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source: branches/1.3/gui/scripts/flowvisviewer.tcl @ 4449

Last change on this file since 4449 was 4449, checked in by ldelgass, 10 years ago
Use GetColormapList? method
File size: 103.3 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	#
6	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7	# It connects to the Flowvis server running on a rendering farm, transmits
8	# data, and displays the results.
9	#
10	# ======================================================================
11	# AUTHOR: Michael McLennan, Purdue University
12	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
13	#
14	# See the file "license.terms" for information on usage and redistribution of
15	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16	# ======================================================================
17	package require Itk
18	package require BLT
19	package require Img
20
21	option add *FlowvisViewer.width 5i widgetDefault
22	option add FlowvisViewercursor crosshair widgetDefault
23	option add *FlowvisViewer.height 4i widgetDefault
24	option add *FlowvisViewer.foreground black widgetDefault
25	option add *FlowvisViewer.controlBackground gray widgetDefault
26	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27	option add *FlowvisViewer.plotBackground black widgetDefault
28	option add *FlowvisViewer.plotForeground white widgetDefault
29	option add *FlowvisViewer.plotOutline gray widgetDefault
30	option add *FlowvisViewer.font \
31	--helvetica-medium-r-normal--12-* widgetDefault
32
33	# must use this name -- plugs into Rappture::resources::load
34	proc FlowvisViewer_init_resources {} {
35	Rappture::resources::register \
36	nanovis_server Rappture::FlowvisViewer::SetServerList
37	}
38
39	itcl::class Rappture::FlowvisViewer {
40	inherit Rappture::VisViewer
41
42	itk_option define -plotforeground plotForeground Foreground ""
43	itk_option define -plotbackground plotBackground Background ""
44	itk_option define -plotoutline plotOutline PlotOutline ""
45
46	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 updatetransferfuncs {}
73
74	protected method Connect {}
75	protected method CurrentVolumeIds {{what -all}}
76	protected method Disconnect {}
77	protected method Resize {}
78	protected method ResizeLegend {}
79	protected method AdjustSetting {what {value ""}}
80	protected method InitSettings { args }
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 SendDataObjs {}
88	protected method SendTransferFuncs {}
89	protected method Slice {option args}
90	protected method SlicerTip {axis}
91	protected method Zoom {option}
92
93	# soon to be removed.
94	protected method Flow {option args}
95	protected method Play {}
96	protected method Pause {}
97
98
99	# The following methods are only used by this class.
100
101	private method AddIsoMarker { x y }
102	private method BuildCameraTab {}
103	private method BuildCutplanesTab {}
104	private method BuildViewTab {}
105	private method BuildVolumeTab {}
106	private method ComputeTransferFunc { tf }
107	private method EventuallyResize { w h }
108	private method EventuallyGoto { nSteps }
109	private method EventuallyResizeLegend { }
110	private method FlowCmd { dataobj comp nbytes extents }
111	private method GetMovie { widget width height }
112	private method GetPngImage { widget width height }
113	private method NameTransferFunc { dataobj comp }
114	private method PanCamera {}
115	private method ParseLevelsOption { tf levels }
116	private method ParseMarkersOption { tf markers }
117	private method WaitIcon { option widget }
118	private method str2millisecs { value }
119	private method millisecs2str { value }
120	private method GetFlowInfo { widget }
121	private method particles { tag name }
122	private method box { tag name }
123	private method streams { tag name }
124	private method arrows { tag name }
125	private method SetOrientation { side }
126
127	private variable _arcball ""
128	private variable _dlist "" ;# list of data objects
129	private variable _allDataObjs
130	private variable _obj2ovride ;# maps dataobj => style override
131	private variable _serverObjs ;# maps dataobj-component to volume ID
132	# in the server
133	private variable _sendobjs "" ;# list of data objs to send to server
134	private variable _recvObjs ;# list of data objs to send to server
135	private variable _obj2style ;# maps dataobj-component to transfunc
136	private variable _style2objs ;# maps tf back to list of
137	# dataobj-components using the tf.
138	private variable _obj2flow; # Maps dataobj-component to a flow.
139
140	private variable _reset 1; # Connection to server has been reset
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 _nextToken 0
149	private variable _icon 0
150	private variable _flow
151	# This
152	# indicates which isomarkers and transfer
153	# function to use when changing markers,
154	# opacity, or thickness.
155	private common _downloadPopup ;# download options from popup
156
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _resizeLegendPending 0
162	private variable _gotoPending 0
163	}
164
165	itk::usual FlowvisViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
174	set _serverType "nanovis"
175
176	# Draw legend event
177	$_dispatcher register !legend
178	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
179
180	# Send dataobjs event
181	$_dispatcher register !send_dataobjs
182	$_dispatcher dispatch $this !send_dataobjs \
183	"[itcl::code $this SendDataObjs]; list"
184
185	# Send transferfunctions event
186	$_dispatcher register !send_transfunc
187	$_dispatcher dispatch $this !send_transfunc \
188	"[itcl::code $this SendTransferFuncs]; list"
189
190	# Rebuild event.
191	$_dispatcher register !rebuild
192	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
193
194	# Resize event.
195	$_dispatcher register !resize
196	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
197
198	$_dispatcher register !play
199	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
200
201	# Draw legend event
202	$_dispatcher register !goto
203	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
204
205	$_dispatcher register !movietimeout
206	$_dispatcher register !waiticon
207
208	set _flow(state) 0
209
210	array set _downloadPopup {
211	format draft
212	}
213	#
214	# Populate parser with commands handle incoming requests
215	#
216	$_parser alias image [itcl::code $this ReceiveImage]
217	$_parser alias legend [itcl::code $this ReceiveLegend]
218	$_parser alias data [itcl::code $this ReceiveData]
219
220	# Initialize the view to some default parameters.
221	array set _view {
222	qw 0.853553
223	qx -0.353553
224	qy 0.353553
225	qz 0.146447
226	zoom 1.0
227	xpan 0
228	ypan 0
229	}
230	set _arcball [blt::arcball create 100 100]
231	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
232	$_arcball quaternion $q
233
234	set _limits(vmin) 0.0
235	set _limits(vmax) 1.0
236	set _reset 1
237
238	array set _settings [subst {
239	$this-qw $_view(qw)
240	$this-qx $_view(qx)
241	$this-qy $_view(qy)
242	$this-qz $_view(qz)
243	$this-zoom $_view(zoom)
244	$this-xpan $_view(xpan)
245	$this-ypan $_view(ypan)
246	$this-arrows 0
247	$this-currenttime 0
248	$this-duration 1:00
249	$this-loop 0
250	$this-play 0
251	$this-speed 500
252	$this-step 0
253	$this-streams 0
254	$this-volume 1
255	$this-xcutplane 0
256	$this-xcutposition 0
257	$this-ycutplane 0
258	$this-ycutposition 0
259	$this-zcutplane 0
260	$this-zcutposition 0
261	}]
262
263	itk_component add 3dview {
264	label $itk_component(plotarea).view -image $_image(plot) \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
271
272	set f [$itk_component(main) component controls]
273	itk_component add reset {
274	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
275	-highlightthickness 0 \
276	-image [Rappture::icon reset-view] \
277	-command [itcl::code $this Zoom reset]
278	} {
279	usual
280	ignore -highlightthickness
281	}
282	pack $itk_component(reset) -side top -padx 2 -pady 2
283	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
284
285	itk_component add zoomin {
286	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon zoom-in] \
289	-command [itcl::code $this Zoom in]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(zoomin) -side top -padx 2 -pady 2
295	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
296
297	itk_component add zoomout {
298	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-out] \
301	-command [itcl::code $this Zoom out]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomout) -side top -padx 2 -pady 2
307	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
308
309	itk_component add volume {
310	Rappture::PushButton $f.volume \
311	-onimage [Rappture::icon volume-on] \
312	-offimage [Rappture::icon volume-off] \
313	-command [itcl::code $this AdjustSetting volume] \
314	-variable [itcl::scope _settings($this-volume)]
315	}
316	$itk_component(volume) select
317	Rappture::Tooltip::for $itk_component(volume) \
318	"Toggle the volume cloud on/off"
319	pack $itk_component(volume) -padx 2 -pady 2
320
321	if { [catch {
322	BuildViewTab
323	BuildVolumeTab
324	BuildCutplanesTab
325	BuildCameraTab
326	} errs] != 0 } {
327	global errorInfo
328	puts stderr "errs=$errs errorInfo=$errorInfo"
329	}
330
331	bind $itk_component(3dview) <Configure> \
332	[itcl::code $this EventuallyResize %w %h]
333
334	# Legend
335	set _image(legend) [image create photo]
336	itk_component add legend {
337	canvas $itk_component(plotarea).legend \
338	-height 50 -highlightthickness 0 -background black
339	} {
340	usual
341	ignore -highlightthickness
342	rename -background -plotbackground plotBackground Background
343	}
344	bind $itk_component(legend) <Configure> \
345	[itcl::code $this EventuallyResizeLegend]
346
347	# Hack around the Tk panewindow. The problem is that the requested
348	# size of the 3d view isn't set until an image is retrieved from
349	# the server. So the panewindow uses the tiny size.
350	set w 10000
351	pack forget $itk_component(3dview)
352	blt::table $itk_component(plotarea) \
353	0,0 $itk_component(3dview) -fill both -reqwidth $w \
354	1,0 $itk_component(legend) -fill x
355	blt::table configure $itk_component(plotarea) r1 -resize none
356	# Create flow controls...
357
358	itk_component add flowcontrols {
359	frame $itk_interior.flowcontrols
360	} {
361	usual
362	rename -background -controlbackground controlBackground Background
363	}
364	pack forget $itk_component(main)
365	blt::table $itk_interior \
366	0,0 $itk_component(main) -fill both \
367	1,0 $itk_component(flowcontrols) -fill x
368	blt::table configure $itk_interior r1 -resize none
369
370	# Rewind
371	itk_component add rewind {
372	button $itk_component(flowcontrols).reset \
373	-borderwidth 1 -padx 1 -pady 1 \
374	-image [Rappture::icon flow-rewind] \
375	-command [itcl::code $this flow reset]
376	} {
377	usual
378	ignore -borderwidth
379	rename -highlightbackground -controlbackground controlBackground \
380	Background
381	}
382	Rappture::Tooltip::for $itk_component(rewind) \
383	"Rewind flow"
384
385	# Stop
386	itk_component add stop {
387	button $itk_component(flowcontrols).stop \
388	-borderwidth 1 -padx 1 -pady 1 \
389	-image [Rappture::icon flow-stop] \
390	-command [itcl::code $this flow stop]
391	} {
392	usual
393	ignore -borderwidth
394	rename -highlightbackground -controlbackground controlBackground \
395	Background
396	}
397	Rappture::Tooltip::for $itk_component(stop) \
398	"Stop flow"
399
400	# Play
401	itk_component add play {
402	Rappture::PushButton $itk_component(flowcontrols).play \
403	-onimage [Rappture::icon flow-pause] \
404	-offimage [Rappture::icon flow-play] \
405	-variable [itcl::scope _settings($this-play)] \
406	-command [itcl::code $this flow toggle]
407	}
408	set fg [option get $itk_component(hull) font Font]
409	Rappture::Tooltip::for $itk_component(play) \
410	"Play/Pause flow"
411
412	# Loop
413	itk_component add loop {
414	Rappture::PushButton $itk_component(flowcontrols).loop \
415	-onimage [Rappture::icon flow-loop] \
416	-offimage [Rappture::icon flow-loop] \
417	-variable [itcl::scope _settings($this-loop)]
418	}
419	Rappture::Tooltip::for $itk_component(loop) \
420	"Play continuously"
421
422	itk_component add dial {
423	Rappture::Flowdial $itk_component(flowcontrols).dial \
424	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
425	-linecolor "" -activelinecolor "" \
426	-min 0.0 -max 1.0 \
427	-variable [itcl::scope _settings($this-currenttime)] \
428	-knobimage [Rappture::icon knob2] -knobposition center@middle
429	} {
430	usual
431	ignore -dialprogresscolor
432	rename -background -controlbackground controlBackground Background
433	}
434	$itk_component(dial) current 0.0
435	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
436	# Duration
437	itk_component add duration {
438	entry $itk_component(flowcontrols).duration \
439	-textvariable [itcl::scope _settings($this-duration)] \
440	-bg white -width 6 -font "arial 9"
441	} {
442	usual
443	ignore -highlightthickness -background
444	}
445	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
446	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
447	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
448	Rappture::Tooltip::for $itk_component(duration) \
449	"Set duration of flow (format is min:sec)"
450
451
452	itk_component add durationlabel {
453	label $itk_component(flowcontrols).durationl \
454	-text "Duration:" -font $fg \
455	-highlightthickness 0
456	} {
457	usual
458	ignore -highlightthickness
459	rename -background -controlbackground controlBackground Background
460	}
461
462	itk_component add speedlabel {
463	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
464	-highlightthickness 0
465	} {
466	usual
467	ignore -highlightthickness
468	rename -background -controlbackground controlBackground Background
469	}
470
471	# Speed
472	itk_component add speed {
473	Rappture::Flowspeed $itk_component(flowcontrols).speed \
474	-min 1 -max 10 -width 3 -font "arial 9"
475	} {
476	usual
477	ignore -highlightthickness
478	rename -background -controlbackground controlBackground Background
479	}
480	Rappture::Tooltip::for $itk_component(speed) \
481	"Change speed of flow"
482
483	$itk_component(speed) value 1
484	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
485
486
487	blt::table $itk_component(flowcontrols) \
488	0,0 $itk_component(rewind) -padx {3 0} \
489	0,1 $itk_component(stop) -padx {2 0} \
490	0,2 $itk_component(play) -padx {2 0} \
491	0,3 $itk_component(loop) -padx {2 0} \
492	0,4 $itk_component(dial) -fill x -padx {2 0 } \
493	0,5 $itk_component(duration) -padx { 0 0} \
494	0,7 $itk_component(speed) -padx {2 3}
495
496	# 0,6 $itk_component(speedlabel) -padx {2 0}
497	blt::table configure $itk_component(flowcontrols) c* -resize none
498	blt::table configure $itk_component(flowcontrols) c4 -resize both
499	blt::table configure $itk_component(flowcontrols) r0 -pady 1
500	# Bindings for rotation via mouse
501	bind $itk_component(3dview) <ButtonPress-1> \
502	[itcl::code $this Rotate click %x %y]
503	bind $itk_component(3dview) <B1-Motion> \
504	[itcl::code $this Rotate drag %x %y]
505	bind $itk_component(3dview) <ButtonRelease-1> \
506	[itcl::code $this Rotate release %x %y]
507
508	bind $itk_component(3dview) <Configure> \
509	[itcl::code $this EventuallyResize %w %h]
510
511	# Bindings for panning via mouse
512	bind $itk_component(3dview) <ButtonPress-2> \
513	[itcl::code $this Pan click %x %y]
514	bind $itk_component(3dview) <B2-Motion> \
515	[itcl::code $this Pan drag %x %y]
516	bind $itk_component(3dview) <ButtonRelease-2> \
517	[itcl::code $this Pan release %x %y]
518
519	# Bindings for panning via keyboard
520	bind $itk_component(3dview) <KeyPress-Left> \
521	[itcl::code $this Pan set -10 0]
522	bind $itk_component(3dview) <KeyPress-Right> \
523	[itcl::code $this Pan set 10 0]
524	bind $itk_component(3dview) <KeyPress-Up> \
525	[itcl::code $this Pan set 0 -10]
526	bind $itk_component(3dview) <KeyPress-Down> \
527	[itcl::code $this Pan set 0 10]
528	bind $itk_component(3dview) <Shift-KeyPress-Left> \
529	[itcl::code $this Pan set -2 0]
530	bind $itk_component(3dview) <Shift-KeyPress-Right> \
531	[itcl::code $this Pan set 2 0]
532	bind $itk_component(3dview) <Shift-KeyPress-Up> \
533	[itcl::code $this Pan set 0 -2]
534	bind $itk_component(3dview) <Shift-KeyPress-Down> \
535	[itcl::code $this Pan set 0 2]
536
537	# Bindings for zoom via keyboard
538	bind $itk_component(3dview) <KeyPress-Prior> \
539	[itcl::code $this Zoom out]
540	bind $itk_component(3dview) <KeyPress-Next> \
541	[itcl::code $this Zoom in]
542
543	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
544
545	if {[string equal "x11" [tk windowingsystem]]} {
546	# Bindings for zoom via mouse
547	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
548	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
549	}
550
551	set _image(download) [image create photo]
552
553	eval itk_initialize $args
554
555	Connect
556	}
557
558	# ----------------------------------------------------------------------
559	# DESTRUCTOR
560	# ----------------------------------------------------------------------
561	itcl::body Rappture::FlowvisViewer::destructor {} {
562	set _sendobjs "" ;# stop any send in progress
563	$_dispatcher cancel !rebuild
564	$_dispatcher cancel !send_dataobjs
565	$_dispatcher cancel !send_transfunc
566	image delete $_image(plot)
567	image delete $_image(legend)
568	image delete $_image(download)
569	catch { blt::arcball destroy $_arcball }
570	array unset _settings $this-*
571	}
572
573	# ----------------------------------------------------------------------
574	# USAGE: add <dataobj> ?<settings>?
575	#
576	# Clients use this to add a data object to the plot. The optional
577	# <settings> are used to configure the plot. Allowed settings are
578	# -color, -brightness, -width, -linestyle, and -raise.
579	# ----------------------------------------------------------------------
580	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
581	array set params {
582	-color auto
583	-width 1
584	-linestyle solid
585	-brightness 0
586	-raise 0
587	-description ""
588	-param ""
589	}
590	array set params $settings
591	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
592	# can't handle -autocolors yet
593	set params(-color) black
594	}
595	foreach comp [$dataobj components] {
596	set flowobj [$dataobj flowhints $comp]
597	if { $flowobj == "" } {
598	puts stderr "no flowhints $dataobj-$comp"
599	continue
600	}
601	set _obj2flow($dataobj-$comp) $flowobj
602	}
603	set pos [lsearch -exact $_dlist $dataobj]
604	if {$pos < 0} {
605	lappend _dlist $dataobj
606	set _allDataObjs($dataobj) 1
607	set _obj2ovride($dataobj-color) $params(-color)
608	set _obj2ovride($dataobj-width) $params(-width)
609	set _obj2ovride($dataobj-raise) $params(-raise)
610	$_dispatcher event -idle !rebuild
611	}
612	}
613
614	# ----------------------------------------------------------------------
615	# USAGE: get ?-objects?
616	# USAGE: get ?-image 3dview\|legend?
617	#
618	# Clients use this to query the list of objects being plotted, in
619	# order from bottom to top of this result. The optional "-image"
620	# flag can also request the internal images being shown.
621	# ----------------------------------------------------------------------
622	itcl::body Rappture::FlowvisViewer::get {args} {
623	if {[llength $args] == 0} {
624	set args "-objects"
625	}
626
627	set op [lindex $args 0]
628	switch -- $op {
629	-objects {
630	# put the dataobj list in order according to -raise options
631	set dlist $_dlist
632	foreach obj $dlist {
633	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
634	set i [lsearch -exact $dlist $obj]
635	if {$i >= 0} {
636	set dlist [lreplace $dlist $i $i]
637	lappend dlist $obj
638	}
639	}
640	}
641	return $dlist
642	}
643	-image {
644	if {[llength $args] != 2} {
645	error "wrong # args: should be \"get -image 3dview\|legend\""
646	}
647	switch -- [lindex $args end] {
648	3dview {
649	return $_image(plot)
650	}
651	legend {
652	return $_image(legend)
653	}
654	default {
655	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
656	}
657	}
658	}
659	default {
660	error "bad option \"$op\": should be -objects or -image"
661	}
662	}
663	}
664
665	# ----------------------------------------------------------------------
666	# USAGE: delete ?<dataobj1> <dataobj2> ...?
667	#
668	# Clients use this to delete a dataobj from the plot. If no dataobjs
669	# are specified, then all dataobjs are deleted. No data objects are
670	# deleted. They are only removed from the display list.
671	#
672	# ----------------------------------------------------------------------
673	itcl::body Rappture::FlowvisViewer::delete {args} {
674	flow stop
675	if {[llength $args] == 0} {
676	set args $_dlist
677	}
678
679	# Delete all specified dataobjs
680	set changed 0
681	foreach dataobj $args {
682	set pos [lsearch -exact $_dlist $dataobj]
683	if { $pos >= 0 } {
684	foreach comp [$dataobj components] {
685	array unset _limits $dataobj-$comp-*
686	}
687	set _dlist [lreplace $_dlist $pos $pos]
688	array unset _obj2ovride $dataobj-*
689	array unset _obj2flow $dataobj-*
690	array unset _serverObjs $dataobj-*
691	array unset _obj2style $dataobj-*
692	set changed 1
693	}
694	}
695	# If anything changed, then rebuild the plot
696	if {$changed} {
697	# Repair the reverse lookup
698	foreach tf [array names _style2objs] {
699	set list {}
700	foreach {dataobj comp} $_style2objs($tf) break
701	if { [info exists _serverObjs($dataobj-$comp)] } {
702	lappend list $dataobj $comp
703	}
704	if { $list == "" } {
705	array unset _style2objs $tf
706	} else {
707	set _style2objs($tf) $list
708	}
709	}
710	$_dispatcher event -idle !rebuild
711	}
712	}
713
714	# ----------------------------------------------------------------------
715	# USAGE: scale ?<data1> <data2> ...?
716	#
717	# Sets the default limits for the overall plot according to the
718	# limits of the data for all of the given <data> objects. This
719	# accounts for all objects--even those not showing on the screen.
720	# Because of this, the limits are appropriate for all objects as
721	# the user scans through data in the ResultSet viewer.
722	# ----------------------------------------------------------------------
723	itcl::body Rappture::FlowvisViewer::scale {args} {
724	foreach val {xmin xmax ymin ymax vmin vmax} {
725	set _limits($val) ""
726	}
727	foreach obj $args {
728	foreach axis {x y v} {
729
730	foreach { min max } [$obj limits $axis] break
731
732	if {"" != $min && "" != $max} {
733	if {"" == $_limits(${axis}min)} {
734	set _limits(${axis}min) $min
735	set _limits(${axis}max) $max
736	} else {
737	if {$min < $_limits(${axis}min)} {
738	set _limits(${axis}min) $min
739	}
740	if {$max > $_limits(${axis}max)} {
741	set _limits(${axis}max) $max
742	}
743	}
744	}
745	}
746	}
747	}
748
749	# ----------------------------------------------------------------------
750	# USAGE: download coming
751	# USAGE: download controls <downloadCommand>
752	# USAGE: download now
753	#
754	# Clients use this method to create a downloadable representation
755	# of the plot. Returns a list of the form {ext string}, where
756	# "ext" is the file extension (indicating the type of data) and
757	# "string" is the data itself.
758	# ----------------------------------------------------------------------
759	itcl::body Rappture::FlowvisViewer::download {option args} {
760	set popup .flowvisviewerdownload
761	switch $option {
762	coming {
763	if {[catch {
764	blt::winop snap $itk_component(plotarea) $_image(download)
765	}]} {
766	$_image(download) configure -width 1 -height 1
767	$_image(download) put #000000
768	}
769	}
770	controls {
771	if {![winfo exists $popup]} {
772	# if we haven't created the popup yet, do it now
773	Rappture::Balloon $popup \
774	-title "[Rappture::filexfer::label downloadWord] as..."
775	set inner [$popup component inner]
776	label $inner.summary -text "" -anchor w
777	pack $inner.summary -side top
778	set img $_image(plot)
779	set res "[image width $img]x[image height $img]"
780	radiobutton $inner.draft -text "Image (draft $res)" \
781	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
782	-value draft
783	pack $inner.draft -anchor w
784
785	set res "640x480"
786	radiobutton $inner.medium -text "Movie (standard $res)" \
787	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
788	-value $res
789	pack $inner.medium -anchor w
790
791	set res "1024x768"
792	radiobutton $inner.high -text "Movie (high quality $res)" \
793	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
794	-value $res
795	pack $inner.high -anchor w
796	button $inner.go -text [Rappture::filexfer::label download] \
797	-command [lindex $args 0]
798	pack $inner.go -pady 4
799	$inner.draft select
800	} else {
801	set inner [$popup component inner]
802	}
803	set num [llength [get]]
804	set num [expr {($num == 1) ? "1 result" : "$num results"}]
805	set word [Rappture::filexfer::label downloadWord]
806	$inner.summary configure -text "$word $num in the following format:"
807	update idletasks ;# fix initial sizes
808	update
809	return $popup
810	}
811	now {
812	if { [winfo exists $popup] } {
813	$popup deactivate
814	}
815	switch -- $_downloadPopup(format) {
816	draft {
817	# Get the image data (as base64) and decode it back to
818	# binary. This is better than writing to temporary
819	# files. When we switch to the BLT picture image it
820	# won't be necessary to decode the image data.
821	set bytes [$_image(plot) data -format "jpeg -quality 100"]
822	set bytes [Rappture::encoding::decode -as b64 $bytes]
823	return [list .jpg $bytes]
824	}
825	"640x480" {
826	return [$this GetMovie [lindex $args 0] 640 480]
827	}
828	"1024x768" {
829	return [$this GetMovie [lindex $args 0] 1024 768]
830	}
831	default {
832	error "bad download format $_downloadPopup(format)"
833	}
834	}
835	}
836	default {
837	error "bad option \"$option\": should be coming, controls, now"
838	}
839	}
840	}
841
842	# ----------------------------------------------------------------------
843	# USAGE: Connect ?<host:port>,<host:port>...?
844	#
845	# Clients use this method to establish a connection to a new
846	# server, or to reestablish a connection to the previous server.
847	# Any existing connection is automatically closed.
848	# ----------------------------------------------------------------------
849	itcl::body Rappture::FlowvisViewer::Connect {} {
850	set _hosts [GetServerList "nanovis"]
851	if { "" == $_hosts } {
852	return 0
853	}
854	set _reset 1
855	set result [VisViewer::Connect $_hosts]
856	if { $result } {
857	if { $_reportClientInfo } {
858	# Tell the server the viewer, hub, user and session.
859	# Do this immediately on connect before buffering any commands
860	global env
861
862	set info {}
863	set user "???"
864	if { [info exists env(USER)] } {
865	set user $env(USER)
866	}
867	set session "???"
868	if { [info exists env(SESSION)] } {
869	set session $env(SESSION)
870	}
871	lappend info "hub" [exec hostname]
872	lappend info "client" "flowvisviewer"
873	lappend info "user" $user
874	lappend info "session" $session
875	SendCmd "clientinfo [list $info]"
876	}
877
878	set w [winfo width $itk_component(3dview)]
879	set h [winfo height $itk_component(3dview)]
880	EventuallyResize $w $h
881	}
882	return $result
883	}
884
885	#
886	# isconnected --
887	#
888	# Indicates if we are currently connected to the visualization server.
889	#
890	itcl::body Rappture::FlowvisViewer::isconnected {} {
891	return [VisViewer::IsConnected]
892	}
893
894	#
895	# disconnect --
896	#
897	itcl::body Rappture::FlowvisViewer::disconnect {} {
898	Disconnect
899	}
900
901	#
902	# Disconnect --
903	#
904	# Clients use this method to disconnect from the current rendering
905	# server.
906	#
907	itcl::body Rappture::FlowvisViewer::Disconnect {} {
908	VisViewer::Disconnect
909
910	# disconnected -- no more data sitting on server
911	array unset _serverObjs
912	set _sendobjs ""
913	}
914
915	# ----------------------------------------------------------------------
916	# USAGE: SendDataObjs
917	#
918	# Used internally to send a series of volume objects off to the
919	# server. Sends each object, a little at a time, with updates in
920	# between so the interface doesn't lock up.
921	# ----------------------------------------------------------------------
922	itcl::body Rappture::FlowvisViewer::SendDataObjs {} {
923	blt::busy hold $itk_component(hull)
924	foreach dataobj $_sendobjs {
925	foreach comp [$dataobj components] {
926	# Send the data as one huge base64-encoded mess -- yuck!
927	set data [$dataobj blob $comp]
928	set nbytes [string length $data]
929	set extents [$dataobj extents $comp]
930
931	# I have a field. Is a vector field or a volume field?
932	if { $extents == 1 } {
933	set cmd "volume data follows $nbytes $dataobj-$comp\n"
934	} else {
935	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
936	if { $cmd == "" } {
937	puts stderr "no command"
938	continue
939	}
940	}
941	f { ![SendBytes $cmd] } {
942	puts stderr "can't send"
943	return
944	}
945	if { ![SendBytes $data] } {
946	puts stderr "can't send"
947	return
948	}
949	NameTransferFunc $dataobj $comp
950	set _recvObjs($dataobj-$comp) 1
951	}
952	}
953	set _sendobjs ""
954	blt::busy release $itk_component(hull)
955
956	# Turn on buffering of commands to the server. We don't want to
957	# be preempted by a server disconnect/reconnect (which automatically
958	# generates a new call to Rebuild).
959	StartBufferingCommands
960
961	# activate the proper volume
962	set _first [lindex [get] 0]
963	if { "" != $_first } {
964	set axis [$_first hints updir]
965	if {"" != $axis} {
966	SendCmd "up $axis"
967	}
968
969	if 0 {
970	set location [$_first hints camera]
971	if { $location != "" } {
972	array set _view $location
973	}
974	set _settings($this-qw) $_view(qw)
975	set _settings($this-qx) $_view(qx)
976	set _settings($this-qy) $_view(qy)
977	set _settings($this-qz) $_view(qz)
978	set _settings($this-xpan) $_view(xpan)
979	set _settings($this-ypan) $_view(ypan)
980	set _settings($this-zoom) $_view(zoom)
981	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
982	$_arcball quaternion $q
983	SendCmd "camera orient $q"
984	SendCmd "camera reset"
985	PanCamera
986	SendCmd "camera zoom $_view(zoom)"
987	}
988	# The active transfer function is by default the first component of
989	# the first data object. This assumes that the data is always
990	# successfully transferred.
991	set comp [lindex [$_first components] 0]
992	set _activeTf [lindex $_obj2style($_first-$comp) 0]
993	}
994
995	SendCmd "flow reset"
996	StopBufferingCommands
997	}
998
999	# ----------------------------------------------------------------------
1000	# USAGE: SendTransferFuncs
1001	# ----------------------------------------------------------------------
1002	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
1003	if { $_activeTf == "" } {
1004	puts stderr "no active tf"
1005	return
1006	}
1007	set tf $_activeTf
1008	if { $_first == "" } {
1009	puts stderr "no first"
1010	return
1011	}
1012
1013	# Ensure that the global opacity and thickness settings (in the slider
1014	# settings widgets) are used for the active transfer-function. Update the
1015	# values in the _settings varible.
1016	set value $_settings($this-opacity)
1017	set opacity [expr { double($value) * 0.01 }]
1018	set _settings($this-$tf-opacity) $opacity
1019	set value $_settings($this-thickness)
1020	# Scale values between 0.00001 and 0.01000
1021	set thickness [expr {double($value) * 0.0001}]
1022	set _settings($this-$tf-thickness) $thickness
1023
1024	foreach key [array names _obj2style $_first-*] {
1025	if { [info exists _obj2style($key)] } {
1026	foreach tf $_obj2style($key) {
1027	ComputeTransferFunc $tf
1028	}
1029	}
1030	}
1031	EventuallyResizeLegend
1032	}
1033
1034	# ----------------------------------------------------------------------
1035	# USAGE: ReceiveImage -bytes $size -type $type -token $token
1036	#
1037	# Invoked automatically whenever the "image" command comes in from
1038	# the rendering server. Indicates that binary image data with the
1039	# specified <size> will follow.
1040	# ----------------------------------------------------------------------
1041	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
1042	array set info {
1043	-token "???"
1044	-bytes 0
1045	-type image
1046	}
1047	array set info $args
1048	set bytes [ReceiveBytes $info(-bytes)]
1049	ReceiveEcho <<line "<read $info(-bytes) bytes"
1050	switch -- $info(-type) {
1051	"image" {
1052	$_image(plot) configure -data $bytes
1053	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1054	}
1055	"print" {
1056	set tag $this-$info(-token)
1057	set _hardcopy($tag) $bytes
1058	}
1059	"movie" {
1060	set tag $this-$info(-token)
1061	set _hardcopy($tag) $bytes
1062	}
1063	default {
1064	puts stderr "unknown download type $info(-type)"
1065	}
1066	}
1067	}
1068
1069	#
1070	# ReceiveLegend --
1071	#
1072	# The procedure is the response from the render server to each "legend"
1073	# command. The server sends back a "legend" command invoked our
1074	# the slave interpreter. The purpose is to collect data of the image
1075	# representing the legend in the canvas. In addition, the isomarkers
1076	# of the active transfer function are displayed.
1077	#
1078	# I don't know is this is the right place to display the isomarkers.
1079	# I don't know all the different paths used to draw the plot. There's
1080	# "Rebuild", "add", etc.
1081	#
1082	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1083	if { ![isconnected] } {
1084	return
1085	}
1086	#puts stderr "receive legend $tag $vmin $vmax $size"
1087	set bytes [ReceiveBytes $size]
1088	$_image(legend) configure -data $bytes
1089	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1090
1091	set c $itk_component(legend)
1092	set w [winfo width $c]
1093	set h [winfo height $c]
1094	set lx 10
1095	# FIXME: I don't know what I have to do this for the 2D flow
1096	# example. Otherwise the canvas background is white.
1097	# I'll get to this when we add background changes into
1098	# nanvis.
1099	$c configure -background black
1100	set ly [expr {$h - 1}]
1101	if {"" == [$c find withtag transfunc]} {
1102	$c create image 10 10 -anchor nw \
1103	-image $_image(legend) -tags transfunc
1104	$c create text $lx $ly -anchor sw \
1105	-fill $itk_option(-plotforeground) -tags "limits vmin"
1106	$c create text [expr {$w-$lx}] $ly -anchor se \
1107	-fill $itk_option(-plotforeground) -tags "limits vmax"
1108	$c lower transfunc
1109	$c bind transfunc <ButtonRelease-1> \
1110	[itcl::code $this AddIsoMarker %x %y]
1111	}
1112	# Display the markers used by the active transfer function.
1113	set tf $_obj2style($tag)
1114	array set limits [limits $tf]
1115	$c itemconfigure vmin -text [format %.2g $limits(vmin)]
1116	$c coords vmin $lx $ly
1117
1118	$c itemconfigure vmax -text [format %.2g $limits(vmax)]
1119	$c coords vmax [expr {$w-$lx}] $ly
1120
1121	if { [info exists _isomarkers($tf)] } {
1122	foreach m $_isomarkers($tf) {
1123	$m visible yes
1124	}
1125	}
1126	}
1127
1128	#
1129	# ReceiveData --
1130	#
1131	# The procedure is the response from the render server to each "data
1132	# follows" command. The server sends back a "data" command invoked our
1133	# the slave interpreter. The purpose is to collect the min/max of the
1134	# volume sent to the render server. Since the client (flowvisviewer)
1135	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1136	# tell us what the limits are. Once we've received the limits to all
1137	# the data we've sent (tracked by _recvObjs) we can then determine
1138	# what the transfer functions are for these # volumes.
1139	#
1140	# Note: There is a considerable tradeoff in having the server report
1141	# back what the data limits are. It means that much of the code
1142	# having to do with transfer-functions has to wait for the data
1143	# to come back, since the isomarkers are calculated based upon
1144	# the data limits. The client code is much messier because of
1145	# this. The alternative is to parse any of the 3D formats on the
1146	# client side.
1147	#
1148	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1149	if { ![isconnected] } {
1150	return
1151	}
1152	# Arguments from server are name value pairs. Stuff them in an array.
1153	array set values $args
1154	set tag $values(tag)
1155	set parts [split $tag -]
1156	set dataobj [lindex $parts 0]
1157	set _serverObjs($tag) 0
1158	set _limits($tag-min) $values(min); # Minimum value of the volume.
1159	set _limits($tag-max) $values(max); # Maximum value of the volume.
1160	unset _recvObjs($tag)
1161	if { [array size _recvObjs] == 0 } {
1162	updatetransferfuncs
1163	}
1164	}
1165
1166	#
1167	# Rebuild --
1168	#
1169	# Called automatically whenever something changes that affects the data
1170	# in the widget. Clears any existing data and rebuilds the widget to
1171	# display new data.
1172	#
1173	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1174	set w [winfo width $itk_component(3dview)]
1175	set h [winfo height $itk_component(3dview)]
1176	if { $w < 2 \|\| $h < 2 } {
1177	$_dispatcher event -idle !rebuild
1178	return
1179	}
1180
1181	# Turn on buffering of commands to the server. We don't want to
1182	# be preempted by a server disconnect/reconnect (which automatically
1183	# generates a new call to Rebuild).
1184	StartBufferingCommands
1185
1186	# Hide all the isomarkers. Can't remove them. Have to remember the
1187	# settings since the user may have created/deleted/moved markers.
1188
1189	foreach tf [array names _isomarkers] {
1190	foreach m $_isomarkers($tf) {
1191	$m visible no
1192	}
1193	}
1194
1195	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1196	set _width $w
1197	set _height $h
1198	$_arcball resize $w $h
1199	Resize
1200	}
1201
1202	set _first ""
1203	foreach dataobj [get] {
1204	foreach comp [$dataobj components] {
1205	set tag $dataobj-$comp
1206	# Send the data as one huge base64-encoded mess -- yuck!
1207	set data [$dataobj blob $comp]
1208	set nbytes [string length $data]
1209	if { $_reportClientInfo } {
1210	set info {}
1211	lappend info "tool_id" [$dataobj hints toolId]
1212	lappend info "tool_name" [$dataobj hints toolName]
1213	lappend info "tool_version" [$dataobj hints toolRevision]
1214	lappend info "tool_title" [$dataobj hints toolTitle]
1215	lappend info "dataset_label" [$dataobj hints label]
1216	lappend info "dataset_size" $nbytes
1217	lappend info "dataset_tag" $tag
1218	SendCmd "clientinfo [list $info]"
1219	}
1220	set extents [$dataobj extents $comp]
1221	# I have a field. Is a vector field or a volume field?
1222	if { $extents == 1 } {
1223	set cmd "volume data follows $nbytes $tag\n"
1224	} else {
1225	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1226	if { $cmd == "" } {
1227	puts stderr "no command"
1228	continue
1229	}
1230	}
1231	append _outbuf $cmd
1232	append _outbuf $data
1233	NameTransferFunc $dataobj $comp
1234	set _recvObjs($tag) 1
1235	}
1236	}
1237
1238	set _first [lindex [get] 0]
1239
1240	# Reset the camera and other view parameters
1241	InitSettings light2side light transp isosurface grid axes volume outline
1242
1243	# nothing to send -- activate the proper volume
1244	if {"" != $_first} {
1245	AdjustSetting light
1246	AdjustSetting transp
1247	set axis [$_first hints updir]
1248	if {"" != $axis} {
1249	SendCmd "up $axis"
1250	}
1251	set location [$_first hints camera]
1252	if { $location != "" } {
1253	array set _view $location
1254	}
1255
1256	}
1257	set _settings($this-qw) $_view(qw)
1258	set _settings($this-qx) $_view(qx)
1259	set _settings($this-qy) $_view(qy)
1260	set _settings($this-qz) $_view(qz)
1261	set _settings($this-xpan) $_view(xpan)
1262	set _settings($this-ypan) $_view(ypan)
1263	set _settings($this-zoom) $_view(zoom)
1264
1265	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1266	$_arcball quaternion $q
1267	SendCmd "camera orient $q"
1268	SendCmd "camera reset"
1269	PanCamera
1270	SendCmd "camera zoom $_view(zoom)"
1271
1272	foreach dataobj [get] {
1273	foreach comp [$dataobj components] {
1274	NameTransferFunc $dataobj $comp
1275	}
1276	}
1277
1278	# nothing to send -- activate the proper ivol
1279	set _first [lindex [get] 0]
1280	if {"" != $_first} {
1281	set axis [$_first hints updir]
1282	if {"" != $axis} {
1283	SendCmd "up $axis"
1284	}
1285	set location [$_first hints camera]
1286	if { $location != "" } {
1287	array set _view $location
1288	}
1289	set comp [lindex [$_first components] 0]
1290	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1291	}
1292
1293
1294	# sync the state of slicers
1295	set vols [CurrentVolumeIds -cutplanes]
1296	foreach axis {x y z} {
1297	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1298	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1299	SendCmd "cutplane position $pos $axis $vols"
1300	}
1301	SendCmd "volume data state $_settings($this-volume)"
1302	EventuallyResizeLegend
1303
1304	# Actually write the commands to the server socket. If it fails, we don't
1305	# care. We're finished here.
1306	blt::busy hold $itk_component(hull)
1307	StopBufferingCommands
1308	blt::busy release $itk_component(hull)
1309	set _reset 0
1310	}
1311
1312	# ----------------------------------------------------------------------
1313	# USAGE: CurrentVolumeIds ?-cutplanes?
1314	#
1315	# Returns a list of volume server IDs for the current volume being
1316	# displayed. This is normally a single ID, but it might be a list
1317	# of IDs if the current data object has multiple components.
1318	# ----------------------------------------------------------------------
1319	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1320	return ""
1321	if { $_first == "" } {
1322	return
1323	}
1324	foreach key [array names _serverObjs -] {
1325	if {[string match $_first-* $key]} {
1326	array set style {
1327	-cutplanes 1
1328	}
1329	foreach {dataobj comp} [split $key -] break
1330	array set style [lindex [$dataobj components -style $comp] 0]
1331	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1332	lappend rlist $_serverObjs($key)
1333	}
1334	}
1335	}
1336	return $rlist
1337	}
1338
1339	# ----------------------------------------------------------------------
1340	# USAGE: Zoom in
1341	# USAGE: Zoom out
1342	# USAGE: Zoom reset
1343	#
1344	# Called automatically when the user clicks on one of the zoom
1345	# controls for this widget. Changes the zoom for the current view.
1346	# ----------------------------------------------------------------------
1347	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1348	switch -- $option {
1349	"in" {
1350	set _view(zoom) [expr {$_view(zoom)*1.25}]
1351	set _settings($this-zoom) $_view(zoom)
1352	SendCmd "camera zoom $_view(zoom)"
1353	}
1354	"out" {
1355	set _view(zoom) [expr {$_view(zoom)*0.8}]
1356	set _settings($this-zoom) $_view(zoom)
1357	SendCmd "camera zoom $_view(zoom)"
1358	}
1359	"reset" {
1360	array set _view {
1361	qw 0.853553
1362	qx -0.353553
1363	qy 0.353553
1364	qz 0.146447
1365	zoom 1.0
1366	xpan 0
1367	ypan 0
1368	}
1369	if { $_first != "" } {
1370	set location [$_first hints camera]
1371	if { $location != "" } {
1372	array set _view $location
1373	}
1374	}
1375	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1376	$_arcball quaternion $q
1377	SendCmd "camera orient $q"
1378	SendCmd "camera reset"
1379	set _settings($this-qw) $_view(qw)
1380	set _settings($this-qx) $_view(qx)
1381	set _settings($this-qy) $_view(qy)
1382	set _settings($this-qz) $_view(qz)
1383	set _settings($this-xpan) $_view(xpan)
1384	set _settings($this-ypan) $_view(ypan)
1385	set _settings($this-zoom) $_view(zoom)
1386	}
1387	}
1388	}
1389
1390	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1391	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1392	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1393	set x $_view(xpan)
1394	set y $_view(ypan)
1395	SendCmd "camera pan $x $y"
1396	}
1397
1398	# ----------------------------------------------------------------------
1399	# USAGE: Rotate click <x> <y>
1400	# USAGE: Rotate drag <x> <y>
1401	# USAGE: Rotate release <x> <y>
1402	#
1403	# Called automatically when the user clicks/drags/releases in the
1404	# plot area. Moves the plot according to the user's actions.
1405	# ----------------------------------------------------------------------
1406	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1407	switch -- $option {
1408	click {
1409	$itk_component(3dview) configure -cursor fleur
1410	set _click(x) $x
1411	set _click(y) $y
1412	}
1413	drag {
1414	if {[array size _click] == 0} {
1415	Rotate click $x $y
1416	} else {
1417	set w [winfo width $itk_component(3dview)]
1418	set h [winfo height $itk_component(3dview)]
1419	if {$w <= 0 \|\| $h <= 0} {
1420	return
1421	}
1422
1423	if {[catch {
1424	# this fails sometimes for no apparent reason
1425	set dx [expr {double($x-$_click(x))/$w}]
1426	set dy [expr {double($y-$_click(y))/$h}]
1427	}]} {
1428	return
1429	}
1430
1431	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1432	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1433	set _settings($this-qw) $_view(qw)
1434	set _settings($this-qx) $_view(qx)
1435	set _settings($this-qy) $_view(qy)
1436	set _settings($this-qz) $_view(qz)
1437	SendCmd "camera orient $q"
1438
1439	set _click(x) $x
1440	set _click(y) $y
1441	}
1442	}
1443	release {
1444	Rotate drag $x $y
1445	$itk_component(3dview) configure -cursor ""
1446	catch {unset _click}
1447	}
1448	default {
1449	error "bad option \"$option\": should be click, drag, release"
1450	}
1451	}
1452	}
1453
1454	# ----------------------------------------------------------------------
1455	# USAGE: $this Pan click x y
1456	# $this Pan drag x y
1457	# $this Pan release x y
1458	#
1459	# Called automatically when the user clicks on one of the zoom
1460	# controls for this widget. Changes the zoom for the current view.
1461	# ----------------------------------------------------------------------
1462	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1463	# Experimental stuff
1464	set w [winfo width $itk_component(3dview)]
1465	set h [winfo height $itk_component(3dview)]
1466	if { $option == "set" } {
1467	set x [expr $x / double($w)]
1468	set y [expr $y / double($h)]
1469	set _view(xpan) [expr $_view(xpan) + $x]
1470	set _view(ypan) [expr $_view(ypan) + $y]
1471	PanCamera
1472	set _settings($this-xpan) $_view(xpan)
1473	set _settings($this-ypan) $_view(ypan)
1474	return
1475	}
1476	if { $option == "click" } {
1477	set _click(x) $x
1478	set _click(y) $y
1479	$itk_component(3dview) configure -cursor hand1
1480	}
1481	if { $option == "drag" \|\| $option == "release" } {
1482	set dx [expr ($_click(x) - $x)/double($w)]
1483	set dy [expr ($_click(y) - $y)/double($h)]
1484	set _click(x) $x
1485	set _click(y) $y
1486	set _view(xpan) [expr $_view(xpan) - $dx]
1487	set _view(ypan) [expr $_view(ypan) - $dy]
1488	PanCamera
1489	set _settings($this-xpan) $_view(xpan)
1490	set _settings($this-ypan) $_view(ypan)
1491	}
1492	if { $option == "release" } {
1493	$itk_component(3dview) configure -cursor ""
1494	}
1495	}
1496
1497
1498	# ----------------------------------------------------------------------
1499	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1500	#
1501	# Called when the user clicks on the record, stop or play buttons
1502	# for flow visualization.
1503	# ----------------------------------------------------------------------
1504	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1505	switch -- $option {
1506	movie {
1507	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1508	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1509	}
1510	set action [lindex $args 0]
1511	set op [lindex $args 1]
1512	if {$op == ""} { set op "on" }
1513
1514	set current [State $action]
1515	if {$op == "toggle"} {
1516	if {$current == "on"} {
1517	set op "off"
1518	} else {
1519	set op "on"
1520	}
1521	}
1522	set cmds ""
1523	switch -- $action {
1524	record {
1525	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1526	$itk_component(rewind) configure -relief sunken
1527	$itk_component(stop) configure -relief raised
1528	$itk_component(play) configure -relief raised
1529	set inner $itk_component(settingsFrame)
1530	set frames [$inner.framecnt value]
1531	set _settings(nsteps) $frames
1532	set cmds "flow capture $frames"
1533	SendCmd $cmds
1534	}
1535	}
1536	stop {
1537	if { [$itk_component(stop) cget -relief] != "sunken" } {
1538	$itk_component(rewind) configure -relief raised
1539	$itk_component(stop) configure -relief sunken
1540	$itk_component(play) configure -relief raised
1541	_pause
1542	set cmds "flow reset"
1543	SendCmd $cmds
1544	}
1545	}
1546	play {
1547	if { [$itk_component(play) cget -relief] != "sunken" } {
1548	$itk_component(rewind) configure -relief raised
1549	$itk_component(stop) configure -relief raised
1550	$itk_component(play) configure \
1551	-image [Rappture::icon flow-pause] \
1552	-relief sunken
1553	bind $itk_component(play) <ButtonPress> \
1554	[itcl::code $this _pause]
1555	flow next
1556	}
1557	}
1558	default {
1559	error "bad option \"$option\": should be one of record\|stop\|play"
1560	}
1561
1562	}
1563	}
1564	default {
1565	error "bad option \"$option\": should be movie"
1566	}
1567	}
1568	}
1569
1570	# ----------------------------------------------------------------------
1571	# USAGE: Play
1572	#
1573	# ----------------------------------------------------------------------
1574	itcl::body Rappture::FlowvisViewer::Play {} {
1575	SendCmd "flow next"
1576	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1577	$_dispatcher event -after $delay !play
1578	}
1579
1580	# ----------------------------------------------------------------------
1581	# USAGE: Pause
1582	#
1583	# Invoked when the user hits the "pause" button to stop playing the
1584	# current sequence of frames as a movie.
1585	# ----------------------------------------------------------------------
1586	itcl::body Rappture::FlowvisViewer::Pause {} {
1587	$_dispatcher cancel !play
1588
1589	# Toggle the button to "play" mode
1590	$itk_component(play) configure \
1591	-image [Rappture::icon flow-start] \
1592	-relief raised
1593	bind $itk_component(play) <ButtonPress> \
1594	[itcl::code $this Flow movie play toggle]
1595	}
1596
1597	# ----------------------------------------------------------------------
1598	# USAGE: InitSettings <what> ?<value>?
1599	#
1600	# Used internally to update rendering settings whenever parameters
1601	# change in the popup settings panel. Sends the new settings off
1602	# to the back end.
1603	# ----------------------------------------------------------------------
1604	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1605	foreach arg $args {
1606	AdjustSetting $arg
1607	}
1608	}
1609
1610	# ----------------------------------------------------------------------
1611	# USAGE: AdjustSetting <what> ?<value>?
1612	#
1613	# Used internally to update rendering settings whenever parameters
1614	# change in the popup settings panel. Sends the new settings off
1615	# to the back end.
1616	# ----------------------------------------------------------------------
1617	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1618	switch -- $what {
1619	colormap {
1620	set color [$itk_component(colormap) value]
1621	set _settings(colormap) $color
1622	#ResetColormap $color
1623	}
1624	light {
1625	if { $_first != "" } {
1626	set comp [lindex [$_first components] 0]
1627	set tag $_first-$comp
1628	set diffuse [expr {0.01*$_settings($this-light)}]
1629	set ambient [expr {1.0 - $diffuse}]
1630	set specularLevel 0.3
1631	set specularExp 90.0
1632	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1633	}
1634	}
1635	light2side {
1636	if { $_first != "" } {
1637	set comp [lindex [$_first components] 0]
1638	set tag $_first-$comp
1639	set val $_settings($this-light2side)
1640	SendCmd "$tag configure -light2side $val"
1641	}
1642	}
1643	transp {
1644	if { $_first != "" } {
1645	set comp [lindex [$_first components] 0]
1646	set tag $_first-$comp
1647	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1648	SendCmd "$tag configure -opacity $opacity"
1649	}
1650	}
1651	opacity {
1652	if { $_first != "" && $_activeTf != "" } {
1653	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1654	set tf $_activeTf
1655	set _settings($this-$tf-opacity) $opacity
1656	updatetransferfuncs
1657	}
1658	}
1659
1660	thickness {
1661	if { $_first != "" && $_activeTf != "" } {
1662	set val $_settings($this-thickness)
1663	# Scale values between 0.00001 and 0.01000
1664	set sval [expr {0.0001*double($val)}]
1665	set tf $_activeTf
1666	set _settings($this-$tf-thickness) $sval
1667	updatetransferfuncs
1668	}
1669	}
1670	"outline" {
1671	if { $_first != "" } {
1672	set comp [lindex [$_first components] 0]
1673	set tag $_first-$comp
1674	SendCmd "$tag configure -outline $_settings($this-outline)"
1675	}
1676	}
1677	"isosurface" {
1678	if { [isconnected] } {
1679	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1680	}
1681	}
1682	"grid" {
1683	if { [isconnected] } {
1684	SendCmd "grid visible $_settings($this-grid)"
1685	}
1686	}
1687	"axes" {
1688	if { [isconnected] } {
1689	SendCmd "axis visible $_settings($this-axes)"
1690	}
1691	}
1692	"legend" {
1693	if { $_settings($this-legend) } {
1694	blt::table $itk_component(plotarea) \
1695	0,0 $itk_component(3dview) -fill both \
1696	1,0 $itk_component(legend) -fill x
1697	blt::table configure $itk_component(plotarea) r1 -resize none
1698	} else {
1699	blt::table forget $itk_component(legend)
1700	}
1701	}
1702	"volume" {
1703	if { $_first != "" } {
1704	set comp [lindex [$_first components] 0]
1705	set tag $_first-$comp
1706	SendCmd "$tag configure -volume $_settings($this-volume)"
1707	}
1708	}
1709	"xcutplane" - "ycutplane" - "zcutplane" {
1710	set axis [string range $what 0 0]
1711	set bool $_settings($this-$what)
1712	if { [isconnected] } {
1713	set vols [CurrentVolumeIds -cutplanes]
1714	SendCmd "cutplane state $bool $axis $vols"
1715	}
1716	if { $bool } {
1717	$itk_component(${axis}CutScale) configure -state normal \
1718	-troughcolor white
1719	} else {
1720	$itk_component(${axis}CutScale) configure -state disabled \
1721	-troughcolor grey82
1722	}
1723	}
1724	default {
1725	error "don't know how to fix $what"
1726	}
1727	}
1728	}
1729
1730	# ----------------------------------------------------------------------
1731	# USAGE: ResizeLegend
1732	#
1733	# Used internally to update the legend area whenever it changes size
1734	# or when the field changes. Asks the server to send a new legend
1735	# for the current field.
1736	# ----------------------------------------------------------------------
1737	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1738	set _resizeLegendPending 0
1739	set lineht [font metrics $itk_option(-font) -linespace]
1740	set w [expr {$_width-20}]
1741	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1742
1743	if { $_first == "" } {
1744	return
1745	}
1746	set comp [lindex [$_first components] 0]
1747	set tag $_first-$comp
1748	#set _activeTf [lindex $_obj2style($tag) 0]
1749	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1750	#SendCmd "legend $_activeTf $w $h"
1751	SendCmd "$tag legend $w $h"
1752	} else {
1753	# Can't do this as this will remove the items associated with the
1754	# isomarkers.
1755
1756	#$itk_component(legend) delete all
1757	}
1758	}
1759
1760	#
1761	# NameTransferFunc --
1762	#
1763	# Creates a transfer function name based on the <style> settings in the
1764	# library run.xml file. This placeholder will be used later to create
1765	# and send the actual transfer function once the data info has been sent
1766	# to us by the render server. [We won't know the volume limits until the
1767	# server parses the 3D data and sends back the limits via ReceiveData.]
1768	#
1769	# FIXME: The current way we generate transfer-function names completely
1770	# ignores the -markers option. The problem is that we are forced
1771	# to compute the name from an increasing complex set of values:
1772	# color, levels, marker, opacity. I think we're stuck doing it
1773	# now.
1774	#
1775	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1776	array set style {
1777	-color BCGYR
1778	-levels 6
1779	-opacity 1.0
1780	-light 40
1781	-transp 50
1782	}
1783	array set style [lindex [$dataobj components -style $comp] 0]
1784	set _settings($this-light) $style(-light)
1785	set _settings($this-transp) $style(-transp)
1786	set _settings($this-opacity) [expr $style(-opacity) * 100]
1787	set tf "$style(-color):$style(-levels):$style(-opacity)"
1788	set _obj2style($dataobj-$comp) $tf
1789	lappend _style2objs($tf) $dataobj $comp
1790	return $tf
1791	}
1792
1793	#
1794	# ComputeTransferFunc --
1795	#
1796	# Computes and sends the transfer function to the render server. It's
1797	# assumed that the volume data limits are known and that the global
1798	# transfer-functions slider values have be setup. Both parts are
1799	# needed to compute the relative value (location) of the marker, and
1800	# the alpha map of the transfer function.
1801	#
1802	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1803	array set style {
1804	-color BCGYR
1805	-levels 6
1806	-opacity 1.0
1807	-light 40
1808	-transp 50
1809	}
1810	set dataobj ""; set comp ""
1811	foreach {dataobj comp} $_style2objs($tf) break
1812	if { $dataobj == "" } {
1813	return 0
1814	}
1815	array set style [lindex [$dataobj components -style $comp] 0]
1816
1817
1818	# We have to parse the style attributes for a volume using this
1819	# transfer-function once. This sets up the initial isomarkers for the
1820	# transfer function. The user may add/delete markers, so we have to
1821	# maintain a list of markers for each transfer-function. We use the one
1822	# of the volumes (the first in the list) using the transfer-function as a
1823	# reference.
1824	#
1825	# FIXME: The current way we generate transfer-function names completely
1826	# ignores the -markers option. The problem is that we are forced
1827	# to compute the name from an increasing complex set of values:
1828	# color, levels, marker, opacity. I think the cow's out of the
1829	# barn on this one.
1830
1831	if { ![info exists _isomarkers($tf)] } {
1832	# Have to defer creation of isomarkers until we have data limits
1833	if { [info exists style(-markers)] &&
1834	[llength $style(-markers)] > 0 } {
1835	ParseMarkersOption $tf $style(-markers)
1836	} else {
1837	ParseLevelsOption $tf $style(-levels)
1838	}
1839	}
1840	if { [info exists style(-nonuniformcolors)] } {
1841	foreach { value color } $style(-nonuniformcolors) {
1842	append cmap "$value [Color2RGB $color] "
1843	}
1844	} else {
1845	set cmap [ColorsToColormap $style(-color)]
1846	}
1847	set tag $this-$tf
1848	if { ![info exists _settings($tag-opacity)] } {
1849	set _settings($tag-opacity) $style(-opacity)
1850	}
1851	set max 1.0 ;#$_settings($tag-opacity)
1852
1853	set isovalues {}
1854	foreach m $_isomarkers($tf) {
1855	lappend isovalues [$m relval]
1856	}
1857	# Sort the isovalues
1858	set isovalues [lsort -real $isovalues]
1859
1860	if { ![info exists _settings($tag-thickness)]} {
1861	set _settings($tag-thickness) 0.005
1862	}
1863	set delta $_settings($tag-thickness)
1864
1865	set first [lindex $isovalues 0]
1866	set last [lindex $isovalues end]
1867	set wmap ""
1868	if { $first == "" \|\| $first != 0.0 } {
1869	lappend wmap 0.0 0.0
1870	}
1871	foreach x $isovalues {
1872	set x1 [expr {$x-$delta-0.00001}]
1873	set x2 [expr {$x-$delta}]
1874	set x3 [expr {$x+$delta}]
1875	set x4 [expr {$x+$delta+0.00001}]
1876	if { $x1 < 0.0 } {
1877	set x1 0.0
1878	} elseif { $x1 > 1.0 } {
1879	set x1 1.0
1880	}
1881	if { $x2 < 0.0 } {
1882	set x2 0.0
1883	} elseif { $x2 > 1.0 } {
1884	set x2 1.0
1885	}
1886	if { $x3 < 0.0 } {
1887	set x3 0.0
1888	} elseif { $x3 > 1.0 } {
1889	set x3 1.0
1890	}
1891	if { $x4 < 0.0 } {
1892	set x4 0.0
1893	} elseif { $x4 > 1.0 } {
1894	set x4 1.0
1895	}
1896	# add spikes in the middle
1897	lappend wmap $x1 0.0
1898	lappend wmap $x2 $max
1899	lappend wmap $x3 $max
1900	lappend wmap $x4 0.0
1901	}
1902	if { $last == "" \|\| $last != 1.0 } {
1903	lappend wmap 1.0 0.0
1904	}
1905	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1906	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1907	}
1908
1909	# ----------------------------------------------------------------------
1910	# CONFIGURATION OPTION: -plotbackground
1911	# ----------------------------------------------------------------------
1912	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1913	if { [isconnected] } {
1914	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1915	#fix this!
1916	#SendCmd "color background $r $g $b"
1917	}
1918	}
1919
1920	# ----------------------------------------------------------------------
1921	# CONFIGURATION OPTION: -plotforeground
1922	# ----------------------------------------------------------------------
1923	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1924	if { [isconnected] } {
1925	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1926	#fix this!
1927	#SendCmd "color background $r $g $b"
1928	}
1929	}
1930
1931	# ----------------------------------------------------------------------
1932	# CONFIGURATION OPTION: -plotoutline
1933	# ----------------------------------------------------------------------
1934	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1935	# Must check if we are connected because this routine is called from the
1936	# class body when the -plotoutline itk_option is defined. At that point
1937	# the FlowvisViewer class constructor hasn't been called, so we can't
1938	# start sending commands to visualization server.
1939	if { [isconnected] } {
1940	if {"" == $itk_option(-plotoutline)} {
1941	SendCmd "volume outline state off"
1942	} else {
1943	SendCmd "volume outline state on"
1944	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1945	}
1946	}
1947	}
1948
1949	#
1950	# The -levels option takes a single value that represents the number
1951	# of evenly distributed markers based on the current data range. Each
1952	# marker is a relative value from 0.0 to 1.0.
1953	#
1954	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1955	set c $itk_component(legend)
1956	regsub -all "," $levels " " levels
1957	if {[string is int $levels]} {
1958	for {set i 1} { $i <= $levels } {incr i} {
1959	set x [expr {double($i)/($levels+1)}]
1960	set m [Rappture::IsoMarker \#auto $c $this $tf]
1961	$m relval $x
1962	lappend _isomarkers($tf) $m
1963	}
1964	} else {
1965	foreach x $levels {
1966	set m [Rappture::IsoMarker \#auto $c $this $tf]
1967	$m relval $x
1968	lappend _isomarkers($tf) $m
1969	}
1970	}
1971	}
1972
1973	#
1974	# The -markers option takes a list of zero or more values (the values
1975	# may be separated either by spaces or commas) that have the following
1976	# format:
1977	#
1978	# N% Percent of current total data range. Converted to
1979	# to a relative value between 0.0 and 1.0.
1980	# N Absolute value of marker. If the marker is outside of
1981	# the current range, it will be displayed on the outer
1982	# edge of the legends, but it range it represents will
1983	# not be seen.
1984	#
1985	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1986	set c $itk_component(legend)
1987	regsub -all "," $markers " " markers
1988	foreach marker $markers {
1989	set n [scan $marker "%g%s" value suffix]
1990	if { $n == 2 && $suffix == "%" } {
1991	# ${n}% : Set relative value.
1992	set value [expr {$value * 0.01}]
1993	set m [Rappture::IsoMarker \#auto $c $this $tf]
1994	$m relval $value
1995	lappend _isomarkers($tf) $m
1996	} else {
1997	# ${n} : Set absolute value.
1998	set m [Rappture::IsoMarker \#auto $c $this $tf]
1999	$m absval $value
2000	lappend _isomarkers($tf) $m
2001	}
2002	}
2003	}
2004
2005	# ----------------------------------------------------------------------
2006	# USAGE: UndateTransferFuncs
2007	# ----------------------------------------------------------------------
2008	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
2009	$_dispatcher event -after 100 !send_transfunc
2010	}
2011
2012	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2013	if { $_activeTf == "" } {
2014	error "active transfer function isn't set"
2015	}
2016	set tf $_activeTf
2017	set c $itk_component(legend)
2018	set m [Rappture::IsoMarker \#auto $c $this $tf]
2019	set w [winfo width $c]
2020	$m relval [expr {double($x-10)/($w-20)}]
2021	lappend _isomarkers($tf) $m
2022	updatetransferfuncs
2023	return 1
2024	}
2025
2026	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2027	set tf [$marker transferfunc]
2028	set bool 0
2029	if { [info exists _isomarkers($tf)] } {
2030	set list {}
2031	set marker [namespace tail $marker]
2032	foreach m $_isomarkers($tf) {
2033	set sx [$m screenpos]
2034	if { $m != $marker } {
2035	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2036	$marker relval [$m relval]
2037	itcl::delete object $m
2038	bell
2039	set bool 1
2040	continue
2041	}
2042	}
2043	lappend list $m
2044	}
2045	set _isomarkers($tf) $list
2046	updatetransferfuncs
2047	}
2048	return $bool
2049	}
2050
2051	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2052	set tf [$marker transferfunc]
2053	if { [info exists _isomarkers($tf)] } {
2054	set marker [namespace tail $marker]
2055	foreach m $_isomarkers($tf) {
2056	set sx [$m screenpos]
2057	if { $m != $marker } {
2058	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2059	$m activate $bool
2060	}
2061	}
2062	}
2063	return ""
2064	}
2065
2066	itcl::body Rappture::FlowvisViewer::limits { tf } {
2067	set _limits(vmin) 0.0
2068	set _limits(vmax) 1.0
2069	if { ![info exists _style2objs($tf)] } {
2070	puts stderr "no style2objs for $tf tf=($tf)"
2071	return [array get _limits]
2072	}
2073	set min ""; set max ""
2074	foreach {dataobj comp} $_style2objs($tf) {
2075	set tag $dataobj-$comp
2076	if { ![info exists _serverObjs($tag)] } {
2077	puts stderr "$tag not in serverObjs?"
2078	continue
2079	}
2080	if { ![info exists _limits($tag-min)] } {
2081	puts stderr "$tag no min?"
2082	continue
2083	}
2084	if { $min == "" \|\| $min > $_limits($tag-min) } {
2085	set min $_limits($tag-min)
2086	}
2087	if { $max == "" \|\| $max < $_limits($tag-max) } {
2088	set max $_limits($tag-max)
2089	}
2090	}
2091	if { $min != "" } {
2092	set _limits(vmin) $min
2093	}
2094	if { $max != "" } {
2095	set _limits(vmax) $max
2096	}
2097	return [array get _limits]
2098	}
2099
2100	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2101	foreach { key value } {
2102	grid 0
2103	axes 0
2104	outline 1
2105	volume 1
2106	legend 1
2107	particles 1
2108	lic 1
2109	} {
2110	set _settings($this-$key) $value
2111	}
2112
2113	set fg [option get $itk_component(hull) font Font]
2114	#set bfg [option get $itk_component(hull) boldFont Font]
2115
2116	set inner [$itk_component(main) insert end \
2117	-title "View Settings" \
2118	-icon [Rappture::icon wrench]]
2119	$inner configure -borderwidth 4
2120
2121	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2122	checkbutton $inner.isosurface \
2123	-text "Isosurface shading" \
2124	-variable [itcl::scope _settings($this-isosurface)] \
2125	-command [itcl::code $this AdjustSetting isosurface] \
2126	-font "Arial 9"
2127
2128	checkbutton $inner.axes \
2129	-text "Axes" \
2130	-variable [itcl::scope _settings($this-axes)] \
2131	-command [itcl::code $this AdjustSetting axes] \
2132	-font "Arial 9"
2133
2134	checkbutton $inner.grid \
2135	-text "Grid" \
2136	-variable [itcl::scope _settings($this-grid)] \
2137	-command [itcl::code $this AdjustSetting grid] \
2138	-font "Arial 9"
2139
2140	checkbutton $inner.outline \
2141	-text "Outline" \
2142	-variable [itcl::scope _settings($this-outline)] \
2143	-command [itcl::code $this AdjustSetting outline] \
2144	-font "Arial 9"
2145
2146	checkbutton $inner.legend \
2147	-text "Legend" \
2148	-variable [itcl::scope _settings($this-legend)] \
2149	-command [itcl::code $this AdjustSetting legend] \
2150	-font "Arial 9"
2151
2152	checkbutton $inner.volume \
2153	-text "Volume" \
2154	-variable [itcl::scope _settings($this-volume)] \
2155	-command [itcl::code $this AdjustSetting volume] \
2156	-font "Arial 9"
2157
2158	checkbutton $inner.particles \
2159	-text "Particles" \
2160	-variable [itcl::scope _settings($this-particles)] \
2161	-command [itcl::code $this AdjustSetting particles] \
2162	-font "Arial 9"
2163
2164	checkbutton $inner.lic \
2165	-text "Lic" \
2166	-variable [itcl::scope _settings($this-lic)] \
2167	-command [itcl::code $this AdjustSetting lic] \
2168	-font "Arial 9"
2169
2170	frame $inner.frame
2171
2172	blt::table $inner \
2173	0,0 $inner.axes -cspan 2 -anchor w \
2174	1,0 $inner.grid -cspan 2 -anchor w \
2175	2,0 $inner.outline -cspan 2 -anchor w \
2176	3,0 $inner.volume -cspan 2 -anchor w \
2177	4,0 $inner.legend -cspan 2 -anchor w
2178
2179	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2180
2181	blt::table configure $inner r* -resize none
2182	blt::table configure $inner r5 -resize expand
2183	}
2184
2185	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2186	foreach { key value } {
2187	light2side 1
2188	light 40
2189	transp 50
2190	opacity 100
2191	thickness 350
2192	} {
2193	set _settings($this-$key) $value
2194	}
2195
2196	set inner [$itk_component(main) insert end \
2197	-title "Volume Settings" \
2198	-icon [Rappture::icon volume-on]]
2199	$inner configure -borderwidth 4
2200
2201	set fg [option get $itk_component(hull) font Font]
2202	#set bfg [option get $itk_component(hull) boldFont Font]
2203
2204	checkbutton $inner.vol -text "Show volume" -font $fg \
2205	-text "Volume" \
2206	-variable [itcl::scope _settings($this-volume)] \
2207	-command [itcl::code $this AdjustSetting volume] \
2208	-font "Arial 9"
2209
2210	label $inner.shading -text "Shading:" -font $fg
2211
2212	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2213	-variable [itcl::scope _settings($this-light2side)] \
2214	-command [itcl::code $this AdjustSetting light2side]
2215
2216	label $inner.dim -text "Glow" -font $fg
2217	::scale $inner.light -from 0 -to 100 -orient horizontal \
2218	-variable [itcl::scope _settings($this-light)] \
2219	-width 10 \
2220	-showvalue off -command [itcl::code $this AdjustSetting light]
2221	label $inner.bright -text "Surface" -font $fg
2222
2223	label $inner.fog -text "Clear" -font $fg
2224	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2225	-variable [itcl::scope _settings($this-transp)] \
2226	-width 10 \
2227	-showvalue off -command [itcl::code $this AdjustSetting transp]
2228	label $inner.plastic -text "Opaque" -font $fg
2229
2230	label $inner.clear -text "Clear" -font $fg
2231	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2232	-variable [itcl::scope _settings($this-opacity)] \
2233	-width 10 \
2234	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2235	label $inner.opaque -text "Opaque" -font $fg
2236
2237	label $inner.thin -text "Thin" -font $fg
2238	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2239	-variable [itcl::scope _settings($this-thickness)] \
2240	-width 10 \
2241	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2242	label $inner.thick -text "Thick" -font $fg
2243
2244	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2245	itk_component add colormap {
2246	Rappture::Combobox $inner.colormap -width 10 -editable no
2247	}
2248
2249	$inner.colormap choices insert end [GetColormapList -includeNone]
2250	$itk_component(colormap) value "BCGYR"
2251	bind $inner.colormap <<Value>> \
2252	[itcl::code $this AdjustSetting colormap]
2253
2254	blt::table $inner \
2255	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2256	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2257	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2258	3,0 $inner.dim -anchor e -pady 2 \
2259	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2260	3,3 $inner.bright -anchor w -pady 2 \
2261	4,0 $inner.fog -anchor e -pady 2 \
2262	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2263	4,3 $inner.plastic -anchor w -pady 2 \
2264	5,0 $inner.thin -anchor e -pady 2 \
2265	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2266	5,3 $inner.thick -anchor w -pady 2
2267
2268	blt::table configure $inner c0 c1 c3 r* -resize none
2269	blt::table configure $inner r6 -resize expand
2270	}
2271
2272	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2273	set inner [$itk_component(main) insert end \
2274	-title "Cutplane Settings" \
2275	-icon [Rappture::icon cutbutton]]
2276	$inner configure -borderwidth 4
2277
2278	# X-value slicer...
2279	itk_component add xCutButton {
2280	Rappture::PushButton $inner.xbutton \
2281	-onimage [Rappture::icon x-cutplane] \
2282	-offimage [Rappture::icon x-cutplane] \
2283	-command [itcl::code $this AdjustSetting xcutplane] \
2284	-variable [itcl::scope _settings($this-xcutplane)]
2285	}
2286	Rappture::Tooltip::for $itk_component(xCutButton) \
2287	"Toggle the X cut plane on/off"
2288
2289	itk_component add xCutScale {
2290	::scale $inner.xval -from 100 -to 0 \
2291	-width 10 -orient vertical -showvalue off \
2292	-borderwidth 1 -highlightthickness 0 \
2293	-command [itcl::code $this Slice move x] \
2294	-variable [itcl::scope _settings($this-xcutposition)]
2295	} {
2296	usual
2297	ignore -borderwidth -highlightthickness
2298	}
2299	# Set the default cutplane value before disabling the scale.
2300	$itk_component(xCutScale) set 50
2301	$itk_component(xCutScale) configure -state disabled
2302	Rappture::Tooltip::for $itk_component(xCutScale) \
2303	"@[itcl::code $this SlicerTip x]"
2304
2305	# Y-value slicer...
2306	itk_component add yCutButton {
2307	Rappture::PushButton $inner.ybutton \
2308	-onimage [Rappture::icon y-cutplane] \
2309	-offimage [Rappture::icon y-cutplane] \
2310	-command [itcl::code $this AdjustSetting ycutplane] \
2311	-variable [itcl::scope _settings($this-ycutplane)]
2312	}
2313	Rappture::Tooltip::for $itk_component(yCutButton) \
2314	"Toggle the Y cut plane on/off"
2315
2316	itk_component add yCutScale {
2317	::scale $inner.yval -from 100 -to 0 \
2318	-width 10 -orient vertical -showvalue off \
2319	-borderwidth 1 -highlightthickness 0 \
2320	-command [itcl::code $this Slice move y] \
2321	-variable [itcl::scope _settings($this-ycutposition)]
2322	} {
2323	usual
2324	ignore -borderwidth -highlightthickness
2325	}
2326	Rappture::Tooltip::for $itk_component(yCutScale) \
2327	"@[itcl::code $this SlicerTip y]"
2328	# Set the default cutplane value before disabling the scale.
2329	$itk_component(yCutScale) set 50
2330	$itk_component(yCutScale) configure -state disabled
2331
2332	# Z-value slicer...
2333	itk_component add zCutButton {
2334	Rappture::PushButton $inner.zbutton \
2335	-onimage [Rappture::icon z-cutplane] \
2336	-offimage [Rappture::icon z-cutplane] \
2337	-command [itcl::code $this AdjustSetting zcutplane] \
2338	-variable [itcl::scope _settings($this-zcutplane)]
2339	}
2340	Rappture::Tooltip::for $itk_component(zCutButton) \
2341	"Toggle the Z cut plane on/off"
2342
2343	itk_component add zCutScale {
2344	::scale $inner.zval -from 100 -to 0 \
2345	-width 10 -orient vertical -showvalue off \
2346	-borderwidth 1 -highlightthickness 0 \
2347	-command [itcl::code $this Slice move z] \
2348	-variable [itcl::scope _settings($this-zcutposition)]
2349	} {
2350	usual
2351	ignore -borderwidth -highlightthickness
2352	}
2353	$itk_component(zCutScale) set 50
2354	$itk_component(zCutScale) configure -state disabled
2355	#$itk_component(zCutScale) configure -state disabled
2356	Rappture::Tooltip::for $itk_component(zCutScale) \
2357	"@[itcl::code $this SlicerTip z]"
2358
2359	blt::table $inner \
2360	1,1 $itk_component(xCutButton) \
2361	1,2 $itk_component(yCutButton) \
2362	1,3 $itk_component(zCutButton) \
2363	0,1 $itk_component(xCutScale) \
2364	0,2 $itk_component(yCutScale) \
2365	0,3 $itk_component(zCutScale) \
2366
2367	blt::table configure $inner r0 r1 c* -resize none
2368	blt::table configure $inner r2 c4 -resize expand
2369	blt::table configure $inner c0 -width 2
2370	blt::table configure $inner c1 c2 c3 -padx 2
2371	}
2372
2373	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2374	set inner [$itk_component(main) insert end \
2375	-title "Camera Settings" \
2376	-icon [Rappture::icon camera]]
2377	$inner configure -borderwidth 4
2378
2379	label $inner.view_l -text "view" -font "Arial 9"
2380	set f [frame $inner.view]
2381	foreach side { front back left right top bottom } {
2382	button $f.$side -image [Rappture::icon view$side] \
2383	-command [itcl::code $this SetOrientation $side]
2384	Rappture::Tooltip::for $f.$side "Change the view to $side"
2385	pack $f.$side -side left
2386	}
2387
2388	blt::table $inner \
2389	0,0 $inner.view_l -anchor e -pady 2 \
2390	0,1 $inner.view -anchor w -pady 2
2391
2392	set row 1
2393	set labels { qw qx qy qz xpan ypan zoom }
2394	foreach tag $labels {
2395	label $inner.${tag}label -text $tag -font "Arial 9"
2396	entry $inner.${tag} -font "Arial 9" -bg white \
2397	-textvariable [itcl::scope _settings($this-$tag)]
2398	bind $inner.${tag} <KeyPress-Return> \
2399	[itcl::code $this camera set ${tag}]
2400	blt::table $inner \
2401	$row,0 $inner.${tag}label -anchor e -pady 2 \
2402	$row,1 $inner.${tag} -anchor w -pady 2
2403	blt::table configure $inner r$row -resize none
2404	incr row
2405	}
2406
2407	blt::table configure $inner c* r* -resize none
2408	blt::table configure $inner c2 -resize expand
2409	blt::table configure $inner r$row -resize expand
2410	}
2411
2412	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2413	set flowobj ""
2414	foreach key [array names _obj2flow] {
2415	set flowobj $_obj2flow($key)
2416	break
2417	}
2418	if { $flowobj == "" } {
2419	return
2420	}
2421	if { [winfo exists $w.frame] } {
2422	destroy $w.frame
2423	}
2424	set inner [frame $w.frame]
2425	blt::table $w \
2426	5,0 $inner -fill both -cspan 2 -anchor nw
2427	array set hints [$flowobj hints]
2428	checkbutton $inner.showstreams -text "Streams Plane" \
2429	-variable [itcl::scope _settings($this-streams)] \
2430	-command [itcl::code $this streams $key $hints(name)] \
2431	-font "Arial 9"
2432	Rappture::Tooltip::for $inner.showstreams $hints(description)
2433
2434	checkbutton $inner.showarrows -text "Arrows" \
2435	-variable [itcl::scope _settings($this-arrows)] \
2436	-command [itcl::code $this arrows $key $hints(name)] \
2437	-font "Arial 9"
2438
2439	label $inner.particles -text "Particles" -font "Arial 9 bold"
2440	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2441
2442	blt::table $inner \
2443	1,0 $inner.showstreams -anchor w \
2444	2,0 $inner.showarrows -anchor w
2445	blt::table configure $inner c0 c1 -resize none
2446	blt::table configure $inner c2 -resize expand
2447
2448	set row 3
2449	set particles [$flowobj particles]
2450	if { [llength $particles] > 0 } {
2451	blt::table $inner $row,0 $inner.particles -anchor w
2452	incr row
2453	}
2454	foreach part $particles {
2455	array unset info
2456	array set info $part
2457	set name $info(name)
2458	if { ![info exists _settings($this-particles-$name)] } {
2459	set _settings($this-particles-$name) $info(hide)
2460	}
2461	checkbutton $inner.part$row -text $info(label) \
2462	-variable [itcl::scope _settings($this-particles-$name)] \
2463	-onvalue 0 -offvalue 1 \
2464	-command [itcl::code $this particles $key $name] \
2465	-font "Arial 9"
2466	Rappture::Tooltip::for $inner.part$row $info(description)
2467	blt::table $inner $row,0 $inner.part$row -anchor w
2468	if { !$_settings($this-particles-$name) } {
2469	$inner.part$row select
2470	}
2471	incr row
2472	}
2473	set boxes [$flowobj boxes]
2474	if { [llength $boxes] > 0 } {
2475	blt::table $inner $row,0 $inner.boxes -anchor w
2476	incr row
2477	}
2478	foreach box $boxes {
2479	array unset info
2480	array set info $box
2481	set name $info(name)
2482	if { ![info exists _settings($this-box-$name)] } {
2483	set _settings($this-box-$name) $info(hide)
2484	}
2485	checkbutton $inner.box$row -text $info(label) \
2486	-variable [itcl::scope _settings($this-box-$name)] \
2487	-onvalue 0 -offvalue 1 \
2488	-command [itcl::code $this box $key $name] \
2489	-font "Arial 9"
2490	Rappture::Tooltip::for $inner.box$row $info(description)
2491	blt::table $inner $row,0 $inner.box$row -anchor w
2492	if { !$_settings($this-box-$name) } {
2493	$inner.box$row select
2494	}
2495	incr row
2496	}
2497	blt::table configure $inner r* -resize none
2498	blt::table configure $inner r$row -resize expand
2499	blt::table configure $inner c3 -resize expand
2500	event generate [winfo parent [winfo parent $w]] <Configure>
2501	}
2502
2503	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2504	set bool $_settings($this-particles-$name)
2505	SendCmd "$tag particles configure {$name} -hide $bool"
2506	}
2507
2508	itcl::body Rappture::FlowvisViewer::box { tag name } {
2509	set bool $_settings($this-box-$name)
2510	SendCmd "$tag box configure {$name} -hide $bool"
2511	}
2512
2513	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2514	set bool $_settings($this-streams)
2515	SendCmd "$tag configure -slice $bool"
2516	}
2517
2518	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2519	set bool $_settings($this-arrows)
2520	SendCmd "$tag configure -arrows $bool"
2521	}
2522
2523	# ----------------------------------------------------------------------
2524	# USAGE: Slice move x\|y\|z <newval>
2525	#
2526	# Called automatically when the user drags the slider to move the
2527	# cut plane that slices 3D data. Gets the current value from the
2528	# slider and moves the cut plane to the appropriate point in the
2529	# data set.
2530	# ----------------------------------------------------------------------
2531	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2532	switch -- $option {
2533	move {
2534	if {[llength $args] != 2} {
2535	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2536	}
2537	set axis [lindex $args 0]
2538	set newval [lindex $args 1]
2539	set newpos [expr {0.01*$newval}]
2540
2541	# show the current value in the readout
2542
2543	set ids [CurrentVolumeIds -cutplanes]
2544	SendCmd "cutplane position $newpos $axis $ids"
2545	}
2546	default {
2547	error "bad option \"$option\": should be axis, move, or volume"
2548	}
2549	}
2550	}
2551
2552	# ----------------------------------------------------------------------
2553	# USAGE: SlicerTip <axis>
2554	#
2555	# Used internally to generate a tooltip for the x/y/z slicer controls.
2556	# Returns a message that includes the current slicer value.
2557	# ----------------------------------------------------------------------
2558	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2559	set val [$itk_component(${axis}CutScale) get]
2560	# set val [expr {0.01*($val-50)
2561	# *($_limits(${axis}max)-$_limits(${axis}min))
2562	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2563	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2564	}
2565
2566	itcl::body Rappture::FlowvisViewer::Resize {} {
2567	$_arcball resize $_width $_height
2568	SendCmd "screen size $_width $_height"
2569	set _resizePending 0
2570	}
2571
2572	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2573	set _width $w
2574	set _height $h
2575	$_arcball resize $w $h
2576	if { !$_resizePending } {
2577	$_dispatcher event -after 200 !resize
2578	set _resizePending 1
2579	}
2580	}
2581
2582	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2583	if { !$_resizeLegendPending } {
2584	$_dispatcher event -after 100 !legend
2585	set _resizeLegendPending 1
2586	}
2587	}
2588
2589	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2590	set _flow(goto) $nSteps
2591	if { !$_gotoPending } {
2592	$_dispatcher event -after 1000 !goto
2593	set _gotoPending 1
2594	}
2595	}
2596
2597	# camera --
2598	itcl::body Rappture::FlowvisViewer::camera {option args} {
2599	switch -- $option {
2600	"show" {
2601	puts [array get _view]
2602	}
2603	"set" {
2604	set who [lindex $args 0]
2605	set x $_settings($this-$who)
2606	set code [catch { string is double $x } result]
2607	if { $code != 0 \|\| !$result } {
2608	set _settings($this-$who) $_view($who)
2609	return
2610	}
2611	switch -- $who {
2612	"xpan" - "ypan" {
2613	set _view($who) $_settings($this-$who)
2614	PanCamera
2615	}
2616	"qx" - "qy" - "qz" - "qw" {
2617	set _view($who) $_settings($this-$who)
2618	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2619	$_arcball quaternion $q
2620	SendCmd "camera orient $q"
2621	}
2622	"zoom" {
2623	set _view($who) $_settings($this-$who)
2624	SendCmd "camera zoom $_view(zoom)"
2625	}
2626	}
2627	}
2628	}
2629	}
2630
2631	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2632	set tag "$dataobj-$comp"
2633	if { ![info exists _obj2flow($tag)] } {
2634	append cmd "flow add $tag\n"
2635	append cmd "$tag data follows $nbytes $extents\n"
2636	return $cmd
2637	}
2638	set flowobj $_obj2flow($tag)
2639	if { $flowobj == "" } {
2640	puts stderr "no flowobj"
2641	return ""
2642	}
2643	set cmd {}
2644	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2645	array set info [$flowobj hints]
2646	set _settings($this-volume) $info(volume)
2647	set _settings($this-outline) $info(outline)
2648	set _settings($this-arrows) $info(arrows)
2649	set _settings($this-duration) $info(duration)
2650	$itk_component(speed) value $info(speed)
2651	append cmd "flow add $tag"
2652	append cmd " -position $info(position)"
2653	append cmd " -axis $info(axis)"
2654	append cmd " -volume $info(volume)"
2655	append cmd " -outline $info(outline)"
2656	append cmd " -slice $info(streams)"
2657	append cmd " -arrows $info(arrows)\n"
2658	foreach part [$flowobj particles] {
2659	array unset info
2660	array set info $part
2661	set color [Color2RGB $info(color)]
2662	append cmd "$tag particles add $info(name)"
2663	append cmd " -position $info(position)"
2664	append cmd " -hide $info(hide)"
2665	append cmd " -axis $info(axis)"
2666	append cmd " -color {$color}"
2667	append cmd " -size $info(size)\n"
2668	}
2669	foreach box [$flowobj boxes] {
2670	array unset info
2671	set info(corner1) ""
2672	set info(corner2) ""
2673	array set info $box
2674	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2675	continue
2676	}
2677	set color [Color2RGB $info(color)]
2678	append cmd "$tag box add $info(name)"
2679	append cmd " -color {$color}"
2680	append cmd " -hide $info(hide)"
2681	append cmd " -linewidth $info(linewidth) "
2682	append cmd " -corner1 {$info(corner1)} "
2683	append cmd " -corner2 {$info(corner2)}\n"
2684	}
2685	append cmd "$tag data follows $nbytes $extents\n"
2686	return $cmd
2687	}
2688
2689
2690	#
2691	# flow --
2692	#
2693	# Called when the user clicks on the stop or play buttons
2694	# for flow visualization.
2695	#
2696	# $this flow play
2697	# $this flow stop
2698	# $this flow toggle
2699	# $this flow reset
2700	# $this flow pause
2701	# $this flow next
2702	#
2703	itcl::body Rappture::FlowvisViewer::flow { args } {
2704	set option [lindex $args 0]
2705	switch -- $option {
2706	"goto2" {
2707	puts stderr "actually sending \"flow goto $_flow(goto)\""
2708	SendCmd "flow goto $_flow(goto)"
2709	set _gotoPending 0
2710	}
2711	"goto" {
2712	puts stderr "flow goto to $_settings($this-currenttime)"
2713	# Figure out how many steps to the current time based upon
2714	# the speed and duration.
2715	set current $_settings($this-currenttime)
2716	set speed [$itk_component(speed) value]
2717	set time [str2millisecs $_settings($this-duration)]
2718	$itk_component(dial) configure -max $time
2719	set delay [expr int(round(500.0/$speed))]
2720	set timePerStep [expr {double($time) / $delay}]
2721	set nSteps [expr {int(ceil($current/$timePerStep))}]
2722	EventuallyGoto $nSteps
2723	}
2724	"speed" {
2725	set speed [$itk_component(speed) value]
2726	set _flow(delay) [expr int(round(500.0/$speed))]
2727	}
2728	"duration" {
2729	set max [str2millisecs $_settings($this-duration)]
2730	if { $max < 0 } {
2731	bell
2732	return
2733	}
2734	set _flow(duration) $max
2735	set _settings($this-duration) [millisecs2str $max]
2736	$itk_component(dial) configure -max $max
2737	}
2738	"off" {
2739	set _flow(state) 0
2740	$_dispatcher cancel !play
2741	$itk_component(play) deselect
2742	}
2743	"on" {
2744	flow speed
2745	flow duration
2746	set _flow(state) 1
2747	set _settings($this-currenttime) 0
2748	$itk_component(play) select
2749	}
2750	"stop" {
2751	if { $_flow(state) } {
2752	flow off
2753	flow reset
2754	}
2755	}
2756	"pause" {
2757	if { $_flow(state) } {
2758	flow off
2759	}
2760	}
2761	"play" {
2762	# If the flow is currently off, then restart it.
2763	if { !$_flow(state) } {
2764	flow on
2765	# If we're at the end of the flow, reset the flow.
2766	set _settings($this-currenttime) \
2767	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2768	if { $_settings($this-currenttime) >= $_flow(duration) } {
2769	set _settings($this-step) 1
2770	SendCmd "flow reset"
2771	}
2772	flow next
2773	}
2774	}
2775	"toggle" {
2776	if { $_settings($this-play) } {
2777	flow play
2778	} else {
2779	flow pause
2780	}
2781	}
2782	"reset" {
2783	set _settings($this-currenttime) 0
2784	SendCmd "flow reset"
2785	}
2786	"next" {
2787	if { ![winfo viewable $itk_component(3dview)] } {
2788	flow stop
2789	return
2790	}
2791	set _settings($this-currenttime) \
2792	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2793	if { $_settings($this-currenttime) >= $_flow(duration) } {
2794	if { !$_settings($this-loop) } {
2795	flow off
2796	return
2797	}
2798	flow reset
2799	} else {
2800	SendCmd "flow next"
2801	}
2802	$_dispatcher event -after $_flow(delay) !play
2803	}
2804	default {
2805	error "bad option \"$option\": should be play, stop, toggle, or reset."
2806	}
2807	}
2808	}
2809
2810	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2811	switch -- $option {
2812	"start" {
2813	$_dispatcher dispatch $this !waiticon \
2814	"[itcl::code $this WaitIcon "next" $widget] ; list"
2815	set _icon 0
2816	$widget configure -image [Rappture::icon bigroller${_icon}]
2817	$_dispatcher event -after 100 !waiticon
2818	}
2819	"next" {
2820	incr _icon
2821	if { $_icon >= 8 } {
2822	set _icon 0
2823	}
2824	$widget configure -image [Rappture::icon bigroller${_icon}]
2825	$_dispatcher event -after 100 !waiticon
2826	}
2827	"stop" {
2828	$_dispatcher cancel !waiticon
2829	}
2830	}
2831	}
2832
2833	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2834	set token "print[incr _nextToken]"
2835	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2836	set $var ""
2837
2838	# Setup an automatic timeout procedure.
2839	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2840
2841	set popup .flowvisviewerprint
2842	if {![winfo exists $popup]} {
2843	Rappture::Balloon $popup -title "Generating file..."
2844	set inner [$popup component inner]
2845	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2846	label $inner.please -text "This may take a minute." -font "Arial 10"
2847	label $inner.icon -image [Rappture::icon bigroller0]
2848	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2849	-command [list set $var ""]
2850	blt::table $inner \
2851	0,0 $inner.title -cspan 2 \
2852	1,0 $inner.please -anchor w \
2853	1,1 $inner.icon -anchor e \
2854	2,0 $inner.cancel -cspan 2
2855	blt::table configure $inner r0 -pady 4
2856	blt::table configure $inner r2 -pady 4
2857	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2858	} else {
2859	set inner [$popup component inner]
2860	}
2861
2862	$_dispatcher event -after 60000 !pngtimeout
2863	WaitIcon start $inner.icon
2864	grab set $inner
2865	focus $inner.cancel
2866
2867	SendCmd "print $token $width $height"
2868
2869	$popup activate $widget below
2870	update idletasks
2871	update
2872	# We wait here for either
2873	# 1) the png to be delivered or
2874	# 2) timeout or
2875	# 3) user cancels the operation.
2876	tkwait variable $var
2877
2878	# Clean up.
2879	$_dispatcher cancel !pngtimeout
2880	WaitIcon stop $inner.icon
2881	grab release $inner
2882	$popup deactivate
2883	update
2884
2885	if { $_hardcopy($this-$token) != "" } {
2886	return [list .png $_hardcopy($this-$token)]
2887	}
2888	return ""
2889	}
2890
2891	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2892	set token "movie[incr _nextToken]"
2893	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2894	set $var ""
2895
2896	# Setup an automatic timeout procedure.
2897	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2898	set popup .flowvisviewermovie
2899	if {![winfo exists $popup]} {
2900	Rappture::Balloon $popup -title "Generating movie..."
2901	set inner [$popup component inner]
2902	label $inner.title -text "Generating movie for download" \
2903	-font "Arial 10 bold"
2904	label $inner.please -text "This may take a few minutes." \
2905	-font "Arial 10"
2906	label $inner.icon -image [Rappture::icon bigroller0]
2907	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2908	-command [list set $var ""]
2909	blt::table $inner \
2910	0,0 $inner.title -cspan 2 \
2911	1,0 $inner.please -anchor w \
2912	1,1 $inner.icon -anchor e \
2913	2,0 $inner.cancel -cspan 2
2914	blt::table configure $inner r0 -pady 4
2915	blt::table configure $inner r2 -pady 4
2916	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2917	} else {
2918	set inner [$popup component inner]
2919	}
2920	update
2921	# Timeout is set to 10 minutes.
2922	$_dispatcher event -after 600000 !movietimeout
2923	WaitIcon start $inner.icon
2924	grab set $inner
2925	focus $inner.cancel
2926
2927	flow duration
2928	flow speed
2929	set nframes [expr round($_flow(duration) / $_flow(delay))]
2930	set framerate [expr 1000.0 / $_flow(delay)]
2931
2932	# These are specific to MPEG1 video generation
2933	set framerate 25.0
2934	set bitrate 6.0e+6
2935
2936	set start [clock seconds]
2937	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2938
2939	$popup activate $widget below
2940	update idletasks
2941	update
2942	# We wait here until
2943	# 1. the movie is delivered or
2944	# 2. we've timed out or
2945	# 3. the user has canceled the operation.b
2946	tkwait variable $var
2947
2948	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2949
2950	# Clean up.
2951	$_dispatcher cancel !movietimeout
2952	WaitIcon stop $inner.icon
2953	grab release $inner
2954	$popup deactivate
2955	destroy $popup
2956	update
2957
2958	# This will both cancel the movie generation (if it hasn't already
2959	# completed) and reset the flow.
2960	SendCmd "flow reset"
2961	if { $_hardcopy($this-$token) != "" } {
2962	return [list .mpg $_hardcopy($this-$token)]
2963	}
2964	return ""
2965	}
2966
2967	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2968	set parts [split $value :]
2969	set secs 0
2970	set mins 0
2971	if { [llength $parts] == 1 } {
2972	scan [lindex $parts 0] "%d" secs
2973	} else {
2974	scan [lindex $parts 1] "%d" secs
2975	scan [lindex $parts 0] "%d" mins
2976	}
2977	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2978	if { $ms > 600000.0 } {
2979	set ms 600000.0
2980	}
2981	if { $ms == 0.0 } {
2982	set ms 60000.0
2983	}
2984	return $ms
2985	}
2986
2987	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2988	set min [expr floor($value / 60000.0)]
2989	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2990	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2991	}
2992
2993	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2994	array set positions {
2995	front "1 0 0 0"
2996	back "0 0 1 0"
2997	left "0.707107 0 -0.707107 0"
2998	right "0.707107 0 0.707107 0"
2999	top "0.707107 -0.707107 0 0"
3000	bottom "0.707107 0.707107 0 0"
3001	}
3002	foreach name { qw qx qy qz } value $positions($side) {
3003	set _view($name) $value
3004	}
3005	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3006	$_arcball quaternion $q
3007	SendCmd "camera orient $q"
3008	SendCmd "camera reset"
3009	set _view(xpan) 0.0
3010	set _view(ypan) 0.0
3011	set _view(zoom) 1.0
3012	set _settings($this-xpan) $_view(xpan)
3013	set _settings($this-ypan) $_view(ypan)
3014	set _settings($this-zoom) $_view(zoom)
3015	}

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