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source: branches/1.3/gui/scripts/flowvisviewer.tcl @ 5110

Last change on this file since 5110 was 5110, checked in by ldelgass, 9 years ago
merge r5092:r5097 from trunk (includes fix for viewer initial canvas size)
File size: 104.4 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	#
6	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7	# It connects to the Flowvis server running on a rendering farm, transmits
8	# data, and displays the results.
9	#
10	# ======================================================================
11	# AUTHOR: Michael McLennan, Purdue University
12	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
13	#
14	# See the file "license.terms" for information on usage and redistribution of
15	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16	# ======================================================================
17	package require Itk
18	package require BLT
19	package require Img
20
21	option add *FlowvisViewer.width 5i widgetDefault
22	option add FlowvisViewercursor crosshair widgetDefault
23	option add *FlowvisViewer.height 4i widgetDefault
24	option add *FlowvisViewer.foreground black widgetDefault
25	option add *FlowvisViewer.controlBackground gray widgetDefault
26	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27	option add *FlowvisViewer.plotBackground black widgetDefault
28	option add *FlowvisViewer.plotForeground white widgetDefault
29	option add *FlowvisViewer.plotOutline gray widgetDefault
30	option add *FlowvisViewer.font \
31	--helvetica-medium-r-normal--12-* widgetDefault
32
33	# must use this name -- plugs into Rappture::resources::load
34	proc FlowvisViewer_init_resources {} {
35	Rappture::resources::register \
36	nanovis_server Rappture::FlowvisViewer::SetServerList
37	}
38
39	itcl::class Rappture::FlowvisViewer {
40	inherit Rappture::VisViewer
41
42	itk_option define -plotforeground plotForeground Foreground ""
43	itk_option define -plotbackground plotBackground Background ""
44	itk_option define -plotoutline plotOutline PlotOutline ""
45
46	constructor { hostlist args } {
47	Rappture::VisViewer::constructor $hostlist
48	} {
49	# defined below
50	}
51	destructor {
52	# defined below
53	}
54	public proc SetServerList { namelist } {
55	Rappture::VisViewer::SetServerList "nanovis" $namelist
56	}
57	public method add {dataobj {settings ""}}
58	public method camera {option args}
59	public method delete {args}
60	public method disconnect {}
61	public method download {option args}
62	public method flow {option}
63	public method get {args}
64	public method isconnected {}
65	public method limits { tf }
66	public method overmarker { m x }
67	public method parameters {title args} {
68	# do nothing
69	}
70	public method rmdupmarker { m x }
71	public method scale {args}
72	public method updatetransferfuncs {}
73
74	protected method Connect {}
75	protected method CurrentVolumeIds {{what -all}}
76	protected method Disconnect {}
77	protected method Resize {}
78	protected method ResizeLegend {}
79	protected method AdjustSetting {what {value ""}}
80	protected method InitSettings { args }
81	protected method Pan {option x y}
82	protected method Rebuild {}
83	protected method ReceiveData { args }
84	protected method ReceiveImage { args }
85	protected method ReceiveLegend { tf vmin vmax size }
86	protected method Rotate {option x y}
87	protected method SendDataObjs {}
88	protected method SendTransferFuncs {}
89	protected method Slice {option args}
90	protected method SlicerTip {axis}
91	protected method Zoom {option}
92
93	# soon to be removed.
94	protected method Flow {option args}
95	protected method Play {}
96	protected method Pause {}
97
98
99	# The following methods are only used by this class.
100
101	private method AddIsoMarker { x y }
102	private method BuildCameraTab {}
103	private method BuildCutplanesTab {}
104	private method BuildViewTab {}
105	private method BuildVolumeTab {}
106	private method ComputeTransferFunc { tf }
107	private method EventuallyResize { w h }
108	private method EventuallyGoto { nSteps }
109	private method EventuallyResizeLegend { }
110	private method FlowCmd { dataobj comp nbytes extents }
111	private method GetMovie { widget width height }
112	private method GetPngImage { widget width height }
113	private method NameTransferFunc { dataobj comp }
114	private method PanCamera {}
115	private method ParseLevelsOption { tf levels }
116	private method ParseMarkersOption { tf markers }
117	private method WaitIcon { option widget }
118	private method str2millisecs { value }
119	private method millisecs2str { value }
120	private method GetFlowInfo { widget }
121	private method particles { tag name }
122	private method box { tag name }
123	private method streams { tag name }
124	private method arrows { tag name }
125	private method SetOrientation { side }
126
127	private variable _arcball ""
128	private variable _dlist "" ;# list of data objects
129	private variable _allDataObjs
130	private variable _obj2ovride ;# maps dataobj => style override
131	private variable _serverObjs ;# maps dataobj-component to volume ID
132	# in the server
133	private variable _sendobjs "" ;# list of data objs to send to server
134	private variable _recvObjs ;# list of data objs to send to server
135	private variable _obj2style ;# maps dataobj-component to transfunc
136	private variable _style2objs ;# maps tf back to list of
137	# dataobj-components using the tf.
138	private variable _obj2flow; # Maps dataobj-component to a flow.
139
140	private variable _reset 1; # Connection to server has been reset
141	private variable _click ;# info used for rotate operations
142	private variable _limits ;# autoscale min/max for all axes
143	private variable _view ;# view params for 3D view
144	private variable _isomarkers ;# array of isosurface level values 0..1
145	private common _settings
146	private variable _activeTf "" ;# The currently active transfer function.
147	private variable _first "" ;# This is the topmost volume.
148	private variable _nextToken 0
149	private variable _icon 0
150	private variable _flow
151	# This
152	# indicates which isomarkers and transfer
153	# function to use when changing markers,
154	# opacity, or thickness.
155	private common _downloadPopup ;# download options from popup
156
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _resizeLegendPending 0
162	private variable _gotoPending 0
163	}
164
165	itk::usual FlowvisViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
174	set _serverType "nanovis"
175
176	# Draw legend event
177	$_dispatcher register !legend
178	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
179
180	# Send dataobjs event
181	$_dispatcher register !send_dataobjs
182	$_dispatcher dispatch $this !send_dataobjs \
183	"[itcl::code $this SendDataObjs]; list"
184
185	# Send transferfunctions event
186	$_dispatcher register !send_transfunc
187	$_dispatcher dispatch $this !send_transfunc \
188	"[itcl::code $this SendTransferFuncs]; list"
189
190	# Rebuild event.
191	$_dispatcher register !rebuild
192	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
193
194	# Resize event.
195	$_dispatcher register !resize
196	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
197
198	$_dispatcher register !play
199	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
200
201	# Draw legend event
202	$_dispatcher register !goto
203	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
204
205	$_dispatcher register !movietimeout
206	$_dispatcher register !waiticon
207
208	set _flow(state) 0
209
210	array set _downloadPopup {
211	format draft
212	}
213	#
214	# Populate parser with commands handle incoming requests
215	#
216	$_parser alias image [itcl::code $this ReceiveImage]
217	$_parser alias legend [itcl::code $this ReceiveLegend]
218	$_parser alias data [itcl::code $this ReceiveData]
219
220	# Initialize the view to some default parameters.
221	array set _view {
222	qw 0.853553
223	qx -0.353553
224	qy 0.353553
225	qz 0.146447
226	zoom 1.0
227	xpan 0
228	ypan 0
229	}
230	set _arcball [blt::arcball create 100 100]
231	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
232	$_arcball quaternion $q
233
234	set _limits(vmin) 0.0
235	set _limits(vmax) 1.0
236	set _reset 1
237
238	array set _settings [subst {
239	$this-qw $_view(qw)
240	$this-qx $_view(qx)
241	$this-qy $_view(qy)
242	$this-qz $_view(qz)
243	$this-zoom $_view(zoom)
244	$this-xpan $_view(xpan)
245	$this-ypan $_view(ypan)
246	$this-arrows 0
247	$this-currenttime 0
248	$this-duration 1:00
249	$this-loop 0
250	$this-play 0
251	$this-speed 500
252	$this-step 0
253	$this-streams 0
254	$this-volume 1
255	$this-xcutplane 0
256	$this-xcutposition 0
257	$this-ycutplane 0
258	$this-ycutposition 0
259	$this-zcutplane 0
260	$this-zcutposition 0
261	}]
262
263	itk_component add 3dview {
264	label $itk_component(plotarea).view -image $_image(plot) \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
271
272	set f [$itk_component(main) component controls]
273	itk_component add reset {
274	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
275	-highlightthickness 0 \
276	-image [Rappture::icon reset-view] \
277	-command [itcl::code $this Zoom reset]
278	} {
279	usual
280	ignore -highlightthickness
281	}
282	pack $itk_component(reset) -side top -padx 2 -pady 2
283	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
284
285	itk_component add zoomin {
286	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon zoom-in] \
289	-command [itcl::code $this Zoom in]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(zoomin) -side top -padx 2 -pady 2
295	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
296
297	itk_component add zoomout {
298	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-out] \
301	-command [itcl::code $this Zoom out]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomout) -side top -padx 2 -pady 2
307	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
308
309	itk_component add volume {
310	Rappture::PushButton $f.volume \
311	-onimage [Rappture::icon volume-on] \
312	-offimage [Rappture::icon volume-off] \
313	-command [itcl::code $this AdjustSetting volume] \
314	-variable [itcl::scope _settings($this-volume)]
315	}
316	$itk_component(volume) select
317	Rappture::Tooltip::for $itk_component(volume) \
318	"Toggle the volume cloud on/off"
319	pack $itk_component(volume) -padx 2 -pady 2
320
321	if { [catch {
322	BuildViewTab
323	BuildVolumeTab
324	BuildCutplanesTab
325	BuildCameraTab
326	} errs] != 0 } {
327	global errorInfo
328	puts stderr "errs=$errs errorInfo=$errorInfo"
329	}
330
331	bind $itk_component(3dview) <Configure> \
332	[itcl::code $this EventuallyResize %w %h]
333
334	# Legend
335	set _image(legend) [image create photo]
336	itk_component add legend {
337	canvas $itk_component(plotarea).legend \
338	-height 50 -highlightthickness 0 -background black
339	} {
340	usual
341	ignore -highlightthickness
342	rename -background -plotbackground plotBackground Background
343	}
344	bind $itk_component(legend) <Configure> \
345	[itcl::code $this EventuallyResizeLegend]
346
347	# Hack around the Tk panewindow. The problem is that the requested
348	# size of the 3d view isn't set until an image is retrieved from
349	# the server. So the panewindow uses the tiny size.
350	set w 10000
351	pack forget $itk_component(3dview)
352	blt::table $itk_component(plotarea) \
353	0,0 $itk_component(3dview) -fill both -reqwidth $w \
354	1,0 $itk_component(legend) -fill x
355	blt::table configure $itk_component(plotarea) r1 -resize none
356	# Create flow controls...
357
358	itk_component add flowcontrols {
359	frame $itk_interior.flowcontrols
360	} {
361	usual
362	rename -background -controlbackground controlBackground Background
363	}
364	pack forget $itk_component(main)
365	blt::table $itk_interior \
366	0,0 $itk_component(main) -fill both \
367	1,0 $itk_component(flowcontrols) -fill x
368	blt::table configure $itk_interior r1 -resize none
369
370	# Rewind
371	itk_component add rewind {
372	button $itk_component(flowcontrols).reset \
373	-borderwidth 1 -padx 1 -pady 1 \
374	-image [Rappture::icon flow-rewind] \
375	-command [itcl::code $this flow reset]
376	} {
377	usual
378	ignore -borderwidth
379	rename -highlightbackground -controlbackground controlBackground \
380	Background
381	}
382	Rappture::Tooltip::for $itk_component(rewind) \
383	"Rewind flow"
384
385	# Stop
386	itk_component add stop {
387	button $itk_component(flowcontrols).stop \
388	-borderwidth 1 -padx 1 -pady 1 \
389	-image [Rappture::icon flow-stop] \
390	-command [itcl::code $this flow stop]
391	} {
392	usual
393	ignore -borderwidth
394	rename -highlightbackground -controlbackground controlBackground \
395	Background
396	}
397	Rappture::Tooltip::for $itk_component(stop) \
398	"Stop flow"
399
400	# Play
401	itk_component add play {
402	Rappture::PushButton $itk_component(flowcontrols).play \
403	-onimage [Rappture::icon flow-pause] \
404	-offimage [Rappture::icon flow-play] \
405	-variable [itcl::scope _settings($this-play)] \
406	-command [itcl::code $this flow toggle]
407	}
408	set fg [option get $itk_component(hull) font Font]
409	Rappture::Tooltip::for $itk_component(play) \
410	"Play/Pause flow"
411
412	# Loop
413	itk_component add loop {
414	Rappture::PushButton $itk_component(flowcontrols).loop \
415	-onimage [Rappture::icon flow-loop] \
416	-offimage [Rappture::icon flow-loop] \
417	-variable [itcl::scope _settings($this-loop)]
418	}
419	Rappture::Tooltip::for $itk_component(loop) \
420	"Play continuously"
421
422	itk_component add dial {
423	Rappture::Flowdial $itk_component(flowcontrols).dial \
424	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
425	-linecolor "" -activelinecolor "" \
426	-min 0.0 -max 1.0 \
427	-variable [itcl::scope _settings($this-currenttime)] \
428	-knobimage [Rappture::icon knob2] -knobposition center@middle
429	} {
430	usual
431	ignore -dialprogresscolor
432	rename -background -controlbackground controlBackground Background
433	}
434	$itk_component(dial) current 0.0
435	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
436	# Duration
437	itk_component add duration {
438	entry $itk_component(flowcontrols).duration \
439	-textvariable [itcl::scope _settings($this-duration)] \
440	-bg white -width 6 -font "arial 9"
441	} {
442	usual
443	ignore -highlightthickness -background
444	}
445	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
446	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
447	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
448	Rappture::Tooltip::for $itk_component(duration) \
449	"Set duration of flow (format is min:sec)"
450
451
452	itk_component add durationlabel {
453	label $itk_component(flowcontrols).durationl \
454	-text "Duration:" -font $fg \
455	-highlightthickness 0
456	} {
457	usual
458	ignore -highlightthickness
459	rename -background -controlbackground controlBackground Background
460	}
461
462	itk_component add speedlabel {
463	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
464	-highlightthickness 0
465	} {
466	usual
467	ignore -highlightthickness
468	rename -background -controlbackground controlBackground Background
469	}
470
471	# Speed
472	itk_component add speed {
473	Rappture::Flowspeed $itk_component(flowcontrols).speed \
474	-min 1 -max 10 -width 3 -font "arial 9"
475	} {
476	usual
477	ignore -highlightthickness
478	rename -background -controlbackground controlBackground Background
479	}
480	Rappture::Tooltip::for $itk_component(speed) \
481	"Change speed of flow"
482
483	$itk_component(speed) value 1
484	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
485
486
487	blt::table $itk_component(flowcontrols) \
488	0,0 $itk_component(rewind) -padx {3 0} \
489	0,1 $itk_component(stop) -padx {2 0} \
490	0,2 $itk_component(play) -padx {2 0} \
491	0,3 $itk_component(loop) -padx {2 0} \
492	0,4 $itk_component(dial) -fill x -padx {2 0 } \
493	0,5 $itk_component(duration) -padx { 0 0} \
494	0,7 $itk_component(speed) -padx {2 3}
495
496	# 0,6 $itk_component(speedlabel) -padx {2 0}
497	blt::table configure $itk_component(flowcontrols) c* -resize none
498	blt::table configure $itk_component(flowcontrols) c4 -resize both
499	blt::table configure $itk_component(flowcontrols) r0 -pady 1
500	# Bindings for rotation via mouse
501	bind $itk_component(3dview) <ButtonPress-1> \
502	[itcl::code $this Rotate click %x %y]
503	bind $itk_component(3dview) <B1-Motion> \
504	[itcl::code $this Rotate drag %x %y]
505	bind $itk_component(3dview) <ButtonRelease-1> \
506	[itcl::code $this Rotate release %x %y]
507
508	bind $itk_component(3dview) <Configure> \
509	[itcl::code $this EventuallyResize %w %h]
510
511	# Bindings for panning via mouse
512	bind $itk_component(3dview) <ButtonPress-2> \
513	[itcl::code $this Pan click %x %y]
514	bind $itk_component(3dview) <B2-Motion> \
515	[itcl::code $this Pan drag %x %y]
516	bind $itk_component(3dview) <ButtonRelease-2> \
517	[itcl::code $this Pan release %x %y]
518
519	# Bindings for panning via keyboard
520	bind $itk_component(3dview) <KeyPress-Left> \
521	[itcl::code $this Pan set -10 0]
522	bind $itk_component(3dview) <KeyPress-Right> \
523	[itcl::code $this Pan set 10 0]
524	bind $itk_component(3dview) <KeyPress-Up> \
525	[itcl::code $this Pan set 0 -10]
526	bind $itk_component(3dview) <KeyPress-Down> \
527	[itcl::code $this Pan set 0 10]
528	bind $itk_component(3dview) <Shift-KeyPress-Left> \
529	[itcl::code $this Pan set -2 0]
530	bind $itk_component(3dview) <Shift-KeyPress-Right> \
531	[itcl::code $this Pan set 2 0]
532	bind $itk_component(3dview) <Shift-KeyPress-Up> \
533	[itcl::code $this Pan set 0 -2]
534	bind $itk_component(3dview) <Shift-KeyPress-Down> \
535	[itcl::code $this Pan set 0 2]
536
537	# Bindings for zoom via keyboard
538	bind $itk_component(3dview) <KeyPress-Prior> \
539	[itcl::code $this Zoom out]
540	bind $itk_component(3dview) <KeyPress-Next> \
541	[itcl::code $this Zoom in]
542
543	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
544
545	if {[string equal "x11" [tk windowingsystem]]} {
546	# Bindings for zoom via mouse
547	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
548	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
549	}
550
551	set _image(download) [image create photo]
552
553	eval itk_initialize $args
554
555	EnableWaitDialog 900
556	Connect
557	}
558
559	# ----------------------------------------------------------------------
560	# DESTRUCTOR
561	# ----------------------------------------------------------------------
562	itcl::body Rappture::FlowvisViewer::destructor {} {
563	set _sendobjs "" ;# stop any send in progress
564	$_dispatcher cancel !rebuild
565	$_dispatcher cancel !send_dataobjs
566	$_dispatcher cancel !send_transfunc
567	image delete $_image(plot)
568	image delete $_image(legend)
569	image delete $_image(download)
570	catch { blt::arcball destroy $_arcball }
571	array unset _settings $this-*
572	}
573
574	# ----------------------------------------------------------------------
575	# USAGE: add <dataobj> ?<settings>?
576	#
577	# Clients use this to add a data object to the plot. The optional
578	# <settings> are used to configure the plot. Allowed settings are
579	# -color, -brightness, -width, -linestyle, and -raise.
580	# ----------------------------------------------------------------------
581	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
582	array set params {
583	-color auto
584	-width 1
585	-linestyle solid
586	-brightness 0
587	-raise 0
588	-description ""
589	-param ""
590	}
591	array set params $settings
592	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
593	# can't handle -autocolors yet
594	set params(-color) black
595	}
596	foreach comp [$dataobj components] {
597	set flowobj [$dataobj flowhints $comp]
598	if { $flowobj == "" } {
599	puts stderr "no flowhints $dataobj-$comp"
600	continue
601	}
602	set _obj2flow($dataobj-$comp) $flowobj
603	}
604	set pos [lsearch -exact $_dlist $dataobj]
605	if {$pos < 0} {
606	lappend _dlist $dataobj
607	set _allDataObjs($dataobj) 1
608	set _obj2ovride($dataobj-color) $params(-color)
609	set _obj2ovride($dataobj-width) $params(-width)
610	set _obj2ovride($dataobj-raise) $params(-raise)
611	$_dispatcher event -idle !rebuild
612	}
613	}
614
615	# ----------------------------------------------------------------------
616	# USAGE: get ?-objects?
617	# USAGE: get ?-image 3dview\|legend?
618	#
619	# Clients use this to query the list of objects being plotted, in
620	# order from bottom to top of this result. The optional "-image"
621	# flag can also request the internal images being shown.
622	# ----------------------------------------------------------------------
623	itcl::body Rappture::FlowvisViewer::get {args} {
624	if {[llength $args] == 0} {
625	set args "-objects"
626	}
627
628	set op [lindex $args 0]
629	switch -- $op {
630	-objects {
631	# put the dataobj list in order according to -raise options
632	set dlist $_dlist
633	foreach obj $dlist {
634	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
635	set i [lsearch -exact $dlist $obj]
636	if {$i >= 0} {
637	set dlist [lreplace $dlist $i $i]
638	lappend dlist $obj
639	}
640	}
641	}
642	return $dlist
643	}
644	-image {
645	if {[llength $args] != 2} {
646	error "wrong # args: should be \"get -image 3dview\|legend\""
647	}
648	switch -- [lindex $args end] {
649	3dview {
650	return $_image(plot)
651	}
652	legend {
653	return $_image(legend)
654	}
655	default {
656	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
657	}
658	}
659	}
660	default {
661	error "bad option \"$op\": should be -objects or -image"
662	}
663	}
664	}
665
666	# ----------------------------------------------------------------------
667	# USAGE: delete ?<dataobj1> <dataobj2> ...?
668	#
669	# Clients use this to delete a dataobj from the plot. If no dataobjs
670	# are specified, then all dataobjs are deleted. No data objects are
671	# deleted. They are only removed from the display list.
672	#
673	# ----------------------------------------------------------------------
674	itcl::body Rappture::FlowvisViewer::delete {args} {
675	flow stop
676	if {[llength $args] == 0} {
677	set args $_dlist
678	}
679
680	# Delete all specified dataobjs
681	set changed 0
682	foreach dataobj $args {
683	set pos [lsearch -exact $_dlist $dataobj]
684	if { $pos >= 0 } {
685	foreach comp [$dataobj components] {
686	array unset _limits $dataobj-$comp-*
687	}
688	set _dlist [lreplace $_dlist $pos $pos]
689	array unset _obj2ovride $dataobj-*
690	array unset _obj2flow $dataobj-*
691	array unset _serverObjs $dataobj-*
692	array unset _obj2style $dataobj-*
693	set changed 1
694	}
695	}
696	# If anything changed, then rebuild the plot
697	if {$changed} {
698	# Repair the reverse lookup
699	foreach tf [array names _style2objs] {
700	set list {}
701	foreach {dataobj comp} $_style2objs($tf) break
702	if { [info exists _serverObjs($dataobj-$comp)] } {
703	lappend list $dataobj $comp
704	}
705	if { $list == "" } {
706	array unset _style2objs $tf
707	} else {
708	set _style2objs($tf) $list
709	}
710	}
711	$_dispatcher event -idle !rebuild
712	}
713	}
714
715	# ----------------------------------------------------------------------
716	# USAGE: scale ?<data1> <data2> ...?
717	#
718	# Sets the default limits for the overall plot according to the
719	# limits of the data for all of the given <data> objects. This
720	# accounts for all objects--even those not showing on the screen.
721	# Because of this, the limits are appropriate for all objects as
722	# the user scans through data in the ResultSet viewer.
723	# ----------------------------------------------------------------------
724	itcl::body Rappture::FlowvisViewer::scale {args} {
725	foreach val {xmin xmax ymin ymax vmin vmax} {
726	set _limits($val) ""
727	}
728	foreach obj $args {
729	foreach axis {x y v} {
730
731	foreach { min max } [$obj limits $axis] break
732
733	if {"" != $min && "" != $max} {
734	if {"" == $_limits(${axis}min)} {
735	set _limits(${axis}min) $min
736	set _limits(${axis}max) $max
737	} else {
738	if {$min < $_limits(${axis}min)} {
739	set _limits(${axis}min) $min
740	}
741	if {$max > $_limits(${axis}max)} {
742	set _limits(${axis}max) $max
743	}
744	}
745	}
746	}
747	}
748	}
749
750	# ----------------------------------------------------------------------
751	# USAGE: download coming
752	# USAGE: download controls <downloadCommand>
753	# USAGE: download now
754	#
755	# Clients use this method to create a downloadable representation
756	# of the plot. Returns a list of the form {ext string}, where
757	# "ext" is the file extension (indicating the type of data) and
758	# "string" is the data itself.
759	# ----------------------------------------------------------------------
760	itcl::body Rappture::FlowvisViewer::download {option args} {
761	set popup .flowvisviewerdownload
762	switch $option {
763	coming {
764	if {[catch {
765	blt::winop snap $itk_component(plotarea) $_image(download)
766	}]} {
767	$_image(download) configure -width 1 -height 1
768	$_image(download) put #000000
769	}
770	}
771	controls {
772	if {![winfo exists $popup]} {
773	# if we haven't created the popup yet, do it now
774	Rappture::Balloon $popup \
775	-title "[Rappture::filexfer::label downloadWord] as..."
776	set inner [$popup component inner]
777	label $inner.summary -text "" -anchor w
778	pack $inner.summary -side top
779	set img $_image(plot)
780	set res "[image width $img]x[image height $img]"
781	radiobutton $inner.draft -text "Image (draft $res)" \
782	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
783	-value draft
784	pack $inner.draft -anchor w
785
786	set res "640x480"
787	radiobutton $inner.medium -text "Movie (standard $res)" \
788	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
789	-value $res
790	pack $inner.medium -anchor w
791
792	set res "1024x768"
793	radiobutton $inner.high -text "Movie (high quality $res)" \
794	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
795	-value $res
796	pack $inner.high -anchor w
797	button $inner.go -text [Rappture::filexfer::label download] \
798	-command [lindex $args 0]
799	pack $inner.go -pady 4
800	$inner.draft select
801	} else {
802	set inner [$popup component inner]
803	}
804	set num [llength [get]]
805	set num [expr {($num == 1) ? "1 result" : "$num results"}]
806	set word [Rappture::filexfer::label downloadWord]
807	$inner.summary configure -text "$word $num in the following format:"
808	update idletasks ;# fix initial sizes
809	update
810	return $popup
811	}
812	now {
813	if { [winfo exists $popup] } {
814	$popup deactivate
815	}
816	switch -- $_downloadPopup(format) {
817	draft {
818	# Get the image data (as base64) and decode it back to
819	# binary. This is better than writing to temporary
820	# files. When we switch to the BLT picture image it
821	# won't be necessary to decode the image data.
822	set bytes [$_image(plot) data -format "jpeg -quality 100"]
823	set bytes [Rappture::encoding::decode -as b64 $bytes]
824	return [list .jpg $bytes]
825	}
826	"640x480" {
827	return [$this GetMovie [lindex $args 0] 640 480]
828	}
829	"1024x768" {
830	return [$this GetMovie [lindex $args 0] 1024 768]
831	}
832	default {
833	error "bad download format $_downloadPopup(format)"
834	}
835	}
836	}
837	default {
838	error "bad option \"$option\": should be coming, controls, now"
839	}
840	}
841	}
842
843	# ----------------------------------------------------------------------
844	# USAGE: Connect ?<host:port>,<host:port>...?
845	#
846	# Clients use this method to establish a connection to a new
847	# server, or to reestablish a connection to the previous server.
848	# Any existing connection is automatically closed.
849	# ----------------------------------------------------------------------
850	itcl::body Rappture::FlowvisViewer::Connect {} {
851	set _hosts [GetServerList "nanovis"]
852	if { "" == $_hosts } {
853	return 0
854	}
855	set _reset 1
856	set result [VisViewer::Connect $_hosts]
857	if { $result } {
858	if { $_reportClientInfo } {
859	# Tell the server the viewer, hub, user and session.
860	# Do this immediately on connect before buffing any commands
861	global env
862
863	set info {}
864	set user "???"
865	if { [info exists env(USER)] } {
866	set user $env(USER)
867	}
868	set session "???"
869	if { [info exists env(SESSION)] } {
870	set session $env(SESSION)
871	}
872	lappend info "version" "$Rappture::version"
873	lappend info "build" "$Rappture::build"
874	lappend info "svnurl" "$Rappture::svnurl"
875	lappend info "installdir" "$Rappture::installdir"
876	lappend info "hub" [exec hostname]
877	lappend info "client" "flowvisviewer"
878	lappend info "user" $user
879	lappend info "session" $session
880	SendCmd "clientinfo [list $info]"
881	}
882
883	set w [winfo width $itk_component(3dview)]
884	set h [winfo height $itk_component(3dview)]
885	EventuallyResize $w $h
886	}
887	return $result
888	}
889
890	#
891	# isconnected --
892	#
893	# Indicates if we are currently connected to the visualization server.
894	#
895	itcl::body Rappture::FlowvisViewer::isconnected {} {
896	return [VisViewer::IsConnected]
897	}
898
899	#
900	# disconnect --
901	#
902	itcl::body Rappture::FlowvisViewer::disconnect {} {
903	Disconnect
904	}
905
906	#
907	# Disconnect --
908	#
909	# Clients use this method to disconnect from the current rendering
910	# server.
911	#
912	itcl::body Rappture::FlowvisViewer::Disconnect {} {
913	VisViewer::Disconnect
914
915	# disconnected -- no more data sitting on server
916	array unset _serverObjs
917	set _sendobjs ""
918	}
919
920	# ----------------------------------------------------------------------
921	# USAGE: SendDataObjs
922	#
923	# Used internally to send a series of volume objects off to the
924	# server. Sends each object, a little at a time, with updates in
925	# between so the interface doesn't lock up.
926	# ----------------------------------------------------------------------
927	itcl::body Rappture::FlowvisViewer::SendDataObjs {} {
928	blt::busy hold $itk_component(hull)
929	foreach dataobj $_sendobjs {
930	foreach comp [$dataobj components] {
931	# Send the data as one huge base64-encoded mess -- yuck!
932	set data [$dataobj blob $comp]
933	set nbytes [string length $data]
934	set extents [$dataobj extents $comp]
935
936	# I have a field. Is a vector field or a volume field?
937	if { $extents == 1 } {
938	set cmd "volume data follows $nbytes $dataobj-$comp\n"
939	} else {
940	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
941	if { $cmd == "" } {
942	puts stderr "no command"
943	continue
944	}
945	}
946	f { ![SendBytes $cmd] } {
947	puts stderr "can't send"
948	return
949	}
950	if { ![SendBytes $data] } {
951	puts stderr "can't send"
952	return
953	}
954	NameTransferFunc $dataobj $comp
955	set _recvObjs($dataobj-$comp) 1
956	}
957	}
958	set _sendobjs ""
959	blt::busy release $itk_component(hull)
960
961	# Turn on buffering of commands to the server. We don't want to
962	# be preempted by a server disconnect/reconnect (which automatically
963	# generates a new call to Rebuild).
964	StartBufferingCommands
965
966	# activate the proper volume
967	set _first [lindex [get] 0]
968	if { "" != $_first } {
969	set axis [$_first hints updir]
970	if {"" != $axis} {
971	SendCmd "up $axis"
972	}
973
974	if 0 {
975	set location [$_first hints camera]
976	if { $location != "" } {
977	array set _view $location
978	}
979	set _settings($this-qw) $_view(qw)
980	set _settings($this-qx) $_view(qx)
981	set _settings($this-qy) $_view(qy)
982	set _settings($this-qz) $_view(qz)
983	set _settings($this-xpan) $_view(xpan)
984	set _settings($this-ypan) $_view(ypan)
985	set _settings($this-zoom) $_view(zoom)
986	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
987	$_arcball quaternion $q
988	SendCmd "camera orient $q"
989	SendCmd "camera reset"
990	PanCamera
991	SendCmd "camera zoom $_view(zoom)"
992	}
993	# The active transfer function is by default the first component of
994	# the first data object. This assumes that the data is always
995	# successfully transferred.
996	set comp [lindex [$_first components] 0]
997	set _activeTf [lindex $_obj2style($_first-$comp) 0]
998	}
999
1000	SendCmd "flow reset"
1001	StopBufferingCommands
1002	}
1003
1004	# ----------------------------------------------------------------------
1005	# USAGE: SendTransferFuncs
1006	# ----------------------------------------------------------------------
1007	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
1008	if { $_activeTf == "" } {
1009	puts stderr "no active tf"
1010	return
1011	}
1012	set tf $_activeTf
1013	if { $_first == "" } {
1014	puts stderr "no first"
1015	return
1016	}
1017
1018	# Ensure that the global opacity and thickness settings (in the slider
1019	# settings widgets) are used for the active transfer-function. Update the
1020	# values in the _settings varible.
1021	set value $_settings($this-opacity)
1022	set opacity [expr { double($value) * 0.01 }]
1023	set _settings($this-$tf-opacity) $opacity
1024	set value $_settings($this-thickness)
1025	# Scale values between 0.00001 and 0.01000
1026	set thickness [expr {double($value) * 0.0001}]
1027	set _settings($this-$tf-thickness) $thickness
1028
1029	foreach key [array names _obj2style $_first-*] {
1030	if { [info exists _obj2style($key)] } {
1031	foreach tf $_obj2style($key) {
1032	ComputeTransferFunc $tf
1033	}
1034	}
1035	}
1036	EventuallyResizeLegend
1037	}
1038
1039	# ----------------------------------------------------------------------
1040	# USAGE: ReceiveImage -bytes $size -type $type -token $token
1041	#
1042	# Invoked automatically whenever the "image" command comes in from
1043	# the rendering server. Indicates that binary image data with the
1044	# specified <size> will follow.
1045	# ----------------------------------------------------------------------
1046	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
1047	array set info {
1048	-token "???"
1049	-bytes 0
1050	-type image
1051	}
1052	array set info $args
1053	set bytes [ReceiveBytes $info(-bytes)]
1054	ReceiveEcho <<line "<read $info(-bytes) bytes"
1055	switch -- $info(-type) {
1056	"image" {
1057	$_image(plot) configure -data $bytes
1058	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1059	}
1060	"print" {
1061	set tag $this-$info(-token)
1062	set _hardcopy($tag) $bytes
1063	}
1064	"movie" {
1065	set tag $this-$info(-token)
1066	set _hardcopy($tag) $bytes
1067	}
1068	default {
1069	puts stderr "unknown download type $info(-type)"
1070	}
1071	}
1072	}
1073
1074	#
1075	# ReceiveLegend --
1076	#
1077	# The procedure is the response from the render server to each "legend"
1078	# command. The server sends back a "legend" command invoked our
1079	# the slave interpreter. The purpose is to collect data of the image
1080	# representing the legend in the canvas. In addition, the isomarkers
1081	# of the active transfer function are displayed.
1082	#
1083	# I don't know is this is the right place to display the isomarkers.
1084	# I don't know all the different paths used to draw the plot. There's
1085	# "Rebuild", "add", etc.
1086	#
1087	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1088	if { ![isconnected] } {
1089	return
1090	}
1091	#puts stderr "receive legend $tag $vmin $vmax $size"
1092	set bytes [ReceiveBytes $size]
1093	$_image(legend) configure -data $bytes
1094	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1095
1096	set c $itk_component(legend)
1097	set w [winfo width $c]
1098	set h [winfo height $c]
1099	set lx 10
1100	# FIXME: I don't know what I have to do this for the 2D flow
1101	# example. Otherwise the canvas background is white.
1102	# I'll get to this when we add background changes into
1103	# nanvis.
1104	$c configure -background black
1105	set ly [expr {$h - 1}]
1106	if {"" == [$c find withtag transfunc]} {
1107	$c create image 10 10 -anchor nw \
1108	-image $_image(legend) -tags transfunc
1109	$c create text $lx $ly -anchor sw \
1110	-fill $itk_option(-plotforeground) -tags "limits vmin"
1111	$c create text [expr {$w-$lx}] $ly -anchor se \
1112	-fill $itk_option(-plotforeground) -tags "limits vmax"
1113	$c lower transfunc
1114	$c bind transfunc <ButtonRelease-1> \
1115	[itcl::code $this AddIsoMarker %x %y]
1116	}
1117	# Display the markers used by the active transfer function.
1118	set tf $_obj2style($tag)
1119	array set limits [limits $tf]
1120	$c itemconfigure vmin -text [format %.2g $limits(vmin)]
1121	$c coords vmin $lx $ly
1122
1123	$c itemconfigure vmax -text [format %.2g $limits(vmax)]
1124	$c coords vmax [expr {$w-$lx}] $ly
1125
1126	if { [info exists _isomarkers($tf)] } {
1127	foreach m $_isomarkers($tf) {
1128	$m visible yes
1129	}
1130	}
1131	}
1132
1133	#
1134	# ReceiveData --
1135	#
1136	# The procedure is the response from the render server to each "data
1137	# follows" command. The server sends back a "data" command invoked our
1138	# the slave interpreter. The purpose is to collect the min/max of the
1139	# volume sent to the render server. Since the client (flowvisviewer)
1140	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1141	# tell us what the limits are. Once we've received the limits to all
1142	# the data we've sent (tracked by _recvObjs) we can then determine
1143	# what the transfer functions are for these # volumes.
1144	#
1145	# Note: There is a considerable tradeoff in having the server report
1146	# back what the data limits are. It means that much of the code
1147	# having to do with transfer-functions has to wait for the data
1148	# to come back, since the isomarkers are calculated based upon
1149	# the data limits. The client code is much messier because of
1150	# this. The alternative is to parse any of the 3D formats on the
1151	# client side.
1152	#
1153	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1154	if { ![isconnected] } {
1155	return
1156	}
1157	# Arguments from server are name value pairs. Stuff them in an array.
1158	array set values $args
1159	set tag $values(tag)
1160	set parts [split $tag -]
1161	set dataobj [lindex $parts 0]
1162	set _serverObjs($tag) 0
1163	set _limits($tag-min) $values(min); # Minimum value of the volume.
1164	set _limits($tag-max) $values(max); # Maximum value of the volume.
1165	unset _recvObjs($tag)
1166	if { [array size _recvObjs] == 0 } {
1167	updatetransferfuncs
1168	}
1169	}
1170
1171	#
1172	# Rebuild --
1173	#
1174	# Called automatically whenever something changes that affects the data
1175	# in the widget. Clears any existing data and rebuilds the widget to
1176	# display new data.
1177	#
1178	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1179	set w [winfo width $itk_component(3dview)]
1180	set h [winfo height $itk_component(3dview)]
1181	if { $w < 2 \|\| $h < 2 } {
1182	update
1183	$_dispatcher event -idle !rebuild
1184	return
1185	}
1186
1187	# Turn on buffering of commands to the server. We don't want to
1188	# be preempted by a server disconnect/reconnect (which automatically
1189	# generates a new call to Rebuild).
1190	StartBufferingCommands
1191
1192	# Hide all the isomarkers. Can't remove them. Have to remember the
1193	# settings since the user may have created/deleted/moved markers.
1194
1195	foreach tf [array names _isomarkers] {
1196	foreach m $_isomarkers($tf) {
1197	$m visible no
1198	}
1199	}
1200
1201	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1202	set _width $w
1203	set _height $h
1204	$_arcball resize $w $h
1205	Resize
1206	}
1207
1208	set _first ""
1209	foreach dataobj [get] {
1210	foreach comp [$dataobj components] {
1211	set tag $dataobj-$comp
1212	# Send the data as one huge base64-encoded mess -- yuck!
1213	set data [$dataobj blob $comp]
1214	set nbytes [string length $data]
1215	if { $_reportClientInfo } {
1216	set info {}
1217	lappend info "tool_id" [$dataobj hints toolid]
1218	lappend info "tool_name" [$dataobj hints toolname]
1219	lappend info "tool_title" [$dataobj hints tooltitle]
1220	lappend info "tool_command" [$dataobj hints toolcommand]
1221	lappend info "tool_revision" [$dataobj hints toolrevision]
1222	lappend info "dataset_label" [$dataobj hints label]
1223	lappend info "dataset_size" $nbytes
1224	lappend info "dataset_tag" $tag
1225	SendCmd "clientinfo [list $info]"
1226	}
1227	set extents [$dataobj extents $comp]
1228	# I have a field. Is a vector field or a volume field?
1229	if { $extents == 1 } {
1230	set cmd "volume data follows $nbytes $tag\n"
1231	} else {
1232	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1233	if { $cmd == "" } {
1234	puts stderr "no command"
1235	continue
1236	}
1237	}
1238	append _outbuf $cmd
1239	append _outbuf $data
1240	NameTransferFunc $dataobj $comp
1241	set _recvObjs($tag) 1
1242	}
1243	}
1244
1245	set _first [lindex [get] 0]
1246
1247	# Reset the camera and other view parameters
1248	InitSettings light2side light transp isosurface grid axes volume outline
1249
1250	# nothing to send -- activate the proper volume
1251	if {"" != $_first} {
1252	AdjustSetting light
1253	AdjustSetting transp
1254	set axis [$_first hints updir]
1255	if {"" != $axis} {
1256	SendCmd "up $axis"
1257	}
1258	set location [$_first hints camera]
1259	if { $location != "" } {
1260	array set _view $location
1261	}
1262
1263	}
1264	set _settings($this-qw) $_view(qw)
1265	set _settings($this-qx) $_view(qx)
1266	set _settings($this-qy) $_view(qy)
1267	set _settings($this-qz) $_view(qz)
1268	set _settings($this-xpan) $_view(xpan)
1269	set _settings($this-ypan) $_view(ypan)
1270	set _settings($this-zoom) $_view(zoom)
1271
1272	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1273	$_arcball quaternion $q
1274	SendCmd "camera orient $q"
1275	SendCmd "camera reset"
1276	PanCamera
1277	SendCmd "camera zoom $_view(zoom)"
1278
1279	foreach dataobj [get] {
1280	foreach comp [$dataobj components] {
1281	NameTransferFunc $dataobj $comp
1282	}
1283	}
1284
1285	# nothing to send -- activate the proper ivol
1286	set _first [lindex [get] 0]
1287	if {"" != $_first} {
1288	set axis [$_first hints updir]
1289	if {"" != $axis} {
1290	SendCmd "up $axis"
1291	}
1292	set location [$_first hints camera]
1293	if { $location != "" } {
1294	array set _view $location
1295	}
1296	set comp [lindex [$_first components] 0]
1297	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1298	}
1299
1300
1301	# sync the state of slicers
1302	set vols [CurrentVolumeIds -cutplanes]
1303	foreach axis {x y z} {
1304	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1305	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1306	SendCmd "cutplane position $pos $axis $vols"
1307	}
1308	SendCmd "volume data state $_settings($this-volume)"
1309	EventuallyResizeLegend
1310
1311	# Actually write the commands to the server socket. If it fails, we don't
1312	# care. We're finished here.
1313	blt::busy hold $itk_component(hull)
1314	StopBufferingCommands
1315	blt::busy release $itk_component(hull)
1316	set _reset 0
1317	}
1318
1319	# ----------------------------------------------------------------------
1320	# USAGE: CurrentVolumeIds ?-cutplanes?
1321	#
1322	# Returns a list of volume server IDs for the current volume being
1323	# displayed. This is normally a single ID, but it might be a list
1324	# of IDs if the current data object has multiple components.
1325	# ----------------------------------------------------------------------
1326	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1327	return ""
1328	if { $_first == "" } {
1329	return
1330	}
1331	foreach key [array names _serverObjs -] {
1332	if {[string match $_first-* $key]} {
1333	array set style {
1334	-cutplanes 1
1335	}
1336	foreach {dataobj comp} [split $key -] break
1337	array set style [lindex [$dataobj components -style $comp] 0]
1338	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1339	lappend rlist $_serverObjs($key)
1340	}
1341	}
1342	}
1343	return $rlist
1344	}
1345
1346	# ----------------------------------------------------------------------
1347	# USAGE: Zoom in
1348	# USAGE: Zoom out
1349	# USAGE: Zoom reset
1350	#
1351	# Called automatically when the user clicks on one of the zoom
1352	# controls for this widget. Changes the zoom for the current view.
1353	# ----------------------------------------------------------------------
1354	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1355	switch -- $option {
1356	"in" {
1357	set _view(zoom) [expr {$_view(zoom)*1.25}]
1358	set _settings($this-zoom) $_view(zoom)
1359	SendCmd "camera zoom $_view(zoom)"
1360	}
1361	"out" {
1362	set _view(zoom) [expr {$_view(zoom)*0.8}]
1363	set _settings($this-zoom) $_view(zoom)
1364	SendCmd "camera zoom $_view(zoom)"
1365	}
1366	"reset" {
1367	array set _view {
1368	qw 0.853553
1369	qx -0.353553
1370	qy 0.353553
1371	qz 0.146447
1372	zoom 1.0
1373	xpan 0
1374	ypan 0
1375	}
1376	if { $_first != "" } {
1377	set location [$_first hints camera]
1378	if { $location != "" } {
1379	array set _view $location
1380	}
1381	}
1382	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1383	$_arcball quaternion $q
1384	SendCmd "camera orient $q"
1385	SendCmd "camera reset"
1386	set _settings($this-qw) $_view(qw)
1387	set _settings($this-qx) $_view(qx)
1388	set _settings($this-qy) $_view(qy)
1389	set _settings($this-qz) $_view(qz)
1390	set _settings($this-xpan) $_view(xpan)
1391	set _settings($this-ypan) $_view(ypan)
1392	set _settings($this-zoom) $_view(zoom)
1393	}
1394	}
1395	}
1396
1397	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1398	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1399	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1400	set x $_view(xpan)
1401	set y $_view(ypan)
1402	SendCmd "camera pan $x $y"
1403	}
1404
1405	# ----------------------------------------------------------------------
1406	# USAGE: Rotate click <x> <y>
1407	# USAGE: Rotate drag <x> <y>
1408	# USAGE: Rotate release <x> <y>
1409	#
1410	# Called automatically when the user clicks/drags/releases in the
1411	# plot area. Moves the plot according to the user's actions.
1412	# ----------------------------------------------------------------------
1413	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1414	switch -- $option {
1415	click {
1416	$itk_component(3dview) configure -cursor fleur
1417	set _click(x) $x
1418	set _click(y) $y
1419	}
1420	drag {
1421	if {[array size _click] == 0} {
1422	Rotate click $x $y
1423	} else {
1424	set w [winfo width $itk_component(3dview)]
1425	set h [winfo height $itk_component(3dview)]
1426	if {$w <= 0 \|\| $h <= 0} {
1427	return
1428	}
1429
1430	if {[catch {
1431	# this fails sometimes for no apparent reason
1432	set dx [expr {double($x-$_click(x))/$w}]
1433	set dy [expr {double($y-$_click(y))/$h}]
1434	}]} {
1435	return
1436	}
1437
1438	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1439	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1440	set _settings($this-qw) $_view(qw)
1441	set _settings($this-qx) $_view(qx)
1442	set _settings($this-qy) $_view(qy)
1443	set _settings($this-qz) $_view(qz)
1444	SendCmd "camera orient $q"
1445
1446	set _click(x) $x
1447	set _click(y) $y
1448	}
1449	}
1450	release {
1451	Rotate drag $x $y
1452	$itk_component(3dview) configure -cursor ""
1453	catch {unset _click}
1454	}
1455	default {
1456	error "bad option \"$option\": should be click, drag, release"
1457	}
1458	}
1459	}
1460
1461	# ----------------------------------------------------------------------
1462	# USAGE: $this Pan click x y
1463	# $this Pan drag x y
1464	# $this Pan release x y
1465	#
1466	# Called automatically when the user clicks on one of the zoom
1467	# controls for this widget. Changes the zoom for the current view.
1468	# ----------------------------------------------------------------------
1469	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1470	# Experimental stuff
1471	set w [winfo width $itk_component(3dview)]
1472	set h [winfo height $itk_component(3dview)]
1473	if { $option == "set" } {
1474	set x [expr $x / double($w)]
1475	set y [expr $y / double($h)]
1476	set _view(xpan) [expr $_view(xpan) + $x]
1477	set _view(ypan) [expr $_view(ypan) + $y]
1478	PanCamera
1479	set _settings($this-xpan) $_view(xpan)
1480	set _settings($this-ypan) $_view(ypan)
1481	return
1482	}
1483	if { $option == "click" } {
1484	set _click(x) $x
1485	set _click(y) $y
1486	$itk_component(3dview) configure -cursor hand1
1487	}
1488	if { $option == "drag" \|\| $option == "release" } {
1489	set dx [expr ($_click(x) - $x)/double($w)]
1490	set dy [expr ($_click(y) - $y)/double($h)]
1491	set _click(x) $x
1492	set _click(y) $y
1493	set _view(xpan) [expr $_view(xpan) - $dx]
1494	set _view(ypan) [expr $_view(ypan) - $dy]
1495	PanCamera
1496	set _settings($this-xpan) $_view(xpan)
1497	set _settings($this-ypan) $_view(ypan)
1498	}
1499	if { $option == "release" } {
1500	$itk_component(3dview) configure -cursor ""
1501	}
1502	}
1503
1504
1505	# ----------------------------------------------------------------------
1506	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1507	#
1508	# Called when the user clicks on the record, stop or play buttons
1509	# for flow visualization.
1510	# ----------------------------------------------------------------------
1511	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1512	switch -- $option {
1513	movie {
1514	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1515	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1516	}
1517	set action [lindex $args 0]
1518	set op [lindex $args 1]
1519	if {$op == ""} { set op "on" }
1520
1521	set current [State $action]
1522	if {$op == "toggle"} {
1523	if {$current == "on"} {
1524	set op "off"
1525	} else {
1526	set op "on"
1527	}
1528	}
1529	set cmds ""
1530	switch -- $action {
1531	record {
1532	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1533	$itk_component(rewind) configure -relief sunken
1534	$itk_component(stop) configure -relief raised
1535	$itk_component(play) configure -relief raised
1536	set inner $itk_component(settingsFrame)
1537	set frames [$inner.framecnt value]
1538	set _settings(nsteps) $frames
1539	set cmds "flow capture $frames"
1540	SendCmd $cmds
1541	}
1542	}
1543	stop {
1544	if { [$itk_component(stop) cget -relief] != "sunken" } {
1545	$itk_component(rewind) configure -relief raised
1546	$itk_component(stop) configure -relief sunken
1547	$itk_component(play) configure -relief raised
1548	_pause
1549	set cmds "flow reset"
1550	SendCmd $cmds
1551	}
1552	}
1553	play {
1554	if { [$itk_component(play) cget -relief] != "sunken" } {
1555	$itk_component(rewind) configure -relief raised
1556	$itk_component(stop) configure -relief raised
1557	$itk_component(play) configure \
1558	-image [Rappture::icon flow-pause] \
1559	-relief sunken
1560	bind $itk_component(play) <ButtonPress> \
1561	[itcl::code $this _pause]
1562	flow next
1563	}
1564	}
1565	default {
1566	error "bad option \"$option\": should be one of record\|stop\|play"
1567	}
1568
1569	}
1570	}
1571	default {
1572	error "bad option \"$option\": should be movie"
1573	}
1574	}
1575	}
1576
1577	# ----------------------------------------------------------------------
1578	# USAGE: Play
1579	#
1580	# ----------------------------------------------------------------------
1581	itcl::body Rappture::FlowvisViewer::Play {} {
1582	SendCmd "flow next"
1583	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1584	$_dispatcher event -after $delay !play
1585	}
1586
1587	# ----------------------------------------------------------------------
1588	# USAGE: Pause
1589	#
1590	# Invoked when the user hits the "pause" button to stop playing the
1591	# current sequence of frames as a movie.
1592	# ----------------------------------------------------------------------
1593	itcl::body Rappture::FlowvisViewer::Pause {} {
1594	$_dispatcher cancel !play
1595
1596	# Toggle the button to "play" mode
1597	$itk_component(play) configure \
1598	-image [Rappture::icon flow-start] \
1599	-relief raised
1600	bind $itk_component(play) <ButtonPress> \
1601	[itcl::code $this Flow movie play toggle]
1602	}
1603
1604	# ----------------------------------------------------------------------
1605	# USAGE: InitSettings <what> ?<value>?
1606	#
1607	# Used internally to update rendering settings whenever parameters
1608	# change in the popup settings panel. Sends the new settings off
1609	# to the back end.
1610	# ----------------------------------------------------------------------
1611	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1612	foreach arg $args {
1613	AdjustSetting $arg
1614	}
1615	}
1616
1617	# ----------------------------------------------------------------------
1618	# USAGE: AdjustSetting <what> ?<value>?
1619	#
1620	# Used internally to update rendering settings whenever parameters
1621	# change in the popup settings panel. Sends the new settings off
1622	# to the back end.
1623	# ----------------------------------------------------------------------
1624	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1625	switch -- $what {
1626	colormap {
1627	set color [$itk_component(colormap) value]
1628	set _settings(colormap) $color
1629	#ResetColormap $color
1630	}
1631	light {
1632	if { $_first != "" } {
1633	set comp [lindex [$_first components] 0]
1634	set tag $_first-$comp
1635	set diffuse [expr {0.01*$_settings($this-light)}]
1636	set ambient [expr {1.0 - $diffuse}]
1637	set specularLevel 0.3
1638	set specularExp 90.0
1639	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1640	}
1641	}
1642	light2side {
1643	if { $_first != "" } {
1644	set comp [lindex [$_first components] 0]
1645	set tag $_first-$comp
1646	set val $_settings($this-light2side)
1647	SendCmd "$tag configure -light2side $val"
1648	}
1649	}
1650	transp {
1651	if { $_first != "" } {
1652	set comp [lindex [$_first components] 0]
1653	set tag $_first-$comp
1654	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1655	SendCmd "$tag configure -opacity $opacity"
1656	}
1657	}
1658	opacity {
1659	if { $_first != "" && $_activeTf != "" } {
1660	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1661	set tf $_activeTf
1662	set _settings($this-$tf-opacity) $opacity
1663	updatetransferfuncs
1664	}
1665	}
1666
1667	thickness {
1668	if { $_first != "" && $_activeTf != "" } {
1669	set val $_settings($this-thickness)
1670	# Scale values between 0.00001 and 0.01000
1671	set sval [expr {0.0001*double($val)}]
1672	set tf $_activeTf
1673	set _settings($this-$tf-thickness) $sval
1674	updatetransferfuncs
1675	}
1676	}
1677	"outline" {
1678	if { $_first != "" } {
1679	set comp [lindex [$_first components] 0]
1680	set tag $_first-$comp
1681	SendCmd "$tag configure -outline $_settings($this-outline)"
1682	}
1683	}
1684	"isosurface" {
1685	if { [isconnected] } {
1686	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1687	}
1688	}
1689	"grid" {
1690	if { [isconnected] } {
1691	SendCmd "grid visible $_settings($this-grid)"
1692	}
1693	}
1694	"axes" {
1695	if { [isconnected] } {
1696	SendCmd "axis visible $_settings($this-axes)"
1697	}
1698	}
1699	"legend" {
1700	if { $_settings($this-legend) } {
1701	blt::table $itk_component(plotarea) \
1702	0,0 $itk_component(3dview) -fill both \
1703	1,0 $itk_component(legend) -fill x
1704	blt::table configure $itk_component(plotarea) r1 -resize none
1705	} else {
1706	blt::table forget $itk_component(legend)
1707	}
1708	}
1709	"volume" {
1710	if { $_first != "" } {
1711	set comp [lindex [$_first components] 0]
1712	set tag $_first-$comp
1713	SendCmd "$tag configure -volume $_settings($this-volume)"
1714	}
1715	}
1716	"xcutplane" - "ycutplane" - "zcutplane" {
1717	set axis [string range $what 0 0]
1718	set bool $_settings($this-$what)
1719	if { [isconnected] } {
1720	set vols [CurrentVolumeIds -cutplanes]
1721	SendCmd "cutplane state $bool $axis $vols"
1722	}
1723	if { $bool } {
1724	$itk_component(${axis}CutScale) configure -state normal \
1725	-troughcolor white
1726	} else {
1727	$itk_component(${axis}CutScale) configure -state disabled \
1728	-troughcolor grey82
1729	}
1730	}
1731	default {
1732	error "don't know how to fix $what"
1733	}
1734	}
1735	}
1736
1737	# ----------------------------------------------------------------------
1738	# USAGE: ResizeLegend
1739	#
1740	# Used internally to update the legend area whenever it changes size
1741	# or when the field changes. Asks the server to send a new legend
1742	# for the current field.
1743	# ----------------------------------------------------------------------
1744	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1745	set _resizeLegendPending 0
1746	set lineht [font metrics $itk_option(-font) -linespace]
1747	set w [expr {$_width-20}]
1748	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1749
1750	if { $_first == "" } {
1751	return
1752	}
1753	set comp [lindex [$_first components] 0]
1754	set tag $_first-$comp
1755	#set _activeTf [lindex $_obj2style($tag) 0]
1756	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1757	#SendCmd "legend $_activeTf $w $h"
1758	SendCmd "$tag legend $w $h"
1759	} else {
1760	# Can't do this as this will remove the items associated with the
1761	# isomarkers.
1762
1763	#$itk_component(legend) delete all
1764	}
1765	}
1766
1767	#
1768	# NameTransferFunc --
1769	#
1770	# Creates a transfer function name based on the <style> settings in the
1771	# library run.xml file. This placeholder will be used later to create
1772	# and send the actual transfer function once the data info has been sent
1773	# to us by the render server. [We won't know the volume limits until the
1774	# server parses the 3D data and sends back the limits via ReceiveData.]
1775	#
1776	# FIXME: The current way we generate transfer-function names completely
1777	# ignores the -markers option. The problem is that we are forced
1778	# to compute the name from an increasing complex set of values:
1779	# color, levels, marker, opacity. I think we're stuck doing it
1780	# now.
1781	#
1782	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1783	array set style {
1784	-color BCGYR
1785	-levels 6
1786	-opacity 1.0
1787	-light 40
1788	-transp 50
1789	}
1790	array set style [lindex [$dataobj components -style $comp] 0]
1791	set _settings($this-light) $style(-light)
1792	set _settings($this-transp) $style(-transp)
1793	set _settings($this-opacity) [expr $style(-opacity) * 100]
1794	set tf "$style(-color):$style(-levels):$style(-opacity)"
1795	set _obj2style($dataobj-$comp) $tf
1796	lappend _style2objs($tf) $dataobj $comp
1797	return $tf
1798	}
1799
1800	#
1801	# ComputeTransferFunc --
1802	#
1803	# Computes and sends the transfer function to the render server. It's
1804	# assumed that the volume data limits are known and that the global
1805	# transfer-functions slider values have be setup. Both parts are
1806	# needed to compute the relative value (location) of the marker, and
1807	# the alpha map of the transfer function.
1808	#
1809	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1810	array set style {
1811	-color BCGYR
1812	-levels 6
1813	-opacity 1.0
1814	-light 40
1815	-transp 50
1816	}
1817	set dataobj ""; set comp ""
1818	foreach {dataobj comp} $_style2objs($tf) break
1819	if { $dataobj == "" } {
1820	return 0
1821	}
1822	array set style [lindex [$dataobj components -style $comp] 0]
1823
1824
1825	# We have to parse the style attributes for a volume using this
1826	# transfer-function once. This sets up the initial isomarkers for the
1827	# transfer function. The user may add/delete markers, so we have to
1828	# maintain a list of markers for each transfer-function. We use the one
1829	# of the volumes (the first in the list) using the transfer-function as a
1830	# reference.
1831	#
1832	# FIXME: The current way we generate transfer-function names completely
1833	# ignores the -markers option. The problem is that we are forced
1834	# to compute the name from an increasing complex set of values:
1835	# color, levels, marker, opacity. I think the cow's out of the
1836	# barn on this one.
1837
1838	if { ![info exists _isomarkers($tf)] } {
1839	# Have to defer creation of isomarkers until we have data limits
1840	if { [info exists style(-markers)] &&
1841	[llength $style(-markers)] > 0 } {
1842	ParseMarkersOption $tf $style(-markers)
1843	} else {
1844	ParseLevelsOption $tf $style(-levels)
1845	}
1846	}
1847	if { [info exists style(-nonuniformcolors)] } {
1848	foreach { value color } $style(-nonuniformcolors) {
1849	append cmap "$value [Color2RGB $color] "
1850	}
1851	} else {
1852	set cmap [ColorsToColormap $style(-color)]
1853	}
1854	set tag $this-$tf
1855	if { ![info exists _settings($tag-opacity)] } {
1856	set _settings($tag-opacity) $style(-opacity)
1857	}
1858	set max 1.0 ;#$_settings($tag-opacity)
1859
1860	set isovalues {}
1861	foreach m $_isomarkers($tf) {
1862	lappend isovalues [$m relval]
1863	}
1864	# Sort the isovalues
1865	set isovalues [lsort -real $isovalues]
1866
1867	if { ![info exists _settings($tag-thickness)]} {
1868	set _settings($tag-thickness) 0.005
1869	}
1870	set delta $_settings($tag-thickness)
1871
1872	set first [lindex $isovalues 0]
1873	set last [lindex $isovalues end]
1874	set wmap ""
1875	if { $first == "" \|\| $first != 0.0 } {
1876	lappend wmap 0.0 0.0
1877	}
1878	foreach x $isovalues {
1879	set x1 [expr {$x-$delta-0.00001}]
1880	set x2 [expr {$x-$delta}]
1881	set x3 [expr {$x+$delta}]
1882	set x4 [expr {$x+$delta+0.00001}]
1883	if { $x1 < 0.0 } {
1884	set x1 0.0
1885	} elseif { $x1 > 1.0 } {
1886	set x1 1.0
1887	}
1888	if { $x2 < 0.0 } {
1889	set x2 0.0
1890	} elseif { $x2 > 1.0 } {
1891	set x2 1.0
1892	}
1893	if { $x3 < 0.0 } {
1894	set x3 0.0
1895	} elseif { $x3 > 1.0 } {
1896	set x3 1.0
1897	}
1898	if { $x4 < 0.0 } {
1899	set x4 0.0
1900	} elseif { $x4 > 1.0 } {
1901	set x4 1.0
1902	}
1903	# add spikes in the middle
1904	lappend wmap $x1 0.0
1905	lappend wmap $x2 $max
1906	lappend wmap $x3 $max
1907	lappend wmap $x4 0.0
1908	}
1909	if { $last == "" \|\| $last != 1.0 } {
1910	lappend wmap 1.0 0.0
1911	}
1912	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1913	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1914	}
1915
1916	# ----------------------------------------------------------------------
1917	# CONFIGURATION OPTION: -plotbackground
1918	# ----------------------------------------------------------------------
1919	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1920	if { [isconnected] } {
1921	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1922	#fix this!
1923	#SendCmd "color background $r $g $b"
1924	}
1925	}
1926
1927	# ----------------------------------------------------------------------
1928	# CONFIGURATION OPTION: -plotforeground
1929	# ----------------------------------------------------------------------
1930	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1931	if { [isconnected] } {
1932	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1933	#fix this!
1934	#SendCmd "color background $r $g $b"
1935	}
1936	}
1937
1938	# ----------------------------------------------------------------------
1939	# CONFIGURATION OPTION: -plotoutline
1940	# ----------------------------------------------------------------------
1941	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1942	# Must check if we are connected because this routine is called from the
1943	# class body when the -plotoutline itk_option is defined. At that point
1944	# the FlowvisViewer class constructor hasn't been called, so we can't
1945	# start sending commands to visualization server.
1946	if { [isconnected] } {
1947	if {"" == $itk_option(-plotoutline)} {
1948	SendCmd "volume outline state off"
1949	} else {
1950	SendCmd "volume outline state on"
1951	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1952	}
1953	}
1954	}
1955
1956	#
1957	# The -levels option takes a single value that represents the number
1958	# of evenly distributed markers based on the current data range. Each
1959	# marker is a relative value from 0.0 to 1.0.
1960	#
1961	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1962	set c $itk_component(legend)
1963	regsub -all "," $levels " " levels
1964	if {[string is int $levels]} {
1965	for {set i 1} { $i <= $levels } {incr i} {
1966	set x [expr {double($i)/($levels+1)}]
1967	set m [Rappture::IsoMarker \#auto $c $this $tf]
1968	$m relval $x
1969	lappend _isomarkers($tf) $m
1970	}
1971	} else {
1972	foreach x $levels {
1973	set m [Rappture::IsoMarker \#auto $c $this $tf]
1974	$m relval $x
1975	lappend _isomarkers($tf) $m
1976	}
1977	}
1978	}
1979
1980	#
1981	# The -markers option takes a list of zero or more values (the values
1982	# may be separated either by spaces or commas) that have the following
1983	# format:
1984	#
1985	# N% Percent of current total data range. Converted to
1986	# to a relative value between 0.0 and 1.0.
1987	# N Absolute value of marker. If the marker is outside of
1988	# the current range, it will be displayed on the outer
1989	# edge of the legends, but it range it represents will
1990	# not be seen.
1991	#
1992	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1993	set c $itk_component(legend)
1994	regsub -all "," $markers " " markers
1995	foreach marker $markers {
1996	set n [scan $marker "%g%s" value suffix]
1997	if { $n == 2 && $suffix == "%" } {
1998	# ${n}% : Set relative value.
1999	set value [expr {$value * 0.01}]
2000	set m [Rappture::IsoMarker \#auto $c $this $tf]
2001	$m relval $value
2002	lappend _isomarkers($tf) $m
2003	} else {
2004	# ${n} : Set absolute value.
2005	set m [Rappture::IsoMarker \#auto $c $this $tf]
2006	$m absval $value
2007	lappend _isomarkers($tf) $m
2008	}
2009	}
2010	}
2011
2012	# ----------------------------------------------------------------------
2013	# USAGE: UndateTransferFuncs
2014	# ----------------------------------------------------------------------
2015	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
2016	$_dispatcher event -after 100 !send_transfunc
2017	}
2018
2019	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2020	if { $_activeTf == "" } {
2021	error "active transfer function isn't set"
2022	}
2023	set tf $_activeTf
2024	set c $itk_component(legend)
2025	set m [Rappture::IsoMarker \#auto $c $this $tf]
2026	set w [winfo width $c]
2027	$m relval [expr {double($x-10)/($w-20)}]
2028	lappend _isomarkers($tf) $m
2029	updatetransferfuncs
2030	return 1
2031	}
2032
2033	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2034	set tf [$marker transferfunc]
2035	set bool 0
2036	if { [info exists _isomarkers($tf)] } {
2037	set list {}
2038	set marker [namespace tail $marker]
2039	foreach m $_isomarkers($tf) {
2040	set sx [$m screenpos]
2041	if { $m != $marker } {
2042	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2043	$marker relval [$m relval]
2044	itcl::delete object $m
2045	bell
2046	set bool 1
2047	continue
2048	}
2049	}
2050	lappend list $m
2051	}
2052	set _isomarkers($tf) $list
2053	updatetransferfuncs
2054	}
2055	return $bool
2056	}
2057
2058	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2059	set tf [$marker transferfunc]
2060	if { [info exists _isomarkers($tf)] } {
2061	set marker [namespace tail $marker]
2062	foreach m $_isomarkers($tf) {
2063	set sx [$m screenpos]
2064	if { $m != $marker } {
2065	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2066	$m activate $bool
2067	}
2068	}
2069	}
2070	return ""
2071	}
2072
2073	itcl::body Rappture::FlowvisViewer::limits { tf } {
2074	set _limits(vmin) 0.0
2075	set _limits(vmax) 1.0
2076	if { ![info exists _style2objs($tf)] } {
2077	puts stderr "no style2objs for $tf tf=($tf)"
2078	return [array get _limits]
2079	}
2080	set min ""; set max ""
2081	foreach {dataobj comp} $_style2objs($tf) {
2082	set tag $dataobj-$comp
2083	if { ![info exists _serverObjs($tag)] } {
2084	puts stderr "$tag not in serverObjs?"
2085	continue
2086	}
2087	if { ![info exists _limits($tag-min)] } {
2088	puts stderr "$tag no min?"
2089	continue
2090	}
2091	if { $min == "" \|\| $min > $_limits($tag-min) } {
2092	set min $_limits($tag-min)
2093	}
2094	if { $max == "" \|\| $max < $_limits($tag-max) } {
2095	set max $_limits($tag-max)
2096	}
2097	}
2098	if { $min != "" } {
2099	set _limits(vmin) $min
2100	}
2101	if { $max != "" } {
2102	set _limits(vmax) $max
2103	}
2104	return [array get _limits]
2105	}
2106
2107	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2108	foreach { key value } {
2109	grid 0
2110	axes 0
2111	outline 1
2112	volume 1
2113	legend 1
2114	particles 1
2115	lic 1
2116	} {
2117	set _settings($this-$key) $value
2118	}
2119
2120	set fg [option get $itk_component(hull) font Font]
2121	#set bfg [option get $itk_component(hull) boldFont Font]
2122
2123	set inner [$itk_component(main) insert end \
2124	-title "View Settings" \
2125	-icon [Rappture::icon wrench]]
2126	$inner configure -borderwidth 4
2127
2128	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2129	checkbutton $inner.isosurface \
2130	-text "Isosurface shading" \
2131	-variable [itcl::scope _settings($this-isosurface)] \
2132	-command [itcl::code $this AdjustSetting isosurface] \
2133	-font "Arial 9"
2134
2135	checkbutton $inner.axes \
2136	-text "Axes" \
2137	-variable [itcl::scope _settings($this-axes)] \
2138	-command [itcl::code $this AdjustSetting axes] \
2139	-font "Arial 9"
2140
2141	checkbutton $inner.grid \
2142	-text "Grid" \
2143	-variable [itcl::scope _settings($this-grid)] \
2144	-command [itcl::code $this AdjustSetting grid] \
2145	-font "Arial 9"
2146
2147	checkbutton $inner.outline \
2148	-text "Outline" \
2149	-variable [itcl::scope _settings($this-outline)] \
2150	-command [itcl::code $this AdjustSetting outline] \
2151	-font "Arial 9"
2152
2153	checkbutton $inner.legend \
2154	-text "Legend" \
2155	-variable [itcl::scope _settings($this-legend)] \
2156	-command [itcl::code $this AdjustSetting legend] \
2157	-font "Arial 9"
2158
2159	checkbutton $inner.volume \
2160	-text "Volume" \
2161	-variable [itcl::scope _settings($this-volume)] \
2162	-command [itcl::code $this AdjustSetting volume] \
2163	-font "Arial 9"
2164
2165	checkbutton $inner.particles \
2166	-text "Particles" \
2167	-variable [itcl::scope _settings($this-particles)] \
2168	-command [itcl::code $this AdjustSetting particles] \
2169	-font "Arial 9"
2170
2171	checkbutton $inner.lic \
2172	-text "Lic" \
2173	-variable [itcl::scope _settings($this-lic)] \
2174	-command [itcl::code $this AdjustSetting lic] \
2175	-font "Arial 9"
2176
2177	frame $inner.frame
2178
2179	blt::table $inner \
2180	0,0 $inner.axes -cspan 2 -anchor w \
2181	1,0 $inner.grid -cspan 2 -anchor w \
2182	2,0 $inner.outline -cspan 2 -anchor w \
2183	3,0 $inner.volume -cspan 2 -anchor w \
2184	4,0 $inner.legend -cspan 2 -anchor w
2185
2186	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2187
2188	blt::table configure $inner r* -resize none
2189	blt::table configure $inner r5 -resize expand
2190	}
2191
2192	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2193	foreach { key value } {
2194	light2side 1
2195	light 40
2196	transp 50
2197	opacity 100
2198	thickness 350
2199	} {
2200	set _settings($this-$key) $value
2201	}
2202
2203	set inner [$itk_component(main) insert end \
2204	-title "Volume Settings" \
2205	-icon [Rappture::icon volume-on]]
2206	$inner configure -borderwidth 4
2207
2208	set fg [option get $itk_component(hull) font Font]
2209	#set bfg [option get $itk_component(hull) boldFont Font]
2210
2211	checkbutton $inner.vol -text "Show volume" -font $fg \
2212	-text "Volume" \
2213	-variable [itcl::scope _settings($this-volume)] \
2214	-command [itcl::code $this AdjustSetting volume] \
2215	-font "Arial 9"
2216
2217	label $inner.shading -text "Shading:" -font $fg
2218
2219	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2220	-variable [itcl::scope _settings($this-light2side)] \
2221	-command [itcl::code $this AdjustSetting light2side]
2222
2223	label $inner.dim -text "Glow" -font $fg
2224	::scale $inner.light -from 0 -to 100 -orient horizontal \
2225	-variable [itcl::scope _settings($this-light)] \
2226	-width 10 \
2227	-showvalue off -command [itcl::code $this AdjustSetting light]
2228	label $inner.bright -text "Surface" -font $fg
2229
2230	label $inner.fog -text "Clear" -font $fg
2231	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2232	-variable [itcl::scope _settings($this-transp)] \
2233	-width 10 \
2234	-showvalue off -command [itcl::code $this AdjustSetting transp]
2235	label $inner.plastic -text "Opaque" -font $fg
2236
2237	label $inner.clear -text "Clear" -font $fg
2238	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2239	-variable [itcl::scope _settings($this-opacity)] \
2240	-width 10 \
2241	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2242	label $inner.opaque -text "Opaque" -font $fg
2243
2244	label $inner.thin -text "Thin" -font $fg
2245	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2246	-variable [itcl::scope _settings($this-thickness)] \
2247	-width 10 \
2248	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2249	label $inner.thick -text "Thick" -font $fg
2250
2251	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2252	itk_component add colormap {
2253	Rappture::Combobox $inner.colormap -width 10 -editable no
2254	}
2255
2256	$inner.colormap choices insert end \
2257	"BCGYR" "BCGYR" \
2258	"BGYOR" "BGYOR" \
2259	"blue" "blue" \
2260	"blue-to-brown" "blue-to-brown" \
2261	"blue-to-orange" "blue-to-orange" \
2262	"blue-to-grey" "blue-to-grey" \
2263	"green-to-magenta" "green-to-magenta" \
2264	"greyscale" "greyscale" \
2265	"nanohub" "nanohub" \
2266	"rainbow" "rainbow" \
2267	"spectral" "spectral" \
2268	"ROYGB" "ROYGB" \
2269	"RYGCB" "RYGCB" \
2270	"brown-to-blue" "brown-to-blue" \
2271	"grey-to-blue" "grey-to-blue" \
2272	"orange-to-blue" "orange-to-blue" \
2273	"none" "none"
2274
2275	$itk_component(colormap) value "BCGYR"
2276	bind $inner.colormap <<Value>> \
2277	[itcl::code $this AdjustSetting colormap]
2278
2279	blt::table $inner \
2280	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2281	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2282	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2283	3,0 $inner.dim -anchor e -pady 2 \
2284	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2285	3,3 $inner.bright -anchor w -pady 2 \
2286	4,0 $inner.fog -anchor e -pady 2 \
2287	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2288	4,3 $inner.plastic -anchor w -pady 2 \
2289	5,0 $inner.thin -anchor e -pady 2 \
2290	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2291	5,3 $inner.thick -anchor w -pady 2
2292
2293	blt::table configure $inner c0 c1 c3 r* -resize none
2294	blt::table configure $inner r6 -resize expand
2295	}
2296
2297	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2298	set inner [$itk_component(main) insert end \
2299	-title "Cutplane Settings" \
2300	-icon [Rappture::icon cutbutton]]
2301	$inner configure -borderwidth 4
2302
2303	# X-value slicer...
2304	itk_component add xCutButton {
2305	Rappture::PushButton $inner.xbutton \
2306	-onimage [Rappture::icon x-cutplane] \
2307	-offimage [Rappture::icon x-cutplane] \
2308	-command [itcl::code $this AdjustSetting xcutplane] \
2309	-variable [itcl::scope _settings($this-xcutplane)]
2310	}
2311	Rappture::Tooltip::for $itk_component(xCutButton) \
2312	"Toggle the X cut plane on/off"
2313
2314	itk_component add xCutScale {
2315	::scale $inner.xval -from 100 -to 0 \
2316	-width 10 -orient vertical -showvalue off \
2317	-borderwidth 1 -highlightthickness 0 \
2318	-command [itcl::code $this Slice move x] \
2319	-variable [itcl::scope _settings($this-xcutposition)]
2320	} {
2321	usual
2322	ignore -borderwidth -highlightthickness
2323	}
2324	# Set the default cutplane value before disabling the scale.
2325	$itk_component(xCutScale) set 50
2326	$itk_component(xCutScale) configure -state disabled
2327	Rappture::Tooltip::for $itk_component(xCutScale) \
2328	"@[itcl::code $this SlicerTip x]"
2329
2330	# Y-value slicer...
2331	itk_component add yCutButton {
2332	Rappture::PushButton $inner.ybutton \
2333	-onimage [Rappture::icon y-cutplane] \
2334	-offimage [Rappture::icon y-cutplane] \
2335	-command [itcl::code $this AdjustSetting ycutplane] \
2336	-variable [itcl::scope _settings($this-ycutplane)]
2337	}
2338	Rappture::Tooltip::for $itk_component(yCutButton) \
2339	"Toggle the Y cut plane on/off"
2340
2341	itk_component add yCutScale {
2342	::scale $inner.yval -from 100 -to 0 \
2343	-width 10 -orient vertical -showvalue off \
2344	-borderwidth 1 -highlightthickness 0 \
2345	-command [itcl::code $this Slice move y] \
2346	-variable [itcl::scope _settings($this-ycutposition)]
2347	} {
2348	usual
2349	ignore -borderwidth -highlightthickness
2350	}
2351	Rappture::Tooltip::for $itk_component(yCutScale) \
2352	"@[itcl::code $this SlicerTip y]"
2353	# Set the default cutplane value before disabling the scale.
2354	$itk_component(yCutScale) set 50
2355	$itk_component(yCutScale) configure -state disabled
2356
2357	# Z-value slicer...
2358	itk_component add zCutButton {
2359	Rappture::PushButton $inner.zbutton \
2360	-onimage [Rappture::icon z-cutplane] \
2361	-offimage [Rappture::icon z-cutplane] \
2362	-command [itcl::code $this AdjustSetting zcutplane] \
2363	-variable [itcl::scope _settings($this-zcutplane)]
2364	}
2365	Rappture::Tooltip::for $itk_component(zCutButton) \
2366	"Toggle the Z cut plane on/off"
2367
2368	itk_component add zCutScale {
2369	::scale $inner.zval -from 100 -to 0 \
2370	-width 10 -orient vertical -showvalue off \
2371	-borderwidth 1 -highlightthickness 0 \
2372	-command [itcl::code $this Slice move z] \
2373	-variable [itcl::scope _settings($this-zcutposition)]
2374	} {
2375	usual
2376	ignore -borderwidth -highlightthickness
2377	}
2378	$itk_component(zCutScale) set 50
2379	$itk_component(zCutScale) configure -state disabled
2380	#$itk_component(zCutScale) configure -state disabled
2381	Rappture::Tooltip::for $itk_component(zCutScale) \
2382	"@[itcl::code $this SlicerTip z]"
2383
2384	blt::table $inner \
2385	1,1 $itk_component(xCutButton) \
2386	1,2 $itk_component(yCutButton) \
2387	1,3 $itk_component(zCutButton) \
2388	0,1 $itk_component(xCutScale) \
2389	0,2 $itk_component(yCutScale) \
2390	0,3 $itk_component(zCutScale) \
2391
2392	blt::table configure $inner r0 r1 c* -resize none
2393	blt::table configure $inner r2 c4 -resize expand
2394	blt::table configure $inner c0 -width 2
2395	blt::table configure $inner c1 c2 c3 -padx 2
2396	}
2397
2398	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2399	set inner [$itk_component(main) insert end \
2400	-title "Camera Settings" \
2401	-icon [Rappture::icon camera]]
2402	$inner configure -borderwidth 4
2403
2404	label $inner.view_l -text "view" -font "Arial 9"
2405	set f [frame $inner.view]
2406	foreach side { front back left right top bottom } {
2407	button $f.$side -image [Rappture::icon view$side] \
2408	-command [itcl::code $this SetOrientation $side]
2409	Rappture::Tooltip::for $f.$side "Change the view to $side"
2410	pack $f.$side -side left
2411	}
2412
2413	blt::table $inner \
2414	0,0 $inner.view_l -anchor e -pady 2 \
2415	0,1 $inner.view -anchor w -pady 2
2416
2417	set row 1
2418	set labels { qw qx qy qz xpan ypan zoom }
2419	foreach tag $labels {
2420	label $inner.${tag}label -text $tag -font "Arial 9"
2421	entry $inner.${tag} -font "Arial 9" -bg white \
2422	-textvariable [itcl::scope _settings($this-$tag)]
2423	bind $inner.${tag} <KeyPress-Return> \
2424	[itcl::code $this camera set ${tag}]
2425	blt::table $inner \
2426	$row,0 $inner.${tag}label -anchor e -pady 2 \
2427	$row,1 $inner.${tag} -anchor w -pady 2
2428	blt::table configure $inner r$row -resize none
2429	incr row
2430	}
2431
2432	blt::table configure $inner c* r* -resize none
2433	blt::table configure $inner c2 -resize expand
2434	blt::table configure $inner r$row -resize expand
2435	}
2436
2437	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2438	set flowobj ""
2439	foreach key [array names _obj2flow] {
2440	set flowobj $_obj2flow($key)
2441	break
2442	}
2443	if { $flowobj == "" } {
2444	return
2445	}
2446	if { [winfo exists $w.frame] } {
2447	destroy $w.frame
2448	}
2449	set inner [frame $w.frame]
2450	blt::table $w \
2451	5,0 $inner -fill both -cspan 2 -anchor nw
2452	array set hints [$flowobj hints]
2453	checkbutton $inner.showstreams -text "Streams Plane" \
2454	-variable [itcl::scope _settings($this-streams)] \
2455	-command [itcl::code $this streams $key $hints(name)] \
2456	-font "Arial 9"
2457	Rappture::Tooltip::for $inner.showstreams $hints(description)
2458
2459	checkbutton $inner.showarrows -text "Arrows" \
2460	-variable [itcl::scope _settings($this-arrows)] \
2461	-command [itcl::code $this arrows $key $hints(name)] \
2462	-font "Arial 9"
2463
2464	label $inner.particles -text "Particles" -font "Arial 9 bold"
2465	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2466
2467	blt::table $inner \
2468	1,0 $inner.showstreams -anchor w \
2469	2,0 $inner.showarrows -anchor w
2470	blt::table configure $inner c0 c1 -resize none
2471	blt::table configure $inner c2 -resize expand
2472
2473	set row 3
2474	set particles [$flowobj particles]
2475	if { [llength $particles] > 0 } {
2476	blt::table $inner $row,0 $inner.particles -anchor w
2477	incr row
2478	}
2479	foreach part $particles {
2480	array unset info
2481	array set info $part
2482	set name $info(name)
2483	if { ![info exists _settings($this-particles-$name)] } {
2484	set _settings($this-particles-$name) $info(hide)
2485	}
2486	checkbutton $inner.part$row -text $info(label) \
2487	-variable [itcl::scope _settings($this-particles-$name)] \
2488	-onvalue 0 -offvalue 1 \
2489	-command [itcl::code $this particles $key $name] \
2490	-font "Arial 9"
2491	Rappture::Tooltip::for $inner.part$row $info(description)
2492	blt::table $inner $row,0 $inner.part$row -anchor w
2493	if { !$_settings($this-particles-$name) } {
2494	$inner.part$row select
2495	}
2496	incr row
2497	}
2498	set boxes [$flowobj boxes]
2499	if { [llength $boxes] > 0 } {
2500	blt::table $inner $row,0 $inner.boxes -anchor w
2501	incr row
2502	}
2503	foreach box $boxes {
2504	array unset info
2505	array set info $box
2506	set name $info(name)
2507	if { ![info exists _settings($this-box-$name)] } {
2508	set _settings($this-box-$name) $info(hide)
2509	}
2510	checkbutton $inner.box$row -text $info(label) \
2511	-variable [itcl::scope _settings($this-box-$name)] \
2512	-onvalue 0 -offvalue 1 \
2513	-command [itcl::code $this box $key $name] \
2514	-font "Arial 9"
2515	Rappture::Tooltip::for $inner.box$row $info(description)
2516	blt::table $inner $row,0 $inner.box$row -anchor w
2517	if { !$_settings($this-box-$name) } {
2518	$inner.box$row select
2519	}
2520	incr row
2521	}
2522	blt::table configure $inner r* -resize none
2523	blt::table configure $inner r$row -resize expand
2524	blt::table configure $inner c3 -resize expand
2525	event generate [winfo parent [winfo parent $w]] <Configure>
2526	}
2527
2528	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2529	set bool $_settings($this-particles-$name)
2530	SendCmd "$tag particles configure {$name} -hide $bool"
2531	}
2532
2533	itcl::body Rappture::FlowvisViewer::box { tag name } {
2534	set bool $_settings($this-box-$name)
2535	SendCmd "$tag box configure {$name} -hide $bool"
2536	}
2537
2538	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2539	set bool $_settings($this-streams)
2540	SendCmd "$tag configure -slice $bool"
2541	}
2542
2543	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2544	set bool $_settings($this-arrows)
2545	SendCmd "$tag configure -arrows $bool"
2546	}
2547
2548	# ----------------------------------------------------------------------
2549	# USAGE: Slice move x\|y\|z <newval>
2550	#
2551	# Called automatically when the user drags the slider to move the
2552	# cut plane that slices 3D data. Gets the current value from the
2553	# slider and moves the cut plane to the appropriate point in the
2554	# data set.
2555	# ----------------------------------------------------------------------
2556	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2557	switch -- $option {
2558	move {
2559	if {[llength $args] != 2} {
2560	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2561	}
2562	set axis [lindex $args 0]
2563	set newval [lindex $args 1]
2564	set newpos [expr {0.01*$newval}]
2565
2566	# show the current value in the readout
2567
2568	set ids [CurrentVolumeIds -cutplanes]
2569	SendCmd "cutplane position $newpos $axis $ids"
2570	}
2571	default {
2572	error "bad option \"$option\": should be axis, move, or volume"
2573	}
2574	}
2575	}
2576
2577	# ----------------------------------------------------------------------
2578	# USAGE: SlicerTip <axis>
2579	#
2580	# Used internally to generate a tooltip for the x/y/z slicer controls.
2581	# Returns a message that includes the current slicer value.
2582	# ----------------------------------------------------------------------
2583	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2584	set val [$itk_component(${axis}CutScale) get]
2585	# set val [expr {0.01*($val-50)
2586	# *($_limits(${axis}max)-$_limits(${axis}min))
2587	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2588	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2589	}
2590
2591	itcl::body Rappture::FlowvisViewer::Resize {} {
2592	$_arcball resize $_width $_height
2593	SendCmd "screen size $_width $_height"
2594	set _resizePending 0
2595	}
2596
2597	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2598	set _width $w
2599	set _height $h
2600	$_arcball resize $w $h
2601	if { !$_resizePending } {
2602	$_dispatcher event -after 200 !resize
2603	set _resizePending 1
2604	}
2605	}
2606
2607	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2608	if { !$_resizeLegendPending } {
2609	$_dispatcher event -after 100 !legend
2610	set _resizeLegendPending 1
2611	}
2612	}
2613
2614	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2615	set _flow(goto) $nSteps
2616	if { !$_gotoPending } {
2617	$_dispatcher event -after 1000 !goto
2618	set _gotoPending 1
2619	}
2620	}
2621
2622	# camera --
2623	itcl::body Rappture::FlowvisViewer::camera {option args} {
2624	switch -- $option {
2625	"show" {
2626	puts [array get _view]
2627	}
2628	"set" {
2629	set who [lindex $args 0]
2630	set x $_settings($this-$who)
2631	set code [catch { string is double $x } result]
2632	if { $code != 0 \|\| !$result } {
2633	set _settings($this-$who) $_view($who)
2634	return
2635	}
2636	switch -- $who {
2637	"xpan" - "ypan" {
2638	set _view($who) $_settings($this-$who)
2639	PanCamera
2640	}
2641	"qx" - "qy" - "qz" - "qw" {
2642	set _view($who) $_settings($this-$who)
2643	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2644	$_arcball quaternion $q
2645	SendCmd "camera orient $q"
2646	}
2647	"zoom" {
2648	set _view($who) $_settings($this-$who)
2649	SendCmd "camera zoom $_view(zoom)"
2650	}
2651	}
2652	}
2653	}
2654	}
2655
2656	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2657	set tag "$dataobj-$comp"
2658	if { ![info exists _obj2flow($tag)] } {
2659	append cmd "flow add $tag\n"
2660	append cmd "$tag data follows $nbytes $extents\n"
2661	return $cmd
2662	}
2663	set flowobj $_obj2flow($tag)
2664	if { $flowobj == "" } {
2665	puts stderr "no flowobj"
2666	return ""
2667	}
2668	set cmd {}
2669	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2670	array set info [$flowobj hints]
2671	set _settings($this-volume) $info(volume)
2672	set _settings($this-outline) $info(outline)
2673	set _settings($this-arrows) $info(arrows)
2674	set _settings($this-duration) $info(duration)
2675	$itk_component(speed) value $info(speed)
2676	append cmd "flow add $tag"
2677	append cmd " -position $info(position)"
2678	append cmd " -axis $info(axis)"
2679	append cmd " -volume $info(volume)"
2680	append cmd " -outline $info(outline)"
2681	append cmd " -slice $info(streams)"
2682	append cmd " -arrows $info(arrows)\n"
2683	foreach part [$flowobj particles] {
2684	array unset info
2685	array set info $part
2686	set color [Color2RGB $info(color)]
2687	append cmd "$tag particles add $info(name)"
2688	append cmd " -position $info(position)"
2689	append cmd " -hide $info(hide)"
2690	append cmd " -axis $info(axis)"
2691	append cmd " -color {$color}"
2692	append cmd " -size $info(size)\n"
2693	}
2694	foreach box [$flowobj boxes] {
2695	array unset info
2696	set info(corner1) ""
2697	set info(corner2) ""
2698	array set info $box
2699	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2700	continue
2701	}
2702	set color [Color2RGB $info(color)]
2703	append cmd "$tag box add $info(name)"
2704	append cmd " -color {$color}"
2705	append cmd " -hide $info(hide)"
2706	append cmd " -linewidth $info(linewidth) "
2707	append cmd " -corner1 {$info(corner1)} "
2708	append cmd " -corner2 {$info(corner2)}\n"
2709	}
2710	append cmd "$tag data follows $nbytes $extents\n"
2711	return $cmd
2712	}
2713
2714
2715	#
2716	# flow --
2717	#
2718	# Called when the user clicks on the stop or play buttons
2719	# for flow visualization.
2720	#
2721	# $this flow play
2722	# $this flow stop
2723	# $this flow toggle
2724	# $this flow reset
2725	# $this flow pause
2726	# $this flow next
2727	#
2728	itcl::body Rappture::FlowvisViewer::flow { args } {
2729	set option [lindex $args 0]
2730	switch -- $option {
2731	"goto2" {
2732	puts stderr "actually sending \"flow goto $_flow(goto)\""
2733	SendCmd "flow goto $_flow(goto)"
2734	set _gotoPending 0
2735	}
2736	"goto" {
2737	puts stderr "flow goto to $_settings($this-currenttime)"
2738	# Figure out how many steps to the current time based upon
2739	# the speed and duration.
2740	set current $_settings($this-currenttime)
2741	set speed [$itk_component(speed) value]
2742	set time [str2millisecs $_settings($this-duration)]
2743	$itk_component(dial) configure -max $time
2744	set delay [expr int(round(500.0/$speed))]
2745	set timePerStep [expr {double($time) / $delay}]
2746	set nSteps [expr {int(ceil($current/$timePerStep))}]
2747	EventuallyGoto $nSteps
2748	}
2749	"speed" {
2750	set speed [$itk_component(speed) value]
2751	set _flow(delay) [expr int(round(500.0/$speed))]
2752	}
2753	"duration" {
2754	set max [str2millisecs $_settings($this-duration)]
2755	if { $max < 0 } {
2756	bell
2757	return
2758	}
2759	set _flow(duration) $max
2760	set _settings($this-duration) [millisecs2str $max]
2761	$itk_component(dial) configure -max $max
2762	}
2763	"off" {
2764	set _flow(state) 0
2765	$_dispatcher cancel !play
2766	$itk_component(play) deselect
2767	}
2768	"on" {
2769	flow speed
2770	flow duration
2771	set _flow(state) 1
2772	set _settings($this-currenttime) 0
2773	$itk_component(play) select
2774	}
2775	"stop" {
2776	if { $_flow(state) } {
2777	flow off
2778	flow reset
2779	}
2780	}
2781	"pause" {
2782	if { $_flow(state) } {
2783	flow off
2784	}
2785	}
2786	"play" {
2787	# If the flow is currently off, then restart it.
2788	if { !$_flow(state) } {
2789	flow on
2790	# If we're at the end of the flow, reset the flow.
2791	set _settings($this-currenttime) \
2792	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2793	if { $_settings($this-currenttime) >= $_flow(duration) } {
2794	set _settings($this-step) 1
2795	SendCmd "flow reset"
2796	}
2797	flow next
2798	}
2799	}
2800	"toggle" {
2801	if { $_settings($this-play) } {
2802	flow play
2803	} else {
2804	flow pause
2805	}
2806	}
2807	"reset" {
2808	set _settings($this-currenttime) 0
2809	SendCmd "flow reset"
2810	}
2811	"next" {
2812	if { ![winfo viewable $itk_component(3dview)] } {
2813	flow stop
2814	return
2815	}
2816	set _settings($this-currenttime) \
2817	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2818	if { $_settings($this-currenttime) >= $_flow(duration) } {
2819	if { !$_settings($this-loop) } {
2820	flow off
2821	return
2822	}
2823	flow reset
2824	} else {
2825	SendCmd "flow next"
2826	}
2827	$_dispatcher event -after $_flow(delay) !play
2828	}
2829	default {
2830	error "bad option \"$option\": should be play, stop, toggle, or reset."
2831	}
2832	}
2833	}
2834
2835	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2836	switch -- $option {
2837	"start" {
2838	$_dispatcher dispatch $this !waiticon \
2839	"[itcl::code $this WaitIcon "next" $widget] ; list"
2840	set _icon 0
2841	$widget configure -image [Rappture::icon bigroller${_icon}]
2842	$_dispatcher event -after 100 !waiticon
2843	}
2844	"next" {
2845	incr _icon
2846	if { $_icon >= 8 } {
2847	set _icon 0
2848	}
2849	$widget configure -image [Rappture::icon bigroller${_icon}]
2850	$_dispatcher event -after 100 !waiticon
2851	}
2852	"stop" {
2853	$_dispatcher cancel !waiticon
2854	}
2855	}
2856	}
2857
2858	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2859	set token "print[incr _nextToken]"
2860	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2861	set $var ""
2862
2863	# Setup an automatic timeout procedure.
2864	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2865
2866	set popup .flowvisviewerprint
2867	if {![winfo exists $popup]} {
2868	Rappture::Balloon $popup -title "Generating file..."
2869	set inner [$popup component inner]
2870	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2871	label $inner.please -text "This may take a minute." -font "Arial 10"
2872	label $inner.icon -image [Rappture::icon bigroller0]
2873	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2874	-command [list set $var ""]
2875	blt::table $inner \
2876	0,0 $inner.title -cspan 2 \
2877	1,0 $inner.please -anchor w \
2878	1,1 $inner.icon -anchor e \
2879	2,0 $inner.cancel -cspan 2
2880	blt::table configure $inner r0 -pady 4
2881	blt::table configure $inner r2 -pady 4
2882	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2883	} else {
2884	set inner [$popup component inner]
2885	}
2886
2887	$_dispatcher event -after 60000 !pngtimeout
2888	WaitIcon start $inner.icon
2889	grab set $inner
2890	focus $inner.cancel
2891
2892	SendCmd "print $token $width $height"
2893
2894	$popup activate $widget below
2895	update idletasks
2896	update
2897	# We wait here for either
2898	# 1) the png to be delivered or
2899	# 2) timeout or
2900	# 3) user cancels the operation.
2901	tkwait variable $var
2902
2903	# Clean up.
2904	$_dispatcher cancel !pngtimeout
2905	WaitIcon stop $inner.icon
2906	grab release $inner
2907	$popup deactivate
2908	update
2909
2910	if { $_hardcopy($this-$token) != "" } {
2911	return [list .png $_hardcopy($this-$token)]
2912	}
2913	return ""
2914	}
2915
2916	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2917	set token "movie[incr _nextToken]"
2918	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2919	set $var ""
2920
2921	# Setup an automatic timeout procedure.
2922	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2923	set popup .flowvisviewermovie
2924	if {![winfo exists $popup]} {
2925	Rappture::Balloon $popup -title "Generating movie..."
2926	set inner [$popup component inner]
2927	label $inner.title -text "Generating movie for download" \
2928	-font "Arial 10 bold"
2929	label $inner.please -text "This may take a few minutes." \
2930	-font "Arial 10"
2931	label $inner.icon -image [Rappture::icon bigroller0]
2932	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2933	-command [list set $var ""]
2934	blt::table $inner \
2935	0,0 $inner.title -cspan 2 \
2936	1,0 $inner.please -anchor w \
2937	1,1 $inner.icon -anchor e \
2938	2,0 $inner.cancel -cspan 2
2939	blt::table configure $inner r0 -pady 4
2940	blt::table configure $inner r2 -pady 4
2941	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2942	} else {
2943	set inner [$popup component inner]
2944	}
2945	update
2946	# Timeout is set to 10 minutes.
2947	$_dispatcher event -after 600000 !movietimeout
2948	WaitIcon start $inner.icon
2949	grab set $inner
2950	focus $inner.cancel
2951
2952	flow duration
2953	flow speed
2954	set nframes [expr round($_flow(duration) / $_flow(delay))]
2955	set framerate [expr 1000.0 / $_flow(delay)]
2956
2957	# These are specific to MPEG1 video generation
2958	set framerate 25.0
2959	set bitrate 6.0e+6
2960
2961	set start [clock seconds]
2962	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2963
2964	$popup activate $widget below
2965	update idletasks
2966	update
2967	# We wait here until
2968	# 1. the movie is delivered or
2969	# 2. we've timed out or
2970	# 3. the user has canceled the operation.b
2971	tkwait variable $var
2972
2973	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2974
2975	# Clean up.
2976	$_dispatcher cancel !movietimeout
2977	WaitIcon stop $inner.icon
2978	grab release $inner
2979	$popup deactivate
2980	destroy $popup
2981	update
2982
2983	# This will both cancel the movie generation (if it hasn't already
2984	# completed) and reset the flow.
2985	SendCmd "flow reset"
2986	if { $_hardcopy($this-$token) != "" } {
2987	return [list .mpg $_hardcopy($this-$token)]
2988	}
2989	return ""
2990	}
2991
2992	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2993	set parts [split $value :]
2994	set secs 0
2995	set mins 0
2996	if { [llength $parts] == 1 } {
2997	scan [lindex $parts 0] "%d" secs
2998	} else {
2999	scan [lindex $parts 1] "%d" secs
3000	scan [lindex $parts 0] "%d" mins
3001	}
3002	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
3003	if { $ms > 600000.0 } {
3004	set ms 600000.0
3005	}
3006	if { $ms == 0.0 } {
3007	set ms 60000.0
3008	}
3009	return $ms
3010	}
3011
3012	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
3013	set min [expr floor($value / 60000.0)]
3014	set sec [expr ($value - ($min*60000.0)) / 1000.0]
3015	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
3016	}
3017
3018	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
3019	array set positions {
3020	front "1 0 0 0"
3021	back "0 0 1 0"
3022	left "0.707107 0 -0.707107 0"
3023	right "0.707107 0 0.707107 0"
3024	top "0.707107 -0.707107 0 0"
3025	bottom "0.707107 0.707107 0 0"
3026	}
3027	foreach name { qw qx qy qz } value $positions($side) {
3028	set _view($name) $value
3029	}
3030	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3031	$_arcball quaternion $q
3032	SendCmd "camera orient $q"
3033	SendCmd "camera reset"
3034	set _view(xpan) 0.0
3035	set _view(ypan) 0.0
3036	set _view(zoom) 1.0
3037	set _settings($this-xpan) $_view(xpan)
3038	set _settings($this-ypan) $_view(ypan)
3039	set _settings($this-zoom) $_view(zoom)
3040	}

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