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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 6142

Last change on this file since 6142 was 6142, checked in by ldelgass, 9 years ago
minor cleanups
File size: 84.0 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 { args } {
42	Rappture::VisViewer::constructor
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 }
69	private method BuildCutplaneTab {}
70	private method BuildDownloadPopup { widget command }
71	private method BuildStreamsTab {}
72	private method BuildSurfaceTab {}
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 SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method Slice {option args}
108	private method SetOrientation { side }
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115
116	private variable _dlist "" ; # list of data objects
117	private variable _obj2ovride ; # maps dataobj => style override
118	private variable _datasets ; # contains all the dataobj-component
119	; # datasets in the server
120	private variable _colormaps ; # contains all the colormaps
121	; # in the server.
122	private variable _currentColormap ""
123
124	private variable _click ; # info used for rotate operations
125	private variable _limits ; # autoscale min/max for all axes
126	private variable _view ; # view params for 3D view
127	private variable _settings
128	private variable _reset 1; # Connection to server has been reset.
129
130	private variable _first "" ; # This is the topmost dataset.
131	private variable _start 0
132	private variable _title ""
133	private variable _seeds
134	private variable _width 0
135	private variable _height 0
136	private variable _resizePending 0
137	private variable _reseedPending 0
138	private variable _rotatePending 0
139	private variable _cutplanePending 0
140	private variable _legendPending 0
141	private variable _fields
142	private variable _curFldName ""
143	private variable _curFldLabel ""
144	private variable _field ""
145	private variable _numSeeds 200
146	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
147
148	private common _downloadPopup; # download options from popup
149	private common _hardcopy
150	}
151
152	itk::usual VtkStreamlinesViewer {
153	keep -background -foreground -cursor -font
154	keep -plotbackground -plotforeground
155	}
156
157	# ----------------------------------------------------------------------
158	# CONSTRUCTOR
159	# ----------------------------------------------------------------------
160	itcl::body Rappture::VtkStreamlinesViewer::constructor {args} {
161	set _serverType "vtkvis"
162
163	EnableWaitDialog 2000
164
165	# Rebuild event
166	$_dispatcher register !rebuild
167	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
168
169	# Resize event
170	$_dispatcher register !resize
171	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
172
173	# Reseed event
174	$_dispatcher register !reseed
175	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
176
177	# Rotate event
178	$_dispatcher register !rotate
179	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
180
181	# Legend event
182	$_dispatcher register !legend
183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
184
185	# X-Cutplane event
186	$_dispatcher register !xcutplane
187	$_dispatcher dispatch $this !xcutplane \
188	"[itcl::code $this AdjustSetting -cutplanexposition]; list"
189
190	# Y-Cutplane event
191	$_dispatcher register !ycutplane
192	$_dispatcher dispatch $this !ycutplane \
193	"[itcl::code $this AdjustSetting -cutplaneyposition]; list"
194
195	# Z-Cutplane event
196	$_dispatcher register !zcutplane
197	$_dispatcher dispatch $this !zcutplane \
198	"[itcl::code $this AdjustSetting -cutplanezposition]; list"
199
200	#
201	# Populate parser with commands handle incoming requests
202	#
203	$_parser alias image [itcl::code $this ReceiveImage]
204	$_parser alias dataset [itcl::code $this ReceiveDataset]
205	$_parser alias legend [itcl::code $this ReceiveLegend]
206
207	# Initialize the view to some default parameters.
208	array set _view {
209	-ortho 0
210	-qw 0.853553
211	-qx -0.353553
212	-qy 0.353553
213	-qz 0.146447
214	-xpan 0
215	-ypan 0
216	-zoom 1.0
217	}
218	set _arcball [blt::arcball create 100 100]
219	$_arcball quaternion [ViewToQuaternion]
220
221	array set _settings [subst {
222	-axesvisible 1
223	-axislabelsvisible 1
224	-axisminorticks 1
225	-axismode "static"
226	-cutplaneedges 0
227	-cutplanelighting 1
228	-cutplaneopacity 100
229	-cutplanevisible 0
230	-cutplanewireframe 0
231	-cutplanexposition 50
232	-cutplanexvisible 1
233	-cutplaneyposition 50
234	-cutplaneyvisible 1
235	-cutplanezposition 50
236	-cutplanezvisible 1
237	-legendvisible 1
238	-streamlineslighting 1
239	-streamlinesmode lines
240	-streamlinesnumseeds 200
241	-streamlinesopacity 100
242	-streamlineslength 70
243	-streamlinesseedsvisible 0
244	-streamlinesvisible 1
245	-surfaceedges 0
246	-surfacelighting 1
247	-surfaceopacity 40
248	-surfacevisible 1
249	-surfacewireframe 0
250	-xgrid 0
251	-ygrid 0
252	-zgrid 0
253	}]
254
255	itk_component add view {
256	canvas $itk_component(plotarea).view \
257	-highlightthickness 0 -borderwidth 0
258	} {
259	usual
260	ignore -highlightthickness -borderwidth -background
261	}
262
263	itk_component add fieldmenu {
264	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
265	-tearoff no
266	} {
267	usual
268	ignore -background -foreground -relief -tearoff
269	}
270	set c $itk_component(view)
271	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
272	bind $c <4> [itcl::code $this Zoom in 0.25]
273	bind $c <5> [itcl::code $this Zoom out 0.25]
274	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
275	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
276	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
277	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
278	bind $c <Enter> "focus %W"
279	bind $c <Control-F1> [itcl::code $this ToggleConsole]
280
281	# Fix the scrollregion in case we go off screen
282	$c configure -scrollregion [$c bbox all]
283
284	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
285	set _map(cwidth) -1
286	set _map(cheight) -1
287	set _map(zoom) 1.0
288	set _map(original) ""
289
290	set f [$itk_component(main) component controls]
291	itk_component add reset {
292	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
293	-highlightthickness 0 \
294	-image [Rappture::icon reset-view] \
295	-command [itcl::code $this Zoom reset]
296	} {
297	usual
298	ignore -highlightthickness
299	}
300	pack $itk_component(reset) -side top -padx 2 -pady 2
301	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
302
303	itk_component add zoomin {
304	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
305	-highlightthickness 0 \
306	-image [Rappture::icon zoom-in] \
307	-command [itcl::code $this Zoom in]
308	} {
309	usual
310	ignore -highlightthickness
311	}
312	pack $itk_component(zoomin) -side top -padx 2 -pady 2
313	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
314
315	itk_component add zoomout {
316	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
317	-highlightthickness 0 \
318	-image [Rappture::icon zoom-out] \
319	-command [itcl::code $this Zoom out]
320	} {
321	usual
322	ignore -highlightthickness
323	}
324	pack $itk_component(zoomout) -side top -padx 2 -pady 2
325	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
326
327	itk_component add surface {
328	Rappture::PushButton $f.surface \
329	-onimage [Rappture::icon volume-on] \
330	-offimage [Rappture::icon volume-off] \
331	-variable [itcl::scope _settings(-surfacevisible)] \
332	-command [itcl::code $this AdjustSetting -surfacevisible]
333	}
334	$itk_component(surface) select
335	Rappture::Tooltip::for $itk_component(surface) \
336	"Show/Hide the boundary surface"
337	pack $itk_component(surface) -padx 2 -pady 2
338
339	itk_component add streamlines {
340	Rappture::PushButton $f.streamlines \
341	-onimage [Rappture::icon streamlines-on] \
342	-offimage [Rappture::icon streamlines-off] \
343	-variable [itcl::scope _settings(-streamlinesvisible)] \
344	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
345	}
346	$itk_component(streamlines) select
347	Rappture::Tooltip::for $itk_component(streamlines) \
348	"Show/Hide the streamlines"
349	pack $itk_component(streamlines) -padx 2 -pady 2
350
351	itk_component add cutplane {
352	Rappture::PushButton $f.cutplane \
353	-onimage [Rappture::icon cutbutton] \
354	-offimage [Rappture::icon cutbutton] \
355	-variable [itcl::scope _settings(-cutplanevisible)] \
356	-command [itcl::code $this AdjustSetting -cutplanevisible]
357	}
358	Rappture::Tooltip::for $itk_component(cutplane) \
359	"Show/Hide the cutplanes"
360	pack $itk_component(cutplane) -padx 2 -pady 2
361
362	if { [catch {
363	BuildSurfaceTab
364	BuildStreamsTab
365	BuildCutplaneTab
366	BuildAxisTab
367	BuildCameraTab
368	} errs] != 0 } {
369	puts stderr errs=$errs
370	}
371	# Legend
372
373	set _image(legend) [image create photo]
374	itk_component add legend {
375	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
376	} {
377	usual
378	ignore -highlightthickness
379	rename -background -plotbackground plotBackground Background
380	}
381
382	# Hack around the Tk panewindow. The problem is that the requested
383	# size of the 3d view isn't set until an image is retrieved from
384	# the server. So the panewindow uses the tiny size.
385	set w 10000
386	pack forget $itk_component(view)
387	blt::table $itk_component(plotarea) \
388	0,0 $itk_component(view) -fill both -reqwidth $w
389	blt::table configure $itk_component(plotarea) c1 -resize none
390
391	# Bindings for rotation via mouse
392	bind $itk_component(view) <ButtonPress-1> \
393	[itcl::code $this Rotate click %x %y]
394	bind $itk_component(view) <B1-Motion> \
395	[itcl::code $this Rotate drag %x %y]
396	bind $itk_component(view) <ButtonRelease-1> \
397	[itcl::code $this Rotate release %x %y]
398
399	# Bindings for panning via mouse
400	bind $itk_component(view) <ButtonPress-2> \
401	[itcl::code $this Pan click %x %y]
402	bind $itk_component(view) <B2-Motion> \
403	[itcl::code $this Pan drag %x %y]
404	bind $itk_component(view) <ButtonRelease-2> \
405	[itcl::code $this Pan release %x %y]
406
407	#bind $itk_component(view) <ButtonRelease-3> \
408	# [itcl::code $this Pick %x %y]
409
410	# Bindings for panning via keyboard
411	bind $itk_component(view) <KeyPress-Left> \
412	[itcl::code $this Pan set -10 0]
413	bind $itk_component(view) <KeyPress-Right> \
414	[itcl::code $this Pan set 10 0]
415	bind $itk_component(view) <KeyPress-Up> \
416	[itcl::code $this Pan set 0 -10]
417	bind $itk_component(view) <KeyPress-Down> \
418	[itcl::code $this Pan set 0 10]
419	bind $itk_component(view) <Shift-KeyPress-Left> \
420	[itcl::code $this Pan set -2 0]
421	bind $itk_component(view) <Shift-KeyPress-Right> \
422	[itcl::code $this Pan set 2 0]
423	bind $itk_component(view) <Shift-KeyPress-Up> \
424	[itcl::code $this Pan set 0 -2]
425	bind $itk_component(view) <Shift-KeyPress-Down> \
426	[itcl::code $this Pan set 0 2]
427
428	# Bindings for zoom via keyboard
429	bind $itk_component(view) <KeyPress-Prior> \
430	[itcl::code $this Zoom out]
431	bind $itk_component(view) <KeyPress-Next> \
432	[itcl::code $this Zoom in]
433
434	bind $itk_component(view) <Enter> "focus $itk_component(view)"
435
436	if {[string equal "x11" [tk windowingsystem]]} {
437	# Bindings for zoom via mouse
438	bind $itk_component(view) <4> [itcl::code $this Zoom out]
439	bind $itk_component(view) <5> [itcl::code $this Zoom in]
440	}
441
442	set _image(download) [image create photo]
443
444	eval itk_initialize $args
445	Connect
446	}
447
448	# ----------------------------------------------------------------------
449	# DESTRUCTOR
450	# ----------------------------------------------------------------------
451	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
452	Disconnect
453	image delete $_image(plot)
454	image delete $_image(download)
455	catch { blt::arcball destroy $_arcball }
456	}
457
458	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
459	if { $_width < 2 } {
460	set _width 500
461	}
462	if { $_height < 2 } {
463	set _height 500
464	}
465	set _start [clock clicks -milliseconds]
466	SendCmd "screen size $_width $_height"
467
468	set _legendPending 1
469	set _resizePending 0
470	}
471
472	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
473	SendCmd "camera orient [ViewToQuaternion]"
474	set _rotatePending 0
475	}
476
477	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
478	foreach dataset [CurrentDatasets -visible] {
479	foreach {dataobj comp} [split $dataset -] break
480	# This command works for either random or fmesh seeds
481	SendCmd "streamlines seed numpts $_numSeeds $dataset"
482	}
483	set _reseedPending 0
484	}
485
486	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
487	set _width $w
488	set _height $h
489	$_arcball resize $w $h
490	if { !$_resizePending } {
491	set _resizePending 1
492	$_dispatcher event -after 400 !resize
493	}
494	}
495
496	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
497	set _numSeeds $numPoints
498	if { !$_reseedPending } {
499	set _reseedPending 1
500	$_dispatcher event -after 600 !reseed
501	}
502	}
503
504	set rotate_delay 100
505
506	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
507	QuaternionToView $q
508	if { !$_rotatePending } {
509	set _rotatePending 1
510	global rotate_delay
511	$_dispatcher event -after $rotate_delay !rotate
512	}
513	}
514
515	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
516	if { !$_cutplanePending } {
517	set _cutplanePending 1
518	$_dispatcher event -after 100 !${axis}cutplane
519	}
520	}
521
522	# ----------------------------------------------------------------------
523	# USAGE: add <dataobj> ?<settings>?
524	#
525	# Clients use this to add a data object to the plot. The optional
526	# <settings> are used to configure the plot. Allowed settings are
527	# -color, -brightness, -width, -linestyle, and -raise.
528	# ----------------------------------------------------------------------
529	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
530	array set params {
531	-color auto
532	-width 1
533	-linestyle solid
534	-brightness 0
535	-raise 0
536	-description ""
537	-param ""
538	-type ""
539	}
540	array set params $settings
541	set params(-description) ""
542	set params(-param) ""
543	array set params $settings
544
545	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
546	# can't handle -autocolors yet
547	set params(-color) black
548	}
549	set pos [lsearch -exact $_dlist $dataobj]
550	if {$pos < 0} {
551	lappend _dlist $dataobj
552	}
553	set _obj2ovride($dataobj-color) $params(-color)
554	set _obj2ovride($dataobj-width) $params(-width)
555	set _obj2ovride($dataobj-raise) $params(-raise)
556	$_dispatcher event -idle !rebuild
557	}
558
559
560	# ----------------------------------------------------------------------
561	# USAGE: delete ?<dataobj1> <dataobj2> ...?
562	#
563	# Clients use this to delete a dataobj from the plot. If no dataobjs
564	# are specified, then all dataobjs are deleted. No data objects are
565	# deleted. They are only removed from the display list.
566	# ----------------------------------------------------------------------
567	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
568	if { [llength $args] == 0} {
569	set args $_dlist
570	}
571	# Delete all specified dataobjs
572	set changed 0
573	foreach dataobj $args {
574	set pos [lsearch -exact $_dlist $dataobj]
575	if { $pos < 0 } {
576	continue; # Don't know anything about it.
577	}
578	# Remove it from the dataobj list.
579	set _dlist [lreplace $_dlist $pos $pos]
580	array unset _obj2ovride $dataobj-*
581	array unset _settings $dataobj-*
582	set changed 1
583	}
584	# If anything changed, then rebuild the plot
585	if { $changed } {
586	$_dispatcher event -idle !rebuild
587	}
588	}
589
590	# ----------------------------------------------------------------------
591	# USAGE: get ?-objects?
592	# USAGE: get ?-visible?
593	# USAGE: get ?-image view?
594	#
595	# Clients use this to query the list of objects being plotted, in
596	# order from bottom to top of this result. The optional "-image"
597	# flag can also request the internal images being shown.
598	# ----------------------------------------------------------------------
599	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
600	if {[llength $args] == 0} {
601	set args "-objects"
602	}
603
604	set op [lindex $args 0]
605	switch -- $op {
606	"-objects" {
607	# put the dataobj list in order according to -raise options
608	set dlist {}
609	foreach dataobj $_dlist {
610	if { ![IsValidObject $dataobj] } {
611	continue
612	}
613	if {[info exists _obj2ovride($dataobj-raise)] &&
614	$_obj2ovride($dataobj-raise)} {
615	set dlist [linsert $dlist 0 $dataobj]
616	} else {
617	lappend dlist $dataobj
618	}
619	}
620	return $dlist
621	}
622	"-visible" {
623	set dlist {}
624	foreach dataobj $_dlist {
625	if { ![IsValidObject $dataobj] } {
626	continue
627	}
628	if { ![info exists _obj2ovride($dataobj-raise)] } {
629	# No setting indicates that the object isn't visible.
630	continue
631	}
632	# Otherwise use the -raise parameter to put the object to
633	# the front of the list.
634	if { $_obj2ovride($dataobj-raise) } {
635	set dlist [linsert $dlist 0 $dataobj]
636	} else {
637	lappend dlist $dataobj
638	}
639	}
640	return $dlist
641	}
642	-image {
643	if {[llength $args] != 2} {
644	error "wrong # args: should be \"get -image view\""
645	}
646	switch -- [lindex $args end] {
647	view {
648	return $_image(plot)
649	}
650	default {
651	error "bad image name \"[lindex $args end]\": should be view"
652	}
653	}
654	}
655	default {
656	error "bad option \"$op\": should be -objects or -image"
657	}
658	}
659	}
660
661	# ----------------------------------------------------------------------
662	# USAGE: scale ?<data1> <data2> ...?
663	#
664	# Sets the default limits for the overall plot according to the
665	# limits of the data for all of the given <data> objects. This
666	# accounts for all objects--even those not showing on the screen.
667	# Because of this, the limits are appropriate for all objects as
668	# the user scans through data in the ResultSet viewer.
669	# ----------------------------------------------------------------------
670	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
671	foreach dataobj $args {
672	foreach axis { x y z } {
673	set lim [$dataobj limits $axis]
674	if { ![info exists _limits($axis)] } {
675	set _limits($axis) $lim
676	continue
677	}
678	foreach {min max} $lim break
679	foreach {amin amax} $_limits($axis) break
680	if { $amin > $min } {
681	set amin $min
682	}
683	if { $amax < $max } {
684	set amax $max
685	}
686	set _limits($axis) [list $amin $amax]
687	}
688	foreach { fname lim } [$dataobj fieldlimits] {
689	if { ![info exists _limits($fname)] } {
690	set _limits($fname) $lim
691	continue
692	}
693	foreach {min max} $lim break
694	foreach {fmin fmax} $_limits($fname) break
695	if { $fmin > $min } {
696	set fmin $min
697	}
698	if { $fmax < $max } {
699	set fmax $max
700	}
701	set _limits($fname) [list $fmin $fmax]
702	}
703	}
704	}
705
706	# ----------------------------------------------------------------------
707	# USAGE: download coming
708	# USAGE: download controls <downloadCommand>
709	# USAGE: download now
710	#
711	# Clients use this method to create a downloadable representation
712	# of the plot. Returns a list of the form {ext string}, where
713	# "ext" is the file extension (indicating the type of data) and
714	# "string" is the data itself.
715	# ----------------------------------------------------------------------
716	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
717	switch $option {
718	coming {
719	if {[catch {
720	blt::winop snap $itk_component(plotarea) $_image(download)
721	}]} {
722	$_image(download) configure -width 1 -height 1
723	$_image(download) put #000000
724	}
725	}
726	controls {
727	set popup .vtkviewerdownload
728	if { ![winfo exists .vtkviewerdownload] } {
729	set inner [BuildDownloadPopup $popup [lindex $args 0]]
730	} else {
731	set inner [$popup component inner]
732	}
733	set _downloadPopup(image_controls) $inner.image_frame
734	set num [llength [get]]
735	set num [expr {($num == 1) ? "1 result" : "$num results"}]
736	set word [Rappture::filexfer::label downloadWord]
737	$inner.summary configure -text "$word $num in the following format:"
738	update idletasks ;# Fix initial sizes
739	return $popup
740	}
741	now {
742	set popup .vtkviewerdownload
743	if {[winfo exists .vtkviewerdownload]} {
744	$popup deactivate
745	}
746	switch -- $_downloadPopup(format) {
747	"image" {
748	return [$this GetImage [lindex $args 0]]
749	}
750	"vtk" {
751	return [$this GetVtkData [lindex $args 0]]
752	}
753	}
754	return ""
755	}
756	default {
757	error "bad option \"$option\": should be coming, controls, now"
758	}
759	}
760	}
761
762	# ----------------------------------------------------------------------
763	# USAGE: Connect ?<host:port>,<host:port>...?
764	#
765	# Clients use this method to establish a connection to a new
766	# server, or to reestablish a connection to the previous server.
767	# Any existing connection is automatically closed.
768	# ----------------------------------------------------------------------
769	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
770	set _hosts [GetServerList "vtkvis"]
771	if { "" == $_hosts } {
772	return 0
773	}
774	set _reset 1
775	set result [VisViewer::Connect $_hosts]
776	if { $result } {
777	if { $_reportClientInfo } {
778	# Tell the server the viewer, hub, user and session.
779	# Do this immediately on connect before buffering any commands
780	global env
781
782	set info {}
783	set user "???"
784	if { [info exists env(USER)] } {
785	set user $env(USER)
786	}
787	set session "???"
788	if { [info exists env(SESSION)] } {
789	set session $env(SESSION)
790	}
791	lappend info "version" "$Rappture::version"
792	lappend info "build" "$Rappture::build"
793	lappend info "svnurl" "$Rappture::svnurl"
794	lappend info "installdir" "$Rappture::installdir"
795	lappend info "hub" [exec hostname]
796	lappend info "client" "vtkstreamlinesviewer"
797	lappend info "user" $user
798	lappend info "session" $session
799	SendCmd "clientinfo [list $info]"
800	}
801
802	set w [winfo width $itk_component(view)]
803	set h [winfo height $itk_component(view)]
804	EventuallyResize $w $h
805	}
806	return $result
807	}
808
809	#
810	# isconnected --
811	#
812	# Indicates if we are currently connected to the visualization server.
813	#
814	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
815	return [VisViewer::IsConnected]
816	}
817
818	#
819	# disconnect --
820	#
821	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
822	Disconnect
823	set _reset 1
824	}
825
826	#
827	# Disconnect --
828	#
829	# Clients use this method to disconnect from the current rendering
830	# server.
831	#
832	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
833	VisViewer::Disconnect
834
835	$_dispatcher cancel !rebuild
836	$_dispatcher cancel !resize
837	$_dispatcher cancel !reseed
838	$_dispatcher cancel !rotate
839	$_dispatcher cancel !xcutplane
840	$_dispatcher cancel !ycutplane
841	$_dispatcher cancel !zcutplane
842	$_dispatcher cancel !legend
843	# disconnected -- no more data sitting on server
844	array unset _datasets
845	array unset _colormaps
846	array unset _seeds
847	}
848
849	# ----------------------------------------------------------------------
850	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
851	#
852	# Invoked automatically whenever the "image" command comes in from
853	# the rendering server. Indicates that binary image data with the
854	# specified <size> will follow.
855	# ----------------------------------------------------------------------
856	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
857	array set info {
858	-token "???"
859	-bytes 0
860	-type image
861	}
862	array set info $args
863	set bytes [ReceiveBytes $info(-bytes)]
864	if { $info(-type) == "image" } {
865	if 0 {
866	set f [open "last.ppm" "w"]
867	fconfigure $f -encoding binary
868	puts -nonewline $f $bytes
869	close $f
870	}
871	$_image(plot) configure -data $bytes
872	set time [clock seconds]
873	set date [clock format $time]
874	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
875	if { $_start > 0 } {
876	set finish [clock clicks -milliseconds]
877	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
878	set _start 0
879	}
880	} elseif { $info(type) == "print" } {
881	set tag $this-print-$info(-token)
882	set _hardcopy($tag) $bytes
883	}
884	if { $_legendPending } {
885	RequestLegend
886	}
887	}
888
889	#
890	# ReceiveDataset --
891	#
892	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
893	if { ![isconnected] } {
894	return
895	}
896	set option [lindex $args 0]
897	switch -- $option {
898	"scalar" {
899	set option [lindex $args 1]
900	switch -- $option {
901	"world" {
902	foreach { x y z value tag } [lrange $args 2 end] break
903	}
904	"pixel" {
905	foreach { x y value tag } [lrange $args 2 end] break
906	}
907	}
908	}
909	"vector" {
910	set option [lindex $args 1]
911	switch -- $option {
912	"world" {
913	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
914	}
915	"pixel" {
916	foreach { x y vx vy vz tag } [lrange $args 2 end] break
917	}
918	}
919	}
920	"names" {
921	foreach { name } [lindex $args 1] {
922	#puts stderr "Dataset: $name"
923	}
924	}
925	default {
926	error "unknown dataset option \"$option\" from server"
927	}
928	}
929	}
930
931	# ----------------------------------------------------------------------
932	# USAGE: Rebuild
933	#
934	# Called automatically whenever something changes that affects the
935	# data in the widget. Clears any existing data and rebuilds the
936	# widget to display new data.
937	# ----------------------------------------------------------------------
938	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
939	set w [winfo width $itk_component(view)]
940	set h [winfo height $itk_component(view)]
941	if { $w < 2 \|\| $h < 2 } {
942	update
943	$_dispatcher event -idle !rebuild
944	return
945	}
946
947	# Turn on buffering of commands to the server. We don't want to
948	# be preempted by a server disconnect/reconnect (which automatically
949	# generates a new call to Rebuild).
950	StartBufferingCommands
951	set _legendPending 1
952
953	set _first ""
954	if { $_reset } {
955	set _width $w
956	set _height $h
957	$_arcball resize $w $h
958	DoResize
959	InitSettings -xgrid -ygrid -zgrid -axismode \
960	-axesvisible -axislabelsvisible -axisminorticks
961	# This "imgflush" is to force an image returned before vtkvis starts
962	# reading a (big) dataset. This will display an empty plot with axes
963	# at the correct image size.
964	SendCmd "imgflush"
965	}
966
967	set _first ""
968	SendCmd "dataset visible 0"
969	foreach dataobj [get -objects] {
970	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
971	set _first $dataobj
972	}
973	foreach comp [$dataobj components] {
974	set tag $dataobj-$comp
975	if { ![info exists _datasets($tag)] } {
976	set bytes [$dataobj vtkdata $comp]
977	set length [string length $bytes]
978	if 0 {
979	set f [open /tmp/vtkstreamlines.vtk "w"]
980	fconfigure $f -translation binary -encoding binary
981	puts -nonewline $f $bytes
982	close $f
983	}
984	if { $_reportClientInfo } {
985	set info {}
986	lappend info "tool_id" [$dataobj hints toolid]
987	lappend info "tool_name" [$dataobj hints toolname]
988	lappend info "tool_title" [$dataobj hints tooltitle]
989	lappend info "tool_command" [$dataobj hints toolcommand]
990	lappend info "tool_revision" [$dataobj hints toolrevision]
991	lappend info "dataset_label" [$dataobj hints label]
992	lappend info "dataset_size" $length
993	lappend info "dataset_tag" $tag
994	SendCmd "clientinfo [list $info]"
995	}
996	SendCmd "dataset add $tag data follows $length"
997	SendData $bytes
998	set _datasets($tag) 1
999	SetObjectStyle $dataobj $comp
1000	}
1001	if { [info exists _obj2ovride($dataobj-raise)] } {
1002	SendCmd "dataset visible 1 $tag"
1003	}
1004	}
1005	}
1006	if {"" != $_first} {
1007	foreach axis { x y z } {
1008	set label [$_first hints ${axis}label]
1009	if { $label != "" } {
1010	SendCmd [list axis name $axis $label]
1011	}
1012	set units [$_first hints ${axis}units]
1013	if { $units != "" } {
1014	SendCmd [list axis units $axis $units]
1015	}
1016	}
1017	$itk_component(field) choices delete 0 end
1018	$itk_component(fieldmenu) delete 0 end
1019	array unset _fields
1020	set _curFldName ""
1021	set _curFldLabel ""
1022	foreach cname [$_first components] {
1023	foreach fname [$_first fieldnames $cname] {
1024	if { [info exists _fields($fname)] } {
1025	continue
1026	}
1027	foreach { label units components } \
1028	[$_first fieldinfo $fname] break
1029	$itk_component(field) choices insert end "$fname" "$label"
1030	$itk_component(fieldmenu) add radiobutton -label "$label" \
1031	-value $label -variable [itcl::scope _curFldLabel] \
1032	-selectcolor red \
1033	-activebackground $itk_option(-plotbackground) \
1034	-activeforeground $itk_option(-plotforeground) \
1035	-font "Arial 8" \
1036	-command [itcl::code $this Combo invoke]
1037	set _fields($fname) [list $label $units $components]
1038	if { $_curFldName == "" && $components == 3 } {
1039	set _curFldName $fname
1040	set _curFldLabel $label
1041	}
1042	}
1043	}
1044	$itk_component(field) value $_curFldLabel
1045	}
1046
1047	if { $_reset } {
1048	InitSettings -streamlinesseedsvisible -streamlinesopacity \
1049	-streamlinesvisible \
1050	-streamlineslighting \
1051	-streamlinescolormap -field \
1052	-surfacevisible -surfaceedges -surfacelighting -surfaceopacity \
1053	-surfacewireframe \
1054	-cutplanevisible \
1055	-cutplanexposition -cutplaneyposition -cutplanezposition \
1056	-cutplanexvisible -cutplaneyvisible -cutplanezvisible
1057
1058	# Reset the camera and other view parameters
1059	$_arcball quaternion [ViewToQuaternion]
1060	if {$_view(-ortho)} {
1061	SendCmd "camera mode ortho"
1062	} else {
1063	SendCmd "camera mode persp"
1064	}
1065	DoRotate
1066	PanCamera
1067	Zoom reset
1068	SendCmd "camera reset"
1069	set _reset 0
1070	}
1071	# Actually write the commands to the server socket. If it fails, we don't
1072	# care. We're finished here.
1073	blt::busy hold $itk_component(hull)
1074	StopBufferingCommands
1075	blt::busy release $itk_component(hull)
1076	}
1077
1078	# ----------------------------------------------------------------------
1079	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1080	#
1081	# Returns a list of server IDs for the current datasets being displayed. This
1082	# is normally a single ID, but it might be a list of IDs if the current data
1083	# object has multiple components.
1084	# ----------------------------------------------------------------------
1085	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1086	set flag [lindex $args 0]
1087	switch -- $flag {
1088	"-all" {
1089	if { [llength $args] > 1 } {
1090	error "CurrentDatasets: can't specify dataobj after \"-all\""
1091	}
1092	set dlist [get -objects]
1093	}
1094	"-visible" {
1095	if { [llength $args] > 1 } {
1096	set dlist {}
1097	set args [lrange $args 1 end]
1098	foreach dataobj $args {
1099	if { [info exists _obj2ovride($dataobj-raise)] } {
1100	lappend dlist $dataobj
1101	}
1102	}
1103	} else {
1104	set dlist [get -visible]
1105	}
1106	}
1107	default {
1108	set dlist $args
1109	}
1110	}
1111	set rlist ""
1112	foreach dataobj $dlist {
1113	foreach comp [$dataobj components] {
1114	set tag $dataobj-$comp
1115	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1116	lappend rlist $tag
1117	}
1118	}
1119	}
1120	return $rlist
1121	}
1122
1123	# ----------------------------------------------------------------------
1124	# USAGE: Zoom in
1125	# USAGE: Zoom out
1126	# USAGE: Zoom reset
1127	#
1128	# Called automatically when the user clicks on one of the zoom
1129	# controls for this widget. Changes the zoom for the current view.
1130	# ----------------------------------------------------------------------
1131	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1132	switch -- $option {
1133	"in" {
1134	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1135	SendCmd "camera zoom $_view(-zoom)"
1136	}
1137	"out" {
1138	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1139	SendCmd "camera zoom $_view(-zoom)"
1140	}
1141	"reset" {
1142	array set _view {
1143	-qw 0.853553
1144	-qx -0.353553
1145	-qy 0.353553
1146	-qz 0.146447
1147	-xpan 0
1148	-ypan 0
1149	-zoom 1.0
1150	}
1151	if { $_first != "" } {
1152	set location [$_first hints camera]
1153	if { $location != "" } {
1154	array set _view $location
1155	}
1156	}
1157	$_arcball quaternion [ViewToQuaternion]
1158	DoRotate
1159	SendCmd "camera reset"
1160	}
1161	}
1162	}
1163
1164	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1165	set x $_view(-xpan)
1166	set y $_view(-ypan)
1167	SendCmd "camera pan $x $y"
1168	}
1169
1170	# ----------------------------------------------------------------------
1171	# USAGE: Rotate click <x> <y>
1172	# USAGE: Rotate drag <x> <y>
1173	# USAGE: Rotate release <x> <y>
1174	#
1175	# Called automatically when the user clicks/drags/releases in the
1176	# plot area. Moves the plot according to the user's actions.
1177	# ----------------------------------------------------------------------
1178	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1179	switch -- $option {
1180	"click" {
1181	$itk_component(view) configure -cursor fleur
1182	set _click(x) $x
1183	set _click(y) $y
1184	}
1185	"drag" {
1186	if {[array size _click] == 0} {
1187	Rotate click $x $y
1188	} else {
1189	set w [winfo width $itk_component(view)]
1190	set h [winfo height $itk_component(view)]
1191	if {$w <= 0 \|\| $h <= 0} {
1192	return
1193	}
1194
1195	if {[catch {
1196	# this fails sometimes for no apparent reason
1197	set dx [expr {double($x-$_click(x))/$w}]
1198	set dy [expr {double($y-$_click(y))/$h}]
1199	}]} {
1200	return
1201	}
1202	if { $dx == 0 && $dy == 0 } {
1203	return
1204	}
1205	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1206	EventuallyRotate $q
1207	set _click(x) $x
1208	set _click(y) $y
1209	}
1210	}
1211	"release" {
1212	Rotate drag $x $y
1213	$itk_component(view) configure -cursor ""
1214	catch {unset _click}
1215	}
1216	default {
1217	error "bad option \"$option\": should be click, drag, release"
1218	}
1219	}
1220	}
1221
1222	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1223	foreach tag [CurrentDatasets -visible] {
1224	SendCmd "dataset getscalar pixel $x $y $tag"
1225	}
1226	}
1227
1228	# ----------------------------------------------------------------------
1229	# USAGE: $this Pan click x y
1230	# $this Pan drag x y
1231	# $this Pan release x y
1232	#
1233	# Called automatically when the user clicks on one of the zoom
1234	# controls for this widget. Changes the zoom for the current view.
1235	# ----------------------------------------------------------------------
1236	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1237	switch -- $option {
1238	"set" {
1239	set w [winfo width $itk_component(view)]
1240	set h [winfo height $itk_component(view)]
1241	set x [expr $x / double($w)]
1242	set y [expr $y / double($h)]
1243	set _view(-xpan) [expr $_view(-xpan) + $x]
1244	set _view(-ypan) [expr $_view(-ypan) + $y]
1245	PanCamera
1246	return
1247	}
1248	"click" {
1249	set _click(x) $x
1250	set _click(y) $y
1251	$itk_component(view) configure -cursor hand1
1252	}
1253	"drag" {
1254	if { ![info exists _click(x)] } {
1255	set _click(x) $x
1256	}
1257	if { ![info exists _click(y)] } {
1258	set _click(y) $y
1259	}
1260	set w [winfo width $itk_component(view)]
1261	set h [winfo height $itk_component(view)]
1262	set dx [expr ($_click(x) - $x)/double($w)]
1263	set dy [expr ($_click(y) - $y)/double($h)]
1264	set _click(x) $x
1265	set _click(y) $y
1266	set _view(-xpan) [expr $_view(-xpan) - $dx]
1267	set _view(-ypan) [expr $_view(-ypan) - $dy]
1268	PanCamera
1269	}
1270	"release" {
1271	Pan drag $x $y
1272	$itk_component(view) configure -cursor ""
1273	}
1274	default {
1275	error "unknown option \"$option\": should set, click, drag, or release"
1276	}
1277	}
1278	}
1279
1280	# ----------------------------------------------------------------------
1281	# USAGE: InitSettings <what> ?<value>?
1282	#
1283	# Used internally to update rendering settings whenever parameters
1284	# change in the popup settings panel. Sends the new settings off
1285	# to the back end.
1286	# ----------------------------------------------------------------------
1287	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1288	foreach spec $args {
1289	if { [info exists _settings($_first${spec})] } {
1290	# Reset global setting with dataobj specific setting
1291	set _settings($spec) $_settings($_first${spec})
1292	}
1293	AdjustSetting $spec
1294	}
1295	}
1296
1297	#
1298	# AdjustSetting --
1299	#
1300	# Changes/updates a specific setting in the widget. There are
1301	# usually user-setable option. Commands are sent to the render
1302	# server.
1303	#
1304	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1305	if { ![isconnected] } {
1306	return
1307	}
1308	switch -- $what {
1309	"-axesvisible" {
1310	set bool $_settings($what)
1311	SendCmd "axis visible all $bool"
1312	}
1313	"-axislabelsvisible" {
1314	set bool $_settings($what)
1315	SendCmd "axis labels all $bool"
1316	}
1317	"-axisminorticks" {
1318	set bool $_settings($what)
1319	SendCmd "axis minticks all $bool"
1320	}
1321	"-axismode" {
1322	set mode [$itk_component(axismode) value]
1323	set mode [$itk_component(axismode) translate $mode]
1324	set _settings($what) $mode
1325	SendCmd "axis flymode $mode"
1326	}
1327	"-cutplaneedges" {
1328	set bool $_settings($what)
1329	SendCmd "cutplane edges $bool"
1330	}
1331	"-cutplanevisible" {
1332	set bool $_settings($what)
1333	SendCmd "cutplane visible $bool"
1334	if { $bool } {
1335	Rappture::Tooltip::for $itk_component(cutplane) \
1336	"Hide the cutplanes"
1337	} else {
1338	Rappture::Tooltip::for $itk_component(cutplane) \
1339	"Show the cutplanes"
1340	}
1341	}
1342	"-cutplanewireframe" {
1343	set bool $_settings($what)
1344	SendCmd "cutplane wireframe $bool"
1345	}
1346	"-cutplanelighting" {
1347	set bool $_settings($what)
1348	SendCmd "cutplane lighting $bool"
1349	}
1350	"-cutplaneopacity" {
1351	set val $_settings($what)
1352	set sval [expr { 0.01 * double($val) }]
1353	SendCmd "cutplane opacity $sval"
1354	}
1355	"-cutplanexvisible" - "-cutplaneyvisible" - "-cutplanezvisible" {
1356	set axis [string range $what 9 9]
1357	set bool $_settings($what)
1358	if { $bool } {
1359	$itk_component(${axis}CutScale) configure -state normal \
1360	-troughcolor white
1361	} else {
1362	$itk_component(${axis}CutScale) configure -state disabled \
1363	-troughcolor grey82
1364	}
1365	SendCmd "cutplane axis $axis $bool"
1366	}
1367	"-cutplanexposition" - "-cutplaneyposition" - "-cutplanezposition" {
1368	set axis [string range $what 9 9]
1369	set pos [expr $_settings($what) * 0.01]
1370	SendCmd "cutplane slice ${axis} ${pos}"
1371	set _cutplanePending 0
1372	}
1373	"-field" {
1374	set label [$itk_component(field) value]
1375	set fname [$itk_component(field) translate $label]
1376	set _settings($what) $fname
1377	if { [info exists _fields($fname)] } {
1378	foreach { label units components } $_fields($fname) break
1379	if { $components > 1 } {
1380	set _colorMode vmag
1381	} else {
1382	set _colorMode scalar
1383	}
1384	set _curFldName $fname
1385	set _curFldLabel $label
1386	} else {
1387	puts stderr "unknown field \"$fname\""
1388	return
1389	}
1390	# Get the new limits because the field changed.
1391	if { ![info exists _limits($_curFldName)] } {
1392	SendCmd "dataset maprange all"
1393	} else {
1394	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1395	}
1396	SendCmd "streamlines colormode $_colorMode $_curFldName"
1397	SendCmd "cutplane colormode $_colorMode $_curFldName"
1398	DrawLegend
1399	}
1400	"-streamlinesseedsvisible" {
1401	set bool $_settings($what)
1402	SendCmd "streamlines seed visible $bool"
1403	}
1404	"-streamlinesnumseeds" {
1405	set density $_settings($what)
1406	EventuallyReseed $density
1407	}
1408	"-streamlinesvisible" {
1409	set bool $_settings($what)
1410	SendCmd "streamlines visible $bool"
1411	if { $bool } {
1412	Rappture::Tooltip::for $itk_component(streamlines) \
1413	"Hide the streamlines"
1414	} else {
1415	Rappture::Tooltip::for $itk_component(streamlines) \
1416	"Show the streamlines"
1417	}
1418	}
1419	"-streamlinesmode" {
1420	set mode [$itk_component(streammode) value]
1421	set _settings($what) $mode
1422	switch -- $mode {
1423	"lines" {
1424	SendCmd "streamlines lines"
1425	}
1426	"ribbons" {
1427	SendCmd "streamlines ribbons 3 0"
1428	}
1429	"tubes" {
1430	SendCmd "streamlines tubes 5 3"
1431	}
1432	}
1433	}
1434	"-streamlinescolormap" {
1435	set colormap [$itk_component(colormap) value]
1436	set _settings($what) $colormap
1437	SetCurrentColormap $colormap
1438	set _legendPending 1
1439	}
1440	"-streamlinesopacity" {
1441	set val $_settings($what)
1442	set sval [expr { 0.01 * double($val) }]
1443	SendCmd "streamlines opacity $sval"
1444	}
1445	"-streamlineslength" {
1446	set val $_settings($what)
1447	set sval [expr { (0.01 * double($val)) / 0.7 }]
1448	foreach axis {x y z} {
1449	foreach {min max} $_limits($axis) break
1450	set ${axis}len [expr double($max) - double($min)]
1451	}
1452	set length [expr { $sval * ($xlen + $ylen + $zlen) } ]
1453	SendCmd "streamlines length $length"
1454	}
1455	"-streamlineslighting" {
1456	set bool $_settings($what)
1457	SendCmd "streamlines lighting $bool"
1458	}
1459	"-surfaceopacity" {
1460	set val $_settings($what)
1461	set sval [expr { 0.01 * double($val) }]
1462	SendCmd "polydata opacity $sval"
1463	}
1464	"-surfacewireframe" {
1465	set bool $_settings($what)
1466	SendCmd "polydata wireframe $bool"
1467	}
1468	"-surfacevisible" {
1469	set bool $_settings($what)
1470	SendCmd "polydata visible $bool"
1471	if { $bool } {
1472	Rappture::Tooltip::for $itk_component(surface) \
1473	"Hide the boundary surface"
1474	} else {
1475	Rappture::Tooltip::for $itk_component(surface) \
1476	"Show the boundary surface"
1477	}
1478	}
1479	"-surfacelighting" {
1480	set bool $_settings($what)
1481	SendCmd "polydata lighting $bool"
1482	}
1483	"-surfaceedges" {
1484	set bool $_settings($what)
1485	SendCmd "polydata edges $bool"
1486	}
1487	"-xgrid" - "-ygrid" - "-zgrid" {
1488	set axis [string range $what 1 1]
1489	set bool $_settings($what)
1490	SendCmd "axis grid $axis $bool"
1491	}
1492	default {
1493	error "don't know how to fix $what"
1494	}
1495	}
1496	}
1497
1498	#
1499	# RequestLegend --
1500	#
1501	# Request a new legend from the server. The size of the legend
1502	# is determined from the height of the canvas. It will be rotated
1503	# to be vertical when drawn.
1504	#
1505	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1506	set font "Arial 8"
1507	set lineht [font metrics $font -linespace]
1508	set w 12
1509	set h [expr {$_height - 3 * ($lineht + 2)}]
1510	if { $h < 1 } {
1511	return
1512	}
1513	# Set the legend on the first streamlines dataset.
1514	if { $_currentColormap != "" } {
1515	set cmap $_currentColormap
1516	if { ![info exists _colormaps($cmap)] } {
1517	BuildColormap $cmap
1518	set _colormaps($cmap) 1
1519	}
1520	#SendCmd "legend $cmap $_colorMode $_curFldName {} $w $h 0"
1521	SendCmd "legend2 $cmap $w $h"
1522	}
1523	}
1524
1525	#
1526	# SetCurrentColormap --
1527	#
1528	itcl::body Rappture::VtkStreamlinesViewer::SetCurrentColormap { name } {
1529	# Keep track of the colormaps that we build.
1530	if { ![info exists _colormaps($name)] } {
1531	BuildColormap $name
1532	set _colormaps($name) 1
1533	}
1534	set _currentColormap $name
1535	SendCmd "streamlines colormap $_currentColormap"
1536	SendCmd "cutplane colormap $_currentColormap"
1537	}
1538
1539	#
1540	# BuildColormap --
1541	#
1542	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name } {
1543	set cmap [ColorsToColormap $name]
1544	if { [llength $cmap] == 0 } {
1545	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1546	}
1547	set amap "0.0 1.0 1.0 1.0"
1548	SendCmd "colormap add $name { $cmap } { $amap }"
1549	}
1550
1551	# ----------------------------------------------------------------------
1552	# CONFIGURATION OPTION: -plotbackground
1553	# ----------------------------------------------------------------------
1554	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1555	if { [isconnected] } {
1556	set rgb [Color2RGB $itk_option(-plotbackground)]
1557	SendCmd "screen bgcolor $rgb"
1558	}
1559	}
1560
1561	# ----------------------------------------------------------------------
1562	# CONFIGURATION OPTION: -plotforeground
1563	# ----------------------------------------------------------------------
1564	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1565	if { [isconnected] } {
1566	set rgb [Color2RGB $itk_option(-plotforeground)]
1567	SendCmd "axis color all $rgb"
1568	SendCmd "outline color $rgb"
1569	SendCmd "cutplane color $rgb"
1570	}
1571	}
1572
1573	itcl::body Rappture::VtkStreamlinesViewer::BuildSurfaceTab {} {
1574
1575	set fg [option get $itk_component(hull) font Font]
1576	#set bfg [option get $itk_component(hull) boldFont Font]
1577
1578	set inner [$itk_component(main) insert end \
1579	-title "Boundary Surface Settings" \
1580	-icon [Rappture::icon volume-on]]
1581	$inner configure -borderwidth 4
1582
1583	checkbutton $inner.surface \
1584	-text "Show Surface" \
1585	-variable [itcl::scope _settings(-surfacevisible)] \
1586	-command [itcl::code $this AdjustSetting -surfacevisible] \
1587	-font "Arial 9"
1588
1589	checkbutton $inner.wireframe \
1590	-text "Show Wireframe" \
1591	-variable [itcl::scope _settings(-surfacewireframe)] \
1592	-command [itcl::code $this AdjustSetting -surfacewireframe] \
1593	-font "Arial 9"
1594
1595	checkbutton $inner.lighting \
1596	-text "Enable Lighting" \
1597	-variable [itcl::scope _settings(-surfacelighting)] \
1598	-command [itcl::code $this AdjustSetting -surfacelighting] \
1599	-font "Arial 9"
1600
1601	checkbutton $inner.edges \
1602	-text "Show Edges" \
1603	-variable [itcl::scope _settings(-surfaceedges)] \
1604	-command [itcl::code $this AdjustSetting -surfaceedges] \
1605	-font "Arial 9"
1606
1607	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1608	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1609	-variable [itcl::scope _settings(-surfaceopacity)] \
1610	-width 10 \
1611	-showvalue off \
1612	-command [itcl::code $this AdjustSetting -surfaceopacity]
1613
1614	blt::table $inner \
1615	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1616	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1617	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1618	3,0 $inner.opacity_l -anchor w -pady 2 \
1619	3,1 $inner.opacity -fill x -pady 2
1620
1621	blt::table configure $inner r* c* -resize none
1622	blt::table configure $inner r4 c1 -resize expand
1623	}
1624
1625	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1626
1627	set fg [option get $itk_component(hull) font Font]
1628	#set bfg [option get $itk_component(hull) boldFont Font]
1629
1630	set inner [$itk_component(main) insert end \
1631	-title "Streams Settings" \
1632	-icon [Rappture::icon streamlines-on]]
1633	$inner configure -borderwidth 4
1634
1635	checkbutton $inner.streamlines \
1636	-text "Show Streamlines" \
1637	-variable [itcl::scope _settings(-streamlinesvisible)] \
1638	-command [itcl::code $this AdjustSetting -streamlinesvisible] \
1639	-font "Arial 9"
1640
1641	checkbutton $inner.lighting \
1642	-text "Enable Lighting" \
1643	-variable [itcl::scope _settings(-streamlineslighting)] \
1644	-command [itcl::code $this AdjustSetting -streamlineslighting] \
1645	-font "Arial 9"
1646
1647	checkbutton $inner.seeds \
1648	-text "Show Seeds" \
1649	-variable [itcl::scope _settings(-streamlinesseedsvisible)] \
1650	-command [itcl::code $this AdjustSetting -streamlinesseedsvisible] \
1651	-font "Arial 9"
1652
1653	label $inner.mode_l -text "Mode" -font "Arial 9"
1654	itk_component add streammode {
1655	Rappture::Combobox $inner.mode -width 10 -editable no
1656	}
1657	$inner.mode choices insert end \
1658	"lines" "lines" \
1659	"ribbons" "ribbons" \
1660	"tubes" "tubes"
1661	$itk_component(streammode) value $_settings(-streamlinesmode)
1662	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -streamlinesmode]
1663
1664	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1665	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1666	-variable [itcl::scope _settings(-streamlinesopacity)] \
1667	-width 10 \
1668	-showvalue off \
1669	-command [itcl::code $this AdjustSetting -streamlinesopacity]
1670
1671	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1672	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1673	-variable [itcl::scope _settings(-streamlinesnumseeds)] \
1674	-width 10 \
1675	-showvalue on \
1676	-command [itcl::code $this AdjustSetting -streamlinesnumseeds]
1677
1678	label $inner.scale_l -text "Length" -font "Arial 9"
1679	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1680	-variable [itcl::scope _settings(-streamlineslength)] \
1681	-width 10 \
1682	-showvalue off \
1683	-command [itcl::code $this AdjustSetting -streamlineslength]
1684
1685	label $inner.field_l -text "Color by" -font "Arial 9"
1686	itk_component add field {
1687	Rappture::Combobox $inner.field -width 10 -editable no
1688	}
1689	bind $inner.field <<Value>> \
1690	[itcl::code $this AdjustSetting -field]
1691
1692	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1693	itk_component add colormap {
1694	Rappture::Combobox $inner.colormap -width 10 -editable no
1695	}
1696	$inner.colormap choices insert end [GetColormapList]
1697
1698	$itk_component(colormap) value "BCGYR"
1699	bind $inner.colormap <<Value>> \
1700	[itcl::code $this AdjustSetting -streamlinescolormap]
1701
1702	blt::table $inner \
1703	0,0 $inner.field_l -anchor w -pady 2 \
1704	0,1 $inner.field -fill x -pady 2 \
1705	1,0 $inner.colormap_l -anchor w -pady 2 \
1706	1,1 $inner.colormap -fill x -pady 2 \
1707	2,0 $inner.mode_l -anchor w -pady 2 \
1708	2,1 $inner.mode -fill x -pady 2 \
1709	3,0 $inner.scale_l -anchor w -pady 2 \
1710	3,1 $inner.scale -fill x -pady 2 \
1711	4,0 $inner.opacity_l -anchor w -pady 2 \
1712	4,1 $inner.opacity -fill x -pady 2 \
1713	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1714	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1715	7,0 $inner.density_l -anchor w -pady 2 \
1716	7,1 $inner.density -fill x -pady 2 \
1717
1718	blt::table configure $inner r* c* -resize none
1719	blt::table configure $inner r8 c1 c2 -resize expand
1720	}
1721
1722	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1723
1724	set fg [option get $itk_component(hull) font Font]
1725	#set bfg [option get $itk_component(hull) boldFont Font]
1726
1727	set inner [$itk_component(main) insert end \
1728	-title "Axis Settings" \
1729	-icon [Rappture::icon axis2]]
1730	$inner configure -borderwidth 4
1731
1732	checkbutton $inner.visible \
1733	-text "Axes" \
1734	-variable [itcl::scope _settings(-axesvisible)] \
1735	-command [itcl::code $this AdjustSetting -axesvisible] \
1736	-font "Arial 9"
1737
1738	checkbutton $inner.labels \
1739	-text "Axis Labels" \
1740	-variable [itcl::scope _settings(-axislabelsvisible)] \
1741	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
1742	-font "Arial 9"
1743	label $inner.grid_l -text "Grid" -font "Arial 9"
1744	checkbutton $inner.xgrid \
1745	-text "X" \
1746	-variable [itcl::scope _settings(-xgrid)] \
1747	-command [itcl::code $this AdjustSetting -xgrid] \
1748	-font "Arial 9"
1749	checkbutton $inner.ygrid \
1750	-text "Y" \
1751	-variable [itcl::scope _settings(-ygrid)] \
1752	-command [itcl::code $this AdjustSetting -ygrid] \
1753	-font "Arial 9"
1754	checkbutton $inner.zgrid \
1755	-text "Z" \
1756	-variable [itcl::scope _settings(-zgrid)] \
1757	-command [itcl::code $this AdjustSetting -zgrid] \
1758	-font "Arial 9"
1759	checkbutton $inner.minorticks \
1760	-text "Minor Ticks" \
1761	-variable [itcl::scope _settings(-axisminorticks)] \
1762	-command [itcl::code $this AdjustSetting -axisminorticks] \
1763	-font "Arial 9"
1764
1765	label $inner.mode_l -text "Mode" -font "Arial 9"
1766
1767	itk_component add axismode {
1768	Rappture::Combobox $inner.mode -width 10 -editable no
1769	}
1770	$inner.mode choices insert end \
1771	"static_triad" "static" \
1772	"closest_triad" "closest" \
1773	"furthest_triad" "farthest" \
1774	"outer_edges" "outer"
1775	$itk_component(axismode) value $_settings(-axismode)
1776	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1777
1778	blt::table $inner \
1779	0,0 $inner.visible -anchor w -cspan 4 \
1780	1,0 $inner.labels -anchor w -cspan 4 \
1781	2,0 $inner.minorticks -anchor w -cspan 4 \
1782	4,0 $inner.grid_l -anchor w \
1783	4,1 $inner.xgrid -anchor w \
1784	4,2 $inner.ygrid -anchor w \
1785	4,3 $inner.zgrid -anchor w \
1786	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1787	5,1 $inner.mode -fill x -cspan 3
1788
1789	blt::table configure $inner r* c* -resize none
1790	blt::table configure $inner r7 c6 -resize expand
1791	blt::table configure $inner r3 -height 0.125i
1792	}
1793
1794	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1795	set inner [$itk_component(main) insert end \
1796	-title "Camera Settings" \
1797	-icon [Rappture::icon camera]]
1798	$inner configure -borderwidth 4
1799
1800	label $inner.view_l -text "view" -font "Arial 9"
1801	set f [frame $inner.view]
1802	foreach side { front back left right top bottom } {
1803	button $f.$side -image [Rappture::icon view$side] \
1804	-command [itcl::code $this SetOrientation $side]
1805	Rappture::Tooltip::for $f.$side "Change the view to $side"
1806	pack $f.$side -side left
1807	}
1808
1809	blt::table $inner \
1810	0,0 $inner.view_l -anchor e -pady 2 \
1811	0,1 $inner.view -anchor w -pady 2
1812	blt::table configure $inner r0 -resize none
1813
1814	set labels { qx qy qz qw xpan ypan zoom }
1815	set row 1
1816	foreach tag $labels {
1817	label $inner.${tag}label -text $tag -font "Arial 9"
1818	entry $inner.${tag} -font "Arial 9" -bg white \
1819	-textvariable [itcl::scope _view(-$tag)]
1820	bind $inner.${tag} <Return> \
1821	[itcl::code $this camera set -${tag}]
1822	bind $inner.${tag} <KP_Enter> \
1823	[itcl::code $this camera set -${tag}]
1824	blt::table $inner \
1825	$row,0 $inner.${tag}label -anchor e -pady 2 \
1826	$row,1 $inner.${tag} -anchor w -pady 2
1827	blt::table configure $inner r$row -resize none
1828	incr row
1829	}
1830	checkbutton $inner.ortho \
1831	-text "Orthographic Projection" \
1832	-variable [itcl::scope _view(-ortho)] \
1833	-command [itcl::code $this camera set -ortho] \
1834	-font "Arial 9"
1835	blt::table $inner \
1836	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1837	blt::table configure $inner r$row -resize none
1838	incr row
1839
1840	blt::table configure $inner c* -resize none
1841	blt::table configure $inner c2 -resize expand
1842	blt::table configure $inner r$row -resize expand
1843	}
1844
1845	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1846
1847	set fg [option get $itk_component(hull) font Font]
1848
1849	set inner [$itk_component(main) insert end \
1850	-title "Cutplane Settings" \
1851	-icon [Rappture::icon cutbutton]]
1852
1853	$inner configure -borderwidth 4
1854
1855	checkbutton $inner.visible \
1856	-text "Show Cutplanes" \
1857	-variable [itcl::scope _settings(-cutplanevisible)] \
1858	-command [itcl::code $this AdjustSetting -cutplanevisible] \
1859	-font "Arial 9"
1860
1861	checkbutton $inner.wireframe \
1862	-text "Show Wireframe" \
1863	-variable [itcl::scope _settings(-cutplanewireframe)] \
1864	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
1865	-font "Arial 9"
1866
1867	checkbutton $inner.lighting \
1868	-text "Enable Lighting" \
1869	-variable [itcl::scope _settings(-cutplanelighting)] \
1870	-command [itcl::code $this AdjustSetting -cutplanelighting] \
1871	-font "Arial 9"
1872
1873	checkbutton $inner.edges \
1874	-text "Show Edges" \
1875	-variable [itcl::scope _settings(-cutplaneedges)] \
1876	-command [itcl::code $this AdjustSetting -cutplaneedges] \
1877	-font "Arial 9"
1878
1879	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1880	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1881	-variable [itcl::scope _settings(-cutplaneopacity)] \
1882	-width 10 \
1883	-showvalue off \
1884	-command [itcl::code $this AdjustSetting -cutplaneopacity]
1885	$inner.opacity set $_settings(-cutplaneopacity)
1886
1887	# X-value slicer...
1888	itk_component add xCutButton {
1889	Rappture::PushButton $inner.xbutton \
1890	-onimage [Rappture::icon x-cutplane-red] \
1891	-offimage [Rappture::icon x-cutplane-red] \
1892	-command [itcl::code $this AdjustSetting -cutplanexvisible] \
1893	-variable [itcl::scope _settings(-cutplanexvisible)]
1894	}
1895	Rappture::Tooltip::for $itk_component(xCutButton) \
1896	"Toggle the X-axis cutplane on/off"
1897	$itk_component(xCutButton) select
1898
1899	itk_component add xCutScale {
1900	::scale $inner.xval -from 100 -to 0 \
1901	-width 10 -orient vertical -showvalue yes \
1902	-borderwidth 1 -highlightthickness 0 \
1903	-command [itcl::code $this EventuallySetCutplane x] \
1904	-variable [itcl::scope _settings(-cutplanexposition)] \
1905	-foreground red3 -font "Arial 9 bold"
1906	} {
1907	usual
1908	ignore -borderwidth -highlightthickness -foreground -font
1909	}
1910	# Set the default cutplane value before disabling the scale.
1911	$itk_component(xCutScale) set 50
1912	$itk_component(xCutScale) configure -state disabled
1913	Rappture::Tooltip::for $itk_component(xCutScale) \
1914	"@[itcl::code $this Slice tooltip x]"
1915
1916	# Y-value slicer...
1917	itk_component add yCutButton {
1918	Rappture::PushButton $inner.ybutton \
1919	-onimage [Rappture::icon y-cutplane-green] \
1920	-offimage [Rappture::icon y-cutplane-green] \
1921	-command [itcl::code $this AdjustSetting -cutplaneyvisible] \
1922	-variable [itcl::scope _settings(-cutplaneyvisible)]
1923	}
1924	Rappture::Tooltip::for $itk_component(yCutButton) \
1925	"Toggle the Y-axis cutplane on/off"
1926	$itk_component(yCutButton) select
1927
1928	itk_component add yCutScale {
1929	::scale $inner.yval -from 100 -to 0 \
1930	-width 10 -orient vertical -showvalue yes \
1931	-borderwidth 1 -highlightthickness 0 \
1932	-command [itcl::code $this EventuallySetCutplane y] \
1933	-variable [itcl::scope _settings(-cutplaneyposition)] \
1934	-foreground green3 -font "Arial 9 bold"
1935	} {
1936	usual
1937	ignore -borderwidth -highlightthickness -foreground -font
1938	}
1939	Rappture::Tooltip::for $itk_component(yCutScale) \
1940	"@[itcl::code $this Slice tooltip y]"
1941	# Set the default cutplane value before disabling the scale.
1942	$itk_component(yCutScale) set 50
1943	$itk_component(yCutScale) configure -state disabled
1944
1945	# Z-value slicer...
1946	itk_component add zCutButton {
1947	Rappture::PushButton $inner.zbutton \
1948	-onimage [Rappture::icon z-cutplane-blue] \
1949	-offimage [Rappture::icon z-cutplane-blue] \
1950	-command [itcl::code $this AdjustSetting -cutplanezvisible] \
1951	-variable [itcl::scope _settings(-cutplanezvisible)]
1952	}
1953	Rappture::Tooltip::for $itk_component(zCutButton) \
1954	"Toggle the Z-axis cutplane on/off"
1955	$itk_component(zCutButton) select
1956
1957	itk_component add zCutScale {
1958	::scale $inner.zval -from 100 -to 0 \
1959	-width 10 -orient vertical -showvalue yes \
1960	-borderwidth 1 -highlightthickness 0 \
1961	-command [itcl::code $this EventuallySetCutplane z] \
1962	-variable [itcl::scope _settings(-cutplanezposition)] \
1963	-foreground blue3 -font "Arial 9 bold"
1964	} {
1965	usual
1966	ignore -borderwidth -highlightthickness -foreground -font
1967	}
1968	$itk_component(zCutScale) set 50
1969	$itk_component(zCutScale) configure -state disabled
1970	Rappture::Tooltip::for $itk_component(zCutScale) \
1971	"@[itcl::code $this Slice tooltip z]"
1972
1973	blt::table $inner \
1974	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1975	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
1976	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
1977	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
1978	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
1979	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
1980	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
1981	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
1982	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
1983	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
1984	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
1985
1986	blt::table configure $inner r* c* -resize none
1987	blt::table configure $inner r7 c4 -resize expand
1988	}
1989
1990	#
1991	# camera --
1992	#
1993	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
1994	switch -- $option {
1995	"show" {
1996	puts [array get _view]
1997	}
1998	"set" {
1999	set what [lindex $args 0]
2000	set x $_view($what)
2001	set code [catch { string is double $x } result]
2002	if { $code != 0 \|\| !$result } {
2003	return
2004	}
2005	switch -- $what {
2006	"-ortho" {
2007	if {$_view($what)} {
2008	SendCmd "camera mode ortho"
2009	} else {
2010	SendCmd "camera mode persp"
2011	}
2012	}
2013	"-xpan" - "-ypan" {
2014	PanCamera
2015	}
2016	"-qx" - "-qy" - "-qz" - "-qw" {
2017	set q [ViewToQuaternion]
2018	$_arcball quaternion $q
2019	EventuallyRotate $q
2020	}
2021	"-zoom" {
2022	SendCmd "camera zoom $_view($what)"
2023	}
2024	}
2025	}
2026	}
2027	}
2028
2029	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2030	set bytes ""
2031	foreach dataobj [get] {
2032	foreach comp [$dataobj components] {
2033	set tag $dataobj-$comp
2034	set contents [$dataobj vtkdata $comp]
2035	append bytes "$contents\n"
2036	}
2037	}
2038	return [list .vtk $bytes]
2039	}
2040
2041	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2042	if { [image width $_image(download)] > 0 &&
2043	[image height $_image(download)] > 0 } {
2044	set bytes [$_image(download) data -format "jpeg -quality 100"]
2045	set bytes [Rappture::encoding::decode -as b64 $bytes]
2046	return [list .jpg $bytes]
2047	}
2048	return ""
2049	}
2050
2051	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2052	Rappture::Balloon $popup \
2053	-title "[Rappture::filexfer::label downloadWord] as..."
2054	set inner [$popup component inner]
2055	label $inner.summary -text "" -anchor w
2056	radiobutton $inner.vtk_button -text "VTK data file" \
2057	-variable [itcl::scope _downloadPopup(format)] \
2058	-font "Helvetica 9 " \
2059	-value vtk
2060	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2061	radiobutton $inner.image_button -text "Image File" \
2062	-variable [itcl::scope _downloadPopup(format)] \
2063	-value image
2064	Rappture::Tooltip::for $inner.image_button \
2065	"Save as digital image."
2066
2067	button $inner.ok -text "Save" \
2068	-highlightthickness 0 -pady 2 -padx 3 \
2069	-command $command \
2070	-compound left \
2071	-image [Rappture::icon download]
2072
2073	button $inner.cancel -text "Cancel" \
2074	-highlightthickness 0 -pady 2 -padx 3 \
2075	-command [list $popup deactivate] \
2076	-compound left \
2077	-image [Rappture::icon cancel]
2078
2079	blt::table $inner \
2080	0,0 $inner.summary -cspan 2 \
2081	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2082	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2083	4,1 $inner.cancel -width .9i -fill y \
2084	4,0 $inner.ok -padx 2 -width .9i -fill y
2085	blt::table configure $inner r3 -height 4
2086	blt::table configure $inner r4 -pady 4
2087	raise $inner.image_button
2088	$inner.vtk_button invoke
2089	return $inner
2090	}
2091
2092	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2093	# Parse style string.
2094	set tag $dataobj-$comp
2095	array set style {
2096	-color BCGYR
2097	-constcolor white
2098	-edgecolor black
2099	-edges 0
2100	-lighting 1
2101	-linewidth 1.0
2102	-mode lines
2103	-numseeds 200
2104	-opacity 1.0
2105	-seeds 1
2106	-seedcolor white
2107	-streamlineslength 0.7
2108	-surfacecolor white
2109	-surfaceedgecolor black
2110	-surfaceedges 0
2111	-surfacelighting 1
2112	-surfaceopacity 0.4
2113	-surfacevisible 1
2114	-surfacewireframe 0
2115	-visible 1
2116	}
2117	array set style [$dataobj style $comp]
2118
2119	StartBufferingCommands
2120	SendCmd "streamlines add $tag"
2121	SendCmd "streamlines color [Color2RGB $style(-constcolor)] $tag"
2122	SendCmd "streamlines edges $style(-edges) $tag"
2123	SendCmd "streamlines linecolor [Color2RGB $style(-edgecolor)] $tag"
2124	SendCmd "streamlines linewidth $style(-linewidth) $tag"
2125	SendCmd "streamlines lighting $style(-lighting) $tag"
2126	SendCmd "streamlines opacity $style(-opacity) $tag"
2127	SendCmd "streamlines seed color [Color2RGB $style(-seedcolor)] $tag"
2128	SendCmd "streamlines seed visible $style(-seeds) $tag"
2129	SendCmd "streamlines visible $style(-visible) $tag"
2130	set seeds [$dataobj hints seeds]
2131	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2132	set length [string length $seeds]
2133	SendCmd "streamlines seed fmesh $style(-numseeds) data follows $length $tag"
2134	SendData $seeds
2135	set _seeds($dataobj) 1
2136	}
2137	set _settings(-streamlineslighting) $style(-lighting)
2138	$itk_component(streammode) value $style(-mode)
2139	AdjustSetting -streamlinesmode
2140	set _settings(-streamlinesnumseeds) $style(-numseeds)
2141	set _settings(-streamlinesopacity) [expr $style(-opacity) * 100.0]
2142	set _settings(-streamlineslength) [expr $style(-streamlineslength) * 100.0]
2143	set _settings(-streamlinesseedsvisible) $style(-seeds)
2144	set _settings(-streamlinesvisible) $style(-visible)
2145
2146	SendCmd "cutplane add $tag"
2147
2148	SendCmd "polydata add $tag"
2149	SendCmd "polydata color [Color2RGB $style(-surfacecolor)] $tag"
2150	SendCmd "polydata colormode constant {} $tag"
2151	SendCmd "polydata edges $style(-surfaceedges) $tag"
2152	SendCmd "polydata linecolor [Color2RGB $style(-surfaceedgecolor)] $tag"
2153	SendCmd "polydata lighting $style(-surfacelighting) $tag"
2154	SendCmd "polydata opacity $style(-surfaceopacity) $tag"
2155	SendCmd "polydata wireframe $style(-surfacewireframe) $tag"
2156	SendCmd "polydata visible $style(-surfacevisible) $tag"
2157	set _settings(-surfaceedges) $style(-surfaceedges)
2158	set _settings(-surfacelighting) $style(-surfacelighting)
2159	set _settings(-surfaceopacity) [expr $style(-surfaceopacity) * 100.0]
2160	set _settings(-surfacewireframe) $style(-surfacewireframe)
2161	set _settings(-surfacevisible) $style(-surfacevisible)
2162	StopBufferingCommands
2163	SetCurrentColormap $style(-color)
2164	$itk_component(colormap) value $style(-color)
2165	}
2166
2167	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2168	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2169	return 0
2170	}
2171	return 1
2172	}
2173
2174	# ----------------------------------------------------------------------
2175	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2176	#
2177	# Invoked automatically whenever the "legend" command comes in from
2178	# the rendering server. Indicates that binary image data with the
2179	# specified <size> will follow.
2180	# ----------------------------------------------------------------------
2181	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2182	set _legendPending 0
2183	set _title $title
2184	regsub {\(mag\)} $title "" _title
2185	if { [IsConnected] } {
2186	set bytes [ReceiveBytes $size]
2187	if { ![info exists _image(legend)] } {
2188	set _image(legend) [image create photo]
2189	}
2190	$_image(legend) configure -data $bytes
2191	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2192	if { [catch {DrawLegend} errs] != 0 } {
2193	puts stderr errs=$errs
2194	}
2195	}
2196	}
2197
2198	#
2199	# DrawLegend --
2200	#
2201	# Draws the legend in it's own canvas which resides to the right
2202	# of the contour plot area.
2203	#
2204	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2205	set fname $_curFldName
2206	set c $itk_component(view)
2207	set w [winfo width $c]
2208	set h [winfo height $c]
2209	set font "Arial 8"
2210	set lineht [font metrics $font -linespace]
2211
2212	if { [info exists _fields($fname)] } {
2213	foreach { title units } $_fields($fname) break
2214	if { $units != "" } {
2215	set title [format "%s (%s)" $title $units]
2216	}
2217	} else {
2218	set title $fname
2219	}
2220	if { $_settings(-legendvisible) } {
2221	set x [expr $w - 2]
2222	if { [$c find withtag "legend"] == "" } {
2223	set y 2
2224	$c create text $x $y \
2225	-anchor ne \
2226	-fill $itk_option(-plotforeground) -tags "title legend" \
2227	-font $font
2228	incr y $lineht
2229	$c create text $x $y \
2230	-anchor ne \
2231	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2232	-font $font
2233	incr y $lineht
2234	$c create image $x $y \
2235	-anchor ne \
2236	-image $_image(legend) -tags "colormap legend"
2237	$c create text $x [expr {$h-2}] \
2238	-anchor se \
2239	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2240	-font $font
2241	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2242	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2243	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2244	}
2245	$c bind title <ButtonPress> [itcl::code $this Combo post]
2246	$c bind title <Enter> [itcl::code $this Combo activate]
2247	$c bind title <Leave> [itcl::code $this Combo deactivate]
2248	# Reset the item coordinates according the current size of the plot.
2249	$c itemconfigure title -text $title
2250	if { [info exists _limits($_curFldName)] } {
2251	foreach {vmin vmax} $_limits($_curFldName) break
2252	$c itemconfigure vmin -text [format %g $vmin]
2253	$c itemconfigure vmax -text [format %g $vmax]
2254	}
2255	set y 2
2256	$c coords title $x $y
2257	incr y $lineht
2258	$c coords vmax $x $y
2259	incr y $lineht
2260	$c coords colormap $x $y
2261	$c coords vmin $x [expr {$h - 2}]
2262	}
2263	}
2264
2265	#
2266	# EnterLegend --
2267	#
2268	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2269	SetLegendTip $x $y
2270	}
2271
2272	#
2273	# MotionLegend --
2274	#
2275	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2276	Rappture::Tooltip::tooltip cancel
2277	set c $itk_component(view)
2278	SetLegendTip $x $y
2279	}
2280
2281	#
2282	# LeaveLegend --
2283	#
2284	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2285	Rappture::Tooltip::tooltip cancel
2286	.rappturetooltip configure -icon ""
2287	}
2288
2289	#
2290	# SetLegendTip --
2291	#
2292	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2293	set c $itk_component(view)
2294	set w [winfo width $c]
2295	set h [winfo height $c]
2296	set font "Arial 8"
2297	set lineht [font metrics $font -linespace]
2298
2299	set imgHeight [image height $_image(legend)]
2300	set coords [$c coords colormap]
2301	set imgX [expr $w - [image width $_image(legend)] - 2]
2302	set imgY [expr $y - 2 * ($lineht + 2)]
2303
2304	if { [info exists _fields($_title)] } {
2305	foreach { title units } $_fields($_title) break
2306	if { $units != "" } {
2307	set title [format "%s (%s)" $title $units]
2308	}
2309	} else {
2310	set title $_title
2311	}
2312	# Make a swatch of the selected color
2313	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2314	#puts stderr "out of range: $imgY"
2315	return
2316	}
2317	if { ![info exists _image(swatch)] } {
2318	set _image(swatch) [image create photo -width 24 -height 24]
2319	}
2320	set color [eval format "\#%02x%02x%02x" $pixel]
2321	$_image(swatch) put black -to 0 0 23 23
2322	$_image(swatch) put $color -to 1 1 22 22
2323	.rappturetooltip configure -icon $_image(swatch)
2324
2325	# Compute the value of the point
2326	if { [info exists _limits($_curFldName)] } {
2327	foreach {vmin vmax} $_limits($_curFldName) break
2328	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2329	set value [expr $t * ($vmax - $vmin) + $vmin]
2330	} else {
2331	set value 0.0
2332	}
2333	set tipx [expr $x + 15]
2334	set tipy [expr $y - 5]
2335	Rappture::Tooltip::text $c "$title $value"
2336	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2337	}
2338
2339	# ----------------------------------------------------------------------
2340	# USAGE: Slice move x\|y\|z <newval>
2341	#
2342	# Called automatically when the user drags the slider to move the
2343	# cut plane that slices 3D data. Gets the current value from the
2344	# slider and moves the cut plane to the appropriate point in the
2345	# data set.
2346	# ----------------------------------------------------------------------
2347	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2348	switch -- $option {
2349	"move" {
2350	set axis [lindex $args 0]
2351	set newval [lindex $args 1]
2352	if {[llength $args] != 2} {
2353	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2354	}
2355	set newpos [expr {0.01*$newval}]
2356	SendCmd "cutplane slice $axis $newpos"
2357	}
2358	"tooltip" {
2359	set axis [lindex $args 0]
2360	set val [$itk_component(${axis}CutScale) get]
2361	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2362	}
2363	default {
2364	error "bad option \"$option\": should be axis, move, or tooltip"
2365	}
2366	}
2367	}
2368
2369	# ----------------------------------------------------------------------
2370	# USAGE: _dropdown post
2371	# USAGE: _dropdown unpost
2372	# USAGE: _dropdown select
2373	#
2374	# Used internally to handle the dropdown list for this combobox. The
2375	# post/unpost options are invoked when the list is posted or unposted
2376	# to manage the relief of the controlling button. The select option
2377	# is invoked whenever there is a selection from the list, to assign
2378	# the value back to the gauge.
2379	# ----------------------------------------------------------------------
2380	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2381	set c $itk_component(view)
2382	switch -- $option {
2383	post {
2384	foreach { x1 y1 x2 y2 } [$c bbox title] break
2385	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2386	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2387	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2388	tk_popup $itk_component(fieldmenu) $x $y
2389	}
2390	activate {
2391	$c itemconfigure title -fill red
2392	}
2393	deactivate {
2394	$c itemconfigure title -fill white
2395	}
2396	invoke {
2397	$itk_component(field) value $_curFldLabel
2398	AdjustSetting -field
2399	}
2400	default {
2401	error "bad option \"$option\": should be post, unpost, select"
2402	}
2403	}
2404	}
2405
2406	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2407	array set positions {
2408	front "1 0 0 0"
2409	back "0 0 1 0"
2410	left "0.707107 0 -0.707107 0"
2411	right "0.707107 0 0.707107 0"
2412	top "0.707107 -0.707107 0 0"
2413	bottom "0.707107 0.707107 0 0"
2414	}
2415	foreach name { -qw -qx -qy -qz } value $positions($side) {
2416	set _view($name) $value
2417	}
2418	set q [ViewToQuaternion]
2419	$_arcball quaternion $q
2420	SendCmd "camera orient $q"
2421	SendCmd "camera reset"
2422	set _view(-xpan) 0
2423	set _view(-ypan) 0
2424	set _view(-zoom) 1.0
2425	}

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