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source: trunk/gui/scripts/flowvisviewer.tcl @ 4661

Last change on this file since 4661 was 4493, checked in by ldelgass, 10 years ago
comment fixes
File size: 104.6 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	#
6	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7	# It connects to the Flowvis server running on a rendering farm, transmits
8	# data, and displays the results.
9	#
10	# ======================================================================
11	# AUTHOR: Michael McLennan, Purdue University
12	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
13	#
14	# See the file "license.terms" for information on usage and redistribution of
15	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16	# ======================================================================
17	package require Itk
18	package require BLT
19	package require Img
20
21	option add *FlowvisViewer.width 5i widgetDefault
22	option add FlowvisViewercursor crosshair widgetDefault
23	option add *FlowvisViewer.height 4i widgetDefault
24	option add *FlowvisViewer.foreground black widgetDefault
25	option add *FlowvisViewer.controlBackground gray widgetDefault
26	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27	option add *FlowvisViewer.plotBackground black widgetDefault
28	option add *FlowvisViewer.plotForeground white widgetDefault
29	option add *FlowvisViewer.plotOutline gray widgetDefault
30	option add *FlowvisViewer.font \
31	--helvetica-medium-r-normal--12-* widgetDefault
32
33	# must use this name -- plugs into Rappture::resources::load
34	proc FlowvisViewer_init_resources {} {
35	Rappture::resources::register \
36	nanovis_server Rappture::FlowvisViewer::SetServerList
37	}
38
39	itcl::class Rappture::FlowvisViewer {
40	inherit Rappture::VisViewer
41
42	itk_option define -plotforeground plotForeground Foreground ""
43	itk_option define -plotbackground plotBackground Background ""
44	itk_option define -plotoutline plotOutline PlotOutline ""
45
46	private variable _volcomponents ; # Array of components found
47	private variable _componentsList ; # Array of components found
48	private method BuildVolumeComponents {}
49	private method GetDatasetsWithComponent { cname }
50
51	constructor { hostlist args } {
52	Rappture::VisViewer::constructor $hostlist
53	} {
54	# defined below
55	}
56	destructor {
57	# defined below
58	}
59	public proc SetServerList { namelist } {
60	Rappture::VisViewer::SetServerList "nanovis" $namelist
61	}
62	public method add {dataobj {settings ""}}
63	public method camera {option args}
64	public method delete {args}
65	public method disconnect {}
66	public method download {option args}
67	public method flow {option}
68	public method get {args}
69	public method isconnected {}
70	public method limits { cname }
71	public method overMarker { m x }
72	public method parameters {title args} {
73	# do nothing
74	}
75	public method removeDuplicateMarker { m x }
76	public method scale {args}
77	public method updateTransferFunctions {}
78
79	protected method Connect {}
80	protected method CurrentVolumeIds {{what -all}}
81	protected method Disconnect {}
82	protected method Resize {}
83	protected method ResizeLegend {}
84	protected method AdjustSetting {what {value ""}}
85	protected method InitSettings { args }
86	protected method Pan {option x y}
87	protected method Rebuild {}
88	protected method ReceiveData { args }
89	protected method ReceiveImage { args }
90	protected method ReceiveLegend { tf vmin vmax size }
91	protected method Rotate {option x y}
92	protected method SendTransferFuncs {}
93	protected method Slice {option args}
94	protected method SlicerTip {axis}
95	protected method Zoom {option}
96
97	# soon to be removed.
98	protected method Flow {option args}
99	protected method Play {}
100	protected method Pause {}
101
102
103	# The following methods are only used by this class.
104
105	private method AddIsoMarker { x y }
106	private method BuildCameraTab {}
107	private method BuildCutplanesTab {}
108	private method BuildViewTab {}
109	private method BuildVolumeTab {}
110	private method ComputeTransferFunc { tf }
111	private method EventuallyResize { w h }
112	private method EventuallyGoto { nSteps }
113	private method EventuallyResizeLegend { }
114	private method FlowCmd { dataobj comp nbytes extents }
115	private method GetMovie { widget width height }
116	private method GetPngImage { widget width height }
117	private method NameTransferFunc { dataobj comp }
118	private method PanCamera {}
119	private method ParseLevelsOption { tf levels }
120	private method ParseMarkersOption { tf markers }
121	private method WaitIcon { option widget }
122	private method str2millisecs { value }
123	private method millisecs2str { value }
124	private method GetFlowInfo { widget }
125	private method particles { tag name }
126	private method box { tag name }
127	private method streams { tag name }
128	private method arrows { tag name }
129	private method SetOrientation { side }
130
131	private variable _arcball ""
132	private variable _dlist "" ;# list of data objects
133	private variable _allDataObjs
134	private variable _obj2ovride ;# maps dataobj => style override
135	private variable _serverObjs ;# maps dataobj-component to volume ID
136	# in the server
137	private variable _recvObjs ;# list of data objs to send to server
138	private variable _obj2style ;# maps dataobj-component to transfunc
139	private variable _style2objs ;# maps tf back to list of
140	# dataobj-components using the tf.
141	private variable _obj2flow; # Maps dataobj-component to a flow.
142
143	private variable _reset 1; # Connection to server has been reset
144	private variable _click ;# info used for rotate operations
145	private variable _limits ;# autoscale min/max for all axes
146	private variable _view ;# view params for 3D view
147	private variable _isomarkers ;# array of isosurface level values 0..1
148	private common _settings
149	private variable _activeTf "" ;# The currently active transfer function.
150	private variable _first "" ;# This is the topmost volume.
151	private variable _nextToken 0
152	private variable _icon 0
153	private variable _flow
154	# This
155	# indicates which isomarkers and transfer
156	# function to use when changing markers,
157	# opacity, or thickness.
158	private common _downloadPopup ;# download options from popup
159
160	private common _hardcopy
161	private variable _width 0
162	private variable _height 0
163	private variable _resizePending 0
164	private variable _resizeLegendPending 0
165	private variable _gotoPending 0
166	}
167
168	itk::usual FlowvisViewer {
169	keep -background -foreground -cursor -font
170	keep -plotbackground -plotforeground
171	}
172
173	# ----------------------------------------------------------------------
174	# CONSTRUCTOR
175	# ----------------------------------------------------------------------
176	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
177	set _serverType "nanovis"
178
179	# Draw legend event
180	$_dispatcher register !legend
181	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
182
183	# Send transferfunctions event
184	$_dispatcher register !send_transfunc
185	$_dispatcher dispatch $this !send_transfunc \
186	"[itcl::code $this SendTransferFuncs]; list"
187
188	# Rebuild event.
189	$_dispatcher register !rebuild
190	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
191
192	# Resize event.
193	$_dispatcher register !resize
194	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
195
196	$_dispatcher register !play
197	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
198
199	# Draw legend event
200	$_dispatcher register !goto
201	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
202
203	$_dispatcher register !movietimeout
204	$_dispatcher register !waiticon
205
206	set _flow(state) 0
207
208	array set _downloadPopup {
209	format draft
210	}
211	#
212	# Populate parser with commands handle incoming requests
213	#
214	$_parser alias image [itcl::code $this ReceiveImage]
215	$_parser alias legend [itcl::code $this ReceiveLegend]
216	$_parser alias data [itcl::code $this ReceiveData]
217
218	# Initialize the view to some default parameters.
219	array set _view {
220	qw 0.853553
221	qx -0.353553
222	qy 0.353553
223	qz 0.146447
224	zoom 1.0
225	xpan 0
226	ypan 0
227	}
228	set _arcball [blt::arcball create 100 100]
229	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
230	$_arcball quaternion $q
231
232	set _limits(v) [list 0.0 1.0]
233	set _reset 1
234
235	array set _settings [subst {
236	$this-qw $_view(qw)
237	$this-qx $_view(qx)
238	$this-qy $_view(qy)
239	$this-qz $_view(qz)
240	$this-zoom $_view(zoom)
241	$this-xpan $_view(xpan)
242	$this-ypan $_view(ypan)
243	$this-arrows 0
244	$this-currenttime 0
245	$this-duration 1:00
246	$this-loop 0
247	$this-play 0
248	$this-speed 500
249	$this-step 0
250	$this-streams 0
251	$this-volume 1
252	$this-ambient 60
253	$this-diffuse 40
254	$this-light2side 1
255	$this-opacity 100
256	$this-specularLevel 30
257	$this-specularExponent 90
258	$this-thickness 350
259	$this-transp 50
260	$this-cutplaneVisible 0
261	$this-xcutplane 1
262	$this-xcutposition 0
263	$this-ycutplane 1
264	$this-ycutposition 0
265	$this-zcutplane 1
266	$this-zcutposition 0
267	}]
268
269	itk_component add 3dview {
270	label $itk_component(plotarea).view -image $_image(plot) \
271	-highlightthickness 0 -borderwidth 0
272	} {
273	usual
274	ignore -highlightthickness -borderwidth -background
275	}
276	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
277
278	set f [$itk_component(main) component controls]
279	itk_component add reset {
280	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
281	-highlightthickness 0 \
282	-image [Rappture::icon reset-view] \
283	-command [itcl::code $this Zoom reset]
284	} {
285	usual
286	ignore -highlightthickness
287	}
288	pack $itk_component(reset) -side top -padx 2 -pady 2
289	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
290
291	itk_component add zoomin {
292	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
293	-highlightthickness 0 \
294	-image [Rappture::icon zoom-in] \
295	-command [itcl::code $this Zoom in]
296	} {
297	usual
298	ignore -highlightthickness
299	}
300	pack $itk_component(zoomin) -side top -padx 2 -pady 2
301	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
302
303	itk_component add zoomout {
304	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
305	-highlightthickness 0 \
306	-image [Rappture::icon zoom-out] \
307	-command [itcl::code $this Zoom out]
308	} {
309	usual
310	ignore -highlightthickness
311	}
312	pack $itk_component(zoomout) -side top -padx 2 -pady 2
313	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
314
315	itk_component add volume {
316	Rappture::PushButton $f.volume \
317	-onimage [Rappture::icon volume-on] \
318	-offimage [Rappture::icon volume-off] \
319	-command [itcl::code $this AdjustSetting volume] \
320	-variable [itcl::scope _settings($this-volume)]
321	}
322	$itk_component(volume) select
323	Rappture::Tooltip::for $itk_component(volume) \
324	"Toggle the volume cloud on/off"
325	pack $itk_component(volume) -padx 2 -pady 2
326
327	itk_component add cutplane {
328	Rappture::PushButton $f.cutplane \
329	-onimage [Rappture::icon cutbutton] \
330	-offimage [Rappture::icon cutbutton] \
331	-variable [itcl::scope _settings($this-cutplaneVisible)] \
332	-command [itcl::code $this AdjustSetting cutplaneVisible]
333	}
334	Rappture::Tooltip::for $itk_component(cutplane) \
335	"Show/Hide cutplanes"
336	pack $itk_component(cutplane) -padx 2 -pady 2
337
338	if { [catch {
339	BuildViewTab
340	BuildVolumeTab
341	BuildCutplanesTab
342	BuildCameraTab
343	} errs] != 0 } {
344	global errorInfo
345	puts stderr "errs=$errs errorInfo=$errorInfo"
346	}
347
348	bind $itk_component(3dview) <Configure> \
349	[itcl::code $this EventuallyResize %w %h]
350
351	# Legend
352	set _image(legend) [image create photo]
353	itk_component add legend {
354	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
355	} {
356	usual
357	ignore -highlightthickness
358	rename -background -plotbackground plotBackground Background
359	}
360	bind $itk_component(legend) <Configure> \
361	[itcl::code $this EventuallyResizeLegend]
362
363	# Hack around the Tk panewindow. The problem is that the requested
364	# size of the 3d view isn't set until an image is retrieved from
365	# the server. So the panewindow uses the tiny size.
366	set w 10000
367	pack forget $itk_component(3dview)
368	blt::table $itk_component(plotarea) \
369	0,0 $itk_component(3dview) -fill both -reqwidth $w \
370	1,0 $itk_component(legend) -fill x
371	blt::table configure $itk_component(plotarea) r1 -resize none
372	# Create flow controls...
373
374	itk_component add flowcontrols {
375	frame $itk_interior.flowcontrols
376	} {
377	usual
378	rename -background -controlbackground controlBackground Background
379	}
380	pack forget $itk_component(main)
381	blt::table $itk_interior \
382	0,0 $itk_component(main) -fill both \
383	1,0 $itk_component(flowcontrols) -fill x
384	blt::table configure $itk_interior r1 -resize none
385
386	# Rewind
387	itk_component add rewind {
388	button $itk_component(flowcontrols).reset \
389	-borderwidth 1 -padx 1 -pady 1 \
390	-image [Rappture::icon flow-rewind] \
391	-command [itcl::code $this flow reset]
392	} {
393	usual
394	ignore -borderwidth
395	rename -highlightbackground -controlbackground controlBackground \
396	Background
397	}
398	Rappture::Tooltip::for $itk_component(rewind) \
399	"Rewind flow"
400
401	# Stop
402	itk_component add stop {
403	button $itk_component(flowcontrols).stop \
404	-borderwidth 1 -padx 1 -pady 1 \
405	-image [Rappture::icon flow-stop] \
406	-command [itcl::code $this flow stop]
407	} {
408	usual
409	ignore -borderwidth
410	rename -highlightbackground -controlbackground controlBackground \
411	Background
412	}
413	Rappture::Tooltip::for $itk_component(stop) \
414	"Stop flow"
415
416	# Play
417	itk_component add play {
418	Rappture::PushButton $itk_component(flowcontrols).play \
419	-onimage [Rappture::icon flow-pause] \
420	-offimage [Rappture::icon flow-play] \
421	-variable [itcl::scope _settings($this-play)] \
422	-command [itcl::code $this flow toggle]
423	}
424	set fg [option get $itk_component(hull) font Font]
425	Rappture::Tooltip::for $itk_component(play) \
426	"Play/Pause flow"
427
428	# Loop
429	itk_component add loop {
430	Rappture::PushButton $itk_component(flowcontrols).loop \
431	-onimage [Rappture::icon flow-loop] \
432	-offimage [Rappture::icon flow-loop] \
433	-variable [itcl::scope _settings($this-loop)]
434	}
435	Rappture::Tooltip::for $itk_component(loop) \
436	"Play continuously"
437
438	itk_component add dial {
439	Rappture::Flowdial $itk_component(flowcontrols).dial \
440	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
441	-linecolor "" -activelinecolor "" \
442	-min 0.0 -max 1.0 \
443	-variable [itcl::scope _settings($this-currenttime)] \
444	-knobimage [Rappture::icon knob2] -knobposition center@middle
445	} {
446	usual
447	ignore -dialprogresscolor
448	rename -background -controlbackground controlBackground Background
449	}
450	$itk_component(dial) current 0.0
451	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
452	# Duration
453	itk_component add duration {
454	entry $itk_component(flowcontrols).duration \
455	-textvariable [itcl::scope _settings($this-duration)] \
456	-bg white -width 6 -font "arial 9"
457	} {
458	usual
459	ignore -highlightthickness -background
460	}
461	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
462	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
463	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
464	Rappture::Tooltip::for $itk_component(duration) \
465	"Set duration of flow (format is min:sec)"
466
467
468	itk_component add durationlabel {
469	label $itk_component(flowcontrols).durationl \
470	-text "Duration:" -font $fg \
471	-highlightthickness 0
472	} {
473	usual
474	ignore -highlightthickness
475	rename -background -controlbackground controlBackground Background
476	}
477
478	itk_component add speedlabel {
479	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
480	-highlightthickness 0
481	} {
482	usual
483	ignore -highlightthickness
484	rename -background -controlbackground controlBackground Background
485	}
486
487	# Speed
488	itk_component add speed {
489	Rappture::Flowspeed $itk_component(flowcontrols).speed \
490	-min 1 -max 10 -width 3 -font "arial 9"
491	} {
492	usual
493	ignore -highlightthickness
494	rename -background -controlbackground controlBackground Background
495	}
496	Rappture::Tooltip::for $itk_component(speed) \
497	"Change speed of flow"
498
499	$itk_component(speed) value 1
500	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
501
502
503	blt::table $itk_component(flowcontrols) \
504	0,0 $itk_component(rewind) -padx {3 0} \
505	0,1 $itk_component(stop) -padx {2 0} \
506	0,2 $itk_component(play) -padx {2 0} \
507	0,3 $itk_component(loop) -padx {2 0} \
508	0,4 $itk_component(dial) -fill x -padx {2 0 } \
509	0,5 $itk_component(duration) -padx { 0 0} \
510	0,7 $itk_component(speed) -padx {2 3}
511
512	# 0,6 $itk_component(speedlabel) -padx {2 0}
513	blt::table configure $itk_component(flowcontrols) c* -resize none
514	blt::table configure $itk_component(flowcontrols) c4 -resize both
515	blt::table configure $itk_component(flowcontrols) r0 -pady 1
516	# Bindings for rotation via mouse
517	bind $itk_component(3dview) <ButtonPress-1> \
518	[itcl::code $this Rotate click %x %y]
519	bind $itk_component(3dview) <B1-Motion> \
520	[itcl::code $this Rotate drag %x %y]
521	bind $itk_component(3dview) <ButtonRelease-1> \
522	[itcl::code $this Rotate release %x %y]
523
524	bind $itk_component(3dview) <Configure> \
525	[itcl::code $this EventuallyResize %w %h]
526
527	# Bindings for panning via mouse
528	bind $itk_component(3dview) <ButtonPress-2> \
529	[itcl::code $this Pan click %x %y]
530	bind $itk_component(3dview) <B2-Motion> \
531	[itcl::code $this Pan drag %x %y]
532	bind $itk_component(3dview) <ButtonRelease-2> \
533	[itcl::code $this Pan release %x %y]
534
535	# Bindings for panning via keyboard
536	bind $itk_component(3dview) <KeyPress-Left> \
537	[itcl::code $this Pan set -10 0]
538	bind $itk_component(3dview) <KeyPress-Right> \
539	[itcl::code $this Pan set 10 0]
540	bind $itk_component(3dview) <KeyPress-Up> \
541	[itcl::code $this Pan set 0 -10]
542	bind $itk_component(3dview) <KeyPress-Down> \
543	[itcl::code $this Pan set 0 10]
544	bind $itk_component(3dview) <Shift-KeyPress-Left> \
545	[itcl::code $this Pan set -2 0]
546	bind $itk_component(3dview) <Shift-KeyPress-Right> \
547	[itcl::code $this Pan set 2 0]
548	bind $itk_component(3dview) <Shift-KeyPress-Up> \
549	[itcl::code $this Pan set 0 -2]
550	bind $itk_component(3dview) <Shift-KeyPress-Down> \
551	[itcl::code $this Pan set 0 2]
552
553	# Bindings for zoom via keyboard
554	bind $itk_component(3dview) <KeyPress-Prior> \
555	[itcl::code $this Zoom out]
556	bind $itk_component(3dview) <KeyPress-Next> \
557	[itcl::code $this Zoom in]
558
559	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
560
561	if {[string equal "x11" [tk windowingsystem]]} {
562	# Bindings for zoom via mouse
563	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
564	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
565	}
566
567	set _image(download) [image create photo]
568
569	eval itk_initialize $args
570
571	Connect
572	}
573
574	# ----------------------------------------------------------------------
575	# DESTRUCTOR
576	# ----------------------------------------------------------------------
577	itcl::body Rappture::FlowvisViewer::destructor {} {
578	$_dispatcher cancel !rebuild
579	$_dispatcher cancel !send_transfunc
580	image delete $_image(plot)
581	image delete $_image(legend)
582	image delete $_image(download)
583	catch { blt::arcball destroy $_arcball }
584	array unset _settings $this-*
585	}
586
587	# ----------------------------------------------------------------------
588	# USAGE: add <dataobj> ?<settings>?
589	#
590	# Clients use this to add a data object to the plot. The optional
591	# <settings> are used to configure the plot. Allowed settings are
592	# -color, -brightness, -width, -linestyle, and -raise.
593	# ----------------------------------------------------------------------
594	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
595	array set params {
596	-color auto
597	-width 1
598	-linestyle solid
599	-brightness 0
600	-raise 0
601	-description ""
602	-param ""
603	}
604	array set params $settings
605	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
606	# can't handle -autocolors yet
607	set params(-color) black
608	}
609	foreach comp [$dataobj components] {
610	set flowobj [$dataobj flowhints $comp]
611	if { $flowobj == "" } {
612	puts stderr "no flowhints $dataobj-$comp"
613	continue
614	}
615	set _obj2flow($dataobj-$comp) $flowobj
616	}
617	set pos [lsearch -exact $_dlist $dataobj]
618	if {$pos < 0} {
619	lappend _dlist $dataobj
620	set _allDataObjs($dataobj) 1
621	set _obj2ovride($dataobj-color) $params(-color)
622	set _obj2ovride($dataobj-width) $params(-width)
623	set _obj2ovride($dataobj-raise) $params(-raise)
624	$_dispatcher event -idle !rebuild
625	}
626	}
627
628	# ----------------------------------------------------------------------
629	# USAGE: get ?-objects?
630	# USAGE: get ?-image 3dview\|legend?
631	#
632	# Clients use this to query the list of objects being plotted, in
633	# order from bottom to top of this result. The optional "-image"
634	# flag can also request the internal images being shown.
635	# ----------------------------------------------------------------------
636	itcl::body Rappture::FlowvisViewer::get {args} {
637	if {[llength $args] == 0} {
638	set args "-objects"
639	}
640
641	set op [lindex $args 0]
642	switch -- $op {
643	-objects {
644	# put the dataobj list in order according to -raise options
645	set dlist $_dlist
646	foreach obj $dlist {
647	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
648	set i [lsearch -exact $dlist $obj]
649	if {$i >= 0} {
650	set dlist [lreplace $dlist $i $i]
651	lappend dlist $obj
652	}
653	}
654	}
655	return $dlist
656	}
657	-image {
658	if {[llength $args] != 2} {
659	error "wrong # args: should be \"get -image 3dview\|legend\""
660	}
661	switch -- [lindex $args end] {
662	3dview {
663	return $_image(plot)
664	}
665	legend {
666	return $_image(legend)
667	}
668	default {
669	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
670	}
671	}
672	}
673	default {
674	error "bad option \"$op\": should be -objects or -image"
675	}
676	}
677	}
678
679	# ----------------------------------------------------------------------
680	# USAGE: delete ?<dataobj1> <dataobj2> ...?
681	#
682	# Clients use this to delete a dataobj from the plot. If no dataobjs
683	# are specified, then all dataobjs are deleted. No data objects are
684	# deleted. They are only removed from the display list.
685	#
686	# ----------------------------------------------------------------------
687	itcl::body Rappture::FlowvisViewer::delete {args} {
688	flow stop
689	if {[llength $args] == 0} {
690	set args $_dlist
691	}
692
693	# Delete all specified dataobjs
694	set changed 0
695	foreach dataobj $args {
696	set pos [lsearch -exact $_dlist $dataobj]
697	if { $pos >= 0 } {
698	foreach comp [$dataobj components] {
699	array unset _limits $dataobj-$comp-*
700	}
701	set _dlist [lreplace $_dlist $pos $pos]
702	array unset _obj2ovride $dataobj-*
703	array unset _obj2flow $dataobj-*
704	array unset _serverObjs $dataobj-*
705	array unset _obj2style $dataobj-*
706	set changed 1
707	}
708	}
709	# If anything changed, then rebuild the plot
710	if {$changed} {
711	# Repair the reverse lookup
712	foreach tf [array names _style2objs] {
713	set list {}
714	foreach {dataobj comp} $_style2objs($tf) break
715	if { [info exists _serverObjs($dataobj-$comp)] } {
716	lappend list $dataobj $comp
717	}
718	if { $list == "" } {
719	array unset _style2objs $tf
720	} else {
721	set _style2objs($tf) $list
722	}
723	}
724	$_dispatcher event -idle !rebuild
725	}
726	}
727
728	# ----------------------------------------------------------------------
729	# USAGE: scale ?<data1> <data2> ...?
730	#
731	# Sets the default limits for the overall plot according to the
732	# limits of the data for all of the given <data> objects. This
733	# accounts for all objects--even those not showing on the screen.
734	# Because of this, the limits are appropriate for all objects as
735	# the user scans through data in the ResultSet viewer.
736	# ----------------------------------------------------------------------
737	itcl::body Rappture::FlowvisViewer::scale {args} {
738	array set styles {
739	-color BCGYR
740	-levels 6
741	-markers ""
742	-opacity 1.0
743	}
744	array unset _limits
745	array unset _volcomponents
746	foreach dataobj $args {
747	if { ![$dataobj isvalid] } {
748	continue; # Object doesn't contain valid data.
749	}
750	foreach cname [$dataobj components] {
751	if { ![info exists _volcomponents($cname)] } {
752	lappend _componentsList $cname
753	array set styles [lindex [$dataobj components -style $cname] 0]
754	set cmap [ColorsToColormap $styles(-color)]
755	set _cname2defaultcolormap($cname) $cmap
756	set _settings($cname-colormap) $styles(-color)
757	}
758	lappend _volcomponents($cname) $dataobj-$cname
759	array unset limits
760	array set limits [$dataobj valueLimits $cname]
761	set _limits($cname) $limits(v)
762	}
763	foreach axis {x y z v} {
764	foreach { min max } [$dataobj limits $axis] break
765	if {"" != $min && "" != $max} {
766	if { ![info exists _limits($axis)] } {
767	set _limits($axis) [list $min $max]
768	} else {
769	foreach {amin amax} $_limits($axis) break
770	if {$min < $amin} {
771	set amin $min
772	}
773	if {$max > $amax} {
774	set amax $max
775	}
776	set _limits($axis) [list $amin $amax]
777	}
778	}
779	}
780	}
781	#BuildVolumeComponents
782	}
783
784	# ----------------------------------------------------------------------
785	# USAGE: download coming
786	# USAGE: download controls <downloadCommand>
787	# USAGE: download now
788	#
789	# Clients use this method to create a downloadable representation
790	# of the plot. Returns a list of the form {ext string}, where
791	# "ext" is the file extension (indicating the type of data) and
792	# "string" is the data itself.
793	# ----------------------------------------------------------------------
794	itcl::body Rappture::FlowvisViewer::download {option args} {
795	set popup .flowvisviewerdownload
796	switch $option {
797	coming {
798	if {[catch {
799	blt::winop snap $itk_component(plotarea) $_image(download)
800	}]} {
801	$_image(download) configure -width 1 -height 1
802	$_image(download) put #000000
803	}
804	}
805	controls {
806	if {![winfo exists $popup]} {
807	# if we haven't created the popup yet, do it now
808	Rappture::Balloon $popup \
809	-title "[Rappture::filexfer::label downloadWord] as..."
810	set inner [$popup component inner]
811	label $inner.summary -text "" -anchor w
812	pack $inner.summary -side top
813	set img $_image(plot)
814	set res "[image width $img]x[image height $img]"
815	radiobutton $inner.draft -text "Image (draft $res)" \
816	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
817	-value draft
818	pack $inner.draft -anchor w
819
820	set res "640x480"
821	radiobutton $inner.medium -text "Movie (standard $res)" \
822	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
823	-value $res
824	pack $inner.medium -anchor w
825
826	set res "1024x768"
827	radiobutton $inner.high -text "Movie (high quality $res)" \
828	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
829	-value $res
830	pack $inner.high -anchor w
831	button $inner.go -text [Rappture::filexfer::label download] \
832	-command [lindex $args 0]
833	pack $inner.go -pady 4
834	$inner.draft select
835	} else {
836	set inner [$popup component inner]
837	}
838	set num [llength [get]]
839	set num [expr {($num == 1) ? "1 result" : "$num results"}]
840	set word [Rappture::filexfer::label downloadWord]
841	$inner.summary configure -text "$word $num in the following format:"
842	update idletasks ;# fix initial sizes
843	update
844	return $popup
845	}
846	now {
847	if { [winfo exists $popup] } {
848	$popup deactivate
849	}
850	switch -- $_downloadPopup(format) {
851	draft {
852	# Get the image data (as base64) and decode it back to
853	# binary. This is better than writing to temporary
854	# files. When we switch to the BLT picture image it
855	# won't be necessary to decode the image data.
856	set bytes [$_image(plot) data -format "jpeg -quality 100"]
857	set bytes [Rappture::encoding::decode -as b64 $bytes]
858	return [list .jpg $bytes]
859	}
860	"640x480" {
861	return [$this GetMovie [lindex $args 0] 640 480]
862	}
863	"1024x768" {
864	return [$this GetMovie [lindex $args 0] 1024 768]
865	}
866	default {
867	error "bad download format $_downloadPopup(format)"
868	}
869	}
870	}
871	default {
872	error "bad option \"$option\": should be coming, controls, now"
873	}
874	}
875	}
876
877	# ----------------------------------------------------------------------
878	# USAGE: Connect ?<host:port>,<host:port>...?
879	#
880	# Clients use this method to establish a connection to a new
881	# server, or to reestablish a connection to the previous server.
882	# Any existing connection is automatically closed.
883	# ----------------------------------------------------------------------
884	itcl::body Rappture::FlowvisViewer::Connect {} {
885	set _hosts [GetServerList "nanovis"]
886	if { "" == $_hosts } {
887	return 0
888	}
889	set _reset 1
890	set result [VisViewer::Connect $_hosts]
891	if { $result } {
892	if { $_reportClientInfo } {
893	# Tell the server the viewer, hub, user and session.
894	# Do this immediately on connect before buffering any commands
895	global env
896
897	set info {}
898	set user "???"
899	if { [info exists env(USER)] } {
900	set user $env(USER)
901	}
902	set session "???"
903	if { [info exists env(SESSION)] } {
904	set session $env(SESSION)
905	}
906	lappend info "hub" [exec hostname]
907	lappend info "client" "flowvisviewer"
908	lappend info "user" $user
909	lappend info "session" $session
910	SendCmd "clientinfo [list $info]"
911	}
912
913	set w [winfo width $itk_component(3dview)]
914	set h [winfo height $itk_component(3dview)]
915	EventuallyResize $w $h
916	}
917	return $result
918	}
919
920	#
921	# isconnected --
922	#
923	# Indicates if we are currently connected to the visualization server.
924	#
925	itcl::body Rappture::FlowvisViewer::isconnected {} {
926	return [VisViewer::IsConnected]
927	}
928
929	#
930	# disconnect --
931	#
932	itcl::body Rappture::FlowvisViewer::disconnect {} {
933	Disconnect
934	}
935
936	#
937	# Disconnect --
938	#
939	# Clients use this method to disconnect from the current rendering
940	# server.
941	#
942	itcl::body Rappture::FlowvisViewer::Disconnect {} {
943	VisViewer::Disconnect
944
945	# disconnected -- no more data sitting on server
946	array unset _serverObjs
947	}
948
949	# ----------------------------------------------------------------------
950	# USAGE: SendTransferFuncs
951	# ----------------------------------------------------------------------
952	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
953	if { $_activeTf == "" } {
954	puts stderr "no active tf"
955	return
956	}
957	set tf $_activeTf
958	if { $_first == "" } {
959	puts stderr "no first"
960	return
961	}
962
963	# Ensure that the global opacity and thickness settings (in the slider
964	# settings widgets) are used for the active transfer-function. Update the
965	# values in the _settings varible.
966	set value $_settings($this-opacity)
967	set opacity [expr { double($value) * 0.01 }]
968	set _settings($this-$tf-opacity) $opacity
969	set value $_settings($this-thickness)
970	# Scale values between 0.00001 and 0.01000
971	set thickness [expr {double($value) * 0.0001}]
972	set _settings($this-$tf-thickness) $thickness
973
974	foreach key [array names _obj2style $_first-*] {
975	if { [info exists _obj2style($key)] } {
976	foreach tf $_obj2style($key) {
977	ComputeTransferFunc $tf
978	}
979	}
980	}
981	EventuallyResizeLegend
982	}
983
984	# ----------------------------------------------------------------------
985	# USAGE: ReceiveImage -bytes $size -type $type -token $token
986	#
987	# Invoked automatically whenever the "image" command comes in from
988	# the rendering server. Indicates that binary image data with the
989	# specified <size> will follow.
990	# ----------------------------------------------------------------------
991	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
992	array set info {
993	-token "???"
994	-bytes 0
995	-type image
996	}
997	array set info $args
998	set bytes [ReceiveBytes $info(-bytes)]
999	ReceiveEcho <<line "<read $info(-bytes) bytes"
1000	switch -- $info(-type) {
1001	"image" {
1002	$_image(plot) configure -data $bytes
1003	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1004	}
1005	"print" {
1006	set tag $this-$info(-token)
1007	set _hardcopy($tag) $bytes
1008	}
1009	"movie" {
1010	set tag $this-$info(-token)
1011	set _hardcopy($tag) $bytes
1012	}
1013	default {
1014	puts stderr "unknown download type $info(-type)"
1015	}
1016	}
1017	}
1018
1019	#
1020	# ReceiveLegend --
1021	#
1022	# The procedure is the response from the render server to each "legend"
1023	# command. The server sends back a "legend" command invoked our
1024	# the slave interpreter. The purpose is to collect data of the image
1025	# representing the legend in the canvas. In addition, the isomarkers
1026	# of the active transfer function are displayed.
1027	#
1028	# I don't know is this is the right place to display the isomarkers.
1029	# I don't know all the different paths used to draw the plot. There's
1030	# "Rebuild", "add", etc.
1031	#
1032	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1033	if { ![isconnected] } {
1034	return
1035	}
1036	#puts stderr "receive legend $tag $vmin $vmax $size"
1037	set bytes [ReceiveBytes $size]
1038	$_image(legend) configure -data $bytes
1039	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1040
1041	set c $itk_component(legend)
1042	set w [winfo width $c]
1043	set h [winfo height $c]
1044	set lx 10
1045	set ly [expr {$h - 1}]
1046	if {"" == [$c find withtag colorbar]} {
1047	$c create image 10 10 -anchor nw \
1048	-image $_image(legend) -tags colorbar
1049	$c create text $lx $ly -anchor sw \
1050	-fill $itk_option(-plotforeground) -tags "limits vmin"
1051	$c create text [expr {$w-$lx}] $ly -anchor se \
1052	-fill $itk_option(-plotforeground) -tags "limits vmax"
1053	$c lower colorbar
1054	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1055	}
1056	# Display the markers used by the active transfer function.
1057	set tf $_obj2style($tag)
1058	foreach {vmin vmax} [limits $tf] break
1059	$c itemconfigure vmin -text [format %g $vmin]
1060	$c coords vmin $lx $ly
1061
1062	$c itemconfigure vmax -text [format %g $vmax]
1063	$c coords vmax [expr {$w-$lx}] $ly
1064
1065	if { [info exists _isomarkers($tf)] } {
1066	foreach m $_isomarkers($tf) {
1067	$m visible yes
1068	}
1069	}
1070	}
1071
1072	#
1073	# ReceiveData --
1074	#
1075	# The procedure is the response from the render server to each "data
1076	# follows" command. The server sends back a "data" command invoked our
1077	# the slave interpreter. The purpose is to collect the min/max of the
1078	# volume sent to the render server. Since the client (flowvisviewer)
1079	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1080	# tell us what the limits are. Once we've received the limits to all
1081	# the data we've sent (tracked by _recvObjs) we can then determine
1082	# what the transfer functions are for these # volumes.
1083	#
1084	# Note: There is a considerable tradeoff in having the server report
1085	# back what the data limits are. It means that much of the code
1086	# having to do with transfer-functions has to wait for the data
1087	# to come back, since the isomarkers are calculated based upon
1088	# the data limits. The client code is much messier because of
1089	# this. The alternative is to parse any of the 3D formats on the
1090	# client side.
1091	#
1092	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1093	if { ![isconnected] } {
1094	return
1095	}
1096	# Arguments from server are name value pairs. Stuff them in an array.
1097	array set values $args
1098	set tag $values(tag)
1099	set parts [split $tag -]
1100	set dataobj [lindex $parts 0]
1101	set _serverObjs($tag) 0
1102	set _limits($tag) [list $values(min) $values(max)]
1103	unset _recvObjs($tag)
1104	if { [array size _recvObjs] == 0 } {
1105	updateTransferFunctions
1106	}
1107	}
1108
1109	#
1110	# Rebuild --
1111	#
1112	# Called automatically whenever something changes that affects the data
1113	# in the widget. Clears any existing data and rebuilds the widget to
1114	# display new data.
1115	#
1116	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1117	set w [winfo width $itk_component(3dview)]
1118	set h [winfo height $itk_component(3dview)]
1119	if { $w < 2 \|\| $h < 2 } {
1120	$_dispatcher event -idle !rebuild
1121	return
1122	}
1123
1124	# Turn on buffering of commands to the server. We don't want to
1125	# be preempted by a server disconnect/reconnect (which automatically
1126	# generates a new call to Rebuild).
1127	StartBufferingCommands
1128
1129	# Hide all the isomarkers. Can't remove them. Have to remember the
1130	# settings since the user may have created/deleted/moved markers.
1131
1132	foreach tf [array names _isomarkers] {
1133	foreach m $_isomarkers($tf) {
1134	$m visible no
1135	}
1136	}
1137
1138	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1139	set _width $w
1140	set _height $h
1141	$_arcball resize $w $h
1142	Resize
1143	}
1144
1145	set _first ""
1146	foreach dataobj [get] {
1147	foreach comp [$dataobj components] {
1148	set tag $dataobj-$comp
1149	set isvtk 0
1150	# FIXME: Would like to use the type method of the dataobj
1151	# but the returned value isn't well defined now
1152	if {[catch {
1153	# Send the data as one huge base64-encoded mess -- yuck!
1154	set data [$dataobj blob $comp]
1155	}]} {
1156	set data [$dataobj vtkdata $comp]
1157	set isvtk 1
1158	}
1159	set nbytes [string length $data]
1160	if { $_reportClientInfo } {
1161	set info {}
1162	lappend info "tool_id" [$dataobj hints toolId]
1163	lappend info "tool_name" [$dataobj hints toolName]
1164	lappend info "tool_version" [$dataobj hints toolRevision]
1165	lappend info "tool_title" [$dataobj hints toolTitle]
1166	lappend info "dataset_label" [$dataobj hints label]
1167	lappend info "dataset_size" $nbytes
1168	lappend info "dataset_tag" $tag
1169	SendCmd "clientinfo [list $info]"
1170	}
1171	set extents [$dataobj extents $comp]
1172	# I have a field. Is a vector field or a volume field?
1173	if { !$isvtk && $extents == 1 } {
1174	set cmd "volume data follows $nbytes $tag\n"
1175	} else {
1176	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1177	if { $cmd == "" } {
1178	puts stderr "no command"
1179	continue
1180	}
1181	}
1182	append _outbuf $cmd
1183	append _outbuf $data
1184	NameTransferFunc $dataobj $comp
1185	set _recvObjs($tag) 1
1186	}
1187	}
1188
1189	set _first [lindex [get] 0]
1190
1191	foreach axis {x y z} {
1192	# Turn off cutplanes for all volumes
1193	SendCmd "cutplane state 0 $axis"
1194	}
1195
1196	# Reset the camera and other view parameters
1197	InitSettings light2side ambient diffuse specularLevel specularExponent \
1198	transp isosurface grid axes volume outline \
1199	cutplaneVisible xcutplane ycutplane zcutplane
1200
1201	# nothing to send -- activate the proper volume
1202	if {"" != $_first} {
1203	set axis [$_first hints updir]
1204	if {"" != $axis} {
1205	SendCmd "up $axis"
1206	}
1207	set location [$_first hints camera]
1208	if { $location != "" } {
1209	array set _view $location
1210	}
1211
1212	}
1213	set _settings($this-qw) $_view(qw)
1214	set _settings($this-qx) $_view(qx)
1215	set _settings($this-qy) $_view(qy)
1216	set _settings($this-qz) $_view(qz)
1217	set _settings($this-xpan) $_view(xpan)
1218	set _settings($this-ypan) $_view(ypan)
1219	set _settings($this-zoom) $_view(zoom)
1220
1221	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1222	$_arcball quaternion $q
1223	SendCmd "camera orient $q"
1224	SendCmd "camera reset"
1225	PanCamera
1226	SendCmd "camera zoom $_view(zoom)"
1227
1228	foreach dataobj [get] {
1229	foreach comp [$dataobj components] {
1230	NameTransferFunc $dataobj $comp
1231	}
1232	}
1233
1234	# nothing to send -- activate the proper ivol
1235	set _first [lindex [get] 0]
1236	if {"" != $_first} {
1237	set axis [$_first hints updir]
1238	if {"" != $axis} {
1239	SendCmd "up $axis"
1240	}
1241	set location [$_first hints camera]
1242	if { $location != "" } {
1243	array set _view $location
1244	}
1245	set comp [lindex [$_first components] 0]
1246	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1247	}
1248
1249
1250	# sync the state of slicers
1251	set vols [CurrentVolumeIds -cutplanes]
1252	foreach axis {x y z} {
1253	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1254	SendCmd "cutplane position $pos $axis $vols"
1255	}
1256	SendCmd "volume data state $_settings($this-volume)"
1257	EventuallyResizeLegend
1258
1259	# Actually write the commands to the server socket. If it fails, we don't
1260	# care. We're finished here.
1261	blt::busy hold $itk_component(hull)
1262	StopBufferingCommands
1263	blt::busy release $itk_component(hull)
1264	set _reset 0
1265	}
1266
1267	# ----------------------------------------------------------------------
1268	# USAGE: CurrentVolumeIds ?-cutplanes?
1269	#
1270	# Returns a list of volume server IDs for the current volume being
1271	# displayed. This is normally a single ID, but it might be a list
1272	# of IDs if the current data object has multiple components.
1273	# ----------------------------------------------------------------------
1274	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1275	return ""
1276	if { $_first == "" } {
1277	return
1278	}
1279	foreach key [array names _serverObjs -] {
1280	if {[string match $_first-* $key]} {
1281	array set styles {
1282	-cutplanes 1
1283	}
1284	foreach {dataobj comp} [split $key -] break
1285	array set styles [lindex [$dataobj components -style $comp] 0]
1286	if {$what != "-cutplanes" \|\| $styles(-cutplanes)} {
1287	lappend rlist $_serverObjs($key)
1288	}
1289	}
1290	}
1291	return $rlist
1292	}
1293
1294	# ----------------------------------------------------------------------
1295	# USAGE: Zoom in
1296	# USAGE: Zoom out
1297	# USAGE: Zoom reset
1298	#
1299	# Called automatically when the user clicks on one of the zoom
1300	# controls for this widget. Changes the zoom for the current view.
1301	# ----------------------------------------------------------------------
1302	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1303	switch -- $option {
1304	"in" {
1305	set _view(zoom) [expr {$_view(zoom)*1.25}]
1306	set _settings($this-zoom) $_view(zoom)
1307	SendCmd "camera zoom $_view(zoom)"
1308	}
1309	"out" {
1310	set _view(zoom) [expr {$_view(zoom)*0.8}]
1311	set _settings($this-zoom) $_view(zoom)
1312	SendCmd "camera zoom $_view(zoom)"
1313	}
1314	"reset" {
1315	array set _view {
1316	qw 0.853553
1317	qx -0.353553
1318	qy 0.353553
1319	qz 0.146447
1320	zoom 1.0
1321	xpan 0
1322	ypan 0
1323	}
1324	if { $_first != "" } {
1325	set location [$_first hints camera]
1326	if { $location != "" } {
1327	array set _view $location
1328	}
1329	}
1330	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1331	$_arcball quaternion $q
1332	SendCmd "camera orient $q"
1333	SendCmd "camera reset"
1334	set _settings($this-qw) $_view(qw)
1335	set _settings($this-qx) $_view(qx)
1336	set _settings($this-qy) $_view(qy)
1337	set _settings($this-qz) $_view(qz)
1338	set _settings($this-xpan) $_view(xpan)
1339	set _settings($this-ypan) $_view(ypan)
1340	set _settings($this-zoom) $_view(zoom)
1341	}
1342	}
1343	}
1344
1345	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1346	set x $_view(xpan)
1347	set y $_view(ypan)
1348	SendCmd "camera pan $x $y"
1349	}
1350
1351	# ----------------------------------------------------------------------
1352	# USAGE: Rotate click <x> <y>
1353	# USAGE: Rotate drag <x> <y>
1354	# USAGE: Rotate release <x> <y>
1355	#
1356	# Called automatically when the user clicks/drags/releases in the
1357	# plot area. Moves the plot according to the user's actions.
1358	# ----------------------------------------------------------------------
1359	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1360	switch -- $option {
1361	click {
1362	$itk_component(3dview) configure -cursor fleur
1363	set _click(x) $x
1364	set _click(y) $y
1365	}
1366	drag {
1367	if {[array size _click] == 0} {
1368	Rotate click $x $y
1369	} else {
1370	set w [winfo width $itk_component(3dview)]
1371	set h [winfo height $itk_component(3dview)]
1372	if {$w <= 0 \|\| $h <= 0} {
1373	return
1374	}
1375
1376	if {[catch {
1377	# this fails sometimes for no apparent reason
1378	set dx [expr {double($x-$_click(x))/$w}]
1379	set dy [expr {double($y-$_click(y))/$h}]
1380	}]} {
1381	return
1382	}
1383
1384	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1385	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1386	set _settings($this-qw) $_view(qw)
1387	set _settings($this-qx) $_view(qx)
1388	set _settings($this-qy) $_view(qy)
1389	set _settings($this-qz) $_view(qz)
1390	SendCmd "camera orient $q"
1391
1392	set _click(x) $x
1393	set _click(y) $y
1394	}
1395	}
1396	release {
1397	Rotate drag $x $y
1398	$itk_component(3dview) configure -cursor ""
1399	catch {unset _click}
1400	}
1401	default {
1402	error "bad option \"$option\": should be click, drag, release"
1403	}
1404	}
1405	}
1406
1407	# ----------------------------------------------------------------------
1408	# USAGE: $this Pan click x y
1409	# $this Pan drag x y
1410	# $this Pan release x y
1411	#
1412	# Called automatically when the user clicks on one of the zoom
1413	# controls for this widget. Changes the zoom for the current view.
1414	# ----------------------------------------------------------------------
1415	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1416	# Experimental stuff
1417	set w [winfo width $itk_component(3dview)]
1418	set h [winfo height $itk_component(3dview)]
1419	if { $option == "set" } {
1420	set x [expr $x / double($w)]
1421	set y [expr $y / double($h)]
1422	set _view(xpan) [expr $_view(xpan) + $x]
1423	set _view(ypan) [expr $_view(ypan) + $y]
1424	PanCamera
1425	set _settings($this-xpan) $_view(xpan)
1426	set _settings($this-ypan) $_view(ypan)
1427	return
1428	}
1429	if { $option == "click" } {
1430	set _click(x) $x
1431	set _click(y) $y
1432	$itk_component(3dview) configure -cursor hand1
1433	}
1434	if { $option == "drag" \|\| $option == "release" } {
1435	set dx [expr ($_click(x) - $x)/double($w)]
1436	set dy [expr ($_click(y) - $y)/double($h)]
1437	set _click(x) $x
1438	set _click(y) $y
1439	set _view(xpan) [expr $_view(xpan) - $dx]
1440	set _view(ypan) [expr $_view(ypan) - $dy]
1441	PanCamera
1442	set _settings($this-xpan) $_view(xpan)
1443	set _settings($this-ypan) $_view(ypan)
1444	}
1445	if { $option == "release" } {
1446	$itk_component(3dview) configure -cursor ""
1447	}
1448	}
1449
1450
1451	# ----------------------------------------------------------------------
1452	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1453	#
1454	# Called when the user clicks on the record, stop or play buttons
1455	# for flow visualization.
1456	# ----------------------------------------------------------------------
1457	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1458	switch -- $option {
1459	movie {
1460	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1461	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1462	}
1463	set action [lindex $args 0]
1464	set op [lindex $args 1]
1465	if {$op == ""} { set op "on" }
1466
1467	set current [State $action]
1468	if {$op == "toggle"} {
1469	if {$current == "on"} {
1470	set op "off"
1471	} else {
1472	set op "on"
1473	}
1474	}
1475	set cmds ""
1476	switch -- $action {
1477	record {
1478	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1479	$itk_component(rewind) configure -relief sunken
1480	$itk_component(stop) configure -relief raised
1481	$itk_component(play) configure -relief raised
1482	set inner $itk_component(settingsFrame)
1483	set frames [$inner.framecnt value]
1484	set _settings(nsteps) $frames
1485	set cmds "flow capture $frames"
1486	SendCmd $cmds
1487	}
1488	}
1489	stop {
1490	if { [$itk_component(stop) cget -relief] != "sunken" } {
1491	$itk_component(rewind) configure -relief raised
1492	$itk_component(stop) configure -relief sunken
1493	$itk_component(play) configure -relief raised
1494	_pause
1495	set cmds "flow reset"
1496	SendCmd $cmds
1497	}
1498	}
1499	play {
1500	if { [$itk_component(play) cget -relief] != "sunken" } {
1501	$itk_component(rewind) configure -relief raised
1502	$itk_component(stop) configure -relief raised
1503	$itk_component(play) configure \
1504	-image [Rappture::icon flow-pause] \
1505	-relief sunken
1506	bind $itk_component(play) <ButtonPress> \
1507	[itcl::code $this _pause]
1508	flow next
1509	}
1510	}
1511	default {
1512	error "bad option \"$option\": should be one of record\|stop\|play"
1513	}
1514
1515	}
1516	}
1517	default {
1518	error "bad option \"$option\": should be movie"
1519	}
1520	}
1521	}
1522
1523	# ----------------------------------------------------------------------
1524	# USAGE: Play
1525	#
1526	# ----------------------------------------------------------------------
1527	itcl::body Rappture::FlowvisViewer::Play {} {
1528	SendCmd "flow next"
1529	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1530	$_dispatcher event -after $delay !play
1531	}
1532
1533	# ----------------------------------------------------------------------
1534	# USAGE: Pause
1535	#
1536	# Invoked when the user hits the "pause" button to stop playing the
1537	# current sequence of frames as a movie.
1538	# ----------------------------------------------------------------------
1539	itcl::body Rappture::FlowvisViewer::Pause {} {
1540	$_dispatcher cancel !play
1541
1542	# Toggle the button to "play" mode
1543	$itk_component(play) configure \
1544	-image [Rappture::icon flow-start] \
1545	-relief raised
1546	bind $itk_component(play) <ButtonPress> \
1547	[itcl::code $this Flow movie play toggle]
1548	}
1549
1550	# ----------------------------------------------------------------------
1551	# USAGE: InitSettings <what> ?<value>?
1552	#
1553	# Used internally to update rendering settings whenever parameters
1554	# change in the popup settings panel. Sends the new settings off
1555	# to the back end.
1556	# ----------------------------------------------------------------------
1557	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1558	foreach arg $args {
1559	AdjustSetting $arg
1560	}
1561	}
1562
1563	# ----------------------------------------------------------------------
1564	# USAGE: AdjustSetting <what> ?<value>?
1565	#
1566	# Used internally to update rendering settings whenever parameters
1567	# change in the popup settings panel. Sends the new settings off
1568	# to the back end.
1569	# ----------------------------------------------------------------------
1570	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1571	switch -- $what {
1572	colormap {
1573	set color [$itk_component(colormap) value]
1574	set _settings(colormap) $color
1575	#ResetColormap $color
1576	}
1577	ambient {
1578	if { $_first != "" } {
1579	set comp [lindex [$_first components] 0]
1580	set tag $_first-$comp
1581	set val $_settings($this-ambient)
1582	set val [expr {0.01*$val}]
1583	SendCmd "$tag configure -ambient $val"
1584	}
1585	}
1586	diffuse {
1587	if { $_first != "" } {
1588	set comp [lindex [$_first components] 0]
1589	set tag $_first-$comp
1590	set val $_settings($this-diffuse)
1591	set val [expr {0.01*$val}]
1592	SendCmd "$tag configure -diffuse $val"
1593	}
1594	}
1595	specularLevel {
1596	if { $_first != "" } {
1597	set comp [lindex [$_first components] 0]
1598	set tag $_first-$comp
1599	set val $_settings($this-specularLevel)
1600	set val [expr {0.01*$val}]
1601	SendCmd "$tag configure -specularLevel $val"
1602	}
1603	}
1604	specularExponent {
1605	if { $_first != "" } {
1606	set comp [lindex [$_first components] 0]
1607	set tag $_first-$comp
1608	set val $_settings($this-specularExponent)
1609	SendCmd "$tag configure -specularExp $val"
1610	}
1611	}
1612	light2side {
1613	if { $_first != "" } {
1614	set comp [lindex [$_first components] 0]
1615	set tag $_first-$comp
1616	set val $_settings($this-light2side)
1617	SendCmd "$tag configure -light2side $val"
1618	}
1619	}
1620	transp {
1621	if { $_first != "" } {
1622	set comp [lindex [$_first components] 0]
1623	set tag $_first-$comp
1624	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1625	SendCmd "$tag configure -opacity $opacity"
1626	}
1627	}
1628	opacity {
1629	if { $_first != "" && $_activeTf != "" } {
1630	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1631	set tf $_activeTf
1632	set _settings($this-$tf-opacity) $opacity
1633	updateTransferFunctions
1634	}
1635	}
1636
1637	thickness {
1638	if { $_first != "" && $_activeTf != "" } {
1639	set val $_settings($this-thickness)
1640	# Scale values between 0.00001 and 0.01000
1641	set sval [expr {0.0001*double($val)}]
1642	set tf $_activeTf
1643	set _settings($this-$tf-thickness) $sval
1644	updateTransferFunctions
1645	}
1646	}
1647	"outline" {
1648	if { $_first != "" } {
1649	set comp [lindex [$_first components] 0]
1650	set tag $_first-$comp
1651	SendCmd "$tag configure -outline $_settings($this-outline)"
1652	}
1653	}
1654	"isosurface" {
1655	if { [isconnected] } {
1656	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1657	}
1658	}
1659	"grid" {
1660	if { [isconnected] } {
1661	SendCmd "grid visible $_settings($this-grid)"
1662	}
1663	}
1664	"axes" {
1665	if { [isconnected] } {
1666	SendCmd "axis visible $_settings($this-axes)"
1667	}
1668	}
1669	"legend" {
1670	if { $_settings($this-legend) } {
1671	blt::table $itk_component(plotarea) \
1672	0,0 $itk_component(3dview) -fill both \
1673	1,0 $itk_component(legend) -fill x
1674	blt::table configure $itk_component(plotarea) r1 -resize none
1675	} else {
1676	blt::table forget $itk_component(legend)
1677	}
1678	}
1679	"volume" {
1680	if { $_first != "" } {
1681	set comp [lindex [$_first components] 0]
1682	set tag $_first-$comp
1683	SendCmd "$tag configure -volume $_settings($this-volume)"
1684	}
1685	}
1686	"cutplaneVisible" {
1687	set bool $_settings($this-$what)
1688	set datasets [CurrentVolumeIds -cutplanes]
1689	set tag [lindex $datasets 0]
1690	SendCmd "cutplane visible $bool $tag"
1691	}
1692	"xcutplane" - "ycutplane" - "zcutplane" {
1693	set axis [string range $what 0 0]
1694	set bool $_settings($this-$what)
1695	if { [isconnected] } {
1696	set vols [CurrentVolumeIds -cutplanes]
1697	SendCmd "cutplane state $bool $axis $vols"
1698	}
1699	if { $bool } {
1700	$itk_component(${axis}CutScale) configure -state normal \
1701	-troughcolor white
1702	} else {
1703	$itk_component(${axis}CutScale) configure -state disabled \
1704	-troughcolor grey82
1705	}
1706	}
1707	default {
1708	error "don't know how to fix $what"
1709	}
1710	}
1711	}
1712
1713	# ----------------------------------------------------------------------
1714	# USAGE: ResizeLegend
1715	#
1716	# Used internally to update the legend area whenever it changes size
1717	# or when the field changes. Asks the server to send a new legend
1718	# for the current field.
1719	# ----------------------------------------------------------------------
1720	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1721	set _resizeLegendPending 0
1722	set lineht [font metrics $itk_option(-font) -linespace]
1723	set w [expr {$_width-20}]
1724	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1725
1726	if { $_first == "" } {
1727	return
1728	}
1729	set comp [lindex [$_first components] 0]
1730	set tag $_first-$comp
1731	#set _activeTf [lindex $_obj2style($tag) 0]
1732	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1733	#SendCmd "legend $_activeTf $w $h"
1734	SendCmd "$tag legend $w $h"
1735	} else {
1736	# Can't do this as this will remove the items associated with the
1737	# isomarkers.
1738
1739	#$itk_component(legend) delete all
1740	}
1741	}
1742
1743	#
1744	# NameTransferFunc --
1745	#
1746	# Creates a transfer function name based on the <style> settings in the
1747	# library run.xml file. This placeholder will be used later to create
1748	# and send the actual transfer function once the data info has been sent
1749	# to us by the render server. [We won't know the volume limits until the
1750	# server parses the 3D data and sends back the limits via ReceiveData.]
1751	#
1752	# FIXME: The current way we generate transfer-function names completely
1753	# ignores the -markers option. The problem is that we are forced
1754	# to compute the name from an increasing complex set of values:
1755	# color, levels, marker, opacity. I think we're stuck doing it
1756	# now.
1757	#
1758	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj cname } {
1759	array set styles {
1760	-color BCGYR
1761	-levels 6
1762	-light 40
1763	-opacity 1.0
1764	-transp 50
1765	}
1766	array set styles [lindex [$dataobj components -style $cname] 0]
1767	set _settings($this-light) $styles(-light)
1768	set _settings($this-transp) $styles(-transp)
1769	set _settings($this-opacity) [expr $styles(-opacity) * 100]
1770	set _obj2style($dataobj-$cname) $cname
1771	lappend _style2objs($cname) $dataobj $cname
1772	return $cname
1773	}
1774
1775	#
1776	# ComputeTransferFunc --
1777	#
1778	# Computes and sends the transfer function to the render server. It's
1779	# assumed that the volume data limits are known and that the global
1780	# transfer-functions slider values have be setup. Both parts are
1781	# needed to compute the relative value (location) of the marker, and
1782	# the alpha map of the transfer function.
1783	#
1784	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1785	array set styles {
1786	-color BCGYR
1787	-levels 6
1788	-opacity 1.0
1789	-light 40
1790	-transp 50
1791	}
1792	set dataobj ""; set comp ""
1793	foreach {dataobj comp} $_style2objs($tf) break
1794	if { $dataobj == "" } {
1795	return 0
1796	}
1797	array set styles [lindex [$dataobj components -style $comp] 0]
1798
1799
1800	# We have to parse the style attributes for a volume using this
1801	# transfer-function once. This sets up the initial isomarkers for the
1802	# transfer function. The user may add/delete markers, so we have to
1803	# maintain a list of markers for each transfer-function. We use the one
1804	# of the volumes (the first in the list) using the transfer-function as a
1805	# reference.
1806	#
1807	# FIXME: The current way we generate transfer-function names completely
1808	# ignores the -markers option. The problem is that we are forced
1809	# to compute the name from an increasing complex set of values:
1810	# color, levels, marker, opacity. I think the cow's out of the
1811	# barn on this one.
1812
1813	if { ![info exists _isomarkers($tf)] } {
1814	# Have to defer creation of isomarkers until we have data limits
1815	if { [info exists styles(-markers)] &&
1816	[llength $styles(-markers)] > 0 } {
1817	ParseMarkersOption $tf $styles(-markers)
1818	} else {
1819	ParseLevelsOption $tf $styles(-levels)
1820	}
1821	}
1822	if { [info exists styles(-nonuniformcolors)] } {
1823	foreach { value color } $styles(-nonuniformcolors) {
1824	append cmap "$value [Color2RGB $color] "
1825	}
1826	} else {
1827	set cmap [ColorsToColormap $styles(-color)]
1828	}
1829	set tag $this-$tf
1830	if { ![info exists _settings($tag-opacity)] } {
1831	set _settings($tag-opacity) $styles(-opacity)
1832	}
1833	set max 1.0 ;#$_settings($tag-opacity)
1834
1835	set isovalues {}
1836	foreach m $_isomarkers($tf) {
1837	lappend isovalues [$m relval]
1838	}
1839	# Sort the isovalues
1840	set isovalues [lsort -real $isovalues]
1841
1842	if { ![info exists _settings($tag-thickness)]} {
1843	set _settings($tag-thickness) 0.005
1844	}
1845	set delta $_settings($tag-thickness)
1846
1847	set first [lindex $isovalues 0]
1848	set last [lindex $isovalues end]
1849	set wmap ""
1850	if { $first == "" \|\| $first != 0.0 } {
1851	lappend wmap 0.0 0.0
1852	}
1853	foreach x $isovalues {
1854	set x1 [expr {$x-$delta-0.00001}]
1855	set x2 [expr {$x-$delta}]
1856	set x3 [expr {$x+$delta}]
1857	set x4 [expr {$x+$delta+0.00001}]
1858	if { $x1 < 0.0 } {
1859	set x1 0.0
1860	} elseif { $x1 > 1.0 } {
1861	set x1 1.0
1862	}
1863	if { $x2 < 0.0 } {
1864	set x2 0.0
1865	} elseif { $x2 > 1.0 } {
1866	set x2 1.0
1867	}
1868	if { $x3 < 0.0 } {
1869	set x3 0.0
1870	} elseif { $x3 > 1.0 } {
1871	set x3 1.0
1872	}
1873	if { $x4 < 0.0 } {
1874	set x4 0.0
1875	} elseif { $x4 > 1.0 } {
1876	set x4 1.0
1877	}
1878	# add spikes in the middle
1879	lappend wmap $x1 0.0
1880	lappend wmap $x2 $max
1881	lappend wmap $x3 $max
1882	lappend wmap $x4 0.0
1883	}
1884	if { $last == "" \|\| $last != 1.0 } {
1885	lappend wmap 1.0 0.0
1886	}
1887	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1888	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1889	}
1890
1891	# ----------------------------------------------------------------------
1892	# CONFIGURATION OPTION: -plotbackground
1893	# ----------------------------------------------------------------------
1894	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1895	if { [isconnected] } {
1896	set color $itk_option(-plotbackground)
1897	set rgb [Color2RGB $color]
1898	SendCmd "screen bgcolor $rgb"
1899	$itk_component(legend) configure -background $color
1900	}
1901	}
1902
1903	# ----------------------------------------------------------------------
1904	# CONFIGURATION OPTION: -plotforeground
1905	# ----------------------------------------------------------------------
1906	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1907	if { [isconnected] } {
1908	set color $itk_option(-plotforeground)
1909	set rgb [Color2RGB $color]
1910	SendCmd "volume outline color $rgb"
1911	SendCmd "grid axiscolor $rgb"
1912	SendCmd "grid linecolor $rgb"
1913	$itk_component(legend) itemconfigure labels -fill $color
1914	$itk_component(legend) itemconfigure limits -fill $color
1915	}
1916	}
1917
1918	# ----------------------------------------------------------------------
1919	# CONFIGURATION OPTION: -plotoutline
1920	# ----------------------------------------------------------------------
1921	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1922	# Must check if we are connected because this routine is called from the
1923	# class body when the -plotoutline itk_option is defined. At that point
1924	# the FlowvisViewer class constructor hasn't been called, so we can't
1925	# start sending commands to visualization server.
1926	if { [isconnected] } {
1927	if {"" == $itk_option(-plotoutline)} {
1928	SendCmd "volume outline state off"
1929	} else {
1930	SendCmd "volume outline state on"
1931	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1932	}
1933	}
1934	}
1935
1936	#
1937	# The -levels option takes a single value that represents the number
1938	# of evenly distributed markers based on the current data range. Each
1939	# marker is a relative value from 0.0 to 1.0.
1940	#
1941	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1942	set c $itk_component(legend)
1943	regsub -all "," $levels " " levels
1944	if {[string is int $levels]} {
1945	for {set i 1} { $i <= $levels } {incr i} {
1946	set x [expr {double($i)/($levels+1)}]
1947	set m [Rappture::IsoMarker \#auto $c $this $tf]
1948	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1949	$m relval $x
1950	lappend _isomarkers($tf) $m
1951	}
1952	} else {
1953	foreach x $levels {
1954	set m [Rappture::IsoMarker \#auto $c $this $tf]
1955	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1956	$m relval $x
1957	lappend _isomarkers($tf) $m
1958	}
1959	}
1960	}
1961
1962	#
1963	# The -markers option takes a list of zero or more values (the values
1964	# may be separated either by spaces or commas) that have the following
1965	# format:
1966	#
1967	# N% Percent of current total data range. Converted to
1968	# to a relative value between 0.0 and 1.0.
1969	# N Absolute value of marker. If the marker is outside of
1970	# the current range, it will be displayed on the outer
1971	# edge of the legends, but it range it represents will
1972	# not be seen.
1973	#
1974	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1975	set c $itk_component(legend)
1976	regsub -all "," $markers " " markers
1977	foreach marker $markers {
1978	set n [scan $marker "%g%s" value suffix]
1979	if { $n == 2 && $suffix == "%" } {
1980	# ${n}% : Set relative value.
1981	set value [expr {$value * 0.01}]
1982	set m [Rappture::IsoMarker \#auto $c $this $tf]
1983	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1984	$m relval $value
1985	lappend _isomarkers($tf) $m
1986	} else {
1987	# ${n} : Set absolute value.
1988	set m [Rappture::IsoMarker \#auto $c $this $tf]
1989	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1990	$m absval $value
1991	lappend _isomarkers($tf) $m
1992	}
1993	}
1994	}
1995
1996	# ----------------------------------------------------------------------
1997	# USAGE: UndateTransferFuncs
1998	# ----------------------------------------------------------------------
1999	itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
2000	$_dispatcher event -after 100 !send_transfunc
2001	}
2002
2003	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2004	if { $_activeTf == "" } {
2005	error "active transfer function isn't set"
2006	}
2007	set tf $_activeTf
2008	set c $itk_component(legend)
2009	set m [Rappture::IsoMarker \#auto $c $this $tf]
2010	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
2011	set w [winfo width $c]
2012	$m relval [expr {double($x-10)/($w-20)}]
2013	lappend _isomarkers($tf) $m
2014	updateTransferFunctions
2015	return 1
2016	}
2017
2018	itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
2019	set tf [$marker transferfunc]
2020	set bool 0
2021	if { [info exists _isomarkers($tf)] } {
2022	set list {}
2023	set marker [namespace tail $marker]
2024	foreach m $_isomarkers($tf) {
2025	set sx [$m screenpos]
2026	if { $m != $marker } {
2027	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2028	$marker relval [$m relval]
2029	itcl::delete object $m
2030	bell
2031	set bool 1
2032	continue
2033	}
2034	}
2035	lappend list $m
2036	}
2037	set _isomarkers($tf) $list
2038	updateTransferFunctions
2039	}
2040	return $bool
2041	}
2042
2043	itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
2044	set tf [$marker transferfunc]
2045	if { [info exists _isomarkers($tf)] } {
2046	set marker [namespace tail $marker]
2047	foreach m $_isomarkers($tf) {
2048	set sx [$m screenpos]
2049	if { $m != $marker } {
2050	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2051	$m activate $bool
2052	}
2053	}
2054	}
2055	return ""
2056	}
2057
2058	itcl::body Rappture::FlowvisViewer::limits { cname } {
2059	set _limits(v) [list 0.0 1.0]
2060	if { ![info exists _style2objs($cname)] } {
2061	puts stderr "no style2objs for $cname cname=($cname)"
2062	return [array get _limits]
2063	}
2064	set min ""; set max ""
2065	foreach tag [GetDatasetsWithComponent $cname] {
2066	if { ![info exists _serverObjs($tag)] } {
2067	puts stderr "$tag not in serverObjs?"
2068	continue
2069	}
2070	if { ![info exists _limits($tag)] } {
2071	puts stderr "$tag no min?"
2072	continue
2073	}
2074	foreach {vmin vmax} $_limits($tag) break
2075	if { $min == "" \|\| $min > $vmin } {
2076	set min $vmin
2077	}
2078	if { $max == "" \|\| $max < $vmax } {
2079	set max $vmax
2080	}
2081	}
2082	if { $min != "" && $max != "" } {
2083	set _limits(v) [list $min $max]
2084	set _limits($cname) [list $min $max]
2085	}
2086	return $_limits($cname)
2087	}
2088
2089	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2090	foreach { key value } {
2091	grid 0
2092	axes 0
2093	outline 1
2094	volume 1
2095	legend 1
2096	particles 1
2097	lic 1
2098	} {
2099	set _settings($this-$key) $value
2100	}
2101
2102	set fg [option get $itk_component(hull) font Font]
2103	#set bfg [option get $itk_component(hull) boldFont Font]
2104
2105	set inner [$itk_component(main) insert end \
2106	-title "View Settings" \
2107	-icon [Rappture::icon wrench]]
2108	$inner configure -borderwidth 4
2109
2110	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2111	checkbutton $inner.isosurface \
2112	-text "Isosurface shading" \
2113	-variable [itcl::scope _settings($this-isosurface)] \
2114	-command [itcl::code $this AdjustSetting isosurface] \
2115	-font "Arial 9"
2116
2117	checkbutton $inner.axes \
2118	-text "Axes" \
2119	-variable [itcl::scope _settings($this-axes)] \
2120	-command [itcl::code $this AdjustSetting axes] \
2121	-font "Arial 9"
2122
2123	checkbutton $inner.grid \
2124	-text "Grid" \
2125	-variable [itcl::scope _settings($this-grid)] \
2126	-command [itcl::code $this AdjustSetting grid] \
2127	-font "Arial 9"
2128
2129	checkbutton $inner.outline \
2130	-text "Outline" \
2131	-variable [itcl::scope _settings($this-outline)] \
2132	-command [itcl::code $this AdjustSetting outline] \
2133	-font "Arial 9"
2134
2135	checkbutton $inner.legend \
2136	-text "Legend" \
2137	-variable [itcl::scope _settings($this-legend)] \
2138	-command [itcl::code $this AdjustSetting legend] \
2139	-font "Arial 9"
2140
2141	checkbutton $inner.volume \
2142	-text "Volume" \
2143	-variable [itcl::scope _settings($this-volume)] \
2144	-command [itcl::code $this AdjustSetting volume] \
2145	-font "Arial 9"
2146
2147	checkbutton $inner.particles \
2148	-text "Particles" \
2149	-variable [itcl::scope _settings($this-particles)] \
2150	-command [itcl::code $this AdjustSetting particles] \
2151	-font "Arial 9"
2152
2153	checkbutton $inner.lic \
2154	-text "Lic" \
2155	-variable [itcl::scope _settings($this-lic)] \
2156	-command [itcl::code $this AdjustSetting lic] \
2157	-font "Arial 9"
2158
2159	frame $inner.frame
2160
2161	blt::table $inner \
2162	0,0 $inner.axes -cspan 2 -anchor w \
2163	1,0 $inner.grid -cspan 2 -anchor w \
2164	2,0 $inner.outline -cspan 2 -anchor w \
2165	3,0 $inner.volume -cspan 2 -anchor w \
2166	4,0 $inner.legend -cspan 2 -anchor w
2167
2168	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2169
2170	blt::table configure $inner r* -resize none
2171	blt::table configure $inner r5 -resize expand
2172	}
2173
2174	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2175	set inner [$itk_component(main) insert end \
2176	-title "Volume Settings" \
2177	-icon [Rappture::icon volume-on]]
2178	$inner configure -borderwidth 4
2179
2180	set fg [option get $itk_component(hull) font Font]
2181	#set bfg [option get $itk_component(hull) boldFont Font]
2182
2183	checkbutton $inner.vol -text "Show volume" -font $fg \
2184	-text "Volume" \
2185	-variable [itcl::scope _settings($this-volume)] \
2186	-command [itcl::code $this AdjustSetting volume] \
2187	-font "Arial 9"
2188
2189	label $inner.shading -text "Shading:" -font $fg
2190
2191	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2192	-variable [itcl::scope _settings($this-light2side)] \
2193	-command [itcl::code $this AdjustSetting light2side]
2194
2195	label $inner.ambient_l -text "Ambient" -font $fg
2196	::scale $inner.ambient -from 0 -to 100 -orient horizontal \
2197	-variable [itcl::scope _settings($this-ambient)] \
2198	-width 10 \
2199	-showvalue off -command [itcl::code $this AdjustSetting ambient]
2200
2201	label $inner.diffuse_l -text "Diffuse" -font $fg
2202	::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
2203	-variable [itcl::scope _settings($this-diffuse)] \
2204	-width 10 \
2205	-showvalue off -command [itcl::code $this AdjustSetting diffuse]
2206
2207	label $inner.specularLevel_l -text "Specular" -font $fg
2208	::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
2209	-variable [itcl::scope _settings($this-specularLevel)] \
2210	-width 10 \
2211	-showvalue off -command [itcl::code $this AdjustSetting specularLevel]
2212
2213	label $inner.specularExponent_l -text "Shininess" -font $fg
2214	::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
2215	-variable [itcl::scope _settings($this-specularExponent)] \
2216	-width 10 \
2217	-showvalue off -command [itcl::code $this AdjustSetting specularExponent]
2218
2219	label $inner.clear -text "Clear" -font $fg
2220	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2221	-variable [itcl::scope _settings($this-transp)] \
2222	-width 10 \
2223	-showvalue off -command [itcl::code $this AdjustSetting transp]
2224	label $inner.opaque -text "Opaque" -font $fg
2225
2226	label $inner.thin -text "Thin" -font $fg
2227	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2228	-variable [itcl::scope _settings($this-thickness)] \
2229	-width 10 \
2230	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2231	label $inner.thick -text "Thick" -font $fg
2232
2233	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2234	itk_component add colormap {
2235	Rappture::Combobox $inner.colormap -width 10 -editable no
2236	}
2237	$inner.colormap choices insert end [GetColormapList -includeNone]
2238	$itk_component(colormap) value "BCGYR"
2239	bind $inner.colormap <<Value>> \
2240	[itcl::code $this AdjustSetting colormap]
2241
2242	blt::table $inner \
2243	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2244	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2245	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2246	3,0 $inner.ambient_l -anchor e -pady 2 \
2247	3,1 $inner.ambient -cspan 3 -pady 2 -fill x \
2248	4,0 $inner.diffuse_l -anchor e -pady 2 \
2249	4,1 $inner.diffuse -cspan 3 -pady 2 -fill x \
2250	5,0 $inner.specularLevel_l -anchor e -pady 2 \
2251	5,1 $inner.specularLevel -cspan 3 -pady 2 -fill x \
2252	6,0 $inner.specularExponent_l -anchor e -pady 2 \
2253	6,1 $inner.specularExponent -cspan 3 -pady 2 -fill x \
2254	7,0 $inner.clear -anchor e -pady 2 \
2255	7,1 $inner.transp -cspan 2 -pady 2 -fill x \
2256	7,3 $inner.opaque -anchor w -pady 2 \
2257	8,0 $inner.thin -anchor e -pady 2 \
2258	8,1 $inner.thickness -cspan 2 -pady 2 -fill x \
2259	8,3 $inner.thick -anchor w -pady 2
2260
2261	blt::table configure $inner c0 c1 c3 r* -resize none
2262	blt::table configure $inner r9 -resize expand
2263	}
2264
2265	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2266	set inner [$itk_component(main) insert end \
2267	-title "Cutplane Settings" \
2268	-icon [Rappture::icon cutbutton]]
2269	$inner configure -borderwidth 4
2270
2271	# X-value slicer...
2272	itk_component add xCutButton {
2273	Rappture::PushButton $inner.xbutton \
2274	-onimage [Rappture::icon x-cutplane] \
2275	-offimage [Rappture::icon x-cutplane] \
2276	-command [itcl::code $this AdjustSetting xcutplane] \
2277	-variable [itcl::scope _settings($this-xcutplane)]
2278	}
2279	Rappture::Tooltip::for $itk_component(xCutButton) \
2280	"Toggle the X cut plane on/off"
2281	$itk_component(xCutButton) select
2282
2283	itk_component add xCutScale {
2284	::scale $inner.xval -from 100 -to 0 \
2285	-width 10 -orient vertical -showvalue off \
2286	-borderwidth 1 -highlightthickness 0 \
2287	-command [itcl::code $this Slice move x] \
2288	-variable [itcl::scope _settings($this-xcutposition)]
2289	} {
2290	usual
2291	ignore -borderwidth -highlightthickness
2292	}
2293	# Set the default cutplane value before disabling the scale.
2294	$itk_component(xCutScale) set 50
2295	$itk_component(xCutScale) configure -state disabled
2296	Rappture::Tooltip::for $itk_component(xCutScale) \
2297	"@[itcl::code $this SlicerTip x]"
2298
2299	# Y-value slicer...
2300	itk_component add yCutButton {
2301	Rappture::PushButton $inner.ybutton \
2302	-onimage [Rappture::icon y-cutplane] \
2303	-offimage [Rappture::icon y-cutplane] \
2304	-command [itcl::code $this AdjustSetting ycutplane] \
2305	-variable [itcl::scope _settings($this-ycutplane)]
2306	}
2307	Rappture::Tooltip::for $itk_component(yCutButton) \
2308	"Toggle the Y cut plane on/off"
2309	$itk_component(yCutButton) select
2310
2311	itk_component add yCutScale {
2312	::scale $inner.yval -from 100 -to 0 \
2313	-width 10 -orient vertical -showvalue off \
2314	-borderwidth 1 -highlightthickness 0 \
2315	-command [itcl::code $this Slice move y] \
2316	-variable [itcl::scope _settings($this-ycutposition)]
2317	} {
2318	usual
2319	ignore -borderwidth -highlightthickness
2320	}
2321	Rappture::Tooltip::for $itk_component(yCutScale) \
2322	"@[itcl::code $this SlicerTip y]"
2323	# Set the default cutplane value before disabling the scale.
2324	$itk_component(yCutScale) set 50
2325	$itk_component(yCutScale) configure -state disabled
2326
2327	# Z-value slicer...
2328	itk_component add zCutButton {
2329	Rappture::PushButton $inner.zbutton \
2330	-onimage [Rappture::icon z-cutplane] \
2331	-offimage [Rappture::icon z-cutplane] \
2332	-command [itcl::code $this AdjustSetting zcutplane] \
2333	-variable [itcl::scope _settings($this-zcutplane)]
2334	}
2335	Rappture::Tooltip::for $itk_component(zCutButton) \
2336	"Toggle the Z cut plane on/off"
2337	$itk_component(zCutButton) select
2338
2339	itk_component add zCutScale {
2340	::scale $inner.zval -from 100 -to 0 \
2341	-width 10 -orient vertical -showvalue off \
2342	-borderwidth 1 -highlightthickness 0 \
2343	-command [itcl::code $this Slice move z] \
2344	-variable [itcl::scope _settings($this-zcutposition)]
2345	} {
2346	usual
2347	ignore -borderwidth -highlightthickness
2348	}
2349	$itk_component(zCutScale) set 50
2350	$itk_component(zCutScale) configure -state disabled
2351	#$itk_component(zCutScale) configure -state disabled
2352	Rappture::Tooltip::for $itk_component(zCutScale) \
2353	"@[itcl::code $this SlicerTip z]"
2354
2355	blt::table $inner \
2356	1,1 $itk_component(xCutButton) \
2357	1,2 $itk_component(yCutButton) \
2358	1,3 $itk_component(zCutButton) \
2359	0,1 $itk_component(xCutScale) \
2360	0,2 $itk_component(yCutScale) \
2361	0,3 $itk_component(zCutScale) \
2362
2363	blt::table configure $inner r0 r1 c* -resize none
2364	blt::table configure $inner r2 c4 -resize expand
2365	blt::table configure $inner c0 -width 2
2366	blt::table configure $inner c1 c2 c3 -padx 2
2367	}
2368
2369	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2370	set inner [$itk_component(main) insert end \
2371	-title "Camera Settings" \
2372	-icon [Rappture::icon camera]]
2373	$inner configure -borderwidth 4
2374
2375	label $inner.view_l -text "view" -font "Arial 9"
2376	set f [frame $inner.view]
2377	foreach side { front back left right top bottom } {
2378	button $f.$side -image [Rappture::icon view$side] \
2379	-command [itcl::code $this SetOrientation $side]
2380	Rappture::Tooltip::for $f.$side "Change the view to $side"
2381	pack $f.$side -side left
2382	}
2383
2384	blt::table $inner \
2385	0,0 $inner.view_l -anchor e -pady 2 \
2386	0,1 $inner.view -anchor w -pady 2
2387
2388	set row 1
2389	set labels { qw qx qy qz xpan ypan zoom }
2390	foreach tag $labels {
2391	label $inner.${tag}label -text $tag -font "Arial 9"
2392	entry $inner.${tag} -font "Arial 9" -bg white \
2393	-textvariable [itcl::scope _settings($this-$tag)]
2394	bind $inner.${tag} <KeyPress-Return> \
2395	[itcl::code $this camera set ${tag}]
2396	blt::table $inner \
2397	$row,0 $inner.${tag}label -anchor e -pady 2 \
2398	$row,1 $inner.${tag} -anchor w -pady 2
2399	blt::table configure $inner r$row -resize none
2400	incr row
2401	}
2402
2403	blt::table configure $inner c* r* -resize none
2404	blt::table configure $inner c2 -resize expand
2405	blt::table configure $inner r$row -resize expand
2406	}
2407
2408	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2409	set flowobj ""
2410	foreach key [array names _obj2flow] {
2411	set flowobj $_obj2flow($key)
2412	break
2413	}
2414	if { $flowobj == "" } {
2415	return
2416	}
2417	if { [winfo exists $w.frame] } {
2418	destroy $w.frame
2419	}
2420	set inner [frame $w.frame]
2421	blt::table $w \
2422	5,0 $inner -fill both -cspan 2 -anchor nw
2423	array set hints [$flowobj hints]
2424	checkbutton $inner.showstreams -text "Streams Plane" \
2425	-variable [itcl::scope _settings($this-streams)] \
2426	-command [itcl::code $this streams $key $hints(name)] \
2427	-font "Arial 9"
2428	Rappture::Tooltip::for $inner.showstreams $hints(description)
2429
2430	checkbutton $inner.showarrows -text "Arrows" \
2431	-variable [itcl::scope _settings($this-arrows)] \
2432	-command [itcl::code $this arrows $key $hints(name)] \
2433	-font "Arial 9"
2434
2435	label $inner.particles -text "Particles" -font "Arial 9 bold"
2436	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2437
2438	blt::table $inner \
2439	1,0 $inner.showstreams -anchor w \
2440	2,0 $inner.showarrows -anchor w
2441	blt::table configure $inner c0 c1 -resize none
2442	blt::table configure $inner c2 -resize expand
2443
2444	set row 3
2445	set particles [$flowobj particles]
2446	if { [llength $particles] > 0 } {
2447	blt::table $inner $row,0 $inner.particles -anchor w
2448	incr row
2449	}
2450	foreach part $particles {
2451	array unset info
2452	array set info $part
2453	set name $info(name)
2454	if { ![info exists _settings($this-particles-$name)] } {
2455	set _settings($this-particles-$name) $info(hide)
2456	}
2457	checkbutton $inner.part$row -text $info(label) \
2458	-variable [itcl::scope _settings($this-particles-$name)] \
2459	-onvalue 0 -offvalue 1 \
2460	-command [itcl::code $this particles $key $name] \
2461	-font "Arial 9"
2462	Rappture::Tooltip::for $inner.part$row $info(description)
2463	blt::table $inner $row,0 $inner.part$row -anchor w
2464	if { !$_settings($this-particles-$name) } {
2465	$inner.part$row select
2466	}
2467	incr row
2468	}
2469	set boxes [$flowobj boxes]
2470	if { [llength $boxes] > 0 } {
2471	blt::table $inner $row,0 $inner.boxes -anchor w
2472	incr row
2473	}
2474	foreach box $boxes {
2475	array unset info
2476	array set info $box
2477	set name $info(name)
2478	if { ![info exists _settings($this-box-$name)] } {
2479	set _settings($this-box-$name) $info(hide)
2480	}
2481	checkbutton $inner.box$row -text $info(label) \
2482	-variable [itcl::scope _settings($this-box-$name)] \
2483	-onvalue 0 -offvalue 1 \
2484	-command [itcl::code $this box $key $name] \
2485	-font "Arial 9"
2486	Rappture::Tooltip::for $inner.box$row $info(description)
2487	blt::table $inner $row,0 $inner.box$row -anchor w
2488	if { !$_settings($this-box-$name) } {
2489	$inner.box$row select
2490	}
2491	incr row
2492	}
2493	blt::table configure $inner r* -resize none
2494	blt::table configure $inner r$row -resize expand
2495	blt::table configure $inner c3 -resize expand
2496	event generate [winfo parent [winfo parent $w]] <Configure>
2497	}
2498
2499	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2500	set bool $_settings($this-particles-$name)
2501	SendCmd "$tag particles configure {$name} -hide $bool"
2502	}
2503
2504	itcl::body Rappture::FlowvisViewer::box { tag name } {
2505	set bool $_settings($this-box-$name)
2506	SendCmd "$tag box configure {$name} -hide $bool"
2507	}
2508
2509	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2510	set bool $_settings($this-streams)
2511	SendCmd "$tag configure -slice $bool"
2512	}
2513
2514	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2515	set bool $_settings($this-arrows)
2516	SendCmd "$tag configure -arrows $bool"
2517	}
2518
2519	# ----------------------------------------------------------------------
2520	# USAGE: Slice move x\|y\|z <newval>
2521	#
2522	# Called automatically when the user drags the slider to move the
2523	# cut plane that slices 3D data. Gets the current value from the
2524	# slider and moves the cut plane to the appropriate point in the
2525	# data set.
2526	# ----------------------------------------------------------------------
2527	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2528	switch -- $option {
2529	move {
2530	if {[llength $args] != 2} {
2531	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2532	}
2533	set axis [lindex $args 0]
2534	set newval [lindex $args 1]
2535	set newpos [expr {0.01*$newval}]
2536
2537	# show the current value in the readout
2538
2539	set ids [CurrentVolumeIds -cutplanes]
2540	SendCmd "cutplane position $newpos $axis $ids"
2541	}
2542	default {
2543	error "bad option \"$option\": should be axis, move, or volume"
2544	}
2545	}
2546	}
2547
2548	# ----------------------------------------------------------------------
2549	# USAGE: SlicerTip <axis>
2550	#
2551	# Used internally to generate a tooltip for the x/y/z slicer controls.
2552	# Returns a message that includes the current slicer value.
2553	# ----------------------------------------------------------------------
2554	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2555	set val [$itk_component(${axis}CutScale) get]
2556	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2557	}
2558
2559	itcl::body Rappture::FlowvisViewer::Resize {} {
2560	$_arcball resize $_width $_height
2561	SendCmd "screen size $_width $_height"
2562	set _resizePending 0
2563	}
2564
2565	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2566	set _width $w
2567	set _height $h
2568	$_arcball resize $w $h
2569	if { !$_resizePending } {
2570	$_dispatcher event -after 200 !resize
2571	set _resizePending 1
2572	}
2573	}
2574
2575	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2576	if { !$_resizeLegendPending } {
2577	$_dispatcher event -after 100 !legend
2578	set _resizeLegendPending 1
2579	}
2580	}
2581
2582	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2583	set _flow(goto) $nSteps
2584	if { !$_gotoPending } {
2585	$_dispatcher event -after 1000 !goto
2586	set _gotoPending 1
2587	}
2588	}
2589
2590	# camera --
2591	itcl::body Rappture::FlowvisViewer::camera {option args} {
2592	switch -- $option {
2593	"show" {
2594	puts [array get _view]
2595	}
2596	"set" {
2597	set who [lindex $args 0]
2598	set x $_settings($this-$who)
2599	set code [catch { string is double $x } result]
2600	if { $code != 0 \|\| !$result } {
2601	set _settings($this-$who) $_view($who)
2602	return
2603	}
2604	switch -- $who {
2605	"xpan" - "ypan" {
2606	set _view($who) $_settings($this-$who)
2607	PanCamera
2608	}
2609	"qx" - "qy" - "qz" - "qw" {
2610	set _view($who) $_settings($this-$who)
2611	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2612	$_arcball quaternion $q
2613	SendCmd "camera orient $q"
2614	}
2615	"zoom" {
2616	set _view($who) $_settings($this-$who)
2617	SendCmd "camera zoom $_view(zoom)"
2618	}
2619	}
2620	}
2621	}
2622	}
2623
2624	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2625	set tag "$dataobj-$comp"
2626	if { ![info exists _obj2flow($tag)] } {
2627	append cmd "flow add $tag\n"
2628	append cmd "$tag data follows $nbytes $extents\n"
2629	return $cmd
2630	}
2631	set flowobj $_obj2flow($tag)
2632	if { $flowobj == "" } {
2633	puts stderr "no flowobj"
2634	return ""
2635	}
2636	set cmd {}
2637	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2638	array set info [$flowobj hints]
2639	set _settings($this-volume) $info(volume)
2640	set _settings($this-outline) $info(outline)
2641	set _settings($this-arrows) $info(arrows)
2642	set _settings($this-duration) $info(duration)
2643	$itk_component(speed) value $info(speed)
2644	append cmd "flow add $tag"
2645	append cmd " -position $info(position)"
2646	append cmd " -axis $info(axis)"
2647	append cmd " -volume $info(volume)"
2648	append cmd " -outline $info(outline)"
2649	append cmd " -slice $info(streams)"
2650	append cmd " -arrows $info(arrows)\n"
2651	foreach part [$flowobj particles] {
2652	array unset info
2653	array set info $part
2654	set color [Color2RGB $info(color)]
2655	append cmd "$tag particles add $info(name)"
2656	append cmd " -position $info(position)"
2657	append cmd " -hide $info(hide)"
2658	append cmd " -axis $info(axis)"
2659	append cmd " -color {$color}"
2660	append cmd " -size $info(size)\n"
2661	}
2662	foreach box [$flowobj boxes] {
2663	array unset info
2664	set info(corner1) ""
2665	set info(corner2) ""
2666	array set info $box
2667	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2668	continue
2669	}
2670	set color [Color2RGB $info(color)]
2671	append cmd "$tag box add $info(name)"
2672	append cmd " -color {$color}"
2673	append cmd " -hide $info(hide)"
2674	append cmd " -linewidth $info(linewidth) "
2675	append cmd " -corner1 {$info(corner1)} "
2676	append cmd " -corner2 {$info(corner2)}\n"
2677	}
2678	append cmd "$tag data follows $nbytes $extents\n"
2679	return $cmd
2680	}
2681
2682
2683	#
2684	# flow --
2685	#
2686	# Called when the user clicks on the stop or play buttons
2687	# for flow visualization.
2688	#
2689	# $this flow play
2690	# $this flow stop
2691	# $this flow toggle
2692	# $this flow reset
2693	# $this flow pause
2694	# $this flow next
2695	#
2696	itcl::body Rappture::FlowvisViewer::flow { args } {
2697	set option [lindex $args 0]
2698	switch -- $option {
2699	"goto2" {
2700	puts stderr "actually sending \"flow goto $_flow(goto)\""
2701	SendCmd "flow goto $_flow(goto)"
2702	set _gotoPending 0
2703	}
2704	"goto" {
2705	puts stderr "flow goto to $_settings($this-currenttime)"
2706	# Figure out how many steps to the current time based upon
2707	# the speed and duration.
2708	set current $_settings($this-currenttime)
2709	set speed [$itk_component(speed) value]
2710	set time [str2millisecs $_settings($this-duration)]
2711	$itk_component(dial) configure -max $time
2712	set delay [expr int(round(500.0/$speed))]
2713	set timePerStep [expr {double($time) / $delay}]
2714	set nSteps [expr {int(ceil($current/$timePerStep))}]
2715	EventuallyGoto $nSteps
2716	}
2717	"speed" {
2718	set speed [$itk_component(speed) value]
2719	set _flow(delay) [expr int(round(500.0/$speed))]
2720	}
2721	"duration" {
2722	set max [str2millisecs $_settings($this-duration)]
2723	if { $max < 0 } {
2724	bell
2725	return
2726	}
2727	set _flow(duration) $max
2728	set _settings($this-duration) [millisecs2str $max]
2729	$itk_component(dial) configure -max $max
2730	}
2731	"off" {
2732	set _flow(state) 0
2733	$_dispatcher cancel !play
2734	$itk_component(play) deselect
2735	}
2736	"on" {
2737	flow speed
2738	flow duration
2739	set _flow(state) 1
2740	set _settings($this-currenttime) 0
2741	$itk_component(play) select
2742	}
2743	"stop" {
2744	if { $_flow(state) } {
2745	flow off
2746	flow reset
2747	}
2748	}
2749	"pause" {
2750	if { $_flow(state) } {
2751	flow off
2752	}
2753	}
2754	"play" {
2755	# If the flow is currently off, then restart it.
2756	if { !$_flow(state) } {
2757	flow on
2758	# If we're at the end of the flow, reset the flow.
2759	set _settings($this-currenttime) \
2760	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2761	if { $_settings($this-currenttime) >= $_flow(duration) } {
2762	set _settings($this-step) 1
2763	SendCmd "flow reset"
2764	}
2765	flow next
2766	}
2767	}
2768	"toggle" {
2769	if { $_settings($this-play) } {
2770	flow play
2771	} else {
2772	flow pause
2773	}
2774	}
2775	"reset" {
2776	set _settings($this-currenttime) 0
2777	SendCmd "flow reset"
2778	}
2779	"next" {
2780	if { ![winfo viewable $itk_component(3dview)] } {
2781	flow stop
2782	return
2783	}
2784	set _settings($this-currenttime) \
2785	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2786	if { $_settings($this-currenttime) >= $_flow(duration) } {
2787	if { !$_settings($this-loop) } {
2788	flow off
2789	return
2790	}
2791	flow reset
2792	} else {
2793	SendCmd "flow next"
2794	}
2795	$_dispatcher event -after $_flow(delay) !play
2796	}
2797	default {
2798	error "bad option \"$option\": should be play, stop, toggle, or reset."
2799	}
2800	}
2801	}
2802
2803	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2804	switch -- $option {
2805	"start" {
2806	$_dispatcher dispatch $this !waiticon \
2807	"[itcl::code $this WaitIcon "next" $widget] ; list"
2808	set _icon 0
2809	$widget configure -image [Rappture::icon bigroller${_icon}]
2810	$_dispatcher event -after 100 !waiticon
2811	}
2812	"next" {
2813	incr _icon
2814	if { $_icon >= 8 } {
2815	set _icon 0
2816	}
2817	$widget configure -image [Rappture::icon bigroller${_icon}]
2818	$_dispatcher event -after 100 !waiticon
2819	}
2820	"stop" {
2821	$_dispatcher cancel !waiticon
2822	}
2823	}
2824	}
2825
2826	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2827	set token "print[incr _nextToken]"
2828	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2829	set $var ""
2830
2831	# Setup an automatic timeout procedure.
2832	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2833
2834	set popup .flowvisviewerprint
2835	if {![winfo exists $popup]} {
2836	Rappture::Balloon $popup -title "Generating file..."
2837	set inner [$popup component inner]
2838	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2839	label $inner.please -text "This may take a minute." -font "Arial 10"
2840	label $inner.icon -image [Rappture::icon bigroller0]
2841	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2842	-command [list set $var ""]
2843	blt::table $inner \
2844	0,0 $inner.title -cspan 2 \
2845	1,0 $inner.please -anchor w \
2846	1,1 $inner.icon -anchor e \
2847	2,0 $inner.cancel -cspan 2
2848	blt::table configure $inner r0 -pady 4
2849	blt::table configure $inner r2 -pady 4
2850	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2851	} else {
2852	set inner [$popup component inner]
2853	}
2854
2855	$_dispatcher event -after 60000 !pngtimeout
2856	WaitIcon start $inner.icon
2857	grab set $inner
2858	focus $inner.cancel
2859
2860	SendCmd "print $token $width $height"
2861
2862	$popup activate $widget below
2863	update idletasks
2864	update
2865	# We wait here for either
2866	# 1) the png to be delivered or
2867	# 2) timeout or
2868	# 3) user cancels the operation.
2869	tkwait variable $var
2870
2871	# Clean up.
2872	$_dispatcher cancel !pngtimeout
2873	WaitIcon stop $inner.icon
2874	grab release $inner
2875	$popup deactivate
2876	update
2877
2878	if { $_hardcopy($this-$token) != "" } {
2879	return [list .png $_hardcopy($this-$token)]
2880	}
2881	return ""
2882	}
2883
2884	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2885	set token "movie[incr _nextToken]"
2886	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2887	set $var ""
2888
2889	# Setup an automatic timeout procedure.
2890	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2891	set popup .flowvisviewermovie
2892	if {![winfo exists $popup]} {
2893	Rappture::Balloon $popup -title "Generating movie..."
2894	set inner [$popup component inner]
2895	label $inner.title -text "Generating movie for download" \
2896	-font "Arial 10 bold"
2897	label $inner.please -text "This may take a few minutes." \
2898	-font "Arial 10"
2899	label $inner.icon -image [Rappture::icon bigroller0]
2900	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2901	-command [list set $var ""]
2902	blt::table $inner \
2903	0,0 $inner.title -cspan 2 \
2904	1,0 $inner.please -anchor w \
2905	1,1 $inner.icon -anchor e \
2906	2,0 $inner.cancel -cspan 2
2907	blt::table configure $inner r0 -pady 4
2908	blt::table configure $inner r2 -pady 4
2909	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2910	} else {
2911	set inner [$popup component inner]
2912	}
2913	update
2914	# Timeout is set to 10 minutes.
2915	$_dispatcher event -after 600000 !movietimeout
2916	WaitIcon start $inner.icon
2917	grab set $inner
2918	focus $inner.cancel
2919
2920	flow duration
2921	flow speed
2922	set nframes [expr round($_flow(duration) / $_flow(delay))]
2923	set framerate [expr 1000.0 / $_flow(delay)]
2924
2925	# These are specific to MPEG1 video generation
2926	set framerate 25.0
2927	set bitrate 6.0e+6
2928
2929	set start [clock seconds]
2930	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2931
2932	$popup activate $widget below
2933	update idletasks
2934	update
2935	# We wait here until
2936	# 1. the movie is delivered or
2937	# 2. we've timed out or
2938	# 3. the user has canceled the operation.b
2939	tkwait variable $var
2940
2941	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2942
2943	# Clean up.
2944	$_dispatcher cancel !movietimeout
2945	WaitIcon stop $inner.icon
2946	grab release $inner
2947	$popup deactivate
2948	destroy $popup
2949	update
2950
2951	# This will both cancel the movie generation (if it hasn't already
2952	# completed) and reset the flow.
2953	SendCmd "flow reset"
2954	if { $_hardcopy($this-$token) != "" } {
2955	return [list .mpg $_hardcopy($this-$token)]
2956	}
2957	return ""
2958	}
2959
2960	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2961	set parts [split $value :]
2962	set secs 0
2963	set mins 0
2964	if { [llength $parts] == 1 } {
2965	scan [lindex $parts 0] "%d" secs
2966	} else {
2967	scan [lindex $parts 1] "%d" secs
2968	scan [lindex $parts 0] "%d" mins
2969	}
2970	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2971	if { $ms > 600000.0 } {
2972	set ms 600000.0
2973	}
2974	if { $ms == 0.0 } {
2975	set ms 60000.0
2976	}
2977	return $ms
2978	}
2979
2980	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2981	set min [expr floor($value / 60000.0)]
2982	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2983	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2984	}
2985
2986	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2987	array set positions {
2988	front "1 0 0 0"
2989	back "0 0 1 0"
2990	left "0.707107 0 -0.707107 0"
2991	right "0.707107 0 0.707107 0"
2992	top "0.707107 -0.707107 0 0"
2993	bottom "0.707107 0.707107 0 0"
2994	}
2995	foreach name { qw qx qy qz } value $positions($side) {
2996	set _view($name) $value
2997	}
2998	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2999	$_arcball quaternion $q
3000	SendCmd "camera orient $q"
3001	SendCmd "camera reset"
3002	set _view(xpan) 0.0
3003	set _view(ypan) 0.0
3004	set _view(zoom) 1.0
3005	set _settings($this-xpan) $_view(xpan)
3006	set _settings($this-ypan) $_view(ypan)
3007	set _settings($this-zoom) $_view(zoom)
3008	}
3009
3010	# Reset global settings from dataset's settings.
3011	itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
3012	$itk_component(volcomponents) choices delete 0 end
3013	foreach name $_componentsList {
3014	$itk_component(volcomponents) choices insert end $name $name
3015	}
3016	set _current [lindex $_componentsList 0]
3017	$itk_component(volcomponents) value $_current
3018	}
3019
3020	# Reset global settings from dataset's settings.
3021	itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
3022	if { ![info exists _volcomponents($cname)] } {
3023	return ""
3024	}
3025	set list ""
3026	foreach tag $_volcomponents($cname) {
3027	if { ![info exists _serverObjs($tag)] } {
3028	continue
3029	}
3030	lappend list $tag
3031	}
3032	return $list
3033	}

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