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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 2583

Last change on this file since 2583 was 2583, checked in by ldelgass, 13 years ago

Fix for reset in test app - don't try to get axis hints if $_first is empty
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M vtkstreamlinesviewer.tcl

File size: 70.2 KB

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1
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) 2004-2005 Purdue Research Foundation
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	package require vtk
18
19	option add *VtkStreamlinesViewer.width 4i widgetDefault
20	option add VtkStreamlinesViewercursor crosshair widgetDefault
21	option add *VtkStreamlinesViewer.height 4i widgetDefault
22	option add *VtkStreamlinesViewer.foreground black widgetDefault
23	option add *VtkStreamlinesViewer.controlBackground gray widgetDefault
24	option add *VtkStreamlinesViewer.controlDarkBackground #999999 widgetDefault
25	option add *VtkStreamlinesViewer.plotBackground black widgetDefault
26	option add *VtkStreamlinesViewer.plotForeground white widgetDefault
27	option add *VtkStreamlinesViewer.font \
28	--helvetica-medium-r-normal--12-* widgetDefault
29
30	# must use this name -- plugs into Rappture::resources::load
31	proc VtkStreamlinesViewer_init_resources {} {
32	Rappture::resources::register \
33	vtkvis_server Rappture::VtkStreamlinesViewer::SetServerList
34	}
35
36	itcl::class Rappture::VtkStreamlinesViewer {
37	inherit Rappture::VisViewer
38
39	itk_option define -plotforeground plotForeground Foreground ""
40	itk_option define -plotbackground plotBackground Background ""
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits { colormap }
61	public method sendto { string }
62	public method parameters {title args} {
63	# do nothing
64	}
65	public method scale {args}
66
67	protected method Connect {}
68	protected method CurrentDatasets {args}
69	protected method Disconnect {}
70	protected method DoResize {}
71	protected method DoRotate {}
72	protected method AdjustSetting {what {value ""}}
73	protected method FixSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title vmin vmax size }
80	protected method Rotate {option x y}
81	protected method SendCmd {string}
82	protected method Zoom {option}
83
84	# The following methods are only used by this class.
85	private method BuildAxisTab {}
86	private method BuildCameraTab {}
87	private method BuildColormap { colormap dataobj comp }
88	private method BuildCutawayTab {}
89	private method BuildDownloadPopup { widget command }
90	private method BuildStreamsTab {}
91	private method BuildVolumeTab {}
92	private method ConvertToVtkData { dataobj comp }
93	private method DrawLegend {}
94	private method EnterLegend { x y }
95	private method EventuallyResize { w h }
96	private method EventuallyRotate { q }
97	private method GetImage { args }
98	private method GetVtkData { args }
99	private method IsValidObject { dataobj }
100	private method LeaveLegend {}
101	private method MotionLegend { x y }
102	private method PanCamera {}
103	private method RequestLegend {}
104	private method SetColormap { dataobj comp }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method Slice {option args}
108
109	private variable _arcball ""
110	private variable _outbuf ;# buffer for outgoing commands
111
112	private variable _dlist "" ;# list of data objects
113	private variable _allDataObjs
114	private variable _obj2datasets
115	private variable _obj2ovride ;# maps dataobj => style override
116	private variable _datasets ;# contains all the dataobj-component
117	;# datasets in the server
118	private variable _colormaps ;# contains all the colormaps
119	;# in the server.
120	private variable _dataset2style ;# maps dataobj-component to transfunc
121	private variable _style2datasets ;# maps tf back to list of
122	# dataobj-components using the tf.
123
124	private variable _click ;# info used for rotate operations
125	private variable _limits ;# autoscale min/max for all axes
126	private variable _view ;# view params for 3D view
127	private variable _settings
128	private variable _volume
129	private variable _axis
130	private variable _streamlines
131	private variable _reset 1 ;# indicates if camera needs to be reset
132	# to starting position.
133
134	private variable _first "" ;# This is the topmost dataset.
135	private variable _start 0
136	private variable _buffering 0
137	private variable _title ""
138	private variable _seeds
139
140	common _downloadPopup ;# download options from popup
141	private common _hardcopy
142	private variable _width 0
143	private variable _height 0
144	private variable _resizePending 0
145	private variable _rotatePending 0
146	private variable _outline
147	}
148
149	itk::usual VtkStreamlinesViewer {
150	keep -background -foreground -cursor -font
151	keep -plotbackground -plotforeground
152	}
153
154	# ----------------------------------------------------------------------
155	# CONSTRUCTOR
156	# ----------------------------------------------------------------------
157	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
158	# Rebuild event
159	$_dispatcher register !rebuild
160	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
161
162	# Resize event
163	$_dispatcher register !resize
164	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
165
166	# Rotate event
167	$_dispatcher register !rotate
168	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
169
170	set _outbuf ""
171
172	#
173	# Populate parser with commands handle incoming requests
174	#
175	$_parser alias image [itcl::code $this ReceiveImage]
176	$_parser alias dataset [itcl::code $this ReceiveDataset]
177	$_parser alias legend [itcl::code $this ReceiveLegend]
178
179	array set _outline {
180	id -1
181	afterId -1
182	x1 -1
183	y1 -1
184	x2 -1
185	y2 -1
186	}
187	# Initialize the view to some default parameters.
188	array set _view {
189	qw 1
190	qx 0
191	qy 0
192	qz 0
193	zoom 1.0
194	xpan 0
195	ypan 0
196	ortho 0
197	}
198	set _arcball [blt::arcball create 100 100]
199	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
200	$_arcball quaternion $q
201
202	set _limits(zmin) 0.0
203	set _limits(zmax) 1.0
204
205	array set _axis [subst {
206	xgrid 0
207	ygrid 0
208	zgrid 0
209	xcutaway 0
210	ycutaway 0
211	zcutaway 0
212	xposition 0
213	yposition 0
214	zposition 0
215	xdirection -1
216	ydirection -1
217	zdirection -1
218	visible 1
219	labels 1
220	}]
221	array set _volume [subst {
222	edges 0
223	lighting 1
224	opacity 40
225	visible 1
226	wireframe 0
227	}]
228	array set _streamlines [subst {
229	seeds 0
230	visible 1
231	opacity 100
232	seeddensity 40
233	lighting 1
234	scale 1
235	}]
236	array set _settings [subst {
237	legend 1
238	}]
239
240	itk_component add view {
241	canvas $itk_component(plotarea).view \
242	-highlightthickness 0 -borderwidth 0
243	} {
244	usual
245	ignore -highlightthickness -borderwidth -background
246	}
247
248	set c $itk_component(view)
249	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
250	bind $c <4> [itcl::code $this Zoom in 0.25]
251	bind $c <5> [itcl::code $this Zoom out 0.25]
252	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
253	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
254	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
255	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
256	bind $c <Enter> "focus %W"
257
258	# Fix the scrollregion in case we go off screen
259	$c configure -scrollregion [$c bbox all]
260
261	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
262	set _map(cwidth) -1
263	set _map(cheight) -1
264	set _map(zoom) 1.0
265	set _map(original) ""
266
267	set f [$itk_component(main) component controls]
268	itk_component add reset {
269	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
270	-highlightthickness 0 \
271	-image [Rappture::icon reset-view] \
272	-command [itcl::code $this Zoom reset]
273	} {
274	usual
275	ignore -highlightthickness
276	}
277	pack $itk_component(reset) -side top -padx 2 -pady 2
278	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
279
280	itk_component add zoomin {
281	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
282	-highlightthickness 0 \
283	-image [Rappture::icon zoom-in] \
284	-command [itcl::code $this Zoom in]
285	} {
286	usual
287	ignore -highlightthickness
288	}
289	pack $itk_component(zoomin) -side top -padx 2 -pady 2
290	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
291
292	itk_component add zoomout {
293	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
294	-highlightthickness 0 \
295	-image [Rappture::icon zoom-out] \
296	-command [itcl::code $this Zoom out]
297	} {
298	usual
299	ignore -highlightthickness
300	}
301	pack $itk_component(zoomout) -side top -padx 2 -pady 2
302	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
303
304	if { [catch {
305	BuildVolumeTab
306	BuildStreamsTab
307	BuildAxisTab
308	BuildCutawayTab
309	BuildCameraTab
310	} errs] != 0 } {
311	puts stderr errs=$errs
312	}
313	# Legend
314
315	set _image(legend) [image create photo]
316	itk_component add legend {
317	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
318	} {
319	usual
320	ignore -highlightthickness
321	rename -background -plotbackground plotBackground Background
322	}
323
324	# Hack around the Tk panewindow. The problem is that the requested
325	# size of the 3d view isn't set until an image is retrieved from
326	# the server. So the panewindow uses the tiny size.
327	set w 10000
328	pack forget $itk_component(view)
329	blt::table $itk_component(plotarea) \
330	0,0 $itk_component(view) -fill both -reqwidth $w
331	blt::table configure $itk_component(plotarea) c1 -resize none
332
333	# Bindings for rotation via mouse
334	bind $itk_component(view) <ButtonPress-1> \
335	[itcl::code $this Rotate click %x %y]
336	bind $itk_component(view) <B1-Motion> \
337	[itcl::code $this Rotate drag %x %y]
338	bind $itk_component(view) <ButtonRelease-1> \
339	[itcl::code $this Rotate release %x %y]
340	bind $itk_component(view) <Configure> \
341	[itcl::code $this EventuallyResize %w %h]
342
343	if 0 {
344	bind $itk_component(view) <Configure> \
345	[itcl::code $this EventuallyResize %w %h]
346	}
347	# Bindings for panning via mouse
348	bind $itk_component(view) <ButtonPress-2> \
349	[itcl::code $this Pan click %x %y]
350	bind $itk_component(view) <B2-Motion> \
351	[itcl::code $this Pan drag %x %y]
352	bind $itk_component(view) <ButtonRelease-2> \
353	[itcl::code $this Pan release %x %y]
354
355	bind $itk_component(view) <ButtonRelease-3> \
356	[itcl::code $this Pick %x %y]
357
358	# Bindings for panning via keyboard
359	bind $itk_component(view) <KeyPress-Left> \
360	[itcl::code $this Pan set -10 0]
361	bind $itk_component(view) <KeyPress-Right> \
362	[itcl::code $this Pan set 10 0]
363	bind $itk_component(view) <KeyPress-Up> \
364	[itcl::code $this Pan set 0 -10]
365	bind $itk_component(view) <KeyPress-Down> \
366	[itcl::code $this Pan set 0 10]
367	bind $itk_component(view) <Shift-KeyPress-Left> \
368	[itcl::code $this Pan set -2 0]
369	bind $itk_component(view) <Shift-KeyPress-Right> \
370	[itcl::code $this Pan set 2 0]
371	bind $itk_component(view) <Shift-KeyPress-Up> \
372	[itcl::code $this Pan set 0 -2]
373	bind $itk_component(view) <Shift-KeyPress-Down> \
374	[itcl::code $this Pan set 0 2]
375
376	# Bindings for zoom via keyboard
377	bind $itk_component(view) <KeyPress-Prior> \
378	[itcl::code $this Zoom out]
379	bind $itk_component(view) <KeyPress-Next> \
380	[itcl::code $this Zoom in]
381
382	bind $itk_component(view) <Enter> "focus $itk_component(view)"
383
384	if {[string equal "x11" [tk windowingsystem]]} {
385	# Bindings for zoom via mouse
386	bind $itk_component(view) <4> [itcl::code $this Zoom out]
387	bind $itk_component(view) <5> [itcl::code $this Zoom in]
388	}
389
390	set _image(download) [image create photo]
391
392	eval itk_initialize $args
393	Connect
394	}
395
396	# ----------------------------------------------------------------------
397	# DESTRUCTOR
398	# ----------------------------------------------------------------------
399	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
400	Disconnect
401	$_dispatcher cancel !rebuild
402	$_dispatcher cancel !resize
403	$_dispatcher cancel !rotate
404	image delete $_image(plot)
405	image delete $_image(download)
406	catch { blt::arcball destroy $_arcball }
407	}
408
409	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
410	if { $_width < 2 } {
411	set _width 500
412	}
413	if { $_height < 2 } {
414	set _height 500
415	}
416	#puts stderr "DoResize screen size $_width $_height"
417	set _start [clock clicks -milliseconds]
418	#puts stderr "screen size request width=$_width height=$_height"
419	SendCmd "screen size $_width $_height"
420	RequestLegend
421
422	#SendCmd "imgflush"
423
424	# Must reset camera to have object scaling to take effect.
425	#SendCmd "camera reset"
426	#SendCmd "camera zoom $_view(zoom)"
427	set _resizePending 0
428	}
429
430	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
431	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
432	SendCmd "camera orient $q"
433	set _rotatePending 0
434	}
435
436	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
437	#puts stderr "EventuallyResize $w $h"
438	set _width $w
439	set _height $h
440	$_arcball resize $w $h
441	if { !$_resizePending } {
442	set _resizePending 1
443	$_dispatcher event -after 200 !resize
444	}
445	}
446
447	set rotate_delay 100
448
449	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
450	#puts stderr "EventuallyRotate $w $h"
451	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
452	if { !$_rotatePending } {
453	set _rotatePending 1
454	global rotate_delay
455	$_dispatcher event -after $rotate_delay !rotate
456	}
457	}
458
459	# ----------------------------------------------------------------------
460	# USAGE: add <dataobj> ?<settings>?
461	#
462	# Clients use this to add a data object to the plot. The optional
463	# <settings> are used to configure the plot. Allowed settings are
464	# -color, -brightness, -width, -linestyle, and -raise.
465	# ----------------------------------------------------------------------
466	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
467	array set params {
468	-color auto
469	-width 1
470	-linestyle solid
471	-brightness 0
472	-raise 0
473	-description ""
474	-param ""
475	-type ""
476	}
477	array set params $settings
478	set params(-description) ""
479	set params(-param) ""
480	foreach {opt val} $settings {
481	if {![info exists params($opt)]} {
482	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
483	}
484	set params($opt) $val
485	}
486	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
487	# can't handle -autocolors yet
488	set params(-color) black
489	}
490	set pos [lsearch -exact $dataobj $_dlist]
491	if {$pos < 0} {
492	lappend _dlist $dataobj
493	}
494	set _allDataObjs($dataobj) 1
495	set _obj2ovride($dataobj-color) $params(-color)
496	set _obj2ovride($dataobj-width) $params(-width)
497	set _obj2ovride($dataobj-raise) $params(-raise)
498	$_dispatcher event -idle !rebuild
499	}
500
501
502	# ----------------------------------------------------------------------
503	# USAGE: delete ?<dataobj1> <dataobj2> ...?
504	#
505	# Clients use this to delete a dataobj from the plot. If no dataobjs
506	# are specified, then all dataobjs are deleted. No data objects are
507	# deleted. They are only removed from the display list.
508	#
509	# ----------------------------------------------------------------------
510	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
511	if { [llength $args] == 0} {
512	set args $_dlist
513	}
514	# Delete all specified dataobjs
515	set changed 0
516	foreach dataobj $args {
517	set pos [lsearch -exact $_dlist $dataobj]
518	if { $pos < 0 } {
519	continue; # Don't know anything about it.
520	}
521	# Remove it from the dataobj list.
522	set _dlist [lreplace $_dlist $pos $pos]
523	foreach comp [$dataobj components] {
524	SendCmd "dataset visible 0 $dataobj-$comp"
525	}
526	array unset _obj2ovride $dataobj-*
527	# Append to the end of the dataobj list.
528	lappend _dlist $dataobj
529	set changed 1
530	}
531	# If anything changed, then rebuild the plot
532	if { $changed } {
533	$_dispatcher event -idle !rebuild
534	}
535	}
536
537	# ----------------------------------------------------------------------
538	# USAGE: get ?-objects?
539	# USAGE: get ?-visible?
540	# USAGE: get ?-image view?
541	#
542	# Clients use this to query the list of objects being plotted, in
543	# order from bottom to top of this result. The optional "-image"
544	# flag can also request the internal images being shown.
545	# ----------------------------------------------------------------------
546	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
547	if {[llength $args] == 0} {
548	set args "-objects"
549	}
550
551	set op [lindex $args 0]
552	switch -- $op {
553	"-objects" {
554	# put the dataobj list in order according to -raise options
555	set dlist {}
556	foreach dataobj $_dlist {
557	if { ![IsValidObject $dataobj] } {
558	continue
559	}
560	if {[info exists _obj2ovride($dataobj-raise)] &&
561	$_obj2ovride($dataobj-raise)} {
562	set dlist [linsert $dlist 0 $dataobj]
563	} else {
564	lappend dlist $dataobj
565	}
566	}
567	return $dlist
568	}
569	"-visible" {
570	set dlist {}
571	foreach dataobj $_dlist {
572	if { ![IsValidObject $dataobj] } {
573	continue
574	}
575	if { ![info exists _obj2ovride($dataobj-raise)] } {
576	# No setting indicates that the object isn't invisible.
577	continue
578	}
579	# Otherwise use the -raise parameter to put the object to
580	# the front of the list.
581	if { $_obj2ovride($dataobj-raise) } {
582	set dlist [linsert $dlist 0 $dataobj]
583	} else {
584	lappend dlist $dataobj
585	}
586	}
587	return $dlist
588	}
589	-image {
590	if {[llength $args] != 2} {
591	error "wrong # args: should be \"get -image view\""
592	}
593	switch -- [lindex $args end] {
594	view {
595	return $_image(plot)
596	}
597	default {
598	error "bad image name \"[lindex $args end]\": should be view"
599	}
600	}
601	}
602	default {
603	error "bad option \"$op\": should be -objects or -image"
604	}
605	}
606	}
607
608	# ----------------------------------------------------------------------
609	# USAGE: scale ?<data1> <data2> ...?
610	#
611	# Sets the default limits for the overall plot according to the
612	# limits of the data for all of the given <data> objects. This
613	# accounts for all objects--even those not showing on the screen.
614	# Because of this, the limits are appropriate for all objects as
615	# the user scans through data in the ResultSet viewer.
616	# ----------------------------------------------------------------------
617	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
618	array unset _limits
619	foreach dataobj $args {
620	set string [limits $dataobj]
621	if { $string == "" } {
622	continue
623	}
624	array set bounds $string
625	if {![info exists _limits(xmin)] \|\| $_limits(xmin) > $bounds(xmin)} {
626	set _limits(xmin) $bounds(xmin)
627	}
628	if {![info exists _limits(xmax)] \|\| $_limits(xmax) < $bounds(xmax)} {
629	set _limits(xmax) $bounds(xmax)
630	}
631
632	if {![info exists _limits(ymin)] \|\| $_limits(ymin) > $bounds(ymin)} {
633	set _limits(ymin) $bounds(ymin)
634	}
635	if {![info exists _limits(ymax)] \|\| $_limits(ymax) < $bounds(ymax)} {
636	set _limits(ymax) $bounds(ymax)
637	}
638
639	if {![info exists _limits(zmin)] \|\| $_limits(zmin) > $bounds(zmin)} {
640	set _limits(zmin) $bounds(zmin)
641	}
642	if {![info exists _limits(zmax)] \|\| $_limits(zmax) < $bounds(zmax)} {
643	set _limits(zmax) $bounds(zmax)
644	}
645	}
646	}
647
648	# ----------------------------------------------------------------------
649	# USAGE: download coming
650	# USAGE: download controls <downloadCommand>
651	# USAGE: download now
652	#
653	# Clients use this method to create a downloadable representation
654	# of the plot. Returns a list of the form {ext string}, where
655	# "ext" is the file extension (indicating the type of data) and
656	# "string" is the data itself.
657	# ----------------------------------------------------------------------
658	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
659	switch $option {
660	coming {
661	if {[catch {
662	blt::winop snap $itk_component(plotarea) $_image(download)
663	}]} {
664	$_image(download) configure -width 1 -height 1
665	$_image(download) put #000000
666	}
667	}
668	controls {
669	set popup .vtkviewerdownload
670	if { ![winfo exists .vtkviewerdownload] } {
671	set inner [BuildDownloadPopup $popup [lindex $args 0]]
672	} else {
673	set inner [$popup component inner]
674	}
675	set _downloadPopup(image_controls) $inner.image_frame
676	set num [llength [get]]
677	set num [expr {($num == 1) ? "1 result" : "$num results"}]
678	set word [Rappture::filexfer::label downloadWord]
679	$inner.summary configure -text "$word $num in the following format:"
680	update idletasks ;# Fix initial sizes
681	return $popup
682	}
683	now {
684	set popup .vtkviewerdownload
685	if {[winfo exists .vtkviewerdownload]} {
686	$popup deactivate
687	}
688	switch -- $_downloadPopup(format) {
689	"image" {
690	return [$this GetImage [lindex $args 0]]
691	}
692	"vtk" {
693	return [$this GetVtkData [lindex $args 0]]
694	}
695	}
696	return ""
697	}
698	default {
699	error "bad option \"$option\": should be coming, controls, now"
700	}
701	}
702	}
703
704	# ----------------------------------------------------------------------
705	# USAGE: Connect ?<host:port>,<host:port>...?
706	#
707	# Clients use this method to establish a connection to a new
708	# server, or to reestablish a connection to the previous server.
709	# Any existing connection is automatically closed.
710	# ----------------------------------------------------------------------
711	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
712	#puts stderr "Enter Connect: [info level -1]"
713	set _hosts [GetServerList "vtkvis"]
714	if { "" == $_hosts } {
715	return 0
716	}
717	set result [VisViewer::Connect $_hosts]
718	if { $result } {
719	#puts stderr "Connected to $_hostname sid=$_sid"
720	set w [winfo width $itk_component(view)]
721	set h [winfo height $itk_component(view)]
722	EventuallyResize $w $h
723	}
724	return $result
725	}
726
727	#
728	# isconnected --
729	#
730	# Indicates if we are currently connected to the visualization server.
731	#
732	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
733	return [VisViewer::IsConnected]
734	}
735
736	#
737	# disconnect --
738	#
739	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
740	Disconnect
741	set _reset 1
742	}
743
744	#
745	# Disconnect --
746	#
747	# Clients use this method to disconnect from the current rendering
748	# server.
749	#
750	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
751	VisViewer::Disconnect
752
753	# disconnected -- no more data sitting on server
754	set _outbuf ""
755	array unset _datasets
756	array unset _data
757	array unset _colormaps
758	}
759
760	#
761	# sendto --
762	#
763	itcl::body Rappture::VtkStreamlinesViewer::sendto { bytes } {
764	SendBytes "$bytes\n"
765	}
766
767	#
768	# SendCmd
769	#
770	# Send commands off to the rendering server. If we're currently
771	# sending data objects to the server, buffer the commands to be
772	# sent later.
773	#
774	itcl::body Rappture::VtkStreamlinesViewer::SendCmd {string} {
775	if { $_buffering } {
776	append _outbuf $string "\n"
777	} else {
778	SendBytes "$string\n"
779	}
780	}
781
782	# ----------------------------------------------------------------------
783	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
784	#
785	# Invoked automatically whenever the "image" command comes in from
786	# the rendering server. Indicates that binary image data with the
787	# specified <size> will follow.
788	# ----------------------------------------------------------------------
789	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
790	array set info {
791	-token "???"
792	-bytes 0
793	-type image
794	}
795	array set info $args
796	set bytes [ReceiveBytes $info(-bytes)]
797	if { $info(-type) == "image" } {
798	if 0 {
799	set f [open "last.ppm" "w"]
800	puts $f $bytes
801	close $f
802	}
803	$_image(plot) configure -data $bytes
804	set time [clock seconds]
805	set date [clock format $time]
806	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
807	if { $_start > 0 } {
808	set finish [clock clicks -milliseconds]
809	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
810	set _start 0
811	}
812	} elseif { $info(type) == "print" } {
813	set tag $this-print-$info(-token)
814	set _hardcopy($tag) $bytes
815	}
816	}
817
818	#
819	# ReceiveDataset --
820	#
821	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
822	if { ![isconnected] } {
823	return
824	}
825	set option [lindex $args 0]
826	switch -- $option {
827	"scalar" {
828	set option [lindex $args 1]
829	switch -- $option {
830	"world" {
831	foreach { x y z value tag } [lrange $args 2 end] break
832	}
833	"pixel" {
834	foreach { x y value tag } [lrange $args 2 end] break
835	}
836	}
837	}
838	"vector" {
839	set option [lindex $args 1]
840	switch -- $option {
841	"world" {
842	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
843	}
844	"pixel" {
845	foreach { x y vx vy vz tag } [lrange $args 2 end] break
846	}
847	}
848	}
849	"names" {
850	foreach { name } [lindex $args 1] {
851	#puts stderr "Dataset: $name"
852	}
853	}
854	default {
855	error "unknown dataset option \"$option\" from server"
856	}
857	}
858	}
859
860	# ----------------------------------------------------------------------
861	# USAGE: Rebuild
862	#
863	# Called automatically whenever something changes that affects the
864	# data in the widget. Clears any existing data and rebuilds the
865	# widget to display new data.
866	# ----------------------------------------------------------------------
867	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
868
869	set w [winfo width $itk_component(view)]
870	set h [winfo height $itk_component(view)]
871	if { $w < 2 \|\| $h < 2 } {
872	$_dispatcher event -idle !rebuild
873	return
874	}
875
876	# Turn on buffering of commands to the server. We don't want to
877	# be preempted by a server disconnect/reconnect (which automatically
878	# generates a new call to Rebuild).
879	set _buffering 1
880
881	set _width $w
882	set _height $h
883	$_arcball resize $w $h
884	DoResize
885	#
886	# Reset the camera and other view parameters
887	#
888	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
889	$_arcball quaternion $q
890	if {$_view(ortho)} {
891	SendCmd "camera mode ortho"
892	} else {
893	SendCmd "camera mode persp"
894	}
895	DoRotate
896	PanCamera
897	set _first [lindex [get -objects] 0]
898	if { $_reset \|\| $_first == "" } {
899	Zoom reset
900	set _reset 0
901	}
902	FixSettings axis-xgrid axis-ygrid axis-zgrid axis-mode \
903	axis-visible axis-labels \
904	streamlines-seeds streamlines-visible streamlines-opacity \
905	volume-edges volume-lighting volume-opacity volume-visible \
906	volume-wireframe
907
908	SendCmd "imgflush"
909
910	set _limits(zmin) ""
911	set _limits(zmax) ""
912	set _first ""
913	foreach dataobj [get -objects] {
914	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
915	set _first $dataobj
916	}
917	set _obj2datasets($dataobj) ""
918	foreach comp [$dataobj components] {
919	set tag $dataobj-$comp
920	if { ![info exists _datasets($tag)] } {
921	set bytes [$dataobj blob $comp]
922	set length [string length $bytes]
923	append _outbuf "dataset add $tag data follows $length\n"
924	append _outbuf $bytes
925	set _datasets($tag) 1
926	}
927	lappend _obj2datasets($dataobj) $tag
928	if { [info exists _obj2ovride($dataobj-raise)] } {
929	SendCmd "dataset visible 1 $tag"
930	} else {
931	SendCmd "dataset visible 0 $tag"
932	}
933	SetObjectStyle $dataobj $comp
934	}
935	}
936	if {"" != $_first} {
937	set location [$_first hints camera]
938	if { $location != "" } {
939	array set view $location
940	}
941
942	foreach axis { x y z } {
943	set label [$_first hints ${axis}label]
944	if { $label != "" } {
945	SendCmd "axis name $axis $label"
946	}
947	set units [$_first hints ${axis}units]
948	if { $units != "" } {
949	SendCmd "axis units $axis $units"
950	}
951	}
952	}
953
954	set _buffering 0; # Turn off buffering.
955
956	# Actually write the commands to the server socket. If it fails, we don't
957	# care. We're finished here.
958	blt::busy hold $itk_component(hull)
959	SendBytes $_outbuf;
960	blt::busy release $itk_component(hull)
961	set _outbuf ""; # Clear the buffer.
962	}
963
964	# ----------------------------------------------------------------------
965	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
966	#
967	# Returns a list of server IDs for the current datasets being displayed. This
968	# is normally a single ID, but it might be a list of IDs if the current data
969	# object has multiple components.
970	# ----------------------------------------------------------------------
971	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
972	set flag [lindex $args 0]
973	switch -- $flag {
974	"-all" {
975	if { [llength $args] > 1 } {
976	error "CurrentDatasets: can't specify dataobj after \"-all\""
977	}
978	set dlist [get -objects]
979	}
980	"-visible" {
981	if { [llength $args] > 1 } {
982	set dlist {}
983	set args [lrange $args 1 end]
984	foreach dataobj $args {
985	if { [info exists _obj2ovride($dataobj-raise)] } {
986	lappend dlist $dataobj
987	}
988	}
989	} else {
990	set dlist [get -visible]
991	}
992	}
993	default {
994	set dlist $args
995	}
996	}
997	set rlist ""
998	foreach dataobj $dlist {
999	foreach comp [$dataobj components] {
1000	set tag $dataobj-$comp
1001	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1002	lappend rlist $tag
1003	}
1004	}
1005	}
1006	return $rlist
1007	}
1008
1009	# ----------------------------------------------------------------------
1010	# USAGE: Zoom in
1011	# USAGE: Zoom out
1012	# USAGE: Zoom reset
1013	#
1014	# Called automatically when the user clicks on one of the zoom
1015	# controls for this widget. Changes the zoom for the current view.
1016	# ----------------------------------------------------------------------
1017	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
1018	switch -- $option {
1019	"in" {
1020	set _view(zoom) [expr {$_view(zoom)*1.25}]
1021	SendCmd "camera zoom $_view(zoom)"
1022	}
1023	"out" {
1024	set _view(zoom) [expr {$_view(zoom)*0.8}]
1025	SendCmd "camera zoom $_view(zoom)"
1026	}
1027	"reset" {
1028	array set _view {
1029	qw 1
1030	qx 0
1031	qy 0
1032	qz 0
1033	zoom 1.0
1034	xpan 0
1035	ypan 0
1036	}
1037	SendCmd "camera reset all"
1038	if { $_first != "" } {
1039	set location [$_first hints camera]
1040	if { $location != "" } {
1041	array set _view $location
1042	}
1043	}
1044	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1045	$_arcball quaternion $q
1046	DoRotate
1047	}
1048	}
1049	}
1050
1051	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
1052	set x $_view(xpan)
1053	set y $_view(ypan)
1054	SendCmd "camera pan $x $y"
1055	}
1056
1057
1058	# ----------------------------------------------------------------------
1059	# USAGE: Rotate click <x> <y>
1060	# USAGE: Rotate drag <x> <y>
1061	# USAGE: Rotate release <x> <y>
1062	#
1063	# Called automatically when the user clicks/drags/releases in the
1064	# plot area. Moves the plot according to the user's actions.
1065	# ----------------------------------------------------------------------
1066	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
1067	switch -- $option {
1068	"click" {
1069	$itk_component(view) configure -cursor fleur
1070	set _click(x) $x
1071	set _click(y) $y
1072	}
1073	"drag" {
1074	if {[array size _click] == 0} {
1075	Rotate click $x $y
1076	} else {
1077	set w [winfo width $itk_component(view)]
1078	set h [winfo height $itk_component(view)]
1079	if {$w <= 0 \|\| $h <= 0} {
1080	return
1081	}
1082
1083	if {[catch {
1084	# this fails sometimes for no apparent reason
1085	set dx [expr {double($x-$_click(x))/$w}]
1086	set dy [expr {double($y-$_click(y))/$h}]
1087	}]} {
1088	return
1089	}
1090	if { $dx == 0 && $dy == 0 } {
1091	return
1092	}
1093	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1094	EventuallyRotate $q
1095	set _click(x) $x
1096	set _click(y) $y
1097	}
1098	}
1099	"release" {
1100	Rotate drag $x $y
1101	$itk_component(view) configure -cursor ""
1102	catch {unset _click}
1103	}
1104	default {
1105	error "bad option \"$option\": should be click, drag, release"
1106	}
1107	}
1108	}
1109
1110	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
1111	foreach tag [CurrentDatasets -visible] {
1112	SendCmd "dataset getscalar pixel $x $y $tag"
1113	}
1114	}
1115
1116	# ----------------------------------------------------------------------
1117	# USAGE: $this Pan click x y
1118	# $this Pan drag x y
1119	# $this Pan release x y
1120	#
1121	# Called automatically when the user clicks on one of the zoom
1122	# controls for this widget. Changes the zoom for the current view.
1123	# ----------------------------------------------------------------------
1124	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
1125	switch -- $option {
1126	"set" {
1127	set w [winfo width $itk_component(view)]
1128	set h [winfo height $itk_component(view)]
1129	set x [expr $x / double($w)]
1130	set y [expr $y / double($h)]
1131	set _view(xpan) [expr $_view(xpan) + $x]
1132	set _view(ypan) [expr $_view(ypan) + $y]
1133	PanCamera
1134	return
1135	}
1136	"click" {
1137	set _click(x) $x
1138	set _click(y) $y
1139	$itk_component(view) configure -cursor hand1
1140	}
1141	"drag" {
1142	if { ![info exists _click(x)] } {
1143	set _click(x) $x
1144	}
1145	if { ![info exists _click(y)] } {
1146	set _click(y) $y
1147	}
1148	set w [winfo width $itk_component(view)]
1149	set h [winfo height $itk_component(view)]
1150	set dx [expr ($_click(x) - $x)/double($w)]
1151	set dy [expr ($_click(y) - $y)/double($h)]
1152	set _click(x) $x
1153	set _click(y) $y
1154	set _view(xpan) [expr $_view(xpan) - $dx]
1155	set _view(ypan) [expr $_view(ypan) - $dy]
1156	PanCamera
1157	}
1158	"release" {
1159	Pan drag $x $y
1160	$itk_component(view) configure -cursor ""
1161	}
1162	default {
1163	error "unknown option \"$option\": should set, click, drag, or release"
1164	}
1165	}
1166	}
1167
1168	# ----------------------------------------------------------------------
1169	# USAGE: FixSettings <what> ?<value>?
1170	#
1171	# Used internally to update rendering settings whenever parameters
1172	# change in the popup settings panel. Sends the new settings off
1173	# to the back end.
1174	# ----------------------------------------------------------------------
1175	itcl::body Rappture::VtkStreamlinesViewer::FixSettings { args } {
1176	foreach setting $args {
1177	AdjustSetting $setting
1178	}
1179	}
1180
1181	#
1182	# AdjustSetting --
1183	#
1184	# Changes/updates a specific setting in the widget. There are
1185	# usually user-setable option. Commands are sent to the render
1186	# server.
1187	#
1188	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
1189	if { ![isconnected] } {
1190	return
1191	}
1192	switch -- $what {
1193	"volume-opacity" {
1194	set val $_volume(opacity)
1195	set sval [expr { 0.01 * double($val) }]
1196	foreach dataset [CurrentDatasets -visible $_first] {
1197	SendCmd "polydata opacity $sval $dataset"
1198	}
1199	}
1200	"volume-wireframe" {
1201	set bool $_volume(wireframe)
1202	foreach dataset [CurrentDatasets -visible $_first] {
1203	SendCmd "polydata wireframe $bool $dataset"
1204	}
1205	}
1206	"volume-visible" {
1207	set bool $_volume(visible)
1208	foreach dataset [CurrentDatasets -visible $_first] {
1209	SendCmd "polydata visible $bool $dataset"
1210	}
1211	}
1212	"volume-lighting" {
1213	set bool $_volume(lighting)
1214	foreach dataset [CurrentDatasets -visible $_first] {
1215	SendCmd "polydata lighting $bool $dataset"
1216	}
1217	}
1218	"volume-edges" {
1219	set bool $_volume(edges)
1220	foreach dataset [CurrentDatasets -visible $_first] {
1221	SendCmd "polydata edges $bool $dataset"
1222	}
1223	}
1224	"axis-visible" {
1225	set bool $_axis(visible)
1226	SendCmd "axis visible all $bool"
1227	}
1228	"axis-labels" {
1229	set bool $_axis(labels)
1230	SendCmd "axis labels all $bool"
1231	}
1232	"axis-xgrid" {
1233	set bool $_axis(xgrid)
1234	SendCmd "axis grid x $bool"
1235	}
1236	"axis-ygrid" {
1237	set bool $_axis(ygrid)
1238	SendCmd "axis grid y $bool"
1239	}
1240	"axis-zgrid" {
1241	set bool $_axis(zgrid)
1242	SendCmd "axis grid z $bool"
1243	}
1244	"axis-mode" {
1245	set mode [$itk_component(axismode) value]
1246	set mode [$itk_component(axismode) translate $mode]
1247	SendCmd "axis flymode $mode"
1248	}
1249	"axis-xcutaway" - "axis-ycutaway" - "axis-zcutaway" {
1250	set axis [string range $what 5 5]
1251	set bool $_axis(${axis}cutaway)
1252	if { $bool } {
1253	set pos [expr $_axis(${axis}position) * 0.01]
1254	set dir $_axis(${axis}direction)
1255	$itk_component(${axis}CutScale) configure -state normal \
1256	-troughcolor white
1257	SendCmd "renderer clipplane $axis $pos $dir"
1258	} else {
1259	$itk_component(${axis}CutScale) configure -state disabled \
1260	-troughcolor grey82
1261	SendCmd "renderer clipplane $axis 1 -1"
1262	}
1263	}
1264	"axis-xposition" - "axis-yposition" - "axis-zposition" -
1265	"axis-xdirection" - "axis-ydirection" - "axis-zdirection" {
1266	set axis [string range $what 5 5]
1267	#set dir $_axis(${axis}direction)
1268	set pos [expr $_axis(${axis}position) * 0.01]
1269	SendCmd "renderer clipplane ${axis} $pos -1"
1270	}
1271	"streamlines-seeds" {
1272	set bool $_streamlines(seeds)
1273	foreach dataset [CurrentDatasets -visible $_first] {
1274	SendCmd "streamlines seed visible $bool $dataset"
1275	}
1276	}
1277	"streamlines-seeddensity" {
1278	set density [expr int($_streamlines(seeddensity) * 5.0)]
1279	foreach dataset [CurrentDatasets -visible $_first] {
1280	# This command works for either random or fmesh seeds
1281	SendCmd "streamlines seed numpts $density $dataset"
1282	}
1283	}
1284	"streamlines-visible" {
1285	set bool $_streamlines(visible)
1286	foreach dataset [CurrentDatasets -visible $_first] {
1287	SendCmd "streamlines visible $bool $dataset"
1288	}
1289	}
1290	"streamlines-mode" {
1291	set mode [$itk_component(streammode) value]
1292	foreach dataset [CurrentDatasets -visible $_first] {
1293	switch -- $mode {
1294	"lines" {
1295	SendCmd "streamlines lines $dataset"
1296	}
1297	"ribbons" {
1298	SendCmd "streamlines ribbons 1 0 $dataset"
1299	}
1300	"tubes" {
1301	SendCmd "streamlines tubes 5 1 $dataset"
1302	}
1303	}
1304	}
1305	}
1306	"streamlines-opacity" {
1307	set val $_streamlines(opacity)
1308	set sval [expr { 0.01 * double($val) }]
1309	foreach dataset [CurrentDatasets -visible $_first] {
1310	SendCmd "streamlines opacity $sval $dataset"
1311	}
1312	}
1313	"streamlines-scale" {
1314	set val $_streamlines(scale)
1315	set sval [expr { 0.01 * double($val) }]
1316	foreach dataset [CurrentDatasets -visible $_first] {
1317	SendCmd "streamlines scale $sval $sval $sval $dataset"
1318	}
1319	}
1320	"streamlines-lighting" {
1321	set bool $_streamlines(lighting)
1322	foreach dataset [CurrentDatasets -visible $_first] {
1323	SendCmd "streamlines lighting $bool $dataset"
1324	}
1325	}
1326	default {
1327	error "don't know how to fix $what"
1328	}
1329	}
1330	}
1331
1332	#
1333	# RequestLegend --
1334	#
1335	# Request a new legend from the server. The size of the legend
1336	# is determined from the height of the canvas. It will be rotated
1337	# to be vertical when drawn.
1338	#
1339	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
1340	#puts stderr "RequestLegend _first=$_first"
1341	#puts stderr "RequestLegend width=$_width height=$_height"
1342	set font "Arial 8"
1343	set lineht [font metrics $font -linespace]
1344	set c $itk_component(legend)
1345	set w 12
1346	set h [expr {$_height - 2 * ($lineht + 2)}]
1347	if { $h < 1} {
1348	return
1349	}
1350	# Set the legend on the first streamlines dataset.
1351	foreach dataset [CurrentDatasets -visible] {
1352	foreach {dataobj comp} [split $dataset -] break
1353	if { [info exists _dataset2style($dataset)] } {
1354	#puts stderr "RequestLegend w=$w h=$h"
1355	SendCmd "legend $_dataset2style($dataset) vmag {} $w $h 0"
1356	break;
1357	}
1358	}
1359	}
1360
1361	#
1362	# SetColormap --
1363	#
1364	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
1365	array set style {
1366	-color rainbow
1367	-levels 6
1368	-opacity 1.0
1369	}
1370	set tag $dataobj-$comp
1371	array set style [$dataobj style $comp]
1372	set colormap "$style(-color):$style(-levels):$style(-opacity)"
1373	if { [info exists _colormaps($colormap)] } {
1374	puts stderr "Colormap $colormap already built"
1375	return $colormap
1376	}
1377	if { ![info exists _dataset2style($tag)] } {
1378	set _dataset2style($tag) $colormap
1379	lappend _style2datasets($colormap) $tag
1380	}
1381	if { ![info exists _colormaps($colormap)] } {
1382	# Build the pseudo colormap if it doesn't exist.
1383	BuildColormap $colormap $dataobj $comp
1384	set _colormaps($colormap) 1
1385	}
1386	SendCmd "streamlines colormap $colormap $tag"
1387	return $colormap
1388	}
1389
1390	#
1391	# BuildColormap --
1392	#
1393	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { colormap dataobj comp } {
1394	array set style {
1395	-color rainbow
1396	-levels 6
1397	-opacity 1.0
1398	}
1399	array set style [$dataobj style $comp]
1400	if {$style(-color) == "rainbow"} {
1401	set style(-color) "white:yellow:green:cyan:blue:magenta"
1402	}
1403	set clist [split $style(-color) :]
1404	set cmap {}
1405	for {set i 0} {$i < [llength $clist]} {incr i} {
1406	set x [expr {double($i)/([llength $clist]-1)}]
1407	set color [lindex $clist $i]
1408	append cmap "$x [Color2RGB $color] "
1409	}
1410	if { [llength $cmap] == 0 } {
1411	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1412	}
1413	if { ![info exists _volume(opacity)] } {
1414	set _volume(opacity) $style(-opacity)
1415	}
1416	set max $_volume(opacity)
1417
1418	set wmap "0.0 1.0 1.0 1.0"
1419	SendCmd "colormap add $colormap { $cmap } { $wmap }"
1420	}
1421
1422	# ----------------------------------------------------------------------
1423	# CONFIGURATION OPTION: -plotbackground
1424	# ----------------------------------------------------------------------
1425	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
1426	if { [isconnected] } {
1427	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1428	SendCmd "screen bgcolor $r $g $b"
1429	}
1430	}
1431
1432	# ----------------------------------------------------------------------
1433	# CONFIGURATION OPTION: -plotforeground
1434	# ----------------------------------------------------------------------
1435	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
1436	if { [isconnected] } {
1437	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1438	#fix this!
1439	#SendCmd "color background $r $g $b"
1440	}
1441	}
1442
1443	itcl::body Rappture::VtkStreamlinesViewer::limits { dataobj } {
1444
1445	array unset _limits $dataobj-*
1446	foreach comp [$dataobj components] {
1447	set tag $dataobj-$comp
1448	if { ![info exists _limits($tag)] } {
1449	set data [$dataobj blob $comp]
1450	set tmpfile file[pid].vtk
1451	set f [open "$tmpfile" "w"]
1452	puts $f $data
1453	close $f
1454	set reader [vtkDataSetReader $tag-xvtkDataSetReader]
1455	$reader SetFileName $tmpfile
1456	$reader ReadAllNormalsOn
1457	$reader ReadAllScalarsOn
1458	$reader ReadAllVectorsOn
1459	$reader ReadAllFieldsOn
1460	$reader Update
1461	set output [$reader GetOutput]
1462	set _limits($tag) [$output GetBounds]
1463	set pointData [$output GetPointData]
1464	puts stderr "\#scalars=[$reader GetNumberOfScalarsInFile]"
1465	puts stderr "\#vectors=[$reader GetNumberOfVectorsInFile]"
1466	puts stderr "\#tensors=[$reader GetNumberOfTensorsInFile]"
1467	puts stderr "\#normals=[$reader GetNumberOfNormalsInFile]"
1468	puts stderr "\#fielddata=[$reader GetNumberOfFieldDataInFile]"
1469	puts stderr "fielddataname=[$reader GetFieldDataNameInFile 0]"
1470	set fieldData [$output GetFieldData]
1471	set pointData [$output GetPointData]
1472	puts stderr "field \#arrays=[$fieldData GetNumberOfArrays]"
1473	puts stderr "point \#arrays=[$pointData GetNumberOfArrays]"
1474	puts stderr "field \#components=[$fieldData GetNumberOfComponents]"
1475	puts stderr "point \#components=[$pointData GetNumberOfComponents]"
1476	puts stderr "field \#tuples=[$fieldData GetNumberOfTuples]"
1477	puts stderr "point \#tuples=[$pointData GetNumberOfTuples]"
1478	puts stderr "point \#scalars=[$pointData GetScalars]"
1479	puts stderr vectors=[$pointData GetVectors]
1480	rename $output ""
1481	rename $reader ""
1482	file delete $tmpfile
1483	}
1484	foreach { xMin xMax yMin yMax zMin zMax} $_limits($tag) break
1485	if {![info exists limits(xmin)] \|\| $limits(xmin) > $xMin} {
1486	set limits(xmin) $xMin
1487	}
1488	if {![info exists limits(xmax)] \|\| $limits(xmax) < $xMax} {
1489	set limits(xmax) $xMax
1490	}
1491	if {![info exists limits(ymin)] \|\| $limits(ymin) > $yMin} {
1492	set limits(ymin) $xMin
1493	}
1494	if {![info exists limits(ymax)] \|\| $limits(ymax) < $yMax} {
1495	set limits(ymax) $yMax
1496	}
1497	if {![info exists limits(zmin)] \|\| $limits(zmin) > $zMin} {
1498	set limits(zmin) $zMin
1499	}
1500	if {![info exists limits(zmax)] \|\| $limits(zmax) < $zMax} {
1501	set limits(zmax) $zMax
1502	}
1503	}
1504	return [array get limits]
1505	}
1506
1507	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
1508
1509	set fg [option get $itk_component(hull) font Font]
1510	#set bfg [option get $itk_component(hull) boldFont Font]
1511
1512	set inner [$itk_component(main) insert end \
1513	-title "Volume Settings" \
1514	-icon [Rappture::icon volume-on]]
1515	$inner configure -borderwidth 4
1516
1517	checkbutton $inner.volume \
1518	-text "Show Volume" \
1519	-variable [itcl::scope _volume(visible)] \
1520	-command [itcl::code $this AdjustSetting volume-visible] \
1521	-font "Arial 9"
1522
1523	checkbutton $inner.wireframe \
1524	-text "Show Wireframe" \
1525	-variable [itcl::scope _volume(wireframe)] \
1526	-command [itcl::code $this AdjustSetting volume-wireframe] \
1527	-font "Arial 9"
1528
1529	checkbutton $inner.lighting \
1530	-text "Enable Lighting" \
1531	-variable [itcl::scope _volume(lighting)] \
1532	-command [itcl::code $this AdjustSetting volume-lighting] \
1533	-font "Arial 9"
1534
1535	checkbutton $inner.edges \
1536	-text "Show Edges" \
1537	-variable [itcl::scope _volume(edges)] \
1538	-command [itcl::code $this AdjustSetting volume-edges] \
1539	-font "Arial 9"
1540
1541	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1542	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1543	-variable [itcl::scope _volume(opacity)] \
1544	-width 10 \
1545	-showvalue off \
1546	-command [itcl::code $this AdjustSetting volume-opacity]
1547
1548	blt::table $inner \
1549	0,0 $inner.volume -anchor w -pady 2 \
1550	1,0 $inner.wireframe -anchor w -pady 2 \
1551	2,0 $inner.lighting -anchor w -pady 2 \
1552	3,0 $inner.edges -anchor w -pady 2 \
1553	4,0 $inner.opacity_l -anchor w -pady 2 \
1554	5,0 $inner.opacity -fill x -pady 2
1555
1556	blt::table configure $inner r* c* -resize none
1557	blt::table configure $inner r6 c1 -resize expand
1558	}
1559
1560
1561	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
1562
1563	set fg [option get $itk_component(hull) font Font]
1564	#set bfg [option get $itk_component(hull) boldFont Font]
1565
1566	set inner [$itk_component(main) insert end \
1567	-title "Streams Settings" \
1568	-icon [Rappture::icon stream]]
1569	$inner configure -borderwidth 4
1570
1571	checkbutton $inner.streamlines \
1572	-text "Show Streamlines" \
1573	-variable [itcl::scope _streamlines(visible)] \
1574	-command [itcl::code $this AdjustSetting streamlines-visible] \
1575	-font "Arial 9"
1576
1577	checkbutton $inner.lighting \
1578	-text "Enable Lighting" \
1579	-variable [itcl::scope _streamlines(lighting)] \
1580	-command [itcl::code $this AdjustSetting streamlines-lighting] \
1581	-font "Arial 9"
1582
1583	checkbutton $inner.seeds \
1584	-text "Show Seeds" \
1585	-variable [itcl::scope _streamlines(seeds)] \
1586	-command [itcl::code $this AdjustSetting streamlines-seeds] \
1587	-font "Arial 9"
1588
1589	label $inner.mode_l -text "Mode" -font "Arial 9"
1590	itk_component add streammode {
1591	Rappture::Combobox $inner.mode -width 10 -editable no
1592	}
1593	$inner.mode choices insert end \
1594	"lines" "lines" \
1595	"ribbons" "ribbons" \
1596	"tubes" "tubes"
1597	$itk_component(streammode) value "lines"
1598	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlines-mode]
1599
1600	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1601	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1602	-variable [itcl::scope _streamlines(opacity)] \
1603	-width 10 \
1604	-showvalue off \
1605	-command [itcl::code $this AdjustSetting streamlines-opacity]
1606
1607	label $inner.density_l -text "Seed Density" -font "Arial 9"
1608	::scale $inner.density -from 1 -to 100 -orient horizontal \
1609	-variable [itcl::scope _streamlines(seeddensity)] \
1610	-width 10 \
1611	-showvalue off \
1612	-command [itcl::code $this AdjustSetting streamlines-seeddensity]
1613
1614	label $inner.scale_l -text "Scale" -font "Arial 9"
1615	::scale $inner.scale -from 1 -to 100 -orient horizontal \
1616	-variable [itcl::scope _streamlines(scale)] \
1617	-width 10 \
1618	-showvalue off \
1619	-command [itcl::code $this AdjustSetting streamlines-scale]
1620
1621	blt::table $inner \
1622	0,0 $inner.streamlines -anchor w -pady 2 -cspan 2 \
1623	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1624	2,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
1625	3,0 $inner.density_l -anchor w -pady 2 \
1626	4,0 $inner.density -fill x -pady 2 -cspan 2 \
1627	5,0 $inner.mode_l -anchor w -pady 2 \
1628	5,1 $inner.mode -anchor w -pady 2 \
1629	6,0 $inner.opacity_l -anchor w -pady 2 \
1630	7,0 $inner.opacity -fill x -pady 2 -cspan 2
1631
1632	blt::table configure $inner r* c* -resize none
1633	blt::table configure $inner r8 c1 c2 -resize expand
1634	}
1635
1636	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
1637
1638	set fg [option get $itk_component(hull) font Font]
1639	#set bfg [option get $itk_component(hull) boldFont Font]
1640
1641	set inner [$itk_component(main) insert end \
1642	-title "Axis Settings" \
1643	-icon [Rappture::icon axis1]]
1644	$inner configure -borderwidth 4
1645
1646	checkbutton $inner.visible \
1647	-text "Show Axes" \
1648	-variable [itcl::scope _axis(visible)] \
1649	-command [itcl::code $this AdjustSetting axis-visible] \
1650	-font "Arial 9"
1651
1652	checkbutton $inner.labels \
1653	-text "Show Axis Labels" \
1654	-variable [itcl::scope _axis(labels)] \
1655	-command [itcl::code $this AdjustSetting axis-labels] \
1656	-font "Arial 9"
1657
1658	checkbutton $inner.gridx \
1659	-text "Show X Grid" \
1660	-variable [itcl::scope _axis(xgrid)] \
1661	-command [itcl::code $this AdjustSetting axis-xgrid] \
1662	-font "Arial 9"
1663	checkbutton $inner.gridy \
1664	-text "Show Y Grid" \
1665	-variable [itcl::scope _axis(ygrid)] \
1666	-command [itcl::code $this AdjustSetting axis-ygrid] \
1667	-font "Arial 9"
1668	checkbutton $inner.gridz \
1669	-text "Show Z Grid" \
1670	-variable [itcl::scope _axis(zgrid)] \
1671	-command [itcl::code $this AdjustSetting axis-zgrid] \
1672	-font "Arial 9"
1673
1674	label $inner.mode_l -text "Mode" -font "Arial 9"
1675
1676	itk_component add axismode {
1677	Rappture::Combobox $inner.mode -width 10 -editable no
1678	}
1679	$inner.mode choices insert end \
1680	"static_triad" "static" \
1681	"closest_triad" "closest" \
1682	"furthest_triad" "furthest" \
1683	"outer_edges" "outer"
1684	$itk_component(axismode) value "static"
1685	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
1686
1687	blt::table $inner \
1688	0,0 $inner.visible -anchor w -cspan 2 \
1689	1,0 $inner.labels -anchor w -cspan 2 \
1690	2,0 $inner.gridx -anchor w -cspan 2 \
1691	3,0 $inner.gridy -anchor w -cspan 2 \
1692	4,0 $inner.gridz -anchor w -cspan 2 \
1693	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1694	6,0 $inner.mode -fill x -cspan 2
1695
1696	blt::table configure $inner r* c* -resize none
1697	blt::table configure $inner r7 c1 -resize expand
1698	}
1699
1700
1701	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
1702	set inner [$itk_component(main) insert end \
1703	-title "Camera Settings" \
1704	-icon [Rappture::icon camera]]
1705	$inner configure -borderwidth 4
1706
1707	set labels { qx qy qz qw xpan ypan zoom }
1708	set row 0
1709	foreach tag $labels {
1710	label $inner.${tag}label -text $tag -font "Arial 9"
1711	entry $inner.${tag} -font "Arial 9" -bg white \
1712	-textvariable [itcl::scope _view($tag)]
1713	bind $inner.${tag} <KeyPress-Return> \
1714	[itcl::code $this camera set ${tag}]
1715	blt::table $inner \
1716	$row,0 $inner.${tag}label -anchor e -pady 2 \
1717	$row,1 $inner.${tag} -anchor w -pady 2
1718	blt::table configure $inner r$row -resize none
1719	incr row
1720	}
1721	checkbutton $inner.ortho \
1722	-text "Orthographic Projection" \
1723	-variable [itcl::scope _view(ortho)] \
1724	-command [itcl::code $this camera set ortho] \
1725	-font "Arial 9"
1726	blt::table $inner \
1727	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
1728	blt::table configure $inner r$row -resize none
1729	incr row
1730
1731	blt::table configure $inner c0 c1 -resize none
1732	blt::table configure $inner c2 -resize expand
1733	blt::table configure $inner r$row -resize expand
1734	}
1735
1736	itcl::body Rappture::VtkStreamlinesViewer::BuildCutawayTab {} {
1737
1738	set fg [option get $itk_component(hull) font Font]
1739
1740	set inner [$itk_component(main) insert end \
1741	-title "Cutaway Along Axis" \
1742	-icon [Rappture::icon cutbutton]]
1743
1744	$inner configure -borderwidth 4
1745
1746	# X-value slicer...
1747	itk_component add xCutButton {
1748	Rappture::PushButton $inner.xbutton \
1749	-onimage [Rappture::icon x-cutplane] \
1750	-offimage [Rappture::icon x-cutplane] \
1751	-command [itcl::code $this AdjustSetting axis-xcutaway] \
1752	-variable [itcl::scope _axis(xcutaway)]
1753	}
1754	Rappture::Tooltip::for $itk_component(xCutButton) \
1755	"Toggle the X-axis cutaway on/off"
1756
1757	itk_component add xCutScale {
1758	::scale $inner.xval -from 100 -to 1 \
1759	-width 10 -orient vertical -showvalue yes \
1760	-borderwidth 1 -highlightthickness 0 \
1761	-command [itcl::code $this Slice move x] \
1762	-variable [itcl::scope _axis(xposition)]
1763	} {
1764	usual
1765	ignore -borderwidth -highlightthickness
1766	}
1767	# Set the default cutaway value before disabling the scale.
1768	$itk_component(xCutScale) set 100
1769	$itk_component(xCutScale) configure -state disabled
1770	Rappture::Tooltip::for $itk_component(xCutScale) \
1771	"@[itcl::code $this Slice tooltip x]"
1772
1773	itk_component add xDirButton {
1774	Rappture::PushButton $inner.xdir \
1775	-onimage [Rappture::icon arrow-down] \
1776	-onvalue -1 \
1777	-offimage [Rappture::icon arrow-up] \
1778	-offvalue 1 \
1779	-command [itcl::code $this AdjustSetting axis-xdirection] \
1780	-variable [itcl::scope _axis(xdirection)]
1781	}
1782	set _axis(xdirection) -1
1783	Rappture::Tooltip::for $itk_component(xDirButton) \
1784	"Toggle the direction of the X-axis cutaway"
1785
1786	# Y-value slicer...
1787	itk_component add yCutButton {
1788	Rappture::PushButton $inner.ybutton \
1789	-onimage [Rappture::icon y-cutplane] \
1790	-offimage [Rappture::icon y-cutplane] \
1791	-command [itcl::code $this AdjustSetting axis-ycutaway] \
1792	-variable [itcl::scope _axis(ycutaway)]
1793	}
1794	Rappture::Tooltip::for $itk_component(yCutButton) \
1795	"Toggle the Y-axis cutaway on/off"
1796
1797	itk_component add yCutScale {
1798	::scale $inner.yval -from 100 -to 1 \
1799	-width 10 -orient vertical -showvalue yes \
1800	-borderwidth 1 -highlightthickness 0 \
1801	-command [itcl::code $this Slice move y] \
1802	-variable [itcl::scope _axis(yposition)]
1803	} {
1804	usual
1805	ignore -borderwidth -highlightthickness
1806	}
1807	Rappture::Tooltip::for $itk_component(yCutScale) \
1808	"@[itcl::code $this Slice tooltip y]"
1809	# Set the default cutaway value before disabling the scale.
1810	$itk_component(yCutScale) set 100
1811	$itk_component(yCutScale) configure -state disabled
1812
1813	itk_component add yDirButton {
1814	Rappture::PushButton $inner.ydir \
1815	-onimage [Rappture::icon arrow-down] \
1816	-onvalue -1 \
1817	-offimage [Rappture::icon arrow-up] \
1818	-offvalue 1 \
1819	-command [itcl::code $this AdjustSetting axis-ydirection] \
1820	-variable [itcl::scope _axis(ydirection)]
1821	}
1822	Rappture::Tooltip::for $itk_component(yDirButton) \
1823	"Toggle the direction of the Y-axis cutaway"
1824	set _axis(ydirection) -1
1825
1826	# Z-value slicer...
1827	itk_component add zCutButton {
1828	Rappture::PushButton $inner.zbutton \
1829	-onimage [Rappture::icon z-cutplane] \
1830	-offimage [Rappture::icon z-cutplane] \
1831	-command [itcl::code $this AdjustSetting axis-zcutaway] \
1832	-variable [itcl::scope _axis(zcutaway)]
1833	}
1834	Rappture::Tooltip::for $itk_component(zCutButton) \
1835	"Toggle the Z-axis cutaway on/off"
1836
1837	itk_component add zCutScale {
1838	::scale $inner.zval -from 100 -to 1 \
1839	-width 10 -orient vertical -showvalue yes \
1840	-borderwidth 1 -highlightthickness 0 \
1841	-command [itcl::code $this Slice move z] \
1842	-variable [itcl::scope _axis(zposition)]
1843	} {
1844	usual
1845	ignore -borderwidth -highlightthickness
1846	}
1847	$itk_component(zCutScale) set 100
1848	$itk_component(zCutScale) configure -state disabled
1849	#$itk_component(zCutScale) configure -state disabled
1850	Rappture::Tooltip::for $itk_component(zCutScale) \
1851	"@[itcl::code $this Slice tooltip z]"
1852
1853	itk_component add zDirButton {
1854	Rappture::PushButton $inner.zdir \
1855	-onimage [Rappture::icon arrow-down] \
1856	-onvalue -1 \
1857	-offimage [Rappture::icon arrow-up] \
1858	-offvalue 1 \
1859	-command [itcl::code $this AdjustSetting axis-zdirection] \
1860	-variable [itcl::scope _axis(zdirection)]
1861	}
1862	set _axis(zdirection) -1
1863	Rappture::Tooltip::for $itk_component(zDirButton) \
1864	"Toggle the direction of the Z-axis cutaway"
1865
1866	blt::table $inner \
1867	0,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
1868	1,0 $itk_component(xCutScale) -fill y \
1869	0,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
1870	1,1 $itk_component(yCutScale) -fill y \
1871	0,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
1872	1,2 $itk_component(zCutScale) -fill y \
1873
1874	blt::table configure $inner r* c* -resize none
1875	blt::table configure $inner r1 c3 -resize expand
1876	}
1877
1878
1879
1880	#
1881	# camera --
1882	#
1883	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
1884	switch -- $option {
1885	"show" {
1886	puts [array get _view]
1887	}
1888	"set" {
1889	set who [lindex $args 0]
1890	set x $_view($who)
1891	set code [catch { string is double $x } result]
1892	if { $code != 0 \|\| !$result } {
1893	return
1894	}
1895	switch -- $who {
1896	"ortho" {
1897	if {$_view(ortho)} {
1898	SendCmd "camera mode ortho"
1899	} else {
1900	SendCmd "camera mode persp"
1901	}
1902	}
1903	"xpan" - "ypan" {
1904	PanCamera
1905	}
1906	"qx" - "qy" - "qz" - "qw" {
1907	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1908	$_arcball quaternion $q
1909	EventuallyRotate $q
1910	}
1911	"zoom" {
1912	SendCmd "camera zoom $_view(zoom)"
1913	}
1914	}
1915	}
1916	}
1917	}
1918
1919	itcl::body Rappture::VtkStreamlinesViewer::ConvertToVtkData { dataobj comp } {
1920	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
1921	set values [$dataobj values $comp]
1922	append out "# vtk DataFile Version 2.0 \n"
1923	append out "Test data \n"
1924	append out "ASCII \n"
1925	append out "DATASET STRUCTURED_POINTS \n"
1926	append out "DIMENSIONS $xN $yN 1 \n"
1927	append out "ORIGIN 0 0 0 \n"
1928	append out "SPACING 1 1 1 \n"
1929	append out "POINT_DATA [expr $xN * $yN] \n"
1930	append out "SCALARS field float 1 \n"
1931	append out "LOOKUP_TABLE default \n"
1932	append out [join $values "\n"]
1933	append out "\n"
1934	return $out
1935	}
1936
1937
1938	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
1939	set bytes ""
1940	foreach dataobj [get] {
1941	foreach comp [$dataobj components] {
1942	set tag $dataobj-$comp
1943	#set contents [ConvertToVtkData $dataobj $comp]
1944	set contents [$dataobj blob $comp]
1945	append bytes "$contents\n\n"
1946	}
1947	}
1948	return [list .txt $bytes]
1949	}
1950
1951	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
1952	if { [image width $_image(download)] > 0 &&
1953	[image height $_image(download)] > 0 } {
1954	set bytes [$_image(download) data -format "jpeg -quality 100"]
1955	set bytes [Rappture::encoding::decode -as b64 $bytes]
1956	return [list .jpg $bytes]
1957	}
1958	return ""
1959	}
1960
1961	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
1962	Rappture::Balloon $popup \
1963	-title "[Rappture::filexfer::label downloadWord] as..."
1964	set inner [$popup component inner]
1965	label $inner.summary -text "" -anchor w
1966	radiobutton $inner.vtk_button -text "VTK data file" \
1967	-variable [itcl::scope _downloadPopup(format)] \
1968	-font "Helvetica 9 " \
1969	-value vtk
1970	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1971	radiobutton $inner.image_button -text "Image File" \
1972	-variable [itcl::scope _downloadPopup(format)] \
1973	-value image
1974	Rappture::Tooltip::for $inner.image_button \
1975	"Save as digital image."
1976
1977	button $inner.ok -text "Save" \
1978	-highlightthickness 0 -pady 2 -padx 3 \
1979	-command $command \
1980	-compound left \
1981	-image [Rappture::icon download]
1982
1983	button $inner.cancel -text "Cancel" \
1984	-highlightthickness 0 -pady 2 -padx 3 \
1985	-command [list $popup deactivate] \
1986	-compound left \
1987	-image [Rappture::icon cancel]
1988
1989	blt::table $inner \
1990	0,0 $inner.summary -cspan 2 \
1991	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1992	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1993	4,1 $inner.cancel -width .9i -fill y \
1994	4,0 $inner.ok -padx 2 -width .9i -fill y
1995	blt::table configure $inner r3 -height 4
1996	blt::table configure $inner r4 -pady 4
1997	raise $inner.image_button
1998	$inner.vtk_button invoke
1999	return $inner
2000	}
2001
2002	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
2003	# Parse style string.
2004	set tag $dataobj-$comp
2005	set style [$dataobj style $comp]
2006	#puts stderr "style $dataobj-$comp \"$style\""
2007	if { $dataobj != $_first } {
2008	set settings(-wireframe) 1
2009	}
2010	array set settings {
2011	-color \#808080
2012	-edges 0
2013	-edgecolor black
2014	-linewidth 1.0
2015	-opacity 0.4
2016	-wireframe 0
2017	-lighting 1
2018	-seeds 1
2019	-seedcolor white
2020	-visible 1
2021	}
2022	array set settings $style
2023	SendCmd "streamlines add $tag"
2024	SendCmd "streamlines seed visible off $tag"
2025	set seeds [$dataobj hints seeds]
2026	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
2027	set length [string length $seeds]
2028	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
2029	SendCmd "$seeds"
2030	set _seeds($dataobj) 1
2031	}
2032	SendCmd "polydata add $tag"
2033	SendCmd "polydata edges $settings(-edges) $tag"
2034	set _volume(edges) $settings(-edges)
2035	SendCmd "polydata color [Color2RGB $settings(-color)] $tag"
2036	SendCmd "polydata lighting $settings(-lighting) $tag"
2037	set _volume(lighting) $settings(-lighting)
2038	SendCmd "polydata linecolor [Color2RGB $settings(-edgecolor)] $tag"
2039	SendCmd "polydata linewidth $settings(-linewidth) $tag"
2040	SendCmd "polydata opacity $settings(-opacity) $tag"
2041	set _volume(opacity) $settings(-opacity)
2042	SendCmd "polydata wireframe $settings(-wireframe) $tag"
2043	set _volume(wireframe) $settings(-wireframe)
2044	set _volume(opacity) [expr $settings(-opacity) * 100.0]
2045	SetColormap $dataobj $comp
2046	}
2047
2048	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
2049	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2050	return 0
2051	}
2052	return 1
2053	}
2054
2055	# ----------------------------------------------------------------------
2056	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2057	#
2058	# Invoked automatically whenever the "legend" command comes in from
2059	# the rendering server. Indicates that binary image data with the
2060	# specified <size> will follow.
2061	# ----------------------------------------------------------------------
2062	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
2063	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$vmin,$vmax size=$size"
2064	set _limits(vmin) $vmin
2065	set _limits(vmax) $vmax
2066	set _title $title
2067	if { [IsConnected] } {
2068	set bytes [ReceiveBytes $size]
2069	if { ![info exists _image(legend)] } {
2070	set _image(legend) [image create photo]
2071	}
2072	$_image(legend) configure -data $bytes
2073	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2074	DrawLegend
2075	}
2076	}
2077
2078	#
2079	# DrawLegend --
2080	#
2081	# Draws the legend in it's own canvas which resides to the right
2082	# of the contour plot area.
2083	#
2084	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
2085	set c $itk_component(view)
2086	set w [winfo width $c]
2087	set h [winfo height $c]
2088	set font "Arial 8"
2089	set lineht [font metrics $font -linespace]
2090
2091	if { $_settings(legend) } {
2092	set x [expr $w - 2]
2093	if { [$c find withtag "legend"] == "" } {
2094	$c create image $x [expr {$lineht+2}] \
2095	-anchor ne \
2096	-image $_image(legend) -tags "colormap legend"
2097	$c create text $x 2 \
2098	-anchor ne \
2099	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2100	-font $font
2101	$c create text $x [expr {$h-2}] \
2102	-anchor se \
2103	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2104	-font $font
2105	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2106	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2107	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2108	}
2109	# Reset the item coordinates according the current size of the plot.
2110	$c coords colormap $x [expr {$lineht+2}]
2111	if { $_limits(vmin) != "" } {
2112	$c itemconfigure vmin -text [format %g $_limits(vmin)]
2113	}
2114	if { $_limits(vmax) != "" } {
2115	$c itemconfigure vmax -text [format %g $_limits(vmax)]
2116	}
2117	$c coords vmin $x [expr {$h-2}]
2118	$c coords vmax $x 2
2119	}
2120	}
2121
2122	#
2123	# EnterLegend --
2124	#
2125	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
2126	SetLegendTip $x $y
2127	}
2128
2129	#
2130	# MotionLegend --
2131	#
2132	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
2133	Rappture::Tooltip::tooltip cancel
2134	set c $itk_component(view)
2135	SetLegendTip $x $y
2136	}
2137
2138	#
2139	# LeaveLegend --
2140	#
2141	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
2142	Rappture::Tooltip::tooltip cancel
2143	.rappturetooltip configure -icon ""
2144	}
2145
2146	#
2147	# SetLegendTip --
2148	#
2149	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
2150	set c $itk_component(view)
2151	set w [winfo width $c]
2152	set h [winfo height $c]
2153	set font "Arial 8"
2154	set lineht [font metrics $font -linespace]
2155
2156	set imgHeight [image height $_image(legend)]
2157	set coords [$c coords colormap]
2158	set imgX [expr $w - [image width $_image(legend)] - 2]
2159	set imgY [expr $y - $lineht - 2]
2160
2161	# Make a swatch of the selected color
2162	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2163	#puts stderr "out of range: $imgY"
2164	return
2165	}
2166	if { ![info exists _image(swatch)] } {
2167	set _image(swatch) [image create photo -width 24 -height 24]
2168	}
2169	set color [eval format "\#%02x%02x%02x" $pixel]
2170	$_image(swatch) put black -to 0 0 23 23
2171	$_image(swatch) put $color -to 1 1 22 22
2172	.rappturetooltip configure -icon $_image(swatch)
2173
2174	# Compute the value of the point
2175	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2176	#puts stderr "t=$t x=$x y=$y imgY=$imgY"
2177	set value [expr $t * ($_limits(vmax) - $_limits(vmin)) + $_limits(vmin)]
2178	set tipx [expr $x + 15]
2179	set tipy [expr $y - 5]
2180	#puts stderr "tipx=$tipx tipy=$tipy x=$x y=$y"
2181	Rappture::Tooltip::text $c "$_title $value"
2182	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2183	}
2184
2185
2186	# ----------------------------------------------------------------------
2187	# USAGE: Slice move x\|y\|z <newval>
2188	#
2189	# Called automatically when the user drags the slider to move the
2190	# cut plane that slices 3D data. Gets the current value from the
2191	# slider and moves the cut plane to the appropriate point in the
2192	# data set.
2193	# ----------------------------------------------------------------------
2194	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
2195	switch -- $option {
2196	"move" {
2197	set axis [lindex $args 0]
2198	set oldval $_axis(${axis}position)
2199	set newval [lindex $args 1]
2200	if {[llength $args] != 2} {
2201	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2202	}
2203	set newpos [expr {0.01*$newval}]
2204	SendCmd "renderer clipplane $axis $newpos -1"
2205	}
2206	"tooltip" {
2207	set axis [lindex $args 0]
2208	set val [$itk_component(${axis}CutScale) get]
2209	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2210	}
2211	default {
2212	error "bad option \"$option\": should be axis, move, or tooltip"
2213	}
2214	}
2215	}

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