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source: trunk/gui/scripts/flowvisviewer.tcl @ 4669

Last change on this file since 4669 was 4669, checked in by ldelgass, 10 years ago
Add build info to clientinfo command
File size: 104.9 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 $env(SESSION)
905	}
906	lappend info "version" "$Rappture::version"
907	lappend info "build" "$Rappture::build"
908	lappend info "svnurl" "$Rappture::svnurl"
909	lappend info "installdir" "$Rappture::installdir"
910	lappend info "hub" [exec hostname]
911	lappend info "client" "flowvisviewer"
912	lappend info "user" $user
913	lappend info "session" $session
914	SendCmd "clientinfo [list $info]"
915	}
916
917	set w [winfo width $itk_component(3dview)]
918	set h [winfo height $itk_component(3dview)]
919	EventuallyResize $w $h
920	}
921	return $result
922	}
923
924	#
925	# isconnected --
926	#
927	# Indicates if we are currently connected to the visualization server.
928	#
929	itcl::body Rappture::FlowvisViewer::isconnected {} {
930	return [VisViewer::IsConnected]
931	}
932
933	#
934	# disconnect --
935	#
936	itcl::body Rappture::FlowvisViewer::disconnect {} {
937	Disconnect
938	}
939
940	#
941	# Disconnect --
942	#
943	# Clients use this method to disconnect from the current rendering
944	# server.
945	#
946	itcl::body Rappture::FlowvisViewer::Disconnect {} {
947	VisViewer::Disconnect
948
949	# disconnected -- no more data sitting on server
950	array unset _serverObjs
951	}
952
953	# ----------------------------------------------------------------------
954	# USAGE: SendTransferFuncs
955	# ----------------------------------------------------------------------
956	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
957	if { $_activeTf == "" } {
958	puts stderr "no active tf"
959	return
960	}
961	set tf $_activeTf
962	if { $_first == "" } {
963	puts stderr "no first"
964	return
965	}
966
967	# Ensure that the global opacity and thickness settings (in the slider
968	# settings widgets) are used for the active transfer-function. Update the
969	# values in the _settings varible.
970	set value $_settings($this-opacity)
971	set opacity [expr { double($value) * 0.01 }]
972	set _settings($this-$tf-opacity) $opacity
973	set value $_settings($this-thickness)
974	# Scale values between 0.00001 and 0.01000
975	set thickness [expr {double($value) * 0.0001}]
976	set _settings($this-$tf-thickness) $thickness
977
978	foreach key [array names _obj2style $_first-*] {
979	if { [info exists _obj2style($key)] } {
980	foreach tf $_obj2style($key) {
981	ComputeTransferFunc $tf
982	}
983	}
984	}
985	EventuallyResizeLegend
986	}
987
988	# ----------------------------------------------------------------------
989	# USAGE: ReceiveImage -bytes $size -type $type -token $token
990	#
991	# Invoked automatically whenever the "image" command comes in from
992	# the rendering server. Indicates that binary image data with the
993	# specified <size> will follow.
994	# ----------------------------------------------------------------------
995	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
996	array set info {
997	-token "???"
998	-bytes 0
999	-type image
1000	}
1001	array set info $args
1002	set bytes [ReceiveBytes $info(-bytes)]
1003	ReceiveEcho <<line "<read $info(-bytes) bytes"
1004	switch -- $info(-type) {
1005	"image" {
1006	$_image(plot) configure -data $bytes
1007	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1008	}
1009	"print" {
1010	set tag $this-$info(-token)
1011	set _hardcopy($tag) $bytes
1012	}
1013	"movie" {
1014	set tag $this-$info(-token)
1015	set _hardcopy($tag) $bytes
1016	}
1017	default {
1018	puts stderr "unknown download type $info(-type)"
1019	}
1020	}
1021	}
1022
1023	#
1024	# ReceiveLegend --
1025	#
1026	# The procedure is the response from the render server to each "legend"
1027	# command. The server sends back a "legend" command invoked our
1028	# the slave interpreter. The purpose is to collect data of the image
1029	# representing the legend in the canvas. In addition, the isomarkers
1030	# of the active transfer function are displayed.
1031	#
1032	# I don't know is this is the right place to display the isomarkers.
1033	# I don't know all the different paths used to draw the plot. There's
1034	# "Rebuild", "add", etc.
1035	#
1036	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1037	if { ![isconnected] } {
1038	return
1039	}
1040	#puts stderr "receive legend $tag $vmin $vmax $size"
1041	set bytes [ReceiveBytes $size]
1042	$_image(legend) configure -data $bytes
1043	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1044
1045	set c $itk_component(legend)
1046	set w [winfo width $c]
1047	set h [winfo height $c]
1048	set lx 10
1049	set ly [expr {$h - 1}]
1050	if {"" == [$c find withtag colorbar]} {
1051	$c create image 10 10 -anchor nw \
1052	-image $_image(legend) -tags colorbar
1053	$c create text $lx $ly -anchor sw \
1054	-fill $itk_option(-plotforeground) -tags "limits vmin"
1055	$c create text [expr {$w-$lx}] $ly -anchor se \
1056	-fill $itk_option(-plotforeground) -tags "limits vmax"
1057	$c lower colorbar
1058	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
1059	}
1060	# Display the markers used by the active transfer function.
1061	set tf $_obj2style($tag)
1062	foreach {vmin vmax} [limits $tf] break
1063	$c itemconfigure vmin -text [format %g $vmin]
1064	$c coords vmin $lx $ly
1065
1066	$c itemconfigure vmax -text [format %g $vmax]
1067	$c coords vmax [expr {$w-$lx}] $ly
1068
1069	if { [info exists _isomarkers($tf)] } {
1070	foreach m $_isomarkers($tf) {
1071	$m visible yes
1072	}
1073	}
1074	}
1075
1076	#
1077	# ReceiveData --
1078	#
1079	# The procedure is the response from the render server to each "data
1080	# follows" command. The server sends back a "data" command invoked our
1081	# the slave interpreter. The purpose is to collect the min/max of the
1082	# volume sent to the render server. Since the client (flowvisviewer)
1083	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1084	# tell us what the limits are. Once we've received the limits to all
1085	# the data we've sent (tracked by _recvObjs) we can then determine
1086	# what the transfer functions are for these # volumes.
1087	#
1088	# Note: There is a considerable tradeoff in having the server report
1089	# back what the data limits are. It means that much of the code
1090	# having to do with transfer-functions has to wait for the data
1091	# to come back, since the isomarkers are calculated based upon
1092	# the data limits. The client code is much messier because of
1093	# this. The alternative is to parse any of the 3D formats on the
1094	# client side.
1095	#
1096	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1097	if { ![isconnected] } {
1098	return
1099	}
1100	# Arguments from server are name value pairs. Stuff them in an array.
1101	array set values $args
1102	set tag $values(tag)
1103	set parts [split $tag -]
1104	set dataobj [lindex $parts 0]
1105	set _serverObjs($tag) 0
1106	set _limits($tag) [list $values(min) $values(max)]
1107	unset _recvObjs($tag)
1108	if { [array size _recvObjs] == 0 } {
1109	updateTransferFunctions
1110	}
1111	}
1112
1113	#
1114	# Rebuild --
1115	#
1116	# Called automatically whenever something changes that affects the data
1117	# in the widget. Clears any existing data and rebuilds the widget to
1118	# display new data.
1119	#
1120	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1121	set w [winfo width $itk_component(3dview)]
1122	set h [winfo height $itk_component(3dview)]
1123	if { $w < 2 \|\| $h < 2 } {
1124	$_dispatcher event -idle !rebuild
1125	return
1126	}
1127
1128	# Turn on buffering of commands to the server. We don't want to
1129	# be preempted by a server disconnect/reconnect (which automatically
1130	# generates a new call to Rebuild).
1131	StartBufferingCommands
1132
1133	# Hide all the isomarkers. Can't remove them. Have to remember the
1134	# settings since the user may have created/deleted/moved markers.
1135
1136	foreach tf [array names _isomarkers] {
1137	foreach m $_isomarkers($tf) {
1138	$m visible no
1139	}
1140	}
1141
1142	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1143	set _width $w
1144	set _height $h
1145	$_arcball resize $w $h
1146	Resize
1147	}
1148
1149	set _first ""
1150	foreach dataobj [get] {
1151	foreach comp [$dataobj components] {
1152	set tag $dataobj-$comp
1153	set isvtk 0
1154	# FIXME: Would like to use the type method of the dataobj
1155	# but the returned value isn't well defined now
1156	if {[catch {
1157	# Send the data as one huge base64-encoded mess -- yuck!
1158	set data [$dataobj blob $comp]
1159	}]} {
1160	set data [$dataobj vtkdata $comp]
1161	set isvtk 1
1162	}
1163	set nbytes [string length $data]
1164	if { $_reportClientInfo } {
1165	set info {}
1166	lappend info "tool_id" [$dataobj hints toolId]
1167	lappend info "tool_name" [$dataobj hints toolName]
1168	lappend info "tool_version" [$dataobj hints toolRevision]
1169	lappend info "tool_title" [$dataobj hints toolTitle]
1170	lappend info "dataset_label" [$dataobj hints label]
1171	lappend info "dataset_size" $nbytes
1172	lappend info "dataset_tag" $tag
1173	SendCmd "clientinfo [list $info]"
1174	}
1175	set extents [$dataobj extents $comp]
1176	# I have a field. Is a vector field or a volume field?
1177	if { !$isvtk && $extents == 1 } {
1178	set cmd "volume data follows $nbytes $tag\n"
1179	} else {
1180	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1181	if { $cmd == "" } {
1182	puts stderr "no command"
1183	continue
1184	}
1185	}
1186	append _outbuf $cmd
1187	append _outbuf $data
1188	NameTransferFunc $dataobj $comp
1189	set _recvObjs($tag) 1
1190	}
1191	}
1192
1193	set _first [lindex [get] 0]
1194
1195	foreach axis {x y z} {
1196	# Turn off cutplanes for all volumes
1197	SendCmd "cutplane state 0 $axis"
1198	}
1199
1200	# Reset the camera and other view parameters
1201	InitSettings light2side ambient diffuse specularLevel specularExponent \
1202	transp isosurface grid axes volume outline \
1203	cutplaneVisible xcutplane ycutplane zcutplane
1204
1205	# nothing to send -- activate the proper volume
1206	if {"" != $_first} {
1207	set axis [$_first hints updir]
1208	if {"" != $axis} {
1209	SendCmd "up $axis"
1210	}
1211	set location [$_first hints camera]
1212	if { $location != "" } {
1213	array set _view $location
1214	}
1215
1216	}
1217	set _settings($this-qw) $_view(qw)
1218	set _settings($this-qx) $_view(qx)
1219	set _settings($this-qy) $_view(qy)
1220	set _settings($this-qz) $_view(qz)
1221	set _settings($this-xpan) $_view(xpan)
1222	set _settings($this-ypan) $_view(ypan)
1223	set _settings($this-zoom) $_view(zoom)
1224
1225	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1226	$_arcball quaternion $q
1227	SendCmd "camera orient $q"
1228	SendCmd "camera reset"
1229	PanCamera
1230	SendCmd "camera zoom $_view(zoom)"
1231
1232	foreach dataobj [get] {
1233	foreach comp [$dataobj components] {
1234	NameTransferFunc $dataobj $comp
1235	}
1236	}
1237
1238	# nothing to send -- activate the proper ivol
1239	set _first [lindex [get] 0]
1240	if {"" != $_first} {
1241	set axis [$_first hints updir]
1242	if {"" != $axis} {
1243	SendCmd "up $axis"
1244	}
1245	set location [$_first hints camera]
1246	if { $location != "" } {
1247	array set _view $location
1248	}
1249	set comp [lindex [$_first components] 0]
1250	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1251	}
1252
1253
1254	# sync the state of slicers
1255	set vols [CurrentVolumeIds -cutplanes]
1256	foreach axis {x y z} {
1257	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1258	SendCmd "cutplane position $pos $axis $vols"
1259	}
1260	SendCmd "volume data state $_settings($this-volume)"
1261	EventuallyResizeLegend
1262
1263	# Actually write the commands to the server socket. If it fails, we don't
1264	# care. We're finished here.
1265	blt::busy hold $itk_component(hull)
1266	StopBufferingCommands
1267	blt::busy release $itk_component(hull)
1268	set _reset 0
1269	}
1270
1271	# ----------------------------------------------------------------------
1272	# USAGE: CurrentVolumeIds ?-cutplanes?
1273	#
1274	# Returns a list of volume server IDs for the current volume being
1275	# displayed. This is normally a single ID, but it might be a list
1276	# of IDs if the current data object has multiple components.
1277	# ----------------------------------------------------------------------
1278	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1279	return ""
1280	if { $_first == "" } {
1281	return
1282	}
1283	foreach key [array names _serverObjs -] {
1284	if {[string match $_first-* $key]} {
1285	array set styles {
1286	-cutplanes 1
1287	}
1288	foreach {dataobj comp} [split $key -] break
1289	array set styles [lindex [$dataobj components -style $comp] 0]
1290	if {$what != "-cutplanes" \|\| $styles(-cutplanes)} {
1291	lappend rlist $_serverObjs($key)
1292	}
1293	}
1294	}
1295	return $rlist
1296	}
1297
1298	# ----------------------------------------------------------------------
1299	# USAGE: Zoom in
1300	# USAGE: Zoom out
1301	# USAGE: Zoom reset
1302	#
1303	# Called automatically when the user clicks on one of the zoom
1304	# controls for this widget. Changes the zoom for the current view.
1305	# ----------------------------------------------------------------------
1306	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1307	switch -- $option {
1308	"in" {
1309	set _view(zoom) [expr {$_view(zoom)*1.25}]
1310	set _settings($this-zoom) $_view(zoom)
1311	SendCmd "camera zoom $_view(zoom)"
1312	}
1313	"out" {
1314	set _view(zoom) [expr {$_view(zoom)*0.8}]
1315	set _settings($this-zoom) $_view(zoom)
1316	SendCmd "camera zoom $_view(zoom)"
1317	}
1318	"reset" {
1319	array set _view {
1320	qw 0.853553
1321	qx -0.353553
1322	qy 0.353553
1323	qz 0.146447
1324	zoom 1.0
1325	xpan 0
1326	ypan 0
1327	}
1328	if { $_first != "" } {
1329	set location [$_first hints camera]
1330	if { $location != "" } {
1331	array set _view $location
1332	}
1333	}
1334	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1335	$_arcball quaternion $q
1336	SendCmd "camera orient $q"
1337	SendCmd "camera reset"
1338	set _settings($this-qw) $_view(qw)
1339	set _settings($this-qx) $_view(qx)
1340	set _settings($this-qy) $_view(qy)
1341	set _settings($this-qz) $_view(qz)
1342	set _settings($this-xpan) $_view(xpan)
1343	set _settings($this-ypan) $_view(ypan)
1344	set _settings($this-zoom) $_view(zoom)
1345	}
1346	}
1347	}
1348
1349	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1350	set x $_view(xpan)
1351	set y $_view(ypan)
1352	SendCmd "camera pan $x $y"
1353	}
1354
1355	# ----------------------------------------------------------------------
1356	# USAGE: Rotate click <x> <y>
1357	# USAGE: Rotate drag <x> <y>
1358	# USAGE: Rotate release <x> <y>
1359	#
1360	# Called automatically when the user clicks/drags/releases in the
1361	# plot area. Moves the plot according to the user's actions.
1362	# ----------------------------------------------------------------------
1363	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1364	switch -- $option {
1365	click {
1366	$itk_component(3dview) configure -cursor fleur
1367	set _click(x) $x
1368	set _click(y) $y
1369	}
1370	drag {
1371	if {[array size _click] == 0} {
1372	Rotate click $x $y
1373	} else {
1374	set w [winfo width $itk_component(3dview)]
1375	set h [winfo height $itk_component(3dview)]
1376	if {$w <= 0 \|\| $h <= 0} {
1377	return
1378	}
1379
1380	if {[catch {
1381	# this fails sometimes for no apparent reason
1382	set dx [expr {double($x-$_click(x))/$w}]
1383	set dy [expr {double($y-$_click(y))/$h}]
1384	}]} {
1385	return
1386	}
1387
1388	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1389	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1390	set _settings($this-qw) $_view(qw)
1391	set _settings($this-qx) $_view(qx)
1392	set _settings($this-qy) $_view(qy)
1393	set _settings($this-qz) $_view(qz)
1394	SendCmd "camera orient $q"
1395
1396	set _click(x) $x
1397	set _click(y) $y
1398	}
1399	}
1400	release {
1401	Rotate drag $x $y
1402	$itk_component(3dview) configure -cursor ""
1403	catch {unset _click}
1404	}
1405	default {
1406	error "bad option \"$option\": should be click, drag, release"
1407	}
1408	}
1409	}
1410
1411	# ----------------------------------------------------------------------
1412	# USAGE: $this Pan click x y
1413	# $this Pan drag x y
1414	# $this Pan release x y
1415	#
1416	# Called automatically when the user clicks on one of the zoom
1417	# controls for this widget. Changes the zoom for the current view.
1418	# ----------------------------------------------------------------------
1419	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1420	# Experimental stuff
1421	set w [winfo width $itk_component(3dview)]
1422	set h [winfo height $itk_component(3dview)]
1423	if { $option == "set" } {
1424	set x [expr $x / double($w)]
1425	set y [expr $y / double($h)]
1426	set _view(xpan) [expr $_view(xpan) + $x]
1427	set _view(ypan) [expr $_view(ypan) + $y]
1428	PanCamera
1429	set _settings($this-xpan) $_view(xpan)
1430	set _settings($this-ypan) $_view(ypan)
1431	return
1432	}
1433	if { $option == "click" } {
1434	set _click(x) $x
1435	set _click(y) $y
1436	$itk_component(3dview) configure -cursor hand1
1437	}
1438	if { $option == "drag" \|\| $option == "release" } {
1439	set dx [expr ($_click(x) - $x)/double($w)]
1440	set dy [expr ($_click(y) - $y)/double($h)]
1441	set _click(x) $x
1442	set _click(y) $y
1443	set _view(xpan) [expr $_view(xpan) - $dx]
1444	set _view(ypan) [expr $_view(ypan) - $dy]
1445	PanCamera
1446	set _settings($this-xpan) $_view(xpan)
1447	set _settings($this-ypan) $_view(ypan)
1448	}
1449	if { $option == "release" } {
1450	$itk_component(3dview) configure -cursor ""
1451	}
1452	}
1453
1454
1455	# ----------------------------------------------------------------------
1456	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1457	#
1458	# Called when the user clicks on the record, stop or play buttons
1459	# for flow visualization.
1460	# ----------------------------------------------------------------------
1461	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1462	switch -- $option {
1463	movie {
1464	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1465	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1466	}
1467	set action [lindex $args 0]
1468	set op [lindex $args 1]
1469	if {$op == ""} { set op "on" }
1470
1471	set current [State $action]
1472	if {$op == "toggle"} {
1473	if {$current == "on"} {
1474	set op "off"
1475	} else {
1476	set op "on"
1477	}
1478	}
1479	set cmds ""
1480	switch -- $action {
1481	record {
1482	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1483	$itk_component(rewind) configure -relief sunken
1484	$itk_component(stop) configure -relief raised
1485	$itk_component(play) configure -relief raised
1486	set inner $itk_component(settingsFrame)
1487	set frames [$inner.framecnt value]
1488	set _settings(nsteps) $frames
1489	set cmds "flow capture $frames"
1490	SendCmd $cmds
1491	}
1492	}
1493	stop {
1494	if { [$itk_component(stop) cget -relief] != "sunken" } {
1495	$itk_component(rewind) configure -relief raised
1496	$itk_component(stop) configure -relief sunken
1497	$itk_component(play) configure -relief raised
1498	_pause
1499	set cmds "flow reset"
1500	SendCmd $cmds
1501	}
1502	}
1503	play {
1504	if { [$itk_component(play) cget -relief] != "sunken" } {
1505	$itk_component(rewind) configure -relief raised
1506	$itk_component(stop) configure -relief raised
1507	$itk_component(play) configure \
1508	-image [Rappture::icon flow-pause] \
1509	-relief sunken
1510	bind $itk_component(play) <ButtonPress> \
1511	[itcl::code $this _pause]
1512	flow next
1513	}
1514	}
1515	default {
1516	error "bad option \"$option\": should be one of record\|stop\|play"
1517	}
1518
1519	}
1520	}
1521	default {
1522	error "bad option \"$option\": should be movie"
1523	}
1524	}
1525	}
1526
1527	# ----------------------------------------------------------------------
1528	# USAGE: Play
1529	#
1530	# ----------------------------------------------------------------------
1531	itcl::body Rappture::FlowvisViewer::Play {} {
1532	SendCmd "flow next"
1533	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1534	$_dispatcher event -after $delay !play
1535	}
1536
1537	# ----------------------------------------------------------------------
1538	# USAGE: Pause
1539	#
1540	# Invoked when the user hits the "pause" button to stop playing the
1541	# current sequence of frames as a movie.
1542	# ----------------------------------------------------------------------
1543	itcl::body Rappture::FlowvisViewer::Pause {} {
1544	$_dispatcher cancel !play
1545
1546	# Toggle the button to "play" mode
1547	$itk_component(play) configure \
1548	-image [Rappture::icon flow-start] \
1549	-relief raised
1550	bind $itk_component(play) <ButtonPress> \
1551	[itcl::code $this Flow movie play toggle]
1552	}
1553
1554	# ----------------------------------------------------------------------
1555	# USAGE: InitSettings <what> ?<value>?
1556	#
1557	# Used internally to update rendering settings whenever parameters
1558	# change in the popup settings panel. Sends the new settings off
1559	# to the back end.
1560	# ----------------------------------------------------------------------
1561	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1562	foreach arg $args {
1563	AdjustSetting $arg
1564	}
1565	}
1566
1567	# ----------------------------------------------------------------------
1568	# USAGE: AdjustSetting <what> ?<value>?
1569	#
1570	# Used internally to update rendering settings whenever parameters
1571	# change in the popup settings panel. Sends the new settings off
1572	# to the back end.
1573	# ----------------------------------------------------------------------
1574	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1575	switch -- $what {
1576	colormap {
1577	set color [$itk_component(colormap) value]
1578	set _settings(colormap) $color
1579	#ResetColormap $color
1580	}
1581	ambient {
1582	if { $_first != "" } {
1583	set comp [lindex [$_first components] 0]
1584	set tag $_first-$comp
1585	set val $_settings($this-ambient)
1586	set val [expr {0.01*$val}]
1587	SendCmd "$tag configure -ambient $val"
1588	}
1589	}
1590	diffuse {
1591	if { $_first != "" } {
1592	set comp [lindex [$_first components] 0]
1593	set tag $_first-$comp
1594	set val $_settings($this-diffuse)
1595	set val [expr {0.01*$val}]
1596	SendCmd "$tag configure -diffuse $val"
1597	}
1598	}
1599	specularLevel {
1600	if { $_first != "" } {
1601	set comp [lindex [$_first components] 0]
1602	set tag $_first-$comp
1603	set val $_settings($this-specularLevel)
1604	set val [expr {0.01*$val}]
1605	SendCmd "$tag configure -specularLevel $val"
1606	}
1607	}
1608	specularExponent {
1609	if { $_first != "" } {
1610	set comp [lindex [$_first components] 0]
1611	set tag $_first-$comp
1612	set val $_settings($this-specularExponent)
1613	SendCmd "$tag configure -specularExp $val"
1614	}
1615	}
1616	light2side {
1617	if { $_first != "" } {
1618	set comp [lindex [$_first components] 0]
1619	set tag $_first-$comp
1620	set val $_settings($this-light2side)
1621	SendCmd "$tag configure -light2side $val"
1622	}
1623	}
1624	transp {
1625	if { $_first != "" } {
1626	set comp [lindex [$_first components] 0]
1627	set tag $_first-$comp
1628	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1629	SendCmd "$tag configure -opacity $opacity"
1630	}
1631	}
1632	opacity {
1633	if { $_first != "" && $_activeTf != "" } {
1634	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1635	set tf $_activeTf
1636	set _settings($this-$tf-opacity) $opacity
1637	updateTransferFunctions
1638	}
1639	}
1640
1641	thickness {
1642	if { $_first != "" && $_activeTf != "" } {
1643	set val $_settings($this-thickness)
1644	# Scale values between 0.00001 and 0.01000
1645	set sval [expr {0.0001*double($val)}]
1646	set tf $_activeTf
1647	set _settings($this-$tf-thickness) $sval
1648	updateTransferFunctions
1649	}
1650	}
1651	"outline" {
1652	if { $_first != "" } {
1653	set comp [lindex [$_first components] 0]
1654	set tag $_first-$comp
1655	SendCmd "$tag configure -outline $_settings($this-outline)"
1656	}
1657	}
1658	"isosurface" {
1659	if { [isconnected] } {
1660	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1661	}
1662	}
1663	"grid" {
1664	if { [isconnected] } {
1665	SendCmd "grid visible $_settings($this-grid)"
1666	}
1667	}
1668	"axes" {
1669	if { [isconnected] } {
1670	SendCmd "axis visible $_settings($this-axes)"
1671	}
1672	}
1673	"legend" {
1674	if { $_settings($this-legend) } {
1675	blt::table $itk_component(plotarea) \
1676	0,0 $itk_component(3dview) -fill both \
1677	1,0 $itk_component(legend) -fill x
1678	blt::table configure $itk_component(plotarea) r1 -resize none
1679	} else {
1680	blt::table forget $itk_component(legend)
1681	}
1682	}
1683	"volume" {
1684	if { $_first != "" } {
1685	set comp [lindex [$_first components] 0]
1686	set tag $_first-$comp
1687	SendCmd "$tag configure -volume $_settings($this-volume)"
1688	}
1689	}
1690	"cutplaneVisible" {
1691	set bool $_settings($this-$what)
1692	set datasets [CurrentVolumeIds -cutplanes]
1693	set tag [lindex $datasets 0]
1694	SendCmd "cutplane visible $bool $tag"
1695	}
1696	"xcutplane" - "ycutplane" - "zcutplane" {
1697	set axis [string range $what 0 0]
1698	set bool $_settings($this-$what)
1699	if { [isconnected] } {
1700	set vols [CurrentVolumeIds -cutplanes]
1701	SendCmd "cutplane state $bool $axis $vols"
1702	}
1703	if { $bool } {
1704	$itk_component(${axis}CutScale) configure -state normal \
1705	-troughcolor white
1706	} else {
1707	$itk_component(${axis}CutScale) configure -state disabled \
1708	-troughcolor grey82
1709	}
1710	}
1711	default {
1712	error "don't know how to fix $what"
1713	}
1714	}
1715	}
1716
1717	# ----------------------------------------------------------------------
1718	# USAGE: ResizeLegend
1719	#
1720	# Used internally to update the legend area whenever it changes size
1721	# or when the field changes. Asks the server to send a new legend
1722	# for the current field.
1723	# ----------------------------------------------------------------------
1724	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1725	set _resizeLegendPending 0
1726	set lineht [font metrics $itk_option(-font) -linespace]
1727	set w [expr {$_width-20}]
1728	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1729
1730	if { $_first == "" } {
1731	return
1732	}
1733	set comp [lindex [$_first components] 0]
1734	set tag $_first-$comp
1735	#set _activeTf [lindex $_obj2style($tag) 0]
1736	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1737	#SendCmd "legend $_activeTf $w $h"
1738	SendCmd "$tag legend $w $h"
1739	} else {
1740	# Can't do this as this will remove the items associated with the
1741	# isomarkers.
1742
1743	#$itk_component(legend) delete all
1744	}
1745	}
1746
1747	#
1748	# NameTransferFunc --
1749	#
1750	# Creates a transfer function name based on the <style> settings in the
1751	# library run.xml file. This placeholder will be used later to create
1752	# and send the actual transfer function once the data info has been sent
1753	# to us by the render server. [We won't know the volume limits until the
1754	# server parses the 3D data and sends back the limits via ReceiveData.]
1755	#
1756	# FIXME: The current way we generate transfer-function names completely
1757	# ignores the -markers option. The problem is that we are forced
1758	# to compute the name from an increasing complex set of values:
1759	# color, levels, marker, opacity. I think we're stuck doing it
1760	# now.
1761	#
1762	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj cname } {
1763	array set styles {
1764	-color BCGYR
1765	-levels 6
1766	-light 40
1767	-opacity 1.0
1768	-transp 50
1769	}
1770	array set styles [lindex [$dataobj components -style $cname] 0]
1771	set _settings($this-light) $styles(-light)
1772	set _settings($this-transp) $styles(-transp)
1773	set _settings($this-opacity) [expr $styles(-opacity) * 100]
1774	set _obj2style($dataobj-$cname) $cname
1775	lappend _style2objs($cname) $dataobj $cname
1776	return $cname
1777	}
1778
1779	#
1780	# ComputeTransferFunc --
1781	#
1782	# Computes and sends the transfer function to the render server. It's
1783	# assumed that the volume data limits are known and that the global
1784	# transfer-functions slider values have be setup. Both parts are
1785	# needed to compute the relative value (location) of the marker, and
1786	# the alpha map of the transfer function.
1787	#
1788	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1789	array set styles {
1790	-color BCGYR
1791	-levels 6
1792	-opacity 1.0
1793	-light 40
1794	-transp 50
1795	}
1796	set dataobj ""; set comp ""
1797	foreach {dataobj comp} $_style2objs($tf) break
1798	if { $dataobj == "" } {
1799	return 0
1800	}
1801	array set styles [lindex [$dataobj components -style $comp] 0]
1802
1803
1804	# We have to parse the style attributes for a volume using this
1805	# transfer-function once. This sets up the initial isomarkers for the
1806	# transfer function. The user may add/delete markers, so we have to
1807	# maintain a list of markers for each transfer-function. We use the one
1808	# of the volumes (the first in the list) using the transfer-function as a
1809	# reference.
1810	#
1811	# FIXME: The current way we generate transfer-function names completely
1812	# ignores the -markers option. The problem is that we are forced
1813	# to compute the name from an increasing complex set of values:
1814	# color, levels, marker, opacity. I think the cow's out of the
1815	# barn on this one.
1816
1817	if { ![info exists _isomarkers($tf)] } {
1818	# Have to defer creation of isomarkers until we have data limits
1819	if { [info exists styles(-markers)] &&
1820	[llength $styles(-markers)] > 0 } {
1821	ParseMarkersOption $tf $styles(-markers)
1822	} else {
1823	ParseLevelsOption $tf $styles(-levels)
1824	}
1825	}
1826	if { [info exists styles(-nonuniformcolors)] } {
1827	foreach { value color } $styles(-nonuniformcolors) {
1828	append cmap "$value [Color2RGB $color] "
1829	}
1830	} else {
1831	set cmap [ColorsToColormap $styles(-color)]
1832	}
1833	set tag $this-$tf
1834	if { ![info exists _settings($tag-opacity)] } {
1835	set _settings($tag-opacity) $styles(-opacity)
1836	}
1837	set max 1.0 ;#$_settings($tag-opacity)
1838
1839	set isovalues {}
1840	foreach m $_isomarkers($tf) {
1841	lappend isovalues [$m relval]
1842	}
1843	# Sort the isovalues
1844	set isovalues [lsort -real $isovalues]
1845
1846	if { ![info exists _settings($tag-thickness)]} {
1847	set _settings($tag-thickness) 0.005
1848	}
1849	set delta $_settings($tag-thickness)
1850
1851	set first [lindex $isovalues 0]
1852	set last [lindex $isovalues end]
1853	set wmap ""
1854	if { $first == "" \|\| $first != 0.0 } {
1855	lappend wmap 0.0 0.0
1856	}
1857	foreach x $isovalues {
1858	set x1 [expr {$x-$delta-0.00001}]
1859	set x2 [expr {$x-$delta}]
1860	set x3 [expr {$x+$delta}]
1861	set x4 [expr {$x+$delta+0.00001}]
1862	if { $x1 < 0.0 } {
1863	set x1 0.0
1864	} elseif { $x1 > 1.0 } {
1865	set x1 1.0
1866	}
1867	if { $x2 < 0.0 } {
1868	set x2 0.0
1869	} elseif { $x2 > 1.0 } {
1870	set x2 1.0
1871	}
1872	if { $x3 < 0.0 } {
1873	set x3 0.0
1874	} elseif { $x3 > 1.0 } {
1875	set x3 1.0
1876	}
1877	if { $x4 < 0.0 } {
1878	set x4 0.0
1879	} elseif { $x4 > 1.0 } {
1880	set x4 1.0
1881	}
1882	# add spikes in the middle
1883	lappend wmap $x1 0.0
1884	lappend wmap $x2 $max
1885	lappend wmap $x3 $max
1886	lappend wmap $x4 0.0
1887	}
1888	if { $last == "" \|\| $last != 1.0 } {
1889	lappend wmap 1.0 0.0
1890	}
1891	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1892	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1893	}
1894
1895	# ----------------------------------------------------------------------
1896	# CONFIGURATION OPTION: -plotbackground
1897	# ----------------------------------------------------------------------
1898	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1899	if { [isconnected] } {
1900	set color $itk_option(-plotbackground)
1901	set rgb [Color2RGB $color]
1902	SendCmd "screen bgcolor $rgb"
1903	$itk_component(legend) configure -background $color
1904	}
1905	}
1906
1907	# ----------------------------------------------------------------------
1908	# CONFIGURATION OPTION: -plotforeground
1909	# ----------------------------------------------------------------------
1910	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1911	if { [isconnected] } {
1912	set color $itk_option(-plotforeground)
1913	set rgb [Color2RGB $color]
1914	SendCmd "volume outline color $rgb"
1915	SendCmd "grid axiscolor $rgb"
1916	SendCmd "grid linecolor $rgb"
1917	$itk_component(legend) itemconfigure labels -fill $color
1918	$itk_component(legend) itemconfigure limits -fill $color
1919	}
1920	}
1921
1922	# ----------------------------------------------------------------------
1923	# CONFIGURATION OPTION: -plotoutline
1924	# ----------------------------------------------------------------------
1925	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1926	# Must check if we are connected because this routine is called from the
1927	# class body when the -plotoutline itk_option is defined. At that point
1928	# the FlowvisViewer class constructor hasn't been called, so we can't
1929	# start sending commands to visualization server.
1930	if { [isconnected] } {
1931	if {"" == $itk_option(-plotoutline)} {
1932	SendCmd "volume outline state off"
1933	} else {
1934	SendCmd "volume outline state on"
1935	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1936	}
1937	}
1938	}
1939
1940	#
1941	# The -levels option takes a single value that represents the number
1942	# of evenly distributed markers based on the current data range. Each
1943	# marker is a relative value from 0.0 to 1.0.
1944	#
1945	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1946	set c $itk_component(legend)
1947	regsub -all "," $levels " " levels
1948	if {[string is int $levels]} {
1949	for {set i 1} { $i <= $levels } {incr i} {
1950	set x [expr {double($i)/($levels+1)}]
1951	set m [Rappture::IsoMarker \#auto $c $this $tf]
1952	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1953	$m relval $x
1954	lappend _isomarkers($tf) $m
1955	}
1956	} else {
1957	foreach x $levels {
1958	set m [Rappture::IsoMarker \#auto $c $this $tf]
1959	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1960	$m relval $x
1961	lappend _isomarkers($tf) $m
1962	}
1963	}
1964	}
1965
1966	#
1967	# The -markers option takes a list of zero or more values (the values
1968	# may be separated either by spaces or commas) that have the following
1969	# format:
1970	#
1971	# N% Percent of current total data range. Converted to
1972	# to a relative value between 0.0 and 1.0.
1973	# N Absolute value of marker. If the marker is outside of
1974	# the current range, it will be displayed on the outer
1975	# edge of the legends, but it range it represents will
1976	# not be seen.
1977	#
1978	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1979	set c $itk_component(legend)
1980	regsub -all "," $markers " " markers
1981	foreach marker $markers {
1982	set n [scan $marker "%g%s" value suffix]
1983	if { $n == 2 && $suffix == "%" } {
1984	# ${n}% : Set relative value.
1985	set value [expr {$value * 0.01}]
1986	set m [Rappture::IsoMarker \#auto $c $this $tf]
1987	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1988	$m relval $value
1989	lappend _isomarkers($tf) $m
1990	} else {
1991	# ${n} : Set absolute value.
1992	set m [Rappture::IsoMarker \#auto $c $this $tf]
1993	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1994	$m absval $value
1995	lappend _isomarkers($tf) $m
1996	}
1997	}
1998	}
1999
2000	# ----------------------------------------------------------------------
2001	# USAGE: UndateTransferFuncs
2002	# ----------------------------------------------------------------------
2003	itcl::body Rappture::FlowvisViewer::updateTransferFunctions {} {
2004	$_dispatcher event -after 100 !send_transfunc
2005	}
2006
2007	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2008	if { $_activeTf == "" } {
2009	error "active transfer function isn't set"
2010	}
2011	set tf $_activeTf
2012	set c $itk_component(legend)
2013	set m [Rappture::IsoMarker \#auto $c $this $tf]
2014	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
2015	set w [winfo width $c]
2016	$m relval [expr {double($x-10)/($w-20)}]
2017	lappend _isomarkers($tf) $m
2018	updateTransferFunctions
2019	return 1
2020	}
2021
2022	itcl::body Rappture::FlowvisViewer::removeDuplicateMarker { marker x } {
2023	set tf [$marker transferfunc]
2024	set bool 0
2025	if { [info exists _isomarkers($tf)] } {
2026	set list {}
2027	set marker [namespace tail $marker]
2028	foreach m $_isomarkers($tf) {
2029	set sx [$m screenpos]
2030	if { $m != $marker } {
2031	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2032	$marker relval [$m relval]
2033	itcl::delete object $m
2034	bell
2035	set bool 1
2036	continue
2037	}
2038	}
2039	lappend list $m
2040	}
2041	set _isomarkers($tf) $list
2042	updateTransferFunctions
2043	}
2044	return $bool
2045	}
2046
2047	itcl::body Rappture::FlowvisViewer::overMarker { marker x } {
2048	set tf [$marker transferfunc]
2049	if { [info exists _isomarkers($tf)] } {
2050	set marker [namespace tail $marker]
2051	foreach m $_isomarkers($tf) {
2052	set sx [$m screenpos]
2053	if { $m != $marker } {
2054	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2055	$m activate $bool
2056	}
2057	}
2058	}
2059	return ""
2060	}
2061
2062	itcl::body Rappture::FlowvisViewer::limits { cname } {
2063	set _limits(v) [list 0.0 1.0]
2064	if { ![info exists _style2objs($cname)] } {
2065	puts stderr "no style2objs for $cname cname=($cname)"
2066	return [array get _limits]
2067	}
2068	set min ""; set max ""
2069	foreach tag [GetDatasetsWithComponent $cname] {
2070	if { ![info exists _serverObjs($tag)] } {
2071	puts stderr "$tag not in serverObjs?"
2072	continue
2073	}
2074	if { ![info exists _limits($tag)] } {
2075	puts stderr "$tag no min?"
2076	continue
2077	}
2078	foreach {vmin vmax} $_limits($tag) break
2079	if { $min == "" \|\| $min > $vmin } {
2080	set min $vmin
2081	}
2082	if { $max == "" \|\| $max < $vmax } {
2083	set max $vmax
2084	}
2085	}
2086	if { $min != "" && $max != "" } {
2087	set _limits(v) [list $min $max]
2088	set _limits($cname) [list $min $max]
2089	}
2090	return $_limits($cname)
2091	}
2092
2093	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2094	foreach { key value } {
2095	grid 0
2096	axes 0
2097	outline 1
2098	volume 1
2099	legend 1
2100	particles 1
2101	lic 1
2102	} {
2103	set _settings($this-$key) $value
2104	}
2105
2106	set fg [option get $itk_component(hull) font Font]
2107	#set bfg [option get $itk_component(hull) boldFont Font]
2108
2109	set inner [$itk_component(main) insert end \
2110	-title "View Settings" \
2111	-icon [Rappture::icon wrench]]
2112	$inner configure -borderwidth 4
2113
2114	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2115	checkbutton $inner.isosurface \
2116	-text "Isosurface shading" \
2117	-variable [itcl::scope _settings($this-isosurface)] \
2118	-command [itcl::code $this AdjustSetting isosurface] \
2119	-font "Arial 9"
2120
2121	checkbutton $inner.axes \
2122	-text "Axes" \
2123	-variable [itcl::scope _settings($this-axes)] \
2124	-command [itcl::code $this AdjustSetting axes] \
2125	-font "Arial 9"
2126
2127	checkbutton $inner.grid \
2128	-text "Grid" \
2129	-variable [itcl::scope _settings($this-grid)] \
2130	-command [itcl::code $this AdjustSetting grid] \
2131	-font "Arial 9"
2132
2133	checkbutton $inner.outline \
2134	-text "Outline" \
2135	-variable [itcl::scope _settings($this-outline)] \
2136	-command [itcl::code $this AdjustSetting outline] \
2137	-font "Arial 9"
2138
2139	checkbutton $inner.legend \
2140	-text "Legend" \
2141	-variable [itcl::scope _settings($this-legend)] \
2142	-command [itcl::code $this AdjustSetting legend] \
2143	-font "Arial 9"
2144
2145	checkbutton $inner.volume \
2146	-text "Volume" \
2147	-variable [itcl::scope _settings($this-volume)] \
2148	-command [itcl::code $this AdjustSetting volume] \
2149	-font "Arial 9"
2150
2151	checkbutton $inner.particles \
2152	-text "Particles" \
2153	-variable [itcl::scope _settings($this-particles)] \
2154	-command [itcl::code $this AdjustSetting particles] \
2155	-font "Arial 9"
2156
2157	checkbutton $inner.lic \
2158	-text "Lic" \
2159	-variable [itcl::scope _settings($this-lic)] \
2160	-command [itcl::code $this AdjustSetting lic] \
2161	-font "Arial 9"
2162
2163	frame $inner.frame
2164
2165	blt::table $inner \
2166	0,0 $inner.axes -cspan 2 -anchor w \
2167	1,0 $inner.grid -cspan 2 -anchor w \
2168	2,0 $inner.outline -cspan 2 -anchor w \
2169	3,0 $inner.volume -cspan 2 -anchor w \
2170	4,0 $inner.legend -cspan 2 -anchor w
2171
2172	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2173
2174	blt::table configure $inner r* -resize none
2175	blt::table configure $inner r5 -resize expand
2176	}
2177
2178	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2179	set inner [$itk_component(main) insert end \
2180	-title "Volume Settings" \
2181	-icon [Rappture::icon volume-on]]
2182	$inner configure -borderwidth 4
2183
2184	set fg [option get $itk_component(hull) font Font]
2185	#set bfg [option get $itk_component(hull) boldFont Font]
2186
2187	checkbutton $inner.vol -text "Show volume" -font $fg \
2188	-text "Volume" \
2189	-variable [itcl::scope _settings($this-volume)] \
2190	-command [itcl::code $this AdjustSetting volume] \
2191	-font "Arial 9"
2192
2193	label $inner.shading -text "Shading:" -font $fg
2194
2195	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2196	-variable [itcl::scope _settings($this-light2side)] \
2197	-command [itcl::code $this AdjustSetting light2side]
2198
2199	label $inner.ambient_l -text "Ambient" -font $fg
2200	::scale $inner.ambient -from 0 -to 100 -orient horizontal \
2201	-variable [itcl::scope _settings($this-ambient)] \
2202	-width 10 \
2203	-showvalue off -command [itcl::code $this AdjustSetting ambient]
2204
2205	label $inner.diffuse_l -text "Diffuse" -font $fg
2206	::scale $inner.diffuse -from 0 -to 100 -orient horizontal \
2207	-variable [itcl::scope _settings($this-diffuse)] \
2208	-width 10 \
2209	-showvalue off -command [itcl::code $this AdjustSetting diffuse]
2210
2211	label $inner.specularLevel_l -text "Specular" -font $fg
2212	::scale $inner.specularLevel -from 0 -to 100 -orient horizontal \
2213	-variable [itcl::scope _settings($this-specularLevel)] \
2214	-width 10 \
2215	-showvalue off -command [itcl::code $this AdjustSetting specularLevel]
2216
2217	label $inner.specularExponent_l -text "Shininess" -font $fg
2218	::scale $inner.specularExponent -from 10 -to 128 -orient horizontal \
2219	-variable [itcl::scope _settings($this-specularExponent)] \
2220	-width 10 \
2221	-showvalue off -command [itcl::code $this AdjustSetting specularExponent]
2222
2223	label $inner.clear -text "Clear" -font $fg
2224	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2225	-variable [itcl::scope _settings($this-transp)] \
2226	-width 10 \
2227	-showvalue off -command [itcl::code $this AdjustSetting transp]
2228	label $inner.opaque -text "Opaque" -font $fg
2229
2230	label $inner.thin -text "Thin" -font $fg
2231	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2232	-variable [itcl::scope _settings($this-thickness)] \
2233	-width 10 \
2234	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2235	label $inner.thick -text "Thick" -font $fg
2236
2237	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2238	itk_component add colormap {
2239	Rappture::Combobox $inner.colormap -width 10 -editable no
2240	}
2241	$inner.colormap choices insert end [GetColormapList -includeNone]
2242	$itk_component(colormap) value "BCGYR"
2243	bind $inner.colormap <<Value>> \
2244	[itcl::code $this AdjustSetting colormap]
2245
2246	blt::table $inner \
2247	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2248	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2249	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2250	3,0 $inner.ambient_l -anchor e -pady 2 \
2251	3,1 $inner.ambient -cspan 3 -pady 2 -fill x \
2252	4,0 $inner.diffuse_l -anchor e -pady 2 \
2253	4,1 $inner.diffuse -cspan 3 -pady 2 -fill x \
2254	5,0 $inner.specularLevel_l -anchor e -pady 2 \
2255	5,1 $inner.specularLevel -cspan 3 -pady 2 -fill x \
2256	6,0 $inner.specularExponent_l -anchor e -pady 2 \
2257	6,1 $inner.specularExponent -cspan 3 -pady 2 -fill x \
2258	7,0 $inner.clear -anchor e -pady 2 \
2259	7,1 $inner.transp -cspan 2 -pady 2 -fill x \
2260	7,3 $inner.opaque -anchor w -pady 2 \
2261	8,0 $inner.thin -anchor e -pady 2 \
2262	8,1 $inner.thickness -cspan 2 -pady 2 -fill x \
2263	8,3 $inner.thick -anchor w -pady 2
2264
2265	blt::table configure $inner c0 c1 c3 r* -resize none
2266	blt::table configure $inner r9 -resize expand
2267	}
2268
2269	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2270	set inner [$itk_component(main) insert end \
2271	-title "Cutplane Settings" \
2272	-icon [Rappture::icon cutbutton]]
2273	$inner configure -borderwidth 4
2274
2275	# X-value slicer...
2276	itk_component add xCutButton {
2277	Rappture::PushButton $inner.xbutton \
2278	-onimage [Rappture::icon x-cutplane] \
2279	-offimage [Rappture::icon x-cutplane] \
2280	-command [itcl::code $this AdjustSetting xcutplane] \
2281	-variable [itcl::scope _settings($this-xcutplane)]
2282	}
2283	Rappture::Tooltip::for $itk_component(xCutButton) \
2284	"Toggle the X cut plane on/off"
2285	$itk_component(xCutButton) select
2286
2287	itk_component add xCutScale {
2288	::scale $inner.xval -from 100 -to 0 \
2289	-width 10 -orient vertical -showvalue off \
2290	-borderwidth 1 -highlightthickness 0 \
2291	-command [itcl::code $this Slice move x] \
2292	-variable [itcl::scope _settings($this-xcutposition)]
2293	} {
2294	usual
2295	ignore -borderwidth -highlightthickness
2296	}
2297	# Set the default cutplane value before disabling the scale.
2298	$itk_component(xCutScale) set 50
2299	$itk_component(xCutScale) configure -state disabled
2300	Rappture::Tooltip::for $itk_component(xCutScale) \
2301	"@[itcl::code $this SlicerTip x]"
2302
2303	# Y-value slicer...
2304	itk_component add yCutButton {
2305	Rappture::PushButton $inner.ybutton \
2306	-onimage [Rappture::icon y-cutplane] \
2307	-offimage [Rappture::icon y-cutplane] \
2308	-command [itcl::code $this AdjustSetting ycutplane] \
2309	-variable [itcl::scope _settings($this-ycutplane)]
2310	}
2311	Rappture::Tooltip::for $itk_component(yCutButton) \
2312	"Toggle the Y cut plane on/off"
2313	$itk_component(yCutButton) select
2314
2315	itk_component add yCutScale {
2316	::scale $inner.yval -from 100 -to 0 \
2317	-width 10 -orient vertical -showvalue off \
2318	-borderwidth 1 -highlightthickness 0 \
2319	-command [itcl::code $this Slice move y] \
2320	-variable [itcl::scope _settings($this-ycutposition)]
2321	} {
2322	usual
2323	ignore -borderwidth -highlightthickness
2324	}
2325	Rappture::Tooltip::for $itk_component(yCutScale) \
2326	"@[itcl::code $this SlicerTip y]"
2327	# Set the default cutplane value before disabling the scale.
2328	$itk_component(yCutScale) set 50
2329	$itk_component(yCutScale) configure -state disabled
2330
2331	# Z-value slicer...
2332	itk_component add zCutButton {
2333	Rappture::PushButton $inner.zbutton \
2334	-onimage [Rappture::icon z-cutplane] \
2335	-offimage [Rappture::icon z-cutplane] \
2336	-command [itcl::code $this AdjustSetting zcutplane] \
2337	-variable [itcl::scope _settings($this-zcutplane)]
2338	}
2339	Rappture::Tooltip::for $itk_component(zCutButton) \
2340	"Toggle the Z cut plane on/off"
2341	$itk_component(zCutButton) select
2342
2343	itk_component add zCutScale {
2344	::scale $inner.zval -from 100 -to 0 \
2345	-width 10 -orient vertical -showvalue off \
2346	-borderwidth 1 -highlightthickness 0 \
2347	-command [itcl::code $this Slice move z] \
2348	-variable [itcl::scope _settings($this-zcutposition)]
2349	} {
2350	usual
2351	ignore -borderwidth -highlightthickness
2352	}
2353	$itk_component(zCutScale) set 50
2354	$itk_component(zCutScale) configure -state disabled
2355	#$itk_component(zCutScale) configure -state disabled
2356	Rappture::Tooltip::for $itk_component(zCutScale) \
2357	"@[itcl::code $this SlicerTip z]"
2358
2359	blt::table $inner \
2360	1,1 $itk_component(xCutButton) \
2361	1,2 $itk_component(yCutButton) \
2362	1,3 $itk_component(zCutButton) \
2363	0,1 $itk_component(xCutScale) \
2364	0,2 $itk_component(yCutScale) \
2365	0,3 $itk_component(zCutScale) \
2366
2367	blt::table configure $inner r0 r1 c* -resize none
2368	blt::table configure $inner r2 c4 -resize expand
2369	blt::table configure $inner c0 -width 2
2370	blt::table configure $inner c1 c2 c3 -padx 2
2371	}
2372
2373	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2374	set inner [$itk_component(main) insert end \
2375	-title "Camera Settings" \
2376	-icon [Rappture::icon camera]]
2377	$inner configure -borderwidth 4
2378
2379	label $inner.view_l -text "view" -font "Arial 9"
2380	set f [frame $inner.view]
2381	foreach side { front back left right top bottom } {
2382	button $f.$side -image [Rappture::icon view$side] \
2383	-command [itcl::code $this SetOrientation $side]
2384	Rappture::Tooltip::for $f.$side "Change the view to $side"
2385	pack $f.$side -side left
2386	}
2387
2388	blt::table $inner \
2389	0,0 $inner.view_l -anchor e -pady 2 \
2390	0,1 $inner.view -anchor w -pady 2
2391
2392	set row 1
2393	set labels { qw qx qy qz xpan ypan zoom }
2394	foreach tag $labels {
2395	label $inner.${tag}label -text $tag -font "Arial 9"
2396	entry $inner.${tag} -font "Arial 9" -bg white \
2397	-textvariable [itcl::scope _settings($this-$tag)]
2398	bind $inner.${tag} <KeyPress-Return> \
2399	[itcl::code $this camera set ${tag}]
2400	blt::table $inner \
2401	$row,0 $inner.${tag}label -anchor e -pady 2 \
2402	$row,1 $inner.${tag} -anchor w -pady 2
2403	blt::table configure $inner r$row -resize none
2404	incr row
2405	}
2406
2407	blt::table configure $inner c* r* -resize none
2408	blt::table configure $inner c2 -resize expand
2409	blt::table configure $inner r$row -resize expand
2410	}
2411
2412	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2413	set flowobj ""
2414	foreach key [array names _obj2flow] {
2415	set flowobj $_obj2flow($key)
2416	break
2417	}
2418	if { $flowobj == "" } {
2419	return
2420	}
2421	if { [winfo exists $w.frame] } {
2422	destroy $w.frame
2423	}
2424	set inner [frame $w.frame]
2425	blt::table $w \
2426	5,0 $inner -fill both -cspan 2 -anchor nw
2427	array set hints [$flowobj hints]
2428	checkbutton $inner.showstreams -text "Streams Plane" \
2429	-variable [itcl::scope _settings($this-streams)] \
2430	-command [itcl::code $this streams $key $hints(name)] \
2431	-font "Arial 9"
2432	Rappture::Tooltip::for $inner.showstreams $hints(description)
2433
2434	checkbutton $inner.showarrows -text "Arrows" \
2435	-variable [itcl::scope _settings($this-arrows)] \
2436	-command [itcl::code $this arrows $key $hints(name)] \
2437	-font "Arial 9"
2438
2439	label $inner.particles -text "Particles" -font "Arial 9 bold"
2440	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2441
2442	blt::table $inner \
2443	1,0 $inner.showstreams -anchor w \
2444	2,0 $inner.showarrows -anchor w
2445	blt::table configure $inner c0 c1 -resize none
2446	blt::table configure $inner c2 -resize expand
2447
2448	set row 3
2449	set particles [$flowobj particles]
2450	if { [llength $particles] > 0 } {
2451	blt::table $inner $row,0 $inner.particles -anchor w
2452	incr row
2453	}
2454	foreach part $particles {
2455	array unset info
2456	array set info $part
2457	set name $info(name)
2458	if { ![info exists _settings($this-particles-$name)] } {
2459	set _settings($this-particles-$name) $info(hide)
2460	}
2461	checkbutton $inner.part$row -text $info(label) \
2462	-variable [itcl::scope _settings($this-particles-$name)] \
2463	-onvalue 0 -offvalue 1 \
2464	-command [itcl::code $this particles $key $name] \
2465	-font "Arial 9"
2466	Rappture::Tooltip::for $inner.part$row $info(description)
2467	blt::table $inner $row,0 $inner.part$row -anchor w
2468	if { !$_settings($this-particles-$name) } {
2469	$inner.part$row select
2470	}
2471	incr row
2472	}
2473	set boxes [$flowobj boxes]
2474	if { [llength $boxes] > 0 } {
2475	blt::table $inner $row,0 $inner.boxes -anchor w
2476	incr row
2477	}
2478	foreach box $boxes {
2479	array unset info
2480	array set info $box
2481	set name $info(name)
2482	if { ![info exists _settings($this-box-$name)] } {
2483	set _settings($this-box-$name) $info(hide)
2484	}
2485	checkbutton $inner.box$row -text $info(label) \
2486	-variable [itcl::scope _settings($this-box-$name)] \
2487	-onvalue 0 -offvalue 1 \
2488	-command [itcl::code $this box $key $name] \
2489	-font "Arial 9"
2490	Rappture::Tooltip::for $inner.box$row $info(description)
2491	blt::table $inner $row,0 $inner.box$row -anchor w
2492	if { !$_settings($this-box-$name) } {
2493	$inner.box$row select
2494	}
2495	incr row
2496	}
2497	blt::table configure $inner r* -resize none
2498	blt::table configure $inner r$row -resize expand
2499	blt::table configure $inner c3 -resize expand
2500	event generate [winfo parent [winfo parent $w]] <Configure>
2501	}
2502
2503	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2504	set bool $_settings($this-particles-$name)
2505	SendCmd "$tag particles configure {$name} -hide $bool"
2506	}
2507
2508	itcl::body Rappture::FlowvisViewer::box { tag name } {
2509	set bool $_settings($this-box-$name)
2510	SendCmd "$tag box configure {$name} -hide $bool"
2511	}
2512
2513	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2514	set bool $_settings($this-streams)
2515	SendCmd "$tag configure -slice $bool"
2516	}
2517
2518	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2519	set bool $_settings($this-arrows)
2520	SendCmd "$tag configure -arrows $bool"
2521	}
2522
2523	# ----------------------------------------------------------------------
2524	# USAGE: Slice move x\|y\|z <newval>
2525	#
2526	# Called automatically when the user drags the slider to move the
2527	# cut plane that slices 3D data. Gets the current value from the
2528	# slider and moves the cut plane to the appropriate point in the
2529	# data set.
2530	# ----------------------------------------------------------------------
2531	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2532	switch -- $option {
2533	move {
2534	if {[llength $args] != 2} {
2535	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2536	}
2537	set axis [lindex $args 0]
2538	set newval [lindex $args 1]
2539	set newpos [expr {0.01*$newval}]
2540
2541	# show the current value in the readout
2542
2543	set ids [CurrentVolumeIds -cutplanes]
2544	SendCmd "cutplane position $newpos $axis $ids"
2545	}
2546	default {
2547	error "bad option \"$option\": should be axis, move, or volume"
2548	}
2549	}
2550	}
2551
2552	# ----------------------------------------------------------------------
2553	# USAGE: SlicerTip <axis>
2554	#
2555	# Used internally to generate a tooltip for the x/y/z slicer controls.
2556	# Returns a message that includes the current slicer value.
2557	# ----------------------------------------------------------------------
2558	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2559	set val [$itk_component(${axis}CutScale) get]
2560	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2561	}
2562
2563	itcl::body Rappture::FlowvisViewer::Resize {} {
2564	$_arcball resize $_width $_height
2565	SendCmd "screen size $_width $_height"
2566	set _resizePending 0
2567	}
2568
2569	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2570	set _width $w
2571	set _height $h
2572	$_arcball resize $w $h
2573	if { !$_resizePending } {
2574	$_dispatcher event -after 200 !resize
2575	set _resizePending 1
2576	}
2577	}
2578
2579	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2580	if { !$_resizeLegendPending } {
2581	$_dispatcher event -after 100 !legend
2582	set _resizeLegendPending 1
2583	}
2584	}
2585
2586	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2587	set _flow(goto) $nSteps
2588	if { !$_gotoPending } {
2589	$_dispatcher event -after 1000 !goto
2590	set _gotoPending 1
2591	}
2592	}
2593
2594	# camera --
2595	itcl::body Rappture::FlowvisViewer::camera {option args} {
2596	switch -- $option {
2597	"show" {
2598	puts [array get _view]
2599	}
2600	"set" {
2601	set who [lindex $args 0]
2602	set x $_settings($this-$who)
2603	set code [catch { string is double $x } result]
2604	if { $code != 0 \|\| !$result } {
2605	set _settings($this-$who) $_view($who)
2606	return
2607	}
2608	switch -- $who {
2609	"xpan" - "ypan" {
2610	set _view($who) $_settings($this-$who)
2611	PanCamera
2612	}
2613	"qx" - "qy" - "qz" - "qw" {
2614	set _view($who) $_settings($this-$who)
2615	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2616	$_arcball quaternion $q
2617	SendCmd "camera orient $q"
2618	}
2619	"zoom" {
2620	set _view($who) $_settings($this-$who)
2621	SendCmd "camera zoom $_view(zoom)"
2622	}
2623	}
2624	}
2625	}
2626	}
2627
2628	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2629	set tag "$dataobj-$comp"
2630	if { ![info exists _obj2flow($tag)] } {
2631	append cmd "flow add $tag\n"
2632	append cmd "$tag data follows $nbytes $extents\n"
2633	return $cmd
2634	}
2635	set flowobj $_obj2flow($tag)
2636	if { $flowobj == "" } {
2637	puts stderr "no flowobj"
2638	return ""
2639	}
2640	set cmd {}
2641	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2642	array set info [$flowobj hints]
2643	set _settings($this-volume) $info(volume)
2644	set _settings($this-outline) $info(outline)
2645	set _settings($this-arrows) $info(arrows)
2646	set _settings($this-duration) $info(duration)
2647	$itk_component(speed) value $info(speed)
2648	append cmd "flow add $tag"
2649	append cmd " -position $info(position)"
2650	append cmd " -axis $info(axis)"
2651	append cmd " -volume $info(volume)"
2652	append cmd " -outline $info(outline)"
2653	append cmd " -slice $info(streams)"
2654	append cmd " -arrows $info(arrows)\n"
2655	foreach part [$flowobj particles] {
2656	array unset info
2657	array set info $part
2658	set color [Color2RGB $info(color)]
2659	append cmd "$tag particles add $info(name)"
2660	append cmd " -position $info(position)"
2661	append cmd " -hide $info(hide)"
2662	append cmd " -axis $info(axis)"
2663	append cmd " -color {$color}"
2664	append cmd " -size $info(size)\n"
2665	}
2666	foreach box [$flowobj boxes] {
2667	array unset info
2668	set info(corner1) ""
2669	set info(corner2) ""
2670	array set info $box
2671	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2672	continue
2673	}
2674	set color [Color2RGB $info(color)]
2675	append cmd "$tag box add $info(name)"
2676	append cmd " -color {$color}"
2677	append cmd " -hide $info(hide)"
2678	append cmd " -linewidth $info(linewidth) "
2679	append cmd " -corner1 {$info(corner1)} "
2680	append cmd " -corner2 {$info(corner2)}\n"
2681	}
2682	append cmd "$tag data follows $nbytes $extents\n"
2683	return $cmd
2684	}
2685
2686
2687	#
2688	# flow --
2689	#
2690	# Called when the user clicks on the stop or play buttons
2691	# for flow visualization.
2692	#
2693	# $this flow play
2694	# $this flow stop
2695	# $this flow toggle
2696	# $this flow reset
2697	# $this flow pause
2698	# $this flow next
2699	#
2700	itcl::body Rappture::FlowvisViewer::flow { args } {
2701	set option [lindex $args 0]
2702	switch -- $option {
2703	"goto2" {
2704	puts stderr "actually sending \"flow goto $_flow(goto)\""
2705	SendCmd "flow goto $_flow(goto)"
2706	set _gotoPending 0
2707	}
2708	"goto" {
2709	puts stderr "flow goto to $_settings($this-currenttime)"
2710	# Figure out how many steps to the current time based upon
2711	# the speed and duration.
2712	set current $_settings($this-currenttime)
2713	set speed [$itk_component(speed) value]
2714	set time [str2millisecs $_settings($this-duration)]
2715	$itk_component(dial) configure -max $time
2716	set delay [expr int(round(500.0/$speed))]
2717	set timePerStep [expr {double($time) / $delay}]
2718	set nSteps [expr {int(ceil($current/$timePerStep))}]
2719	EventuallyGoto $nSteps
2720	}
2721	"speed" {
2722	set speed [$itk_component(speed) value]
2723	set _flow(delay) [expr int(round(500.0/$speed))]
2724	}
2725	"duration" {
2726	set max [str2millisecs $_settings($this-duration)]
2727	if { $max < 0 } {
2728	bell
2729	return
2730	}
2731	set _flow(duration) $max
2732	set _settings($this-duration) [millisecs2str $max]
2733	$itk_component(dial) configure -max $max
2734	}
2735	"off" {
2736	set _flow(state) 0
2737	$_dispatcher cancel !play
2738	$itk_component(play) deselect
2739	}
2740	"on" {
2741	flow speed
2742	flow duration
2743	set _flow(state) 1
2744	set _settings($this-currenttime) 0
2745	$itk_component(play) select
2746	}
2747	"stop" {
2748	if { $_flow(state) } {
2749	flow off
2750	flow reset
2751	}
2752	}
2753	"pause" {
2754	if { $_flow(state) } {
2755	flow off
2756	}
2757	}
2758	"play" {
2759	# If the flow is currently off, then restart it.
2760	if { !$_flow(state) } {
2761	flow on
2762	# If we're at the end of the flow, reset the flow.
2763	set _settings($this-currenttime) \
2764	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2765	if { $_settings($this-currenttime) >= $_flow(duration) } {
2766	set _settings($this-step) 1
2767	SendCmd "flow reset"
2768	}
2769	flow next
2770	}
2771	}
2772	"toggle" {
2773	if { $_settings($this-play) } {
2774	flow play
2775	} else {
2776	flow pause
2777	}
2778	}
2779	"reset" {
2780	set _settings($this-currenttime) 0
2781	SendCmd "flow reset"
2782	}
2783	"next" {
2784	if { ![winfo viewable $itk_component(3dview)] } {
2785	flow stop
2786	return
2787	}
2788	set _settings($this-currenttime) \
2789	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2790	if { $_settings($this-currenttime) >= $_flow(duration) } {
2791	if { !$_settings($this-loop) } {
2792	flow off
2793	return
2794	}
2795	flow reset
2796	} else {
2797	SendCmd "flow next"
2798	}
2799	$_dispatcher event -after $_flow(delay) !play
2800	}
2801	default {
2802	error "bad option \"$option\": should be play, stop, toggle, or reset."
2803	}
2804	}
2805	}
2806
2807	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2808	switch -- $option {
2809	"start" {
2810	$_dispatcher dispatch $this !waiticon \
2811	"[itcl::code $this WaitIcon "next" $widget] ; list"
2812	set _icon 0
2813	$widget configure -image [Rappture::icon bigroller${_icon}]
2814	$_dispatcher event -after 100 !waiticon
2815	}
2816	"next" {
2817	incr _icon
2818	if { $_icon >= 8 } {
2819	set _icon 0
2820	}
2821	$widget configure -image [Rappture::icon bigroller${_icon}]
2822	$_dispatcher event -after 100 !waiticon
2823	}
2824	"stop" {
2825	$_dispatcher cancel !waiticon
2826	}
2827	}
2828	}
2829
2830	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2831	set token "print[incr _nextToken]"
2832	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2833	set $var ""
2834
2835	# Setup an automatic timeout procedure.
2836	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2837
2838	set popup .flowvisviewerprint
2839	if {![winfo exists $popup]} {
2840	Rappture::Balloon $popup -title "Generating file..."
2841	set inner [$popup component inner]
2842	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2843	label $inner.please -text "This may take a minute." -font "Arial 10"
2844	label $inner.icon -image [Rappture::icon bigroller0]
2845	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2846	-command [list set $var ""]
2847	blt::table $inner \
2848	0,0 $inner.title -cspan 2 \
2849	1,0 $inner.please -anchor w \
2850	1,1 $inner.icon -anchor e \
2851	2,0 $inner.cancel -cspan 2
2852	blt::table configure $inner r0 -pady 4
2853	blt::table configure $inner r2 -pady 4
2854	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2855	} else {
2856	set inner [$popup component inner]
2857	}
2858
2859	$_dispatcher event -after 60000 !pngtimeout
2860	WaitIcon start $inner.icon
2861	grab set $inner
2862	focus $inner.cancel
2863
2864	SendCmd "print $token $width $height"
2865
2866	$popup activate $widget below
2867	update idletasks
2868	update
2869	# We wait here for either
2870	# 1) the png to be delivered or
2871	# 2) timeout or
2872	# 3) user cancels the operation.
2873	tkwait variable $var
2874
2875	# Clean up.
2876	$_dispatcher cancel !pngtimeout
2877	WaitIcon stop $inner.icon
2878	grab release $inner
2879	$popup deactivate
2880	update
2881
2882	if { $_hardcopy($this-$token) != "" } {
2883	return [list .png $_hardcopy($this-$token)]
2884	}
2885	return ""
2886	}
2887
2888	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2889	set token "movie[incr _nextToken]"
2890	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2891	set $var ""
2892
2893	# Setup an automatic timeout procedure.
2894	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2895	set popup .flowvisviewermovie
2896	if {![winfo exists $popup]} {
2897	Rappture::Balloon $popup -title "Generating movie..."
2898	set inner [$popup component inner]
2899	label $inner.title -text "Generating movie for download" \
2900	-font "Arial 10 bold"
2901	label $inner.please -text "This may take a few minutes." \
2902	-font "Arial 10"
2903	label $inner.icon -image [Rappture::icon bigroller0]
2904	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2905	-command [list set $var ""]
2906	blt::table $inner \
2907	0,0 $inner.title -cspan 2 \
2908	1,0 $inner.please -anchor w \
2909	1,1 $inner.icon -anchor e \
2910	2,0 $inner.cancel -cspan 2
2911	blt::table configure $inner r0 -pady 4
2912	blt::table configure $inner r2 -pady 4
2913	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2914	} else {
2915	set inner [$popup component inner]
2916	}
2917	update
2918	# Timeout is set to 10 minutes.
2919	$_dispatcher event -after 600000 !movietimeout
2920	WaitIcon start $inner.icon
2921	grab set $inner
2922	focus $inner.cancel
2923
2924	flow duration
2925	flow speed
2926	set nframes [expr round($_flow(duration) / $_flow(delay))]
2927	set framerate [expr 1000.0 / $_flow(delay)]
2928
2929	# These are specific to MPEG1 video generation
2930	set framerate 25.0
2931	set bitrate 6.0e+6
2932
2933	set start [clock seconds]
2934	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2935
2936	$popup activate $widget below
2937	update idletasks
2938	update
2939	# We wait here until
2940	# 1. the movie is delivered or
2941	# 2. we've timed out or
2942	# 3. the user has canceled the operation.b
2943	tkwait variable $var
2944
2945	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2946
2947	# Clean up.
2948	$_dispatcher cancel !movietimeout
2949	WaitIcon stop $inner.icon
2950	grab release $inner
2951	$popup deactivate
2952	destroy $popup
2953	update
2954
2955	# This will both cancel the movie generation (if it hasn't already
2956	# completed) and reset the flow.
2957	SendCmd "flow reset"
2958	if { $_hardcopy($this-$token) != "" } {
2959	return [list .mpg $_hardcopy($this-$token)]
2960	}
2961	return ""
2962	}
2963
2964	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2965	set parts [split $value :]
2966	set secs 0
2967	set mins 0
2968	if { [llength $parts] == 1 } {
2969	scan [lindex $parts 0] "%d" secs
2970	} else {
2971	scan [lindex $parts 1] "%d" secs
2972	scan [lindex $parts 0] "%d" mins
2973	}
2974	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
2975	if { $ms > 600000.0 } {
2976	set ms 600000.0
2977	}
2978	if { $ms == 0.0 } {
2979	set ms 60000.0
2980	}
2981	return $ms
2982	}
2983
2984	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
2985	set min [expr floor($value / 60000.0)]
2986	set sec [expr ($value - ($min*60000.0)) / 1000.0]
2987	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
2988	}
2989
2990	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
2991	array set positions {
2992	front "1 0 0 0"
2993	back "0 0 1 0"
2994	left "0.707107 0 -0.707107 0"
2995	right "0.707107 0 0.707107 0"
2996	top "0.707107 -0.707107 0 0"
2997	bottom "0.707107 0.707107 0 0"
2998	}
2999	foreach name { qw qx qy qz } value $positions($side) {
3000	set _view($name) $value
3001	}
3002	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3003	$_arcball quaternion $q
3004	SendCmd "camera orient $q"
3005	SendCmd "camera reset"
3006	set _view(xpan) 0.0
3007	set _view(ypan) 0.0
3008	set _view(zoom) 1.0
3009	set _settings($this-xpan) $_view(xpan)
3010	set _settings($this-ypan) $_view(ypan)
3011	set _settings($this-zoom) $_view(zoom)
3012	}
3013
3014	# Reset global settings from dataset's settings.
3015	itcl::body Rappture::FlowvisViewer::BuildVolumeComponents {} {
3016	$itk_component(volcomponents) choices delete 0 end
3017	foreach name $_componentsList {
3018	$itk_component(volcomponents) choices insert end $name $name
3019	}
3020	set _current [lindex $_componentsList 0]
3021	$itk_component(volcomponents) value $_current
3022	}
3023
3024	# Reset global settings from dataset's settings.
3025	itcl::body Rappture::FlowvisViewer::GetDatasetsWithComponent { cname } {
3026	if { ![info exists _volcomponents($cname)] } {
3027	return ""
3028	}
3029	set list ""
3030	foreach tag $_volcomponents($cname) {
3031	if { ![info exists _serverObjs($tag)] } {
3032	continue
3033	}
3034	lappend list $tag
3035	}
3036	return $list
3037	}

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