePending } {
511	set _resizePending 1
512	$_dispatcher event -after 400 !resize
513	}
514	}
515
516	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
517	set _numSeeds $numPoints
518	if { !$_reseedPending } {
519	set _reseedPending 1
520	$_dispatcher event -after 600 !reseed
521	}
522	}
523
524	set rotate_delay 100
525
526	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
527	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
528	if { !$_rotatePending } {
529	set _rotatePending 1
530	global rotate_delay
531	$_dispatcher event -after $rotate_delay !rotate
532	}
533	}
534
535	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
536	if { !$_cutplanePending } {
537	set _cutplanePending 1
538	$_dispatcher event -after 100 !${axis}cutplane
539	}
540	}
541
542	# ----------------------------------------------------------------------
543	# USAGE: add <dataobj> ?<settings>?
544	#
545	# Clients use this to add a data object to the plot. The optional
546	# <settings> are used to configure the plot. Allowed settings are
547	# -color, -brightness, -width, -linestyle, and -raise.
548	# ----------------------------------------------------------------------
549	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
550	array set params {
551	-color auto
552	-width 1
553	-linestyle solid
554	-brightness 0
555	-raise 0
556	-description ""
557	-param ""
558	-type ""
559	}
560	array set params $settings
561	set params(-description) ""
562	set params(-param) ""
563	foreach {opt val} $settings {
564	if {![info exists params($opt)]} {
565	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
566	}
567	set params($opt) $val
568	}
569	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
570	# can't handle -autocolors yet
571	set params(-color) black
572	}
573	set pos [lsearch -exact $dataobj $_dlist]
574	if {$pos < 0} {
575	lappend _dlist $dataobj
576	}
577	set _obj2ovride($dataobj-color) $params(-color)
578	set _obj2ovride($dataobj-width) $params(-width)
579	set _obj2ovride($dataobj-raise) $params(-raise)
580	$_dispatcher event -idle !rebuild
581	}
582
583
584	# ----------------------------------------------------------------------
585	# USAGE: delete ?<dataobj1> <dataobj2> ...?
586	#
587	# Clients use this to delete a dataobj from the plot. If no dataobjs
588	# are specified, then all dataobjs are deleted. No data objects are
589	# deleted. They are only removed from the display list.
590	#
591	# ----------------------------------------------------------------------
592	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
593	if { [llength $args] == 0} {
594	set args $_dlist
595	}
596	# Delete all specified dataobjs
597	set changed 0
598	foreach dataobj $args {
599	set pos [lsearch -exact $_dlist $dataobj]
600	if { $pos < 0 } {
601	continue; # Don't know anything about it.
602	}
603	# Remove it from the dataobj list.
604	set _dlist [lreplace $_dlist $pos $pos]
605	array unset _obj2ovride $dataobj-*
606	array unset _settings $dataobj-*
607	# Append to the end of the dataobj list.
608	lappend _dlist $dataobj
609	set changed 1
610	}
611	# If anything changed, then rebuild the plot
612	if { $changed } {
613	$_dispatcher event -idle !rebuild
614	}
615	}
616
617	# ----------------------------------------------------------------------
618	# USAGE: get ?-objects?
619	# USAGE: get ?-visible?
620	# USAGE: get ?-image view?
621	#
622	# Clients use this to query the list of objects being plotted, in
623	# order from bottom to top of this result. The optional "-image"
624	# flag can also request the internal images being shown.
625	# ----------------------------------------------------------------------
626	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
627	if {[llength $args] == 0} {
628	set args "-objects"
629	}
630
631	set op [lindex $args 0]
632	switch -- $op {
633	"-objects" {
634	# put the dataobj list in order according to -raise options
635	set dlist {}
636	foreach dataobj $_dlist {
637	if { ![IsValidObject $dataobj] } {
638	continue
639	}
640	if {[info exists _obj2ovride($dataobj-raise)] &&
641	$_obj2ovride($dataobj-raise)} {
642	set dlist [linsert $dlist 0 $dataobj]
643	} else {
644	lappend dlist $dataobj
645	}
646	}
647	return $dlist
648	}
649	"-visible" {
650	set dlist {}
651	foreach dataobj $_dlist {
652	if { ![IsValidObject $dataobj] } {
653	continue
654	}
655	if { ![info exists _obj2ovride($dataobj-raise)] } {
656	# No setting indicates that the object isn't visible.
657	continue
658	}
659	# Otherwise use the -raise parameter to put the object to
660	# the front of the list.
661	if { $_obj2ovride($dataobj-raise) } {
662	set dlist [linsert $dlist 0 $dataobj]
663	} else {
664	lappend dlist $dataobj
665	}
666	}
667	return $dlist
668	}
669	-image {
670	if {[llength $args] != 2} {
671	error "wrong # args: should be \"get -image view\""
672	}
673	switch -- [lindex $args end] {
674	view {
675	return $_image(plot)
676	}
677	default {
678	error "bad image name \"[lindex $args end]\": should be view"
679	}
680	}
681	}
682	default {
683	error "bad option \"$op\": should be -objects or -image"
684	}
685	}
686	}
687
688	# ----------------------------------------------------------------------
689	# USAGE: scale ?<data1> <data2> ...?
690	#
691	# Sets the default limits for the overall plot according to the
692	# limits of the data for all of the given <data> objects. This
693	# accounts for all objects--even those not showing on the screen.
694	# Because of this, the limits are appropriate for all objects as
695	# the user scans through data in the ResultSet viewer.
696	# ----------------------------------------------------------------------
697	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
698	foreach dataobj $args {
699	foreach axis { x y z } {
700	set lim [$dataobj limits $axis]
701	if { ![info exists _limits($axis)] } {
702	set _limits($axis) $lim
703	continue
704	}
705	foreach {min max} $lim break
706	foreach {amin amax} $_limits($axis) break
707	if { $amin > $min } {
708	set amin $min
709	}
710	if { $amax < $max } {
711	set amax $max
712	}
713	set _limits($axis) [list $amin $amax]
714	}
715	foreach { fname lim } [$dataobj fieldlimits] {
716	if { ![info exists _limits($fname)] } {
717	set _limits($fname) $lim
718	continue
719	}
720	foreach {min max} $lim break
721	foreach {fmin fmax} $_limits($fname) break
722	if { $fmin > $min } {
723	set fmin $min
724	}
725	if { $fmax < $max } {
726	set fmax $max
727	}
728	set _limits($fname) [list $fmin $fmax]
729	}
730	}
731	}
732
733	# ----------------------------------------------------------------------
734	# USAGE: download coming
735	# USAGE: download controls <downloadCommand>
736	# USAGE: download now
737	#
738	# Clients use this method to create a downloadable representation
739	# of the plot. Returns a list of the form {ext string}, where
740	# "ext" is the file extension (indicating the type of data) and
741	# "string" is the data itself.
742	# ----------------------------------------------------------------------
743	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
744	switch $option {
745	coming {
746	if {[catch {
747	blt::winop snap $itk_component(plotarea) $_image(download)
748	}]} {
749	$_image(download) configure -width 1 -height 1
750	$_image(download) put #000000
751	}
752	}
753	controls {
754	set popup .vtkviewerdownload
755	if { ![winfo exists .vtkviewerdownload] } {
756	set inner [BuildDownloadPopup $popup [lindex $args 0]]
757	} else {
758	set inner [$popup component inner]
759	}
760	set _downloadPopup(image_controls) $inner.image_frame
761	set num [llength [get]]
762	set num [expr {($num == 1) ? "1 result" : "$num results"}]
763	set word [Rappture::filexfer::label downloadWord]
764	$inner.summary configure -text "$word $num in the following format:"
765	update idletasks ;# Fix initial sizes
766	return $popup
767	}
768	now {
769	set popup .vtkviewerdownload
770	if {[winfo exists .vtkviewerdownload]} {
771	$popup deactivate
772	}
773	switch -- $_downloadPopup(format) {
774	"image" {
775	return [$this GetImage [lindex $args 0]]
776	}
777	"vtk" {
778	return [$this GetVtkData [lindex $args 0]]
779	}
780	}
781	return ""
782	}
783	default {
784	error "bad option \"$option\": should be coming, controls, now"
785	}
786	}
787	}
788
789	# ----------------------------------------------------------------------
790	# USAGE: Connect ?<host:port>,<host:port>...?
791	#
792	# Clients use this method to establish a connection to a new
793	# server, or to reestablish a connection to the previous server.
794	# Any existing connection is automatically closed.
795	# ----------------------------------------------------------------------
796	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
797	set _hosts [GetServerList "vtkvis"]
798	if { "" == $_hosts } {
799	return 0
800	}
801	set result [VisViewer::Connect $_hosts]
802	if { $result } {
803	if { $_reportClientInfo } {
804	# Tell the server the viewer, hub, user and session.
805	# Do this immediately on connect before buffing any commands
806	global env
807
808	set info {}
809	set user "???"
810	if { [info exists env(USER)] } {
811	set user $env(USER)
812	}
813	set session "???"
814	if { [info exists env(SESSION)] } {
815	set session $env(SESSION)
816	}
817	lappend info "hub" [exec hostname]
818	lappend info "client" "vtkstreamlinesviewer"
819	lappend info "user" $user
820	lappend info "session" $session
821	SendCmd "clientinfo [list $info]"
822	}
823
824	set w [winfo width $itk_component(view)]
825	set h [winfo height $itk_component(view)]
826	EventuallyResize $w $h
827	}
828	return $result
829	}
830
831	#
832	# isconnected --
833	#
834	# Indicates if we are currently connected to the visualization server.
835	#
836	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
837	return [VisViewer::IsConnected]
838	}
839
840	#
841	# disconnect --
842	#
843	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
844	Disconnect
845	set _reset 1
846	}
847
848	#
849	# Disconnect --
850	#
851	# Clients use this method to disconnect from the current rendering
852	# server.
853	#
854	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
855	VisViewer::Disconnect
856
857	$_dispatcher cancel !rebuild
858	$_dispatcher cancel !resize
859	$_dispatcher cancel !reseed
860	$_dispatcher cancel !rotate
861	$_dispatcher cancel !xcutplane
862	$_dispatcher cancel !ycutplane
863	$_dispatcher cancel !zcutplane
864	$_dispatcher cancel !legend
865	# disconnected -- no more data sitting on server
866	array unset _datasets
867	array unset _data
868	array unset _colormaps
869	array unset _seeds
870	array unset _dataset2style
871	array unset _obj2datasets
872	}
873
874	# ----------------------------------------------------------------------
875	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
876	#
877	# Invoked automatically whenever the "image" command comes in from
878	# the rendering server. Indicates that binary image data with the
879	# specified <size> will follow.
880	# ----------------------------------------------------------------------
881	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
882	array set info {
883	-token "???"
884	-bytes 0
885	-type image
886	}
887	array set info $args
888	set bytes [ReceiveBytes $info(-bytes)]
889	if { $info(-type) == "image" } {
890	if 0 {
891	set f [open "last.ppm" "w"]
892	puts $f $bytes
893	close $f
894	}
895	$_image(plot) configure -data $bytes
896	set time [clock seconds]
897	set date [clock format $time]
898	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
899	if { $_start > 0 } {
900	set finish [clock clicks -milliseconds]
901	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
902	set _start 0
903	}
904	} elseif { $info(type) == "print" } {
905	set tag $this-print-$info(-token)
906	set _hardcopy($tag) $bytes
907	}
908	if { $_legendPending } {
909	RequestLegend
910	}
911	}
912
913	#
914	# ReceiveDataset --
915	#
916	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
917	if { ![isconnected] } {
918	return
919	}
920	set option [lindex $args 0]
921	switch -- $option {
922	"scalar" {
923	set option [lindex $args 1]
924	switch -- $option {
925	"world" {
926	foreach { x y z value tag } [lrange $args 2 end] break
927	}
928	"pixel" {
929	foreach { x y value tag } [lrange $args 2 end] break
930	}
931	}
932	}
933	"vector" {
934	set option [lindex $args 1]
935	switch -- $option {
936	"world" {
937	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
938	}
939	"pixel" {
940	foreach { x y vx vy vz tag } [lrange $args 2 end] break
941	}
942	}
943	}
944	"names" {
945	foreach { name } [lindex $args 1] {
946	#puts stderr "Dataset: $name"
947	}
948	}
949	default {
950	error "unknown dataset option \"$option\" from server"
951	}
952	}
953	}
954
955	# ----------------------------------------------------------------------
956	# USAGE: Rebuild
957	#
958	# Called automatically whenever something changes that affects the
959	# data in the widget. Clears any existing data and rebuilds the
960	# widget to display new data.
961	# ----------------------------------------------------------------------
962	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
963	update
964	set w [winfo width $itk_component(view)]
965	set h [winfo height $itk_component(view)]
966	if { $w < 2 \|\| $h < 2 } {
967	$_dispatcher event -idle !rebuild
968	return
969	}
970
971	# Turn on buffering of commands to the server. We don't want to
972	# be preempted by a server disconnect/reconnect (which automatically
973	# generates a new call to Rebuild).
974	StartBufferingCommands
975	set _legendPending 1
976
977	set _first ""
978	if { $_reset } {
979	set _width $w
980	set _height $h
981	$_arcball resize $w $h
982	DoResize
983	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
984	axesVisible axisLabelsVisible
985	# This "imgflush" is to force an image returned before vtkvis starts
986	# reading a (big) dataset. This will display an empty plot with axes
987	# at the correct image size.
988	SendCmd "imgflush"
989	}
990
991	set _first ""
992	SendCmd "dataset visible 0"
993	foreach dataobj [get -objects] {
994	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
995	set _first $dataobj
996	}
997	set _obj2datasets($dataobj) ""
998	foreach comp [$dataobj components] {
999	set tag $dataobj-$comp
1000	if { ![info exists _datasets($tag)] } {
1001	set bytes [$dataobj vtkdata $comp]
1002	set length [string length $bytes]
1003	if 0 {
1004	set f [open /tmp/vtkstreamlines.vtk "w"]
1005	fconfigure $f -translation binary -encoding binary
1006	puts $f $bytes
1007	close $f
1008	}
1009	if { $_reportClientInfo } {
1010	set info {}
1011	lappend info "tool_id" [$dataobj hints toolId]
1012	lappend info "tool_name" [$dataobj hints toolName]
1013	lappend info "tool_version" [$dataobj hints toolRevision]
1014	lappend info "tool_title" [$dataobj hints toolTitle]
1015	lappend info "dataset_label" [$dataobj hints label]
1016	lappend info "dataset_size" $length
1017	lappend info "dataset_tag" $tag
1018	SendCmd "clientinfo [list $info]"
1019	}
1020	SendCmd "dataset add $tag data follows $length"
1021	append _outbuf $bytes
1022	set _datasets($tag) 1
1023	SetObjectStyle $dataobj $comp
1024	}
1025	lappend _obj2datasets($dataobj) $tag
1026	if { [info exists _obj2ovride($dataobj-raise)] } {
1027	SendCmd "dataset visible 1 $tag"
1028	}
1029	}
1030	}
1031	if {"" != $_first} {
1032	set location [$_first hints camera]
1033	if { $location != "" } {
1034	array set view $location
1035	}
1036	foreach axis { x y z } {
1037	set label [$_first hints ${axis}label]
1038	if { $label != "" } {
1039	SendCmd "axis name $axis $label"
1040	}
1041	set units [$_first hints ${axis}units]
1042	if { $units != "" } {
1043	SendCmd "axis units $axis $units"
1044	}
1045	}
1046	$itk_component(field) choices delete 0 end
1047	$itk_component(fieldmenu) delete 0 end
1048	array unset _fields
1049	set _curFldName ""
1050	foreach cname [$_first components] {
1051	foreach fname [$_first fieldnames $cname] {
1052	if { [info exists _fields($fname)] } {
1053	continue
1054	}
1055	foreach { label units components } \
1056	[$_first fieldinfo $fname] break
1057	$itk_component(field) choices insert end "$fname" "$label"
1058	$itk_component(fieldmenu) add radiobutton -label "$label" \
1059	-value $label -variable [itcl::scope _curFldLabel] \
1060	-selectcolor red \
1061	-activebackground $itk_option(-plotbackground) \
1062	-activeforeground $itk_option(-plotforeground) \
1063	-font "Arial 8" \
1064	-command [itcl::code $this Combo invoke]
1065	set _fields($fname) [list $label $units $components]
1066	if { $_curFldName == "" } {
1067	set _curFldName $fname
1068	set _curFldLabel $label
1069	}
1070	}
1071	}
1072	$itk_component(field) value $_curFldLabel
1073	}
1074
1075	if { $_reset } {
1076	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1077	streamlinesVisible streamlinesColormap \
1078	streamlinesLighting \
1079	streamlinesColormap field \
1080	volumeVisible volumeEdges volumeLighting volumeOpacity \
1081	volumeWireframe \
1082	cutplaneVisible \
1083	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1084	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1085
1086	# Reset the camera and other view parameters
1087	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1088	$_arcball quaternion $q
1089	if {$_view(ortho)} {
1090	SendCmd "camera mode ortho"
1091	} else {
1092	SendCmd "camera mode persp"
1093	}
1094	DoRotate
1095	PanCamera
1096	Zoom reset
1097	SendCmd "camera reset"
1098	set _reset 0
1099	}
1100	# Actually write the commands to the server socket. If it fails, we don't
1101	# care. We're finished here.
1102	blt::busy hold $itk_component(hull)
1103	StopBufferingCommands
1104	blt::busy release $itk_component(hull)
1105	}
1106
1107	# ----------------------------------------------------------------------
1108	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1109	#
1110	# Returns a list of server IDs for the current datasets being displayed. This
1111	# is normally a single ID, but it might be a list of IDs if the current data
1112	# object has multiple components.
1113	# ----------------------------------------------------------------------
1114	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1115	set flag [lindex $args 0]
1116	switch -- $flag {
1117	"-all" {
1118	if { [llength $args] > 1 } {
1119	error "CurrentDatasets: can't specify dataobj after \"-all\""
1120	}
1121	set dlist [get -objects]
1122	}
1123	"-visible" {
1124	if { [llength $args] > 1 } {
1125	set dlist {}
1126	set args [lrange $args 1 end]
1127	foreach dataobj $args {
1128	if { [info exists _obj2ovride($dataobj-raise)] } {
1129	lappend dlist $dataobj
1130	}
1131	}
1132	} else {
1133	set dlist [get -visible]
1134	}
1135	}
1136	default {
1137	set dlist $args
1138	}
1139	}
1140	set rlist ""
1141	foreach dataobj $dlist {
1142	foreach comp [$dataobj components] {
1143	set tag $dataobj-$comp
1144	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1145	lappend rlist $tag
1146	}
1147	}
1148	}
1149	return $rlist
1150	}
1151
1152	# ----------------------------------------------------------------------
1153	# USAGE: Zoom in
1154	# USAGE: Zoom out
1155	# USAGE: Zoom reset
1156	#
1157	# Called automatically when the user clicks on one of the zoom
1158	# controls for this widget. Changes the zoom for the current view.
1159	# ----------------------------------------------------------------------
1160	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1161	switch -- $option {
1162	"in" {
1163	set _view(zoom) [expr {$_view(zoom)*1.25}]
1164	SendCmd "camera zoom $_view(zoom)"
1165	}
1166	"out" {
1167	set _view(zoom) [expr {$_view(zoom)*0.8}]
1168	SendCmd "camera zoom $_view(zoom)"
1169	}
1170	"reset" {
1171	array set _view {
1172	qw 0.853553
1173	qx -0.353553
1174	qy 0.353553
1175	qz 0.146447
1176	zoom 1.0
1177	xpan 0
1178	ypan 0
1179	}
1180	if { $_first != "" } {
1181	set location [$_first hints camera]
1182	if { $location != "" } {
1183	array set _view $location
1184	}
1185	}
1186	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1187	$_arcball quaternion $q
1188	DoRotate
1189	SendCmd "camera reset"
1190	}
1191	}
1192	}
1193
1194	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1195	set x $_view(xpan)
1196	set y $_view(ypan)
1197	SendCmd "camera pan $x $y"
1198	}
1199
1200
1201	# ----------------------------------------------------------------------
1202	# USAGE: Rotate click <x> <y>
1203	# USAGE: Rotate drag <x> <y>
1204	# USAGE: Rotate release <x> <y>
1205	#
1206	# Called automatically when the user clicks/drags/releases in the
1207	# plot area. Moves the plot according to the user's actions.
1208	# ----------------------------------------------------------------------
1209	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1210	switch -- $option {
1211	"click" {
1212	$itk_component(view) configure -cursor fleur
1213	set _click(x) $x
1214	set _click(y) $y
1215	}
1216	"drag" {
1217	if {[array size _click] == 0} {
1218	Rotate click $x $y
1219	} else {
1220	set w [winfo width $itk_component(view)]
1221	set h [winfo height $itk_component(view)]
1222	if {$w <= 0 \|\| $h <= 0} {
1223	return
1224	}
1225
1226	if {[catch {
1227	# this fails sometimes for no apparent reason
1228	set dx [expr {double($x-$_click(x))/$w}]
1229	set dy [expr {double($y-$_click(y))/$h}]
1230	}]} {
1231	return
1232	}
1233	if { $dx == 0 && $dy == 0 } {
1234	return
1235	}
1236	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1237	EventuallyRotate $q
1238	set _click(x) $x
1239	set _click(y) $y
1240	}
1241	}
1242	"release" {
1243	Rotate drag $x $y
1244	$itk_component(view) configure -cursor ""
1245	catch {unset _click}
1246	}
1247	default {
1248	error "bad option \"$option\": should be click, drag, release"
1249	}
1250	}
1251	}
1252
1253	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1254	foreach tag [CurrentDatasets -visible] {
1255	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1256	}
1257	}
1258
1259	# ----------------------------------------------------------------------
1260	# USAGE: $this Pan click x y
1261	# $this Pan drag x y
1262	# $this Pan release x y
1263	#
1264	# Called automatically when the user clicks on one of the zoom
1265	# controls for this widget. Changes the zoom for the current view.
1266	# ----------------------------------------------------------------------
1267	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1268	switch -- $option {
1269	"set" {
1270	set w [winfo width $itk_component(view)]
1271	set h [winfo height $itk_component(view)]
1272	set x [expr $x / double($w)]
1273	set y [expr $y / double($h)]
1274	set _view(xpan) [expr $_view(xpan) + $x]
1275	set _view(ypan) [expr $_view(ypan) + $y]
1276	PanCamera
1277	return
1278	}
1279	"click" {
1280	set _click(x) $x
1281	set _click(y) $y
1282	$itk_component(view) configure -cursor hand1
1283	}
1284	"drag" {
1285	if { ![info exists _click(x)] } {
1286	set _click(x) $x
1287	}
1288	if { ![info exists _click(y)] } {
1289	set _click(y) $y
1290	}
1291	set w [winfo width $itk_component(view)]
1292	set h [winfo height $itk_component(view)]
1293	set dx [expr ($_click(x) - $x)/double($w)]
1294	set dy [expr ($_click(y) - $y)/double($h)]
1295	set _click(x) $x
1296	set _click(y) $y
1297	set _view(xpan) [expr $_view(xpan) - $dx]
1298	set _view(ypan) [expr $_view(ypan) - $dy]
1299	PanCamera
1300	}
1301	"release" {
1302	Pan drag $x $y
1303	$itk_component(view) configure -cursor ""
1304	}
1305	default {
1306	error "unknown option \"$option\": should set, click, drag, or release"
1307	}
1308	}
1309	}
1310
1311	# ----------------------------------------------------------------------
1312	# USAGE: InitSettings <what> ?<value>?
1313	#
1314	# Used internally to update rendering settings whenever parameters
1315	# change in the popup settings panel. Sends the new settings off
1316	# to the back end.
1317	# ----------------------------------------------------------------------
1318	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1319	foreach spec $args {
1320	if { [info exists _settings($_first-$spec)] } {
1321	# Reset global setting with dataobj specific setting
1322	set _settings($spec) $_settings($_first-$spec)
1323	}
1324	AdjustSetting $spec
1325	}
1326	}
1327
1328	#
1329	# AdjustSetting --
1330	#
1331	# Changes/updates a specific setting in the widget. There are
1332	# usually user-setable option. Commands are sent to the render
1333	# server.
1334	#
1335	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1336	if { ![isconnected] } {
1337	return
1338	}
1339	switch -- $what {
1340	"volumeOpacity" {
1341	set val $_settings(volumeOpacity)
1342	set sval [expr { 0.01 * double($val) }]
1343	SendCmd "polydata opacity $sval"
1344	}
1345	"volumeWireframe" {
1346	set bool $_settings(volumeWireframe)
1347	SendCmd "polydata wireframe $bool"
1348	}
1349	"volumeVisible" {
1350	set bool $_settings(volumeVisible)
1351	SendCmd "polydata visible $bool"
1352	if { $bool } {
1353	Rappture::Tooltip::for $itk_component(volume) \
1354	"Hide the volume"
1355	} else {
1356	Rappture::Tooltip::for $itk_component(volume) \
1357	"Show the volume"
1358	}
1359	}
1360	"volumeLighting" {
1361	set bool $_settings(volumeLighting)
1362	SendCmd "polydata lighting $bool"
1363	}
1364	"volumeEdges" {
1365	set bool $_settings(volumeEdges)
1366	SendCmd "polydata edges $bool"
1367	}
1368	"axesVisible" {
1369	set bool $_settings(axesVisible)
1370	SendCmd "axis visible all $bool"
1371	}
1372	"axisLabelsVisible" {
1373	set bool $_settings(axisLabelsVisible)
1374	SendCmd "axis labels all $bool"
1375	}
1376	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1377	set axis [string tolower [string range $what 4 4]]
1378	set bool $_settings($what)
1379	SendCmd "axis grid $axis $bool"
1380	}
1381	"axis-mode" {
1382	set mode [$itk_component(axismode) value]
1383	set mode [$itk_component(axismode) translate $mode]
1384	set _settings($what) $mode
1385	SendCmd "axis flymode $mode"
1386	}
1387	"cutplaneEdges" {
1388	set bool $_settings($what)
1389	SendCmd "cutplane edges $bool"
1390	}
1391	"cutplaneVisible" {
1392	set bool $_settings($what)
1393	SendCmd "cutplane visible $bool"
1394	}
1395	"cutplaneWireframe" {
1396	set bool $_settings($what)
1397	SendCmd "cutplane wireframe $bool"
1398	}
1399	"cutplaneLighting" {
1400	set bool $_settings($what)
1401	SendCmd "cutplane lighting $bool"
1402	}
1403	"cutplaneOpacity" {
1404	set val $_settings($what)
1405	set sval [expr { 0.01 * double($val) }]
1406	SendCmd "cutplane opacity $sval"
1407	}
1408	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1409	set axis [string tolower [string range $what 8 8]]
1410	set bool $_settings($what)
1411	if { $bool } {
1412	$itk_component(${axis}CutScale) configure -state normal \
1413	-troughcolor white
1414	} else {
1415	$itk_component(${axis}CutScale) configure -state disabled \
1416	-troughcolor grey82
1417	}
1418	SendCmd "cutplane axis $axis $bool"
1419	}
1420	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1421	set axis [string tolower [string range $what 8 8]]
1422	set pos [expr $_settings($what) * 0.01]
1423	SendCmd "cutplane slice ${axis} ${pos}"
1424	set _cutplanePending 0
1425	}
1426	"streamlinesSeedsVisible" {
1427	set bool $_settings($what)
1428	SendCmd "streamlines seed visible $bool"
1429	}
1430	"streamlinesNumSeeds" {
1431	set density $_settings($what)
1432	EventuallyReseed $density
1433	}
1434	"streamlinesVisible" {
1435	set bool $_settings($what)
1436	SendCmd "streamlines visible $bool"
1437	if { $bool } {
1438	Rappture::Tooltip::for $itk_component(streamlines) \
1439	"Hide the streamlines"
1440	} else {
1441	Rappture::Tooltip::for $itk_component(streamlines) \
1442	"Show the streamlines"
1443	}
1444	}
1445	"streamlinesMode" {
1446	set mode [$itk_component(streammode) value]
1447	set _settings(streamlinesMode) $mode
1448	switch -- $mode {
1449	"lines" {
1450	SendCmd "streamlines lines"
1451	}
1452	"ribbons" {
1453	SendCmd "streamlines ribbons 3 0"
1454	}
1455	"tubes" {
1456	SendCmd "streamlines tubes 5 3"
1457	}
1458	}
1459	}
1460	"streamlinesColormap" {
1461	set colormap [$itk_component(colormap) value]
1462	set _settings(streamlinesColormap) $colormap
1463	foreach dataset [CurrentDatasets -visible $_first] {
1464	foreach {dataobj comp} [split $dataset -] break
1465	ChangeColormap $dataobj $comp $colormap
1466	}
1467	set _legendPending 1
1468	}
1469	"streamlinesOpacity" {
1470	set val $_settings(streamlinesOpacity)
1471	set sval [expr { 0.01 * double($val) }]
1472	SendCmd "streamlines opacity $sval"
1473	}
1474	"streamlinesScale" {
1475	set val $_settings(streamlinesScale)
1476	set sval [expr { 0.01 * double($val) }]
1477	SendCmd "streamlines scale $sval $sval $sval"
1478	}
1479	"streamlinesLighting" {
1480	set bool $_settings(streamlinesLighting)
1481	SendCmd "streamlines lighting $bool"
1482	}
1483	"field" {
1484	set label [$itk_component(field) value]
1485	set fname [$itk_component(field) translate $label]
1486	set _settings(field) $fname
1487	if { [info exists _fields($fname)] } {
1488	foreach { label units components } $_fields($fname) break
1489	if { $components > 1 } {
1490	set _colorMode vmag
1491	} else {
1492	set _colorMode scalar
1493	}
1494	set _curFldName $fname
1495	set _curFldLabel $label
1496	} else {
1497	puts stderr "unknown field \"$fname\""
1498	return
1499	}
1500	# Get the new limits because the field changed.
1501	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1502	SendCmd "streamlines colormode $_colorMode $_curFldName"
1503	SendCmd "cutplane colormode $_colorMode $_curFldName"
1504	DrawLegend
1505	}
1506	default {
1507	error "don't know how to fix $what"
1508	}
1509	}
1510	}
1511
1512	#
1513	# RequestLegend --
1514	#
1515	# Request a new legend from the server. The size of the legend
1516	# is determined from the height of the canvas. It will be rotated
1517	# to be vertical when drawn.
1518	#
1519	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1520	set font "Arial 8"
1521	set lineht [font metrics $font -linespace]
1522	set c $itk_component(legend)
1523	set w 12
1524	set h [expr {$_height - 3 * ($lineht + 2)}]
1525	if { $h < 1} {
1526	return
1527	}
1528	# Set the legend on the first streamlines dataset.
1529	foreach dataset [CurrentDatasets -visible $_first] {
1530	foreach {dataobj comp} [split $dataset -] break
1531	if { [info exists _dataset2style($dataset)] } {
1532	SendCmdNoWait \
1533	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1534	break;
1535	}
1536	}
1537	}
1538
1539	#
1540	# ChangeColormap --
1541	#
1542	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1543	set tag $dataobj-$comp
1544	if { ![info exist _style($tag)] } {
1545	error "no initial colormap"
1546	}
1547	array set style $_style($tag)
1548	set style(-color) $color
1549	set _style($tag) [array get style]
1550	SetColormap $dataobj $comp
1551	}
1552
1553	#
1554	# SetColormap --
1555	#
1556	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1557	array set style {
1558	-color BCGYR
1559	-levels 6
1560	-opacity 1.0
1561	}
1562	set tag $dataobj-$comp
1563	if { ![info exists _initialStyle($tag)] } {
1564	# Save the initial component style.
1565	set _initialStyle($tag) [$dataobj style $comp]
1566	}
1567
1568	# Override defaults with initial style defined in xml.
1569	array set style $_initialStyle($tag)
1570
1571	if { ![info exists _style($tag)] } {
1572	set _style($tag) [array get style]
1573	}
1574	# Override initial style with current style.
1575	array set style $_style($tag)
1576
1577	set name "$style(-color):$style(-levels):$style(-opacity)"
1578	if { ![info exists _colormaps($name)] } {
1579	BuildColormap $name [array get style]
1580	set _colormaps($name) 1
1581	}
1582	if { ![info exists _dataset2style($tag)] \|\|
1583	$_dataset2style($tag) != $name } {
1584	SendCmd "streamlines colormap $name $tag"
1585	SendCmd "cutplane colormap $name $tag"
1586	set _dataset2style($tag) $name
1587	}
1588	}
1589
1590
1591	#
1592	# BuildColormap --
1593	#
1594	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1595	array set style $styles
1596	set cmap [ColorsToColormap $style(-color)]
1597	if { [llength $cmap] == 0 } {
1598	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1599	}
1600	if { ![info exists _settings(volumeOpacity)] } {
1601	set _settings(volumeOpacity) $style(-opacity)
1602	}
1603	set max $_settings(volumeOpacity)
1604
1605	set wmap "0.0 1.0 1.0 1.0"
1606	SendCmd "colormap add $name { $cmap } { $wmap }"
1607	}
1608
1609	# ----------------------------------------------------------------------
1610	# CONFIGURATION OPTION: -plotbackground
1611	# ----------------------------------------------------------------------
1612	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1613	if { [isconnected] } {
1614	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1615	SendCmd "screen bgcolor $r $g $b"
1616	}
1617	}
1618
1619	# ----------------------------------------------------------------------
1620	# CONFIGURATION OPTION: -plotforeground
1621	# ----------------------------------------------------------------------
1622	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1623	if { [isconnected] } {
1624	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1625	#fix this!
1626	#SendCmd "color background $r $g $b"
1627	}
1628	}
1629
1630	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1631
1632	set fg [option get $itk_component(hull) font Font]
1633	#set bfg [option get $itk_component(hull) boldFont Font]
1634
1635	set inner [$itk_component(main) insert end \
1636	-title "Volume Settings" \
1637	-icon [Rappture::icon volume-on]]
1638	$inner configure -borderwidth 4
1639
1640	checkbutton $inner.volume \
1641	-text "Show Volume" \
1642	-variable [itcl::scope _settings(volumeVisible)] \
1643	-command [itcl::code $this AdjustSetting volumeVisible] \
1644	-font "Arial 9"
1645
1646	checkbutton $inner.wireframe \
1647	-text "Show Wireframe" \
1648	-variable [itcl::scope _settings(volumeWireframe)] \
1649	-command [itcl::code $this AdjustSetting volumeWireframe] \
1650	-font "Arial 9"
1651
1652	checkbutton $inner.lighting \
1653	-text "Enable Lighting" \
1654	-variable [itcl::scope _settings(volumeLighting)] \
1655	-command [itcl::code $this AdjustSetting volumeLighting] \
1656	-font "Arial 9"
1657
1658	checkbutton $inner.edges \
1659	-text "Show Edges" \
1660	-variable [itcl::scope _settings(volumeEdges)] \
1661	-command [itcl::code $this AdjustSetting volumeEdges] \
1662	-font "Arial 9"
1663
1664	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1665	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1666	-variable [itcl::scope _settings(volumeOpacity)] \
1667	-width 10 \
1668	-showvalue off \
1669	-command [itcl::code $this AdjustSetting volumeOpacity]
1670
1671	blt::table $inner \
1672	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1673	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1674	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1675	3,0 $inner.opacity_l -anchor w -pady 2 \
1676	3,1 $inner.opacity -fill x -pady 2
1677
1678	blt::table configure $inner r* c* -resize none
1679	blt::table configure $inner r4 c1 -resize expand
1680	}
1681
1682
1683	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1684
1685	set fg [option get $itk_component(hull) font Font]
1686	#set bfg [option get $itk_component(hull) boldFont Font]
1687
1688	set inner [$itk_component(main) insert end \
1689	-title "Streams Settings" \
1690	-icon [Rappture::icon streamlines-on]]
1691	$inner configure -borderwidth 4
1692
1693	checkbutton $inner.streamlines \
1694	-text "Show Streamlines" \
1695	-variable [itcl::scope _settings(streamlinesVisible)] \
1696	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1697	-font "Arial 9"
1698
1699	checkbutton $inner.lighting \
1700	-text "Enable Lighting" \
1701	-variable [itcl::scope _settings(streamlinesLighting)] \
1702	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1703	-font "Arial 9"
1704
1705	checkbutton $inner.seeds \
1706	-text "Show Seeds" \
1707	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1708	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1709	-font "Arial 9"
1710
1711	label $inner.mode_l -text "Mode" -font "Arial 9"
1712	itk_component add streammode {
1713	Rappture::Combobox $inner.mode -width 10 -editable no
1714	}
1715	$inner.mode choices insert end \
1716	"lines" "lines" \
1717	"ribbons" "ribbons" \
1718	"tubes" "tubes"
1719	$itk_component(streammode) value $_settings(streamlinesMode)
1720	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1721
1722	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1723	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1724	-variable [itcl::scope _settings(streamlinesOpacity)] \
1725	-width 10 \
1726	-showvalue off \
1727	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1728
1729	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1730	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1731	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1732	-width 10 \
1733	-showvalue on \
1734	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1735
1736	label $inner.scale_l -text "Scale" -font "Arial 9"
1737	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1738	-variable [itcl::scope _settings(streamlinesScale)] \
1739	-width 10 \
1740	-showvalue off \
1741	-command [itcl::code $this AdjustSetting streamlinesScale]
1742
1743	label $inner.field_l -text "Color by" -font "Arial 9"
1744	itk_component add field {
1745	Rappture::Combobox $inner.field -width 10 -editable no
1746	}
1747	bind $inner.field <<Value>> \
1748	[itcl::code $this AdjustSetting field]
1749
1750	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1751	itk_component add colormap {
1752	Rappture::Combobox $inner.colormap -width 10 -editable no
1753	}
1754	$inner.colormap choices insert end \
1755	"BCGYR" "BCGYR" \
1756	"BGYOR" "BGYOR" \
1757	"blue" "blue" \
1758	"blue-to-brown" "blue-to-brown" \
1759	"blue-to-orange" "blue-to-orange" \
1760	"blue-to-grey" "blue-to-grey" \
1761	"green-to-magenta" "green-to-magenta" \
1762	"greyscale" "greyscale" \
1763	"nanohub" "nanohub" \
1764	"rainbow" "rainbow" \
1765	"spectral" "spectral" \
1766	"ROYGB" "ROYGB" \
1767	"RYGCB" "RYGCB" \
1768	"brown-to-blue" "brown-to-blue" \
1769	"grey-to-blue" "grey-to-blue" \
1770	"orange-to-blue" "orange-to-blue"
1771
1772	$itk_component(colormap) value "BCGYR"
1773	bind $inner.colormap <<Value>> \
1774	[itcl::code $this AdjustSetting streamlinesColormap]
1775
1776	blt::table $inner \
1777	0,0 $inner.field_l -anchor w -pady 2 \
1778	0,1 $inner.field -fill x -pady 2 \
1779	1,0 $inner.colormap_l -anchor w -pady 2 \
1780	1,1 $inner.colormap -fill x -pady 2 \
1781	2,0 $inner.mode_l -anchor w -pady 2 \
1782	2,1 $inner.mode -fill x -pady 2 \
1783	3,0 $inner.opacity_l -anchor w -pady 2 \
1784	3,1 $inner.opacity -fill x -pady 2 \
1785	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1786	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1787	7,0 $inner.density_l -anchor w -pady 2 \
1788	7,1 $inner.density -fill x -pady 2 \
1789
1790	blt::table configure $inner r* c* -resize none
1791	blt::table configure $inner r10 c1 c2 -resize expand
1792	}
1793
1794	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1795
1796	set fg [option get $itk_component(hull) font Font]
1797	#set bfg [option get $itk_component(hull) boldFont Font]
1798
1799	set inner [$itk_component(main) insert end \
1800	-title "Axis Settings" \
1801	-icon [Rappture::icon axis1]]
1802	$inner configure -borderwidth 4
1803
1804	checkbutton $inner.visible \
1805	-text "Show Axes" \
1806	-variable [itcl::scope _settings(axesVisible)] \
1807	-command [itcl::code $this AdjustSetting axesVisible] \
1808	-font "Arial 9"
1809
1810	checkbutton $inner.labels \
1811	-text "Show Axis Labels" \
1812	-variable [itcl::scope _settings(axisLabelsVisible)] \
1813	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1814	-font "Arial 9"
1815
1816	checkbutton $inner.xgrid \
1817	-text "Show X Grid" \
1818	-variable [itcl::scope _settings(axisXGrid)] \
1819	-command [itcl::code $this AdjustSetting axisXGrid] \
1820	-font "Arial 9"
1821	checkbutton $inner.ygrid \
1822	-text "Show Y Grid" \
1823	-variable [itcl::scope _settings(axisYGrid)] \
1824	-command [itcl::code $this AdjustSetting axisYGrid] \
1825	-font "Arial 9"
1826	checkbutton $inner.zgrid \
1827	-text "Show Z Grid" \
1828	-variable [itcl::scope _settings(axisZGrid)] \
1829	-command [itcl::code $this AdjustSetting axisZGrid] \
1830	-font "Arial 9"
1831
1832	label $inner.mode_l -text "Mode" -font "Arial 9"
1833
1834	itk_component add axismode {
1835	Rappture::Combobox $inner.mode -width 10 -editable no
1836	}
1837	$inner.mode choices insert end \
1838	"static_triad" "static" \
1839	"closest_triad" "closest" \
1840	"furthest_triad" "furthest" \
1841	"outer_edges" "outer"
1842	$itk_component(axismode) value "static"
1843	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1844
1845	blt::table $inner \
1846	0,0 $inner.visible -anchor w -cspan 2 \
1847	1,0 $inner.labels -anchor w -cspan 2 \
1848	2,0 $inner.xgrid -anchor w -cspan 2 \
1849	3,0 $inner.ygrid -anchor w -cspan 2 \
1850	4,0 $inner.zgrid -anchor w -cspan 2 \
1851	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1852	6,0 $inner.mode -fill x -cspan 2
1853
1854	blt::table configure $inner r* c* -resize none
1855	blt::table configure $inner r7 c1 -resize expand
1856	}
1857
1858
1859	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1860	set inner [$itk_component(main) insert end \
1861	-title "Camera Settings" \
1862	-icon [Rappture::icon camera]]
1863	$inner configure -borderwidth 4
1864
1865	label $inner.view_l -text "view" -font "Arial 9"
1866	set f [frame $inner.view]
1867	foreach side { front back left right top bottom } {
1868	button $f.$side -image [Rappture::icon view$side] \
1869	-command [itcl::code $this SetOrientation $side]
1870	Rappture::Tooltip::for $f.$side "Change the view to $side"
1871	pack $f.$side -side left
1872	}
1873
1874	blt::table $inner \
1875	0,0 $inner.view_l -anchor e -pady 2 \
1876	0,1 $inner.view -anchor w -pady 2
1877
1878	set labels { qx qy qz qw xpan ypan zoom }
1879	set row 1
1880	foreach tag $labels {
1881	label $inner.${tag}label -text $tag -font "Arial 9"
1882	entry $inner.${tag} -font "Arial 9" -bg white \
1883	-textvariable [itcl::scope _view($tag)]
1884	bind $inner.${tag} <KeyPress-Return> \
1885	[itcl::code $this camera set ${tag}]
1886	blt::table $inner \
1887	$row,0 $inner.${tag}label -anchor e -pady 2 \
1888	$row,1 $inner.${tag} -anchor w -pady 2
1889	blt::table configure $inner r$row -resize none
1890	incr row
1891	}
1892	checkbutton $inner.ortho \
1893	-text "Orthographic Projection" \
1894	-variable [itcl::scope _view(ortho)] \
1895	-command [itcl::code $this camera set ortho] \
1896	-font "Arial 9"
1897	blt::table $inner \
1898	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1899	blt::table configure $inner r$row -resize none
1900	incr row
1901
1902	blt::table configure $inner c* r* -resize none
1903	blt::table configure $inner c2 -resize expand
1904	blt::table configure $inner r$row -resize expand
1905	}
1906
1907	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1908
1909	set fg [option get $itk_component(hull) font Font]
1910
1911	set inner [$itk_component(main) insert end \
1912	-title "Cutplane Settings" \
1913	-icon [Rappture::icon cutbutton]]
1914
1915	$inner configure -borderwidth 4
1916
1917	checkbutton $inner.visible \
1918	-text "Show Cutplanes" \
1919	-variable [itcl::scope _settings(cutplaneVisible)] \
1920	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1921	-font "Arial 9"
1922
1923	checkbutton $inner.wireframe \
1924	-text "Show Wireframe" \
1925	-variable [itcl::scope _settings(cutplaneWireframe)] \
1926	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1927	-font "Arial 9"
1928
1929	checkbutton $inner.lighting \
1930	-text "Enable Lighting" \
1931	-variable [itcl::scope _settings(cutplaneLighting)] \
1932	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1933	-font "Arial 9"
1934
1935	checkbutton $inner.edges \
1936	-text "Show Edges" \
1937	-variable [itcl::scope _settings(cutplaneEdges)] \
1938	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1939	-font "Arial 9"
1940
1941	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1942	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1943	-variable [itcl::scope _settings(cutplaneOpacity)] \
1944	-width 10 \
1945	-showvalue off \
1946	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1947	$inner.opacity set $_settings(cutplaneOpacity)
1948
1949	# X-value slicer...
1950	itk_component add xCutButton {
1951	Rappture::PushButton $inner.xbutton \
1952	-onimage [Rappture::icon x-cutplane-red] \
1953	-offimage [Rappture::icon x-cutplane-red] \
1954	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1955	-variable [itcl::scope _settings(cutplaneXVisible)]
1956	}
1957	Rappture::Tooltip::for $itk_component(xCutButton) \
1958	"Toggle the X-axis cutplane on/off"
1959	$itk_component(xCutButton) select
1960
1961	itk_component add xCutScale {
1962	::scale $inner.xval -from 100 -to 0 \
1963	-width 10 -orient vertical -showvalue yes \
1964	-borderwidth 1 -highlightthickness 0 \
1965	-command [itcl::code $this EventuallySetCutplane x] \
1966	-variable [itcl::scope _settings(cutplaneXPosition)] \
1967	-foreground red3 -font "Arial 9 bold"
1968	} {
1969	usual
1970	ignore -borderwidth -highlightthickness -foreground -font
1971	}
1972	# Set the default cutplane value before disabling the scale.
1973	$itk_component(xCutScale) set 50
1974	$itk_component(xCutScale) configure -state disabled
1975	Rappture::Tooltip::for $itk_component(xCutScale) \
1976	"@[itcl::code $this Slice tooltip x]"
1977
1978	# Y-value slicer...
1979	itk_component add yCutButton {
1980	Rappture::PushButton $inner.ybutton \
1981	-onimage [Rappture::icon y-cutplane-green] \
1982	-offimage [Rappture::icon y-cutplane-green] \
1983	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1984	-variable [itcl::scope _settings(cutplaneYVisible)]
1985	}
1986	Rappture::Tooltip::for $itk_component(yCutButton) \
1987	"Toggle the Y-axis cutplane on/off"
1988	$itk_component(yCutButton) select
1989
1990	itk_component add yCutScale {
1991	::scale $inner.yval -from 100 -to 0 \
1992	-width 10 -orient vertical -showvalue yes \
1993	-borderwidth 1 -highlightthickness 0 \
1994	-command [itcl::code $this EventuallySetCutplane y] \
1995	-variable [itcl::scope _settings(cutplaneYPosition)] \
1996	-foreground green3 -font "Arial 9 bold"
1997	} {
1998	usual
1999	ignore -borderwidth -highlightthickness -foreground -font
2000	}
2001	Rappture::Tooltip::for $itk_component(yCutScale) \
2002	"@[itcl::code $this Slice tooltip y]"
2003	# Set the default cutplane value before disabling the scale.
2004	$itk_component(yCutScale) set 50
2005	$itk_component(yCutScale) configure -state disabled
2006
2007	# Z-value slicer...
2008	itk_component add zCutButton {
2009	Rappture::PushButton $inner.zbutton \
2010	-onimage [Rappture::icon z-cutplane-blue] \
2011	-offimage [Rappture::icon z-cutplane-blue] \
2012	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
2013	-variable [itcl::scope _settings(cutplaneZVisible)]
2014	}
2015	Rappture::Tooltip::for $itk_component(zCutButton) \
2016	"Toggle the Z-axis cutplane on/off"
2017	$itk_component(zCutButton) select
2018
2019	itk_component add zCutScale {
2020	::scale $inner.zval -from 100 -to 0 \
2021	-width 10 -orient vertical -showvalue yes \
2022	-borderwidth 1 -highlightthickness 0 \
2023	-command [itcl::code $this EventuallySetCutplane z] \
2024	-variable [itcl::scope _settings(cutplaneZPosition)] \
2025	-foreground blue3 -font "Arial 9 bold"
2026	} {
2027	usual
2028	ignore -borderwidth -highlightthickness -foreground -font
2029	}
2030	$itk_component(zCutScale) set 50
2031	$itk_component(zCutScale) configure -state disabled
2032	Rappture::Tooltip::for $itk_component(zCutScale) \
2033	"@[itcl::code $this Slice tooltip z]"
2034
2035	blt::table $inner \
2036	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2037	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2038	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2039	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2040	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2041	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2042	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2043	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2044	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2045	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2046	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2047
2048	blt::table configure $inner r* c* -resize none
2049	blt::table configure $inner r7 c4 -resize expand
2050	}
2051
2052	#
2053	# camera --
2054	#
2055	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2056	switch -- $option {
2057	"show" {
2058	puts [array get _view]
2059	}
2060	"set" {
2061	set who [lindex $args 0]
2062	set x $_view($who)
2063	set code [catch { string is double $x } result]
2064	if { $code != 0 \|\| !$result } {
2065	return
2066	}
2067	switch -- $who {
2068	"ortho" {
2069	if {$_view(ortho)} {
2070	SendCmd "camera mode ortho"
2071	} else {
2072	SendCmd "camera mode persp"
2073	}
2074	}
2075	"xpan" - "ypan" {
2076	PanCamera
2077	}
2078	"qx" - "qy" - "qz" - "qw" {
2079	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2080	$_arcball quaternion $q
2081	EventuallyRotate $q
2082	}
2083	"zoom" {
2084	SendCmd "camera zoom $_view(zoom)"
2085	}
2086	}
2087	}
2088	}
2089	}
2090
2091	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2092	set bytes ""
2093	foreach dataobj [get] {
2094	foreach comp [$dataobj components] {
2095	set tag $dataobj-$comp
2096	set contents [$dataobj vtkdata $comp]
2097	append bytes "$contents\n"
2098	}
2099	}
2100	return [list .vtk $bytes]
2101	}
2102
2103	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2104	if { [image width $_image(download)] > 0 &&
2105	[image height $_image(download)] > 0 } {
2106	set bytes [$_image(download) data -format "jpeg -quality 100"]
2107	set bytes [Rappture::encoding::decode -as b64 $bytes]
2108	return [list .jpg $bytes]
2109	}
2110	return ""
2111	}
2112
2113	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2114	Rappture::Balloon $popup \
2115	-title "[Rappture::filexfer::label downloadWord] as..."
2116	set inner [$popup component inner]
2117	label $inner.summary -text "" -anchor w
2118	radiobutton $inner.vtk_button -text "VTK data file" \
2119	-variable [itcl::scope _downloadPopup(format)] \
2120	-font "Helvetica 9 " \
2121	-value vtk
2122	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2123	radiobutton $inner.image_button -text "Image File" \
2124	-variable [itcl::scope _downloadPopup(format)] \
2125	-value image
2126	Rappture::Tooltip::for $inner.image_button \
2127	"Save as digital image."
2128
2129	button $inner.ok -text "Save" \
2130	-highlightthickness 0 -pady 2 -padx 3 \
2131	-command $command \
2132	-compound left \
2133	-image [Rappture::icon download]
2134
2135	button $inner.cancel -text "Cancel" \
2136	-highlightthickness 0 -pady 2 -padx 3 \
2137	-command [list $popup deactivate] \
2138	-compound left \
2139	-image [Rappture::icon cancel]
2140
2141	blt::table $inner \
2142	0,0 $inner.summary -cspan 2 \
2143	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2144	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2145	4,1 $inner.cancel -width .9i -fill y \
2146	4,0 $inner.ok -padx 2 -width .9i -fill y
2147	blt::table configure $inner r3 -height 4
2148	blt::table configure $inner r4 -pady 4
2149	raise $inner.image_button
2150	$inner.vtk_button invoke
2151	return $inner
2152	}
2153
2154	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2155	# Parse style string.
2156	set tag $dataobj-$comp
2157	set style [$dataobj style $comp]
2158	array set settings {
2159	-color \#808080
2160	-edges 0
2161	-edgecolor black
2162	-linewidth 1.0
2163	-opacity 0.4
2164	-wireframe 0
2165	-lighting 1
2166	-seeds 1
2167	-seedcolor white
2168	-visible 1
2169	}
2170	if { $dataobj != $_first } {
2171	set settings(-opacity) 1
2172	}
2173	array set settings $style
2174	SendCmd "streamlines add $tag"
2175	SendCmd "streamlines seed visible off $tag"
2176	set seeds [$dataobj hints seeds]
2177	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2178	set length [string length $seeds]
2179	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2180	SendCmd "$seeds"
2181	set _seeds($dataobj) 1
2182	}
2183	SendCmd "cutplane add $tag"
2184	SendCmd "polydata add $tag"
2185	#SendCmd "polydata colormode ccolor {} $tag"
2186	set _settings(volumeEdges) $settings(-edges)
2187	set _settings(volumeLighting) $settings(-lighting)
2188	set _settings(volumeOpacity) $settings(-opacity)
2189	set _settings(volumeWireframe) $settings(-wireframe)
2190	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2191	SetColormap $dataobj $comp
2192	}
2193
2194	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2195	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2196	return 0
2197	}
2198	return 1
2199	}
2200
2201	# ----------------------------------------------------------------------
2202	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2203	#
2204	# Invoked automatically whenever the "legend" command comes in from
2205	# the rendering server. Indicates that binary image data with the
2206	# specified <size> will follow.
2207	# ----------------------------------------------------------------------
2208	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2209	set _legendPending 0
2210	set _title $title
2211	regsub {\(mag\)} $title "" _title
2212	if { [IsConnected] } {
2213	set bytes [ReceiveBytes $size]
2214	if { ![info exists _image(legend)] } {
2215	set _image(legend) [image create photo]
2216	}
2217	$_image(legend) configure -data $bytes
2218	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2219	if { [catch {DrawLegend} errs] != 0 } {
2220	puts stderr errs=$errs
2221	}
2222	}
2223	}
2224
2225	#
2226	# DrawLegend --
2227	#
2228	# Draws the legend in it's own canvas which resides to the right
2229	# of the contour plot area.
2230	#
2231	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2232	set fname $_curFldName
2233	set c $itk_component(view)
2234	set w [winfo width $c]
2235	set h [winfo height $c]
2236	set font "Arial 8"
2237	set lineht [font metrics $font -linespace]
2238
2239	if { [info exists _fields($fname)] } {
2240	foreach { title units } $_fields($fname) break
2241	if { $units != "" } {
2242	set title [format "%s (%s)" $title $units]
2243	}
2244	} else {
2245	set title $fname
2246	}
2247	if { $_settings(legendVisible) } {
2248	set x [expr $w - 2]
2249	if { [$c find withtag "legend"] == "" } {
2250	set y 2
2251	$c create text $x $y \
2252	-anchor ne \
2253	-fill $itk_option(-plotforeground) -tags "title legend" \
2254	-font $font
2255	incr y $lineht
2256	$c create text $x $y \
2257	-anchor ne \
2258	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2259	-font $font
2260	incr y $lineht
2261	$c create image $x $y \
2262	-anchor ne \
2263	-image $_image(legend) -tags "colormap legend"
2264	$c create text $x [expr {$h-2}] \
2265	-anchor se \
2266	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2267	-font $font
2268	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2269	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2270	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2271	}
2272	$c bind title <ButtonPress> [itcl::code $this Combo post]
2273	$c bind title <Enter> [itcl::code $this Combo activate]
2274	$c bind title <Leave> [itcl::code $this Combo deactivate]
2275	# Reset the item coordinates according the current size of the plot.
2276	$c itemconfigure title -text $title
2277	if { [info exists _limits($_curFldName)] } {
2278	foreach {vmin vmax} $_limits($_curFldName) break
2279	$c itemconfigure vmin -text [format %g $vmin]
2280	$c itemconfigure vmax -text [format %g $vmax]
2281	}
2282	set y 2
2283	$c coords title $x $y
2284	incr y $lineht
2285	$c coords vmax $x $y
2286	incr y $lineht
2287	$c coords colormap $x $y
2288	$c coords vmin $x [expr {$h - 2}]
2289	}
2290	}
2291
2292	#
2293	# EnterLegend --
2294	#
2295	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2296	SetLegendTip $x $y
2297	}
2298
2299	#
2300	# MotionLegend --
2301	#
2302	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2303	Rappture::Tooltip::tooltip cancel
2304	set c $itk_component(view)
2305	SetLegendTip $x $y
2306	}
2307
2308	#
2309	# LeaveLegend --
2310	#
2311	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2312	Rappture::Tooltip::tooltip cancel
2313	.rappturetooltip configure -icon ""
2314	}
2315
2316	#
2317	# SetLegendTip --
2318	#
2319	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2320	set c $itk_component(view)
2321	set w [winfo width $c]
2322	set h [winfo height $c]
2323	set font "Arial 8"
2324	set lineht [font metrics $font -linespace]
2325
2326	set imgHeight [image height $_image(legend)]
2327	set coords [$c coords colormap]
2328	set imgX [expr $w - [image width $_image(legend)] - 2]
2329	set imgY [expr $y - 2 * ($lineht + 2)]
2330
2331	if { [info exists _fields($_title)] } {
2332	foreach { title units } $_fields($_title) break
2333	if { $units != "" } {
2334	set title [format "%s (%s)" $title $units]
2335	}
2336	} else {
2337	set title $_title
2338	}
2339	# Make a swatch of the selected color
2340	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2341	#puts stderr "out of range: $imgY"
2342	return
2343	}
2344	if { ![info exists _image(swatch)] } {
2345	set _image(swatch) [image create photo -width 24 -height 24]
2346	}
2347	set color [eval format "\#%02x%02x%02x" $pixel]
2348	$_image(swatch) put black -to 0 0 23 23
2349	$_image(swatch) put $color -to 1 1 22 22
2350	.rappturetooltip configure -icon $_image(swatch)
2351
2352	# Compute the value of the point
2353	if { [info exists _limits($_curFldName)] } {
2354	foreach {vmin vmax} $_limits($_curFldName) break
2355	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2356	set value [expr $t * ($vmax - $vmin) + $vmin]
2357	} else {
2358	set value 0.0
2359	}
2360	set tipx [expr $x + 15]
2361	set tipy [expr $y - 5]
2362	Rappture::Tooltip::text $c "$title $value"
2363	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2364	}
2365
2366	# ----------------------------------------------------------------------
2367	# USAGE: Slice move x\|y\|z <newval>
2368	#
2369	# Called automatically when the user drags the slider to move the
2370	# cut plane that slices 3D data. Gets the current value from the
2371	# slider and moves the cut plane to the appropriate point in the
2372	# data set.
2373	# ----------------------------------------------------------------------
2374	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2375	switch -- $option {
2376	"move" {
2377	set axis [lindex $args 0]
2378	set oldval $_settings(axis-${axis}position)
2379	set newval [lindex $args 1]
2380	if {[llength $args] != 2} {
2381	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2382	}
2383	set newpos [expr {0.01*$newval}]
2384	SendCmd "cutplane slice $axis $newpos"
2385	}
2386	"tooltip" {
2387	set axis [lindex $args 0]
2388	set val [$itk_component(${axis}CutScale) get]
2389	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2390	}
2391	default {
2392	error "bad option \"$option\": should be axis, move, or tooltip"
2393	}
2394	}
2395	}
2396
2397	# ----------------------------------------------------------------------
2398	# USAGE: _dropdown post
2399	# USAGE: _dropdown unpost
2400	# USAGE: _dropdown select
2401	#
2402	# Used internally to handle the dropdown list for this combobox. The
2403	# post/unpost options are invoked when the list is posted or unposted
2404	# to manage the relief of the controlling button. The select option
2405	# is invoked whenever there is a selection from the list, to assign
2406	# the value back to the gauge.
2407	# ----------------------------------------------------------------------
2408	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2409	set c $itk_component(view)
2410	switch -- $option {
2411	post {
2412	foreach { x1 y1 x2 y2 } [$c bbox title] break
2413	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2414	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2415	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2416	tk_popup $itk_component(fieldmenu) $x $y
2417	}
2418	activate {
2419	$c itemconfigure title -fill red
2420	}
2421	deactivate {
2422	$c itemconfigure title -fill white
2423	}
2424	invoke {
2425	$itk_component(field) value $_curFldLabel
2426	AdjustSetting field
2427	}
2428	default {
2429	error "bad option \"$option\": should be post, unpost, select"
2430	}
2431	}
2432	}
2433
2434	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2435	array set positions {
2436	front "1 0 0 0"
2437	back "0 0 1 0"
2438	left "0.707107 0 -0.707107 0"
2439	right "0.707107 0 0.707107 0"
2440	top "0.707107 -0.707107 0 0"
2441	bottom "0.707107 0.707107 0 0"
2442	}
2443	foreach name { qw qx qy qz } value $positions($side) {
2444	set _view($name) $value
2445	}
2446	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2447	$_arcball quaternion $q
2448	SendCmd "camera orient $q"
2449	SendCmd "camera reset"
2450	set _view(xpan) 0
2451	set _view(ypan) 0
2452	set _view(zoom) 1.0
2453	}

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