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source: branches/1.3/gui/scripts/vtkstreamlinesviewer.tcl @ 4681

Last change on this file since 4681 was 4681, checked in by ldelgass, 9 years ago
merge r4679 from trunk
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	protected method Connect {}
65	protected method CurrentDatasets {args}
66	protected method Disconnect {}
67	protected method DoResize {}
68	protected method DoReseed {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method ReceiveLegend { colormap title vmin vmax size }
78	protected method Rotate {option x y}
79	protected method Zoom {option}
80
81	# The following methods are only used by this class.
82	private method BuildAxisTab {}
83	private method BuildCameraTab {}
84	private method BuildColormap { name colors }
85	private method BuildCutplaneTab {}
86	private method BuildDownloadPopup { widget command }
87	private method BuildStreamsTab {}
88	private method BuildVolumeTab {}
89	private method DrawLegend {}
90	private method Combo { option }
91	private method EnterLegend { x y }
92	private method EventuallyResize { w h }
93	private method EventuallyReseed { numPoints }
94	private method EventuallyRotate { q }
95	private method EventuallySetCutplane { axis args }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetColormap { dataobj comp }
104	private method ChangeColormap { dataobj comp color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method Slice {option args}
108	private method SetOrientation { side }
109
110	private variable _arcball ""
111
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119	private variable _dataset2style ;# maps dataobj-component to transfunc
120
121	private variable _click ; # info used for rotate operations
122	private variable _limits ; # autoscale min/max for all axes
123	private variable _view ; # view params for 3D view
124	private variable _settings
125	private variable _style; # Array of current component styles.
126	private variable _initialStyle; # Array of initial component styles.
127	private variable _reset 1; # indicates if camera needs to be reset
128	# to starting position.
129
130	private variable _first "" ; # This is the topmost dataset.
131	private variable _start 0
132	private variable _title ""
133	private variable _seeds
134
135	common _downloadPopup; # download options from popup
136	private common _hardcopy
137	private variable _width 0
138	private variable _height 0
139	private variable _resizePending 0
140	private variable _reseedPending 0
141	private variable _rotatePending 0
142	private variable _cutplanePending 0
143	private variable _legendPending 0
144	private variable _vectorFields
145	private variable _scalarFields
146	private variable _fields
147	private variable _curFldName ""
148	private variable _curFldLabel ""
149	private variable _field ""
150	private variable _numSeeds 200
151	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
152	}
153
154	itk::usual VtkStreamlinesViewer {
155	keep -background -foreground -cursor -font
156	keep -plotbackground -plotforeground
157	}
158
159	# ----------------------------------------------------------------------
160	# CONSTRUCTOR
161	# ----------------------------------------------------------------------
162	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
163	package require vtk
164	set _serverType "vtkvis"
165
166	EnableWaitDialog 2000
167
168	# Rebuild event
169	$_dispatcher register !rebuild
170	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
171
172	# Resize event
173	$_dispatcher register !resize
174	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
175
176	# Reseed event
177	$_dispatcher register !reseed
178	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
179
180	# Rotate event
181	$_dispatcher register !rotate
182	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
183
184	# Legend event
185	$_dispatcher register !legend
186	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
187
188	# X-Cutplane event
189	$_dispatcher register !xcutplane
190	$_dispatcher dispatch $this !xcutplane \
191	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
192
193	# Y-Cutplane event
194	$_dispatcher register !ycutplane
195	$_dispatcher dispatch $this !ycutplane \
196	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
197
198	# Z-Cutplane event
199	$_dispatcher register !zcutplane
200	$_dispatcher dispatch $this !zcutplane \
201	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
202
203	#
204	# Populate parser with commands handle incoming requests
205	#
206	$_parser alias image [itcl::code $this ReceiveImage]
207	$_parser alias dataset [itcl::code $this ReceiveDataset]
208	$_parser alias legend [itcl::code $this ReceiveLegend]
209
210	# Initialize the view to some default parameters.
211	array set _view {
212	qw 0.853553
213	qx -0.353553
214	qy 0.353553
215	qz 0.146447
216	zoom 1.0
217	xpan 0
218	ypan 0
219	ortho 0
220	}
221	set _arcball [blt::arcball create 100 100]
222	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
223	$_arcball quaternion $q
224
225	array set _settings [subst {
226	axesVisible 1
227	axisLabelsVisible 1
228	axisMinorTicks 1
229	axisXGrid 0
230	axisYGrid 0
231	axisZGrid 0
232	cutplaneEdges 0
233	cutplaneLighting 1
234	cutplaneOpacity 100
235	cutplaneVisible 0
236	cutplaneWireframe 0
237	cutplaneXPosition 50
238	cutplaneXVisible 1
239	cutplaneYPosition 50
240	cutplaneYVisible 1
241	cutplaneZPosition 50
242	cutplaneZVisible 1
243	legendVisible 1
244	streamlinesLighting 1
245	streamlinesMode lines
246	streamlinesNumSeeds 200
247	streamlinesOpacity 100
248	streamlinesScale 1
249	streamlinesSeedsVisible 0
250	streamlinesVisible 1
251	volumeEdges 0
252	volumeLighting 1
253	volumeOpacity 40
254	volumeVisible 1
255	volumeWireframe 0
256	}]
257
258	itk_component add view {
259	canvas $itk_component(plotarea).view \
260	-highlightthickness 0 -borderwidth 0
261	} {
262	usual
263	ignore -highlightthickness -borderwidth -background
264	}
265
266	itk_component add fieldmenu {
267	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
268	-tearoff no
269	} {
270	usual
271	ignore -background -foreground -relief -tearoff
272	}
273	set c $itk_component(view)
274	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
275	bind $c <4> [itcl::code $this Zoom in 0.25]
276	bind $c <5> [itcl::code $this Zoom out 0.25]
277	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
278	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
279	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
280	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
281	bind $c <Enter> "focus %W"
282	bind $c <Control-F1> [itcl::code $this ToggleConsole]
283
284	# Fix the scrollregion in case we go off screen
285	$c configure -scrollregion [$c bbox all]
286
287	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
288	set _map(cwidth) -1
289	set _map(cheight) -1
290	set _map(zoom) 1.0
291	set _map(original) ""
292
293	set f [$itk_component(main) component controls]
294	itk_component add reset {
295	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
296	-highlightthickness 0 \
297	-image [Rappture::icon reset-view] \
298	-command [itcl::code $this Zoom reset]
299	} {
300	usual
301	ignore -highlightthickness
302	}
303	pack $itk_component(reset) -side top -padx 2 -pady 2
304	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
305
306	itk_component add zoomin {
307	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
308	-highlightthickness 0 \
309	-image [Rappture::icon zoom-in] \
310	-command [itcl::code $this Zoom in]
311	} {
312	usual
313	ignore -highlightthickness
314	}
315	pack $itk_component(zoomin) -side top -padx 2 -pady 2
316	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
317
318	itk_component add zoomout {
319	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
320	-highlightthickness 0 \
321	-image [Rappture::icon zoom-out] \
322	-command [itcl::code $this Zoom out]
323	} {
324	usual
325	ignore -highlightthickness
326	}
327	pack $itk_component(zoomout) -side top -padx 2 -pady 2
328	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
329
330	itk_component add volume {
331	Rappture::PushButton $f.volume \
332	-onimage [Rappture::icon volume-on] \
333	-offimage [Rappture::icon volume-off] \
334	-variable [itcl::scope _settings(volumeVisible)] \
335	-command [itcl::code $this AdjustSetting volumeVisible]
336	}
337	$itk_component(volume) select
338	Rappture::Tooltip::for $itk_component(volume) \
339	"Don't display the volume"
340	pack $itk_component(volume) -padx 2 -pady 2
341
342	itk_component add streamlines {
343	Rappture::PushButton $f.streamlines \
344	-onimage [Rappture::icon streamlines-on] \
345	-offimage [Rappture::icon streamlines-off] \
346	-variable [itcl::scope _settings(streamlinesVisible)] \
347	-command [itcl::code $this AdjustSetting streamlinesVisible] \
348	}
349	$itk_component(streamlines) select
350	Rappture::Tooltip::for $itk_component(streamlines) \
351	"Toggle the streamlines on/off"
352	pack $itk_component(streamlines) -padx 2 -pady 2
353
354	itk_component add cutplane {
355	Rappture::PushButton $f.cutplane \
356	-onimage [Rappture::icon cutbutton] \
357	-offimage [Rappture::icon cutbutton] \
358	-variable [itcl::scope _settings(cutplaneVisible)] \
359	-command [itcl::code $this AdjustSetting cutplaneVisible]
360	}
361	Rappture::Tooltip::for $itk_component(cutplane) \
362	"Show/Hide cutplanes"
363	pack $itk_component(cutplane) -padx 2 -pady 2
364
365
366	if { [catch {
367	BuildVolumeTab
368	BuildStreamsTab
369	BuildCutplaneTab
370	BuildAxisTab
371	BuildCameraTab
372	} errs] != 0 } {
373	puts stderr errs=$errs
374	}
375	# Legend
376
377	set _image(legend) [image create photo]
378	itk_component add legend {
379	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
380	} {
381	usual
382	ignore -highlightthickness
383	rename -background -plotbackground plotBackground Background
384	}
385
386	# Hack around the Tk panewindow. The problem is that the requested
387	# size of the 3d view isn't set until an image is retrieved from
388	# the server. So the panewindow uses the tiny size.
389	set w 10000
390	pack forget $itk_component(view)
391	blt::table $itk_component(plotarea) \
392	0,0 $itk_component(view) -fill both -reqwidth $w
393	blt::table configure $itk_component(plotarea) c1 -resize none
394
395	# Bindings for rotation via mouse
396	bind $itk_component(view) <ButtonPress-1> \
397	[itcl::code $this Rotate click %x %y]
398	bind $itk_component(view) <B1-Motion> \
399	[itcl::code $this Rotate drag %x %y]
400	bind $itk_component(view) <ButtonRelease-1> \
401	[itcl::code $this Rotate release %x %y]
402	bind $itk_component(view) <Configure> \
403	[itcl::code $this EventuallyResize %w %h]
404
405	if 0 {
406	bind $itk_component(view) <Configure> \
407	[itcl::code $this EventuallyResize %w %h]
408	}
409	# Bindings for panning via mouse
410	bind $itk_component(view) <ButtonPress-2> \
411	[itcl::code $this Pan click %x %y]
412	bind $itk_component(view) <B2-Motion> \
413	[itcl::code $this Pan drag %x %y]
414	bind $itk_component(view) <ButtonRelease-2> \
415	[itcl::code $this Pan release %x %y]
416
417	#bind $itk_component(view) <ButtonRelease-3> \
418	# [itcl::code $this Pick %x %y]
419
420	# Bindings for panning via keyboard
421	bind $itk_component(view) <KeyPress-Left> \
422	[itcl::code $this Pan set -10 0]
423	bind $itk_component(view) <KeyPress-Right> \
424	[itcl::code $this Pan set 10 0]
425	bind $itk_component(view) <KeyPress-Up> \
426	[itcl::code $this Pan set 0 -10]
427	bind $itk_component(view) <KeyPress-Down> \
428	[itcl::code $this Pan set 0 10]
429	bind $itk_component(view) <Shift-KeyPress-Left> \
430	[itcl::code $this Pan set -2 0]
431	bind $itk_component(view) <Shift-KeyPress-Right> \
432	[itcl::code $this Pan set 2 0]
433	bind $itk_component(view) <Shift-KeyPress-Up> \
434	[itcl::code $this Pan set 0 -2]
435	bind $itk_component(view) <Shift-KeyPress-Down> \
436	[itcl::code $this Pan set 0 2]
437
438	# Bindings for zoom via keyboard
439	bind $itk_component(view) <KeyPress-Prior> \
440	[itcl::code $this Zoom out]
441	bind $itk_component(view) <KeyPress-Next> \
442	[itcl::code $this Zoom in]
443
444	bind $itk_component(view) <Enter> "focus $itk_component(view)"
445
446	if {[string equal "x11" [tk windowingsystem]]} {
447	# Bindings for zoom via mouse
448	bind $itk_component(view) <4> [itcl::code $this Zoom out]
449	bind $itk_component(view) <5> [itcl::code $this Zoom in]
450	}
451
452	set _image(download) [image create photo]
453
454	eval itk_initialize $args
455	Connect
456	}
457
458	# ----------------------------------------------------------------------
459	# DESTRUCTOR
460	# ----------------------------------------------------------------------
461	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
462	Disconnect
463	image delete $_image(plot)
464	image delete $_image(download)
465	catch { blt::arcball destroy $_arcball }
466	}
467
468	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
469	if { $_width < 2 } {
470	set _width 500
471	}
472	if { $_height < 2 } {
473	set _height 500
474	}
475	set _start [clock clicks -milliseconds]
476	SendCmd "screen size $_width $_height"
477
478	set _legendPending 1
479	set _resizePending 0
480	}
481
482	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
483	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
484	SendCmd "camera orient $q"
485	set _rotatePending 0
486	}
487
488	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
489	foreach dataset [CurrentDatasets -visible] {
490	foreach {dataobj comp} [split $dataset -] break
491	# This command works for either random or fmesh seeds
492	SendCmd "streamlines seed numpts $_numSeeds $dataset"
493	}
494	set _reseedPending 0
495	}
496
497	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
498	set _width $w
499	set _height $h
500	$_arcball resize $w $h
501	if { !$_resizePending } {
502	set _resizePending 1
503	$_dispatcher event -after 400 !resize
504	}
505	}
506
507	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
508	set _numSeeds $numPoints
509	if { !$_reseedPending } {
510	set _reseedPending 1
511	$_dispatcher event -after 600 !reseed
512	}
513	}
514
515	set rotate_delay 100
516
517	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
518	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
519	if { !$_rotatePending } {
520	set _rotatePending 1
521	global rotate_delay
522	$_dispatcher event -after $rotate_delay !rotate
523	}
524	}
525
526	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
527	if { !$_cutplanePending } {
528	set _cutplanePending 1
529	$_dispatcher event -after 100 !${axis}cutplane
530	}
531	}
532
533	# ----------------------------------------------------------------------
534	# USAGE: add <dataobj> ?<settings>?
535	#
536	# Clients use this to add a data object to the plot. The optional
537	# <settings> are used to configure the plot. Allowed settings are
538	# -color, -brightness, -width, -linestyle, and -raise.
539	# ----------------------------------------------------------------------
540	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
541	array set params {
542	-color auto
543	-width 1
544	-linestyle solid
545	-brightness 0
546	-raise 0
547	-description ""
548	-param ""
549	-type ""
550	}
551	array set params $settings
552	set params(-description) ""
553	set params(-param) ""
554	array set params $settings
555
556	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
557	# can't handle -autocolors yet
558	set params(-color) black
559	}
560	set pos [lsearch -exact $_dlist $dataobj]
561	if {$pos < 0} {
562	lappend _dlist $dataobj
563	}
564	set _obj2ovride($dataobj-color) $params(-color)
565	set _obj2ovride($dataobj-width) $params(-width)
566	set _obj2ovride($dataobj-raise) $params(-raise)
567	$_dispatcher event -idle !rebuild
568	}
569
570
571	# ----------------------------------------------------------------------
572	# USAGE: delete ?<dataobj1> <dataobj2> ...?
573	#
574	# Clients use this to delete a dataobj from the plot. If no dataobjs
575	# are specified, then all dataobjs are deleted. No data objects are
576	# deleted. They are only removed from the display list.
577	#
578	# ----------------------------------------------------------------------
579	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
580	if { [llength $args] == 0} {
581	set args $_dlist
582	}
583	# Delete all specified dataobjs
584	set changed 0
585	foreach dataobj $args {
586	set pos [lsearch -exact $_dlist $dataobj]
587	if { $pos < 0 } {
588	continue; # Don't know anything about it.
589	}
590	# Remove it from the dataobj list.
591	set _dlist [lreplace $_dlist $pos $pos]
592	array unset _obj2ovride $dataobj-*
593	array unset _settings $dataobj-*
594	set changed 1
595	}
596	# If anything changed, then rebuild the plot
597	if { $changed } {
598	$_dispatcher event -idle !rebuild
599	}
600	}
601
602	# ----------------------------------------------------------------------
603	# USAGE: get ?-objects?
604	# USAGE: get ?-visible?
605	# USAGE: get ?-image view?
606	#
607	# Clients use this to query the list of objects being plotted, in
608	# order from bottom to top of this result. The optional "-image"
609	# flag can also request the internal images being shown.
610	# ----------------------------------------------------------------------
611	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
612	if {[llength $args] == 0} {
613	set args "-objects"
614	}
615
616	set op [lindex $args 0]
617	switch -- $op {
618	"-objects" {
619	# put the dataobj list in order according to -raise options
620	set dlist {}
621	foreach dataobj $_dlist {
622	if { ![IsValidObject $dataobj] } {
623	continue
624	}
625	if {[info exists _obj2ovride($dataobj-raise)] &&
626	$_obj2ovride($dataobj-raise)} {
627	set dlist [linsert $dlist 0 $dataobj]
628	} else {
629	lappend dlist $dataobj
630	}
631	}
632	return $dlist
633	}
634	"-visible" {
635	set dlist {}
636	foreach dataobj $_dlist {
637	if { ![IsValidObject $dataobj] } {
638	continue
639	}
640	if { ![info exists _obj2ovride($dataobj-raise)] } {
641	# No setting indicates that the object isn't visible.
642	continue
643	}
644	# Otherwise use the -raise parameter to put the object to
645	# the front of the list.
646	if { $_obj2ovride($dataobj-raise) } {
647	set dlist [linsert $dlist 0 $dataobj]
648	} else {
649	lappend dlist $dataobj
650	}
651	}
652	return $dlist
653	}
654	-image {
655	if {[llength $args] != 2} {
656	error "wrong # args: should be \"get -image view\""
657	}
658	switch -- [lindex $args end] {
659	view {
660	return $_image(plot)
661	}
662	default {
663	error "bad image name \"[lindex $args end]\": should be view"
664	}
665	}
666	}
667	default {
668	error "bad option \"$op\": should be -objects or -image"
669	}
670	}
671	}
672
673	# ----------------------------------------------------------------------
674	# USAGE: scale ?<data1> <data2> ...?
675	#
676	# Sets the default limits for the overall plot according to the
677	# limits of the data for all of the given <data> objects. This
678	# accounts for all objects--even those not showing on the screen.
679	# Because of this, the limits are appropriate for all objects as
680	# the user scans through data in the ResultSet viewer.
681	# ----------------------------------------------------------------------
682	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
683	foreach dataobj $args {
684	foreach axis { x y z } {
685	set lim [$dataobj limits $axis]
686	if { ![info exists _limits($axis)] } {
687	set _limits($axis) $lim
688	continue
689	}
690	foreach {min max} $lim break
691	foreach {amin amax} $_limits($axis) break
692	if { $amin > $min } {
693	set amin $min
694	}
695	if { $amax < $max } {
696	set amax $max
697	}
698	set _limits($axis) [list $amin $amax]
699	}
700	foreach { fname lim } [$dataobj fieldlimits] {
701	if { ![info exists _limits($fname)] } {
702	set _limits($fname) $lim
703	continue
704	}
705	foreach {min max} $lim break
706	foreach {fmin fmax} $_limits($fname) break
707	if { $fmin > $min } {
708	set fmin $min
709	}
710	if { $fmax < $max } {
711	set fmax $max
712	}
713	set _limits($fname) [list $fmin $fmax]
714	}
715	}
716	}
717
718	# ----------------------------------------------------------------------
719	# USAGE: download coming
720	# USAGE: download controls <downloadCommand>
721	# USAGE: download now
722	#
723	# Clients use this method to create a downloadable representation
724	# of the plot. Returns a list of the form {ext string}, where
725	# "ext" is the file extension (indicating the type of data) and
726	# "string" is the data itself.
727	# ----------------------------------------------------------------------
728	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
729	switch $option {
730	coming {
731	if {[catch {
732	blt::winop snap $itk_component(plotarea) $_image(download)
733	}]} {
734	$_image(download) configure -width 1 -height 1
735	$_image(download) put #000000
736	}
737	}
738	controls {
739	set popup .vtkviewerdownload
740	if { ![winfo exists .vtkviewerdownload] } {
741	set inner [BuildDownloadPopup $popup [lindex $args 0]]
742	} else {
743	set inner [$popup component inner]
744	}
745	set _downloadPopup(image_controls) $inner.image_frame
746	set num [llength [get]]
747	set num [expr {($num == 1) ? "1 result" : "$num results"}]
748	set word [Rappture::filexfer::label downloadWord]
749	$inner.summary configure -text "$word $num in the following format:"
750	update idletasks ;# Fix initial sizes
751	return $popup
752	}
753	now {
754	set popup .vtkviewerdownload
755	if {[winfo exists .vtkviewerdownload]} {
756	$popup deactivate
757	}
758	switch -- $_downloadPopup(format) {
759	"image" {
760	return [$this GetImage [lindex $args 0]]
761	}
762	"vtk" {
763	return [$this GetVtkData [lindex $args 0]]
764	}
765	}
766	return ""
767	}
768	default {
769	error "bad option \"$option\": should be coming, controls, now"
770	}
771	}
772	}
773
774	# ----------------------------------------------------------------------
775	# USAGE: Connect ?<host:port>,<host:port>...?
776	#
777	# Clients use this method to establish a connection to a new
778	# server, or to reestablish a connection to the previous server.
779	# Any existing connection is automatically closed.
780	# ----------------------------------------------------------------------
781	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
782	set _hosts [GetServerList "vtkvis"]
783	if { "" == $_hosts } {
784	return 0
785	}
786	set result [VisViewer::Connect $_hosts]
787	if { $result } {
788	if { $_reportClientInfo } {
789	# Tell the server the viewer, hub, user and session.
790	# Do this immediately on connect before buffering any commands
791	global env
792
793	set info {}
794	set user "???"
795	if { [info exists env(USER)] } {
796	set user $env(USER)
797	}
798	set session "???"
799	if { [info exists env(SESSION)] } {
800	set session $env(SESSION)
801	}
802	lappend info "version" "$Rappture::version"
803	lappend info "build" "$Rappture::build"
804	lappend info "svnurl" "$Rappture::svnurl"
805	lappend info "installdir" "$Rappture::installdir"
806	lappend info "hub" [exec hostname]
807	lappend info "client" "vtkstreamlinesviewer"
808	lappend info "user" $user
809	lappend info "session" $session
810	SendCmd "clientinfo [list $info]"
811	}
812
813	set w [winfo width $itk_component(view)]
814	set h [winfo height $itk_component(view)]
815	EventuallyResize $w $h
816	}
817	return $result
818	}
819
820	#
821	# isconnected --
822	#
823	# Indicates if we are currently connected to the visualization server.
824	#
825	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
826	return [VisViewer::IsConnected]
827	}
828
829	#
830	# disconnect --
831	#
832	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
833	Disconnect
834	set _reset 1
835	}
836
837	#
838	# Disconnect --
839	#
840	# Clients use this method to disconnect from the current rendering
841	# server.
842	#
843	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
844	VisViewer::Disconnect
845
846	$_dispatcher cancel !rebuild
847	$_dispatcher cancel !resize
848	$_dispatcher cancel !reseed
849	$_dispatcher cancel !rotate
850	$_dispatcher cancel !xcutplane
851	$_dispatcher cancel !ycutplane
852	$_dispatcher cancel !zcutplane
853	$_dispatcher cancel !legend
854	# disconnected -- no more data sitting on server
855	array unset _datasets
856	array unset _data
857	array unset _colormaps
858	array unset _seeds
859	array unset _dataset2style
860	array unset _obj2datasets
861	}
862
863	# ----------------------------------------------------------------------
864	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
865	#
866	# Invoked automatically whenever the "image" command comes in from
867	# the rendering server. Indicates that binary image data with the
868	# specified <size> will follow.
869	# ----------------------------------------------------------------------
870	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
871	array set info {
872	-token "???"
873	-bytes 0
874	-type image
875	}
876	array set info $args
877	set bytes [ReceiveBytes $info(-bytes)]
878	if { $info(-type) == "image" } {
879	if 0 {
880	set f [open "last.ppm" "w"]
881	puts $f $bytes
882	close $f
883	}
884	$_image(plot) configure -data $bytes
885	set time [clock seconds]
886	set date [clock format $time]
887	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
888	if { $_start > 0 } {
889	set finish [clock clicks -milliseconds]
890	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
891	set _start 0
892	}
893	} elseif { $info(type) == "print" } {
894	set tag $this-print-$info(-token)
895	set _hardcopy($tag) $bytes
896	}
897	if { $_legendPending } {
898	RequestLegend
899	}
900	}
901
902	#
903	# ReceiveDataset --
904	#
905	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
906	if { ![isconnected] } {
907	return
908	}
909	set option [lindex $args 0]
910	switch -- $option {
911	"scalar" {
912	set option [lindex $args 1]
913	switch -- $option {
914	"world" {
915	foreach { x y z value tag } [lrange $args 2 end] break
916	}
917	"pixel" {
918	foreach { x y value tag } [lrange $args 2 end] break
919	}
920	}
921	}
922	"vector" {
923	set option [lindex $args 1]
924	switch -- $option {
925	"world" {
926	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
927	}
928	"pixel" {
929	foreach { x y vx vy vz tag } [lrange $args 2 end] break
930	}
931	}
932	}
933	"names" {
934	foreach { name } [lindex $args 1] {
935	#puts stderr "Dataset: $name"
936	}
937	}
938	default {
939	error "unknown dataset option \"$option\" from server"
940	}
941	}
942	}
943
944	# ----------------------------------------------------------------------
945	# USAGE: Rebuild
946	#
947	# Called automatically whenever something changes that affects the
948	# data in the widget. Clears any existing data and rebuilds the
949	# widget to display new data.
950	# ----------------------------------------------------------------------
951	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
952	update
953	set w [winfo width $itk_component(view)]
954	set h [winfo height $itk_component(view)]
955	if { $w < 2 \|\| $h < 2 } {
956	$_dispatcher event -idle !rebuild
957	return
958	}
959
960	# Turn on buffering of commands to the server. We don't want to
961	# be preempted by a server disconnect/reconnect (which automatically
962	# generates a new call to Rebuild).
963	StartBufferingCommands
964	set _legendPending 1
965
966	set _first ""
967	if { $_reset } {
968	set _width $w
969	set _height $h
970	$_arcball resize $w $h
971	DoResize
972	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
973	axesVisible axisLabelsVisible axisMinorTicks
974	# This "imgflush" is to force an image returned before vtkvis starts
975	# reading a (big) dataset. This will display an empty plot with axes
976	# at the correct image size.
977	SendCmd "imgflush"
978	}
979
980	set _first ""
981	SendCmd "dataset visible 0"
982	foreach dataobj [get -objects] {
983	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
984	set _first $dataobj
985	}
986	set _obj2datasets($dataobj) ""
987	foreach comp [$dataobj components] {
988	set tag $dataobj-$comp
989	if { ![info exists _datasets($tag)] } {
990	set bytes [$dataobj vtkdata $comp]
991	set length [string length $bytes]
992	if 0 {
993	set f [open /tmp/vtkstreamlines.vtk "w"]
994	fconfigure $f -translation binary -encoding binary
995	puts $f $bytes
996	close $f
997	}
998	if { $_reportClientInfo } {
999	set info {}
1000	lappend info "tool_id" [$dataobj hints toolId]
1001	lappend info "tool_name" [$dataobj hints toolName]
1002	lappend info "tool_version" [$dataobj hints toolRevision]
1003	lappend info "tool_title" [$dataobj hints toolTitle]
1004	lappend info "dataset_label" [$dataobj hints label]
1005	lappend info "dataset_size" $length
1006	lappend info "dataset_tag" $tag
1007	SendCmd "clientinfo [list $info]"
1008	}
1009	SendCmd "dataset add $tag data follows $length"
1010	append _outbuf $bytes
1011	set _datasets($tag) 1
1012	SetObjectStyle $dataobj $comp
1013	}
1014	lappend _obj2datasets($dataobj) $tag
1015	if { [info exists _obj2ovride($dataobj-raise)] } {
1016	SendCmd "dataset visible 1 $tag"
1017	}
1018	}
1019	}
1020	if {"" != $_first} {
1021	set location [$_first hints camera]
1022	if { $location != "" } {
1023	array set view $location
1024	}
1025	foreach axis { x y z } {
1026	set label [$_first hints ${axis}label]
1027	if { $label != "" } {
1028	SendCmd [list axis name $axis $label]
1029	}
1030	set units [$_first hints ${axis}units]
1031	if { $units != "" } {
1032	SendCmd [list axis units $axis $units]
1033	}
1034	}
1035	$itk_component(field) choices delete 0 end
1036	$itk_component(fieldmenu) delete 0 end
1037	array unset _fields
1038	set _curFldName ""
1039	foreach cname [$_first components] {
1040	foreach fname [$_first fieldnames $cname] {
1041	if { [info exists _fields($fname)] } {
1042	continue
1043	}
1044	foreach { label units components } \
1045	[$_first fieldinfo $fname] break
1046	$itk_component(field) choices insert end "$fname" "$label"
1047	$itk_component(fieldmenu) add radiobutton -label "$label" \
1048	-value $label -variable [itcl::scope _curFldLabel] \
1049	-selectcolor red \
1050	-activebackground $itk_option(-plotbackground) \
1051	-activeforeground $itk_option(-plotforeground) \
1052	-font "Arial 8" \
1053	-command [itcl::code $this Combo invoke]
1054	set _fields($fname) [list $label $units $components]
1055	if { $_curFldName == "" } {
1056	set _curFldName $fname
1057	set _curFldLabel $label
1058	}
1059	}
1060	}
1061	$itk_component(field) value $_curFldLabel
1062	}
1063
1064	if { $_reset } {
1065	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1066	streamlinesVisible streamlinesColormap \
1067	streamlinesLighting \
1068	streamlinesColormap field \
1069	volumeVisible volumeEdges volumeLighting volumeOpacity \
1070	volumeWireframe \
1071	cutplaneVisible \
1072	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1073	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1074
1075	# Reset the camera and other view parameters
1076	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1077	$_arcball quaternion $q
1078	if {$_view(ortho)} {
1079	SendCmd "camera mode ortho"
1080	} else {
1081	SendCmd "camera mode persp"
1082	}
1083	DoRotate
1084	PanCamera
1085	Zoom reset
1086	SendCmd "camera reset"
1087	set _reset 0
1088	}
1089	# Actually write the commands to the server socket. If it fails, we don't
1090	# care. We're finished here.
1091	blt::busy hold $itk_component(hull)
1092	StopBufferingCommands
1093	blt::busy release $itk_component(hull)
1094	}
1095
1096	# ----------------------------------------------------------------------
1097	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1098	#
1099	# Returns a list of server IDs for the current datasets being displayed. This
1100	# is normally a single ID, but it might be a list of IDs if the current data
1101	# object has multiple components.
1102	# ----------------------------------------------------------------------
1103	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1104	set flag [lindex $args 0]
1105	switch -- $flag {
1106	"-all" {
1107	if { [llength $args] > 1 } {
1108	error "CurrentDatasets: can't specify dataobj after \"-all\""
1109	}
1110	set dlist [get -objects]
1111	}
1112	"-visible" {
1113	if { [llength $args] > 1 } {
1114	set dlist {}
1115	set args [lrange $args 1 end]
1116	foreach dataobj $args {
1117	if { [info exists _obj2ovride($dataobj-raise)] } {
1118	lappend dlist $dataobj
1119	}
1120	}
1121	} else {
1122	set dlist [get -visible]
1123	}
1124	}
1125	default {
1126	set dlist $args
1127	}
1128	}
1129	set rlist ""
1130	foreach dataobj $dlist {
1131	foreach comp [$dataobj components] {
1132	set tag $dataobj-$comp
1133	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1134	lappend rlist $tag
1135	}
1136	}
1137	}
1138	return $rlist
1139	}
1140
1141	# ----------------------------------------------------------------------
1142	# USAGE: Zoom in
1143	# USAGE: Zoom out
1144	# USAGE: Zoom reset
1145	#
1146	# Called automatically when the user clicks on one of the zoom
1147	# controls for this widget. Changes the zoom for the current view.
1148	# ----------------------------------------------------------------------
1149	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1150	switch -- $option {
1151	"in" {
1152	set _view(zoom) [expr {$_view(zoom)*1.25}]
1153	SendCmd "camera zoom $_view(zoom)"
1154	}
1155	"out" {
1156	set _view(zoom) [expr {$_view(zoom)*0.8}]
1157	SendCmd "camera zoom $_view(zoom)"
1158	}
1159	"reset" {
1160	array set _view {
1161	qw 0.853553
1162	qx -0.353553
1163	qy 0.353553
1164	qz 0.146447
1165	zoom 1.0
1166	xpan 0
1167	ypan 0
1168	}
1169	if { $_first != "" } {
1170	set location [$_first hints camera]
1171	if { $location != "" } {
1172	array set _view $location
1173	}
1174	}
1175	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1176	$_arcball quaternion $q
1177	DoRotate
1178	SendCmd "camera reset"
1179	}
1180	}
1181	}
1182
1183	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1184	set x $_view(xpan)
1185	set y $_view(ypan)
1186	SendCmd "camera pan $x $y"
1187	}
1188
1189
1190	# ----------------------------------------------------------------------
1191	# USAGE: Rotate click <x> <y>
1192	# USAGE: Rotate drag <x> <y>
1193	# USAGE: Rotate release <x> <y>
1194	#
1195	# Called automatically when the user clicks/drags/releases in the
1196	# plot area. Moves the plot according to the user's actions.
1197	# ----------------------------------------------------------------------
1198	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1199	switch -- $option {
1200	"click" {
1201	$itk_component(view) configure -cursor fleur
1202	set _click(x) $x
1203	set _click(y) $y
1204	}
1205	"drag" {
1206	if {[array size _click] == 0} {
1207	Rotate click $x $y
1208	} else {
1209	set w [winfo width $itk_component(view)]
1210	set h [winfo height $itk_component(view)]
1211	if {$w <= 0 \|\| $h <= 0} {
1212	return
1213	}
1214
1215	if {[catch {
1216	# this fails sometimes for no apparent reason
1217	set dx [expr {double($x-$_click(x))/$w}]
1218	set dy [expr {double($y-$_click(y))/$h}]
1219	}]} {
1220	return
1221	}
1222	if { $dx == 0 && $dy == 0 } {
1223	return
1224	}
1225	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1226	EventuallyRotate $q
1227	set _click(x) $x
1228	set _click(y) $y
1229	}
1230	}
1231	"release" {
1232	Rotate drag $x $y
1233	$itk_component(view) configure -cursor ""
1234	catch {unset _click}
1235	}
1236	default {
1237	error "bad option \"$option\": should be click, drag, release"
1238	}
1239	}
1240	}
1241
1242	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1243	foreach tag [CurrentDatasets -visible] {
1244	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1245	}
1246	}
1247
1248	# ----------------------------------------------------------------------
1249	# USAGE: $this Pan click x y
1250	# $this Pan drag x y
1251	# $this Pan release x y
1252	#
1253	# Called automatically when the user clicks on one of the zoom
1254	# controls for this widget. Changes the zoom for the current view.
1255	# ----------------------------------------------------------------------
1256	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1257	switch -- $option {
1258	"set" {
1259	set w [winfo width $itk_component(view)]
1260	set h [winfo height $itk_component(view)]
1261	set x [expr $x / double($w)]
1262	set y [expr $y / double($h)]
1263	set _view(xpan) [expr $_view(xpan) + $x]
1264	set _view(ypan) [expr $_view(ypan) + $y]
1265	PanCamera
1266	return
1267	}
1268	"click" {
1269	set _click(x) $x
1270	set _click(y) $y
1271	$itk_component(view) configure -cursor hand1
1272	}
1273	"drag" {
1274	if { ![info exists _click(x)] } {
1275	set _click(x) $x
1276	}
1277	if { ![info exists _click(y)] } {
1278	set _click(y) $y
1279	}
1280	set w [winfo width $itk_component(view)]
1281	set h [winfo height $itk_component(view)]
1282	set dx [expr ($_click(x) - $x)/double($w)]
1283	set dy [expr ($_click(y) - $y)/double($h)]
1284	set _click(x) $x
1285	set _click(y) $y
1286	set _view(xpan) [expr $_view(xpan) - $dx]
1287	set _view(ypan) [expr $_view(ypan) - $dy]
1288	PanCamera
1289	}
1290	"release" {
1291	Pan drag $x $y
1292	$itk_component(view) configure -cursor ""
1293	}
1294	default {
1295	error "unknown option \"$option\": should set, click, drag, or release"
1296	}
1297	}
1298	}
1299
1300	# ----------------------------------------------------------------------
1301	# USAGE: InitSettings <what> ?<value>?
1302	#
1303	# Used internally to update rendering settings whenever parameters
1304	# change in the popup settings panel. Sends the new settings off
1305	# to the back end.
1306	# ----------------------------------------------------------------------
1307	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1308	foreach spec $args {
1309	if { [info exists _settings($_first-$spec)] } {
1310	# Reset global setting with dataobj specific setting
1311	set _settings($spec) $_settings($_first-$spec)
1312	}
1313	AdjustSetting $spec
1314	}
1315	}
1316
1317	#
1318	# AdjustSetting --
1319	#
1320	# Changes/updates a specific setting in the widget. There are
1321	# usually user-setable option. Commands are sent to the render
1322	# server.
1323	#
1324	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1325	if { ![isconnected] } {
1326	return
1327	}
1328	switch -- $what {
1329	"volumeOpacity" {
1330	set val $_settings($what)
1331	set sval [expr { 0.01 * double($val) }]
1332	SendCmd "polydata opacity $sval"
1333	}
1334	"volumeWireframe" {
1335	set bool $_settings($what)
1336	SendCmd "polydata wireframe $bool"
1337	}
1338	"volumeVisible" {
1339	set bool $_settings($what)
1340	SendCmd "polydata visible $bool"
1341	if { $bool } {
1342	Rappture::Tooltip::for $itk_component(volume) \
1343	"Hide the volume"
1344	} else {
1345	Rappture::Tooltip::for $itk_component(volume) \
1346	"Show the volume"
1347	}
1348	}
1349	"volumeLighting" {
1350	set bool $_settings($what)
1351	SendCmd "polydata lighting $bool"
1352	}
1353	"volumeEdges" {
1354	set bool $_settings($what)
1355	SendCmd "polydata edges $bool"
1356	}
1357	"axesVisible" {
1358	set bool $_settings($what)
1359	SendCmd "axis visible all $bool"
1360	}
1361	"axisLabelsVisible" {
1362	set bool $_settings($what)
1363	SendCmd "axis labels all $bool"
1364	}
1365	"axisMinorTicks" {
1366	set bool $_settings($what)
1367	SendCmd "axis minticks all $bool"
1368	}
1369	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1370	set axis [string tolower [string range $what 4 4]]
1371	set bool $_settings($what)
1372	SendCmd "axis grid $axis $bool"
1373	}
1374	"axis-mode" {
1375	set mode [$itk_component(axismode) value]
1376	set mode [$itk_component(axismode) translate $mode]
1377	set _settings($what) $mode
1378	SendCmd "axis flymode $mode"
1379	}
1380	"cutplaneEdges" {
1381	set bool $_settings($what)
1382	SendCmd "cutplane edges $bool"
1383	}
1384	"cutplaneVisible" {
1385	set bool $_settings($what)
1386	SendCmd "cutplane visible $bool"
1387	}
1388	"cutplaneWireframe" {
1389	set bool $_settings($what)
1390	SendCmd "cutplane wireframe $bool"
1391	}
1392	"cutplaneLighting" {
1393	set bool $_settings($what)
1394	SendCmd "cutplane lighting $bool"
1395	}
1396	"cutplaneOpacity" {
1397	set val $_settings($what)
1398	set sval [expr { 0.01 * double($val) }]
1399	SendCmd "cutplane opacity $sval"
1400	}
1401	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1402	set axis [string tolower [string range $what 8 8]]
1403	set bool $_settings($what)
1404	if { $bool } {
1405	$itk_component(${axis}CutScale) configure -state normal \
1406	-troughcolor white
1407	} else {
1408	$itk_component(${axis}CutScale) configure -state disabled \
1409	-troughcolor grey82
1410	}
1411	SendCmd "cutplane axis $axis $bool"
1412	}
1413	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1414	set axis [string tolower [string range $what 8 8]]
1415	set pos [expr $_settings($what) * 0.01]
1416	SendCmd "cutplane slice ${axis} ${pos}"
1417	set _cutplanePending 0
1418	}
1419	"streamlinesSeedsVisible" {
1420	set bool $_settings($what)
1421	SendCmd "streamlines seed visible $bool"
1422	}
1423	"streamlinesNumSeeds" {
1424	set density $_settings($what)
1425	EventuallyReseed $density
1426	}
1427	"streamlinesVisible" {
1428	set bool $_settings($what)
1429	SendCmd "streamlines visible $bool"
1430	if { $bool } {
1431	Rappture::Tooltip::for $itk_component(streamlines) \
1432	"Hide the streamlines"
1433	} else {
1434	Rappture::Tooltip::for $itk_component(streamlines) \
1435	"Show the streamlines"
1436	}
1437	}
1438	"streamlinesMode" {
1439	set mode [$itk_component(streammode) value]
1440	set _settings(streamlinesMode) $mode
1441	switch -- $mode {
1442	"lines" {
1443	SendCmd "streamlines lines"
1444	}
1445	"ribbons" {
1446	SendCmd "streamlines ribbons 3 0"
1447	}
1448	"tubes" {
1449	SendCmd "streamlines tubes 5 3"
1450	}
1451	}
1452	}
1453	"streamlinesColormap" {
1454	set colormap [$itk_component(colormap) value]
1455	set _settings(streamlinesColormap) $colormap
1456	foreach dataset [CurrentDatasets -visible $_first] {
1457	foreach {dataobj comp} [split $dataset -] break
1458	ChangeColormap $dataobj $comp $colormap
1459	}
1460	set _legendPending 1
1461	}
1462	"streamlinesOpacity" {
1463	set val $_settings($what)
1464	set sval [expr { 0.01 * double($val) }]
1465	SendCmd "streamlines opacity $sval"
1466	}
1467	"streamlinesScale" {
1468	set val $_settings($what)
1469	set sval [expr { 0.01 * double($val) }]
1470	SendCmd "streamlines scale $sval $sval $sval"
1471	}
1472	"streamlinesLighting" {
1473	set bool $_settings($what)
1474	SendCmd "streamlines lighting $bool"
1475	}
1476	"field" {
1477	set label [$itk_component(field) value]
1478	set fname [$itk_component(field) translate $label]
1479	set _settings(field) $fname
1480	if { [info exists _fields($fname)] } {
1481	foreach { label units components } $_fields($fname) break
1482	if { $components > 1 } {
1483	set _colorMode vmag
1484	} else {
1485	set _colorMode scalar
1486	}
1487	set _curFldName $fname
1488	set _curFldLabel $label
1489	} else {
1490	puts stderr "unknown field \"$fname\""
1491	return
1492	}
1493	# Get the new limits because the field changed.
1494	if { ![info exists _limits($_curFldName)] } {
1495	SendCmd "dataset maprange all"
1496	} else {
1497	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1498	}
1499	SendCmd "streamlines colormode $_colorMode $_curFldName"
1500	SendCmd "cutplane colormode $_colorMode $_curFldName"
1501	DrawLegend
1502	}
1503	default {
1504	error "don't know how to fix $what"
1505	}
1506	}
1507	}
1508
1509	#
1510	# RequestLegend --
1511	#
1512	# Request a new legend from the server. The size of the legend
1513	# is determined from the height of the canvas. It will be rotated
1514	# to be vertical when drawn.
1515	#
1516	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1517	set font "Arial 8"
1518	set lineht [font metrics $font -linespace]
1519	set w 12
1520	set h [expr {$_height - 3 * ($lineht + 2)}]
1521	if { $h < 1 } {
1522	return
1523	}
1524	# Set the legend on the first streamlines dataset.
1525	foreach dataset [CurrentDatasets -visible $_first] {
1526	foreach {dataobj comp} [split $dataset -] break
1527	if { [info exists _dataset2style($dataset)] } {
1528	SendCmdNoWait \
1529	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1530	break;
1531	}
1532	}
1533	}
1534
1535	#
1536	# ChangeColormap --
1537	#
1538	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1539	set tag $dataobj-$comp
1540	if { ![info exist _style($tag)] } {
1541	error "no initial colormap"
1542	}
1543	array set style $_style($tag)
1544	set style(-color) $color
1545	set _style($tag) [array get style]
1546	SetColormap $dataobj $comp
1547	}
1548
1549	#
1550	# SetColormap --
1551	#
1552	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1553	array set style {
1554	-color BCGYR
1555	-levels 6
1556	-opacity 1.0
1557	}
1558	set tag $dataobj-$comp
1559	if { ![info exists _initialStyle($tag)] } {
1560	# Save the initial component style.
1561	set _initialStyle($tag) [$dataobj style $comp]
1562	}
1563
1564	# Override defaults with initial style defined in xml.
1565	array set style $_initialStyle($tag)
1566
1567	if { ![info exists _style($tag)] } {
1568	set _style($tag) [array get style]
1569	}
1570	# Override initial style with current style.
1571	array set style $_style($tag)
1572
1573	set name "$style(-color):$style(-levels):$style(-opacity)"
1574	if { ![info exists _colormaps($name)] } {
1575	BuildColormap $name [array get style]
1576	set _colormaps($name) 1
1577	}
1578	if { ![info exists _dataset2style($tag)] \|\|
1579	$_dataset2style($tag) != $name } {
1580	SendCmd "streamlines colormap $name $tag"
1581	SendCmd "cutplane colormap $name $tag"
1582	set _dataset2style($tag) $name
1583	}
1584	}
1585
1586
1587	#
1588	# BuildColormap --
1589	#
1590	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1591	array set style $styles
1592	set cmap [ColorsToColormap $style(-color)]
1593	if { [llength $cmap] == 0 } {
1594	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1595	}
1596	if { ![info exists _settings(volumeOpacity)] } {
1597	set _settings(volumeOpacity) $style(-opacity)
1598	}
1599	set max $_settings(volumeOpacity)
1600
1601	set wmap "0.0 1.0 1.0 1.0"
1602	SendCmd "colormap add $name { $cmap } { $wmap }"
1603	}
1604
1605	# ----------------------------------------------------------------------
1606	# CONFIGURATION OPTION: -plotbackground
1607	# ----------------------------------------------------------------------
1608	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1609	if { [isconnected] } {
1610	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1611	SendCmd "screen bgcolor $r $g $b"
1612	}
1613	}
1614
1615	# ----------------------------------------------------------------------
1616	# CONFIGURATION OPTION: -plotforeground
1617	# ----------------------------------------------------------------------
1618	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1619	if { [isconnected] } {
1620	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1621	#fix this!
1622	#SendCmd "color background $r $g $b"
1623	}
1624	}
1625
1626	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1627
1628	set fg [option get $itk_component(hull) font Font]
1629	#set bfg [option get $itk_component(hull) boldFont Font]
1630
1631	set inner [$itk_component(main) insert end \
1632	-title "Volume Settings" \
1633	-icon [Rappture::icon volume-on]]
1634	$inner configure -borderwidth 4
1635
1636	checkbutton $inner.volume \
1637	-text "Show Volume" \
1638	-variable [itcl::scope _settings(volumeVisible)] \
1639	-command [itcl::code $this AdjustSetting volumeVisible] \
1640	-font "Arial 9"
1641
1642	checkbutton $inner.wireframe \
1643	-text "Show Wireframe" \
1644	-variable [itcl::scope _settings(volumeWireframe)] \
1645	-command [itcl::code $this AdjustSetting volumeWireframe] \
1646	-font "Arial 9"
1647
1648	checkbutton $inner.lighting \
1649	-text "Enable Lighting" \
1650	-variable [itcl::scope _settings(volumeLighting)] \
1651	-command [itcl::code $this AdjustSetting volumeLighting] \
1652	-font "Arial 9"
1653
1654	checkbutton $inner.edges \
1655	-text "Show Edges" \
1656	-variable [itcl::scope _settings(volumeEdges)] \
1657	-command [itcl::code $this AdjustSetting volumeEdges] \
1658	-font "Arial 9"
1659
1660	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1661	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1662	-variable [itcl::scope _settings(volumeOpacity)] \
1663	-width 10 \
1664	-showvalue off \
1665	-command [itcl::code $this AdjustSetting volumeOpacity]
1666
1667	blt::table $inner \
1668	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1669	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1670	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1671	3,0 $inner.opacity_l -anchor w -pady 2 \
1672	3,1 $inner.opacity -fill x -pady 2
1673
1674	blt::table configure $inner r* c* -resize none
1675	blt::table configure $inner r4 c1 -resize expand
1676	}
1677
1678
1679	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1680
1681	set fg [option get $itk_component(hull) font Font]
1682	#set bfg [option get $itk_component(hull) boldFont Font]
1683
1684	set inner [$itk_component(main) insert end \
1685	-title "Streams Settings" \
1686	-icon [Rappture::icon streamlines-on]]
1687	$inner configure -borderwidth 4
1688
1689	checkbutton $inner.streamlines \
1690	-text "Show Streamlines" \
1691	-variable [itcl::scope _settings(streamlinesVisible)] \
1692	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1693	-font "Arial 9"
1694
1695	checkbutton $inner.lighting \
1696	-text "Enable Lighting" \
1697	-variable [itcl::scope _settings(streamlinesLighting)] \
1698	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1699	-font "Arial 9"
1700
1701	checkbutton $inner.seeds \
1702	-text "Show Seeds" \
1703	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1704	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1705	-font "Arial 9"
1706
1707	label $inner.mode_l -text "Mode" -font "Arial 9"
1708	itk_component add streammode {
1709	Rappture::Combobox $inner.mode -width 10 -editable no
1710	}
1711	$inner.mode choices insert end \
1712	"lines" "lines" \
1713	"ribbons" "ribbons" \
1714	"tubes" "tubes"
1715	$itk_component(streammode) value $_settings(streamlinesMode)
1716	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1717
1718	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1719	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1720	-variable [itcl::scope _settings(streamlinesOpacity)] \
1721	-width 10 \
1722	-showvalue off \
1723	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1724
1725	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1726	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1727	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1728	-width 10 \
1729	-showvalue on \
1730	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1731
1732	label $inner.scale_l -text "Scale" -font "Arial 9"
1733	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1734	-variable [itcl::scope _settings(streamlinesScale)] \
1735	-width 10 \
1736	-showvalue off \
1737	-command [itcl::code $this AdjustSetting streamlinesScale]
1738
1739	label $inner.field_l -text "Color by" -font "Arial 9"
1740	itk_component add field {
1741	Rappture::Combobox $inner.field -width 10 -editable no
1742	}
1743	bind $inner.field <<Value>> \
1744	[itcl::code $this AdjustSetting field]
1745
1746	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1747	itk_component add colormap {
1748	Rappture::Combobox $inner.colormap -width 10 -editable no
1749	}
1750	$inner.colormap choices insert end [GetColormapList]
1751
1752	$itk_component(colormap) value "BCGYR"
1753	bind $inner.colormap <<Value>> \
1754	[itcl::code $this AdjustSetting streamlinesColormap]
1755
1756	blt::table $inner \
1757	0,0 $inner.field_l -anchor w -pady 2 \
1758	0,1 $inner.field -fill x -pady 2 \
1759	1,0 $inner.colormap_l -anchor w -pady 2 \
1760	1,1 $inner.colormap -fill x -pady 2 \
1761	2,0 $inner.mode_l -anchor w -pady 2 \
1762	2,1 $inner.mode -fill x -pady 2 \
1763	3,0 $inner.opacity_l -anchor w -pady 2 \
1764	3,1 $inner.opacity -fill x -pady 2 \
1765	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1766	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1767	7,0 $inner.density_l -anchor w -pady 2 \
1768	7,1 $inner.density -fill x -pady 2 \
1769
1770	blt::table configure $inner r* c* -resize none
1771	blt::table configure $inner r10 c1 c2 -resize expand
1772	}
1773
1774	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1775
1776	set fg [option get $itk_component(hull) font Font]
1777	#set bfg [option get $itk_component(hull) boldFont Font]
1778
1779	set inner [$itk_component(main) insert end \
1780	-title "Axis Settings" \
1781	-icon [Rappture::icon axis2]]
1782	$inner configure -borderwidth 4
1783
1784	checkbutton $inner.visible \
1785	-text "Axes" \
1786	-variable [itcl::scope _settings(axesVisible)] \
1787	-command [itcl::code $this AdjustSetting axesVisible] \
1788	-font "Arial 9"
1789
1790	checkbutton $inner.labels \
1791	-text "Axis Labels" \
1792	-variable [itcl::scope _settings(axisLabelsVisible)] \
1793	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1794	-font "Arial 9"
1795	label $inner.grid_l -text "Grid" -font "Arial 9"
1796	checkbutton $inner.xgrid \
1797	-text "X" \
1798	-variable [itcl::scope _settings(axisXGrid)] \
1799	-command [itcl::code $this AdjustSetting axisXGrid] \
1800	-font "Arial 9"
1801	checkbutton $inner.ygrid \
1802	-text "Y" \
1803	-variable [itcl::scope _settings(axisYGrid)] \
1804	-command [itcl::code $this AdjustSetting axisYGrid] \
1805	-font "Arial 9"
1806	checkbutton $inner.zgrid \
1807	-text "Z" \
1808	-variable [itcl::scope _settings(axisZGrid)] \
1809	-command [itcl::code $this AdjustSetting axisZGrid] \
1810	-font "Arial 9"
1811	checkbutton $inner.minorticks \
1812	-text "Minor Ticks" \
1813	-variable [itcl::scope _settings(axisMinorTicks)] \
1814	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1815	-font "Arial 9"
1816
1817	label $inner.mode_l -text "Mode" -font "Arial 9"
1818
1819	itk_component add axismode {
1820	Rappture::Combobox $inner.mode -width 10 -editable no
1821	}
1822	$inner.mode choices insert end \
1823	"static_triad" "static" \
1824	"closest_triad" "closest" \
1825	"furthest_triad" "farthest" \
1826	"outer_edges" "outer"
1827	$itk_component(axismode) value "static"
1828	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1829
1830	blt::table $inner \
1831	0,0 $inner.visible -anchor w -cspan 4 \
1832	1,0 $inner.labels -anchor w -cspan 4 \
1833	2,0 $inner.minorticks -anchor w -cspan 4 \
1834	4,0 $inner.grid_l -anchor w \
1835	4,1 $inner.xgrid -anchor w \
1836	4,2 $inner.ygrid -anchor w \
1837	4,3 $inner.zgrid -anchor w \
1838	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1839	5,1 $inner.mode -fill x -cspan 3
1840
1841	blt::table configure $inner r* c* -resize none
1842	blt::table configure $inner r7 c6 -resize expand
1843	blt::table configure $inner r3 -height 0.125i
1844	}
1845
1846	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1847	set inner [$itk_component(main) insert end \
1848	-title "Camera Settings" \
1849	-icon [Rappture::icon camera]]
1850	$inner configure -borderwidth 4
1851
1852	label $inner.view_l -text "view" -font "Arial 9"
1853	set f [frame $inner.view]
1854	foreach side { front back left right top bottom } {
1855	button $f.$side -image [Rappture::icon view$side] \
1856	-command [itcl::code $this SetOrientation $side]
1857	Rappture::Tooltip::for $f.$side "Change the view to $side"
1858	pack $f.$side -side left
1859	}
1860
1861	blt::table $inner \
1862	0,0 $inner.view_l -anchor e -pady 2 \
1863	0,1 $inner.view -anchor w -pady 2
1864
1865	set labels { qx qy qz qw xpan ypan zoom }
1866	set row 1
1867	foreach tag $labels {
1868	label $inner.${tag}label -text $tag -font "Arial 9"
1869	entry $inner.${tag} -font "Arial 9" -bg white \
1870	-textvariable [itcl::scope _view($tag)]
1871	bind $inner.${tag} <KeyPress-Return> \
1872	[itcl::code $this camera set ${tag}]
1873	blt::table $inner \
1874	$row,0 $inner.${tag}label -anchor e -pady 2 \
1875	$row,1 $inner.${tag} -anchor w -pady 2
1876	blt::table configure $inner r$row -resize none
1877	incr row
1878	}
1879	checkbutton $inner.ortho \
1880	-text "Orthographic Projection" \
1881	-variable [itcl::scope _view(ortho)] \
1882	-command [itcl::code $this camera set ortho] \
1883	-font "Arial 9"
1884	blt::table $inner \
1885	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1886	blt::table configure $inner r$row -resize none
1887	incr row
1888
1889	blt::table configure $inner c* r* -resize none
1890	blt::table configure $inner c2 -resize expand
1891	blt::table configure $inner r$row -resize expand
1892	}
1893
1894	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1895
1896	set fg [option get $itk_component(hull) font Font]
1897
1898	set inner [$itk_component(main) insert end \
1899	-title "Cutplane Settings" \
1900	-icon [Rappture::icon cutbutton]]
1901
1902	$inner configure -borderwidth 4
1903
1904	checkbutton $inner.visible \
1905	-text "Show Cutplanes" \
1906	-variable [itcl::scope _settings(cutplaneVisible)] \
1907	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1908	-font "Arial 9"
1909
1910	checkbutton $inner.wireframe \
1911	-text "Show Wireframe" \
1912	-variable [itcl::scope _settings(cutplaneWireframe)] \
1913	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1914	-font "Arial 9"
1915
1916	checkbutton $inner.lighting \
1917	-text "Enable Lighting" \
1918	-variable [itcl::scope _settings(cutplaneLighting)] \
1919	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1920	-font "Arial 9"
1921
1922	checkbutton $inner.edges \
1923	-text "Show Edges" \
1924	-variable [itcl::scope _settings(cutplaneEdges)] \
1925	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1926	-font "Arial 9"
1927
1928	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1929	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1930	-variable [itcl::scope _settings(cutplaneOpacity)] \
1931	-width 10 \
1932	-showvalue off \
1933	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1934	$inner.opacity set $_settings(cutplaneOpacity)
1935
1936	# X-value slicer...
1937	itk_component add xCutButton {
1938	Rappture::PushButton $inner.xbutton \
1939	-onimage [Rappture::icon x-cutplane-red] \
1940	-offimage [Rappture::icon x-cutplane-red] \
1941	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1942	-variable [itcl::scope _settings(cutplaneXVisible)]
1943	}
1944	Rappture::Tooltip::for $itk_component(xCutButton) \
1945	"Toggle the X-axis cutplane on/off"
1946	$itk_component(xCutButton) select
1947
1948	itk_component add xCutScale {
1949	::scale $inner.xval -from 100 -to 0 \
1950	-width 10 -orient vertical -showvalue yes \
1951	-borderwidth 1 -highlightthickness 0 \
1952	-command [itcl::code $this EventuallySetCutplane x] \
1953	-variable [itcl::scope _settings(cutplaneXPosition)] \
1954	-foreground red3 -font "Arial 9 bold"
1955	} {
1956	usual
1957	ignore -borderwidth -highlightthickness -foreground -font
1958	}
1959	# Set the default cutplane value before disabling the scale.
1960	$itk_component(xCutScale) set 50
1961	$itk_component(xCutScale) configure -state disabled
1962	Rappture::Tooltip::for $itk_component(xCutScale) \
1963	"@[itcl::code $this Slice tooltip x]"
1964
1965	# Y-value slicer...
1966	itk_component add yCutButton {
1967	Rappture::PushButton $inner.ybutton \
1968	-onimage [Rappture::icon y-cutplane-green] \
1969	-offimage [Rappture::icon y-cutplane-green] \
1970	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1971	-variable [itcl::scope _settings(cutplaneYVisible)]
1972	}
1973	Rappture::Tooltip::for $itk_component(yCutButton) \
1974	"Toggle the Y-axis cutplane on/off"
1975	$itk_component(yCutButton) select
1976
1977	itk_component add yCutScale {
1978	::scale $inner.yval -from 100 -to 0 \
1979	-width 10 -orient vertical -showvalue yes \
1980	-borderwidth 1 -highlightthickness 0 \
1981	-command [itcl::code $this EventuallySetCutplane y] \
1982	-variable [itcl::scope _settings(cutplaneYPosition)] \
1983	-foreground green3 -font "Arial 9 bold"
1984	} {
1985	usual
1986	ignore -borderwidth -highlightthickness -foreground -font
1987	}
1988	Rappture::Tooltip::for $itk_component(yCutScale) \
1989	"@[itcl::code $this Slice tooltip y]"
1990	# Set the default cutplane value before disabling the scale.
1991	$itk_component(yCutScale) set 50
1992	$itk_component(yCutScale) configure -state disabled
1993
1994	# Z-value slicer...
1995	itk_component add zCutButton {
1996	Rappture::PushButton $inner.zbutton \
1997	-onimage [Rappture::icon z-cutplane-blue] \
1998	-offimage [Rappture::icon z-cutplane-blue] \
1999	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
2000	-variable [itcl::scope _settings(cutplaneZVisible)]
2001	}
2002	Rappture::Tooltip::for $itk_component(zCutButton) \
2003	"Toggle the Z-axis cutplane on/off"
2004	$itk_component(zCutButton) select
2005
2006	itk_component add zCutScale {
2007	::scale $inner.zval -from 100 -to 0 \
2008	-width 10 -orient vertical -showvalue yes \
2009	-borderwidth 1 -highlightthickness 0 \
2010	-command [itcl::code $this EventuallySetCutplane z] \
2011	-variable [itcl::scope _settings(cutplaneZPosition)] \
2012	-foreground blue3 -font "Arial 9 bold"
2013	} {
2014	usual
2015	ignore -borderwidth -highlightthickness -foreground -font
2016	}
2017	$itk_component(zCutScale) set 50
2018	$itk_component(zCutScale) configure -state disabled
2019	Rappture::Tooltip::for $itk_component(zCutScale) \
2020	"@[itcl::code $this Slice tooltip z]"
2021
2022	blt::table $inner \
2023	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2024	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2025	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2026	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2027	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2028	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2029	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2030	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2031	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2032	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2033	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2034
2035	blt::table configure $inner r* c* -resize none
2036	blt::table configure $inner r7 c4 -resize expand
2037	}
2038
2039	#
2040	# camera --
2041	#
2042	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2043	switch -- $option {
2044	"show" {
2045	puts [array get _view]
2046	}
2047	"set" {
2048	set who [lindex $args 0]
2049	set x $_view($who)
2050	set code [catch { string is double $x } result]
2051	if { $code != 0 \|\| !$result } {
2052	return
2053	}
2054	switch -- $who {
2055	"ortho" {
2056	if {$_view(ortho)} {
2057	SendCmd "camera mode ortho"
2058	} else {
2059	SendCmd "camera mode persp"
2060	}
2061	}
2062	"xpan" - "ypan" {
2063	PanCamera
2064	}
2065	"qx" - "qy" - "qz" - "qw" {
2066	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2067	$_arcball quaternion $q
2068	EventuallyRotate $q
2069	}
2070	"zoom" {
2071	SendCmd "camera zoom $_view(zoom)"
2072	}
2073	}
2074	}
2075	}
2076	}
2077
2078	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2079	set bytes ""
2080	foreach dataobj [get] {
2081	foreach comp [$dataobj components] {
2082	set tag $dataobj-$comp
2083	set contents [$dataobj vtkdata $comp]
2084	append bytes "$contents\n"
2085	}
2086	}
2087	return [list .vtk $bytes]
2088	}
2089
2090	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2091	if { [image width $_image(download)] > 0 &&
2092	[image height $_image(download)] > 0 } {
2093	set bytes [$_image(download) data -format "jpeg -quality 100"]
2094	set bytes [Rappture::encoding::decode -as b64 $bytes]
2095	return [list .jpg $bytes]
2096	}
2097	return ""
2098	}
2099
2100	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2101	Rappture::Balloon $popup \
2102	-title "[Rappture::filexfer::label downloadWord] as..."
2103	set inner [$popup component inner]
2104	label $inner.summary -text "" -anchor w
2105	radiobutton $inner.vtk_button -text "VTK data file" \
2106	-variable [itcl::scope _downloadPopup(format)] \
2107	-font "Helvetica 9 " \
2108	-value vtk
2109	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2110	radiobutton $inner.image_button -text "Image File" \
2111	-variable [itcl::scope _downloadPopup(format)] \
2112	-value image
2113	Rappture::Tooltip::for $inner.image_button \
2114	"Save as digital image."
2115
2116	button $inner.ok -text "Save" \
2117	-highlightthickness 0 -pady 2 -padx 3 \
2118	-command $command \
2119	-compound left \
2120	-image [Rappture::icon download]
2121
2122	button $inner.cancel -text "Cancel" \
2123	-highlightthickness 0 -pady 2 -padx 3 \
2124	-command [list $popup deactivate] \
2125	-compound left \
2126	-image [Rappture::icon cancel]
2127
2128	blt::table $inner \
2129	0,0 $inner.summary -cspan 2 \
2130	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2131	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2132	4,1 $inner.cancel -width .9i -fill y \
2133	4,0 $inner.ok -padx 2 -width .9i -fill y
2134	blt::table configure $inner r3 -height 4
2135	blt::table configure $inner r4 -pady 4
2136	raise $inner.image_button
2137	$inner.vtk_button invoke
2138	return $inner
2139	}
2140
2141	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2142	# Parse style string.
2143	set tag $dataobj-$comp
2144	set style [$dataobj style $comp]
2145	array set settings {
2146	-color \#808080
2147	-edges 0
2148	-edgecolor black
2149	-linewidth 1.0
2150	-opacity 0.4
2151	-wireframe 0
2152	-lighting 1
2153	-seeds 1
2154	-seedcolor white
2155	-visible 1
2156	}
2157	if { $dataobj != $_first } {
2158	set settings(-opacity) 1
2159	}
2160	array set settings $style
2161	StartBufferingCommands
2162	SendCmd "streamlines add $tag"
2163	SendCmd "streamlines seed visible off $tag"
2164	set seeds [$dataobj hints seeds]
2165	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2166	set length [string length $seeds]
2167	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2168	append _outbuf $seeds
2169	set _seeds($dataobj) 1
2170	}
2171	SendCmd "cutplane add $tag"
2172	SendCmd "polydata add $tag"
2173	SendCmd "polydata colormode constant {} $tag"
2174	set _settings(volumeEdges) $settings(-edges)
2175	set _settings(volumeLighting) $settings(-lighting)
2176	set _settings(volumeOpacity) $settings(-opacity)
2177	set _settings(volumeWireframe) $settings(-wireframe)
2178	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2179	StopBufferingCommands
2180	SetColormap $dataobj $comp
2181	}
2182
2183	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2184	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2185	return 0
2186	}
2187	return 1
2188	}
2189
2190	# ----------------------------------------------------------------------
2191	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2192	#
2193	# Invoked automatically whenever the "legend" command comes in from
2194	# the rendering server. Indicates that binary image data with the
2195	# specified <size> will follow.
2196	# ----------------------------------------------------------------------
2197	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2198	set _legendPending 0
2199	set _title $title
2200	regsub {\(mag\)} $title "" _title
2201	if { [IsConnected] } {
2202	set bytes [ReceiveBytes $size]
2203	if { ![info exists _image(legend)] } {
2204	set _image(legend) [image create photo]
2205	}
2206	$_image(legend) configure -data $bytes
2207	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2208	if { [catch {DrawLegend} errs] != 0 } {
2209	puts stderr errs=$errs
2210	}
2211	}
2212	}
2213
2214	#
2215	# DrawLegend --
2216	#
2217	# Draws the legend in it's own canvas which resides to the right
2218	# of the contour plot area.
2219	#
2220	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2221	set fname $_curFldName
2222	set c $itk_component(view)
2223	set w [winfo width $c]
2224	set h [winfo height $c]
2225	set font "Arial 8"
2226	set lineht [font metrics $font -linespace]
2227
2228	if { [info exists _fields($fname)] } {
2229	foreach { title units } $_fields($fname) break
2230	if { $units != "" } {
2231	set title [format "%s (%s)" $title $units]
2232	}
2233	} else {
2234	set title $fname
2235	}
2236	if { $_settings(legendVisible) } {
2237	set x [expr $w - 2]
2238	if { [$c find withtag "legend"] == "" } {
2239	set y 2
2240	$c create text $x $y \
2241	-anchor ne \
2242	-fill $itk_option(-plotforeground) -tags "title legend" \
2243	-font $font
2244	incr y $lineht
2245	$c create text $x $y \
2246	-anchor ne \
2247	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2248	-font $font
2249	incr y $lineht
2250	$c create image $x $y \
2251	-anchor ne \
2252	-image $_image(legend) -tags "colormap legend"
2253	$c create text $x [expr {$h-2}] \
2254	-anchor se \
2255	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2256	-font $font
2257	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2258	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2259	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2260	}
2261	$c bind title <ButtonPress> [itcl::code $this Combo post]
2262	$c bind title <Enter> [itcl::code $this Combo activate]
2263	$c bind title <Leave> [itcl::code $this Combo deactivate]
2264	# Reset the item coordinates according the current size of the plot.
2265	$c itemconfigure title -text $title
2266	if { [info exists _limits($_curFldName)] } {
2267	foreach {vmin vmax} $_limits($_curFldName) break
2268	$c itemconfigure vmin -text [format %g $vmin]
2269	$c itemconfigure vmax -text [format %g $vmax]
2270	}
2271	set y 2
2272	$c coords title $x $y
2273	incr y $lineht
2274	$c coords vmax $x $y
2275	incr y $lineht
2276	$c coords colormap $x $y
2277	$c coords vmin $x [expr {$h - 2}]
2278	}
2279	}
2280
2281	#
2282	# EnterLegend --
2283	#
2284	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2285	SetLegendTip $x $y
2286	}
2287
2288	#
2289	# MotionLegend --
2290	#
2291	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2292	Rappture::Tooltip::tooltip cancel
2293	set c $itk_component(view)
2294	SetLegendTip $x $y
2295	}
2296
2297	#
2298	# LeaveLegend --
2299	#
2300	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2301	Rappture::Tooltip::tooltip cancel
2302	.rappturetooltip configure -icon ""
2303	}
2304
2305	#
2306	# SetLegendTip --
2307	#
2308	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2309	set c $itk_component(view)
2310	set w [winfo width $c]
2311	set h [winfo height $c]
2312	set font "Arial 8"
2313	set lineht [font metrics $font -linespace]
2314
2315	set imgHeight [image height $_image(legend)]
2316	set coords [$c coords colormap]
2317	set imgX [expr $w - [image width $_image(legend)] - 2]
2318	set imgY [expr $y - 2 * ($lineht + 2)]
2319
2320	if { [info exists _fields($_title)] } {
2321	foreach { title units } $_fields($_title) break
2322	if { $units != "" } {
2323	set title [format "%s (%s)" $title $units]
2324	}
2325	} else {
2326	set title $_title
2327	}
2328	# Make a swatch of the selected color
2329	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2330	#puts stderr "out of range: $imgY"
2331	return
2332	}
2333	if { ![info exists _image(swatch)] } {
2334	set _image(swatch) [image create photo -width 24 -height 24]
2335	}
2336	set color [eval format "\#%02x%02x%02x" $pixel]
2337	$_image(swatch) put black -to 0 0 23 23
2338	$_image(swatch) put $color -to 1 1 22 22
2339	.rappturetooltip configure -icon $_image(swatch)
2340
2341	# Compute the value of the point
2342	if { [info exists _limits($_curFldName)] } {
2343	foreach {vmin vmax} $_limits($_curFldName) break
2344	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2345	set value [expr $t * ($vmax - $vmin) + $vmin]
2346	} else {
2347	set value 0.0
2348	}
2349	set tipx [expr $x + 15]
2350	set tipy [expr $y - 5]
2351	Rappture::Tooltip::text $c "$title $value"
2352	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2353	}
2354
2355	# ----------------------------------------------------------------------
2356	# USAGE: Slice move x\|y\|z <newval>
2357	#
2358	# Called automatically when the user drags the slider to move the
2359	# cut plane that slices 3D data. Gets the current value from the
2360	# slider and moves the cut plane to the appropriate point in the
2361	# data set.
2362	# ----------------------------------------------------------------------
2363	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2364	switch -- $option {
2365	"move" {
2366	set axis [lindex $args 0]
2367	set newval [lindex $args 1]
2368	if {[llength $args] != 2} {
2369	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2370	}
2371	set newpos [expr {0.01*$newval}]
2372	SendCmd "cutplane slice $axis $newpos"
2373	}
2374	"tooltip" {
2375	set axis [lindex $args 0]
2376	set val [$itk_component(${axis}CutScale) get]
2377	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2378	}
2379	default {
2380	error "bad option \"$option\": should be axis, move, or tooltip"
2381	}
2382	}
2383	}
2384
2385	# ----------------------------------------------------------------------
2386	# USAGE: _dropdown post
2387	# USAGE: _dropdown unpost
2388	# USAGE: _dropdown select
2389	#
2390	# Used internally to handle the dropdown list for this combobox. The
2391	# post/unpost options are invoked when the list is posted or unposted
2392	# to manage the relief of the controlling button. The select option
2393	# is invoked whenever there is a selection from the list, to assign
2394	# the value back to the gauge.
2395	# ----------------------------------------------------------------------
2396	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2397	set c $itk_component(view)
2398	switch -- $option {
2399	post {
2400	foreach { x1 y1 x2 y2 } [$c bbox title] break
2401	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2402	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2403	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2404	tk_popup $itk_component(fieldmenu) $x $y
2405	}
2406	activate {
2407	$c itemconfigure title -fill red
2408	}
2409	deactivate {
2410	$c itemconfigure title -fill white
2411	}
2412	invoke {
2413	$itk_component(field) value $_curFldLabel
2414	AdjustSetting field
2415	}
2416	default {
2417	error "bad option \"$option\": should be post, unpost, select"
2418	}
2419	}
2420	}
2421
2422	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2423	array set positions {
2424	front "1 0 0 0"
2425	back "0 0 1 0"
2426	left "0.707107 0 -0.707107 0"
2427	right "0.707107 0 0.707107 0"
2428	top "0.707107 -0.707107 0 0"
2429	bottom "0.707107 0.707107 0 0"
2430	}
2431	foreach name { qw qx qy qz } value $positions($side) {
2432	set _view($name) $value
2433	}
2434	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2435	$_arcball quaternion $q
2436	SendCmd "camera orient $q"
2437	SendCmd "camera reset"
2438	set _view(xpan) 0
2439	set _view(ypan) 0
2440	set _view(zoom) 1.0
2441	}

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