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source: trunk/gui/scripts/flowvisviewer.tcl @ 5612

Last change on this file since 5612 was 5612, checked in by ldelgass, 9 years ago
Use type method of field in flowvisviewer to determine data format
File size: 103.7 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
6	# It connects to the Nanovis server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	package require Img
18
19	option add *FlowvisViewer.width 5i widgetDefault
20	option add FlowvisViewercursor crosshair widgetDefault
21	option add *FlowvisViewer.height 4i widgetDefault
22	option add *FlowvisViewer.foreground black widgetDefault
23	option add *FlowvisViewer.controlBackground gray widgetDefault
24	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
25	option add *FlowvisViewer.plotBackground black widgetDefault
26	option add *FlowvisViewer.plotForeground white widgetDefault
27	option add *FlowvisViewer.plotOutline gray widgetDefault
28	option add *FlowvisViewer.font \
29	--helvetica-medium-r-normal--12-* widgetDefault
30
31	# must use this name -- plugs into Rappture::resources::load
32	proc FlowvisViewer_init_resources {} {
33	Rappture::resources::register \
34	nanovis_server Rappture::FlowvisViewer::SetServerList
35	}
36
37	itcl::class Rappture::FlowvisViewer {
38	inherit Rappture::VisViewer
39
40	itk_option define -plotforeground plotForeground Foreground ""
41	itk_option define -plotbackground plotBackground Background ""
42	itk_option define -plotoutline plotOutline PlotOutline ""
43
44	constructor { hostlist args } {
45	Rappture::VisViewer::constructor $hostlist
46	} {
47	# defined below
48	}
49	destructor {
50	# defined below
51	}
52	public proc SetServerList { namelist } {
53	Rappture::VisViewer::SetServerList "nanovis" $namelist
54	}
55	public method add {dataobj {settings ""}}
56	public method camera {option args}
57	public method delete {args}
58	public method disconnect {}
59	public method download {option args}
60	public method flow {option}
61	public method get {args}
62	public method isconnected {}
63	public method limits { cname }
64	public method overMarker { m x }
65	public method parameters {title args} {
66	# do nothing
67	}
68	public method removeDuplicateMarker { m x }
69	public method scale {args}
70	public method updateTransferFunctions {}
71
72	# The following methods are only used by this class.
73	private method AddIsoMarker { x y }
74	private method AdjustSetting {what {value ""}}
75	private method BuildCameraTab {}
76	private method BuildCutplanesTab {}
77	private method BuildDownloadPopup { widget command }
78	private method BuildViewTab {}
79	private method BuildVolumeComponents {}
80	private method BuildVolumeTab {}
81	private method ComputeTransferFunction { tf }
82	private method Connect {}
83	private method CurrentDatasets {{what -all}}
84	private method Disconnect {}
85	private method DoResize {}
86	private method DrawLegend { tf }
87	private method EventuallyGoto { nSteps }
88	private method EventuallyRedrawLegend { }
89	private method EventuallyResize { w h }
90	private method FixLegend {}
91	private method GetDatasetsWithComponent { cname }
92	private method GetFlowInfo { widget }
93	private method GetImage { args }
94	private method GetMovie { widget width height }
95	private method GetPngImage { widget width height }
96	private method GetVtkData { args }
97	private method InitSettings { args }
98	private method NameTransferFunction { dataobj comp }
99	private method Pan {option x y}
100	private method PanCamera {}
101	private method ParseLevelsOption { tf levels }
102	private method ParseMarkersOption { tf markers }
103	private method QuaternionToView { q } {
104	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
105	}
106	private method Rebuild {}
107	private method ReceiveData { args }
108	private method ReceiveImage { args }
109	private method ReceiveLegend { tf vmin vmax size }
110	private method Rotate {option x y}
111	private method SendFlowCmd { dataobj comp nbytes numComponents }
112	private method SendTransferFunctions {}
113	private method SetOrientation { side }
114	private method Slice {option args}
115	private method SlicerTip {axis}
116	private method ViewToQuaternion {} {
117	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
118	}
119	private method WaitIcon { option widget }
120	private method Zoom {option}
121	private method arrows { tag name }
122	private method box { tag name }
123	private method millisecs2str { value }
124	private method particles { tag name }
125	private method str2millisecs { value }
126	private method streams { tag name }
127
128	private variable _arcball ""
129	private variable _dlist "" ;# list of data objects
130	private variable _obj2ovride ;# maps dataobj => style override
131	private variable _serverDatasets ;# contains all the dataobj-component
132	;# to volumes in the server
133	private variable _recvdDatasets ;# list of data objs to send to server
134	private variable _dataset2style ;# maps dataobj-component to transfunc
135	private variable _style2datasets ;# maps tf back to list of
136	;# dataobj-components using the tf.
137	private variable _dataset2flow ;# Maps dataobj-component to a flow.
138
139	private variable _reset 1 ;# Connection to server has been reset.
140	private variable _click ;# Info used for rotate operations.
141	private variable _limits ;# Autoscale min/max for all axes
142	private variable _view ;# View params for 3D view
143	private variable _isomarkers ;# array of isosurface level values 0..1
144	private variable _settings
145	private variable _activeTf "" ;# Currently active transfer function
146	private variable _first "" ;# This is the topmost volume.
147	private variable _volcomponents ;# Maps component name to list of
148	;# dataobj-component tags
149	private variable _componentsList ;# List of components found
150	private variable _nextToken 0
151	private variable _icon 0
152	private variable _flow
153	private variable _width 0
154	private variable _height 0
155	private variable _resizePending 0
156	private variable _resizeLegendPending 0
157	private variable _gotoPending 0
158
159	private common _downloadPopup ;# download options from popup
160	private common _hardcopy
161	}
162
163	itk::usual FlowvisViewer {
164	keep -background -foreground -cursor -font
165	keep -plotbackground -plotforeground
166	}
167
168	# ----------------------------------------------------------------------
169	# CONSTRUCTOR
170	# ----------------------------------------------------------------------
171	itcl::body Rappture::FlowvisViewer::constructor {hostlist args} {
172	set _serverType "nanovis"
173
174	# Draw legend event
175	$_dispatcher register !legend
176	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
177
178	# Send transfer functions event
179	$_dispatcher register !send_transfunc
180	$_dispatcher dispatch $this !send_transfunc \
181	"[itcl::code $this SendTransferFunctions]; list"
182
183	# Rebuild event
184	$_dispatcher register !rebuild
185	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
186
187	# Resize event
188	$_dispatcher register !resize
189	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
190
191	$_dispatcher register !play
192	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
193
194	$_dispatcher register !goto
195	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
196
197	$_dispatcher register !movietimeout
198	$_dispatcher register !waiticon
199
200	set _flow(state) 0
201
202	array set _downloadPopup {
203	format vtk
204	}
205	#
206	# Populate parser with commands handle incoming requests
207	#
208	$_parser alias image [itcl::code $this ReceiveImage]
209	$_parser alias legend [itcl::code $this ReceiveLegend]
210	$_parser alias data [itcl::code $this ReceiveData]
211
212	# Initialize the view to some default parameters.
213	array set _view {
214	-qw 0.853553
215	-qx -0.353553
216	-qy 0.353553
217	-qz 0.146447
218	-xpan 0
219	-ypan 0
220	-zoom 1.0
221	}
222	set _arcball [blt::arcball create 100 100]
223	$_arcball quaternion [ViewToQuaternion]
224
225	set _limits(v) [list 0.0 1.0]
226	set _reset 1
227
228	array set _settings [subst {
229	-ambient 60
230	-arrows 0
231	-axesvisible 0
232	-background black
233	-colormap BCGYR
234	-currenttime 0
235	-cutplanesvisible 0
236	-diffuse 40
237	-duration 1:00
238	-gridvisible 0
239	-isosurfaceshading 0
240	-legendvisible 1
241	-lic 1
242	-light2side 1
243	-loop 0
244	-opacity 50
245	-outlinevisible 1
246	-particles 1
247	-play 0
248	-qw $_view(-qw)
249	-qx $_view(-qx)
250	-qy $_view(-qy)
251	-qz $_view(-qz)
252	-specularexponent 90
253	-specularlevel 30
254	-speed 500
255	-step 0
256	-streams 0
257	-thickness 350
258	-volume 1
259	-xcutplaneposition 50
260	-xcutplanevisible 1
261	-xpan $_view(-xpan)
262	-ycutplaneposition 50
263	-ycutplanevisible 1
264	-ypan $_view(-ypan)
265	-zcutplaneposition 50
266	-zcutplanevisible 1
267	-zoom $_view(-zoom)
268	}]
269
270	itk_component add 3dview {
271	label $itk_component(plotarea).view -image $_image(plot) \
272	-highlightthickness 0 -borderwidth 0
273	} {
274	usual
275	ignore -highlightthickness -borderwidth -background
276	}
277	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
278
279	set f [$itk_component(main) component controls]
280	itk_component add reset {
281	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
282	-highlightthickness 0 \
283	-image [Rappture::icon reset-view] \
284	-command [itcl::code $this Zoom reset]
285	} {
286	usual
287	ignore -highlightthickness
288	}
289	pack $itk_component(reset) -side top -padx 2 -pady 2
290	Rappture::Tooltip::for $itk_component(reset) \
291	"Reset the view to the default zoom level"
292
293	itk_component add zoomin {
294	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon zoom-in] \
297	-command [itcl::code $this Zoom in]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(zoomin) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
304
305	itk_component add zoomout {
306	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-out] \
309	-command [itcl::code $this Zoom out]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomout) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
316
317	itk_component add volume {
318	Rappture::PushButton $f.volume \
319	-onimage [Rappture::icon volume-on] \
320	-offimage [Rappture::icon volume-off] \
321	-command [itcl::code $this AdjustSetting -volume] \
322	-variable [itcl::scope _settings(-volume)]
323	}
324	$itk_component(volume) select
325	Rappture::Tooltip::for $itk_component(volume) \
326	"Toggle the volume cloud on/off"
327	pack $itk_component(volume) -padx 2 -pady 2
328
329	itk_component add cutplane {
330	Rappture::PushButton $f.cutplane \
331	-onimage [Rappture::icon cutbutton] \
332	-offimage [Rappture::icon cutbutton] \
333	-variable [itcl::scope _settings(-cutplanesvisible)] \
334	-command [itcl::code $this AdjustSetting -cutplanesvisible]
335	}
336	Rappture::Tooltip::for $itk_component(cutplane) \
337	"Show/Hide cutplanes"
338	pack $itk_component(cutplane) -padx 2 -pady 2
339
340	if { [catch {
341	BuildViewTab
342	BuildVolumeTab
343	BuildCutplanesTab
344	BuildCameraTab
345	} errs] != 0 } {
346	global errorInfo
347	puts stderr "errs=$errs errorInfo=$errorInfo"
348	}
349
350	# Legend
351	set _image(legend) [image create photo]
352	itk_component add legend {
353	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
354	} {
355	usual
356	ignore -highlightthickness
357	rename -background -plotbackground plotBackground Background
358	}
359	bind $itk_component(legend) <Configure> \
360	[itcl::code $this EventuallyRedrawLegend]
361
362	# Hack around the Tk panewindow. The problem is that the requested
363	# size of the 3d view isn't set until an image is retrieved from
364	# the server. So the panewindow uses the tiny size.
365	set w 10000
366	pack forget $itk_component(3dview)
367	blt::table $itk_component(plotarea) \
368	0,0 $itk_component(3dview) -fill both -reqwidth $w \
369	1,0 $itk_component(legend) -fill x
370	blt::table configure $itk_component(plotarea) r1 -resize none
371
372	# Create flow controls...
373	itk_component add flowcontrols {
374	frame $itk_interior.flowcontrols
375	} {
376	usual
377	rename -background -controlbackground controlBackground Background
378	}
379	pack forget $itk_component(main)
380	blt::table $itk_interior \
381	0,0 $itk_component(main) -fill both \
382	1,0 $itk_component(flowcontrols) -fill x
383	blt::table configure $itk_interior r1 -resize none
384
385	# Rewind
386	itk_component add rewind {
387	button $itk_component(flowcontrols).reset \
388	-borderwidth 1 -padx 1 -pady 1 \
389	-image [Rappture::icon flow-rewind] \
390	-command [itcl::code $this flow reset]
391	} {
392	usual
393	ignore -borderwidth
394	rename -highlightbackground -controlbackground controlBackground \
395	Background
396	}
397	Rappture::Tooltip::for $itk_component(rewind) \
398	"Rewind flow"
399
400	# Stop
401	itk_component add stop {
402	button $itk_component(flowcontrols).stop \
403	-borderwidth 1 -padx 1 -pady 1 \
404	-image [Rappture::icon flow-stop] \
405	-command [itcl::code $this flow stop]
406	} {
407	usual
408	ignore -borderwidth
409	rename -highlightbackground -controlbackground controlBackground \
410	Background
411	}
412	Rappture::Tooltip::for $itk_component(stop) \
413	"Stop flow"
414
415	# Play
416	itk_component add play {
417	Rappture::PushButton $itk_component(flowcontrols).play \
418	-onimage [Rappture::icon flow-pause] \
419	-offimage [Rappture::icon flow-play] \
420	-variable [itcl::scope _settings(-play)] \
421	-command [itcl::code $this flow toggle]
422	}
423	set fg [option get $itk_component(hull) font Font]
424	Rappture::Tooltip::for $itk_component(play) \
425	"Play/Pause flow"
426
427	# Loop
428	itk_component add loop {
429	Rappture::PushButton $itk_component(flowcontrols).loop \
430	-onimage [Rappture::icon flow-loop] \
431	-offimage [Rappture::icon flow-loop] \
432	-variable [itcl::scope _settings(-loop)]
433	}
434	Rappture::Tooltip::for $itk_component(loop) \
435	"Play continuously"
436
437	itk_component add dial {
438	Rappture::Flowdial $itk_component(flowcontrols).dial \
439	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
440	-linecolor "" -activelinecolor "" \
441	-min 0.0 -max 1.0 \
442	-variable [itcl::scope _settings(-currenttime)] \
443	-knobimage [Rappture::icon knob2] -knobposition center@middle
444	} {
445	usual
446	ignore -dialprogresscolor
447	rename -background -controlbackground controlBackground Background
448	}
449	$itk_component(dial) current 0.0
450	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
451	# Duration
452	itk_component add duration {
453	entry $itk_component(flowcontrols).duration \
454	-textvariable [itcl::scope _settings(-duration)] \
455	-bg white -width 6 -font "arial 9"
456	} {
457	usual
458	ignore -highlightthickness -background
459	}
460	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
461	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
462	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
463	Rappture::Tooltip::for $itk_component(duration) \
464	"Set duration of flow (format is min:sec)"
465
466	itk_component add durationlabel {
467	label $itk_component(flowcontrols).durationl \
468	-text "Duration:" -font $fg \
469	-highlightthickness 0
470	} {
471	usual
472	ignore -highlightthickness
473	rename -background -controlbackground controlBackground Background
474	}
475
476	itk_component add speedlabel {
477	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
478	-highlightthickness 0
479	} {
480	usual
481	ignore -highlightthickness
482	rename -background -controlbackground controlBackground Background
483	}
484
485	# Speed
486	itk_component add speed {
487	Rappture::Flowspeed $itk_component(flowcontrols).speed \
488	-min 1 -max 10 -width 3 -font "arial 9"
489	} {
490	usual
491	ignore -highlightthickness
492	rename -background -controlbackground controlBackground Background
493	}
494	Rappture::Tooltip::for $itk_component(speed) \
495	"Change speed of flow"
496
497	$itk_component(speed) value 1
498	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
499
500
501	blt::table $itk_component(flowcontrols) \
502	0,0 $itk_component(rewind) -padx {3 0} \
503	0,1 $itk_component(stop) -padx {2 0} \
504	0,2 $itk_component(play) -padx {2 0} \
505	0,3 $itk_component(loop) -padx {2 0} \
506	0,4 $itk_component(dial) -fill x -padx {2 0 } \
507	0,5 $itk_component(duration) -padx { 0 0} \
508	0,7 $itk_component(speed) -padx {2 3}
509
510	# 0,6 $itk_component(speedlabel) -padx {2 0}
511	blt::table configure $itk_component(flowcontrols) c* -resize none
512	blt::table configure $itk_component(flowcontrols) c4 -resize both
513	blt::table configure $itk_component(flowcontrols) r0 -pady 1
514	# Bindings for rotation via mouse
515	bind $itk_component(3dview) <ButtonPress-1> \
516	[itcl::code $this Rotate click %x %y]
517	bind $itk_component(3dview) <B1-Motion> \
518	[itcl::code $this Rotate drag %x %y]
519	bind $itk_component(3dview) <ButtonRelease-1> \
520	[itcl::code $this Rotate release %x %y]
521
522	bind $itk_component(3dview) <Configure> \
523	[itcl::code $this EventuallyResize %w %h]
524
525	# Bindings for panning via mouse
526	bind $itk_component(3dview) <ButtonPress-2> \
527	[itcl::code $this Pan click %x %y]
528	bind $itk_component(3dview) <B2-Motion> \
529	[itcl::code $this Pan drag %x %y]
530	bind $itk_component(3dview) <ButtonRelease-2> \
531	[itcl::code $this Pan release %x %y]
532
533	# Bindings for panning via keyboard
534	bind $itk_component(3dview) <KeyPress-Left> \
535	[itcl::code $this Pan set -10 0]
536	bind $itk_component(3dview) <KeyPress-Right> \
537	[itcl::code $this Pan set 10 0]
538	bind $itk_component(3dview) <KeyPress-Up> \
539	[itcl::code $this Pan set 0 -10]
540	bind $itk_component(3dview) <KeyPress-Down> \
541	[itcl::code $this Pan set 0 10]
542	bind $itk_component(3dview) <Shift-KeyPress-Left> \
543	[itcl::code $this Pan set -2 0]
544	bind $itk_component(3dview) <Shift-KeyPress-Right> \
545	[itcl::code $this Pan set 2 0]
546	bind $itk_component(3dview) <Shift-KeyPress-Up> \
547	[itcl::code $this Pan set 0 -2]
548	bind $itk_component(3dview) <Shift-KeyPress-Down> \
549	[itcl::code $this Pan set 0 2]
550
551	# Bindings for zoom via keyboard
552	bind $itk_component(3dview) <KeyPress-Prior> \
553	[itcl::code $this Zoom out]
554	bind $itk_component(3dview) <KeyPress-Next> \
555	[itcl::code $this Zoom in]
556
557	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
558
559	if {[string equal "x11" [tk windowingsystem]]} {
560	# Bindings for zoom via mouse
561	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
562	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
563	}
564
565	set _image(download) [image create photo]
566
567	eval itk_initialize $args
568
569	EnableWaitDialog 900
570	Connect
571	}
572
573	# ----------------------------------------------------------------------
574	# DESTRUCTOR
575	# ----------------------------------------------------------------------
576	itcl::body Rappture::FlowvisViewer::destructor {} {
577	$_dispatcher cancel !rebuild
578	$_dispatcher cancel !send_transfunc
579	$_dispatcher cancel !resize
580	image delete $_image(plot)
581	image delete $_image(legend)
582	image delete $_image(download)
583	catch { blt::arcball destroy $_arcball }
584	array unset _settings
585	}
586
587	# ----------------------------------------------------------------------
588	# USAGE: add <dataobj> ?<settings>?
589	#
590	# Clients use this to add a data object to the plot. The optional
591	# <settings> are used to configure the plot. Allowed settings are
592	# -color, -brightness, -width, -linestyle, and -raise.
593	# ----------------------------------------------------------------------
594	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
595	array set params {
596	-color auto
597	-width 1
598	-linestyle solid
599	-brightness 0
600	-raise 0
601	-description ""
602	-param ""
603	}
604	array set params $settings
605
606	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
607	# can't handle -autocolors yet
608	set params(-color) black
609	}
610	foreach cname [$dataobj components] {
611	set flowobj [$dataobj flowhints $cname]
612	if { $flowobj == "" } {
613	puts stderr "no flowhints $dataobj-$cname"
614	continue
615	}
616	set _dataset2flow($dataobj-$cname) $flowobj
617	}
618	set pos [lsearch -exact $_dlist $dataobj]
619	if {$pos < 0} {
620	lappend _dlist $dataobj
621	set _obj2ovride($dataobj-color) $params(-color)
622	set _obj2ovride($dataobj-width) $params(-width)
623	set _obj2ovride($dataobj-raise) $params(-raise)
624	$_dispatcher event -idle !rebuild
625	}
626	}
627
628	# ----------------------------------------------------------------------
629	# USAGE: get ?-objects?
630	# USAGE: get ?-image 3dview\|legend?
631	#
632	# Clients use this to query the list of objects being plotted, in
633	# order from bottom to top of this result. The optional "-image"
634	# flag can also request the internal images being shown.
635	# ----------------------------------------------------------------------
636	itcl::body Rappture::FlowvisViewer::get {args} {
637	if {[llength $args] == 0} {
638	set args "-objects"
639	}
640
641	set op [lindex $args 0]
642	switch -- $op {
643	-objects {
644	# put the dataobj list in order according to -raise options
645	set dlist $_dlist
646	foreach dataobj $dlist {
647	if {[info exists _obj2ovride($dataobj-raise)] &&
648	$_obj2ovride($dataobj-raise)} {
649	set i [lsearch -exact $dlist $dataobj]
650	if {$i >= 0} {
651	set dlist [lreplace $dlist $i $i]
652	lappend dlist $dataobj
653	}
654	}
655	}
656	return $dlist
657	}
658	-image {
659	if {[llength $args] != 2} {
660	error "wrong # args: should be \"get -image 3dview\|legend\""
661	}
662	switch -- [lindex $args end] {
663	3dview {
664	return $_image(plot)
665	}
666	legend {
667	return $_image(legend)
668	}
669	default {
670	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
671	}
672	}
673	}
674	default {
675	error "bad option \"$op\": should be -objects or -image"
676	}
677	}
678	}
679
680	# ----------------------------------------------------------------------
681	# USAGE: delete ?<dataobj1> <dataobj2> ...?
682	#
683	# Clients use this to delete a dataobj from the plot. If no dataobjs
684	# are specified, then all dataobjs are deleted. No data objects are
685	# deleted. They are only removed from the display list.
686	#
687	# ----------------------------------------------------------------------
688	itcl::body Rappture::FlowvisViewer::delete {args} {
689	flow stop
690	if {[llength $args] == 0} {
691	set args $_dlist
692	}
693
694	# Delete all specified dataobjs
695	set changed 0
696	foreach dataobj $args {
697	set pos [lsearch -exact $_dlist $dataobj]
698	if { $pos >= 0 } {
699	set _dlist [lreplace $_dlist $pos $pos]
700	array unset _limits $dataobj-*
701	array unset _obj2ovride $dataobj-*
702	array unset _dataset2flow $dataobj-*
703	array unset _serverDatasets $dataobj-*
704	array unset _dataset2style $dataobj-*
705	set changed 1
706	}
707	}
708	# If anything changed, then rebuild the plot
709	if {$changed} {
710	# Repair the reverse lookup
711	foreach tf [array names _style2datasets] {
712	set list {}
713	foreach {dataobj cname} $_style2datasets($tf) break
714	if { [info exists _serverDatasets($dataobj-$cname)] } {
715	lappend list $dataobj $cname
716	}
717	if { $list == "" } {
718	array unset _style2datasets $tf
719	} else {
720	set _style2datasets($tf) $list
721	}
722	}
723	$_dispatcher event -idle !rebuild
724	}
725	}
726
727	# ----------------------------------------------------------------------
728	# USAGE: scale ?<data1> <data2> ...?
729	#
730	# Sets the default limits for the overall plot according to the
731	# limits of the data for all of the given <data> objects. This
732	# accounts for all objects--even those not showing on the screen.
733	# Because of this, the limits are appropriate for all objects as
734	# the user scans through data in the ResultSet viewer.
735	# ----------------------------------------------------------------------
736	itcl::body Rappture::FlowvisViewer::scale {args} {
737	array set style {
738	-color BCGYR
739	-levels 6
740	-markers ""
741	}
742	array unset _limits
743	array unset _volcomponents
744	foreach dataobj $args {
745	if { ![$dataobj isvalid] } {
746	continue; # Object doesn't contain valid data.
747	}
748	foreach cname [$dataobj components] {
749	if { ![info exists _volcomponents($cname)] } {
750	lappend _componentsList $cname
751	array set style [lindex [$dataobj components -style $cname] 0]
752	set cmap [ColorsToColormap $style(-color)]
753	set _settings($cname-colormap) $style(-color)
754	}
755	lappend _volcomponents($cname) $dataobj-$cname
756	array unset limits
757	array set limits [$dataobj valueLimits $cname]
758	set _limits($cname) $limits(v)
759	}
760	foreach axis {x y z v} {
761	foreach { min max } [$dataobj limits $axis] break
762	if {"" != $min && "" != $max} {
763	if { ![info exists _limits($axis)] } {
764	set _limits($axis) [list $min $max]
765	continue
766	}
767	foreach {amin amax} $_limits($axis) break
768	if {$min < $amin} {
769	set amin $min
770	}
771	if {$max > $amax} {
772	set amax $max
773	}
774	set _limits($axis) [list $amin $amax]
775	}
776	}
777	}
778	#BuildVolumeComponents
779	}
780
781	# ----------------------------------------------------------------------
782	# USAGE: download coming
783	# USAGE: download controls <downloadCommand>
784	# USAGE: download now
785	#
786	# Clients use this method to create a downloadable representation
787	# of the plot. Returns a list of the form {ext string}, where
788	# "ext" is the file extension (indicating the type of data) and
789	# "string" is the data itself.
790	# ----------------------------------------------------------------------
791	itcl::body Rappture::FlowvisViewer::download {option args} {
792	switch $option {
793	coming {
794	if {[catch {
795	blt::winop snap $itk_component(plotarea) $_image(download)
796	}]} {
797	$_image(download) configure -width 1 -height 1
798	$_image(download) put #000000
799	}
800	}
801	controls {
802	set popup .flowvisviewerdownload
803	if { ![winfo exists $popup] } {
804	set inner [BuildDownloadPopup $popup [lindex $args 0]]
805	} else {
806	set inner [$popup component inner]
807	}
808	# FIXME: we only support download of current active component
809	#set num [llength [get]]
810	#set num [expr {($num == 1) ? "1 result" : "$num results"}]
811	set num "current flow"
812	set word [Rappture::filexfer::label downloadWord]
813	$inner.summary configure -text "$word $num in the following format:"
814	update idletasks ;# Fix initial sizes
815	return $popup
816	}
817	now {
818	set popup .flowvisviewerdownload
819	if { [winfo exists $popup] } {
820	$popup deactivate
821	}
822	switch -- $_downloadPopup(format) {
823	"640x480" {
824	return [$this GetMovie [lindex $args 0] 640 480]
825	}
826	"1024x768" {
827	return [$this GetMovie [lindex $args 0] 1024 768]
828	}
829	"image" {
830	return [$this GetImage [lindex $args 0]]
831	}
832	"vtk" {
833	return [$this GetVtkData [lindex $args 0]]
834	}
835	default {
836	error "bad download format $_downloadPopup(format)"
837	}
838	}
839	}
840	default {
841	error "bad option \"$option\": should be coming, controls, now"
842	}
843	}
844	}
845
846	# ----------------------------------------------------------------------
847	# USAGE: Connect ?<host:port>,<host:port>...?
848	#
849	# Clients use this method to establish a connection to a new
850	# server, or to reestablish a connection to the previous server.
851	# Any existing connection is automatically closed.
852	# ----------------------------------------------------------------------
853	itcl::body Rappture::FlowvisViewer::Connect {} {
854	set _hosts [GetServerList "nanovis"]
855	if { "" == $_hosts } {
856	return 0
857	}
858	set _reset 1
859	set result [VisViewer::Connect $_hosts]
860	if { $result } {
861	if { $_reportClientInfo } {
862	# Tell the server the viewer, hub, user and session.
863	# Do this immediately on connect before buffering any commands
864	global env
865
866	set info {}
867	set user "???"
868	if { [info exists env(USER)] } {
869	set user $env(USER)
870	}
871	set session "???"
872	if { [info exists env(SESSION)] } {
873	set session $env(SESSION)
874	}
875	lappend info "version" "$Rappture::version"
876	lappend info "build" "$Rappture::build"
877	lappend info "svnurl" "$Rappture::svnurl"
878	lappend info "installdir" "$Rappture::installdir"
879	lappend info "hub" [exec hostname]
880	lappend info "client" "flowvisviewer"
881	lappend info "user" $user
882	lappend info "session" $session
883	SendCmd "clientinfo [list $info]"
884	}
885
886	set w [winfo width $itk_component(3dview)]
887	set h [winfo height $itk_component(3dview)]
888	EventuallyResize $w $h
889	}
890	return $result
891	}
892
893	#
894	# isconnected --
895	#
896	# Indicates if we are currently connected to the visualization server.
897	#
898	itcl::body Rappture::FlowvisViewer::isconnected {} {
899	return [VisViewer::IsConnected]
900	}
901
902	#
903	# disconnect --
904	#
905	itcl::body Rappture::FlowvisViewer::disconnect {} {
906	Disconnect
907	}
908
909	#
910	# Disconnect --
911	#
912	# Clients use this method to disconnect from the current rendering
913	# server.
914	#
915	itcl::body Rappture::FlowvisViewer::Disconnect {} {
916	VisViewer::Disconnect
917
918	# disconnected -- no more data sitting on server
919	array unset _serverDatasets
920	}
921
922	# ----------------------------------------------------------------------
923	# USAGE: SendTransferFunctions
924	# ----------------------------------------------------------------------
925	itcl::body Rappture::FlowvisViewer::SendTransferFunctions {} {
926	if { $_activeTf == "" } {
927	puts stderr "no active tf"
928	return
929	}
930	set tf $_activeTf
931	if { $_first == "" } {
932	puts stderr "first not set"
933	return
934	}
935
936	# Ensure that the global thickness setting (in the slider
937	# settings widget) is used for the active transfer-function. Update
938	# the value in the _settings variable.
939
940	# Scale values between 0.00001 and 0.01000
941	set thickness [expr {double($_settings(-thickness)) * 0.0001}]
942	set _settings($tf-thickness) $thickness
943
944	foreach tag [array names _dataset2style $_first-*] {
945	if { [info exists _dataset2style($tag)] } {
946	foreach tf $_dataset2style($tag) {
947	ComputeTransferFunction $tf
948	}
949	}
950	}
951	EventuallyRedrawLegend
952	}
953
954	# ----------------------------------------------------------------------
955	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
956	#
957	# Invoked automatically whenever the "image" command comes in from
958	# the rendering server. Indicates that binary image data with the
959	# specified <size> will follow.
960	# ----------------------------------------------------------------------
961	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
962	array set info {
963	-token "???"
964	-bytes 0
965	-type image
966	}
967	array set info $args
968	set bytes [ReceiveBytes $info(-bytes)]
969	ReceiveEcho <<line "<read $info(-bytes) bytes"
970	switch -- $info(-type) {
971	"image" {
972	$_image(plot) configure -data $bytes
973	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
974	}
975	"print" {
976	set tag $this-$info(-token)
977	set _hardcopy($tag) $bytes
978	}
979	"movie" {
980	set tag $this-$info(-token)
981	set _hardcopy($tag) $bytes
982	}
983	default {
984	puts stderr "unknown download type $info(-type)"
985	}
986	}
987	}
988
989	#
990	# DrawLegend --
991	#
992	itcl::body Rappture::FlowvisViewer::DrawLegend { tag } {
993	set c $itk_component(legend)
994	set w [winfo width $c]
995	set h [winfo height $c]
996	set lx 10
997	set ly [expr {$h - 1}]
998	if {"" == [$c find withtag colorbar]} {
999	$c create image 10 10 -anchor nw \
1000	-image $_image(legend) -tags colorbar
1001	$c create text $lx $ly -anchor sw \
1002	-fill $itk_option(-plotforeground) -tags "limits text vmin"
1003	$c create text [expr {$w-$lx}] $ly -anchor se \
1004	-fill $itk_option(-plotforeground) -tags "limits text vmax"
1005	$c create text [expr {$w/2}] $ly -anchor s \
1006	-fill $itk_option(-plotforeground) -tags "title text"
1007	$c lower colorbar
1008	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1009	}
1010
1011	# Display the markers used by the current transfer function.
1012	set tf $_dataset2style($tag)
1013	foreach {min max} [limits $tf] break
1014	$c itemconfigure vmin -text [format %g $min]
1015	$c coords vmin $lx $ly
1016
1017	$c itemconfigure vmax -text [format %g $max]
1018	$c coords vmax [expr {$w-$lx}] $ly
1019
1020	set title [$_first hints label]
1021	set units [$_first hints units]
1022	if { $units != "" } {
1023	set title "$title ($units)"
1024	}
1025	$c itemconfigure title -text $title
1026	$c coords title [expr {$w/2}] $ly
1027
1028	if { [info exists _isomarkers($tf)] } {
1029	foreach m $_isomarkers($tf) {
1030	$m visible yes
1031	}
1032	}
1033	}
1034
1035	#
1036	# ReceiveLegend --
1037	#
1038	# The procedure is the response from the render server to each "legend"
1039	# command. The server sends back a "legend" command invoked our
1040	# the slave interpreter. The purpose is to collect data of the image
1041	# representing the legend in the canvas. In addition, the
1042	# active transfer function is displayed.
1043	#
1044	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1045	if { ![isconnected] } {
1046	return
1047	}
1048	set bytes [ReceiveBytes $size]
1049	$_image(legend) configure -data $bytes
1050	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1051
1052	DrawLegend $tag
1053	}
1054
1055	#
1056	# ReceiveData --
1057	#
1058	# The procedure is the response from the render server to each "data
1059	# follows" command. The server sends back a "data" command invoked our
1060	# the slave interpreter. The purpose is to collect the min/max of the
1061	# volume sent to the render server. Since the client (flowvisviewer)
1062	# doesn't parse 3D data formats, we rely on the server (nanovis) to
1063	# tell us what the limits are. Once we've received the limits to all
1064	# the data we've sent (tracked by _recvdDatasets) we can then determine
1065	# what the transfer functions are for these volumes.
1066	#
1067	#
1068	# Note: There is a considerable tradeoff in having the server report
1069	# back what the data limits are. It means that much of the code
1070	# having to do with transfer-functions has to wait for the data
1071	# to come back, since the isomarkers are calculated based upon
1072	# the data limits. The client code is much messier because of
1073	# this. The alternative is to parse any of the 3D formats on the
1074	# client side.
1075	#
1076	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1077	if { ![isconnected] } {
1078	return
1079	}
1080
1081	# Arguments from server are name value pairs. Stuff them in an array.
1082	array set info $args
1083
1084	set tag $info(tag)
1085	set parts [split $tag -]
1086
1087	#
1088	# Volumes don't exist until we're told about them.
1089	#
1090	set dataobj [lindex $parts 0]
1091	set _serverDatasets($tag) 0
1092	set _limits($tag) [list $info(min) $info(max)]
1093
1094	unset _recvdDatasets($tag)
1095	if { [array size _recvdDatasets] == 0 } {
1096	updateTransferFunctions
1097	}
1098	}
1099
1100	# ----------------------------------------------------------------------
1101	# USAGE: Rebuild
1102	#
1103	# Called automatically whenever something changes that affects the
1104	# data in the widget. Clears any existing data and rebuilds the
1105	# widget to display new data.
1106	# ----------------------------------------------------------------------
1107	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1108	set w [winfo width $itk_component(3dview)]
1109	set h [winfo height $itk_component(3dview)]
1110	if { $w < 2 \|\| $h < 2 } {
1111	update
1112	$_dispatcher event -idle !rebuild
1113	return
1114	}
1115
1116	# Turn on buffering of commands to the server. We don't want to
1117	# be preempted by a server disconnect/reconnect (which automatically
1118	# generates a new call to Rebuild).
1119	StartBufferingCommands
1120
1121	# Hide all the isomarkers. Can't remove them. Have to remember the
1122	# settings since the user may have created/deleted/moved markers.
1123
1124	foreach tf [array names _isomarkers] {
1125	foreach m $_isomarkers($tf) {
1126	$m visible no
1127	}
1128	}
1129
1130	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1131	set _width $w
1132	set _height $h
1133	$_arcball resize $w $h
1134	DoResize
1135	}
1136
1137	set _first ""
1138	foreach dataobj [get] {
1139	foreach cname [$dataobj components] {
1140	set tag $dataobj-$cname
1141	if {[$dataobj type] == "dx"} {
1142	set data [$dataobj blob $cname]
1143	} else {
1144	set data [$dataobj vtkdata $cname]
1145	}
1146	set nbytes [string length $data]
1147	if { $_reportClientInfo } {
1148	set info {}
1149	lappend info "tool_id" [$dataobj hints toolid]
1150	lappend info "tool_name" [$dataobj hints toolname]
1151	lappend info "tool_title" [$dataobj hints tooltitle]
1152	lappend info "tool_command" [$dataobj hints toolcommand]
1153	lappend info "tool_revision" [$dataobj hints toolrevision]
1154	lappend info "dataset_label" [$dataobj hints label]
1155	lappend info "dataset_size" $nbytes
1156	lappend info "dataset_tag" $tag
1157	SendCmd "clientinfo [list $info]"
1158	}
1159	set numComponents [$dataobj numComponents $cname]
1160	# I have a field. Is a vector field or a volume field?
1161	if { $numComponents == 1 } {
1162	SendCmd "volume data follows $nbytes $tag"
1163	} else {
1164	if {[SendFlowCmd $dataobj $cname $nbytes $numComponents] < 0} {
1165	continue
1166	}
1167	}
1168	SendData $data
1169	NameTransferFunction $dataobj $cname
1170	set _recvdDatasets($tag) 1
1171	}
1172	}
1173
1174	set _first [lindex [get] 0]
1175
1176	# Turn off cutplanes for all volumes
1177	foreach axis {x y z} {
1178	SendCmd "cutplane state 0 $axis"
1179	}
1180
1181	# Reset the camera and other view parameters
1182	InitSettings -axesvisible -gridvisible \
1183	-opacity -light2side -isosurfaceshading \
1184	-ambient -diffuse -specularlevel -specularexponent \
1185	-volume -outlinevisible -cutplanesvisible \
1186	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
1187	-xcutplaneposition -ycutplaneposition -zcutplaneposition
1188
1189	# nothing to send -- activate the proper volume
1190	if {"" != $_first} {
1191	set axis [$_first hints updir]
1192	if {"" != $axis} {
1193	SendCmd "up $axis"
1194	}
1195	set location [$_first hints camera]
1196	if { $location != "" } {
1197	array set _view $location
1198	}
1199	}
1200	set _settings(-qw) $_view(-qw)
1201	set _settings(-qx) $_view(-qx)
1202	set _settings(-qy) $_view(-qy)
1203	set _settings(-qz) $_view(-qz)
1204	set _settings(-xpan) $_view(-xpan)
1205	set _settings(-ypan) $_view(-ypan)
1206	set _settings(-zoom) $_view(-zoom)
1207
1208	set q [ViewToQuaternion]
1209	$_arcball quaternion $q
1210	SendCmd "camera orient $q"
1211	SendCmd "camera reset"
1212	PanCamera
1213	SendCmd "camera zoom $_view(-zoom)"
1214
1215	foreach dataobj [get] {
1216	foreach cname [$dataobj components] {
1217	NameTransferFunction $dataobj $cname
1218	}
1219	}
1220
1221	# nothing to send -- activate the proper ivol
1222	set _first [lindex [get] 0]
1223	if {"" != $_first} {
1224	set axis [$_first hints updir]
1225	if {"" != $axis} {
1226	SendCmd "up $axis"
1227	}
1228	set location [$_first hints camera]
1229	if { $location != "" } {
1230	array set _view $location
1231	}
1232	set cname [lindex [$_first components] 0]
1233	set _activeTf [lindex $_dataset2style($_first-$cname) 0]
1234	}
1235
1236	# sync the state of slicers
1237	set vols [CurrentDatasets -cutplanes]
1238	foreach axis {x y z} {
1239	set pos [expr {0.01*$_settings(-${axis}cutplaneposition)}]
1240	SendCmd "cutplane position $pos $axis $vols"
1241	}
1242	SendCmd "volume data state $_settings(-volume)"
1243	EventuallyRedrawLegend
1244
1245	# Actually write the commands to the server socket. If it fails, we don't
1246	# care. We're finished here.
1247	blt::busy hold $itk_component(hull)
1248	StopBufferingCommands
1249	blt::busy release $itk_component(hull)
1250	set _reset 0
1251	}
1252
1253	# ----------------------------------------------------------------------
1254	# USAGE: CurrentDatasets ?-cutplanes?
1255	#
1256	# Returns a list of volume server IDs for the current volume being
1257	# displayed. This is normally a single ID, but it might be a list
1258	# of IDs if the current data object has multiple components.
1259	# ----------------------------------------------------------------------
1260	itcl::body Rappture::FlowvisViewer::CurrentDatasets {{what -all}} {
1261	return ""
1262	if { $_first == "" } {
1263	return
1264	}
1265	foreach tag [array names _serverDatasets -] {
1266	if {[string match $_first-* $tag]} {
1267	array set style {
1268	-cutplanes 1
1269	}
1270	foreach {dataobj cname} [split $tag -] break
1271	array set style [lindex [$dataobj components -style $cname] 0]
1272	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1273	lappend rlist $_serverDatasets($tag)
1274	}
1275	}
1276	}
1277	return $rlist
1278	}
1279
1280	# ----------------------------------------------------------------------
1281	# USAGE: Zoom in
1282	# USAGE: Zoom out
1283	# USAGE: Zoom reset
1284	#
1285	# Called automatically when the user clicks on one of the zoom
1286	# controls for this widget. Changes the zoom for the current view.
1287	# ----------------------------------------------------------------------
1288	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1289	switch -- $option {
1290	"in" {
1291	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1292	set _settings(-zoom) $_view(-zoom)
1293	SendCmd "camera zoom $_view(-zoom)"
1294	}
1295	"out" {
1296	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1297	set _settings(-zoom) $_view(-zoom)
1298	SendCmd "camera zoom $_view(-zoom)"
1299	}
1300	"reset" {
1301	array set _view {
1302	-qw 0.853553
1303	-qx -0.353553
1304	-qy 0.353553
1305	-qz 0.146447
1306	-xpan 0
1307	-ypan 0
1308	-zoom 1.0
1309	}
1310	if { $_first != "" } {
1311	set location [$_first hints camera]
1312	if { $location != "" } {
1313	array set _view $location
1314	}
1315	}
1316	set q [ViewToQuaternion]
1317	$_arcball quaternion $q
1318	SendCmd "camera orient $q"
1319	SendCmd "camera reset"
1320	set _settings(-qw) $_view(-qw)
1321	set _settings(-qx) $_view(-qx)
1322	set _settings(-qy) $_view(-qy)
1323	set _settings(-qz) $_view(-qz)
1324	set _settings(-xpan) $_view(-xpan)
1325	set _settings(-ypan) $_view(-ypan)
1326	set _settings(-zoom) $_view(-zoom)
1327	}
1328	}
1329	}
1330
1331	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1332	set x $_view(-xpan)
1333	set y $_view(-ypan)
1334	SendCmd "camera pan $x $y"
1335	}
1336
1337	# ----------------------------------------------------------------------
1338	# USAGE: Rotate click <x> <y>
1339	# USAGE: Rotate drag <x> <y>
1340	# USAGE: Rotate release <x> <y>
1341	#
1342	# Called automatically when the user clicks/drags/releases in the
1343	# plot area. Moves the plot according to the user's actions.
1344	# ----------------------------------------------------------------------
1345	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1346	switch -- $option {
1347	click {
1348	$itk_component(3dview) configure -cursor fleur
1349	set _click(x) $x
1350	set _click(y) $y
1351	}
1352	drag {
1353	if {[array size _click] == 0} {
1354	Rotate click $x $y
1355	} else {
1356	set w [winfo width $itk_component(3dview)]
1357	set h [winfo height $itk_component(3dview)]
1358	if {$w <= 0 \|\| $h <= 0} {
1359	return
1360	}
1361
1362	if {[catch {
1363	# this fails sometimes for no apparent reason
1364	set dx [expr {double($x-$_click(x))/$w}]
1365	set dy [expr {double($y-$_click(y))/$h}]
1366	}]} {
1367	return
1368	}
1369
1370	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1371	QuaternionToView $q
1372	set _settings(-qw) $_view(-qw)
1373	set _settings(-qx) $_view(-qx)
1374	set _settings(-qy) $_view(-qy)
1375	set _settings(-qz) $_view(-qz)
1376	SendCmd "camera orient $q"
1377
1378	set _click(x) $x
1379	set _click(y) $y
1380	}
1381	}
1382	release {
1383	Rotate drag $x $y
1384	$itk_component(3dview) configure -cursor ""
1385	catch {unset _click}
1386	}
1387	default {
1388	error "bad option \"$option\": should be click, drag, release"
1389	}
1390	}
1391	}
1392
1393	# ----------------------------------------------------------------------
1394	# USAGE: $this Pan click x y
1395	# $this Pan drag x y
1396	# $this Pan release x y
1397	#
1398	# Called automatically when the user clicks on one of the zoom
1399	# controls for this widget. Changes the zoom for the current view.
1400	# ----------------------------------------------------------------------
1401	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1402	# Experimental stuff
1403	set w [winfo width $itk_component(3dview)]
1404	set h [winfo height $itk_component(3dview)]
1405	if { $option == "set" } {
1406	set x [expr $x / double($w)]
1407	set y [expr $y / double($h)]
1408	set _view(-xpan) [expr $_view(-xpan) + $x]
1409	set _view(-ypan) [expr $_view(-ypan) + $y]
1410	PanCamera
1411	set _settings(-xpan) $_view(-xpan)
1412	set _settings(-ypan) $_view(-ypan)
1413	return
1414	}
1415	if { $option == "click" } {
1416	set _click(x) $x
1417	set _click(y) $y
1418	$itk_component(3dview) configure -cursor hand1
1419	}
1420	if { $option == "drag" \|\| $option == "release" } {
1421	set dx [expr ($_click(x) - $x)/double($w)]
1422	set dy [expr ($_click(y) - $y)/double($h)]
1423	set _click(x) $x
1424	set _click(y) $y
1425	set _view(-xpan) [expr $_view(-xpan) - $dx]
1426	set _view(-ypan) [expr $_view(-ypan) - $dy]
1427	PanCamera
1428	set _settings(-xpan) $_view(-xpan)
1429	set _settings(-ypan) $_view(-ypan)
1430	}
1431	if { $option == "release" } {
1432	$itk_component(3dview) configure -cursor ""
1433	}
1434	}
1435
1436	# ----------------------------------------------------------------------
1437	# USAGE: InitSettings <what> ?<value>?
1438	#
1439	# Used internally to update rendering settings whenever parameters
1440	# change in the popup settings panel. Sends the new settings off
1441	# to the back end.
1442	# ----------------------------------------------------------------------
1443	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1444	foreach arg $args {
1445	AdjustSetting $arg
1446	}
1447	}
1448
1449	# ----------------------------------------------------------------------
1450	# USAGE: AdjustSetting <what> ?<value>?
1451	#
1452	# Used internally to update rendering settings whenever parameters
1453	# change in the popup settings panel. Sends the new settings off
1454	# to the back end.
1455	# ----------------------------------------------------------------------
1456	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1457	if {![isconnected]} {
1458	return
1459	}
1460	switch -- $what {
1461	"-ambient" {
1462	if { $_first != "" } {
1463	set comp [lindex [$_first components] 0]
1464	set tag $_first-$comp
1465	set val $_settings($what)
1466	set val [expr {0.01*$val}]
1467	SendCmd "$tag configure -ambient $val"
1468	}
1469	}
1470	"-axesvisible" {
1471	SendCmd "axis visible $_settings($what)"
1472	}
1473	"-background" {
1474	set bgcolor [$itk_component(background) value]
1475	array set fgcolors {
1476	"black" "white"
1477	"white" "black"
1478	"grey" "black"
1479	}
1480	configure -plotbackground $bgcolor \
1481	-plotforeground $fgcolors($bgcolor)
1482	if { $_first != "" } {
1483	set comp [lindex [$_first components] 0]
1484	set tag $_first-$comp
1485	DrawLegend $tag
1486	}
1487	}
1488	"-colormap" {
1489	set color [$itk_component(colormap) value]
1490	set _settings($what) $color
1491	#ResetColormap $color
1492	}
1493	"-cutplanesvisible" {
1494	set bool $_settings($what)
1495	set datasets [CurrentDatasets -cutplanes]
1496	set tag [lindex $datasets 0]
1497	SendCmd "cutplane visible $bool $tag"
1498	}
1499	"-diffuse" {
1500	if { $_first != "" } {
1501	set comp [lindex [$_first components] 0]
1502	set tag $_first-$comp
1503	set val $_settings($what)
1504	set val [expr {0.01*$val}]
1505	SendCmd "$tag configure -diffuse $val"
1506	}
1507	}
1508	"-gridvisible" {
1509	SendCmd "grid visible $_settings($what)"
1510	}
1511	"-isosurfaceshading" {
1512	if { $_first != "" } {
1513	set comp [lindex [$_first components] 0]
1514	set tag $_first-$comp
1515	set val $_settings($what)
1516	# This flag isn't implemented in the server
1517	#SendCmd "$tag configure -isosurface $val"
1518	}
1519	}
1520	"-legendvisible" {
1521	if { $_settings($what) } {
1522	blt::table $itk_component(plotarea) \
1523	0,0 $itk_component(3dview) -fill both \
1524	1,0 $itk_component(legend) -fill x
1525	blt::table configure $itk_component(plotarea) r1 -resize none
1526	} else {
1527	blt::table forget $itk_component(legend)
1528	}
1529	}
1530	"-light2side" {
1531	if { $_first != "" } {
1532	set comp [lindex [$_first components] 0]
1533	set tag $_first-$comp
1534	set val $_settings($what)
1535	SendCmd "$tag configure -light2side $val"
1536	}
1537	}
1538	"-opacity" {
1539	if { $_first != "" } {
1540	set comp [lindex [$_first components] 0]
1541	set tag $_first-$comp
1542	set opacity [expr { 0.01 * double($_settings($what)) }]
1543	SendCmd "$tag configure -opacity $opacity"
1544	}
1545	}
1546	"-outlinevisible" {
1547	if { $_first != "" } {
1548	set comp [lindex [$_first components] 0]
1549	set tag $_first-$comp
1550	SendCmd "$tag configure -outline $_settings($what)"
1551	}
1552	}
1553	"-specularlevel" {
1554	if { $_first != "" } {
1555	set comp [lindex [$_first components] 0]
1556	set tag $_first-$comp
1557	set val $_settings($what)
1558	set val [expr {0.01*$val}]
1559	SendCmd "$tag configure -specularLevel $val"
1560	}
1561	}
1562	"-specularexponent" {
1563	if { $_first != "" } {
1564	set comp [lindex [$_first components] 0]
1565	set tag $_first-$comp
1566	set val $_settings($what)
1567	SendCmd "$tag configure -specularExp $val"
1568	}
1569	}
1570	"-thickness" {
1571	if { $_first != "" && $_activeTf != "" } {
1572	set val $_settings($what)
1573	# Scale values between 0.00001 and 0.01000
1574	set sval [expr {0.0001*double($val)}]
1575	set tf $_activeTf
1576	set _settings($tf${what}) $sval
1577	updateTransferFunctions
1578	}
1579	}
1580	"-volume" {
1581	if { $_first != "" } {
1582	set comp [lindex [$_first components] 0]
1583	set tag $_first-$comp
1584	SendCmd "$tag configure -volume $_settings($what)"
1585	}
1586	}
1587	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1588	set axis [string range $what 1 1]
1589	set pos [expr $_settings($what) * 0.01]
1590	# We only set cutplanes on the first dataset.
1591	set datasets [CurrentDatasets -cutplanes]
1592	set tag [lindex $datasets 0]
1593	SendCmd "cutplane position $pos $axis $tag"
1594	}
1595	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1596	set axis [string range $what 1 1]
1597	set bool $_settings($what)
1598	# We only set cutplanes on the first dataset.
1599	set datasets [CurrentDatasets -cutplanes]
1600	set tag [lindex $datasets 0]
1601	SendCmd "cutplane state $bool $axis $tag"
1602	if { $bool } {
1603	$itk_component(${axis}CutScale) configure -state normal \
1604	-troughcolor white
1605	} else {
1606	$itk_component(${axis}CutScale) configure -state disabled \
1607	-troughcolor grey82
1608	}
1609	}
1610	default {
1611	error "don't know how to fix $what"
1612	}
1613	}
1614	}
1615
1616	# ----------------------------------------------------------------------
1617	# USAGE: FixLegend
1618	#
1619	# Used internally to update the legend area whenever it changes size
1620	# or when the field changes. Asks the server to send a new legend
1621	# for the current field.
1622	# ----------------------------------------------------------------------
1623	itcl::body Rappture::FlowvisViewer::FixLegend {} {
1624	set _resizeLegendPending 0
1625	set lineht [font metrics $itk_option(-font) -linespace]
1626	set w [expr {$_width-20}]
1627	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1628
1629	if { $_first == "" } {
1630	return
1631	}
1632	set comp [lindex [$_first components] 0]
1633	set tag $_first-$comp
1634	#set _activeTf [lindex $_dataset2style($tag) 0]
1635	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1636	#SendCmd "legend $_activeTf $w $h"
1637	SendCmd "$tag legend $w $h"
1638	}
1639	}
1640
1641	#
1642	# NameTransferFunction --
1643	#
1644	# Creates a transfer function name based on the <style> settings in the
1645	# library run.xml file. This placeholder will be used later to create
1646	# and send the actual transfer function once the data info has been sent
1647	# to us by the render server. [We won't know the volume limits until the
1648	# server parses the 3D data and sends back the limits via ReceiveData.]
1649	#
1650	itcl::body Rappture::FlowvisViewer::NameTransferFunction { dataobj cname } {
1651	array set style {
1652	-color BCGYR
1653	-levels 6
1654	-opacity 0.5
1655	}
1656	array set style [lindex [$dataobj components -style $cname] 0]
1657	# Some tools erroneously set -opacity to 1 in style, so
1658	# override the requested opacity for now
1659	set style(-opacity) 0.5
1660	set _settings(-opacity) [expr $style(-opacity) * 100]
1661	set _dataset2style($dataobj-$cname) $cname
1662	lappend _style2datasets($cname) $dataobj $cname
1663	return $cname
1664	}
1665
1666	#
1667	# ComputeTransferFunction --
1668	#
1669	# Computes and sends the transfer function to the render server. It's
1670	# assumed that the volume data limits are known and that the global
1671	# transfer-functions slider values have been set up. Both parts are
1672	# needed to compute the relative value (location) of the marker, and
1673	# the alpha map of the transfer function.
1674	#
1675	itcl::body Rappture::FlowvisViewer::ComputeTransferFunction { tf } {
1676	array set style {
1677	-color BCGYR
1678	-levels 6
1679	-opacity 0.5
1680	}
1681	set dataobj ""; set cname ""
1682	foreach {dataobj cname} $_style2datasets($tf) break
1683	if { $dataobj == "" } {
1684	return 0
1685	}
1686	array set style [lindex [$dataobj components -style $cname] 0]
1687	# Some tools erroneously set -opacity to 1 in style, so
1688	# override the requested opacity for now
1689	set style(-opacity) 0.5
1690
1691	# We have to parse the style attributes for a volume using this
1692	# transfer-function once. This sets up the initial isomarkers for the
1693	# transfer function. The user may add/delete markers, so we have to
1694	# maintain a list of markers for each transfer-function. We use the one
1695	# of the volumes (the first in the list) using the transfer-function as a
1696	# reference.
1697
1698	if { ![info exists _isomarkers($tf)] } {
1699	# Have to defer creation of isomarkers until we have data limits
1700	if { [info exists style(-markers)] &&
1701	[llength $style(-markers)] > 0 } {
1702	ParseMarkersOption $tf $style(-markers)
1703	} else {
1704	ParseLevelsOption $tf $style(-levels)
1705	}
1706	}
1707	if { [info exists style(-nonuniformcolors)] } {
1708	foreach { value color } $style(-nonuniformcolors) {
1709	append cmap "$value [Color2RGB $color] "
1710	}
1711	} else {
1712	set cmap [ColorsToColormap $style(-color)]
1713	}
1714
1715	if { ![info exists _settings(-opacity)] } {
1716	set _settings(-opacity) [expr $style(-opacity) * 100]
1717	}
1718
1719	# Transfer function should be normalized with [0,1] range
1720	# The volume shading opacity setting is used to scale opacity
1721	# in the volume shader.
1722	set max 1.0
1723
1724	set isovalues {}
1725	foreach m $_isomarkers($tf) {
1726	lappend isovalues [$m relval]
1727	}
1728	# Sort the isovalues
1729	set isovalues [lsort -real $isovalues]
1730
1731	set tag $tf
1732	if { ![info exists _settings($tag-thickness)]} {
1733	set _settings($tag-thickness) 0.005
1734	}
1735	set delta $_settings($tag-thickness)
1736
1737	set first [lindex $isovalues 0]
1738	set last [lindex $isovalues end]
1739	set amap ""
1740	if { $first == "" \|\| $first != 0.0 } {
1741	lappend amap 0.0 0.0
1742	}
1743	foreach x $isovalues {
1744	set x1 [expr {$x-$delta-0.00001}]
1745	set x2 [expr {$x-$delta}]
1746	set x3 [expr {$x+$delta}]
1747	set x4 [expr {$x+$delta+0.00001}]
1748	if { $x1 < 0.0 } {
1749	set x1 0.0
1750	} elseif { $x1 > 1.0 } {
1751	set x1 1.0
1752	}
1753	if { $x2 < 0.0 } {
1754	set x2 0.0
1755	} elseif { $x2 > 1.0 } {
1756	set x2 1.0
1757	}
1758	if { $x3 < 0.0 } {
1759	set x3 0.0
1760	} elseif { $x3 > 1.0 } {
1761	set x3 1.0
1762	}
1763	if { $x4 < 0.0 } {
1764	set x4 0.0
1765	} elseif { $x4 > 1.0 } {
1766	set x4 1.0
1767	}
1768	# add spikes in the middle
1769	lappend amap $x1 0.0
1770	lappend amap $x2 $max
1771	lappend amap $x3 $max
1772	lappend amap $x4 0.0
1773	}
1774	if { $last == "" \|\| $last != 1.0 } {
1775	lappend amap 1.0 0.0
1776	}
1777	SendCmd "transfunc define $tf { $cmap } { $amap }"
1778	return [SendCmd "$dataobj-$cname configure -transferfunction $tf"]
1779	}
1780
1781	# ----------------------------------------------------------------------
1782	# CONFIGURATION OPTION: -plotbackground
1783	# ----------------------------------------------------------------------
1784	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1785	if { [isconnected] } {
1786	set color $itk_option(-plotbackground)
1787	set rgb [Color2RGB $color]
1788	SendCmd "screen bgcolor $rgb"
1789	$itk_component(legend) configure -background $color
1790	}
1791	}
1792
1793	# ----------------------------------------------------------------------
1794	# CONFIGURATION OPTION: -plotforeground
1795	# ----------------------------------------------------------------------
1796	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1797	if { [isconnected] } {
1798	set color $itk_option(-plotforeground)
1799	set rgb [Color2RGB $color]
1800	SendCmd "volume outline color $rgb"
1801	SendCmd "grid axiscolor $rgb"
1802	SendCmd "grid linecolor $rgb"
1803	$itk_component(legend) itemconfigure text -fill $color
1804	}
1805	}
1806
1807	# ----------------------------------------------------------------------
1808	# CONFIGURATION OPTION: -plotoutline
1809	# ----------------------------------------------------------------------
1810	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1811	# Must check if we are connected because this routine is called from the
1812	# class body when the -plotoutline itk_option is defined. At that point
1813	# the FlowvisViewer class constructor hasn't been called, so we can't
1814	# start sending commands to visualization server.
1815	if { [isconnected] } {
1816	if {"" == $itk_option(-plotoutline)} {
1817	SendCmd "volume outline state off"
1818	} else {
1819	SendCmd "volume outline state on"
1820	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1821	}
1822	}
1823	}
1824
1825	#
1826	# The -levels option takes a single value that represents the number
1827	# of evenly distributed markers based on the current data range. Each
1828	# marker is a relative value from 0.0 to 1.0.
1829	#
1830	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1831	set c $itk_component(legend)
1832	regsub -all "," $levels " " levels
1833	if {[string is int $levels]} {
1834	for {set i 1} { $i <= $levels } {incr i} {
1835	set x [expr {double($i)/($levels+1)}]
1836	set m [Rappture::IsoMarker \#auto $c $this $tf]
1837	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1838	$m relval $x
1839	lappend _isomarkers($tf) $m
1840	}
1841	} else {
1842	foreach x $levels {
1843	set m [Rappture::IsoMarker \#auto $c $this $tf]
1844	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1845	$m relval $x
1846	lappend _isomarkers($tf) $m
1847	}
1848	}
1849	}
1850
1851	#
1852	# The -markers option takes a list of zero or more values (the values
1853	# may be separated either by spaces or commas) that have the following
1854	# format:
1855	#
1856	# N% Percent of current total data range. Converted to
1857	# to a relative value between 0.0 and 1.0.
1858	# N Absolute value of marker. If the marker is outside of
1859	# the current range, it will be displayed on the outer
1860	# edge of the legends, but it range it represents will
1861	# not be seen.
1862	#
1863	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1864	set c $itk_component(legend)
1865	regsub -all "," $markers " " markers
1866	foreach marker $markers {
1867	set n [scan $marker "%g%s" value suffix]
1868	if { $n == 2 && $suffix == "%" } {
1869	# ${n}% : Set relative value.
1870	set value [expr {$value * 0.01}]
1871	set m [Rappture::IsoMarker \#auto $c $this $tf]
1872	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1873	$m relval $value
1874	lappend _isomarkers($tf) $m
1875	} else {
1876	# ${n} : Set absolute value.
1877	set m [Rappture::IsoMarker \#auto $c $this $tf]
1878	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1879	$m absval $value
1880	lappend _isomarkers($tf) $m
1881	}
1882	}
1883	}
1884
1885	itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
1886	$_dispatcher event -after 100 !send_transfunc
1887	}
1888
1889	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
1890	if { $_activeTf == "" } {
1891	error "active transfer function isn't set"
1892	}
1893	set tf $_activeTf
1894	set c $itk_component(legend)
1895	set m [Rappture::IsoMarker \#auto $c $this $tf]
1896	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1897	set w [winfo width $c]
1898	$m relval [expr {double($x-10)/($w-20)}]
1899	lappend _isomarkers($tf) $m
1900	updateTransferFunctions
1901	return 1
1902	}
1903
1904	itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
1905	set tf [$marker transferfunc]
1906	set bool 0
1907	if { [info exists _isomarkers($tf)] } {
1908	set list {}
1909	set marker [namespace tail $marker]
1910	foreach m $_isomarkers($tf) {
1911	set sx [$m screenpos]
1912	if { $m != $marker } {
1913	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1914	$marker relval [$m relval]
1915	itcl::delete object $m
1916	bell
1917	set bool 1
1918	continue
1919	}
1920	}
1921	lappend list $m
1922	}
1923	set _isomarkers($tf) $list
1924	updateTransferFunctions
1925	}
1926	return $bool
1927	}
1928
1929	itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
1930	set tf [$marker transferfunc]
1931	if { [info exists _isomarkers($tf)] } {
1932	set marker [namespace tail $marker]
1933	foreach m $_isomarkers($tf) {
1934	set sx [$m screenpos]
1935	if { $m != $marker } {
1936	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1937	$m activate $bool
1938	}
1939	}
1940	}
1941	return ""
1942	}
1943
1944	itcl::body Rappture::FlowvisViewer::limits { cname } {
1945	set _limits(v) [list 0.0 1.0]
1946	if { ![info exists _style2datasets($cname)] } {
1947	puts stderr "no _style2datasets for cname=($cname)"
1948	return [array get _limits]
1949	}
1950	set min ""; set max ""
1951	foreach tag [GetDatasetsWithComponent $cname] {
1952	if { ![info exists _serverDatasets($tag)] } {
1953	puts stderr "$tag not in _serverDatasets?"
1954	continue
1955	}
1956	if { ![info exists _limits($tag)] } {
1957	puts stderr "$tag no min?"
1958	continue
1959	}
1960	foreach {vmin vmax} $_limits($tag) break
1961	if { $min == "" \|\| $min > $vmin } {
1962	set min $vmin
1963	}
1964	if { $max == "" \|\| $max < $vmax } {
1965	set max $vmax
1966	}
1967	}
1968	if { $min != "" && $max != "" } {
1969	set _limits(v) [list $min $max]
1970	set _limits($cname) [list $min $max]
1971	}
1972	return $_limits($cname)
1973	}
1974
1975	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
1976	set fg [option get $itk_component(hull) font Font]
1977	#set bfg [option get $itk_component(hull) boldFont Font]
1978
1979	set inner [$itk_component(main) insert end \
1980	-title "View Settings" \
1981	-icon [Rappture::icon wrench]]
1982	$inner configure -borderwidth 4
1983
1984	# General options
1985	checkbutton $inner.axes \
1986	-text "Axes" \
1987	-variable [itcl::scope _settings(-axesvisible)] \
1988	-command [itcl::code $this AdjustSetting -axesvisible] \
1989	-font "Arial 9"
1990
1991	checkbutton $inner.grid \
1992	-text "Grid" \
1993	-variable [itcl::scope _settings(-gridvisible)] \
1994	-command [itcl::code $this AdjustSetting -gridvisible] \
1995	-font "Arial 9"
1996
1997	checkbutton $inner.legend \
1998	-text "Legend" \
1999	-variable [itcl::scope _settings(-legendvisible)] \
2000	-command [itcl::code $this AdjustSetting -legendvisible] \
2001	-font "Arial 9"
2002
2003	label $inner.background_l -text "Background" -font "Arial 9"
2004	itk_component add background {
2005	Rappture::Combobox $inner.background -width 10 -editable no
2006	}
2007	$inner.background choices insert end \
2008	"black" "black" \
2009	"white" "white" \
2010	"grey" "grey"
2011
2012	$itk_component(background) value $_settings(-background)
2013	bind $inner.background <<Value>> \
2014	[itcl::code $this AdjustSetting -background]
2015
2016	# Dataset options
2017	label $inner.flow_l -text "Flow" -font "Arial 9 bold"
2018
2019	checkbutton $inner.outline \
2020	-text "Outline" \
2021	-variable [itcl::scope _settings(-outlinevisible)] \
2022	-command [itcl::code $this AdjustSetting -outlinevisible] \
2023	-font "Arial 9"
2024
2025	checkbutton $inner.volume \
2026	-text "Volume" \
2027	-variable [itcl::scope _settings(-volume)] \
2028	-command [itcl::code $this AdjustSetting -volume] \
2029	-font "Arial 9"
2030
2031	frame $inner.frame
2032
2033	blt::table $inner \
2034	0,0 $inner.axes -cspan 2 -anchor w \
2035	1,0 $inner.grid -cspan 2 -anchor w \
2036	2,0 $inner.legend -cspan 2 -anchor w \
2037	3,0 $inner.background_l -anchor e -pady 2 \
2038	3,1 $inner.background -fill x \
2039	4,0 $inner.flow_l -anchor w \
2040	5,0 $inner.outline -cspan 2 -anchor w \
2041	6,0 $inner.volume -cspan 2 -anchor w \
2042
2043	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2044
2045	blt::table configure $inner c* r* -resize none
2046	blt::table configure $inner c2 r7 -resize expand
2047	}
2048
2049	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2050	set inner [$itk_component(main) insert end \
2051	-title "Volume Settings" \
2052	-icon [Rappture::icon volume-on]]
2053	$inner configure -borderwidth 4
2054
2055	set fg [option get $itk_component(hull) font Font]
2056	#set bfg [option get $itk_component(hull) boldFont Font]
2057
2058	checkbutton $inner.vol -text "Show volume" -font $fg \
2059	-text "Volume" \
2060	-variable [itcl::scope _settings(-volume)] \
2061	-command [itcl::code $this AdjustSetting -volume] \
2062	-font "Arial 9"
2063
2064	label $inner.lighting_l \
2065	-text "Lighting / Material Properties" \
2066	-font "Arial 9 bold"
2067
2068	checkbutton $inner.isosurface -text "Isosurface shading" -font $fg \
2069	-variable [itcl::scope _settings(-isosurfaceshading)] \
2070	-command [itcl::code $this AdjustSetting -isosurfaceshading]
2071
2072	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2073	-variable [itcl::scope _settings(-light2side)] \
2074	-command [itcl::code $this AdjustSetting -light2side]
2075
2076	label $inner.ambient_l -text "Ambient" -font $fg
2077	::scale $inner.ambient -from 0 -to 100 -orient horizontal \
2078	-variable [itcl::scope _settings(-ambient)] \
2079	-width 10 \
2080	-showvalue off -command [itcl::code $this AdjustSetting -ambient]
2081
2082	label $inner.diffuse_l -text "Diffuse" -font $fg
2083	::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
2084	-variable [itcl::scope _settings(-diffuse)] \
2085	-width 10 \
2086	-showvalue off -command [itcl::code $this AdjustSetting -diffuse]
2087
2088	label $inner.specularLevel_l -text "Specular" -font $fg
2089	::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
2090	-variable [itcl::scope _settings(-specularlevel)] \
2091	-width 10 \
2092	-showvalue off -command [itcl::code $this AdjustSetting -specularlevel]
2093
2094	label $inner.specularExponent_l -text "Shininess" -font $fg
2095	::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
2096	-variable [itcl::scope _settings(-specularexponent)] \
2097	-width 10 \
2098	-showvalue off -command [itcl::code $this AdjustSetting -specularexponent]
2099
2100	# Opacity
2101	label $inner.opacity_l -text "Opacity" -font $fg
2102	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2103	-variable [itcl::scope _settings(-opacity)] \
2104	-width 10 \
2105	-showvalue off -command [itcl::code $this AdjustSetting -opacity]
2106
2107	label $inner.transferfunction_l \
2108	-text "Transfer Function" -font "Arial 9 bold"
2109
2110	# Tooth thickness
2111	label $inner.thin -text "Thin" -font $fg
2112	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2113	-variable [itcl::scope _settings(-thickness)] \
2114	-width 10 \
2115	-showvalue off -command [itcl::code $this AdjustSetting -thickness]
2116	label $inner.thick -text "Thick" -font $fg
2117
2118	# Colormap
2119	label $inner.colormap_l -text "Colormap" -font $fg
2120	itk_component add colormap {
2121	Rappture::Combobox $inner.colormap -width 10 -editable no
2122	}
2123	$inner.colormap choices insert end [GetColormapList -includeNone]
2124	bind $inner.colormap <<Value>> \
2125	[itcl::code $this AdjustSetting -colormap]
2126	$itk_component(colormap) value "BCGYR"
2127	set _settings(-colormap) "BCGYR"
2128
2129	blt::table $inner \
2130	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2131	1,0 $inner.lighting_l -cspan 4 -anchor w -pady {10 2} \
2132	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2133	3,0 $inner.ambient_l -anchor e -pady 2 \
2134	3,1 $inner.ambient -cspan 3 -pady 2 -fill x \
2135	4,0 $inner.diffuse_l -anchor e -pady 2 \
2136	4,1 $inner.diffuse -cspan 3 -pady 2 -fill x \
2137	5,0 $inner.specularLevel_l -anchor e -pady 2 \
2138	5,1 $inner.specularLevel -cspan 3 -pady 2 -fill x \
2139	6,0 $inner.specularExponent_l -anchor e -pady 2 \
2140	6,1 $inner.specularExponent -cspan 3 -pady 2 -fill x \
2141	7,0 $inner.opacity_l -anchor e -pady 2 \
2142	7,1 $inner.opacity -cspan 3 -pady 2 -fill x \
2143	8,0 $inner.thin -anchor e -pady 2 \
2144	8,1 $inner.thickness -cspan 2 -pady 2 -fill x \
2145	8,3 $inner.thick -anchor w -pady 2
2146
2147	blt::table configure $inner c0 c1 c3 r* -resize none
2148	blt::table configure $inner r9 -resize expand
2149	}
2150
2151	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2152	set inner [$itk_component(main) insert end \
2153	-title "Cutplane Settings" \
2154	-icon [Rappture::icon cutbutton]]
2155	$inner configure -borderwidth 4
2156
2157	checkbutton $inner.visible \
2158	-text "Show Cutplanes" \
2159	-variable [itcl::scope _settings(-cutplanesvisible)] \
2160	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
2161	-font "Arial 9"
2162
2163	# X-value slicer...
2164	itk_component add xCutButton {
2165	Rappture::PushButton $inner.xbutton \
2166	-onimage [Rappture::icon x-cutplane] \
2167	-offimage [Rappture::icon x-cutplane] \
2168	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
2169	-variable [itcl::scope _settings(-xcutplanevisible)]
2170	}
2171	Rappture::Tooltip::for $itk_component(xCutButton) \
2172	"Toggle the X cut plane on/off"
2173	$itk_component(xCutButton) select
2174
2175	itk_component add xCutScale {
2176	::scale $inner.xval -from 100 -to 0 \
2177	-width 10 -orient vertical -showvalue off \
2178	-borderwidth 1 -highlightthickness 0 \
2179	-command [itcl::code $this Slice move x] \
2180	-variable [itcl::scope _settings(-xcutplaneposition)]
2181	} {
2182	usual
2183	ignore -borderwidth -highlightthickness
2184	}
2185	# Set the default cutplane value before disabling the scale.
2186	$itk_component(xCutScale) set 50
2187	$itk_component(xCutScale) configure -state disabled
2188	Rappture::Tooltip::for $itk_component(xCutScale) \
2189	"@[itcl::code $this SlicerTip x]"
2190
2191	# Y-value slicer...
2192	itk_component add yCutButton {
2193	Rappture::PushButton $inner.ybutton \
2194	-onimage [Rappture::icon y-cutplane] \
2195	-offimage [Rappture::icon y-cutplane] \
2196	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
2197	-variable [itcl::scope _settings(-ycutplanevisible)]
2198	}
2199	Rappture::Tooltip::for $itk_component(yCutButton) \
2200	"Toggle the Y cut plane on/off"
2201	$itk_component(yCutButton) select
2202
2203	itk_component add yCutScale {
2204	::scale $inner.yval -from 100 -to 0 \
2205	-width 10 -orient vertical -showvalue off \
2206	-borderwidth 1 -highlightthickness 0 \
2207	-command [itcl::code $this Slice move y] \
2208	-variable [itcl::scope _settings(-ycutplaneposition)]
2209	} {
2210	usual
2211	ignore -borderwidth -highlightthickness
2212	}
2213	Rappture::Tooltip::for $itk_component(yCutScale) \
2214	"@[itcl::code $this SlicerTip y]"
2215	# Set the default cutplane value before disabling the scale.
2216	$itk_component(yCutScale) set 50
2217	$itk_component(yCutScale) configure -state disabled
2218
2219	# Z-value slicer...
2220	itk_component add zCutButton {
2221	Rappture::PushButton $inner.zbutton \
2222	-onimage [Rappture::icon z-cutplane] \
2223	-offimage [Rappture::icon z-cutplane] \
2224	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
2225	-variable [itcl::scope _settings(-zcutplanevisible)]
2226	}
2227	Rappture::Tooltip::for $itk_component(zCutButton) \
2228	"Toggle the Z cut plane on/off"
2229	$itk_component(zCutButton) select
2230
2231	itk_component add zCutScale {
2232	::scale $inner.zval -from 100 -to 0 \
2233	-width 10 -orient vertical -showvalue off \
2234	-borderwidth 1 -highlightthickness 0 \
2235	-command [itcl::code $this Slice move z] \
2236	-variable [itcl::scope _settings(-zcutplaneposition)]
2237	} {
2238	usual
2239	ignore -borderwidth -highlightthickness
2240	}
2241	$itk_component(zCutScale) set 50
2242	$itk_component(zCutScale) configure -state disabled
2243	Rappture::Tooltip::for $itk_component(zCutScale) \
2244	"@[itcl::code $this SlicerTip z]"
2245
2246	blt::table $inner \
2247	0,1 $inner.visible -anchor w -pady 2 -cspan 4 \
2248	1,1 $itk_component(xCutScale) \
2249	1,2 $itk_component(yCutScale) \
2250	1,3 $itk_component(zCutScale) \
2251	2,1 $itk_component(xCutButton) \
2252	2,2 $itk_component(yCutButton) \
2253	2,3 $itk_component(zCutButton)
2254
2255	blt::table configure $inner r0 r1 r2 c* -resize none
2256	blt::table configure $inner r3 c4 -resize expand
2257	blt::table configure $inner c0 -width 2
2258	blt::table configure $inner c1 c2 c3 -padx 2
2259	}
2260
2261	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2262	set inner [$itk_component(main) insert end \
2263	-title "Camera Settings" \
2264	-icon [Rappture::icon camera]]
2265	$inner configure -borderwidth 4
2266
2267	label $inner.view_l -text "view" -font "Arial 9"
2268	set f [frame $inner.view]
2269	foreach side { front back left right top bottom } {
2270	button $f.$side -image [Rappture::icon view$side] \
2271	-command [itcl::code $this SetOrientation $side]
2272	Rappture::Tooltip::for $f.$side "Change the view to $side"
2273	pack $f.$side -side left
2274	}
2275
2276	blt::table $inner \
2277	0,0 $inner.view_l -anchor e -pady 2 \
2278	0,1 $inner.view -anchor w -pady 2
2279	blt::table configure $inner r0 -resize none
2280
2281	set row 1
2282	set labels { qw qx qy qz xpan ypan zoom }
2283	foreach tag $labels {
2284	label $inner.${tag}label -text $tag -font "Arial 9"
2285	entry $inner.${tag} -font "Arial 9" -bg white \
2286	-textvariable [itcl::scope _settings(-$tag)]
2287	bind $inner.${tag} <Return> \
2288	[itcl::code $this camera set -${tag}]
2289	bind $inner.${tag} <KP_Enter> \
2290	[itcl::code $this camera set -${tag}]
2291	blt::table $inner \
2292	$row,0 $inner.${tag}label -anchor e -pady 2 \
2293	$row,1 $inner.${tag} -anchor w -pady 2
2294	blt::table configure $inner r$row -resize none
2295	incr row
2296	}
2297
2298	blt::table configure $inner c* -resize none
2299	blt::table configure $inner c2 -resize expand
2300	blt::table configure $inner r$row -resize expand
2301	}
2302
2303	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2304	set flowobj ""
2305	foreach key [array names _dataset2flow] {
2306	set flowobj $_dataset2flow($key)
2307	break
2308	}
2309	if { $flowobj == "" } {
2310	return
2311	}
2312	if { [winfo exists $w.frame] } {
2313	destroy $w.frame
2314	}
2315	set inner [frame $w.frame]
2316	blt::table $w \
2317	7,0 $inner -fill both -cspan 2 -anchor nw
2318	array set hints [$flowobj hints]
2319	checkbutton $inner.showstreams -text "Streams Plane" \
2320	-variable [itcl::scope _settings(-streams)] \
2321	-command [itcl::code $this streams $key $hints(name)] \
2322	-font "Arial 9"
2323	Rappture::Tooltip::for $inner.showstreams $hints(description)
2324
2325	checkbutton $inner.showarrows -text "Arrows" \
2326	-variable [itcl::scope _settings(-arrows)] \
2327	-command [itcl::code $this arrows $key $hints(name)] \
2328	-font "Arial 9"
2329
2330	label $inner.particles -text "Particles" -font "Arial 9 bold"
2331	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2332
2333	blt::table $inner \
2334	1,0 $inner.showstreams -anchor w \
2335	2,0 $inner.showarrows -anchor w
2336	blt::table configure $inner c0 c1 -resize none
2337	blt::table configure $inner c2 -resize expand
2338
2339	set row 3
2340	set particles [$flowobj particles]
2341	if { [llength $particles] > 0 } {
2342	blt::table $inner $row,0 $inner.particles -anchor w
2343	incr row
2344	}
2345	foreach part $particles {
2346	array unset info
2347	array set info $part
2348	set name $info(name)
2349	if { ![info exists _settings(-particles-$name)] } {
2350	set _settings(-particles-$name) $info(hide)
2351	}
2352	checkbutton $inner.part$row -text $info(label) \
2353	-variable [itcl::scope _settings(-particles-$name)] \
2354	-onvalue 0 -offvalue 1 \
2355	-command [itcl::code $this particles $key $name] \
2356	-font "Arial 9"
2357	Rappture::Tooltip::for $inner.part$row $info(description)
2358	blt::table $inner $row,0 $inner.part$row -anchor w
2359	if { !$_settings(-particles-$name) } {
2360	$inner.part$row select
2361	}
2362	incr row
2363	}
2364	set boxes [$flowobj boxes]
2365	if { [llength $boxes] > 0 } {
2366	blt::table $inner $row,0 $inner.boxes -anchor w
2367	incr row
2368	}
2369	foreach box $boxes {
2370	array unset info
2371	array set info $box
2372	set name $info(name)
2373	if { ![info exists _settings(-box-$name)] } {
2374	set _settings(-box-$name) $info(hide)
2375	}
2376	checkbutton $inner.box$row -text $info(label) \
2377	-variable [itcl::scope _settings(-box-$name)] \
2378	-onvalue 0 -offvalue 1 \
2379	-command [itcl::code $this box $key $name] \
2380	-font "Arial 9"
2381	Rappture::Tooltip::for $inner.box$row $info(description)
2382	blt::table $inner $row,0 $inner.box$row -anchor w
2383	if { !$_settings(-box-$name) } {
2384	$inner.box$row select
2385	}
2386	incr row
2387	}
2388	blt::table configure $inner r* -resize none
2389	blt::table configure $inner r$row -resize expand
2390	blt::table configure $inner c3 -resize expand
2391	event generate [winfo parent [winfo parent $w]] <Configure>
2392	}
2393
2394	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2395	set bool $_settings(-particles-$name)
2396	SendCmd "$tag particles configure {$name} -hide $bool"
2397	}
2398
2399	itcl::body Rappture::FlowvisViewer::box { tag name } {
2400	set bool $_settings(-box-$name)
2401	SendCmd "$tag box configure {$name} -hide $bool"
2402	}
2403
2404	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2405	set bool $_settings(-streams)
2406	SendCmd "$tag configure -slice $bool"
2407	}
2408
2409	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2410	set bool $_settings(-arrows)
2411	SendCmd "$tag configure -arrows $bool"
2412	}
2413
2414	# ----------------------------------------------------------------------
2415	# USAGE: Slice move x\|y\|z <newval>
2416	#
2417	# Called automatically when the user drags the slider to move the
2418	# cut plane that slices 3D data. Gets the current value from the
2419	# slider and moves the cut plane to the appropriate point in the
2420	# data set.
2421	# ----------------------------------------------------------------------
2422	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2423	switch -- $option {
2424	move {
2425	if {[llength $args] != 2} {
2426	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2427	}
2428	set axis [lindex $args 0]
2429	set newval [lindex $args 1]
2430
2431	set newpos [expr {0.01*$newval}]
2432	set datasets [CurrentDatasets -cutplanes]
2433	set tag [lindex $datasets 0]
2434	SendCmd "cutplane position $newpos $axis $tag"
2435	}
2436	default {
2437	error "bad option \"$option\": should be axis, move, or volume"
2438	}
2439	}
2440	}
2441
2442	# ----------------------------------------------------------------------
2443	# USAGE: SlicerTip <axis>
2444	#
2445	# Used internally to generate a tooltip for the x/y/z slicer controls.
2446	# Returns a message that includes the current slicer value.
2447	# ----------------------------------------------------------------------
2448	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2449	set val [$itk_component(${axis}CutScale) get]
2450	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2451	}
2452
2453	itcl::body Rappture::FlowvisViewer::DoResize {} {
2454	$_arcball resize $_width $_height
2455	SendCmd "screen size $_width $_height"
2456	set _resizePending 0
2457	}
2458
2459	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2460	set _width $w
2461	set _height $h
2462	$_arcball resize $w $h
2463	if { !$_resizePending } {
2464	$_dispatcher event -after 200 !resize
2465	set _resizePending 1
2466	}
2467	}
2468
2469	itcl::body Rappture::FlowvisViewer::EventuallyRedrawLegend {} {
2470	if { !$_resizeLegendPending } {
2471	$_dispatcher event -after 100 !legend
2472	set _resizeLegendPending 1
2473	}
2474	}
2475
2476	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2477	set _flow(goto) $nSteps
2478	if { !$_gotoPending } {
2479	$_dispatcher event -after 1000 !goto
2480	set _gotoPending 1
2481	}
2482	}
2483
2484	# camera --
2485	#
2486	itcl::body Rappture::FlowvisViewer::camera {option args} {
2487	switch -- $option {
2488	"show" {
2489	puts [array get _view]
2490	}
2491	"set" {
2492	set what [lindex $args 0]
2493	set x $_settings($what)
2494	set code [catch { string is double $x } result]
2495	if { $code != 0 \|\| !$result } {
2496	set _settings($what) $_view($what)
2497	return
2498	}
2499	switch -- $what {
2500	"-xpan" - "-ypan" {
2501	set _view($what) $_settings($what)
2502	PanCamera
2503	}
2504	"-qx" - "-qy" - "-qz" - "-qw" {
2505	set _view($what) $_settings($what)
2506	set q [ViewToQuaternion]
2507	$_arcball quaternion $q
2508	SendCmd "camera orient $q"
2509	}
2510	"-zoom" {
2511	set _view($what) $_settings($what)
2512	SendCmd "camera zoom $_view($what)"
2513	}
2514	}
2515	}
2516	}
2517	}
2518
2519	itcl::body Rappture::FlowvisViewer::SendFlowCmd { dataobj comp nbytes numComponents } {
2520	set tag "$dataobj-$comp"
2521	if { ![info exists _dataset2flow($tag)] } {
2522	SendCmd "flow add $tag"
2523	SendCmd "$tag data follows $nbytes $numComponents"
2524	return 0
2525	}
2526	set flowobj $_dataset2flow($tag)
2527	if { $flowobj == "" } {
2528	puts stderr "no flowobj"
2529	return -1
2530	}
2531	SendCmd "if {\[flow exists $tag\]} {flow delete $tag}"
2532	array set info [$flowobj hints]
2533	set _settings(-volume) $info(volume)
2534	set _settings(-outlinevisible) $info(outline)
2535	set _settings(-arrows) $info(arrows)
2536	set _settings(-duration) $info(duration)
2537	$itk_component(speed) value $info(speed)
2538	set cmd {}
2539	append cmd "flow add $tag"
2540	append cmd " -position $info(position)"
2541	append cmd " -axis $info(axis)"
2542	append cmd " -volume $info(volume)"
2543	append cmd " -outline $info(outline)"
2544	append cmd " -slice $info(streams)"
2545	append cmd " -arrows $info(arrows)"
2546	SendCmd $cmd
2547	foreach part [$flowobj particles] {
2548	set cmd {}
2549	array unset info
2550	array set info $part
2551	set color [Color2RGB $info(color)]
2552	append cmd "$tag particles add $info(name)"
2553	append cmd " -position $info(position)"
2554	append cmd " -hide $info(hide)"
2555	append cmd " -axis $info(axis)"
2556	append cmd " -color {$color}"
2557	append cmd " -size $info(size)"
2558	SendCmd $cmd
2559	}
2560	foreach box [$flowobj boxes] {
2561	set cmd {}
2562	array unset info
2563	set info(corner1) ""
2564	set info(corner2) ""
2565	array set info $box
2566	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2567	continue
2568	}
2569	set color [Color2RGB $info(color)]
2570	append cmd "$tag box add $info(name)"
2571	append cmd " -color {$color}"
2572	append cmd " -hide $info(hide)"
2573	append cmd " -linewidth $info(linewidth) "
2574	append cmd " -corner1 {$info(corner1)} "
2575	append cmd " -corner2 {$info(corner2)}"
2576	SendCmd $cmd
2577	}
2578	SendCmd "$tag data follows $nbytes $numComponents"
2579	return 0
2580	}
2581
2582	#
2583	# flow --
2584	#
2585	# Called when the user clicks on the stop or play buttons
2586	# for flow visualization.
2587	#
2588	# $this flow play
2589	# $this flow stop
2590	# $this flow toggle
2591	# $this flow reset
2592	# $this flow pause
2593	# $this flow next
2594	#
2595	itcl::body Rappture::FlowvisViewer::flow { args } {
2596	set option [lindex $args 0]
2597	switch -- $option {
2598	"goto2" {
2599	puts stderr "actually sending \"flow goto $_flow(goto)\""
2600	SendCmd "flow goto $_flow(goto)"
2601	set _gotoPending 0
2602	}
2603	"goto" {
2604	puts stderr "flow goto to $_settings(-currenttime)"
2605	# Figure out how many steps to the current time based upon
2606	# the speed and duration.
2607	set current $_settings(-currenttime)
2608	set speed [$itk_component(speed) value]
2609	set time [str2millisecs $_settings(-duration)]
2610	$itk_component(dial) configure -max $time
2611	set delay [expr int(round(500.0/$speed))]
2612	set timePerStep [expr {double($time) / $delay}]
2613	set nSteps [expr {int(ceil($current/$timePerStep))}]
2614	EventuallyGoto $nSteps
2615	}
2616	"speed" {
2617	set speed [$itk_component(speed) value]
2618	set _flow(delay) [expr int(round(500.0/$speed))]
2619	}
2620	"duration" {
2621	set max [str2millisecs $_settings(-duration)]
2622	if { $max < 0 } {
2623	bell
2624	return
2625	}
2626	set _flow(duration) $max
2627	set _settings(-duration) [millisecs2str $max]
2628	$itk_component(dial) configure -max $max
2629	}
2630	"off" {
2631	set _flow(state) 0
2632	$_dispatcher cancel !play
2633	$itk_component(play) deselect
2634	}
2635	"on" {
2636	flow speed
2637	flow duration
2638	set _flow(state) 1
2639	set _settings(-currenttime) 0
2640	$itk_component(play) select
2641	}
2642	"stop" {
2643	if { $_flow(state) } {
2644	flow off
2645	flow reset
2646	}
2647	}
2648	"pause" {
2649	if { $_flow(state) } {
2650	flow off
2651	}
2652	}
2653	"play" {
2654	# If the flow is currently off, then restart it.
2655	if { !$_flow(state) } {
2656	flow on
2657	# If we're at the end of the flow, reset the flow.
2658	set _settings(-currenttime) \
2659	[expr {$_settings(-currenttime) + $_flow(delay)}]
2660	if { $_settings(-currenttime) >= $_flow(duration) } {
2661	set _settings(-step) 1
2662	SendCmd "flow reset"
2663	}
2664	flow next
2665	}
2666	}
2667	"toggle" {
2668	if { $_settings(-play) } {
2669	flow play
2670	} else {
2671	flow pause
2672	}
2673	}
2674	"reset" {
2675	set _settings(-currenttime) 0
2676	SendCmd "flow reset"
2677	}
2678	"next" {
2679	if { ![winfo viewable $itk_component(3dview)] } {
2680	flow stop
2681	return
2682	}
2683	set _settings(-currenttime) \
2684	[expr {$_settings(-currenttime) + $_flow(delay)}]
2685	if { $_settings(-currenttime) >= $_flow(duration) } {
2686	if { !$_settings(-loop) } {
2687	flow off
2688	return
2689	}
2690	flow reset
2691	} else {
2692	SendCmd "flow next"
2693	}
2694	$_dispatcher event -after $_flow(delay) !play
2695	}
2696	default {
2697	error "bad option \"$option\": should be play, stop, toggle, or reset."
2698	}
2699	}
2700	}
2701
2702	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2703	switch -- $option {
2704	"start" {
2705	$_dispatcher dispatch $this !waiticon \
2706	"[itcl::code $this WaitIcon "next" $widget] ; list"
2707	set _icon 0
2708	$widget configure -image [Rappture::icon bigroller${_icon}]
2709	$_dispatcher event -after 100 !waiticon
2710	}
2711	"next" {
2712	incr _icon
2713	if { $_icon >= 8 } {
2714	set _icon 0
2715	}
2716	$widget configure -image [Rappture::icon bigroller${_icon}]
2717	$_dispatcher event -after 100 !waiticon
2718	}
2719	"stop" {
2720	$_dispatcher cancel !waiticon
2721	}
2722	}
2723	}
2724
2725	itcl::body Rappture::FlowvisViewer::GetVtkData { args } {
2726	# FIXME: We can only put one component of one dataset in a single
2727	# VTK file. To download all components/results, we would need
2728	# to put them in an archive (e.g. zip or tar file)
2729	if { $_first != "" } {
2730	set cname [lindex [$_first components] 0]
2731	set bytes [$_first vtkdata $cname]
2732	return [list .vtk $bytes]
2733	}
2734	puts stderr "Failed to get vtkdata"
2735	return ""
2736	}
2737
2738	itcl::body Rappture::FlowvisViewer::GetImage { args } {
2739	if { [image width $_image(download)] > 0 &&
2740	[image height $_image(download)] > 0 } {
2741	set bytes [$_image(download) data -format "jpeg -quality 100"]
2742	set bytes [Rappture::encoding::decode -as b64 $bytes]
2743	return [list .jpg $bytes]
2744	}
2745	return ""
2746	}
2747
2748	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2749	set token "print[incr _nextToken]"
2750	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2751	set $var ""
2752
2753	# Setup an automatic timeout procedure.
2754	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2755
2756	set popup .flowvisviewerprint
2757	if {![winfo exists $popup]} {
2758	Rappture::Balloon $popup -title "Generating file..."
2759	set inner [$popup component inner]
2760	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2761	label $inner.please -text "This may take a minute." -font "Arial 10"
2762	label $inner.icon -image [Rappture::icon bigroller0]
2763	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2764	-command [list set $var ""]
2765	blt::table $inner \
2766	0,0 $inner.title -cspan 2 \
2767	1,0 $inner.please -anchor w \
2768	1,1 $inner.icon -anchor e \
2769	2,0 $inner.cancel -cspan 2
2770	blt::table configure $inner r0 -pady 4
2771	blt::table configure $inner r2 -pady 4
2772	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2773	} else {
2774	set inner [$popup component inner]
2775	}
2776
2777	$_dispatcher event -after 60000 !pngtimeout
2778	WaitIcon start $inner.icon
2779	grab set $inner
2780	focus $inner.cancel
2781
2782	SendCmd "print $token $width $height"
2783
2784	$popup activate $widget below
2785	update idletasks
2786	update
2787	# We wait here for either
2788	# 1) the png to be delivered or
2789	# 2) timeout or
2790	# 3) user cancels the operation.
2791	tkwait variable $var
2792
2793	# Clean up.
2794	$_dispatcher cancel !pngtimeout
2795	WaitIcon stop $inner.icon
2796	grab release $inner
2797	$popup deactivate
2798	update
2799
2800	if { $_hardcopy($this-$token) != "" } {
2801	return [list .png $_hardcopy($this-$token)]
2802	}
2803	return ""
2804	}
2805
2806	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2807	set token "movie[incr _nextToken]"
2808	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2809	set $var ""
2810
2811	# Setup an automatic timeout procedure.
2812	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2813	set popup .flowvisviewermovie
2814	if {![winfo exists $popup]} {
2815	Rappture::Balloon $popup -title "Generating movie..."
2816	set inner [$popup component inner]
2817	label $inner.title -text "Generating movie for download" \
2818	-font "Arial 10 bold"
2819	label $inner.please -text "This may take a few minutes." \
2820	-font "Arial 10"
2821	label $inner.icon -image [Rappture::icon bigroller0]
2822	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2823	-command [list set $var ""]
2824	blt::table $inner \
2825	0,0 $inner.title -cspan 2 \
2826	1,0 $inner.please -anchor w \
2827	1,1 $inner.icon -anchor e \
2828	2,0 $inner.cancel -cspan 2
2829	blt::table configure $inner r0 -pady 4
2830	blt::table configure $inner r2 -pady 4
2831	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2832	} else {
2833	set inner [$popup component inner]
2834	}
2835	update
2836	# Timeout is set to 10 minutes.
2837	$_dispatcher event -after 600000 !movietimeout
2838	WaitIcon start $inner.icon
2839	grab set $inner
2840	focus $inner.cancel
2841
2842	flow duration
2843	flow speed
2844	set nframes [expr round($_flow(duration) / $_flow(delay))]
2845	set framerate [expr 1000.0 / $_flow(delay)]
2846
2847	# These are specific to MPEG1 video generation
2848	set framerate 25.0
2849	set bitrate 6.0e+6
2850
2851	set start [clock seconds]
2852	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2853
2854	$popup activate $widget below
2855	update idletasks
2856	update
2857	# We wait here until
2858	# 1. the movie is delivered or
2859	# 2. we've timed out or
2860	# 3. the user has canceled the operation.b
2861	tkwait variable $var
2862
2863	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2864
2865	# Clean up.
2866	$_dispatcher cancel !movietimeout
2867	WaitIcon stop $inner.icon
2868	grab release $inner
2869	$popup deactivate
2870	destroy $popup
2871	update
2872
2873	# This will both cancel the movie generation (if it hasn't already
2874	# completed) and reset the flow.
2875	SendCmd "flow reset"
2876	if { $_hardcopy($this-$token) != "" } {
2877	return [list .mpg $_hardcopy($this-$token)]
2878	}
2879	return ""
2880	}
2881
2882	itcl::body Rappture::FlowvisViewer::BuildDownloadPopup { popup command } {
2883	Rappture::Balloon $popup \
2884	-title "[Rappture::filexfer::label downloadWord] as..."
2885	set inner [$popup component inner]
2886	label $inner.summary -text "" -anchor w
2887	radiobutton $inner.vtk_button -text "VTK data file" \
2888	-variable [itcl::scope _downloadPopup(format)] \
2889	-font "Arial 9" \
2890	-value vtk
2891	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2892
2893	radiobutton $inner.image_button -text "Image File" \
2894	-variable [itcl::scope _downloadPopup(format)] \
2895	-font "Arial 9 " \
2896	-value image
2897	Rappture::Tooltip::for $inner.image_button \
2898	"Save as digital image."
2899
2900	set res "640x480"
2901	radiobutton $inner.movie_std -text "Movie (standard $res)" \
2902	-variable [itcl::scope _downloadPopup(format)] \
2903	-value $res
2904	Rappture::Tooltip::for $inner.movie_std \
2905	"Save as movie file."
2906
2907	set res "1024x768"
2908	radiobutton $inner.movie_high -text "Movie (high quality $res)" \
2909	-variable [itcl::scope _downloadPopup(format)] \
2910	-value $res
2911	Rappture::Tooltip::for $inner.movie_high \
2912	"Save as movie file."
2913
2914	button $inner.ok -text "Save" \
2915	-highlightthickness 0 -pady 2 -padx 3 \
2916	-command $command \
2917	-compound left \
2918	-image [Rappture::icon download]
2919
2920	button $inner.cancel -text "Cancel" \
2921	-highlightthickness 0 -pady 2 -padx 3 \
2922	-command [list $popup deactivate] \
2923	-compound left \
2924	-image [Rappture::icon cancel]
2925
2926	blt::table $inner \
2927	0,0 $inner.summary -cspan 2 \
2928	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2929	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2930	3,0 $inner.movie_std -anchor w -cspan 2 -padx { 4 0 } \
2931	4,0 $inner.movie_high -anchor w -cspan 2 -padx { 4 0 } \
2932	6,1 $inner.cancel -width .9i -fill y \
2933	6,0 $inner.ok -padx 2 -width .9i -fill y
2934	blt::table configure $inner r5 -height 4
2935	blt::table configure $inner r6 -pady 4
2936	raise $inner.image_button
2937	$inner.vtk_button invoke
2938	return $inner
2939	}
2940
2941	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2942	set parts [split $value :]
2943	set secs 0
2944	set mins 0
2945	if { [llength $parts] == 1 } {
2946	scan [lindex $parts 0] "%d" secs
2947	} else {
2948	scan [lindex $parts 1] "%d" secs
2949	scan [lindex $parts 0] "%d" mins
2950	}
2951	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2952	if { $ms > 600000.0 } {
2953	set ms 600000.0
2954	}
2955	if { $ms == 0.0 } {
2956	set ms 60000.0
2957	}
2958	return $ms
2959	}
2960
2961	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2962	set min [expr floor($value / 60000.0)]
2963	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2964	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2965	}
2966
2967	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2968	array set positions {
2969	front "1 0 0 0"
2970	back "0 0 1 0"
2971	left "0.707107 0 -0.707107 0"
2972	right "0.707107 0 0.707107 0"
2973	top "0.707107 -0.707107 0 0"
2974	bottom "0.707107 0.707107 0 0"
2975	}
2976	foreach name { -qw -qx -qy -qz } value $positions($side) {
2977	set _view($name) $value
2978	}
2979	set q [ViewToQuaternion]
2980	$_arcball quaternion $q
2981	SendCmd "camera orient $q"
2982	SendCmd "camera reset"
2983	set _view(-xpan) 0
2984	set _view(-ypan) 0
2985	set _view(-zoom) 1.0
2986	set _settings(-xpan) $_view(-xpan)
2987	set _settings(-ypan) $_view(-ypan)
2988	set _settings(-zoom) $_view(-zoom)
2989	}
2990
2991	#
2992	# BuildVolumeComponents --
2993	#
2994	# This is called from the "scale" method which is called when a new
2995	# dataset is added or deleted. It repopulates the dropdown menu of
2996	# volume component names. It sets the current component to the first
2997	# component in the list (of components found). Finally, if there is
2998	# only one component, don't display the label or the combobox in the
2999	# volume settings tab.
3000	#
3001	itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
3002	$itk_component(volcomponents) choices delete 0 end
3003	foreach name $_componentsList {
3004	$itk_component(volcomponents) choices insert end $name $name
3005	}
3006	set _current [lindex $_componentsList 0]
3007	$itk_component(volcomponents) value $_current
3008	}
3009
3010	#
3011	# GetDatasetsWithComponents --
3012	#
3013	# Returns a list of all the datasets (known by the combination of their
3014	# data object and component name) that match the given component name.
3015	# For example, this is used where we want to change the settings of
3016	# volumes that have the current component.
3017	#
3018	itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
3019	if { ![info exists _volcomponents($cname)] } {
3020	return ""
3021	}
3022	set list ""
3023	foreach tag $_volcomponents($cname) {
3024	if { ![info exists _serverDatasets($tag)] } {
3025	continue
3026	}
3027	lappend list $tag
3028	}
3029	return $list
3030	}

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