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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 4767

Last change on this file since 4767 was 4767, checked in by ldelgass, 10 years ago
More syncing of code between clients
File size: 83.3 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkstreamlinesviewer - Vtk streamlines 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) 2004-2014 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	# The following methods are only used by this class.
65	private method AdjustSetting {what {value ""}}
66	private method BuildAxisTab {}
67	private method BuildCameraTab {}
68	private method BuildColormap { name colors }
69	private method BuildCutplaneTab {}
70	private method BuildDownloadPopup { widget command }
71	private method BuildStreamsTab {}
72	private method BuildVolumeTab {}
73	private method DrawLegend {}
74	private method Combo { option }
75	private method Connect {}
76	private method CurrentDatasets {args}
77	private method Disconnect {}
78	private method DoResize {}
79	private method DoReseed {}
80	private method DoRotate {}
81	private method EnterLegend { x y }
82	private method EventuallyResize { w h }
83	private method EventuallyReseed { numPoints }
84	private method EventuallyRotate { q }
85	private method EventuallySetCutplane { axis args }
86	private method GetImage { args }
87	private method GetVtkData { args }
88	private method InitSettings { args }
89	private method IsValidObject { dataobj }
90	private method LeaveLegend {}
91	private method MotionLegend { x y }
92	private method Pan {option x y}
93	private method PanCamera {}
94	private method Pick {x y}
95	private method QuaternionToView { q } {
96	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
97	}
98	private method Rebuild {}
99	private method ReceiveDataset { args }
100	private method ReceiveImage { args }
101	private method ReceiveLegend { colormap title vmin vmax size }
102	private method RequestLegend {}
103	private method Rotate {option x y}
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	private method ViewToQuaternion {} {
111	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
112	}
113	private method Zoom {option}
114
115	private variable _arcball ""
116
117	private variable _dlist "" ; # list of data objects
118	private variable _obj2datasets
119	private variable _obj2ovride ; # maps dataobj => style override
120	private variable _datasets ; # contains all the dataobj-component
121	; # datasets in the server
122	private variable _colormaps ; # contains all the colormaps
123	; # in the server.
124	private variable _dataset2style ;# maps dataobj-component to transfunc
125
126	private variable _click ; # info used for rotate operations
127	private variable _limits ; # autoscale min/max for all axes
128	private variable _view ; # view params for 3D view
129	private variable _settings
130	private variable _style; # Array of current component styles.
131	private variable _initialStyle; # Array of initial component styles.
132	private variable _reset 1; # indicates if camera needs to be reset
133	# to starting position.
134
135	private variable _first "" ; # This is the topmost dataset.
136	private variable _start 0
137	private variable _title ""
138	private variable _seeds
139
140	common _downloadPopup; # download options from popup
141	private common _hardcopy
142	private variable _width 0
143	private variable _height 0
144	private variable _resizePending 0
145	private variable _reseedPending 0
146	private variable _rotatePending 0
147	private variable _cutplanePending 0
148	private variable _legendPending 0
149	private variable _vectorFields
150	private variable _scalarFields
151	private variable _fields
152	private variable _curFldName ""
153	private variable _curFldLabel ""
154	private variable _field ""
155	private variable _numSeeds 200
156	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
157	}
158
159	itk::usual VtkStreamlinesViewer {
160	keep -background -foreground -cursor -font
161	keep -plotbackground -plotforeground
162	}
163
164	# ----------------------------------------------------------------------
165	# CONSTRUCTOR
166	# ----------------------------------------------------------------------
167	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
168	package require vtk
169	set _serverType "vtkvis"
170
171	EnableWaitDialog 2000
172
173	# Rebuild event
174	$_dispatcher register !rebuild
175	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
176
177	# Resize event
178	$_dispatcher register !resize
179	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
180
181	# Reseed event
182	$_dispatcher register !reseed
183	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
184
185	# Rotate event
186	$_dispatcher register !rotate
187	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
188
189	# Legend event
190	$_dispatcher register !legend
191	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
192
193	# X-Cutplane event
194	$_dispatcher register !xcutplane
195	$_dispatcher dispatch $this !xcutplane \
196	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
197
198	# Y-Cutplane event
199	$_dispatcher register !ycutplane
200	$_dispatcher dispatch $this !ycutplane \
201	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
202
203	# Z-Cutplane event
204	$_dispatcher register !zcutplane
205	$_dispatcher dispatch $this !zcutplane \
206	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
207
208	#
209	# Populate parser with commands handle incoming requests
210	#
211	$_parser alias image [itcl::code $this ReceiveImage]
212	$_parser alias dataset [itcl::code $this ReceiveDataset]
213	$_parser alias legend [itcl::code $this ReceiveLegend]
214
215	# Initialize the view to some default parameters.
216	array set _view {
217	-ortho 0
218	-qw 0.853553
219	-qx -0.353553
220	-qy 0.353553
221	-qz 0.146447
222	-xpan 0
223	-ypan 0
224	-zoom 1.0
225	}
226	set _arcball [blt::arcball create 100 100]
227	$_arcball quaternion [ViewToQuaternion]
228
229	array set _settings [subst {
230	axesVisible 1
231	axisLabelsVisible 1
232	axisMinorTicks 1
233	axisXGrid 0
234	axisYGrid 0
235	axisZGrid 0
236	cutplaneEdges 0
237	cutplaneLighting 1
238	cutplaneOpacity 100
239	cutplaneVisible 0
240	cutplaneWireframe 0
241	cutplaneXPosition 50
242	cutplaneXVisible 1
243	cutplaneYPosition 50
244	cutplaneYVisible 1
245	cutplaneZPosition 50
246	cutplaneZVisible 1
247	legendVisible 1
248	streamlinesLighting 1
249	streamlinesMode lines
250	streamlinesNumSeeds 200
251	streamlinesOpacity 100
252	streamlinesScale 1
253	streamlinesSeedsVisible 0
254	streamlinesVisible 1
255	volumeEdges 0
256	volumeLighting 1
257	volumeOpacity 40
258	volumeVisible 1
259	volumeWireframe 0
260	}]
261
262	itk_component add view {
263	canvas $itk_component(plotarea).view \
264	-highlightthickness 0 -borderwidth 0
265	} {
266	usual
267	ignore -highlightthickness -borderwidth -background
268	}
269
270	itk_component add fieldmenu {
271	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
272	-tearoff no
273	} {
274	usual
275	ignore -background -foreground -relief -tearoff
276	}
277	set c $itk_component(view)
278	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
279	bind $c <4> [itcl::code $this Zoom in 0.25]
280	bind $c <5> [itcl::code $this Zoom out 0.25]
281	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
282	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
283	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
284	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
285	bind $c <Enter> "focus %W"
286	bind $c <Control-F1> [itcl::code $this ToggleConsole]
287
288	# Fix the scrollregion in case we go off screen
289	$c configure -scrollregion [$c bbox all]
290
291	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
292	set _map(cwidth) -1
293	set _map(cheight) -1
294	set _map(zoom) 1.0
295	set _map(original) ""
296
297	set f [$itk_component(main) component controls]
298	itk_component add reset {
299	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon reset-view] \
302	-command [itcl::code $this Zoom reset]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(reset) -side top -padx 2 -pady 2
308	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
309
310	itk_component add zoomin {
311	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
312	-highlightthickness 0 \
313	-image [Rappture::icon zoom-in] \
314	-command [itcl::code $this Zoom in]
315	} {
316	usual
317	ignore -highlightthickness
318	}
319	pack $itk_component(zoomin) -side top -padx 2 -pady 2
320	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
321
322	itk_component add zoomout {
323	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
324	-highlightthickness 0 \
325	-image [Rappture::icon zoom-out] \
326	-command [itcl::code $this Zoom out]
327	} {
328	usual
329	ignore -highlightthickness
330	}
331	pack $itk_component(zoomout) -side top -padx 2 -pady 2
332	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
333
334	itk_component add volume {
335	Rappture::PushButton $f.volume \
336	-onimage [Rappture::icon volume-on] \
337	-offimage [Rappture::icon volume-off] \
338	-variable [itcl::scope _settings(volumeVisible)] \
339	-command [itcl::code $this AdjustSetting volumeVisible]
340	}
341	$itk_component(volume) select
342	Rappture::Tooltip::for $itk_component(volume) \
343	"Don't display the volume"
344	pack $itk_component(volume) -padx 2 -pady 2
345
346	itk_component add streamlines {
347	Rappture::PushButton $f.streamlines \
348	-onimage [Rappture::icon streamlines-on] \
349	-offimage [Rappture::icon streamlines-off] \
350	-variable [itcl::scope _settings(streamlinesVisible)] \
351	-command [itcl::code $this AdjustSetting streamlinesVisible] \
352	}
353	$itk_component(streamlines) select
354	Rappture::Tooltip::for $itk_component(streamlines) \
355	"Toggle the streamlines on/off"
356	pack $itk_component(streamlines) -padx 2 -pady 2
357
358	itk_component add cutplane {
359	Rappture::PushButton $f.cutplane \
360	-onimage [Rappture::icon cutbutton] \
361	-offimage [Rappture::icon cutbutton] \
362	-variable [itcl::scope _settings(cutplaneVisible)] \
363	-command [itcl::code $this AdjustSetting cutplaneVisible]
364	}
365	Rappture::Tooltip::for $itk_component(cutplane) \
366	"Show/Hide cutplanes"
367	pack $itk_component(cutplane) -padx 2 -pady 2
368
369
370	if { [catch {
371	BuildVolumeTab
372	BuildStreamsTab
373	BuildCutplaneTab
374	BuildAxisTab
375	BuildCameraTab
376	} errs] != 0 } {
377	puts stderr errs=$errs
378	}
379	# Legend
380
381	set _image(legend) [image create photo]
382	itk_component add legend {
383	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
384	} {
385	usual
386	ignore -highlightthickness
387	rename -background -plotbackground plotBackground Background
388	}
389
390	# Hack around the Tk panewindow. The problem is that the requested
391	# size of the 3d view isn't set until an image is retrieved from
392	# the server. So the panewindow uses the tiny size.
393	set w 10000
394	pack forget $itk_component(view)
395	blt::table $itk_component(plotarea) \
396	0,0 $itk_component(view) -fill both -reqwidth $w
397	blt::table configure $itk_component(plotarea) c1 -resize none
398
399	# Bindings for rotation via mouse
400	bind $itk_component(view) <ButtonPress-1> \
401	[itcl::code $this Rotate click %x %y]
402	bind $itk_component(view) <B1-Motion> \
403	[itcl::code $this Rotate drag %x %y]
404	bind $itk_component(view) <ButtonRelease-1> \
405	[itcl::code $this Rotate release %x %y]
406
407	# Bindings for panning via mouse
408	bind $itk_component(view) <ButtonPress-2> \
409	[itcl::code $this Pan click %x %y]
410	bind $itk_component(view) <B2-Motion> \
411	[itcl::code $this Pan drag %x %y]
412	bind $itk_component(view) <ButtonRelease-2> \
413	[itcl::code $this Pan release %x %y]
414
415	#bind $itk_component(view) <ButtonRelease-3> \
416	# [itcl::code $this Pick %x %y]
417
418	# Bindings for panning via keyboard
419	bind $itk_component(view) <KeyPress-Left> \
420	[itcl::code $this Pan set -10 0]
421	bind $itk_component(view) <KeyPress-Right> \
422	[itcl::code $this Pan set 10 0]
423	bind $itk_component(view) <KeyPress-Up> \
424	[itcl::code $this Pan set 0 -10]
425	bind $itk_component(view) <KeyPress-Down> \
426	[itcl::code $this Pan set 0 10]
427	bind $itk_component(view) <Shift-KeyPress-Left> \
428	[itcl::code $this Pan set -2 0]
429	bind $itk_component(view) <Shift-KeyPress-Right> \
430	[itcl::code $this Pan set 2 0]
431	bind $itk_component(view) <Shift-KeyPress-Up> \
432	[itcl::code $this Pan set 0 -2]
433	bind $itk_component(view) <Shift-KeyPress-Down> \
434	[itcl::code $this Pan set 0 2]
435
436	# Bindings for zoom via keyboard
437	bind $itk_component(view) <KeyPress-Prior> \
438	[itcl::code $this Zoom out]
439	bind $itk_component(view) <KeyPress-Next> \
440	[itcl::code $this Zoom in]
441
442	bind $itk_component(view) <Enter> "focus $itk_component(view)"
443
444	if {[string equal "x11" [tk windowingsystem]]} {
445	# Bindings for zoom via mouse
446	bind $itk_component(view) <4> [itcl::code $this Zoom out]
447	bind $itk_component(view) <5> [itcl::code $this Zoom in]
448	}
449
450	set _image(download) [image create photo]
451
452	eval itk_initialize $args
453	Connect
454	}
455
456	# ----------------------------------------------------------------------
457	# DESTRUCTOR
458	# ----------------------------------------------------------------------
459	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
460	Disconnect
461	image delete $_image(plot)
462	image delete $_image(download)
463	catch { blt::arcball destroy $_arcball }
464	}
465
466	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
467	if { $_width < 2 } {
468	set _width 500
469	}
470	if { $_height < 2 } {
471	set _height 500
472	}
473	set _start [clock clicks -milliseconds]
474	SendCmd "screen size $_width $_height"
475
476	set _legendPending 1
477	set _resizePending 0
478	}
479
480	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
481	SendCmd "camera orient [ViewToQuaternion]"
482	set _rotatePending 0
483	}
484
485	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
486	foreach dataset [CurrentDatasets -visible] {
487	foreach {dataobj comp} [split $dataset -] break
488	# This command works for either random or fmesh seeds
489	SendCmd "streamlines seed numpts $_numSeeds $dataset"
490	}
491	set _reseedPending 0
492	}
493
494	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
495	set _width $w
496	set _height $h
497	$_arcball resize $w $h
498	if { !$_resizePending } {
499	set _resizePending 1
500	$_dispatcher event -after 400 !resize
501	}
502	}
503
504	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
505	set _numSeeds $numPoints
506	if { !$_reseedPending } {
507	set _reseedPending 1
508	$_dispatcher event -after 600 !reseed
509	}
510	}
511
512	set rotate_delay 100
513
514	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
515	QuaternionToView $q
516	if { !$_rotatePending } {
517	set _rotatePending 1
518	global rotate_delay
519	$_dispatcher event -after $rotate_delay !rotate
520	}
521	}
522
523	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
524	if { !$_cutplanePending } {
525	set _cutplanePending 1
526	$_dispatcher event -after 100 !${axis}cutplane
527	}
528	}
529
530	# ----------------------------------------------------------------------
531	# USAGE: add <dataobj> ?<settings>?
532	#
533	# Clients use this to add a data object to the plot. The optional
534	# <settings> are used to configure the plot. Allowed settings are
535	# -color, -brightness, -width, -linestyle, and -raise.
536	# ----------------------------------------------------------------------
537	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
538	array set params {
539	-color auto
540	-width 1
541	-linestyle solid
542	-brightness 0
543	-raise 0
544	-description ""
545	-param ""
546	-type ""
547	}
548	array set params $settings
549	set params(-description) ""
550	set params(-param) ""
551	array set params $settings
552
553	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
554	# can't handle -autocolors yet
555	set params(-color) black
556	}
557	set pos [lsearch -exact $_dlist $dataobj]
558	if {$pos < 0} {
559	lappend _dlist $dataobj
560	}
561	set _obj2ovride($dataobj-color) $params(-color)
562	set _obj2ovride($dataobj-width) $params(-width)
563	set _obj2ovride($dataobj-raise) $params(-raise)
564	$_dispatcher event -idle !rebuild
565	}
566
567
568	# ----------------------------------------------------------------------
569	# USAGE: delete ?<dataobj1> <dataobj2> ...?
570	#
571	# Clients use this to delete a dataobj from the plot. If no dataobjs
572	# are specified, then all dataobjs are deleted. No data objects are
573	# deleted. They are only removed from the display list.
574	#
575	# ----------------------------------------------------------------------
576	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
577	if { [llength $args] == 0} {
578	set args $_dlist
579	}
580	# Delete all specified dataobjs
581	set changed 0
582	foreach dataobj $args {
583	set pos [lsearch -exact $_dlist $dataobj]
584	if { $pos < 0 } {
585	continue; # Don't know anything about it.
586	}
587	# Remove it from the dataobj list.
588	set _dlist [lreplace $_dlist $pos $pos]
589	array unset _obj2ovride $dataobj-*
590	array unset _settings $dataobj-*
591	set changed 1
592	}
593	# If anything changed, then rebuild the plot
594	if { $changed } {
595	$_dispatcher event -idle !rebuild
596	}
597	}
598
599	# ----------------------------------------------------------------------
600	# USAGE: get ?-objects?
601	# USAGE: get ?-visible?
602	# USAGE: get ?-image view?
603	#
604	# Clients use this to query the list of objects being plotted, in
605	# order from bottom to top of this result. The optional "-image"
606	# flag can also request the internal images being shown.
607	# ----------------------------------------------------------------------
608	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
609	if {[llength $args] == 0} {
610	set args "-objects"
611	}
612
613	set op [lindex $args 0]
614	switch -- $op {
615	"-objects" {
616	# put the dataobj list in order according to -raise options
617	set dlist {}
618	foreach dataobj $_dlist {
619	if { ![IsValidObject $dataobj] } {
620	continue
621	}
622	if {[info exists _obj2ovride($dataobj-raise)] &&
623	$_obj2ovride($dataobj-raise)} {
624	set dlist [linsert $dlist 0 $dataobj]
625	} else {
626	lappend dlist $dataobj
627	}
628	}
629	return $dlist
630	}
631	"-visible" {
632	set dlist {}
633	foreach dataobj $_dlist {
634	if { ![IsValidObject $dataobj] } {
635	continue
636	}
637	if { ![info exists _obj2ovride($dataobj-raise)] } {
638	# No setting indicates that the object isn't visible.
639	continue
640	}
641	# Otherwise use the -raise parameter to put the object to
642	# the front of the list.
643	if { $_obj2ovride($dataobj-raise) } {
644	set dlist [linsert $dlist 0 $dataobj]
645	} else {
646	lappend dlist $dataobj
647	}
648	}
649	return $dlist
650	}
651	-image {
652	if {[llength $args] != 2} {
653	error "wrong # args: should be \"get -image view\""
654	}
655	switch -- [lindex $args end] {
656	view {
657	return $_image(plot)
658	}
659	default {
660	error "bad image name \"[lindex $args end]\": should be view"
661	}
662	}
663	}
664	default {
665	error "bad option \"$op\": should be -objects or -image"
666	}
667	}
668	}
669
670	# ----------------------------------------------------------------------
671	# USAGE: scale ?<data1> <data2> ...?
672	#
673	# Sets the default limits for the overall plot according to the
674	# limits of the data for all of the given <data> objects. This
675	# accounts for all objects--even those not showing on the screen.
676	# Because of this, the limits are appropriate for all objects as
677	# the user scans through data in the ResultSet viewer.
678	# ----------------------------------------------------------------------
679	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
680	foreach dataobj $args {
681	foreach axis { x y z } {
682	set lim [$dataobj limits $axis]
683	if { ![info exists _limits($axis)] } {
684	set _limits($axis) $lim
685	continue
686	}
687	foreach {min max} $lim break
688	foreach {amin amax} $_limits($axis) break
689	if { $amin > $min } {
690	set amin $min
691	}
692	if { $amax < $max } {
693	set amax $max
694	}
695	set _limits($axis) [list $amin $amax]
696	}
697	foreach { fname lim } [$dataobj fieldlimits] {
698	if { ![info exists _limits($fname)] } {
699	set _limits($fname) $lim
700	continue
701	}
702	foreach {min max} $lim break
703	foreach {fmin fmax} $_limits($fname) break
704	if { $fmin > $min } {
705	set fmin $min
706	}
707	if { $fmax < $max } {
708	set fmax $max
709	}
710	set _limits($fname) [list $fmin $fmax]
711	}
712	}
713	}
714
715	# ----------------------------------------------------------------------
716	# USAGE: download coming
717	# USAGE: download controls <downloadCommand>
718	# USAGE: download now
719	#
720	# Clients use this method to create a downloadable representation
721	# of the plot. Returns a list of the form {ext string}, where
722	# "ext" is the file extension (indicating the type of data) and
723	# "string" is the data itself.
724	# ----------------------------------------------------------------------
725	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
726	switch $option {
727	coming {
728	if {[catch {
729	blt::winop snap $itk_component(plotarea) $_image(download)
730	}]} {
731	$_image(download) configure -width 1 -height 1
732	$_image(download) put #000000
733	}
734	}
735	controls {
736	set popup .vtkviewerdownload
737	if { ![winfo exists .vtkviewerdownload] } {
738	set inner [BuildDownloadPopup $popup [lindex $args 0]]
739	} else {
740	set inner [$popup component inner]
741	}
742	set _downloadPopup(image_controls) $inner.image_frame
743	set num [llength [get]]
744	set num [expr {($num == 1) ? "1 result" : "$num results"}]
745	set word [Rappture::filexfer::label downloadWord]
746	$inner.summary configure -text "$word $num in the following format:"
747	update idletasks ;# Fix initial sizes
748	return $popup
749	}
750	now {
751	set popup .vtkviewerdownload
752	if {[winfo exists .vtkviewerdownload]} {
753	$popup deactivate
754	}
755	switch -- $_downloadPopup(format) {
756	"image" {
757	return [$this GetImage [lindex $args 0]]
758	}
759	"vtk" {
760	return [$this GetVtkData [lindex $args 0]]
761	}
762	}
763	return ""
764	}
765	default {
766	error "bad option \"$option\": should be coming, controls, now"
767	}
768	}
769	}
770
771	# ----------------------------------------------------------------------
772	# USAGE: Connect ?<host:port>,<host:port>...?
773	#
774	# Clients use this method to establish a connection to a new
775	# server, or to reestablish a connection to the previous server.
776	# Any existing connection is automatically closed.
777	# ----------------------------------------------------------------------
778	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
779	set _hosts [GetServerList "vtkvis"]
780	if { "" == $_hosts } {
781	return 0
782	}
783	set result [VisViewer::Connect $_hosts]
784	if { $result } {
785	if { $_reportClientInfo } {
786	# Tell the server the viewer, hub, user and session.
787	# Do this immediately on connect before buffering any commands
788	global env
789
790	set info {}
791	set user "???"
792	if { [info exists env(USER)] } {
793	set user $env(USER)
794	}
795	set session "???"
796	if { [info exists env(SESSION)] } {
797	set session $env(SESSION)
798	}
799	lappend info "version" "$Rappture::version"
800	lappend info "build" "$Rappture::build"
801	lappend info "svnurl" "$Rappture::svnurl"
802	lappend info "installdir" "$Rappture::installdir"
803	lappend info "hub" [exec hostname]
804	lappend info "client" "vtkstreamlinesviewer"
805	lappend info "user" $user
806	lappend info "session" $session
807	SendCmd "clientinfo [list $info]"
808	}
809
810	set w [winfo width $itk_component(view)]
811	set h [winfo height $itk_component(view)]
812	EventuallyResize $w $h
813	}
814	return $result
815	}
816
817	#
818	# isconnected --
819	#
820	# Indicates if we are currently connected to the visualization server.
821	#
822	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
823	return [VisViewer::IsConnected]
824	}
825
826	#
827	# disconnect --
828	#
829	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
830	Disconnect
831	set _reset 1
832	}
833
834	#
835	# Disconnect --
836	#
837	# Clients use this method to disconnect from the current rendering
838	# server.
839	#
840	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
841	VisViewer::Disconnect
842
843	$_dispatcher cancel !rebuild
844	$_dispatcher cancel !resize
845	$_dispatcher cancel !reseed
846	$_dispatcher cancel !rotate
847	$_dispatcher cancel !xcutplane
848	$_dispatcher cancel !ycutplane
849	$_dispatcher cancel !zcutplane
850	$_dispatcher cancel !legend
851	# disconnected -- no more data sitting on server
852	array unset _datasets
853	array unset _data
854	array unset _colormaps
855	array unset _seeds
856	array unset _dataset2style
857	array unset _obj2datasets
858	}
859
860	# ----------------------------------------------------------------------
861	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
862	#
863	# Invoked automatically whenever the "image" command comes in from
864	# the rendering server. Indicates that binary image data with the
865	# specified <size> will follow.
866	# ----------------------------------------------------------------------
867	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
868	array set info {
869	-token "???"
870	-bytes 0
871	-type image
872	}
873	array set info $args
874	set bytes [ReceiveBytes $info(-bytes)]
875	if { $info(-type) == "image" } {
876	if 0 {
877	set f [open "last.ppm" "w"]
878	fconfigure $f -encoding binary
879	puts -nonewline $f $bytes
880	close $f
881	}
882	$_image(plot) configure -data $bytes
883	set time [clock seconds]
884	set date [clock format $time]
885	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
886	if { $_start > 0 } {
887	set finish [clock clicks -milliseconds]
888	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
889	set _start 0
890	}
891	} elseif { $info(type) == "print" } {
892	set tag $this-print-$info(-token)
893	set _hardcopy($tag) $bytes
894	}
895	if { $_legendPending } {
896	RequestLegend
897	}
898	}
899
900	#
901	# ReceiveDataset --
902	#
903	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
904	if { ![isconnected] } {
905	return
906	}
907	set option [lindex $args 0]
908	switch -- $option {
909	"scalar" {
910	set option [lindex $args 1]
911	switch -- $option {
912	"world" {
913	foreach { x y z value tag } [lrange $args 2 end] break
914	}
915	"pixel" {
916	foreach { x y value tag } [lrange $args 2 end] break
917	}
918	}
919	}
920	"vector" {
921	set option [lindex $args 1]
922	switch -- $option {
923	"world" {
924	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
925	}
926	"pixel" {
927	foreach { x y vx vy vz tag } [lrange $args 2 end] break
928	}
929	}
930	}
931	"names" {
932	foreach { name } [lindex $args 1] {
933	#puts stderr "Dataset: $name"
934	}
935	}
936	default {
937	error "unknown dataset option \"$option\" from server"
938	}
939	}
940	}
941
942	# ----------------------------------------------------------------------
943	# USAGE: Rebuild
944	#
945	# Called automatically whenever something changes that affects the
946	# data in the widget. Clears any existing data and rebuilds the
947	# widget to display new data.
948	# ----------------------------------------------------------------------
949	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
950	update
951	set w [winfo width $itk_component(view)]
952	set h [winfo height $itk_component(view)]
953	if { $w < 2 \|\| $h < 2 } {
954	$_dispatcher event -idle !rebuild
955	return
956	}
957
958	# Turn on buffering of commands to the server. We don't want to
959	# be preempted by a server disconnect/reconnect (which automatically
960	# generates a new call to Rebuild).
961	StartBufferingCommands
962	set _legendPending 1
963
964	set _first ""
965	if { $_reset } {
966	set _width $w
967	set _height $h
968	$_arcball resize $w $h
969	DoResize
970	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
971	axesVisible axisLabelsVisible axisMinorTicks
972	# This "imgflush" is to force an image returned before vtkvis starts
973	# reading a (big) dataset. This will display an empty plot with axes
974	# at the correct image size.
975	SendCmd "imgflush"
976	}
977
978	set _first ""
979	SendCmd "dataset visible 0"
980	foreach dataobj [get -objects] {
981	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
982	set _first $dataobj
983	}
984	set _obj2datasets($dataobj) ""
985	foreach comp [$dataobj components] {
986	set tag $dataobj-$comp
987	if { ![info exists _datasets($tag)] } {
988	set bytes [$dataobj vtkdata $comp]
989	set length [string length $bytes]
990	if 0 {
991	set f [open /tmp/vtkstreamlines.vtk "w"]
992	fconfigure $f -translation binary -encoding binary
993	puts -nonewline $f $bytes
994	close $f
995	}
996	if { $_reportClientInfo } {
997	set info {}
998	lappend info "tool_id" [$dataobj hints toolid]
999	lappend info "tool_name" [$dataobj hints toolname]
1000	lappend info "tool_title" [$dataobj hints tooltitle]
1001	lappend info "tool_command" [$dataobj hints toolcommand]
1002	lappend info "tool_revision" [$dataobj hints toolrevision]
1003	lappend info "dataset_label" [$dataobj hints label]
1004	lappend info "dataset_size" $length
1005	lappend info "dataset_tag" $tag
1006	SendCmd "clientinfo [list $info]"
1007	}
1008	SendCmd "dataset add $tag data follows $length"
1009	append _outbuf $bytes
1010	set _datasets($tag) 1
1011	SetObjectStyle $dataobj $comp
1012	}
1013	lappend _obj2datasets($dataobj) $tag
1014	if { [info exists _obj2ovride($dataobj-raise)] } {
1015	SendCmd "dataset visible 1 $tag"
1016	}
1017	}
1018	}
1019	if {"" != $_first} {
1020	set location [$_first hints camera]
1021	if { $location != "" } {
1022	array set view $location
1023	}
1024	foreach axis { x y z } {
1025	set label [$_first hints ${axis}label]
1026	if { $label != "" } {
1027	SendCmd [list axis name $axis $label]
1028	}
1029	set units [$_first hints ${axis}units]
1030	if { $units != "" } {
1031	SendCmd [list axis units $axis $units]
1032	}
1033	}
1034	$itk_component(field) choices delete 0 end
1035	$itk_component(fieldmenu) delete 0 end
1036	array unset _fields
1037	set _curFldName ""
1038	foreach cname [$_first components] {
1039	foreach fname [$_first fieldnames $cname] {
1040	if { [info exists _fields($fname)] } {
1041	continue
1042	}
1043	foreach { label units components } \
1044	[$_first fieldinfo $fname] break
1045	$itk_component(field) choices insert end "$fname" "$label"
1046	$itk_component(fieldmenu) add radiobutton -label "$label" \
1047	-value $label -variable [itcl::scope _curFldLabel] \
1048	-selectcolor red \
1049	-activebackground $itk_option(-plotbackground) \
1050	-activeforeground $itk_option(-plotforeground) \
1051	-font "Arial 8" \
1052	-command [itcl::code $this Combo invoke]
1053	set _fields($fname) [list $label $units $components]
1054	if { $_curFldName == "" } {
1055	set _curFldName $fname
1056	set _curFldLabel $label
1057	}
1058	}
1059	}
1060	$itk_component(field) value $_curFldLabel
1061	}
1062
1063	if { $_reset } {
1064	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1065	streamlinesVisible streamlinesColormap \
1066	streamlinesLighting \
1067	streamlinesColormap field \
1068	volumeVisible volumeEdges volumeLighting volumeOpacity \
1069	volumeWireframe \
1070	cutplaneVisible \
1071	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1072	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1073
1074	# Reset the camera and other view parameters
1075	$_arcball quaternion [ViewToQuaternion]
1076	if {$_view(-ortho)} {
1077	SendCmd "camera mode ortho"
1078	} else {
1079	SendCmd "camera mode persp"
1080	}
1081	DoRotate
1082	PanCamera
1083	Zoom reset
1084	SendCmd "camera reset"
1085	set _reset 0
1086	}
1087	# Actually write the commands to the server socket. If it fails, we don't
1088	# care. We're finished here.
1089	blt::busy hold $itk_component(hull)
1090	StopBufferingCommands
1091	blt::busy release $itk_component(hull)
1092	}
1093
1094	# ----------------------------------------------------------------------
1095	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1096	#
1097	# Returns a list of server IDs for the current datasets being displayed. This
1098	# is normally a single ID, but it might be a list of IDs if the current data
1099	# object has multiple components.
1100	# ----------------------------------------------------------------------
1101	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1102	set flag [lindex $args 0]
1103	switch -- $flag {
1104	"-all" {
1105	if { [llength $args] > 1 } {
1106	error "CurrentDatasets: can't specify dataobj after \"-all\""
1107	}
1108	set dlist [get -objects]
1109	}
1110	"-visible" {
1111	if { [llength $args] > 1 } {
1112	set dlist {}
1113	set args [lrange $args 1 end]
1114	foreach dataobj $args {
1115	if { [info exists _obj2ovride($dataobj-raise)] } {
1116	lappend dlist $dataobj
1117	}
1118	}
1119	} else {
1120	set dlist [get -visible]
1121	}
1122	}
1123	default {
1124	set dlist $args
1125	}
1126	}
1127	set rlist ""
1128	foreach dataobj $dlist {
1129	foreach comp [$dataobj components] {
1130	set tag $dataobj-$comp
1131	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1132	lappend rlist $tag
1133	}
1134	}
1135	}
1136	return $rlist
1137	}
1138
1139	# ----------------------------------------------------------------------
1140	# USAGE: Zoom in
1141	# USAGE: Zoom out
1142	# USAGE: Zoom reset
1143	#
1144	# Called automatically when the user clicks on one of the zoom
1145	# controls for this widget. Changes the zoom for the current view.
1146	# ----------------------------------------------------------------------
1147	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1148	switch -- $option {
1149	"in" {
1150	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1151	SendCmd "camera zoom $_view(-zoom)"
1152	}
1153	"out" {
1154	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1155	SendCmd "camera zoom $_view(-zoom)"
1156	}
1157	"reset" {
1158	array set _view {
1159	-qw 0.853553
1160	-qx -0.353553
1161	-qy 0.353553
1162	-qz 0.146447
1163	-xpan 0
1164	-ypan 0
1165	-zoom 1.0
1166	}
1167	if { $_first != "" } {
1168	set location [$_first hints camera]
1169	if { $location != "" } {
1170	array set _view $location
1171	}
1172	}
1173	$_arcball quaternion [ViewToQuaternion]
1174	DoRotate
1175	SendCmd "camera reset"
1176	}
1177	}
1178	}
1179
1180	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1181	set x $_view(-xpan)
1182	set y $_view(-ypan)
1183	SendCmd "camera pan $x $y"
1184	}
1185
1186	# ----------------------------------------------------------------------
1187	# USAGE: Rotate click <x> <y>
1188	# USAGE: Rotate drag <x> <y>
1189	# USAGE: Rotate release <x> <y>
1190	#
1191	# Called automatically when the user clicks/drags/releases in the
1192	# plot area. Moves the plot according to the user's actions.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1195	switch -- $option {
1196	"click" {
1197	$itk_component(view) configure -cursor fleur
1198	set _click(x) $x
1199	set _click(y) $y
1200	}
1201	"drag" {
1202	if {[array size _click] == 0} {
1203	Rotate click $x $y
1204	} else {
1205	set w [winfo width $itk_component(view)]
1206	set h [winfo height $itk_component(view)]
1207	if {$w <= 0 \|\| $h <= 0} {
1208	return
1209	}
1210
1211	if {[catch {
1212	# this fails sometimes for no apparent reason
1213	set dx [expr {double($x-$_click(x))/$w}]
1214	set dy [expr {double($y-$_click(y))/$h}]
1215	}]} {
1216	return
1217	}
1218	if { $dx == 0 && $dy == 0 } {
1219	return
1220	}
1221	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1222	EventuallyRotate $q
1223	set _click(x) $x
1224	set _click(y) $y
1225	}
1226	}
1227	"release" {
1228	Rotate drag $x $y
1229	$itk_component(view) configure -cursor ""
1230	catch {unset _click}
1231	}
1232	default {
1233	error "bad option \"$option\": should be click, drag, release"
1234	}
1235	}
1236	}
1237
1238	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1239	foreach tag [CurrentDatasets -visible] {
1240	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1241	}
1242	}
1243
1244	# ----------------------------------------------------------------------
1245	# USAGE: $this Pan click x y
1246	# $this Pan drag x y
1247	# $this Pan release x y
1248	#
1249	# Called automatically when the user clicks on one of the zoom
1250	# controls for this widget. Changes the zoom for the current view.
1251	# ----------------------------------------------------------------------
1252	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1253	switch -- $option {
1254	"set" {
1255	set w [winfo width $itk_component(view)]
1256	set h [winfo height $itk_component(view)]
1257	set x [expr $x / double($w)]
1258	set y [expr $y / double($h)]
1259	set _view(-xpan) [expr $_view(-xpan) + $x]
1260	set _view(-ypan) [expr $_view(-ypan) + $y]
1261	PanCamera
1262	return
1263	}
1264	"click" {
1265	set _click(x) $x
1266	set _click(y) $y
1267	$itk_component(view) configure -cursor hand1
1268	}
1269	"drag" {
1270	if { ![info exists _click(x)] } {
1271	set _click(x) $x
1272	}
1273	if { ![info exists _click(y)] } {
1274	set _click(y) $y
1275	}
1276	set w [winfo width $itk_component(view)]
1277	set h [winfo height $itk_component(view)]
1278	set dx [expr ($_click(x) - $x)/double($w)]
1279	set dy [expr ($_click(y) - $y)/double($h)]
1280	set _click(x) $x
1281	set _click(y) $y
1282	set _view(-xpan) [expr $_view(-xpan) - $dx]
1283	set _view(-ypan) [expr $_view(-ypan) - $dy]
1284	PanCamera
1285	}
1286	"release" {
1287	Pan drag $x $y
1288	$itk_component(view) configure -cursor ""
1289	}
1290	default {
1291	error "unknown option \"$option\": should set, click, drag, or release"
1292	}
1293	}
1294	}
1295
1296	# ----------------------------------------------------------------------
1297	# USAGE: InitSettings <what> ?<value>?
1298	#
1299	# Used internally to update rendering settings whenever parameters
1300	# change in the popup settings panel. Sends the new settings off
1301	# to the back end.
1302	# ----------------------------------------------------------------------
1303	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1304	foreach spec $args {
1305	if { [info exists _settings($_first-$spec)] } {
1306	# Reset global setting with dataobj specific setting
1307	set _settings($spec) $_settings($_first-$spec)
1308	}
1309	AdjustSetting $spec
1310	}
1311	}
1312
1313	#
1314	# AdjustSetting --
1315	#
1316	# Changes/updates a specific setting in the widget. There are
1317	# usually user-setable option. Commands are sent to the render
1318	# server.
1319	#
1320	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1321	if { ![isconnected] } {
1322	return
1323	}
1324	switch -- $what {
1325	"volumeOpacity" {
1326	set val $_settings($what)
1327	set sval [expr { 0.01 * double($val) }]
1328	SendCmd "polydata opacity $sval"
1329	}
1330	"volumeWireframe" {
1331	set bool $_settings($what)
1332	SendCmd "polydata wireframe $bool"
1333	}
1334	"volumeVisible" {
1335	set bool $_settings($what)
1336	SendCmd "polydata visible $bool"
1337	if { $bool } {
1338	Rappture::Tooltip::for $itk_component(volume) \
1339	"Hide the volume"
1340	} else {
1341	Rappture::Tooltip::for $itk_component(volume) \
1342	"Show the volume"
1343	}
1344	}
1345	"volumeLighting" {
1346	set bool $_settings($what)
1347	SendCmd "polydata lighting $bool"
1348	}
1349	"volumeEdges" {
1350	set bool $_settings($what)
1351	SendCmd "polydata edges $bool"
1352	}
1353	"axesVisible" {
1354	set bool $_settings($what)
1355	SendCmd "axis visible all $bool"
1356	}
1357	"axisLabelsVisible" {
1358	set bool $_settings($what)
1359	SendCmd "axis labels all $bool"
1360	}
1361	"axisMinorTicks" {
1362	set bool $_settings($what)
1363	SendCmd "axis minticks all $bool"
1364	}
1365	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1366	set axis [string tolower [string range $what 4 4]]
1367	set bool $_settings($what)
1368	SendCmd "axis grid $axis $bool"
1369	}
1370	"axis-mode" {
1371	set mode [$itk_component(axismode) value]
1372	set mode [$itk_component(axismode) translate $mode]
1373	set _settings($what) $mode
1374	SendCmd "axis flymode $mode"
1375	}
1376	"cutplaneEdges" {
1377	set bool $_settings($what)
1378	SendCmd "cutplane edges $bool"
1379	}
1380	"cutplaneVisible" {
1381	set bool $_settings($what)
1382	SendCmd "cutplane visible $bool"
1383	}
1384	"cutplaneWireframe" {
1385	set bool $_settings($what)
1386	SendCmd "cutplane wireframe $bool"
1387	}
1388	"cutplaneLighting" {
1389	set bool $_settings($what)
1390	SendCmd "cutplane lighting $bool"
1391	}
1392	"cutplaneOpacity" {
1393	set val $_settings($what)
1394	set sval [expr { 0.01 * double($val) }]
1395	SendCmd "cutplane opacity $sval"
1396	}
1397	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1398	set axis [string tolower [string range $what 8 8]]
1399	set bool $_settings($what)
1400	if { $bool } {
1401	$itk_component(${axis}CutScale) configure -state normal \
1402	-troughcolor white
1403	} else {
1404	$itk_component(${axis}CutScale) configure -state disabled \
1405	-troughcolor grey82
1406	}
1407	SendCmd "cutplane axis $axis $bool"
1408	}
1409	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1410	set axis [string tolower [string range $what 8 8]]
1411	set pos [expr $_settings($what) * 0.01]
1412	SendCmd "cutplane slice ${axis} ${pos}"
1413	set _cutplanePending 0
1414	}
1415	"streamlinesSeedsVisible" {
1416	set bool $_settings($what)
1417	SendCmd "streamlines seed visible $bool"
1418	}
1419	"streamlinesNumSeeds" {
1420	set density $_settings($what)
1421	EventuallyReseed $density
1422	}
1423	"streamlinesVisible" {
1424	set bool $_settings($what)
1425	SendCmd "streamlines visible $bool"
1426	if { $bool } {
1427	Rappture::Tooltip::for $itk_component(streamlines) \
1428	"Hide the streamlines"
1429	} else {
1430	Rappture::Tooltip::for $itk_component(streamlines) \
1431	"Show the streamlines"
1432	}
1433	}
1434	"streamlinesMode" {
1435	set mode [$itk_component(streammode) value]
1436	set _settings(streamlinesMode) $mode
1437	switch -- $mode {
1438	"lines" {
1439	SendCmd "streamlines lines"
1440	}
1441	"ribbons" {
1442	SendCmd "streamlines ribbons 3 0"
1443	}
1444	"tubes" {
1445	SendCmd "streamlines tubes 5 3"
1446	}
1447	}
1448	}
1449	"streamlinesColormap" {
1450	set colormap [$itk_component(colormap) value]
1451	set _settings(streamlinesColormap) $colormap
1452	foreach dataset [CurrentDatasets -visible $_first] {
1453	foreach {dataobj comp} [split $dataset -] break
1454	ChangeColormap $dataobj $comp $colormap
1455	}
1456	set _legendPending 1
1457	}
1458	"streamlinesOpacity" {
1459	set val $_settings($what)
1460	set sval [expr { 0.01 * double($val) }]
1461	SendCmd "streamlines opacity $sval"
1462	}
1463	"streamlinesScale" {
1464	set val $_settings($what)
1465	set sval [expr { 0.01 * double($val) }]
1466	SendCmd "streamlines scale $sval $sval $sval"
1467	}
1468	"streamlinesLighting" {
1469	set bool $_settings($what)
1470	SendCmd "streamlines lighting $bool"
1471	}
1472	"field" {
1473	set label [$itk_component(field) value]
1474	set fname [$itk_component(field) translate $label]
1475	set _settings(field) $fname
1476	if { [info exists _fields($fname)] } {
1477	foreach { label units components } $_fields($fname) break
1478	if { $components > 1 } {
1479	set _colorMode vmag
1480	} else {
1481	set _colorMode scalar
1482	}
1483	set _curFldName $fname
1484	set _curFldLabel $label
1485	} else {
1486	puts stderr "unknown field \"$fname\""
1487	return
1488	}
1489	# Get the new limits because the field changed.
1490	if { ![info exists _limits($_curFldName)] } {
1491	SendCmd "dataset maprange all"
1492	} else {
1493	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1494	}
1495	SendCmd "streamlines colormode $_colorMode $_curFldName"
1496	SendCmd "cutplane colormode $_colorMode $_curFldName"
1497	DrawLegend
1498	}
1499	default {
1500	error "don't know how to fix $what"
1501	}
1502	}
1503	}
1504
1505	#
1506	# RequestLegend --
1507	#
1508	# Request a new legend from the server. The size of the legend
1509	# is determined from the height of the canvas. It will be rotated
1510	# to be vertical when drawn.
1511	#
1512	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1513	set font "Arial 8"
1514	set lineht [font metrics $font -linespace]
1515	set w 12
1516	set h [expr {$_height - 3 * ($lineht + 2)}]
1517	if { $h < 1 } {
1518	return
1519	}
1520	# Set the legend on the first streamlines dataset.
1521	foreach dataset [CurrentDatasets -visible $_first] {
1522	foreach {dataobj comp} [split $dataset -] break
1523	if { [info exists _dataset2style($dataset)] } {
1524	SendCmdNoWait \
1525	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1526	break;
1527	}
1528	}
1529	}
1530
1531	#
1532	# ChangeColormap --
1533	#
1534	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1535	set tag $dataobj-$comp
1536	if { ![info exist _style($tag)] } {
1537	error "no initial colormap"
1538	}
1539	array set style $_style($tag)
1540	set style(-color) $color
1541	set _style($tag) [array get style]
1542	SetColormap $dataobj $comp
1543	}
1544
1545	#
1546	# SetColormap --
1547	#
1548	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1549	array set style {
1550	-color BCGYR
1551	-levels 6
1552	-opacity 1.0
1553	}
1554	set tag $dataobj-$comp
1555	if { ![info exists _initialStyle($tag)] } {
1556	# Save the initial component style.
1557	set _initialStyle($tag) [$dataobj style $comp]
1558	}
1559
1560	# Override defaults with initial style defined in xml.
1561	array set style $_initialStyle($tag)
1562
1563	if { ![info exists _style($tag)] } {
1564	set _style($tag) [array get style]
1565	}
1566	# Override initial style with current style.
1567	array set style $_style($tag)
1568
1569	set name "$style(-color):$style(-levels):$style(-opacity)"
1570	if { ![info exists _colormaps($name)] } {
1571	BuildColormap $name [array get style]
1572	set _colormaps($name) 1
1573	}
1574	if { ![info exists _dataset2style($tag)] \|\|
1575	$_dataset2style($tag) != $name } {
1576	SendCmd "streamlines colormap $name $tag"
1577	SendCmd "cutplane colormap $name $tag"
1578	set _dataset2style($tag) $name
1579	}
1580	}
1581
1582
1583	#
1584	# BuildColormap --
1585	#
1586	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1587	array set style $styles
1588	set cmap [ColorsToColormap $style(-color)]
1589	if { [llength $cmap] == 0 } {
1590	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1591	}
1592	if { ![info exists _settings(volumeOpacity)] } {
1593	set _settings(volumeOpacity) $style(-opacity)
1594	}
1595	set max $_settings(volumeOpacity)
1596
1597	set wmap "0.0 1.0 1.0 1.0"
1598	SendCmd "colormap add $name { $cmap } { $wmap }"
1599	}
1600
1601	# ----------------------------------------------------------------------
1602	# CONFIGURATION OPTION: -plotbackground
1603	# ----------------------------------------------------------------------
1604	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1605	if { [isconnected] } {
1606	set rgb [Color2RGB $itk_option(-plotbackground)]
1607	SendCmd "screen bgcolor $rgb"
1608	}
1609	}
1610
1611	# ----------------------------------------------------------------------
1612	# CONFIGURATION OPTION: -plotforeground
1613	# ----------------------------------------------------------------------
1614	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1615	if { [isconnected] } {
1616	set rgb [Color2RGB $itk_option(-plotforeground)]
1617	SendCmd "axis color all $rgb"
1618	SendCmd "outline color $rgb"
1619	SendCmd "cutplane color $rgb"
1620	}
1621	}
1622
1623	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1624
1625	set fg [option get $itk_component(hull) font Font]
1626	#set bfg [option get $itk_component(hull) boldFont Font]
1627
1628	set inner [$itk_component(main) insert end \
1629	-title "Volume Settings" \
1630	-icon [Rappture::icon volume-on]]
1631	$inner configure -borderwidth 4
1632
1633	checkbutton $inner.volume \
1634	-text "Show Volume" \
1635	-variable [itcl::scope _settings(volumeVisible)] \
1636	-command [itcl::code $this AdjustSetting volumeVisible] \
1637	-font "Arial 9"
1638
1639	checkbutton $inner.wireframe \
1640	-text "Show Wireframe" \
1641	-variable [itcl::scope _settings(volumeWireframe)] \
1642	-command [itcl::code $this AdjustSetting volumeWireframe] \
1643	-font "Arial 9"
1644
1645	checkbutton $inner.lighting \
1646	-text "Enable Lighting" \
1647	-variable [itcl::scope _settings(volumeLighting)] \
1648	-command [itcl::code $this AdjustSetting volumeLighting] \
1649	-font "Arial 9"
1650
1651	checkbutton $inner.edges \
1652	-text "Show Edges" \
1653	-variable [itcl::scope _settings(volumeEdges)] \
1654	-command [itcl::code $this AdjustSetting volumeEdges] \
1655	-font "Arial 9"
1656
1657	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1658	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1659	-variable [itcl::scope _settings(volumeOpacity)] \
1660	-width 10 \
1661	-showvalue off \
1662	-command [itcl::code $this AdjustSetting volumeOpacity]
1663
1664	blt::table $inner \
1665	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1666	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1667	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1668	3,0 $inner.opacity_l -anchor w -pady 2 \
1669	3,1 $inner.opacity -fill x -pady 2
1670
1671	blt::table configure $inner r* c* -resize none
1672	blt::table configure $inner r4 c1 -resize expand
1673	}
1674
1675
1676	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1677
1678	set fg [option get $itk_component(hull) font Font]
1679	#set bfg [option get $itk_component(hull) boldFont Font]
1680
1681	set inner [$itk_component(main) insert end \
1682	-title "Streams Settings" \
1683	-icon [Rappture::icon streamlines-on]]
1684	$inner configure -borderwidth 4
1685
1686	checkbutton $inner.streamlines \
1687	-text "Show Streamlines" \
1688	-variable [itcl::scope _settings(streamlinesVisible)] \
1689	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1690	-font "Arial 9"
1691
1692	checkbutton $inner.lighting \
1693	-text "Enable Lighting" \
1694	-variable [itcl::scope _settings(streamlinesLighting)] \
1695	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1696	-font "Arial 9"
1697
1698	checkbutton $inner.seeds \
1699	-text "Show Seeds" \
1700	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1701	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1702	-font "Arial 9"
1703
1704	label $inner.mode_l -text "Mode" -font "Arial 9"
1705	itk_component add streammode {
1706	Rappture::Combobox $inner.mode -width 10 -editable no
1707	}
1708	$inner.mode choices insert end \
1709	"lines" "lines" \
1710	"ribbons" "ribbons" \
1711	"tubes" "tubes"
1712	$itk_component(streammode) value $_settings(streamlinesMode)
1713	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1714
1715	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1716	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1717	-variable [itcl::scope _settings(streamlinesOpacity)] \
1718	-width 10 \
1719	-showvalue off \
1720	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1721
1722	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1723	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1724	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1725	-width 10 \
1726	-showvalue on \
1727	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1728
1729	label $inner.scale_l -text "Scale" -font "Arial 9"
1730	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1731	-variable [itcl::scope _settings(streamlinesScale)] \
1732	-width 10 \
1733	-showvalue off \
1734	-command [itcl::code $this AdjustSetting streamlinesScale]
1735
1736	label $inner.field_l -text "Color by" -font "Arial 9"
1737	itk_component add field {
1738	Rappture::Combobox $inner.field -width 10 -editable no
1739	}
1740	bind $inner.field <<Value>> \
1741	[itcl::code $this AdjustSetting field]
1742
1743	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1744	itk_component add colormap {
1745	Rappture::Combobox $inner.colormap -width 10 -editable no
1746	}
1747	$inner.colormap choices insert end [GetColormapList]
1748
1749	$itk_component(colormap) value "BCGYR"
1750	bind $inner.colormap <<Value>> \
1751	[itcl::code $this AdjustSetting streamlinesColormap]
1752
1753	blt::table $inner \
1754	0,0 $inner.field_l -anchor w -pady 2 \
1755	0,1 $inner.field -fill x -pady 2 \
1756	1,0 $inner.colormap_l -anchor w -pady 2 \
1757	1,1 $inner.colormap -fill x -pady 2 \
1758	2,0 $inner.mode_l -anchor w -pady 2 \
1759	2,1 $inner.mode -fill x -pady 2 \
1760	3,0 $inner.opacity_l -anchor w -pady 2 \
1761	3,1 $inner.opacity -fill x -pady 2 \
1762	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1763	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1764	7,0 $inner.density_l -anchor w -pady 2 \
1765	7,1 $inner.density -fill x -pady 2 \
1766
1767	blt::table configure $inner r* c* -resize none
1768	blt::table configure $inner r10 c1 c2 -resize expand
1769	}
1770
1771	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1772
1773	set fg [option get $itk_component(hull) font Font]
1774	#set bfg [option get $itk_component(hull) boldFont Font]
1775
1776	set inner [$itk_component(main) insert end \
1777	-title "Axis Settings" \
1778	-icon [Rappture::icon axis2]]
1779	$inner configure -borderwidth 4
1780
1781	checkbutton $inner.visible \
1782	-text "Axes" \
1783	-variable [itcl::scope _settings(axesVisible)] \
1784	-command [itcl::code $this AdjustSetting axesVisible] \
1785	-font "Arial 9"
1786
1787	checkbutton $inner.labels \
1788	-text "Axis Labels" \
1789	-variable [itcl::scope _settings(axisLabelsVisible)] \
1790	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1791	-font "Arial 9"
1792	label $inner.grid_l -text "Grid" -font "Arial 9"
1793	checkbutton $inner.xgrid \
1794	-text "X" \
1795	-variable [itcl::scope _settings(axisXGrid)] \
1796	-command [itcl::code $this AdjustSetting axisXGrid] \
1797	-font "Arial 9"
1798	checkbutton $inner.ygrid \
1799	-text "Y" \
1800	-variable [itcl::scope _settings(axisYGrid)] \
1801	-command [itcl::code $this AdjustSetting axisYGrid] \
1802	-font "Arial 9"
1803	checkbutton $inner.zgrid \
1804	-text "Z" \
1805	-variable [itcl::scope _settings(axisZGrid)] \
1806	-command [itcl::code $this AdjustSetting axisZGrid] \
1807	-font "Arial 9"
1808	checkbutton $inner.minorticks \
1809	-text "Minor Ticks" \
1810	-variable [itcl::scope _settings(axisMinorTicks)] \
1811	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1812	-font "Arial 9"
1813
1814	label $inner.mode_l -text "Mode" -font "Arial 9"
1815
1816	itk_component add axismode {
1817	Rappture::Combobox $inner.mode -width 10 -editable no
1818	}
1819	$inner.mode choices insert end \
1820	"static_triad" "static" \
1821	"closest_triad" "closest" \
1822	"furthest_triad" "farthest" \
1823	"outer_edges" "outer"
1824	$itk_component(axismode) value "static"
1825	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1826
1827	blt::table $inner \
1828	0,0 $inner.visible -anchor w -cspan 4 \
1829	1,0 $inner.labels -anchor w -cspan 4 \
1830	2,0 $inner.minorticks -anchor w -cspan 4 \
1831	4,0 $inner.grid_l -anchor w \
1832	4,1 $inner.xgrid -anchor w \
1833	4,2 $inner.ygrid -anchor w \
1834	4,3 $inner.zgrid -anchor w \
1835	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1836	5,1 $inner.mode -fill x -cspan 3
1837
1838	blt::table configure $inner r* c* -resize none
1839	blt::table configure $inner r7 c6 -resize expand
1840	blt::table configure $inner r3 -height 0.125i
1841	}
1842
1843	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1844	set inner [$itk_component(main) insert end \
1845	-title "Camera Settings" \
1846	-icon [Rappture::icon camera]]
1847	$inner configure -borderwidth 4
1848
1849	label $inner.view_l -text "view" -font "Arial 9"
1850	set f [frame $inner.view]
1851	foreach side { front back left right top bottom } {
1852	button $f.$side -image [Rappture::icon view$side] \
1853	-command [itcl::code $this SetOrientation $side]
1854	Rappture::Tooltip::for $f.$side "Change the view to $side"
1855	pack $f.$side -side left
1856	}
1857
1858	blt::table $inner \
1859	0,0 $inner.view_l -anchor e -pady 2 \
1860	0,1 $inner.view -anchor w -pady 2
1861
1862	set labels { qx qy qz qw xpan ypan zoom }
1863	set row 1
1864	foreach tag $labels {
1865	label $inner.${tag}label -text $tag -font "Arial 9"
1866	entry $inner.${tag} -font "Arial 9" -bg white \
1867	-textvariable [itcl::scope _view(-$tag)]
1868	bind $inner.${tag} <Return> \
1869	[itcl::code $this camera set -${tag}]
1870	bind $inner.${tag} <KP_Enter> \
1871	[itcl::code $this camera set -${tag}]
1872	blt::table $inner \
1873	$row,0 $inner.${tag}label -anchor e -pady 2 \
1874	$row,1 $inner.${tag} -anchor w -pady 2
1875	blt::table configure $inner r$row -resize none
1876	incr row
1877	}
1878	checkbutton $inner.ortho \
1879	-text "Orthographic Projection" \
1880	-variable [itcl::scope _view(-ortho)] \
1881	-command [itcl::code $this camera set -ortho] \
1882	-font "Arial 9"
1883	blt::table $inner \
1884	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1885	blt::table configure $inner r$row -resize none
1886	incr row
1887
1888	blt::table configure $inner c* r* -resize none
1889	blt::table configure $inner c2 -resize expand
1890	blt::table configure $inner r$row -resize expand
1891	}
1892
1893	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1894
1895	set fg [option get $itk_component(hull) font Font]
1896
1897	set inner [$itk_component(main) insert end \
1898	-title "Cutplane Settings" \
1899	-icon [Rappture::icon cutbutton]]
1900
1901	$inner configure -borderwidth 4
1902
1903	checkbutton $inner.visible \
1904	-text "Show Cutplanes" \
1905	-variable [itcl::scope _settings(cutplaneVisible)] \
1906	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1907	-font "Arial 9"
1908
1909	checkbutton $inner.wireframe \
1910	-text "Show Wireframe" \
1911	-variable [itcl::scope _settings(cutplaneWireframe)] \
1912	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1913	-font "Arial 9"
1914
1915	checkbutton $inner.lighting \
1916	-text "Enable Lighting" \
1917	-variable [itcl::scope _settings(cutplaneLighting)] \
1918	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1919	-font "Arial 9"
1920
1921	checkbutton $inner.edges \
1922	-text "Show Edges" \
1923	-variable [itcl::scope _settings(cutplaneEdges)] \
1924	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1925	-font "Arial 9"
1926
1927	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1928	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1929	-variable [itcl::scope _settings(cutplaneOpacity)] \
1930	-width 10 \
1931	-showvalue off \
1932	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1933	$inner.opacity set $_settings(cutplaneOpacity)
1934
1935	# X-value slicer...
1936	itk_component add xCutButton {
1937	Rappture::PushButton $inner.xbutton \
1938	-onimage [Rappture::icon x-cutplane-red] \
1939	-offimage [Rappture::icon x-cutplane-red] \
1940	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1941	-variable [itcl::scope _settings(cutplaneXVisible)]
1942	}
1943	Rappture::Tooltip::for $itk_component(xCutButton) \
1944	"Toggle the X-axis cutplane on/off"
1945	$itk_component(xCutButton) select
1946
1947	itk_component add xCutScale {
1948	::scale $inner.xval -from 100 -to 0 \
1949	-width 10 -orient vertical -showvalue yes \
1950	-borderwidth 1 -highlightthickness 0 \
1951	-command [itcl::code $this EventuallySetCutplane x] \
1952	-variable [itcl::scope _settings(cutplaneXPosition)] \
1953	-foreground red3 -font "Arial 9 bold"
1954	} {
1955	usual
1956	ignore -borderwidth -highlightthickness -foreground -font
1957	}
1958	# Set the default cutplane value before disabling the scale.
1959	$itk_component(xCutScale) set 50
1960	$itk_component(xCutScale) configure -state disabled
1961	Rappture::Tooltip::for $itk_component(xCutScale) \
1962	"@[itcl::code $this Slice tooltip x]"
1963
1964	# Y-value slicer...
1965	itk_component add yCutButton {
1966	Rappture::PushButton $inner.ybutton \
1967	-onimage [Rappture::icon y-cutplane-green] \
1968	-offimage [Rappture::icon y-cutplane-green] \
1969	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1970	-variable [itcl::scope _settings(cutplaneYVisible)]
1971	}
1972	Rappture::Tooltip::for $itk_component(yCutButton) \
1973	"Toggle the Y-axis cutplane on/off"
1974	$itk_component(yCutButton) select
1975
1976	itk_component add yCutScale {
1977	::scale $inner.yval -from 100 -to 0 \
1978	-width 10 -orient vertical -showvalue yes \
1979	-borderwidth 1 -highlightthickness 0 \
1980	-command [itcl::code $this EventuallySetCutplane y] \
1981	-variable [itcl::scope _settings(cutplaneYPosition)] \
1982	-foreground green3 -font "Arial 9 bold"
1983	} {
1984	usual
1985	ignore -borderwidth -highlightthickness -foreground -font
1986	}
1987	Rappture::Tooltip::for $itk_component(yCutScale) \
1988	"@[itcl::code $this Slice tooltip y]"
1989	# Set the default cutplane value before disabling the scale.
1990	$itk_component(yCutScale) set 50
1991	$itk_component(yCutScale) configure -state disabled
1992
1993	# Z-value slicer...
1994	itk_component add zCutButton {
1995	Rappture::PushButton $inner.zbutton \
1996	-onimage [Rappture::icon z-cutplane-blue] \
1997	-offimage [Rappture::icon z-cutplane-blue] \
1998	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1999	-variable [itcl::scope _settings(cutplaneZVisible)]
2000	}
2001	Rappture::Tooltip::for $itk_component(zCutButton) \
2002	"Toggle the Z-axis cutplane on/off"
2003	$itk_component(zCutButton) select
2004
2005	itk_component add zCutScale {
2006	::scale $inner.zval -from 100 -to 0 \
2007	-width 10 -orient vertical -showvalue yes \
2008	-borderwidth 1 -highlightthickness 0 \
2009	-command [itcl::code $this EventuallySetCutplane z] \
2010	-variable [itcl::scope _settings(cutplaneZPosition)] \
2011	-foreground blue3 -font "Arial 9 bold"
2012	} {
2013	usual
2014	ignore -borderwidth -highlightthickness -foreground -font
2015	}
2016	$itk_component(zCutScale) set 50
2017	$itk_component(zCutScale) configure -state disabled
2018	Rappture::Tooltip::for $itk_component(zCutScale) \
2019	"@[itcl::code $this Slice tooltip z]"
2020
2021	blt::table $inner \
2022	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2023	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2024	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2025	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2026	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2027	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2028	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2029	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2030	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2031	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2032	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2033
2034	blt::table configure $inner r* c* -resize none
2035	blt::table configure $inner r7 c4 -resize expand
2036	}
2037
2038	#
2039	# camera --
2040	#
2041	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2042	switch -- $option {
2043	"show" {
2044	puts [array get _view]
2045	}
2046	"set" {
2047	set what [lindex $args 0]
2048	set x $_view($what)
2049	set code [catch { string is double $x } result]
2050	if { $code != 0 \|\| !$result } {
2051	return
2052	}
2053	switch -- $what {
2054	"-ortho" {
2055	if {$_view($what)} {
2056	SendCmd "camera mode ortho"
2057	} else {
2058	SendCmd "camera mode persp"
2059	}
2060	}
2061	"-xpan" - "-ypan" {
2062	PanCamera
2063	}
2064	"-qx" - "-qy" - "-qz" - "-qw" {
2065	set q [ViewToQuaternion]
2066	$_arcball quaternion $q
2067	EventuallyRotate $q
2068	}
2069	"-zoom" {
2070	SendCmd "camera zoom $_view($what)"
2071	}
2072	}
2073	}
2074	}
2075	}
2076
2077	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2078	set bytes ""
2079	foreach dataobj [get] {
2080	foreach comp [$dataobj components] {
2081	set tag $dataobj-$comp
2082	set contents [$dataobj vtkdata $comp]
2083	append bytes "$contents\n"
2084	}
2085	}
2086	return [list .vtk $bytes]
2087	}
2088
2089	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2090	if { [image width $_image(download)] > 0 &&
2091	[image height $_image(download)] > 0 } {
2092	set bytes [$_image(download) data -format "jpeg -quality 100"]
2093	set bytes [Rappture::encoding::decode -as b64 $bytes]
2094	return [list .jpg $bytes]
2095	}
2096	return ""
2097	}
2098
2099	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2100	Rappture::Balloon $popup \
2101	-title "[Rappture::filexfer::label downloadWord] as..."
2102	set inner [$popup component inner]
2103	label $inner.summary -text "" -anchor w
2104	radiobutton $inner.vtk_button -text "VTK data file" \
2105	-variable [itcl::scope _downloadPopup(format)] \
2106	-font "Helvetica 9 " \
2107	-value vtk
2108	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2109	radiobutton $inner.image_button -text "Image File" \
2110	-variable [itcl::scope _downloadPopup(format)] \
2111	-value image
2112	Rappture::Tooltip::for $inner.image_button \
2113	"Save as digital image."
2114
2115	button $inner.ok -text "Save" \
2116	-highlightthickness 0 -pady 2 -padx 3 \
2117	-command $command \
2118	-compound left \
2119	-image [Rappture::icon download]
2120
2121	button $inner.cancel -text "Cancel" \
2122	-highlightthickness 0 -pady 2 -padx 3 \
2123	-command [list $popup deactivate] \
2124	-compound left \
2125	-image [Rappture::icon cancel]
2126
2127	blt::table $inner \
2128	0,0 $inner.summary -cspan 2 \
2129	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2130	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2131	4,1 $inner.cancel -width .9i -fill y \
2132	4,0 $inner.ok -padx 2 -width .9i -fill y
2133	blt::table configure $inner r3 -height 4
2134	blt::table configure $inner r4 -pady 4
2135	raise $inner.image_button
2136	$inner.vtk_button invoke
2137	return $inner
2138	}
2139
2140	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2141	# Parse style string.
2142	set tag $dataobj-$comp
2143	set style [$dataobj style $comp]
2144	array set settings {
2145	-color \#808080
2146	-edges 0
2147	-edgecolor black
2148	-linewidth 1.0
2149	-opacity 0.4
2150	-wireframe 0
2151	-lighting 1
2152	-seeds 1
2153	-seedcolor white
2154	-visible 1
2155	}
2156	if { $dataobj != $_first } {
2157	set settings(-opacity) 1
2158	}
2159	array set settings $style
2160	StartBufferingCommands
2161	SendCmd "streamlines add $tag"
2162	SendCmd "streamlines seed visible off $tag"
2163	set seeds [$dataobj hints seeds]
2164	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2165	set length [string length $seeds]
2166	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2167	append _outbuf $seeds
2168	set _seeds($dataobj) 1
2169	}
2170	SendCmd "cutplane add $tag"
2171	SendCmd "polydata add $tag"
2172	SendCmd "polydata colormode constant {} $tag"
2173	set _settings(volumeEdges) $settings(-edges)
2174	set _settings(volumeLighting) $settings(-lighting)
2175	set _settings(volumeOpacity) $settings(-opacity)
2176	set _settings(volumeWireframe) $settings(-wireframe)
2177	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2178	StopBufferingCommands
2179	SetColormap $dataobj $comp
2180	}
2181
2182	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2183	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2184	return 0
2185	}
2186	return 1
2187	}
2188
2189	# ----------------------------------------------------------------------
2190	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2191	#
2192	# Invoked automatically whenever the "legend" command comes in from
2193	# the rendering server. Indicates that binary image data with the
2194	# specified <size> will follow.
2195	# ----------------------------------------------------------------------
2196	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2197	set _legendPending 0
2198	set _title $title
2199	regsub {\(mag\)} $title "" _title
2200	if { [IsConnected] } {
2201	set bytes [ReceiveBytes $size]
2202	if { ![info exists _image(legend)] } {
2203	set _image(legend) [image create photo]
2204	}
2205	$_image(legend) configure -data $bytes
2206	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2207	if { [catch {DrawLegend} errs] != 0 } {
2208	puts stderr errs=$errs
2209	}
2210	}
2211	}
2212
2213	#
2214	# DrawLegend --
2215	#
2216	# Draws the legend in it's own canvas which resides to the right
2217	# of the contour plot area.
2218	#
2219	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2220	set fname $_curFldName
2221	set c $itk_component(view)
2222	set w [winfo width $c]
2223	set h [winfo height $c]
2224	set font "Arial 8"
2225	set lineht [font metrics $font -linespace]
2226
2227	if { [info exists _fields($fname)] } {
2228	foreach { title units } $_fields($fname) break
2229	if { $units != "" } {
2230	set title [format "%s (%s)" $title $units]
2231	}
2232	} else {
2233	set title $fname
2234	}
2235	if { $_settings(legendVisible) } {
2236	set x [expr $w - 2]
2237	if { [$c find withtag "legend"] == "" } {
2238	set y 2
2239	$c create text $x $y \
2240	-anchor ne \
2241	-fill $itk_option(-plotforeground) -tags "title legend" \
2242	-font $font
2243	incr y $lineht
2244	$c create text $x $y \
2245	-anchor ne \
2246	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2247	-font $font
2248	incr y $lineht
2249	$c create image $x $y \
2250	-anchor ne \
2251	-image $_image(legend) -tags "colormap legend"
2252	$c create text $x [expr {$h-2}] \
2253	-anchor se \
2254	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2255	-font $font
2256	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2257	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2258	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2259	}
2260	$c bind title <ButtonPress> [itcl::code $this Combo post]
2261	$c bind title <Enter> [itcl::code $this Combo activate]
2262	$c bind title <Leave> [itcl::code $this Combo deactivate]
2263	# Reset the item coordinates according the current size of the plot.
2264	$c itemconfigure title -text $title
2265	if { [info exists _limits($_curFldName)] } {
2266	foreach {vmin vmax} $_limits($_curFldName) break
2267	$c itemconfigure vmin -text [format %g $vmin]
2268	$c itemconfigure vmax -text [format %g $vmax]
2269	}
2270	set y 2
2271	$c coords title $x $y
2272	incr y $lineht
2273	$c coords vmax $x $y
2274	incr y $lineht
2275	$c coords colormap $x $y
2276	$c coords vmin $x [expr {$h - 2}]
2277	}
2278	}
2279
2280	#
2281	# EnterLegend --
2282	#
2283	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2284	SetLegendTip $x $y
2285	}
2286
2287	#
2288	# MotionLegend --
2289	#
2290	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2291	Rappture::Tooltip::tooltip cancel
2292	set c $itk_component(view)
2293	SetLegendTip $x $y
2294	}
2295
2296	#
2297	# LeaveLegend --
2298	#
2299	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2300	Rappture::Tooltip::tooltip cancel
2301	.rappturetooltip configure -icon ""
2302	}
2303
2304	#
2305	# SetLegendTip --
2306	#
2307	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2308	set c $itk_component(view)
2309	set w [winfo width $c]
2310	set h [winfo height $c]
2311	set font "Arial 8"
2312	set lineht [font metrics $font -linespace]
2313
2314	set imgHeight [image height $_image(legend)]
2315	set coords [$c coords colormap]
2316	set imgX [expr $w - [image width $_image(legend)] - 2]
2317	set imgY [expr $y - 2 * ($lineht + 2)]
2318
2319	if { [info exists _fields($_title)] } {
2320	foreach { title units } $_fields($_title) break
2321	if { $units != "" } {
2322	set title [format "%s (%s)" $title $units]
2323	}
2324	} else {
2325	set title $_title
2326	}
2327	# Make a swatch of the selected color
2328	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2329	#puts stderr "out of range: $imgY"
2330	return
2331	}
2332	if { ![info exists _image(swatch)] } {
2333	set _image(swatch) [image create photo -width 24 -height 24]
2334	}
2335	set color [eval format "\#%02x%02x%02x" $pixel]
2336	$_image(swatch) put black -to 0 0 23 23
2337	$_image(swatch) put $color -to 1 1 22 22
2338	.rappturetooltip configure -icon $_image(swatch)
2339
2340	# Compute the value of the point
2341	if { [info exists _limits($_curFldName)] } {
2342	foreach {vmin vmax} $_limits($_curFldName) break
2343	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2344	set value [expr $t * ($vmax - $vmin) + $vmin]
2345	} else {
2346	set value 0.0
2347	}
2348	set tipx [expr $x + 15]
2349	set tipy [expr $y - 5]
2350	Rappture::Tooltip::text $c "$title $value"
2351	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2352	}
2353
2354	# ----------------------------------------------------------------------
2355	# USAGE: Slice move x\|y\|z <newval>
2356	#
2357	# Called automatically when the user drags the slider to move the
2358	# cut plane that slices 3D data. Gets the current value from the
2359	# slider and moves the cut plane to the appropriate point in the
2360	# data set.
2361	# ----------------------------------------------------------------------
2362	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2363	switch -- $option {
2364	"move" {
2365	set axis [lindex $args 0]
2366	set newval [lindex $args 1]
2367	if {[llength $args] != 2} {
2368	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2369	}
2370	set newpos [expr {0.01*$newval}]
2371	SendCmd "cutplane slice $axis $newpos"
2372	}
2373	"tooltip" {
2374	set axis [lindex $args 0]
2375	set val [$itk_component(${axis}CutScale) get]
2376	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2377	}
2378	default {
2379	error "bad option \"$option\": should be axis, move, or tooltip"
2380	}
2381	}
2382	}
2383
2384	# ----------------------------------------------------------------------
2385	# USAGE: _dropdown post
2386	# USAGE: _dropdown unpost
2387	# USAGE: _dropdown select
2388	#
2389	# Used internally to handle the dropdown list for this combobox. The
2390	# post/unpost options are invoked when the list is posted or unposted
2391	# to manage the relief of the controlling button. The select option
2392	# is invoked whenever there is a selection from the list, to assign
2393	# the value back to the gauge.
2394	# ----------------------------------------------------------------------
2395	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2396	set c $itk_component(view)
2397	switch -- $option {
2398	post {
2399	foreach { x1 y1 x2 y2 } [$c bbox title] break
2400	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2401	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2402	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2403	tk_popup $itk_component(fieldmenu) $x $y
2404	}
2405	activate {
2406	$c itemconfigure title -fill red
2407	}
2408	deactivate {
2409	$c itemconfigure title -fill white
2410	}
2411	invoke {
2412	$itk_component(field) value $_curFldLabel
2413	AdjustSetting field
2414	}
2415	default {
2416	error "bad option \"$option\": should be post, unpost, select"
2417	}
2418	}
2419	}
2420
2421	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2422	array set positions {
2423	front "1 0 0 0"
2424	back "0 0 1 0"
2425	left "0.707107 0 -0.707107 0"
2426	right "0.707107 0 0.707107 0"
2427	top "0.707107 -0.707107 0 0"
2428	bottom "0.707107 0.707107 0 0"
2429	}
2430	foreach name { -qw -qx -qy -qz } value $positions($side) {
2431	set _view($name) $value
2432	}
2433	set q [ViewToQuaternion]
2434	$_arcball quaternion $q
2435	SendCmd "camera orient $q"
2436	SendCmd "camera reset"
2437	set _view(-xpan) 0
2438	set _view(-ypan) 0
2439	set _view(-zoom) 1.0
2440	}

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