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source: trunk/gui/scripts/flowvisviewer.tcl @ 2136

Last change on this file since 2136 was 1929, checked in by gah, 14 years ago

File size: 101.3 KB

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1	# ----------------------------------------------------------------------
2	# COMPONENT: flowvisviewer - 3D flow rendering
3	#
4	#
5	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
6	# It connects to the Flowvis server running on a rendering farm, transmits
7	# data, and displays the results.
8	#
9	# ======================================================================
10	# AUTHOR: Michael McLennan, Purdue University
11	# Copyright (c) 2004-2005 Purdue Research Foundation
12	#
13	# See the file "license.terms" for information on usage and redistribution of
14	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
15	# ======================================================================
16	package require Itk
17	package require BLT
18	package require Img
19
20	option add *FlowvisViewer.width 5i widgetDefault
21	option add FlowvisViewercursor crosshair widgetDefault
22	option add *FlowvisViewer.height 4i widgetDefault
23	option add *FlowvisViewer.foreground black widgetDefault
24	option add *FlowvisViewer.controlBackground gray widgetDefault
25	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
26	option add *FlowvisViewer.plotBackground black widgetDefault
27	option add *FlowvisViewer.plotForeground white widgetDefault
28	option add *FlowvisViewer.plotOutline gray widgetDefault
29	option add *FlowvisViewer.font \
30	--helvetica-medium-r-normal--12-* widgetDefault
31
32	# must use this name -- plugs into Rappture::resources::load
33	proc FlowvisViewer_init_resources {} {
34	Rappture::resources::register \
35	nanovis_server Rappture::FlowvisViewer::SetServerList
36	}
37
38	itcl::class Rappture::FlowvisViewer {
39	inherit Rappture::VisViewer
40
41	itk_option define -plotforeground plotForeground Foreground ""
42	itk_option define -plotbackground plotBackground Background ""
43	itk_option define -plotoutline plotOutline PlotOutline ""
44
45	constructor { hostlist args } {
46	Rappture::VisViewer::constructor $hostlist
47	} {
48	# defined below
49	}
50	destructor {
51	# defined below
52	}
53	public proc SetServerList { namelist } {
54	Rappture::VisViewer::SetServerList "nanovis" $namelist
55	}
56	public method add {dataobj {settings ""}}
57	public method camera {option args}
58	public method delete {args}
59	public method disconnect {}
60	public method download {option args}
61	public method flow {option}
62	public method get {args}
63	public method isconnected {}
64	public method limits { tf }
65	public method overmarker { m x }
66	public method parameters {title args} {
67	# do nothing
68	}
69	public method rmdupmarker { m x }
70	public method scale {args}
71	public method sendto { cmd }
72	public method updatetransferfuncs {}
73
74	protected method Connect {}
75	protected method CurrentVolumeIds {{what -all}}
76	protected method Disconnect {}
77	protected method Resize {}
78	protected method ResizeLegend {}
79	protected method FixSettings {what {value ""}}
80	protected method Pan {option x y}
81	protected method Rebuild {}
82	protected method ReceiveData { args }
83	protected method ReceiveImage { args }
84	protected method ReceiveLegend { tf vmin vmax size }
85	protected method Rotate {option x y}
86	protected method SendCmd {string}
87	protected method SendDataObjs {}
88	protected method SendTransferFuncs {}
89	protected method Slice {option args}
90	protected method SlicerTip {axis}
91	protected method Zoom {option}
92
93	# soon to be removed.
94	protected method Flow {option args}
95	protected method Play {}
96	protected method Pause {}
97
98
99	# The following methods are only used by this class.
100
101	private method AddIsoMarker { x y }
102	private method BuildCameraTab {}
103	private method BuildCutplanesTab {}
104	private method BuildViewTab {}
105	private method BuildVolumeTab {}
106	private method ComputeTransferFunc { tf }
107	private method EventuallyResize { w h }
108	private method EventuallyGoto { nSteps }
109	private method EventuallyResizeLegend { }
110	private method FlowCmd { dataobj comp nbytes extents }
111	private method GetMovie { widget width height }
112	private method GetPngImage { widget width height }
113	private method NameTransferFunc { dataobj comp }
114	private method PanCamera {}
115	private method ParseLevelsOption { tf levels }
116	private method ParseMarkersOption { tf markers }
117	private method WaitIcon { option widget }
118	private method str2millisecs { value }
119	private method millisecs2str { value }
120	private method GetFlowInfo { widget }
121	private method particles { tag name }
122	private method box { tag name }
123	private method streams { tag name }
124	private method arrows { tag name }
125
126	private variable _outbuf ;# buffer for outgoing commands
127
128	private variable _dlist "" ;# list of data objects
129	private variable _allDataObjs
130	private variable _obj2ovride ;# maps dataobj => style override
131	private variable _serverObjs ;# maps dataobj-component to volume ID
132	# in the server
133	private variable _sendobjs "" ;# list of data objs to send to server
134	private variable _recvObjs ;# list of data objs to send to server
135	private variable _obj2style ;# maps dataobj-component to transfunc
136	private variable _style2objs ;# maps tf back to list of
137	# dataobj-components using the tf.
138	private variable _obj2flow; # Maps dataobj-component to a flow.
139
140	private variable _click ;# info used for rotate operations
141	private variable _limits ;# autoscale min/max for all axes
142	private variable _view ;# view params for 3D view
143	private variable _isomarkers ;# array of isosurface level values 0..1
144	private common _settings
145	private variable _activeTf "" ;# The currently active transfer function.
146	private variable _first "" ;# This is the topmost volume.
147	private variable _buffering 0
148	private variable _nextToken 0
149	private variable _icon 0
150	private variable _flow
151	# This
152	# indicates which isomarkers and transfer
153	# function to use when changing markers,
154	# opacity, or thickness.
155	private common _downloadPopup ;# download options from popup
156
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _resizeLegendPending 0
162	private variable _gotoPending 0
163	}
164
165	itk::usual FlowvisViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
174
175	# Draw legend event
176	$_dispatcher register !legend
177	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
178
179	# Send dataobjs event
180	$_dispatcher register !send_dataobjs
181	$_dispatcher dispatch $this !send_dataobjs \
182	"[itcl::code $this SendDataObjs]; list"
183
184	# Send transferfunctions event
185	$_dispatcher register !send_transfunc
186	$_dispatcher dispatch $this !send_transfunc \
187	"[itcl::code $this SendTransferFuncs]; list"
188
189	# Rebuild event.
190	$_dispatcher register !rebuild
191	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
192
193	# Resize event.
194	$_dispatcher register !resize
195	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
196
197	$_dispatcher register !play
198	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
199
200	# Draw legend event
201	$_dispatcher register !goto
202	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
203
204	$_dispatcher register !movietimeout
205	$_dispatcher register !waiticon
206
207	set _flow(state) 0
208
209	set _outbuf ""
210
211	array set _downloadPopup {
212	format draft
213	}
214	#
215	# Populate parser with commands handle incoming requests
216	#
217	$_parser alias image [itcl::code $this ReceiveImage]
218	$_parser alias legend [itcl::code $this ReceiveLegend]
219	$_parser alias data [itcl::code $this ReceiveData]
220
221	# Initialize the view to some default parameters.
222	array set _view {
223	theta 45
224	phi 45
225	psi 0
226	zoom 1.0
227	pan-x 0
228	pan-y 0
229	}
230	set _limits(vmin) 0.0
231	set _limits(vmax) 1.0
232
233	array set _settings [subst {
234	$this-arrows 0
235	$this-currenttime 0
236	$this-duration 1:00
237	$this-loop 0
238	$this-pan-x $_view(pan-x)
239	$this-pan-y $_view(pan-y)
240	$this-phi $_view(phi)
241	$this-play 0
242	$this-psi $_view(psi)
243	$this-speed 500
244	$this-step 0
245	$this-streams 0
246	$this-theta $_view(theta)
247	$this-volume 1
248	$this-xcutplane 0
249	$this-xcutposition 0
250	$this-ycutplane 0
251	$this-ycutposition 0
252	$this-zcutplane 0
253	$this-zcutposition 0
254	$this-zoom $_view(zoom)
255	}]
256
257	itk_component add 3dview {
258	label $itk_component(plotarea).vol -image $_image(plot) \
259	-highlightthickness 0 -borderwidth 0
260	} {
261	usual
262	ignore -highlightthickness -borderwidth -background
263	}
264	set f [$itk_component(main) component controls]
265	itk_component add reset {
266	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
267	-highlightthickness 0 \
268	-image [Rappture::icon reset-view] \
269	-command [itcl::code $this Zoom reset]
270	} {
271	usual
272	ignore -highlightthickness
273	}
274	pack $itk_component(reset) -side top -padx 2 -pady 2
275	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
276
277	itk_component add zoomin {
278	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
279	-highlightthickness 0 \
280	-image [Rappture::icon zoom-in] \
281	-command [itcl::code $this Zoom in]
282	} {
283	usual
284	ignore -highlightthickness
285	}
286	pack $itk_component(zoomin) -side top -padx 2 -pady 2
287	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
288
289	itk_component add zoomout {
290	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
291	-highlightthickness 0 \
292	-image [Rappture::icon zoom-out] \
293	-command [itcl::code $this Zoom out]
294	} {
295	usual
296	ignore -highlightthickness
297	}
298	pack $itk_component(zoomout) -side top -padx 2 -pady 2
299	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
300
301	itk_component add volume {
302	Rappture::PushButton $f.volume \
303	-onimage [Rappture::icon volume-on] \
304	-offimage [Rappture::icon volume-off] \
305	-command [itcl::code $this FixSettings volume] \
306	-variable [itcl::scope _settings($this-volume)]
307	}
308	$itk_component(volume) select
309	Rappture::Tooltip::for $itk_component(volume) \
310	"Toggle the volume cloud on/off"
311	pack $itk_component(volume) -padx 2 -pady 2
312
313	BuildViewTab
314	BuildVolumeTab
315	BuildCutplanesTab
316	BuildCameraTab
317
318	bind $itk_component(3dview) <Configure> \
319	[itcl::code $this EventuallyResize %w %h]
320
321	# Legend
322	set _image(legend) [image create photo]
323	itk_component add legend {
324	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
325	} {
326	usual
327	ignore -highlightthickness
328	rename -background -plotbackground plotBackground Background
329	}
330	bind $itk_component(legend) <Configure> \
331	[itcl::code $this EventuallyResizeLegend]
332
333	# Hack around the Tk panewindow. The problem is that the requested
334	# size of the 3d view isn't set until an image is retrieved from
335	# the server. So the panewindow uses the tiny size.
336	set w 10000
337	pack forget $itk_component(3dview)
338	blt::table $itk_component(plotarea) \
339	0,0 $itk_component(3dview) -fill both -reqwidth $w \
340	1,0 $itk_component(legend) -fill x
341	blt::table configure $itk_component(plotarea) r1 -resize none
342	# Create flow controls...
343
344	itk_component add flowcontrols {
345	frame $itk_interior.flowcontrols
346	} {
347	usual
348	rename -background -controlbackground controlBackground Background
349	}
350	pack forget $itk_component(main)
351	blt::table $itk_interior \
352	0,0 $itk_component(main) -fill both \
353	1,0 $itk_component(flowcontrols) -fill x
354	blt::table configure $itk_interior r1 -resize none
355
356	# Rewind
357	itk_component add rewind {
358	button $itk_component(flowcontrols).reset \
359	-borderwidth 1 -padx 1 -pady 1 \
360	-image [Rappture::icon flow-rewind] \
361	-command [itcl::code $this flow reset]
362	} {
363	usual
364	ignore -borderwidth
365	rename -highlightbackground -controlbackground controlBackground \
366	Background
367	}
368	Rappture::Tooltip::for $itk_component(rewind) \
369	"Rewind flow"
370
371	# Stop
372	itk_component add stop {
373	button $itk_component(flowcontrols).stop \
374	-borderwidth 1 -padx 1 -pady 1 \
375	-image [Rappture::icon flow-stop] \
376	-command [itcl::code $this flow stop]
377	} {
378	usual
379	ignore -borderwidth
380	rename -highlightbackground -controlbackground controlBackground \
381	Background
382	}
383	Rappture::Tooltip::for $itk_component(stop) \
384	"Stop flow"
385
386	# Play
387	itk_component add play {
388	Rappture::PushButton $itk_component(flowcontrols).play \
389	-onimage [Rappture::icon flow-pause] \
390	-offimage [Rappture::icon flow-play] \
391	-variable [itcl::scope _settings($this-play)] \
392	-command [itcl::code $this flow toggle]
393	}
394	set fg [option get $itk_component(hull) font Font]
395	Rappture::Tooltip::for $itk_component(play) \
396	"Play/Pause flow"
397
398	# Loop
399	itk_component add loop {
400	Rappture::PushButton $itk_component(flowcontrols).loop \
401	-onimage [Rappture::icon flow-loop] \
402	-offimage [Rappture::icon flow-loop] \
403	-variable [itcl::scope _settings($this-loop)]
404	}
405	Rappture::Tooltip::for $itk_component(loop) \
406	"Play continuously"
407
408	itk_component add dial {
409	Rappture::Flowdial $itk_component(flowcontrols).dial \
410	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
411	-linecolor "" -activelinecolor "" \
412	-min 0.0 -max 1.0 \
413	-variable [itcl::scope _settings($this-currenttime)] \
414	-knobimage [Rappture::icon knob2] -knobposition center@middle
415	} {
416	usual
417	ignore -dialprogresscolor
418	rename -background -controlbackground controlBackground Background
419	}
420	$itk_component(dial) current 0.0
421	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
422	# Duration
423	itk_component add duration {
424	entry $itk_component(flowcontrols).duration \
425	-textvariable [itcl::scope _settings($this-duration)] \
426	-bg white -width 6 -font "arial 9"
427	} {
428	usual
429	ignore -highlightthickness -background
430	}
431	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
432	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
433	Rappture::Tooltip::for $itk_component(duration) \
434	"Set duration of flow (format is min:sec)"
435
436
437	itk_component add durationlabel {
438	label $itk_component(flowcontrols).durationl \
439	-text "Duration:" -font $fg \
440	-highlightthickness 0
441	} {
442	usual
443	ignore -highlightthickness
444	rename -background -controlbackground controlBackground Background
445	}
446
447	itk_component add speedlabel {
448	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
449	-highlightthickness 0
450	} {
451	usual
452	ignore -highlightthickness
453	rename -background -controlbackground controlBackground Background
454	}
455
456	# Speed
457	itk_component add speed {
458	Rappture::Flowspeed $itk_component(flowcontrols).speed \
459	-min 1 -max 10 -width 3 -font "arial 9"
460	} {
461	usual
462	ignore -highlightthickness
463	rename -background -controlbackground controlBackground Background
464	}
465	Rappture::Tooltip::for $itk_component(speed) \
466	"Change speed of flow"
467
468	$itk_component(speed) value 1
469	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
470
471
472	blt::table $itk_component(flowcontrols) \
473	0,0 $itk_component(rewind) -padx {3 0} \
474	0,1 $itk_component(stop) -padx {2 0} \
475	0,2 $itk_component(play) -padx {2 0} \
476	0,3 $itk_component(loop) -padx {2 0} \
477	0,4 $itk_component(dial) -fill x -padx {2 0 } \
478	0,5 $itk_component(duration) -padx { 0 0} \
479	0,7 $itk_component(speed) -padx {2 3}
480
481	# 0,6 $itk_component(speedlabel) -padx {2 0}
482	blt::table configure $itk_component(flowcontrols) c* -resize none
483	blt::table configure $itk_component(flowcontrols) c4 -resize both
484	blt::table configure $itk_component(flowcontrols) r0 -pady 1
485	# Bindings for rotation via mouse
486	bind $itk_component(3dview) <ButtonPress-1> \
487	[itcl::code $this Rotate click %x %y]
488	bind $itk_component(3dview) <B1-Motion> \
489	[itcl::code $this Rotate drag %x %y]
490	bind $itk_component(3dview) <ButtonRelease-1> \
491	[itcl::code $this Rotate release %x %y]
492
493	bind $itk_component(3dview) <Configure> \
494	[itcl::code $this EventuallyResize %w %h]
495
496	# Bindings for panning via mouse
497	bind $itk_component(3dview) <ButtonPress-2> \
498	[itcl::code $this Pan click %x %y]
499	bind $itk_component(3dview) <B2-Motion> \
500	[itcl::code $this Pan drag %x %y]
501	bind $itk_component(3dview) <ButtonRelease-2> \
502	[itcl::code $this Pan release %x %y]
503
504	# Bindings for panning via keyboard
505	bind $itk_component(3dview) <KeyPress-Left> \
506	[itcl::code $this Pan set -10 0]
507	bind $itk_component(3dview) <KeyPress-Right> \
508	[itcl::code $this Pan set 10 0]
509	bind $itk_component(3dview) <KeyPress-Up> \
510	[itcl::code $this Pan set 0 -10]
511	bind $itk_component(3dview) <KeyPress-Down> \
512	[itcl::code $this Pan set 0 10]
513	bind $itk_component(3dview) <Shift-KeyPress-Left> \
514	[itcl::code $this Pan set -2 0]
515	bind $itk_component(3dview) <Shift-KeyPress-Right> \
516	[itcl::code $this Pan set 2 0]
517	bind $itk_component(3dview) <Shift-KeyPress-Up> \
518	[itcl::code $this Pan set 0 -2]
519	bind $itk_component(3dview) <Shift-KeyPress-Down> \
520	[itcl::code $this Pan set 0 2]
521
522	# Bindings for zoom via keyboard
523	bind $itk_component(3dview) <KeyPress-Prior> \
524	[itcl::code $this Zoom out]
525	bind $itk_component(3dview) <KeyPress-Next> \
526	[itcl::code $this Zoom in]
527
528	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
529
530	if {[string equal "x11" [tk windowingsystem]]} {
531	# Bindings for zoom via mouse
532	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
533	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
534	}
535
536	set _image(download) [image create photo]
537
538	eval itk_initialize $args
539
540	Connect
541	}
542
543	# ----------------------------------------------------------------------
544	# DESTRUCTOR
545	# ----------------------------------------------------------------------
546	itcl::body Rappture::FlowvisViewer::destructor {} {
547	set _sendobjs "" ;# stop any send in progress
548	$_dispatcher cancel !rebuild
549	$_dispatcher cancel !send_dataobjs
550	$_dispatcher cancel !send_transfunc
551	image delete $_image(plot)
552	image delete $_image(legend)
553	image delete $_image(download)
554	array unset _settings $this-*
555	}
556
557	# ----------------------------------------------------------------------
558	# USAGE: add <dataobj> ?<settings>?
559	#
560	# Clients use this to add a data object to the plot. The optional
561	# <settings> are used to configure the plot. Allowed settings are
562	# -color, -brightness, -width, -linestyle, and -raise.
563	# ----------------------------------------------------------------------
564	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
565	array set params {
566	-color auto
567	-width 1
568	-linestyle solid
569	-brightness 0
570	-raise 0
571	-description ""
572	-param ""
573	}
574	foreach {opt val} $settings {
575	if {![info exists params($opt)]} {
576	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
577	}
578	set params($opt) $val
579	}
580	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
581	# can't handle -autocolors yet
582	set params(-color) black
583	}
584	foreach comp [$dataobj components] {
585	set flowobj [$dataobj flowhints $comp]
586	if { $flowobj == "" } {
587	puts stderr "no flowhints $dataobj-$comp"
588	continue
589	}
590	set _obj2flow($dataobj-$comp) $flowobj
591	}
592	set pos [lsearch -exact $dataobj $_dlist]
593	if {$pos < 0} {
594	lappend _dlist $dataobj
595	set _allDataObjs($dataobj) 1
596	set _obj2ovride($dataobj-color) $params(-color)
597	set _obj2ovride($dataobj-width) $params(-width)
598	set _obj2ovride($dataobj-raise) $params(-raise)
599	$_dispatcher event -idle !rebuild
600	}
601	}
602
603	# ----------------------------------------------------------------------
604	# USAGE: get ?-objects?
605	# USAGE: get ?-image 3dview\|legend?
606	#
607	# Clients use this to query the list of objects being plotted, in
608	# order from bottom to top of this result. The optional "-image"
609	# flag can also request the internal images being shown.
610	# ----------------------------------------------------------------------
611	itcl::body Rappture::FlowvisViewer::get {args} {
612	if {[llength $args] == 0} {
613	set args "-objects"
614	}
615
616	set op [lindex $args 0]
617	switch -- $op {
618	-objects {
619	# put the dataobj list in order according to -raise options
620	set dlist $_dlist
621	foreach obj $dlist {
622	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
623	set i [lsearch -exact $dlist $obj]
624	if {$i >= 0} {
625	set dlist [lreplace $dlist $i $i]
626	lappend dlist $obj
627	}
628	}
629	}
630	return $dlist
631	}
632	-image {
633	if {[llength $args] != 2} {
634	error "wrong # args: should be \"get -image 3dview\|legend\""
635	}
636	switch -- [lindex $args end] {
637	3dview {
638	return $_image(plot)
639	}
640	legend {
641	return $_image(legend)
642	}
643	default {
644	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
645	}
646	}
647	}
648	default {
649	error "bad option \"$op\": should be -objects or -image"
650	}
651	}
652	}
653
654	# ----------------------------------------------------------------------
655	# USAGE: delete ?<dataobj1> <dataobj2> ...?
656	#
657	# Clients use this to delete a dataobj from the plot. If no dataobjs
658	# are specified, then all dataobjs are deleted. No data objects are
659	# deleted. They are only removed from the display list.
660	#
661	# ----------------------------------------------------------------------
662	itcl::body Rappture::FlowvisViewer::delete {args} {
663	flow stop
664	if {[llength $args] == 0} {
665	set args $_dlist
666	}
667
668	# Delete all specified dataobjs
669	set changed 0
670	foreach dataobj $args {
671	set pos [lsearch -exact $_dlist $dataobj]
672	if { $pos >= 0 } {
673	foreach comp [$dataobj components] {
674	array unset _limits $dataobj-$comp-*
675	}
676	set _dlist [lreplace $_dlist $pos $pos]
677	array unset _obj2ovride $dataobj-*
678	array unset _obj2flow $dataobj-*
679	array unset _serverObjs $dataobj-*
680	array unset _obj2style $dataobj-*
681	set changed 1
682	}
683	}
684	# If anything changed, then rebuild the plot
685	if {$changed} {
686	# Repair the reverse lookup
687	foreach tf [array names _style2objs] {
688	set list {}
689	foreach {dataobj comp} $_style2objs($tf) break
690	if { [info exists _serverObjs($dataobj-$comp)] } {
691	lappend list $dataobj $comp
692	}
693	if { $list == "" } {
694	array unset _style2objs $tf
695	} else {
696	set _style2objs($tf) $list
697	}
698	}
699	$_dispatcher event -idle !rebuild
700	}
701	}
702
703	# ----------------------------------------------------------------------
704	# USAGE: scale ?<data1> <data2> ...?
705	#
706	# Sets the default limits for the overall plot according to the
707	# limits of the data for all of the given <data> objects. This
708	# accounts for all objects--even those not showing on the screen.
709	# Because of this, the limits are appropriate for all objects as
710	# the user scans through data in the ResultSet viewer.
711	# ----------------------------------------------------------------------
712	itcl::body Rappture::FlowvisViewer::scale {args} {
713	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
714	set _limits($val) ""
715	}
716	foreach obj $args {
717	foreach axis {x y z v} {
718
719	foreach { min max } [$obj limits $axis] break
720
721	if {"" != $min && "" != $max} {
722	if {"" == $_limits(${axis}min)} {
723	set _limits(${axis}min) $min
724	set _limits(${axis}max) $max
725	} else {
726	if {$min < $_limits(${axis}min)} {
727	set _limits(${axis}min) $min
728	}
729	if {$max > $_limits(${axis}max)} {
730	set _limits(${axis}max) $max
731	}
732	}
733	}
734	}
735	}
736	}
737
738	# ----------------------------------------------------------------------
739	# USAGE: download coming
740	# USAGE: download controls <downloadCommand>
741	# USAGE: download now
742	#
743	# Clients use this method to create a downloadable representation
744	# of the plot. Returns a list of the form {ext string}, where
745	# "ext" is the file extension (indicating the type of data) and
746	# "string" is the data itself.
747	# ----------------------------------------------------------------------
748	itcl::body Rappture::FlowvisViewer::download {option args} {
749	set popup .flowvisviewerdownload
750	switch $option {
751	coming {
752	if {[catch {
753	blt::winop snap $itk_component(plotarea) $_image(download)
754	}]} {
755	$_image(download) configure -width 1 -height 1
756	$_image(download) put #000000
757	}
758	}
759	controls {
760	if {![winfo exists $popup]} {
761	# if we haven't created the popup yet, do it now
762	Rappture::Balloon $popup \
763	-title "[Rappture::filexfer::label downloadWord] as..."
764	set inner [$popup component inner]
765	label $inner.summary -text "" -anchor w
766	pack $inner.summary -side top
767	set img $_image(plot)
768	set res "[image width $img]x[image height $img]"
769	radiobutton $inner.draft -text "Image (draft $res)" \
770	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
771	-value draft
772	pack $inner.draft -anchor w
773
774	set res "640x480"
775	radiobutton $inner.medium -text "Movie (standard $res)" \
776	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
777	-value $res
778	pack $inner.medium -anchor w
779
780	set res "1024x768"
781	radiobutton $inner.high -text "Movie (high quality $res)" \
782	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
783	-value $res
784	pack $inner.high -anchor w
785	button $inner.go -text [Rappture::filexfer::label download] \
786	-command [lindex $args 0]
787	pack $inner.go -pady 4
788	$inner.draft select
789	} else {
790	set inner [$popup component inner]
791	}
792	set num [llength [get]]
793	set num [expr {($num == 1) ? "1 result" : "$num results"}]
794	set word [Rappture::filexfer::label downloadWord]
795	$inner.summary configure -text "$word $num in the following format:"
796	update idletasks ;# fix initial sizes
797	return $popup
798	}
799	now {
800	if { [winfo exists $popup] } {
801	$popup deactivate
802	}
803	switch -- $_downloadPopup(format) {
804	draft {
805	# Get the image data (as base64) and decode it back to
806	# binary. This is better than writing to temporary
807	# files. When we switch to the BLT picture image it
808	# won't be necessary to decode the image data.
809	set bytes [$_image(plot) data -format "jpeg -quality 100"]
810	set bytes [Rappture::encoding::decode -as b64 $bytes]
811	return [list .jpg $bytes]
812	}
813	"640x480" {
814	return [$this GetMovie [lindex $args 0] 640 480]
815	}
816	"1024x768" {
817	return [$this GetMovie [lindex $args 0] 1024 768]
818	}
819	default {
820	error "bad download format $_downloadPopup(format)"
821	}
822	}
823	}
824	default {
825	error "bad option \"$option\": should be coming, controls, now"
826	}
827	}
828	}
829
830	# ----------------------------------------------------------------------
831	# USAGE: Connect ?<host:port>,<host:port>...?
832	#
833	# Clients use this method to establish a connection to a new
834	# server, or to reestablish a connection to the previous server.
835	# Any existing connection is automatically closed.
836	# ----------------------------------------------------------------------
837	itcl::body Rappture::FlowvisViewer::Connect {} {
838	set _hosts [GetServerList "nanovis"]
839	if { "" == $_hosts } {
840	return 0
841	}
842	set result [VisViewer::Connect $_hosts]
843	if { $result } {
844	set w [winfo width $itk_component(3dview)]
845	set h [winfo height $itk_component(3dview)]
846	EventuallyResize $w $h
847	}
848	return $result
849	}
850
851	#
852	# isconnected --
853	#
854	# Indicates if we are currently connected to the visualization server.
855	#
856	itcl::body Rappture::FlowvisViewer::isconnected {} {
857	return [VisViewer::IsConnected]
858	}
859
860	#
861	# disconnect --
862	#
863	itcl::body Rappture::FlowvisViewer::disconnect {} {
864	Disconnect
865	}
866
867	#
868	# sendto --
869	#
870	itcl::body Rappture::FlowvisViewer::sendto { bytes } {
871	SendBytes "$bytes\n"
872	}
873
874	#
875	# Disconnect --
876	#
877	# Clients use this method to disconnect from the current rendering
878	# server.
879	#
880	itcl::body Rappture::FlowvisViewer::Disconnect {} {
881	VisViewer::Disconnect
882
883	# disconnected -- no more data sitting on server
884	set _outbuf ""
885	array unset _serverObjs
886	set _sendobjs ""
887	}
888
889	#
890	# SendCmd
891	#
892	# Send commands off to the rendering server. If we're currently
893	# sending data objects to the server, buffer the commands to be
894	# sent later.
895	#
896	itcl::body Rappture::FlowvisViewer::SendCmd { string } {
897	if { $_buffering } {
898	append _outbuf $string "\n"
899	} else {
900	foreach line [split $string \n] {
901	SendEcho >>line $line
902	}
903	SendBytes "$string\n"
904	}
905	}
906
907	# ----------------------------------------------------------------------
908	# USAGE: SendDataObjs
909	#
910	# Used internally to send a series of volume objects off to the
911	# server. Sends each object, a little at a time, with updates in
912	# between so the interface doesn't lock up.
913	# ----------------------------------------------------------------------
914	itcl::body Rappture::FlowvisViewer::SendDataObjs {} {
915	puts stderr "in SendDataObjs"
916
917	blt::busy hold $itk_component(hull)
918	foreach dataobj $_sendobjs {
919	foreach comp [$dataobj components] {
920	# Send the data as one huge base64-encoded mess -- yuck!
921	set data [$dataobj blob $comp]
922	set nbytes [string length $data]
923	set extents [$dataobj extents $comp]
924
925	# I have a field. Is a vector field or a volume field?
926	if { $extents == 1 } {
927	set cmd "volume data follows $nbytes $dataobj-$comp\n"
928	} else {
929	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
930	if { $cmd == "" } {
931	puts stderr "no command"
932	continue
933	}
934	}
935	f { ![SendBytes $cmd] } {
936	puts stderr "can't send"
937	return
938	}
939	if { ![SendBytes $data] } {
940	puts stderr "can't send"
941	return
942	}
943	NameTransferFunc $dataobj $comp
944	set _recvObjs($dataobj-$comp) 1
945	}
946	}
947	set _sendobjs ""
948	blt::busy release $itk_component(hull)
949
950	# Turn on buffering of commands to the server. We don't want to
951	# be preempted by a server disconnect/reconnect (which automatically
952	# generates a new call to Rebuild).
953	set _buffering 1
954
955	# activate the proper volume
956	set _first [lindex [get] 0]
957	if { "" != $_first } {
958	set axis [$_first hints updir]
959	if {"" != $axis} {
960	SendCmd "up $axis"
961	}
962
963	if 0 {
964	set location [$_first hints camera]
965	if { $location != "" } {
966	array set _view $location
967	}
968	set _settings($this-theta) $_view(theta)
969	set _settings($this-phi) $_view(phi)
970	set _settings($this-psi) $_view(psi)
971	set _settings($this-pan-x) $_view(pan-x)
972	set _settings($this-pan-y) $_view(pan-y)
973	set _settings($this-zoom) $_view(zoom)
974	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
975	SendCmd "camera angle $xyz"
976	PanCamera
977	SendCmd "camera zoom $_view(zoom)"
978	}
979	# The active transfer function is by default the first component of
980	# the first data object. This assumes that the data is always
981	# successfully transferred.
982	set comp [lindex [$_first components] 0]
983	set _activeTf [lindex $_obj2style($_first-$comp) 0]
984	}
985
986	SendCmd "flow reset"
987
988	# Actually write the commands to the server socket. If it fails, we don't
989	# care. We're finished here.
990	SendBytes $_outbuf;
991	set _buffering 0; # Turn off buffering.
992	set _outbuf ""; # Clear the buffer.
993	}
994
995	# ----------------------------------------------------------------------
996	# USAGE: SendTransferFuncs
997	# ----------------------------------------------------------------------
998	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
999	if { $_activeTf == "" } {
1000	puts stderr "no active tf"
1001	return
1002	}
1003	set tf $_activeTf
1004	if { $_first == "" } {
1005	puts stderr "no first"
1006	return
1007	}
1008
1009	# Insure that the global opacity and thickness settings (in the slider
1010	# settings widgets) are used for the active transfer-function. Update the
1011	# values in the _settings varible.
1012	set value $_settings($this-opacity)
1013	set opacity [expr { double($value) * 0.01 }]
1014	set _settings($this-$tf-opacity) $opacity
1015	set value $_settings($this-thickness)
1016	# Scale values between 0.00001 and 0.01000
1017	set thickness [expr {double($value) * 0.0001}]
1018	set _settings($this-$tf-thickness) $thickness
1019
1020	foreach key [array names _obj2style $_first-*] {
1021	if { [info exists _obj2style($key)] } {
1022	foreach tf $_obj2style($key) {
1023	ComputeTransferFunc $tf
1024	}
1025	}
1026	}
1027	EventuallyResizeLegend
1028	}
1029
1030	# ----------------------------------------------------------------------
1031	# USAGE: ReceiveImage -bytes $size -type $type -token $token
1032	#
1033	# Invoked automatically whenever the "image" command comes in from
1034	# the rendering server. Indicates that binary image data with the
1035	# specified <size> will follow.
1036	# ----------------------------------------------------------------------
1037	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
1038	array set info {
1039	-token "???"
1040	-bytes 0
1041	-type image
1042	}
1043	array set info $args
1044	set bytes [ReceiveBytes $info(-bytes)]
1045	ReceiveEcho <<line "<read $info(-bytes) bytes"
1046	switch -- $info(-type) {
1047	"image" {
1048	$_image(plot) configure -data $bytes
1049	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1050	}
1051	"print" {
1052	set tag $this-$info(-token)
1053	set _hardcopy($tag) $bytes
1054	}
1055	"movie" {
1056	puts stderr "read [string length $bytes] bytes type=$info(-type) token=$info(-token)"
1057	set tag $this-$info(-token)
1058	set _hardcopy($tag) $bytes
1059	}
1060	default {
1061	puts stderr "unknown download type $info(-type)"
1062	}
1063	}
1064	}
1065
1066	#
1067	# ReceiveLegend --
1068	#
1069	# The procedure is the response from the render server to each "legend"
1070	# command. The server sends back a "legend" command invoked our
1071	# the slave interpreter. The purpose is to collect data of the image
1072	# representing the legend in the canvas. In addition, the isomarkers
1073	# of the active transfer function are displayed.
1074	#
1075	# I don't know is this is the right place to display the isomarkers.
1076	# I don't know all the different paths used to draw the plot. There's
1077	# "Rebuild", "add", etc.
1078	#
1079	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1080	if { ![isconnected] } {
1081	return
1082	}
1083	#puts stderr "receive legend $tag $vmin $vmax $size"
1084	set bytes [ReceiveBytes $size]
1085	$_image(legend) configure -data $bytes
1086	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1087
1088	set c $itk_component(legend)
1089	set w [winfo width $c]
1090	set h [winfo height $c]
1091	set lx 10
1092	set ly [expr {$h - 1}]
1093	if {"" == [$c find withtag transfunc]} {
1094	$c create image 10 10 -anchor nw \
1095	-image $_image(legend) -tags transfunc
1096	$c create text $lx $ly -anchor sw \
1097	-fill $itk_option(-plotforeground) -tags "limits vmin"
1098	$c create text [expr {$w-$lx}] $ly -anchor se \
1099	-fill $itk_option(-plotforeground) -tags "limits vmax"
1100	$c lower transfunc
1101	$c bind transfunc <ButtonRelease-1> \
1102	[itcl::code $this AddIsoMarker %x %y]
1103	}
1104	# Display the markers used by the active transfer function.
1105	set tf $_obj2style($tag)
1106	array set limits [limits $tf]
1107	$c itemconfigure vmin -text [format %.2g $limits(vmin)]
1108	$c coords vmin $lx $ly
1109
1110	$c itemconfigure vmax -text [format %.2g $limits(vmax)]
1111	$c coords vmax [expr {$w-$lx}] $ly
1112
1113	if { [info exists _isomarkers($tf)] } {
1114	foreach m $_isomarkers($tf) {
1115	$m visible yes
1116	}
1117	}
1118	}
1119
1120	#
1121	# ReceiveData --
1122	#
1123	# The procedure is the response from the render server to each "data
1124	# follows" command. The server sends back a "data" command invoked our
1125	# the slave interpreter. The purpose is to collect the min/max of the
1126	# volume sent to the render server. Since the client (flowvisviewer)
1127	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1128	# tell us what the limits are. Once we've received the limits to all
1129	# the data we've sent (tracked by _recvObjs) we can then determine
1130	# what the transfer functions are for these # volumes.
1131	#
1132	# Note: There is a considerable tradeoff in having the server report
1133	# back what the data limits are. It means that much of the code
1134	# having to do with transfer-functions has to wait for the data
1135	# to come back, since the isomarkers are calculated based upon
1136	# the data limits. The client code is much messier because of
1137	# this. The alternative is to parse any of the 3D formats on the
1138	# client side.
1139	#
1140	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1141	if { ![isconnected] } {
1142	return
1143	}
1144	# Arguments from server are name value pairs. Stuff them in an array.
1145	array set values $args
1146	set tag $values(tag)
1147	set parts [split $tag -]
1148	set dataobj [lindex $parts 0]
1149	set _serverObjs($tag) 0
1150	set _limits($tag-min) $values(min); # Minimum value of the volume.
1151	set _limits($tag-max) $values(max); # Maximum value of the volume.
1152	unset _recvObjs($tag)
1153	if { [array size _recvObjs] == 0 } {
1154	updatetransferfuncs
1155	}
1156	}
1157
1158	#
1159	# Rebuild --
1160	#
1161	# Called automatically whenever something changes that affects the data
1162	# in the widget. Clears any existing data and rebuilds the widget to
1163	# display new data.
1164	#
1165	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1166
1167	# Hide all the isomarkers. Can't remove them. Have to remember the
1168	# settings since the user may have created/deleted/moved markers.
1169
1170	foreach tf [array names _isomarkers] {
1171	foreach m $_isomarkers($tf) {
1172	$m visible no
1173	}
1174	}
1175
1176	set _first ""
1177	# Turn on buffering of commands to the server. We don't want to
1178	# be preempted by a server disconnect/reconnect (which automatically
1179	# generates a new call to Rebuild).
1180	set _buffering 1
1181
1182	set w [winfo width $itk_component(3dview)]
1183	set h [winfo height $itk_component(3dview)]
1184	EventuallyResize $w $h
1185
1186	foreach dataobj [get] {
1187	foreach comp [$dataobj components] {
1188	# Send the data as one huge base64-encoded mess -- yuck!
1189	set data [$dataobj blob $comp]
1190	set nbytes [string length $data]
1191	set extents [$dataobj extents $comp]
1192	# I have a field. Is a vector field or a volume field?
1193	if { $extents == 1 } {
1194	set cmd "volume data follows $nbytes $dataobj-$comp\n"
1195	} else {
1196	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1197	if { $cmd == "" } {
1198	puts stderr "no command"
1199	continue
1200	}
1201	}
1202	append _outbuf $cmd
1203	append _outbuf $data
1204	NameTransferFunc $dataobj $comp
1205	set _recvObjs($dataobj-$comp) 1
1206	}
1207	}
1208
1209	set _first [lindex [get] 0]
1210
1211	# Reset the camera and other view parameters
1212	FixSettings isosurface
1213	FixSettings grid
1214	FixSettings axes
1215	FixSettings volume
1216	FixSettings outline
1217	FixSettings light
1218	FixSettings transp
1219
1220	# nothing to send -- activate the proper volume
1221	if {"" != $_first} {
1222	FixSettings light
1223	FixSettings transp
1224	set axis [$_first hints updir]
1225	if {"" != $axis} {
1226	SendCmd "up $axis"
1227	}
1228	set location [$_first hints camera]
1229	if { $location != "" } {
1230	array set _view $location
1231	}
1232	}
1233	set _settings($this-theta) $_view(theta)
1234	set _settings($this-phi) $_view(phi)
1235	set _settings($this-psi) $_view(psi)
1236	set _settings($this-pan-x) $_view(pan-x)
1237	set _settings($this-pan-y) $_view(pan-y)
1238	set _settings($this-zoom) $_view(zoom)
1239
1240	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1241	SendCmd "camera angle $xyz"
1242	PanCamera
1243	SendCmd "camera zoom $_view(zoom)"
1244
1245	foreach dataobj [get] {
1246	foreach comp [$dataobj components] {
1247	NameTransferFunc $dataobj $comp
1248	}
1249	}
1250
1251	# nothing to send -- activate the proper ivol
1252	set _first [lindex [get] 0]
1253	if {"" != $_first} {
1254	set axis [$_first hints updir]
1255	if {"" != $axis} {
1256	SendCmd "up $axis"
1257	}
1258	set location [$_first hints camera]
1259	if { $location != "" } {
1260	array set _view $location
1261	}
1262	set comp [lindex [$_first components] 0]
1263	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1264	}
1265
1266
1267	# sync the state of slicers
1268	set vols [CurrentVolumeIds -cutplanes]
1269	foreach axis {x y z} {
1270	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1271	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1272	SendCmd "cutplane position $pos $axis $vols"
1273	}
1274	SendCmd "volume data state $_settings($this-volume)"
1275	EventuallyResizeLegend
1276
1277	# Actually write the commands to the server socket. If it fails, we don't
1278	# care. We're finished here.
1279	blt::busy hold $itk_component(hull)
1280	SendBytes $_outbuf
1281	blt::busy release $itk_component(hull)
1282	set _buffering 0; # Turn off buffering.
1283	set _outbuf ""; # Clear the buffer.
1284	}
1285
1286	# ----------------------------------------------------------------------
1287	# USAGE: CurrentVolumeIds ?-cutplanes?
1288	#
1289	# Returns a list of volume server IDs for the current volume being
1290	# displayed. This is normally a single ID, but it might be a list
1291	# of IDs if the current data object has multiple components.
1292	# ----------------------------------------------------------------------
1293	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1294	return ""
1295	if { $_first == "" } {
1296	return
1297	}
1298	foreach key [array names _serverObjs -] {
1299	if {[string match $_first-* $key]} {
1300	array set style {
1301	-cutplanes 1
1302	}
1303	foreach {dataobj comp} [split $key -] break
1304	array set style [lindex [$dataobj components -style $comp] 0]
1305	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1306	lappend rlist $_serverObjs($key)
1307	}
1308	}
1309	}
1310	return $rlist
1311	}
1312
1313	# ----------------------------------------------------------------------
1314	# USAGE: Zoom in
1315	# USAGE: Zoom out
1316	# USAGE: Zoom reset
1317	#
1318	# Called automatically when the user clicks on one of the zoom
1319	# controls for this widget. Changes the zoom for the current view.
1320	# ----------------------------------------------------------------------
1321	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1322	switch -- $option {
1323	"in" {
1324	set _view(zoom) [expr {$_view(zoom)*1.25}]
1325	set _settings($this-zoom) $_view(zoom)
1326	}
1327	"out" {
1328	set _view(zoom) [expr {$_view(zoom)*0.8}]
1329	set _settings($this-zoom) $_view(zoom)
1330	}
1331	"reset" {
1332	array set _view {
1333	theta 45
1334	phi 45
1335	psi 0
1336	zoom 1.0
1337	pan-x 0
1338	pan-y 0
1339	}
1340	if { $_first != "" } {
1341	set location [$_first hints camera]
1342	if { $location != "" } {
1343	array set _view $location
1344	}
1345	}
1346	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1347	SendCmd "camera angle $xyz"
1348	PanCamera
1349	set _settings($this-theta) $_view(theta)
1350	set _settings($this-phi) $_view(phi)
1351	set _settings($this-psi) $_view(psi)
1352	set _settings($this-pan-x) $_view(pan-x)
1353	set _settings($this-pan-y) $_view(pan-y)
1354	set _settings($this-zoom) $_view(zoom)
1355	}
1356	}
1357	SendCmd "camera zoom $_view(zoom)"
1358	}
1359
1360	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1361	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1362	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1363	set x $_view(pan-x)
1364	set y $_view(pan-y)
1365	SendCmd "camera pan $x $y"
1366	}
1367
1368	# ----------------------------------------------------------------------
1369	# USAGE: Rotate click <x> <y>
1370	# USAGE: Rotate drag <x> <y>
1371	# USAGE: Rotate release <x> <y>
1372	#
1373	# Called automatically when the user clicks/drags/releases in the
1374	# plot area. Moves the plot according to the user's actions.
1375	# ----------------------------------------------------------------------
1376	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1377	switch -- $option {
1378	click {
1379	$itk_component(3dview) configure -cursor fleur
1380	set _click(x) $x
1381	set _click(y) $y
1382	set _click(theta) $_view(theta)
1383	set _click(phi) $_view(phi)
1384	}
1385	drag {
1386	if {[array size _click] == 0} {
1387	Rotate click $x $y
1388	} else {
1389	set w [winfo width $itk_component(3dview)]
1390	set h [winfo height $itk_component(3dview)]
1391	if {$w <= 0 \|\| $h <= 0} {
1392	return
1393	}
1394
1395	if {[catch {
1396	# this fails sometimes for no apparent reason
1397	set dx [expr {double($x-$_click(x))/$w}]
1398	set dy [expr {double($y-$_click(y))/$h}]
1399	}]} {
1400	return
1401	}
1402
1403	#
1404	# Rotate the camera in 3D
1405	#
1406	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1407	# when psi is flipped around, theta moves backwards
1408	set dy [expr {-$dy}]
1409	}
1410	set theta [expr {$_view(theta) - $dy*180}]
1411	while {$theta < 0} { set theta [expr {$theta+180}] }
1412	while {$theta > 180} { set theta [expr {$theta-180}] }
1413
1414	if {abs($theta) >= 30 && abs($theta) <= 160} {
1415	set phi [expr {$_view(phi) - $dx*360}]
1416	while {$phi < 0} { set phi [expr {$phi+360}] }
1417	while {$phi > 360} { set phi [expr {$phi-360}] }
1418	set psi $_view(psi)
1419	} else {
1420	set phi $_view(phi)
1421	set psi [expr {$_view(psi) - $dx*360}]
1422	while {$psi < -180} { set psi [expr {$psi+360}] }
1423	while {$psi > 180} { set psi [expr {$psi-360}] }
1424	}
1425
1426	set _view(theta) $theta
1427	set _view(phi) $phi
1428	set _view(psi) $psi
1429	set xyz [Euler2XYZ $theta $phi $psi]
1430	set _settings($this-theta) $_view(theta)
1431	set _settings($this-phi) $_view(phi)
1432	set _settings($this-psi) $_view(psi)
1433	SendCmd "camera angle $xyz"
1434	set _click(x) $x
1435	set _click(y) $y
1436	}
1437	}
1438	release {
1439	Rotate drag $x $y
1440	$itk_component(3dview) configure -cursor ""
1441	catch {unset _click}
1442	}
1443	default {
1444	error "bad option \"$option\": should be click, drag, release"
1445	}
1446	}
1447	}
1448
1449	# ----------------------------------------------------------------------
1450	# USAGE: $this Pan click x y
1451	# $this Pan drag x y
1452	# $this Pan release x y
1453	#
1454	# Called automatically when the user clicks on one of the zoom
1455	# controls for this widget. Changes the zoom for the current view.
1456	# ----------------------------------------------------------------------
1457	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1458	# Experimental stuff
1459	set w [winfo width $itk_component(3dview)]
1460	set h [winfo height $itk_component(3dview)]
1461	if { $option == "set" } {
1462	set x [expr $x / double($w)]
1463	set y [expr $y / double($h)]
1464	set _view(pan-x) [expr $_view(pan-x) + $x]
1465	set _view(pan-y) [expr $_view(pan-y) + $y]
1466	PanCamera
1467	set _settings($this-pan-x) $_view(pan-x)
1468	set _settings($this-pan-y) $_view(pan-y)
1469	return
1470	}
1471	if { $option == "click" } {
1472	set _click(x) $x
1473	set _click(y) $y
1474	$itk_component(3dview) configure -cursor hand1
1475	}
1476	if { $option == "drag" \|\| $option == "release" } {
1477	set dx [expr ($_click(x) - $x)/double($w)]
1478	set dy [expr ($_click(y) - $y)/double($h)]
1479	set _click(x) $x
1480	set _click(y) $y
1481	set _view(pan-x) [expr $_view(pan-x) - $dx]
1482	set _view(pan-y) [expr $_view(pan-y) - $dy]
1483	PanCamera
1484	set _settings($this-pan-x) $_view(pan-x)
1485	set _settings($this-pan-y) $_view(pan-y)
1486	}
1487	if { $option == "release" } {
1488	$itk_component(3dview) configure -cursor ""
1489	}
1490	}
1491
1492
1493	# ----------------------------------------------------------------------
1494	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1495	#
1496	# Called when the user clicks on the record, stop or play buttons
1497	# for flow visualization.
1498	# ----------------------------------------------------------------------
1499	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1500	switch -- $option {
1501	movie {
1502	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1503	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1504	}
1505	set action [lindex $args 0]
1506	set op [lindex $args 1]
1507	if {$op == ""} { set op "on" }
1508
1509	set current [State $action]
1510	if {$op == "toggle"} {
1511	if {$current == "on"} {
1512	set op "off"
1513	} else {
1514	set op "on"
1515	}
1516	}
1517	set cmds ""
1518	switch -- $action {
1519	record {
1520	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1521	$itk_component(rewind) configure -relief sunken
1522	$itk_component(stop) configure -relief raised
1523	$itk_component(play) configure -relief raised
1524	set inner $itk_component(settingsFrame)
1525	set frames [$inner.framecnt value]
1526	set _settings(nsteps) $frames
1527	set cmds "flow capture $frames"
1528	SendCmd $cmds
1529	}
1530	}
1531	stop {
1532	if { [$itk_component(stop) cget -relief] != "sunken" } {
1533	$itk_component(rewind) configure -relief raised
1534	$itk_component(stop) configure -relief sunken
1535	$itk_component(play) configure -relief raised
1536	_pause
1537	set cmds "flow reset"
1538	SendCmd $cmds
1539	}
1540	}
1541	play {
1542	if { [$itk_component(play) cget -relief] != "sunken" } {
1543	$itk_component(rewind) configure -relief raised
1544	$itk_component(stop) configure -relief raised
1545	$itk_component(play) configure \
1546	-image [Rappture::icon flow-pause] \
1547	-relief sunken
1548	bind $itk_component(play) <ButtonPress> \
1549	[itcl::code $this _pause]
1550	flow next
1551	}
1552	}
1553	default {
1554	error "bad option \"$option\": should be one of record\|stop\|play"
1555	}
1556
1557	}
1558	}
1559	default {
1560	error "bad option \"$option\": should be movie"
1561	}
1562	}
1563	}
1564
1565	# ----------------------------------------------------------------------
1566	# USAGE: Play
1567	#
1568	# ----------------------------------------------------------------------
1569	itcl::body Rappture::FlowvisViewer::Play {} {
1570	SendCmd "flow next"
1571	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1572	$_dispatcher event -after $delay !play
1573	}
1574
1575	# ----------------------------------------------------------------------
1576	# USAGE: Pause
1577	#
1578	# Invoked when the user hits the "pause" button to stop playing the
1579	# current sequence of frames as a movie.
1580	# ----------------------------------------------------------------------
1581	itcl::body Rappture::FlowvisViewer::Pause {} {
1582	$_dispatcher cancel !play
1583
1584	# Toggle the button to "play" mode
1585	$itk_component(play) configure \
1586	-image [Rappture::icon flow-start] \
1587	-relief raised
1588	bind $itk_component(play) <ButtonPress> \
1589	[itcl::code $this Flow movie play toggle]
1590	}
1591
1592	# ----------------------------------------------------------------------
1593	# USAGE: FixSettings <what> ?<value>?
1594	#
1595	# Used internally to update rendering settings whenever parameters
1596	# change in the popup settings panel. Sends the new settings off
1597	# to the back end.
1598	# ----------------------------------------------------------------------
1599	itcl::body Rappture::FlowvisViewer::FixSettings {what {value ""}} {
1600	switch -- $what {
1601	light {
1602	if { $_first != "" } {
1603	set comp [lindex [$_first components] 0]
1604	set tag $_first-$comp
1605	set diffuse [expr {0.1*$_settings($this-light)}]
1606	set specular [expr {sqrt($_settings($this-light)+1.0)}]
1607	SendCmd "$tag configure -diffuse $diffuse -specular $specular"
1608	}
1609	}
1610	transp {
1611	if { $_first != "" } {
1612	set comp [lindex [$_first components] 0]
1613	set tag $_first-$comp
1614	set opacity [expr {0.2*$_settings($this-transp)+1}]
1615	SendCmd "$tag configure -opacity $opacity"
1616	}
1617	}
1618	opacity {
1619	if { $_first != "" && $_activeTf != "" } {
1620	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1621	set tf $_activeTf
1622	set _settings($this-$tf-opacity) $opacity
1623	updatetransferfuncs
1624	}
1625	}
1626
1627	thickness {
1628	if { $_first != "" && $_activeTf != "" } {
1629	set val $_settings($this-thickness)
1630	# Scale values between 0.00001 and 0.01000
1631	set sval [expr {0.0001*double($val)}]
1632	set tf $_activeTf
1633	set _settings($this-$tf-thickness) $sval
1634	updatetransferfuncs
1635	}
1636	}
1637	"outline" {
1638	if { $_first != "" } {
1639	set comp [lindex [$_first components] 0]
1640	set tag $_first-$comp
1641	SendCmd "$tag configure -outline $_settings($this-outline)"
1642	}
1643	}
1644	"isosurface" {
1645	if { [isconnected] } {
1646	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1647	}
1648	}
1649	"grid" {
1650	if { [isconnected] } {
1651	SendCmd "grid visible $_settings($this-grid)"
1652	}
1653	}
1654	"axes" {
1655	if { [isconnected] } {
1656	SendCmd "axis visible $_settings($this-axes)"
1657	}
1658	}
1659	"legend" {
1660	if { $_settings($this-legend) } {
1661	blt::table $itk_component(plotarea) \
1662	0,0 $itk_component(3dview) -fill both \
1663	1,0 $itk_component(legend) -fill x
1664	blt::table configure $itk_component(plotarea) r1 -resize none
1665	} else {
1666	blt::table forget $itk_component(legend)
1667	}
1668	}
1669	"volume" {
1670	if { $_first != "" } {
1671	set comp [lindex [$_first components] 0]
1672	set tag $_first-$comp
1673	SendCmd "$tag configure -volume $_settings($this-volume)"
1674	}
1675	}
1676	"xcutplane" - "ycutplane" - "zcutplane" {
1677	set axis [string range $what 0 0]
1678	set bool $_settings($this-$what)
1679	if { [isconnected] } {
1680	set vols [CurrentVolumeIds -cutplanes]
1681	SendCmd "cutplane state $bool $axis $vols"
1682	}
1683	if { $bool } {
1684	$itk_component(${axis}CutScale) configure -state normal \
1685	-troughcolor white
1686	} else {
1687	$itk_component(${axis}CutScale) configure -state disabled \
1688	-troughcolor grey82
1689	}
1690	}
1691	default {
1692	error "don't know how to fix $what"
1693	}
1694	}
1695	}
1696
1697	# ----------------------------------------------------------------------
1698	# USAGE: ResizeLegend
1699	#
1700	# Used internally to update the legend area whenever it changes size
1701	# or when the field changes. Asks the server to send a new legend
1702	# for the current field.
1703	# ----------------------------------------------------------------------
1704	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1705	set _resizeLegendPending 0
1706	set lineht [font metrics $itk_option(-font) -linespace]
1707	set w [expr {$_width-20}]
1708	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1709
1710	if { $_first == "" } {
1711	return
1712	}
1713	set comp [lindex [$_first components] 0]
1714	set tag $_first-$comp
1715	#set _activeTf [lindex $_obj2style($tag) 0]
1716	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1717	#SendCmd "legend $_activeTf $w $h"
1718	SendCmd "$tag legend $w $h"
1719	} else {
1720	# Can't do this as this will remove the items associated with the
1721	# isomarkers.
1722
1723	#$itk_component(legend) delete all
1724	}
1725	}
1726
1727	#
1728	# NameTransferFunc --
1729	#
1730	# Creates a transfer function name based on the <style> settings in the
1731	# library run.xml file. This placeholder will be used later to create
1732	# and send the actual transfer function once the data info has been sent
1733	# to us by the render server. [We won't know the volume limits until the
1734	# server parses the 3D data and sends back the limits via ReceiveData.]
1735	#
1736	# FIXME: The current way we generate transfer-function names completely
1737	# ignores the -markers option. The problem is that we are forced
1738	# to compute the name from an increasing complex set of values:
1739	# color, levels, marker, opacity. I think we're stuck doing it
1740	# now.
1741	#
1742	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1743	array set style {
1744	-color rainbow
1745	-levels 6
1746	-opacity 1.0
1747	-light 40
1748	-transp 50
1749	}
1750	array set style [lindex [$dataobj components -style $comp] 0]
1751	set _settings($this-light) $style(-light)
1752	set _settings($this-transp) $style(-transp)
1753	set _settings($this-opacity) [expr $style(-opacity) * 100]
1754	set tf "$style(-color):$style(-levels):$style(-opacity)"
1755	set _obj2style($dataobj-$comp) $tf
1756	lappend _style2objs($tf) $dataobj $comp
1757	return $tf
1758	}
1759
1760	#
1761	# ComputeTransferFunc --
1762	#
1763	# Computes and sends the transfer function to the render server. It's
1764	# assumed that the volume data limits are known and that the global
1765	# transfer-functions slider values have be setup. Both parts are
1766	# needed to compute the relative value (location) of the marker, and
1767	# the alpha map of the transfer function.
1768	#
1769	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1770	array set style {
1771	-color rainbow
1772	-levels 6
1773	-opacity 1.0
1774	-light 40
1775	-transp 50
1776	}
1777	set dataobj ""; set comp ""
1778	foreach {dataobj comp} $_style2objs($tf) break
1779	if { $dataobj == "" } {
1780	return 0
1781	}
1782	array set style [lindex [$dataobj components -style $comp] 0]
1783
1784
1785	# We have to parse the style attributes for a volume using this
1786	# transfer-function once. This sets up the initial isomarkers for the
1787	# transfer function. The user may add/delete markers, so we have to
1788	# maintain a list of markers for each transfer-function. We use the one
1789	# of the volumes (the first in the list) using the transfer-function as a
1790	# reference.
1791	#
1792	# FIXME: The current way we generate transfer-function names completely
1793	# ignores the -markers option. The problem is that we are forced
1794	# to compute the name from an increasing complex set of values:
1795	# color, levels, marker, opacity. I think the cow's out of the
1796	# barn on this one.
1797
1798	if { ![info exists _isomarkers($tf)] } {
1799	# Have to defer creation of isomarkers until we have data limits
1800	if { [info exists style(-markers)] } {
1801	ParseMarkersOption $tf $style(-markers)
1802	} else {
1803	ParseLevelsOption $tf $style(-levels)
1804	}
1805	}
1806	if {$style(-color) == "rainbow"} {
1807	set style(-color) "white:yellow:green:cyan:blue:magenta"
1808	}
1809	if { [info exists style(-nonuniformcolors)] } {
1810	foreach { value color } $style(-nonuniformcolors) {
1811	append cmap "$value [Color2RGB $color] "
1812	}
1813	} else {
1814	set clist [split $style(-color) :]
1815	set cmap "0.0 [Color2RGB white] "
1816	for {set i 0} {$i < [llength $clist]} {incr i} {
1817	set x [expr {double($i+1)/([llength $clist]+1)}]
1818	set color [lindex $clist $i]
1819	append cmap "$x [Color2RGB $color] "
1820	}
1821	append cmap "1.0 [Color2RGB $color]"
1822	}
1823	set tag $this-$tf
1824	if { ![info exists _settings($tag-opacity)] } {
1825	set _settings($tag-opacity) $style(-opacity)
1826	}
1827	set max $_settings($tag-opacity)
1828
1829	set isovalues {}
1830	foreach m $_isomarkers($tf) {
1831	lappend isovalues [$m relval]
1832	}
1833	# Sort the isovalues
1834	set isovalues [lsort -real $isovalues]
1835
1836	if { ![info exists _settings($tag-thickness)]} {
1837	set _settings($tag-thickness) 0.05
1838	}
1839	set delta $_settings($tag-thickness)
1840
1841	set first [lindex $isovalues 0]
1842	set last [lindex $isovalues end]
1843	set wmap ""
1844	if { $first == "" \|\| $first != 0.0 } {
1845	lappend wmap 0.0 0.0
1846	}
1847	foreach x $isovalues {
1848	set x1 [expr {$x-$delta-0.00001}]
1849	set x2 [expr {$x-$delta}]
1850	set x3 [expr {$x+$delta}]
1851	set x4 [expr {$x+$delta+0.00001}]
1852	if { $x1 < 0.0 } {
1853	set x1 0.0
1854	} elseif { $x1 > 1.0 } {
1855	set x1 1.0
1856	}
1857	if { $x2 < 0.0 } {
1858	set x2 0.0
1859	} elseif { $x2 > 1.0 } {
1860	set x2 1.0
1861	}
1862	if { $x3 < 0.0 } {
1863	set x3 0.0
1864	} elseif { $x3 > 1.0 } {
1865	set x3 1.0
1866	}
1867	if { $x4 < 0.0 } {
1868	set x4 0.0
1869	} elseif { $x4 > 1.0 } {
1870	set x4 1.0
1871	}
1872	# add spikes in the middle
1873	lappend wmap $x1 0.0
1874	lappend wmap $x2 $max
1875	lappend wmap $x3 $max
1876	lappend wmap $x4 0.0
1877	}
1878	if { $last == "" \|\| $last != 1.0 } {
1879	lappend wmap 1.0 0.0
1880	}
1881	SendCmd "transfunc define $tf { $cmap } { $wmap }\n"
1882	return [SendCmd "$dataobj-$comp configure -transferfunction $tf\n"]
1883	}
1884
1885	# ----------------------------------------------------------------------
1886	# CONFIGURATION OPTION: -plotbackground
1887	# ----------------------------------------------------------------------
1888	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1889	if { [isconnected] } {
1890	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1891	#fix this!
1892	#SendCmd "color background $r $g $b"
1893	}
1894	}
1895
1896	# ----------------------------------------------------------------------
1897	# CONFIGURATION OPTION: -plotforeground
1898	# ----------------------------------------------------------------------
1899	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1900	if { [isconnected] } {
1901	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1902	#fix this!
1903	#SendCmd "color background $r $g $b"
1904	}
1905	}
1906
1907	# ----------------------------------------------------------------------
1908	# CONFIGURATION OPTION: -plotoutline
1909	# ----------------------------------------------------------------------
1910	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1911	# Must check if we are connected because this routine is called from the
1912	# class body when the -plotoutline itk_option is defined. At that point
1913	# the FlowvisViewer class constructor hasn't been called, so we can't
1914	# start sending commands to visualization server.
1915	if { [isconnected] } {
1916	if {"" == $itk_option(-plotoutline)} {
1917	SendCmd "volume outline state off"
1918	} else {
1919	SendCmd "volume outline state on"
1920	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1921	}
1922	}
1923	}
1924
1925	#
1926	# The -levels option takes a single value that represents the number
1927	# of evenly distributed markers based on the current data range. Each
1928	# marker is a relative value from 0.0 to 1.0.
1929	#
1930	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1931	set c $itk_component(legend)
1932	regsub -all "," $levels " " levels
1933	if {[string is int $levels]} {
1934	for {set i 1} { $i <= $levels } {incr i} {
1935	set x [expr {double($i)/($levels+1)}]
1936	set m [Rappture::IsoMarker \#auto $c $this $tf]
1937	$m relval $x
1938	lappend _isomarkers($tf) $m
1939	}
1940	} else {
1941	foreach x $levels {
1942	set m [Rappture::IsoMarker \#auto $c $this $tf]
1943	$m relval $x
1944	lappend _isomarkers($tf) $m
1945	}
1946	}
1947	}
1948
1949	#
1950	# The -markers option takes a list of zero or more values (the values
1951	# may be separated either by spaces or commas) that have the following
1952	# format:
1953	#
1954	# N% Percent of current total data range. Converted to
1955	# to a relative value between 0.0 and 1.0.
1956	# N Absolute value of marker. If the marker is outside of
1957	# the current range, it will be displayed on the outer
1958	# edge of the legends, but it range it represents will
1959	# not be seen.
1960	#
1961	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1962	set c $itk_component(legend)
1963	regsub -all "," $markers " " markers
1964	foreach marker $markers {
1965	set n [scan $marker "%g%s" value suffix]
1966	if { $n == 2 && $suffix == "%" } {
1967	# ${n}% : Set relative value.
1968	set value [expr {$value * 0.01}]
1969	set m [Rappture::IsoMarker \#auto $c $this $tf]
1970	$m relval $value
1971	lappend _isomarkers($tf) $m
1972	} else {
1973	# ${n} : Set absolute value.
1974	set m [Rappture::IsoMarker \#auto $c $this $tf]
1975	$m absval $value
1976	lappend _isomarkers($tf) $m
1977	}
1978	}
1979	}
1980
1981	# ----------------------------------------------------------------------
1982	# USAGE: UndateTransferFuncs
1983	# ----------------------------------------------------------------------
1984	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
1985	$_dispatcher event -after 100 !send_transfunc
1986	}
1987
1988	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
1989	if { $_activeTf == "" } {
1990	error "active transfer function isn't set"
1991	}
1992	set tf $_activeTf
1993	set c $itk_component(legend)
1994	set m [Rappture::IsoMarker \#auto $c $this $tf]
1995	set w [winfo width $c]
1996	$m relval [expr {double($x-10)/($w-20)}]
1997	lappend _isomarkers($tf) $m
1998	updatetransferfuncs
1999	return 1
2000	}
2001
2002	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2003	set tf [$marker transferfunc]
2004	set bool 0
2005	if { [info exists _isomarkers($tf)] } {
2006	set list {}
2007	set marker [namespace tail $marker]
2008	foreach m $_isomarkers($tf) {
2009	set sx [$m screenpos]
2010	if { $m != $marker } {
2011	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2012	$marker relval [$m relval]
2013	itcl::delete object $m
2014	bell
2015	set bool 1
2016	continue
2017	}
2018	}
2019	lappend list $m
2020	}
2021	set _isomarkers($tf) $list
2022	updatetransferfuncs
2023	}
2024	return $bool
2025	}
2026
2027	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2028	set tf [$marker transferfunc]
2029	if { [info exists _isomarkers($tf)] } {
2030	set marker [namespace tail $marker]
2031	foreach m $_isomarkers($tf) {
2032	set sx [$m screenpos]
2033	if { $m != $marker } {
2034	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2035	$m activate $bool
2036	}
2037	}
2038	}
2039	return ""
2040	}
2041
2042	itcl::body Rappture::FlowvisViewer::limits { tf } {
2043	set _limits(vmin) 0.0
2044	set _limits(vmax) 1.0
2045	if { ![info exists _style2objs($tf)] } {
2046	puts stderr "no style2objs for $tf tf=($tf)"
2047	return [array get _limits]
2048	}
2049	set min ""; set max ""
2050	foreach {dataobj comp} $_style2objs($tf) {
2051	set tag $dataobj-$comp
2052	if { ![info exists _serverObjs($tag)] } {
2053	puts stderr "$tag not in serverObjs?"
2054	continue
2055	}
2056	if { ![info exists _limits($tag-min)] } {
2057	puts stderr "$tag no min?"
2058	continue
2059	}
2060	if { $min == "" \|\| $min > $_limits($tag-min) } {
2061	set min $_limits($tag-min)
2062	}
2063	if { $max == "" \|\| $max < $_limits($tag-max) } {
2064	set max $_limits($tag-max)
2065	}
2066	}
2067	if { $min != "" } {
2068	set _limits(vmin) $min
2069	}
2070	if { $max != "" } {
2071	set _limits(vmax) $max
2072	}
2073	return [array get _limits]
2074	}
2075
2076
2077
2078	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2079	foreach { key value } {
2080	grid 0
2081	axes 0
2082	outline 1
2083	volume 1
2084	legend 1
2085	particles 1
2086	lic 1
2087	} {
2088	set _settings($this-$key) $value
2089	}
2090
2091	set fg [option get $itk_component(hull) font Font]
2092	#set bfg [option get $itk_component(hull) boldFont Font]
2093
2094	set inner [$itk_component(main) insert end \
2095	-title "View Settings" \
2096	-icon [Rappture::icon wrench]]
2097	$inner configure -borderwidth 4
2098
2099	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2100	checkbutton $inner.isosurface \
2101	-text "Isosurface shading" \
2102	-variable [itcl::scope _settings($this-isosurface)] \
2103	-command [itcl::code $this FixSettings isosurface] \
2104	-font "Arial 9"
2105
2106	checkbutton $inner.axes \
2107	-text "Axes" \
2108	-variable [itcl::scope _settings($this-axes)] \
2109	-command [itcl::code $this FixSettings axes] \
2110	-font "Arial 9"
2111
2112	checkbutton $inner.grid \
2113	-text "Grid" \
2114	-variable [itcl::scope _settings($this-grid)] \
2115	-command [itcl::code $this FixSettings grid] \
2116	-font "Arial 9"
2117
2118	checkbutton $inner.outline \
2119	-text "Outline" \
2120	-variable [itcl::scope _settings($this-outline)] \
2121	-command [itcl::code $this FixSettings outline] \
2122	-font "Arial 9"
2123
2124	checkbutton $inner.legend \
2125	-text "Legend" \
2126	-variable [itcl::scope _settings($this-legend)] \
2127	-command [itcl::code $this FixSettings legend] \
2128	-font "Arial 9"
2129
2130	checkbutton $inner.volume \
2131	-text "Volume" \
2132	-variable [itcl::scope _settings($this-volume)] \
2133	-command [itcl::code $this FixSettings volume] \
2134	-font "Arial 9"
2135
2136	checkbutton $inner.particles \
2137	-text "Particles" \
2138	-variable [itcl::scope _settings($this-particles)] \
2139	-command [itcl::code $this FixSettings particles] \
2140	-font "Arial 9"
2141
2142	checkbutton $inner.lic \
2143	-text "Lic" \
2144	-variable [itcl::scope _settings($this-lic)] \
2145	-command [itcl::code $this FixSettings lic] \
2146	-font "Arial 9"
2147
2148	frame $inner.frame
2149
2150	blt::table $inner \
2151	0,0 $inner.axes -columnspan 2 -anchor w \
2152	1,0 $inner.grid -columnspan 2 -anchor w \
2153	2,0 $inner.outline -columnspan 2 -anchor w \
2154	3,0 $inner.volume -columnspan 2 -anchor w \
2155	4,0 $inner.legend -columnspan 2 -anchor w
2156
2157	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2158
2159	blt::table configure $inner r* -resize none
2160	blt::table configure $inner r5 -resize expand
2161	}
2162
2163	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2164	foreach { key value } {
2165	light 40
2166	transp 50
2167	opacity 100
2168	thickness 350
2169	} {
2170	set _settings($this-$key) $value
2171	}
2172
2173	set inner [$itk_component(main) insert end \
2174	-title "Volume Settings" \
2175	-icon [Rappture::icon volume-on]]
2176	$inner configure -borderwidth 4
2177
2178	set fg [option get $itk_component(hull) font Font]
2179	#set bfg [option get $itk_component(hull) boldFont Font]
2180
2181	checkbutton $inner.vol -text "Show volume" -font $fg \
2182	-text "Volume" \
2183	-variable [itcl::scope _settings($this-volume)] \
2184	-command [itcl::code $this FixSettings volume] \
2185	-font "Arial 9"
2186
2187	label $inner.shading -text "Shading:" -font $fg
2188
2189	label $inner.dim -text "Dim" -font $fg
2190	::scale $inner.light -from 0 -to 100 -orient horizontal \
2191	-variable [itcl::scope _settings($this-light)] \
2192	-width 10 \
2193	-showvalue off -command [itcl::code $this FixSettings light]
2194	label $inner.bright -text "Bright" -font $fg
2195
2196	label $inner.fog -text "Fog" -font $fg
2197	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2198	-variable [itcl::scope _settings($this-transp)] \
2199	-width 10 \
2200	-showvalue off -command [itcl::code $this FixSettings transp]
2201	label $inner.plastic -text "Plastic" -font $fg
2202
2203	label $inner.clear -text "Clear" -font $fg
2204	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2205	-variable [itcl::scope _settings($this-opacity)] \
2206	-width 10 \
2207	-showvalue off -command [itcl::code $this FixSettings opacity]
2208	label $inner.opaque -text "Opaque" -font $fg
2209
2210	label $inner.thin -text "Thin" -font $fg
2211	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2212	-variable [itcl::scope _settings($this-thickness)] \
2213	-width 10 \
2214	-showvalue off -command [itcl::code $this FixSettings thickness]
2215	label $inner.thick -text "Thick" -font $fg
2216
2217	blt::table $inner \
2218	0,0 $inner.vol -columnspan 4 -anchor w -pady 2 \
2219	1,0 $inner.shading -columnspan 4 -anchor w -pady {10 2} \
2220	2,0 $inner.dim -anchor e -pady 2 \
2221	2,1 $inner.light -columnspan 2 -pady 2 -fill x \
2222	2,3 $inner.bright -anchor w -pady 2 \
2223	3,0 $inner.fog -anchor e -pady 2 \
2224	3,1 $inner.transp -columnspan 2 -pady 2 -fill x \
2225	3,3 $inner.plastic -anchor w -pady 2 \
2226	4,0 $inner.clear -anchor e -pady 2 \
2227	4,1 $inner.opacity -columnspan 2 -pady 2 -fill x\
2228	4,3 $inner.opaque -anchor w -pady 2 \
2229	5,0 $inner.thin -anchor e -pady 2 \
2230	5,1 $inner.thickness -columnspan 2 -pady 2 -fill x\
2231	5,3 $inner.thick -anchor w -pady 2
2232
2233	if 0 {
2234	0,0 $inner.dim -anchor e -pady 2 \
2235	0,1 $inner.light -columnspan 2 -pady 2 \
2236	0,3 $inner.bright -anchor w -pady 2 \
2237	1,0 $inner.fog -anchor e -pady 2 \
2238	1,1 $inner.transp -columnspan 2 -pady 2 \
2239	1,3 $inner.plastic -anchor w -pady 2 \
2240	2,0 $inner.clear -anchor e -pady 2 \
2241	2,1 $inner.opacity -columnspan 2 -pady 2 \
2242	2,3 $inner.opaque -anchor w -pady 2 \
2243	3,0 $inner.thin -anchor e -pady 2 \
2244	3,1 $inner.thickness -columnspan 2 -pady 2 \
2245	3,3 $inner.thick -anchor w -pady 2
2246	}
2247	blt::table configure $inner c0 c1 c3 r* -resize none
2248	blt::table configure $inner r6 -resize expand
2249	}
2250
2251	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2252	set inner [$itk_component(main) insert end \
2253	-title "Cutplane Settings" \
2254	-icon [Rappture::icon cutbutton]]
2255	$inner configure -borderwidth 4
2256
2257	# X-value slicer...
2258	itk_component add xCutButton {
2259	Rappture::PushButton $inner.xbutton \
2260	-onimage [Rappture::icon x-cutplane] \
2261	-offimage [Rappture::icon x-cutplane] \
2262	-command [itcl::code $this FixSettings xcutplane] \
2263	-variable [itcl::scope _settings($this-xcutplane)]
2264	}
2265	Rappture::Tooltip::for $itk_component(xCutButton) \
2266	"Toggle the X cut plane on/off"
2267
2268	itk_component add xCutScale {
2269	::scale $inner.xval -from 100 -to 0 \
2270	-width 10 -orient vertical -showvalue off \
2271	-borderwidth 1 -highlightthickness 0 \
2272	-command [itcl::code $this Slice move x] \
2273	-variable [itcl::scope _settings($this-xcutposition)]
2274	} {
2275	usual
2276	ignore -borderwidth -highlightthickness
2277	}
2278	# Set the default cutplane value before disabling the scale.
2279	$itk_component(xCutScale) set 50
2280	$itk_component(xCutScale) configure -state disabled
2281	Rappture::Tooltip::for $itk_component(xCutScale) \
2282	"@[itcl::code $this SlicerTip x]"
2283
2284	# Y-value slicer...
2285	itk_component add yCutButton {
2286	Rappture::PushButton $inner.ybutton \
2287	-onimage [Rappture::icon y-cutplane] \
2288	-offimage [Rappture::icon y-cutplane] \
2289	-command [itcl::code $this FixSettings ycutplane] \
2290	-variable [itcl::scope _settings($this-ycutplane)]
2291	}
2292	Rappture::Tooltip::for $itk_component(yCutButton) \
2293	"Toggle the Y cut plane on/off"
2294
2295	itk_component add yCutScale {
2296	::scale $inner.yval -from 100 -to 0 \
2297	-width 10 -orient vertical -showvalue off \
2298	-borderwidth 1 -highlightthickness 0 \
2299	-command [itcl::code $this Slice move y] \
2300	-variable [itcl::scope _settings($this-ycutposition)]
2301	} {
2302	usual
2303	ignore -borderwidth -highlightthickness
2304	}
2305	Rappture::Tooltip::for $itk_component(yCutScale) \
2306	"@[itcl::code $this SlicerTip y]"
2307	# Set the default cutplane value before disabling the scale.
2308	$itk_component(yCutScale) set 50
2309	$itk_component(yCutScale) configure -state disabled
2310
2311	# Z-value slicer...
2312	itk_component add zCutButton {
2313	Rappture::PushButton $inner.zbutton \
2314	-onimage [Rappture::icon z-cutplane] \
2315	-offimage [Rappture::icon z-cutplane] \
2316	-command [itcl::code $this FixSettings zcutplane] \
2317	-variable [itcl::scope _settings($this-zcutplane)]
2318	}
2319	Rappture::Tooltip::for $itk_component(zCutButton) \
2320	"Toggle the Z cut plane on/off"
2321
2322	itk_component add zCutScale {
2323	::scale $inner.zval -from 100 -to 0 \
2324	-width 10 -orient vertical -showvalue off \
2325	-borderwidth 1 -highlightthickness 0 \
2326	-command [itcl::code $this Slice move z] \
2327	-variable [itcl::scope _settings($this-zcutposition)]
2328	} {
2329	usual
2330	ignore -borderwidth -highlightthickness
2331	}
2332	$itk_component(zCutScale) set 50
2333	$itk_component(zCutScale) configure -state disabled
2334	#$itk_component(zCutScale) configure -state disabled
2335	Rappture::Tooltip::for $itk_component(zCutScale) \
2336	"@[itcl::code $this SlicerTip z]"
2337
2338	blt::table $inner \
2339	1,1 $itk_component(xCutButton) \
2340	1,2 $itk_component(yCutButton) \
2341	1,3 $itk_component(zCutButton) \
2342	0,1 $itk_component(xCutScale) \
2343	0,2 $itk_component(yCutScale) \
2344	0,3 $itk_component(zCutScale) \
2345
2346	blt::table configure $inner r0 r1 c* -resize none
2347	blt::table configure $inner r2 c4 -resize expand
2348	blt::table configure $inner c0 -width 2
2349	blt::table configure $inner c1 c2 c3 -padx 2
2350	}
2351
2352	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2353	set inner [$itk_component(main) insert end \
2354	-title "Camera Settings" \
2355	-icon [Rappture::icon camera]]
2356	$inner configure -borderwidth 4
2357
2358	set labels { phi theta psi pan-x pan-y zoom }
2359	set row 0
2360	foreach tag $labels {
2361	label $inner.${tag}label -text $tag -font "Arial 9"
2362	entry $inner.${tag} -font "Arial 9" -bg white \
2363	-textvariable [itcl::scope _settings($this-$tag)]
2364	bind $inner.${tag} <KeyPress-Return> \
2365	[itcl::code $this camera set ${tag}]
2366	blt::table $inner \
2367	$row,0 $inner.${tag}label -anchor e -pady 2 \
2368	$row,1 $inner.${tag} -anchor w -pady 2
2369	blt::table configure $inner r$row -resize none
2370	incr row
2371	}
2372	blt::table configure $inner c0 c1 -resize none
2373	blt::table configure $inner c2 -resize expand
2374	blt::table configure $inner r$row -resize expand
2375	}
2376
2377	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2378	set flowobj ""
2379	foreach key [array names _obj2flow] {
2380	set flowobj $_obj2flow($key)
2381	break
2382	}
2383	if { $flowobj == "" } {
2384	return
2385	}
2386	if { [winfo exists $w.frame] } {
2387	destroy $w.frame
2388	}
2389	set inner [frame $w.frame]
2390	blt::table $w \
2391	5,0 $inner -fill both -columnspan 2 -anchor nw
2392	array set hints [$flowobj hints]
2393	checkbutton $inner.showstreams -text "Streams Plane" \
2394	-variable [itcl::scope _settings($this-streams)] \
2395	-command [itcl::code $this streams $key $hints(name)] \
2396	-font "Arial 9"
2397	Rappture::Tooltip::for $inner.showstreams $hints(description)
2398
2399	checkbutton $inner.showarrows -text "Arrows" \
2400	-variable [itcl::scope _settings($this-arrows)] \
2401	-command [itcl::code $this arrows $key $hints(name)] \
2402	-font "Arial 9"
2403
2404	label $inner.particles -text "Particles" -font "Arial 9 bold"
2405	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2406
2407	blt::table $inner \
2408	1,0 $inner.showstreams -anchor w \
2409	2,0 $inner.showarrows -anchor w
2410	blt::table configure $inner c0 c1 -resize none
2411	blt::table configure $inner c2 -resize expand
2412
2413	set row 3
2414	set particles [$flowobj particles]
2415	if { [llength $particles] > 0 } {
2416	blt::table $inner $row,0 $inner.particles -anchor w
2417	incr row
2418	}
2419	foreach part $particles {
2420	array unset info
2421	array set info $part
2422	set name $info(name)
2423	if { ![info exists _settings($this-particles-$name)] } {
2424	set _settings($this-particles-$name) $info(hide)
2425	}
2426	checkbutton $inner.part$row -text $info(label) \
2427	-variable [itcl::scope _settings($this-particles-$name)] \
2428	-onvalue 0 -offvalue 1 \
2429	-command [itcl::code $this particles $key $name] \
2430	-font "Arial 9"
2431	Rappture::Tooltip::for $inner.part$row $info(description)
2432	blt::table $inner $row,0 $inner.part$row -anchor w
2433	if { !$_settings($this-particles-$name) } {
2434	$inner.part$row select
2435	}
2436	incr row
2437	}
2438	set boxes [$flowobj boxes]
2439	if { [llength $boxes] > 0 } {
2440	blt::table $inner $row,0 $inner.boxes -anchor w
2441	incr row
2442	}
2443	foreach box $boxes {
2444	array unset info
2445	array set info $box
2446	set name $info(name)
2447	if { ![info exists _settings($this-box-$name)] } {
2448	set _settings($this-box-$name) $info(hide)
2449	}
2450	checkbutton $inner.box$row -text $info(label) \
2451	-variable [itcl::scope _settings($this-box-$name)] \
2452	-onvalue 0 -offvalue 1 \
2453	-command [itcl::code $this box $key $name] \
2454	-font "Arial 9"
2455	Rappture::Tooltip::for $inner.box$row $info(description)
2456	blt::table $inner $row,0 $inner.box$row -anchor w
2457	if { !$_settings($this-box-$name) } {
2458	$inner.box$row select
2459	}
2460	incr row
2461	}
2462	blt::table configure $inner r* -resize none
2463	blt::table configure $inner r$row -resize expand
2464	blt::table configure $inner c3 -resize expand
2465	event generate [winfo parent [winfo parent $w]] <Configure>
2466	}
2467
2468	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2469	set bool $_settings($this-particles-$name)
2470	SendCmd "$tag particles configure {$name} -hide $bool"
2471	}
2472
2473	itcl::body Rappture::FlowvisViewer::box { tag name } {
2474	set bool $_settings($this-box-$name)
2475	SendCmd "$tag box configure {$name} -hide $bool"
2476	}
2477
2478	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2479	set bool $_settings($this-streams)
2480	SendCmd "$tag configure -slice $bool"
2481	}
2482
2483	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2484	set bool $_settings($this-arrows)
2485	SendCmd "$tag configure -arrows no"
2486	}
2487
2488	# ----------------------------------------------------------------------
2489	# USAGE: Slice move x\|y\|z <newval>
2490	#
2491	# Called automatically when the user drags the slider to move the
2492	# cut plane that slices 3D data. Gets the current value from the
2493	# slider and moves the cut plane to the appropriate point in the
2494	# data set.
2495	# ----------------------------------------------------------------------
2496	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2497	switch -- $option {
2498	move {
2499	if {[llength $args] != 2} {
2500	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2501	}
2502	set axis [lindex $args 0]
2503	set newval [lindex $args 1]
2504	set newpos [expr {0.01*$newval}]
2505
2506	# show the current value in the readout
2507
2508	set ids [CurrentVolumeIds -cutplanes]
2509	SendCmd "cutplane position $newpos $axis $ids"
2510	}
2511	default {
2512	error "bad option \"$option\": should be axis, move, or volume"
2513	}
2514	}
2515	}
2516
2517	# ----------------------------------------------------------------------
2518	# USAGE: SlicerTip <axis>
2519	#
2520	# Used internally to generate a tooltip for the x/y/z slicer controls.
2521	# Returns a message that includes the current slicer value.
2522	# ----------------------------------------------------------------------
2523	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2524	set val [$itk_component(${axis}CutScale) get]
2525	# set val [expr {0.01*($val-50)
2526	# *($_limits(${axis}max)-$_limits(${axis}min))
2527	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2528	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2529	}
2530
2531
2532	itcl::body Rappture::FlowvisViewer::Resize {} {
2533	SendCmd "screen $_width $_height"
2534	set _resizePending 0
2535	}
2536
2537	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2538	set _width $w
2539	set _height $h
2540	if { !$_resizePending } {
2541	$_dispatcher event -after 200 !resize
2542	set _resizePending 1
2543	}
2544	}
2545
2546	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2547	if { !$_resizeLegendPending } {
2548	$_dispatcher event -after 100 !legend
2549	set _resizeLegendPending 1
2550	}
2551	}
2552
2553	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2554	set _flow(goto) $nSteps
2555	if { !$_gotoPending } {
2556	$_dispatcher event -after 1000 !goto
2557	set _gotoPending 1
2558	}
2559	}
2560
2561	# camera --
2562	itcl::body Rappture::FlowvisViewer::camera {option args} {
2563	switch -- $option {
2564	"show" {
2565	puts [array get _view]
2566	}
2567	"set" {
2568	set who [lindex $args 0]
2569	set x $_settings($this-$who)
2570	set code [catch { string is double $x } result]
2571	if { $code != 0 \|\| !$result } {
2572	set _settings($this-$who) $_view($who)
2573	return
2574	}
2575	switch -- $who {
2576	"pan-x" - "pan-y" {
2577	set _view($who) $_settings($this-$who)
2578	PanCamera
2579	}
2580	"phi" - "theta" - "psi" {
2581	set _view($who) $_settings($this-$who)
2582	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
2583	SendCmd "camera angle $xyz"
2584	}
2585	"zoom" {
2586	set _view($who) $_settings($this-$who)
2587	SendCmd "camera zoom $_view(zoom)"
2588	}
2589	}
2590	}
2591	}
2592	}
2593
2594	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2595	set tag "$dataobj-$comp"
2596	if { ![info exists _obj2flow($tag)] } {
2597	append cmd "flow add $tag\n"
2598	append cmd "$tag data follows $nbytes $extents\n"
2599	return $cmd
2600	}
2601	set flowobj $_obj2flow($tag)
2602	if { $flowobj == "" } {
2603	puts stderr "no flowobj"
2604	return ""
2605	}
2606	set cmd {}
2607	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2608	array set info [$flowobj hints]
2609	set _settings($this-volume) $info(volume)
2610	set _settings($this-outline) $info(outline)
2611	set _settings($this-arrows) $info(arrows)
2612	set _settings($this-duration) $info(duration)
2613	$itk_component(speed) value $info(speed)
2614	append cmd "flow add $tag"
2615	append cmd " -position $info(position)"
2616	append cmd " -axis $info(axis)"
2617	append cmd " -volume $info(volume)"
2618	append cmd " -outline $info(outline)"
2619	append cmd " -slice $info(streams)"
2620	append cmd " -arrows $info(arrows)\n"
2621	foreach part [$flowobj particles] {
2622	array unset info
2623	array set info $part
2624	set color [Color2RGB $info(color)]
2625	append cmd "$tag particles add $info(name)"
2626	append cmd " -position $info(position)"
2627	append cmd " -hide $info(hide)"
2628	append cmd " -axis $info(axis)"
2629	append cmd " -color {$color}"
2630	append cmd " -size $info(size)\n"
2631	}
2632	foreach box [$flowobj boxes] {
2633	array unset info
2634	set info(corner1) ""
2635	set info(corner2) ""
2636	array set info $box
2637	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2638	continue
2639	}
2640	set color [Color2RGB $info(color)]
2641	append cmd "$tag box add $info(name)"
2642	append cmd " -color {$color}"
2643	append cmd " -hide $info(hide)"
2644	append cmd " -linewidth $info(linewidth) "
2645	append cmd " -corner1 {$info(corner1)} "
2646	append cmd " -corner2 {$info(corner2)}\n"
2647	}
2648	append cmd "$tag data follows $nbytes $extents\n"
2649	return $cmd
2650	}
2651
2652
2653	#
2654	# flow --
2655	#
2656	# Called when the user clicks on the stop or play buttons
2657	# for flow visualization.
2658	#
2659	# $this flow play
2660	# $this flow stop
2661	# $this flow toggle
2662	# $this flow reset
2663	# $this flow pause
2664	# $this flow next
2665	#
2666	itcl::body Rappture::FlowvisViewer::flow { args } {
2667	set option [lindex $args 0]
2668	switch -- $option {
2669	"goto2" {
2670	puts stderr "actually sending \"flow goto $_flow(goto)\""
2671	SendCmd "flow goto $_flow(goto)"
2672	set _gotoPending 0
2673	}
2674	"goto" {
2675	puts stderr "flow goto to $_settings($this-currenttime)"
2676	# Figure out how many steps to the current time based upon
2677	# the speed and duration.
2678	set current $_settings($this-currenttime)
2679	set speed [$itk_component(speed) value]
2680	set time [str2millisecs $_settings($this-duration)]
2681	$itk_component(dial) configure -max $time
2682	set delay [expr int(round(500.0/$speed))]
2683	set timePerStep [expr {double($time) / $delay}]
2684	set nSteps [expr {int(ceil($current/$timePerStep))}]
2685	EventuallyGoto $nSteps
2686	}
2687	"speed" {
2688	set speed [$itk_component(speed) value]
2689	set _flow(delay) [expr int(round(500.0/$speed))]
2690	}
2691	"duration" {
2692	set max [str2millisecs $_settings($this-duration)]
2693	if { $max < 0 } {
2694	bell
2695	return
2696	}
2697	set _flow(duration) $max
2698	set _settings($this-duration) [millisecs2str $max]
2699	$itk_component(dial) configure -max $max
2700	}
2701	"off" {
2702	set _flow(state) 0
2703	$_dispatcher cancel !play
2704	$itk_component(play) deselect
2705	}
2706	"on" {
2707	flow speed
2708	flow duration
2709	set _flow(state) 1
2710	set _settings($this-currenttime) 0
2711	$itk_component(play) select
2712	}
2713	"stop" {
2714	if { $_flow(state) } {
2715	flow off
2716	flow reset
2717	}
2718	}
2719	"pause" {
2720	if { $_flow(state) } {
2721	flow off
2722	}
2723	}
2724	"play" {
2725	# If the flow is currently off, then restart it.
2726	if { !$_flow(state) } {
2727	flow on
2728	# If we're at the end of the flow, reset the flow.
2729	set _settings($this-currenttime) \
2730	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2731	if { $_settings($this-currenttime) >= $_flow(duration) } {
2732	set _settings($this-step) 1
2733	SendCmd "flow reset"
2734	}
2735	flow next
2736	}
2737	}
2738	"toggle" {
2739	if { $_settings($this-play) } {
2740	flow play
2741	} else {
2742	flow pause
2743	}
2744	}
2745	"reset" {
2746	set _settings($this-currenttime) 0
2747	SendCmd "flow reset"
2748	if { !$_flow(state) } {
2749	SendCmd "flow next"
2750	}
2751	}
2752	"next" {
2753	if { ![winfo viewable $itk_component(3dview)] } {
2754	flow stop
2755	return
2756	}
2757	set _settings($this-currenttime) \
2758	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2759	if { $_settings($this-currenttime) >= $_flow(duration) } {
2760	if { !$_settings($this-loop) } {
2761	flow off
2762	return
2763	}
2764	flow reset
2765	} else {
2766	SendCmd "flow next"
2767	}
2768	$_dispatcher event -after $_flow(delay) !play
2769	}
2770	default {
2771	error "bad option \"$option\": should be play, stop, toggle, or reset."
2772	}
2773	}
2774	}
2775
2776	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2777	switch -- $option {
2778	"start" {
2779	$_dispatcher dispatch $this !waiticon \
2780	"[itcl::code $this WaitIcon "next" $widget] ; list"
2781	set _icon 0
2782	$widget configure -image [Rappture::icon bigroller${_icon}]
2783	$_dispatcher event -after 100 !waiticon
2784	}
2785	"next" {
2786	incr _icon
2787	if { $_icon >= 8 } {
2788	set _icon 0
2789	}
2790	$widget configure -image [Rappture::icon bigroller${_icon}]
2791	$_dispatcher event -after 100 !waiticon
2792	}
2793	"stop" {
2794	$_dispatcher cancel !waiticon
2795	}
2796	}
2797	}
2798
2799	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2800	set token "print[incr _nextToken]"
2801	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2802	set $var ""
2803
2804	# Setup an automatic timeout procedure.
2805	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2806
2807	set popup .flowvisviewerprint
2808	if {![winfo exists $popup]} {
2809	Rappture::Balloon $popup -title "Generating file..."
2810	set inner [$popup component inner]
2811	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2812	label $inner.please -text "This may take a minute." -font "Arial 10"
2813	label $inner.icon -image [Rappture::icon bigroller0]
2814	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2815	-command [list set $var ""]
2816	blt::table $inner \
2817	0,0 $inner.title -columnspan 2 \
2818	1,0 $inner.please -anchor w \
2819	1,1 $inner.icon -anchor e \
2820	2,0 $inner.cancel -columnspan 2
2821	blt::table configure $inner r0 -pady 4
2822	blt::table configure $inner r2 -pady 4
2823	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2824	} else {
2825	set inner [$popup component inner]
2826	}
2827
2828	$_dispatcher event -after 60000 !pngtimeout
2829	WaitIcon start $inner.icon
2830	grab set -local $inner
2831	focus $inner.cancel
2832
2833	SendCmd "print $token $width $height"
2834
2835	$popup activate $widget below
2836	update
2837	# We wait here for either
2838	# 1) the png to be delivered or
2839	# 2) timeout or
2840	# 3) user cancels the operation.
2841	tkwait variable $var
2842
2843	# Clean up.
2844	$_dispatcher cancel !pngtimeout
2845	WaitIcon stop $inner.icon
2846	grab release $inner
2847	$popup deactivate
2848	update
2849
2850	if { $_hardcopy($this-$token) != "" } {
2851	return [list .png $_hardcopy($this-$token)]
2852	}
2853	return ""
2854	}
2855
2856	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2857	set token "movie[incr _nextToken]"
2858	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2859	set $var ""
2860
2861	# Setup an automatic timeout procedure.
2862	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2863	set popup .flowvisviewermovie
2864	if {![winfo exists $popup]} {
2865	Rappture::Balloon $popup -title "Generating movie..."
2866	set inner [$popup component inner]
2867	label $inner.title -text "Generating movie for download" \
2868	-font "Arial 10 bold"
2869	label $inner.please -text "This may take a few minutes." \
2870	-font "Arial 10"
2871	label $inner.icon -image [Rappture::icon bigroller0]
2872	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2873	-command [list set $var ""]
2874	blt::table $inner \
2875	0,0 $inner.title -columnspan 2 \
2876	1,0 $inner.please -anchor w \
2877	1,1 $inner.icon -anchor e \
2878	2,0 $inner.cancel -columnspan 2
2879	blt::table configure $inner r0 -pady 4
2880	blt::table configure $inner r2 -pady 4
2881	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2882	} else {
2883	set inner [$popup component inner]
2884	}
2885	# Timeout is set to 10 minutes.
2886	$_dispatcher event -after 600000 !movietimeout
2887	WaitIcon start $inner.icon
2888	grab set -local $inner
2889	focus $inner.cancel
2890
2891	flow duration
2892	flow speed
2893	set nframes [expr round($_flow(duration) / $_flow(delay))]
2894	set framerate [expr 1000.0 / $_flow(delay)]
2895
2896	# These are specific to MPEG1 video generation
2897	set framerate 25.0
2898	set bitrate 6.0e+6
2899
2900	set start [clock seconds]
2901	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2902
2903	$popup activate $widget below
2904	update
2905	# We wait here until
2906	# 1. the movie is delivered or
2907	# 2. we've timed out or
2908	# 3. the user has canceled the operation.b
2909	tkwait variable $var
2910
2911	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2912
2913	# Clean up.
2914	$_dispatcher cancel !movietimeout
2915	WaitIcon stop $inner.icon
2916	grab release $inner
2917	$popup deactivate
2918	destroy $popup
2919	update
2920
2921	# This will both cancel the movie generation (if it hasn't already
2922	# completed) and reset the flow.
2923	SendCmd "flow reset"
2924	if { $_hardcopy($this-$token) != "" } {
2925	return [list .mpg $_hardcopy($this-$token)]
2926	}
2927	return ""
2928	}
2929
2930	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2931	set parts [split $value :]
2932	set secs 0
2933	set mins 0
2934	if { [llength $parts] == 1 } {
2935	scan [lindex $parts 0] "%d" secs
2936	} else {
2937	scan [lindex $parts 1] "%d" secs
2938	scan [lindex $parts 0] "%d" mins
2939	}
2940	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2941	if { $ms > 600000.0 } {
2942	set ms 600000.0
2943	}
2944	if { $ms == 0.0 } {
2945	set ms 60000.0
2946	}
2947	return $ms
2948	}
2949
2950	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2951	set min [expr floor($value / 60000.0)]
2952	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2953	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2954	}
2955

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