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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 3550

Last change on this file since 3550 was 3550, checked in by ldelgass, 11 years ago
Reset camera after orienting, so zoom reset can use the correct view direction
File size: 84.8 KB

Line
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	# FIXME: Don't know exactly why this "imgflush" is needed.
1088	# But this makes the "camera reset" below to work correctly.
1089	# I left this in because the axis labels are scaled too big.
1090	SendCmd "imgflush"
1091
1092	# Reset the camera and other view parameters
1093	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1094	$_arcball quaternion $q
1095	if {$_view(ortho)} {
1096	SendCmd "camera mode ortho"
1097	} else {
1098	SendCmd "camera mode persp"
1099	}
1100	DoRotate
1101	PanCamera
1102	Zoom reset
1103	SendCmd "camera reset"
1104	set _reset 0
1105	}
1106	# Actually write the commands to the server socket. If it fails, we don't
1107	# care. We're finished here.
1108	blt::busy hold $itk_component(hull)
1109	StopBufferingCommands
1110	blt::busy release $itk_component(hull)
1111	}
1112
1113	# ----------------------------------------------------------------------
1114	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1115	#
1116	# Returns a list of server IDs for the current datasets being displayed. This
1117	# is normally a single ID, but it might be a list of IDs if the current data
1118	# object has multiple components.
1119	# ----------------------------------------------------------------------
1120	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1121	set flag [lindex $args 0]
1122	switch -- $flag {
1123	"-all" {
1124	if { [llength $args] > 1 } {
1125	error "CurrentDatasets: can't specify dataobj after \"-all\""
1126	}
1127	set dlist [get -objects]
1128	}
1129	"-visible" {
1130	if { [llength $args] > 1 } {
1131	set dlist {}
1132	set args [lrange $args 1 end]
1133	foreach dataobj $args {
1134	if { [info exists _obj2ovride($dataobj-raise)] } {
1135	lappend dlist $dataobj
1136	}
1137	}
1138	} else {
1139	set dlist [get -visible]
1140	}
1141	}
1142	default {
1143	set dlist $args
1144	}
1145	}
1146	set rlist ""
1147	foreach dataobj $dlist {
1148	foreach comp [$dataobj components] {
1149	set tag $dataobj-$comp
1150	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1151	lappend rlist $tag
1152	}
1153	}
1154	}
1155	return $rlist
1156	}
1157
1158	# ----------------------------------------------------------------------
1159	# USAGE: Zoom in
1160	# USAGE: Zoom out
1161	# USAGE: Zoom reset
1162	#
1163	# Called automatically when the user clicks on one of the zoom
1164	# controls for this widget. Changes the zoom for the current view.
1165	# ----------------------------------------------------------------------
1166	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1167	switch -- $option {
1168	"in" {
1169	set _view(zoom) [expr {$_view(zoom)*1.25}]
1170	SendCmd "camera zoom $_view(zoom)"
1171	}
1172	"out" {
1173	set _view(zoom) [expr {$_view(zoom)*0.8}]
1174	SendCmd "camera zoom $_view(zoom)"
1175	}
1176	"reset" {
1177	array set _view {
1178	qw 0.853553
1179	qx -0.353553
1180	qy 0.353553
1181	qz 0.146447
1182	zoom 1.0
1183	xpan 0
1184	ypan 0
1185	}
1186	if { $_first != "" } {
1187	set location [$_first hints camera]
1188	if { $location != "" } {
1189	array set _view $location
1190	}
1191	}
1192	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1193	$_arcball quaternion $q
1194	DoRotate
1195	SendCmd "camera reset"
1196	}
1197	}
1198	}
1199
1200	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1201	set x $_view(xpan)
1202	set y $_view(ypan)
1203	SendCmd "camera pan $x $y"
1204	}
1205
1206
1207	# ----------------------------------------------------------------------
1208	# USAGE: Rotate click <x> <y>
1209	# USAGE: Rotate drag <x> <y>
1210	# USAGE: Rotate release <x> <y>
1211	#
1212	# Called automatically when the user clicks/drags/releases in the
1213	# plot area. Moves the plot according to the user's actions.
1214	# ----------------------------------------------------------------------
1215	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1216	switch -- $option {
1217	"click" {
1218	$itk_component(view) configure -cursor fleur
1219	set _click(x) $x
1220	set _click(y) $y
1221	}
1222	"drag" {
1223	if {[array size _click] == 0} {
1224	Rotate click $x $y
1225	} else {
1226	set w [winfo width $itk_component(view)]
1227	set h [winfo height $itk_component(view)]
1228	if {$w <= 0 \|\| $h <= 0} {
1229	return
1230	}
1231
1232	if {[catch {
1233	# this fails sometimes for no apparent reason
1234	set dx [expr {double($x-$_click(x))/$w}]
1235	set dy [expr {double($y-$_click(y))/$h}]
1236	}]} {
1237	return
1238	}
1239	if { $dx == 0 && $dy == 0 } {
1240	return
1241	}
1242	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1243	EventuallyRotate $q
1244	set _click(x) $x
1245	set _click(y) $y
1246	}
1247	}
1248	"release" {
1249	Rotate drag $x $y
1250	$itk_component(view) configure -cursor ""
1251	catch {unset _click}
1252	}
1253	default {
1254	error "bad option \"$option\": should be click, drag, release"
1255	}
1256	}
1257	}
1258
1259	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1260	foreach tag [CurrentDatasets -visible] {
1261	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1262	}
1263	}
1264
1265	# ----------------------------------------------------------------------
1266	# USAGE: $this Pan click x y
1267	# $this Pan drag x y
1268	# $this Pan release x y
1269	#
1270	# Called automatically when the user clicks on one of the zoom
1271	# controls for this widget. Changes the zoom for the current view.
1272	# ----------------------------------------------------------------------
1273	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1274	switch -- $option {
1275	"set" {
1276	set w [winfo width $itk_component(view)]
1277	set h [winfo height $itk_component(view)]
1278	set x [expr $x / double($w)]
1279	set y [expr $y / double($h)]
1280	set _view(xpan) [expr $_view(xpan) + $x]
1281	set _view(ypan) [expr $_view(ypan) + $y]
1282	PanCamera
1283	return
1284	}
1285	"click" {
1286	set _click(x) $x
1287	set _click(y) $y
1288	$itk_component(view) configure -cursor hand1
1289	}
1290	"drag" {
1291	if { ![info exists _click(x)] } {
1292	set _click(x) $x
1293	}
1294	if { ![info exists _click(y)] } {
1295	set _click(y) $y
1296	}
1297	set w [winfo width $itk_component(view)]
1298	set h [winfo height $itk_component(view)]
1299	set dx [expr ($_click(x) - $x)/double($w)]
1300	set dy [expr ($_click(y) - $y)/double($h)]
1301	set _click(x) $x
1302	set _click(y) $y
1303	set _view(xpan) [expr $_view(xpan) - $dx]
1304	set _view(ypan) [expr $_view(ypan) - $dy]
1305	PanCamera
1306	}
1307	"release" {
1308	Pan drag $x $y
1309	$itk_component(view) configure -cursor ""
1310	}
1311	default {
1312	error "unknown option \"$option\": should set, click, drag, or release"
1313	}
1314	}
1315	}
1316
1317	# ----------------------------------------------------------------------
1318	# USAGE: InitSettings <what> ?<value>?
1319	#
1320	# Used internally to update rendering settings whenever parameters
1321	# change in the popup settings panel. Sends the new settings off
1322	# to the back end.
1323	# ----------------------------------------------------------------------
1324	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1325	foreach spec $args {
1326	if { [info exists _settings($_first-$spec)] } {
1327	# Reset global setting with dataobj specific setting
1328	set _settings($spec) $_settings($_first-$spec)
1329	}
1330	AdjustSetting $spec
1331	}
1332	}
1333
1334	#
1335	# AdjustSetting --
1336	#
1337	# Changes/updates a specific setting in the widget. There are
1338	# usually user-setable option. Commands are sent to the render
1339	# server.
1340	#
1341	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1342	if { ![isconnected] } {
1343	return
1344	}
1345	switch -- $what {
1346	"volumeOpacity" {
1347	set val $_settings(volumeOpacity)
1348	set sval [expr { 0.01 * double($val) }]
1349	SendCmd "polydata opacity $sval"
1350	}
1351	"volumeWireframe" {
1352	set bool $_settings(volumeWireframe)
1353	SendCmd "polydata wireframe $bool"
1354	}
1355	"volumeVisible" {
1356	set bool $_settings(volumeVisible)
1357	SendCmd "polydata visible $bool"
1358	if { $bool } {
1359	Rappture::Tooltip::for $itk_component(volume) \
1360	"Hide the volume"
1361	} else {
1362	Rappture::Tooltip::for $itk_component(volume) \
1363	"Show the volume"
1364	}
1365	}
1366	"volumeLighting" {
1367	set bool $_settings(volumeLighting)
1368	SendCmd "polydata lighting $bool"
1369	}
1370	"volumeEdges" {
1371	set bool $_settings(volumeEdges)
1372	SendCmd "polydata edges $bool"
1373	}
1374	"axesVisible" {
1375	set bool $_settings(axesVisible)
1376	SendCmd "axis visible all $bool"
1377	}
1378	"axisLabelsVisible" {
1379	set bool $_settings(axisLabelsVisible)
1380	SendCmd "axis labels all $bool"
1381	}
1382	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1383	set axis [string tolower [string range $what 4 4]]
1384	set bool $_settings($what)
1385	SendCmd "axis grid $axis $bool"
1386	}
1387	"axis-mode" {
1388	set mode [$itk_component(axismode) value]
1389	set mode [$itk_component(axismode) translate $mode]
1390	set _settings($what) $mode
1391	SendCmd "axis flymode $mode"
1392	}
1393	"cutplaneEdges" {
1394	set bool $_settings($what)
1395	SendCmd "cutplane edges $bool"
1396	}
1397	"cutplaneVisible" {
1398	set bool $_settings($what)
1399	SendCmd "cutplane visible $bool"
1400	}
1401	"cutplaneWireframe" {
1402	set bool $_settings($what)
1403	SendCmd "cutplane wireframe $bool"
1404	}
1405	"cutplaneLighting" {
1406	set bool $_settings($what)
1407	SendCmd "cutplane lighting $bool"
1408	}
1409	"cutplaneOpacity" {
1410	set val $_settings($what)
1411	set sval [expr { 0.01 * double($val) }]
1412	SendCmd "cutplane opacity $sval"
1413	}
1414	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1415	set axis [string tolower [string range $what 8 8]]
1416	set bool $_settings($what)
1417	if { $bool } {
1418	$itk_component(${axis}CutScale) configure -state normal \
1419	-troughcolor white
1420	} else {
1421	$itk_component(${axis}CutScale) configure -state disabled \
1422	-troughcolor grey82
1423	}
1424	SendCmd "cutplane axis $axis $bool"
1425	}
1426	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1427	set axis [string tolower [string range $what 8 8]]
1428	set pos [expr $_settings($what) * 0.01]
1429	SendCmd "cutplane slice ${axis} ${pos}"
1430	set _cutplanePending 0
1431	}
1432	"streamlinesSeedsVisible" {
1433	set bool $_settings($what)
1434	SendCmd "streamlines seed visible $bool"
1435	}
1436	"streamlinesNumSeeds" {
1437	set density $_settings($what)
1438	EventuallyReseed $density
1439	}
1440	"streamlinesVisible" {
1441	set bool $_settings($what)
1442	SendCmd "streamlines visible $bool"
1443	if { $bool } {
1444	Rappture::Tooltip::for $itk_component(streamlines) \
1445	"Hide the streamlines"
1446	} else {
1447	Rappture::Tooltip::for $itk_component(streamlines) \
1448	"Show the streamlines"
1449	}
1450	}
1451	"streamlinesMode" {
1452	set mode [$itk_component(streammode) value]
1453	set _settings(streamlinesMode) $mode
1454	switch -- $mode {
1455	"lines" {
1456	SendCmd "streamlines lines"
1457	}
1458	"ribbons" {
1459	SendCmd "streamlines ribbons 3 0"
1460	}
1461	"tubes" {
1462	SendCmd "streamlines tubes 5 3"
1463	}
1464	}
1465	}
1466	"streamlinesColormap" {
1467	set colormap [$itk_component(colormap) value]
1468	set _settings(streamlinesColormap) $colormap
1469	foreach dataset [CurrentDatasets -visible $_first] {
1470	foreach {dataobj comp} [split $dataset -] break
1471	ChangeColormap $dataobj $comp $colormap
1472	}
1473	set _legendPending 1
1474	}
1475	"streamlinesOpacity" {
1476	set val $_settings(streamlinesOpacity)
1477	set sval [expr { 0.01 * double($val) }]
1478	SendCmd "streamlines opacity $sval"
1479	}
1480	"streamlinesScale" {
1481	set val $_settings(streamlinesScale)
1482	set sval [expr { 0.01 * double($val) }]
1483	SendCmd "streamlines scale $sval $sval $sval"
1484	}
1485	"streamlinesLighting" {
1486	set bool $_settings(streamlinesLighting)
1487	SendCmd "streamlines lighting $bool"
1488	}
1489	"field" {
1490	set label [$itk_component(field) value]
1491	set fname [$itk_component(field) translate $label]
1492	set _settings(field) $fname
1493	if { [info exists _fields($fname)] } {
1494	foreach { label units components } $_fields($fname) break
1495	if { $components > 1 } {
1496	set _colorMode vmag
1497	} else {
1498	set _colorMode scalar
1499	}
1500	set _curFldName $fname
1501	set _curFldLabel $label
1502	} else {
1503	puts stderr "unknown field \"$fname\""
1504	return
1505	}
1506	# Get the new limits because the field changed.
1507	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1508	SendCmd "streamlines colormode $_colorMode $_curFldName"
1509	SendCmd "cutplane colormode $_colorMode $_curFldName"
1510	DrawLegend
1511	}
1512	default {
1513	error "don't know how to fix $what"
1514	}
1515	}
1516	}
1517
1518	#
1519	# RequestLegend --
1520	#
1521	# Request a new legend from the server. The size of the legend
1522	# is determined from the height of the canvas. It will be rotated
1523	# to be vertical when drawn.
1524	#
1525	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1526	set font "Arial 8"
1527	set lineht [font metrics $font -linespace]
1528	set c $itk_component(legend)
1529	set w 12
1530	set h [expr {$_height - 3 * ($lineht + 2)}]
1531	if { $h < 1} {
1532	return
1533	}
1534	# Set the legend on the first streamlines dataset.
1535	foreach dataset [CurrentDatasets -visible $_first] {
1536	foreach {dataobj comp} [split $dataset -] break
1537	if { [info exists _dataset2style($dataset)] } {
1538	SendCmdNoWait \
1539	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1540	break;
1541	}
1542	}
1543	}
1544
1545	#
1546	# ChangeColormap --
1547	#
1548	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1549	set tag $dataobj-$comp
1550	if { ![info exist _style($tag)] } {
1551	error "no initial colormap"
1552	}
1553	array set style $_style($tag)
1554	set style(-color) $color
1555	set _style($tag) [array get style]
1556	SetColormap $dataobj $comp
1557	}
1558
1559	#
1560	# SetColormap --
1561	#
1562	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1563	array set style {
1564	-color BCGYR
1565	-levels 6
1566	-opacity 1.0
1567	}
1568	set tag $dataobj-$comp
1569	if { ![info exists _initialStyle($tag)] } {
1570	# Save the initial component style.
1571	set _initialStyle($tag) [$dataobj style $comp]
1572	}
1573
1574	# Override defaults with initial style defined in xml.
1575	array set style $_initialStyle($tag)
1576
1577	if { ![info exists _style($tag)] } {
1578	set _style($tag) [array get style]
1579	}
1580	# Override initial style with current style.
1581	array set style $_style($tag)
1582
1583	set name "$style(-color):$style(-levels):$style(-opacity)"
1584	if { ![info exists _colormaps($name)] } {
1585	BuildColormap $name [array get style]
1586	set _colormaps($name) 1
1587	}
1588	if { ![info exists _dataset2style($tag)] \|\|
1589	$_dataset2style($tag) != $name } {
1590	SendCmd "streamlines colormap $name $tag"
1591	SendCmd "cutplane colormap $name $tag"
1592	set _dataset2style($tag) $name
1593	}
1594	}
1595
1596
1597	#
1598	# BuildColormap --
1599	#
1600	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1601	array set style $styles
1602	set cmap [ColorsToColormap $style(-color)]
1603	if { [llength $cmap] == 0 } {
1604	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1605	}
1606	if { ![info exists _settings(volumeOpacity)] } {
1607	set _settings(volumeOpacity) $style(-opacity)
1608	}
1609	set max $_settings(volumeOpacity)
1610
1611	set wmap "0.0 1.0 1.0 1.0"
1612	SendCmd "colormap add $name { $cmap } { $wmap }"
1613	}
1614
1615	# ----------------------------------------------------------------------
1616	# CONFIGURATION OPTION: -plotbackground
1617	# ----------------------------------------------------------------------
1618	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1619	if { [isconnected] } {
1620	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1621	SendCmd "screen bgcolor $r $g $b"
1622	}
1623	}
1624
1625	# ----------------------------------------------------------------------
1626	# CONFIGURATION OPTION: -plotforeground
1627	# ----------------------------------------------------------------------
1628	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1629	if { [isconnected] } {
1630	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1631	#fix this!
1632	#SendCmd "color background $r $g $b"
1633	}
1634	}
1635
1636	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1637
1638	set fg [option get $itk_component(hull) font Font]
1639	#set bfg [option get $itk_component(hull) boldFont Font]
1640
1641	set inner [$itk_component(main) insert end \
1642	-title "Volume Settings" \
1643	-icon [Rappture::icon volume-on]]
1644	$inner configure -borderwidth 4
1645
1646	checkbutton $inner.volume \
1647	-text "Show Volume" \
1648	-variable [itcl::scope _settings(volumeVisible)] \
1649	-command [itcl::code $this AdjustSetting volumeVisible] \
1650	-font "Arial 9"
1651
1652	checkbutton $inner.wireframe \
1653	-text "Show Wireframe" \
1654	-variable [itcl::scope _settings(volumeWireframe)] \
1655	-command [itcl::code $this AdjustSetting volumeWireframe] \
1656	-font "Arial 9"
1657
1658	checkbutton $inner.lighting \
1659	-text "Enable Lighting" \
1660	-variable [itcl::scope _settings(volumeLighting)] \
1661	-command [itcl::code $this AdjustSetting volumeLighting] \
1662	-font "Arial 9"
1663
1664	checkbutton $inner.edges \
1665	-text "Show Edges" \
1666	-variable [itcl::scope _settings(volumeEdges)] \
1667	-command [itcl::code $this AdjustSetting volumeEdges] \
1668	-font "Arial 9"
1669
1670	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1671	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1672	-variable [itcl::scope _settings(volumeOpacity)] \
1673	-width 10 \
1674	-showvalue off \
1675	-command [itcl::code $this AdjustSetting volumeOpacity]
1676
1677	blt::table $inner \
1678	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1679	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1680	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1681	3,0 $inner.opacity_l -anchor w -pady 2 \
1682	3,1 $inner.opacity -fill x -pady 2
1683
1684	blt::table configure $inner r* c* -resize none
1685	blt::table configure $inner r4 c1 -resize expand
1686	}
1687
1688
1689	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1690
1691	set fg [option get $itk_component(hull) font Font]
1692	#set bfg [option get $itk_component(hull) boldFont Font]
1693
1694	set inner [$itk_component(main) insert end \
1695	-title "Streams Settings" \
1696	-icon [Rappture::icon streamlines-on]]
1697	$inner configure -borderwidth 4
1698
1699	checkbutton $inner.streamlines \
1700	-text "Show Streamlines" \
1701	-variable [itcl::scope _settings(streamlinesVisible)] \
1702	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1703	-font "Arial 9"
1704
1705	checkbutton $inner.lighting \
1706	-text "Enable Lighting" \
1707	-variable [itcl::scope _settings(streamlinesLighting)] \
1708	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1709	-font "Arial 9"
1710
1711	checkbutton $inner.seeds \
1712	-text "Show Seeds" \
1713	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1714	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1715	-font "Arial 9"
1716
1717	label $inner.mode_l -text "Mode" -font "Arial 9"
1718	itk_component add streammode {
1719	Rappture::Combobox $inner.mode -width 10 -editable no
1720	}
1721	$inner.mode choices insert end \
1722	"lines" "lines" \
1723	"ribbons" "ribbons" \
1724	"tubes" "tubes"
1725	$itk_component(streammode) value $_settings(streamlinesMode)
1726	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1727
1728	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1729	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1730	-variable [itcl::scope _settings(streamlinesOpacity)] \
1731	-width 10 \
1732	-showvalue off \
1733	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1734
1735	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1736	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1737	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1738	-width 10 \
1739	-showvalue on \
1740	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1741
1742	label $inner.scale_l -text "Scale" -font "Arial 9"
1743	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1744	-variable [itcl::scope _settings(streamlinesScale)] \
1745	-width 10 \
1746	-showvalue off \
1747	-command [itcl::code $this AdjustSetting streamlinesScale]
1748
1749	label $inner.field_l -text "Field" -font "Arial 9"
1750	itk_component add field {
1751	Rappture::Combobox $inner.field -width 10 -editable no
1752	}
1753	bind $inner.field <<Value>> \
1754	[itcl::code $this AdjustSetting field]
1755
1756	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1757	itk_component add colormap {
1758	Rappture::Combobox $inner.colormap -width 10 -editable no
1759	}
1760	$inner.colormap choices insert end \
1761	"BCGYR" "BCGYR" \
1762	"BGYOR" "BGYOR" \
1763	"blue" "blue" \
1764	"blue-to-brown" "blue-to-brown" \
1765	"blue-to-orange" "blue-to-orange" \
1766	"blue-to-grey" "blue-to-grey" \
1767	"green-to-magenta" "green-to-magenta" \
1768	"greyscale" "greyscale" \
1769	"nanohub" "nanohub" \
1770	"rainbow" "rainbow" \
1771	"spectral" "spectral" \
1772	"ROYGB" "ROYGB" \
1773	"RYGCB" "RYGCB" \
1774	"brown-to-blue" "brown-to-blue" \
1775	"grey-to-blue" "grey-to-blue" \
1776	"orange-to-blue" "orange-to-blue"
1777
1778	$itk_component(colormap) value "BCGYR"
1779	bind $inner.colormap <<Value>> \
1780	[itcl::code $this AdjustSetting streamlinesColormap]
1781
1782	blt::table $inner \
1783	0,0 $inner.field_l -anchor w -pady 2 \
1784	0,1 $inner.field -fill x -pady 2 \
1785	1,0 $inner.colormap_l -anchor w -pady 2 \
1786	1,1 $inner.colormap -fill x -pady 2 \
1787	2,0 $inner.mode_l -anchor w -pady 2 \
1788	2,1 $inner.mode -fill x -pady 2 \
1789	3,0 $inner.opacity_l -anchor w -pady 2 \
1790	3,1 $inner.opacity -fill x -pady 2 \
1791	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1792	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1793	7,0 $inner.density_l -anchor w -pady 2 \
1794	7,1 $inner.density -fill x -pady 2 \
1795
1796	blt::table configure $inner r* c* -resize none
1797	blt::table configure $inner r10 c1 c2 -resize expand
1798	}
1799
1800	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1801
1802	set fg [option get $itk_component(hull) font Font]
1803	#set bfg [option get $itk_component(hull) boldFont Font]
1804
1805	set inner [$itk_component(main) insert end \
1806	-title "Axis Settings" \
1807	-icon [Rappture::icon axis1]]
1808	$inner configure -borderwidth 4
1809
1810	checkbutton $inner.visible \
1811	-text "Show Axes" \
1812	-variable [itcl::scope _settings(axesVisible)] \
1813	-command [itcl::code $this AdjustSetting axesVisible] \
1814	-font "Arial 9"
1815
1816	checkbutton $inner.labels \
1817	-text "Show Axis Labels" \
1818	-variable [itcl::scope _settings(axisLabelsVisible)] \
1819	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1820	-font "Arial 9"
1821
1822	checkbutton $inner.xgrid \
1823	-text "Show X Grid" \
1824	-variable [itcl::scope _settings(axisXGrid)] \
1825	-command [itcl::code $this AdjustSetting axisXGrid] \
1826	-font "Arial 9"
1827	checkbutton $inner.ygrid \
1828	-text "Show Y Grid" \
1829	-variable [itcl::scope _settings(axisYGrid)] \
1830	-command [itcl::code $this AdjustSetting axisYGrid] \
1831	-font "Arial 9"
1832	checkbutton $inner.zgrid \
1833	-text "Show Z Grid" \
1834	-variable [itcl::scope _settings(axisZGrid)] \
1835	-command [itcl::code $this AdjustSetting axisZGrid] \
1836	-font "Arial 9"
1837
1838	label $inner.mode_l -text "Mode" -font "Arial 9"
1839
1840	itk_component add axismode {
1841	Rappture::Combobox $inner.mode -width 10 -editable no
1842	}
1843	$inner.mode choices insert end \
1844	"static_triad" "static" \
1845	"closest_triad" "closest" \
1846	"furthest_triad" "furthest" \
1847	"outer_edges" "outer"
1848	$itk_component(axismode) value "static"
1849	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1850
1851	blt::table $inner \
1852	0,0 $inner.visible -anchor w -cspan 2 \
1853	1,0 $inner.labels -anchor w -cspan 2 \
1854	2,0 $inner.xgrid -anchor w -cspan 2 \
1855	3,0 $inner.ygrid -anchor w -cspan 2 \
1856	4,0 $inner.zgrid -anchor w -cspan 2 \
1857	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1858	6,0 $inner.mode -fill x -cspan 2
1859
1860	blt::table configure $inner r* c* -resize none
1861	blt::table configure $inner r7 c1 -resize expand
1862	}
1863
1864
1865	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1866	set inner [$itk_component(main) insert end \
1867	-title "Camera Settings" \
1868	-icon [Rappture::icon camera]]
1869	$inner configure -borderwidth 4
1870
1871	label $inner.view_l -text "view" -font "Arial 9"
1872	set f [frame $inner.view]
1873	foreach side { front back left right top bottom } {
1874	button $f.$side -image [Rappture::icon view$side] \
1875	-command [itcl::code $this SetOrientation $side]
1876	Rappture::Tooltip::for $f.$side "Change the view to $side"
1877	pack $f.$side -side left
1878	}
1879
1880	blt::table $inner \
1881	0,0 $inner.view_l -anchor e -pady 2 \
1882	0,1 $inner.view -anchor w -pady 2
1883
1884	set labels { qx qy qz qw xpan ypan zoom }
1885	set row 1
1886	foreach tag $labels {
1887	label $inner.${tag}label -text $tag -font "Arial 9"
1888	entry $inner.${tag} -font "Arial 9" -bg white \
1889	-textvariable [itcl::scope _view($tag)]
1890	bind $inner.${tag} <KeyPress-Return> \
1891	[itcl::code $this camera set ${tag}]
1892	blt::table $inner \
1893	$row,0 $inner.${tag}label -anchor e -pady 2 \
1894	$row,1 $inner.${tag} -anchor w -pady 2
1895	blt::table configure $inner r$row -resize none
1896	incr row
1897	}
1898	checkbutton $inner.ortho \
1899	-text "Orthographic Projection" \
1900	-variable [itcl::scope _view(ortho)] \
1901	-command [itcl::code $this camera set ortho] \
1902	-font "Arial 9"
1903	blt::table $inner \
1904	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1905	blt::table configure $inner r$row -resize none
1906	incr row
1907
1908	blt::table configure $inner c* r* -resize none
1909	blt::table configure $inner c2 -resize expand
1910	blt::table configure $inner r$row -resize expand
1911	}
1912
1913	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1914
1915	set fg [option get $itk_component(hull) font Font]
1916
1917	set inner [$itk_component(main) insert end \
1918	-title "Cutplane Settings" \
1919	-icon [Rappture::icon cutbutton]]
1920
1921	$inner configure -borderwidth 4
1922
1923	checkbutton $inner.visible \
1924	-text "Show Cutplanes" \
1925	-variable [itcl::scope _settings(cutplaneVisible)] \
1926	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1927	-font "Arial 9"
1928
1929	checkbutton $inner.wireframe \
1930	-text "Show Wireframe" \
1931	-variable [itcl::scope _settings(cutplaneWireframe)] \
1932	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1933	-font "Arial 9"
1934
1935	checkbutton $inner.lighting \
1936	-text "Enable Lighting" \
1937	-variable [itcl::scope _settings(cutplaneLighting)] \
1938	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1939	-font "Arial 9"
1940
1941	checkbutton $inner.edges \
1942	-text "Show Edges" \
1943	-variable [itcl::scope _settings(cutplaneEdges)] \
1944	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1945	-font "Arial 9"
1946
1947	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1948	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1949	-variable [itcl::scope _settings(cutplaneOpacity)] \
1950	-width 10 \
1951	-showvalue off \
1952	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1953	$inner.opacity set $_settings(cutplaneOpacity)
1954
1955	# X-value slicer...
1956	itk_component add xCutButton {
1957	Rappture::PushButton $inner.xbutton \
1958	-onimage [Rappture::icon x-cutplane-red] \
1959	-offimage [Rappture::icon x-cutplane-red] \
1960	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1961	-variable [itcl::scope _settings(cutplaneXVisible)]
1962	}
1963	Rappture::Tooltip::for $itk_component(xCutButton) \
1964	"Toggle the X-axis cutplane on/off"
1965	$itk_component(xCutButton) select
1966
1967	itk_component add xCutScale {
1968	::scale $inner.xval -from 100 -to 0 \
1969	-width 10 -orient vertical -showvalue yes \
1970	-borderwidth 1 -highlightthickness 0 \
1971	-command [itcl::code $this EventuallySetCutplane x] \
1972	-variable [itcl::scope _settings(cutplaneXPosition)] \
1973	-foreground red3 -font "Arial 9 bold"
1974	} {
1975	usual
1976	ignore -borderwidth -highlightthickness -foreground -font
1977	}
1978	# Set the default cutplane value before disabling the scale.
1979	$itk_component(xCutScale) set 50
1980	$itk_component(xCutScale) configure -state disabled
1981	Rappture::Tooltip::for $itk_component(xCutScale) \
1982	"@[itcl::code $this Slice tooltip x]"
1983
1984	# Y-value slicer...
1985	itk_component add yCutButton {
1986	Rappture::PushButton $inner.ybutton \
1987	-onimage [Rappture::icon y-cutplane-green] \
1988	-offimage [Rappture::icon y-cutplane-green] \
1989	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1990	-variable [itcl::scope _settings(cutplaneYVisible)]
1991	}
1992	Rappture::Tooltip::for $itk_component(yCutButton) \
1993	"Toggle the Y-axis cutplane on/off"
1994	$itk_component(yCutButton) select
1995
1996	itk_component add yCutScale {
1997	::scale $inner.yval -from 100 -to 0 \
1998	-width 10 -orient vertical -showvalue yes \
1999	-borderwidth 1 -highlightthickness 0 \
2000	-command [itcl::code $this EventuallySetCutplane y] \
2001	-variable [itcl::scope _settings(cutplaneYPosition)] \
2002	-foreground green3 -font "Arial 9 bold"
2003	} {
2004	usual
2005	ignore -borderwidth -highlightthickness -foreground -font
2006	}
2007	Rappture::Tooltip::for $itk_component(yCutScale) \
2008	"@[itcl::code $this Slice tooltip y]"
2009	# Set the default cutplane value before disabling the scale.
2010	$itk_component(yCutScale) set 50
2011	$itk_component(yCutScale) configure -state disabled
2012
2013	# Z-value slicer...
2014	itk_component add zCutButton {
2015	Rappture::PushButton $inner.zbutton \
2016	-onimage [Rappture::icon z-cutplane-blue] \
2017	-offimage [Rappture::icon z-cutplane-blue] \
2018	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
2019	-variable [itcl::scope _settings(cutplaneZVisible)]
2020	}
2021	Rappture::Tooltip::for $itk_component(zCutButton) \
2022	"Toggle the Z-axis cutplane on/off"
2023	$itk_component(zCutButton) select
2024
2025	itk_component add zCutScale {
2026	::scale $inner.zval -from 100 -to 0 \
2027	-width 10 -orient vertical -showvalue yes \
2028	-borderwidth 1 -highlightthickness 0 \
2029	-command [itcl::code $this EventuallySetCutplane z] \
2030	-variable [itcl::scope _settings(cutplaneZPosition)] \
2031	-foreground blue3 -font "Arial 9 bold"
2032	} {
2033	usual
2034	ignore -borderwidth -highlightthickness -foreground -font
2035	}
2036	$itk_component(zCutScale) set 50
2037	$itk_component(zCutScale) configure -state disabled
2038	#$itk_component(zCutScale) configure -state disabled
2039	Rappture::Tooltip::for $itk_component(zCutScale) \
2040	"@[itcl::code $this Slice tooltip z]"
2041
2042	blt::table $inner \
2043	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2044	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2045	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2046	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2047	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2048	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2049	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2050	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2051	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2052	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2053	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2054
2055	blt::table configure $inner r* c* -resize none
2056	blt::table configure $inner r7 c4 -resize expand
2057	}
2058
2059
2060
2061	#
2062	# camera --
2063	#
2064	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2065	switch -- $option {
2066	"show" {
2067	puts [array get _view]
2068	}
2069	"set" {
2070	set who [lindex $args 0]
2071	set x $_view($who)
2072	set code [catch { string is double $x } result]
2073	if { $code != 0 \|\| !$result } {
2074	return
2075	}
2076	switch -- $who {
2077	"ortho" {
2078	if {$_view(ortho)} {
2079	SendCmd "camera mode ortho"
2080	} else {
2081	SendCmd "camera mode persp"
2082	}
2083	}
2084	"xpan" - "ypan" {
2085	PanCamera
2086	}
2087	"qx" - "qy" - "qz" - "qw" {
2088	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2089	$_arcball quaternion $q
2090	EventuallyRotate $q
2091	}
2092	"zoom" {
2093	SendCmd "camera zoom $_view(zoom)"
2094	}
2095	}
2096	}
2097	}
2098	}
2099
2100	itcl::body Rappture::VtkStreamlinesViewer::ConvertToVtkData { dataobj comp } {
2101	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
2102	set values [$dataobj values $comp]
2103	append out "# vtk DataFile Version 2.0 \n"
2104	append out "Test data \n"
2105	append out "ASCII \n"
2106	append out "DATASET STRUCTURED_POINTS \n"
2107	append out "DIMENSIONS $xN $yN 1 \n"
2108	append out "ORIGIN 0 0 0 \n"
2109	append out "SPACING 1 1 1 \n"
2110	append out "POINT_DATA [expr $xN * $yN] \n"
2111	append out "SCALARS field float 1 \n"
2112	append out "LOOKUP_TABLE default \n"
2113	append out [join $values "\n"]
2114	append out "\n"
2115	return $out
2116	}
2117
2118
2119	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2120	set bytes ""
2121	foreach dataobj [get] {
2122	foreach comp [$dataobj components] {
2123	set tag $dataobj-$comp
2124	#set contents [ConvertToVtkData $dataobj $comp]
2125	set contents [$dataobj blob $comp]
2126	append bytes "$contents\n\n"
2127	}
2128	}
2129	return [list .vtk $bytes]
2130	}
2131
2132	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2133	if { [image width $_image(download)] > 0 &&
2134	[image height $_image(download)] > 0 } {
2135	set bytes [$_image(download) data -format "jpeg -quality 100"]
2136	set bytes [Rappture::encoding::decode -as b64 $bytes]
2137	return [list .jpg $bytes]
2138	}
2139	return ""
2140	}
2141
2142	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2143	Rappture::Balloon $popup \
2144	-title "[Rappture::filexfer::label downloadWord] as..."
2145	set inner [$popup component inner]
2146	label $inner.summary -text "" -anchor w
2147	radiobutton $inner.vtk_button -text "VTK data file" \
2148	-variable [itcl::scope _downloadPopup(format)] \
2149	-font "Helvetica 9 " \
2150	-value vtk
2151	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2152	radiobutton $inner.image_button -text "Image File" \
2153	-variable [itcl::scope _downloadPopup(format)] \
2154	-value image
2155	Rappture::Tooltip::for $inner.image_button \
2156	"Save as digital image."
2157
2158	button $inner.ok -text "Save" \
2159	-highlightthickness 0 -pady 2 -padx 3 \
2160	-command $command \
2161	-compound left \
2162	-image [Rappture::icon download]
2163
2164	button $inner.cancel -text "Cancel" \
2165	-highlightthickness 0 -pady 2 -padx 3 \
2166	-command [list $popup deactivate] \
2167	-compound left \
2168	-image [Rappture::icon cancel]
2169
2170	blt::table $inner \
2171	0,0 $inner.summary -cspan 2 \
2172	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2173	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2174	4,1 $inner.cancel -width .9i -fill y \
2175	4,0 $inner.ok -padx 2 -width .9i -fill y
2176	blt::table configure $inner r3 -height 4
2177	blt::table configure $inner r4 -pady 4
2178	raise $inner.image_button
2179	$inner.vtk_button invoke
2180	return $inner
2181	}
2182
2183	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2184	# Parse style string.
2185	set tag $dataobj-$comp
2186	set style [$dataobj style $comp]
2187	array set settings {
2188	-color \#808080
2189	-edges 0
2190	-edgecolor black
2191	-linewidth 1.0
2192	-opacity 0.4
2193	-wireframe 0
2194	-lighting 1
2195	-seeds 1
2196	-seedcolor white
2197	-visible 1
2198	}
2199	if { $dataobj != $_first } {
2200	set settings(-opacity) 1
2201	}
2202	array set settings $style
2203	SendCmd "streamlines add $tag"
2204	SendCmd "streamlines seed visible off $tag"
2205	set seeds [$dataobj hints seeds]
2206	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2207	set length [string length $seeds]
2208	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2209	SendCmd "$seeds"
2210	set _seeds($dataobj) 1
2211	}
2212	SendCmd "cutplane add $tag"
2213	SendCmd "polydata add $tag"
2214	set _settings(volumeEdges) $settings(-edges)
2215	set _settings(volumeLighting) $settings(-lighting)
2216	set _settings(volumeOpacity) $settings(-opacity)
2217	set _settings(volumeWireframe) $settings(-wireframe)
2218	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2219	SetColormap $dataobj $comp
2220	}
2221
2222	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2223	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2224	return 0
2225	}
2226	return 1
2227	}
2228
2229	# ----------------------------------------------------------------------
2230	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2231	#
2232	# Invoked automatically whenever the "legend" command comes in from
2233	# the rendering server. Indicates that binary image data with the
2234	# specified <size> will follow.
2235	# ----------------------------------------------------------------------
2236	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2237	set _legendPending 0
2238	set _title $title
2239	regsub {\(mag\)} $title "" _title
2240	if { [IsConnected] } {
2241	set bytes [ReceiveBytes $size]
2242	if { ![info exists _image(legend)] } {
2243	set _image(legend) [image create photo]
2244	}
2245	$_image(legend) configure -data $bytes
2246	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2247	if { [catch {DrawLegend} errs] != 0 } {
2248	puts stderr errs=$errs
2249	}
2250	}
2251	}
2252
2253	#
2254	# DrawLegend --
2255	#
2256	# Draws the legend in it's own canvas which resides to the right
2257	# of the contour plot area.
2258	#
2259	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2260	set fname $_curFldName
2261	set c $itk_component(view)
2262	set w [winfo width $c]
2263	set h [winfo height $c]
2264	set font "Arial 8"
2265	set lineht [font metrics $font -linespace]
2266
2267	if { [info exists _fields($fname)] } {
2268	foreach { title units } $_fields($fname) break
2269	if { $units != "" } {
2270	set title [format "%s (%s)" $title $units]
2271	}
2272	} else {
2273	set title $fname
2274	}
2275	if { $_settings(legendVisible) } {
2276	set x [expr $w - 2]
2277	if { [$c find withtag "legend"] == "" } {
2278	set y 2
2279	$c create text $x $y \
2280	-anchor ne \
2281	-fill $itk_option(-plotforeground) -tags "title legend" \
2282	-font $font
2283	incr y $lineht
2284	$c create text $x $y \
2285	-anchor ne \
2286	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2287	-font $font
2288	incr y $lineht
2289	$c create image $x $y \
2290	-anchor ne \
2291	-image $_image(legend) -tags "colormap legend"
2292	$c create text $x [expr {$h-2}] \
2293	-anchor se \
2294	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2295	-font $font
2296	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2297	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2298	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2299	}
2300	$c bind title <ButtonPress> [itcl::code $this Combo post]
2301	$c bind title <Enter> [itcl::code $this Combo activate]
2302	$c bind title <Leave> [itcl::code $this Combo deactivate]
2303	# Reset the item coordinates according the current size of the plot.
2304	$c itemconfigure title -text $title
2305	if { [info exists _limits($_curFldName)] } {
2306	foreach {vmin vmax} $_limits($_curFldName) break
2307	$c itemconfigure vmin -text [format %g $vmin]
2308	$c itemconfigure vmax -text [format %g $vmax]
2309	}
2310	set y 2
2311	$c coords title $x $y
2312	incr y $lineht
2313	$c coords vmax $x $y
2314	incr y $lineht
2315	$c coords colormap $x $y
2316	$c coords vmin $x [expr {$h - 2}]
2317	}
2318	}
2319
2320	#
2321	# EnterLegend --
2322	#
2323	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2324	SetLegendTip $x $y
2325	}
2326
2327	#
2328	# MotionLegend --
2329	#
2330	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2331	Rappture::Tooltip::tooltip cancel
2332	set c $itk_component(view)
2333	SetLegendTip $x $y
2334	}
2335
2336	#
2337	# LeaveLegend --
2338	#
2339	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2340	Rappture::Tooltip::tooltip cancel
2341	.rappturetooltip configure -icon ""
2342	}
2343
2344	#
2345	# SetLegendTip --
2346	#
2347	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2348	set c $itk_component(view)
2349	set w [winfo width $c]
2350	set h [winfo height $c]
2351	set font "Arial 8"
2352	set lineht [font metrics $font -linespace]
2353
2354	set imgHeight [image height $_image(legend)]
2355	set coords [$c coords colormap]
2356	set imgX [expr $w - [image width $_image(legend)] - 2]
2357	set imgY [expr $y - 2 * ($lineht + 2)]
2358
2359	if { [info exists _fields($_title)] } {
2360	foreach { title units } $_fields($_title) break
2361	if { $units != "" } {
2362	set title [format "%s (%s)" $title $units]
2363	}
2364	} else {
2365	set title $_title
2366	}
2367	# Make a swatch of the selected color
2368	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2369	#puts stderr "out of range: $imgY"
2370	return
2371	}
2372	if { ![info exists _image(swatch)] } {
2373	set _image(swatch) [image create photo -width 24 -height 24]
2374	}
2375	set color [eval format "\#%02x%02x%02x" $pixel]
2376	$_image(swatch) put black -to 0 0 23 23
2377	$_image(swatch) put $color -to 1 1 22 22
2378	.rappturetooltip configure -icon $_image(swatch)
2379
2380	# Compute the value of the point
2381	if { [info exists _limits($_curFldName)] } {
2382	foreach {vmin vmax} $_limits($_curFldName) break
2383	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2384	set value [expr $t * ($vmax - $vmin) + $vmin]
2385	} else {
2386	set value 0.0
2387	}
2388	set tipx [expr $x + 15]
2389	set tipy [expr $y - 5]
2390	Rappture::Tooltip::text $c "$title $value"
2391	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2392	}
2393
2394
2395	# ----------------------------------------------------------------------
2396	# USAGE: Slice move x\|y\|z <newval>
2397	#
2398	# Called automatically when the user drags the slider to move the
2399	# cut plane that slices 3D data. Gets the current value from the
2400	# slider and moves the cut plane to the appropriate point in the
2401	# data set.
2402	# ----------------------------------------------------------------------
2403	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2404	switch -- $option {
2405	"move" {
2406	set axis [lindex $args 0]
2407	set oldval $_settings(axis-${axis}position)
2408	set newval [lindex $args 1]
2409	if {[llength $args] != 2} {
2410	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2411	}
2412	set newpos [expr {0.01*$newval}]
2413	SendCmd "cutplane slice $axis $newpos"
2414	}
2415	"tooltip" {
2416	set axis [lindex $args 0]
2417	set val [$itk_component(${axis}CutScale) get]
2418	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2419	}
2420	default {
2421	error "bad option \"$option\": should be axis, move, or tooltip"
2422	}
2423	}
2424	}
2425
2426
2427	# ----------------------------------------------------------------------
2428	# USAGE: _dropdown post
2429	# USAGE: _dropdown unpost
2430	# USAGE: _dropdown select
2431	#
2432	# Used internally to handle the dropdown list for this combobox. The
2433	# post/unpost options are invoked when the list is posted or unposted
2434	# to manage the relief of the controlling button. The select option
2435	# is invoked whenever there is a selection from the list, to assign
2436	# the value back to the gauge.
2437	# ----------------------------------------------------------------------
2438	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2439	set c $itk_component(view)
2440	switch -- $option {
2441	post {
2442	foreach { x1 y1 x2 y2 } [$c bbox title] break
2443	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2444	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2445	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2446	tk_popup $itk_component(fieldmenu) $x $y
2447	}
2448	activate {
2449	$c itemconfigure title -fill red
2450	}
2451	deactivate {
2452	$c itemconfigure title -fill white
2453	}
2454	invoke {
2455	$itk_component(field) value $_curFldLabel
2456	AdjustSetting field
2457	}
2458	default {
2459	error "bad option \"$option\": should be post, unpost, select"
2460	}
2461	}
2462	}
2463
2464	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2465	array set positions {
2466	front "1 0 0 0"
2467	back "0 0 1 0"
2468	left "0.707107 0 -0.707107 0"
2469	right "0.707107 0 0.707107 0"
2470	top "0.707107 -0.707107 0 0"
2471	bottom "0.707107 0.707107 0 0"
2472	}
2473	foreach name { qw qx qy qz } value $positions($side) {
2474	set _view($name) $value
2475	}
2476	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2477	$_arcball quaternion $q
2478	SendCmd "camera orient $q"
2479	SendCmd "camera reset"
2480	set _view(xpan) 0
2481	set _view(ypan) 0
2482	set _view(zoom) 1.0
2483	}
2484

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