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source: trunk/gui/scripts/flowvisviewer.tcl @ 3330

Last change on this file since 3330 was 3330, checked in by gah, 11 years ago
merge (by hand) with Rappture1.2 branch
File size: 101.0 KB

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

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