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source: trunk/gui/scripts/flowvisviewer.tcl @ 3592

Last change on this file since 3592 was 3592, checked in by ldelgass, 11 years ago
Report clientinfo first thing after connecting to visualization server.
File size: 104.3 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: flowvisviewer - 3D flow rendering
4	#
5	#
6	# This widget performs volume and flow rendering on 3D scalar/vector datasets.
7	# It connects to the Flowvis server running on a rendering farm, transmits
8	# data, and displays the results.
9	#
10	# ======================================================================
11	# AUTHOR: Michael McLennan, Purdue University
12	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
13	#
14	# See the file "license.terms" for information on usage and redistribution of
15	# this file, and for a DISCLAIMER OF ALL WARRANTIES.
16	# ======================================================================
17	package require Itk
18	package require BLT
19	package require Img
20
21	option add *FlowvisViewer.width 5i widgetDefault
22	option add FlowvisViewercursor crosshair widgetDefault
23	option add *FlowvisViewer.height 4i widgetDefault
24	option add *FlowvisViewer.foreground black widgetDefault
25	option add *FlowvisViewer.controlBackground gray widgetDefault
26	option add *FlowvisViewer.controlDarkBackground #999999 widgetDefault
27	option add *FlowvisViewer.plotBackground black widgetDefault
28	option add *FlowvisViewer.plotForeground white widgetDefault
29	option add *FlowvisViewer.plotOutline gray widgetDefault
30	option add *FlowvisViewer.font \
31	--helvetica-medium-r-normal--12-* widgetDefault
32
33	# must use this name -- plugs into Rappture::resources::load
34	proc FlowvisViewer_init_resources {} {
35	Rappture::resources::register \
36	nanovis_server Rappture::FlowvisViewer::SetServerList
37	}
38
39	itcl::class Rappture::FlowvisViewer {
40	inherit Rappture::VisViewer
41
42	itk_option define -plotforeground plotForeground Foreground ""
43	itk_option define -plotbackground plotBackground Background ""
44	itk_option define -plotoutline plotOutline PlotOutline ""
45
46	constructor { hostlist args } {
47	Rappture::VisViewer::constructor $hostlist
48	} {
49	# defined below
50	}
51	destructor {
52	# defined below
53	}
54	public proc SetServerList { namelist } {
55	Rappture::VisViewer::SetServerList "nanovis" $namelist
56	}
57	public method add {dataobj {settings ""}}
58	public method camera {option args}
59	public method delete {args}
60	public method disconnect {}
61	public method download {option args}
62	public method flow {option}
63	public method get {args}
64	public method isconnected {}
65	public method limits { tf }
66	public method overmarker { m x }
67	public method parameters {title args} {
68	# do nothing
69	}
70	public method rmdupmarker { m x }
71	public method scale {args}
72	public method updatetransferfuncs {}
73
74	protected method Connect {}
75	protected method CurrentVolumeIds {{what -all}}
76	protected method Disconnect {}
77	protected method Resize {}
78	protected method ResizeLegend {}
79	protected method AdjustSetting {what {value ""}}
80	protected method InitSettings { args }
81	protected method Pan {option x y}
82	protected method Rebuild {}
83	protected method ReceiveData { args }
84	protected method ReceiveImage { args }
85	protected method ReceiveLegend { tf vmin vmax size }
86	protected method Rotate {option x y}
87	protected method SendDataObjs {}
88	protected method SendTransferFuncs {}
89	protected method Slice {option args}
90	protected method SlicerTip {axis}
91	protected method Zoom {option}
92
93	# soon to be removed.
94	protected method Flow {option args}
95	protected method Play {}
96	protected method Pause {}
97
98
99	# The following methods are only used by this class.
100
101	private method AddIsoMarker { x y }
102	private method BuildCameraTab {}
103	private method BuildCutplanesTab {}
104	private method BuildViewTab {}
105	private method BuildVolumeTab {}
106	private method ComputeTransferFunc { tf }
107	private method EventuallyResize { w h }
108	private method EventuallyGoto { nSteps }
109	private method EventuallyResizeLegend { }
110	private method FlowCmd { dataobj comp nbytes extents }
111	private method GetMovie { widget width height }
112	private method GetPngImage { widget width height }
113	private method NameTransferFunc { dataobj comp }
114	private method PanCamera {}
115	private method ParseLevelsOption { tf levels }
116	private method ParseMarkersOption { tf markers }
117	private method WaitIcon { option widget }
118	private method str2millisecs { value }
119	private method millisecs2str { value }
120	private method GetFlowInfo { widget }
121	private method particles { tag name }
122	private method box { tag name }
123	private method streams { tag name }
124	private method arrows { tag name }
125	private method SetOrientation { side }
126
127	private variable _arcball ""
128	private variable _dlist "" ;# list of data objects
129	private variable _allDataObjs
130	private variable _obj2ovride ;# maps dataobj => style override
131	private variable _serverObjs ;# maps dataobj-component to volume ID
132	# in the server
133	private variable _sendobjs "" ;# list of data objs to send to server
134	private variable _recvObjs ;# list of data objs to send to server
135	private variable _obj2style ;# maps dataobj-component to transfunc
136	private variable _style2objs ;# maps tf back to list of
137	# dataobj-components using the tf.
138	private variable _obj2flow; # Maps dataobj-component to a flow.
139
140	private variable _reset 1; # Connection to server has been reset
141	private variable _click ;# info used for rotate operations
142	private variable _limits ;# autoscale min/max for all axes
143	private variable _view ;# view params for 3D view
144	private variable _isomarkers ;# array of isosurface level values 0..1
145	private common _settings
146	private variable _activeTf "" ;# The currently active transfer function.
147	private variable _first "" ;# This is the topmost volume.
148	private variable _nextToken 0
149	private variable _icon 0
150	private variable _flow
151	# This
152	# indicates which isomarkers and transfer
153	# function to use when changing markers,
154	# opacity, or thickness.
155	private common _downloadPopup ;# download options from popup
156
157	private common _hardcopy
158	private variable _width 0
159	private variable _height 0
160	private variable _resizePending 0
161	private variable _resizeLegendPending 0
162	private variable _gotoPending 0
163	}
164
165	itk::usual FlowvisViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
174	set _serverType "nanovis"
175
176	# Draw legend event
177	$_dispatcher register !legend
178	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
179
180	# Send dataobjs event
181	$_dispatcher register !send_dataobjs
182	$_dispatcher dispatch $this !send_dataobjs \
183	"[itcl::code $this SendDataObjs]; list"
184
185	# Send transferfunctions event
186	$_dispatcher register !send_transfunc
187	$_dispatcher dispatch $this !send_transfunc \
188	"[itcl::code $this SendTransferFuncs]; list"
189
190	# Rebuild event.
191	$_dispatcher register !rebuild
192	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
193
194	# Resize event.
195	$_dispatcher register !resize
196	$_dispatcher dispatch $this !resize "[itcl::code $this Resize]; list"
197
198	$_dispatcher register !play
199	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
200
201	# Draw legend event
202	$_dispatcher register !goto
203	$_dispatcher dispatch $this !goto "[itcl::code $this flow goto2]; list"
204
205	$_dispatcher register !movietimeout
206	$_dispatcher register !waiticon
207
208	set _flow(state) 0
209
210	array set _downloadPopup {
211	format draft
212	}
213	#
214	# Populate parser with commands handle incoming requests
215	#
216	$_parser alias image [itcl::code $this ReceiveImage]
217	$_parser alias legend [itcl::code $this ReceiveLegend]
218	$_parser alias data [itcl::code $this ReceiveData]
219
220	# Initialize the view to some default parameters.
221	array set _view {
222	qw 0.853553
223	qx -0.353553
224	qy 0.353553
225	qz 0.146447
226	zoom 1.0
227	xpan 0
228	ypan 0
229	}
230	set _arcball [blt::arcball create 100 100]
231	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
232	$_arcball quaternion $q
233
234	set _limits(vmin) 0.0
235	set _limits(vmax) 1.0
236	set _reset 1
237
238	array set _settings [subst {
239	$this-qw $_view(qw)
240	$this-qx $_view(qx)
241	$this-qy $_view(qy)
242	$this-qz $_view(qz)
243	$this-zoom $_view(zoom)
244	$this-xpan $_view(xpan)
245	$this-ypan $_view(ypan)
246	$this-arrows 0
247	$this-currenttime 0
248	$this-duration 1:00
249	$this-loop 0
250	$this-play 0
251	$this-speed 500
252	$this-step 0
253	$this-streams 0
254	$this-volume 1
255	$this-xcutplane 0
256	$this-xcutposition 0
257	$this-ycutplane 0
258	$this-ycutposition 0
259	$this-zcutplane 0
260	$this-zcutposition 0
261	}]
262
263	itk_component add 3dview {
264	label $itk_component(plotarea).view -image $_image(plot) \
265	-highlightthickness 0 -borderwidth 0
266	} {
267	usual
268	ignore -highlightthickness -borderwidth -background
269	}
270	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
271
272	set f [$itk_component(main) component controls]
273	itk_component add reset {
274	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
275	-highlightthickness 0 \
276	-image [Rappture::icon reset-view] \
277	-command [itcl::code $this Zoom reset]
278	} {
279	usual
280	ignore -highlightthickness
281	}
282	pack $itk_component(reset) -side top -padx 2 -pady 2
283	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
284
285	itk_component add zoomin {
286	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon zoom-in] \
289	-command [itcl::code $this Zoom in]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(zoomin) -side top -padx 2 -pady 2
295	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
296
297	itk_component add zoomout {
298	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-out] \
301	-command [itcl::code $this Zoom out]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomout) -side top -padx 2 -pady 2
307	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
308
309	itk_component add volume {
310	Rappture::PushButton $f.volume \
311	-onimage [Rappture::icon volume-on] \
312	-offimage [Rappture::icon volume-off] \
313	-command [itcl::code $this AdjustSetting volume] \
314	-variable [itcl::scope _settings($this-volume)]
315	}
316	$itk_component(volume) select
317	Rappture::Tooltip::for $itk_component(volume) \
318	"Toggle the volume cloud on/off"
319	pack $itk_component(volume) -padx 2 -pady 2
320
321	if { [catch {
322	BuildViewTab
323	BuildVolumeTab
324	BuildCutplanesTab
325	BuildCameraTab
326	} errs] != 0 } {
327	global errorInfo
328	puts stderr "errs=$errs errorInfo=$errorInfo"
329	}
330
331	bind $itk_component(3dview) <Configure> \
332	[itcl::code $this EventuallyResize %w %h]
333
334	# Legend
335	set _image(legend) [image create photo]
336	itk_component add legend {
337	canvas $itk_component(plotarea).legend \
338	-height 50 -highlightthickness 0 -background black
339	} {
340	usual
341	ignore -highlightthickness
342	rename -background -plotbackground plotBackground Background
343	}
344	bind $itk_component(legend) <Configure> \
345	[itcl::code $this EventuallyResizeLegend]
346
347	# Hack around the Tk panewindow. The problem is that the requested
348	# size of the 3d view isn't set until an image is retrieved from
349	# the server. So the panewindow uses the tiny size.
350	set w 10000
351	pack forget $itk_component(3dview)
352	blt::table $itk_component(plotarea) \
353	0,0 $itk_component(3dview) -fill both -reqwidth $w \
354	1,0 $itk_component(legend) -fill x
355	blt::table configure $itk_component(plotarea) r1 -resize none
356	# Create flow controls...
357
358	itk_component add flowcontrols {
359	frame $itk_interior.flowcontrols
360	} {
361	usual
362	rename -background -controlbackground controlBackground Background
363	}
364	pack forget $itk_component(main)
365	blt::table $itk_interior \
366	0,0 $itk_component(main) -fill both \
367	1,0 $itk_component(flowcontrols) -fill x
368	blt::table configure $itk_interior r1 -resize none
369
370	# Rewind
371	itk_component add rewind {
372	button $itk_component(flowcontrols).reset \
373	-borderwidth 1 -padx 1 -pady 1 \
374	-image [Rappture::icon flow-rewind] \
375	-command [itcl::code $this flow reset]
376	} {
377	usual
378	ignore -borderwidth
379	rename -highlightbackground -controlbackground controlBackground \
380	Background
381	}
382	Rappture::Tooltip::for $itk_component(rewind) \
383	"Rewind flow"
384
385	# Stop
386	itk_component add stop {
387	button $itk_component(flowcontrols).stop \
388	-borderwidth 1 -padx 1 -pady 1 \
389	-image [Rappture::icon flow-stop] \
390	-command [itcl::code $this flow stop]
391	} {
392	usual
393	ignore -borderwidth
394	rename -highlightbackground -controlbackground controlBackground \
395	Background
396	}
397	Rappture::Tooltip::for $itk_component(stop) \
398	"Stop flow"
399
400	# Play
401	itk_component add play {
402	Rappture::PushButton $itk_component(flowcontrols).play \
403	-onimage [Rappture::icon flow-pause] \
404	-offimage [Rappture::icon flow-play] \
405	-variable [itcl::scope _settings($this-play)] \
406	-command [itcl::code $this flow toggle]
407	}
408	set fg [option get $itk_component(hull) font Font]
409	Rappture::Tooltip::for $itk_component(play) \
410	"Play/Pause flow"
411
412	# Loop
413	itk_component add loop {
414	Rappture::PushButton $itk_component(flowcontrols).loop \
415	-onimage [Rappture::icon flow-loop] \
416	-offimage [Rappture::icon flow-loop] \
417	-variable [itcl::scope _settings($this-loop)]
418	}
419	Rappture::Tooltip::for $itk_component(loop) \
420	"Play continuously"
421
422	itk_component add dial {
423	Rappture::Flowdial $itk_component(flowcontrols).dial \
424	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
425	-linecolor "" -activelinecolor "" \
426	-min 0.0 -max 1.0 \
427	-variable [itcl::scope _settings($this-currenttime)] \
428	-knobimage [Rappture::icon knob2] -knobposition center@middle
429	} {
430	usual
431	ignore -dialprogresscolor
432	rename -background -controlbackground controlBackground Background
433	}
434	$itk_component(dial) current 0.0
435	bind $itk_component(dial) <<Value>> [itcl::code $this flow goto]
436	# Duration
437	itk_component add duration {
438	entry $itk_component(flowcontrols).duration \
439	-textvariable [itcl::scope _settings($this-duration)] \
440	-bg white -width 6 -font "arial 9"
441	} {
442	usual
443	ignore -highlightthickness -background
444	}
445	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
446	bind $itk_component(duration) <KP_Enter> [itcl::code $this flow duration]
447	bind $itk_component(duration) <Tab> [itcl::code $this flow duration]
448	Rappture::Tooltip::for $itk_component(duration) \
449	"Set duration of flow (format is min:sec)"
450
451
452	itk_component add durationlabel {
453	label $itk_component(flowcontrols).durationl \
454	-text "Duration:" -font $fg \
455	-highlightthickness 0
456	} {
457	usual
458	ignore -highlightthickness
459	rename -background -controlbackground controlBackground Background
460	}
461
462	itk_component add speedlabel {
463	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
464	-highlightthickness 0
465	} {
466	usual
467	ignore -highlightthickness
468	rename -background -controlbackground controlBackground Background
469	}
470
471	# Speed
472	itk_component add speed {
473	Rappture::Flowspeed $itk_component(flowcontrols).speed \
474	-min 1 -max 10 -width 3 -font "arial 9"
475	} {
476	usual
477	ignore -highlightthickness
478	rename -background -controlbackground controlBackground Background
479	}
480	Rappture::Tooltip::for $itk_component(speed) \
481	"Change speed of flow"
482
483	$itk_component(speed) value 1
484	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
485
486
487	blt::table $itk_component(flowcontrols) \
488	0,0 $itk_component(rewind) -padx {3 0} \
489	0,1 $itk_component(stop) -padx {2 0} \
490	0,2 $itk_component(play) -padx {2 0} \
491	0,3 $itk_component(loop) -padx {2 0} \
492	0,4 $itk_component(dial) -fill x -padx {2 0 } \
493	0,5 $itk_component(duration) -padx { 0 0} \
494	0,7 $itk_component(speed) -padx {2 3}
495
496	# 0,6 $itk_component(speedlabel) -padx {2 0}
497	blt::table configure $itk_component(flowcontrols) c* -resize none
498	blt::table configure $itk_component(flowcontrols) c4 -resize both
499	blt::table configure $itk_component(flowcontrols) r0 -pady 1
500	# Bindings for rotation via mouse
501	bind $itk_component(3dview) <ButtonPress-1> \
502	[itcl::code $this Rotate click %x %y]
503	bind $itk_component(3dview) <B1-Motion> \
504	[itcl::code $this Rotate drag %x %y]
505	bind $itk_component(3dview) <ButtonRelease-1> \
506	[itcl::code $this Rotate release %x %y]
507
508	bind $itk_component(3dview) <Configure> \
509	[itcl::code $this EventuallyResize %w %h]
510
511	# Bindings for panning via mouse
512	bind $itk_component(3dview) <ButtonPress-2> \
513	[itcl::code $this Pan click %x %y]
514	bind $itk_component(3dview) <B2-Motion> \
515	[itcl::code $this Pan drag %x %y]
516	bind $itk_component(3dview) <ButtonRelease-2> \
517	[itcl::code $this Pan release %x %y]
518
519	# Bindings for panning via keyboard
520	bind $itk_component(3dview) <KeyPress-Left> \
521	[itcl::code $this Pan set -10 0]
522	bind $itk_component(3dview) <KeyPress-Right> \
523	[itcl::code $this Pan set 10 0]
524	bind $itk_component(3dview) <KeyPress-Up> \
525	[itcl::code $this Pan set 0 -10]
526	bind $itk_component(3dview) <KeyPress-Down> \
527	[itcl::code $this Pan set 0 10]
528	bind $itk_component(3dview) <Shift-KeyPress-Left> \
529	[itcl::code $this Pan set -2 0]
530	bind $itk_component(3dview) <Shift-KeyPress-Right> \
531	[itcl::code $this Pan set 2 0]
532	bind $itk_component(3dview) <Shift-KeyPress-Up> \
533	[itcl::code $this Pan set 0 -2]
534	bind $itk_component(3dview) <Shift-KeyPress-Down> \
535	[itcl::code $this Pan set 0 2]
536
537	# Bindings for zoom via keyboard
538	bind $itk_component(3dview) <KeyPress-Prior> \
539	[itcl::code $this Zoom out]
540	bind $itk_component(3dview) <KeyPress-Next> \
541	[itcl::code $this Zoom in]
542
543	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
544
545	if {[string equal "x11" [tk windowingsystem]]} {
546	# Bindings for zoom via mouse
547	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
548	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
549	}
550
551	set _image(download) [image create photo]
552
553	eval itk_initialize $args
554
555	Connect
556	}
557
558	# ----------------------------------------------------------------------
559	# DESTRUCTOR
560	# ----------------------------------------------------------------------
561	itcl::body Rappture::FlowvisViewer::destructor {} {
562	set _sendobjs "" ;# stop any send in progress
563	$_dispatcher cancel !rebuild
564	$_dispatcher cancel !send_dataobjs
565	$_dispatcher cancel !send_transfunc
566	image delete $_image(plot)
567	image delete $_image(legend)
568	image delete $_image(download)
569	catch { blt::arcball destroy $_arcball }
570	array unset _settings $this-*
571	}
572
573	# ----------------------------------------------------------------------
574	# USAGE: add <dataobj> ?<settings>?
575	#
576	# Clients use this to add a data object to the plot. The optional
577	# <settings> are used to configure the plot. Allowed settings are
578	# -color, -brightness, -width, -linestyle, and -raise.
579	# ----------------------------------------------------------------------
580	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
581	array set params {
582	-color auto
583	-width 1
584	-linestyle solid
585	-brightness 0
586	-raise 0
587	-description ""
588	-param ""
589	}
590	foreach {opt val} $settings {
591	if {![info exists params($opt)]} {
592	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
593	}
594	set params($opt) $val
595	}
596	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
597	# can't handle -autocolors yet
598	set params(-color) black
599	}
600	foreach comp [$dataobj components] {
601	set flowobj [$dataobj flowhints $comp]
602	if { $flowobj == "" } {
603	puts stderr "no flowhints $dataobj-$comp"
604	continue
605	}
606	set _obj2flow($dataobj-$comp) $flowobj
607	}
608	set pos [lsearch -exact $dataobj $_dlist]
609	if {$pos < 0} {
610	lappend _dlist $dataobj
611	set _allDataObjs($dataobj) 1
612	set _obj2ovride($dataobj-color) $params(-color)
613	set _obj2ovride($dataobj-width) $params(-width)
614	set _obj2ovride($dataobj-raise) $params(-raise)
615	$_dispatcher event -idle !rebuild
616	}
617	}
618
619	# ----------------------------------------------------------------------
620	# USAGE: get ?-objects?
621	# USAGE: get ?-image 3dview\|legend?
622	#
623	# Clients use this to query the list of objects being plotted, in
624	# order from bottom to top of this result. The optional "-image"
625	# flag can also request the internal images being shown.
626	# ----------------------------------------------------------------------
627	itcl::body Rappture::FlowvisViewer::get {args} {
628	if {[llength $args] == 0} {
629	set args "-objects"
630	}
631
632	set op [lindex $args 0]
633	switch -- $op {
634	-objects {
635	# put the dataobj list in order according to -raise options
636	set dlist $_dlist
637	foreach obj $dlist {
638	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
639	set i [lsearch -exact $dlist $obj]
640	if {$i >= 0} {
641	set dlist [lreplace $dlist $i $i]
642	lappend dlist $obj
643	}
644	}
645	}
646	return $dlist
647	}
648	-image {
649	if {[llength $args] != 2} {
650	error "wrong # args: should be \"get -image 3dview\|legend\""
651	}
652	switch -- [lindex $args end] {
653	3dview {
654	return $_image(plot)
655	}
656	legend {
657	return $_image(legend)
658	}
659	default {
660	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
661	}
662	}
663	}
664	default {
665	error "bad option \"$op\": should be -objects or -image"
666	}
667	}
668	}
669
670	# ----------------------------------------------------------------------
671	# USAGE: delete ?<dataobj1> <dataobj2> ...?
672	#
673	# Clients use this to delete a dataobj from the plot. If no dataobjs
674	# are specified, then all dataobjs are deleted. No data objects are
675	# deleted. They are only removed from the display list.
676	#
677	# ----------------------------------------------------------------------
678	itcl::body Rappture::FlowvisViewer::delete {args} {
679	flow stop
680	if {[llength $args] == 0} {
681	set args $_dlist
682	}
683
684	# Delete all specified dataobjs
685	set changed 0
686	foreach dataobj $args {
687	set pos [lsearch -exact $_dlist $dataobj]
688	if { $pos >= 0 } {
689	foreach comp [$dataobj components] {
690	array unset _limits $dataobj-$comp-*
691	}
692	set _dlist [lreplace $_dlist $pos $pos]
693	array unset _obj2ovride $dataobj-*
694	array unset _obj2flow $dataobj-*
695	array unset _serverObjs $dataobj-*
696	array unset _obj2style $dataobj-*
697	set changed 1
698	}
699	}
700	# If anything changed, then rebuild the plot
701	if {$changed} {
702	# Repair the reverse lookup
703	foreach tf [array names _style2objs] {
704	set list {}
705	foreach {dataobj comp} $_style2objs($tf) break
706	if { [info exists _serverObjs($dataobj-$comp)] } {
707	lappend list $dataobj $comp
708	}
709	if { $list == "" } {
710	array unset _style2objs $tf
711	} else {
712	set _style2objs($tf) $list
713	}
714	}
715	$_dispatcher event -idle !rebuild
716	}
717	}
718
719	# ----------------------------------------------------------------------
720	# USAGE: scale ?<data1> <data2> ...?
721	#
722	# Sets the default limits for the overall plot according to the
723	# limits of the data for all of the given <data> objects. This
724	# accounts for all objects--even those not showing on the screen.
725	# Because of this, the limits are appropriate for all objects as
726	# the user scans through data in the ResultSet viewer.
727	# ----------------------------------------------------------------------
728	itcl::body Rappture::FlowvisViewer::scale {args} {
729	foreach val {xmin xmax ymin ymax vmin vmax} {
730	set _limits($val) ""
731	}
732	foreach obj $args {
733	foreach axis {x y v} {
734
735	foreach { min max } [$obj limits $axis] break
736
737	if {"" != $min && "" != $max} {
738	if {"" == $_limits(${axis}min)} {
739	set _limits(${axis}min) $min
740	set _limits(${axis}max) $max
741	} else {
742	if {$min < $_limits(${axis}min)} {
743	set _limits(${axis}min) $min
744	}
745	if {$max > $_limits(${axis}max)} {
746	set _limits(${axis}max) $max
747	}
748	}
749	}
750	}
751	}
752	}
753
754	# ----------------------------------------------------------------------
755	# USAGE: download coming
756	# USAGE: download controls <downloadCommand>
757	# USAGE: download now
758	#
759	# Clients use this method to create a downloadable representation
760	# of the plot. Returns a list of the form {ext string}, where
761	# "ext" is the file extension (indicating the type of data) and
762	# "string" is the data itself.
763	# ----------------------------------------------------------------------
764	itcl::body Rappture::FlowvisViewer::download {option args} {
765	set popup .flowvisviewerdownload
766	switch $option {
767	coming {
768	if {[catch {
769	blt::winop snap $itk_component(plotarea) $_image(download)
770	}]} {
771	$_image(download) configure -width 1 -height 1
772	$_image(download) put #000000
773	}
774	}
775	controls {
776	if {![winfo exists $popup]} {
777	# if we haven't created the popup yet, do it now
778	Rappture::Balloon $popup \
779	-title "[Rappture::filexfer::label downloadWord] as..."
780	set inner [$popup component inner]
781	label $inner.summary -text "" -anchor w
782	pack $inner.summary -side top
783	set img $_image(plot)
784	set res "[image width $img]x[image height $img]"
785	radiobutton $inner.draft -text "Image (draft $res)" \
786	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
787	-value draft
788	pack $inner.draft -anchor w
789
790	set res "640x480"
791	radiobutton $inner.medium -text "Movie (standard $res)" \
792	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
793	-value $res
794	pack $inner.medium -anchor w
795
796	set res "1024x768"
797	radiobutton $inner.high -text "Movie (high quality $res)" \
798	-variable Rappture::FlowvisViewer::_downloadPopup(format) \
799	-value $res
800	pack $inner.high -anchor w
801	button $inner.go -text [Rappture::filexfer::label download] \
802	-command [lindex $args 0]
803	pack $inner.go -pady 4
804	$inner.draft select
805	} else {
806	set inner [$popup component inner]
807	}
808	set num [llength [get]]
809	set num [expr {($num == 1) ? "1 result" : "$num results"}]
810	set word [Rappture::filexfer::label downloadWord]
811	$inner.summary configure -text "$word $num in the following format:"
812	update idletasks ;# fix initial sizes
813	update
814	return $popup
815	}
816	now {
817	if { [winfo exists $popup] } {
818	$popup deactivate
819	}
820	switch -- $_downloadPopup(format) {
821	draft {
822	# Get the image data (as base64) and decode it back to
823	# binary. This is better than writing to temporary
824	# files. When we switch to the BLT picture image it
825	# won't be necessary to decode the image data.
826	set bytes [$_image(plot) data -format "jpeg -quality 100"]
827	set bytes [Rappture::encoding::decode -as b64 $bytes]
828	return [list .jpg $bytes]
829	}
830	"640x480" {
831	return [$this GetMovie [lindex $args 0] 640 480]
832	}
833	"1024x768" {
834	return [$this GetMovie [lindex $args 0] 1024 768]
835	}
836	default {
837	error "bad download format $_downloadPopup(format)"
838	}
839	}
840	}
841	default {
842	error "bad option \"$option\": should be coming, controls, now"
843	}
844	}
845	}
846
847	# ----------------------------------------------------------------------
848	# USAGE: Connect ?<host:port>,<host:port>...?
849	#
850	# Clients use this method to establish a connection to a new
851	# server, or to reestablish a connection to the previous server.
852	# Any existing connection is automatically closed.
853	# ----------------------------------------------------------------------
854	itcl::body Rappture::FlowvisViewer::Connect {} {
855	set _hosts [GetServerList "nanovis"]
856	if { "" == $_hosts } {
857	return 0
858	}
859	set _reset 1
860	set result [VisViewer::Connect $_hosts]
861	if { $result } {
862	if { $_reportClientInfo } {
863	# Tell the server the viewer, hub, user and session.
864	# Do this immediately on connect before buffing any commands
865	global env
866
867	set info {}
868	set user "???"
869	if { [info exists env(USER)] } {
870	set user $env(USER)
871	}
872	set session "???"
873	if { [info exists env(SESSION)] } {
874	set session $env(SESSION)
875	}
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	$_dispatcher event -idle !rebuild
1183	return
1184	}
1185
1186	# Turn on buffering of commands to the server. We don't want to
1187	# be preempted by a server disconnect/reconnect (which automatically
1188	# generates a new call to Rebuild).
1189	StartBufferingCommands
1190
1191	# Hide all the isomarkers. Can't remove them. Have to remember the
1192	# settings since the user may have created/deleted/moved markers.
1193
1194	foreach tf [array names _isomarkers] {
1195	foreach m $_isomarkers($tf) {
1196	$m visible no
1197	}
1198	}
1199
1200	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1201	set _width $w
1202	set _height $h
1203	$_arcball resize $w $h
1204	Resize
1205	}
1206
1207	set _first ""
1208	foreach dataobj [get] {
1209	foreach comp [$dataobj components] {
1210	set tag $dataobj-$comp
1211	# Send the data as one huge base64-encoded mess -- yuck!
1212	set data [$dataobj blob $comp]
1213	set nbytes [string length $data]
1214	if { $_reportClientInfo } {
1215	set info {}
1216	lappend info "tool_id" [$dataobj hints toolId]
1217	lappend info "tool_name" [$dataobj hints toolName]
1218	lappend info "tool_version" [$dataobj hints toolRevision]
1219	lappend info "tool_title" [$dataobj hints toolTitle]
1220	lappend info "dataset_label" [$dataobj hints label]
1221	lappend info "dataset_size" $nbytes
1222	lappend info "dataset_tag" $tag
1223	SendCmd "clientinfo [list $info]"
1224	}
1225	set extents [$dataobj extents $comp]
1226	# I have a field. Is a vector field or a volume field?
1227	if { $extents == 1 } {
1228	set cmd "volume data follows $nbytes $tag\n"
1229	} else {
1230	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1231	if { $cmd == "" } {
1232	puts stderr "no command"
1233	continue
1234	}
1235	}
1236	append _outbuf $cmd
1237	append _outbuf $data
1238	NameTransferFunc $dataobj $comp
1239	set _recvObjs($tag) 1
1240	}
1241	}
1242
1243	set _first [lindex [get] 0]
1244
1245	# Reset the camera and other view parameters
1246	InitSettings light2side light transp isosurface grid axes volume outline
1247
1248	# nothing to send -- activate the proper volume
1249	if {"" != $_first} {
1250	AdjustSetting light
1251	AdjustSetting transp
1252	set axis [$_first hints updir]
1253	if {"" != $axis} {
1254	SendCmd "up $axis"
1255	}
1256	set location [$_first hints camera]
1257	if { $location != "" } {
1258	array set _view $location
1259	}
1260
1261	}
1262	set _settings($this-qw) $_view(qw)
1263	set _settings($this-qx) $_view(qx)
1264	set _settings($this-qy) $_view(qy)
1265	set _settings($this-qz) $_view(qz)
1266	set _settings($this-xpan) $_view(xpan)
1267	set _settings($this-ypan) $_view(ypan)
1268	set _settings($this-zoom) $_view(zoom)
1269
1270	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1271	$_arcball quaternion $q
1272	SendCmd "camera orient $q"
1273	SendCmd "camera reset"
1274	PanCamera
1275	SendCmd "camera zoom $_view(zoom)"
1276
1277	foreach dataobj [get] {
1278	foreach comp [$dataobj components] {
1279	NameTransferFunc $dataobj $comp
1280	}
1281	}
1282
1283	# nothing to send -- activate the proper ivol
1284	set _first [lindex [get] 0]
1285	if {"" != $_first} {
1286	set axis [$_first hints updir]
1287	if {"" != $axis} {
1288	SendCmd "up $axis"
1289	}
1290	set location [$_first hints camera]
1291	if { $location != "" } {
1292	array set _view $location
1293	}
1294	set comp [lindex [$_first components] 0]
1295	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1296	}
1297
1298
1299	# sync the state of slicers
1300	set vols [CurrentVolumeIds -cutplanes]
1301	foreach axis {x y z} {
1302	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1303	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1304	SendCmd "cutplane position $pos $axis $vols"
1305	}
1306	SendCmd "volume data state $_settings($this-volume)"
1307	EventuallyResizeLegend
1308
1309	# Actually write the commands to the server socket. If it fails, we don't
1310	# care. We're finished here.
1311	blt::busy hold $itk_component(hull)
1312	StopBufferingCommands
1313	blt::busy release $itk_component(hull)
1314	set _reset 0
1315	}
1316
1317	# ----------------------------------------------------------------------
1318	# USAGE: CurrentVolumeIds ?-cutplanes?
1319	#
1320	# Returns a list of volume server IDs for the current volume being
1321	# displayed. This is normally a single ID, but it might be a list
1322	# of IDs if the current data object has multiple components.
1323	# ----------------------------------------------------------------------
1324	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1325	return ""
1326	if { $_first == "" } {
1327	return
1328	}
1329	foreach key [array names _serverObjs -] {
1330	if {[string match $_first-* $key]} {
1331	array set style {
1332	-cutplanes 1
1333	}
1334	foreach {dataobj comp} [split $key -] break
1335	array set style [lindex [$dataobj components -style $comp] 0]
1336	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1337	lappend rlist $_serverObjs($key)
1338	}
1339	}
1340	}
1341	return $rlist
1342	}
1343
1344	# ----------------------------------------------------------------------
1345	# USAGE: Zoom in
1346	# USAGE: Zoom out
1347	# USAGE: Zoom reset
1348	#
1349	# Called automatically when the user clicks on one of the zoom
1350	# controls for this widget. Changes the zoom for the current view.
1351	# ----------------------------------------------------------------------
1352	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1353	switch -- $option {
1354	"in" {
1355	set _view(zoom) [expr {$_view(zoom)*1.25}]
1356	set _settings($this-zoom) $_view(zoom)
1357	SendCmd "camera zoom $_view(zoom)"
1358	}
1359	"out" {
1360	set _view(zoom) [expr {$_view(zoom)*0.8}]
1361	set _settings($this-zoom) $_view(zoom)
1362	SendCmd "camera zoom $_view(zoom)"
1363	}
1364	"reset" {
1365	array set _view {
1366	qw 0.853553
1367	qx -0.353553
1368	qy 0.353553
1369	qz 0.146447
1370	zoom 1.0
1371	xpan 0
1372	ypan 0
1373	}
1374	if { $_first != "" } {
1375	set location [$_first hints camera]
1376	if { $location != "" } {
1377	array set _view $location
1378	}
1379	}
1380	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1381	$_arcball quaternion $q
1382	SendCmd "camera orient $q"
1383	SendCmd "camera reset"
1384	set _settings($this-qw) $_view(qw)
1385	set _settings($this-qx) $_view(qx)
1386	set _settings($this-qy) $_view(qy)
1387	set _settings($this-qz) $_view(qz)
1388	set _settings($this-xpan) $_view(xpan)
1389	set _settings($this-ypan) $_view(ypan)
1390	set _settings($this-zoom) $_view(zoom)
1391	}
1392	}
1393	}
1394
1395	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1396	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1397	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1398	set x $_view(xpan)
1399	set y $_view(ypan)
1400	SendCmd "camera pan $x $y"
1401	}
1402
1403	# ----------------------------------------------------------------------
1404	# USAGE: Rotate click <x> <y>
1405	# USAGE: Rotate drag <x> <y>
1406	# USAGE: Rotate release <x> <y>
1407	#
1408	# Called automatically when the user clicks/drags/releases in the
1409	# plot area. Moves the plot according to the user's actions.
1410	# ----------------------------------------------------------------------
1411	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1412	switch -- $option {
1413	click {
1414	$itk_component(3dview) configure -cursor fleur
1415	set _click(x) $x
1416	set _click(y) $y
1417	}
1418	drag {
1419	if {[array size _click] == 0} {
1420	Rotate click $x $y
1421	} else {
1422	set w [winfo width $itk_component(3dview)]
1423	set h [winfo height $itk_component(3dview)]
1424	if {$w <= 0 \|\| $h <= 0} {
1425	return
1426	}
1427
1428	if {[catch {
1429	# this fails sometimes for no apparent reason
1430	set dx [expr {double($x-$_click(x))/$w}]
1431	set dy [expr {double($y-$_click(y))/$h}]
1432	}]} {
1433	return
1434	}
1435
1436	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1437	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1438	set _settings($this-qw) $_view(qw)
1439	set _settings($this-qx) $_view(qx)
1440	set _settings($this-qy) $_view(qy)
1441	set _settings($this-qz) $_view(qz)
1442	SendCmd "camera orient $q"
1443
1444	set _click(x) $x
1445	set _click(y) $y
1446	}
1447	}
1448	release {
1449	Rotate drag $x $y
1450	$itk_component(3dview) configure -cursor ""
1451	catch {unset _click}
1452	}
1453	default {
1454	error "bad option \"$option\": should be click, drag, release"
1455	}
1456	}
1457	}
1458
1459	# ----------------------------------------------------------------------
1460	# USAGE: $this Pan click x y
1461	# $this Pan drag x y
1462	# $this Pan release x y
1463	#
1464	# Called automatically when the user clicks on one of the zoom
1465	# controls for this widget. Changes the zoom for the current view.
1466	# ----------------------------------------------------------------------
1467	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1468	# Experimental stuff
1469	set w [winfo width $itk_component(3dview)]
1470	set h [winfo height $itk_component(3dview)]
1471	if { $option == "set" } {
1472	set x [expr $x / double($w)]
1473	set y [expr $y / double($h)]
1474	set _view(xpan) [expr $_view(xpan) + $x]
1475	set _view(ypan) [expr $_view(ypan) + $y]
1476	PanCamera
1477	set _settings($this-xpan) $_view(xpan)
1478	set _settings($this-ypan) $_view(ypan)
1479	return
1480	}
1481	if { $option == "click" } {
1482	set _click(x) $x
1483	set _click(y) $y
1484	$itk_component(3dview) configure -cursor hand1
1485	}
1486	if { $option == "drag" \|\| $option == "release" } {
1487	set dx [expr ($_click(x) - $x)/double($w)]
1488	set dy [expr ($_click(y) - $y)/double($h)]
1489	set _click(x) $x
1490	set _click(y) $y
1491	set _view(xpan) [expr $_view(xpan) - $dx]
1492	set _view(ypan) [expr $_view(ypan) - $dy]
1493	PanCamera
1494	set _settings($this-xpan) $_view(xpan)
1495	set _settings($this-ypan) $_view(ypan)
1496	}
1497	if { $option == "release" } {
1498	$itk_component(3dview) configure -cursor ""
1499	}
1500	}
1501
1502
1503	# ----------------------------------------------------------------------
1504	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1505	#
1506	# Called when the user clicks on the record, stop or play buttons
1507	# for flow visualization.
1508	# ----------------------------------------------------------------------
1509	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1510	switch -- $option {
1511	movie {
1512	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1513	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1514	}
1515	set action [lindex $args 0]
1516	set op [lindex $args 1]
1517	if {$op == ""} { set op "on" }
1518
1519	set current [State $action]
1520	if {$op == "toggle"} {
1521	if {$current == "on"} {
1522	set op "off"
1523	} else {
1524	set op "on"
1525	}
1526	}
1527	set cmds ""
1528	switch -- $action {
1529	record {
1530	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1531	$itk_component(rewind) configure -relief sunken
1532	$itk_component(stop) configure -relief raised
1533	$itk_component(play) configure -relief raised
1534	set inner $itk_component(settingsFrame)
1535	set frames [$inner.framecnt value]
1536	set _settings(nsteps) $frames
1537	set cmds "flow capture $frames"
1538	SendCmd $cmds
1539	}
1540	}
1541	stop {
1542	if { [$itk_component(stop) cget -relief] != "sunken" } {
1543	$itk_component(rewind) configure -relief raised
1544	$itk_component(stop) configure -relief sunken
1545	$itk_component(play) configure -relief raised
1546	_pause
1547	set cmds "flow reset"
1548	SendCmd $cmds
1549	}
1550	}
1551	play {
1552	if { [$itk_component(play) cget -relief] != "sunken" } {
1553	$itk_component(rewind) configure -relief raised
1554	$itk_component(stop) configure -relief raised
1555	$itk_component(play) configure \
1556	-image [Rappture::icon flow-pause] \
1557	-relief sunken
1558	bind $itk_component(play) <ButtonPress> \
1559	[itcl::code $this _pause]
1560	flow next
1561	}
1562	}
1563	default {
1564	error "bad option \"$option\": should be one of record\|stop\|play"
1565	}
1566
1567	}
1568	}
1569	default {
1570	error "bad option \"$option\": should be movie"
1571	}
1572	}
1573	}
1574
1575	# ----------------------------------------------------------------------
1576	# USAGE: Play
1577	#
1578	# ----------------------------------------------------------------------
1579	itcl::body Rappture::FlowvisViewer::Play {} {
1580	SendCmd "flow next"
1581	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1582	$_dispatcher event -after $delay !play
1583	}
1584
1585	# ----------------------------------------------------------------------
1586	# USAGE: Pause
1587	#
1588	# Invoked when the user hits the "pause" button to stop playing the
1589	# current sequence of frames as a movie.
1590	# ----------------------------------------------------------------------
1591	itcl::body Rappture::FlowvisViewer::Pause {} {
1592	$_dispatcher cancel !play
1593
1594	# Toggle the button to "play" mode
1595	$itk_component(play) configure \
1596	-image [Rappture::icon flow-start] \
1597	-relief raised
1598	bind $itk_component(play) <ButtonPress> \
1599	[itcl::code $this Flow movie play toggle]
1600	}
1601
1602	# ----------------------------------------------------------------------
1603	# USAGE: InitSettings <what> ?<value>?
1604	#
1605	# Used internally to update rendering settings whenever parameters
1606	# change in the popup settings panel. Sends the new settings off
1607	# to the back end.
1608	# ----------------------------------------------------------------------
1609	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1610	foreach arg $args {
1611	AdjustSetting $arg
1612	}
1613	}
1614
1615	# ----------------------------------------------------------------------
1616	# USAGE: AdjustSetting <what> ?<value>?
1617	#
1618	# Used internally to update rendering settings whenever parameters
1619	# change in the popup settings panel. Sends the new settings off
1620	# to the back end.
1621	# ----------------------------------------------------------------------
1622	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1623	switch -- $what {
1624	colormap {
1625	set color [$itk_component(colormap) value]
1626	set _settings(colormap) $color
1627	#ResetColormap $color
1628	}
1629	light {
1630	if { $_first != "" } {
1631	set comp [lindex [$_first components] 0]
1632	set tag $_first-$comp
1633	set diffuse [expr {0.01*$_settings($this-light)}]
1634	set ambient [expr {1.0 - $diffuse}]
1635	set specularLevel 0.3
1636	set specularExp 90.0
1637	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1638	}
1639	}
1640	light2side {
1641	if { $_first != "" } {
1642	set comp [lindex [$_first components] 0]
1643	set tag $_first-$comp
1644	set val $_settings($this-light2side)
1645	SendCmd "$tag configure -light2side $val"
1646	}
1647	}
1648	transp {
1649	if { $_first != "" } {
1650	set comp [lindex [$_first components] 0]
1651	set tag $_first-$comp
1652	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1653	SendCmd "$tag configure -opacity $opacity"
1654	}
1655	}
1656	opacity {
1657	if { $_first != "" && $_activeTf != "" } {
1658	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1659	set tf $_activeTf
1660	set _settings($this-$tf-opacity) $opacity
1661	updatetransferfuncs
1662	}
1663	}
1664
1665	thickness {
1666	if { $_first != "" && $_activeTf != "" } {
1667	set val $_settings($this-thickness)
1668	# Scale values between 0.00001 and 0.01000
1669	set sval [expr {0.0001*double($val)}]
1670	set tf $_activeTf
1671	set _settings($this-$tf-thickness) $sval
1672	updatetransferfuncs
1673	}
1674	}
1675	"outline" {
1676	if { $_first != "" } {
1677	set comp [lindex [$_first components] 0]
1678	set tag $_first-$comp
1679	SendCmd "$tag configure -outline $_settings($this-outline)"
1680	}
1681	}
1682	"isosurface" {
1683	if { [isconnected] } {
1684	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1685	}
1686	}
1687	"grid" {
1688	if { [isconnected] } {
1689	SendCmd "grid visible $_settings($this-grid)"
1690	}
1691	}
1692	"axes" {
1693	if { [isconnected] } {
1694	SendCmd "axis visible $_settings($this-axes)"
1695	}
1696	}
1697	"legend" {
1698	if { $_settings($this-legend) } {
1699	blt::table $itk_component(plotarea) \
1700	0,0 $itk_component(3dview) -fill both \
1701	1,0 $itk_component(legend) -fill x
1702	blt::table configure $itk_component(plotarea) r1 -resize none
1703	} else {
1704	blt::table forget $itk_component(legend)
1705	}
1706	}
1707	"volume" {
1708	if { $_first != "" } {
1709	set comp [lindex [$_first components] 0]
1710	set tag $_first-$comp
1711	SendCmd "$tag configure -volume $_settings($this-volume)"
1712	}
1713	}
1714	"xcutplane" - "ycutplane" - "zcutplane" {
1715	set axis [string range $what 0 0]
1716	set bool $_settings($this-$what)
1717	if { [isconnected] } {
1718	set vols [CurrentVolumeIds -cutplanes]
1719	SendCmd "cutplane state $bool $axis $vols"
1720	}
1721	if { $bool } {
1722	$itk_component(${axis}CutScale) configure -state normal \
1723	-troughcolor white
1724	} else {
1725	$itk_component(${axis}CutScale) configure -state disabled \
1726	-troughcolor grey82
1727	}
1728	}
1729	default {
1730	error "don't know how to fix $what"
1731	}
1732	}
1733	}
1734
1735	# ----------------------------------------------------------------------
1736	# USAGE: ResizeLegend
1737	#
1738	# Used internally to update the legend area whenever it changes size
1739	# or when the field changes. Asks the server to send a new legend
1740	# for the current field.
1741	# ----------------------------------------------------------------------
1742	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1743	set _resizeLegendPending 0
1744	set lineht [font metrics $itk_option(-font) -linespace]
1745	set w [expr {$_width-20}]
1746	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1747
1748	if { $_first == "" } {
1749	return
1750	}
1751	set comp [lindex [$_first components] 0]
1752	set tag $_first-$comp
1753	#set _activeTf [lindex $_obj2style($tag) 0]
1754	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1755	#SendCmd "legend $_activeTf $w $h"
1756	SendCmd "$tag legend $w $h"
1757	} else {
1758	# Can't do this as this will remove the items associated with the
1759	# isomarkers.
1760
1761	#$itk_component(legend) delete all
1762	}
1763	}
1764
1765	#
1766	# NameTransferFunc --
1767	#
1768	# Creates a transfer function name based on the <style> settings in the
1769	# library run.xml file. This placeholder will be used later to create
1770	# and send the actual transfer function once the data info has been sent
1771	# to us by the render server. [We won't know the volume limits until the
1772	# server parses the 3D data and sends back the limits via ReceiveData.]
1773	#
1774	# FIXME: The current way we generate transfer-function names completely
1775	# ignores the -markers option. The problem is that we are forced
1776	# to compute the name from an increasing complex set of values:
1777	# color, levels, marker, opacity. I think we're stuck doing it
1778	# now.
1779	#
1780	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1781	array set style {
1782	-color BCGYR
1783	-levels 6
1784	-opacity 1.0
1785	-light 40
1786	-transp 50
1787	}
1788	array set style [lindex [$dataobj components -style $comp] 0]
1789	set _settings($this-light) $style(-light)
1790	set _settings($this-transp) $style(-transp)
1791	set _settings($this-opacity) [expr $style(-opacity) * 100]
1792	set tf "$style(-color):$style(-levels):$style(-opacity)"
1793	set _obj2style($dataobj-$comp) $tf
1794	lappend _style2objs($tf) $dataobj $comp
1795	return $tf
1796	}
1797
1798	#
1799	# ComputeTransferFunc --
1800	#
1801	# Computes and sends the transfer function to the render server. It's
1802	# assumed that the volume data limits are known and that the global
1803	# transfer-functions slider values have be setup. Both parts are
1804	# needed to compute the relative value (location) of the marker, and
1805	# the alpha map of the transfer function.
1806	#
1807	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1808	array set style {
1809	-color BCGYR
1810	-levels 6
1811	-opacity 1.0
1812	-light 40
1813	-transp 50
1814	}
1815	set dataobj ""; set comp ""
1816	foreach {dataobj comp} $_style2objs($tf) break
1817	if { $dataobj == "" } {
1818	return 0
1819	}
1820	array set style [lindex [$dataobj components -style $comp] 0]
1821
1822
1823	# We have to parse the style attributes for a volume using this
1824	# transfer-function once. This sets up the initial isomarkers for the
1825	# transfer function. The user may add/delete markers, so we have to
1826	# maintain a list of markers for each transfer-function. We use the one
1827	# of the volumes (the first in the list) using the transfer-function as a
1828	# reference.
1829	#
1830	# FIXME: The current way we generate transfer-function names completely
1831	# ignores the -markers option. The problem is that we are forced
1832	# to compute the name from an increasing complex set of values:
1833	# color, levels, marker, opacity. I think the cow's out of the
1834	# barn on this one.
1835
1836	if { ![info exists _isomarkers($tf)] } {
1837	# Have to defer creation of isomarkers until we have data limits
1838	if { [info exists style(-markers)] &&
1839	[llength $style(-markers)] > 0 } {
1840	ParseMarkersOption $tf $style(-markers)
1841	} else {
1842	ParseLevelsOption $tf $style(-levels)
1843	}
1844	}
1845	if { [info exists style(-nonuniformcolors)] } {
1846	foreach { value color } $style(-nonuniformcolors) {
1847	append cmap "$value [Color2RGB $color] "
1848	}
1849	} else {
1850	set cmap [ColorsToColormap $style(-color)]
1851	}
1852	set tag $this-$tf
1853	if { ![info exists _settings($tag-opacity)] } {
1854	set _settings($tag-opacity) $style(-opacity)
1855	}
1856	set max 1.0 ;#$_settings($tag-opacity)
1857
1858	set isovalues {}
1859	foreach m $_isomarkers($tf) {
1860	lappend isovalues [$m relval]
1861	}
1862	# Sort the isovalues
1863	set isovalues [lsort -real $isovalues]
1864
1865	if { ![info exists _settings($tag-thickness)]} {
1866	set _settings($tag-thickness) 0.005
1867	}
1868	set delta $_settings($tag-thickness)
1869
1870	set first [lindex $isovalues 0]
1871	set last [lindex $isovalues end]
1872	set wmap ""
1873	if { $first == "" \|\| $first != 0.0 } {
1874	lappend wmap 0.0 0.0
1875	}
1876	foreach x $isovalues {
1877	set x1 [expr {$x-$delta-0.00001}]
1878	set x2 [expr {$x-$delta}]
1879	set x3 [expr {$x+$delta}]
1880	set x4 [expr {$x+$delta+0.00001}]
1881	if { $x1 < 0.0 } {
1882	set x1 0.0
1883	} elseif { $x1 > 1.0 } {
1884	set x1 1.0
1885	}
1886	if { $x2 < 0.0 } {
1887	set x2 0.0
1888	} elseif { $x2 > 1.0 } {
1889	set x2 1.0
1890	}
1891	if { $x3 < 0.0 } {
1892	set x3 0.0
1893	} elseif { $x3 > 1.0 } {
1894	set x3 1.0
1895	}
1896	if { $x4 < 0.0 } {
1897	set x4 0.0
1898	} elseif { $x4 > 1.0 } {
1899	set x4 1.0
1900	}
1901	# add spikes in the middle
1902	lappend wmap $x1 0.0
1903	lappend wmap $x2 $max
1904	lappend wmap $x3 $max
1905	lappend wmap $x4 0.0
1906	}
1907	if { $last == "" \|\| $last != 1.0 } {
1908	lappend wmap 1.0 0.0
1909	}
1910	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1911	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1912	}
1913
1914	# ----------------------------------------------------------------------
1915	# CONFIGURATION OPTION: -plotbackground
1916	# ----------------------------------------------------------------------
1917	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1918	if { [isconnected] } {
1919	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1920	#fix this!
1921	#SendCmd "color background $r $g $b"
1922	}
1923	}
1924
1925	# ----------------------------------------------------------------------
1926	# CONFIGURATION OPTION: -plotforeground
1927	# ----------------------------------------------------------------------
1928	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1929	if { [isconnected] } {
1930	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1931	#fix this!
1932	#SendCmd "color background $r $g $b"
1933	}
1934	}
1935
1936	# ----------------------------------------------------------------------
1937	# CONFIGURATION OPTION: -plotoutline
1938	# ----------------------------------------------------------------------
1939	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1940	# Must check if we are connected because this routine is called from the
1941	# class body when the -plotoutline itk_option is defined. At that point
1942	# the FlowvisViewer class constructor hasn't been called, so we can't
1943	# start sending commands to visualization server.
1944	if { [isconnected] } {
1945	if {"" == $itk_option(-plotoutline)} {
1946	SendCmd "volume outline state off"
1947	} else {
1948	SendCmd "volume outline state on"
1949	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1950	}
1951	}
1952	}
1953
1954	#
1955	# The -levels option takes a single value that represents the number
1956	# of evenly distributed markers based on the current data range. Each
1957	# marker is a relative value from 0.0 to 1.0.
1958	#
1959	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1960	set c $itk_component(legend)
1961	regsub -all "," $levels " " levels
1962	if {[string is int $levels]} {
1963	for {set i 1} { $i <= $levels } {incr i} {
1964	set x [expr {double($i)/($levels+1)}]
1965	set m [Rappture::IsoMarker \#auto $c $this $tf]
1966	$m relval $x
1967	lappend _isomarkers($tf) $m
1968	}
1969	} else {
1970	foreach x $levels {
1971	set m [Rappture::IsoMarker \#auto $c $this $tf]
1972	$m relval $x
1973	lappend _isomarkers($tf) $m
1974	}
1975	}
1976	}
1977
1978	#
1979	# The -markers option takes a list of zero or more values (the values
1980	# may be separated either by spaces or commas) that have the following
1981	# format:
1982	#
1983	# N% Percent of current total data range. Converted to
1984	# to a relative value between 0.0 and 1.0.
1985	# N Absolute value of marker. If the marker is outside of
1986	# the current range, it will be displayed on the outer
1987	# edge of the legends, but it range it represents will
1988	# not be seen.
1989	#
1990	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1991	set c $itk_component(legend)
1992	regsub -all "," $markers " " markers
1993	foreach marker $markers {
1994	set n [scan $marker "%g%s" value suffix]
1995	if { $n == 2 && $suffix == "%" } {
1996	# ${n}% : Set relative value.
1997	set value [expr {$value * 0.01}]
1998	set m [Rappture::IsoMarker \#auto $c $this $tf]
1999	$m relval $value
2000	lappend _isomarkers($tf) $m
2001	} else {
2002	# ${n} : Set absolute value.
2003	set m [Rappture::IsoMarker \#auto $c $this $tf]
2004	$m absval $value
2005	lappend _isomarkers($tf) $m
2006	}
2007	}
2008	}
2009
2010	# ----------------------------------------------------------------------
2011	# USAGE: UndateTransferFuncs
2012	# ----------------------------------------------------------------------
2013	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
2014	$_dispatcher event -after 100 !send_transfunc
2015	}
2016
2017	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2018	if { $_activeTf == "" } {
2019	error "active transfer function isn't set"
2020	}
2021	set tf $_activeTf
2022	set c $itk_component(legend)
2023	set m [Rappture::IsoMarker \#auto $c $this $tf]
2024	set w [winfo width $c]
2025	$m relval [expr {double($x-10)/($w-20)}]
2026	lappend _isomarkers($tf) $m
2027	updatetransferfuncs
2028	return 1
2029	}
2030
2031	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2032	set tf [$marker transferfunc]
2033	set bool 0
2034	if { [info exists _isomarkers($tf)] } {
2035	set list {}
2036	set marker [namespace tail $marker]
2037	foreach m $_isomarkers($tf) {
2038	set sx [$m screenpos]
2039	if { $m != $marker } {
2040	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2041	$marker relval [$m relval]
2042	itcl::delete object $m
2043	bell
2044	set bool 1
2045	continue
2046	}
2047	}
2048	lappend list $m
2049	}
2050	set _isomarkers($tf) $list
2051	updatetransferfuncs
2052	}
2053	return $bool
2054	}
2055
2056	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2057	set tf [$marker transferfunc]
2058	if { [info exists _isomarkers($tf)] } {
2059	set marker [namespace tail $marker]
2060	foreach m $_isomarkers($tf) {
2061	set sx [$m screenpos]
2062	if { $m != $marker } {
2063	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2064	$m activate $bool
2065	}
2066	}
2067	}
2068	return ""
2069	}
2070
2071	itcl::body Rappture::FlowvisViewer::limits { tf } {
2072	set _limits(vmin) 0.0
2073	set _limits(vmax) 1.0
2074	if { ![info exists _style2objs($tf)] } {
2075	puts stderr "no style2objs for $tf tf=($tf)"
2076	return [array get _limits]
2077	}
2078	set min ""; set max ""
2079	foreach {dataobj comp} $_style2objs($tf) {
2080	set tag $dataobj-$comp
2081	if { ![info exists _serverObjs($tag)] } {
2082	puts stderr "$tag not in serverObjs?"
2083	continue
2084	}
2085	if { ![info exists _limits($tag-min)] } {
2086	puts stderr "$tag no min?"
2087	continue
2088	}
2089	if { $min == "" \|\| $min > $_limits($tag-min) } {
2090	set min $_limits($tag-min)
2091	}
2092	if { $max == "" \|\| $max < $_limits($tag-max) } {
2093	set max $_limits($tag-max)
2094	}
2095	}
2096	if { $min != "" } {
2097	set _limits(vmin) $min
2098	}
2099	if { $max != "" } {
2100	set _limits(vmax) $max
2101	}
2102	return [array get _limits]
2103	}
2104
2105	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2106	foreach { key value } {
2107	grid 0
2108	axes 0
2109	outline 1
2110	volume 1
2111	legend 1
2112	particles 1
2113	lic 1
2114	} {
2115	set _settings($this-$key) $value
2116	}
2117
2118	set fg [option get $itk_component(hull) font Font]
2119	#set bfg [option get $itk_component(hull) boldFont Font]
2120
2121	set inner [$itk_component(main) insert end \
2122	-title "View Settings" \
2123	-icon [Rappture::icon wrench]]
2124	$inner configure -borderwidth 4
2125
2126	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2127	checkbutton $inner.isosurface \
2128	-text "Isosurface shading" \
2129	-variable [itcl::scope _settings($this-isosurface)] \
2130	-command [itcl::code $this AdjustSetting isosurface] \
2131	-font "Arial 9"
2132
2133	checkbutton $inner.axes \
2134	-text "Axes" \
2135	-variable [itcl::scope _settings($this-axes)] \
2136	-command [itcl::code $this AdjustSetting axes] \
2137	-font "Arial 9"
2138
2139	checkbutton $inner.grid \
2140	-text "Grid" \
2141	-variable [itcl::scope _settings($this-grid)] \
2142	-command [itcl::code $this AdjustSetting grid] \
2143	-font "Arial 9"
2144
2145	checkbutton $inner.outline \
2146	-text "Outline" \
2147	-variable [itcl::scope _settings($this-outline)] \
2148	-command [itcl::code $this AdjustSetting outline] \
2149	-font "Arial 9"
2150
2151	checkbutton $inner.legend \
2152	-text "Legend" \
2153	-variable [itcl::scope _settings($this-legend)] \
2154	-command [itcl::code $this AdjustSetting legend] \
2155	-font "Arial 9"
2156
2157	checkbutton $inner.volume \
2158	-text "Volume" \
2159	-variable [itcl::scope _settings($this-volume)] \
2160	-command [itcl::code $this AdjustSetting volume] \
2161	-font "Arial 9"
2162
2163	checkbutton $inner.particles \
2164	-text "Particles" \
2165	-variable [itcl::scope _settings($this-particles)] \
2166	-command [itcl::code $this AdjustSetting particles] \
2167	-font "Arial 9"
2168
2169	checkbutton $inner.lic \
2170	-text "Lic" \
2171	-variable [itcl::scope _settings($this-lic)] \
2172	-command [itcl::code $this AdjustSetting lic] \
2173	-font "Arial 9"
2174
2175	frame $inner.frame
2176
2177	blt::table $inner \
2178	0,0 $inner.axes -cspan 2 -anchor w \
2179	1,0 $inner.grid -cspan 2 -anchor w \
2180	2,0 $inner.outline -cspan 2 -anchor w \
2181	3,0 $inner.volume -cspan 2 -anchor w \
2182	4,0 $inner.legend -cspan 2 -anchor w
2183
2184	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2185
2186	blt::table configure $inner r* -resize none
2187	blt::table configure $inner r5 -resize expand
2188	}
2189
2190	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2191	foreach { key value } {
2192	light2side 0
2193	light 40
2194	transp 50
2195	opacity 100
2196	thickness 350
2197	} {
2198	set _settings($this-$key) $value
2199	}
2200
2201	set inner [$itk_component(main) insert end \
2202	-title "Volume Settings" \
2203	-icon [Rappture::icon volume-on]]
2204	$inner configure -borderwidth 4
2205
2206	set fg [option get $itk_component(hull) font Font]
2207	#set bfg [option get $itk_component(hull) boldFont Font]
2208
2209	checkbutton $inner.vol -text "Show volume" -font $fg \
2210	-text "Volume" \
2211	-variable [itcl::scope _settings($this-volume)] \
2212	-command [itcl::code $this AdjustSetting volume] \
2213	-font "Arial 9"
2214
2215	label $inner.shading -text "Shading:" -font $fg
2216
2217	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2218	-variable [itcl::scope _settings($this-light2side)] \
2219	-command [itcl::code $this AdjustSetting light2side]
2220
2221	label $inner.dim -text "Glow" -font $fg
2222	::scale $inner.light -from 0 -to 100 -orient horizontal \
2223	-variable [itcl::scope _settings($this-light)] \
2224	-width 10 \
2225	-showvalue off -command [itcl::code $this AdjustSetting light]
2226	label $inner.bright -text "Surface" -font $fg
2227
2228	label $inner.fog -text "Clear" -font $fg
2229	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2230	-variable [itcl::scope _settings($this-transp)] \
2231	-width 10 \
2232	-showvalue off -command [itcl::code $this AdjustSetting transp]
2233	label $inner.plastic -text "Opaque" -font $fg
2234
2235	label $inner.clear -text "Clear" -font $fg
2236	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2237	-variable [itcl::scope _settings($this-opacity)] \
2238	-width 10 \
2239	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2240	label $inner.opaque -text "Opaque" -font $fg
2241
2242	label $inner.thin -text "Thin" -font $fg
2243	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2244	-variable [itcl::scope _settings($this-thickness)] \
2245	-width 10 \
2246	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2247	label $inner.thick -text "Thick" -font $fg
2248
2249	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2250	itk_component add colormap {
2251	Rappture::Combobox $inner.colormap -width 10 -editable no
2252	}
2253
2254	$inner.colormap choices insert end \
2255	"BCGYR" "BCGYR" \
2256	"BGYOR" "BGYOR" \
2257	"blue" "blue" \
2258	"blue-to-brown" "blue-to-brown" \
2259	"blue-to-orange" "blue-to-orange" \
2260	"blue-to-grey" "blue-to-grey" \
2261	"green-to-magenta" "green-to-magenta" \
2262	"greyscale" "greyscale" \
2263	"nanohub" "nanohub" \
2264	"rainbow" "rainbow" \
2265	"spectral" "spectral" \
2266	"ROYGB" "ROYGB" \
2267	"RYGCB" "RYGCB" \
2268	"brown-to-blue" "brown-to-blue" \
2269	"grey-to-blue" "grey-to-blue" \
2270	"orange-to-blue" "orange-to-blue" \
2271	"none" "none"
2272
2273	$itk_component(colormap) value "BCGYR"
2274	bind $inner.colormap <<Value>> \
2275	[itcl::code $this AdjustSetting colormap]
2276
2277	blt::table $inner \
2278	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2279	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2280	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2281	3,0 $inner.dim -anchor e -pady 2 \
2282	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2283	3,3 $inner.bright -anchor w -pady 2 \
2284	4,0 $inner.fog -anchor e -pady 2 \
2285	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2286	4,3 $inner.plastic -anchor w -pady 2 \
2287	5,0 $inner.thin -anchor e -pady 2 \
2288	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2289	5,3 $inner.thick -anchor w -pady 2
2290
2291	blt::table configure $inner c0 c1 c3 r* -resize none
2292	blt::table configure $inner r6 -resize expand
2293	}
2294
2295	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2296	set inner [$itk_component(main) insert end \
2297	-title "Cutplane Settings" \
2298	-icon [Rappture::icon cutbutton]]
2299	$inner configure -borderwidth 4
2300
2301	# X-value slicer...
2302	itk_component add xCutButton {
2303	Rappture::PushButton $inner.xbutton \
2304	-onimage [Rappture::icon x-cutplane] \
2305	-offimage [Rappture::icon x-cutplane] \
2306	-command [itcl::code $this AdjustSetting xcutplane] \
2307	-variable [itcl::scope _settings($this-xcutplane)]
2308	}
2309	Rappture::Tooltip::for $itk_component(xCutButton) \
2310	"Toggle the X cut plane on/off"
2311
2312	itk_component add xCutScale {
2313	::scale $inner.xval -from 100 -to 0 \
2314	-width 10 -orient vertical -showvalue off \
2315	-borderwidth 1 -highlightthickness 0 \
2316	-command [itcl::code $this Slice move x] \
2317	-variable [itcl::scope _settings($this-xcutposition)]
2318	} {
2319	usual
2320	ignore -borderwidth -highlightthickness
2321	}
2322	# Set the default cutplane value before disabling the scale.
2323	$itk_component(xCutScale) set 50
2324	$itk_component(xCutScale) configure -state disabled
2325	Rappture::Tooltip::for $itk_component(xCutScale) \
2326	"@[itcl::code $this SlicerTip x]"
2327
2328	# Y-value slicer...
2329	itk_component add yCutButton {
2330	Rappture::PushButton $inner.ybutton \
2331	-onimage [Rappture::icon y-cutplane] \
2332	-offimage [Rappture::icon y-cutplane] \
2333	-command [itcl::code $this AdjustSetting ycutplane] \
2334	-variable [itcl::scope _settings($this-ycutplane)]
2335	}
2336	Rappture::Tooltip::for $itk_component(yCutButton) \
2337	"Toggle the Y cut plane on/off"
2338
2339	itk_component add yCutScale {
2340	::scale $inner.yval -from 100 -to 0 \
2341	-width 10 -orient vertical -showvalue off \
2342	-borderwidth 1 -highlightthickness 0 \
2343	-command [itcl::code $this Slice move y] \
2344	-variable [itcl::scope _settings($this-ycutposition)]
2345	} {
2346	usual
2347	ignore -borderwidth -highlightthickness
2348	}
2349	Rappture::Tooltip::for $itk_component(yCutScale) \
2350	"@[itcl::code $this SlicerTip y]"
2351	# Set the default cutplane value before disabling the scale.
2352	$itk_component(yCutScale) set 50
2353	$itk_component(yCutScale) configure -state disabled
2354
2355	# Z-value slicer...
2356	itk_component add zCutButton {
2357	Rappture::PushButton $inner.zbutton \
2358	-onimage [Rappture::icon z-cutplane] \
2359	-offimage [Rappture::icon z-cutplane] \
2360	-command [itcl::code $this AdjustSetting zcutplane] \
2361	-variable [itcl::scope _settings($this-zcutplane)]
2362	}
2363	Rappture::Tooltip::for $itk_component(zCutButton) \
2364	"Toggle the Z cut plane on/off"
2365
2366	itk_component add zCutScale {
2367	::scale $inner.zval -from 100 -to 0 \
2368	-width 10 -orient vertical -showvalue off \
2369	-borderwidth 1 -highlightthickness 0 \
2370	-command [itcl::code $this Slice move z] \
2371	-variable [itcl::scope _settings($this-zcutposition)]
2372	} {
2373	usual
2374	ignore -borderwidth -highlightthickness
2375	}
2376	$itk_component(zCutScale) set 50
2377	$itk_component(zCutScale) configure -state disabled
2378	#$itk_component(zCutScale) configure -state disabled
2379	Rappture::Tooltip::for $itk_component(zCutScale) \
2380	"@[itcl::code $this SlicerTip z]"
2381
2382	blt::table $inner \
2383	1,1 $itk_component(xCutButton) \
2384	1,2 $itk_component(yCutButton) \
2385	1,3 $itk_component(zCutButton) \
2386	0,1 $itk_component(xCutScale) \
2387	0,2 $itk_component(yCutScale) \
2388	0,3 $itk_component(zCutScale) \
2389
2390	blt::table configure $inner r0 r1 c* -resize none
2391	blt::table configure $inner r2 c4 -resize expand
2392	blt::table configure $inner c0 -width 2
2393	blt::table configure $inner c1 c2 c3 -padx 2
2394	}
2395
2396	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2397	set inner [$itk_component(main) insert end \
2398	-title "Camera Settings" \
2399	-icon [Rappture::icon camera]]
2400	$inner configure -borderwidth 4
2401
2402	label $inner.view_l -text "view" -font "Arial 9"
2403	set f [frame $inner.view]
2404	foreach side { front back left right top bottom } {
2405	button $f.$side -image [Rappture::icon view$side] \
2406	-command [itcl::code $this SetOrientation $side]
2407	Rappture::Tooltip::for $f.$side "Change the view to $side"
2408	pack $f.$side -side left
2409	}
2410
2411	blt::table $inner \
2412	0,0 $inner.view_l -anchor e -pady 2 \
2413	0,1 $inner.view -anchor w -pady 2
2414
2415	set row 1
2416	set labels { qw qx qy qz xpan ypan zoom }
2417	foreach tag $labels {
2418	label $inner.${tag}label -text $tag -font "Arial 9"
2419	entry $inner.${tag} -font "Arial 9" -bg white \
2420	-textvariable [itcl::scope _settings($this-$tag)]
2421	bind $inner.${tag} <KeyPress-Return> \
2422	[itcl::code $this camera set ${tag}]
2423	blt::table $inner \
2424	$row,0 $inner.${tag}label -anchor e -pady 2 \
2425	$row,1 $inner.${tag} -anchor w -pady 2
2426	blt::table configure $inner r$row -resize none
2427	incr row
2428	}
2429
2430	blt::table configure $inner c* r* -resize none
2431	blt::table configure $inner c2 -resize expand
2432	blt::table configure $inner r$row -resize expand
2433	}
2434
2435	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2436	set flowobj ""
2437	foreach key [array names _obj2flow] {
2438	set flowobj $_obj2flow($key)
2439	break
2440	}
2441	if { $flowobj == "" } {
2442	return
2443	}
2444	if { [winfo exists $w.frame] } {
2445	destroy $w.frame
2446	}
2447	set inner [frame $w.frame]
2448	blt::table $w \
2449	5,0 $inner -fill both -cspan 2 -anchor nw
2450	array set hints [$flowobj hints]
2451	checkbutton $inner.showstreams -text "Streams Plane" \
2452	-variable [itcl::scope _settings($this-streams)] \
2453	-command [itcl::code $this streams $key $hints(name)] \
2454	-font "Arial 9"
2455	Rappture::Tooltip::for $inner.showstreams $hints(description)
2456
2457	checkbutton $inner.showarrows -text "Arrows" \
2458	-variable [itcl::scope _settings($this-arrows)] \
2459	-command [itcl::code $this arrows $key $hints(name)] \
2460	-font "Arial 9"
2461
2462	label $inner.particles -text "Particles" -font "Arial 9 bold"
2463	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2464
2465	blt::table $inner \
2466	1,0 $inner.showstreams -anchor w \
2467	2,0 $inner.showarrows -anchor w
2468	blt::table configure $inner c0 c1 -resize none
2469	blt::table configure $inner c2 -resize expand
2470
2471	set row 3
2472	set particles [$flowobj particles]
2473	if { [llength $particles] > 0 } {
2474	blt::table $inner $row,0 $inner.particles -anchor w
2475	incr row
2476	}
2477	foreach part $particles {
2478	array unset info
2479	array set info $part
2480	set name $info(name)
2481	if { ![info exists _settings($this-particles-$name)] } {
2482	set _settings($this-particles-$name) $info(hide)
2483	}
2484	checkbutton $inner.part$row -text $info(label) \
2485	-variable [itcl::scope _settings($this-particles-$name)] \
2486	-onvalue 0 -offvalue 1 \
2487	-command [itcl::code $this particles $key $name] \
2488	-font "Arial 9"
2489	Rappture::Tooltip::for $inner.part$row $info(description)
2490	blt::table $inner $row,0 $inner.part$row -anchor w
2491	if { !$_settings($this-particles-$name) } {
2492	$inner.part$row select
2493	}
2494	incr row
2495	}
2496	set boxes [$flowobj boxes]
2497	if { [llength $boxes] > 0 } {
2498	blt::table $inner $row,0 $inner.boxes -anchor w
2499	incr row
2500	}
2501	foreach box $boxes {
2502	array unset info
2503	array set info $box
2504	set name $info(name)
2505	if { ![info exists _settings($this-box-$name)] } {
2506	set _settings($this-box-$name) $info(hide)
2507	}
2508	checkbutton $inner.box$row -text $info(label) \
2509	-variable [itcl::scope _settings($this-box-$name)] \
2510	-onvalue 0 -offvalue 1 \
2511	-command [itcl::code $this box $key $name] \
2512	-font "Arial 9"
2513	Rappture::Tooltip::for $inner.box$row $info(description)
2514	blt::table $inner $row,0 $inner.box$row -anchor w
2515	if { !$_settings($this-box-$name) } {
2516	$inner.box$row select
2517	}
2518	incr row
2519	}
2520	blt::table configure $inner r* -resize none
2521	blt::table configure $inner r$row -resize expand
2522	blt::table configure $inner c3 -resize expand
2523	event generate [winfo parent [winfo parent $w]] <Configure>
2524	}
2525
2526	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2527	set bool $_settings($this-particles-$name)
2528	SendCmd "$tag particles configure {$name} -hide $bool"
2529	}
2530
2531	itcl::body Rappture::FlowvisViewer::box { tag name } {
2532	set bool $_settings($this-box-$name)
2533	SendCmd "$tag box configure {$name} -hide $bool"
2534	}
2535
2536	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2537	set bool $_settings($this-streams)
2538	SendCmd "$tag configure -slice $bool"
2539	}
2540
2541	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2542	set bool $_settings($this-arrows)
2543	SendCmd "$tag configure -arrows $bool"
2544	}
2545
2546	# ----------------------------------------------------------------------
2547	# USAGE: Slice move x\|y\|z <newval>
2548	#
2549	# Called automatically when the user drags the slider to move the
2550	# cut plane that slices 3D data. Gets the current value from the
2551	# slider and moves the cut plane to the appropriate point in the
2552	# data set.
2553	# ----------------------------------------------------------------------
2554	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2555	switch -- $option {
2556	move {
2557	if {[llength $args] != 2} {
2558	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2559	}
2560	set axis [lindex $args 0]
2561	set newval [lindex $args 1]
2562	set newpos [expr {0.01*$newval}]
2563
2564	# show the current value in the readout
2565
2566	set ids [CurrentVolumeIds -cutplanes]
2567	SendCmd "cutplane position $newpos $axis $ids"
2568	}
2569	default {
2570	error "bad option \"$option\": should be axis, move, or volume"
2571	}
2572	}
2573	}
2574
2575	# ----------------------------------------------------------------------
2576	# USAGE: SlicerTip <axis>
2577	#
2578	# Used internally to generate a tooltip for the x/y/z slicer controls.
2579	# Returns a message that includes the current slicer value.
2580	# ----------------------------------------------------------------------
2581	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2582	set val [$itk_component(${axis}CutScale) get]
2583	# set val [expr {0.01*($val-50)
2584	# *($_limits(${axis}max)-$_limits(${axis}min))
2585	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2586	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2587	}
2588
2589	itcl::body Rappture::FlowvisViewer::Resize {} {
2590	$_arcball resize $_width $_height
2591	SendCmd "screen size $_width $_height"
2592	set _resizePending 0
2593	}
2594
2595	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2596	set _width $w
2597	set _height $h
2598	$_arcball resize $w $h
2599	if { !$_resizePending } {
2600	$_dispatcher event -after 200 !resize
2601	set _resizePending 1
2602	}
2603	}
2604
2605	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2606	if { !$_resizeLegendPending } {
2607	$_dispatcher event -after 100 !legend
2608	set _resizeLegendPending 1
2609	}
2610	}
2611
2612	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2613	set _flow(goto) $nSteps
2614	if { !$_gotoPending } {
2615	$_dispatcher event -after 1000 !goto
2616	set _gotoPending 1
2617	}
2618	}
2619
2620	# camera --
2621	itcl::body Rappture::FlowvisViewer::camera {option args} {
2622	switch -- $option {
2623	"show" {
2624	puts [array get _view]
2625	}
2626	"set" {
2627	set who [lindex $args 0]
2628	set x $_settings($this-$who)
2629	set code [catch { string is double $x } result]
2630	if { $code != 0 \|\| !$result } {
2631	set _settings($this-$who) $_view($who)
2632	return
2633	}
2634	switch -- $who {
2635	"xpan" - "ypan" {
2636	set _view($who) $_settings($this-$who)
2637	PanCamera
2638	}
2639	"qx" - "qy" - "qz" - "qw" {
2640	set _view($who) $_settings($this-$who)
2641	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2642	$_arcball quaternion $q
2643	SendCmd "camera orient $q"
2644	}
2645	"zoom" {
2646	set _view($who) $_settings($this-$who)
2647	SendCmd "camera zoom $_view(zoom)"
2648	}
2649	}
2650	}
2651	}
2652	}
2653
2654	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2655	set tag "$dataobj-$comp"
2656	if { ![info exists _obj2flow($tag)] } {
2657	append cmd "flow add $tag\n"
2658	append cmd "$tag data follows $nbytes $extents\n"
2659	return $cmd
2660	}
2661	set flowobj $_obj2flow($tag)
2662	if { $flowobj == "" } {
2663	puts stderr "no flowobj"
2664	return ""
2665	}
2666	set cmd {}
2667	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2668	array set info [$flowobj hints]
2669	set _settings($this-volume) $info(volume)
2670	set _settings($this-outline) $info(outline)
2671	set _settings($this-arrows) $info(arrows)
2672	set _settings($this-duration) $info(duration)
2673	$itk_component(speed) value $info(speed)
2674	append cmd "flow add $tag"
2675	append cmd " -position $info(position)"
2676	append cmd " -axis $info(axis)"
2677	append cmd " -volume $info(volume)"
2678	append cmd " -outline $info(outline)"
2679	append cmd " -slice $info(streams)"
2680	append cmd " -arrows $info(arrows)\n"
2681	foreach part [$flowobj particles] {
2682	array unset info
2683	array set info $part
2684	set color [Color2RGB $info(color)]
2685	append cmd "$tag particles add $info(name)"
2686	append cmd " -position $info(position)"
2687	append cmd " -hide $info(hide)"
2688	append cmd " -axis $info(axis)"
2689	append cmd " -color {$color}"
2690	append cmd " -size $info(size)\n"
2691	}
2692	foreach box [$flowobj boxes] {
2693	array unset info
2694	set info(corner1) ""
2695	set info(corner2) ""
2696	array set info $box
2697	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2698	continue
2699	}
2700	set color [Color2RGB $info(color)]
2701	append cmd "$tag box add $info(name)"
2702	append cmd " -color {$color}"
2703	append cmd " -hide $info(hide)"
2704	append cmd " -linewidth $info(linewidth) "
2705	append cmd " -corner1 {$info(corner1)} "
2706	append cmd " -corner2 {$info(corner2)}\n"
2707	}
2708	append cmd "$tag data follows $nbytes $extents\n"
2709	return $cmd
2710	}
2711
2712
2713	#
2714	# flow --
2715	#
2716	# Called when the user clicks on the stop or play buttons
2717	# for flow visualization.
2718	#
2719	# $this flow play
2720	# $this flow stop
2721	# $this flow toggle
2722	# $this flow reset
2723	# $this flow pause
2724	# $this flow next
2725	#
2726	itcl::body Rappture::FlowvisViewer::flow { args } {
2727	set option [lindex $args 0]
2728	switch -- $option {
2729	"goto2" {
2730	puts stderr "actually sending \"flow goto $_flow(goto)\""
2731	SendCmd "flow goto $_flow(goto)"
2732	set _gotoPending 0
2733	}
2734	"goto" {
2735	puts stderr "flow goto to $_settings($this-currenttime)"
2736	# Figure out how many steps to the current time based upon
2737	# the speed and duration.
2738	set current $_settings($this-currenttime)
2739	set speed [$itk_component(speed) value]
2740	set time [str2millisecs $_settings($this-duration)]
2741	$itk_component(dial) configure -max $time
2742	set delay [expr int(round(500.0/$speed))]
2743	set timePerStep [expr {double($time) / $delay}]
2744	set nSteps [expr {int(ceil($current/$timePerStep))}]
2745	EventuallyGoto $nSteps
2746	}
2747	"speed" {
2748	set speed [$itk_component(speed) value]
2749	set _flow(delay) [expr int(round(500.0/$speed))]
2750	}
2751	"duration" {
2752	set max [str2millisecs $_settings($this-duration)]
2753	if { $max < 0 } {
2754	bell
2755	return
2756	}
2757	set _flow(duration) $max
2758	set _settings($this-duration) [millisecs2str $max]
2759	$itk_component(dial) configure -max $max
2760	}
2761	"off" {
2762	set _flow(state) 0
2763	$_dispatcher cancel !play
2764	$itk_component(play) deselect
2765	}
2766	"on" {
2767	flow speed
2768	flow duration
2769	set _flow(state) 1
2770	set _settings($this-currenttime) 0
2771	$itk_component(play) select
2772	}
2773	"stop" {
2774	if { $_flow(state) } {
2775	flow off
2776	flow reset
2777	}
2778	}
2779	"pause" {
2780	if { $_flow(state) } {
2781	flow off
2782	}
2783	}
2784	"play" {
2785	# If the flow is currently off, then restart it.
2786	if { !$_flow(state) } {
2787	flow on
2788	# If we're at the end of the flow, reset the flow.
2789	set _settings($this-currenttime) \
2790	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2791	if { $_settings($this-currenttime) >= $_flow(duration) } {
2792	set _settings($this-step) 1
2793	SendCmd "flow reset"
2794	}
2795	flow next
2796	}
2797	}
2798	"toggle" {
2799	if { $_settings($this-play) } {
2800	flow play
2801	} else {
2802	flow pause
2803	}
2804	}
2805	"reset" {
2806	set _settings($this-currenttime) 0
2807	SendCmd "flow reset"
2808	if { !$_flow(state) } {
2809	SendCmd "flow next"
2810	}
2811	}
2812	"next" {
2813	if { ![winfo viewable $itk_component(3dview)] } {
2814	flow stop
2815	return
2816	}
2817	set _settings($this-currenttime) \
2818	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2819	if { $_settings($this-currenttime) >= $_flow(duration) } {
2820	if { !$_settings($this-loop) } {
2821	flow off
2822	return
2823	}
2824	flow reset
2825	} else {
2826	SendCmd "flow next"
2827	}
2828	$_dispatcher event -after $_flow(delay) !play
2829	}
2830	default {
2831	error "bad option \"$option\": should be play, stop, toggle, or reset."
2832	}
2833	}
2834	}
2835
2836	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2837	switch -- $option {
2838	"start" {
2839	$_dispatcher dispatch $this !waiticon \
2840	"[itcl::code $this WaitIcon "next" $widget] ; list"
2841	set _icon 0
2842	$widget configure -image [Rappture::icon bigroller${_icon}]
2843	$_dispatcher event -after 100 !waiticon
2844	}
2845	"next" {
2846	incr _icon
2847	if { $_icon >= 8 } {
2848	set _icon 0
2849	}
2850	$widget configure -image [Rappture::icon bigroller${_icon}]
2851	$_dispatcher event -after 100 !waiticon
2852	}
2853	"stop" {
2854	$_dispatcher cancel !waiticon
2855	}
2856	}
2857	}
2858
2859	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2860	set token "print[incr _nextToken]"
2861	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2862	set $var ""
2863
2864	# Setup an automatic timeout procedure.
2865	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2866
2867	set popup .flowvisviewerprint
2868	if {![winfo exists $popup]} {
2869	Rappture::Balloon $popup -title "Generating file..."
2870	set inner [$popup component inner]
2871	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2872	label $inner.please -text "This may take a minute." -font "Arial 10"
2873	label $inner.icon -image [Rappture::icon bigroller0]
2874	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2875	-command [list set $var ""]
2876	blt::table $inner \
2877	0,0 $inner.title -cspan 2 \
2878	1,0 $inner.please -anchor w \
2879	1,1 $inner.icon -anchor e \
2880	2,0 $inner.cancel -cspan 2
2881	blt::table configure $inner r0 -pady 4
2882	blt::table configure $inner r2 -pady 4
2883	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2884	} else {
2885	set inner [$popup component inner]
2886	}
2887
2888	$_dispatcher event -after 60000 !pngtimeout
2889	WaitIcon start $inner.icon
2890	grab set $inner
2891	focus $inner.cancel
2892
2893	SendCmd "print $token $width $height"
2894
2895	$popup activate $widget below
2896	update idletasks
2897	update
2898	# We wait here for either
2899	# 1) the png to be delivered or
2900	# 2) timeout or
2901	# 3) user cancels the operation.
2902	tkwait variable $var
2903
2904	# Clean up.
2905	$_dispatcher cancel !pngtimeout
2906	WaitIcon stop $inner.icon
2907	grab release $inner
2908	$popup deactivate
2909	update
2910
2911	if { $_hardcopy($this-$token) != "" } {
2912	return [list .png $_hardcopy($this-$token)]
2913	}
2914	return ""
2915	}
2916
2917	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2918	set token "movie[incr _nextToken]"
2919	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2920	set $var ""
2921
2922	# Setup an automatic timeout procedure.
2923	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2924	set popup .flowvisviewermovie
2925	if {![winfo exists $popup]} {
2926	Rappture::Balloon $popup -title "Generating movie..."
2927	set inner [$popup component inner]
2928	label $inner.title -text "Generating movie for download" \
2929	-font "Arial 10 bold"
2930	label $inner.please -text "This may take a few minutes." \
2931	-font "Arial 10"
2932	label $inner.icon -image [Rappture::icon bigroller0]
2933	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2934	-command [list set $var ""]
2935	blt::table $inner \
2936	0,0 $inner.title -cspan 2 \
2937	1,0 $inner.please -anchor w \
2938	1,1 $inner.icon -anchor e \
2939	2,0 $inner.cancel -cspan 2
2940	blt::table configure $inner r0 -pady 4
2941	blt::table configure $inner r2 -pady 4
2942	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2943	} else {
2944	set inner [$popup component inner]
2945	}
2946	update
2947	# Timeout is set to 10 minutes.
2948	$_dispatcher event -after 600000 !movietimeout
2949	WaitIcon start $inner.icon
2950	grab set $inner
2951	focus $inner.cancel
2952
2953	flow duration
2954	flow speed
2955	set nframes [expr round($_flow(duration) / $_flow(delay))]
2956	set framerate [expr 1000.0 / $_flow(delay)]
2957
2958	# These are specific to MPEG1 video generation
2959	set framerate 25.0
2960	set bitrate 6.0e+6
2961
2962	set start [clock seconds]
2963	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2964
2965	$popup activate $widget below
2966	update idletasks
2967	update
2968	# We wait here until
2969	# 1. the movie is delivered or
2970	# 2. we've timed out or
2971	# 3. the user has canceled the operation.b
2972	tkwait variable $var
2973
2974	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2975
2976	# Clean up.
2977	$_dispatcher cancel !movietimeout
2978	WaitIcon stop $inner.icon
2979	grab release $inner
2980	$popup deactivate
2981	destroy $popup
2982	update
2983
2984	# This will both cancel the movie generation (if it hasn't already
2985	# completed) and reset the flow.
2986	SendCmd "flow reset"
2987	if { $_hardcopy($this-$token) != "" } {
2988	return [list .mpg $_hardcopy($this-$token)]
2989	}
2990	return ""
2991	}
2992
2993	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2994	set parts [split $value :]
2995	set secs 0
2996	set mins 0
2997	if { [llength $parts] == 1 } {
2998	scan [lindex $parts 0] "%d" secs
2999	} else {
3000	scan [lindex $parts 1] "%d" secs
3001	scan [lindex $parts 0] "%d" mins
3002	}
3003	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
3004	if { $ms > 600000.0 } {
3005	set ms 600000.0
3006	}
3007	if { $ms == 0.0 } {
3008	set ms 60000.0
3009	}
3010	return $ms
3011	}
3012
3013	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
3014	set min [expr floor($value / 60000.0)]
3015	set sec [expr ($value - ($min*60000.0)) / 1000.0]
3016	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
3017	}
3018
3019	itcl::body Rappture::FlowvisViewer::SetOrientation { side } {
3020	array set positions {
3021	front "1 0 0 0"
3022	back "0 0 1 0"
3023	left "0.707107 0 -0.707107 0"
3024	right "0.707107 0 0.707107 0"
3025	top "0.707107 -0.707107 0 0"
3026	bottom "0.707107 0.707107 0 0"
3027	}
3028	foreach name { qw qx qy qz } value $positions($side) {
3029	set _view($name) $value
3030	}
3031	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3032	$_arcball quaternion $q
3033	SendCmd "camera orient $q"
3034	SendCmd "camera reset"
3035	set _view(xpan) 0.0
3036	set _view(ypan) 0.0
3037	set _view(zoom) 1.0
3038	set _settings($this-xpan) $_view(xpan)
3039	set _settings($this-ypan) $_view(ypan)
3040	set _settings($this-zoom) $_view(zoom)
3041	}

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