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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 4045

Last change on this file since 4045 was 3923, checked in by gah, 11 years ago
fix z-axis labels for contour/heightmap
File size: 83.2 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkviewer - Vtk drawing object viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	package require Img
17
18	option add *VtkStreamlinesViewer.width 4i widgetDefault
19	option add VtkStreamlinesViewercursor crosshair widgetDefault
20	option add *VtkStreamlinesViewer.height 4i widgetDefault
21	option add *VtkStreamlinesViewer.foreground black widgetDefault
22	option add *VtkStreamlinesViewer.controlBackground gray widgetDefault
23	option add *VtkStreamlinesViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkStreamlinesViewer.plotBackground black widgetDefault
25	option add *VtkStreamlinesViewer.plotForeground white widgetDefault
26	option add *VtkStreamlinesViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkStreamlinesViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkStreamlinesViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkStreamlinesViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40
41	constructor { hostlist args } {
42	Rappture::VisViewer::constructor $hostlist
43	} {
44	# defined below
45	}
46	destructor {
47	# defined below
48	}
49	public proc SetServerList { namelist } {
50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
51	}
52	public method add {dataobj {settings ""}}
53	public method camera {option args}
54	public method delete {args}
55	public method disconnect {}
56	public method download {option args}
57	public method get {args}
58	public method isconnected {}
59	public method parameters {title args} {
60	# do nothing
61	}
62	public method scale {args}
63
64	protected method Connect {}
65	protected method CurrentDatasets {args}
66	protected method Disconnect {}
67	protected method DoResize {}
68	protected method DoReseed {}
69	protected method DoRotate {}
70	protected method AdjustSetting {what {value ""}}
71	protected method InitSettings { args }
72	protected method Pan {option x y}
73	protected method Pick {x y}
74	protected method Rebuild {}
75	protected method ReceiveDataset { args }
76	protected method ReceiveImage { args }
77	protected method ReceiveLegend { colormap title vmin vmax size }
78	protected method Rotate {option x y}
79	protected method Zoom {option}
80
81	# The following methods are only used by this class.
82	private method BuildAxisTab {}
83	private method BuildCameraTab {}
84	private method BuildColormap { name colors }
85	private method BuildCutplaneTab {}
86	private method BuildDownloadPopup { widget command }
87	private method BuildStreamsTab {}
88	private method BuildVolumeTab {}
89	private method 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	axisXGrid 0
229	axisYGrid 0
230	axisZGrid 0
231	cutplaneEdges 0
232	cutplaneLighting 1
233	cutplaneOpacity 100
234	cutplaneVisible 0
235	cutplaneWireframe 0
236	cutplaneXPosition 50
237	cutplaneXVisible 1
238	cutplaneYPosition 50
239	cutplaneYVisible 1
240	cutplaneZPosition 50
241	cutplaneZVisible 1
242	legendVisible 1
243	streamlinesLighting 1
244	streamlinesMode lines
245	streamlinesNumSeeds 200
246	streamlinesOpacity 100
247	streamlinesScale 1
248	streamlinesSeedsVisible 0
249	streamlinesVisible 1
250	volumeEdges 0
251	volumeLighting 1
252	volumeOpacity 40
253	volumeVisible 1
254	volumeWireframe 0
255	}]
256
257	itk_component add view {
258	canvas $itk_component(plotarea).view \
259	-highlightthickness 0 -borderwidth 0
260	} {
261	usual
262	ignore -highlightthickness -borderwidth -background
263	}
264
265	itk_component add fieldmenu {
266	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
267	-tearoff no
268	} {
269	usual
270	ignore -background -foreground -relief -tearoff
271	}
272	set c $itk_component(view)
273	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
274	bind $c <4> [itcl::code $this Zoom in 0.25]
275	bind $c <5> [itcl::code $this Zoom out 0.25]
276	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
277	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
278	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
279	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
280	bind $c <Enter> "focus %W"
281	bind $c <Control-F1> [itcl::code $this ToggleConsole]
282
283	# Fix the scrollregion in case we go off screen
284	$c configure -scrollregion [$c bbox all]
285
286	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
287	set _map(cwidth) -1
288	set _map(cheight) -1
289	set _map(zoom) 1.0
290	set _map(original) ""
291
292	set f [$itk_component(main) component controls]
293	itk_component add reset {
294	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon reset-view] \
297	-command [itcl::code $this Zoom reset]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(reset) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
304
305	itk_component add zoomin {
306	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-in] \
309	-command [itcl::code $this Zoom in]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomin) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
316
317	itk_component add zoomout {
318	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
319	-highlightthickness 0 \
320	-image [Rappture::icon zoom-out] \
321	-command [itcl::code $this Zoom out]
322	} {
323	usual
324	ignore -highlightthickness
325	}
326	pack $itk_component(zoomout) -side top -padx 2 -pady 2
327	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
328
329	itk_component add volume {
330	Rappture::PushButton $f.volume \
331	-onimage [Rappture::icon volume-on] \
332	-offimage [Rappture::icon volume-off] \
333	-variable [itcl::scope _settings(volumeVisible)] \
334	-command [itcl::code $this AdjustSetting volumeVisible]
335	}
336	$itk_component(volume) select
337	Rappture::Tooltip::for $itk_component(volume) \
338	"Don't display the volume"
339	pack $itk_component(volume) -padx 2 -pady 2
340
341	itk_component add streamlines {
342	Rappture::PushButton $f.streamlines \
343	-onimage [Rappture::icon streamlines-on] \
344	-offimage [Rappture::icon streamlines-off] \
345	-variable [itcl::scope _settings(streamlinesVisible)] \
346	-command [itcl::code $this AdjustSetting streamlinesVisible] \
347	}
348	$itk_component(streamlines) select
349	Rappture::Tooltip::for $itk_component(streamlines) \
350	"Toggle the streamlines on/off"
351	pack $itk_component(streamlines) -padx 2 -pady 2
352
353	itk_component add cutplane {
354	Rappture::PushButton $f.cutplane \
355	-onimage [Rappture::icon cutbutton] \
356	-offimage [Rappture::icon cutbutton] \
357	-variable [itcl::scope _settings(cutplaneVisible)] \
358	-command [itcl::code $this AdjustSetting cutplaneVisible]
359	}
360	Rappture::Tooltip::for $itk_component(cutplane) \
361	"Show/Hide cutplanes"
362	pack $itk_component(cutplane) -padx 2 -pady 2
363
364
365	if { [catch {
366	BuildVolumeTab
367	BuildStreamsTab
368	BuildCutplaneTab
369	BuildAxisTab
370	BuildCameraTab
371	} errs] != 0 } {
372	puts stderr errs=$errs
373	}
374	# Legend
375
376	set _image(legend) [image create photo]
377	itk_component add legend {
378	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
379	} {
380	usual
381	ignore -highlightthickness
382	rename -background -plotbackground plotBackground Background
383	}
384
385	# Hack around the Tk panewindow. The problem is that the requested
386	# size of the 3d view isn't set until an image is retrieved from
387	# the server. So the panewindow uses the tiny size.
388	set w 10000
389	pack forget $itk_component(view)
390	blt::table $itk_component(plotarea) \
391	0,0 $itk_component(view) -fill both -reqwidth $w
392	blt::table configure $itk_component(plotarea) c1 -resize none
393
394	# Bindings for rotation via mouse
395	bind $itk_component(view) <ButtonPress-1> \
396	[itcl::code $this Rotate click %x %y]
397	bind $itk_component(view) <B1-Motion> \
398	[itcl::code $this Rotate drag %x %y]
399	bind $itk_component(view) <ButtonRelease-1> \
400	[itcl::code $this Rotate release %x %y]
401	bind $itk_component(view) <Configure> \
402	[itcl::code $this EventuallyResize %w %h]
403
404	if 0 {
405	bind $itk_component(view) <Configure> \
406	[itcl::code $this EventuallyResize %w %h]
407	}
408	# Bindings for panning via mouse
409	bind $itk_component(view) <ButtonPress-2> \
410	[itcl::code $this Pan click %x %y]
411	bind $itk_component(view) <B2-Motion> \
412	[itcl::code $this Pan drag %x %y]
413	bind $itk_component(view) <ButtonRelease-2> \
414	[itcl::code $this Pan release %x %y]
415
416	#bind $itk_component(view) <ButtonRelease-3> \
417	# [itcl::code $this Pick %x %y]
418
419	# Bindings for panning via keyboard
420	bind $itk_component(view) <KeyPress-Left> \
421	[itcl::code $this Pan set -10 0]
422	bind $itk_component(view) <KeyPress-Right> \
423	[itcl::code $this Pan set 10 0]
424	bind $itk_component(view) <KeyPress-Up> \
425	[itcl::code $this Pan set 0 -10]
426	bind $itk_component(view) <KeyPress-Down> \
427	[itcl::code $this Pan set 0 10]
428	bind $itk_component(view) <Shift-KeyPress-Left> \
429	[itcl::code $this Pan set -2 0]
430	bind $itk_component(view) <Shift-KeyPress-Right> \
431	[itcl::code $this Pan set 2 0]
432	bind $itk_component(view) <Shift-KeyPress-Up> \
433	[itcl::code $this Pan set 0 -2]
434	bind $itk_component(view) <Shift-KeyPress-Down> \
435	[itcl::code $this Pan set 0 2]
436
437	# Bindings for zoom via keyboard
438	bind $itk_component(view) <KeyPress-Prior> \
439	[itcl::code $this Zoom out]
440	bind $itk_component(view) <KeyPress-Next> \
441	[itcl::code $this Zoom in]
442
443	bind $itk_component(view) <Enter> "focus $itk_component(view)"
444
445	if {[string equal "x11" [tk windowingsystem]]} {
446	# Bindings for zoom via mouse
447	bind $itk_component(view) <4> [itcl::code $this Zoom out]
448	bind $itk_component(view) <5> [itcl::code $this Zoom in]
449	}
450
451	set _image(download) [image create photo]
452
453	eval itk_initialize $args
454	Connect
455	update
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 buffing 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 "hub" [exec hostname]
803	lappend info "client" "vtkstreamlinesviewer"
804	lappend info "user" $user
805	lappend info "session" $session
806	SendCmd "clientinfo [list $info]"
807	}
808
809	set w [winfo width $itk_component(view)]
810	set h [winfo height $itk_component(view)]
811	EventuallyResize $w $h
812	}
813	return $result
814	}
815
816	#
817	# isconnected --
818	#
819	# Indicates if we are currently connected to the visualization server.
820	#
821	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
822	return [VisViewer::IsConnected]
823	}
824
825	#
826	# disconnect --
827	#
828	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
829	Disconnect
830	set _reset 1
831	}
832
833	#
834	# Disconnect --
835	#
836	# Clients use this method to disconnect from the current rendering
837	# server.
838	#
839	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
840	VisViewer::Disconnect
841
842	$_dispatcher cancel !rebuild
843	$_dispatcher cancel !resize
844	$_dispatcher cancel !reseed
845	$_dispatcher cancel !rotate
846	$_dispatcher cancel !xcutplane
847	$_dispatcher cancel !ycutplane
848	$_dispatcher cancel !zcutplane
849	$_dispatcher cancel !legend
850	# disconnected -- no more data sitting on server
851	array unset _datasets
852	array unset _data
853	array unset _colormaps
854	array unset _seeds
855	array unset _dataset2style
856	array unset _obj2datasets
857	}
858
859	# ----------------------------------------------------------------------
860	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
861	#
862	# Invoked automatically whenever the "image" command comes in from
863	# the rendering server. Indicates that binary image data with the
864	# specified <size> will follow.
865	# ----------------------------------------------------------------------
866	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
867	array set info {
868	-token "???"
869	-bytes 0
870	-type image
871	}
872	array set info $args
873	set bytes [ReceiveBytes $info(-bytes)]
874	if { $info(-type) == "image" } {
875	if 0 {
876	set f [open "last.ppm" "w"]
877	puts $f $bytes
878	close $f
879	}
880	$_image(plot) configure -data $bytes
881	set time [clock seconds]
882	set date [clock format $time]
883	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
884	if { $_start > 0 } {
885	set finish [clock clicks -milliseconds]
886	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
887	set _start 0
888	}
889	} elseif { $info(type) == "print" } {
890	set tag $this-print-$info(-token)
891	set _hardcopy($tag) $bytes
892	}
893	if { $_legendPending } {
894	RequestLegend
895	}
896	}
897
898	#
899	# ReceiveDataset --
900	#
901	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
902	if { ![isconnected] } {
903	return
904	}
905	set option [lindex $args 0]
906	switch -- $option {
907	"scalar" {
908	set option [lindex $args 1]
909	switch -- $option {
910	"world" {
911	foreach { x y z value tag } [lrange $args 2 end] break
912	}
913	"pixel" {
914	foreach { x y value tag } [lrange $args 2 end] break
915	}
916	}
917	}
918	"vector" {
919	set option [lindex $args 1]
920	switch -- $option {
921	"world" {
922	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
923	}
924	"pixel" {
925	foreach { x y vx vy vz tag } [lrange $args 2 end] break
926	}
927	}
928	}
929	"names" {
930	foreach { name } [lindex $args 1] {
931	#puts stderr "Dataset: $name"
932	}
933	}
934	default {
935	error "unknown dataset option \"$option\" from server"
936	}
937	}
938	}
939
940	# ----------------------------------------------------------------------
941	# USAGE: Rebuild
942	#
943	# Called automatically whenever something changes that affects the
944	# data in the widget. Clears any existing data and rebuilds the
945	# widget to display new data.
946	# ----------------------------------------------------------------------
947	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
948	update
949	set w [winfo width $itk_component(view)]
950	set h [winfo height $itk_component(view)]
951	if { $w < 2 \|\| $h < 2 } {
952	$_dispatcher event -idle !rebuild
953	return
954	}
955
956	# Turn on buffering of commands to the server. We don't want to
957	# be preempted by a server disconnect/reconnect (which automatically
958	# generates a new call to Rebuild).
959	StartBufferingCommands
960	set _legendPending 1
961
962	set _first ""
963	if { $_reset } {
964	set _width $w
965	set _height $h
966	$_arcball resize $w $h
967	DoResize
968	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
969	axesVisible axisLabelsVisible
970	# This "imgflush" is to force an image returned before vtkvis starts
971	# reading a (big) dataset. This will display an empty plot with axes
972	# at the correct image size.
973	SendCmd "imgflush"
974	}
975
976	set _first ""
977	SendCmd "dataset visible 0"
978	foreach dataobj [get -objects] {
979	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
980	set _first $dataobj
981	}
982	set _obj2datasets($dataobj) ""
983	foreach comp [$dataobj components] {
984	set tag $dataobj-$comp
985	if { ![info exists _datasets($tag)] } {
986	set bytes [$dataobj vtkdata $comp]
987	set length [string length $bytes]
988	if 0 {
989	set f [open /tmp/vtkstreamlines.vtk "w"]
990	fconfigure $f -translation binary -encoding binary
991	puts $f $bytes
992	close $f
993	}
994	if { $_reportClientInfo } {
995	set info {}
996	lappend info "tool_id" [$dataobj hints toolId]
997	lappend info "tool_name" [$dataobj hints toolName]
998	lappend info "tool_version" [$dataobj hints toolRevision]
999	lappend info "tool_title" [$dataobj hints toolTitle]
1000	lappend info "dataset_label" [$dataobj hints label]
1001	lappend info "dataset_size" $length
1002	lappend info "dataset_tag" $tag
1003	SendCmd "clientinfo [list $info]"
1004	}
1005	SendCmd "dataset add $tag data follows $length"
1006	append _outbuf $bytes
1007	set _datasets($tag) 1
1008	SetObjectStyle $dataobj $comp
1009	}
1010	lappend _obj2datasets($dataobj) $tag
1011	if { [info exists _obj2ovride($dataobj-raise)] } {
1012	SendCmd "dataset visible 1 $tag"
1013	}
1014	}
1015	}
1016	if {"" != $_first} {
1017	set location [$_first hints camera]
1018	if { $location != "" } {
1019	array set view $location
1020	}
1021	foreach axis { x y z } {
1022	set label [$_first hints ${axis}label]
1023	if { $label != "" } {
1024	SendCmd "axis name $axis $label"
1025	}
1026	set units [$_first hints ${axis}units]
1027	if { $units != "" } {
1028	SendCmd "axis units $axis $units"
1029	}
1030	}
1031	$itk_component(field) choices delete 0 end
1032	$itk_component(fieldmenu) delete 0 end
1033	array unset _fields
1034	set _curFldName ""
1035	foreach cname [$_first components] {
1036	foreach fname [$_first fieldnames $cname] {
1037	if { [info exists _fields($fname)] } {
1038	continue
1039	}
1040	foreach { label units components } \
1041	[$_first fieldinfo $fname] break
1042	$itk_component(field) choices insert end "$fname" "$label"
1043	$itk_component(fieldmenu) add radiobutton -label "$label" \
1044	-value $label -variable [itcl::scope _curFldLabel] \
1045	-selectcolor red \
1046	-activebackground $itk_option(-plotbackground) \
1047	-activeforeground $itk_option(-plotforeground) \
1048	-font "Arial 8" \
1049	-command [itcl::code $this Combo invoke]
1050	set _fields($fname) [list $label $units $components]
1051	if { $_curFldName == "" } {
1052	set _curFldName $fname
1053	set _curFldLabel $label
1054	}
1055	}
1056	}
1057	$itk_component(field) value $_curFldLabel
1058	}
1059
1060	if { $_reset } {
1061	InitSettings streamlinesSeedsVisible streamlinesOpacity \
1062	streamlinesVisible streamlinesColormap \
1063	streamlinesLighting \
1064	streamlinesColormap field \
1065	volumeVisible volumeEdges volumeLighting volumeOpacity \
1066	volumeWireframe \
1067	cutplaneVisible \
1068	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
1069	cutplaneXVisible cutplaneYVisible cutplaneZVisible
1070
1071	# Reset the camera and other view parameters
1072	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1073	$_arcball quaternion $q
1074	if {$_view(ortho)} {
1075	SendCmd "camera mode ortho"
1076	} else {
1077	SendCmd "camera mode persp"
1078	}
1079	DoRotate
1080	PanCamera
1081	Zoom reset
1082	SendCmd "camera reset"
1083	set _reset 0
1084	}
1085	# Actually write the commands to the server socket. If it fails, we don't
1086	# care. We're finished here.
1087	blt::busy hold $itk_component(hull)
1088	StopBufferingCommands
1089	blt::busy release $itk_component(hull)
1090	}
1091
1092	# ----------------------------------------------------------------------
1093	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1094	#
1095	# Returns a list of server IDs for the current datasets being displayed. This
1096	# is normally a single ID, but it might be a list of IDs if the current data
1097	# object has multiple components.
1098	# ----------------------------------------------------------------------
1099	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
1100	set flag [lindex $args 0]
1101	switch -- $flag {
1102	"-all" {
1103	if { [llength $args] > 1 } {
1104	error "CurrentDatasets: can't specify dataobj after \"-all\""
1105	}
1106	set dlist [get -objects]
1107	}
1108	"-visible" {
1109	if { [llength $args] > 1 } {
1110	set dlist {}
1111	set args [lrange $args 1 end]
1112	foreach dataobj $args {
1113	if { [info exists _obj2ovride($dataobj-raise)] } {
1114	lappend dlist $dataobj
1115	}
1116	}
1117	} else {
1118	set dlist [get -visible]
1119	}
1120	}
1121	default {
1122	set dlist $args
1123	}
1124	}
1125	set rlist ""
1126	foreach dataobj $dlist {
1127	foreach comp [$dataobj components] {
1128	set tag $dataobj-$comp
1129	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1130	lappend rlist $tag
1131	}
1132	}
1133	}
1134	return $rlist
1135	}
1136
1137	# ----------------------------------------------------------------------
1138	# USAGE: Zoom in
1139	# USAGE: Zoom out
1140	# USAGE: Zoom reset
1141	#
1142	# Called automatically when the user clicks on one of the zoom
1143	# controls for this widget. Changes the zoom for the current view.
1144	# ----------------------------------------------------------------------
1145	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1146	switch -- $option {
1147	"in" {
1148	set _view(zoom) [expr {$_view(zoom)*1.25}]
1149	SendCmd "camera zoom $_view(zoom)"
1150	}
1151	"out" {
1152	set _view(zoom) [expr {$_view(zoom)*0.8}]
1153	SendCmd "camera zoom $_view(zoom)"
1154	}
1155	"reset" {
1156	array set _view {
1157	qw 0.853553
1158	qx -0.353553
1159	qy 0.353553
1160	qz 0.146447
1161	zoom 1.0
1162	xpan 0
1163	ypan 0
1164	}
1165	if { $_first != "" } {
1166	set location [$_first hints camera]
1167	if { $location != "" } {
1168	array set _view $location
1169	}
1170	}
1171	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1172	$_arcball quaternion $q
1173	DoRotate
1174	SendCmd "camera reset"
1175	}
1176	}
1177	}
1178
1179	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1180	set x $_view(xpan)
1181	set y $_view(ypan)
1182	SendCmd "camera pan $x $y"
1183	}
1184
1185
1186	# ----------------------------------------------------------------------
1187	# USAGE: Rotate click <x> <y>
1188	# USAGE: Rotate drag <x> <y>
1189	# USAGE: Rotate release <x> <y>
1190	#
1191	# Called automatically when the user clicks/drags/releases in the
1192	# plot area. Moves the plot according to the user's actions.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1195	switch -- $option {
1196	"click" {
1197	$itk_component(view) configure -cursor fleur
1198	set _click(x) $x
1199	set _click(y) $y
1200	}
1201	"drag" {
1202	if {[array size _click] == 0} {
1203	Rotate click $x $y
1204	} else {
1205	set w [winfo width $itk_component(view)]
1206	set h [winfo height $itk_component(view)]
1207	if {$w <= 0 \|\| $h <= 0} {
1208	return
1209	}
1210
1211	if {[catch {
1212	# this fails sometimes for no apparent reason
1213	set dx [expr {double($x-$_click(x))/$w}]
1214	set dy [expr {double($y-$_click(y))/$h}]
1215	}]} {
1216	return
1217	}
1218	if { $dx == 0 && $dy == 0 } {
1219	return
1220	}
1221	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1222	EventuallyRotate $q
1223	set _click(x) $x
1224	set _click(y) $y
1225	}
1226	}
1227	"release" {
1228	Rotate drag $x $y
1229	$itk_component(view) configure -cursor ""
1230	catch {unset _click}
1231	}
1232	default {
1233	error "bad option \"$option\": should be click, drag, release"
1234	}
1235	}
1236	}
1237
1238	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1239	foreach tag [CurrentDatasets -visible] {
1240	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
1241	}
1242	}
1243
1244	# ----------------------------------------------------------------------
1245	# USAGE: $this Pan click x y
1246	# $this Pan drag x y
1247	# $this Pan release x y
1248	#
1249	# Called automatically when the user clicks on one of the zoom
1250	# controls for this widget. Changes the zoom for the current view.
1251	# ----------------------------------------------------------------------
1252	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1253	switch -- $option {
1254	"set" {
1255	set w [winfo width $itk_component(view)]
1256	set h [winfo height $itk_component(view)]
1257	set x [expr $x / double($w)]
1258	set y [expr $y / double($h)]
1259	set _view(xpan) [expr $_view(xpan) + $x]
1260	set _view(ypan) [expr $_view(ypan) + $y]
1261	PanCamera
1262	return
1263	}
1264	"click" {
1265	set _click(x) $x
1266	set _click(y) $y
1267	$itk_component(view) configure -cursor hand1
1268	}
1269	"drag" {
1270	if { ![info exists _click(x)] } {
1271	set _click(x) $x
1272	}
1273	if { ![info exists _click(y)] } {
1274	set _click(y) $y
1275	}
1276	set w [winfo width $itk_component(view)]
1277	set h [winfo height $itk_component(view)]
1278	set dx [expr ($_click(x) - $x)/double($w)]
1279	set dy [expr ($_click(y) - $y)/double($h)]
1280	set _click(x) $x
1281	set _click(y) $y
1282	set _view(xpan) [expr $_view(xpan) - $dx]
1283	set _view(ypan) [expr $_view(ypan) - $dy]
1284	PanCamera
1285	}
1286	"release" {
1287	Pan drag $x $y
1288	$itk_component(view) configure -cursor ""
1289	}
1290	default {
1291	error "unknown option \"$option\": should set, click, drag, or release"
1292	}
1293	}
1294	}
1295
1296	# ----------------------------------------------------------------------
1297	# USAGE: InitSettings <what> ?<value>?
1298	#
1299	# Used internally to update rendering settings whenever parameters
1300	# change in the popup settings panel. Sends the new settings off
1301	# to the back end.
1302	# ----------------------------------------------------------------------
1303	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
1304	foreach spec $args {
1305	if { [info exists _settings($_first-$spec)] } {
1306	# Reset global setting with dataobj specific setting
1307	set _settings($spec) $_settings($_first-$spec)
1308	}
1309	AdjustSetting $spec
1310	}
1311	}
1312
1313	#
1314	# AdjustSetting --
1315	#
1316	# Changes/updates a specific setting in the widget. There are
1317	# usually user-setable option. Commands are sent to the render
1318	# server.
1319	#
1320	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1321	if { ![isconnected] } {
1322	return
1323	}
1324	switch -- $what {
1325	"volumeOpacity" {
1326	set val $_settings(volumeOpacity)
1327	set sval [expr { 0.01 * double($val) }]
1328	SendCmd "polydata opacity $sval"
1329	}
1330	"volumeWireframe" {
1331	set bool $_settings(volumeWireframe)
1332	SendCmd "polydata wireframe $bool"
1333	}
1334	"volumeVisible" {
1335	set bool $_settings(volumeVisible)
1336	SendCmd "polydata visible $bool"
1337	if { $bool } {
1338	Rappture::Tooltip::for $itk_component(volume) \
1339	"Hide the volume"
1340	} else {
1341	Rappture::Tooltip::for $itk_component(volume) \
1342	"Show the volume"
1343	}
1344	}
1345	"volumeLighting" {
1346	set bool $_settings(volumeLighting)
1347	SendCmd "polydata lighting $bool"
1348	}
1349	"volumeEdges" {
1350	set bool $_settings(volumeEdges)
1351	SendCmd "polydata edges $bool"
1352	}
1353	"axesVisible" {
1354	set bool $_settings(axesVisible)
1355	SendCmd "axis visible all $bool"
1356	}
1357	"axisLabelsVisible" {
1358	set bool $_settings(axisLabelsVisible)
1359	SendCmd "axis labels all $bool"
1360	}
1361	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1362	set axis [string tolower [string range $what 4 4]]
1363	set bool $_settings($what)
1364	SendCmd "axis grid $axis $bool"
1365	}
1366	"axis-mode" {
1367	set mode [$itk_component(axismode) value]
1368	set mode [$itk_component(axismode) translate $mode]
1369	set _settings($what) $mode
1370	SendCmd "axis flymode $mode"
1371	}
1372	"cutplaneEdges" {
1373	set bool $_settings($what)
1374	SendCmd "cutplane edges $bool"
1375	}
1376	"cutplaneVisible" {
1377	set bool $_settings($what)
1378	SendCmd "cutplane visible $bool"
1379	}
1380	"cutplaneWireframe" {
1381	set bool $_settings($what)
1382	SendCmd "cutplane wireframe $bool"
1383	}
1384	"cutplaneLighting" {
1385	set bool $_settings($what)
1386	SendCmd "cutplane lighting $bool"
1387	}
1388	"cutplaneOpacity" {
1389	set val $_settings($what)
1390	set sval [expr { 0.01 * double($val) }]
1391	SendCmd "cutplane opacity $sval"
1392	}
1393	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
1394	set axis [string tolower [string range $what 8 8]]
1395	set bool $_settings($what)
1396	if { $bool } {
1397	$itk_component(${axis}CutScale) configure -state normal \
1398	-troughcolor white
1399	} else {
1400	$itk_component(${axis}CutScale) configure -state disabled \
1401	-troughcolor grey82
1402	}
1403	SendCmd "cutplane axis $axis $bool"
1404	}
1405	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
1406	set axis [string tolower [string range $what 8 8]]
1407	set pos [expr $_settings($what) * 0.01]
1408	SendCmd "cutplane slice ${axis} ${pos}"
1409	set _cutplanePending 0
1410	}
1411	"streamlinesSeedsVisible" {
1412	set bool $_settings($what)
1413	SendCmd "streamlines seed visible $bool"
1414	}
1415	"streamlinesNumSeeds" {
1416	set density $_settings($what)
1417	EventuallyReseed $density
1418	}
1419	"streamlinesVisible" {
1420	set bool $_settings($what)
1421	SendCmd "streamlines visible $bool"
1422	if { $bool } {
1423	Rappture::Tooltip::for $itk_component(streamlines) \
1424	"Hide the streamlines"
1425	} else {
1426	Rappture::Tooltip::for $itk_component(streamlines) \
1427	"Show the streamlines"
1428	}
1429	}
1430	"streamlinesMode" {
1431	set mode [$itk_component(streammode) value]
1432	set _settings(streamlinesMode) $mode
1433	switch -- $mode {
1434	"lines" {
1435	SendCmd "streamlines lines"
1436	}
1437	"ribbons" {
1438	SendCmd "streamlines ribbons 3 0"
1439	}
1440	"tubes" {
1441	SendCmd "streamlines tubes 5 3"
1442	}
1443	}
1444	}
1445	"streamlinesColormap" {
1446	set colormap [$itk_component(colormap) value]
1447	set _settings(streamlinesColormap) $colormap
1448	foreach dataset [CurrentDatasets -visible $_first] {
1449	foreach {dataobj comp} [split $dataset -] break
1450	ChangeColormap $dataobj $comp $colormap
1451	}
1452	set _legendPending 1
1453	}
1454	"streamlinesOpacity" {
1455	set val $_settings(streamlinesOpacity)
1456	set sval [expr { 0.01 * double($val) }]
1457	SendCmd "streamlines opacity $sval"
1458	}
1459	"streamlinesScale" {
1460	set val $_settings(streamlinesScale)
1461	set sval [expr { 0.01 * double($val) }]
1462	SendCmd "streamlines scale $sval $sval $sval"
1463	}
1464	"streamlinesLighting" {
1465	set bool $_settings(streamlinesLighting)
1466	SendCmd "streamlines lighting $bool"
1467	}
1468	"field" {
1469	set label [$itk_component(field) value]
1470	set fname [$itk_component(field) translate $label]
1471	set _settings(field) $fname
1472	if { [info exists _fields($fname)] } {
1473	foreach { label units components } $_fields($fname) break
1474	if { $components > 1 } {
1475	set _colorMode vmag
1476	} else {
1477	set _colorMode scalar
1478	}
1479	set _curFldName $fname
1480	set _curFldLabel $label
1481	} else {
1482	puts stderr "unknown field \"$fname\""
1483	return
1484	}
1485	# Get the new limits because the field changed.
1486	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1487	SendCmd "streamlines colormode $_colorMode $_curFldName"
1488	SendCmd "cutplane colormode $_colorMode $_curFldName"
1489	DrawLegend
1490	}
1491	default {
1492	error "don't know how to fix $what"
1493	}
1494	}
1495	}
1496
1497	#
1498	# RequestLegend --
1499	#
1500	# Request a new legend from the server. The size of the legend
1501	# is determined from the height of the canvas. It will be rotated
1502	# to be vertical when drawn.
1503	#
1504	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1505	set font "Arial 8"
1506	set lineht [font metrics $font -linespace]
1507	set w 12
1508	set h [expr {$_height - 3 * ($lineht + 2)}]
1509	if { $h < 1 } {
1510	return
1511	}
1512	# Set the legend on the first streamlines dataset.
1513	foreach dataset [CurrentDatasets -visible $_first] {
1514	foreach {dataobj comp} [split $dataset -] break
1515	if { [info exists _dataset2style($dataset)] } {
1516	SendCmdNoWait \
1517	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1518	break;
1519	}
1520	}
1521	}
1522
1523	#
1524	# ChangeColormap --
1525	#
1526	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
1527	set tag $dataobj-$comp
1528	if { ![info exist _style($tag)] } {
1529	error "no initial colormap"
1530	}
1531	array set style $_style($tag)
1532	set style(-color) $color
1533	set _style($tag) [array get style]
1534	SetColormap $dataobj $comp
1535	}
1536
1537	#
1538	# SetColormap --
1539	#
1540	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1541	array set style {
1542	-color BCGYR
1543	-levels 6
1544	-opacity 1.0
1545	}
1546	set tag $dataobj-$comp
1547	if { ![info exists _initialStyle($tag)] } {
1548	# Save the initial component style.
1549	set _initialStyle($tag) [$dataobj style $comp]
1550	}
1551
1552	# Override defaults with initial style defined in xml.
1553	array set style $_initialStyle($tag)
1554
1555	if { ![info exists _style($tag)] } {
1556	set _style($tag) [array get style]
1557	}
1558	# Override initial style with current style.
1559	array set style $_style($tag)
1560
1561	set name "$style(-color):$style(-levels):$style(-opacity)"
1562	if { ![info exists _colormaps($name)] } {
1563	BuildColormap $name [array get style]
1564	set _colormaps($name) 1
1565	}
1566	if { ![info exists _dataset2style($tag)] \|\|
1567	$_dataset2style($tag) != $name } {
1568	SendCmd "streamlines colormap $name $tag"
1569	SendCmd "cutplane colormap $name $tag"
1570	set _dataset2style($tag) $name
1571	}
1572	}
1573
1574
1575	#
1576	# BuildColormap --
1577	#
1578	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
1579	array set style $styles
1580	set cmap [ColorsToColormap $style(-color)]
1581	if { [llength $cmap] == 0 } {
1582	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1583	}
1584	if { ![info exists _settings(volumeOpacity)] } {
1585	set _settings(volumeOpacity) $style(-opacity)
1586	}
1587	set max $_settings(volumeOpacity)
1588
1589	set wmap "0.0 1.0 1.0 1.0"
1590	SendCmd "colormap add $name { $cmap } { $wmap }"
1591	}
1592
1593	# ----------------------------------------------------------------------
1594	# CONFIGURATION OPTION: -plotbackground
1595	# ----------------------------------------------------------------------
1596	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1597	if { [isconnected] } {
1598	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1599	SendCmd "screen bgcolor $r $g $b"
1600	}
1601	}
1602
1603	# ----------------------------------------------------------------------
1604	# CONFIGURATION OPTION: -plotforeground
1605	# ----------------------------------------------------------------------
1606	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1607	if { [isconnected] } {
1608	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1609	#fix this!
1610	#SendCmd "color background $r $g $b"
1611	}
1612	}
1613
1614	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1615
1616	set fg [option get $itk_component(hull) font Font]
1617	#set bfg [option get $itk_component(hull) boldFont Font]
1618
1619	set inner [$itk_component(main) insert end \
1620	-title "Volume Settings" \
1621	-icon [Rappture::icon volume-on]]
1622	$inner configure -borderwidth 4
1623
1624	checkbutton $inner.volume \
1625	-text "Show Volume" \
1626	-variable [itcl::scope _settings(volumeVisible)] \
1627	-command [itcl::code $this AdjustSetting volumeVisible] \
1628	-font "Arial 9"
1629
1630	checkbutton $inner.wireframe \
1631	-text "Show Wireframe" \
1632	-variable [itcl::scope _settings(volumeWireframe)] \
1633	-command [itcl::code $this AdjustSetting volumeWireframe] \
1634	-font "Arial 9"
1635
1636	checkbutton $inner.lighting \
1637	-text "Enable Lighting" \
1638	-variable [itcl::scope _settings(volumeLighting)] \
1639	-command [itcl::code $this AdjustSetting volumeLighting] \
1640	-font "Arial 9"
1641
1642	checkbutton $inner.edges \
1643	-text "Show Edges" \
1644	-variable [itcl::scope _settings(volumeEdges)] \
1645	-command [itcl::code $this AdjustSetting volumeEdges] \
1646	-font "Arial 9"
1647
1648	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1649	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1650	-variable [itcl::scope _settings(volumeOpacity)] \
1651	-width 10 \
1652	-showvalue off \
1653	-command [itcl::code $this AdjustSetting volumeOpacity]
1654
1655	blt::table $inner \
1656	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1657	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1658	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
1659	3,0 $inner.opacity_l -anchor w -pady 2 \
1660	3,1 $inner.opacity -fill x -pady 2
1661
1662	blt::table configure $inner r* c* -resize none
1663	blt::table configure $inner r4 c1 -resize expand
1664	}
1665
1666
1667	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1668
1669	set fg [option get $itk_component(hull) font Font]
1670	#set bfg [option get $itk_component(hull) boldFont Font]
1671
1672	set inner [$itk_component(main) insert end \
1673	-title "Streams Settings" \
1674	-icon [Rappture::icon streamlines-on]]
1675	$inner configure -borderwidth 4
1676
1677	checkbutton $inner.streamlines \
1678	-text "Show Streamlines" \
1679	-variable [itcl::scope _settings(streamlinesVisible)] \
1680	-command [itcl::code $this AdjustSetting streamlinesVisible] \
1681	-font "Arial 9"
1682
1683	checkbutton $inner.lighting \
1684	-text "Enable Lighting" \
1685	-variable [itcl::scope _settings(streamlinesLighting)] \
1686	-command [itcl::code $this AdjustSetting streamlinesLighting] \
1687	-font "Arial 9"
1688
1689	checkbutton $inner.seeds \
1690	-text "Show Seeds" \
1691	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
1692	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
1693	-font "Arial 9"
1694
1695	label $inner.mode_l -text "Mode" -font "Arial 9"
1696	itk_component add streammode {
1697	Rappture::Combobox $inner.mode -width 10 -editable no
1698	}
1699	$inner.mode choices insert end \
1700	"lines" "lines" \
1701	"ribbons" "ribbons" \
1702	"tubes" "tubes"
1703	$itk_component(streammode) value $_settings(streamlinesMode)
1704	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
1705
1706	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1707	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1708	-variable [itcl::scope _settings(streamlinesOpacity)] \
1709	-width 10 \
1710	-showvalue off \
1711	-command [itcl::code $this AdjustSetting streamlinesOpacity]
1712
1713	label $inner.density_l -text "No. Seeds" -font "Arial 9"
1714	::scale $inner.density -from 1 -to 1000 -orient horizontal \
1715	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
1716	-width 10 \
1717	-showvalue on \
1718	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
1719
1720	label $inner.scale_l -text "Scale" -font "Arial 9"
1721	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1722	-variable [itcl::scope _settings(streamlinesScale)] \
1723	-width 10 \
1724	-showvalue off \
1725	-command [itcl::code $this AdjustSetting streamlinesScale]
1726
1727	label $inner.field_l -text "Color by" -font "Arial 9"
1728	itk_component add field {
1729	Rappture::Combobox $inner.field -width 10 -editable no
1730	}
1731	bind $inner.field <<Value>> \
1732	[itcl::code $this AdjustSetting field]
1733
1734	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1735	itk_component add colormap {
1736	Rappture::Combobox $inner.colormap -width 10 -editable no
1737	}
1738	$inner.colormap choices insert end \
1739	"BCGYR" "BCGYR" \
1740	"BGYOR" "BGYOR" \
1741	"blue" "blue" \
1742	"blue-to-brown" "blue-to-brown" \
1743	"blue-to-orange" "blue-to-orange" \
1744	"blue-to-grey" "blue-to-grey" \
1745	"green-to-magenta" "green-to-magenta" \
1746	"greyscale" "greyscale" \
1747	"nanohub" "nanohub" \
1748	"rainbow" "rainbow" \
1749	"spectral" "spectral" \
1750	"ROYGB" "ROYGB" \
1751	"RYGCB" "RYGCB" \
1752	"brown-to-blue" "brown-to-blue" \
1753	"grey-to-blue" "grey-to-blue" \
1754	"orange-to-blue" "orange-to-blue"
1755
1756	$itk_component(colormap) value "BCGYR"
1757	bind $inner.colormap <<Value>> \
1758	[itcl::code $this AdjustSetting streamlinesColormap]
1759
1760	blt::table $inner \
1761	0,0 $inner.field_l -anchor w -pady 2 \
1762	0,1 $inner.field -fill x -pady 2 \
1763	1,0 $inner.colormap_l -anchor w -pady 2 \
1764	1,1 $inner.colormap -fill x -pady 2 \
1765	2,0 $inner.mode_l -anchor w -pady 2 \
1766	2,1 $inner.mode -fill x -pady 2 \
1767	3,0 $inner.opacity_l -anchor w -pady 2 \
1768	3,1 $inner.opacity -fill x -pady 2 \
1769	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1770	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1771	7,0 $inner.density_l -anchor w -pady 2 \
1772	7,1 $inner.density -fill x -pady 2 \
1773
1774	blt::table configure $inner r* c* -resize none
1775	blt::table configure $inner r10 c1 c2 -resize expand
1776	}
1777
1778	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1779
1780	set fg [option get $itk_component(hull) font Font]
1781	#set bfg [option get $itk_component(hull) boldFont Font]
1782
1783	set inner [$itk_component(main) insert end \
1784	-title "Axis Settings" \
1785	-icon [Rappture::icon axis1]]
1786	$inner configure -borderwidth 4
1787
1788	checkbutton $inner.visible \
1789	-text "Show Axes" \
1790	-variable [itcl::scope _settings(axesVisible)] \
1791	-command [itcl::code $this AdjustSetting axesVisible] \
1792	-font "Arial 9"
1793
1794	checkbutton $inner.labels \
1795	-text "Show Axis Labels" \
1796	-variable [itcl::scope _settings(axisLabelsVisible)] \
1797	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
1798	-font "Arial 9"
1799
1800	checkbutton $inner.xgrid \
1801	-text "Show X Grid" \
1802	-variable [itcl::scope _settings(axisXGrid)] \
1803	-command [itcl::code $this AdjustSetting axisXGrid] \
1804	-font "Arial 9"
1805	checkbutton $inner.ygrid \
1806	-text "Show Y Grid" \
1807	-variable [itcl::scope _settings(axisYGrid)] \
1808	-command [itcl::code $this AdjustSetting axisYGrid] \
1809	-font "Arial 9"
1810	checkbutton $inner.zgrid \
1811	-text "Show Z Grid" \
1812	-variable [itcl::scope _settings(axisZGrid)] \
1813	-command [itcl::code $this AdjustSetting axisZGrid] \
1814	-font "Arial 9"
1815
1816	label $inner.mode_l -text "Mode" -font "Arial 9"
1817
1818	itk_component add axismode {
1819	Rappture::Combobox $inner.mode -width 10 -editable no
1820	}
1821	$inner.mode choices insert end \
1822	"static_triad" "static" \
1823	"closest_triad" "closest" \
1824	"furthest_triad" "farthest" \
1825	"outer_edges" "outer"
1826	$itk_component(axismode) value "static"
1827	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1828
1829	blt::table $inner \
1830	0,0 $inner.visible -anchor w -cspan 2 \
1831	1,0 $inner.labels -anchor w -cspan 2 \
1832	2,0 $inner.xgrid -anchor w -cspan 2 \
1833	3,0 $inner.ygrid -anchor w -cspan 2 \
1834	4,0 $inner.zgrid -anchor w -cspan 2 \
1835	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1836	6,0 $inner.mode -fill x -cspan 2
1837
1838	blt::table configure $inner r* c* -resize none
1839	blt::table configure $inner r7 c1 -resize expand
1840	}
1841
1842
1843	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1844	set inner [$itk_component(main) insert end \
1845	-title "Camera Settings" \
1846	-icon [Rappture::icon camera]]
1847	$inner configure -borderwidth 4
1848
1849	label $inner.view_l -text "view" -font "Arial 9"
1850	set f [frame $inner.view]
1851	foreach side { front back left right top bottom } {
1852	button $f.$side -image [Rappture::icon view$side] \
1853	-command [itcl::code $this SetOrientation $side]
1854	Rappture::Tooltip::for $f.$side "Change the view to $side"
1855	pack $f.$side -side left
1856	}
1857
1858	blt::table $inner \
1859	0,0 $inner.view_l -anchor e -pady 2 \
1860	0,1 $inner.view -anchor w -pady 2
1861
1862	set labels { qx qy qz qw xpan ypan zoom }
1863	set row 1
1864	foreach tag $labels {
1865	label $inner.${tag}label -text $tag -font "Arial 9"
1866	entry $inner.${tag} -font "Arial 9" -bg white \
1867	-textvariable [itcl::scope _view($tag)]
1868	bind $inner.${tag} <KeyPress-Return> \
1869	[itcl::code $this camera set ${tag}]
1870	blt::table $inner \
1871	$row,0 $inner.${tag}label -anchor e -pady 2 \
1872	$row,1 $inner.${tag} -anchor w -pady 2
1873	blt::table configure $inner r$row -resize none
1874	incr row
1875	}
1876	checkbutton $inner.ortho \
1877	-text "Orthographic Projection" \
1878	-variable [itcl::scope _view(ortho)] \
1879	-command [itcl::code $this camera set ortho] \
1880	-font "Arial 9"
1881	blt::table $inner \
1882	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1883	blt::table configure $inner r$row -resize none
1884	incr row
1885
1886	blt::table configure $inner c* r* -resize none
1887	blt::table configure $inner c2 -resize expand
1888	blt::table configure $inner r$row -resize expand
1889	}
1890
1891	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
1892
1893	set fg [option get $itk_component(hull) font Font]
1894
1895	set inner [$itk_component(main) insert end \
1896	-title "Cutplane Settings" \
1897	-icon [Rappture::icon cutbutton]]
1898
1899	$inner configure -borderwidth 4
1900
1901	checkbutton $inner.visible \
1902	-text "Show Cutplanes" \
1903	-variable [itcl::scope _settings(cutplaneVisible)] \
1904	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1905	-font "Arial 9"
1906
1907	checkbutton $inner.wireframe \
1908	-text "Show Wireframe" \
1909	-variable [itcl::scope _settings(cutplaneWireframe)] \
1910	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1911	-font "Arial 9"
1912
1913	checkbutton $inner.lighting \
1914	-text "Enable Lighting" \
1915	-variable [itcl::scope _settings(cutplaneLighting)] \
1916	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1917	-font "Arial 9"
1918
1919	checkbutton $inner.edges \
1920	-text "Show Edges" \
1921	-variable [itcl::scope _settings(cutplaneEdges)] \
1922	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1923	-font "Arial 9"
1924
1925	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1926	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1927	-variable [itcl::scope _settings(cutplaneOpacity)] \
1928	-width 10 \
1929	-showvalue off \
1930	-command [itcl::code $this AdjustSetting cutplaneOpacity]
1931	$inner.opacity set $_settings(cutplaneOpacity)
1932
1933	# X-value slicer...
1934	itk_component add xCutButton {
1935	Rappture::PushButton $inner.xbutton \
1936	-onimage [Rappture::icon x-cutplane-red] \
1937	-offimage [Rappture::icon x-cutplane-red] \
1938	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
1939	-variable [itcl::scope _settings(cutplaneXVisible)]
1940	}
1941	Rappture::Tooltip::for $itk_component(xCutButton) \
1942	"Toggle the X-axis cutplane on/off"
1943	$itk_component(xCutButton) select
1944
1945	itk_component add xCutScale {
1946	::scale $inner.xval -from 100 -to 0 \
1947	-width 10 -orient vertical -showvalue yes \
1948	-borderwidth 1 -highlightthickness 0 \
1949	-command [itcl::code $this EventuallySetCutplane x] \
1950	-variable [itcl::scope _settings(cutplaneXPosition)] \
1951	-foreground red3 -font "Arial 9 bold"
1952	} {
1953	usual
1954	ignore -borderwidth -highlightthickness -foreground -font
1955	}
1956	# Set the default cutplane value before disabling the scale.
1957	$itk_component(xCutScale) set 50
1958	$itk_component(xCutScale) configure -state disabled
1959	Rappture::Tooltip::for $itk_component(xCutScale) \
1960	"@[itcl::code $this Slice tooltip x]"
1961
1962	# Y-value slicer...
1963	itk_component add yCutButton {
1964	Rappture::PushButton $inner.ybutton \
1965	-onimage [Rappture::icon y-cutplane-green] \
1966	-offimage [Rappture::icon y-cutplane-green] \
1967	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
1968	-variable [itcl::scope _settings(cutplaneYVisible)]
1969	}
1970	Rappture::Tooltip::for $itk_component(yCutButton) \
1971	"Toggle the Y-axis cutplane on/off"
1972	$itk_component(yCutButton) select
1973
1974	itk_component add yCutScale {
1975	::scale $inner.yval -from 100 -to 0 \
1976	-width 10 -orient vertical -showvalue yes \
1977	-borderwidth 1 -highlightthickness 0 \
1978	-command [itcl::code $this EventuallySetCutplane y] \
1979	-variable [itcl::scope _settings(cutplaneYPosition)] \
1980	-foreground green3 -font "Arial 9 bold"
1981	} {
1982	usual
1983	ignore -borderwidth -highlightthickness -foreground -font
1984	}
1985	Rappture::Tooltip::for $itk_component(yCutScale) \
1986	"@[itcl::code $this Slice tooltip y]"
1987	# Set the default cutplane value before disabling the scale.
1988	$itk_component(yCutScale) set 50
1989	$itk_component(yCutScale) configure -state disabled
1990
1991	# Z-value slicer...
1992	itk_component add zCutButton {
1993	Rappture::PushButton $inner.zbutton \
1994	-onimage [Rappture::icon z-cutplane-blue] \
1995	-offimage [Rappture::icon z-cutplane-blue] \
1996	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
1997	-variable [itcl::scope _settings(cutplaneZVisible)]
1998	}
1999	Rappture::Tooltip::for $itk_component(zCutButton) \
2000	"Toggle the Z-axis cutplane on/off"
2001	$itk_component(zCutButton) select
2002
2003	itk_component add zCutScale {
2004	::scale $inner.zval -from 100 -to 0 \
2005	-width 10 -orient vertical -showvalue yes \
2006	-borderwidth 1 -highlightthickness 0 \
2007	-command [itcl::code $this EventuallySetCutplane z] \
2008	-variable [itcl::scope _settings(cutplaneZPosition)] \
2009	-foreground blue3 -font "Arial 9 bold"
2010	} {
2011	usual
2012	ignore -borderwidth -highlightthickness -foreground -font
2013	}
2014	$itk_component(zCutScale) set 50
2015	$itk_component(zCutScale) configure -state disabled
2016	Rappture::Tooltip::for $itk_component(zCutScale) \
2017	"@[itcl::code $this Slice tooltip z]"
2018
2019	blt::table $inner \
2020	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
2021	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
2022	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
2023	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
2024	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
2025	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
2026	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
2027	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
2028	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
2029	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
2030	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
2031
2032	blt::table configure $inner r* c* -resize none
2033	blt::table configure $inner r7 c4 -resize expand
2034	}
2035
2036	#
2037	# camera --
2038	#
2039	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
2040	switch -- $option {
2041	"show" {
2042	puts [array get _view]
2043	}
2044	"set" {
2045	set who [lindex $args 0]
2046	set x $_view($who)
2047	set code [catch { string is double $x } result]
2048	if { $code != 0 \|\| !$result } {
2049	return
2050	}
2051	switch -- $who {
2052	"ortho" {
2053	if {$_view(ortho)} {
2054	SendCmd "camera mode ortho"
2055	} else {
2056	SendCmd "camera mode persp"
2057	}
2058	}
2059	"xpan" - "ypan" {
2060	PanCamera
2061	}
2062	"qx" - "qy" - "qz" - "qw" {
2063	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2064	$_arcball quaternion $q
2065	EventuallyRotate $q
2066	}
2067	"zoom" {
2068	SendCmd "camera zoom $_view(zoom)"
2069	}
2070	}
2071	}
2072	}
2073	}
2074
2075	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
2076	set bytes ""
2077	foreach dataobj [get] {
2078	foreach comp [$dataobj components] {
2079	set tag $dataobj-$comp
2080	set contents [$dataobj vtkdata $comp]
2081	append bytes "$contents\n"
2082	}
2083	}
2084	return [list .vtk $bytes]
2085	}
2086
2087	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
2088	if { [image width $_image(download)] > 0 &&
2089	[image height $_image(download)] > 0 } {
2090	set bytes [$_image(download) data -format "jpeg -quality 100"]
2091	set bytes [Rappture::encoding::decode -as b64 $bytes]
2092	return [list .jpg $bytes]
2093	}
2094	return ""
2095	}
2096
2097	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
2098	Rappture::Balloon $popup \
2099	-title "[Rappture::filexfer::label downloadWord] as..."
2100	set inner [$popup component inner]
2101	label $inner.summary -text "" -anchor w
2102	radiobutton $inner.vtk_button -text "VTK data file" \
2103	-variable [itcl::scope _downloadPopup(format)] \
2104	-font "Helvetica 9 " \
2105	-value vtk
2106	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2107	radiobutton $inner.image_button -text "Image File" \
2108	-variable [itcl::scope _downloadPopup(format)] \
2109	-value image
2110	Rappture::Tooltip::for $inner.image_button \
2111	"Save as digital image."
2112
2113	button $inner.ok -text "Save" \
2114	-highlightthickness 0 -pady 2 -padx 3 \
2115	-command $command \
2116	-compound left \
2117	-image [Rappture::icon download]
2118
2119	button $inner.cancel -text "Cancel" \
2120	-highlightthickness 0 -pady 2 -padx 3 \
2121	-command [list $popup deactivate] \
2122	-compound left \
2123	-image [Rappture::icon cancel]
2124
2125	blt::table $inner \
2126	0,0 $inner.summary -cspan 2 \
2127	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2128	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2129	4,1 $inner.cancel -width .9i -fill y \
2130	4,0 $inner.ok -padx 2 -width .9i -fill y
2131	blt::table configure $inner r3 -height 4
2132	blt::table configure $inner r4 -pady 4
2133	raise $inner.image_button
2134	$inner.vtk_button invoke
2135	return $inner
2136	}
2137
2138	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2139	# Parse style string.
2140	set tag $dataobj-$comp
2141	set style [$dataobj style $comp]
2142	array set settings {
2143	-color \#808080
2144	-edges 0
2145	-edgecolor black
2146	-linewidth 1.0
2147	-opacity 0.4
2148	-wireframe 0
2149	-lighting 1
2150	-seeds 1
2151	-seedcolor white
2152	-visible 1
2153	}
2154	if { $dataobj != $_first } {
2155	set settings(-opacity) 1
2156	}
2157	array set settings $style
2158	SendCmd "streamlines add $tag"
2159	SendCmd "streamlines seed visible off $tag"
2160	set seeds [$dataobj hints seeds]
2161	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2162	set length [string length $seeds]
2163	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2164	SendCmd "$seeds"
2165	set _seeds($dataobj) 1
2166	}
2167	SendCmd "cutplane add $tag"
2168	SendCmd "polydata add $tag"
2169	SendCmd "polydata colormode constant {} $tag"
2170	set _settings(volumeEdges) $settings(-edges)
2171	set _settings(volumeLighting) $settings(-lighting)
2172	set _settings(volumeOpacity) $settings(-opacity)
2173	set _settings(volumeWireframe) $settings(-wireframe)
2174	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
2175	SetColormap $dataobj $comp
2176	}
2177
2178	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2179	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2180	return 0
2181	}
2182	return 1
2183	}
2184
2185	# ----------------------------------------------------------------------
2186	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2187	#
2188	# Invoked automatically whenever the "legend" command comes in from
2189	# the rendering server. Indicates that binary image data with the
2190	# specified <size> will follow.
2191	# ----------------------------------------------------------------------
2192	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2193	set _legendPending 0
2194	set _title $title
2195	regsub {\(mag\)} $title "" _title
2196	if { [IsConnected] } {
2197	set bytes [ReceiveBytes $size]
2198	if { ![info exists _image(legend)] } {
2199	set _image(legend) [image create photo]
2200	}
2201	$_image(legend) configure -data $bytes
2202	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2203	if { [catch {DrawLegend} errs] != 0 } {
2204	puts stderr errs=$errs
2205	}
2206	}
2207	}
2208
2209	#
2210	# DrawLegend --
2211	#
2212	# Draws the legend in it's own canvas which resides to the right
2213	# of the contour plot area.
2214	#
2215	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2216	set fname $_curFldName
2217	set c $itk_component(view)
2218	set w [winfo width $c]
2219	set h [winfo height $c]
2220	set font "Arial 8"
2221	set lineht [font metrics $font -linespace]
2222
2223	if { [info exists _fields($fname)] } {
2224	foreach { title units } $_fields($fname) break
2225	if { $units != "" } {
2226	set title [format "%s (%s)" $title $units]
2227	}
2228	} else {
2229	set title $fname
2230	}
2231	if { $_settings(legendVisible) } {
2232	set x [expr $w - 2]
2233	if { [$c find withtag "legend"] == "" } {
2234	set y 2
2235	$c create text $x $y \
2236	-anchor ne \
2237	-fill $itk_option(-plotforeground) -tags "title legend" \
2238	-font $font
2239	incr y $lineht
2240	$c create text $x $y \
2241	-anchor ne \
2242	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2243	-font $font
2244	incr y $lineht
2245	$c create image $x $y \
2246	-anchor ne \
2247	-image $_image(legend) -tags "colormap legend"
2248	$c create text $x [expr {$h-2}] \
2249	-anchor se \
2250	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2251	-font $font
2252	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2253	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2254	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2255	}
2256	$c bind title <ButtonPress> [itcl::code $this Combo post]
2257	$c bind title <Enter> [itcl::code $this Combo activate]
2258	$c bind title <Leave> [itcl::code $this Combo deactivate]
2259	# Reset the item coordinates according the current size of the plot.
2260	$c itemconfigure title -text $title
2261	if { [info exists _limits($_curFldName)] } {
2262	foreach {vmin vmax} $_limits($_curFldName) break
2263	$c itemconfigure vmin -text [format %g $vmin]
2264	$c itemconfigure vmax -text [format %g $vmax]
2265	}
2266	set y 2
2267	$c coords title $x $y
2268	incr y $lineht
2269	$c coords vmax $x $y
2270	incr y $lineht
2271	$c coords colormap $x $y
2272	$c coords vmin $x [expr {$h - 2}]
2273	}
2274	}
2275
2276	#
2277	# EnterLegend --
2278	#
2279	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2280	SetLegendTip $x $y
2281	}
2282
2283	#
2284	# MotionLegend --
2285	#
2286	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2287	Rappture::Tooltip::tooltip cancel
2288	set c $itk_component(view)
2289	SetLegendTip $x $y
2290	}
2291
2292	#
2293	# LeaveLegend --
2294	#
2295	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2296	Rappture::Tooltip::tooltip cancel
2297	.rappturetooltip configure -icon ""
2298	}
2299
2300	#
2301	# SetLegendTip --
2302	#
2303	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2304	set c $itk_component(view)
2305	set w [winfo width $c]
2306	set h [winfo height $c]
2307	set font "Arial 8"
2308	set lineht [font metrics $font -linespace]
2309
2310	set imgHeight [image height $_image(legend)]
2311	set coords [$c coords colormap]
2312	set imgX [expr $w - [image width $_image(legend)] - 2]
2313	set imgY [expr $y - 2 * ($lineht + 2)]
2314
2315	if { [info exists _fields($_title)] } {
2316	foreach { title units } $_fields($_title) break
2317	if { $units != "" } {
2318	set title [format "%s (%s)" $title $units]
2319	}
2320	} else {
2321	set title $_title
2322	}
2323	# Make a swatch of the selected color
2324	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2325	#puts stderr "out of range: $imgY"
2326	return
2327	}
2328	if { ![info exists _image(swatch)] } {
2329	set _image(swatch) [image create photo -width 24 -height 24]
2330	}
2331	set color [eval format "\#%02x%02x%02x" $pixel]
2332	$_image(swatch) put black -to 0 0 23 23
2333	$_image(swatch) put $color -to 1 1 22 22
2334	.rappturetooltip configure -icon $_image(swatch)
2335
2336	# Compute the value of the point
2337	if { [info exists _limits($_curFldName)] } {
2338	foreach {vmin vmax} $_limits($_curFldName) break
2339	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2340	set value [expr $t * ($vmax - $vmin) + $vmin]
2341	} else {
2342	set value 0.0
2343	}
2344	set tipx [expr $x + 15]
2345	set tipy [expr $y - 5]
2346	Rappture::Tooltip::text $c "$title $value"
2347	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2348	}
2349
2350	# ----------------------------------------------------------------------
2351	# USAGE: Slice move x\|y\|z <newval>
2352	#
2353	# Called automatically when the user drags the slider to move the
2354	# cut plane that slices 3D data. Gets the current value from the
2355	# slider and moves the cut plane to the appropriate point in the
2356	# data set.
2357	# ----------------------------------------------------------------------
2358	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2359	switch -- $option {
2360	"move" {
2361	set axis [lindex $args 0]
2362	set newval [lindex $args 1]
2363	if {[llength $args] != 2} {
2364	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2365	}
2366	set newpos [expr {0.01*$newval}]
2367	SendCmd "cutplane slice $axis $newpos"
2368	}
2369	"tooltip" {
2370	set axis [lindex $args 0]
2371	set val [$itk_component(${axis}CutScale) get]
2372	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2373	}
2374	default {
2375	error "bad option \"$option\": should be axis, move, or tooltip"
2376	}
2377	}
2378	}
2379
2380	# ----------------------------------------------------------------------
2381	# USAGE: _dropdown post
2382	# USAGE: _dropdown unpost
2383	# USAGE: _dropdown select
2384	#
2385	# Used internally to handle the dropdown list for this combobox. The
2386	# post/unpost options are invoked when the list is posted or unposted
2387	# to manage the relief of the controlling button. The select option
2388	# is invoked whenever there is a selection from the list, to assign
2389	# the value back to the gauge.
2390	# ----------------------------------------------------------------------
2391	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
2392	set c $itk_component(view)
2393	switch -- $option {
2394	post {
2395	foreach { x1 y1 x2 y2 } [$c bbox title] break
2396	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2397	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2398	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2399	tk_popup $itk_component(fieldmenu) $x $y
2400	}
2401	activate {
2402	$c itemconfigure title -fill red
2403	}
2404	deactivate {
2405	$c itemconfigure title -fill white
2406	}
2407	invoke {
2408	$itk_component(field) value $_curFldLabel
2409	AdjustSetting field
2410	}
2411	default {
2412	error "bad option \"$option\": should be post, unpost, select"
2413	}
2414	}
2415	}
2416
2417	itcl::body Rappture::VtkStreamlinesViewer::SetOrientation { side } {
2418	array set positions {
2419	front "1 0 0 0"
2420	back "0 0 1 0"
2421	left "0.707107 0 -0.707107 0"
2422	right "0.707107 0 0.707107 0"
2423	top "0.707107 -0.707107 0 0"
2424	bottom "0.707107 0.707107 0 0"
2425	}
2426	foreach name { qw qx qy qz } value $positions($side) {
2427	set _view($name) $value
2428	}
2429	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2430	$_arcball quaternion $q
2431	SendCmd "camera orient $q"
2432	SendCmd "camera reset"
2433	set _view(xpan) 0
2434	set _view(ypan) 0
2435	set _view(zoom) 1.0
2436	}

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