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source: trunk/gui/scripts/flowvisviewer.tcl @ 5274

Last change on this file since 5274 was 5274, checked in by ldelgass, 9 years ago
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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 Flowvis server running on a rendering farm, transmits
7	# data, and displays the results.
8	#
9	# ======================================================================
10	# AUTHOR: Michael McLennan, Purdue University
11	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
12	#
13	# See the file "license.terms" for information on usage and redistribution of
14	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
15	# ======================================================================
16	package require Itk
17	package require BLT
18	package require Img
19
20	option add *FlowvisViewer.width 5i widgetDefault
21	option add FlowvisViewercursor crosshair widgetDefault
22	option add *FlowvisViewer.height 4i widgetDefault
23	option add *FlowvisViewer.foreground black widgetDefault
24	option add *FlowvisViewer.controlBackground gray widgetDefault
25	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
26	option add *FlowvisViewer.plotBackground black widgetDefault
27	option add *FlowvisViewer.plotForeground white widgetDefault
28	option add *FlowvisViewer.plotOutline gray widgetDefault
29	option add *FlowvisViewer.font \
30	--helvetica-medium-r-normal--12-* widgetDefault
31
32	# must use this name -- plugs into Rappture::resources::load
33	proc FlowvisViewer_init_resources {} {
34	Rappture::resources::register \
35	nanovis_server Rappture::FlowvisViewer::SetServerList
36	}
37
38	itcl::class Rappture::FlowvisViewer {
39	inherit Rappture::VisViewer
40
41	itk_option define -plotforeground plotForeground Foreground ""
42	itk_option define -plotbackground plotBackground Background ""
43	itk_option define -plotoutline plotOutline PlotOutline ""
44
45	constructor { hostlist args } {
46	Rappture::VisViewer::constructor $hostlist
47	} {
48	# defined below
49	}
50	destructor {
51	# defined below
52	}
53	public proc SetServerList { namelist } {
54	Rappture::VisViewer::SetServerList "nanovis" $namelist
55	}
56	public method add {dataobj {settings ""}}
57	public method camera {option args}
58	public method delete {args}
59	public method disconnect {}
60	public method download {option args}
61	public method flow {option}
62	public method get {args}
63	public method isconnected {}
64	public method limits { cname }
65	public method overMarker { m x }
66	public method parameters {title args} {
67	# do nothing
68	}
69	public method removeDuplicateMarker { m x }
70	public method scale {args}
71	public method updateTransferFunctions {}
72
73	# soon to be removed.
74	private method Flow {option args}
75	private method Play {}
76	private method Pause {}
77
78	# The following methods are only used by this class.
79	private method AddIsoMarker { x y }
80	private method AdjustSetting {what {value ""}}
81	private method BuildCameraTab {}
82	private method BuildCutplanesTab {}
83	private method BuildViewTab {}
84	private method BuildVolumeComponents {}
85	private method BuildVolumeTab {}
86	private method ComputeTransferFunction { tf }
87	private method Connect {}
88	private method CurrentVolumeIds {{what -all}}
89	private method Disconnect {}
90	private method DrawLegend { tf }
91	private method EventuallyResize { w h }
92	private method EventuallyGoto { nSteps }
93	private method EventuallyResizeLegend { }
94	private method GetDatasetsWithComponent { cname }
95	private method GetFlowInfo { widget }
96	private method GetMovie { widget width height }
97	private method GetPngImage { widget width height }
98	private method InitSettings { args }
99	private method NameTransferFunction { dataobj comp }
100	private method Pan {option x y}
101	private method PanCamera {}
102	private method ParseLevelsOption { tf levels }
103	private method ParseMarkersOption { tf markers }
104	private method QuaternionToView { q } {
105	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
106	}
107	private method Rebuild {}
108	private method ReceiveData { args }
109	private method ReceiveImage { args }
110	private method ReceiveLegend { tf vmin vmax size }
111	private method Resize {}
112	private method ResizeLegend {}
113	private method Rotate {option x y}
114	private method SendFlowCmd { dataobj comp nbytes extents }
115	private method SendTransferFunctions {}
116	private method SetOrientation { side }
117	private method Slice {option args}
118	private method SlicerTip {axis}
119	private method ViewToQuaternion {} {
120	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
121	}
122	private method WaitIcon { option widget }
123	private method Zoom {option}
124	private method arrows { tag name }
125	private method box { tag name }
126	private method millisecs2str { value }
127	private method particles { tag name }
128	private method str2millisecs { value }
129	private method streams { tag name }
130
131	private variable _arcball ""
132	private variable _dlist "" ;# list of data objects
133	private variable _obj2ovride ;# maps dataobj => style override
134	private variable _serverDatasets ;# maps dataobj-component to volume ID
135	# in the server
136	private variable _recvdDatasets ;# list of data objs to send to server
137	private variable _dataset2style ;# maps dataobj-component to transfunc
138	private variable _style2datasets ;# maps tf back to list of
139	# dataobj-components using the tf.
140	private variable _dataset2flow ;# Maps dataobj-component to a flow.
141
142	private variable _reset 1 ;# Connection to server has been reset
143	private variable _click ;# info used for rotate operations
144	private variable _limits ;# Autoscale min/max for all axes
145	private variable _view ;# View params for 3D view
146	private variable _isomarkers ;# array of isosurface level values 0..1
147	private common _settings
148	private variable _activeTf "" ;# The currently active transfer function
149	private variable _first "" ;# This is the topmost volume.
150	private variable _volcomponents ;# Array of components found
151	private variable _componentsList ;# Array of components found
152	private variable _nextToken 0
153	private variable _icon 0
154	private variable _flow
155
156	private common _downloadPopup ;# download options from popup
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _resizeLegendPending 0
162	private variable _gotoPending 0
163	}
164
165	itk::usual FlowvisViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
174	set _serverType "nanovis"
175
176	# Draw legend event
177	$_dispatcher register !legend
178	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
179
180	# Send transferfunctions event
181	$_dispatcher register !send_transfunc
182	$_dispatcher dispatch $this !send_transfunc \
183	"[itcl::code $this SendTransferFunctions]; list"
184
185	# Rebuild event.
186	$_dispatcher register !rebuild
187	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
188
189	# Resize event.
190	$_dispatcher register !resize
191	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
192
193	$_dispatcher register !play
194	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
195
196	# Draw legend event
197	$_dispatcher register !goto
198	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
199
200	$_dispatcher register !movietimeout
201	$_dispatcher register !waiticon
202
203	set _flow(state) 0
204
205	array set _downloadPopup {
206	format draft
207	}
208	#
209	# Populate parser with commands handle incoming requests
210	#
211	$_parser alias image [itcl::code $this ReceiveImage]
212	$_parser alias legend [itcl::code $this ReceiveLegend]
213	$_parser alias data [itcl::code $this ReceiveData]
214
215	# Initialize the view to some default parameters.
216	array set _view {
217	-qw 0.853553
218	-qx -0.353553
219	-qy 0.353553
220	-qz 0.146447
221	-xpan 0
222	-ypan 0
223	-zoom 1.0
224	}
225	set _arcball [blt::arcball create 100 100]
226	$_arcball quaternion [ViewToQuaternion]
227
228	set _limits(v) [list 0.0 1.0]
229	set _reset 1
230
231	array set _settings [subst {
232	-qw $_view(-qw)
233	-qx $_view(-qx)
234	-qy $_view(-qy)
235	-qz $_view(-qz)
236	-zoom $_view(-zoom)
237	-xpan $_view(-xpan)
238	-ypan $_view(-ypan)
239	$this-arrows 0
240	$this-currenttime 0
241	$this-duration 1:00
242	$this-loop 0
243	$this-play 0
244	$this-speed 500
245	$this-step 0
246	$this-streams 0
247	$this-volume 1
248	$this-ambient 60
249	$this-diffuse 40
250	$this-light2side 1
251	$this-opacity 50
252	$this-specularLevel 30
253	$this-specularExponent 90
254	$this-thickness 350
255	$this-cutplaneVisible 0
256	$this-xcutplane 1
257	$this-xcutposition 0
258	$this-ycutplane 1
259	$this-ycutposition 0
260	$this-zcutplane 1
261	$this-zcutposition 0
262	}]
263
264	itk_component add 3dview {
265	label $itk_component(plotarea).view -image $_image(plot) \
266	-highlightthickness 0 -borderwidth 0
267	} {
268	usual
269	ignore -highlightthickness -borderwidth -background
270	}
271	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
272
273	set f [$itk_component(main) component controls]
274	itk_component add reset {
275	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
276	-highlightthickness 0 \
277	-image [Rappture::icon reset-view] \
278	-command [itcl::code $this Zoom reset]
279	} {
280	usual
281	ignore -highlightthickness
282	}
283	pack $itk_component(reset) -side top -padx 2 -pady 2
284	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
285
286	itk_component add zoomin {
287	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
288	-highlightthickness 0 \
289	-image [Rappture::icon zoom-in] \
290	-command [itcl::code $this Zoom in]
291	} {
292	usual
293	ignore -highlightthickness
294	}
295	pack $itk_component(zoomin) -side top -padx 2 -pady 2
296	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
297
298	itk_component add zoomout {
299	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon zoom-out] \
302	-command [itcl::code $this Zoom out]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(zoomout) -side top -padx 2 -pady 2
308	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
309
310	itk_component add volume {
311	Rappture::PushButton $f.volume \
312	-onimage [Rappture::icon volume-on] \
313	-offimage [Rappture::icon volume-off] \
314	-command [itcl::code $this AdjustSetting volume] \
315	-variable [itcl::scope _settings($this-volume)]
316	}
317	$itk_component(volume) select
318	Rappture::Tooltip::for $itk_component(volume) \
319	"Toggle the volume cloud on/off"
320	pack $itk_component(volume) -padx 2 -pady 2
321
322	itk_component add cutplane {
323	Rappture::PushButton $f.cutplane \
324	-onimage [Rappture::icon cutbutton] \
325	-offimage [Rappture::icon cutbutton] \
326	-variable [itcl::scope _settings($this-cutplaneVisible)] \
327	-command [itcl::code $this AdjustSetting cutplaneVisible]
328	}
329	Rappture::Tooltip::for $itk_component(cutplane) \
330	"Show/Hide cutplanes"
331	pack $itk_component(cutplane) -padx 2 -pady 2
332
333	if { [catch {
334	BuildViewTab
335	BuildVolumeTab
336	BuildCutplanesTab
337	BuildCameraTab
338	} errs] != 0 } {
339	global errorInfo
340	puts stderr "errs=$errs errorInfo=$errorInfo"
341	}
342
343	bind $itk_component(3dview) <Configure> \
344	[itcl::code $this EventuallyResize %w %h]
345
346	# Legend
347	set _image(legend) [image create photo]
348	itk_component add legend {
349	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
350	} {
351	usual
352	ignore -highlightthickness
353	rename -background -plotbackground plotBackground Background
354	}
355	bind $itk_component(legend) <Configure> \
356	[itcl::code $this EventuallyResizeLegend]
357
358	# Hack around the Tk panewindow. The problem is that the requested
359	# size of the 3d view isn't set until an image is retrieved from
360	# the server. So the panewindow uses the tiny size.
361	set w 10000
362	pack forget $itk_component(3dview)
363	blt::table $itk_component(plotarea) \
364	0,0 $itk_component(3dview) -fill both -reqwidth $w \
365	1,0 $itk_component(legend) -fill x
366	blt::table configure $itk_component(plotarea) r1 -resize none
367	# Create flow controls...
368
369	itk_component add flowcontrols {
370	frame $itk_interior.flowcontrols
371	} {
372	usual
373	rename -background -controlbackground controlBackground Background
374	}
375	pack forget $itk_component(main)
376	blt::table $itk_interior \
377	0,0 $itk_component(main) -fill both \
378	1,0 $itk_component(flowcontrols) -fill x
379	blt::table configure $itk_interior r1 -resize none
380
381	# Rewind
382	itk_component add rewind {
383	button $itk_component(flowcontrols).reset \
384	-borderwidth 1 -padx 1 -pady 1 \
385	-image [Rappture::icon flow-rewind] \
386	-command [itcl::code $this flow reset]
387	} {
388	usual
389	ignore -borderwidth
390	rename -highlightbackground -controlbackground controlBackground \
391	Background
392	}
393	Rappture::Tooltip::for $itk_component(rewind) \
394	"Rewind flow"
395
396	# Stop
397	itk_component add stop {
398	button $itk_component(flowcontrols).stop \
399	-borderwidth 1 -padx 1 -pady 1 \
400	-image [Rappture::icon flow-stop] \
401	-command [itcl::code $this flow stop]
402	} {
403	usual
404	ignore -borderwidth
405	rename -highlightbackground -controlbackground controlBackground \
406	Background
407	}
408	Rappture::Tooltip::for $itk_component(stop) \
409	"Stop flow"
410
411	# Play
412	itk_component add play {
413	Rappture::PushButton $itk_component(flowcontrols).play \
414	-onimage [Rappture::icon flow-pause] \
415	-offimage [Rappture::icon flow-play] \
416	-variable [itcl::scope _settings($this-play)] \
417	-command [itcl::code $this flow toggle]
418	}
419	set fg [option get $itk_component(hull) font Font]
420	Rappture::Tooltip::for $itk_component(play) \
421	"Play/Pause flow"
422
423	# Loop
424	itk_component add loop {
425	Rappture::PushButton $itk_component(flowcontrols).loop \
426	-onimage [Rappture::icon flow-loop] \
427	-offimage [Rappture::icon flow-loop] \
428	-variable [itcl::scope _settings($this-loop)]
429	}
430	Rappture::Tooltip::for $itk_component(loop) \
431	"Play continuously"
432
433	itk_component add dial {
434	Rappture::Flowdial $itk_component(flowcontrols).dial \
435	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
436	-linecolor "" -activelinecolor "" \
437	-min 0.0 -max 1.0 \
438	-variable [itcl::scope _settings($this-currenttime)] \
439	-knobimage [Rappture::icon knob2] -knobposition center@middle
440	} {
441	usual
442	ignore -dialprogresscolor
443	rename -background -controlbackground controlBackground Background
444	}
445	$itk_component(dial) current 0.0
446	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
447	# Duration
448	itk_component add duration {
449	entry $itk_component(flowcontrols).duration \
450	-textvariable [itcl::scope _settings($this-duration)] \
451	-bg white -width 6 -font "arial 9"
452	} {
453	usual
454	ignore -highlightthickness -background
455	}
456	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
457	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
458	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
459	Rappture::Tooltip::for $itk_component(duration) \
460	"Set duration of flow (format is min:sec)"
461
462
463	itk_component add durationlabel {
464	label $itk_component(flowcontrols).durationl \
465	-text "Duration:" -font $fg \
466	-highlightthickness 0
467	} {
468	usual
469	ignore -highlightthickness
470	rename -background -controlbackground controlBackground Background
471	}
472
473	itk_component add speedlabel {
474	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
475	-highlightthickness 0
476	} {
477	usual
478	ignore -highlightthickness
479	rename -background -controlbackground controlBackground Background
480	}
481
482	# Speed
483	itk_component add speed {
484	Rappture::Flowspeed $itk_component(flowcontrols).speed \
485	-min 1 -max 10 -width 3 -font "arial 9"
486	} {
487	usual
488	ignore -highlightthickness
489	rename -background -controlbackground controlBackground Background
490	}
491	Rappture::Tooltip::for $itk_component(speed) \
492	"Change speed of flow"
493
494	$itk_component(speed) value 1
495	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
496
497
498	blt::table $itk_component(flowcontrols) \
499	0,0 $itk_component(rewind) -padx {3 0} \
500	0,1 $itk_component(stop) -padx {2 0} \
501	0,2 $itk_component(play) -padx {2 0} \
502	0,3 $itk_component(loop) -padx {2 0} \
503	0,4 $itk_component(dial) -fill x -padx {2 0 } \
504	0,5 $itk_component(duration) -padx { 0 0} \
505	0,7 $itk_component(speed) -padx {2 3}
506
507	# 0,6 $itk_component(speedlabel) -padx {2 0}
508	blt::table configure $itk_component(flowcontrols) c* -resize none
509	blt::table configure $itk_component(flowcontrols) c4 -resize both
510	blt::table configure $itk_component(flowcontrols) r0 -pady 1
511	# Bindings for rotation via mouse
512	bind $itk_component(3dview) <ButtonPress-1> \
513	[itcl::code $this Rotate click %x %y]
514	bind $itk_component(3dview) <B1-Motion> \
515	[itcl::code $this Rotate drag %x %y]
516	bind $itk_component(3dview) <ButtonRelease-1> \
517	[itcl::code $this Rotate release %x %y]
518
519	bind $itk_component(3dview) <Configure> \
520	[itcl::code $this EventuallyResize %w %h]
521
522	# Bindings for panning via mouse
523	bind $itk_component(3dview) <ButtonPress-2> \
524	[itcl::code $this Pan click %x %y]
525	bind $itk_component(3dview) <B2-Motion> \
526	[itcl::code $this Pan drag %x %y]
527	bind $itk_component(3dview) <ButtonRelease-2> \
528	[itcl::code $this Pan release %x %y]
529
530	# Bindings for panning via keyboard
531	bind $itk_component(3dview) <KeyPress-Left> \
532	[itcl::code $this Pan set -10 0]
533	bind $itk_component(3dview) <KeyPress-Right> \
534	[itcl::code $this Pan set 10 0]
535	bind $itk_component(3dview) <KeyPress-Up> \
536	[itcl::code $this Pan set 0 -10]
537	bind $itk_component(3dview) <KeyPress-Down> \
538	[itcl::code $this Pan set 0 10]
539	bind $itk_component(3dview) <Shift-KeyPress-Left> \
540	[itcl::code $this Pan set -2 0]
541	bind $itk_component(3dview) <Shift-KeyPress-Right> \
542	[itcl::code $this Pan set 2 0]
543	bind $itk_component(3dview) <Shift-KeyPress-Up> \
544	[itcl::code $this Pan set 0 -2]
545	bind $itk_component(3dview) <Shift-KeyPress-Down> \
546	[itcl::code $this Pan set 0 2]
547
548	# Bindings for zoom via keyboard
549	bind $itk_component(3dview) <KeyPress-Prior> \
550	[itcl::code $this Zoom out]
551	bind $itk_component(3dview) <KeyPress-Next> \
552	[itcl::code $this Zoom in]
553
554	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
555
556	if {[string equal "x11" [tk windowingsystem]]} {
557	# Bindings for zoom via mouse
558	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
559	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
560	}
561
562	set _image(download) [image create photo]
563
564	eval itk_initialize $args
565
566	EnableWaitDialog 900
567	Connect
568	}
569
570	# ----------------------------------------------------------------------
571	# DESTRUCTOR
572	# ----------------------------------------------------------------------
573	itcl::body Rappture::FlowvisViewer::destructor {} {
574	$_dispatcher cancel !rebuild
575	$_dispatcher cancel !send_transfunc
576	image delete $_image(plot)
577	image delete $_image(legend)
578	image delete $_image(download)
579	catch { blt::arcball destroy $_arcball }
580	array unset _settings $this-*
581	}
582
583	# ----------------------------------------------------------------------
584	# USAGE: add <dataobj> ?<settings>?
585	#
586	# Clients use this to add a data object to the plot. The optional
587	# <settings> are used to configure the plot. Allowed settings are
588	# -color, -brightness, -width, -linestyle, and -raise.
589	# ----------------------------------------------------------------------
590	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
591	array set params {
592	-color auto
593	-width 1
594	-linestyle solid
595	-brightness 0
596	-raise 0
597	-description ""
598	-param ""
599	}
600	array set params $settings
601	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
602	# can't handle -autocolors yet
603	set params(-color) black
604	}
605	foreach comp [$dataobj components] {
606	set flowobj [$dataobj flowhints $comp]
607	if { $flowobj == "" } {
608	puts stderr "no flowhints $dataobj-$comp"
609	continue
610	}
611	set _dataset2flow($dataobj-$comp) $flowobj
612	}
613	set pos [lsearch -exact $_dlist $dataobj]
614	if {$pos < 0} {
615	lappend _dlist $dataobj
616	set _obj2ovride($dataobj-color) $params(-color)
617	set _obj2ovride($dataobj-width) $params(-width)
618	set _obj2ovride($dataobj-raise) $params(-raise)
619	$_dispatcher event -idle !rebuild
620	}
621	}
622
623	# ----------------------------------------------------------------------
624	# USAGE: get ?-objects?
625	# USAGE: get ?-image 3dview\|legend?
626	#
627	# Clients use this to query the list of objects being plotted, in
628	# order from bottom to top of this result. The optional "-image"
629	# flag can also request the internal images being shown.
630	# ----------------------------------------------------------------------
631	itcl::body Rappture::FlowvisViewer::get {args} {
632	if {[llength $args] == 0} {
633	set args "-objects"
634	}
635
636	set op [lindex $args 0]
637	switch -- $op {
638	-objects {
639	# put the dataobj list in order according to -raise options
640	set dlist $_dlist
641	foreach obj $dlist {
642	if {[info exists _obj2ovride($obj-raise)] &&
643	$_obj2ovride($obj-raise)} {
644	set i [lsearch -exact $dlist $obj]
645	if {$i >= 0} {
646	set dlist [lreplace $dlist $i $i]
647	lappend dlist $obj
648	}
649	}
650	}
651	return $dlist
652	}
653	-image {
654	if {[llength $args] != 2} {
655	error "wrong # args: should be \"get -image 3dview\|legend\""
656	}
657	switch -- [lindex $args end] {
658	3dview {
659	return $_image(plot)
660	}
661	legend {
662	return $_image(legend)
663	}
664	default {
665	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
666	}
667	}
668	}
669	default {
670	error "bad option \"$op\": should be -objects or -image"
671	}
672	}
673	}
674
675	# ----------------------------------------------------------------------
676	# USAGE: delete ?<dataobj1> <dataobj2> ...?
677	#
678	# Clients use this to delete a dataobj from the plot. If no dataobjs
679	# are specified, then all dataobjs are deleted. No data objects are
680	# deleted. They are only removed from the display list.
681	#
682	# ----------------------------------------------------------------------
683	itcl::body Rappture::FlowvisViewer::delete {args} {
684	flow stop
685	if {[llength $args] == 0} {
686	set args $_dlist
687	}
688
689	# Delete all specified dataobjs
690	set changed 0
691	foreach dataobj $args {
692	set pos [lsearch -exact $_dlist $dataobj]
693	if { $pos >= 0 } {
694	foreach comp [$dataobj components] {
695	array unset _limits $dataobj-$comp-*
696	}
697	set _dlist [lreplace $_dlist $pos $pos]
698	array unset _obj2ovride $dataobj-*
699	array unset _dataset2flow $dataobj-*
700	array unset _serverDatasets $dataobj-*
701	array unset _dataset2style $dataobj-*
702	set changed 1
703	}
704	}
705	# If anything changed, then rebuild the plot
706	if {$changed} {
707	# Repair the reverse lookup
708	foreach tf [array names _style2datasets] {
709	set list {}
710	foreach {dataobj comp} $_style2datasets($tf) break
711	if { [info exists _serverDatasets($dataobj-$comp)] } {
712	lappend list $dataobj $comp
713	}
714	if { $list == "" } {
715	array unset _style2datasets $tf
716	} else {
717	set _style2datasets($tf) $list
718	}
719	}
720	$_dispatcher event -idle !rebuild
721	}
722	}
723
724	# ----------------------------------------------------------------------
725	# USAGE: scale ?<data1> <data2> ...?
726	#
727	# Sets the default limits for the overall plot according to the
728	# limits of the data for all of the given <data> objects. This
729	# accounts for all objects--even those not showing on the screen.
730	# Because of this, the limits are appropriate for all objects as
731	# the user scans through data in the ResultSet viewer.
732	# ----------------------------------------------------------------------
733	itcl::body Rappture::FlowvisViewer::scale {args} {
734	array set style {
735	-color BCGYR
736	-levels 6
737	-markers ""
738	-opacity 0.5
739	}
740	array unset _limits
741	array unset _volcomponents
742	foreach dataobj $args {
743	if { ![$dataobj isvalid] } {
744	continue; # Object doesn't contain valid data.
745	}
746	foreach cname [$dataobj components] {
747	if { ![info exists _volcomponents($cname)] } {
748	lappend _componentsList $cname
749	array set style [lindex [$dataobj components -style $cname] 0]
750	set cmap [ColorsToColormap $style(-color)]
751	set _settings($cname-colormap) $style(-color)
752	}
753	lappend _volcomponents($cname) $dataobj-$cname
754	array unset limits
755	array set limits [$dataobj valueLimits $cname]
756	set _limits($cname) $limits(v)
757	}
758	foreach axis {x y z v} {
759	foreach { min max } [$dataobj limits $axis] break
760	if {"" != $min && "" != $max} {
761	if { ![info exists _limits($axis)] } {
762	set _limits($axis) [list $min $max]
763	continue
764	}
765	foreach {amin amax} $_limits($axis) break
766	if {$min < $amin} {
767	set amin $min
768	}
769	if {$max > $amax} {
770	set amax $max
771	}
772	set _limits($axis) [list $amin $amax]
773	}
774	}
775	}
776	#BuildVolumeComponents
777	}
778
779	# ----------------------------------------------------------------------
780	# USAGE: download coming
781	# USAGE: download controls <downloadCommand>
782	# USAGE: download now
783	#
784	# Clients use this method to create a downloadable representation
785	# of the plot. Returns a list of the form {ext string}, where
786	# "ext" is the file extension (indicating the type of data) and
787	# "string" is the data itself.
788	# ----------------------------------------------------------------------
789	itcl::body Rappture::FlowvisViewer::download {option args} {
790	set popup .flowvisviewerdownload
791	switch $option {
792	coming {
793	if {[catch {
794	blt::winop snap $itk_component(plotarea) $_image(download)
795	}]} {
796	$_image(download) configure -width 1 -height 1
797	$_image(download) put #000000
798	}
799	}
800	controls {
801	if {![winfo exists $popup]} {
802	# if we haven't created the popup yet, do it now
803	Rappture::Balloon $popup \
804	-title "[Rappture::filexfer::label downloadWord] as..."
805	set inner [$popup component inner]
806	label $inner.summary -text "" -anchor w
807	pack $inner.summary -side top
808	set img $_image(plot)
809	set res "[image width $img]x[image height $img]"
810	radiobutton $inner.draft -text "Image (draft $res)" \
811	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
812	-value draft
813	pack $inner.draft -anchor w
814
815	set res "640x480"
816	radiobutton $inner.medium -text "Movie (standard $res)" \
817	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
818	-value $res
819	pack $inner.medium -anchor w
820
821	set res "1024x768"
822	radiobutton $inner.high -text "Movie (high quality $res)" \
823	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
824	-value $res
825	pack $inner.high -anchor w
826	button $inner.go -text [Rappture::filexfer::label download] \
827	-command [lindex $args 0]
828	pack $inner.go -pady 4
829	$inner.draft select
830	} else {
831	set inner [$popup component inner]
832	}
833	set num [llength [get]]
834	set num [expr {($num == 1) ? "1 result" : "$num results"}]
835	set word [Rappture::filexfer::label downloadWord]
836	$inner.summary configure -text "$word $num in the following format:"
837	update idletasks ;# fix initial sizes
838	update
839	return $popup
840	}
841	now {
842	if { [winfo exists $popup] } {
843	$popup deactivate
844	}
845	switch -- $_downloadPopup(format) {
846	draft {
847	# Get the image data (as base64) and decode it back to
848	# binary. This is better than writing to temporary
849	# files. When we switch to the BLT picture image it
850	# won't be necessary to decode the image data.
851	set bytes [$_image(plot) data -format "jpeg -quality 100"]
852	set bytes [Rappture::encoding::decode -as b64 $bytes]
853	return [list .jpg $bytes]
854	}
855	"640x480" {
856	return [$this GetMovie [lindex $args 0] 640 480]
857	}
858	"1024x768" {
859	return [$this GetMovie [lindex $args 0] 1024 768]
860	}
861	default {
862	error "bad download format $_downloadPopup(format)"
863	}
864	}
865	}
866	default {
867	error "bad option \"$option\": should be coming, controls, now"
868	}
869	}
870	}
871
872	# ----------------------------------------------------------------------
873	# USAGE: Connect ?<host:port>,<host:port>...?
874	#
875	# Clients use this method to establish a connection to a new
876	# server, or to reestablish a connection to the previous server.
877	# Any existing connection is automatically closed.
878	# ----------------------------------------------------------------------
879	itcl::body Rappture::FlowvisViewer::Connect {} {
880	set _hosts [GetServerList "nanovis"]
881	if { "" == $_hosts } {
882	return 0
883	}
884	set _reset 1
885	set result [VisViewer::Connect $_hosts]
886	if { $result } {
887	if { $_reportClientInfo } {
888	# Tell the server the viewer, hub, user and session.
889	# Do this immediately on connect before buffering any commands
890	global env
891
892	set info {}
893	set user "???"
894	if { [info exists env(USER)] } {
895	set user $env(USER)
896	}
897	set session "???"
898	if { [info exists env(SESSION)] } {
899	set session $env(SESSION)
900	}
901	lappend info "version" "$Rappture::version"
902	lappend info "build" "$Rappture::build"
903	lappend info "svnurl" "$Rappture::svnurl"
904	lappend info "installdir" "$Rappture::installdir"
905	lappend info "hub" [exec hostname]
906	lappend info "client" "flowvisviewer"
907	lappend info "user" $user
908	lappend info "session" $session
909	SendCmd "clientinfo [list $info]"
910	}
911
912	set w [winfo width $itk_component(3dview)]
913	set h [winfo height $itk_component(3dview)]
914	EventuallyResize $w $h
915	}
916	return $result
917	}
918
919	#
920	# isconnected --
921	#
922	# Indicates if we are currently connected to the visualization server.
923	#
924	itcl::body Rappture::FlowvisViewer::isconnected {} {
925	return [VisViewer::IsConnected]
926	}
927
928	#
929	# disconnect --
930	#
931	itcl::body Rappture::FlowvisViewer::disconnect {} {
932	Disconnect
933	}
934
935	#
936	# Disconnect --
937	#
938	# Clients use this method to disconnect from the current rendering
939	# server.
940	#
941	itcl::body Rappture::FlowvisViewer::Disconnect {} {
942	VisViewer::Disconnect
943
944	# disconnected -- no more data sitting on server
945	array unset _serverDatasets
946	}
947
948	# ----------------------------------------------------------------------
949	# USAGE: SendTransferFunctions
950	# ----------------------------------------------------------------------
951	itcl::body Rappture::FlowvisViewer::SendTransferFunctions {} {
952	if { $_activeTf == "" } {
953	puts stderr "no active tf"
954	return
955	}
956	set tf $_activeTf
957	if { $_first == "" } {
958	puts stderr "no first"
959	return
960	}
961
962	# Ensure that the global thickness setting (in the slider settings widget)
963	# is used for the active transfer-function. Update the values in the
964	# _settings varible.
965
966	set value $_settings($this-thickness)
967	# Scale values between 0.00001 and 0.01000
968	set thickness [expr {double($value) * 0.0001}]
969	set _settings($this-$tf-thickness) $thickness
970
971	foreach key [array names _dataset2style $_first-*] {
972	if { [info exists _dataset2style($key)] } {
973	foreach tf $_dataset2style($key) {
974	ComputeTransferFunction $tf
975	}
976	}
977	}
978	EventuallyResizeLegend
979	}
980
981	# ----------------------------------------------------------------------
982	# USAGE: ReceiveImage -bytes $size -type $type -token $token
983	#
984	# Invoked automatically whenever the "image" command comes in from
985	# the rendering server. Indicates that binary image data with the
986	# specified <size> will follow.
987	# ----------------------------------------------------------------------
988	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
989	array set info {
990	-token "???"
991	-bytes 0
992	-type image
993	}
994	array set info $args
995	set bytes [ReceiveBytes $info(-bytes)]
996	ReceiveEcho <<line "<read $info(-bytes) bytes"
997	switch -- $info(-type) {
998	"image" {
999	$_image(plot) configure -data $bytes
1000	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1001	}
1002	"print" {
1003	set tag $this-$info(-token)
1004	set _hardcopy($tag) $bytes
1005	}
1006	"movie" {
1007	set tag $this-$info(-token)
1008	set _hardcopy($tag) $bytes
1009	}
1010	default {
1011	puts stderr "unknown download type $info(-type)"
1012	}
1013	}
1014	}
1015
1016	#
1017	# DrawLegend --
1018	#
1019	itcl::body Rappture::FlowvisViewer::DrawLegend { tag } {
1020	set c $itk_component(legend)
1021	set w [winfo width $c]
1022	set h [winfo height $c]
1023	set lx 10
1024	set ly [expr {$h - 1}]
1025	if {"" == [$c find withtag colorbar]} {
1026	$c create image 10 10 -anchor nw \
1027	-image $_image(legend) -tags colorbar
1028	$c create text $lx $ly -anchor sw \
1029	-fill $itk_option(-plotforeground) -tags "limits vmin"
1030	$c create text [expr {$w-$lx}] $ly -anchor se \
1031	-fill $itk_option(-plotforeground) -tags "limits vmax"
1032	$c lower colorbar
1033	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1034	}
1035
1036	# Display the markers used by the current transfer function.
1037	set tf $_dataset2style($tag)
1038	foreach {vmin vmax} [limits $tf] break
1039	$c itemconfigure vmin -text [format %g $vmin]
1040	$c coords vmin $lx $ly
1041
1042	$c itemconfigure vmax -text [format %g $vmax]
1043	$c coords vmax [expr {$w-$lx}] $ly
1044
1045	if { [info exists _isomarkers($tf)] } {
1046	foreach m $_isomarkers($tf) {
1047	$m visible yes
1048	}
1049	}
1050	}
1051
1052	#
1053	# ReceiveLegend --
1054	#
1055	# The procedure is the response from the render server to each "legend"
1056	# command. The server sends back a "legend" command invoked our
1057	# the slave interpreter. The purpose is to collect data of the image
1058	# representing the legend in the canvas. In addition, the
1059	# active transfer function is displayed.
1060	#
1061	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1062	if { ![isconnected] } {
1063	return
1064	}
1065	#puts stderr "receive legend $tag $vmin $vmax $size"
1066	set bytes [ReceiveBytes $size]
1067	$_image(legend) configure -data $bytes
1068	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1069
1070	DrawLegend $tag
1071	}
1072
1073	#
1074	# ReceiveData --
1075	#
1076	# The procedure is the response from the render server to each "data
1077	# follows" command. The server sends back a "data" command invoked our
1078	# the slave interpreter. The purpose is to collect the min/max of the
1079	# volume sent to the render server. Since the client (flowvisviewer)
1080	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1081	# tell us what the limits are. Once we've received the limits to all
1082	# the data we've sent (tracked by _recvdDatasets) we can then determine
1083	# what the transfer functions are for these # volumes.
1084	#
1085	# Note: There is a considerable tradeoff in having the server report
1086	# back what the data limits are. It means that much of the code
1087	# having to do with transfer-functions has to wait for the data
1088	# to come back, since the isomarkers are calculated based upon
1089	# the data limits. The client code is much messier because of
1090	# this. The alternative is to parse any of the 3D formats on the
1091	# client side.
1092	#
1093	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1094	if { ![isconnected] } {
1095	return
1096	}
1097	# Arguments from server are name value pairs. Stuff them in an array.
1098	array set values $args
1099	set tag $values(tag)
1100	set parts [split $tag -]
1101	set dataobj [lindex $parts 0]
1102	set _serverDatasets($tag) 0
1103	set _limits($tag) [list $values(min) $values(max)]
1104	unset _recvdDatasets($tag)
1105	if { [array size _recvdDatasets] == 0 } {
1106	updateTransferFunctions
1107	}
1108	}
1109
1110	#
1111	# Rebuild --
1112	#
1113	# Called automatically whenever something changes that affects the data
1114	# in the widget. Clears any existing data and rebuilds the widget to
1115	# display new data.
1116	#
1117	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1118	set w [winfo width $itk_component(3dview)]
1119	set h [winfo height $itk_component(3dview)]
1120	if { $w < 2 \|\| $h < 2 } {
1121	update
1122	$_dispatcher event -idle !rebuild
1123	return
1124	}
1125
1126	# Turn on buffering of commands to the server. We don't want to
1127	# be preempted by a server disconnect/reconnect (which automatically
1128	# generates a new call to Rebuild).
1129	StartBufferingCommands
1130
1131	# Hide all the isomarkers. Can't remove them. Have to remember the
1132	# settings since the user may have created/deleted/moved markers.
1133
1134	foreach tf [array names _isomarkers] {
1135	foreach m $_isomarkers($tf) {
1136	$m visible no
1137	}
1138	}
1139
1140	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1141	set _width $w
1142	set _height $h
1143	$_arcball resize $w $h
1144	Resize
1145	}
1146
1147	set _first ""
1148	foreach dataobj [get] {
1149	foreach comp [$dataobj components] {
1150	set tag $dataobj-$comp
1151	set isvtk 0
1152	# FIXME: Would like to use the type method of the dataobj
1153	# but the returned value isn't well defined now
1154	if {[catch {
1155	# Send the data as one huge base64-encoded mess -- yuck!
1156	set data [$dataobj blob $comp]
1157	}]} {
1158	set data [$dataobj vtkdata $comp]
1159	set isvtk 1
1160	}
1161	set nbytes [string length $data]
1162	if { $_reportClientInfo } {
1163	set info {}
1164	lappend info "tool_id" [$dataobj hints toolid]
1165	lappend info "tool_name" [$dataobj hints toolname]
1166	lappend info "tool_title" [$dataobj hints tooltitle]
1167	lappend info "tool_command" [$dataobj hints toolcommand]
1168	lappend info "tool_revision" [$dataobj hints toolrevision]
1169	lappend info "dataset_label" [$dataobj hints label]
1170	lappend info "dataset_size" $nbytes
1171	lappend info "dataset_tag" $tag
1172	SendCmd "clientinfo [list $info]"
1173	}
1174	set extents [$dataobj extents $comp]
1175	# I have a field. Is a vector field or a volume field?
1176	if { !$isvtk && $extents == 1 } {
1177	SendCmd "volume data follows $nbytes $tag"
1178	} else {
1179	if {[SendFlowCmd $dataobj $comp $nbytes $extents] < 0} {
1180	continue
1181	}
1182	}
1183	SendData $data
1184	NameTransferFunction $dataobj $comp
1185	set _recvdDatasets($tag) 1
1186	}
1187	}
1188
1189	set _first [lindex [get] 0]
1190
1191	foreach axis {x y z} {
1192	# Turn off cutplanes for all volumes
1193	SendCmd "cutplane state 0 $axis"
1194	}
1195
1196	# Reset the camera and other view parameters
1197	InitSettings light2side ambient diffuse specularLevel specularExponent \
1198	opacity isosurface grid axes volume outline \
1199	cutplaneVisible xcutplane ycutplane zcutplane
1200
1201	# nothing to send -- activate the proper volume
1202	if {"" != $_first} {
1203	set axis [$_first hints updir]
1204	if {"" != $axis} {
1205	SendCmd "up $axis"
1206	}
1207	set location [$_first hints camera]
1208	if { $location != "" } {
1209	array set _view $location
1210	}
1211
1212	}
1213	set _settings(-qw) $_view(-qw)
1214	set _settings(-qx) $_view(-qx)
1215	set _settings(-qy) $_view(-qy)
1216	set _settings(-qz) $_view(-qz)
1217	set _settings(-xpan) $_view(-xpan)
1218	set _settings(-ypan) $_view(-ypan)
1219	set _settings(-zoom) $_view(-zoom)
1220
1221	set q [ViewToQuaternion]
1222	$_arcball quaternion $q
1223	SendCmd "camera orient $q"
1224	SendCmd "camera reset"
1225	PanCamera
1226	SendCmd "camera zoom $_view(-zoom)"
1227
1228	foreach dataobj [get] {
1229	foreach comp [$dataobj components] {
1230	NameTransferFunction $dataobj $comp
1231	}
1232	}
1233
1234	# nothing to send -- activate the proper ivol
1235	set _first [lindex [get] 0]
1236	if {"" != $_first} {
1237	set axis [$_first hints updir]
1238	if {"" != $axis} {
1239	SendCmd "up $axis"
1240	}
1241	set location [$_first hints camera]
1242	if { $location != "" } {
1243	array set _view $location
1244	}
1245	set comp [lindex [$_first components] 0]
1246	set _activeTf [lindex $_dataset2style($_first-$comp) 0]
1247	}
1248
1249
1250	# sync the state of slicers
1251	set vols [CurrentVolumeIds -cutplanes]
1252	foreach axis {x y z} {
1253	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1254	SendCmd "cutplane position $pos $axis $vols"
1255	}
1256	SendCmd "volume data state $_settings($this-volume)"
1257	EventuallyResizeLegend
1258
1259	# Actually write the commands to the server socket. If it fails, we don't
1260	# care. We're finished here.
1261	blt::busy hold $itk_component(hull)
1262	StopBufferingCommands
1263	blt::busy release $itk_component(hull)
1264	set _reset 0
1265	}
1266
1267	# ----------------------------------------------------------------------
1268	# USAGE: CurrentVolumeIds ?-cutplanes?
1269	#
1270	# Returns a list of volume server IDs for the current volume being
1271	# displayed. This is normally a single ID, but it might be a list
1272	# of IDs if the current data object has multiple components.
1273	# ----------------------------------------------------------------------
1274	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1275	return ""
1276	if { $_first == "" } {
1277	return
1278	}
1279	foreach key [array names _serverDatasets -] {
1280	if {[string match $_first-* $key]} {
1281	array set style {
1282	-cutplanes 1
1283	}
1284	foreach {dataobj comp} [split $key -] break
1285	array set style [lindex [$dataobj components -style $comp] 0]
1286	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1287	lappend rlist $_serverDatasets($key)
1288	}
1289	}
1290	}
1291	return $rlist
1292	}
1293
1294	# ----------------------------------------------------------------------
1295	# USAGE: Zoom in
1296	# USAGE: Zoom out
1297	# USAGE: Zoom reset
1298	#
1299	# Called automatically when the user clicks on one of the zoom
1300	# controls for this widget. Changes the zoom for the current view.
1301	# ----------------------------------------------------------------------
1302	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1303	switch -- $option {
1304	"in" {
1305	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1306	set _settings(-zoom) $_view(-zoom)
1307	SendCmd "camera zoom $_view(-zoom)"
1308	}
1309	"out" {
1310	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1311	set _settings(-zoom) $_view(-zoom)
1312	SendCmd "camera zoom $_view(-zoom)"
1313	}
1314	"reset" {
1315	array set _view {
1316	-qw 0.853553
1317	-qx -0.353553
1318	-qy 0.353553
1319	-qz 0.146447
1320	-xpan 0
1321	-ypan 0
1322	-zoom 1.0
1323	}
1324	if { $_first != "" } {
1325	set location [$_first hints camera]
1326	if { $location != "" } {
1327	array set _view $location
1328	}
1329	}
1330	set q [ViewToQuaternion]
1331	$_arcball quaternion $q
1332	SendCmd "camera orient $q"
1333	SendCmd "camera reset"
1334	set _settings(-qw) $_view(-qw)
1335	set _settings(-qx) $_view(-qx)
1336	set _settings(-qy) $_view(-qy)
1337	set _settings(-qz) $_view(-qz)
1338	set _settings(-xpan) $_view(-xpan)
1339	set _settings(-ypan) $_view(-ypan)
1340	set _settings(-zoom) $_view(-zoom)
1341	}
1342	}
1343	}
1344
1345	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1346	set x $_view(-xpan)
1347	set y $_view(-ypan)
1348	SendCmd "camera pan $x $y"
1349	}
1350
1351	# ----------------------------------------------------------------------
1352	# USAGE: Rotate click <x> <y>
1353	# USAGE: Rotate drag <x> <y>
1354	# USAGE: Rotate release <x> <y>
1355	#
1356	# Called automatically when the user clicks/drags/releases in the
1357	# plot area. Moves the plot according to the user's actions.
1358	# ----------------------------------------------------------------------
1359	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1360	switch -- $option {
1361	click {
1362	$itk_component(3dview) configure -cursor fleur
1363	set _click(x) $x
1364	set _click(y) $y
1365	}
1366	drag {
1367	if {[array size _click] == 0} {
1368	Rotate click $x $y
1369	} else {
1370	set w [winfo width $itk_component(3dview)]
1371	set h [winfo height $itk_component(3dview)]
1372	if {$w <= 0 \|\| $h <= 0} {
1373	return
1374	}
1375
1376	if {[catch {
1377	# this fails sometimes for no apparent reason
1378	set dx [expr {double($x-$_click(x))/$w}]
1379	set dy [expr {double($y-$_click(y))/$h}]
1380	}]} {
1381	return
1382	}
1383
1384	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1385	QuaternionToView $q
1386	set _settings(-qw) $_view(-qw)
1387	set _settings(-qx) $_view(-qx)
1388	set _settings(-qy) $_view(-qy)
1389	set _settings(-qz) $_view(-qz)
1390	SendCmd "camera orient $q"
1391
1392	set _click(x) $x
1393	set _click(y) $y
1394	}
1395	}
1396	release {
1397	Rotate drag $x $y
1398	$itk_component(3dview) configure -cursor ""
1399	catch {unset _click}
1400	}
1401	default {
1402	error "bad option \"$option\": should be click, drag, release"
1403	}
1404	}
1405	}
1406
1407	# ----------------------------------------------------------------------
1408	# USAGE: $this Pan click x y
1409	# $this Pan drag x y
1410	# $this Pan release x y
1411	#
1412	# Called automatically when the user clicks on one of the zoom
1413	# controls for this widget. Changes the zoom for the current view.
1414	# ----------------------------------------------------------------------
1415	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1416	# Experimental stuff
1417	set w [winfo width $itk_component(3dview)]
1418	set h [winfo height $itk_component(3dview)]
1419	if { $option == "set" } {
1420	set x [expr $x / double($w)]
1421	set y [expr $y / double($h)]
1422	set _view(-xpan) [expr $_view(-xpan) + $x]
1423	set _view(-ypan) [expr $_view(-ypan) + $y]
1424	PanCamera
1425	set _settings(-xpan) $_view(-xpan)
1426	set _settings(-ypan) $_view(-ypan)
1427	return
1428	}
1429	if { $option == "click" } {
1430	set _click(x) $x
1431	set _click(y) $y
1432	$itk_component(3dview) configure -cursor hand1
1433	}
1434	if { $option == "drag" \|\| $option == "release" } {
1435	set dx [expr ($_click(x) - $x)/double($w)]
1436	set dy [expr ($_click(y) - $y)/double($h)]
1437	set _click(x) $x
1438	set _click(y) $y
1439	set _view(-xpan) [expr $_view(-xpan) - $dx]
1440	set _view(-ypan) [expr $_view(-ypan) - $dy]
1441	PanCamera
1442	set _settings(-xpan) $_view(-xpan)
1443	set _settings(-ypan) $_view(-ypan)
1444	}
1445	if { $option == "release" } {
1446	$itk_component(3dview) configure -cursor ""
1447	}
1448	}
1449
1450
1451	# ----------------------------------------------------------------------
1452	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1453	#
1454	# Called when the user clicks on the record, stop or play buttons
1455	# for flow visualization.
1456	# ----------------------------------------------------------------------
1457	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1458	switch -- $option {
1459	movie {
1460	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1461	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1462	}
1463	set action [lindex $args 0]
1464	set op [lindex $args 1]
1465	if {$op == ""} { set op "on" }
1466
1467	set current [State $action]
1468	if {$op == "toggle"} {
1469	if {$current == "on"} {
1470	set op "off"
1471	} else {
1472	set op "on"
1473	}
1474	}
1475	set cmds ""
1476	switch -- $action {
1477	record {
1478	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1479	$itk_component(rewind) configure -relief sunken
1480	$itk_component(stop) configure -relief raised
1481	$itk_component(play) configure -relief raised
1482	set inner $itk_component(settingsFrame)
1483	set frames [$inner.framecnt value]
1484	set _settings(nsteps) $frames
1485	set cmds "flow capture $frames"
1486	SendCmd $cmds
1487	}
1488	}
1489	stop {
1490	if { [$itk_component(stop) cget -relief] != "sunken" } {
1491	$itk_component(rewind) configure -relief raised
1492	$itk_component(stop) configure -relief sunken
1493	$itk_component(play) configure -relief raised
1494	_pause
1495	set cmds "flow reset"
1496	SendCmd $cmds
1497	}
1498	}
1499	play {
1500	if { [$itk_component(play) cget -relief] != "sunken" } {
1501	$itk_component(rewind) configure -relief raised
1502	$itk_component(stop) configure -relief raised
1503	$itk_component(play) configure \
1504	-image [Rappture::icon flow-pause] \
1505	-relief sunken
1506	bind $itk_component(play) <ButtonPress> \
1507	[itcl::code $this _pause]
1508	flow next
1509	}
1510	}
1511	default {
1512	error "bad option \"$option\": should be one of record\|stop\|play"
1513	}
1514
1515	}
1516	}
1517	default {
1518	error "bad option \"$option\": should be movie"
1519	}
1520	}
1521	}
1522
1523	# ----------------------------------------------------------------------
1524	# USAGE: Play
1525	#
1526	# ----------------------------------------------------------------------
1527	itcl::body Rappture::FlowvisViewer::Play {} {
1528	SendCmd "flow next"
1529	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1530	$_dispatcher event -after $delay !play
1531	}
1532
1533	# ----------------------------------------------------------------------
1534	# USAGE: Pause
1535	#
1536	# Invoked when the user hits the "pause" button to stop playing the
1537	# current sequence of frames as a movie.
1538	# ----------------------------------------------------------------------
1539	itcl::body Rappture::FlowvisViewer::Pause {} {
1540	$_dispatcher cancel !play
1541
1542	# Toggle the button to "play" mode
1543	$itk_component(play) configure \
1544	-image [Rappture::icon flow-start] \
1545	-relief raised
1546	bind $itk_component(play) <ButtonPress> \
1547	[itcl::code $this Flow movie play toggle]
1548	}
1549
1550	# ----------------------------------------------------------------------
1551	# USAGE: InitSettings <what> ?<value>?
1552	#
1553	# Used internally to update rendering settings whenever parameters
1554	# change in the popup settings panel. Sends the new settings off
1555	# to the back end.
1556	# ----------------------------------------------------------------------
1557	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1558	foreach arg $args {
1559	AdjustSetting $arg
1560	}
1561	}
1562
1563	# ----------------------------------------------------------------------
1564	# USAGE: AdjustSetting <what> ?<value>?
1565	#
1566	# Used internally to update rendering settings whenever parameters
1567	# change in the popup settings panel. Sends the new settings off
1568	# to the back end.
1569	# ----------------------------------------------------------------------
1570	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1571	switch -- $what {
1572	colormap {
1573	set color [$itk_component(colormap) value]
1574	set _settings(colormap) $color
1575	#ResetColormap $color
1576	}
1577	ambient {
1578	if { $_first != "" } {
1579	set comp [lindex [$_first components] 0]
1580	set tag $_first-$comp
1581	set val $_settings($this-ambient)
1582	set val [expr {0.01*$val}]
1583	SendCmd "$tag configure -ambient $val"
1584	}
1585	}
1586	diffuse {
1587	if { $_first != "" } {
1588	set comp [lindex [$_first components] 0]
1589	set tag $_first-$comp
1590	set val $_settings($this-diffuse)
1591	set val [expr {0.01*$val}]
1592	SendCmd "$tag configure -diffuse $val"
1593	}
1594	}
1595	specularLevel {
1596	if { $_first != "" } {
1597	set comp [lindex [$_first components] 0]
1598	set tag $_first-$comp
1599	set val $_settings($this-specularLevel)
1600	set val [expr {0.01*$val}]
1601	SendCmd "$tag configure -specularLevel $val"
1602	}
1603	}
1604	specularExponent {
1605	if { $_first != "" } {
1606	set comp [lindex [$_first components] 0]
1607	set tag $_first-$comp
1608	set val $_settings($this-specularExponent)
1609	SendCmd "$tag configure -specularExp $val"
1610	}
1611	}
1612	light2side {
1613	if { $_first != "" } {
1614	set comp [lindex [$_first components] 0]
1615	set tag $_first-$comp
1616	set val $_settings($this-light2side)
1617	SendCmd "$tag configure -light2side $val"
1618	}
1619	}
1620	opacity {
1621	if { $_first != "" } {
1622	set comp [lindex [$_first components] 0]
1623	set tag $_first-$comp
1624	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1625	SendCmd "$tag configure -opacity $opacity"
1626	}
1627	}
1628	thickness {
1629	if { $_first != "" && $_activeTf != "" } {
1630	set val $_settings($this-thickness)
1631	# Scale values between 0.00001 and 0.01000
1632	set sval [expr {0.0001*double($val)}]
1633	set tf $_activeTf
1634	set _settings($this-$tf-thickness) $sval
1635	updateTransferFunctions
1636	}
1637	}
1638	"outline" {
1639	if { $_first != "" } {
1640	set comp [lindex [$_first components] 0]
1641	set tag $_first-$comp
1642	SendCmd "$tag configure -outline $_settings($this-outline)"
1643	}
1644	}
1645	"isosurface" {
1646	if { [isconnected] } {
1647	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1648	}
1649	}
1650	"grid" {
1651	if { [isconnected] } {
1652	SendCmd "grid visible $_settings($this-grid)"
1653	}
1654	}
1655	"axes" {
1656	if { [isconnected] } {
1657	SendCmd "axis visible $_settings($this-axes)"
1658	}
1659	}
1660	"legend" {
1661	if { $_settings($this-legend) } {
1662	blt::table $itk_component(plotarea) \
1663	0,0 $itk_component(3dview) -fill both \
1664	1,0 $itk_component(legend) -fill x
1665	blt::table configure $itk_component(plotarea) r1 -resize none
1666	} else {
1667	blt::table forget $itk_component(legend)
1668	}
1669	}
1670	"volume" {
1671	if { $_first != "" } {
1672	set comp [lindex [$_first components] 0]
1673	set tag $_first-$comp
1674	SendCmd "$tag configure -volume $_settings($this-volume)"
1675	}
1676	}
1677	"cutplaneVisible" {
1678	set bool $_settings($this-$what)
1679	set datasets [CurrentVolumeIds -cutplanes]
1680	set tag [lindex $datasets 0]
1681	SendCmd "cutplane visible $bool $tag"
1682	}
1683	"xcutplane" - "ycutplane" - "zcutplane" {
1684	set axis [string range $what 0 0]
1685	set bool $_settings($this-$what)
1686	if { [isconnected] } {
1687	set vols [CurrentVolumeIds -cutplanes]
1688	SendCmd "cutplane state $bool $axis $vols"
1689	}
1690	if { $bool } {
1691	$itk_component(${axis}CutScale) configure -state normal \
1692	-troughcolor white
1693	} else {
1694	$itk_component(${axis}CutScale) configure -state disabled \
1695	-troughcolor grey82
1696	}
1697	}
1698	default {
1699	error "don't know how to fix $what"
1700	}
1701	}
1702	}
1703
1704	# ----------------------------------------------------------------------
1705	# USAGE: ResizeLegend
1706	#
1707	# Used internally to update the legend area whenever it changes size
1708	# or when the field changes. Asks the server to send a new legend
1709	# for the current field.
1710	# ----------------------------------------------------------------------
1711	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1712	set _resizeLegendPending 0
1713	set lineht [font metrics $itk_option(-font) -linespace]
1714	set w [expr {$_width-20}]
1715	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1716
1717	if { $_first == "" } {
1718	return
1719	}
1720	set comp [lindex [$_first components] 0]
1721	set tag $_first-$comp
1722	#set _activeTf [lindex $_dataset2style($tag) 0]
1723	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1724	#SendCmd "legend $_activeTf $w $h"
1725	SendCmd "$tag legend $w $h"
1726	} else {
1727	# Can't do this as this will remove the items associated with the
1728	# isomarkers.
1729
1730	#$itk_component(legend) delete all
1731	}
1732	}
1733
1734	#
1735	# NameTransferFunction --
1736	#
1737	# Creates a transfer function name based on the <style> settings in the
1738	# library run.xml file. This placeholder will be used later to create
1739	# and send the actual transfer function once the data info has been sent
1740	# to us by the render server. [We won't know the volume limits until the
1741	# server parses the 3D data and sends back the limits via ReceiveData.]
1742	#
1743	# FIXME: The current way we generate transfer-function names completely
1744	# ignores the -markers option. The problem is that we are forced
1745	# to compute the name from an increasing complex set of values:
1746	# color, levels, marker, opacity. I think we're stuck doing it
1747	# now.
1748	#
1749	itcl::body Rappture::FlowvisViewer::NameTransferFunction { dataobj cname } {
1750	array set style {
1751	-color BCGYR
1752	-levels 6
1753	-opacity 0.5
1754	}
1755	array set style [lindex [$dataobj components -style $cname] 0]
1756	set _settings($this-opacity) [expr $style(-opacity) * 100]
1757	set _dataset2style($dataobj-$cname) $cname
1758	lappend _style2datasets($cname) $dataobj $cname
1759	return $cname
1760	}
1761
1762	#
1763	# ComputeTransferFunction --
1764	#
1765	# Computes and sends the transfer function to the render server. It's
1766	# assumed that the volume data limits are known and that the global
1767	# transfer-functions slider values have be setup. Both parts are
1768	# needed to compute the relative value (location) of the marker, and
1769	# the alpha map of the transfer function.
1770	#
1771	itcl::body Rappture::FlowvisViewer::ComputeTransferFunction { tf } {
1772	array set style {
1773	-color BCGYR
1774	-levels 6
1775	-opacity 0.5
1776	}
1777	set dataobj ""; set comp ""
1778	foreach {dataobj comp} $_style2datasets($tf) break
1779	if { $dataobj == "" } {
1780	return 0
1781	}
1782	array set style [lindex [$dataobj components -style $comp] 0]
1783
1784	# We have to parse the style attributes for a volume using this
1785	# transfer-function once. This sets up the initial isomarkers for the
1786	# transfer function. The user may add/delete markers, so we have to
1787	# maintain a list of markers for each transfer-function. We use the one
1788	# of the volumes (the first in the list) using the transfer-function as a
1789	# reference.
1790	#
1791	# FIXME: The current way we generate transfer-function names completely
1792	# ignores the -markers option. The problem is that we are forced
1793	# to compute the name from an increasing complex set of values:
1794	# color, levels, marker, opacity. I think the cow's out of the
1795	# barn on this one.
1796
1797	if { ![info exists _isomarkers($tf)] } {
1798	# Have to defer creation of isomarkers until we have data limits
1799	if { [info exists style(-markers)] &&
1800	[llength $style(-markers)] > 0 } {
1801	ParseMarkersOption $tf $style(-markers)
1802	} else {
1803	ParseLevelsOption $tf $style(-levels)
1804	}
1805	}
1806	if { [info exists style(-nonuniformcolors)] } {
1807	foreach { value color } $style(-nonuniformcolors) {
1808	append cmap "$value [Color2RGB $color] "
1809	}
1810	} else {
1811	set cmap [ColorsToColormap $style(-color)]
1812	}
1813
1814	if { ![info exists _settings($this-opacity)] } {
1815	set _settings($this-opacity) [expr $style(-opacity) * 100]
1816	}
1817
1818	# Transfer function should be normalized with [0,1] range
1819	# The volume shading opacity setting is used to scale opacity
1820	# in the volume shader.
1821	set max 1.0
1822
1823	set isovalues {}
1824	foreach m $_isomarkers($tf) {
1825	lappend isovalues [$m relval]
1826	}
1827	# Sort the isovalues
1828	set isovalues [lsort -real $isovalues]
1829
1830	set tag $this-$tf
1831	if { ![info exists _settings($tag-thickness)]} {
1832	set _settings($tag-thickness) 0.005
1833	}
1834	set delta $_settings($tag-thickness)
1835
1836	set first [lindex $isovalues 0]
1837	set last [lindex $isovalues end]
1838	set amap ""
1839	if { $first == "" \|\| $first != 0.0 } {
1840	lappend amap 0.0 0.0
1841	}
1842	foreach x $isovalues {
1843	set x1 [expr {$x-$delta-0.00001}]
1844	set x2 [expr {$x-$delta}]
1845	set x3 [expr {$x+$delta}]
1846	set x4 [expr {$x+$delta+0.00001}]
1847	if { $x1 < 0.0 } {
1848	set x1 0.0
1849	} elseif { $x1 > 1.0 } {
1850	set x1 1.0
1851	}
1852	if { $x2 < 0.0 } {
1853	set x2 0.0
1854	} elseif { $x2 > 1.0 } {
1855	set x2 1.0
1856	}
1857	if { $x3 < 0.0 } {
1858	set x3 0.0
1859	} elseif { $x3 > 1.0 } {
1860	set x3 1.0
1861	}
1862	if { $x4 < 0.0 } {
1863	set x4 0.0
1864	} elseif { $x4 > 1.0 } {
1865	set x4 1.0
1866	}
1867	# add spikes in the middle
1868	lappend amap $x1 0.0
1869	lappend amap $x2 $max
1870	lappend amap $x3 $max
1871	lappend amap $x4 0.0
1872	}
1873	if { $last == "" \|\| $last != 1.0 } {
1874	lappend amap 1.0 0.0
1875	}
1876	SendCmd "transfunc define $tf { $cmap } { $amap }"
1877	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1878	}
1879
1880	# ----------------------------------------------------------------------
1881	# CONFIGURATION OPTION: -plotbackground
1882	# ----------------------------------------------------------------------
1883	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1884	if { [isconnected] } {
1885	set color $itk_option(-plotbackground)
1886	set rgb [Color2RGB $color]
1887	SendCmd "screen bgcolor $rgb"
1888	$itk_component(legend) configure -background $color
1889	}
1890	}
1891
1892	# ----------------------------------------------------------------------
1893	# CONFIGURATION OPTION: -plotforeground
1894	# ----------------------------------------------------------------------
1895	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1896	if { [isconnected] } {
1897	set color $itk_option(-plotforeground)
1898	set rgb [Color2RGB $color]
1899	SendCmd "volume outline color $rgb"
1900	SendCmd "grid axiscolor $rgb"
1901	SendCmd "grid linecolor $rgb"
1902	$itk_component(legend) itemconfigure labels -fill $color
1903	$itk_component(legend) itemconfigure limits -fill $color
1904	}
1905	}
1906
1907	# ----------------------------------------------------------------------
1908	# CONFIGURATION OPTION: -plotoutline
1909	# ----------------------------------------------------------------------
1910	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1911	# Must check if we are connected because this routine is called from the
1912	# class body when the -plotoutline itk_option is defined. At that point
1913	# the FlowvisViewer class constructor hasn't been called, so we can't
1914	# start sending commands to visualization server.
1915	if { [isconnected] } {
1916	if {"" == $itk_option(-plotoutline)} {
1917	SendCmd "volume outline state off"
1918	} else {
1919	SendCmd "volume outline state on"
1920	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1921	}
1922	}
1923	}
1924
1925	#
1926	# The -levels option takes a single value that represents the number
1927	# of evenly distributed markers based on the current data range. Each
1928	# marker is a relative value from 0.0 to 1.0.
1929	#
1930	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1931	set c $itk_component(legend)
1932	regsub -all "," $levels " " levels
1933	if {[string is int $levels]} {
1934	for {set i 1} { $i <= $levels } {incr i} {
1935	set x [expr {double($i)/($levels+1)}]
1936	set m [Rappture::IsoMarker \#auto $c $this $tf]
1937	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1938	$m relval $x
1939	lappend _isomarkers($tf) $m
1940	}
1941	} else {
1942	foreach x $levels {
1943	set m [Rappture::IsoMarker \#auto $c $this $tf]
1944	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1945	$m relval $x
1946	lappend _isomarkers($tf) $m
1947	}
1948	}
1949	}
1950
1951	#
1952	# The -markers option takes a list of zero or more values (the values
1953	# may be separated either by spaces or commas) that have the following
1954	# format:
1955	#
1956	# N% Percent of current total data range. Converted to
1957	# to a relative value between 0.0 and 1.0.
1958	# N Absolute value of marker. If the marker is outside of
1959	# the current range, it will be displayed on the outer
1960	# edge of the legends, but it range it represents will
1961	# not be seen.
1962	#
1963	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1964	set c $itk_component(legend)
1965	regsub -all "," $markers " " markers
1966	foreach marker $markers {
1967	set n [scan $marker "%g%s" value suffix]
1968	if { $n == 2 && $suffix == "%" } {
1969	# ${n}% : Set relative value.
1970	set value [expr {$value * 0.01}]
1971	set m [Rappture::IsoMarker \#auto $c $this $tf]
1972	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1973	$m relval $value
1974	lappend _isomarkers($tf) $m
1975	} else {
1976	# ${n} : Set absolute value.
1977	set m [Rappture::IsoMarker \#auto $c $this $tf]
1978	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1979	$m absval $value
1980	lappend _isomarkers($tf) $m
1981	}
1982	}
1983	}
1984
1985	# ----------------------------------------------------------------------
1986	# USAGE: UpdateTransferFunctions
1987	# ----------------------------------------------------------------------
1988	itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
1989	$_dispatcher event -after 100 !send_transfunc
1990	}
1991
1992	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
1993	if { $_activeTf == "" } {
1994	error "active transfer function isn't set"
1995	}
1996	set tf $_activeTf
1997	set c $itk_component(legend)
1998	set m [Rappture::IsoMarker \#auto $c $this $tf]
1999	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
2000	set w [winfo width $c]
2001	$m relval [expr {double($x-10)/($w-20)}]
2002	lappend _isomarkers($tf) $m
2003	updateTransferFunctions
2004	return 1
2005	}
2006
2007	itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
2008	set tf [$marker transferfunc]
2009	set bool 0
2010	if { [info exists _isomarkers($tf)] } {
2011	set list {}
2012	set marker [namespace tail $marker]
2013	foreach m $_isomarkers($tf) {
2014	set sx [$m screenpos]
2015	if { $m != $marker } {
2016	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2017	$marker relval [$m relval]
2018	itcl::delete object $m
2019	bell
2020	set bool 1
2021	continue
2022	}
2023	}
2024	lappend list $m
2025	}
2026	set _isomarkers($tf) $list
2027	updateTransferFunctions
2028	}
2029	return $bool
2030	}
2031
2032	itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
2033	set tf [$marker transferfunc]
2034	if { [info exists _isomarkers($tf)] } {
2035	set marker [namespace tail $marker]
2036	foreach m $_isomarkers($tf) {
2037	set sx [$m screenpos]
2038	if { $m != $marker } {
2039	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2040	$m activate $bool
2041	}
2042	}
2043	}
2044	return ""
2045	}
2046
2047	itcl::body Rappture::FlowvisViewer::limits { cname } {
2048	set _limits(v) [list 0.0 1.0]
2049	if { ![info exists _style2datasets($cname)] } {
2050	puts stderr "no _style2datasets for cname=($cname)"
2051	return [array get _limits]
2052	}
2053	set min ""; set max ""
2054	foreach tag [GetDatasetsWithComponent $cname] {
2055	if { ![info exists _serverDatasets($tag)] } {
2056	puts stderr "$tag not in _serverDatasets?"
2057	continue
2058	}
2059	if { ![info exists _limits($tag)] } {
2060	puts stderr "$tag no min?"
2061	continue
2062	}
2063	foreach {vmin vmax} $_limits($tag) break
2064	if { $min == "" \|\| $min > $vmin } {
2065	set min $vmin
2066	}
2067	if { $max == "" \|\| $max < $vmax } {
2068	set max $vmax
2069	}
2070	}
2071	if { $min != "" && $max != "" } {
2072	set _limits(v) [list $min $max]
2073	set _limits($cname) [list $min $max]
2074	}
2075	return $_limits($cname)
2076	}
2077
2078	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2079	foreach { key value } {
2080	grid 0
2081	axes 0
2082	outline 1
2083	volume 1
2084	legend 1
2085	particles 1
2086	lic 1
2087	} {
2088	set _settings($this-$key) $value
2089	}
2090
2091	set fg [option get $itk_component(hull) font Font]
2092	#set bfg [option get $itk_component(hull) boldFont Font]
2093
2094	set inner [$itk_component(main) insert end \
2095	-title "View Settings" \
2096	-icon [Rappture::icon wrench]]
2097	$inner configure -borderwidth 4
2098
2099	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2100	checkbutton $inner.isosurface \
2101	-text "Isosurface shading" \
2102	-variable [itcl::scope _settings($this-isosurface)] \
2103	-command [itcl::code $this AdjustSetting isosurface] \
2104	-font "Arial 9"
2105
2106	checkbutton $inner.axes \
2107	-text "Axes" \
2108	-variable [itcl::scope _settings($this-axes)] \
2109	-command [itcl::code $this AdjustSetting axes] \
2110	-font "Arial 9"
2111
2112	checkbutton $inner.grid \
2113	-text "Grid" \
2114	-variable [itcl::scope _settings($this-grid)] \
2115	-command [itcl::code $this AdjustSetting grid] \
2116	-font "Arial 9"
2117
2118	checkbutton $inner.outline \
2119	-text "Outline" \
2120	-variable [itcl::scope _settings($this-outline)] \
2121	-command [itcl::code $this AdjustSetting outline] \
2122	-font "Arial 9"
2123
2124	checkbutton $inner.legend \
2125	-text "Legend" \
2126	-variable [itcl::scope _settings($this-legend)] \
2127	-command [itcl::code $this AdjustSetting legend] \
2128	-font "Arial 9"
2129
2130	checkbutton $inner.volume \
2131	-text "Volume" \
2132	-variable [itcl::scope _settings($this-volume)] \
2133	-command [itcl::code $this AdjustSetting volume] \
2134	-font "Arial 9"
2135
2136	checkbutton $inner.particles \
2137	-text "Particles" \
2138	-variable [itcl::scope _settings($this-particles)] \
2139	-command [itcl::code $this AdjustSetting particles] \
2140	-font "Arial 9"
2141
2142	checkbutton $inner.lic \
2143	-text "Lic" \
2144	-variable [itcl::scope _settings($this-lic)] \
2145	-command [itcl::code $this AdjustSetting lic] \
2146	-font "Arial 9"
2147
2148	frame $inner.frame
2149
2150	blt::table $inner \
2151	0,0 $inner.axes -cspan 2 -anchor w \
2152	1,0 $inner.grid -cspan 2 -anchor w \
2153	2,0 $inner.outline -cspan 2 -anchor w \
2154	3,0 $inner.volume -cspan 2 -anchor w \
2155	4,0 $inner.legend -cspan 2 -anchor w
2156
2157	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2158
2159	blt::table configure $inner r* -resize none
2160	blt::table configure $inner r5 -resize expand
2161	}
2162
2163	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2164	set inner [$itk_component(main) insert end \
2165	-title "Volume Settings" \
2166	-icon [Rappture::icon volume-on]]
2167	$inner configure -borderwidth 4
2168
2169	set fg [option get $itk_component(hull) font Font]
2170	#set bfg [option get $itk_component(hull) boldFont Font]
2171
2172	checkbutton $inner.vol -text "Show volume" -font $fg \
2173	-text "Volume" \
2174	-variable [itcl::scope _settings($this-volume)] \
2175	-command [itcl::code $this AdjustSetting volume] \
2176	-font "Arial 9"
2177
2178	label $inner.shading -text "Shading:" -font $fg
2179
2180	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2181	-variable [itcl::scope _settings($this-light2side)] \
2182	-command [itcl::code $this AdjustSetting light2side]
2183
2184	label $inner.ambient_l -text "Ambient" -font $fg
2185	::scale $inner.ambient -from 0 -to 100 -orient horizontal \
2186	-variable [itcl::scope _settings($this-ambient)] \
2187	-width 10 \
2188	-showvalue off -command [itcl::code $this AdjustSetting ambient]
2189
2190	label $inner.diffuse_l -text "Diffuse" -font $fg
2191	::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
2192	-variable [itcl::scope _settings($this-diffuse)] \
2193	-width 10 \
2194	-showvalue off -command [itcl::code $this AdjustSetting diffuse]
2195
2196	label $inner.specularLevel_l -text "Specular" -font $fg
2197	::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
2198	-variable [itcl::scope _settings($this-specularLevel)] \
2199	-width 10 \
2200	-showvalue off -command [itcl::code $this AdjustSetting specularLevel]
2201
2202	label $inner.specularExponent_l -text "Shininess" -font $fg
2203	::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
2204	-variable [itcl::scope _settings($this-specularExponent)] \
2205	-width 10 \
2206	-showvalue off -command [itcl::code $this AdjustSetting specularExponent]
2207
2208	label $inner.clear -text "Clear" -font $fg
2209	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2210	-variable [itcl::scope _settings($this-opacity)] \
2211	-width 10 \
2212	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2213	label $inner.opaque -text "Opaque" -font $fg
2214
2215	label $inner.thin -text "Thin" -font $fg
2216	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2217	-variable [itcl::scope _settings($this-thickness)] \
2218	-width 10 \
2219	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2220	label $inner.thick -text "Thick" -font $fg
2221
2222	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2223	itk_component add colormap {
2224	Rappture::Combobox $inner.colormap -width 10 -editable no
2225	}
2226	$inner.colormap choices insert end [GetColormapList -includeNone]
2227	$itk_component(colormap) value "BCGYR"
2228	bind $inner.colormap <<Value>> \
2229	[itcl::code $this AdjustSetting colormap]
2230
2231	blt::table $inner \
2232	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2233	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2234	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2235	3,0 $inner.ambient_l -anchor e -pady 2 \
2236	3,1 $inner.ambient -cspan 3 -pady 2 -fill x \
2237	4,0 $inner.diffuse_l -anchor e -pady 2 \
2238	4,1 $inner.diffuse -cspan 3 -pady 2 -fill x \
2239	5,0 $inner.specularLevel_l -anchor e -pady 2 \
2240	5,1 $inner.specularLevel -cspan 3 -pady 2 -fill x \
2241	6,0 $inner.specularExponent_l -anchor e -pady 2 \
2242	6,1 $inner.specularExponent -cspan 3 -pady 2 -fill x \
2243	7,0 $inner.clear -anchor e -pady 2 \
2244	7,1 $inner.opacity -cspan 2 -pady 2 -fill x \
2245	7,3 $inner.opaque -anchor w -pady 2 \
2246	8,0 $inner.thin -anchor e -pady 2 \
2247	8,1 $inner.thickness -cspan 2 -pady 2 -fill x \
2248	8,3 $inner.thick -anchor w -pady 2
2249
2250	blt::table configure $inner c0 c1 c3 r* -resize none
2251	blt::table configure $inner r9 -resize expand
2252	}
2253
2254	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2255	set inner [$itk_component(main) insert end \
2256	-title "Cutplane Settings" \
2257	-icon [Rappture::icon cutbutton]]
2258	$inner configure -borderwidth 4
2259
2260	# X-value slicer...
2261	itk_component add xCutButton {
2262	Rappture::PushButton $inner.xbutton \
2263	-onimage [Rappture::icon x-cutplane] \
2264	-offimage [Rappture::icon x-cutplane] \
2265	-command [itcl::code $this AdjustSetting xcutplane] \
2266	-variable [itcl::scope _settings($this-xcutplane)]
2267	}
2268	Rappture::Tooltip::for $itk_component(xCutButton) \
2269	"Toggle the X cut plane on/off"
2270	$itk_component(xCutButton) select
2271
2272	itk_component add xCutScale {
2273	::scale $inner.xval -from 100 -to 0 \
2274	-width 10 -orient vertical -showvalue off \
2275	-borderwidth 1 -highlightthickness 0 \
2276	-command [itcl::code $this Slice move x] \
2277	-variable [itcl::scope _settings($this-xcutposition)]
2278	} {
2279	usual
2280	ignore -borderwidth -highlightthickness
2281	}
2282	# Set the default cutplane value before disabling the scale.
2283	$itk_component(xCutScale) set 50
2284	$itk_component(xCutScale) configure -state disabled
2285	Rappture::Tooltip::for $itk_component(xCutScale) \
2286	"@[itcl::code $this SlicerTip x]"
2287
2288	# Y-value slicer...
2289	itk_component add yCutButton {
2290	Rappture::PushButton $inner.ybutton \
2291	-onimage [Rappture::icon y-cutplane] \
2292	-offimage [Rappture::icon y-cutplane] \
2293	-command [itcl::code $this AdjustSetting ycutplane] \
2294	-variable [itcl::scope _settings($this-ycutplane)]
2295	}
2296	Rappture::Tooltip::for $itk_component(yCutButton) \
2297	"Toggle the Y cut plane on/off"
2298	$itk_component(yCutButton) select
2299
2300	itk_component add yCutScale {
2301	::scale $inner.yval -from 100 -to 0 \
2302	-width 10 -orient vertical -showvalue off \
2303	-borderwidth 1 -highlightthickness 0 \
2304	-command [itcl::code $this Slice move y] \
2305	-variable [itcl::scope _settings($this-ycutposition)]
2306	} {
2307	usual
2308	ignore -borderwidth -highlightthickness
2309	}
2310	Rappture::Tooltip::for $itk_component(yCutScale) \
2311	"@[itcl::code $this SlicerTip y]"
2312	# Set the default cutplane value before disabling the scale.
2313	$itk_component(yCutScale) set 50
2314	$itk_component(yCutScale) configure -state disabled
2315
2316	# Z-value slicer...
2317	itk_component add zCutButton {
2318	Rappture::PushButton $inner.zbutton \
2319	-onimage [Rappture::icon z-cutplane] \
2320	-offimage [Rappture::icon z-cutplane] \
2321	-command [itcl::code $this AdjustSetting zcutplane] \
2322	-variable [itcl::scope _settings($this-zcutplane)]
2323	}
2324	Rappture::Tooltip::for $itk_component(zCutButton) \
2325	"Toggle the Z cut plane on/off"
2326	$itk_component(zCutButton) select
2327
2328	itk_component add zCutScale {
2329	::scale $inner.zval -from 100 -to 0 \
2330	-width 10 -orient vertical -showvalue off \
2331	-borderwidth 1 -highlightthickness 0 \
2332	-command [itcl::code $this Slice move z] \
2333	-variable [itcl::scope _settings($this-zcutposition)]
2334	} {
2335	usual
2336	ignore -borderwidth -highlightthickness
2337	}
2338	$itk_component(zCutScale) set 50
2339	$itk_component(zCutScale) configure -state disabled
2340	#$itk_component(zCutScale) configure -state disabled
2341	Rappture::Tooltip::for $itk_component(zCutScale) \
2342	"@[itcl::code $this SlicerTip z]"
2343
2344	blt::table $inner \
2345	1,1 $itk_component(xCutButton) \
2346	1,2 $itk_component(yCutButton) \
2347	1,3 $itk_component(zCutButton) \
2348	0,1 $itk_component(xCutScale) \
2349	0,2 $itk_component(yCutScale) \
2350	0,3 $itk_component(zCutScale) \
2351
2352	blt::table configure $inner r0 r1 c* -resize none
2353	blt::table configure $inner r2 c4 -resize expand
2354	blt::table configure $inner c0 -width 2
2355	blt::table configure $inner c1 c2 c3 -padx 2
2356	}
2357
2358	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2359	set inner [$itk_component(main) insert end \
2360	-title "Camera Settings" \
2361	-icon [Rappture::icon camera]]
2362	$inner configure -borderwidth 4
2363
2364	label $inner.view_l -text "view" -font "Arial 9"
2365	set f [frame $inner.view]
2366	foreach side { front back left right top bottom } {
2367	button $f.$side -image [Rappture::icon view$side] \
2368	-command [itcl::code $this SetOrientation $side]
2369	Rappture::Tooltip::for $f.$side "Change the view to $side"
2370	pack $f.$side -side left
2371	}
2372
2373	blt::table $inner \
2374	0,0 $inner.view_l -anchor e -pady 2 \
2375	0,1 $inner.view -anchor w -pady 2
2376	blt::table configure $inner r0 -resize none
2377
2378	set row 1
2379	set labels { qw qx qy qz xpan ypan zoom }
2380	foreach tag $labels {
2381	label $inner.${tag}label -text $tag -font "Arial 9"
2382	entry $inner.${tag} -font "Arial 9" -bg white \
2383	-textvariable [itcl::scope _settings(-$tag)]
2384	bind $inner.${tag} <Return> \
2385	[itcl::code $this camera set -${tag}]
2386	bind $inner.${tag} <KP_Enter> \
2387	[itcl::code $this camera set -${tag}]
2388	blt::table $inner \
2389	$row,0 $inner.${tag}label -anchor e -pady 2 \
2390	$row,1 $inner.${tag} -anchor w -pady 2
2391	blt::table configure $inner r$row -resize none
2392	incr row
2393	}
2394
2395	blt::table configure $inner c* -resize none
2396	blt::table configure $inner c2 -resize expand
2397	blt::table configure $inner r$row -resize expand
2398	}
2399
2400	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2401	set flowobj ""
2402	foreach key [array names _dataset2flow] {
2403	set flowobj $_dataset2flow($key)
2404	break
2405	}
2406	if { $flowobj == "" } {
2407	return
2408	}
2409	if { [winfo exists $w.frame] } {
2410	destroy $w.frame
2411	}
2412	set inner [frame $w.frame]
2413	blt::table $w \
2414	5,0 $inner -fill both -cspan 2 -anchor nw
2415	array set hints [$flowobj hints]
2416	checkbutton $inner.showstreams -text "Streams Plane" \
2417	-variable [itcl::scope _settings($this-streams)] \
2418	-command [itcl::code $this streams $key $hints(name)] \
2419	-font "Arial 9"
2420	Rappture::Tooltip::for $inner.showstreams $hints(description)
2421
2422	checkbutton $inner.showarrows -text "Arrows" \
2423	-variable [itcl::scope _settings($this-arrows)] \
2424	-command [itcl::code $this arrows $key $hints(name)] \
2425	-font "Arial 9"
2426
2427	label $inner.particles -text "Particles" -font "Arial 9 bold"
2428	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2429
2430	blt::table $inner \
2431	1,0 $inner.showstreams -anchor w \
2432	2,0 $inner.showarrows -anchor w
2433	blt::table configure $inner c0 c1 -resize none
2434	blt::table configure $inner c2 -resize expand
2435
2436	set row 3
2437	set particles [$flowobj particles]
2438	if { [llength $particles] > 0 } {
2439	blt::table $inner $row,0 $inner.particles -anchor w
2440	incr row
2441	}
2442	foreach part $particles {
2443	array unset info
2444	array set info $part
2445	set name $info(name)
2446	if { ![info exists _settings($this-particles-$name)] } {
2447	set _settings($this-particles-$name) $info(hide)
2448	}
2449	checkbutton $inner.part$row -text $info(label) \
2450	-variable [itcl::scope _settings($this-particles-$name)] \
2451	-onvalue 0 -offvalue 1 \
2452	-command [itcl::code $this particles $key $name] \
2453	-font "Arial 9"
2454	Rappture::Tooltip::for $inner.part$row $info(description)
2455	blt::table $inner $row,0 $inner.part$row -anchor w
2456	if { !$_settings($this-particles-$name) } {
2457	$inner.part$row select
2458	}
2459	incr row
2460	}
2461	set boxes [$flowobj boxes]
2462	if { [llength $boxes] > 0 } {
2463	blt::table $inner $row,0 $inner.boxes -anchor w
2464	incr row
2465	}
2466	foreach box $boxes {
2467	array unset info
2468	array set info $box
2469	set name $info(name)
2470	if { ![info exists _settings($this-box-$name)] } {
2471	set _settings($this-box-$name) $info(hide)
2472	}
2473	checkbutton $inner.box$row -text $info(label) \
2474	-variable [itcl::scope _settings($this-box-$name)] \
2475	-onvalue 0 -offvalue 1 \
2476	-command [itcl::code $this box $key $name] \
2477	-font "Arial 9"
2478	Rappture::Tooltip::for $inner.box$row $info(description)
2479	blt::table $inner $row,0 $inner.box$row -anchor w
2480	if { !$_settings($this-box-$name) } {
2481	$inner.box$row select
2482	}
2483	incr row
2484	}
2485	blt::table configure $inner r* -resize none
2486	blt::table configure $inner r$row -resize expand
2487	blt::table configure $inner c3 -resize expand
2488	event generate [winfo parent [winfo parent $w]] <Configure>
2489	}
2490
2491	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2492	set bool $_settings($this-particles-$name)
2493	SendCmd "$tag particles configure {$name} -hide $bool"
2494	}
2495
2496	itcl::body Rappture::FlowvisViewer::box { tag name } {
2497	set bool $_settings($this-box-$name)
2498	SendCmd "$tag box configure {$name} -hide $bool"
2499	}
2500
2501	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2502	set bool $_settings($this-streams)
2503	SendCmd "$tag configure -slice $bool"
2504	}
2505
2506	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2507	set bool $_settings($this-arrows)
2508	SendCmd "$tag configure -arrows $bool"
2509	}
2510
2511	# ----------------------------------------------------------------------
2512	# USAGE: Slice move x\|y\|z <newval>
2513	#
2514	# Called automatically when the user drags the slider to move the
2515	# cut plane that slices 3D data. Gets the current value from the
2516	# slider and moves the cut plane to the appropriate point in the
2517	# data set.
2518	# ----------------------------------------------------------------------
2519	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2520	switch -- $option {
2521	move {
2522	if {[llength $args] != 2} {
2523	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2524	}
2525	set axis [lindex $args 0]
2526	set newval [lindex $args 1]
2527	set newpos [expr {0.01*$newval}]
2528
2529	# show the current value in the readout
2530
2531	set ids [CurrentVolumeIds -cutplanes]
2532	SendCmd "cutplane position $newpos $axis $ids"
2533	}
2534	default {
2535	error "bad option \"$option\": should be axis, move, or volume"
2536	}
2537	}
2538	}
2539
2540	# ----------------------------------------------------------------------
2541	# USAGE: SlicerTip <axis>
2542	#
2543	# Used internally to generate a tooltip for the x/y/z slicer controls.
2544	# Returns a message that includes the current slicer value.
2545	# ----------------------------------------------------------------------
2546	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2547	set val [$itk_component(${axis}CutScale) get]
2548	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2549	}
2550
2551	itcl::body Rappture::FlowvisViewer::Resize {} {
2552	$_arcball resize $_width $_height
2553	SendCmd "screen size $_width $_height"
2554	set _resizePending 0
2555	}
2556
2557	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2558	set _width $w
2559	set _height $h
2560	$_arcball resize $w $h
2561	if { !$_resizePending } {
2562	$_dispatcher event -after 200 !resize
2563	set _resizePending 1
2564	}
2565	}
2566
2567	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2568	if { !$_resizeLegendPending } {
2569	$_dispatcher event -after 100 !legend
2570	set _resizeLegendPending 1
2571	}
2572	}
2573
2574	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2575	set _flow(goto) $nSteps
2576	if { !$_gotoPending } {
2577	$_dispatcher event -after 1000 !goto
2578	set _gotoPending 1
2579	}
2580	}
2581
2582	# camera --
2583	itcl::body Rappture::FlowvisViewer::camera {option args} {
2584	switch -- $option {
2585	"show" {
2586	puts [array get _view]
2587	}
2588	"set" {
2589	set what [lindex $args 0]
2590	set x $_settings(${this}${what})
2591	set code [catch { string is double $x } result]
2592	if { $code != 0 \|\| !$result } {
2593	set _settings(${this}${what}) $_view($what)
2594	return
2595	}
2596	switch -- $what {
2597	"-xpan" - "-ypan" {
2598	set _view($what) $_settings(${this}${what})
2599	PanCamera
2600	}
2601	"-qx" - "-qy" - "-qz" - "-qw" {
2602	set _view($what) $_settings(${this}${what})
2603	set q [ViewToQuaternion]
2604	$_arcball quaternion $q
2605	SendCmd "camera orient $q"
2606	}
2607	"-zoom" {
2608	set _view($what) $_settings(${this}${what})
2609	SendCmd "camera zoom $_view($what)"
2610	}
2611	}
2612	}
2613	}
2614	}
2615
2616	itcl::body Rappture::FlowvisViewer::SendFlowCmd { dataobj comp nbytes extents } {
2617	set tag "$dataobj-$comp"
2618	if { ![info exists _dataset2flow($tag)] } {
2619	SendCmd "flow add $tag"
2620	SendCmd "$tag data follows $nbytes $extents"
2621	return 0
2622	}
2623	set flowobj $_dataset2flow($tag)
2624	if { $flowobj == "" } {
2625	puts stderr "no flowobj"
2626	return -1
2627	}
2628	SendCmd "if {\[flow exists $tag\]} {flow delete $tag}"
2629	array set info [$flowobj hints]
2630	set _settings($this-volume) $info(volume)
2631	set _settings($this-outline) $info(outline)
2632	set _settings($this-arrows) $info(arrows)
2633	set _settings($this-duration) $info(duration)
2634	$itk_component(speed) value $info(speed)
2635	set cmd {}
2636	append cmd "flow add $tag"
2637	append cmd " -position $info(position)"
2638	append cmd " -axis $info(axis)"
2639	append cmd " -volume $info(volume)"
2640	append cmd " -outline $info(outline)"
2641	append cmd " -slice $info(streams)"
2642	append cmd " -arrows $info(arrows)"
2643	SendCmd $cmd
2644	foreach part [$flowobj particles] {
2645	set cmd {}
2646	array unset info
2647	array set info $part
2648	set color [Color2RGB $info(color)]
2649	append cmd "$tag particles add $info(name)"
2650	append cmd " -position $info(position)"
2651	append cmd " -hide $info(hide)"
2652	append cmd " -axis $info(axis)"
2653	append cmd " -color {$color}"
2654	append cmd " -size $info(size)"
2655	SendCmd $cmd
2656	}
2657	foreach box [$flowobj boxes] {
2658	set cmd {}
2659	array unset info
2660	set info(corner1) ""
2661	set info(corner2) ""
2662	array set info $box
2663	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2664	continue
2665	}
2666	set color [Color2RGB $info(color)]
2667	append cmd "$tag box add $info(name)"
2668	append cmd " -color {$color}"
2669	append cmd " -hide $info(hide)"
2670	append cmd " -linewidth $info(linewidth) "
2671	append cmd " -corner1 {$info(corner1)} "
2672	append cmd " -corner2 {$info(corner2)}"
2673	SendCmd $cmd
2674	}
2675	SendCmd "$tag data follows $nbytes $extents"
2676	return 0
2677	}
2678
2679
2680	#
2681	# flow --
2682	#
2683	# Called when the user clicks on the stop or play buttons
2684	# for flow visualization.
2685	#
2686	# $this flow play
2687	# $this flow stop
2688	# $this flow toggle
2689	# $this flow reset
2690	# $this flow pause
2691	# $this flow next
2692	#
2693	itcl::body Rappture::FlowvisViewer::flow { args } {
2694	set option [lindex $args 0]
2695	switch -- $option {
2696	"goto2" {
2697	puts stderr "actually sending \"flow goto $_flow(goto)\""
2698	SendCmd "flow goto $_flow(goto)"
2699	set _gotoPending 0
2700	}
2701	"goto" {
2702	puts stderr "flow goto to $_settings($this-currenttime)"
2703	# Figure out how many steps to the current time based upon
2704	# the speed and duration.
2705	set current $_settings($this-currenttime)
2706	set speed [$itk_component(speed) value]
2707	set time [str2millisecs $_settings($this-duration)]
2708	$itk_component(dial) configure -max $time
2709	set delay [expr int(round(500.0/$speed))]
2710	set timePerStep [expr {double($time) / $delay}]
2711	set nSteps [expr {int(ceil($current/$timePerStep))}]
2712	EventuallyGoto $nSteps
2713	}
2714	"speed" {
2715	set speed [$itk_component(speed) value]
2716	set _flow(delay) [expr int(round(500.0/$speed))]
2717	}
2718	"duration" {
2719	set max [str2millisecs $_settings($this-duration)]
2720	if { $max < 0 } {
2721	bell
2722	return
2723	}
2724	set _flow(duration) $max
2725	set _settings($this-duration) [millisecs2str $max]
2726	$itk_component(dial) configure -max $max
2727	}
2728	"off" {
2729	set _flow(state) 0
2730	$_dispatcher cancel !play
2731	$itk_component(play) deselect
2732	}
2733	"on" {
2734	flow speed
2735	flow duration
2736	set _flow(state) 1
2737	set _settings($this-currenttime) 0
2738	$itk_component(play) select
2739	}
2740	"stop" {
2741	if { $_flow(state) } {
2742	flow off
2743	flow reset
2744	}
2745	}
2746	"pause" {
2747	if { $_flow(state) } {
2748	flow off
2749	}
2750	}
2751	"play" {
2752	# If the flow is currently off, then restart it.
2753	if { !$_flow(state) } {
2754	flow on
2755	# If we're at the end of the flow, reset the flow.
2756	set _settings($this-currenttime) \
2757	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2758	if { $_settings($this-currenttime) >= $_flow(duration) } {
2759	set _settings($this-step) 1
2760	SendCmd "flow reset"
2761	}
2762	flow next
2763	}
2764	}
2765	"toggle" {
2766	if { $_settings($this-play) } {
2767	flow play
2768	} else {
2769	flow pause
2770	}
2771	}
2772	"reset" {
2773	set _settings($this-currenttime) 0
2774	SendCmd "flow reset"
2775	}
2776	"next" {
2777	if { ![winfo viewable $itk_component(3dview)] } {
2778	flow stop
2779	return
2780	}
2781	set _settings($this-currenttime) \
2782	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2783	if { $_settings($this-currenttime) >= $_flow(duration) } {
2784	if { !$_settings($this-loop) } {
2785	flow off
2786	return
2787	}
2788	flow reset
2789	} else {
2790	SendCmd "flow next"
2791	}
2792	$_dispatcher event -after $_flow(delay) !play
2793	}
2794	default {
2795	error "bad option \"$option\": should be play, stop, toggle, or reset."
2796	}
2797	}
2798	}
2799
2800	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2801	switch -- $option {
2802	"start" {
2803	$_dispatcher dispatch $this !waiticon \
2804	"[itcl::code $this WaitIcon "next" $widget] ; list"
2805	set _icon 0
2806	$widget configure -image [Rappture::icon bigroller${_icon}]
2807	$_dispatcher event -after 100 !waiticon
2808	}
2809	"next" {
2810	incr _icon
2811	if { $_icon >= 8 } {
2812	set _icon 0
2813	}
2814	$widget configure -image [Rappture::icon bigroller${_icon}]
2815	$_dispatcher event -after 100 !waiticon
2816	}
2817	"stop" {
2818	$_dispatcher cancel !waiticon
2819	}
2820	}
2821	}
2822
2823	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2824	set token "print[incr _nextToken]"
2825	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2826	set $var ""
2827
2828	# Setup an automatic timeout procedure.
2829	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2830
2831	set popup .flowvisviewerprint
2832	if {![winfo exists $popup]} {
2833	Rappture::Balloon $popup -title "Generating file..."
2834	set inner [$popup component inner]
2835	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2836	label $inner.please -text "This may take a minute." -font "Arial 10"
2837	label $inner.icon -image [Rappture::icon bigroller0]
2838	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2839	-command [list set $var ""]
2840	blt::table $inner \
2841	0,0 $inner.title -cspan 2 \
2842	1,0 $inner.please -anchor w \
2843	1,1 $inner.icon -anchor e \
2844	2,0 $inner.cancel -cspan 2
2845	blt::table configure $inner r0 -pady 4
2846	blt::table configure $inner r2 -pady 4
2847	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2848	} else {
2849	set inner [$popup component inner]
2850	}
2851
2852	$_dispatcher event -after 60000 !pngtimeout
2853	WaitIcon start $inner.icon
2854	grab set $inner
2855	focus $inner.cancel
2856
2857	SendCmd "print $token $width $height"
2858
2859	$popup activate $widget below
2860	update idletasks
2861	update
2862	# We wait here for either
2863	# 1) the png to be delivered or
2864	# 2) timeout or
2865	# 3) user cancels the operation.
2866	tkwait variable $var
2867
2868	# Clean up.
2869	$_dispatcher cancel !pngtimeout
2870	WaitIcon stop $inner.icon
2871	grab release $inner
2872	$popup deactivate
2873	update
2874
2875	if { $_hardcopy($this-$token) != "" } {
2876	return [list .png $_hardcopy($this-$token)]
2877	}
2878	return ""
2879	}
2880
2881	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2882	set token "movie[incr _nextToken]"
2883	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2884	set $var ""
2885
2886	# Setup an automatic timeout procedure.
2887	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2888	set popup .flowvisviewermovie
2889	if {![winfo exists $popup]} {
2890	Rappture::Balloon $popup -title "Generating movie..."
2891	set inner [$popup component inner]
2892	label $inner.title -text "Generating movie for download" \
2893	-font "Arial 10 bold"
2894	label $inner.please -text "This may take a few minutes." \
2895	-font "Arial 10"
2896	label $inner.icon -image [Rappture::icon bigroller0]
2897	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2898	-command [list set $var ""]
2899	blt::table $inner \
2900	0,0 $inner.title -cspan 2 \
2901	1,0 $inner.please -anchor w \
2902	1,1 $inner.icon -anchor e \
2903	2,0 $inner.cancel -cspan 2
2904	blt::table configure $inner r0 -pady 4
2905	blt::table configure $inner r2 -pady 4
2906	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2907	} else {
2908	set inner [$popup component inner]
2909	}
2910	update
2911	# Timeout is set to 10 minutes.
2912	$_dispatcher event -after 600000 !movietimeout
2913	WaitIcon start $inner.icon
2914	grab set $inner
2915	focus $inner.cancel
2916
2917	flow duration
2918	flow speed
2919	set nframes [expr round($_flow(duration) / $_flow(delay))]
2920	set framerate [expr 1000.0 / $_flow(delay)]
2921
2922	# These are specific to MPEG1 video generation
2923	set framerate 25.0
2924	set bitrate 6.0e+6
2925
2926	set start [clock seconds]
2927	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2928
2929	$popup activate $widget below
2930	update idletasks
2931	update
2932	# We wait here until
2933	# 1. the movie is delivered or
2934	# 2. we've timed out or
2935	# 3. the user has canceled the operation.b
2936	tkwait variable $var
2937
2938	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2939
2940	# Clean up.
2941	$_dispatcher cancel !movietimeout
2942	WaitIcon stop $inner.icon
2943	grab release $inner
2944	$popup deactivate
2945	destroy $popup
2946	update
2947
2948	# This will both cancel the movie generation (if it hasn't already
2949	# completed) and reset the flow.
2950	SendCmd "flow reset"
2951	if { $_hardcopy($this-$token) != "" } {
2952	return [list .mpg $_hardcopy($this-$token)]
2953	}
2954	return ""
2955	}
2956
2957	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2958	set parts [split $value :]
2959	set secs 0
2960	set mins 0
2961	if { [llength $parts] == 1 } {
2962	scan [lindex $parts 0] "%d" secs
2963	} else {
2964	scan [lindex $parts 1] "%d" secs
2965	scan [lindex $parts 0] "%d" mins
2966	}
2967	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2968	if { $ms > 600000.0 } {
2969	set ms 600000.0
2970	}
2971	if { $ms == 0.0 } {
2972	set ms 60000.0
2973	}
2974	return $ms
2975	}
2976
2977	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2978	set min [expr floor($value / 60000.0)]
2979	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2980	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2981	}
2982
2983	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2984	array set positions {
2985	front "1 0 0 0"
2986	back "0 0 1 0"
2987	left "0.707107 0 -0.707107 0"
2988	right "0.707107 0 0.707107 0"
2989	top "0.707107 -0.707107 0 0"
2990	bottom "0.707107 0.707107 0 0"
2991	}
2992	foreach name { -qw -qx -qy -qz } value $positions($side) {
2993	set _view($name) $value
2994	}
2995	set q [ViewToQuaternion]
2996	$_arcball quaternion $q
2997	SendCmd "camera orient $q"
2998	SendCmd "camera reset"
2999	set _view(-xpan) 0.0
3000	set _view(-ypan) 0.0
3001	set _view(-zoom) 1.0
3002	set _settings(-xpan) $_view(-xpan)
3003	set _settings(-ypan) $_view(-ypan)
3004	set _settings(-zoom) $_view(-zoom)
3005	}
3006
3007	# Reset global settings from dataset's settings.
3008	itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
3009	$itk_component(volcomponents) choices delete 0 end
3010	foreach name $_componentsList {
3011	$itk_component(volcomponents) choices insert end $name $name
3012	}
3013	set _current [lindex $_componentsList 0]
3014	$itk_component(volcomponents) value $_current
3015	}
3016
3017	# Reset global settings from dataset's settings.
3018	itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
3019	if { ![info exists _volcomponents($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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