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source: trunk/gui/scripts/flowvisviewer.tcl @ 3515

Last change on this file since 3515 was 3498, checked in by ldelgass, 12 years ago
Delay Rebuild until window size larger than 1x1 - copying this code from VTK viewers to nanovis viewers. Helps get proper aspect for initial camera reset. There is still a problem with the updir coming too late (needs to come before camera reset).
File size: 104.7 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	set w [winfo width $itk_component(3dview)]
1158	set h [winfo height $itk_component(3dview)]
1159	if { $w < 2 \|\| $h < 2 } {
1160	$_dispatcher event -idle !rebuild
1161	return
1162	}
1163
1164	# Turn on buffering of commands to the server. We don't want to
1165	# be preempted by a server disconnect/reconnect (which automatically
1166	# generates a new call to Rebuild).
1167	StartBufferingCommands
1168
1169	# Hide all the isomarkers. Can't remove them. Have to remember the
1170	# settings since the user may have created/deleted/moved markers.
1171
1172	foreach tf [array names _isomarkers] {
1173	foreach m $_isomarkers($tf) {
1174	$m visible no
1175	}
1176	}
1177
1178	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
1179	set _width $w
1180	set _height $h
1181	$_arcball resize $w $h
1182	Resize
1183	}
1184
1185	set _first ""
1186
1187	if { $_reset } {
1188	if { $_reportClientInfo } {
1189	# Tell the server the name of the tool, the version, and
1190	# dataset that we are rendering. Have to do it here because
1191	# we don't know what data objects are using the renderer until
1192	# be get here.
1193	global env
1194
1195	set info {}
1196	set user "???"
1197	if { [info exists env(USER)] } {
1198	set user $env(USER)
1199	}
1200	set session "???"
1201	if { [info exists env(SESSION)] } {
1202	set session $env(SESSION)
1203	}
1204	lappend info "hub" [exec hostname]
1205	lappend info "client" "flowvisviewer"
1206	lappend info "user" $user
1207	lappend info "session" $session
1208	SendCmd "clientinfo [list $info]"
1209	}
1210	}
1211	foreach dataobj [get] {
1212	foreach comp [$dataobj components] {
1213	set tag $dataobj-$comp
1214	# Send the data as one huge base64-encoded mess -- yuck!
1215	set data [$dataobj blob $comp]
1216	set nbytes [string length $data]
1217	if { $_reportClientInfo } {
1218	set info {}
1219	lappend info "tool_id" [$dataobj hints toolId]
1220	lappend info "tool_name" [$dataobj hints toolName]
1221	lappend info "tool_version" [$dataobj hints toolRevision]
1222	lappend info "tool_title" [$dataobj hints toolTitle]
1223	lappend info "dataset_label" [$dataobj hints label]
1224	lappend info "dataset_size" $nbytes
1225	lappend info "dataset_tag" $tag
1226	SendCmd "clientinfo [list $info]"
1227	}
1228	set extents [$dataobj extents $comp]
1229	# I have a field. Is a vector field or a volume field?
1230	if { $extents == 1 } {
1231	set cmd "volume data follows $nbytes $tag\n"
1232	} else {
1233	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
1234	if { $cmd == "" } {
1235	puts stderr "no command"
1236	continue
1237	}
1238	}
1239	append _outbuf $cmd
1240	append _outbuf $data
1241	NameTransferFunc $dataobj $comp
1242	set _recvObjs($tag) 1
1243	}
1244	}
1245
1246	set _first [lindex [get] 0]
1247
1248	# Reset the camera and other view parameters
1249	InitSettings light2side light transp isosurface grid axes volume outline
1250
1251	# nothing to send -- activate the proper volume
1252	if {"" != $_first} {
1253	AdjustSetting light
1254	AdjustSetting transp
1255	set axis [$_first hints updir]
1256	if {"" != $axis} {
1257	SendCmd "up $axis"
1258	}
1259	set location [$_first hints camera]
1260	if { $location != "" } {
1261	array set _view $location
1262	}
1263
1264	}
1265	set _settings($this-qw) $_view(qw)
1266	set _settings($this-qx) $_view(qx)
1267	set _settings($this-qy) $_view(qy)
1268	set _settings($this-qz) $_view(qz)
1269	set _settings($this-pan-x) $_view(pan-x)
1270	set _settings($this-pan-y) $_view(pan-y)
1271	set _settings($this-zoom) $_view(zoom)
1272
1273	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1274	$_arcball quaternion $q
1275	SendCmd "camera orient $q"
1276	SendCmd "camera reset"
1277	PanCamera
1278	SendCmd "camera zoom $_view(zoom)"
1279
1280	foreach dataobj [get] {
1281	foreach comp [$dataobj components] {
1282	NameTransferFunc $dataobj $comp
1283	}
1284	}
1285
1286	# nothing to send -- activate the proper ivol
1287	set _first [lindex [get] 0]
1288	if {"" != $_first} {
1289	set axis [$_first hints updir]
1290	if {"" != $axis} {
1291	SendCmd "up $axis"
1292	}
1293	set location [$_first hints camera]
1294	if { $location != "" } {
1295	array set _view $location
1296	}
1297	set comp [lindex [$_first components] 0]
1298	set _activeTf [lindex $_obj2style($_first-$comp) 0]
1299	}
1300
1301
1302	# sync the state of slicers
1303	set vols [CurrentVolumeIds -cutplanes]
1304	foreach axis {x y z} {
1305	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1306	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1307	SendCmd "cutplane position $pos $axis $vols"
1308	}
1309	SendCmd "volume data state $_settings($this-volume)"
1310	EventuallyResizeLegend
1311
1312	# Actually write the commands to the server socket. If it fails, we don't
1313	# care. We're finished here.
1314	blt::busy hold $itk_component(hull)
1315	StopBufferingCommands
1316	blt::busy release $itk_component(hull)
1317	set _reset 0
1318	}
1319
1320	# ----------------------------------------------------------------------
1321	# USAGE: CurrentVolumeIds ?-cutplanes?
1322	#
1323	# Returns a list of volume server IDs for the current volume being
1324	# displayed. This is normally a single ID, but it might be a list
1325	# of IDs if the current data object has multiple components.
1326	# ----------------------------------------------------------------------
1327	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1328	return ""
1329	if { $_first == "" } {
1330	return
1331	}
1332	foreach key [array names _serverObjs -] {
1333	if {[string match $_first-* $key]} {
1334	array set style {
1335	-cutplanes 1
1336	}
1337	foreach {dataobj comp} [split $key -] break
1338	array set style [lindex [$dataobj components -style $comp] 0]
1339	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1340	lappend rlist $_serverObjs($key)
1341	}
1342	}
1343	}
1344	return $rlist
1345	}
1346
1347	# ----------------------------------------------------------------------
1348	# USAGE: Zoom in
1349	# USAGE: Zoom out
1350	# USAGE: Zoom reset
1351	#
1352	# Called automatically when the user clicks on one of the zoom
1353	# controls for this widget. Changes the zoom for the current view.
1354	# ----------------------------------------------------------------------
1355	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1356	switch -- $option {
1357	"in" {
1358	set _view(zoom) [expr {$_view(zoom)*1.25}]
1359	set _settings($this-zoom) $_view(zoom)
1360	SendCmd "camera zoom $_view(zoom)"
1361	}
1362	"out" {
1363	set _view(zoom) [expr {$_view(zoom)*0.8}]
1364	set _settings($this-zoom) $_view(zoom)
1365	SendCmd "camera zoom $_view(zoom)"
1366	}
1367	"reset" {
1368	array set _view {
1369	qw 0.853553
1370	qx -0.353553
1371	qy 0.353553
1372	qz 0.146447
1373	zoom 1.0
1374	pan-x 0
1375	pan-y 0
1376	}
1377	if { $_first != "" } {
1378	set location [$_first hints camera]
1379	if { $location != "" } {
1380	array set _view $location
1381	}
1382	}
1383	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1384	$_arcball quaternion $q
1385	SendCmd "camera orient $q"
1386	SendCmd "camera reset"
1387	set _settings($this-qw) $_view(qw)
1388	set _settings($this-qx) $_view(qx)
1389	set _settings($this-qy) $_view(qy)
1390	set _settings($this-qz) $_view(qz)
1391	set _settings($this-pan-x) $_view(pan-x)
1392	set _settings($this-pan-y) $_view(pan-y)
1393	set _settings($this-zoom) $_view(zoom)
1394	$itk_component(orientation) value "default"
1395	}
1396	}
1397	}
1398
1399	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1400	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1401	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1402	set x $_view(pan-x)
1403	set y $_view(pan-y)
1404	SendCmd "camera pan $x $y"
1405	}
1406
1407	# ----------------------------------------------------------------------
1408	# USAGE: Rotate click <x> <y>
1409	# USAGE: Rotate drag <x> <y>
1410	# USAGE: Rotate release <x> <y>
1411	#
1412	# Called automatically when the user clicks/drags/releases in the
1413	# plot area. Moves the plot according to the user's actions.
1414	# ----------------------------------------------------------------------
1415	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1416	switch -- $option {
1417	click {
1418	$itk_component(3dview) configure -cursor fleur
1419	set _click(x) $x
1420	set _click(y) $y
1421	}
1422	drag {
1423	if {[array size _click] == 0} {
1424	Rotate click $x $y
1425	} else {
1426	set w [winfo width $itk_component(3dview)]
1427	set h [winfo height $itk_component(3dview)]
1428	if {$w <= 0 \|\| $h <= 0} {
1429	return
1430	}
1431
1432	if {[catch {
1433	# this fails sometimes for no apparent reason
1434	set dx [expr {double($x-$_click(x))/$w}]
1435	set dy [expr {double($y-$_click(y))/$h}]
1436	}]} {
1437	return
1438	}
1439
1440	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1441	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1442	set _settings($this-qw) $_view(qw)
1443	set _settings($this-qx) $_view(qx)
1444	set _settings($this-qy) $_view(qy)
1445	set _settings($this-qz) $_view(qz)
1446	SendCmd "camera orient $q"
1447
1448	set _click(x) $x
1449	set _click(y) $y
1450	}
1451	}
1452	release {
1453	Rotate drag $x $y
1454	$itk_component(3dview) configure -cursor ""
1455	catch {unset _click}
1456	}
1457	default {
1458	error "bad option \"$option\": should be click, drag, release"
1459	}
1460	}
1461	}
1462
1463	# ----------------------------------------------------------------------
1464	# USAGE: $this Pan click x y
1465	# $this Pan drag x y
1466	# $this Pan release x y
1467	#
1468	# Called automatically when the user clicks on one of the zoom
1469	# controls for this widget. Changes the zoom for the current view.
1470	# ----------------------------------------------------------------------
1471	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1472	# Experimental stuff
1473	set w [winfo width $itk_component(3dview)]
1474	set h [winfo height $itk_component(3dview)]
1475	if { $option == "set" } {
1476	set x [expr $x / double($w)]
1477	set y [expr $y / double($h)]
1478	set _view(pan-x) [expr $_view(pan-x) + $x]
1479	set _view(pan-y) [expr $_view(pan-y) + $y]
1480	PanCamera
1481	set _settings($this-pan-x) $_view(pan-x)
1482	set _settings($this-pan-y) $_view(pan-y)
1483	return
1484	}
1485	if { $option == "click" } {
1486	set _click(x) $x
1487	set _click(y) $y
1488	$itk_component(3dview) configure -cursor hand1
1489	}
1490	if { $option == "drag" \|\| $option == "release" } {
1491	set dx [expr ($_click(x) - $x)/double($w)]
1492	set dy [expr ($_click(y) - $y)/double($h)]
1493	set _click(x) $x
1494	set _click(y) $y
1495	set _view(pan-x) [expr $_view(pan-x) - $dx]
1496	set _view(pan-y) [expr $_view(pan-y) - $dy]
1497	PanCamera
1498	set _settings($this-pan-x) $_view(pan-x)
1499	set _settings($this-pan-y) $_view(pan-y)
1500	}
1501	if { $option == "release" } {
1502	$itk_component(3dview) configure -cursor ""
1503	}
1504	}
1505
1506
1507	# ----------------------------------------------------------------------
1508	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1509	#
1510	# Called when the user clicks on the record, stop or play buttons
1511	# for flow visualization.
1512	# ----------------------------------------------------------------------
1513	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1514	switch -- $option {
1515	movie {
1516	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1517	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1518	}
1519	set action [lindex $args 0]
1520	set op [lindex $args 1]
1521	if {$op == ""} { set op "on" }
1522
1523	set current [State $action]
1524	if {$op == "toggle"} {
1525	if {$current == "on"} {
1526	set op "off"
1527	} else {
1528	set op "on"
1529	}
1530	}
1531	set cmds ""
1532	switch -- $action {
1533	record {
1534	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1535	$itk_component(rewind) configure -relief sunken
1536	$itk_component(stop) configure -relief raised
1537	$itk_component(play) configure -relief raised
1538	set inner $itk_component(settingsFrame)
1539	set frames [$inner.framecnt value]
1540	set _settings(nsteps) $frames
1541	set cmds "flow capture $frames"
1542	SendCmd $cmds
1543	}
1544	}
1545	stop {
1546	if { [$itk_component(stop) cget -relief] != "sunken" } {
1547	$itk_component(rewind) configure -relief raised
1548	$itk_component(stop) configure -relief sunken
1549	$itk_component(play) configure -relief raised
1550	_pause
1551	set cmds "flow reset"
1552	SendCmd $cmds
1553	}
1554	}
1555	play {
1556	if { [$itk_component(play) cget -relief] != "sunken" } {
1557	$itk_component(rewind) configure -relief raised
1558	$itk_component(stop) configure -relief raised
1559	$itk_component(play) configure \
1560	-image [Rappture::icon flow-pause] \
1561	-relief sunken
1562	bind $itk_component(play) <ButtonPress> \
1563	[itcl::code $this _pause]
1564	flow next
1565	}
1566	}
1567	default {
1568	error "bad option \"$option\": should be one of record\|stop\|play"
1569	}
1570
1571	}
1572	}
1573	default {
1574	error "bad option \"$option\": should be movie"
1575	}
1576	}
1577	}
1578
1579	# ----------------------------------------------------------------------
1580	# USAGE: Play
1581	#
1582	# ----------------------------------------------------------------------
1583	itcl::body Rappture::FlowvisViewer::Play {} {
1584	SendCmd "flow next"
1585	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1586	$_dispatcher event -after $delay !play
1587	}
1588
1589	# ----------------------------------------------------------------------
1590	# USAGE: Pause
1591	#
1592	# Invoked when the user hits the "pause" button to stop playing the
1593	# current sequence of frames as a movie.
1594	# ----------------------------------------------------------------------
1595	itcl::body Rappture::FlowvisViewer::Pause {} {
1596	$_dispatcher cancel !play
1597
1598	# Toggle the button to "play" mode
1599	$itk_component(play) configure \
1600	-image [Rappture::icon flow-start] \
1601	-relief raised
1602	bind $itk_component(play) <ButtonPress> \
1603	[itcl::code $this Flow movie play toggle]
1604	}
1605
1606	# ----------------------------------------------------------------------
1607	# USAGE: InitSettings <what> ?<value>?
1608	#
1609	# Used internally to update rendering settings whenever parameters
1610	# change in the popup settings panel. Sends the new settings off
1611	# to the back end.
1612	# ----------------------------------------------------------------------
1613	itcl::body Rappture::FlowvisViewer::InitSettings { args } {
1614	foreach arg $args {
1615	AdjustSetting $arg
1616	}
1617	}
1618
1619	# ----------------------------------------------------------------------
1620	# USAGE: AdjustSetting <what> ?<value>?
1621	#
1622	# Used internally to update rendering settings whenever parameters
1623	# change in the popup settings panel. Sends the new settings off
1624	# to the back end.
1625	# ----------------------------------------------------------------------
1626	itcl::body Rappture::FlowvisViewer::AdjustSetting {what {value ""}} {
1627	switch -- $what {
1628	colormap {
1629	set color [$itk_component(colormap) value]
1630	set _settings(colormap) $color
1631	#ResetColormap $color
1632	}
1633	light {
1634	if { $_first != "" } {
1635	set comp [lindex [$_first components] 0]
1636	set tag $_first-$comp
1637	set diffuse [expr {0.01*$_settings($this-light)}]
1638	set ambient [expr {1.0 - $diffuse}]
1639	set specularLevel 0.3
1640	set specularExp 90.0
1641	SendCmd "$tag configure -ambient $ambient -diffuse $diffuse -specularLevel $specularLevel -specularExp $specularExp"
1642	}
1643	}
1644	light2side {
1645	if { $_first != "" } {
1646	set comp [lindex [$_first components] 0]
1647	set tag $_first-$comp
1648	set val $_settings($this-light2side)
1649	SendCmd "$tag configure -light2side $val"
1650	}
1651	}
1652	transp {
1653	if { $_first != "" } {
1654	set comp [lindex [$_first components] 0]
1655	set tag $_first-$comp
1656	set opacity [expr { 0.01 * double($_settings($this-transp)) }]
1657	SendCmd "$tag configure -opacity $opacity"
1658	}
1659	}
1660	opacity {
1661	if { $_first != "" && $_activeTf != "" } {
1662	set opacity [expr { 0.01 * double($_settings($this-opacity)) }]
1663	set tf $_activeTf
1664	set _settings($this-$tf-opacity) $opacity
1665	updatetransferfuncs
1666	}
1667	}
1668
1669	thickness {
1670	if { $_first != "" && $_activeTf != "" } {
1671	set val $_settings($this-thickness)
1672	# Scale values between 0.00001 and 0.01000
1673	set sval [expr {0.0001*double($val)}]
1674	set tf $_activeTf
1675	set _settings($this-$tf-thickness) $sval
1676	updatetransferfuncs
1677	}
1678	}
1679	"outline" {
1680	if { $_first != "" } {
1681	set comp [lindex [$_first components] 0]
1682	set tag $_first-$comp
1683	SendCmd "$tag configure -outline $_settings($this-outline)"
1684	}
1685	}
1686	"isosurface" {
1687	if { [isconnected] } {
1688	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1689	}
1690	}
1691	"grid" {
1692	if { [isconnected] } {
1693	SendCmd "grid visible $_settings($this-grid)"
1694	}
1695	}
1696	"axes" {
1697	if { [isconnected] } {
1698	SendCmd "axis visible $_settings($this-axes)"
1699	}
1700	}
1701	"legend" {
1702	if { $_settings($this-legend) } {
1703	blt::table $itk_component(plotarea) \
1704	0,0 $itk_component(3dview) -fill both \
1705	1,0 $itk_component(legend) -fill x
1706	blt::table configure $itk_component(plotarea) r1 -resize none
1707	} else {
1708	blt::table forget $itk_component(legend)
1709	}
1710	}
1711	"volume" {
1712	if { $_first != "" } {
1713	set comp [lindex [$_first components] 0]
1714	set tag $_first-$comp
1715	SendCmd "$tag configure -volume $_settings($this-volume)"
1716	}
1717	}
1718	"xcutplane" - "ycutplane" - "zcutplane" {
1719	set axis [string range $what 0 0]
1720	set bool $_settings($this-$what)
1721	if { [isconnected] } {
1722	set vols [CurrentVolumeIds -cutplanes]
1723	SendCmd "cutplane state $bool $axis $vols"
1724	}
1725	if { $bool } {
1726	$itk_component(${axis}CutScale) configure -state normal \
1727	-troughcolor white
1728	} else {
1729	$itk_component(${axis}CutScale) configure -state disabled \
1730	-troughcolor grey82
1731	}
1732	}
1733	default {
1734	error "don't know how to fix $what"
1735	}
1736	}
1737	}
1738
1739	# ----------------------------------------------------------------------
1740	# USAGE: ResizeLegend
1741	#
1742	# Used internally to update the legend area whenever it changes size
1743	# or when the field changes. Asks the server to send a new legend
1744	# for the current field.
1745	# ----------------------------------------------------------------------
1746	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1747	set _resizeLegendPending 0
1748	set lineht [font metrics $itk_option(-font) -linespace]
1749	set w [expr {$_width-20}]
1750	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1751
1752	if { $_first == "" } {
1753	return
1754	}
1755	set comp [lindex [$_first components] 0]
1756	set tag $_first-$comp
1757	#set _activeTf [lindex $_obj2style($tag) 0]
1758	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1759	#SendCmd "legend $_activeTf $w $h"
1760	SendCmd "$tag legend $w $h"
1761	} else {
1762	# Can't do this as this will remove the items associated with the
1763	# isomarkers.
1764
1765	#$itk_component(legend) delete all
1766	}
1767	}
1768
1769	#
1770	# NameTransferFunc --
1771	#
1772	# Creates a transfer function name based on the <style> settings in the
1773	# library run.xml file. This placeholder will be used later to create
1774	# and send the actual transfer function once the data info has been sent
1775	# to us by the render server. [We won't know the volume limits until the
1776	# server parses the 3D data and sends back the limits via ReceiveData.]
1777	#
1778	# FIXME: The current way we generate transfer-function names completely
1779	# ignores the -markers option. The problem is that we are forced
1780	# to compute the name from an increasing complex set of values:
1781	# color, levels, marker, opacity. I think we're stuck doing it
1782	# now.
1783	#
1784	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1785	array set style {
1786	-color BCGYR
1787	-levels 6
1788	-opacity 1.0
1789	-light 40
1790	-transp 50
1791	}
1792	array set style [lindex [$dataobj components -style $comp] 0]
1793	set _settings($this-light) $style(-light)
1794	set _settings($this-transp) $style(-transp)
1795	set _settings($this-opacity) [expr $style(-opacity) * 100]
1796	set tf "$style(-color):$style(-levels):$style(-opacity)"
1797	set _obj2style($dataobj-$comp) $tf
1798	lappend _style2objs($tf) $dataobj $comp
1799	return $tf
1800	}
1801
1802	#
1803	# ComputeTransferFunc --
1804	#
1805	# Computes and sends the transfer function to the render server. It's
1806	# assumed that the volume data limits are known and that the global
1807	# transfer-functions slider values have be setup. Both parts are
1808	# needed to compute the relative value (location) of the marker, and
1809	# the alpha map of the transfer function.
1810	#
1811	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1812	array set style {
1813	-color BCGYR
1814	-levels 6
1815	-opacity 1.0
1816	-light 40
1817	-transp 50
1818	}
1819	set dataobj ""; set comp ""
1820	foreach {dataobj comp} $_style2objs($tf) break
1821	if { $dataobj == "" } {
1822	return 0
1823	}
1824	array set style [lindex [$dataobj components -style $comp] 0]
1825
1826
1827	# We have to parse the style attributes for a volume using this
1828	# transfer-function once. This sets up the initial isomarkers for the
1829	# transfer function. The user may add/delete markers, so we have to
1830	# maintain a list of markers for each transfer-function. We use the one
1831	# of the volumes (the first in the list) using the transfer-function as a
1832	# reference.
1833	#
1834	# FIXME: The current way we generate transfer-function names completely
1835	# ignores the -markers option. The problem is that we are forced
1836	# to compute the name from an increasing complex set of values:
1837	# color, levels, marker, opacity. I think the cow's out of the
1838	# barn on this one.
1839
1840	if { ![info exists _isomarkers($tf)] } {
1841	# Have to defer creation of isomarkers until we have data limits
1842	if { [info exists style(-markers)] &&
1843	[llength $style(-markers)] > 0 } {
1844	ParseMarkersOption $tf $style(-markers)
1845	} else {
1846	ParseLevelsOption $tf $style(-levels)
1847	}
1848	}
1849	if { [info exists style(-nonuniformcolors)] } {
1850	foreach { value color } $style(-nonuniformcolors) {
1851	append cmap "$value [Color2RGB $color] "
1852	}
1853	} else {
1854	set cmap [ColorsToColormap $style(-color)]
1855	}
1856	set tag $this-$tf
1857	if { ![info exists _settings($tag-opacity)] } {
1858	set _settings($tag-opacity) $style(-opacity)
1859	}
1860	set max 1.0 ;#$_settings($tag-opacity)
1861
1862	set isovalues {}
1863	foreach m $_isomarkers($tf) {
1864	lappend isovalues [$m relval]
1865	}
1866	# Sort the isovalues
1867	set isovalues [lsort -real $isovalues]
1868
1869	if { ![info exists _settings($tag-thickness)]} {
1870	set _settings($tag-thickness) 0.005
1871	}
1872	set delta $_settings($tag-thickness)
1873
1874	set first [lindex $isovalues 0]
1875	set last [lindex $isovalues end]
1876	set wmap ""
1877	if { $first == "" \|\| $first != 0.0 } {
1878	lappend wmap 0.0 0.0
1879	}
1880	foreach x $isovalues {
1881	set x1 [expr {$x-$delta-0.00001}]
1882	set x2 [expr {$x-$delta}]
1883	set x3 [expr {$x+$delta}]
1884	set x4 [expr {$x+$delta+0.00001}]
1885	if { $x1 < 0.0 } {
1886	set x1 0.0
1887	} elseif { $x1 > 1.0 } {
1888	set x1 1.0
1889	}
1890	if { $x2 < 0.0 } {
1891	set x2 0.0
1892	} elseif { $x2 > 1.0 } {
1893	set x2 1.0
1894	}
1895	if { $x3 < 0.0 } {
1896	set x3 0.0
1897	} elseif { $x3 > 1.0 } {
1898	set x3 1.0
1899	}
1900	if { $x4 < 0.0 } {
1901	set x4 0.0
1902	} elseif { $x4 > 1.0 } {
1903	set x4 1.0
1904	}
1905	# add spikes in the middle
1906	lappend wmap $x1 0.0
1907	lappend wmap $x2 $max
1908	lappend wmap $x3 $max
1909	lappend wmap $x4 0.0
1910	}
1911	if { $last == "" \|\| $last != 1.0 } {
1912	lappend wmap 1.0 0.0
1913	}
1914	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1915	return [SendCmd "$dataobj-$comp configure -transferfunction $tf"]
1916	}
1917
1918	# ----------------------------------------------------------------------
1919	# CONFIGURATION OPTION: -plotbackground
1920	# ----------------------------------------------------------------------
1921	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1922	if { [isconnected] } {
1923	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1924	#fix this!
1925	#SendCmd "color background $r $g $b"
1926	}
1927	}
1928
1929	# ----------------------------------------------------------------------
1930	# CONFIGURATION OPTION: -plotforeground
1931	# ----------------------------------------------------------------------
1932	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1933	if { [isconnected] } {
1934	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1935	#fix this!
1936	#SendCmd "color background $r $g $b"
1937	}
1938	}
1939
1940	# ----------------------------------------------------------------------
1941	# CONFIGURATION OPTION: -plotoutline
1942	# ----------------------------------------------------------------------
1943	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1944	# Must check if we are connected because this routine is called from the
1945	# class body when the -plotoutline itk_option is defined. At that point
1946	# the FlowvisViewer class constructor hasn't been called, so we can't
1947	# start sending commands to visualization server.
1948	if { [isconnected] } {
1949	if {"" == $itk_option(-plotoutline)} {
1950	SendCmd "volume outline state off"
1951	} else {
1952	SendCmd "volume outline state on"
1953	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1954	}
1955	}
1956	}
1957
1958	#
1959	# The -levels option takes a single value that represents the number
1960	# of evenly distributed markers based on the current data range. Each
1961	# marker is a relative value from 0.0 to 1.0.
1962	#
1963	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1964	set c $itk_component(legend)
1965	regsub -all "," $levels " " levels
1966	if {[string is int $levels]} {
1967	for {set i 1} { $i <= $levels } {incr i} {
1968	set x [expr {double($i)/($levels+1)}]
1969	set m [Rappture::IsoMarker \#auto $c $this $tf]
1970	$m relval $x
1971	lappend _isomarkers($tf) $m
1972	}
1973	} else {
1974	foreach x $levels {
1975	set m [Rappture::IsoMarker \#auto $c $this $tf]
1976	$m relval $x
1977	lappend _isomarkers($tf) $m
1978	}
1979	}
1980	}
1981
1982	#
1983	# The -markers option takes a list of zero or more values (the values
1984	# may be separated either by spaces or commas) that have the following
1985	# format:
1986	#
1987	# N% Percent of current total data range. Converted to
1988	# to a relative value between 0.0 and 1.0.
1989	# N Absolute value of marker. If the marker is outside of
1990	# the current range, it will be displayed on the outer
1991	# edge of the legends, but it range it represents will
1992	# not be seen.
1993	#
1994	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1995	set c $itk_component(legend)
1996	regsub -all "," $markers " " markers
1997	foreach marker $markers {
1998	set n [scan $marker "%g%s" value suffix]
1999	if { $n == 2 && $suffix == "%" } {
2000	# ${n}% : Set relative value.
2001	set value [expr {$value * 0.01}]
2002	set m [Rappture::IsoMarker \#auto $c $this $tf]
2003	$m relval $value
2004	lappend _isomarkers($tf) $m
2005	} else {
2006	# ${n} : Set absolute value.
2007	set m [Rappture::IsoMarker \#auto $c $this $tf]
2008	$m absval $value
2009	lappend _isomarkers($tf) $m
2010	}
2011	}
2012	}
2013
2014	# ----------------------------------------------------------------------
2015	# USAGE: UndateTransferFuncs
2016	# ----------------------------------------------------------------------
2017	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
2018	$_dispatcher event -after 100 !send_transfunc
2019	}
2020
2021	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
2022	if { $_activeTf == "" } {
2023	error "active transfer function isn't set"
2024	}
2025	set tf $_activeTf
2026	set c $itk_component(legend)
2027	set m [Rappture::IsoMarker \#auto $c $this $tf]
2028	set w [winfo width $c]
2029	$m relval [expr {double($x-10)/($w-20)}]
2030	lappend _isomarkers($tf) $m
2031	updatetransferfuncs
2032	return 1
2033	}
2034
2035	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
2036	set tf [$marker transferfunc]
2037	set bool 0
2038	if { [info exists _isomarkers($tf)] } {
2039	set list {}
2040	set marker [namespace tail $marker]
2041	foreach m $_isomarkers($tf) {
2042	set sx [$m screenpos]
2043	if { $m != $marker } {
2044	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2045	$marker relval [$m relval]
2046	itcl::delete object $m
2047	bell
2048	set bool 1
2049	continue
2050	}
2051	}
2052	lappend list $m
2053	}
2054	set _isomarkers($tf) $list
2055	updatetransferfuncs
2056	}
2057	return $bool
2058	}
2059
2060	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2061	set tf [$marker transferfunc]
2062	if { [info exists _isomarkers($tf)] } {
2063	set marker [namespace tail $marker]
2064	foreach m $_isomarkers($tf) {
2065	set sx [$m screenpos]
2066	if { $m != $marker } {
2067	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2068	$m activate $bool
2069	}
2070	}
2071	}
2072	return ""
2073	}
2074
2075	itcl::body Rappture::FlowvisViewer::limits { tf } {
2076	set _limits(vmin) 0.0
2077	set _limits(vmax) 1.0
2078	if { ![info exists _style2objs($tf)] } {
2079	puts stderr "no style2objs for $tf tf=($tf)"
2080	return [array get _limits]
2081	}
2082	set min ""; set max ""
2083	foreach {dataobj comp} $_style2objs($tf) {
2084	set tag $dataobj-$comp
2085	if { ![info exists _serverObjs($tag)] } {
2086	puts stderr "$tag not in serverObjs?"
2087	continue
2088	}
2089	if { ![info exists _limits($tag-min)] } {
2090	puts stderr "$tag no min?"
2091	continue
2092	}
2093	if { $min == "" \|\| $min > $_limits($tag-min) } {
2094	set min $_limits($tag-min)
2095	}
2096	if { $max == "" \|\| $max < $_limits($tag-max) } {
2097	set max $_limits($tag-max)
2098	}
2099	}
2100	if { $min != "" } {
2101	set _limits(vmin) $min
2102	}
2103	if { $max != "" } {
2104	set _limits(vmax) $max
2105	}
2106	return [array get _limits]
2107	}
2108
2109	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2110	foreach { key value } {
2111	grid 0
2112	axes 0
2113	outline 1
2114	volume 1
2115	legend 1
2116	particles 1
2117	lic 1
2118	} {
2119	set _settings($this-$key) $value
2120	}
2121
2122	set fg [option get $itk_component(hull) font Font]
2123	#set bfg [option get $itk_component(hull) boldFont Font]
2124
2125	set inner [$itk_component(main) insert end \
2126	-title "View Settings" \
2127	-icon [Rappture::icon wrench]]
2128	$inner configure -borderwidth 4
2129
2130	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2131	checkbutton $inner.isosurface \
2132	-text "Isosurface shading" \
2133	-variable [itcl::scope _settings($this-isosurface)] \
2134	-command [itcl::code $this AdjustSetting isosurface] \
2135	-font "Arial 9"
2136
2137	checkbutton $inner.axes \
2138	-text "Axes" \
2139	-variable [itcl::scope _settings($this-axes)] \
2140	-command [itcl::code $this AdjustSetting axes] \
2141	-font "Arial 9"
2142
2143	checkbutton $inner.grid \
2144	-text "Grid" \
2145	-variable [itcl::scope _settings($this-grid)] \
2146	-command [itcl::code $this AdjustSetting grid] \
2147	-font "Arial 9"
2148
2149	checkbutton $inner.outline \
2150	-text "Outline" \
2151	-variable [itcl::scope _settings($this-outline)] \
2152	-command [itcl::code $this AdjustSetting outline] \
2153	-font "Arial 9"
2154
2155	checkbutton $inner.legend \
2156	-text "Legend" \
2157	-variable [itcl::scope _settings($this-legend)] \
2158	-command [itcl::code $this AdjustSetting legend] \
2159	-font "Arial 9"
2160
2161	checkbutton $inner.volume \
2162	-text "Volume" \
2163	-variable [itcl::scope _settings($this-volume)] \
2164	-command [itcl::code $this AdjustSetting volume] \
2165	-font "Arial 9"
2166
2167	checkbutton $inner.particles \
2168	-text "Particles" \
2169	-variable [itcl::scope _settings($this-particles)] \
2170	-command [itcl::code $this AdjustSetting particles] \
2171	-font "Arial 9"
2172
2173	checkbutton $inner.lic \
2174	-text "Lic" \
2175	-variable [itcl::scope _settings($this-lic)] \
2176	-command [itcl::code $this AdjustSetting lic] \
2177	-font "Arial 9"
2178
2179	frame $inner.frame
2180
2181	blt::table $inner \
2182	0,0 $inner.axes -cspan 2 -anchor w \
2183	1,0 $inner.grid -cspan 2 -anchor w \
2184	2,0 $inner.outline -cspan 2 -anchor w \
2185	3,0 $inner.volume -cspan 2 -anchor w \
2186	4,0 $inner.legend -cspan 2 -anchor w
2187
2188	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2189
2190	blt::table configure $inner r* -resize none
2191	blt::table configure $inner r5 -resize expand
2192	}
2193
2194	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2195	foreach { key value } {
2196	light2side 0
2197	light 40
2198	transp 50
2199	opacity 100
2200	thickness 350
2201	} {
2202	set _settings($this-$key) $value
2203	}
2204
2205	set inner [$itk_component(main) insert end \
2206	-title "Volume Settings" \
2207	-icon [Rappture::icon volume-on]]
2208	$inner configure -borderwidth 4
2209
2210	set fg [option get $itk_component(hull) font Font]
2211	#set bfg [option get $itk_component(hull) boldFont Font]
2212
2213	checkbutton $inner.vol -text "Show volume" -font $fg \
2214	-text "Volume" \
2215	-variable [itcl::scope _settings($this-volume)] \
2216	-command [itcl::code $this AdjustSetting volume] \
2217	-font "Arial 9"
2218
2219	label $inner.shading -text "Shading:" -font $fg
2220
2221	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
2222	-variable [itcl::scope _settings($this-light2side)] \
2223	-command [itcl::code $this AdjustSetting light2side]
2224
2225	label $inner.dim -text "Glow" -font $fg
2226	::scale $inner.light -from 0 -to 100 -orient horizontal \
2227	-variable [itcl::scope _settings($this-light)] \
2228	-width 10 \
2229	-showvalue off -command [itcl::code $this AdjustSetting light]
2230	label $inner.bright -text "Surface" -font $fg
2231
2232	label $inner.fog -text "Clear" -font $fg
2233	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2234	-variable [itcl::scope _settings($this-transp)] \
2235	-width 10 \
2236	-showvalue off -command [itcl::code $this AdjustSetting transp]
2237	label $inner.plastic -text "Opaque" -font $fg
2238
2239	label $inner.clear -text "Clear" -font $fg
2240	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2241	-variable [itcl::scope _settings($this-opacity)] \
2242	-width 10 \
2243	-showvalue off -command [itcl::code $this AdjustSetting opacity]
2244	label $inner.opaque -text "Opaque" -font $fg
2245
2246	label $inner.thin -text "Thin" -font $fg
2247	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2248	-variable [itcl::scope _settings($this-thickness)] \
2249	-width 10 \
2250	-showvalue off -command [itcl::code $this AdjustSetting thickness]
2251	label $inner.thick -text "Thick" -font $fg
2252
2253	label $inner.colormap_l -text "Colormap" -font "Arial 9"
2254	itk_component add colormap {
2255	Rappture::Combobox $inner.colormap -width 10 -editable no
2256	}
2257
2258	$inner.colormap choices insert end \
2259	"BCGYR" "BCGYR" \
2260	"BGYOR" "BGYOR" \
2261	"blue" "blue" \
2262	"blue-to-brown" "blue-to-brown" \
2263	"blue-to-orange" "blue-to-orange" \
2264	"blue-to-grey" "blue-to-grey" \
2265	"green-to-magenta" "green-to-magenta" \
2266	"greyscale" "greyscale" \
2267	"nanohub" "nanohub" \
2268	"rainbow" "rainbow" \
2269	"spectral" "spectral" \
2270	"ROYGB" "ROYGB" \
2271	"RYGCB" "RYGCB" \
2272	"brown-to-blue" "brown-to-blue" \
2273	"grey-to-blue" "grey-to-blue" \
2274	"orange-to-blue" "orange-to-blue" \
2275	"none" "none"
2276
2277	$itk_component(colormap) value "BCGYR"
2278	bind $inner.colormap <<Value>> \
2279	[itcl::code $this AdjustSetting colormap]
2280
2281	blt::table $inner \
2282	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
2283	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
2284	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
2285	3,0 $inner.dim -anchor e -pady 2 \
2286	3,1 $inner.light -cspan 2 -pady 2 -fill x \
2287	3,3 $inner.bright -anchor w -pady 2 \
2288	4,0 $inner.fog -anchor e -pady 2 \
2289	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
2290	4,3 $inner.plastic -anchor w -pady 2 \
2291	5,0 $inner.thin -anchor e -pady 2 \
2292	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
2293	5,3 $inner.thick -anchor w -pady 2
2294
2295	blt::table configure $inner c0 c1 c3 r* -resize none
2296	blt::table configure $inner r6 -resize expand
2297	}
2298
2299	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2300	set inner [$itk_component(main) insert end \
2301	-title "Cutplane Settings" \
2302	-icon [Rappture::icon cutbutton]]
2303	$inner configure -borderwidth 4
2304
2305	# X-value slicer...
2306	itk_component add xCutButton {
2307	Rappture::PushButton $inner.xbutton \
2308	-onimage [Rappture::icon x-cutplane] \
2309	-offimage [Rappture::icon x-cutplane] \
2310	-command [itcl::code $this AdjustSetting xcutplane] \
2311	-variable [itcl::scope _settings($this-xcutplane)]
2312	}
2313	Rappture::Tooltip::for $itk_component(xCutButton) \
2314	"Toggle the X cut plane on/off"
2315
2316	itk_component add xCutScale {
2317	::scale $inner.xval -from 100 -to 0 \
2318	-width 10 -orient vertical -showvalue off \
2319	-borderwidth 1 -highlightthickness 0 \
2320	-command [itcl::code $this Slice move x] \
2321	-variable [itcl::scope _settings($this-xcutposition)]
2322	} {
2323	usual
2324	ignore -borderwidth -highlightthickness
2325	}
2326	# Set the default cutplane value before disabling the scale.
2327	$itk_component(xCutScale) set 50
2328	$itk_component(xCutScale) configure -state disabled
2329	Rappture::Tooltip::for $itk_component(xCutScale) \
2330	"@[itcl::code $this SlicerTip x]"
2331
2332	# Y-value slicer...
2333	itk_component add yCutButton {
2334	Rappture::PushButton $inner.ybutton \
2335	-onimage [Rappture::icon y-cutplane] \
2336	-offimage [Rappture::icon y-cutplane] \
2337	-command [itcl::code $this AdjustSetting ycutplane] \
2338	-variable [itcl::scope _settings($this-ycutplane)]
2339	}
2340	Rappture::Tooltip::for $itk_component(yCutButton) \
2341	"Toggle the Y cut plane on/off"
2342
2343	itk_component add yCutScale {
2344	::scale $inner.yval -from 100 -to 0 \
2345	-width 10 -orient vertical -showvalue off \
2346	-borderwidth 1 -highlightthickness 0 \
2347	-command [itcl::code $this Slice move y] \
2348	-variable [itcl::scope _settings($this-ycutposition)]
2349	} {
2350	usual
2351	ignore -borderwidth -highlightthickness
2352	}
2353	Rappture::Tooltip::for $itk_component(yCutScale) \
2354	"@[itcl::code $this SlicerTip y]"
2355	# Set the default cutplane value before disabling the scale.
2356	$itk_component(yCutScale) set 50
2357	$itk_component(yCutScale) configure -state disabled
2358
2359	# Z-value slicer...
2360	itk_component add zCutButton {
2361	Rappture::PushButton $inner.zbutton \
2362	-onimage [Rappture::icon z-cutplane] \
2363	-offimage [Rappture::icon z-cutplane] \
2364	-command [itcl::code $this AdjustSetting zcutplane] \
2365	-variable [itcl::scope _settings($this-zcutplane)]
2366	}
2367	Rappture::Tooltip::for $itk_component(zCutButton) \
2368	"Toggle the Z cut plane on/off"
2369
2370	itk_component add zCutScale {
2371	::scale $inner.zval -from 100 -to 0 \
2372	-width 10 -orient vertical -showvalue off \
2373	-borderwidth 1 -highlightthickness 0 \
2374	-command [itcl::code $this Slice move z] \
2375	-variable [itcl::scope _settings($this-zcutposition)]
2376	} {
2377	usual
2378	ignore -borderwidth -highlightthickness
2379	}
2380	$itk_component(zCutScale) set 50
2381	$itk_component(zCutScale) configure -state disabled
2382	#$itk_component(zCutScale) configure -state disabled
2383	Rappture::Tooltip::for $itk_component(zCutScale) \
2384	"@[itcl::code $this SlicerTip z]"
2385
2386	blt::table $inner \
2387	1,1 $itk_component(xCutButton) \
2388	1,2 $itk_component(yCutButton) \
2389	1,3 $itk_component(zCutButton) \
2390	0,1 $itk_component(xCutScale) \
2391	0,2 $itk_component(yCutScale) \
2392	0,3 $itk_component(zCutScale) \
2393
2394	blt::table configure $inner r0 r1 c* -resize none
2395	blt::table configure $inner r2 c4 -resize expand
2396	blt::table configure $inner c0 -width 2
2397	blt::table configure $inner c1 c2 c3 -padx 2
2398	}
2399
2400	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2401	set inner [$itk_component(main) insert end \
2402	-title "Camera Settings" \
2403	-icon [Rappture::icon camera]]
2404	$inner configure -borderwidth 4
2405
2406	set row 0
2407	label $inner.orientation_l -text "View" -font "Arial 9"
2408	itk_component add orientation {
2409	Rappture::Combobox $inner.orientation -width 10 -editable no
2410	}
2411	$inner.orientation choices insert end \
2412	"1 0 0 0" "front" \
2413	"0 0 1 0" "back" \
2414	"0.707107 -0.707107 0 0" "top" \
2415	"0.707107 0.707107 0 0" "bottom" \
2416	"0.707107 0 -0.707107 0" "left" \
2417	"0.707107 0 0.707107 0" "right" \
2418	"0.853553 -0.353553 0.353553 0.146447" "default"
2419	$itk_component(orientation) value "default"
2420	bind $inner.orientation <<Value>> [itcl::code $this SetOrientation]
2421	if 1 {
2422	blt::table $inner \
2423	$row,0 $inner.orientation_l -anchor e -pady 2 \
2424	$row,1 $inner.orientation -anchor w -pady 2 -fill x
2425	blt::table configure $inner r$row -resize none
2426	incr row
2427	}
2428
2429	set labels { qw qx qy qz pan-x pan-y zoom }
2430	foreach tag $labels {
2431	label $inner.${tag}label -text $tag -font "Arial 9"
2432	entry $inner.${tag} -font "Arial 9" -bg white \
2433	-textvariable [itcl::scope _settings($this-$tag)]
2434	bind $inner.${tag} <KeyPress-Return> \
2435	[itcl::code $this camera set ${tag}]
2436	blt::table $inner \
2437	$row,0 $inner.${tag}label -anchor e -pady 2 \
2438	$row,1 $inner.${tag} -anchor w -pady 2
2439	blt::table configure $inner r$row -resize none
2440	incr row
2441	}
2442	blt::table configure $inner c0 c1 -resize none
2443	blt::table configure $inner c2 -resize expand
2444	blt::table configure $inner r$row -resize expand
2445	}
2446
2447	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2448	set flowobj ""
2449	foreach key [array names _obj2flow] {
2450	set flowobj $_obj2flow($key)
2451	break
2452	}
2453	if { $flowobj == "" } {
2454	return
2455	}
2456	if { [winfo exists $w.frame] } {
2457	destroy $w.frame
2458	}
2459	set inner [frame $w.frame]
2460	blt::table $w \
2461	5,0 $inner -fill both -cspan 2 -anchor nw
2462	array set hints [$flowobj hints]
2463	checkbutton $inner.showstreams -text "Streams Plane" \
2464	-variable [itcl::scope _settings($this-streams)] \
2465	-command [itcl::code $this streams $key $hints(name)] \
2466	-font "Arial 9"
2467	Rappture::Tooltip::for $inner.showstreams $hints(description)
2468
2469	checkbutton $inner.showarrows -text "Arrows" \
2470	-variable [itcl::scope _settings($this-arrows)] \
2471	-command [itcl::code $this arrows $key $hints(name)] \
2472	-font "Arial 9"
2473
2474	label $inner.particles -text "Particles" -font "Arial 9 bold"
2475	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2476
2477	blt::table $inner \
2478	1,0 $inner.showstreams -anchor w \
2479	2,0 $inner.showarrows -anchor w
2480	blt::table configure $inner c0 c1 -resize none
2481	blt::table configure $inner c2 -resize expand
2482
2483	set row 3
2484	set particles [$flowobj particles]
2485	if { [llength $particles] > 0 } {
2486	blt::table $inner $row,0 $inner.particles -anchor w
2487	incr row
2488	}
2489	foreach part $particles {
2490	array unset info
2491	array set info $part
2492	set name $info(name)
2493	if { ![info exists _settings($this-particles-$name)] } {
2494	set _settings($this-particles-$name) $info(hide)
2495	}
2496	checkbutton $inner.part$row -text $info(label) \
2497	-variable [itcl::scope _settings($this-particles-$name)] \
2498	-onvalue 0 -offvalue 1 \
2499	-command [itcl::code $this particles $key $name] \
2500	-font "Arial 9"
2501	Rappture::Tooltip::for $inner.part$row $info(description)
2502	blt::table $inner $row,0 $inner.part$row -anchor w
2503	if { !$_settings($this-particles-$name) } {
2504	$inner.part$row select
2505	}
2506	incr row
2507	}
2508	set boxes [$flowobj boxes]
2509	if { [llength $boxes] > 0 } {
2510	blt::table $inner $row,0 $inner.boxes -anchor w
2511	incr row
2512	}
2513	foreach box $boxes {
2514	array unset info
2515	array set info $box
2516	set name $info(name)
2517	if { ![info exists _settings($this-box-$name)] } {
2518	set _settings($this-box-$name) $info(hide)
2519	}
2520	checkbutton $inner.box$row -text $info(label) \
2521	-variable [itcl::scope _settings($this-box-$name)] \
2522	-onvalue 0 -offvalue 1 \
2523	-command [itcl::code $this box $key $name] \
2524	-font "Arial 9"
2525	Rappture::Tooltip::for $inner.box$row $info(description)
2526	blt::table $inner $row,0 $inner.box$row -anchor w
2527	if { !$_settings($this-box-$name) } {
2528	$inner.box$row select
2529	}
2530	incr row
2531	}
2532	blt::table configure $inner r* -resize none
2533	blt::table configure $inner r$row -resize expand
2534	blt::table configure $inner c3 -resize expand
2535	event generate [winfo parent [winfo parent $w]] <Configure>
2536	}
2537
2538	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2539	set bool $_settings($this-particles-$name)
2540	SendCmd "$tag particles configure {$name} -hide $bool"
2541	}
2542
2543	itcl::body Rappture::FlowvisViewer::box { tag name } {
2544	set bool $_settings($this-box-$name)
2545	SendCmd "$tag box configure {$name} -hide $bool"
2546	}
2547
2548	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2549	set bool $_settings($this-streams)
2550	SendCmd "$tag configure -slice $bool"
2551	}
2552
2553	itcl::body Rappture::FlowvisViewer::arrows { tag name } {
2554	set bool $_settings($this-arrows)
2555	SendCmd "$tag configure -arrows $bool"
2556	}
2557
2558	# ----------------------------------------------------------------------
2559	# USAGE: Slice move x\|y\|z <newval>
2560	#
2561	# Called automatically when the user drags the slider to move the
2562	# cut plane that slices 3D data. Gets the current value from the
2563	# slider and moves the cut plane to the appropriate point in the
2564	# data set.
2565	# ----------------------------------------------------------------------
2566	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2567	switch -- $option {
2568	move {
2569	if {[llength $args] != 2} {
2570	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2571	}
2572	set axis [lindex $args 0]
2573	set newval [lindex $args 1]
2574	set newpos [expr {0.01*$newval}]
2575
2576	# show the current value in the readout
2577
2578	set ids [CurrentVolumeIds -cutplanes]
2579	SendCmd "cutplane position $newpos $axis $ids"
2580	}
2581	default {
2582	error "bad option \"$option\": should be axis, move, or volume"
2583	}
2584	}
2585	}
2586
2587	# ----------------------------------------------------------------------
2588	# USAGE: SlicerTip <axis>
2589	#
2590	# Used internally to generate a tooltip for the x/y/z slicer controls.
2591	# Returns a message that includes the current slicer value.
2592	# ----------------------------------------------------------------------
2593	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2594	set val [$itk_component(${axis}CutScale) get]
2595	# set val [expr {0.01*($val-50)
2596	# *($_limits(${axis}max)-$_limits(${axis}min))
2597	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2598	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2599	}
2600
2601	itcl::body Rappture::FlowvisViewer::Resize {} {
2602	$_arcball resize $_width $_height
2603	SendCmd "screen size $_width $_height"
2604	set _resizePending 0
2605	}
2606
2607	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2608	set _width $w
2609	set _height $h
2610	$_arcball resize $w $h
2611	if { !$_resizePending } {
2612	$_dispatcher event -after 200 !resize
2613	set _resizePending 1
2614	}
2615	}
2616
2617	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2618	if { !$_resizeLegendPending } {
2619	$_dispatcher event -after 100 !legend
2620	set _resizeLegendPending 1
2621	}
2622	}
2623
2624	itcl::body Rappture::FlowvisViewer::EventuallyGoto { nSteps } {
2625	set _flow(goto) $nSteps
2626	if { !$_gotoPending } {
2627	$_dispatcher event -after 1000 !goto
2628	set _gotoPending 1
2629	}
2630	}
2631
2632	# camera --
2633	itcl::body Rappture::FlowvisViewer::camera {option args} {
2634	switch -- $option {
2635	"show" {
2636	puts [array get _view]
2637	}
2638	"set" {
2639	set who [lindex $args 0]
2640	set x $_settings($this-$who)
2641	set code [catch { string is double $x } result]
2642	if { $code != 0 \|\| !$result } {
2643	set _settings($this-$who) $_view($who)
2644	return
2645	}
2646	switch -- $who {
2647	"pan-x" - "pan-y" {
2648	set _view($who) $_settings($this-$who)
2649	PanCamera
2650	}
2651	"qx" - "qy" - "qz" - "qw" {
2652	set _view($who) $_settings($this-$who)
2653	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2654	$_arcball quaternion $q
2655	SendCmd "camera orient $q"
2656	}
2657	"zoom" {
2658	set _view($who) $_settings($this-$who)
2659	SendCmd "camera zoom $_view(zoom)"
2660	}
2661	}
2662	}
2663	}
2664	}
2665
2666	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2667	set tag "$dataobj-$comp"
2668	if { ![info exists _obj2flow($tag)] } {
2669	append cmd "flow add $tag\n"
2670	append cmd "$tag data follows $nbytes $extents\n"
2671	return $cmd
2672	}
2673	set flowobj $_obj2flow($tag)
2674	if { $flowobj == "" } {
2675	puts stderr "no flowobj"
2676	return ""
2677	}
2678	set cmd {}
2679	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2680	array set info [$flowobj hints]
2681	set _settings($this-volume) $info(volume)
2682	set _settings($this-outline) $info(outline)
2683	set _settings($this-arrows) $info(arrows)
2684	set _settings($this-duration) $info(duration)
2685	$itk_component(speed) value $info(speed)
2686	append cmd "flow add $tag"
2687	append cmd " -position $info(position)"
2688	append cmd " -axis $info(axis)"
2689	append cmd " -volume $info(volume)"
2690	append cmd " -outline $info(outline)"
2691	append cmd " -slice $info(streams)"
2692	append cmd " -arrows $info(arrows)\n"
2693	foreach part [$flowobj particles] {
2694	array unset info
2695	array set info $part
2696	set color [Color2RGB $info(color)]
2697	append cmd "$tag particles add $info(name)"
2698	append cmd " -position $info(position)"
2699	append cmd " -hide $info(hide)"
2700	append cmd " -axis $info(axis)"
2701	append cmd " -color {$color}"
2702	append cmd " -size $info(size)\n"
2703	}
2704	foreach box [$flowobj boxes] {
2705	array unset info
2706	set info(corner1) ""
2707	set info(corner2) ""
2708	array set info $box
2709	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2710	continue
2711	}
2712	set color [Color2RGB $info(color)]
2713	append cmd "$tag box add $info(name)"
2714	append cmd " -color {$color}"
2715	append cmd " -hide $info(hide)"
2716	append cmd " -linewidth $info(linewidth) "
2717	append cmd " -corner1 {$info(corner1)} "
2718	append cmd " -corner2 {$info(corner2)}\n"
2719	}
2720	append cmd "$tag data follows $nbytes $extents\n"
2721	return $cmd
2722	}
2723
2724
2725	#
2726	# flow --
2727	#
2728	# Called when the user clicks on the stop or play buttons
2729	# for flow visualization.
2730	#
2731	# $this flow play
2732	# $this flow stop
2733	# $this flow toggle
2734	# $this flow reset
2735	# $this flow pause
2736	# $this flow next
2737	#
2738	itcl::body Rappture::FlowvisViewer::flow { args } {
2739	set option [lindex $args 0]
2740	switch -- $option {
2741	"goto2" {
2742	puts stderr "actually sending \"flow goto $_flow(goto)\""
2743	SendCmd "flow goto $_flow(goto)"
2744	set _gotoPending 0
2745	}
2746	"goto" {
2747	puts stderr "flow goto to $_settings($this-currenttime)"
2748	# Figure out how many steps to the current time based upon
2749	# the speed and duration.
2750	set current $_settings($this-currenttime)
2751	set speed [$itk_component(speed) value]
2752	set time [str2millisecs $_settings($this-duration)]
2753	$itk_component(dial) configure -max $time
2754	set delay [expr int(round(500.0/$speed))]
2755	set timePerStep [expr {double($time) / $delay}]
2756	set nSteps [expr {int(ceil($current/$timePerStep))}]
2757	EventuallyGoto $nSteps
2758	}
2759	"speed" {
2760	set speed [$itk_component(speed) value]
2761	set _flow(delay) [expr int(round(500.0/$speed))]
2762	}
2763	"duration" {
2764	set max [str2millisecs $_settings($this-duration)]
2765	if { $max < 0 } {
2766	bell
2767	return
2768	}
2769	set _flow(duration) $max
2770	set _settings($this-duration) [millisecs2str $max]
2771	$itk_component(dial) configure -max $max
2772	}
2773	"off" {
2774	set _flow(state) 0
2775	$_dispatcher cancel !play
2776	$itk_component(play) deselect
2777	}
2778	"on" {
2779	flow speed
2780	flow duration
2781	set _flow(state) 1
2782	set _settings($this-currenttime) 0
2783	$itk_component(play) select
2784	}
2785	"stop" {
2786	if { $_flow(state) } {
2787	flow off
2788	flow reset
2789	}
2790	}
2791	"pause" {
2792	if { $_flow(state) } {
2793	flow off
2794	}
2795	}
2796	"play" {
2797	# If the flow is currently off, then restart it.
2798	if { !$_flow(state) } {
2799	flow on
2800	# If we're at the end of the flow, reset the flow.
2801	set _settings($this-currenttime) \
2802	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2803	if { $_settings($this-currenttime) >= $_flow(duration) } {
2804	set _settings($this-step) 1
2805	SendCmd "flow reset"
2806	}
2807	flow next
2808	}
2809	}
2810	"toggle" {
2811	if { $_settings($this-play) } {
2812	flow play
2813	} else {
2814	flow pause
2815	}
2816	}
2817	"reset" {
2818	set _settings($this-currenttime) 0
2819	SendCmd "flow reset"
2820	if { !$_flow(state) } {
2821	SendCmd "flow next"
2822	}
2823	}
2824	"next" {
2825	if { ![winfo viewable $itk_component(3dview)] } {
2826	flow stop
2827	return
2828	}
2829	set _settings($this-currenttime) \
2830	[expr {$_settings($this-currenttime) + $_flow(delay)}]
2831	if { $_settings($this-currenttime) >= $_flow(duration) } {
2832	if { !$_settings($this-loop) } {
2833	flow off
2834	return
2835	}
2836	flow reset
2837	} else {
2838	SendCmd "flow next"
2839	}
2840	$_dispatcher event -after $_flow(delay) !play
2841	}
2842	default {
2843	error "bad option \"$option\": should be play, stop, toggle, or reset."
2844	}
2845	}
2846	}
2847
2848	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2849	switch -- $option {
2850	"start" {
2851	$_dispatcher dispatch $this !waiticon \
2852	"[itcl::code $this WaitIcon "next" $widget] ; list"
2853	set _icon 0
2854	$widget configure -image [Rappture::icon bigroller${_icon}]
2855	$_dispatcher event -after 100 !waiticon
2856	}
2857	"next" {
2858	incr _icon
2859	if { $_icon >= 8 } {
2860	set _icon 0
2861	}
2862	$widget configure -image [Rappture::icon bigroller${_icon}]
2863	$_dispatcher event -after 100 !waiticon
2864	}
2865	"stop" {
2866	$_dispatcher cancel !waiticon
2867	}
2868	}
2869	}
2870
2871	itcl::body Rappture::FlowvisViewer::GetPngImage { widget width height } {
2872	set token "print[incr _nextToken]"
2873	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2874	set $var ""
2875
2876	# Setup an automatic timeout procedure.
2877	$_dispatcher dispatch $this !pngtimeout "set $var {} ; list"
2878
2879	set popup .flowvisviewerprint
2880	if {![winfo exists $popup]} {
2881	Rappture::Balloon $popup -title "Generating file..."
2882	set inner [$popup component inner]
2883	label $inner.title -text "Generating hardcopy." -font "Arial 10 bold"
2884	label $inner.please -text "This may take a minute." -font "Arial 10"
2885	label $inner.icon -image [Rappture::icon bigroller0]
2886	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2887	-command [list set $var ""]
2888	blt::table $inner \
2889	0,0 $inner.title -cspan 2 \
2890	1,0 $inner.please -anchor w \
2891	1,1 $inner.icon -anchor e \
2892	2,0 $inner.cancel -cspan 2
2893	blt::table configure $inner r0 -pady 4
2894	blt::table configure $inner r2 -pady 4
2895	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2896	} else {
2897	set inner [$popup component inner]
2898	}
2899
2900	$_dispatcher event -after 60000 !pngtimeout
2901	WaitIcon start $inner.icon
2902	grab set $inner
2903	focus $inner.cancel
2904
2905	SendCmd "print $token $width $height"
2906
2907	$popup activate $widget below
2908	update
2909	# We wait here for either
2910	# 1) the png to be delivered or
2911	# 2) timeout or
2912	# 3) user cancels the operation.
2913	tkwait variable $var
2914
2915	# Clean up.
2916	$_dispatcher cancel !pngtimeout
2917	WaitIcon stop $inner.icon
2918	grab release $inner
2919	$popup deactivate
2920	update
2921
2922	if { $_hardcopy($this-$token) != "" } {
2923	return [list .png $_hardcopy($this-$token)]
2924	}
2925	return ""
2926	}
2927
2928	itcl::body Rappture::FlowvisViewer::GetMovie { widget w h } {
2929	set token "movie[incr _nextToken]"
2930	set var ::Rappture::FlowvisViewer::_hardcopy($this-$token)
2931	set $var ""
2932
2933	# Setup an automatic timeout procedure.
2934	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2935	set popup .flowvisviewermovie
2936	if {![winfo exists $popup]} {
2937	Rappture::Balloon $popup -title "Generating movie..."
2938	set inner [$popup component inner]
2939	label $inner.title -text "Generating movie for download" \
2940	-font "Arial 10 bold"
2941	label $inner.please -text "This may take a few minutes." \
2942	-font "Arial 10"
2943	label $inner.icon -image [Rappture::icon bigroller0]
2944	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2945	-command [list set $var ""]
2946	blt::table $inner \
2947	0,0 $inner.title -cspan 2 \
2948	1,0 $inner.please -anchor w \
2949	1,1 $inner.icon -anchor e \
2950	2,0 $inner.cancel -cspan 2
2951	blt::table configure $inner r0 -pady 4
2952	blt::table configure $inner r2 -pady 4
2953	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2954	} else {
2955	set inner [$popup component inner]
2956	}
2957	# Timeout is set to 10 minutes.
2958	$_dispatcher event -after 600000 !movietimeout
2959	WaitIcon start $inner.icon
2960	grab set $inner
2961	focus $inner.cancel
2962
2963	flow duration
2964	flow speed
2965	set nframes [expr round($_flow(duration) / $_flow(delay))]
2966	set framerate [expr 1000.0 / $_flow(delay)]
2967
2968	# These are specific to MPEG1 video generation
2969	set framerate 25.0
2970	set bitrate 6.0e+6
2971
2972	set start [clock seconds]
2973	SendCmd "flow video $token -width $w -height $h -numframes $nframes "
2974
2975	$popup activate $widget below
2976	update
2977	# We wait here until
2978	# 1. the movie is delivered or
2979	# 2. we've timed out or
2980	# 3. the user has canceled the operation.b
2981	tkwait variable $var
2982
2983	puts stderr "Video generated in [expr [clock seconds] - $start] seconds."
2984
2985	# Clean up.
2986	$_dispatcher cancel !movietimeout
2987	WaitIcon stop $inner.icon
2988	grab release $inner
2989	$popup deactivate
2990	destroy $popup
2991	update
2992
2993	# This will both cancel the movie generation (if it hasn't already
2994	# completed) and reset the flow.
2995	SendCmd "flow reset"
2996	if { $_hardcopy($this-$token) != "" } {
2997	return [list .mpg $_hardcopy($this-$token)]
2998	}
2999	return ""
3000	}
3001
3002	itcl::body Rappture::FlowvisViewer::str2millisecs { value } {
3003	set parts [split $value :]
3004	set secs 0
3005	set mins 0
3006	if { [llength $parts] == 1 } {
3007	scan [lindex $parts 0] "%d" secs
3008	} else {
3009	scan [lindex $parts 1] "%d" secs
3010	scan [lindex $parts 0] "%d" mins
3011	}
3012	set ms [expr {(($mins * 60) + $secs) * 1000.0}]
3013	if { $ms > 600000.0 } {
3014	set ms 600000.0
3015	}
3016	if { $ms == 0.0 } {
3017	set ms 60000.0
3018	}
3019	return $ms
3020	}
3021
3022	itcl::body Rappture::FlowvisViewer::millisecs2str { value } {
3023	set min [expr floor($value / 60000.0)]
3024	set sec [expr ($value - ($min*60000.0)) / 1000.0]
3025	return [format %02d:%02d [expr round($min)] [expr round($sec)]]
3026	}
3027
3028	itcl::body Rappture::FlowvisViewer::SetOrientation {} {
3029	set quat [$itk_component(orientation) value]
3030	set quat [$itk_component(orientation) translate $quat]
3031	foreach name { qw qx qy qz } comp $quat {
3032	set _view($name) $comp
3033	set _settings($this-$name) $comp
3034	}
3035	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
3036	$_arcball quaternion $q
3037	SendCmd "camera orient $q"
3038	SendCmd "camera reset"
3039	set $_view(pan-x) 0.0
3040	set $_view(pan-y) 0.0
3041	set $_view(zoom) 1.0
3042	set _settings($this-pan-x) $_view(pan-x)
3043	set _settings($this-pan-y) $_view(pan-y)
3044	set _settings($this-zoom) $_view(zoom)
3045	}

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