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source: trunk/gui/scripts/flowvisviewer.tcl @ 3492

Last change on this file since 3492 was 3492, checked in by ldelgass, 11 years ago
Fix camera reset for nanovis. Includes refactoring of vector/matrix classes in nanovis to consolidate into vrmath library. Also add preliminary canonical view control to clients for testing.
File size: 104.5 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 {}
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	pan-x 0
228	pan-y 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-pan-x $_view(pan-x)
245	$this-pan-y $_view(pan-y)
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	return $popup
814	}
815	now {
816	if { [winfo exists $popup] } {
817	$popup deactivate
818	}
819	switch -- $_downloadPopup(format) {
820	draft {
821	# Get the image data (as base64) and decode it back to
822	# binary. This is better than writing to temporary
823	# files. When we switch to the BLT picture image it
824	# won't be necessary to decode the image data.
825	set bytes [$_image(plot) data -format "jpeg -quality 100"]
826	set bytes [Rappture::encoding::decode -as b64 $bytes]
827	return [list .jpg $bytes]
828	}
829	"640x480" {
830	return [$this GetMovie [lindex $args 0] 640 480]
831	}
832	"1024x768" {
833	return [$this GetMovie [lindex $args 0] 1024 768]
834	}
835	default {
836	error "bad download format $_downloadPopup(format)"
837	}
838	}
839	}
840	default {
841	error "bad option \"$option\": should be coming, controls, now"
842	}
843	}
844	}
845
846	# ----------------------------------------------------------------------
847	# USAGE: Connect ?<host:port>,<host:port>...?
848	#
849	# Clients use this method to establish a connection to a new
850	# server, or to reestablish a connection to the previous server.
851	# Any existing connection is automatically closed.
852	# ----------------------------------------------------------------------
853	itcl::body Rappture::FlowvisViewer::Connect {} {
854	set _hosts [GetServerList "nanovis"]
855	if { "" == $_hosts } {
856	return 0
857	}
858	set _reset 1
859	set result [VisViewer::Connect $_hosts]
860	if { $result } {
861	set w [winfo width $itk_component(3dview)]
862	set h [winfo height $itk_component(3dview)]
863	EventuallyResize $w $h
864	}
865	return $result
866	}
867
868	#
869	# isconnected --
870	#
871	# Indicates if we are currently connected to the visualization server.
872	#
873	itcl::body Rappture::FlowvisViewer::isconnected {} {
874	return [VisViewer::IsConnected]
875	}
876
877	#
878	# disconnect --
879	#
880	itcl::body Rappture::FlowvisViewer::disconnect {} {
881	Disconnect
882	}
883
884	#
885	# Disconnect --
886	#
887	# Clients use this method to disconnect from the current rendering
888	# server.
889	#
890	itcl::body Rappture::FlowvisViewer::Disconnect {} {
891	VisViewer::Disconnect
892
893	# disconnected -- no more data sitting on server
894	array unset _serverObjs
895	set _sendobjs ""
896	}
897
898	# ----------------------------------------------------------------------
899	# USAGE: SendDataObjs
900	#
901	# Used internally to send a series of volume objects off to the
902	# server. Sends each object, a little at a time, with updates in
903	# between so the interface doesn't lock up.
904	# ----------------------------------------------------------------------
905	itcl::body Rappture::FlowvisViewer::SendDataObjs {} {
906	blt::busy hold $itk_component(hull)
907	foreach dataobj $_sendobjs {
908	foreach comp [$dataobj components] {
909	# Send the data as one huge base64-encoded mess -- yuck!
910	set data [$dataobj blob $comp]
911	set nbytes [string length $data]
912	set extents [$dataobj extents $comp]
913
914	# I have a field. Is a vector field or a volume field?
915	if { $extents == 1 } {
916	set cmd "volume data follows $nbytes $dataobj-$comp\n"
917	} else {
918	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
919	if { $cmd == "" } {
920	puts stderr "no command"
921	continue
922	}
923	}
924	f { ![SendBytes $cmd] } {
925	puts stderr "can't send"
926	return
927	}
928	if { ![SendBytes $data] } {
929	puts stderr "can't send"
930	return
931	}
932	NameTransferFunc $dataobj $comp
933	set _recvObjs($dataobj-$comp) 1
934	}
935	}
936	set _sendobjs ""
937	blt::busy release $itk_component(hull)
938
939	# Turn on buffering of commands to the server. We don't want to
940	# be preempted by a server disconnect/reconnect (which automatically
941	# generates a new call to Rebuild).
942	StartBufferingCommands
943
944	# activate the proper volume
945	set _first [lindex [get] 0]
946	if { "" != $_first } {
947	set axis [$_first hints updir]
948	if {"" != $axis} {
949	SendCmd "up $axis"
950	}
951
952	if 0 {
953	set location [$_first hints camera]
954	if { $location != "" } {
955	array set _view $location
956	}
957	set _settings($this-qw) $_view(qw)
958	set _settings($this-qx) $_view(qx)
959	set _settings($this-qy) $_view(qy)
960	set _settings($this-qz) $_view(qz)
961	set _settings($this-pan-x) $_view(pan-x)
962	set _settings($this-pan-y) $_view(pan-y)
963	set _settings($this-zoom) $_view(zoom)
964	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
965	$_arcball quaternion $q
966	SendCmd "camera orient $q"
967	SendCmd "camera reset"
968	PanCamera
969	SendCmd "camera zoom $_view(zoom)"
970	}
971	# The active transfer function is by default the first component of
972	# the first data object. This assumes that the data is always
973	# successfully transferred.
974	set comp [lindex [$_first components] 0]
975	set _activeTf [lindex $_obj2style($_first-$comp) 0]
976	}
977
978	SendCmd "flow reset"
979	StopBufferingCommands
980	}
981
982	# ----------------------------------------------------------------------
983	# USAGE: SendTransferFuncs
984	# ----------------------------------------------------------------------
985	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
986	if { $_activeTf == "" } {
987	puts stderr "no active tf"
988	return
989	}
990	set tf $_activeTf
991	if { $_first == "" } {
992	puts stderr "no first"
993	return
994	}
995
996	# Ensure that the global opacity and thickness settings (in the slider
997	# settings widgets) are used for the active transfer-function. Update the
998	# values in the _settings varible.
999	set value $_settings($this-opacity)
1000	set opacity [expr { double($value) * 0.01 }]
1001	set _settings($this-$tf-opacity) $opacity
1002	set value $_settings($this-thickness)
1003	# Scale values between 0.00001 and 0.01000
1004	set thickness [expr {double($value) * 0.0001}]
1005	set _settings($this-$tf-thickness) $thickness
1006
1007	foreach key [array names _obj2style $_first-*] {
1008	if { [info exists _obj2style($key)] } {
1009	foreach tf $_obj2style($key) {
1010	ComputeTransferFunc $tf
1011	}
1012	}
1013	}
1014	EventuallyResizeLegend
1015	}
1016
1017	# ----------------------------------------------------------------------
1018	# USAGE: ReceiveImage -bytes $size -type $type -token $token
1019	#
1020	# Invoked automatically whenever the "image" command comes in from
1021	# the rendering server. Indicates that binary image data with the
1022	# specified <size> will follow.
1023	# ----------------------------------------------------------------------
1024	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
1025	array set info {
1026	-token "???"
1027	-bytes 0
1028	-type image
1029	}
1030	array set info $args
1031	set bytes [ReceiveBytes $info(-bytes)]
1032	ReceiveEcho <<line "<read $info(-bytes) bytes"
1033	switch -- $info(-type) {
1034	"image" {
1035	$_image(plot) configure -data $bytes
1036	#puts stderr "image received [image width $_image(plot)] by [image height $_image(plot)]"
1037	}
1038	"print" {
1039	set tag $this-$info(-token)
1040	set _hardcopy($tag) $bytes
1041	}
1042	"movie" {
1043	set tag $this-$info(-token)
1044	set _hardcopy($tag) $bytes
1045	}
1046	default {
1047	puts stderr "unknown download type $info(-type)"
1048	}
1049	}
1050	}
1051
1052	#
1053	# ReceiveLegend --
1054	#
1055	# The procedure is the response from the render server to each "legend"
1056	# command. The server sends back a "legend" command invoked our
1057	# the slave interpreter. The purpose is to collect data of the image
1058	# representing the legend in the canvas. In addition, the isomarkers
1059	# of the active transfer function are displayed.
1060	#
1061	# I don't know is this is the right place to display the isomarkers.
1062	# I don't know all the different paths used to draw the plot. There's
1063	# "Rebuild", "add", etc.
1064	#
1065	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tag vmin vmax size } {
1066	if { ![isconnected] } {
1067	return
1068	}
1069	#puts stderr "receive legend $tag $vmin $vmax $size"
1070	set bytes [ReceiveBytes $size]
1071	$_image(legend) configure -data $bytes
1072	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1073
1074	set c $itk_component(legend)
1075	set w [winfo width $c]
1076	set h [winfo height $c]
1077	set lx 10
1078	# FIXME: I don't know what I have to do this for the 2D flow
1079	# example. Otherwise the canvas background is white.
1080	# I'll get to this when we add background changes into
1081	# nanvis.
1082	$c configure -background black
1083	set ly [expr {$h - 1}]
1084	if {"" == [$c find withtag transfunc]} {
1085	$c create image 10 10 -anchor nw \
1086	-image $_image(legend) -tags transfunc
1087	$c create text $lx $ly -anchor sw \
1088	-fill $itk_option(-plotforeground) -tags "limits vmin"
1089	$c create text [expr {$w-$lx}] $ly -anchor se \
1090	-fill $itk_option(-plotforeground) -tags "limits vmax"
1091	$c lower transfunc
1092	$c bind transfunc <ButtonRelease-1> \
1093	[itcl::code $this AddIsoMarker %x %y]
1094	}
1095	# Display the markers used by the active transfer function.
1096	set tf $_obj2style($tag)
1097	array set limits [limits $tf]
1098	$c itemconfigure vmin -text [format %.2g $limits(vmin)]
1099	$c coords vmin $lx $ly
1100
1101	$c itemconfigure vmax -text [format %.2g $limits(vmax)]
1102	$c coords vmax [expr {$w-$lx}] $ly
1103
1104	if { [info exists _isomarkers($tf)] } {
1105	foreach m $_isomarkers($tf) {
1106	$m visible yes
1107	}
1108	}
1109	}
1110
1111	#
1112	# ReceiveData --
1113	#
1114	# The procedure is the response from the render server to each "data
1115	# follows" command. The server sends back a "data" command invoked our
1116	# the slave interpreter. The purpose is to collect the min/max of the
1117	# volume sent to the render server. Since the client (flowvisviewer)
1118	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1119	# tell us what the limits are. Once we've received the limits to all
1120	# the data we've sent (tracked by _recvObjs) we can then determine
1121	# what the transfer functions are for these # volumes.
1122	#
1123	# Note: There is a considerable tradeoff in having the server report
1124	# back what the data limits are. It means that much of the code
1125	# having to do with transfer-functions has to wait for the data
1126	# to come back, since the isomarkers are calculated based upon
1127	# the data limits. The client code is much messier because of
1128	# this. The alternative is to parse any of the 3D formats on the
1129	# client side.
1130	#
1131	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1132	if { ![isconnected] } {
1133	return
1134	}
1135	# Arguments from server are name value pairs. Stuff them in an array.
1136	array set values $args
1137	set tag $values(tag)
1138	set parts [split $tag -]
1139	set dataobj [lindex $parts 0]
1140	set _serverObjs($tag) 0
1141	set _limits($tag-min) $values(min); # Minimum value of the volume.
1142	set _limits($tag-max) $values(max); # Maximum value of the volume.
1143	unset _recvObjs($tag)
1144	if { [array size _recvObjs] == 0 } {
1145	updatetransferfuncs
1146	}
1147	}
1148
1149	#
1150	# Rebuild --
1151	#
1152	# Called automatically whenever something changes that affects the data
1153	# in the widget. Clears any existing data and rebuilds the widget to
1154	# display new data.
1155	#
1156	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1157
1158	# Hide all the isomarkers. Can't remove them. Have to remember the
1159	# settings since the user may have created/deleted/moved markers.
1160
1161	foreach tf [array names _isomarkers] {
1162	foreach m $_isomarkers($tf) {
1163	$m visible no
1164	}
1165	}
1166
1167	set _first ""
1168	# Turn on buffering of commands to the server. We don't want to
1169	# be preempted by a server disconnect/reconnect (which automatically
1170	# generates a new call to Rebuild).
1171	StartBufferingCommands
1172
1173	if { $_reset } {
1174	if { $_reportClientInfo } {
1175	# Tell the server the name of the tool, the version, and
1176	# dataset that we are rendering. Have to do it here because
1177	# we don't know what data objects are using the renderer until
1178	# be get here.
1179	global env
1180
1181	set info {}
1182	set user "???"
1183	if { [info exists env(USER)] } {
1184	set user $env(USER)
1185	}
1186	set session "???"
1187	if { [info exists env(SESSION)] } {
1188	set session $env(SESSION)
1189	}
1190	lappend info "hub" [exec hostname]
1191	lappend info "client" "flowvisviewer"
1192	lappend info "user" $user
1193	lappend info "session" $session
1194	SendCmd "clientinfo [list $info]"
1195	}
1196	set _width [winfo width $itk_component(3dview)]
1197	set _height [winfo height $itk_component(3dview)]
1198	Resize
1199	}
1200	foreach dataobj [get] {
1201	foreach comp [$dataobj components] {
1202	set tag $dataobj-$comp
1203	# Send the data as one huge base64-encoded mess -- yuck!
1204	set data [$dataobj blob $comp]
1205	set nbytes [string length $data]
1206	if { $_reportClientInfo } {
1207	set info {}
1208	lappend info "tool_id" [$dataobj hints toolId]
1209	lappend info "tool_name" [$dataobj hints toolName]
1210	lappend info "tool_version" [$dataobj hints toolRevision]
1211	lappend info "tool_title" [$dataobj hints toolTitle]
1212	lappend info "dataset_label" [$dataobj hints label]
1213	lappend info "dataset_size" $nbytes
1214	lappend info "dataset_tag" $tag
1215	SendCmd "clientinfo [list $info]"
1216	}
1217	set extents [$dataobj extents $comp]
1218	# I have a field. Is a vector field or a volume field?
1219	if { $extents == 1 } {
1220	set cmd "volume data follows $nbytes $tag\n"
1221	} else {
1222	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1223	if { $cmd == "" } {
1224	puts stderr "no command"
1225	continue
1226	}
1227	}
1228	append _outbuf $cmd
1229	append _outbuf $data
1230	NameTransferFunc $dataobj $comp
1231	set _recvObjs($tag) 1
1232	}
1233	}
1234
1235	set _first [lindex [get] 0]
1236
1237	# Reset the camera and other view parameters
1238	InitSettings isosurface grid axes volume outline light2side light transp
1239
1240	# nothing to send -- activate the proper volume
1241	if {"" != $_first} {
1242	AdjustSetting light
1243	AdjustSetting transp
1244	set axis [$_first hints updir]
1245	if {"" != $axis} {
1246	SendCmd "up $axis"
1247	}
1248	set location [$_first hints camera]
1249	if { $location != "" } {
1250	array set _view $location
1251	}
1252
1253	}
1254	set _settings($this-qw) $_view(qw)
1255	set _settings($this-qx) $_view(qx)
1256	set _settings($this-qy) $_view(qy)
1257	set _settings($this-qz) $_view(qz)
1258	set _settings($this-pan-x) $_view(pan-x)
1259	set _settings($this-pan-y) $_view(pan-y)
1260	set _settings($this-zoom) $_view(zoom)
1261
1262	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1263	$_arcball quaternion $q
1264	SendCmd "camera orient $q"
1265	SendCmd "camera reset"
1266	PanCamera
1267	SendCmd "camera zoom $_view(zoom)"
1268
1269	foreach dataobj [get] {
1270	foreach comp [$dataobj components] {
1271	NameTransferFunc $dataobj $comp
1272	}
1273	}
1274
1275	# nothing to send -- activate the proper ivol
1276	set _first [lindex [get] 0]
1277	if {"" != $_first} {
1278	set axis [$_first hints updir]
1279	if {"" != $axis} {
1280	SendCmd "up $axis"
1281	}
1282	set location [$_first hints camera]
1283	if { $location != "" } {
1284	array set _view $location
1285	}
1286	set comp [lindex [$_first components] 0]
1287	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1288	}
1289
1290
1291	# sync the state of slicers
1292	set vols [CurrentVolumeIds -cutplanes]
1293	foreach axis {x y z} {
1294	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1295	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1296	SendCmd "cutplane position $pos $axis $vols"
1297	}
1298	SendCmd "volume data state $_settings($this-volume)"
1299	EventuallyResizeLegend
1300
1301	# Actually write the commands to the server socket. If it fails, we don't
1302	# care. We're finished here.
1303	blt::busy hold $itk_component(hull)
1304	StopBufferingCommands
1305	blt::busy release $itk_component(hull)
1306	set _reset 0
1307	}
1308
1309	# ----------------------------------------------------------------------
1310	# USAGE: CurrentVolumeIds ?-cutplanes?
1311	#
1312	# Returns a list of volume server IDs for the current volume being
1313	# displayed. This is normally a single ID, but it might be a list
1314	# of IDs if the current data object has multiple components.
1315	# ----------------------------------------------------------------------
1316	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1317	return ""
1318	if { $_first == "" } {
1319	return
1320	}
1321	foreach key [array names _serverObjs -] {
1322	if {[string match $_first-* $key]} {
1323	array set style {
1324	-cutplanes 1
1325	}
1326	foreach {dataobj comp} [split $key -] break
1327	array set style [lindex [$dataobj components -style $comp] 0]
1328	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1329	lappend rlist $_serverObjs($key)
1330	}
1331	}
1332	}
1333	return $rlist
1334	}
1335
1336	# ----------------------------------------------------------------------
1337	# USAGE: Zoom in
1338	# USAGE: Zoom out
1339	# USAGE: Zoom reset
1340	#
1341	# Called automatically when the user clicks on one of the zoom
1342	# controls for this widget. Changes the zoom for the current view.
1343	# ----------------------------------------------------------------------
1344	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1345	switch -- $option {
1346	"in" {
1347	set _view(zoom) [expr {$_view(zoom)*1.25}]
1348	set _settings($this-zoom) $_view(zoom)
1349	SendCmd "camera zoom $_view(zoom)"
1350	}
1351	"out" {
1352	set _view(zoom) [expr {$_view(zoom)*0.8}]
1353	set _settings($this-zoom) $_view(zoom)
1354	SendCmd "camera zoom $_view(zoom)"
1355	}
1356	"reset" {
1357	array set _view {
1358	qw 0.853553
1359	qx -0.353553
1360	qy 0.353553
1361	qz 0.146447
1362	zoom 1.0
1363	pan-x 0
1364	pan-y 0
1365	}
1366	if { $_first != "" } {
1367	set location [$_first hints camera]
1368	if { $location != "" } {
1369	array set _view $location
1370	}
1371	}
1372	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1373	$_arcball quaternion $q
1374	SendCmd "camera orient $q"
1375	SendCmd "camera reset"
1376	set _settings($this-qw) $_view(qw)
1377	set _settings($this-qx) $_view(qx)
1378	set _settings($this-qy) $_view(qy)
1379	set _settings($this-qz) $_view(qz)
1380	set _settings($this-pan-x) $_view(pan-x)
1381	set _settings($this-pan-y) $_view(pan-y)
1382	set _settings($this-zoom) $_view(zoom)
1383	$itk_component(orientation) value "default"
1384	}
1385	}
1386	}
1387
1388	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1389	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1390	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1391	set x $_view(pan-x)
1392	set y $_view(pan-y)
1393	SendCmd "camera pan $x $y"
1394	}
1395
1396	# ----------------------------------------------------------------------
1397	# USAGE: Rotate click <x> <y>
1398	# USAGE: Rotate drag <x> <y>
1399	# USAGE: Rotate release <x> <y>
1400	#
1401	# Called automatically when the user clicks/drags/releases in the
1402	# plot area. Moves the plot according to the user's actions.
1403	# ----------------------------------------------------------------------
1404	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1405	switch -- $option {
1406	click {
1407	$itk_component(3dview) configure -cursor fleur
1408	set _click(x) $x
1409	set _click(y) $y
1410	}
1411	drag {
1412	if {[array size _click] == 0} {
1413	Rotate click $x $y
1414	} else {
1415	set w [winfo width $itk_component(3dview)]
1416	set h [winfo height $itk_component(3dview)]
1417	if {$w <= 0 \|\| $h <= 0} {
1418	return
1419	}
1420
1421	if {[catch {
1422	# this fails sometimes for no apparent reason
1423	set dx [expr {double($x-$_click(x))/$w}]
1424	set dy [expr {double($y-$_click(y))/$h}]
1425	}]} {
1426	return
1427	}
1428
1429	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1430	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1431	set _settings($this-qw) $_view(qw)
1432	set _settings($this-qx) $_view(qx)
1433	set _settings($this-qy) $_view(qy)
1434	set _settings($this-qz) $_view(qz)
1435	SendCmd "camera orient $q"
1436
1437	set _click(x) $x
1438	set _click(y) $y
1439	}
1440	}
1441	release {
1442	Rotate drag $x $y
1443	$itk_component(3dview) configure -cursor ""
1444	catch {unset _click}
1445	}
1446	default {
1447	error "bad option \"$option\": should be click, drag, release"
1448	}
1449	}
1450	}
1451
1452	# ----------------------------------------------------------------------
1453	# USAGE: $this Pan click x y
1454	# $this Pan drag x y
1455	# $this Pan release x y
1456	#
1457	# Called automatically when the user clicks on one of the zoom
1458	# controls for this widget. Changes the zoom for the current view.
1459	# ----------------------------------------------------------------------
1460	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1461	# Experimental stuff
1462	set w [winfo width $itk_component(3dview)]
1463	set h [winfo height $itk_component(3dview)]
1464	if { $option == "set" } {
1465	set x [expr $x / double($w)]
1466	set y [expr $y / double($h)]
1467	set _view(pan-x) [expr $_view(pan-x) + $x]
1468	set _view(pan-y) [expr $_view(pan-y) + $y]
1469	PanCamera
1470	set _settings($this-pan-x) $_view(pan-x)
1471	set _settings($this-pan-y) $_view(pan-y)
1472	return
1473	}
1474	if { $option == "click" } {
1475	set _click(x) $x
1476	set _click(y) $y
1477	$itk_component(3dview) configure -cursor hand1
1478	}
1479	if { $option == "drag" \|\| $option == "release" } {
1480	set dx [expr ($_click(x) - $x)/double($w)]
1481	set dy [expr ($_click(y) - $y)/double($h)]
1482	set _click(x) $x
1483	set _click(y) $y
1484	set _view(pan-x) [expr $_view(pan-x) - $dx]
1485	set _view(pan-y) [expr $_view(pan-y) - $dy]
1486	PanCamera
1487	set _settings($this-pan-x) $_view(pan-x)
1488	set _settings($this-pan-y) $_view(pan-y)
1489	}
1490	if { $option == "release" } {
1491	$itk_component(3dview) configure -cursor ""
1492	}
1493	}
1494
1495
1496	# ----------------------------------------------------------------------
1497	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1498	#
1499	# Called when the user clicks on the record, stop or play buttons
1500	# for flow visualization.
1501	# ----------------------------------------------------------------------
1502	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1503	switch -- $option {
1504	movie {
1505	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1506	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1507	}
1508	set action [lindex $args 0]
1509	set op [lindex $args 1]
1510	if {$op == ""} { set op "on" }
1511
1512	set current [State $action]
1513	if {$op == "toggle"} {
1514	if {$current == "on"} {
1515	set op "off"
1516	} else {
1517	set op "on"
1518	}
1519	}
1520	set cmds ""
1521	switch -- $action {
1522	record {
1523	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1524	$itk_component(rewind) configure -relief sunken
1525	$itk_component(stop) configure -relief raised
1526	$itk_component(play) configure -relief raised
1527	set inner $itk_component(settingsFrame)
1528	set frames [$inner.framecnt value]
1529	set _settings(nsteps) $frames
1530	set cmds "flow capture $frames"
1531	SendCmd $cmds
1532	}
1533	}
1534	stop {
1535	if { [$itk_component(stop) cget -relief] != "sunken" } {
1536	$itk_component(rewind) configure -relief raised
1537	$itk_component(stop) configure -relief sunken
1538	$itk_component(play) configure -relief raised
1539	_pause
1540	set cmds "flow reset"
1541	SendCmd $cmds
1542	}
1543	}
1544	play {
1545	if { [$itk_component(play) cget -relief] != "sunken" } {
1546	$itk_component(rewind) configure -relief raised
1547	$itk_component(stop) configure -relief raised
1548	$itk_component(play) configure \
1549	-image [Rappture::icon flow-pause] \
1550	-relief sunken
1551	bind $itk_component(play) <ButtonPress> \
1552	[itcl::code $this _pause]
1553	flow next
1554	}
1555	}
1556	default {
1557	error "bad option \"$option\": should be one of record\|stop\|play"
1558	}
1559
1560	}
1561	}
1562	default {
1563	error "bad option \"$option\": should be movie"
1564	}
1565	}
1566	}
1567
1568	# ----------------------------------------------------------------------
1569	# USAGE: Play
1570	#
1571	# ----------------------------------------------------------------------
1572	itcl::body Rappture::FlowvisViewer::Play {} {
1573	SendCmd "flow next"
1574	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1575	$_dispatcher event -after $delay !play
1576	}
1577
1578	# ----------------------------------------------------------------------
1579	# USAGE: Pause
1580	#
1581	# Invoked when the user hits the "pause" button to stop playing the
1582	# current sequence of frames as a movie.
1583	# ----------------------------------------------------------------------
1584	itcl::body Rappture::FlowvisViewer::Pause {} {
1585	$_dispatcher cancel !play
1586
1587	# Toggle the button to "play" mode
1588	$itk_component(play) configure \
1589	-image [Rappture::icon flow-start] \
1590	-relief raised
1591	bind $itk_component(play) <ButtonPress> \
1592	[itcl::code $this Flow movie play toggle]
1593	}
1594
1595	# ----------------------------------------------------------------------
1596	# USAGE: InitSettings <what> ?<value>?
1597	#
1598	# Used internally to update rendering settings whenever parameters
1599	# change in the popup settings panel. Sends the new settings off
1600	# to the back end.
1601	# ----------------------------------------------------------------------
1602	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1603	foreach arg $args {
1604	AdjustSetting $arg
1605	}
1606	}
1607
1608	# ----------------------------------------------------------------------
1609	# USAGE: AdjustSetting <what> ?<value>?
1610	#
1611	# Used internally to update rendering settings whenever parameters
1612	# change in the popup settings panel. Sends the new settings off
1613	# to the back end.
1614	# ----------------------------------------------------------------------
1615	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1616	switch -- $what {
1617	colormap {
1618	set color [$itk_component(colormap) value]
1619	set _settings(colormap) $color
1620	#ResetColormap $color
1621	}
1622	light {
1623	if { $_first != "" } {
1624	set comp [lindex [$_first components] 0]
1625	set tag $_first-$comp
1626	set diffuse [expr {0.01*$_settings($this-light)}]
1627	set ambient [expr {1.0 - $diffuse}]
1628	set specularLevel 0.3
1629	set specularExp 90.0
1630	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1631	}
1632	}
1633	light2side {
1634	if { $_first != "" } {
1635	set comp [lindex [$_first components] 0]
1636	set tag $_first-$comp
1637	set val $_settings($this-light2side)
1638	SendCmd "$tag configure -light2side $val"
1639	}
1640	}
1641	transp {
1642	if { $_first != "" } {
1643	set comp [lindex [$_first components] 0]
1644	set tag $_first-$comp
1645	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1646	SendCmd "$tag configure -opacity $opacity"
1647	}
1648	}
1649	opacity {
1650	if { $_first != "" && $_activeTf != "" } {
1651	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1652	set tf $_activeTf
1653	set _settings($this-$tf-opacity) $opacity
1654	updatetransferfuncs
1655	}
1656	}
1657
1658	thickness {
1659	if { $_first != "" && $_activeTf != "" } {
1660	set val $_settings($this-thickness)
1661	# Scale values between 0.00001 and 0.01000
1662	set sval [expr {0.0001*double($val)}]
1663	set tf $_activeTf
1664	set _settings($this-$tf-thickness) $sval
1665	updatetransferfuncs
1666	}
1667	}
1668	"outline" {
1669	if { $_first != "" } {
1670	set comp [lindex [$_first components] 0]
1671	set tag $_first-$comp
1672	SendCmd "$tag configure -outline $_settings($this-outline)"
1673	}
1674	}
1675	"isosurface" {
1676	if { [isconnected] } {
1677	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1678	}
1679	}
1680	"grid" {
1681	if { [isconnected] } {
1682	SendCmd "grid visible $_settings($this-grid)"
1683	}
1684	}
1685	"axes" {
1686	if { [isconnected] } {
1687	SendCmd "axis visible $_settings($this-axes)"
1688	}
1689	}
1690	"legend" {
1691	if { $_settings($this-legend) } {
1692	blt::table $itk_component(plotarea) \
1693	0,0 $itk_component(3dview) -fill both \
1694	1,0 $itk_component(legend) -fill x
1695	blt::table configure $itk_component(plotarea) r1 -resize none
1696	} else {
1697	blt::table forget $itk_component(legend)
1698	}
1699	}
1700	"volume" {
1701	if { $_first != "" } {
1702	set comp [lindex [$_first components] 0]
1703	set tag $_first-$comp
1704	SendCmd "$tag configure -volume $_settings($this-volume)"
1705	}
1706	}
1707	"xcutplane" - "ycutplane" - "zcutplane" {
1708	set axis [string range $what 0 0]
1709	set bool $_settings($this-$what)
1710	if { [isconnected] } {
1711	set vols [CurrentVolumeIds -cutplanes]
1712	SendCmd "cutplane state $bool $axis $vols"
1713	}
1714	if { $bool } {
1715	$itk_component(${axis}CutScale) configure -state normal \
1716	-troughcolor white
1717	} else {
1718	$itk_component(${axis}CutScale) configure -state disabled \
1719	-troughcolor grey82
1720	}
1721	}
1722	default {
1723	error "don't know how to fix $what"
1724	}
1725	}
1726	}
1727
1728	# ----------------------------------------------------------------------
1729	# USAGE: ResizeLegend
1730	#
1731	# Used internally to update the legend area whenever it changes size
1732	# or when the field changes. Asks the server to send a new legend
1733	# for the current field.
1734	# ----------------------------------------------------------------------
1735	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1736	set _resizeLegendPending 0
1737	set lineht [font metrics $itk_option(-font) -linespace]
1738	set w [expr {$_width-20}]
1739	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1740
1741	if { $_first == "" } {
1742	return
1743	}
1744	set comp [lindex [$_first components] 0]
1745	set tag $_first-$comp
1746	#set _activeTf [lindex $_obj2style($tag) 0]
1747	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1748	#SendCmd "legend $_activeTf $w $h"
1749	SendCmd "$tag legend $w $h"
1750	} else {
1751	# Can't do this as this will remove the items associated with the
1752	# isomarkers.
1753
1754	#$itk_component(legend) delete all
1755	}
1756	}
1757
1758	#
1759	# NameTransferFunc --
1760	#
1761	# Creates a transfer function name based on the <style> settings in the
1762	# library run.xml file. This placeholder will be used later to create
1763	# and send the actual transfer function once the data info has been sent
1764	# to us by the render server. [We won't know the volume limits until the
1765	# server parses the 3D data and sends back the limits via ReceiveData.]
1766	#
1767	# FIXME: The current way we generate transfer-function names completely
1768	# ignores the -markers option. The problem is that we are forced
1769	# to compute the name from an increasing complex set of values:
1770	# color, levels, marker, opacity. I think we're stuck doing it
1771	# now.
1772	#
1773	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1774	array set style {
1775	-color BCGYR
1776	-levels 6
1777	-opacity 1.0
1778	-light 40
1779	-transp 50
1780	}
1781	array set style [lindex [$dataobj components -style $comp] 0]
1782	set _settings($this-light) $style(-light)
1783	set _settings($this-transp) $style(-transp)
1784	set _settings($this-opacity) [expr $style(-opacity) * 100]
1785	set tf "$style(-color):$style(-levels):$style(-opacity)"
1786	set _obj2style($dataobj-$comp) $tf
1787	lappend _style2objs($tf) $dataobj $comp
1788	return $tf
1789	}
1790
1791	#
1792	# ComputeTransferFunc --
1793	#
1794	# Computes and sends the transfer function to the render server. It's
1795	# assumed that the volume data limits are known and that the global
1796	# transfer-functions slider values have be setup. Both parts are
1797	# needed to compute the relative value (location) of the marker, and
1798	# the alpha map of the transfer function.
1799	#
1800	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1801	array set style {
1802	-color BCGYR
1803	-levels 6
1804	-opacity 1.0
1805	-light 40
1806	-transp 50
1807	}
1808	set dataobj ""; set comp ""
1809	foreach {dataobj comp} $_style2objs($tf) break
1810	if { $dataobj == "" } {
1811	return 0
1812	}
1813	array set style [lindex [$dataobj components -style $comp] 0]
1814
1815
1816	# We have to parse the style attributes for a volume using this
1817	# transfer-function once. This sets up the initial isomarkers for the
1818	# transfer function. The user may add/delete markers, so we have to
1819	# maintain a list of markers for each transfer-function. We use the one
1820	# of the volumes (the first in the list) using the transfer-function as a
1821	# reference.
1822	#
1823	# FIXME: The current way we generate transfer-function names completely
1824	# ignores the -markers option. The problem is that we are forced
1825	# to compute the name from an increasing complex set of values:
1826	# color, levels, marker, opacity. I think the cow's out of the
1827	# barn on this one.
1828
1829	if { ![info exists _isomarkers($tf)] } {
1830	# Have to defer creation of isomarkers until we have data limits
1831	if { [info exists style(-markers)] &&
1832	[llength $style(-markers)] > 0 } {
1833	ParseMarkersOption $tf $style(-markers)
1834	} else {
1835	ParseLevelsOption $tf $style(-levels)
1836	}
1837	}
1838	if { [info exists style(-nonuniformcolors)] } {
1839	foreach { value color } $style(-nonuniformcolors) {
1840	append cmap "$value [Color2RGB $color] "
1841	}
1842	} else {
1843	set cmap [ColorsToColormap $style(-color)]
1844	}
1845	set tag $this-$tf
1846	if { ![info exists _settings($tag-opacity)] } {
1847	set _settings($tag-opacity) $style(-opacity)
1848	}
1849	set max 1.0 ;#$_settings($tag-opacity)
1850
1851	set isovalues {}
1852	foreach m $_isomarkers($tf) {
1853	lappend isovalues [$m relval]
1854	}
1855	# Sort the isovalues
1856	set isovalues [lsort -real $isovalues]
1857
1858	if { ![info exists _settings($tag-thickness)]} {
1859	set _settings($tag-thickness) 0.005
1860	}
1861	set delta $_settings($tag-thickness)
1862
1863	set first [lindex $isovalues 0]
1864	set last [lindex $isovalues end]
1865	set wmap ""
1866	if { $first == "" \|\| $first != 0.0 } {
1867	lappend wmap 0.0 0.0
1868	}
1869	foreach x $isovalues {
1870	set x1 [expr {$x-$delta-0.00001}]
1871	set x2 [expr {$x-$delta}]
1872	set x3 [expr {$x+$delta}]
1873	set x4 [expr {$x+$delta+0.00001}]
1874	if { $x1 < 0.0 } {
1875	set x1 0.0
1876	} elseif { $x1 > 1.0 } {
1877	set x1 1.0
1878	}
1879	if { $x2 < 0.0 } {
1880	set x2 0.0
1881	} elseif { $x2 > 1.0 } {
1882	set x2 1.0
1883	}
1884	if { $x3 < 0.0 } {
1885	set x3 0.0
1886	} elseif { $x3 > 1.0 } {
1887	set x3 1.0
1888	}
1889	if { $x4 < 0.0 } {
1890	set x4 0.0
1891	} elseif { $x4 > 1.0 } {
1892	set x4 1.0
1893	}
1894	# add spikes in the middle
1895	lappend wmap $x1 0.0
1896	lappend wmap $x2 $max
1897	lappend wmap $x3 $max
1898	lappend wmap $x4 0.0
1899	}
1900	if { $last == "" \|\| $last != 1.0 } {
1901	lappend wmap 1.0 0.0
1902	}
1903	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1904	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1905	}
1906
1907	# ----------------------------------------------------------------------
1908	# CONFIGURATION OPTION: -plotbackground
1909	# ----------------------------------------------------------------------
1910	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1911	if { [isconnected] } {
1912	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1913	#fix this!
1914	#SendCmd "color background $r $g $b"
1915	}
1916	}
1917
1918	# ----------------------------------------------------------------------
1919	# CONFIGURATION OPTION: -plotforeground
1920	# ----------------------------------------------------------------------
1921	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1922	if { [isconnected] } {
1923	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1924	#fix this!
1925	#SendCmd "color background $r $g $b"
1926	}
1927	}
1928
1929	# ----------------------------------------------------------------------
1930	# CONFIGURATION OPTION: -plotoutline
1931	# ----------------------------------------------------------------------
1932	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1933	# Must check if we are connected because this routine is called from the
1934	# class body when the -plotoutline itk_option is defined. At that point
1935	# the FlowvisViewer class constructor hasn't been called, so we can't
1936	# start sending commands to visualization server.
1937	if { [isconnected] } {
1938	if {"" == $itk_option(-plotoutline)} {
1939	SendCmd "volume outline state off"
1940	} else {
1941	SendCmd "volume outline state on"
1942	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1943	}
1944	}
1945	}
1946
1947	#
1948	# The -levels option takes a single value that represents the number
1949	# of evenly distributed markers based on the current data range. Each
1950	# marker is a relative value from 0.0 to 1.0.
1951	#
1952	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1953	set c $itk_component(legend)
1954	regsub -all "," $levels " " levels
1955	if {[string is int $levels]} {
1956	for {set i 1} { $i <= $levels } {incr i} {
1957	set x [expr {double($i)/($levels+1)}]
1958	set m [Rappture::IsoMarker \#auto $c $this $tf]
1959	$m relval $x
1960	lappend _isomarkers($tf) $m
1961	}
1962	} else {
1963	foreach x $levels {
1964	set m [Rappture::IsoMarker \#auto $c $this $tf]
1965	$m relval $x
1966	lappend _isomarkers($tf) $m
1967	}
1968	}
1969	}
1970
1971	#
1972	# The -markers option takes a list of zero or more values (the values
1973	# may be separated either by spaces or commas) that have the following
1974	# format:
1975	#
1976	# N% Percent of current total data range. Converted to
1977	# to a relative value between 0.0 and 1.0.
1978	# N Absolute value of marker. If the marker is outside of
1979	# the current range, it will be displayed on the outer
1980	# edge of the legends, but it range it represents will
1981	# not be seen.
1982	#
1983	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1984	set c $itk_component(legend)
1985	regsub -all "," $markers " " markers
1986	foreach marker $markers {
1987	set n [scan $marker "%g%s" value suffix]
1988	if { $n == 2 && $suffix == "%" } {
1989	# ${n}% : Set relative value.
1990	set value [expr {$value * 0.01}]
1991	set m [Rappture::IsoMarker \#auto $c $this $tf]
1992	$m relval $value
1993	lappend _isomarkers($tf) $m
1994	} else {
1995	# ${n} : Set absolute value.
1996	set m [Rappture::IsoMarker \#auto $c $this $tf]
1997	$m absval $value
1998	lappend _isomarkers($tf) $m
1999	}
2000	}
2001	}
2002
2003	# ----------------------------------------------------------------------
2004	# USAGE: UndateTransferFuncs
2005	# ----------------------------------------------------------------------
2006	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
2007	$_dispatcher event -after 100 !send_transfunc
2008	}
2009
2010	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2011	if { $_activeTf == "" } {
2012	error "active transfer function isn't set"
2013	}
2014	set tf $_activeTf
2015	set c $itk_component(legend)
2016	set m [Rappture::IsoMarker \#auto $c $this $tf]
2017	set w [winfo width $c]
2018	$m relval [expr {double($x-10)/($w-20)}]
2019	lappend _isomarkers($tf) $m
2020	updatetransferfuncs
2021	return 1
2022	}
2023
2024	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2025	set tf [$marker transferfunc]
2026	set bool 0
2027	if { [info exists _isomarkers($tf)] } {
2028	set list {}
2029	set marker [namespace tail $marker]
2030	foreach m $_isomarkers($tf) {
2031	set sx [$m screenpos]
2032	if { $m != $marker } {
2033	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2034	$marker relval [$m relval]
2035	itcl::delete object $m
2036	bell
2037	set bool 1
2038	continue
2039	}
2040	}
2041	lappend list $m
2042	}
2043	set _isomarkers($tf) $list
2044	updatetransferfuncs
2045	}
2046	return $bool
2047	}
2048
2049	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2050	set tf [$marker transferfunc]
2051	if { [info exists _isomarkers($tf)] } {
2052	set marker [namespace tail $marker]
2053	foreach m $_isomarkers($tf) {
2054	set sx [$m screenpos]
2055	if { $m != $marker } {
2056	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2057	$m activate $bool
2058	}
2059	}
2060	}
2061	return ""
2062	}
2063
2064	itcl::body Rappture::FlowvisViewer::limits { tf } {
2065	set _limits(vmin) 0.0
2066	set _limits(vmax) 1.0
2067	if { ![info exists _style2objs($tf)] } {
2068	puts stderr "no style2objs for $tf tf=($tf)"
2069	return [array get _limits]
2070	}
2071	set min ""; set max ""
2072	foreach {dataobj comp} $_style2objs($tf) {
2073	set tag $dataobj-$comp
2074	if { ![info exists _serverObjs($tag)] } {
2075	puts stderr "$tag not in serverObjs?"
2076	continue
2077	}
2078	if { ![info exists _limits($tag-min)] } {
2079	puts stderr "$tag no min?"
2080	continue
2081	}
2082	if { $min == "" \|\| $min > $_limits($tag-min) } {
2083	set min $_limits($tag-min)
2084	}
2085	if { $max == "" \|\| $max < $_limits($tag-max) } {
2086	set max $_limits($tag-max)
2087	}
2088	}
2089	if { $min != "" } {
2090	set _limits(vmin) $min
2091	}
2092	if { $max != "" } {
2093	set _limits(vmax) $max
2094	}
2095	return [array get _limits]
2096	}
2097
2098	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2099	foreach { key value } {
2100	grid 0
2101	axes 0
2102	outline 1
2103	volume 1
2104	legend 1
2105	particles 1
2106	lic 1
2107	} {
2108	set _settings($this-$key) $value
2109	}
2110
2111	set fg [option get $itk_component(hull) font Font]
2112	#set bfg [option get $itk_component(hull) boldFont Font]
2113
2114	set inner [$itk_component(main) insert end \
2115	-title "View Settings" \
2116	-icon [Rappture::icon wrench]]
2117	$inner configure -borderwidth 4
2118
2119	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2120	checkbutton $inner.isosurface \
2121	-text "Isosurface shading" \
2122	-variable [itcl::scope _settings($this-isosurface)] \
2123	-command [itcl::code $this AdjustSetting isosurface] \
2124	-font "Arial 9"
2125
2126	checkbutton $inner.axes \
2127	-text "Axes" \
2128	-variable [itcl::scope _settings($this-axes)] \
2129	-command [itcl::code $this AdjustSetting axes] \
2130	-font "Arial 9"
2131
2132	checkbutton $inner.grid \
2133	-text "Grid" \
2134	-variable [itcl::scope _settings($this-grid)] \
2135	-command [itcl::code $this AdjustSetting grid] \
2136	-font "Arial 9"
2137
2138	checkbutton $inner.outline \
2139	-text "Outline" \
2140	-variable [itcl::scope _settings($this-outline)] \
2141	-command [itcl::code $this AdjustSetting outline] \
2142	-font "Arial 9"
2143
2144	checkbutton $inner.legend \
2145	-text "Legend" \
2146	-variable [itcl::scope _settings($this-legend)] \
2147	-command [itcl::code $this AdjustSetting legend] \
2148	-font "Arial 9"
2149
2150	checkbutton $inner.volume \
2151	-text "Volume" \
2152	-variable [itcl::scope _settings($this-volume)] \
2153	-command [itcl::code $this AdjustSetting volume] \
2154	-font "Arial 9"
2155
2156	checkbutton $inner.particles \
2157	-text "Particles" \
2158	-variable [itcl::scope _settings($this-particles)] \
2159	-command [itcl::code $this AdjustSetting particles] \
2160	-font "Arial 9"
2161
2162	checkbutton $inner.lic \
2163	-text "Lic" \
2164	-variable [itcl::scope _settings($this-lic)] \
2165	-command [itcl::code $this AdjustSetting lic] \
2166	-font "Arial 9"
2167
2168	frame $inner.frame
2169
2170	blt::table $inner \
2171	0,0 $inner.axes -cspan 2 -anchor w \
2172	1,0 $inner.grid -cspan 2 -anchor w \
2173	2,0 $inner.outline -cspan 2 -anchor w \
2174	3,0 $inner.volume -cspan 2 -anchor w \
2175	4,0 $inner.legend -cspan 2 -anchor w
2176
2177	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2178
2179	blt::table configure $inner r* -resize none
2180	blt::table configure $inner r5 -resize expand
2181	}
2182
2183	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2184	foreach { key value } {
2185	light2side 0
2186	light 40
2187	transp 50
2188	opacity 100
2189	thickness 350
2190	} {
2191	set _settings($this-$key) $value
2192	}
2193
2194	set inner [$itk_component(main) insert end \
2195	-title "Volume Settings" \
2196	-icon [Rappture::icon volume-on]]
2197	$inner configure -borderwidth 4
2198
2199	set fg [option get $itk_component(hull) font Font]
2200	#set bfg [option get $itk_component(hull) boldFont Font]
2201
2202	checkbutton $inner.vol -text "Show volume" -font $fg \
2203	-text "Volume" \
2204	-variable [itcl::scope _settings($this-volume)] \
2205	-command [itcl::code $this AdjustSetting volume] \
2206	-font "Arial 9"
2207
2208	label $inner.shading -text "Shading:" -font $fg
2209
2210	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2211	-variable [itcl::scope _settings($this-light2side)] \
2212	-command [itcl::code $this AdjustSetting light2side]
2213
2214	label $inner.dim -text "Glow" -font $fg
2215	::scale $inner.light -from 0 -to 100 -orient horizontal \
2216	-variable [itcl::scope _settings($this-light)] \
2217	-width 10 \
2218	-showvalue off -command [itcl::code $this AdjustSetting light]
2219	label $inner.bright -text "Surface" -font $fg
2220
2221	label $inner.fog -text "Clear" -font $fg
2222	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2223	-variable [itcl::scope _settings($this-transp)] \
2224	-width 10 \
2225	-showvalue off -command [itcl::code $this AdjustSetting transp]
2226	label $inner.plastic -text "Opaque" -font $fg
2227
2228	label $inner.clear -text "Clear" -font $fg
2229	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2230	-variable [itcl::scope _settings($this-opacity)] \
2231	-width 10 \
2232	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2233	label $inner.opaque -text "Opaque" -font $fg
2234
2235	label $inner.thin -text "Thin" -font $fg
2236	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2237	-variable [itcl::scope _settings($this-thickness)] \
2238	-width 10 \
2239	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2240	label $inner.thick -text "Thick" -font $fg
2241
2242	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2243	itk_component add colormap {
2244	Rappture::Combobox $inner.colormap -width 10 -editable no
2245	}
2246
2247	$inner.colormap choices insert end \
2248	"BCGYR" "BCGYR" \
2249	"BGYOR" "BGYOR" \
2250	"blue" "blue" \
2251	"blue-to-brown" "blue-to-brown" \
2252	"blue-to-orange" "blue-to-orange" \
2253	"blue-to-grey" "blue-to-grey" \
2254	"green-to-magenta" "green-to-magenta" \
2255	"greyscale" "greyscale" \
2256	"nanohub" "nanohub" \
2257	"rainbow" "rainbow" \
2258	"spectral" "spectral" \
2259	"ROYGB" "ROYGB" \
2260	"RYGCB" "RYGCB" \
2261	"brown-to-blue" "brown-to-blue" \
2262	"grey-to-blue" "grey-to-blue" \
2263	"orange-to-blue" "orange-to-blue" \
2264	"none" "none"
2265
2266	$itk_component(colormap) value "BCGYR"
2267	bind $inner.colormap <<Value>> \
2268	[itcl::code $this AdjustSetting colormap]
2269
2270	blt::table $inner \
2271	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2272	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2273	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2274	3,0 $inner.dim -anchor e -pady 2 \
2275	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2276	3,3 $inner.bright -anchor w -pady 2 \
2277	4,0 $inner.fog -anchor e -pady 2 \
2278	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2279	4,3 $inner.plastic -anchor w -pady 2 \
2280	5,0 $inner.thin -anchor e -pady 2 \
2281	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2282	5,3 $inner.thick -anchor w -pady 2
2283
2284	blt::table configure $inner c0 c1 c3 r* -resize none
2285	blt::table configure $inner r6 -resize expand
2286	}
2287
2288	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2289	set inner [$itk_component(main) insert end \
2290	-title "Cutplane Settings" \
2291	-icon [Rappture::icon cutbutton]]
2292	$inner configure -borderwidth 4
2293
2294	# X-value slicer...
2295	itk_component add xCutButton {
2296	Rappture::PushButton $inner.xbutton \
2297	-onimage [Rappture::icon x-cutplane] \
2298	-offimage [Rappture::icon x-cutplane] \
2299	-command [itcl::code $this AdjustSetting xcutplane] \
2300	-variable [itcl::scope _settings($this-xcutplane)]
2301	}
2302	Rappture::Tooltip::for $itk_component(xCutButton) \
2303	"Toggle the X cut plane on/off"
2304
2305	itk_component add xCutScale {
2306	::scale $inner.xval -from 100 -to 0 \
2307	-width 10 -orient vertical -showvalue off \
2308	-borderwidth 1 -highlightthickness 0 \
2309	-command [itcl::code $this Slice move x] \
2310	-variable [itcl::scope _settings($this-xcutposition)]
2311	} {
2312	usual
2313	ignore -borderwidth -highlightthickness
2314	}
2315	# Set the default cutplane value before disabling the scale.
2316	$itk_component(xCutScale) set 50
2317	$itk_component(xCutScale) configure -state disabled
2318	Rappture::Tooltip::for $itk_component(xCutScale) \
2319	"@[itcl::code $this SlicerTip x]"
2320
2321	# Y-value slicer...
2322	itk_component add yCutButton {
2323	Rappture::PushButton $inner.ybutton \
2324	-onimage [Rappture::icon y-cutplane] \
2325	-offimage [Rappture::icon y-cutplane] \
2326	-command [itcl::code $this AdjustSetting ycutplane] \
2327	-variable [itcl::scope _settings($this-ycutplane)]
2328	}
2329	Rappture::Tooltip::for $itk_component(yCutButton) \
2330	"Toggle the Y cut plane on/off"
2331
2332	itk_component add yCutScale {
2333	::scale $inner.yval -from 100 -to 0 \
2334	-width 10 -orient vertical -showvalue off \
2335	-borderwidth 1 -highlightthickness 0 \
2336	-command [itcl::code $this Slice move y] \
2337	-variable [itcl::scope _settings($this-ycutposition)]
2338	} {
2339	usual
2340	ignore -borderwidth -highlightthickness
2341	}
2342	Rappture::Tooltip::for $itk_component(yCutScale) \
2343	"@[itcl::code $this SlicerTip y]"
2344	# Set the default cutplane value before disabling the scale.
2345	$itk_component(yCutScale) set 50
2346	$itk_component(yCutScale) configure -state disabled
2347
2348	# Z-value slicer...
2349	itk_component add zCutButton {
2350	Rappture::PushButton $inner.zbutton \
2351	-onimage [Rappture::icon z-cutplane] \
2352	-offimage [Rappture::icon z-cutplane] \
2353	-command [itcl::code $this AdjustSetting zcutplane] \
2354	-variable [itcl::scope _settings($this-zcutplane)]
2355	}
2356	Rappture::Tooltip::for $itk_component(zCutButton) \
2357	"Toggle the Z cut plane on/off"
2358
2359	itk_component add zCutScale {
2360	::scale $inner.zval -from 100 -to 0 \
2361	-width 10 -orient vertical -showvalue off \
2362	-borderwidth 1 -highlightthickness 0 \
2363	-command [itcl::code $this Slice move z] \
2364	-variable [itcl::scope _settings($this-zcutposition)]
2365	} {
2366	usual
2367	ignore -borderwidth -highlightthickness
2368	}
2369	$itk_component(zCutScale) set 50
2370	$itk_component(zCutScale) configure -state disabled
2371	#$itk_component(zCutScale) configure -state disabled
2372	Rappture::Tooltip::for $itk_component(zCutScale) \
2373	"@[itcl::code $this SlicerTip z]"
2374
2375	blt::table $inner \
2376	1,1 $itk_component(xCutButton) \
2377	1,2 $itk_component(yCutButton) \
2378	1,3 $itk_component(zCutButton) \
2379	0,1 $itk_component(xCutScale) \
2380	0,2 $itk_component(yCutScale) \
2381	0,3 $itk_component(zCutScale) \
2382
2383	blt::table configure $inner r0 r1 c* -resize none
2384	blt::table configure $inner r2 c4 -resize expand
2385	blt::table configure $inner c0 -width 2
2386	blt::table configure $inner c1 c2 c3 -padx 2
2387	}
2388
2389	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2390	set inner [$itk_component(main) insert end \
2391	-title "Camera Settings" \
2392	-icon [Rappture::icon camera]]
2393	$inner configure -borderwidth 4
2394
2395	set row 0
2396	label $inner.orientation_l -text "View" -font "Arial 9"
2397	itk_component add orientation {
2398	Rappture::Combobox $inner.orientation -width 10 -editable no
2399	}
2400	$inner.orientation choices insert end \
2401	"1 0 0 0" "front" \
2402	"0 0 1 0" "back" \
2403	"0.707107 -0.707107 0 0" "top" \
2404	"0.707107 0.707107 0 0" "bottom" \
2405	"0.707107 0 -0.707107 0" "left" \
2406	"0.707107 0 0.707107 0" "right" \
2407	"0.853553 -0.353553 0.353553 0.146447" "default"
2408	$itk_component(orientation) value "default"
2409	bind $inner.orientation <<Value>> [itcl::code $this SetOrientation]
2410	if 1 {
2411	blt::table $inner \
2412	$row,0 $inner.orientation_l -anchor e -pady 2 \
2413	$row,1 $inner.orientation -anchor w -pady 2 -fill x
2414	blt::table configure $inner r$row -resize none
2415	incr row
2416	}
2417
2418	set labels { qw qx qy qz pan-x pan-y zoom }
2419	foreach tag $labels {
2420	label $inner.${tag}label -text $tag -font "Arial 9"
2421	entry $inner.${tag} -font "Arial 9" -bg white \
2422	-textvariable [itcl::scope _settings($this-$tag)]
2423	bind $inner.${tag} <KeyPress-Return> \
2424	[itcl::code $this camera set ${tag}]
2425	blt::table $inner \
2426	$row,0 $inner.${tag}label -anchor e -pady 2 \
2427	$row,1 $inner.${tag} -anchor w -pady 2
2428	blt::table configure $inner r$row -resize none
2429	incr row
2430	}
2431	blt::table configure $inner c0 c1 -resize none
2432	blt::table configure $inner c2 -resize expand
2433	blt::table configure $inner r$row -resize expand
2434	}
2435
2436	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2437	set flowobj ""
2438	foreach key [array names _obj2flow] {
2439	set flowobj $_obj2flow($key)
2440	break
2441	}
2442	if { $flowobj == "" } {
2443	return
2444	}
2445	if { [winfo exists $w.frame] } {
2446	destroy $w.frame
2447	}
2448	set inner [frame $w.frame]
2449	blt::table $w \
2450	5,0 $inner -fill both -cspan 2 -anchor nw
2451	array set hints [$flowobj hints]
2452	checkbutton $inner.showstreams -text "Streams Plane" \
2453	-variable [itcl::scope _settings($this-streams)] \
2454	-command [itcl::code $this streams $key $hints(name)] \
2455	-font "Arial 9"
2456	Rappture::Tooltip::for $inner.showstreams $hints(description)
2457
2458	checkbutton $inner.showarrows -text "Arrows" \
2459	-variable [itcl::scope _settings($this-arrows)] \
2460	-command [itcl::code $this arrows $key $hints(name)] \
2461	-font "Arial 9"
2462
2463	label $inner.particles -text "Particles" -font "Arial 9 bold"
2464	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2465
2466	blt::table $inner \
2467	1,0 $inner.showstreams -anchor w \
2468	2,0 $inner.showarrows -anchor w
2469	blt::table configure $inner c0 c1 -resize none
2470	blt::table configure $inner c2 -resize expand
2471
2472	set row 3
2473	set particles [$flowobj particles]
2474	if { [llength $particles] > 0 } {
2475	blt::table $inner $row,0 $inner.particles -anchor w
2476	incr row
2477	}
2478	foreach part $particles {
2479	array unset info
2480	array set info $part
2481	set name $info(name)
2482	if { ![info exists _settings($this-particles-$name)] } {
2483	set _settings($this-particles-$name) $info(hide)
2484	}
2485	checkbutton $inner.part$row -text $info(label) \
2486	-variable [itcl::scope _settings($this-particles-$name)] \
2487	-onvalue 0 -offvalue 1 \
2488	-command [itcl::code $this particles $key $name] \
2489	-font "Arial 9"
2490	Rappture::Tooltip::for $inner.part$row $info(description)
2491	blt::table $inner $row,0 $inner.part$row -anchor w
2492	if { !$_settings($this-particles-$name) } {
2493	$inner.part$row select
2494	}
2495	incr row
2496	}
2497	set boxes [$flowobj boxes]
2498	if { [llength $boxes] > 0 } {
2499	blt::table $inner $row,0 $inner.boxes -anchor w
2500	incr row
2501	}
2502	foreach box $boxes {
2503	array unset info
2504	array set info $box
2505	set name $info(name)
2506	if { ![info exists _settings($this-box-$name)] } {
2507	set _settings($this-box-$name) $info(hide)
2508	}
2509	checkbutton $inner.box$row -text $info(label) \
2510	-variable [itcl::scope _settings($this-box-$name)] \
2511	-onvalue 0 -offvalue 1 \
2512	-command [itcl::code $this box $key $name] \
2513	-font "Arial 9"
2514	Rappture::Tooltip::for $inner.box$row $info(description)
2515	blt::table $inner $row,0 $inner.box$row -anchor w
2516	if { !$_settings($this-box-$name) } {
2517	$inner.box$row select
2518	}
2519	incr row
2520	}
2521	blt::table configure $inner r* -resize none
2522	blt::table configure $inner r$row -resize expand
2523	blt::table configure $inner c3 -resize expand
2524	event generate [winfo parent [winfo parent $w]] <Configure>
2525	}
2526
2527	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2528	set bool $_settings($this-particles-$name)
2529	SendCmd "$tag particles configure {$name} -hide $bool"
2530	}
2531
2532	itcl::body Rappture::FlowvisViewer::box { tag name } {
2533	set bool $_settings($this-box-$name)
2534	SendCmd "$tag box configure {$name} -hide $bool"
2535	}
2536
2537	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2538	set bool $_settings($this-streams)
2539	SendCmd "$tag configure -slice $bool"
2540	}
2541
2542	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2543	set bool $_settings($this-arrows)
2544	SendCmd "$tag configure -arrows $bool"
2545	}
2546
2547	# ----------------------------------------------------------------------
2548	# USAGE: Slice move x\|y\|z <newval>
2549	#
2550	# Called automatically when the user drags the slider to move the
2551	# cut plane that slices 3D data. Gets the current value from the
2552	# slider and moves the cut plane to the appropriate point in the
2553	# data set.
2554	# ----------------------------------------------------------------------
2555	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2556	switch -- $option {
2557	move {
2558	if {[llength $args] != 2} {
2559	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2560	}
2561	set axis [lindex $args 0]
2562	set newval [lindex $args 1]
2563	set newpos [expr {0.01*$newval}]
2564
2565	# show the current value in the readout
2566
2567	set ids [CurrentVolumeIds -cutplanes]
2568	SendCmd "cutplane position $newpos $axis $ids"
2569	}
2570	default {
2571	error "bad option \"$option\": should be axis, move, or volume"
2572	}
2573	}
2574	}
2575
2576	# ----------------------------------------------------------------------
2577	# USAGE: SlicerTip <axis>
2578	#
2579	# Used internally to generate a tooltip for the x/y/z slicer controls.
2580	# Returns a message that includes the current slicer value.
2581	# ----------------------------------------------------------------------
2582	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2583	set val [$itk_component(${axis}CutScale) get]
2584	# set val [expr {0.01*($val-50)
2585	# *($_limits(${axis}max)-$_limits(${axis}min))
2586	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2587	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2588	}
2589
2590	itcl::body Rappture::FlowvisViewer::Resize {} {
2591	$_arcball resize $_width $_height
2592	SendCmd "screen size $_width $_height"
2593	set _resizePending 0
2594	}
2595
2596	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2597	set _width $w
2598	set _height $h
2599	$_arcball resize $w $h
2600	if { !$_resizePending } {
2601	$_dispatcher event -after 200 !resize
2602	set _resizePending 1
2603	}
2604	}
2605
2606	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2607	if { !$_resizeLegendPending } {
2608	$_dispatcher event -after 100 !legend
2609	set _resizeLegendPending 1
2610	}
2611	}
2612
2613	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2614	set _flow(goto) $nSteps
2615	if { !$_gotoPending } {
2616	$_dispatcher event -after 1000 !goto
2617	set _gotoPending 1
2618	}
2619	}
2620
2621	# camera --
2622	itcl::body Rappture::FlowvisViewer::camera {option args} {
2623	switch -- $option {
2624	"show" {
2625	puts [array get _view]
2626	}
2627	"set" {
2628	set who [lindex $args 0]
2629	set x $_settings($this-$who)
2630	set code [catch { string is double $x } result]
2631	if { $code != 0 \|\| !$result } {
2632	set _settings($this-$who) $_view($who)
2633	return
2634	}
2635	switch -- $who {
2636	"pan-x" - "pan-y" {
2637	set _view($who) $_settings($this-$who)
2638	PanCamera
2639	}
2640	"qx" - "qy" - "qz" - "qw" {
2641	set _view($who) $_settings($this-$who)
2642	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2643	$_arcball quaternion $q
2644	SendCmd "camera orient $q"
2645	}
2646	"zoom" {
2647	set _view($who) $_settings($this-$who)
2648	SendCmd "camera zoom $_view(zoom)"
2649	}
2650	}
2651	}
2652	}
2653	}
2654
2655	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2656	set tag "$dataobj-$comp"
2657	if { ![info exists _obj2flow($tag)] } {
2658	append cmd "flow add $tag\n"
2659	append cmd "$tag data follows $nbytes $extents\n"
2660	return $cmd
2661	}
2662	set flowobj $_obj2flow($tag)
2663	if { $flowobj == "" } {
2664	puts stderr "no flowobj"
2665	return ""
2666	}
2667	set cmd {}
2668	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2669	array set info [$flowobj hints]
2670	set _settings($this-volume) $info(volume)
2671	set _settings($this-outline) $info(outline)
2672	set _settings($this-arrows) $info(arrows)
2673	set _settings($this-duration) $info(duration)
2674	$itk_component(speed) value $info(speed)
2675	append cmd "flow add $tag"
2676	append cmd " -position $info(position)"
2677	append cmd " -axis $info(axis)"
2678	append cmd " -volume $info(volume)"
2679	append cmd " -outline $info(outline)"
2680	append cmd " -slice $info(streams)"
2681	append cmd " -arrows $info(arrows)\n"
2682	foreach part [$flowobj particles] {
2683	array unset info
2684	array set info $part
2685	set color [Color2RGB $info(color)]
2686	append cmd "$tag particles add $info(name)"
2687	append cmd " -position $info(position)"
2688	append cmd " -hide $info(hide)"
2689	append cmd " -axis $info(axis)"
2690	append cmd " -color {$color}"
2691	append cmd " -size $info(size)\n"
2692	}
2693	foreach box [$flowobj boxes] {
2694	array unset info
2695	set info(corner1) ""
2696	set info(corner2) ""
2697	array set info $box
2698	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2699	continue
2700	}
2701	set color [Color2RGB $info(color)]
2702	append cmd "$tag box add $info(name)"
2703	append cmd " -color {$color}"
2704	append cmd " -hide $info(hide)"
2705	append cmd " -linewidth $info(linewidth) "
2706	append cmd " -corner1 {$info(corner1)} "
2707	append cmd " -corner2 {$info(corner2)}\n"
2708	}
2709	append cmd "$tag data follows $nbytes $extents\n"
2710	return $cmd
2711	}
2712
2713
2714	#
2715	# flow --
2716	#
2717	# Called when the user clicks on the stop or play buttons
2718	# for flow visualization.
2719	#
2720	# $this flow play
2721	# $this flow stop
2722	# $this flow toggle
2723	# $this flow reset
2724	# $this flow pause
2725	# $this flow next
2726	#
2727	itcl::body Rappture::FlowvisViewer::flow { args } {
2728	set option [lindex $args 0]
2729	switch -- $option {
2730	"goto2" {
2731	puts stderr "actually sending \"flow goto $_flow(goto)\""
2732	SendCmd "flow goto $_flow(goto)"
2733	set _gotoPending 0
2734	}
2735	"goto" {
2736	puts stderr "flow goto to $_settings($this-currenttime)"
2737	# Figure out how many steps to the current time based upon
2738	# the speed and duration.
2739	set current $_settings($this-currenttime)
2740	set speed [$itk_component(speed) value]
2741	set time [str2millisecs $_settings($this-duration)]
2742	$itk_component(dial) configure -max $time
2743	set delay [expr int(round(500.0/$speed))]
2744	set timePerStep [expr {double($time) / $delay}]
2745	set nSteps [expr {int(ceil($current/$timePerStep))}]
2746	EventuallyGoto $nSteps
2747	}
2748	"speed" {
2749	set speed [$itk_component(speed) value]
2750	set _flow(delay) [expr int(round(500.0/$speed))]
2751	}
2752	"duration" {
2753	set max [str2millisecs $_settings($this-duration)]
2754	if { $max < 0 } {
2755	bell
2756	return
2757	}
2758	set _flow(duration) $max
2759	set _settings($this-duration) [millisecs2str $max]
2760	$itk_component(dial) configure -max $max
2761	}
2762	"off" {
2763	set _flow(state) 0
2764	$_dispatcher cancel !play
2765	$itk_component(play) deselect
2766	}
2767	"on" {
2768	flow speed
2769	flow duration
2770	set _flow(state) 1
2771	set _settings($this-currenttime) 0
2772	$itk_component(play) select
2773	}
2774	"stop" {
2775	if { $_flow(state) } {
2776	flow off
2777	flow reset
2778	}
2779	}
2780	"pause" {
2781	if { $_flow(state) } {
2782	flow off
2783	}
2784	}
2785	"play" {
2786	# If the flow is currently off, then restart it.
2787	if { !$_flow(state) } {
2788	flow on
2789	# If we're at the end of the flow, reset the flow.
2790	set _settings($this-currenttime) \
2791	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2792	if { $_settings($this-currenttime) >= $_flow(duration) } {
2793	set _settings($this-step) 1
2794	SendCmd "flow reset"
2795	}
2796	flow next
2797	}
2798	}
2799	"toggle" {
2800	if { $_settings($this-play) } {
2801	flow play
2802	} else {
2803	flow pause
2804	}
2805	}
2806	"reset" {
2807	set _settings($this-currenttime) 0
2808	SendCmd "flow reset"
2809	if { !$_flow(state) } {
2810	SendCmd "flow next"
2811	}
2812	}
2813	"next" {
2814	if { ![winfo viewable $itk_component(3dview)] } {
2815	flow stop
2816	return
2817	}
2818	set _settings($this-currenttime) \
2819	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2820	if { $_settings($this-currenttime) >= $_flow(duration) } {
2821	if { !$_settings($this-loop) } {
2822	flow off
2823	return
2824	}
2825	flow reset
2826	} else {
2827	SendCmd "flow next"
2828	}
2829	$_dispatcher event -after $_flow(delay) !play
2830	}
2831	default {
2832	error "bad option \"$option\": should be play, stop, toggle, or reset."
2833	}
2834	}
2835	}
2836
2837	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2838	switch -- $option {
2839	"start" {
2840	$_dispatcher dispatch $this !waiticon \
2841	"[itcl::code $this WaitIcon "next" $widget] ; list"
2842	set _icon 0
2843	$widget configure -image [Rappture::icon bigroller${_icon}]
2844	$_dispatcher event -after 100 !waiticon
2845	}
2846	"next" {
2847	incr _icon
2848	if { $_icon >= 8 } {
2849	set _icon 0
2850	}
2851	$widget configure -image [Rappture::icon bigroller${_icon}]
2852	$_dispatcher event -after 100 !waiticon
2853	}
2854	"stop" {
2855	$_dispatcher cancel !waiticon
2856	}
2857	}
2858	}
2859
2860	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2861	set token "print[incr _nextToken]"
2862	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2863	set $var ""
2864
2865	# Setup an automatic timeout procedure.
2866	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2867
2868	set popup .flowvisviewerprint
2869	if {![winfo exists $popup]} {
2870	Rappture::Balloon $popup -title "Generating file..."
2871	set inner [$popup component inner]
2872	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2873	label $inner.please -text "This may take a minute." -font "Arial 10"
2874	label $inner.icon -image [Rappture::icon bigroller0]
2875	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2876	-command [list set $var ""]
2877	blt::table $inner \
2878	0,0 $inner.title -cspan 2 \
2879	1,0 $inner.please -anchor w \
2880	1,1 $inner.icon -anchor e \
2881	2,0 $inner.cancel -cspan 2
2882	blt::table configure $inner r0 -pady 4
2883	blt::table configure $inner r2 -pady 4
2884	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2885	} else {
2886	set inner [$popup component inner]
2887	}
2888
2889	$_dispatcher event -after 60000 !pngtimeout
2890	WaitIcon start $inner.icon
2891	grab set $inner
2892	focus $inner.cancel
2893
2894	SendCmd "print $token $width $height"
2895
2896	$popup activate $widget below
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	# Timeout is set to 10 minutes.
2947	$_dispatcher event -after 600000 !movietimeout
2948	WaitIcon start $inner.icon
2949	grab set $inner
2950	focus $inner.cancel
2951
2952	flow duration
2953	flow speed
2954	set nframes [expr round($_flow(duration) / $_flow(delay))]
2955	set framerate [expr 1000.0 / $_flow(delay)]
2956
2957	# These are specific to MPEG1 video generation
2958	set framerate 25.0
2959	set bitrate 6.0e+6
2960
2961	set start [clock seconds]
2962	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2963
2964	$popup activate $widget below
2965	update
2966	# We wait here until
2967	# 1. the movie is delivered or
2968	# 2. we've timed out or
2969	# 3. the user has canceled the operation.b
2970	tkwait variable $var
2971
2972	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2973
2974	# Clean up.
2975	$_dispatcher cancel !movietimeout
2976	WaitIcon stop $inner.icon
2977	grab release $inner
2978	$popup deactivate
2979	destroy $popup
2980	update
2981
2982	# This will both cancel the movie generation (if it hasn't already
2983	# completed) and reset the flow.
2984	SendCmd "flow reset"
2985	if { $_hardcopy($this-$token) != "" } {
2986	return [list .mpg $_hardcopy($this-$token)]
2987	}
2988	return ""
2989	}
2990
2991	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
2992	set parts [split $value :]
2993	set secs 0
2994	set mins 0
2995	if { [llength $parts] == 1 } {
2996	scan [lindex $parts 0] "%d" secs
2997	} else {
2998	scan [lindex $parts 1] "%d" secs
2999	scan [lindex $parts 0] "%d" mins
3000	}
3001	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
3002	if { $ms > 600000.0 } {
3003	set ms 600000.0
3004	}
3005	if { $ms == 0.0 } {
3006	set ms 60000.0
3007	}
3008	return $ms
3009	}
3010
3011	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
3012	set min [expr floor($value / 60000.0)]
3013	set sec [expr ($value - ($min*60000.0)) / 1000.0]
3014	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
3015	}
3016
3017	itcl::body Rappture::FlowvisViewer::SetOrientation {} {
3018	set quat [$itk_component(orientation) value]
3019	set quat [$itk_component(orientation) translate $quat]
3020	foreach name { qw qx qy qz } comp $quat {
3021	set _view($name) $comp
3022	set _settings($this-$name) $comp
3023	}
3024	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3025	$_arcball quaternion $q
3026	SendCmd "camera orient $q"
3027	SendCmd "camera reset"
3028	set $_view(pan-x) 0.0
3029	set $_view(pan-y) 0.0
3030	set $_view(zoom) 1.0
3031	set _settings($this-pan-x) $_view(pan-x)
3032	set _settings($this-pan-y) $_view(pan-y)
3033	set _settings($this-zoom) $_view(zoom)
3034	}

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