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source: branches/r9/gui/scripts/flowvisviewer.tcl @ 5106

Last change on this file since 5106 was 4919, checked in by gah, 9 years ago

File size: 102.3 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	#
6	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7	# It connects to the Flowvis server running on a rendering farm, transmits
8	# data, and displays the results.
9	#
10	# ======================================================================
11	# AUTHOR: Michael McLennan, Purdue University
12	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
13	#
14	# See the file "license.terms" for information on usage and redistribution of
15	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16	# ======================================================================
17	package require Itk
18	package require BLT
19	package require Img
20
21	option add *FlowvisViewer.width 5i widgetDefault
22	option add FlowvisViewercursor crosshair widgetDefault
23	option add *FlowvisViewer.height 4i widgetDefault
24	option add *FlowvisViewer.foreground black widgetDefault
25	option add *FlowvisViewer.controlBackground gray widgetDefault
26	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27	option add *FlowvisViewer.plotBackground black widgetDefault
28	option add *FlowvisViewer.plotForeground white widgetDefault
29	option add *FlowvisViewer.plotOutline gray widgetDefault
30	option add *FlowvisViewer.font \
31	--helvetica-medium-r-normal--12-* widgetDefault
32
33	# must use this name -- plugs into Rappture::resources::load
34	proc FlowvisViewer_init_resources {} {
35	Rappture::resources::register \
36	nanovis_server Rappture::FlowvisViewer::SetServerList
37	}
38
39	itcl::class Rappture::FlowvisViewer {
40	inherit Rappture::VisViewer
41
42	itk_option define -plotforeground plotForeground Foreground ""
43	itk_option define -plotbackground plotBackground Background ""
44	itk_option define -plotoutline plotOutline PlotOutline ""
45
46	private variable _volcomponents ; # Array of components found
47	private variable _componentsList ; # Array of components found
48	private method BuildVolumeComponents {}
49	private method GetDatasetsWithComponent { cname }
50
51	constructor { hostlist args } {
52	Rappture::VisViewer::constructor $hostlist
53	} {
54	# defined below
55	}
56	destructor {
57	# defined below
58	}
59	public proc SetServerList { namelist } {
60	Rappture::VisViewer::SetServerList "nanovis" $namelist
61	}
62	public method add {dataobj {settings ""}}
63	public method camera {option args}
64	public method delete {args}
65	public method disconnect {}
66	public method download {option args}
67	public method flow {option}
68	public method get {args}
69	public method isconnected {}
70	public method limits { cname }
71	public method overMarker { m x }
72	public method parameters {title args} {
73	# do nothing
74	}
75	public method removeDuplicateMarker { m x }
76	public method scale {args}
77	public method updateTransferFunctions {}
78
79	protected method Connect {}
80	protected method CurrentVolumeIds {{what -all}}
81	protected method Disconnect {}
82	protected method Resize {}
83	protected method ResizeLegend {}
84	protected method AdjustSetting {what {value ""}}
85	protected method InitSettings { args }
86	protected method Pan {option x y}
87	protected method Rebuild {}
88	protected method ReceiveData { args }
89	protected method ReceiveImage { args }
90	protected method ReceiveLegend { tf vmin vmax size }
91	protected method Rotate {option x y}
92	protected method SendTransferFuncs {}
93	protected method Slice {option args}
94	protected method SlicerTip {axis}
95	protected method Zoom {option}
96
97	# soon to be removed.
98	protected method Flow {option args}
99	protected method Play {}
100	protected method Pause {}
101
102
103	# The following methods are only used by this class.
104
105	private method AddIsoMarker { x y }
106	private method BuildCameraTab {}
107	private method BuildCutplanesTab {}
108	private method BuildViewTab {}
109	private method BuildVolumeTab {}
110	private method ComputeTransferFunc { tf }
111	private method EventuallyResize { w h }
112	private method EventuallyGoto { nSteps }
113	private method EventuallyResizeLegend { }
114	private method FlowCmd { dataobj comp nbytes extents }
115	private method GetMovie { widget width height }
116	private method GetPngImage { widget width height }
117	private method NameTransferFunc { dataobj comp }
118	private method PanCamera {}
119	private method ParseLevelsOption { tf levels }
120	private method ParseMarkersOption { tf markers }
121	private method WaitIcon { option widget }
122	private method str2millisecs { value }
123	private method millisecs2str { value }
124	private method GetFlowInfo { widget }
125	private method particles { tag name }
126	private method box { tag name }
127	private method streams { tag name }
128	private method arrows { tag name }
129	private method SetOrientation { side }
130
131	private variable _arcball ""
132	private variable _dlist "" ;# list of data objects
133	private variable _allDataObjs
134	private variable _obj2ovride ;# maps dataobj => style override
135	private variable _serverObjs ;# maps dataobj-component to volume ID
136	# in the server
137	private variable _recvObjs ;# list of data objs to send to server
138	private variable _obj2style ;# maps dataobj-component to transfunc
139	private variable _style2objs ;# maps tf back to list of
140	# dataobj-components using the tf.
141	private variable _obj2flow; # Maps dataobj-component to a flow.
142
143	private variable _reset 1; # Connection to server has been reset
144	private variable _click ;# info used for rotate operations
145	private variable _limits ;# autoscale min/max for all axes
146	private variable _view ;# view params for 3D view
147	private variable _isomarkers ;# array of isosurface level values 0..1
148	private common _settings
149	private variable _activeTf "" ;# The currently active transfer function.
150	private variable _first "" ;# This is the topmost volume.
151	private variable _nextToken 0
152	private variable _icon 0
153	private variable _flow
154	# This
155	# indicates which isomarkers and transfer
156	# function to use when changing markers,
157	# opacity, or thickness.
158	private common _downloadPopup ;# download options from popup
159
160	private common _hardcopy
161	private variable _width 0
162	private variable _height 0
163	private variable _resizePending 0
164	private variable _resizeLegendPending 0
165	private variable _gotoPending 0
166	}
167
168	itk::usual FlowvisViewer {
169	keep -background -foreground -cursor -font
170	keep -plotbackground -plotforeground
171	}
172
173	# ----------------------------------------------------------------------
174	# CONSTRUCTOR
175	# ----------------------------------------------------------------------
176	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
177	set _serverType "nanovis"
178
179	# Draw legend event
180	$_dispatcher register !legend
181	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
182
183	# Send transferfunctions event
184	$_dispatcher register !send_transfunc
185	$_dispatcher dispatch $this !send_transfunc \
186	"[itcl::code $this SendTransferFuncs]; list"
187
188	# Rebuild event.
189	$_dispatcher register !rebuild
190	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
191
192	# Resize event.
193	$_dispatcher register !resize
194	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
195
196	$_dispatcher register !play
197	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
198
199	# Draw legend event
200	$_dispatcher register !goto
201	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
202
203	$_dispatcher register !movietimeout
204	$_dispatcher register !waiticon
205
206	set _flow(state) 0
207
208	array set _downloadPopup {
209	format draft
210	}
211	#
212	# Populate parser with commands handle incoming requests
213	#
214	$_parser alias image [itcl::code $this ReceiveImage]
215	$_parser alias legend [itcl::code $this ReceiveLegend]
216	$_parser alias data [itcl::code $this ReceiveData]
217
218	# Initialize the view to some default parameters.
219	array set _view {
220	qw 0.853553
221	qx -0.353553
222	qy 0.353553
223	qz 0.146447
224	zoom 1.0
225	xpan 0
226	ypan 0
227	}
228	set _arcball [blt::arcball create 100 100]
229	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
230	$_arcball quaternion $q
231
232	set _limits(v) [list 0.0 1.0]
233	set _reset 1
234
235	array set _settings [subst {
236	$this-qw $_view(qw)
237	$this-qx $_view(qx)
238	$this-qy $_view(qy)
239	$this-qz $_view(qz)
240	$this-zoom $_view(zoom)
241	$this-xpan $_view(xpan)
242	$this-ypan $_view(ypan)
243	$this-arrows 0
244	$this-currenttime 0
245	$this-duration 1:00
246	$this-loop 0
247	$this-play 0
248	$this-speed 500
249	$this-step 0
250	$this-streams 0
251	$this-volume 1
252	$this-xcutplane 0
253	$this-xcutposition 0
254	$this-ycutplane 0
255	$this-ycutposition 0
256	$this-zcutplane 0
257	$this-zcutposition 0
258	}]
259
260	itk_component add 3dview {
261	label $itk_component(plotarea).view -image $_image(plot) \
262	-highlightthickness 0 -borderwidth 0
263	} {
264	usual
265	ignore -highlightthickness -borderwidth -background
266	}
267	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
268
269	set f [$itk_component(main) component controls]
270	itk_component add reset {
271	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
272	-highlightthickness 0 \
273	-image [Rappture::icon reset-view] \
274	-command [itcl::code $this Zoom reset]
275	} {
276	usual
277	ignore -highlightthickness
278	}
279	pack $itk_component(reset) -side top -padx 2 -pady 2
280	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
281
282	itk_component add zoomin {
283	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
284	-highlightthickness 0 \
285	-image [Rappture::icon zoom-in] \
286	-command [itcl::code $this Zoom in]
287	} {
288	usual
289	ignore -highlightthickness
290	}
291	pack $itk_component(zoomin) -side top -padx 2 -pady 2
292	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
293
294	itk_component add zoomout {
295	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
296	-highlightthickness 0 \
297	-image [Rappture::icon zoom-out] \
298	-command [itcl::code $this Zoom out]
299	} {
300	usual
301	ignore -highlightthickness
302	}
303	pack $itk_component(zoomout) -side top -padx 2 -pady 2
304	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
305
306	itk_component add volume {
307	Rappture::PushButton $f.volume \
308	-onimage [Rappture::icon volume-on] \
309	-offimage [Rappture::icon volume-off] \
310	-command [itcl::code $this AdjustSetting volume] \
311	-variable [itcl::scope _settings($this-volume)]
312	}
313	$itk_component(volume) select
314	Rappture::Tooltip::for $itk_component(volume) \
315	"Toggle the volume cloud on/off"
316	pack $itk_component(volume) -padx 2 -pady 2
317
318	if { [catch {
319	BuildViewTab
320	BuildVolumeTab
321	BuildCutplanesTab
322	BuildCameraTab
323	} errs] != 0 } {
324	global errorInfo
325	puts stderr "errs=$errs errorInfo=$errorInfo"
326	}
327
328	bind $itk_component(3dview) <Configure> \
329	[itcl::code $this EventuallyResize %w %h]
330
331	# Legend
332	set _image(legend) [image create photo]
333	itk_component add legend {
334	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
335	} {
336	usual
337	ignore -highlightthickness
338	rename -background -plotbackground plotBackground Background
339	}
340	bind $itk_component(legend) <Configure> \
341	[itcl::code $this EventuallyResizeLegend]
342
343	# Hack around the Tk panewindow. The problem is that the requested
344	# size of the 3d view isn't set until an image is retrieved from
345	# the server. So the panewindow uses the tiny size.
346	set w 10000
347	pack forget $itk_component(3dview)
348	blt::table $itk_component(plotarea) \
349	0,0 $itk_component(3dview) -fill both -reqwidth $w \
350	1,0 $itk_component(legend) -fill x
351	blt::table configure $itk_component(plotarea) r1 -resize none
352	# Create flow controls...
353
354	itk_component add flowcontrols {
355	frame $itk_interior.flowcontrols
356	} {
357	usual
358	rename -background -controlbackground controlBackground Background
359	}
360	pack forget $itk_component(main)
361	blt::table $itk_interior \
362	0,0 $itk_component(main) -fill both \
363	1,0 $itk_component(flowcontrols) -fill x
364	blt::table configure $itk_interior r1 -resize none
365
366	# Rewind
367	itk_component add rewind {
368	button $itk_component(flowcontrols).reset \
369	-borderwidth 1 -padx 1 -pady 1 \
370	-image [Rappture::icon flow-rewind] \
371	-command [itcl::code $this flow reset]
372	} {
373	usual
374	ignore -borderwidth
375	rename -highlightbackground -controlbackground controlBackground \
376	Background
377	}
378	Rappture::Tooltip::for $itk_component(rewind) \
379	"Rewind flow"
380
381	# Stop
382	itk_component add stop {
383	button $itk_component(flowcontrols).stop \
384	-borderwidth 1 -padx 1 -pady 1 \
385	-image [Rappture::icon flow-stop] \
386	-command [itcl::code $this flow stop]
387	} {
388	usual
389	ignore -borderwidth
390	rename -highlightbackground -controlbackground controlBackground \
391	Background
392	}
393	Rappture::Tooltip::for $itk_component(stop) \
394	"Stop flow"
395
396	# Play
397	itk_component add play {
398	Rappture::PushButton $itk_component(flowcontrols).play \
399	-onimage [Rappture::icon flow-pause] \
400	-offimage [Rappture::icon flow-play] \
401	-variable [itcl::scope _settings($this-play)] \
402	-command [itcl::code $this flow toggle]
403	}
404	set fg [option get $itk_component(hull) font Font]
405	Rappture::Tooltip::for $itk_component(play) \
406	"Play/Pause flow"
407
408	# Loop
409	itk_component add loop {
410	Rappture::PushButton $itk_component(flowcontrols).loop \
411	-onimage [Rappture::icon flow-loop] \
412	-offimage [Rappture::icon flow-loop] \
413	-variable [itcl::scope _settings($this-loop)]
414	}
415	Rappture::Tooltip::for $itk_component(loop) \
416	"Play continuously"
417
418	itk_component add dial {
419	Rappture::Flowdial $itk_component(flowcontrols).dial \
420	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
421	-linecolor "" -activelinecolor "" \
422	-min 0.0 -max 1.0 \
423	-variable [itcl::scope _settings($this-currenttime)] \
424	-knobimage [Rappture::icon knob2] -knobposition center@middle
425	} {
426	usual
427	ignore -dialprogresscolor
428	rename -background -controlbackground controlBackground Background
429	}
430	$itk_component(dial) current 0.0
431	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
432	# Duration
433	itk_component add duration {
434	entry $itk_component(flowcontrols).duration \
435	-textvariable [itcl::scope _settings($this-duration)] \
436	-bg white -width 6 -font "arial 9"
437	} {
438	usual
439	ignore -highlightthickness -background
440	}
441	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
442	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
443	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
444	Rappture::Tooltip::for $itk_component(duration) \
445	"Set duration of flow (format is min:sec)"
446
447
448	itk_component add durationlabel {
449	label $itk_component(flowcontrols).durationl \
450	-text "Duration:" -font $fg \
451	-highlightthickness 0
452	} {
453	usual
454	ignore -highlightthickness
455	rename -background -controlbackground controlBackground Background
456	}
457
458	itk_component add speedlabel {
459	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
460	-highlightthickness 0
461	} {
462	usual
463	ignore -highlightthickness
464	rename -background -controlbackground controlBackground Background
465	}
466
467	# Speed
468	itk_component add speed {
469	Rappture::Flowspeed $itk_component(flowcontrols).speed \
470	-min 1 -max 10 -width 3 -font "arial 9"
471	} {
472	usual
473	ignore -highlightthickness
474	rename -background -controlbackground controlBackground Background
475	}
476	Rappture::Tooltip::for $itk_component(speed) \
477	"Change speed of flow"
478
479	$itk_component(speed) value 1
480	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
481
482
483	blt::table $itk_component(flowcontrols) \
484	0,0 $itk_component(rewind) -padx {3 0} \
485	0,1 $itk_component(stop) -padx {2 0} \
486	0,2 $itk_component(play) -padx {2 0} \
487	0,3 $itk_component(loop) -padx {2 0} \
488	0,4 $itk_component(dial) -fill x -padx {2 0 } \
489	0,5 $itk_component(duration) -padx { 0 0} \
490	0,7 $itk_component(speed) -padx {2 3}
491
492	# 0,6 $itk_component(speedlabel) -padx {2 0}
493	blt::table configure $itk_component(flowcontrols) c* -resize none
494	blt::table configure $itk_component(flowcontrols) c4 -resize both
495	blt::table configure $itk_component(flowcontrols) r0 -pady 1
496	# Bindings for rotation via mouse
497	bind $itk_component(3dview) <ButtonPress-1> \
498	[itcl::code $this Rotate click %x %y]
499	bind $itk_component(3dview) <B1-Motion> \
500	[itcl::code $this Rotate drag %x %y]
501	bind $itk_component(3dview) <ButtonRelease-1> \
502	[itcl::code $this Rotate release %x %y]
503
504	bind $itk_component(3dview) <Configure> \
505	[itcl::code $this EventuallyResize %w %h]
506
507	# Bindings for panning via mouse
508	bind $itk_component(3dview) <ButtonPress-2> \
509	[itcl::code $this Pan click %x %y]
510	bind $itk_component(3dview) <B2-Motion> \
511	[itcl::code $this Pan drag %x %y]
512	bind $itk_component(3dview) <ButtonRelease-2> \
513	[itcl::code $this Pan release %x %y]
514
515	# Bindings for panning via keyboard
516	bind $itk_component(3dview) <KeyPress-Left> \
517	[itcl::code $this Pan set -10 0]
518	bind $itk_component(3dview) <KeyPress-Right> \
519	[itcl::code $this Pan set 10 0]
520	bind $itk_component(3dview) <KeyPress-Up> \
521	[itcl::code $this Pan set 0 -10]
522	bind $itk_component(3dview) <KeyPress-Down> \
523	[itcl::code $this Pan set 0 10]
524	bind $itk_component(3dview) <Shift-KeyPress-Left> \
525	[itcl::code $this Pan set -2 0]
526	bind $itk_component(3dview) <Shift-KeyPress-Right> \
527	[itcl::code $this Pan set 2 0]
528	bind $itk_component(3dview) <Shift-KeyPress-Up> \
529	[itcl::code $this Pan set 0 -2]
530	bind $itk_component(3dview) <Shift-KeyPress-Down> \
531	[itcl::code $this Pan set 0 2]
532
533	# Bindings for zoom via keyboard
534	bind $itk_component(3dview) <KeyPress-Prior> \
535	[itcl::code $this Zoom out]
536	bind $itk_component(3dview) <KeyPress-Next> \
537	[itcl::code $this Zoom in]
538
539	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
540
541	if {[string equal "x11" [tk windowingsystem]]} {
542	# Bindings for zoom via mouse
543	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
544	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
545	}
546
547	set _image(download) [image create photo]
548
549	eval itk_initialize $args
550
551	Connect
552	}
553
554	# ----------------------------------------------------------------------
555	# DESTRUCTOR
556	# ----------------------------------------------------------------------
557	itcl::body Rappture::FlowvisViewer::destructor {} {
558	$_dispatcher cancel !rebuild
559	$_dispatcher cancel !send_transfunc
560	image delete $_image(plot)
561	image delete $_image(legend)
562	image delete $_image(download)
563	catch { blt::arcball destroy $_arcball }
564	array unset _settings $this-*
565	}
566
567	# ----------------------------------------------------------------------
568	# USAGE: add <dataobj> ?<settings>?
569	#
570	# Clients use this to add a data object to the plot. The optional
571	# <settings> are used to configure the plot. Allowed settings are
572	# -color, -brightness, -width, -linestyle, and -raise.
573	# ----------------------------------------------------------------------
574	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
575	array set params {
576	-color auto
577	-width 1
578	-linestyle solid
579	-brightness 0
580	-raise 0
581	-description ""
582	-param ""
583	}
584	array set params $settings
585	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
586	# can't handle -autocolors yet
587	set params(-color) black
588	}
589	foreach comp [$dataobj components] {
590	set flowobj [$dataobj flowhints $comp]
591	if { $flowobj == "" } {
592	puts stderr "no flowhints $dataobj-$comp"
593	continue
594	}
595	set _obj2flow($dataobj-$comp) $flowobj
596	}
597	set pos [lsearch -exact $_dlist $dataobj]
598	if {$pos < 0} {
599	lappend _dlist $dataobj
600	set _allDataObjs($dataobj) 1
601	set _obj2ovride($dataobj-color) $params(-color)
602	set _obj2ovride($dataobj-width) $params(-width)
603	set _obj2ovride($dataobj-raise) $params(-raise)
604	$_dispatcher event -idle !rebuild
605	}
606	}
607
608	# ----------------------------------------------------------------------
609	# USAGE: get ?-objects?
610	# USAGE: get ?-image 3dview\|legend?
611	#
612	# Clients use this to query the list of objects being plotted, in
613	# order from bottom to top of this result. The optional "-image"
614	# flag can also request the internal images being shown.
615	# ----------------------------------------------------------------------
616	itcl::body Rappture::FlowvisViewer::get {args} {
617	if {[llength $args] == 0} {
618	set args "-objects"
619	}
620
621	set op [lindex $args 0]
622	switch -- $op {
623	-objects {
624	# put the dataobj list in order according to -raise options
625	set dlist $_dlist
626	foreach obj $dlist {
627	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
628	set i [lsearch -exact $dlist $obj]
629	if {$i >= 0} {
630	set dlist [lreplace $dlist $i $i]
631	lappend dlist $obj
632	}
633	}
634	}
635	return $dlist
636	}
637	-image {
638	if {[llength $args] != 2} {
639	error "wrong # args: should be \"get -image 3dview\|legend\""
640	}
641	switch -- [lindex $args end] {
642	3dview {
643	return $_image(plot)
644	}
645	legend {
646	return $_image(legend)
647	}
648	default {
649	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
650	}
651	}
652	}
653	default {
654	error "bad option \"$op\": should be -objects or -image"
655	}
656	}
657	}
658
659	# ----------------------------------------------------------------------
660	# USAGE: delete ?<dataobj1> <dataobj2> ...?
661	#
662	# Clients use this to delete a dataobj from the plot. If no dataobjs
663	# are specified, then all dataobjs are deleted. No data objects are
664	# deleted. They are only removed from the display list.
665	#
666	# ----------------------------------------------------------------------
667	itcl::body Rappture::FlowvisViewer::delete {args} {
668	flow stop
669	if {[llength $args] == 0} {
670	set args $_dlist
671	}
672
673	# Delete all specified dataobjs
674	set changed 0
675	foreach dataobj $args {
676	set pos [lsearch -exact $_dlist $dataobj]
677	if { $pos >= 0 } {
678	foreach comp [$dataobj components] {
679	array unset _limits $dataobj-$comp-*
680	}
681	set _dlist [lreplace $_dlist $pos $pos]
682	array unset _obj2ovride $dataobj-*
683	array unset _obj2flow $dataobj-*
684	array unset _serverObjs $dataobj-*
685	array unset _obj2style $dataobj-*
686	set changed 1
687	}
688	}
689	# If anything changed, then rebuild the plot
690	if {$changed} {
691	# Repair the reverse lookup
692	foreach tf [array names _style2objs] {
693	set list {}
694	foreach {dataobj comp} $_style2objs($tf) break
695	if { [info exists _serverObjs($dataobj-$comp)] } {
696	lappend list $dataobj $comp
697	}
698	if { $list == "" } {
699	array unset _style2objs $tf
700	} else {
701	set _style2objs($tf) $list
702	}
703	}
704	$_dispatcher event -idle !rebuild
705	}
706	}
707
708	# ----------------------------------------------------------------------
709	# USAGE: scale ?<data1> <data2> ...?
710	#
711	# Sets the default limits for the overall plot according to the
712	# limits of the data for all of the given <data> objects. This
713	# accounts for all objects--even those not showing on the screen.
714	# Because of this, the limits are appropriate for all objects as
715	# the user scans through data in the ResultSet viewer.
716	# ----------------------------------------------------------------------
717	itcl::body Rappture::FlowvisViewer::scale {args} {
718	array set styles {
719	-color BCGYR
720	-levels 6
721	-markers ""
722	-opacity 1.0
723	}
724	array unset _limits
725	array unset _volcomponents
726	foreach dataobj $args {
727	if { ![$dataobj isvalid] } {
728	continue; # Object doesn't contain valid data.
729	}
730	foreach cname [$dataobj components] {
731	if { ![info exists _volcomponents($cname)] } {
732	lappend _componentsList $cname
733	array set styles [lindex [$dataobj components -style $cname] 0]
734	set cmap [ColorsToColormap $styles(-color)]
735	set _cname2defaultcolormap($cname) $cmap
736	set _settings($cname-colormap) $styles(-color)
737	}
738	lappend _volcomponents($cname) $dataobj-$cname
739	array unset limits
740	array set limits [$dataobj valueLimits $cname]
741	set _limits($cname) $limits(v)
742	}
743	foreach axis {x y z v} {
744	foreach { min max } [$dataobj limits $axis] break
745	if {"" != $min && "" != $max} {
746	if { ![info exists _limits($axis)] } {
747	set _limits($axis) [list $min $max]
748	} else {
749	foreach {amin amax} $_limits($axis) break
750	if {$min < $amin} {
751	set amin $min
752	}
753	if {$max > $amax} {
754	set amax $max
755	}
756	set _limits($axis) [list $amin $amax]
757	}
758	}
759	}
760	}
761	#BuildVolumeComponents
762	}
763
764	# ----------------------------------------------------------------------
765	# USAGE: download coming
766	# USAGE: download controls <downloadCommand>
767	# USAGE: download now
768	#
769	# Clients use this method to create a downloadable representation
770	# of the plot. Returns a list of the form {ext string}, where
771	# "ext" is the file extension (indicating the type of data) and
772	# "string" is the data itself.
773	# ----------------------------------------------------------------------
774	itcl::body Rappture::FlowvisViewer::download {option args} {
775	set popup .flowvisviewerdownload
776	switch $option {
777	coming {
778	if {[catch {
779	blt::winop snap $itk_component(plotarea) $_image(download)
780	}]} {
781	$_image(download) configure -width 1 -height 1
782	$_image(download) put #000000
783	}
784	}
785	controls {
786	if {![winfo exists $popup]} {
787	# if we haven't created the popup yet, do it now
788	Rappture::Balloon $popup \
789	-title "[Rappture::filexfer::label downloadWord] as..."
790	set inner [$popup component inner]
791	label $inner.summary -text "" -anchor w
792	pack $inner.summary -side top
793	set img $_image(plot)
794	set res "[image width $img]x[image height $img]"
795	radiobutton $inner.draft -text "Image (draft $res)" \
796	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
797	-value draft
798	pack $inner.draft -anchor w
799
800	set res "640x480"
801	radiobutton $inner.medium -text "Movie (standard $res)" \
802	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
803	-value $res
804	pack $inner.medium -anchor w
805
806	set res "1024x768"
807	radiobutton $inner.high -text "Movie (high quality $res)" \
808	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
809	-value $res
810	pack $inner.high -anchor w
811	button $inner.go -text [Rappture::filexfer::label download] \
812	-command [lindex $args 0]
813	pack $inner.go -pady 4
814	$inner.draft select
815	} else {
816	set inner [$popup component inner]
817	}
818	set num [llength [get]]
819	set num [expr {($num == 1) ? "1 result" : "$num results"}]
820	set word [Rappture::filexfer::label downloadWord]
821	$inner.summary configure -text "$word $num in the following format:"
822	update idletasks ;# fix initial sizes
823	update
824	return $popup
825	}
826	now {
827	if { [winfo exists $popup] } {
828	$popup deactivate
829	}
830	switch -- $_downloadPopup(format) {
831	draft {
832	# Get the image data (as base64) and decode it back to
833	# binary. This is better than writing to temporary
834	# files. When we switch to the BLT picture image it
835	# won't be necessary to decode the image data.
836	set bytes [$_image(plot) data -format "jpeg -quality 100"]
837	set bytes [Rappture::encoding::decode -as b64 $bytes]
838	return [list .jpg $bytes]
839	}
840	"640x480" {
841	return [$this GetMovie [lindex $args 0] 640 480]
842	}
843	"1024x768" {
844	return [$this GetMovie [lindex $args 0] 1024 768]
845	}
846	default {
847	error "bad download format $_downloadPopup(format)"
848	}
849	}
850	}
851	default {
852	error "bad option \"$option\": should be coming, controls, now"
853	}
854	}
855	}
856
857	# ----------------------------------------------------------------------
858	# USAGE: Connect ?<host:port>,<host:port>...?
859	#
860	# Clients use this method to establish a connection to a new
861	# server, or to reestablish a connection to the previous server.
862	# Any existing connection is automatically closed.
863	# ----------------------------------------------------------------------
864	itcl::body Rappture::FlowvisViewer::Connect {} {
865	set _hosts [GetServerList "nanovis"]
866	if { "" == $_hosts } {
867	return 0
868	}
869	set _reset 1
870	set result [VisViewer::Connect $_hosts]
871	if { $result } {
872	if { $_reportClientInfo } {
873	# Tell the server the viewer, hub, user and session.
874	# Do this immediately on connect before buffering any commands
875	global env
876
877	set info {}
878	set user "???"
879	if { [info exists env(USER)] } {
880	set user $env(USER)
881	}
882	set session "???"
883	if { [info exists env(SESSION)] } {
884	set session $env(SESSION)
885	}
886	lappend info "version" "$Rappture::version"
887	lappend info "build" "$Rappture::build"
888	lappend info "svnurl" "$Rappture::svnurl"
889	lappend info "installdir" "$Rappture::installdir"
890	lappend info "hub" [exec hostname]
891	lappend info "client" "flowvisviewer"
892	lappend info "user" $user
893	lappend info "session" $session
894	SendCmd "clientinfo [list $info]"
895	}
896
897	set w [winfo width $itk_component(3dview)]
898	set h [winfo height $itk_component(3dview)]
899	EventuallyResize $w $h
900	}
901	return $result
902	}
903
904	#
905	# isconnected --
906	#
907	# Indicates if we are currently connected to the visualization server.
908	#
909	itcl::body Rappture::FlowvisViewer::isconnected {} {
910	return [VisViewer::IsConnected]
911	}
912
913	#
914	# disconnect --
915	#
916	itcl::body Rappture::FlowvisViewer::disconnect {} {
917	Disconnect
918	}
919
920	#
921	# Disconnect --
922	#
923	# Clients use this method to disconnect from the current rendering
924	# server.
925	#
926	itcl::body Rappture::FlowvisViewer::Disconnect {} {
927	VisViewer::Disconnect
928
929	# disconnected -- no more data sitting on server
930	array unset _serverObjs
931	}
932
933	# ----------------------------------------------------------------------
934	# USAGE: SendTransferFuncs
935	# ----------------------------------------------------------------------
936	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
937	if { $_activeTf == "" } {
938	puts stderr "no active tf"
939	return
940	}
941	set tf $_activeTf
942	if { $_first == "" } {
943	puts stderr "no first"
944	return
945	}
946
947	# Ensure that the global opacity and thickness settings (in the slider
948	# settings widgets) are used for the active transfer-function. Update the
949	# values in the _settings varible.
950	set value $_settings($this-opacity)
951	set opacity [expr { double($value) * 0.01 }]
952	set _settings($this-$tf-opacity) $opacity
953	set value $_settings($this-thickness)
954	# Scale values between 0.00001 and 0.01000
955	set thickness [expr {double($value) * 0.0001}]
956	set _settings($this-$tf-thickness) $thickness
957
958	foreach key [array names _obj2style $_first-*] {
959	if { [info exists _obj2style($key)] } {
960	foreach tf $_obj2style($key) {
961	ComputeTransferFunc $tf
962	}
963	}
964	}
965	EventuallyResizeLegend
966	}
967
968	# ----------------------------------------------------------------------
969	# USAGE: ReceiveImage -bytes $size -type $type -token $token
970	#
971	# Invoked automatically whenever the "image" command comes in from
972	# the rendering server. Indicates that binary image data with the
973	# specified <size> will follow.
974	# ----------------------------------------------------------------------
975	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
976	array set info {
977	-token "???"
978	-bytes 0
979	-type image
980	}
981	array set info $args
982	set bytes [ReceiveBytes $info(-bytes)]
983	ReceiveEcho <<line "<read $info(-bytes) bytes"
984	switch -- $info(-type) {
985	"image" {
986	$_image(plot) configure -data $bytes
987	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
988	}
989	"print" {
990	set tag $this-$info(-token)
991	set _hardcopy($tag) $bytes
992	}
993	"movie" {
994	set tag $this-$info(-token)
995	set _hardcopy($tag) $bytes
996	}
997	default {
998	puts stderr "unknown download type $info(-type)"
999	}
1000	}
1001	}
1002
1003	#
1004	# ReceiveLegend --
1005	#
1006	# The procedure is the response from the render server to each "legend"
1007	# command. The server sends back a "legend" command invoked our
1008	# the slave interpreter. The purpose is to collect data of the image
1009	# representing the legend in the canvas. In addition, the isomarkers
1010	# of the active transfer function are displayed.
1011	#
1012	# I don't know is this is the right place to display the isomarkers.
1013	# I don't know all the different paths used to draw the plot. There's
1014	# "Rebuild", "add", etc.
1015	#
1016	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1017	if { ![isconnected] } {
1018	return
1019	}
1020	#puts stderr "receive legend $tag $vmin $vmax $size"
1021	set bytes [ReceiveBytes $size]
1022	$_image(legend) configure -data $bytes
1023	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1024
1025	set c $itk_component(legend)
1026	set w [winfo width $c]
1027	set h [winfo height $c]
1028	set lx 10
1029	set ly [expr {$h - 1}]
1030	if {"" == [$c find withtag colorbar]} {
1031	$c create image 10 10 -anchor nw \
1032	-image $_image(legend) -tags colorbar
1033	$c create text $lx $ly -anchor sw \
1034	-fill $itk_option(-plotforeground) -tags "limits vmin"
1035	$c create text [expr {$w-$lx}] $ly -anchor se \
1036	-fill $itk_option(-plotforeground) -tags "limits vmax"
1037	$c lower colorbar
1038	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1039	}
1040	# Display the markers used by the active transfer function.
1041	set tf $_obj2style($tag)
1042	foreach {vmin vmax} [limits $tf] break
1043	$c itemconfigure vmin -text [format %g $vmin]
1044	$c coords vmin $lx $ly
1045
1046	$c itemconfigure vmax -text [format %g $vmax]
1047	$c coords vmax [expr {$w-$lx}] $ly
1048
1049	if { [info exists _isomarkers($tf)] } {
1050	foreach m $_isomarkers($tf) {
1051	$m visible yes
1052	}
1053	}
1054	}
1055
1056	#
1057	# ReceiveData --
1058	#
1059	# The procedure is the response from the render server to each "data
1060	# follows" command. The server sends back a "data" command invoked our
1061	# the slave interpreter. The purpose is to collect the min/max of the
1062	# volume sent to the render server. Since the client (flowvisviewer)
1063	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1064	# tell us what the limits are. Once we've received the limits to all
1065	# the data we've sent (tracked by _recvObjs) we can then determine
1066	# what the transfer functions are for these # volumes.
1067	#
1068	# Note: There is a considerable tradeoff in having the server report
1069	# back what the data limits are. It means that much of the code
1070	# having to do with transfer-functions has to wait for the data
1071	# to come back, since the isomarkers are calculated based upon
1072	# the data limits. The client code is much messier because of
1073	# this. The alternative is to parse any of the 3D formats on the
1074	# client side.
1075	#
1076	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1077	if { ![isconnected] } {
1078	return
1079	}
1080	# Arguments from server are name value pairs. Stuff them in an array.
1081	array set values $args
1082	set tag $values(tag)
1083	set parts [split $tag -]
1084	set dataobj [lindex $parts 0]
1085	set _serverObjs($tag) 0
1086	set _limits($tag) [list $values(min) $values(max)]
1087	unset _recvObjs($tag)
1088	if { [array size _recvObjs] == 0 } {
1089	updateTransferFunctions
1090	}
1091	}
1092
1093	#
1094	# Rebuild --
1095	#
1096	# Called automatically whenever something changes that affects the data
1097	# in the widget. Clears any existing data and rebuilds the widget to
1098	# display new data.
1099	#
1100	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1101	set w [winfo width $itk_component(3dview)]
1102	set h [winfo height $itk_component(3dview)]
1103	if { $w < 2 \|\| $h < 2 } {
1104	$_dispatcher event -idle !rebuild
1105	return
1106	}
1107
1108	# Turn on buffering of commands to the server. We don't want to
1109	# be preempted by a server disconnect/reconnect (which automatically
1110	# generates a new call to Rebuild).
1111	StartBufferingCommands
1112
1113	# Hide all the isomarkers. Can't remove them. Have to remember the
1114	# settings since the user may have created/deleted/moved markers.
1115
1116	foreach tf [array names _isomarkers] {
1117	foreach m $_isomarkers($tf) {
1118	$m visible no
1119	}
1120	}
1121
1122	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1123	set _width $w
1124	set _height $h
1125	$_arcball resize $w $h
1126	Resize
1127	}
1128
1129	set _first ""
1130	foreach dataobj [get] {
1131	foreach comp [$dataobj components] {
1132	set tag $dataobj-$comp
1133	set isvtk 0
1134	# FIXME: Would like to use the type method of the dataobj
1135	# but the returned value isn't well defined now
1136	if {[catch {
1137	# Send the data as one huge base64-encoded mess -- yuck!
1138	set data [$dataobj blob $comp]
1139	}]} {
1140	set data [$dataobj vtkdata $comp]
1141	set isvtk 1
1142	}
1143	set nbytes [string length $data]
1144	if { $_reportClientInfo } {
1145	set info {}
1146	lappend info "tool_id" [$dataobj hints toolId]
1147	lappend info "tool_name" [$dataobj hints toolName]
1148	lappend info "tool_version" [$dataobj hints toolRevision]
1149	lappend info "tool_title" [$dataobj hints toolTitle]
1150	lappend info "dataset_label" [$dataobj hints label]
1151	lappend info "dataset_size" $nbytes
1152	lappend info "dataset_tag" $tag
1153	SendCmd "clientinfo [list $info]"
1154	}
1155	set extents [$dataobj extents $comp]
1156	# I have a field. Is a vector field or a volume field?
1157	if { !$isvtk && $extents == 1 } {
1158	set cmd "volume data follows $nbytes $tag\n"
1159	} else {
1160	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1161	if { $cmd == "" } {
1162	puts stderr "no command"
1163	continue
1164	}
1165	}
1166	append _outbuf $cmd
1167	append _outbuf $data
1168	NameTransferFunc $dataobj $comp
1169	set _recvObjs($tag) 1
1170	}
1171	}
1172
1173	set _first [lindex [get] 0]
1174
1175	# Reset the camera and other view parameters
1176	InitSettings light2side light transp isosurface grid axes volume outline
1177
1178	# nothing to send -- activate the proper volume
1179	if {"" != $_first} {
1180	AdjustSetting light
1181	AdjustSetting transp
1182	set axis [$_first hints updir]
1183	if {"" != $axis} {
1184	SendCmd "up $axis"
1185	}
1186	set location [$_first hints camera]
1187	if { $location != "" } {
1188	array set _view $location
1189	}
1190
1191	}
1192	set _settings($this-qw) $_view(qw)
1193	set _settings($this-qx) $_view(qx)
1194	set _settings($this-qy) $_view(qy)
1195	set _settings($this-qz) $_view(qz)
1196	set _settings($this-xpan) $_view(xpan)
1197	set _settings($this-ypan) $_view(ypan)
1198	set _settings($this-zoom) $_view(zoom)
1199
1200	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1201	$_arcball quaternion $q
1202	SendCmd "camera orient $q"
1203	SendCmd "camera reset"
1204	PanCamera
1205	SendCmd "camera zoom $_view(zoom)"
1206
1207	foreach dataobj [get] {
1208	foreach comp [$dataobj components] {
1209	NameTransferFunc $dataobj $comp
1210	}
1211	}
1212
1213	# nothing to send -- activate the proper ivol
1214	set _first [lindex [get] 0]
1215	if {"" != $_first} {
1216	set axis [$_first hints updir]
1217	if {"" != $axis} {
1218	SendCmd "up $axis"
1219	}
1220	set location [$_first hints camera]
1221	if { $location != "" } {
1222	array set _view $location
1223	}
1224	set comp [lindex [$_first components] 0]
1225	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1226	}
1227
1228
1229	# sync the state of slicers
1230	set vols [CurrentVolumeIds -cutplanes]
1231	foreach axis {x y z} {
1232	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1233	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1234	SendCmd "cutplane position $pos $axis $vols"
1235	}
1236	SendCmd "volume data state $_settings($this-volume)"
1237	EventuallyResizeLegend
1238
1239	# Actually write the commands to the server socket. If it fails, we don't
1240	# care. We're finished here.
1241	blt::busy hold $itk_component(hull)
1242	StopBufferingCommands
1243	blt::busy release $itk_component(hull)
1244	set _reset 0
1245	}
1246
1247	# ----------------------------------------------------------------------
1248	# USAGE: CurrentVolumeIds ?-cutplanes?
1249	#
1250	# Returns a list of volume server IDs for the current volume being
1251	# displayed. This is normally a single ID, but it might be a list
1252	# of IDs if the current data object has multiple components.
1253	# ----------------------------------------------------------------------
1254	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1255	return ""
1256	if { $_first == "" } {
1257	return
1258	}
1259	foreach key [array names _serverObjs -] {
1260	if {[string match $_first-* $key]} {
1261	array set styles {
1262	-cutplanes 1
1263	}
1264	foreach {dataobj comp} [split $key -] break
1265	array set styles [lindex [$dataobj components -style $comp] 0]
1266	if {$what != "-cutplanes" \|\| $styles(-cutplanes)} {
1267	lappend rlist $_serverObjs($key)
1268	}
1269	}
1270	}
1271	return $rlist
1272	}
1273
1274	# ----------------------------------------------------------------------
1275	# USAGE: Zoom in
1276	# USAGE: Zoom out
1277	# USAGE: Zoom reset
1278	#
1279	# Called automatically when the user clicks on one of the zoom
1280	# controls for this widget. Changes the zoom for the current view.
1281	# ----------------------------------------------------------------------
1282	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1283	switch -- $option {
1284	"in" {
1285	set _view(zoom) [expr {$_view(zoom)*1.25}]
1286	set _settings($this-zoom) $_view(zoom)
1287	SendCmd "camera zoom $_view(zoom)"
1288	}
1289	"out" {
1290	set _view(zoom) [expr {$_view(zoom)*0.8}]
1291	set _settings($this-zoom) $_view(zoom)
1292	SendCmd "camera zoom $_view(zoom)"
1293	}
1294	"reset" {
1295	array set _view {
1296	qw 0.853553
1297	qx -0.353553
1298	qy 0.353553
1299	qz 0.146447
1300	zoom 1.0
1301	xpan 0
1302	ypan 0
1303	}
1304	if { $_first != "" } {
1305	set location [$_first hints camera]
1306	if { $location != "" } {
1307	array set _view $location
1308	}
1309	}
1310	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1311	$_arcball quaternion $q
1312	SendCmd "camera orient $q"
1313	SendCmd "camera reset"
1314	set _settings($this-qw) $_view(qw)
1315	set _settings($this-qx) $_view(qx)
1316	set _settings($this-qy) $_view(qy)
1317	set _settings($this-qz) $_view(qz)
1318	set _settings($this-xpan) $_view(xpan)
1319	set _settings($this-ypan) $_view(ypan)
1320	set _settings($this-zoom) $_view(zoom)
1321	}
1322	}
1323	}
1324
1325	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1326	set x $_view(xpan)
1327	set y $_view(ypan)
1328	SendCmd "camera pan $x $y"
1329	}
1330
1331	# ----------------------------------------------------------------------
1332	# USAGE: Rotate click <x> <y>
1333	# USAGE: Rotate drag <x> <y>
1334	# USAGE: Rotate release <x> <y>
1335	#
1336	# Called automatically when the user clicks/drags/releases in the
1337	# plot area. Moves the plot according to the user's actions.
1338	# ----------------------------------------------------------------------
1339	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1340	switch -- $option {
1341	click {
1342	$itk_component(3dview) configure -cursor fleur
1343	set _click(x) $x
1344	set _click(y) $y
1345	}
1346	drag {
1347	if {[array size _click] == 0} {
1348	Rotate click $x $y
1349	} else {
1350	set w [winfo width $itk_component(3dview)]
1351	set h [winfo height $itk_component(3dview)]
1352	if {$w <= 0 \|\| $h <= 0} {
1353	return
1354	}
1355
1356	if {[catch {
1357	# this fails sometimes for no apparent reason
1358	set dx [expr {double($x-$_click(x))/$w}]
1359	set dy [expr {double($y-$_click(y))/$h}]
1360	}]} {
1361	return
1362	}
1363
1364	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1365	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1366	set _settings($this-qw) $_view(qw)
1367	set _settings($this-qx) $_view(qx)
1368	set _settings($this-qy) $_view(qy)
1369	set _settings($this-qz) $_view(qz)
1370	SendCmd "camera orient $q"
1371
1372	set _click(x) $x
1373	set _click(y) $y
1374	}
1375	}
1376	release {
1377	Rotate drag $x $y
1378	$itk_component(3dview) configure -cursor ""
1379	catch {unset _click}
1380	}
1381	default {
1382	error "bad option \"$option\": should be click, drag, release"
1383	}
1384	}
1385	}
1386
1387	# ----------------------------------------------------------------------
1388	# USAGE: $this Pan click x y
1389	# $this Pan drag x y
1390	# $this Pan release x y
1391	#
1392	# Called automatically when the user clicks on one of the zoom
1393	# controls for this widget. Changes the zoom for the current view.
1394	# ----------------------------------------------------------------------
1395	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1396	# Experimental stuff
1397	set w [winfo width $itk_component(3dview)]
1398	set h [winfo height $itk_component(3dview)]
1399	if { $option == "set" } {
1400	set x [expr $x / double($w)]
1401	set y [expr $y / double($h)]
1402	set _view(xpan) [expr $_view(xpan) + $x]
1403	set _view(ypan) [expr $_view(ypan) + $y]
1404	PanCamera
1405	set _settings($this-xpan) $_view(xpan)
1406	set _settings($this-ypan) $_view(ypan)
1407	return
1408	}
1409	if { $option == "click" } {
1410	set _click(x) $x
1411	set _click(y) $y
1412	$itk_component(3dview) configure -cursor hand1
1413	}
1414	if { $option == "drag" \|\| $option == "release" } {
1415	set dx [expr ($_click(x) - $x)/double($w)]
1416	set dy [expr ($_click(y) - $y)/double($h)]
1417	set _click(x) $x
1418	set _click(y) $y
1419	set _view(xpan) [expr $_view(xpan) - $dx]
1420	set _view(ypan) [expr $_view(ypan) - $dy]
1421	PanCamera
1422	set _settings($this-xpan) $_view(xpan)
1423	set _settings($this-ypan) $_view(ypan)
1424	}
1425	if { $option == "release" } {
1426	$itk_component(3dview) configure -cursor ""
1427	}
1428	}
1429
1430
1431	# ----------------------------------------------------------------------
1432	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1433	#
1434	# Called when the user clicks on the record, stop or play buttons
1435	# for flow visualization.
1436	# ----------------------------------------------------------------------
1437	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1438	switch -- $option {
1439	movie {
1440	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1441	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1442	}
1443	set action [lindex $args 0]
1444	set op [lindex $args 1]
1445	if {$op == ""} { set op "on" }
1446
1447	set current [State $action]
1448	if {$op == "toggle"} {
1449	if {$current == "on"} {
1450	set op "off"
1451	} else {
1452	set op "on"
1453	}
1454	}
1455	set cmds ""
1456	switch -- $action {
1457	record {
1458	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1459	$itk_component(rewind) configure -relief sunken
1460	$itk_component(stop) configure -relief raised
1461	$itk_component(play) configure -relief raised
1462	set inner $itk_component(settingsFrame)
1463	set frames [$inner.framecnt value]
1464	set _settings(nsteps) $frames
1465	set cmds "flow capture $frames"
1466	SendCmd $cmds
1467	}
1468	}
1469	stop {
1470	if { [$itk_component(stop) cget -relief] != "sunken" } {
1471	$itk_component(rewind) configure -relief raised
1472	$itk_component(stop) configure -relief sunken
1473	$itk_component(play) configure -relief raised
1474	_pause
1475	set cmds "flow reset"
1476	SendCmd $cmds
1477	}
1478	}
1479	play {
1480	if { [$itk_component(play) cget -relief] != "sunken" } {
1481	$itk_component(rewind) configure -relief raised
1482	$itk_component(stop) configure -relief raised
1483	$itk_component(play) configure \
1484	-image [Rappture::icon flow-pause] \
1485	-relief sunken
1486	bind $itk_component(play) <ButtonPress> \
1487	[itcl::code $this _pause]
1488	flow next
1489	}
1490	}
1491	default {
1492	error "bad option \"$option\": should be one of record\|stop\|play"
1493	}
1494
1495	}
1496	}
1497	default {
1498	error "bad option \"$option\": should be movie"
1499	}
1500	}
1501	}
1502
1503	# ----------------------------------------------------------------------
1504	# USAGE: Play
1505	#
1506	# ----------------------------------------------------------------------
1507	itcl::body Rappture::FlowvisViewer::Play {} {
1508	SendCmd "flow next"
1509	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1510	$_dispatcher event -after $delay !play
1511	}
1512
1513	# ----------------------------------------------------------------------
1514	# USAGE: Pause
1515	#
1516	# Invoked when the user hits the "pause" button to stop playing the
1517	# current sequence of frames as a movie.
1518	# ----------------------------------------------------------------------
1519	itcl::body Rappture::FlowvisViewer::Pause {} {
1520	$_dispatcher cancel !play
1521
1522	# Toggle the button to "play" mode
1523	$itk_component(play) configure \
1524	-image [Rappture::icon flow-start] \
1525	-relief raised
1526	bind $itk_component(play) <ButtonPress> \
1527	[itcl::code $this Flow movie play toggle]
1528	}
1529
1530	# ----------------------------------------------------------------------
1531	# USAGE: InitSettings <what> ?<value>?
1532	#
1533	# Used internally to update rendering settings whenever parameters
1534	# change in the popup settings panel. Sends the new settings off
1535	# to the back end.
1536	# ----------------------------------------------------------------------
1537	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1538	foreach arg $args {
1539	AdjustSetting $arg
1540	}
1541	}
1542
1543	# ----------------------------------------------------------------------
1544	# USAGE: AdjustSetting <what> ?<value>?
1545	#
1546	# Used internally to update rendering settings whenever parameters
1547	# change in the popup settings panel. Sends the new settings off
1548	# to the back end.
1549	# ----------------------------------------------------------------------
1550	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1551	switch -- $what {
1552	colormap {
1553	set color [$itk_component(colormap) value]
1554	set _settings(colormap) $color
1555	#ResetColormap $color
1556	}
1557	light {
1558	if { $_first != "" } {
1559	set comp [lindex [$_first components] 0]
1560	set tag $_first-$comp
1561	set diffuse [expr {0.01*$_settings($this-light)}]
1562	set ambient [expr {1.0 - $diffuse}]
1563	set specularLevel 0.3
1564	set specularExp 90.0
1565	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1566	}
1567	}
1568	light2side {
1569	if { $_first != "" } {
1570	set comp [lindex [$_first components] 0]
1571	set tag $_first-$comp
1572	set val $_settings($this-light2side)
1573	SendCmd "$tag configure -light2side $val"
1574	}
1575	}
1576	transp {
1577	if { $_first != "" } {
1578	set comp [lindex [$_first components] 0]
1579	set tag $_first-$comp
1580	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1581	SendCmd "$tag configure -opacity $opacity"
1582	}
1583	}
1584	opacity {
1585	if { $_first != "" && $_activeTf != "" } {
1586	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1587	set tf $_activeTf
1588	set _settings($this-$tf-opacity) $opacity
1589	updateTransferFunctions
1590	}
1591	}
1592
1593	thickness {
1594	if { $_first != "" && $_activeTf != "" } {
1595	set val $_settings($this-thickness)
1596	# Scale values between 0.00001 and 0.01000
1597	set sval [expr {0.0001*double($val)}]
1598	set tf $_activeTf
1599	set _settings($this-$tf-thickness) $sval
1600	updateTransferFunctions
1601	}
1602	}
1603	"outline" {
1604	if { $_first != "" } {
1605	set comp [lindex [$_first components] 0]
1606	set tag $_first-$comp
1607	SendCmd "$tag configure -outline $_settings($this-outline)"
1608	}
1609	}
1610	"isosurface" {
1611	if { [isconnected] } {
1612	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1613	}
1614	}
1615	"grid" {
1616	if { [isconnected] } {
1617	SendCmd "grid visible $_settings($this-grid)"
1618	}
1619	}
1620	"axes" {
1621	if { [isconnected] } {
1622	SendCmd "axis visible $_settings($this-axes)"
1623	}
1624	}
1625	"legend" {
1626	if { $_settings($this-legend) } {
1627	blt::table $itk_component(plotarea) \
1628	0,0 $itk_component(3dview) -fill both \
1629	1,0 $itk_component(legend) -fill x
1630	blt::table configure $itk_component(plotarea) r1 -resize none
1631	} else {
1632	blt::table forget $itk_component(legend)
1633	}
1634	}
1635	"volume" {
1636	if { $_first != "" } {
1637	set comp [lindex [$_first components] 0]
1638	set tag $_first-$comp
1639	SendCmd "$tag configure -volume $_settings($this-volume)"
1640	}
1641	}
1642	"xcutplane" - "ycutplane" - "zcutplane" {
1643	set axis [string range $what 0 0]
1644	set bool $_settings($this-$what)
1645	if { [isconnected] } {
1646	set vols [CurrentVolumeIds -cutplanes]
1647	SendCmd "cutplane state $bool $axis $vols"
1648	}
1649	if { $bool } {
1650	$itk_component(${axis}CutScale) configure -state normal \
1651	-troughcolor white
1652	} else {
1653	$itk_component(${axis}CutScale) configure -state disabled \
1654	-troughcolor grey82
1655	}
1656	}
1657	default {
1658	error "don't know how to fix $what"
1659	}
1660	}
1661	}
1662
1663	# ----------------------------------------------------------------------
1664	# USAGE: ResizeLegend
1665	#
1666	# Used internally to update the legend area whenever it changes size
1667	# or when the field changes. Asks the server to send a new legend
1668	# for the current field.
1669	# ----------------------------------------------------------------------
1670	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1671	set _resizeLegendPending 0
1672	set lineht [font metrics $itk_option(-font) -linespace]
1673	set w [expr {$_width-20}]
1674	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1675
1676	if { $_first == "" } {
1677	return
1678	}
1679	set comp [lindex [$_first components] 0]
1680	set tag $_first-$comp
1681	#set _activeTf [lindex $_obj2style($tag) 0]
1682	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1683	#SendCmd "legend $_activeTf $w $h"
1684	SendCmd "$tag legend $w $h"
1685	} else {
1686	# Can't do this as this will remove the items associated with the
1687	# isomarkers.
1688
1689	#$itk_component(legend) delete all
1690	}
1691	}
1692
1693	#
1694	# NameTransferFunc --
1695	#
1696	# Creates a transfer function name based on the <style> settings in the
1697	# library run.xml file. This placeholder will be used later to create
1698	# and send the actual transfer function once the data info has been sent
1699	# to us by the render server. [We won't know the volume limits until the
1700	# server parses the 3D data and sends back the limits via ReceiveData.]
1701	#
1702	# FIXME: The current way we generate transfer-function names completely
1703	# ignores the -markers option. The problem is that we are forced
1704	# to compute the name from an increasing complex set of values:
1705	# color, levels, marker, opacity. I think we're stuck doing it
1706	# now.
1707	#
1708	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj cname } {
1709	array set styles {
1710	-color BCGYR
1711	-levels 6
1712	-light 40
1713	-opacity 1.0
1714	-transp 50
1715	}
1716	array set styles [lindex [$dataobj components -style $cname] 0]
1717	set _settings($this-light) $styles(-light)
1718	set _settings($this-transp) $styles(-transp)
1719	set _settings($this-opacity) [expr $styles(-opacity) * 100]
1720	set _obj2style($dataobj-$cname) $cname
1721	lappend _style2objs($cname) $dataobj $cname
1722	return $cname
1723	}
1724
1725	#
1726	# ComputeTransferFunc --
1727	#
1728	# Computes and sends the transfer function to the render server. It's
1729	# assumed that the volume data limits are known and that the global
1730	# transfer-functions slider values have be setup. Both parts are
1731	# needed to compute the relative value (location) of the marker, and
1732	# the alpha map of the transfer function.
1733	#
1734	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1735	array set styles {
1736	-color BCGYR
1737	-levels 6
1738	-opacity 1.0
1739	-light 40
1740	-transp 50
1741	}
1742	set dataobj ""; set comp ""
1743	foreach {dataobj comp} $_style2objs($tf) break
1744	if { $dataobj == "" } {
1745	return 0
1746	}
1747	array set styles [lindex [$dataobj components -style $comp] 0]
1748
1749
1750	# We have to parse the style attributes for a volume using this
1751	# transfer-function once. This sets up the initial isomarkers for the
1752	# transfer function. The user may add/delete markers, so we have to
1753	# maintain a list of markers for each transfer-function. We use the one
1754	# of the volumes (the first in the list) using the transfer-function as a
1755	# reference.
1756	#
1757	# FIXME: The current way we generate transfer-function names completely
1758	# ignores the -markers option. The problem is that we are forced
1759	# to compute the name from an increasing complex set of values:
1760	# color, levels, marker, opacity. I think the cow's out of the
1761	# barn on this one.
1762
1763	if { ![info exists _isomarkers($tf)] } {
1764	# Have to defer creation of isomarkers until we have data limits
1765	if { [info exists styles(-markers)] &&
1766	[llength $styles(-markers)] > 0 } {
1767	ParseMarkersOption $tf $styles(-markers)
1768	} else {
1769	ParseLevelsOption $tf $styles(-levels)
1770	}
1771	}
1772	if { [info exists styles(-nonuniformcolors)] } {
1773	foreach { value color } $styles(-nonuniformcolors) {
1774	append cmap "$value [Color2RGB $color] "
1775	}
1776	} else {
1777	set cmap [ColorsToColormap $styles(-color)]
1778	}
1779	set tag $this-$tf
1780	if { ![info exists _settings($tag-opacity)] } {
1781	set _settings($tag-opacity) $styles(-opacity)
1782	}
1783	set max 1.0 ;#$_settings($tag-opacity)
1784
1785	set isovalues {}
1786	foreach m $_isomarkers($tf) {
1787	lappend isovalues [$m relval]
1788	}
1789	# Sort the isovalues
1790	set isovalues [lsort -real $isovalues]
1791
1792	if { ![info exists _settings($tag-thickness)]} {
1793	set _settings($tag-thickness) 0.005
1794	}
1795	set delta $_settings($tag-thickness)
1796
1797	set first [lindex $isovalues 0]
1798	set last [lindex $isovalues end]
1799	set wmap ""
1800	if { $first == "" \|\| $first != 0.0 } {
1801	lappend wmap 0.0 0.0
1802	}
1803	foreach x $isovalues {
1804	set x1 [expr {$x-$delta-0.00001}]
1805	set x2 [expr {$x-$delta}]
1806	set x3 [expr {$x+$delta}]
1807	set x4 [expr {$x+$delta+0.00001}]
1808	if { $x1 < 0.0 } {
1809	set x1 0.0
1810	} elseif { $x1 > 1.0 } {
1811	set x1 1.0
1812	}
1813	if { $x2 < 0.0 } {
1814	set x2 0.0
1815	} elseif { $x2 > 1.0 } {
1816	set x2 1.0
1817	}
1818	if { $x3 < 0.0 } {
1819	set x3 0.0
1820	} elseif { $x3 > 1.0 } {
1821	set x3 1.0
1822	}
1823	if { $x4 < 0.0 } {
1824	set x4 0.0
1825	} elseif { $x4 > 1.0 } {
1826	set x4 1.0
1827	}
1828	# add spikes in the middle
1829	lappend wmap $x1 0.0
1830	lappend wmap $x2 $max
1831	lappend wmap $x3 $max
1832	lappend wmap $x4 0.0
1833	}
1834	if { $last == "" \|\| $last != 1.0 } {
1835	lappend wmap 1.0 0.0
1836	}
1837	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1838	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1839	}
1840
1841	# ----------------------------------------------------------------------
1842	# CONFIGURATION OPTION: -plotbackground
1843	# ----------------------------------------------------------------------
1844	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1845	if { [isconnected] } {
1846	set color $itk_option(-plotbackground)
1847	set rgb [Color2RGB $color]
1848	SendCmd "screen bgcolor $rgb"
1849	$itk_component(legend) configure -background $color
1850	}
1851	}
1852
1853	# ----------------------------------------------------------------------
1854	# CONFIGURATION OPTION: -plotforeground
1855	# ----------------------------------------------------------------------
1856	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1857	if { [isconnected] } {
1858	set color $itk_option(-plotforeground)
1859	set rgb [Color2RGB $color]
1860	SendCmd "volume outline color $rgb"
1861	SendCmd "grid axiscolor $rgb"
1862	SendCmd "grid linecolor $rgb"
1863	$itk_component(legend) itemconfigure labels -fill $color
1864	$itk_component(legend) itemconfigure limits -fill $color
1865	}
1866	}
1867
1868	# ----------------------------------------------------------------------
1869	# CONFIGURATION OPTION: -plotoutline
1870	# ----------------------------------------------------------------------
1871	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1872	# Must check if we are connected because this routine is called from the
1873	# class body when the -plotoutline itk_option is defined. At that point
1874	# the FlowvisViewer class constructor hasn't been called, so we can't
1875	# start sending commands to visualization server.
1876	if { [isconnected] } {
1877	if {"" == $itk_option(-plotoutline)} {
1878	SendCmd "volume outline state off"
1879	} else {
1880	SendCmd "volume outline state on"
1881	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1882	}
1883	}
1884	}
1885
1886	#
1887	# The -levels option takes a single value that represents the number
1888	# of evenly distributed markers based on the current data range. Each
1889	# marker is a relative value from 0.0 to 1.0.
1890	#
1891	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1892	set c $itk_component(legend)
1893	regsub -all "," $levels " " levels
1894	if {[string is int $levels]} {
1895	for {set i 1} { $i <= $levels } {incr i} {
1896	set x [expr {double($i)/($levels+1)}]
1897	set m [Rappture::IsoMarker \#auto $c $this $tf]
1898	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1899	$m relval $x
1900	lappend _isomarkers($tf) $m
1901	}
1902	} else {
1903	foreach x $levels {
1904	set m [Rappture::IsoMarker \#auto $c $this $tf]
1905	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1906	$m relval $x
1907	lappend _isomarkers($tf) $m
1908	}
1909	}
1910	}
1911
1912	#
1913	# The -markers option takes a list of zero or more values (the values
1914	# may be separated either by spaces or commas) that have the following
1915	# format:
1916	#
1917	# N% Percent of current total data range. Converted to
1918	# to a relative value between 0.0 and 1.0.
1919	# N Absolute value of marker. If the marker is outside of
1920	# the current range, it will be displayed on the outer
1921	# edge of the legends, but it range it represents will
1922	# not be seen.
1923	#
1924	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1925	set c $itk_component(legend)
1926	regsub -all "," $markers " " markers
1927	foreach marker $markers {
1928	set n [scan $marker "%g%s" value suffix]
1929	if { $n == 2 && $suffix == "%" } {
1930	# ${n}% : Set relative value.
1931	set value [expr {$value * 0.01}]
1932	set m [Rappture::IsoMarker \#auto $c $this $tf]
1933	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1934	$m relval $value
1935	lappend _isomarkers($tf) $m
1936	} else {
1937	# ${n} : Set absolute value.
1938	set m [Rappture::IsoMarker \#auto $c $this $tf]
1939	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1940	$m absval $value
1941	lappend _isomarkers($tf) $m
1942	}
1943	}
1944	}
1945
1946	# ----------------------------------------------------------------------
1947	# USAGE: UndateTransferFuncs
1948	# ----------------------------------------------------------------------
1949	itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
1950	$_dispatcher event -after 100 !send_transfunc
1951	}
1952
1953	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
1954	if { $_activeTf == "" } {
1955	error "active transfer function isn't set"
1956	}
1957	set tf $_activeTf
1958	set c $itk_component(legend)
1959	set m [Rappture::IsoMarker \#auto $c $this $tf]
1960	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1961	set w [winfo width $c]
1962	$m relval [expr {double($x-10)/($w-20)}]
1963	lappend _isomarkers($tf) $m
1964	updateTransferFunctions
1965	return 1
1966	}
1967
1968	itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
1969	set tf [$marker transferfunc]
1970	set bool 0
1971	if { [info exists _isomarkers($tf)] } {
1972	set list {}
1973	set marker [namespace tail $marker]
1974	foreach m $_isomarkers($tf) {
1975	set sx [$m screenpos]
1976	if { $m != $marker } {
1977	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1978	$marker relval [$m relval]
1979	itcl::delete object $m
1980	bell
1981	set bool 1
1982	continue
1983	}
1984	}
1985	lappend list $m
1986	}
1987	set _isomarkers($tf) $list
1988	updateTransferFunctions
1989	}
1990	return $bool
1991	}
1992
1993	itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
1994	set tf [$marker transferfunc]
1995	if { [info exists _isomarkers($tf)] } {
1996	set marker [namespace tail $marker]
1997	foreach m $_isomarkers($tf) {
1998	set sx [$m screenpos]
1999	if { $m != $marker } {
2000	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2001	$m activate $bool
2002	}
2003	}
2004	}
2005	return ""
2006	}
2007
2008	itcl::body Rappture::FlowvisViewer::limits { cname } {
2009	set _limits(v) [list 0.0 1.0]
2010	if { ![info exists _style2objs($cname)] } {
2011	puts stderr "no style2objs for $cname cname=($cname)"
2012	return [array get _limits]
2013	}
2014	set min ""; set max ""
2015	foreach tag [GetDatasetsWithComponent $cname] {
2016	if { ![info exists _serverObjs($tag)] } {
2017	puts stderr "$tag not in serverObjs?"
2018	continue
2019	}
2020	if { ![info exists _limits($tag)] } {
2021	puts stderr "$tag no min?"
2022	continue
2023	}
2024	foreach {vmin vmax} $_limits($tag) break
2025	if { $min == "" \|\| $min > $vmin } {
2026	set min $vmin
2027	}
2028	if { $max == "" \|\| $max < $vmax } {
2029	set max $vmax
2030	}
2031	}
2032	if { $min != "" && $max != "" } {
2033	set _limits(v) [list $min $max]
2034	set _limits($cname) [list $min $max]
2035	}
2036	return $_limits($cname)
2037	}
2038
2039	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2040	foreach { key value } {
2041	grid 0
2042	axes 0
2043	outline 1
2044	volume 1
2045	legend 1
2046	particles 1
2047	lic 1
2048	} {
2049	set _settings($this-$key) $value
2050	}
2051
2052	set fg [option get $itk_component(hull) font Font]
2053	#set bfg [option get $itk_component(hull) boldFont Font]
2054
2055	set inner [$itk_component(main) insert end \
2056	-title "View Settings" \
2057	-icon [Rappture::icon wrench]]
2058	$inner configure -borderwidth 4
2059
2060	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2061	checkbutton $inner.isosurface \
2062	-text "Isosurface shading" \
2063	-variable [itcl::scope _settings($this-isosurface)] \
2064	-command [itcl::code $this AdjustSetting isosurface] \
2065	-font "Arial 9"
2066
2067	checkbutton $inner.axes \
2068	-text "Axes" \
2069	-variable [itcl::scope _settings($this-axes)] \
2070	-command [itcl::code $this AdjustSetting axes] \
2071	-font "Arial 9"
2072
2073	checkbutton $inner.grid \
2074	-text "Grid" \
2075	-variable [itcl::scope _settings($this-grid)] \
2076	-command [itcl::code $this AdjustSetting grid] \
2077	-font "Arial 9"
2078
2079	checkbutton $inner.outline \
2080	-text "Outline" \
2081	-variable [itcl::scope _settings($this-outline)] \
2082	-command [itcl::code $this AdjustSetting outline] \
2083	-font "Arial 9"
2084
2085	checkbutton $inner.legend \
2086	-text "Legend" \
2087	-variable [itcl::scope _settings($this-legend)] \
2088	-command [itcl::code $this AdjustSetting legend] \
2089	-font "Arial 9"
2090
2091	checkbutton $inner.volume \
2092	-text "Volume" \
2093	-variable [itcl::scope _settings($this-volume)] \
2094	-command [itcl::code $this AdjustSetting volume] \
2095	-font "Arial 9"
2096
2097	checkbutton $inner.particles \
2098	-text "Particles" \
2099	-variable [itcl::scope _settings($this-particles)] \
2100	-command [itcl::code $this AdjustSetting particles] \
2101	-font "Arial 9"
2102
2103	checkbutton $inner.lic \
2104	-text "Lic" \
2105	-variable [itcl::scope _settings($this-lic)] \
2106	-command [itcl::code $this AdjustSetting lic] \
2107	-font "Arial 9"
2108
2109	frame $inner.frame
2110
2111	blt::table $inner \
2112	0,0 $inner.axes -cspan 2 -anchor w \
2113	1,0 $inner.grid -cspan 2 -anchor w \
2114	2,0 $inner.outline -cspan 2 -anchor w \
2115	3,0 $inner.volume -cspan 2 -anchor w \
2116	4,0 $inner.legend -cspan 2 -anchor w
2117
2118	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2119
2120	blt::table configure $inner r* -resize none
2121	blt::table configure $inner r5 -resize expand
2122	}
2123
2124	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2125	foreach { key value } {
2126	light2side 1
2127	light 40
2128	transp 50
2129	opacity 100
2130	thickness 350
2131	} {
2132	set _settings($this-$key) $value
2133	}
2134
2135	set inner [$itk_component(main) insert end \
2136	-title "Volume Settings" \
2137	-icon [Rappture::icon volume-on]]
2138	$inner configure -borderwidth 4
2139
2140	set fg [option get $itk_component(hull) font Font]
2141	#set bfg [option get $itk_component(hull) boldFont Font]
2142
2143	checkbutton $inner.vol -text "Show volume" -font $fg \
2144	-text "Volume" \
2145	-variable [itcl::scope _settings($this-volume)] \
2146	-command [itcl::code $this AdjustSetting volume] \
2147	-font "Arial 9"
2148
2149	label $inner.shading -text "Shading:" -font $fg
2150
2151	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2152	-variable [itcl::scope _settings($this-light2side)] \
2153	-command [itcl::code $this AdjustSetting light2side]
2154
2155	label $inner.dim -text "Glow" -font $fg
2156	::scale $inner.light -from 0 -to 100 -orient horizontal \
2157	-variable [itcl::scope _settings($this-light)] \
2158	-width 10 \
2159	-showvalue off -command [itcl::code $this AdjustSetting light]
2160	label $inner.bright -text "Surface" -font $fg
2161
2162	label $inner.fog -text "Clear" -font $fg
2163	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2164	-variable [itcl::scope _settings($this-transp)] \
2165	-width 10 \
2166	-showvalue off -command [itcl::code $this AdjustSetting transp]
2167	label $inner.plastic -text "Opaque" -font $fg
2168
2169	label $inner.clear -text "Clear" -font $fg
2170	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2171	-variable [itcl::scope _settings($this-opacity)] \
2172	-width 10 \
2173	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2174	label $inner.opaque -text "Opaque" -font $fg
2175
2176	label $inner.thin -text "Thin" -font $fg
2177	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2178	-variable [itcl::scope _settings($this-thickness)] \
2179	-width 10 \
2180	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2181	label $inner.thick -text "Thick" -font $fg
2182
2183	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2184	itk_component add colormap {
2185	Rappture::Combobox $inner.colormap -width 10 -editable no
2186	}
2187
2188	$inner.colormap choices insert end [GetColormapList -includeNone]
2189	$itk_component(colormap) value "BCGYR"
2190	bind $inner.colormap <<Value>> \
2191	[itcl::code $this AdjustSetting colormap]
2192
2193	blt::table $inner \
2194	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2195	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2196	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2197	3,0 $inner.dim -anchor e -pady 2 \
2198	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2199	3,3 $inner.bright -anchor w -pady 2 \
2200	4,0 $inner.fog -anchor e -pady 2 \
2201	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2202	4,3 $inner.plastic -anchor w -pady 2 \
2203	5,0 $inner.thin -anchor e -pady 2 \
2204	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2205	5,3 $inner.thick -anchor w -pady 2
2206
2207	blt::table configure $inner c0 c1 c3 r* -resize none
2208	blt::table configure $inner r6 -resize expand
2209	}
2210
2211	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2212	set inner [$itk_component(main) insert end \
2213	-title "Cutplane Settings" \
2214	-icon [Rappture::icon cutbutton]]
2215	$inner configure -borderwidth 4
2216
2217	# X-value slicer...
2218	itk_component add xCutButton {
2219	Rappture::PushButton $inner.xbutton \
2220	-onimage [Rappture::icon x-cutplane] \
2221	-offimage [Rappture::icon x-cutplane] \
2222	-command [itcl::code $this AdjustSetting xcutplane] \
2223	-variable [itcl::scope _settings($this-xcutplane)]
2224	}
2225	Rappture::Tooltip::for $itk_component(xCutButton) \
2226	"Toggle the X cut plane on/off"
2227
2228	itk_component add xCutScale {
2229	::scale $inner.xval -from 100 -to 0 \
2230	-width 10 -orient vertical -showvalue off \
2231	-borderwidth 1 -highlightthickness 0 \
2232	-command [itcl::code $this Slice move x] \
2233	-variable [itcl::scope _settings($this-xcutposition)]
2234	} {
2235	usual
2236	ignore -borderwidth -highlightthickness
2237	}
2238	# Set the default cutplane value before disabling the scale.
2239	$itk_component(xCutScale) set 50
2240	$itk_component(xCutScale) configure -state disabled
2241	Rappture::Tooltip::for $itk_component(xCutScale) \
2242	"@[itcl::code $this SlicerTip x]"
2243
2244	# Y-value slicer...
2245	itk_component add yCutButton {
2246	Rappture::PushButton $inner.ybutton \
2247	-onimage [Rappture::icon y-cutplane] \
2248	-offimage [Rappture::icon y-cutplane] \
2249	-command [itcl::code $this AdjustSetting ycutplane] \
2250	-variable [itcl::scope _settings($this-ycutplane)]
2251	}
2252	Rappture::Tooltip::for $itk_component(yCutButton) \
2253	"Toggle the Y cut plane on/off"
2254
2255	itk_component add yCutScale {
2256	::scale $inner.yval -from 100 -to 0 \
2257	-width 10 -orient vertical -showvalue off \
2258	-borderwidth 1 -highlightthickness 0 \
2259	-command [itcl::code $this Slice move y] \
2260	-variable [itcl::scope _settings($this-ycutposition)]
2261	} {
2262	usual
2263	ignore -borderwidth -highlightthickness
2264	}
2265	Rappture::Tooltip::for $itk_component(yCutScale) \
2266	"@[itcl::code $this SlicerTip y]"
2267	# Set the default cutplane value before disabling the scale.
2268	$itk_component(yCutScale) set 50
2269	$itk_component(yCutScale) configure -state disabled
2270
2271	# Z-value slicer...
2272	itk_component add zCutButton {
2273	Rappture::PushButton $inner.zbutton \
2274	-onimage [Rappture::icon z-cutplane] \
2275	-offimage [Rappture::icon z-cutplane] \
2276	-command [itcl::code $this AdjustSetting zcutplane] \
2277	-variable [itcl::scope _settings($this-zcutplane)]
2278	}
2279	Rappture::Tooltip::for $itk_component(zCutButton) \
2280	"Toggle the Z cut plane on/off"
2281
2282	itk_component add zCutScale {
2283	::scale $inner.zval -from 100 -to 0 \
2284	-width 10 -orient vertical -showvalue off \
2285	-borderwidth 1 -highlightthickness 0 \
2286	-command [itcl::code $this Slice move z] \
2287	-variable [itcl::scope _settings($this-zcutposition)]
2288	} {
2289	usual
2290	ignore -borderwidth -highlightthickness
2291	}
2292	$itk_component(zCutScale) set 50
2293	$itk_component(zCutScale) configure -state disabled
2294	#$itk_component(zCutScale) configure -state disabled
2295	Rappture::Tooltip::for $itk_component(zCutScale) \
2296	"@[itcl::code $this SlicerTip z]"
2297
2298	blt::table $inner \
2299	1,1 $itk_component(xCutButton) \
2300	1,2 $itk_component(yCutButton) \
2301	1,3 $itk_component(zCutButton) \
2302	0,1 $itk_component(xCutScale) \
2303	0,2 $itk_component(yCutScale) \
2304	0,3 $itk_component(zCutScale) \
2305
2306	blt::table configure $inner r0 r1 c* -resize none
2307	blt::table configure $inner r2 c4 -resize expand
2308	blt::table configure $inner c0 -width 2
2309	blt::table configure $inner c1 c2 c3 -padx 2
2310	}
2311
2312	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2313	set inner [$itk_component(main) insert end \
2314	-title "Camera Settings" \
2315	-icon [Rappture::icon camera]]
2316	$inner configure -borderwidth 4
2317
2318	label $inner.view_l -text "view" -font "Arial 9"
2319	set f [frame $inner.view]
2320	foreach side { front back left right top bottom } {
2321	button $f.$side -image [Rappture::icon view$side] \
2322	-command [itcl::code $this SetOrientation $side]
2323	Rappture::Tooltip::for $f.$side "Change the view to $side"
2324	pack $f.$side -side left
2325	}
2326
2327	blt::table $inner \
2328	0,0 $inner.view_l -anchor e -pady 2 \
2329	0,1 $inner.view -anchor w -pady 2
2330
2331	set row 1
2332	set labels { qw qx qy qz xpan ypan zoom }
2333	foreach tag $labels {
2334	label $inner.${tag}label -text $tag -font "Arial 9"
2335	entry $inner.${tag} -font "Arial 9" -bg white \
2336	-textvariable [itcl::scope _settings($this-$tag)]
2337	bind $inner.${tag} <KeyPress-Return> \
2338	[itcl::code $this camera set ${tag}]
2339	blt::table $inner \
2340	$row,0 $inner.${tag}label -anchor e -pady 2 \
2341	$row,1 $inner.${tag} -anchor w -pady 2
2342	blt::table configure $inner r$row -resize none
2343	incr row
2344	}
2345
2346	blt::table configure $inner c* r* -resize none
2347	blt::table configure $inner c2 -resize expand
2348	blt::table configure $inner r$row -resize expand
2349	}
2350
2351	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2352	set flowobj ""
2353	foreach key [array names _obj2flow] {
2354	set flowobj $_obj2flow($key)
2355	break
2356	}
2357	if { $flowobj == "" } {
2358	return
2359	}
2360	if { [winfo exists $w.frame] } {
2361	destroy $w.frame
2362	}
2363	set inner [frame $w.frame]
2364	blt::table $w \
2365	5,0 $inner -fill both -cspan 2 -anchor nw
2366	array set hints [$flowobj hints]
2367	checkbutton $inner.showstreams -text "Streams Plane" \
2368	-variable [itcl::scope _settings($this-streams)] \
2369	-command [itcl::code $this streams $key $hints(name)] \
2370	-font "Arial 9"
2371	Rappture::Tooltip::for $inner.showstreams $hints(description)
2372
2373	checkbutton $inner.showarrows -text "Arrows" \
2374	-variable [itcl::scope _settings($this-arrows)] \
2375	-command [itcl::code $this arrows $key $hints(name)] \
2376	-font "Arial 9"
2377
2378	label $inner.particles -text "Particles" -font "Arial 9 bold"
2379	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2380
2381	blt::table $inner \
2382	1,0 $inner.showstreams -anchor w \
2383	2,0 $inner.showarrows -anchor w
2384	blt::table configure $inner c0 c1 -resize none
2385	blt::table configure $inner c2 -resize expand
2386
2387	set row 3
2388	set particles [$flowobj particles]
2389	if { [llength $particles] > 0 } {
2390	blt::table $inner $row,0 $inner.particles -anchor w
2391	incr row
2392	}
2393	foreach part $particles {
2394	array unset info
2395	array set info $part
2396	set name $info(name)
2397	if { ![info exists _settings($this-particles-$name)] } {
2398	set _settings($this-particles-$name) $info(hide)
2399	}
2400	checkbutton $inner.part$row -text $info(label) \
2401	-variable [itcl::scope _settings($this-particles-$name)] \
2402	-onvalue 0 -offvalue 1 \
2403	-command [itcl::code $this particles $key $name] \
2404	-font "Arial 9"
2405	Rappture::Tooltip::for $inner.part$row $info(description)
2406	blt::table $inner $row,0 $inner.part$row -anchor w
2407	if { !$_settings($this-particles-$name) } {
2408	$inner.part$row select
2409	}
2410	incr row
2411	}
2412	set boxes [$flowobj boxes]
2413	if { [llength $boxes] > 0 } {
2414	blt::table $inner $row,0 $inner.boxes -anchor w
2415	incr row
2416	}
2417	foreach box $boxes {
2418	array unset info
2419	array set info $box
2420	set name $info(name)
2421	if { ![info exists _settings($this-box-$name)] } {
2422	set _settings($this-box-$name) $info(hide)
2423	}
2424	checkbutton $inner.box$row -text $info(label) \
2425	-variable [itcl::scope _settings($this-box-$name)] \
2426	-onvalue 0 -offvalue 1 \
2427	-command [itcl::code $this box $key $name] \
2428	-font "Arial 9"
2429	Rappture::Tooltip::for $inner.box$row $info(description)
2430	blt::table $inner $row,0 $inner.box$row -anchor w
2431	if { !$_settings($this-box-$name) } {
2432	$inner.box$row select
2433	}
2434	incr row
2435	}
2436	blt::table configure $inner r* -resize none
2437	blt::table configure $inner r$row -resize expand
2438	blt::table configure $inner c3 -resize expand
2439	event generate [winfo parent [winfo parent $w]] <Configure>
2440	}
2441
2442	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2443	set bool $_settings($this-particles-$name)
2444	SendCmd "$tag particles configure {$name} -hide $bool"
2445	}
2446
2447	itcl::body Rappture::FlowvisViewer::box { tag name } {
2448	set bool $_settings($this-box-$name)
2449	SendCmd "$tag box configure {$name} -hide $bool"
2450	}
2451
2452	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2453	set bool $_settings($this-streams)
2454	SendCmd "$tag configure -slice $bool"
2455	}
2456
2457	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2458	set bool $_settings($this-arrows)
2459	SendCmd "$tag configure -arrows $bool"
2460	}
2461
2462	# ----------------------------------------------------------------------
2463	# USAGE: Slice move x\|y\|z <newval>
2464	#
2465	# Called automatically when the user drags the slider to move the
2466	# cut plane that slices 3D data. Gets the current value from the
2467	# slider and moves the cut plane to the appropriate point in the
2468	# data set.
2469	# ----------------------------------------------------------------------
2470	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2471	switch -- $option {
2472	move {
2473	if {[llength $args] != 2} {
2474	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2475	}
2476	set axis [lindex $args 0]
2477	set newval [lindex $args 1]
2478	set newpos [expr {0.01*$newval}]
2479
2480	# show the current value in the readout
2481
2482	set ids [CurrentVolumeIds -cutplanes]
2483	SendCmd "cutplane position $newpos $axis $ids"
2484	}
2485	default {
2486	error "bad option \"$option\": should be axis, move, or volume"
2487	}
2488	}
2489	}
2490
2491	# ----------------------------------------------------------------------
2492	# USAGE: SlicerTip <axis>
2493	#
2494	# Used internally to generate a tooltip for the x/y/z slicer controls.
2495	# Returns a message that includes the current slicer value.
2496	# ----------------------------------------------------------------------
2497	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2498	set val [$itk_component(${axis}CutScale) get]
2499	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2500	}
2501
2502	itcl::body Rappture::FlowvisViewer::Resize {} {
2503	$_arcball resize $_width $_height
2504	SendCmd "screen size $_width $_height"
2505	set _resizePending 0
2506	}
2507
2508	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2509	set _width $w
2510	set _height $h
2511	$_arcball resize $w $h
2512	if { !$_resizePending } {
2513	$_dispatcher event -after 200 !resize
2514	set _resizePending 1
2515	}
2516	}
2517
2518	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2519	if { !$_resizeLegendPending } {
2520	$_dispatcher event -after 100 !legend
2521	set _resizeLegendPending 1
2522	}
2523	}
2524
2525	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2526	set _flow(goto) $nSteps
2527	if { !$_gotoPending } {
2528	$_dispatcher event -after 1000 !goto
2529	set _gotoPending 1
2530	}
2531	}
2532
2533	# camera --
2534	itcl::body Rappture::FlowvisViewer::camera {option args} {
2535	switch -- $option {
2536	"show" {
2537	puts [array get _view]
2538	}
2539	"set" {
2540	set who [lindex $args 0]
2541	set x $_settings($this-$who)
2542	set code [catch { string is double $x } result]
2543	if { $code != 0 \|\| !$result } {
2544	set _settings($this-$who) $_view($who)
2545	return
2546	}
2547	switch -- $who {
2548	"xpan" - "ypan" {
2549	set _view($who) $_settings($this-$who)
2550	PanCamera
2551	}
2552	"qx" - "qy" - "qz" - "qw" {
2553	set _view($who) $_settings($this-$who)
2554	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2555	$_arcball quaternion $q
2556	SendCmd "camera orient $q"
2557	}
2558	"zoom" {
2559	set _view($who) $_settings($this-$who)
2560	SendCmd "camera zoom $_view(zoom)"
2561	}
2562	}
2563	}
2564	}
2565	}
2566
2567	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2568	set tag "$dataobj-$comp"
2569	if { ![info exists _obj2flow($tag)] } {
2570	append cmd "flow add $tag\n"
2571	append cmd "$tag data follows $nbytes $extents\n"
2572	return $cmd
2573	}
2574	set flowobj $_obj2flow($tag)
2575	if { $flowobj == "" } {
2576	puts stderr "no flowobj"
2577	return ""
2578	}
2579	set cmd {}
2580	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2581	array set info [$flowobj hints]
2582	set _settings($this-volume) $info(volume)
2583	set _settings($this-outline) $info(outline)
2584	set _settings($this-arrows) $info(arrows)
2585	set _settings($this-duration) $info(duration)
2586	$itk_component(speed) value $info(speed)
2587	append cmd "flow add $tag"
2588	append cmd " -position $info(position)"
2589	append cmd " -axis $info(axis)"
2590	append cmd " -volume $info(volume)"
2591	append cmd " -outline $info(outline)"
2592	append cmd " -slice $info(streams)"
2593	append cmd " -arrows $info(arrows)\n"
2594	foreach part [$flowobj particles] {
2595	array unset info
2596	array set info $part
2597	set color [Color2RGB $info(color)]
2598	append cmd "$tag particles add $info(name)"
2599	append cmd " -position $info(position)"
2600	append cmd " -hide $info(hide)"
2601	append cmd " -axis $info(axis)"
2602	append cmd " -color {$color}"
2603	append cmd " -size $info(size)\n"
2604	}
2605	foreach box [$flowobj boxes] {
2606	array unset info
2607	set info(corner1) ""
2608	set info(corner2) ""
2609	array set info $box
2610	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2611	continue
2612	}
2613	set color [Color2RGB $info(color)]
2614	append cmd "$tag box add $info(name)"
2615	append cmd " -color {$color}"
2616	append cmd " -hide $info(hide)"
2617	append cmd " -linewidth $info(linewidth) "
2618	append cmd " -corner1 {$info(corner1)} "
2619	append cmd " -corner2 {$info(corner2)}\n"
2620	}
2621	append cmd "$tag data follows $nbytes $extents\n"
2622	return $cmd
2623	}
2624
2625
2626	#
2627	# flow --
2628	#
2629	# Called when the user clicks on the stop or play buttons
2630	# for flow visualization.
2631	#
2632	# $this flow play
2633	# $this flow stop
2634	# $this flow toggle
2635	# $this flow reset
2636	# $this flow pause
2637	# $this flow next
2638	#
2639	itcl::body Rappture::FlowvisViewer::flow { args } {
2640	set option [lindex $args 0]
2641	switch -- $option {
2642	"goto2" {
2643	puts stderr "actually sending \"flow goto $_flow(goto)\""
2644	SendCmd "flow goto $_flow(goto)"
2645	set _gotoPending 0
2646	}
2647	"goto" {
2648	puts stderr "flow goto to $_settings($this-currenttime)"
2649	# Figure out how many steps to the current time based upon
2650	# the speed and duration.
2651	set current $_settings($this-currenttime)
2652	set speed [$itk_component(speed) value]
2653	set time [str2millisecs $_settings($this-duration)]
2654	$itk_component(dial) configure -max $time
2655	set delay [expr int(round(500.0/$speed))]
2656	set timePerStep [expr {double($time) / $delay}]
2657	set nSteps [expr {int(ceil($current/$timePerStep))}]
2658	EventuallyGoto $nSteps
2659	}
2660	"speed" {
2661	set speed [$itk_component(speed) value]
2662	set _flow(delay) [expr int(round(500.0/$speed))]
2663	}
2664	"duration" {
2665	set max [str2millisecs $_settings($this-duration)]
2666	if { $max < 0 } {
2667	bell
2668	return
2669	}
2670	set _flow(duration) $max
2671	set _settings($this-duration) [millisecs2str $max]
2672	$itk_component(dial) configure -max $max
2673	}
2674	"off" {
2675	set _flow(state) 0
2676	$_dispatcher cancel !play
2677	$itk_component(play) deselect
2678	}
2679	"on" {
2680	flow speed
2681	flow duration
2682	set _flow(state) 1
2683	set _settings($this-currenttime) 0
2684	$itk_component(play) select
2685	}
2686	"stop" {
2687	if { $_flow(state) } {
2688	flow off
2689	flow reset
2690	}
2691	}
2692	"pause" {
2693	if { $_flow(state) } {
2694	flow off
2695	}
2696	}
2697	"play" {
2698	# If the flow is currently off, then restart it.
2699	if { !$_flow(state) } {
2700	flow on
2701	# If we're at the end of the flow, reset the flow.
2702	set _settings($this-currenttime) \
2703	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2704	if { $_settings($this-currenttime) >= $_flow(duration) } {
2705	set _settings($this-step) 1
2706	SendCmd "flow reset"
2707	}
2708	flow next
2709	}
2710	}
2711	"toggle" {
2712	if { $_settings($this-play) } {
2713	flow play
2714	} else {
2715	flow pause
2716	}
2717	}
2718	"reset" {
2719	set _settings($this-currenttime) 0
2720	SendCmd "flow reset"
2721	}
2722	"next" {
2723	if { ![winfo viewable $itk_component(3dview)] } {
2724	flow stop
2725	return
2726	}
2727	set _settings($this-currenttime) \
2728	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2729	if { $_settings($this-currenttime) >= $_flow(duration) } {
2730	if { !$_settings($this-loop) } {
2731	flow off
2732	return
2733	}
2734	flow reset
2735	} else {
2736	SendCmd "flow next"
2737	}
2738	$_dispatcher event -after $_flow(delay) !play
2739	}
2740	default {
2741	error "bad option \"$option\": should be play, stop, toggle, or reset."
2742	}
2743	}
2744	}
2745
2746	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2747	switch -- $option {
2748	"start" {
2749	$_dispatcher dispatch $this !waiticon \
2750	"[itcl::code $this WaitIcon "next" $widget] ; list"
2751	set _icon 0
2752	$widget configure -image [Rappture::icon bigroller${_icon}]
2753	$_dispatcher event -after 100 !waiticon
2754	}
2755	"next" {
2756	incr _icon
2757	if { $_icon >= 8 } {
2758	set _icon 0
2759	}
2760	$widget configure -image [Rappture::icon bigroller${_icon}]
2761	$_dispatcher event -after 100 !waiticon
2762	}
2763	"stop" {
2764	$_dispatcher cancel !waiticon
2765	}
2766	}
2767	}
2768
2769	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2770	set token "print[incr _nextToken]"
2771	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2772	set $var ""
2773
2774	# Setup an automatic timeout procedure.
2775	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2776
2777	set popup .flowvisviewerprint
2778	if {![winfo exists $popup]} {
2779	Rappture::Balloon $popup -title "Generating file..."
2780	set inner [$popup component inner]
2781	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2782	label $inner.please -text "This may take a minute." -font "Arial 10"
2783	label $inner.icon -image [Rappture::icon bigroller0]
2784	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2785	-command [list set $var ""]
2786	blt::table $inner \
2787	0,0 $inner.title -cspan 2 \
2788	1,0 $inner.please -anchor w \
2789	1,1 $inner.icon -anchor e \
2790	2,0 $inner.cancel -cspan 2
2791	blt::table configure $inner r0 -pady 4
2792	blt::table configure $inner r2 -pady 4
2793	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2794	} else {
2795	set inner [$popup component inner]
2796	}
2797
2798	$_dispatcher event -after 60000 !pngtimeout
2799	WaitIcon start $inner.icon
2800	grab set $inner
2801	focus $inner.cancel
2802
2803	SendCmd "print $token $width $height"
2804
2805	$popup activate $widget below
2806	update idletasks
2807	update
2808	# We wait here for either
2809	# 1) the png to be delivered or
2810	# 2) timeout or
2811	# 3) user cancels the operation.
2812	tkwait variable $var
2813
2814	# Clean up.
2815	$_dispatcher cancel !pngtimeout
2816	WaitIcon stop $inner.icon
2817	grab release $inner
2818	$popup deactivate
2819	update
2820
2821	if { $_hardcopy($this-$token) != "" } {
2822	return [list .png $_hardcopy($this-$token)]
2823	}
2824	return ""
2825	}
2826
2827	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2828	set token "movie[incr _nextToken]"
2829	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2830	set $var ""
2831
2832	# Setup an automatic timeout procedure.
2833	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2834	set popup .flowvisviewermovie
2835	if {![winfo exists $popup]} {
2836	Rappture::Balloon $popup -title "Generating movie..."
2837	set inner [$popup component inner]
2838	label $inner.title -text "Generating movie for download" \
2839	-font "Arial 10 bold"
2840	label $inner.please -text "This may take a few minutes." \
2841	-font "Arial 10"
2842	label $inner.icon -image [Rappture::icon bigroller0]
2843	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2844	-command [list set $var ""]
2845	blt::table $inner \
2846	0,0 $inner.title -cspan 2 \
2847	1,0 $inner.please -anchor w \
2848	1,1 $inner.icon -anchor e \
2849	2,0 $inner.cancel -cspan 2
2850	blt::table configure $inner r0 -pady 4
2851	blt::table configure $inner r2 -pady 4
2852	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2853	} else {
2854	set inner [$popup component inner]
2855	}
2856	update
2857	# Timeout is set to 10 minutes.
2858	$_dispatcher event -after 600000 !movietimeout
2859	WaitIcon start $inner.icon
2860	grab set $inner
2861	focus $inner.cancel
2862
2863	flow duration
2864	flow speed
2865	set nframes [expr round($_flow(duration) / $_flow(delay))]
2866	set framerate [expr 1000.0 / $_flow(delay)]
2867
2868	# These are specific to MPEG1 video generation
2869	set framerate 25.0
2870	set bitrate 6.0e+6
2871
2872	set start [clock seconds]
2873	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2874
2875	$popup activate $widget below
2876	update idletasks
2877	update
2878	# We wait here until
2879	# 1. the movie is delivered or
2880	# 2. we've timed out or
2881	# 3. the user has canceled the operation.b
2882	tkwait variable $var
2883
2884	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2885
2886	# Clean up.
2887	$_dispatcher cancel !movietimeout
2888	WaitIcon stop $inner.icon
2889	grab release $inner
2890	$popup deactivate
2891	destroy $popup
2892	update
2893
2894	# This will both cancel the movie generation (if it hasn't already
2895	# completed) and reset the flow.
2896	SendCmd "flow reset"
2897	if { $_hardcopy($this-$token) != "" } {
2898	return [list .mpg $_hardcopy($this-$token)]
2899	}
2900	return ""
2901	}
2902
2903	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2904	set parts [split $value :]
2905	set secs 0
2906	set mins 0
2907	if { [llength $parts] == 1 } {
2908	scan [lindex $parts 0] "%d" secs
2909	} else {
2910	scan [lindex $parts 1] "%d" secs
2911	scan [lindex $parts 0] "%d" mins
2912	}
2913	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2914	if { $ms > 600000.0 } {
2915	set ms 600000.0
2916	}
2917	if { $ms == 0.0 } {
2918	set ms 60000.0
2919	}
2920	return $ms
2921	}
2922
2923	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2924	set min [expr floor($value / 60000.0)]
2925	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2926	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2927	}
2928
2929	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2930	array set positions {
2931	front "1 0 0 0"
2932	back "0 0 1 0"
2933	left "0.707107 0 -0.707107 0"
2934	right "0.707107 0 0.707107 0"
2935	top "0.707107 -0.707107 0 0"
2936	bottom "0.707107 0.707107 0 0"
2937	}
2938	foreach name { qw qx qy qz } value $positions($side) {
2939	set _view($name) $value
2940	}
2941	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2942	$_arcball quaternion $q
2943	SendCmd "camera orient $q"
2944	SendCmd "camera reset"
2945	set _view(xpan) 0.0
2946	set _view(ypan) 0.0
2947	set _view(zoom) 1.0
2948	set _settings($this-xpan) $_view(xpan)
2949	set _settings($this-ypan) $_view(ypan)
2950	set _settings($this-zoom) $_view(zoom)
2951	}
2952
2953	# Reset global settings from dataset's settings.
2954	itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
2955	$itk_component(volcomponents) choices delete 0 end
2956	foreach name $_componentsList {
2957	$itk_component(volcomponents) choices insert end $name $name
2958	}
2959	set _current [lindex $_componentsList 0]
2960	$itk_component(volcomponents) value $_current
2961	}
2962
2963	# Reset global settings from dataset's settings.
2964	itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
2965	if { ![info exists _volcomponents($cname)] } {
2966	return ""
2967	}
2968	set list ""
2969	foreach tag $_volcomponents($cname) {
2970	if { ![info exists _serverObjs($tag)] } {
2971	continue
2972	}
2973	lappend list $tag
2974	}
2975	return $list
2976	}

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