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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 3454

Last change on this file since 3454 was 3454, checked in by gah, 11 years ago
add KP_Enter to Return bindings. Implement OK handler in visviewer base class. Fix setting # of isolines while running a sequence of heightmaps/contours
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 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
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	set w [winfo width $itk_component(view)]
804	set h [winfo height $itk_component(view)]
805	EventuallyResize $w $h
806	}
807	return $result
808	}
809
810	#
811	# isconnected --
812	#
813	# Indicates if we are currently connected to the visualization server.
814	#
815	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
816	return [VisViewer::IsConnected]
817	}
818
819	#
820	# disconnect --
821	#
822	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
823	Disconnect
824	set _reset 1
825	}
826
827	#
828	# Disconnect --
829	#
830	# Clients use this method to disconnect from the current rendering
831	# server.
832	#
833	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
834	VisViewer::Disconnect
835
836	$_dispatcher cancel !rebuild
837	$_dispatcher cancel !resize
838	$_dispatcher cancel !reseed
839	$_dispatcher cancel !rotate
840	$_dispatcher cancel !xcutplane
841	$_dispatcher cancel !ycutplane
842	$_dispatcher cancel !zcutplane
843	$_dispatcher cancel !legend
844	# disconnected -- no more data sitting on server
845	array unset _datasets
846	array unset _data
847	array unset _colormaps
848	array unset _seeds
849	array unset _dataset2style
850	array unset _obj2datasets
851	}
852
853	# ----------------------------------------------------------------------
854	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
855	#
856	# Invoked automatically whenever the "image" command comes in from
857	# the rendering server. Indicates that binary image data with the
858	# specified <size> will follow.
859	# ----------------------------------------------------------------------
860	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
861	array set info {
862	-token "???"
863	-bytes 0
864	-type image
865	}
866	array set info $args
867	set bytes [ReceiveBytes $info(-bytes)]
868	if { $info(-type) == "image" } {
869	if 0 {
870	set f [open "last.ppm" "w"]
871	puts $f $bytes
872	close $f
873	}
874	$_image(plot) configure -data $bytes
875	set time [clock seconds]
876	set date [clock format $time]
877	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
878	if { $_start > 0 } {
879	set finish [clock clicks -milliseconds]
880	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
881	set _start 0
882	}
883	} elseif { $info(type) == "print" } {
884	set tag $this-print-$info(-token)
885	set _hardcopy($tag) $bytes
886	}
887	if { $_legendPending } {
888	RequestLegend
889	}
890	}
891
892	#
893	# ReceiveDataset --
894	#
895	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
896	if { ![isconnected] } {
897	return
898	}
899	set option [lindex $args 0]
900	switch -- $option {
901	"scalar" {
902	set option [lindex $args 1]
903	switch -- $option {
904	"world" {
905	foreach { x y z value tag } [lrange $args 2 end] break
906	}
907	"pixel" {
908	foreach { x y value tag } [lrange $args 2 end] break
909	}
910	}
911	}
912	"vector" {
913	set option [lindex $args 1]
914	switch -- $option {
915	"world" {
916	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
917	}
918	"pixel" {
919	foreach { x y vx vy vz tag } [lrange $args 2 end] break
920	}
921	}
922	}
923	"names" {
924	foreach { name } [lindex $args 1] {
925	#puts stderr "Dataset: $name"
926	}
927	}
928	default {
929	error "unknown dataset option \"$option\" from server"
930	}
931	}
932	}
933
934	# ----------------------------------------------------------------------
935	# USAGE: Rebuild
936	#
937	# Called automatically whenever something changes that affects the
938	# data in the widget. Clears any existing data and rebuilds the
939	# widget to display new data.
940	# ----------------------------------------------------------------------
941	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
942	update
943	set w [winfo width $itk_component(view)]
944	set h [winfo height $itk_component(view)]
945	if { $w < 2 \|\| $h < 2 } {
946	$_dispatcher event -idle !rebuild
947	return
948	}
949
950	# Turn on buffering of commands to the server. We don't want to
951	# be preempted by a server disconnect/reconnect (which automatically
952	# generates a new call to Rebuild).
953	StartBufferingCommands
954	set _legendPending 1
955
956	set _first ""
957	if { $_reset } {
958	if { $_reportClientInfo } {
959	# Tell the server the name of the tool, the version, and dataset
960	# that we are rendering. Have to do it here because we don't know
961	# what data objects are using the renderer until be get here.
962	global env
963
964	set info {}
965	set user "???"
966	if { [info exists env(USER)] } {
967	set user $env(USER)
968	}
969	set session "???"
970	if { [info exists env(SESSION)] } {
971	set session $env(SESSION)
972	}
973	lappend info "hub" [exec hostname]
974	lappend info "client" "vtkstreamlinesviewer"
975	lappend info "user" $user
976	lappend info "session" $session
977	SendCmd "clientinfo [list $info]"
978	}
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	# FIXME: Don't know exactly why this "imgflush" is needed.
1087	# But this makes the "camera reset" below to work correctly.
1088	# I left this in because the axis labels are scaled too big.
1089	SendCmd "imgflush"
1090
1091	# Reset the camera and other view parameters
1092	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1093	$_arcball quaternion $q
1094	if {$_view(ortho)} {
1095	SendCmd "camera mode ortho"
1096	} else {
1097	SendCmd "camera mode persp"
1098	}
1099	DoRotate
1100	PanCamera
1101	Zoom reset
1102	SendCmd "camera reset"
1103	set _reset 0
1104	}
1105	# Actually write the commands to the server socket. If it fails, we don't
1106	# care. We're finished here.
1107	blt::busy hold $itk_component(hull)
1108	StopBufferingCommands
1109	blt::busy release $itk_component(hull)
1110	}
1111
1112	# ----------------------------------------------------------------------
1113	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1114	#
1115	# Returns a list of server IDs for the current datasets being displayed. This
1116	# is normally a single ID, but it might be a list of IDs if the current data
1117	# object has multiple components.
1118	# ----------------------------------------------------------------------
1119	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1120	set flag [lindex $args 0]
1121	switch -- $flag {
1122	"-all" {
1123	if { [llength $args] > 1 } {
1124	error "CurrentDatasets: can't specify dataobj after \"-all\""
1125	}
1126	set dlist [get -objects]
1127	}
1128	"-visible" {
1129	if { [llength $args] > 1 } {
1130	set dlist {}
1131	set args [lrange $args 1 end]
1132	foreach dataobj $args {
1133	if { [info exists _obj2ovride($dataobj-raise)] } {
1134	lappend dlist $dataobj
1135	}
1136	}
1137	} else {
1138	set dlist [get -visible]
1139	}
1140	}
1141	default {
1142	set dlist $args
1143	}
1144	}
1145	set rlist ""
1146	foreach dataobj $dlist {
1147	foreach comp [$dataobj components] {
1148	set tag $dataobj-$comp
1149	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1150	lappend rlist $tag
1151	}
1152	}
1153	}
1154	return $rlist
1155	}
1156
1157	# ----------------------------------------------------------------------
1158	# USAGE: Zoom in
1159	# USAGE: Zoom out
1160	# USAGE: Zoom reset
1161	#
1162	# Called automatically when the user clicks on one of the zoom
1163	# controls for this widget. Changes the zoom for the current view.
1164	# ----------------------------------------------------------------------
1165	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1166	switch -- $option {
1167	"in" {
1168	set _view(zoom) [expr {$_view(zoom)*1.25}]
1169	SendCmd "camera zoom $_view(zoom)"
1170	}
1171	"out" {
1172	set _view(zoom) [expr {$_view(zoom)*0.8}]
1173	SendCmd "camera zoom $_view(zoom)"
1174	}
1175	"reset" {
1176	array set _view {
1177	qw 0.853553
1178	qx -0.353553
1179	qy 0.353553
1180	qz 0.146447
1181	zoom 1.0
1182	xpan 0
1183	ypan 0
1184	}
1185	SendCmd "camera reset all"
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	}
1196	}
1197	}
1198
1199	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1200	set x $_view(xpan)
1201	set y $_view(ypan)
1202	SendCmd "camera pan $x $y"
1203	}
1204
1205
1206	# ----------------------------------------------------------------------
1207	# USAGE: Rotate click <x> <y>
1208	# USAGE: Rotate drag <x> <y>
1209	# USAGE: Rotate release <x> <y>
1210	#
1211	# Called automatically when the user clicks/drags/releases in the
1212	# plot area. Moves the plot according to the user's actions.
1213	# ----------------------------------------------------------------------
1214	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1215	switch -- $option {
1216	"click" {
1217	$itk_component(view) configure -cursor fleur
1218	set _click(x) $x
1219	set _click(y) $y
1220	}
1221	"drag" {
1222	if {[array size _click] == 0} {
1223	Rotate click $x $y
1224	} else {
1225	set w [winfo width $itk_component(view)]
1226	set h [winfo height $itk_component(view)]
1227	if {$w <= 0 \|\| $h <= 0} {
1228	return
1229	}
1230
1231	if {[catch {
1232	# this fails sometimes for no apparent reason
1233	set dx [expr {double($x-$_click(x))/$w}]
1234	set dy [expr {double($y-$_click(y))/$h}]
1235	}]} {
1236	return
1237	}
1238	if { $dx == 0 && $dy == 0 } {
1239	return
1240	}
1241	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1242	EventuallyRotate $q
1243	set _click(x) $x
1244	set _click(y) $y
1245	}
1246	}
1247	"release" {
1248	Rotate drag $x $y
1249	$itk_component(view) configure -cursor ""
1250	catch {unset _click}
1251	}
1252	default {
1253	error "bad option \"$option\": should be click, drag, release"
1254	}
1255	}
1256	}
1257
1258	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1259	foreach tag [CurrentDatasets -visible] {
1260	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1261	}
1262	}
1263
1264	# ----------------------------------------------------------------------
1265	# USAGE: $this Pan click x y
1266	# $this Pan drag x y
1267	# $this Pan release x y
1268	#
1269	# Called automatically when the user clicks on one of the zoom
1270	# controls for this widget. Changes the zoom for the current view.
1271	# ----------------------------------------------------------------------
1272	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1273	switch -- $option {
1274	"set" {
1275	set w [winfo width $itk_component(view)]
1276	set h [winfo height $itk_component(view)]
1277	set x [expr $x / double($w)]
1278	set y [expr $y / double($h)]
1279	set _view(xpan) [expr $_view(xpan) + $x]
1280	set _view(ypan) [expr $_view(ypan) + $y]
1281	PanCamera
1282	return
1283	}
1284	"click" {
1285	set _click(x) $x
1286	set _click(y) $y
1287	$itk_component(view) configure -cursor hand1
1288	}
1289	"drag" {
1290	if { ![info exists _click(x)] } {
1291	set _click(x) $x
1292	}
1293	if { ![info exists _click(y)] } {
1294	set _click(y) $y
1295	}
1296	set w [winfo width $itk_component(view)]
1297	set h [winfo height $itk_component(view)]
1298	set dx [expr ($_click(x) - $x)/double($w)]
1299	set dy [expr ($_click(y) - $y)/double($h)]
1300	set _click(x) $x
1301	set _click(y) $y
1302	set _view(xpan) [expr $_view(xpan) - $dx]
1303	set _view(ypan) [expr $_view(ypan) - $dy]
1304	PanCamera
1305	}
1306	"release" {
1307	Pan drag $x $y
1308	$itk_component(view) configure -cursor ""
1309	}
1310	default {
1311	error "unknown option \"$option\": should set, click, drag, or release"
1312	}
1313	}
1314	}
1315
1316	# ----------------------------------------------------------------------
1317	# USAGE: InitSettings <what> ?<value>?
1318	#
1319	# Used internally to update rendering settings whenever parameters
1320	# change in the popup settings panel. Sends the new settings off
1321	# to the back end.
1322	# ----------------------------------------------------------------------
1323	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1324	foreach spec $args {
1325	if { [info exists _settings($_first-$spec)] } {
1326	# Reset global setting with dataobj specific setting
1327	set _settings($spec) $_settings($_first-$spec)
1328	}
1329	AdjustSetting $spec
1330	}
1331	}
1332
1333	#
1334	# AdjustSetting --
1335	#
1336	# Changes/updates a specific setting in the widget. There are
1337	# usually user-setable option. Commands are sent to the render
1338	# server.
1339	#
1340	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1341	if { ![isconnected] } {
1342	return
1343	}
1344	switch -- $what {
1345	"volumeOpacity" {
1346	set val $_settings(volumeOpacity)
1347	set sval [expr { 0.01 * double($val) }]
1348	SendCmd "polydata opacity $sval"
1349	}
1350	"volumeWireframe" {
1351	set bool $_settings(volumeWireframe)
1352	SendCmd "polydata wireframe $bool"
1353	}
1354	"volumeVisible" {
1355	set bool $_settings(volumeVisible)
1356	SendCmd "polydata visible $bool"
1357	if { $bool } {
1358	Rappture::Tooltip::for $itk_component(volume) \
1359	"Hide the volume"
1360	} else {
1361	Rappture::Tooltip::for $itk_component(volume) \
1362	"Show the volume"
1363	}
1364	}
1365	"volumeLighting" {
1366	set bool $_settings(volumeLighting)
1367	SendCmd "polydata lighting $bool"
1368	}
1369	"volumeEdges" {
1370	set bool $_settings(volumeEdges)
1371	SendCmd "polydata edges $bool"
1372	}
1373	"axesVisible" {
1374	set bool $_settings(axesVisible)
1375	SendCmd "axis visible all $bool"
1376	}
1377	"axisLabelsVisible" {
1378	set bool $_settings(axisLabelsVisible)
1379	SendCmd "axis labels all $bool"
1380	}
1381	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1382	set axis [string tolower [string range $what 4 4]]
1383	set bool $_settings($what)
1384	SendCmd "axis grid $axis $bool"
1385	}
1386	"axis-mode" {
1387	set mode [$itk_component(axismode) value]
1388	set mode [$itk_component(axismode) translate $mode]
1389	set _settings($what) $mode
1390	SendCmd "axis flymode $mode"
1391	}
1392	"cutplaneEdges" {
1393	set bool $_settings($what)
1394	SendCmd "cutplane edges $bool"
1395	}
1396	"cutplaneVisible" {
1397	set bool $_settings($what)
1398	SendCmd "cutplane visible $bool"
1399	}
1400	"cutplaneWireframe" {
1401	set bool $_settings($what)
1402	SendCmd "cutplane wireframe $bool"
1403	}
1404	"cutplaneLighting" {
1405	set bool $_settings($what)
1406	SendCmd "cutplane lighting $bool"
1407	}
1408	"cutplaneOpacity" {
1409	set val $_settings($what)
1410	set sval [expr { 0.01 * double($val) }]
1411	SendCmd "cutplane opacity $sval"
1412	}
1413	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1414	set axis [string tolower [string range $what 8 8]]
1415	set bool $_settings($what)
1416	if { $bool } {
1417	$itk_component(${axis}CutScale) configure -state normal \
1418	-troughcolor white
1419	} else {
1420	$itk_component(${axis}CutScale) configure -state disabled \
1421	-troughcolor grey82
1422	}
1423	SendCmd "cutplane axis $axis $bool"
1424	}
1425	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1426	set axis [string tolower [string range $what 8 8]]
1427	set pos [expr $_settings($what) * 0.01]
1428	SendCmd "cutplane slice ${axis} ${pos}"
1429	set _cutplanePending 0
1430	}
1431	"streamlinesSeedsVisible" {
1432	set bool $_settings($what)
1433	SendCmd "streamlines seed visible $bool"
1434	}
1435	"streamlinesNumSeeds" {
1436	set density $_settings($what)
1437	EventuallyReseed $density
1438	}
1439	"streamlinesVisible" {
1440	set bool $_settings($what)
1441	SendCmd "streamlines visible $bool"
1442	if { $bool } {
1443	Rappture::Tooltip::for $itk_component(streamlines) \
1444	"Hide the streamlines"
1445	} else {
1446	Rappture::Tooltip::for $itk_component(streamlines) \
1447	"Show the streamlines"
1448	}
1449	}
1450	"streamlinesMode" {
1451	set mode [$itk_component(streammode) value]
1452	set _settings(streamlinesMode) $mode
1453	switch -- $mode {
1454	"lines" {
1455	SendCmd "streamlines lines"
1456	}
1457	"ribbons" {
1458	SendCmd "streamlines ribbons 3 0"
1459	}
1460	"tubes" {
1461	SendCmd "streamlines tubes 5 3"
1462	}
1463	}
1464	}
1465	"streamlinesColormap" {
1466	set colormap [$itk_component(colormap) value]
1467	set _settings(streamlinesColormap) $colormap
1468	foreach dataset [CurrentDatasets -visible $_first] {
1469	foreach {dataobj comp} [split $dataset -] break
1470	ChangeColormap $dataobj $comp $colormap
1471	}
1472	set _legendPending 1
1473	}
1474	"streamlinesOpacity" {
1475	set val $_settings(streamlinesOpacity)
1476	set sval [expr { 0.01 * double($val) }]
1477	SendCmd "streamlines opacity $sval"
1478	}
1479	"streamlinesScale" {
1480	set val $_settings(streamlinesScale)
1481	set sval [expr { 0.01 * double($val) }]
1482	SendCmd "streamlines scale $sval $sval $sval"
1483	}
1484	"streamlinesLighting" {
1485	set bool $_settings(streamlinesLighting)
1486	SendCmd "streamlines lighting $bool"
1487	}
1488	"field" {
1489	set label [$itk_component(field) value]
1490	set fname [$itk_component(field) translate $label]
1491	set _settings(field) $fname
1492	if { [info exists _fields($fname)] } {
1493	foreach { label units components } $_fields($fname) break
1494	if { $components > 1 } {
1495	set _colorMode vmag
1496	} else {
1497	set _colorMode scalar
1498	}
1499	set _curFldName $fname
1500	set _curFldLabel $label
1501	} else {
1502	puts stderr "unknown field \"$fname\""
1503	return
1504	}
1505	# Get the new limits because the field changed.
1506	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1507	SendCmd "streamlines colormode $_colorMode $_curFldName"
1508	SendCmd "cutplane colormode $_colorMode $_curFldName"
1509	DrawLegend
1510	}
1511	default {
1512	error "don't know how to fix $what"
1513	}
1514	}
1515	}
1516
1517	#
1518	# RequestLegend --
1519	#
1520	# Request a new legend from the server. The size of the legend
1521	# is determined from the height of the canvas. It will be rotated
1522	# to be vertical when drawn.
1523	#
1524	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1525	set font "Arial 8"
1526	set lineht [font metrics $font -linespace]
1527	set c $itk_component(legend)
1528	set w 12
1529	set h [expr {$_height - 3 * ($lineht + 2)}]
1530	if { $h < 1} {
1531	return
1532	}
1533	# Set the legend on the first streamlines dataset.
1534	foreach dataset [CurrentDatasets -visible $_first] {
1535	foreach {dataobj comp} [split $dataset -] break
1536	if { [info exists _dataset2style($dataset)] } {
1537	SendCmdNoWait \
1538	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1539	break;
1540	}
1541	}
1542	}
1543
1544	#
1545	# ChangeColormap --
1546	#
1547	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1548	set tag $dataobj-$comp
1549	if { ![info exist _style($tag)] } {
1550	error "no initial colormap"
1551	}
1552	array set style $_style($tag)
1553	set style(-color) $color
1554	set _style($tag) [array get style]
1555	SetColormap $dataobj $comp
1556	}
1557
1558	#
1559	# SetColormap --
1560	#
1561	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1562	array set style {
1563	-color BCGYR
1564	-levels 6
1565	-opacity 1.0
1566	}
1567	set tag $dataobj-$comp
1568	if { ![info exists _initialStyle($tag)] } {
1569	# Save the initial component style.
1570	set _initialStyle($tag) [$dataobj style $comp]
1571	}
1572
1573	# Override defaults with initial style defined in xml.
1574	array set style $_initialStyle($tag)
1575
1576	if { ![info exists _style($tag)] } {
1577	set _style($tag) [array get style]
1578	}
1579	# Override initial style with current style.
1580	array set style $_style($tag)
1581
1582	set name "$style(-color):$style(-levels):$style(-opacity)"
1583	if { ![info exists _colormaps($name)] } {
1584	BuildColormap $name [array get style]
1585	set _colormaps($name) 1
1586	}
1587	if { ![info exists _dataset2style($tag)] \|\|
1588	$_dataset2style($tag) != $name } {
1589	SendCmd "streamlines colormap $name $tag"
1590	SendCmd "cutplane colormap $name $tag"
1591	set _dataset2style($tag) $name
1592	}
1593	}
1594
1595
1596	#
1597	# BuildColormap --
1598	#
1599	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1600	array set style $styles
1601	set cmap [ColorsToColormap $style(-color)]
1602	if { [llength $cmap] == 0 } {
1603	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1604	}
1605	if { ![info exists _settings(volumeOpacity)] } {
1606	set _settings(volumeOpacity) $style(-opacity)
1607	}
1608	set max $_settings(volumeOpacity)
1609
1610	set wmap "0.0 1.0 1.0 1.0"
1611	SendCmd "colormap add $name { $cmap } { $wmap }"
1612	}
1613
1614	# ----------------------------------------------------------------------
1615	# CONFIGURATION OPTION: -plotbackground
1616	# ----------------------------------------------------------------------
1617	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1618	if { [isconnected] } {
1619	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1620	SendCmd "screen bgcolor $r $g $b"
1621	}
1622	}
1623
1624	# ----------------------------------------------------------------------
1625	# CONFIGURATION OPTION: -plotforeground
1626	# ----------------------------------------------------------------------
1627	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1628	if { [isconnected] } {
1629	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1630	#fix this!
1631	#SendCmd "color background $r $g $b"
1632	}
1633	}
1634
1635	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1636
1637	set fg [option get $itk_component(hull) font Font]
1638	#set bfg [option get $itk_component(hull) boldFont Font]
1639
1640	set inner [$itk_component(main) insert end \
1641	-title "Volume Settings" \
1642	-icon [Rappture::icon volume-on]]
1643	$inner configure -borderwidth 4
1644
1645	checkbutton $inner.volume \
1646	-text "Show Volume" \
1647	-variable [itcl::scope _settings(volumeVisible)] \
1648	-command [itcl::code $this AdjustSetting volumeVisible] \
1649	-font "Arial 9"
1650
1651	checkbutton $inner.wireframe \
1652	-text "Show Wireframe" \
1653	-variable [itcl::scope _settings(volumeWireframe)] \
1654	-command [itcl::code $this AdjustSetting volumeWireframe] \
1655	-font "Arial 9"
1656
1657	checkbutton $inner.lighting \
1658	-text "Enable Lighting" \
1659	-variable [itcl::scope _settings(volumeLighting)] \
1660	-command [itcl::code $this AdjustSetting volumeLighting] \
1661	-font "Arial 9"
1662
1663	checkbutton $inner.edges \
1664	-text "Show Edges" \
1665	-variable [itcl::scope _settings(volumeEdges)] \
1666	-command [itcl::code $this AdjustSetting volumeEdges] \
1667	-font "Arial 9"
1668
1669	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1670	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1671	-variable [itcl::scope _settings(volumeOpacity)] \
1672	-width 10 \
1673	-showvalue off \
1674	-command [itcl::code $this AdjustSetting volumeOpacity]
1675
1676	blt::table $inner \
1677	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1678	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1679	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1680	3,0 $inner.opacity_l -anchor w -pady 2 \
1681	3,1 $inner.opacity -fill x -pady 2
1682
1683	blt::table configure $inner r* c* -resize none
1684	blt::table configure $inner r4 c1 -resize expand
1685	}
1686
1687
1688	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1689
1690	set fg [option get $itk_component(hull) font Font]
1691	#set bfg [option get $itk_component(hull) boldFont Font]
1692
1693	set inner [$itk_component(main) insert end \
1694	-title "Streams Settings" \
1695	-icon [Rappture::icon streamlines-on]]
1696	$inner configure -borderwidth 4
1697
1698	checkbutton $inner.streamlines \
1699	-text "Show Streamlines" \
1700	-variable [itcl::scope _settings(streamlinesVisible)] \
1701	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1702	-font "Arial 9"
1703
1704	checkbutton $inner.lighting \
1705	-text "Enable Lighting" \
1706	-variable [itcl::scope _settings(streamlinesLighting)] \
1707	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1708	-font "Arial 9"
1709
1710	checkbutton $inner.seeds \
1711	-text "Show Seeds" \
1712	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1713	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1714	-font "Arial 9"
1715
1716	label $inner.mode_l -text "Mode" -font "Arial 9"
1717	itk_component add streammode {
1718	Rappture::Combobox $inner.mode -width 10 -editable no
1719	}
1720	$inner.mode choices insert end \
1721	"lines" "lines" \
1722	"ribbons" "ribbons" \
1723	"tubes" "tubes"
1724	$itk_component(streammode) value $_settings(streamlinesMode)
1725	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1726
1727	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1728	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1729	-variable [itcl::scope _settings(streamlinesOpacity)] \
1730	-width 10 \
1731	-showvalue off \
1732	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1733
1734	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1735	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1736	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1737	-width 10 \
1738	-showvalue on \
1739	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1740
1741	label $inner.scale_l -text "Scale" -font "Arial 9"
1742	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1743	-variable [itcl::scope _settings(streamlinesScale)] \
1744	-width 10 \
1745	-showvalue off \
1746	-command [itcl::code $this AdjustSetting streamlinesScale]
1747
1748	label $inner.field_l -text "Field" -font "Arial 9"
1749	itk_component add field {
1750	Rappture::Combobox $inner.field -width 10 -editable no
1751	}
1752	bind $inner.field <<Value>> \
1753	[itcl::code $this AdjustSetting field]
1754
1755	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1756	itk_component add colormap {
1757	Rappture::Combobox $inner.colormap -width 10 -editable no
1758	}
1759	$inner.colormap choices insert end \
1760	"BCGYR" "BCGYR" \
1761	"BGYOR" "BGYOR" \
1762	"blue" "blue" \
1763	"blue-to-brown" "blue-to-brown" \
1764	"blue-to-orange" "blue-to-orange" \
1765	"blue-to-grey" "blue-to-grey" \
1766	"green-to-magenta" "green-to-magenta" \
1767	"greyscale" "greyscale" \
1768	"nanohub" "nanohub" \
1769	"rainbow" "rainbow" \
1770	"spectral" "spectral" \
1771	"ROYGB" "ROYGB" \
1772	"RYGCB" "RYGCB" \
1773	"brown-to-blue" "brown-to-blue" \
1774	"grey-to-blue" "grey-to-blue" \
1775	"orange-to-blue" "orange-to-blue"
1776
1777	$itk_component(colormap) value "BCGYR"
1778	bind $inner.colormap <<Value>> \
1779	[itcl::code $this AdjustSetting streamlinesColormap]
1780
1781	blt::table $inner \
1782	0,0 $inner.field_l -anchor w -pady 2 \
1783	0,1 $inner.field -fill x -pady 2 \
1784	1,0 $inner.colormap_l -anchor w -pady 2 \
1785	1,1 $inner.colormap -fill x -pady 2 \
1786	2,0 $inner.mode_l -anchor w -pady 2 \
1787	2,1 $inner.mode -fill x -pady 2 \
1788	3,0 $inner.opacity_l -anchor w -pady 2 \
1789	3,1 $inner.opacity -fill x -pady 2 \
1790	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1791	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1792	7,0 $inner.density_l -anchor w -pady 2 \
1793	7,1 $inner.density -fill x -pady 2 \
1794
1795	blt::table configure $inner r* c* -resize none
1796	blt::table configure $inner r10 c1 c2 -resize expand
1797	}
1798
1799	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1800
1801	set fg [option get $itk_component(hull) font Font]
1802	#set bfg [option get $itk_component(hull) boldFont Font]
1803
1804	set inner [$itk_component(main) insert end \
1805	-title "Axis Settings" \
1806	-icon [Rappture::icon axis1]]
1807	$inner configure -borderwidth 4
1808
1809	checkbutton $inner.visible \
1810	-text "Show Axes" \
1811	-variable [itcl::scope _settings(axesVisible)] \
1812	-command [itcl::code $this AdjustSetting axesVisible] \
1813	-font "Arial 9"
1814
1815	checkbutton $inner.labels \
1816	-text "Show Axis Labels" \
1817	-variable [itcl::scope _settings(axisLabelsVisible)] \
1818	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1819	-font "Arial 9"
1820
1821	checkbutton $inner.xgrid \
1822	-text "Show X Grid" \
1823	-variable [itcl::scope _settings(axisXGrid)] \
1824	-command [itcl::code $this AdjustSetting axisXGrid] \
1825	-font "Arial 9"
1826	checkbutton $inner.ygrid \
1827	-text "Show Y Grid" \
1828	-variable [itcl::scope _settings(axisYGrid)] \
1829	-command [itcl::code $this AdjustSetting axisYGrid] \
1830	-font "Arial 9"
1831	checkbutton $inner.zgrid \
1832	-text "Show Z Grid" \
1833	-variable [itcl::scope _settings(axisZGrid)] \
1834	-command [itcl::code $this AdjustSetting axisZGrid] \
1835	-font "Arial 9"
1836
1837	label $inner.mode_l -text "Mode" -font "Arial 9"
1838
1839	itk_component add axismode {
1840	Rappture::Combobox $inner.mode -width 10 -editable no
1841	}
1842	$inner.mode choices insert end \
1843	"static_triad" "static" \
1844	"closest_triad" "closest" \
1845	"furthest_triad" "furthest" \
1846	"outer_edges" "outer"
1847	$itk_component(axismode) value "static"
1848	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1849
1850	blt::table $inner \
1851	0,0 $inner.visible -anchor w -cspan 2 \
1852	1,0 $inner.labels -anchor w -cspan 2 \
1853	2,0 $inner.xgrid -anchor w -cspan 2 \
1854	3,0 $inner.ygrid -anchor w -cspan 2 \
1855	4,0 $inner.zgrid -anchor w -cspan 2 \
1856	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1857	6,0 $inner.mode -fill x -cspan 2
1858
1859	blt::table configure $inner r* c* -resize none
1860	blt::table configure $inner r7 c1 -resize expand
1861	}
1862
1863
1864	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1865	set inner [$itk_component(main) insert end \
1866	-title "Camera Settings" \
1867	-icon [Rappture::icon camera]]
1868	$inner configure -borderwidth 4
1869
1870	set labels { qx qy qz qw xpan ypan zoom }
1871	set row 0
1872	foreach tag $labels {
1873	label $inner.${tag}label -text $tag -font "Arial 9"
1874	entry $inner.${tag} -font "Arial 9" -bg white \
1875	-textvariable [itcl::scope _view($tag)]
1876	bind $inner.${tag} <KeyPress-Return> \
1877	[itcl::code $this camera set ${tag}]
1878	blt::table $inner \
1879	$row,0 $inner.${tag}label -anchor e -pady 2 \
1880	$row,1 $inner.${tag} -anchor w -pady 2
1881	blt::table configure $inner r$row -resize none
1882	incr row
1883	}
1884	checkbutton $inner.ortho \
1885	-text "Orthographic Projection" \
1886	-variable [itcl::scope _view(ortho)] \
1887	-command [itcl::code $this camera set ortho] \
1888	-font "Arial 9"
1889	blt::table $inner \
1890	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1891	blt::table configure $inner r$row -resize none
1892	incr row
1893
1894	blt::table configure $inner c0 c1 -resize none
1895	blt::table configure $inner c2 -resize expand
1896	blt::table configure $inner r$row -resize expand
1897	}
1898
1899	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1900
1901	set fg [option get $itk_component(hull) font Font]
1902
1903	set inner [$itk_component(main) insert end \
1904	-title "Cutplane Settings" \
1905	-icon [Rappture::icon cutbutton]]
1906
1907	$inner configure -borderwidth 4
1908
1909	checkbutton $inner.visible \
1910	-text "Show Cutplanes" \
1911	-variable [itcl::scope _settings(cutplaneVisible)] \
1912	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1913	-font "Arial 9"
1914
1915	checkbutton $inner.wireframe \
1916	-text "Show Wireframe" \
1917	-variable [itcl::scope _settings(cutplaneWireframe)] \
1918	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1919	-font "Arial 9"
1920
1921	checkbutton $inner.lighting \
1922	-text "Enable Lighting" \
1923	-variable [itcl::scope _settings(cutplaneLighting)] \
1924	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1925	-font "Arial 9"
1926
1927	checkbutton $inner.edges \
1928	-text "Show Edges" \
1929	-variable [itcl::scope _settings(cutplaneEdges)] \
1930	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1931	-font "Arial 9"
1932
1933	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1934	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1935	-variable [itcl::scope _settings(cutplaneOpacity)] \
1936	-width 10 \
1937	-showvalue off \
1938	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1939	$inner.opacity set $_settings(cutplaneOpacity)
1940
1941	# X-value slicer...
1942	itk_component add xCutButton {
1943	Rappture::PushButton $inner.xbutton \
1944	-onimage [Rappture::icon x-cutplane-red] \
1945	-offimage [Rappture::icon x-cutplane-red] \
1946	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1947	-variable [itcl::scope _settings(cutplaneXVisible)]
1948	}
1949	Rappture::Tooltip::for $itk_component(xCutButton) \
1950	"Toggle the X-axis cutplane on/off"
1951	$itk_component(xCutButton) select
1952
1953	itk_component add xCutScale {
1954	::scale $inner.xval -from 100 -to 0 \
1955	-width 10 -orient vertical -showvalue yes \
1956	-borderwidth 1 -highlightthickness 0 \
1957	-command [itcl::code $this EventuallySetCutplane x] \
1958	-variable [itcl::scope _settings(cutplaneXPosition)] \
1959	-foreground red3 -font "Arial 9 bold"
1960	} {
1961	usual
1962	ignore -borderwidth -highlightthickness -foreground -font
1963	}
1964	# Set the default cutplane value before disabling the scale.
1965	$itk_component(xCutScale) set 50
1966	$itk_component(xCutScale) configure -state disabled
1967	Rappture::Tooltip::for $itk_component(xCutScale) \
1968	"@[itcl::code $this Slice tooltip x]"
1969
1970	# Y-value slicer...
1971	itk_component add yCutButton {
1972	Rappture::PushButton $inner.ybutton \
1973	-onimage [Rappture::icon y-cutplane-green] \
1974	-offimage [Rappture::icon y-cutplane-green] \
1975	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1976	-variable [itcl::scope _settings(cutplaneYVisible)]
1977	}
1978	Rappture::Tooltip::for $itk_component(yCutButton) \
1979	"Toggle the Y-axis cutplane on/off"
1980	$itk_component(yCutButton) select
1981
1982	itk_component add yCutScale {
1983	::scale $inner.yval -from 100 -to 0 \
1984	-width 10 -orient vertical -showvalue yes \
1985	-borderwidth 1 -highlightthickness 0 \
1986	-command [itcl::code $this EventuallySetCutplane y] \
1987	-variable [itcl::scope _settings(cutplaneYPosition)] \
1988	-foreground green3 -font "Arial 9 bold"
1989	} {
1990	usual
1991	ignore -borderwidth -highlightthickness -foreground -font
1992	}
1993	Rappture::Tooltip::for $itk_component(yCutScale) \
1994	"@[itcl::code $this Slice tooltip y]"
1995	# Set the default cutplane value before disabling the scale.
1996	$itk_component(yCutScale) set 50
1997	$itk_component(yCutScale) configure -state disabled
1998
1999	# Z-value slicer...
2000	itk_component add zCutButton {
2001	Rappture::PushButton $inner.zbutton \
2002	-onimage [Rappture::icon z-cutplane-blue] \
2003	-offimage [Rappture::icon z-cutplane-blue] \
2004	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
2005	-variable [itcl::scope _settings(cutplaneZVisible)]
2006	}
2007	Rappture::Tooltip::for $itk_component(zCutButton) \
2008	"Toggle the Z-axis cutplane on/off"
2009	$itk_component(zCutButton) select
2010
2011	itk_component add zCutScale {
2012	::scale $inner.zval -from 100 -to 0 \
2013	-width 10 -orient vertical -showvalue yes \
2014	-borderwidth 1 -highlightthickness 0 \
2015	-command [itcl::code $this EventuallySetCutplane z] \
2016	-variable [itcl::scope _settings(cutplaneZPosition)] \
2017	-foreground blue3 -font "Arial 9 bold"
2018	} {
2019	usual
2020	ignore -borderwidth -highlightthickness -foreground -font
2021	}
2022	$itk_component(zCutScale) set 50
2023	$itk_component(zCutScale) configure -state disabled
2024	#$itk_component(zCutScale) configure -state disabled
2025	Rappture::Tooltip::for $itk_component(zCutScale) \
2026	"@[itcl::code $this Slice tooltip z]"
2027
2028	blt::table $inner \
2029	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2030	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2031	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2032	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2033	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2034	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2035	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2036	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2037	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2038	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2039	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2040
2041	blt::table configure $inner r* c* -resize none
2042	blt::table configure $inner r7 c4 -resize expand
2043	}
2044
2045
2046
2047	#
2048	# camera --
2049	#
2050	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2051	switch -- $option {
2052	"show" {
2053	puts [array get _view]
2054	}
2055	"set" {
2056	set who [lindex $args 0]
2057	set x $_view($who)
2058	set code [catch { string is double $x } result]
2059	if { $code != 0 \|\| !$result } {
2060	return
2061	}
2062	switch -- $who {
2063	"ortho" {
2064	if {$_view(ortho)} {
2065	SendCmd "camera mode ortho"
2066	} else {
2067	SendCmd "camera mode persp"
2068	}
2069	}
2070	"xpan" - "ypan" {
2071	PanCamera
2072	}
2073	"qx" - "qy" - "qz" - "qw" {
2074	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2075	$_arcball quaternion $q
2076	EventuallyRotate $q
2077	}
2078	"zoom" {
2079	SendCmd "camera zoom $_view(zoom)"
2080	}
2081	}
2082	}
2083	}
2084	}
2085
2086	itcl::body Rappture::VtkStreamlinesViewer::ConvertToVtkData { dataobj comp } {
2087	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
2088	set values [$dataobj values $comp]
2089	append out "# vtk DataFile Version 2.0 \n"
2090	append out "Test data \n"
2091	append out "ASCII \n"
2092	append out "DATASET STRUCTURED_POINTS \n"
2093	append out "DIMENSIONS $xN $yN 1 \n"
2094	append out "ORIGIN 0 0 0 \n"
2095	append out "SPACING 1 1 1 \n"
2096	append out "POINT_DATA [expr $xN * $yN] \n"
2097	append out "SCALARS field float 1 \n"
2098	append out "LOOKUP_TABLE default \n"
2099	append out [join $values "\n"]
2100	append out "\n"
2101	return $out
2102	}
2103
2104
2105	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2106	set bytes ""
2107	foreach dataobj [get] {
2108	foreach comp [$dataobj components] {
2109	set tag $dataobj-$comp
2110	#set contents [ConvertToVtkData $dataobj $comp]
2111	set contents [$dataobj blob $comp]
2112	append bytes "$contents\n\n"
2113	}
2114	}
2115	return [list .vtk $bytes]
2116	}
2117
2118	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2119	if { [image width $_image(download)] > 0 &&
2120	[image height $_image(download)] > 0 } {
2121	set bytes [$_image(download) data -format "jpeg -quality 100"]
2122	set bytes [Rappture::encoding::decode -as b64 $bytes]
2123	return [list .jpg $bytes]
2124	}
2125	return ""
2126	}
2127
2128	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2129	Rappture::Balloon $popup \
2130	-title "[Rappture::filexfer::label downloadWord] as..."
2131	set inner [$popup component inner]
2132	label $inner.summary -text "" -anchor w
2133	radiobutton $inner.vtk_button -text "VTK data file" \
2134	-variable [itcl::scope _downloadPopup(format)] \
2135	-font "Helvetica 9 " \
2136	-value vtk
2137	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2138	radiobutton $inner.image_button -text "Image File" \
2139	-variable [itcl::scope _downloadPopup(format)] \
2140	-value image
2141	Rappture::Tooltip::for $inner.image_button \
2142	"Save as digital image."
2143
2144	button $inner.ok -text "Save" \
2145	-highlightthickness 0 -pady 2 -padx 3 \
2146	-command $command \
2147	-compound left \
2148	-image [Rappture::icon download]
2149
2150	button $inner.cancel -text "Cancel" \
2151	-highlightthickness 0 -pady 2 -padx 3 \
2152	-command [list $popup deactivate] \
2153	-compound left \
2154	-image [Rappture::icon cancel]
2155
2156	blt::table $inner \
2157	0,0 $inner.summary -cspan 2 \
2158	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2159	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2160	4,1 $inner.cancel -width .9i -fill y \
2161	4,0 $inner.ok -padx 2 -width .9i -fill y
2162	blt::table configure $inner r3 -height 4
2163	blt::table configure $inner r4 -pady 4
2164	raise $inner.image_button
2165	$inner.vtk_button invoke
2166	return $inner
2167	}
2168
2169	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2170	# Parse style string.
2171	set tag $dataobj-$comp
2172	set style [$dataobj style $comp]
2173	array set settings {
2174	-color \#808080
2175	-edges 0
2176	-edgecolor black
2177	-linewidth 1.0
2178	-opacity 0.4
2179	-wireframe 0
2180	-lighting 1
2181	-seeds 1
2182	-seedcolor white
2183	-visible 1
2184	}
2185	if { $dataobj != $_first } {
2186	set settings(-opacity) 1
2187	}
2188	array set settings $style
2189	SendCmd "streamlines add $tag"
2190	SendCmd "streamlines seed visible off $tag"
2191	set seeds [$dataobj hints seeds]
2192	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2193	set length [string length $seeds]
2194	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2195	SendCmd "$seeds"
2196	set _seeds($dataobj) 1
2197	}
2198	SendCmd "cutplane add $tag"
2199	SendCmd "polydata add $tag"
2200	set _settings(volumeEdges) $settings(-edges)
2201	set _settings(volumeLighting) $settings(-lighting)
2202	set _settings(volumeOpacity) $settings(-opacity)
2203	set _settings(volumeWireframe) $settings(-wireframe)
2204	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2205	SetColormap $dataobj $comp
2206	}
2207
2208	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2209	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2210	return 0
2211	}
2212	return 1
2213	}
2214
2215	# ----------------------------------------------------------------------
2216	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2217	#
2218	# Invoked automatically whenever the "legend" command comes in from
2219	# the rendering server. Indicates that binary image data with the
2220	# specified <size> will follow.
2221	# ----------------------------------------------------------------------
2222	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2223	set _legendPending 0
2224	set _title $title
2225	regsub {\(mag\)} $title "" _title
2226	if { [IsConnected] } {
2227	set bytes [ReceiveBytes $size]
2228	if { ![info exists _image(legend)] } {
2229	set _image(legend) [image create photo]
2230	}
2231	$_image(legend) configure -data $bytes
2232	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2233	if { [catch {DrawLegend} errs] != 0 } {
2234	puts stderr errs=$errs
2235	}
2236	}
2237	}
2238
2239	#
2240	# DrawLegend --
2241	#
2242	# Draws the legend in it's own canvas which resides to the right
2243	# of the contour plot area.
2244	#
2245	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2246	set fname $_curFldName
2247	set c $itk_component(view)
2248	set w [winfo width $c]
2249	set h [winfo height $c]
2250	set font "Arial 8"
2251	set lineht [font metrics $font -linespace]
2252
2253	if { [info exists _fields($fname)] } {
2254	foreach { title units } $_fields($fname) break
2255	if { $units != "" } {
2256	set title [format "%s (%s)" $title $units]
2257	}
2258	} else {
2259	set title $fname
2260	}
2261	if { $_settings(legendVisible) } {
2262	set x [expr $w - 2]
2263	if { [$c find withtag "legend"] == "" } {
2264	set y 2
2265	$c create text $x $y \
2266	-anchor ne \
2267	-fill $itk_option(-plotforeground) -tags "title legend" \
2268	-font $font
2269	incr y $lineht
2270	$c create text $x $y \
2271	-anchor ne \
2272	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2273	-font $font
2274	incr y $lineht
2275	$c create image $x $y \
2276	-anchor ne \
2277	-image $_image(legend) -tags "colormap legend"
2278	$c create text $x [expr {$h-2}] \
2279	-anchor se \
2280	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2281	-font $font
2282	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2283	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2284	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2285	}
2286	$c bind title <ButtonPress> [itcl::code $this Combo post]
2287	$c bind title <Enter> [itcl::code $this Combo activate]
2288	$c bind title <Leave> [itcl::code $this Combo deactivate]
2289	# Reset the item coordinates according the current size of the plot.
2290	$c itemconfigure title -text $title
2291	if { [info exists _limits($_curFldName)] } {
2292	foreach {vmin vmax} $_limits($_curFldName) break
2293	$c itemconfigure vmin -text [format %g $vmin]
2294	$c itemconfigure vmax -text [format %g $vmax]
2295	}
2296	set y 2
2297	$c coords title $x $y
2298	incr y $lineht
2299	$c coords vmax $x $y
2300	incr y $lineht
2301	$c coords colormap $x $y
2302	$c coords vmin $x [expr {$h - 2}]
2303	}
2304	}
2305
2306	#
2307	# EnterLegend --
2308	#
2309	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2310	SetLegendTip $x $y
2311	}
2312
2313	#
2314	# MotionLegend --
2315	#
2316	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2317	Rappture::Tooltip::tooltip cancel
2318	set c $itk_component(view)
2319	SetLegendTip $x $y
2320	}
2321
2322	#
2323	# LeaveLegend --
2324	#
2325	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2326	Rappture::Tooltip::tooltip cancel
2327	.rappturetooltip configure -icon ""
2328	}
2329
2330	#
2331	# SetLegendTip --
2332	#
2333	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2334	set c $itk_component(view)
2335	set w [winfo width $c]
2336	set h [winfo height $c]
2337	set font "Arial 8"
2338	set lineht [font metrics $font -linespace]
2339
2340	set imgHeight [image height $_image(legend)]
2341	set coords [$c coords colormap]
2342	set imgX [expr $w - [image width $_image(legend)] - 2]
2343	set imgY [expr $y - 2 * ($lineht + 2)]
2344
2345	if { [info exists _fields($_title)] } {
2346	foreach { title units } $_fields($_title) break
2347	if { $units != "" } {
2348	set title [format "%s (%s)" $title $units]
2349	}
2350	} else {
2351	set title $_title
2352	}
2353	# Make a swatch of the selected color
2354	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2355	#puts stderr "out of range: $imgY"
2356	return
2357	}
2358	if { ![info exists _image(swatch)] } {
2359	set _image(swatch) [image create photo -width 24 -height 24]
2360	}
2361	set color [eval format "\#%02x%02x%02x" $pixel]
2362	$_image(swatch) put black -to 0 0 23 23
2363	$_image(swatch) put $color -to 1 1 22 22
2364	.rappturetooltip configure -icon $_image(swatch)
2365
2366	# Compute the value of the point
2367	if { [info exists _limits($_curFldName)] } {
2368	foreach {vmin vmax} $_limits($_curFldName) break
2369	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2370	set value [expr $t * ($vmax - $vmin) + $vmin]
2371	} else {
2372	set value 0.0
2373	}
2374	set tipx [expr $x + 15]
2375	set tipy [expr $y - 5]
2376	Rappture::Tooltip::text $c "$title $value"
2377	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2378	}
2379
2380
2381	# ----------------------------------------------------------------------
2382	# USAGE: Slice move x\|y\|z <newval>
2383	#
2384	# Called automatically when the user drags the slider to move the
2385	# cut plane that slices 3D data. Gets the current value from the
2386	# slider and moves the cut plane to the appropriate point in the
2387	# data set.
2388	# ----------------------------------------------------------------------
2389	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2390	switch -- $option {
2391	"move" {
2392	set axis [lindex $args 0]
2393	set oldval $_settings(axis-${axis}position)
2394	set newval [lindex $args 1]
2395	if {[llength $args] != 2} {
2396	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2397	}
2398	set newpos [expr {0.01*$newval}]
2399	SendCmd "cutplane slice $axis $newpos"
2400	}
2401	"tooltip" {
2402	set axis [lindex $args 0]
2403	set val [$itk_component(${axis}CutScale) get]
2404	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2405	}
2406	default {
2407	error "bad option \"$option\": should be axis, move, or tooltip"
2408	}
2409	}
2410	}
2411
2412
2413	# ----------------------------------------------------------------------
2414	# USAGE: _dropdown post
2415	# USAGE: _dropdown unpost
2416	# USAGE: _dropdown select
2417	#
2418	# Used internally to handle the dropdown list for this combobox. The
2419	# post/unpost options are invoked when the list is posted or unposted
2420	# to manage the relief of the controlling button. The select option
2421	# is invoked whenever there is a selection from the list, to assign
2422	# the value back to the gauge.
2423	# ----------------------------------------------------------------------
2424	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2425	set c $itk_component(view)
2426	switch -- $option {
2427	post {
2428	foreach { x1 y1 x2 y2 } [$c bbox title] break
2429	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2430	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2431	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2432	tk_popup $itk_component(fieldmenu) $x $y
2433	}
2434	activate {
2435	$c itemconfigure title -fill red
2436	}
2437	deactivate {
2438	$c itemconfigure title -fill white
2439	}
2440	invoke {
2441	$itk_component(field) value $_curFldLabel
2442	AdjustSetting field
2443	}
2444	default {
2445	error "bad option \"$option\": should be post, unpost, select"
2446	}
2447	}
2448	}
2449

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