Context Navigation

source: trunk/gui/scripts/flowvisviewer.tcl @ 1463

Last change on this file since 1463 was 1463, checked in by gah, 12 years ago

File size: 89.2 KB

Line
1
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) 2004-2005 Purdue Research Foundation
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 download {option args}
61	public method flow {option}
62	public method get {args}
63	public method isconnected {}
64	public method limits { tf }
65	public method overmarker { m x }
66	public method parameters {title args} {
67	# do nothing
68	}
69	public method rmdupmarker { m x }
70	public method scale {args}
71	public method updatetransferfuncs {}
72
73	protected method Connect {}
74	protected method CurrentVolumeIds {{what -all}}
75	protected method Disconnect {}
76	protected method DoResize {}
77	protected method ResizeLegend {}
78	protected method FixSettings {what {value ""}}
79	protected method Pan {option x y}
80	protected method Rebuild {}
81	protected method ReceiveData { args }
82	protected method ReceiveImage { args }
83	protected method ReceiveLegend { tf vmin vmax size }
84	protected method Rotate {option x y}
85	protected method SendCmd {string}
86	protected method SendDataObjs {}
87	protected method SendTransferFuncs {}
88	protected method Slice {option args}
89	protected method SlicerTip {axis}
90	protected method Zoom {option}
91
92	# soon to be removed.
93	protected method Flow {option args}
94	protected method Play {}
95	protected method Pause {}
96
97
98	# The following methods are only used by this class.
99
100	private method AddIsoMarker { x y }
101	private method BuildCameraTab {}
102	private method BuildCutplanesTab {}
103	private method BuildViewTab {}
104	private method BuildVolumeTab {}
105	private method ComputeTransferFunc { tf }
106	private method EventuallyResize { w h }
107	private method EventuallyResizeLegend { }
108	private method FlowCmd { dataobj comp nbytes extents }
109	private method GetMovie { widget width height }
110	private method NameTransferFunc { dataobj comp }
111	private method PanCamera {}
112	private method ParseLevelsOption { tf levels }
113	private method ParseMarkersOption { tf markers }
114	private method WaitIcon { option widget }
115
116	private method GetFlowInfo { widget }
117	private method particles { tag name }
118	private method box { tag name }
119	private method streams { tag name }
120
121	private variable _outbuf ;# buffer for outgoing commands
122
123	private variable _dlist "" ;# list of data objects
124	private variable _allDataObjs
125	private variable _obj2ovride ;# maps dataobj => style override
126	private variable _obj2id ;# maps dataobj-component to volume ID
127	# in the server
128	private variable _id2obj ;# maps dataobj => volume ID in server
129	private variable _sendobjs "" ;# list of data objs to send to server
130	private variable _recvObjs ;# list of data objs to send to server
131	private variable _obj2style ;# maps dataobj-component to transfunc
132	private variable _style2objs ;# maps tf back to list of
133	# dataobj-components using the tf.
134	private variable _obj2flow; # Maps dataobj-component to a flow.
135
136	private variable _click ;# info used for rotate operations
137	private variable _limits ;# autoscale min/max for all axes
138	private variable _view ;# view params for 3D view
139	private variable _isomarkers ;# array of isosurface level values 0..1
140	private common _settings
141	private variable _activeTf "" ;# The currently active transfer function.
142	private variable _first "" ;# This is the topmost volume.
143	private variable _buffering 0
144	private variable _flow
145	# This
146	# indicates which isomarkers and transfer
147	# function to use when changing markers,
148	# opacity, or thickness.
149	common _downloadPopup ;# download options from popup
150
151	private common _hardcopy
152	private variable _width 0
153	private variable _height 0
154	private variable _resizePending 0
155	private variable _resizeLegendPending 0
156	}
157
158	itk::usual FlowvisViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::FlowvisViewer::constructor { hostlist args } {
167
168	# Draw legend event
169	$_dispatcher register !legend
170	$_dispatcher dispatch $this !legend "[itcl::code $this ResizeLegend]; list"
171
172	# Send dataobjs event
173	$_dispatcher register !send_dataobjs
174	$_dispatcher dispatch $this !send_dataobjs \
175	"[itcl::code $this SendDataObjs]; list"
176
177	# Send transferfunctions event
178	$_dispatcher register !send_transfunc
179	$_dispatcher dispatch $this !send_transfunc \
180	"[itcl::code $this SendTransferFuncs]; list"
181
182	# Rebuild event.
183	$_dispatcher register !rebuild
184	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
185
186	# Resize event.
187	$_dispatcher register !resize
188	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
189
190	$_dispatcher register !play
191	$_dispatcher dispatch $this !play "[itcl::code $this flow next]; list"
192
193	set _flow(state) 0
194
195	set _outbuf ""
196
197	array set _downloadPopup {
198	format draft
199	}
200	#
201	# Populate parser with commands handle incoming requests
202	#
203	$_parser alias image [itcl::code $this ReceiveImage]
204	$_parser alias legend [itcl::code $this ReceiveLegend]
205	$_parser alias data [itcl::code $this ReceiveData]
206
207	# Initialize the view to some default parameters.
208	array set _view {
209	theta 45
210	phi 45
211	psi 0
212	zoom 1.0
213	pan-x 0
214	pan-y 0
215	}
216	set _obj2id(count) 0
217	set _id2obj(count) 0
218	set _limits(vmin) 0.0
219	set _limits(vmax) 1.0
220
221	array set _settings [subst {
222	$this-loop 0
223	$this-pan-x $_view(pan-x)
224	$this-pan-y $_view(pan-y)
225	$this-phi $_view(phi)
226	$this-play 0
227	$this-psi $_view(psi)
228	$this-step 0
229	$this-speed 500
230	$this-duration 1:00
231	$this-theta $_view(theta)
232	$this-volume 1
233	$this-xcutplane 0
234	$this-xcutposition 0
235	$this-ycutplane 0
236	$this-ycutposition 0
237	$this-zcutplane 0
238	$this-zcutposition 0
239	$this-zoom $_view(zoom)
240	}]
241
242	set f [$itk_component(main) component controls]
243	itk_component add reset {
244	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
245	-highlightthickness 0 \
246	-image [Rappture::icon reset-view] \
247	-command [itcl::code $this Zoom reset]
248	} {
249	usual
250	ignore -highlightthickness
251	}
252	pack $itk_component(reset) -side top -padx 2 -pady 2
253	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
254
255	itk_component add zoomin {
256	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
257	-highlightthickness 0 \
258	-image [Rappture::icon zoom-in] \
259	-command [itcl::code $this Zoom in]
260	} {
261	usual
262	ignore -highlightthickness
263	}
264	pack $itk_component(zoomin) -side top -padx 2 -pady 2
265	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
266
267	itk_component add zoomout {
268	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
269	-highlightthickness 0 \
270	-image [Rappture::icon zoom-out] \
271	-command [itcl::code $this Zoom out]
272	} {
273	usual
274	ignore -highlightthickness
275	}
276	pack $itk_component(zoomout) -side top -padx 2 -pady 2
277	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
278
279	itk_component add volume {
280	Rappture::PushButton $f.volume \
281	-onimage [Rappture::icon volume-on] \
282	-offimage [Rappture::icon volume-off] \
283	-command [itcl::code $this FixSettings volume] \
284	-variable [itcl::scope _settings($this-volume)]
285	}
286	$itk_component(volume) select
287	Rappture::Tooltip::for $itk_component(volume) \
288	"Toggle the volume cloud on/off"
289	pack $itk_component(volume) -padx 2 -pady 2
290
291	BuildViewTab
292	BuildVolumeTab
293	BuildCutplanesTab
294	BuildCameraTab
295
296
297	bind $itk_component(3dview) <Configure> \
298	[itcl::code $this EventuallyResize %w %h]
299
300	# Legend
301	set _image(legend) [image create photo]
302	itk_component add legend {
303	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
304	} {
305	usual
306	ignore -highlightthickness
307	rename -background -plotbackground plotBackground Background
308	}
309	bind $itk_component(legend) <Configure> \
310	[itcl::code $this EventuallyResizeLegend]
311
312	# Hack around the Tk panewindow. The problem is that the requested
313	# size of the 3d view isn't set until an image is retrieved from
314	# the server. So the panewindow uses the tiny size.
315	set w 10000
316	pack forget $itk_component(3dview)
317	blt::table $itk_component(plotarea) \
318	0,0 $itk_component(3dview) -fill both -reqwidth $w \
319	1,0 $itk_component(legend) -fill x
320	blt::table configure $itk_component(plotarea) r1 -resize none
321	# Create flow controls...
322
323	itk_component add flowcontrols {
324	frame $itk_interior.flowcontrols
325	} {
326	usual
327	rename -background -controlbackground controlBackground Background
328	}
329	pack forget $itk_component(main)
330	blt::table $itk_interior \
331	0,0 $itk_component(main) -fill both \
332	1,0 $itk_component(flowcontrols) -fill x
333	blt::table configure $itk_interior r1 -resize none
334
335	# Rewind
336	itk_component add rewind {
337	button $itk_component(flowcontrols).reset \
338	-borderwidth 1 -padx 1 -pady 1 \
339	-image [Rappture::icon flow-rewind] \
340	-command [itcl::code $this flow reset]
341	} {
342	usual
343	ignore -borderwidth
344	rename -highlightbackground -controlbackground controlBackground \
345	Background
346	}
347	Rappture::Tooltip::for $itk_component(rewind) \
348	"Rewind flow"
349
350	# Stop
351	itk_component add stop {
352	button $itk_component(flowcontrols).stop \
353	-borderwidth 1 -padx 1 -pady 1 \
354	-image [Rappture::icon flow-stop] \
355	-command [itcl::code $this flow stop]
356	} {
357	usual
358	ignore -borderwidth
359	rename -highlightbackground -controlbackground controlBackground \
360	Background
361	}
362	Rappture::Tooltip::for $itk_component(stop) \
363	"Stop flow"
364
365	# Play
366	itk_component add play {
367	Rappture::PushButton $itk_component(flowcontrols).play \
368	-onimage [Rappture::icon flow-pause] \
369	-offimage [Rappture::icon flow-play] \
370	-variable [itcl::scope _settings($this-play)] \
371	-command [itcl::code $this flow toggle]
372	}
373	set fg [option get $itk_component(hull) font Font]
374	Rappture::Tooltip::for $itk_component(play) \
375	"Play/Pause flow"
376
377	# Loop
378	itk_component add loop {
379	Rappture::PushButton $itk_component(flowcontrols).loop \
380	-onimage [Rappture::icon flow-loop] \
381	-offimage [Rappture::icon flow-loop] \
382	-variable [itcl::scope _settings($this-loop)]
383	}
384	Rappture::Tooltip::for $itk_component(loop) \
385	"Play continuously"
386
387	# Frame
388	itk_component add frame {
389	::scale $itk_component(flowcontrols).frame -from 1 -to 100 \
390	-showvalue 0 -orient horizontal -width 14 \
391	-state disabled \
392	-variable [itcl::scope _settings($this-currenttime)] \
393	-highlightthickness 0
394	} {
395	usual
396	ignore -highlightthickness
397	rename -background -controlbackground controlBackground Background
398	}
399	$itk_component(frame) set 1
400
401	itk_component add dial {
402	Rappture::Radiodial $itk_component(flowcontrols).dial \
403	-length 10 -valuewidth 0 -valuepadding 0 -padding 6 \
404	-linecolor "" -activelinecolor "" \
405	-knobimage [Rappture::icon knob2] -knobposition center@middle
406	} {
407	usual
408	keep -dialprogresscolor
409	rename -background -controlbackground controlBackground Background
410	}
411	grid $itk_component(dial) -row 1 -column 1 -sticky ew
412	bind $itk_component(dial) <<Value>> [itcl::code $this _fixValue]
413
414	# Duration
415	itk_component add duration {
416	entry $itk_component(flowcontrols).duration \
417	-textvariable [itcl::scope _settings($this-duration)] \
418	-bg white -width 6
419	} {
420	usual
421	ignore -highlightthickness -background
422	}
423	bind $itk_component(duration) <Return> [itcl::code $this flow duration]
424
425	itk_component add durationlabel {
426	label $itk_component(flowcontrols).durationl \
427	-text "Duration:" -font $fg \
428	-highlightthickness 0
429	} {
430	usual
431	ignore -highlightthickness
432	rename -background -controlbackground controlBackground Background
433	}
434
435	itk_component add speedlabel {
436	label $itk_component(flowcontrols).speedl -text "Speed:" -font $fg \
437	-highlightthickness 0
438	} {
439	usual
440	ignore -highlightthickness
441	rename -background -controlbackground controlBackground Background
442	}
443
444	# Speed
445	itk_component add speed {
446	Rappture::Spinint $itk_component(flowcontrols).speed \
447	-min 1 -max 10 -width 2
448	} {
449	usual
450	ignore -highlightthickness
451	rename -background -controlbackground controlBackground Background
452	}
453	$itk_component(speed) value 1
454	bind $itk_component(speed) <<Value>> [itcl::code $this flow speed]
455
456
457	blt::table $itk_component(flowcontrols) \
458	0,0 $itk_component(rewind) -padx {3 0} \
459	0,1 $itk_component(stop) -padx {2 0} \
460	0,2 $itk_component(play) -padx {2 0} \
461	0,3 $itk_component(loop) -padx {2 0} \
462	0,4 $itk_component(dial) -fill x -padx {2 0 } \
463	0,5 $itk_component(speedlabel) -padx {2 0} \
464	0,6 $itk_component(speed) -padx {2 0} \
465	0,7 $itk_component(durationlabel) -padx {2 0} \
466	0,8 $itk_component(duration) -padx { 2 3}
467
468	blt::table configure $itk_component(flowcontrols) c* -resize none
469	blt::table configure $itk_component(flowcontrols) c4 -resize both
470	blt::table configure $itk_component(flowcontrols) r0 -pady 1
471	# Bindings for rotation via mouse
472	bind $itk_component(3dview) <ButtonPress-1> \
473	[itcl::code $this Rotate click %x %y]
474	bind $itk_component(3dview) <B1-Motion> \
475	[itcl::code $this Rotate drag %x %y]
476	bind $itk_component(3dview) <ButtonRelease-1> \
477	[itcl::code $this Rotate release %x %y]
478
479	bind $itk_component(3dview) <Configure> \
480	[itcl::code $this EventuallyResize %w %h]
481
482	# Bindings for panning via mouse
483	bind $itk_component(3dview) <ButtonPress-2> \
484	[itcl::code $this Pan click %x %y]
485	bind $itk_component(3dview) <B2-Motion> \
486	[itcl::code $this Pan drag %x %y]
487	bind $itk_component(3dview) <ButtonRelease-2> \
488	[itcl::code $this Pan release %x %y]
489
490	# Bindings for panning via keyboard
491	bind $itk_component(3dview) <KeyPress-Left> \
492	[itcl::code $this Pan set -10 0]
493	bind $itk_component(3dview) <KeyPress-Right> \
494	[itcl::code $this Pan set 10 0]
495	bind $itk_component(3dview) <KeyPress-Up> \
496	[itcl::code $this Pan set 0 -10]
497	bind $itk_component(3dview) <KeyPress-Down> \
498	[itcl::code $this Pan set 0 10]
499	bind $itk_component(3dview) <Shift-KeyPress-Left> \
500	[itcl::code $this Pan set -2 0]
501	bind $itk_component(3dview) <Shift-KeyPress-Right> \
502	[itcl::code $this Pan set 2 0]
503	bind $itk_component(3dview) <Shift-KeyPress-Up> \
504	[itcl::code $this Pan set 0 -2]
505	bind $itk_component(3dview) <Shift-KeyPress-Down> \
506	[itcl::code $this Pan set 0 2]
507
508	# Bindings for zoom via keyboard
509	bind $itk_component(3dview) <KeyPress-Prior> \
510	[itcl::code $this Zoom out]
511	bind $itk_component(3dview) <KeyPress-Next> \
512	[itcl::code $this Zoom in]
513
514	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
515
516	if {[string equal "x11" [tk windowingsystem]]} {
517	# Bindings for zoom via mouse
518	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
519	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
520	}
521
522	set _image(download) [image create photo]
523
524	eval itk_initialize $args
525
526	Connect
527	}
528
529	# ----------------------------------------------------------------------
530	# DESTRUCTOR
531	# ----------------------------------------------------------------------
532	itcl::body Rappture::FlowvisViewer::destructor {} {
533	set _sendobjs "" ;# stop any send in progress
534	$_dispatcher cancel !rebuild
535	$_dispatcher cancel !send_dataobjs
536	$_dispatcher cancel !send_transfunc
537	image delete $_image(plot)
538	image delete $_image(legend)
539	image delete $_image(download)
540	array unset _settings $this-*
541	}
542
543	# ----------------------------------------------------------------------
544	# USAGE: add <dataobj> ?<settings>?
545	#
546	# Clients use this to add a data object to the plot. The optional
547	# <settings> are used to configure the plot. Allowed settings are
548	# -color, -brightness, -width, -linestyle, and -raise.
549	# ----------------------------------------------------------------------
550	itcl::body Rappture::FlowvisViewer::add {dataobj {settings ""}} {
551	array set params {
552	-color auto
553	-width 1
554	-linestyle solid
555	-brightness 0
556	-raise 0
557	-description ""
558	-param ""
559	}
560	foreach {opt val} $settings {
561	if {![info exists params($opt)]} {
562	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
563	}
564	set params($opt) $val
565	}
566	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
567	# can't handle -autocolors yet
568	set params(-color) black
569	}
570	foreach comp [$dataobj components] {
571	set flowobj [$dataobj flowhints $comp]
572	if { $flowobj == "" } {
573	puts stderr "no flowhints $dataobj-$comp"
574	continue
575	}
576	set _obj2flow($dataobj-$comp) $flowobj
577	}
578	set pos [lsearch -exact $dataobj $_dlist]
579	if {$pos < 0} {
580	lappend _dlist $dataobj
581	set _allDataObjs($dataobj) 1
582	set _obj2ovride($dataobj-color) $params(-color)
583	set _obj2ovride($dataobj-width) $params(-width)
584	set _obj2ovride($dataobj-raise) $params(-raise)
585	$_dispatcher event -idle !rebuild
586	}
587	}
588
589	# ----------------------------------------------------------------------
590	# USAGE: get ?-objects?
591	# USAGE: get ?-image 3dview\|legend?
592	#
593	# Clients use this to query the list of objects being plotted, in
594	# order from bottom to top of this result. The optional "-image"
595	# flag can also request the internal images being shown.
596	# ----------------------------------------------------------------------
597	itcl::body Rappture::FlowvisViewer::get {args} {
598	if {[llength $args] == 0} {
599	set args "-objects"
600	}
601
602	set op [lindex $args 0]
603	switch -- $op {
604	-objects {
605	# put the dataobj list in order according to -raise options
606	set dlist $_dlist
607	foreach obj $dlist {
608	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
609	set i [lsearch -exact $dlist $obj]
610	if {$i >= 0} {
611	set dlist [lreplace $dlist $i $i]
612	lappend dlist $obj
613	}
614	}
615	}
616	return $dlist
617	}
618	-image {
619	if {[llength $args] != 2} {
620	error "wrong # args: should be \"get -image 3dview\|legend\""
621	}
622	switch -- [lindex $args end] {
623	3dview {
624	return $_image(plot)
625	}
626	legend {
627	return $_image(legend)
628	}
629	default {
630	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
631	}
632	}
633	}
634	default {
635	error "bad option \"$op\": should be -objects or -image"
636	}
637	}
638	}
639
640	# ----------------------------------------------------------------------
641	# USAGE: delete ?<dataobj1> <dataobj2> ...?
642	#
643	# Clients use this to delete a dataobj from the plot. If no dataobjs
644	# are specified, then all dataobjs are deleted. No data objects are
645	# deleted. They are only removed from the display list.
646	#
647	# ----------------------------------------------------------------------
648	itcl::body Rappture::FlowvisViewer::delete {args} {
649	flow stop
650	if {[llength $args] == 0} {
651	set args $_dlist
652	}
653
654	# Delete all specified dataobjs
655	set changed 0
656	foreach dataobj $args {
657	set pos [lsearch -exact $_dlist $dataobj]
658	if { $pos >= 0 } {
659	foreach comp [$dataobj components] {
660	if { [info exists obj2id($dataobj-$comp)] } {
661	set ivol $_obj2id($dataobj-$comp)
662	array unset _limits $ivol-*
663	}
664	}
665	set _dlist [lreplace $_dlist $pos $pos]
666	array unset _obj2ovride $dataobj-*
667	array unset _obj2flow $dataobj-*
668	array unset _obj2id $dataobj-*
669	array unset _obj2style $dataobj-*
670	set changed 1
671	}
672	}
673	# If anything changed, then rebuild the plot
674	if {$changed} {
675	# Repair the reverse lookup
676	foreach tf [array names _style2objs] {
677	set list {}
678	foreach {dataobj comp} $_style2objs($tf) break
679	if { [info exists _obj2id($dataobj-$comp)] } {
680	lappend list $dataobj $comp
681	}
682	if { $list == "" } {
683	array unset _style2objs $tf
684	} else {
685	set _style2objs($tf) $list
686	}
687	}
688	$_dispatcher event -idle !rebuild
689	}
690	}
691
692	# ----------------------------------------------------------------------
693	# USAGE: scale ?<data1> <data2> ...?
694	#
695	# Sets the default limits for the overall plot according to the
696	# limits of the data for all of the given <data> objects. This
697	# accounts for all objects--even those not showing on the screen.
698	# Because of this, the limits are appropriate for all objects as
699	# the user scans through data in the ResultSet viewer.
700	# ----------------------------------------------------------------------
701	itcl::body Rappture::FlowvisViewer::scale {args} {
702	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
703	set _limits($val) ""
704	}
705	foreach obj $args {
706	foreach axis {x y z v} {
707
708	foreach { min max } [$obj limits $axis] break
709
710	if {"" != $min && "" != $max} {
711	if {"" == $_limits(${axis}min)} {
712	set _limits(${axis}min) $min
713	set _limits(${axis}max) $max
714	} else {
715	if {$min < $_limits(${axis}min)} {
716	set _limits(${axis}min) $min
717	}
718	if {$max > $_limits(${axis}max)} {
719	set _limits(${axis}max) $max
720	}
721	}
722	}
723	}
724	}
725	}
726
727	# ----------------------------------------------------------------------
728	# USAGE: download coming
729	# USAGE: download controls <downloadCommand>
730	# USAGE: download now
731	#
732	# Clients use this method to create a downloadable representation
733	# of the plot. Returns a list of the form {ext string}, where
734	# "ext" is the file extension (indicating the type of data) and
735	# "string" is the data itself.
736	# ----------------------------------------------------------------------
737	itcl::body Rappture::FlowvisViewer::download {option args} {
738	switch $option {
739	coming {
740	if {[catch {
741	blt::winop snap $itk_component(plotarea) $_image(download)
742	}]} {
743	$_image(download) configure -width 1 -height 1
744	$_image(download) put #000000
745	}
746	}
747	controls {
748	set popup .flowvisviewerdownload
749	if {![winfo exists .flowvisviewerdownload]} {
750	# if we haven't created the popup yet, do it now
751	Rappture::Balloon $popup \
752	-title "[Rappture::filexfer::label downloadWord] as..."
753	set inner [$popup component inner]
754	label $inner.summary -text "" -anchor w
755	pack $inner.summary -side top
756	set img $_image(plot)
757	set res "[image width $img]x[image height $img]"
758	radiobutton $inner.draft -text "Image (draft $res)" \
759	-variable Rappture::MolvisViewer::_downloadPopup(format) \
760	-value draft
761	pack $inner.draft -anchor w
762
763	set res "640x480"
764	radiobutton $inner.medium -text "Movie (standard $res)" \
765	-variable Rappture::MolvisViewer::_downloadPopup(format) \
766	-value $res
767	pack $inner.medium -anchor w
768
769	set res "1024x768"
770	radiobutton $inner.high -text "Movie (high quality $res)" \
771	-variable Rappture::MolvisViewer::_downloadPopup(format) \
772	-value $res
773	pack $inner.high -anchor w
774	button $inner.go -text [Rappture::filexfer::label download] \
775	-command [lindex $args 0]
776	pack $inner.go -pady 4
777	$inner.draft select
778	} else {
779	set inner [$popup component inner]
780	}
781	set num [llength [get]]
782	set num [expr {($num == 1) ? "1 result" : "$num results"}]
783	$inner.summary configure -text "[Rappture::filexfer::label downloadWord] $num in the following format:"
784	update idletasks ;# fix initial sizes
785	return $popup
786	}
787	now {
788	set popup .molvisviewerdownload
789	if {[winfo exists .molvisviewerdownload]} {
790	$popup deactivate
791	}
792	switch -- $_downloadPopup(format) {
793	draft {
794	# Get the image data (as base64) and decode it back to
795	# binary. This is better than writing to temporary
796	# files. When we switch to the BLT picture image it
797	# won't be necessary to decode the image data.
798	set bytes [$_image(plot) data -format "jpeg -quality 100"]
799	set data [Rappture::encoding::decode -as b64 $data]
800	return [list .jpg $data]
801	}
802	"640x480" {
803	return [$this GetMovie [lindex $args 0] 640 480]
804	}
805	"1024x768" {
806	return [$this GetMovie [lindex $args 0] 1024 768]
807	}
808	}
809	}
810	default {
811	error "bad option \"$option\": should be coming, controls, now"
812	}
813	}
814	}
815
816	# ----------------------------------------------------------------------
817	# USAGE: Connect ?<host:port>,<host:port>...?
818	#
819	# Clients use this method to establish a connection to a new
820	# server, or to reestablish a connection to the previous server.
821	# Any existing connection is automatically closed.
822	# ----------------------------------------------------------------------
823	itcl::body Rappture::FlowvisViewer::Connect {} {
824	set _hosts [GetServerList "nanovis"]
825	if { "" == $_hosts } {
826	return 0
827	}
828	set result [VisViewer::Connect $_hosts]
829	if { $result } {
830	set w [winfo width $itk_component(3dview)]
831	set h [winfo height $itk_component(3dview)]
832	EventuallyResize $w $h
833	}
834	return $result
835	}
836
837	#
838	# isconnected --
839	#
840	# Indicates if we are currently connected to the visualization server.
841	#
842	itcl::body Rappture::FlowvisViewer::isconnected {} {
843	return [VisViewer::IsConnected]
844	}
845
846	#
847	# Disconnect --
848	#
849	# Clients use this method to disconnect from the current rendering
850	# server.
851	#
852	itcl::body Rappture::FlowvisViewer::Disconnect {} {
853	VisViewer::Disconnect
854
855	# disconnected -- no more data sitting on server
856	set _outbuf ""
857	catch {unset _obj2id}
858	array unset _id2obj
859	set _obj2id(count) 0
860	set _id2obj(count) 0
861	set _sendobjs ""
862	}
863
864	#
865	# SendCmd
866	#
867	# Send commands off to the rendering server. If we're currently
868	# sending data objects to the server, buffer the commands to be
869	# sent later.
870	#
871	itcl::body Rappture::FlowvisViewer::SendCmd { string } {
872	if { $_buffering } {
873	append _outbuf $string "\n"
874	} else {
875	foreach line [split $string \n] {
876	SendEcho >>line $line
877	}
878	SendBytes "$string\n"
879	}
880	}
881
882	# ----------------------------------------------------------------------
883	# USAGE: SendDataObjs
884	#
885	# Used internally to send a series of volume objects off to the
886	# server. Sends each object, a little at a time, with updates in
887	# between so the interface doesn't lock up.
888	# ----------------------------------------------------------------------
889	itcl::body Rappture::FlowvisViewer::SendDataObjs {} {
890	puts stderr "in SendDataObjs"
891
892	blt::busy hold $itk_component(hull); update idletasks
893	foreach dataobj $_sendobjs {
894	foreach comp [$dataobj components] {
895	# Send the data as one huge base64-encoded mess -- yuck!
896	set data [$dataobj blob $comp]
897	set nbytes [string length $data]
898	set extents [$dataobj extents $comp]
899	# I have a field. Is a vector field or a volume field?
900	if { $extents == 1 } {
901	set cmd "volume data follows $nbytes $dataobj-$comp\n"
902	} else {
903	set cmd [FlowCmd $dataobj $comp $nbytes $extents]
904	if { $cmd == "" } {
905	puts stderr "no command"
906	continue
907	}
908	}
909	if { ![SendBytes $cmd] } {
910	puts stderr "can't send"
911	return
912	}
913	if { ![SendBytes $data] } {
914	puts stderr "can't send"
915	return
916	}
917	set ivol $_obj2id(count)
918	incr _obj2id(count)
919
920	NameTransferFunc $dataobj $comp
921	set _recvObjs($dataobj-$comp) 1
922	}
923	}
924	set _sendobjs ""
925	blt::busy release $itk_component(hull)
926
927	# Turn on buffering of commands to the server. We don't want to
928	# be preempted by a server disconnect/reconnect (which automatically
929	# generates a new call to Rebuild).
930	set _buffering 1
931
932	# activate the proper volume
933	set _first [lindex [get] 0]
934	if { "" != $_first } {
935	set axis [$_first hints updir]
936	if {"" != $axis} {
937	SendCmd "up $axis"
938	}
939
940	if 0 {
941	set location [$_first hints camera]
942	if { $location != "" } {
943	array set _view $location
944	}
945	set _settings($this-theta) $_view(theta)
946	set _settings($this-phi) $_view(phi)
947	set _settings($this-psi) $_view(psi)
948	set _settings($this-pan-x) $_view(pan-x)
949	set _settings($this-pan-y) $_view(pan-y)
950	set _settings($this-zoom) $_view(zoom)
951	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
952	SendCmd "camera angle $xyz"
953	PanCamera
954	SendCmd "camera zoom $_view(zoom)"
955	}
956	# The active transfer function is by default the first component of
957	# the first data object. This assumes that the data is always
958	# successfully transferred.
959	set comp [lindex [$_first components] 0]
960	set _activeTf [lindex $_obj2style($_first-$comp) 0]
961	}
962
963	if 0 {
964	SendCmd "volume state 0"
965	set vols {}
966	foreach key [array names _obj2id $_first-*] {
967	lappend vols $_obj2id($key)
968	}
969	if { $vols != "" && $_settings($this-volume) } {
970	SendCmd "volume state 1 $vols"
971	}
972	# sync the state of slicers
973	set vols [CurrentVolumeIds -cutplanes]
974	foreach axis {x y z} {
975	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
976	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
977	SendCmd "cutplane position $pos $axis $vols"
978	}
979
980	# Add this when we fix grid for volumes
981	SendCmd "volume axis label x \"\""
982	SendCmd "volume axis label y \"\""
983	SendCmd "volume axis label z \"\""
984	SendCmd "grid axisname x X eV"
985	SendCmd "grid axisname y Y eV"
986	SendCmd "grid axisname z Z eV"
987	}
988
989	# Actually write the commands to the server socket. If it fails, we don't
990	# care. We're finished here.
991	SendBytes $_outbuf;
992	set _buffering 0; # Turn off buffering.
993	set _outbuf ""; # Clear the buffer.
994	}
995
996	# ----------------------------------------------------------------------
997	# USAGE: SendTransferFuncs
998	# ----------------------------------------------------------------------
999	itcl::body Rappture::FlowvisViewer::SendTransferFuncs {} {
1000	if { $_activeTf == "" } {
1001	puts stderr "no active tf"
1002	return
1003	}
1004	set tf $_activeTf
1005	if { $_first == "" } {
1006	puts stderr "no first"
1007	return
1008	}
1009
1010	# Insure that the global opacity and thickness settings (in the slider
1011	# settings widgets) are used for the active transfer-function. Update the
1012	# values in the _settings varible.
1013	set value $_settings($this-opacity)
1014	set opacity [expr { double($value) * 0.01 }]
1015	set _settings($this-$tf-opacity) $opacity
1016	set value $_settings($this-thickness)
1017	# Scale values between 0.00001 and 0.01000
1018	set thickness [expr {double($value) * 0.0001}]
1019	set _settings($this-$tf-thickness) $thickness
1020
1021	foreach key [array names _obj2style $_first-*] {
1022	if { [info exists _obj2style($key)] } {
1023	foreach tf $_obj2style($key) {
1024	ComputeTransferFunc $tf
1025	}
1026	}
1027	}
1028	ResizeLegend
1029	}
1030
1031	# ----------------------------------------------------------------------
1032	# USAGE: ReceiveImage -bytes $size -type $type -token $token
1033	#
1034	# Invoked automatically whenever the "image" command comes in from
1035	# the rendering server. Indicates that binary image data with the
1036	# specified <size> will follow.
1037	# ----------------------------------------------------------------------
1038	itcl::body Rappture::FlowvisViewer::ReceiveImage { args } {
1039	array set info {
1040	-token "???"
1041	-bytes 0
1042	-type image
1043	}
1044	array set info $args
1045	set bytes [ReceiveBytes $info(-bytes)]
1046	ReceiveEcho <<line "<read $info(-bytes) bytes"
1047	if { $info(-type) == "image" } {
1048	$_image(plot) configure -data $bytes
1049	} elseif { $info(type) == "print" } {
1050	set tag $this-print-$info(-token)
1051	set _hardcopy($tag) $bytes
1052	} elseif { $info(type) == "movie" } {
1053	set tag $this-movie-$info(-token)
1054	set _hardcopy($tag) $bytes
1055	}
1056	}
1057
1058	#
1059	# ReceiveLegend --
1060	#
1061	# The procedure is the response from the render server to each "legend"
1062	# command. The server sends back a "legend" command invoked our
1063	# the slave interpreter. The purpose is to collect data of the image
1064	# representing the legend in the canvas. In addition, the isomarkers
1065	# of the active transfer function are displayed.
1066	#
1067	# I don't know is this is the right place to display the isomarkers.
1068	# I don't know all the different paths used to draw the plot. There's
1069	# "Rebuild", "add", etc.
1070	#
1071	itcl::body Rappture::FlowvisViewer::ReceiveLegend { tf vmin vmax size } {
1072	if { ![isconnected] } {
1073	return
1074	}
1075	set bytes [ReceiveBytes $size]
1076	$_image(legend) configure -data $bytes
1077	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
1078
1079	set c $itk_component(legend)
1080	set w [winfo width $c]
1081	set h [winfo height $c]
1082	#foreach { dataobj comp } $_id2obj($ivol) break
1083	set lx 10
1084	set ly [expr {$h - 1}]
1085	if {"" == [$c find withtag transfunc]} {
1086	$c create image 10 10 -anchor nw \
1087	-image $_image(legend) -tags transfunc
1088	$c create text $lx $ly -anchor sw \
1089	-fill $itk_option(-plotforeground) -tags "limits vmin"
1090	$c create text [expr {$w-$lx}] $ly -anchor se \
1091	-fill $itk_option(-plotforeground) -tags "limits vmax"
1092	$c lower transfunc
1093	$c bind transfunc <ButtonRelease-1> \
1094	[itcl::code $this AddIsoMarker %x %y]
1095	}
1096	# Display the markers used by the active transfer function.
1097	#set tf $_activeTf
1098
1099	array set limits [limits $tf]
1100	$c itemconfigure vmin -text [format %.2g $limits(min)]
1101	$c coords vmin $lx $ly
1102
1103	$c itemconfigure vmax -text [format %.2g $limits(max)]
1104	$c coords vmax [expr {$w-$lx}] $ly
1105
1106	if { [info exists _isomarkers($tf)] } {
1107	foreach m $_isomarkers($tf) {
1108	$m visible yes
1109	}
1110	}
1111	}
1112
1113	#
1114	# ReceiveData --
1115	#
1116	# The procedure is the response from the render server to each "data
1117	# follows" command. The server sends back a "data" command invoked our
1118	# the slave interpreter. The purpose is to collect the min/max of the
1119	# volume sent to the render server. Since the client (flowvisviewer)
1120	# doesn't parse 3D data formats, we rely on the server (flowvis) to
1121	# tell us what the limits are. Once we've received the limits to all
1122	# the data we've sent (tracked by _recvObjs) we can then determine
1123	# what the transfer functions are for these # volumes.
1124	#
1125	# Note: There is a considerable tradeoff in having the server report
1126	# back what the data limits are. It means that much of the code
1127	# having to do with transfer-functions has to wait for the data
1128	# to come back, since the isomarkers are calculated based upon
1129	# the data limits. The client code is much messier because of
1130	# this. The alternative is to parse any of the 3D formats on the
1131	# client side.
1132	#
1133	itcl::body Rappture::FlowvisViewer::ReceiveData { args } {
1134	if { ![isconnected] } {
1135	return
1136	}
1137	# Arguments from server are name value pairs. Stuff them in an array.
1138	array set info $args
1139
1140	set ivol $info(id); # Id of volume created by server.
1141	set tag $info(tag)
1142	set parts [split $tag -]
1143
1144	#
1145	# Volumes don't exist until we're told about them.
1146	#
1147	set _id2obj($ivol) $parts
1148	set dataobj [lindex $parts 0]
1149	set _obj2id($tag) $ivol
1150	# It's a lie. There's no volume yet.
1151	if { $_settings($this-volume) && $dataobj == $_first } {
1152	SendCmd "volume state 1"
1153	}
1154	set _limits($ivol-min) $info(min); # Minimum value of the volume.
1155	set _limits($ivol-max) $info(max); # Maximum value of the volume.
1156	set _limits(vmin) $info(vmin); # Overall minimum value.
1157	set _limits(vmax) $info(vmax); # Overall maximum value.
1158
1159	unset _recvObjs($tag)
1160	if { [array size _recvObjs] == 0 } {
1161	updatetransferfuncs
1162	}
1163	}
1164
1165	#
1166	# Rebuild --
1167	#
1168	# Called automatically whenever something changes that affects the data
1169	# in the widget. Clears any existing data and rebuilds the widget to
1170	# display new data.
1171	#
1172	itcl::body Rappture::FlowvisViewer::Rebuild {} {
1173	#puts stderr "in Rebuild"
1174	# Hide all the isomarkers. Can't remove them. Have to remember the
1175	# settings since the user may have created/deleted/moved markers.
1176
1177	foreach tf [array names _isomarkers] {
1178	foreach m $_isomarkers($tf) {
1179	$m visible no
1180	}
1181	}
1182
1183	# in the midst of sending data? then bail out
1184	if {[llength $_sendobjs] > 0} {
1185	$_dispatcher event -idle !rebuild
1186	return
1187	}
1188
1189	# Turn on buffering of commands to the server. We don't want to
1190	# be preempted by a server disconnect/reconnect (which automatically
1191	# generates a new call to Rebuild).
1192	set _buffering 1
1193
1194	set w [winfo width $itk_component(3dview)]
1195	set h [winfo height $itk_component(3dview)]
1196	EventuallyResize $w $h
1197
1198	# Find any new data that needs to be sent to the server. Queue this up on
1199	# the _sendobjs list, and send it out a little at a time. Do this first,
1200	# before we rebuild the rest.
1201	foreach dataobj [get] {
1202	set comp [lindex [$dataobj components] 0]
1203	if {![info exists _obj2id($dataobj-$comp)]} {
1204	if { [lsearch -exact $_sendobjs $dataobj] < 0 } {
1205	lappend _sendobjs $dataobj
1206	}
1207	}
1208	}
1209
1210	#
1211	# Reset the camera and other view parameters
1212	#
1213	FixSettings light
1214	FixSettings transp
1215	FixSettings isosurface
1216	FixSettings grid
1217	FixSettings axes
1218	FixSettings outline
1219	# nothing to send -- activate the proper ivol
1220	set _first [lindex [get] 0]
1221	if {"" != $_first} {
1222	set axis [$_first hints updir]
1223	if {"" != $axis} {
1224	SendCmd "up $axis"
1225	}
1226	set location [$_first hints camera]
1227	if { $location != "" } {
1228	array set _view $location
1229	}
1230	}
1231	set _settings($this-theta) $_view(theta)
1232	set _settings($this-phi) $_view(phi)
1233	set _settings($this-psi) $_view(psi)
1234	set _settings($this-pan-x) $_view(pan-x)
1235	set _settings($this-pan-y) $_view(pan-y)
1236	set _settings($this-zoom) $_view(zoom)
1237
1238	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1239	SendCmd "camera angle $xyz"
1240	PanCamera
1241	SendCmd "camera zoom $_view(zoom)"
1242
1243	if {[llength $_sendobjs] > 0} {
1244	# send off new data objects
1245	$_dispatcher event -idle !send_dataobjs
1246	puts stderr "more sendobjs "
1247	return
1248	}
1249
1250	# nothing to send -- activate the proper ivol
1251	set _first [lindex [get] 0]
1252	if {"" != $_first} {
1253	set axis [$_first hints updir]
1254	if {"" != $axis} {
1255	SendCmd "up $axis"
1256	}
1257	set location [$_first hints camera]
1258	if { $location != "" } {
1259	array set _view $location
1260	}
1261	if { 0 && $_settings($this-volume) } {
1262	SendCmd "volume state 0"
1263	foreach key [array names _obj2id $_first-*] {
1264	lappend vols $_obj2id($key)
1265	}
1266	SendCmd "volume state 1 $vols"
1267	}
1268	#
1269	# The _obj2id and _id2style arrays may or may not have the right
1270	# information. It's possible for the server to know about volumes
1271	# that the client has assumed it's deleted. We could add checks.
1272	# But this problem needs to be fixed not bandaided.
1273	set comp [lindex [$_first components] 0]
1274	set ivol $_obj2id($_first-$comp)
1275
1276	}
1277	foreach dataobj [get] {
1278	foreach comp [$_first components] {
1279	NameTransferFunc $dataobj $comp
1280	}
1281	}
1282
1283	# sync the state of slicers
1284	set vols [CurrentVolumeIds -cutplanes]
1285	foreach axis {x y z} {
1286	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
1287	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
1288	SendCmd "cutplane position $pos $axis $vols"
1289	}
1290	SendCmd "volume data state $_settings($this-volume)"
1291	$_dispatcher event -idle !legend
1292
1293	# Actually write the commands to the server socket. If it fails, we don't
1294	# care. We're finished here.
1295	SendBytes $_outbuf;
1296	set _buffering 0; # Turn off buffering.
1297	set _outbuf ""; # Clear the buffer.
1298	#puts stderr "exit Rebuild"
1299	}
1300
1301	# ----------------------------------------------------------------------
1302	# USAGE: CurrentVolumeIds ?-cutplanes?
1303	#
1304	# Returns a list of volume server IDs for the current volume being
1305	# displayed. This is normally a single ID, but it might be a list
1306	# of IDs if the current data object has multiple components.
1307	# ----------------------------------------------------------------------
1308	itcl::body Rappture::FlowvisViewer::CurrentVolumeIds {{what -all}} {
1309	set rlist ""
1310	if { $_first == "" } {
1311	return
1312	}
1313	foreach key [array names _obj2id -] {
1314	if {[string match $_first-* $key]} {
1315	array set style {
1316	-cutplanes 1
1317	}
1318	foreach {dataobj comp} [split $key -] break
1319	array set style [lindex [$dataobj components -style $comp] 0]
1320
1321	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1322	lappend rlist $_obj2id($key)
1323	}
1324	}
1325	}
1326	return $rlist
1327	}
1328
1329	# ----------------------------------------------------------------------
1330	# USAGE: Zoom in
1331	# USAGE: Zoom out
1332	# USAGE: Zoom reset
1333	#
1334	# Called automatically when the user clicks on one of the zoom
1335	# controls for this widget. Changes the zoom for the current view.
1336	# ----------------------------------------------------------------------
1337	itcl::body Rappture::FlowvisViewer::Zoom {option} {
1338	switch -- $option {
1339	"in" {
1340	set _view(zoom) [expr {$_view(zoom)*1.25}]
1341	set _settings($this-zoom) $_view(zoom)
1342	}
1343	"out" {
1344	set _view(zoom) [expr {$_view(zoom)*0.8}]
1345	set _settings($this-zoom) $_view(zoom)
1346	}
1347	"reset" {
1348	array set _view {
1349	theta 45
1350	phi 45
1351	psi 0
1352	zoom 1.0
1353	pan-x 0
1354	pan-y 0
1355	}
1356	if { $_first != "" } {
1357	set location [$_first hints camera]
1358	if { $location != "" } {
1359	array set _view $location
1360	}
1361	}
1362	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1363	SendCmd "camera angle $xyz"
1364	PanCamera
1365	set _settings($this-theta) $_view(theta)
1366	set _settings($this-phi) $_view(phi)
1367	set _settings($this-psi) $_view(psi)
1368	set _settings($this-pan-x) $_view(pan-x)
1369	set _settings($this-pan-y) $_view(pan-y)
1370	set _settings($this-zoom) $_view(zoom)
1371	}
1372	}
1373	SendCmd "camera zoom $_view(zoom)"
1374	}
1375
1376	itcl::body Rappture::FlowvisViewer::PanCamera {} {
1377	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1378	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1379	set x $_view(pan-x)
1380	set y $_view(pan-y)
1381	SendCmd "camera pan $x $y"
1382	}
1383
1384	# ----------------------------------------------------------------------
1385	# USAGE: Rotate click <x> <y>
1386	# USAGE: Rotate drag <x> <y>
1387	# USAGE: Rotate release <x> <y>
1388	#
1389	# Called automatically when the user clicks/drags/releases in the
1390	# plot area. Moves the plot according to the user's actions.
1391	# ----------------------------------------------------------------------
1392	itcl::body Rappture::FlowvisViewer::Rotate {option x y} {
1393	switch -- $option {
1394	click {
1395	$itk_component(3dview) configure -cursor fleur
1396	set _click(x) $x
1397	set _click(y) $y
1398	set _click(theta) $_view(theta)
1399	set _click(phi) $_view(phi)
1400	}
1401	drag {
1402	if {[array size _click] == 0} {
1403	Rotate click $x $y
1404	} else {
1405	set w [winfo width $itk_component(3dview)]
1406	set h [winfo height $itk_component(3dview)]
1407	if {$w <= 0 \|\| $h <= 0} {
1408	return
1409	}
1410
1411	if {[catch {
1412	# this fails sometimes for no apparent reason
1413	set dx [expr {double($x-$_click(x))/$w}]
1414	set dy [expr {double($y-$_click(y))/$h}]
1415	}]} {
1416	return
1417	}
1418
1419	#
1420	# Rotate the camera in 3D
1421	#
1422	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1423	# when psi is flipped around, theta moves backwards
1424	set dy [expr {-$dy}]
1425	}
1426	set theta [expr {$_view(theta) - $dy*180}]
1427	while {$theta < 0} { set theta [expr {$theta+180}] }
1428	while {$theta > 180} { set theta [expr {$theta-180}] }
1429
1430	if {abs($theta) >= 30 && abs($theta) <= 160} {
1431	set phi [expr {$_view(phi) - $dx*360}]
1432	while {$phi < 0} { set phi [expr {$phi+360}] }
1433	while {$phi > 360} { set phi [expr {$phi-360}] }
1434	set psi $_view(psi)
1435	} else {
1436	set phi $_view(phi)
1437	set psi [expr {$_view(psi) - $dx*360}]
1438	while {$psi < -180} { set psi [expr {$psi+360}] }
1439	while {$psi > 180} { set psi [expr {$psi-360}] }
1440	}
1441
1442	set _view(theta) $theta
1443	set _view(phi) $phi
1444	set _view(psi) $psi
1445	set xyz [Euler2XYZ $theta $phi $psi]
1446	set _settings($this-theta) $_view(theta)
1447	set _settings($this-phi) $_view(phi)
1448	set _settings($this-psi) $_view(psi)
1449	SendCmd "camera angle $xyz"
1450	set _click(x) $x
1451	set _click(y) $y
1452	}
1453	}
1454	release {
1455	Rotate drag $x $y
1456	$itk_component(3dview) configure -cursor ""
1457	catch {unset _click}
1458	}
1459	default {
1460	error "bad option \"$option\": should be click, drag, release"
1461	}
1462	}
1463	}
1464
1465	# ----------------------------------------------------------------------
1466	# USAGE: $this Pan click x y
1467	# $this Pan drag x y
1468	# $this Pan release x y
1469	#
1470	# Called automatically when the user clicks on one of the zoom
1471	# controls for this widget. Changes the zoom for the current view.
1472	# ----------------------------------------------------------------------
1473	itcl::body Rappture::FlowvisViewer::Pan {option x y} {
1474	# Experimental stuff
1475	set w [winfo width $itk_component(3dview)]
1476	set h [winfo height $itk_component(3dview)]
1477	if { $option == "set" } {
1478	set x [expr $x / double($w)]
1479	set y [expr $y / double($h)]
1480	set _view(pan-x) [expr $_view(pan-x) + $x]
1481	set _view(pan-y) [expr $_view(pan-y) + $y]
1482	PanCamera
1483	set _settings($this-pan-x) $_view(pan-x)
1484	set _settings($this-pan-y) $_view(pan-y)
1485	return
1486	}
1487	if { $option == "click" } {
1488	set _click(x) $x
1489	set _click(y) $y
1490	$itk_component(3dview) configure -cursor hand1
1491	}
1492	if { $option == "drag" \|\| $option == "release" } {
1493	set dx [expr ($_click(x) - $x)/double($w)]
1494	set dy [expr ($_click(y) - $y)/double($h)]
1495	set _click(x) $x
1496	set _click(y) $y
1497	set _view(pan-x) [expr $_view(pan-x) - $dx]
1498	set _view(pan-y) [expr $_view(pan-y) - $dy]
1499	PanCamera
1500	set _settings($this-pan-x) $_view(pan-x)
1501	set _settings($this-pan-y) $_view(pan-y)
1502	}
1503	if { $option == "release" } {
1504	$itk_component(3dview) configure -cursor ""
1505	}
1506	}
1507
1508
1509	# ----------------------------------------------------------------------
1510	# USAGE: Flow movie record\|stop\|play ?on\|off\|toggle?
1511	#
1512	# Called when the user clicks on the record, stop or play buttons
1513	# for flow visualization.
1514	# ----------------------------------------------------------------------
1515	itcl::body Rappture::FlowvisViewer::Flow {option args} {
1516	switch -- $option {
1517	movie {
1518	if {[llength $args] < 1 \|\| [llength $args] > 2} {
1519	error "wrong # args: should be \"Flow movie record\|stop\|play ?on\|off\|toggle?\""
1520	}
1521	set action [lindex $args 0]
1522	set op [lindex $args 1]
1523	if {$op == ""} { set op "on" }
1524
1525	set current [State $action]
1526	if {$op == "toggle"} {
1527	if {$current == "on"} {
1528	set op "off"
1529	} else {
1530	set op "on"
1531	}
1532	}
1533	set cmds ""
1534	switch -- $action {
1535	record {
1536	if { [$itk_component(rewind) cget -relief] != "sunken" } {
1537	$itk_component(rewind) configure -relief sunken
1538	$itk_component(stop) configure -relief raised
1539	$itk_component(play) configure -relief raised
1540	set inner $itk_component(settingsFrame)
1541	set frames [$inner.framecnt value]
1542	set _settings(nsteps) $frames
1543	set cmds "flow capture $frames"
1544	SendCmd $cmds
1545	}
1546	}
1547	stop {
1548	if { [$itk_component(stop) cget -relief] != "sunken" } {
1549	$itk_component(rewind) configure -relief raised
1550	$itk_component(stop) configure -relief sunken
1551	$itk_component(play) configure -relief raised
1552	_pause
1553	set cmds "flow reset"
1554	SendCmd $cmds
1555	}
1556	}
1557	play {
1558	if { [$itk_component(play) cget -relief] != "sunken" } {
1559	$itk_component(rewind) configure -relief raised
1560	$itk_component(stop) configure -relief raised
1561	$itk_component(play) configure \
1562	-image [Rappture::icon flow-pause] \
1563	-relief sunken
1564	bind $itk_component(play) <ButtonPress> \
1565	[itcl::code $this _pause]
1566	flow next
1567	}
1568	}
1569	default {
1570	error "bad option \"$option\": should be one of record\|stop\|play"
1571	}
1572
1573	}
1574	}
1575	default {
1576	error "bad option \"$option\": should be movie"
1577	}
1578	}
1579	}
1580
1581	# ----------------------------------------------------------------------
1582	# USAGE: Play
1583	#
1584	# ----------------------------------------------------------------------
1585	itcl::body Rappture::FlowvisViewer::Play {} {
1586	SendCmd "flow next"
1587	set delay [expr {int(ceil(pow($_settings(speed)/10.0+2,2.0)*15))}]
1588	$_dispatcher event -after $delay !play
1589	}
1590
1591	# ----------------------------------------------------------------------
1592	# USAGE: Pause
1593	#
1594	# Invoked when the user hits the "pause" button to stop playing the
1595	# current sequence of frames as a movie.
1596	# ----------------------------------------------------------------------
1597	itcl::body Rappture::FlowvisViewer::Pause {} {
1598	$_dispatcher cancel !play
1599
1600	# Toggle the button to "play" mode
1601	$itk_component(play) configure \
1602	-image [Rappture::icon flow-start] \
1603	-relief raised
1604	bind $itk_component(play) <ButtonPress> \
1605	[itcl::code $this Flow movie play toggle]
1606	}
1607
1608	# ----------------------------------------------------------------------
1609	# USAGE: FixSettings <what> ?<value>?
1610	#
1611	# Used internally to update rendering settings whenever parameters
1612	# change in the popup settings panel. Sends the new settings off
1613	# to the back end.
1614	# ----------------------------------------------------------------------
1615	itcl::body Rappture::FlowvisViewer::FixSettings {what {value ""}} {
1616	switch -- $what {
1617	light {
1618	if {[isconnected]} {
1619	set val $_settings($this-light)
1620	set sval [expr {0.1*$val}]
1621	SendCmd "volume shading diffuse $sval"
1622	set sval [expr {sqrt($val+1.0)}]
1623	SendCmd "volume shading specular $sval"
1624	}
1625	}
1626	transp {
1627	if {[isconnected]} {
1628	set val $_settings($this-transp)
1629	set sval [expr {0.2*$val+1}]
1630	SendCmd "volume shading opacity $sval"
1631	}
1632	}
1633	opacity {
1634	if {[isconnected] && $_activeTf != "" } {
1635	set val $_settings($this-opacity)
1636	set sval [expr { 0.01 * double($val) }]
1637	set tf $_activeTf
1638	set _settings($this-$tf-opacity) $sval
1639	updatetransferfuncs
1640	}
1641	}
1642
1643	thickness {
1644	if {[isconnected] && $_activeTf != "" } {
1645	set val $_settings($this-thickness)
1646	# Scale values between 0.00001 and 0.01000
1647	set sval [expr {0.0001*double($val)}]
1648	set tf $_activeTf
1649	set _settings($this-$tf-thickness) $sval
1650	updatetransferfuncs
1651	}
1652	}
1653	"outline" {
1654	if {[isconnected]} {
1655	SendCmd "volume outline state $_settings($this-outline)"
1656	}
1657	}
1658	"isosurface" {
1659	if {[isconnected]} {
1660	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1661	}
1662	}
1663	"grid" {
1664	if { [isconnected] } {
1665	SendCmd "grid visible $_settings($this-grid)"
1666	}
1667	}
1668	"axes" {
1669	if { [isconnected] } {
1670	SendCmd "axis visible $_settings($this-axes)"
1671	}
1672	}
1673	"legend" {
1674	if { $_settings($this-legend) } {
1675	blt::table $itk_component(plotarea) \
1676	0,0 $itk_component(3dview) -fill both \
1677	1,0 $itk_component(legend) -fill x
1678	blt::table configure $itk_component(plotarea) r1 -resize none
1679	} else {
1680	blt::table forget $itk_component(legend)
1681	}
1682	}
1683	"volume" {
1684	if { [isconnected] } {
1685	set vols [CurrentVolumeIds -cutplanes]
1686	SendCmd "volume data state $_settings($this-volume) $vols"
1687	}
1688	}
1689	"xcutplane" - "ycutplane" - "zcutplane" {
1690	set axis [string range $what 0 0]
1691	set bool $_settings($this-$what)
1692	if { [isconnected] } {
1693	set vols [CurrentVolumeIds -cutplanes]
1694	SendCmd "cutplane state $bool $axis $vols"
1695	}
1696	if { $bool } {
1697	$itk_component(${axis}CutScale) configure -state normal \
1698	-troughcolor white
1699	} else {
1700	$itk_component(${axis}CutScale) configure -state disabled \
1701	-troughcolor grey82
1702	}
1703	}
1704	default {
1705	error "don't know how to fix $what"
1706	}
1707	}
1708	}
1709
1710	# ----------------------------------------------------------------------
1711	# USAGE: ResizeLegend
1712	#
1713	# Used internally to update the legend area whenever it changes size
1714	# or when the field changes. Asks the server to send a new legend
1715	# for the current field.
1716	# ----------------------------------------------------------------------
1717	itcl::body Rappture::FlowvisViewer::ResizeLegend {} {
1718	set _resizeLegendPending 0
1719	set lineht [font metrics $itk_option(-font) -linespace]
1720	set w [expr {$_width-20}]
1721	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1722	if {$w > 0 && $h > 0 && "" != $_activeTf} {
1723	SendCmd "legend $_activeTf $w $h"
1724	} else {
1725	# Can't do this as this will remove the items associated with the
1726	# isomarkers.
1727
1728	#$itk_component(legend) delete all
1729	}
1730	}
1731
1732	#
1733	# NameTransferFunc --
1734	#
1735	# Creates a transfer function name based on the <style> settings in the
1736	# library run.xml file. This placeholder will be used later to create
1737	# and send the actual transfer function once the data info has been sent
1738	# to us by the render server. [We won't know the volume limits until the
1739	# server parses the 3D data and sends back the limits via ReceiveData.]
1740	#
1741	# FIXME: The current way we generate transfer-function names completely
1742	# ignores the -markers option. The problem is that we are forced
1743	# to compute the name from an increasing complex set of values:
1744	# color, levels, marker, opacity. I think we're stuck doing it
1745	# now.
1746	#
1747	itcl::body Rappture::FlowvisViewer::NameTransferFunc { dataobj comp } {
1748	array set style {
1749	-color rainbow
1750	-levels 6
1751	-opacity 1.0
1752	}
1753	array set style [lindex [$dataobj components -style $comp] 0]
1754	set tf "$style(-color):$style(-levels):$style(-opacity)"
1755	lappend _obj2style($dataobj-$comp) $tf
1756	lappend _style2objs($tf) $dataobj $comp
1757	return $tf
1758	}
1759
1760	#
1761	# ComputeTransferFunc --
1762	#
1763	# Computes and sends the transfer function to the render server. It's
1764	# assumed that the volume data limits are known and that the global
1765	# transfer-functions slider values have be setup. Both parts are
1766	# needed to compute the relative value (location) of the marker, and
1767	# the alpha map of the transfer function.
1768	#
1769	itcl::body Rappture::FlowvisViewer::ComputeTransferFunc { tf } {
1770	array set style {
1771	-color rainbow
1772	-levels 6
1773	-opacity 1.0
1774	}
1775	set dataobj ""; set comp ""
1776	foreach {dataobj comp} $_style2objs($tf) break
1777	if { $dataobj == "" } {
1778	return 0
1779	}
1780	array set style [lindex [$dataobj components -style $comp] 0]
1781
1782
1783	# We have to parse the style attributes for a volume using this
1784	# transfer-function once. This sets up the initial isomarkers for the
1785	# transfer function. The user may add/delete markers, so we have to
1786	# maintain a list of markers for each transfer-function. We use the one
1787	# of the volumes (the first in the list) using the transfer-function as a
1788	# reference.
1789	#
1790	# FIXME: The current way we generate transfer-function names completely
1791	# ignores the -markers option. The problem is that we are forced
1792	# to compute the name from an increasing complex set of values:
1793	# color, levels, marker, opacity. I think the cow's out of the
1794	# barn on this one.
1795
1796	if { ![info exists _isomarkers($tf)] } {
1797	# Have to defer creation of isomarkers until we have data limits
1798	if { [info exists style(-markers)] } {
1799	ParseMarkersOption $tf $style(-markers)
1800	} else {
1801	ParseLevelsOption $tf $style(-levels)
1802	}
1803	}
1804	if {$style(-color) == "rainbow"} {
1805	set style(-color) "white:yellow:green:cyan:blue:magenta"
1806	}
1807	set clist [split $style(-color) :]
1808	set cmap "0.0 [Color2RGB white] "
1809	for {set i 0} {$i < [llength $clist]} {incr i} {
1810	set x [expr {double($i+1)/([llength $clist]+1)}]
1811	set color [lindex $clist $i]
1812	append cmap "$x [Color2RGB $color] "
1813	}
1814	append cmap "1.0 [Color2RGB $color]"
1815
1816	set tag $this-$tf
1817	if { ![info exists _settings($tag-opacity)] } {
1818	set _settings($tag-opacity) $style(-opacity)
1819	}
1820	set max $_settings($tag-opacity)
1821
1822	set isovalues {}
1823	foreach m $_isomarkers($tf) {
1824	lappend isovalues [$m relval]
1825	}
1826	# Sort the isovalues
1827	set isovalues [lsort -real $isovalues]
1828
1829	if { ![info exists _settings($tag-thickness)]} {
1830	set _settings($tag-thickness) 0.05
1831	}
1832	set delta $_settings($tag-thickness)
1833
1834	set first [lindex $isovalues 0]
1835	set last [lindex $isovalues end]
1836	set wmap ""
1837	if { $first == "" \|\| $first != 0.0 } {
1838	lappend wmap 0.0 0.0
1839	}
1840	foreach x $isovalues {
1841	set x1 [expr {$x-$delta-0.00001}]
1842	set x2 [expr {$x-$delta}]
1843	set x3 [expr {$x+$delta}]
1844	set x4 [expr {$x+$delta+0.00001}]
1845	if { $x1 < 0.0 } {
1846	set x1 0.0
1847	} elseif { $x1 > 1.0 } {
1848	set x1 1.0
1849	}
1850	if { $x2 < 0.0 } {
1851	set x2 0.0
1852	} elseif { $x2 > 1.0 } {
1853	set x2 1.0
1854	}
1855	if { $x3 < 0.0 } {
1856	set x3 0.0
1857	} elseif { $x3 > 1.0 } {
1858	set x3 1.0
1859	}
1860	if { $x4 < 0.0 } {
1861	set x4 0.0
1862	} elseif { $x4 > 1.0 } {
1863	set x4 1.0
1864	}
1865	# add spikes in the middle
1866	lappend wmap $x1 0.0
1867	lappend wmap $x2 $max
1868	lappend wmap $x3 $max
1869	lappend wmap $x4 0.0
1870	}
1871	if { $last == "" \|\| $last != 1.0 } {
1872	lappend wmap 1.0 0.0
1873	}
1874	SendBytes "transfunc define $tf { $cmap } { $wmap }\n"
1875	return [SendBytes "$dataobj-$comp configure -transferfunction $tf\n"]
1876	}
1877
1878	# ----------------------------------------------------------------------
1879	# CONFIGURATION OPTION: -plotbackground
1880	# ----------------------------------------------------------------------
1881	itcl::configbody Rappture::FlowvisViewer::plotbackground {
1882	if { [isconnected] } {
1883	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1884	#fix this!
1885	#SendCmd "color background $r $g $b"
1886	}
1887	}
1888
1889	# ----------------------------------------------------------------------
1890	# CONFIGURATION OPTION: -plotforeground
1891	# ----------------------------------------------------------------------
1892	itcl::configbody Rappture::FlowvisViewer::plotforeground {
1893	if { [isconnected] } {
1894	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1895	#fix this!
1896	#SendCmd "color background $r $g $b"
1897	}
1898	}
1899
1900	# ----------------------------------------------------------------------
1901	# CONFIGURATION OPTION: -plotoutline
1902	# ----------------------------------------------------------------------
1903	itcl::configbody Rappture::FlowvisViewer::plotoutline {
1904	# Must check if we are connected because this routine is called from the
1905	# class body when the -plotoutline itk_option is defined. At that point
1906	# the FlowvisViewer class constructor hasn't been called, so we can't
1907	# start sending commands to visualization server.
1908	if { [isconnected] } {
1909	if {"" == $itk_option(-plotoutline)} {
1910	SendCmd "volume outline state off"
1911	} else {
1912	SendCmd "volume outline state on"
1913	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1914	}
1915	}
1916	}
1917
1918	#
1919	# The -levels option takes a single value that represents the number
1920	# of evenly distributed markers based on the current data range. Each
1921	# marker is a relative value from 0.0 to 1.0.
1922	#
1923	itcl::body Rappture::FlowvisViewer::ParseLevelsOption { tf levels } {
1924	set c $itk_component(legend)
1925	regsub -all "," $levels " " levels
1926	if {[string is int $levels]} {
1927	for {set i 1} { $i <= $levels } {incr i} {
1928	set x [expr {double($i)/($levels+1)}]
1929	set m [Rappture::IsoMarker \#auto $c $this $tf]
1930	$m relval $x
1931	lappend _isomarkers($tf) $m
1932	}
1933	} else {
1934	foreach x $levels {
1935	set m [Rappture::IsoMarker \#auto $c $this $tf]
1936	$m relval $x
1937	lappend _isomarkers($tf) $m
1938	}
1939	}
1940	}
1941
1942	#
1943	# The -markers option takes a list of zero or more values (the values
1944	# may be separated either by spaces or commas) that have the following
1945	# format:
1946	#
1947	# N% Percent of current total data range. Converted to
1948	# to a relative value between 0.0 and 1.0.
1949	# N Absolute value of marker. If the marker is outside of
1950	# the current range, it will be displayed on the outer
1951	# edge of the legends, but it range it represents will
1952	# not be seen.
1953	#
1954	itcl::body Rappture::FlowvisViewer::ParseMarkersOption { tf markers } {
1955	set c $itk_component(legend)
1956	regsub -all "," $markers " " markers
1957	foreach marker $markers {
1958	set n [scan $marker "%g%s" value suffix]
1959	if { $n == 2 && $suffix == "%" } {
1960	# ${n}% : Set relative value.
1961	set value [expr {$value * 0.01}]
1962	set m [Rappture::IsoMarker \#auto $c $this $tf]
1963	$m relval $value
1964	lappend _isomarkers($tf) $m
1965	} else {
1966	# ${n} : Set absolute value.
1967	set m [Rappture::IsoMarker \#auto $c $this $tf]
1968	$m absval $value
1969	lappend _isomarkers($tf) $m
1970	}
1971	}
1972	}
1973
1974	# ----------------------------------------------------------------------
1975	# USAGE: UndateTransferFuncs
1976	# ----------------------------------------------------------------------
1977	itcl::body Rappture::FlowvisViewer::updatetransferfuncs {} {
1978	$_dispatcher event -idle !send_transfunc
1979	}
1980
1981	itcl::body Rappture::FlowvisViewer::AddIsoMarker { x y } {
1982	if { $_activeTf == "" } {
1983	error "active transfer function isn't set"
1984	}
1985	set tf $_activeTf
1986	set c $itk_component(legend)
1987	set m [Rappture::IsoMarker \#auto $c $this $tf]
1988	set w [winfo width $c]
1989	$m relval [expr {double($x-10)/($w-20)}]
1990	lappend _isomarkers($tf) $m
1991	updatetransferfuncs
1992	return 1
1993	}
1994
1995	itcl::body Rappture::FlowvisViewer::rmdupmarker { marker x } {
1996	set tf [$marker transferfunc]
1997	set bool 0
1998	if { [info exists _isomarkers($tf)] } {
1999	set list {}
2000	set marker [namespace tail $marker]
2001	foreach m $_isomarkers($tf) {
2002	set sx [$m screenpos]
2003	if { $m != $marker } {
2004	if { $x >= ($sx-3) && $x <= ($sx+3) } {
2005	$marker relval [$m relval]
2006	itcl::delete object $m
2007	bell
2008	set bool 1
2009	continue
2010	}
2011	}
2012	lappend list $m
2013	}
2014	set _isomarkers($tf) $list
2015	updatetransferfuncs
2016	}
2017	return $bool
2018	}
2019
2020	itcl::body Rappture::FlowvisViewer::overmarker { marker x } {
2021	set tf [$marker transferfunc]
2022	if { [info exists _isomarkers($tf)] } {
2023	set marker [namespace tail $marker]
2024	foreach m $_isomarkers($tf) {
2025	set sx [$m screenpos]
2026	if { $m != $marker } {
2027	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
2028	$m activate $bool
2029	}
2030	}
2031	}
2032	return ""
2033	}
2034
2035	itcl::body Rappture::FlowvisViewer::limits { tf } {
2036	set _limits(min) 0.0
2037	set _limits(max) 1.0
2038	if { ![info exists _style2objs($tf)] } {
2039	return [array get _limits]
2040	}
2041	set min ""; set max ""
2042	foreach {dataobj comp} $_style2objs($tf) {
2043	if { ![info exists _obj2id($dataobj-$comp)] } {
2044	continue
2045	}
2046	set ivol $_obj2id($dataobj-$comp)
2047	if { ![info exists _limits($ivol-min)] } {
2048	continue
2049	}
2050	if { $min == "" \|\| $min > $_limits($ivol-min) } {
2051	set min $_limits($ivol-min)
2052	}
2053	if { $max == "" \|\| $max < $_limits($ivol-max) } {
2054	set max $_limits($ivol-max)
2055	}
2056	}
2057	if { $min != "" } {
2058	set _limits(min) $min
2059	}
2060	if { $max != "" } {
2061	set _limits(max) $max
2062	}
2063	return [array get _limits]
2064	}
2065
2066
2067
2068	itcl::body Rappture::FlowvisViewer::BuildViewTab {} {
2069	foreach { key value } {
2070	grid 0
2071	axes 0
2072	outline 1
2073	volume 1
2074	legend 1
2075	particles 1
2076	lic 1
2077	} {
2078	set _settings($this-$key) $value
2079	}
2080
2081	set fg [option get $itk_component(hull) font Font]
2082	#set bfg [option get $itk_component(hull) boldFont Font]
2083
2084	set inner [$itk_component(main) insert end \
2085	-title "View Settings" \
2086	-icon [Rappture::icon wrench]]
2087	$inner configure -borderwidth 4
2088
2089	set ::Rappture::FlowvisViewer::_settings($this-isosurface) 0
2090	checkbutton $inner.isosurface \
2091	-text "Isosurface shading" \
2092	-variable [itcl::scope _settings($this-isosurface)] \
2093	-command [itcl::code $this FixSettings isosurface] \
2094	-font "Arial 9"
2095
2096	checkbutton $inner.axes \
2097	-text "Axes" \
2098	-variable [itcl::scope _settings($this-axes)] \
2099	-command [itcl::code $this FixSettings axes] \
2100	-font "Arial 9"
2101
2102	checkbutton $inner.grid \
2103	-text "Grid" \
2104	-variable [itcl::scope _settings($this-grid)] \
2105	-command [itcl::code $this FixSettings grid] \
2106	-font "Arial 9"
2107
2108	checkbutton $inner.outline \
2109	-text "Outline" \
2110	-variable [itcl::scope _settings($this-outline)] \
2111	-command [itcl::code $this FixSettings outline] \
2112	-font "Arial 9"
2113
2114	checkbutton $inner.legend \
2115	-text "Legend" \
2116	-variable [itcl::scope _settings($this-legend)] \
2117	-command [itcl::code $this FixSettings legend] \
2118	-font "Arial 9"
2119
2120	checkbutton $inner.volume \
2121	-text "Volume" \
2122	-variable [itcl::scope _settings($this-volume)] \
2123	-command [itcl::code $this FixSettings volume] \
2124	-font "Arial 9"
2125
2126	checkbutton $inner.particles \
2127	-text "Particles" \
2128	-variable [itcl::scope _settings($this-particles)] \
2129	-command [itcl::code $this FixSettings particles] \
2130	-font "Arial 9"
2131
2132	checkbutton $inner.lic \
2133	-text "Lic" \
2134	-variable [itcl::scope _settings($this-lic)] \
2135	-command [itcl::code $this FixSettings lic] \
2136	-font "Arial 9"
2137
2138	frame $inner.frame
2139
2140	blt::table $inner \
2141	0,0 $inner.axes -columnspan 2 -anchor w \
2142	1,0 $inner.grid -columnspan 2 -anchor w \
2143	2,0 $inner.outline -columnspan 2 -anchor w \
2144	3,0 $inner.volume -columnspan 2 -anchor w \
2145	4,0 $inner.legend -columnspan 2 -anchor w
2146
2147	bind $inner <Map> [itcl::code $this GetFlowInfo $inner]
2148
2149	blt::table configure $inner r* -resize none
2150	blt::table configure $inner r5 -resize expand
2151	}
2152
2153	itcl::body Rappture::FlowvisViewer::BuildVolumeTab {} {
2154	foreach { key value } {
2155	light 40
2156	transp 50
2157	opacity 100
2158	thickness 350
2159	} {
2160	set _settings($this-$key) $value
2161	}
2162
2163	set inner [$itk_component(main) insert end \
2164	-title "Volume Settings" \
2165	-icon [Rappture::icon volume-on]]
2166	$inner configure -borderwidth 4
2167
2168	set fg [option get $itk_component(hull) font Font]
2169	#set bfg [option get $itk_component(hull) boldFont Font]
2170
2171	label $inner.dim -text "Dim" -font $fg
2172	::scale $inner.light -from 0 -to 100 -orient horizontal \
2173	-variable [itcl::scope _settings($this-light)] \
2174	-width 10 \
2175	-showvalue off -command [itcl::code $this FixSettings light]
2176	label $inner.bright -text "Bright" -font $fg
2177
2178	label $inner.fog -text "Fog" -font $fg
2179	::scale $inner.transp -from 0 -to 100 -orient horizontal \
2180	-variable [itcl::scope _settings($this-transp)] \
2181	-width 10 \
2182	-showvalue off -command [itcl::code $this FixSettings transp]
2183	label $inner.plastic -text "Plastic" -font $fg
2184
2185	label $inner.clear -text "Clear" -font $fg
2186	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
2187	-variable [itcl::scope _settings($this-opacity)] \
2188	-width 10 \
2189	-showvalue off -command [itcl::code $this FixSettings opacity]
2190	label $inner.opaque -text "Opaque" -font $fg
2191
2192	label $inner.thin -text "Thin" -font $fg
2193	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
2194	-variable [itcl::scope _settings($this-thickness)] \
2195	-width 10 \
2196	-showvalue off -command [itcl::code $this FixSettings thickness]
2197	label $inner.thick -text "Thick" -font $fg
2198
2199	blt::table $inner \
2200	0,0 $inner.dim -anchor e -pady 2 \
2201	0,1 $inner.light -columnspan 2 -pady 2 \
2202	0,3 $inner.bright -anchor w -pady 2 \
2203	1,0 $inner.fog -anchor e -pady 2 \
2204	1,1 $inner.transp -columnspan 2 -pady 2 \
2205	1,3 $inner.plastic -anchor w -pady 2 \
2206	2,0 $inner.clear -anchor e -pady 2 \
2207	2,1 $inner.opacity -columnspan 2 -pady 2 \
2208	2,3 $inner.opaque -anchor w -pady 2 \
2209	3,0 $inner.thin -anchor e -pady 2 \
2210	3,1 $inner.thickness -columnspan 2 -pady 2 \
2211	3,3 $inner.thick -anchor w -pady 2
2212
2213	blt::table configure $inner c0 c1 c3 r* -resize none
2214	blt::table configure $inner r6 -resize expand
2215	}
2216
2217	itcl::body Rappture::FlowvisViewer::BuildCutplanesTab {} {
2218	set inner [$itk_component(main) insert end \
2219	-title "Cutplane Settings" \
2220	-icon [Rappture::icon cutbutton]]
2221	$inner configure -borderwidth 4
2222
2223	# X-value slicer...
2224	itk_component add xCutButton {
2225	Rappture::PushButton $inner.xbutton \
2226	-onimage [Rappture::icon x-cutplane-on] \
2227	-offimage [Rappture::icon x-cutplane-off] \
2228	-command [itcl::code $this FixSettings xcutplane] \
2229	-variable [itcl::scope _settings($this-xcutplane)]
2230	}
2231	Rappture::Tooltip::for $itk_component(xCutButton) \
2232	"Toggle the X cut plane on/off"
2233
2234	itk_component add xCutScale {
2235	::scale $inner.xval -from 100 -to 0 \
2236	-width 10 -orient vertical -showvalue off \
2237	-borderwidth 1 -highlightthickness 0 \
2238	-command [itcl::code $this Slice move x] \
2239	-variable [itcl::scope _settings($this-xcutposition)]
2240	} {
2241	usual
2242	ignore -borderwidth -highlightthickness
2243	}
2244	# Set the default cutplane value before disabling the scale.
2245	$itk_component(xCutScale) set 50
2246	$itk_component(xCutScale) configure -state disabled
2247	Rappture::Tooltip::for $itk_component(xCutScale) \
2248	"@[itcl::code $this SlicerTip x]"
2249
2250	# Y-value slicer...
2251	itk_component add yCutButton {
2252	Rappture::PushButton $inner.ybutton \
2253	-onimage [Rappture::icon y-cutplane-on] \
2254	-offimage [Rappture::icon y-cutplane-off] \
2255	-command [itcl::code $this FixSettings ycutplane] \
2256	-variable [itcl::scope _settings($this-ycutplane)]
2257	}
2258	Rappture::Tooltip::for $itk_component(yCutButton) \
2259	"Toggle the Y cut plane on/off"
2260
2261	itk_component add yCutScale {
2262	::scale $inner.yval -from 100 -to 0 \
2263	-width 10 -orient vertical -showvalue off \
2264	-borderwidth 1 -highlightthickness 0 \
2265	-command [itcl::code $this Slice move y] \
2266	-variable [itcl::scope _settings($this-ycutposition)]
2267	} {
2268	usual
2269	ignore -borderwidth -highlightthickness
2270	}
2271	Rappture::Tooltip::for $itk_component(yCutScale) \
2272	"@[itcl::code $this SlicerTip y]"
2273	# Set the default cutplane value before disabling the scale.
2274	$itk_component(yCutScale) set 50
2275	$itk_component(yCutScale) configure -state disabled
2276
2277	# Z-value slicer...
2278	itk_component add zCutButton {
2279	Rappture::PushButton $inner.zbutton \
2280	-onimage [Rappture::icon z-cutplane-on] \
2281	-offimage [Rappture::icon z-cutplane-off] \
2282	-command [itcl::code $this FixSettings zcutplane] \
2283	-variable [itcl::scope _settings($this-zcutplane)]
2284	}
2285	Rappture::Tooltip::for $itk_component(zCutButton) \
2286	"Toggle the Z cut plane on/off"
2287
2288	itk_component add zCutScale {
2289	::scale $inner.zval -from 100 -to 0 \
2290	-width 10 -orient vertical -showvalue off \
2291	-borderwidth 1 -highlightthickness 0 \
2292	-command [itcl::code $this Slice move z] \
2293	-variable [itcl::scope _settings($this-zcutposition)]
2294	} {
2295	usual
2296	ignore -borderwidth -highlightthickness
2297	}
2298	$itk_component(zCutScale) set 50
2299	$itk_component(zCutScale) configure -state disabled
2300	#$itk_component(zCutScale) configure -state disabled
2301	Rappture::Tooltip::for $itk_component(zCutScale) \
2302	"@[itcl::code $this SlicerTip z]"
2303
2304	blt::table $inner \
2305	1,1 $itk_component(xCutButton) \
2306	1,2 $itk_component(yCutButton) \
2307	1,3 $itk_component(zCutButton) \
2308	0,1 $itk_component(xCutScale) \
2309	0,2 $itk_component(yCutScale) \
2310	0,3 $itk_component(zCutScale) \
2311
2312	blt::table configure $inner r0 r1 c* -resize none
2313	blt::table configure $inner r2 c4 -resize expand
2314	blt::table configure $inner c0 -width 2
2315	blt::table configure $inner c1 c2 c3 -padx 2
2316	}
2317
2318	itcl::body Rappture::FlowvisViewer::BuildCameraTab {} {
2319	set inner [$itk_component(main) insert end \
2320	-title "Camera Settings" \
2321	-icon [Rappture::icon camera]]
2322	$inner configure -borderwidth 4
2323
2324	set labels { phi theta psi pan-x pan-y zoom }
2325	set row 0
2326	foreach tag $labels {
2327	label $inner.${tag}label -text $tag -font "Arial 9"
2328	entry $inner.${tag} -font "Arial 9" -bg white \
2329	-textvariable [itcl::scope _settings($this-$tag)]
2330	bind $inner.${tag} <KeyPress-Return> \
2331	[itcl::code $this camera set ${tag}]
2332	blt::table $inner \
2333	$row,0 $inner.${tag}label -anchor e -pady 2 \
2334	$row,1 $inner.${tag} -anchor w -pady 2
2335	blt::table configure $inner r$row -resize none
2336	incr row
2337	}
2338	blt::table configure $inner c0 c1 -resize none
2339	blt::table configure $inner c2 -resize expand
2340	blt::table configure $inner r$row -resize expand
2341	}
2342
2343	itcl::body Rappture::FlowvisViewer::GetFlowInfo { w } {
2344	set flowobj ""
2345	foreach key [array names _obj2flow] {
2346	set flowobj $_obj2flow($key)
2347	break
2348	}
2349	if { $flowobj == "" } {
2350	return
2351	}
2352	if { [winfo exists $w.frame] } {
2353	destroy $w.frame
2354	}
2355	set inner [frame $w.frame]
2356	blt::table $w \
2357	5,0 $inner -fill both -columnspan 2 -anchor nw
2358	array set hints [$flowobj hints]
2359	checkbutton $inner.showstreams -text "Streams Plane" \
2360	-variable [itcl::scope _settings($this-streams)] \
2361	-command [itcl::code $this streams $key $hints(name)] \
2362	-font "Arial 9"
2363	Rappture::Tooltip::for $inner.showstreams $hints(description)
2364	label $inner.particles -text "Particles" -font "Arial 9 bold"
2365	label $inner.boxes -text "Boxes" -font "Arial 9 bold"
2366
2367	blt::table $inner \
2368	1,0 $inner.showstreams -anchor w
2369	blt::table configure $inner c0 -resize none
2370	blt::table configure $inner c1 -resize expand
2371
2372	set row 2
2373	set particles [$flowobj particles]
2374	if { [llength $particles] > 0 } {
2375	blt::table $inner $row,0 $inner.particles -anchor w
2376	incr row
2377	}
2378	foreach part $particles {
2379	array unset info
2380	array set info $part
2381	set name $info(name)
2382	if { ![info exists _settings($this-particles-$name)] } {
2383	set _settings($this-particles-$name) $info(hide)
2384	}
2385	checkbutton $inner.part$row -text $info(label) \
2386	-variable [itcl::scope _settings($this-particles-$name)] \
2387	-onvalue 0 -offvalue 1 \
2388	-command [itcl::code $this particles $key $name] \
2389	-font "Arial 9"
2390	Rappture::Tooltip::for $inner.part$row $info(description)
2391	blt::table $inner $row,0 $inner.part$row -anchor w
2392	if { !$_settings($this-particles-$name) } {
2393	$inner.part$row select
2394	}
2395	incr row
2396	}
2397	set boxes [$flowobj boxes]
2398	if { [llength $boxes] > 0 } {
2399	blt::table $inner $row,0 $inner.boxes -anchor w
2400	incr row
2401	}
2402	foreach box $boxes {
2403	array unset info
2404	array set info $box
2405	set name $info(name)
2406	if { ![info exists _settings($this-box-$name)] } {
2407	set _settings($this-box-$name) $info(hide)
2408	}
2409	checkbutton $inner.box$row -text $info(label) \
2410	-variable [itcl::scope _settings($this-box-$name)] \
2411	-onvalue 0 -offvalue 1 \
2412	-command [itcl::code $this box $key $name] \
2413	-font "Arial 9"
2414	Rappture::Tooltip::for $inner.box$row $info(description)
2415	blt::table $inner $row,0 $inner.box$row -anchor w
2416	if { !$_settings($this-box-$name) } {
2417	$inner.box$row select
2418	}
2419	incr row
2420	}
2421	blt::table configure $inner r* -resize none
2422	blt::table configure $inner r$row -resize expand
2423	blt::table configure $inner c3 -resize expand
2424	event generate [winfo parent [winfo parent $w]] <Configure>
2425	}
2426
2427	itcl::body Rappture::FlowvisViewer::particles { tag name } {
2428	set bool $_settings($this-particles-$name)
2429	SendCmd "$tag particles configure {$name} -hide $bool"
2430	}
2431
2432	itcl::body Rappture::FlowvisViewer::box { tag name } {
2433	set bool $_settings($this-box-$name)
2434	SendCmd "$tag box configure {$name} -hide $bool"
2435	}
2436
2437	itcl::body Rappture::FlowvisViewer::streams { tag name } {
2438	set bool $_settings($this-streams)
2439	SendCmd "$tag configure -slice $bool"
2440	}
2441
2442	# ----------------------------------------------------------------------
2443	# USAGE: Slice move x\|y\|z <newval>
2444	#
2445	# Called automatically when the user drags the slider to move the
2446	# cut plane that slices 3D data. Gets the current value from the
2447	# slider and moves the cut plane to the appropriate point in the
2448	# data set.
2449	# ----------------------------------------------------------------------
2450	itcl::body Rappture::FlowvisViewer::Slice {option args} {
2451	switch -- $option {
2452	move {
2453	if {[llength $args] != 2} {
2454	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2455	}
2456	set axis [lindex $args 0]
2457	set newval [lindex $args 1]
2458	set newpos [expr {0.01*$newval}]
2459
2460	# show the current value in the readout
2461
2462	set ids [CurrentVolumeIds -cutplanes]
2463	SendCmd "cutplane position $newpos $axis $ids"
2464	}
2465	default {
2466	error "bad option \"$option\": should be axis, move, or volume"
2467	}
2468	}
2469	}
2470
2471	# ----------------------------------------------------------------------
2472	# USAGE: SlicerTip <axis>
2473	#
2474	# Used internally to generate a tooltip for the x/y/z slicer controls.
2475	# Returns a message that includes the current slicer value.
2476	# ----------------------------------------------------------------------
2477	itcl::body Rappture::FlowvisViewer::SlicerTip {axis} {
2478	set val [$itk_component(${axis}CutScale) get]
2479	# set val [expr {0.01*($val-50)
2480	# *($_limits(${axis}max)-$_limits(${axis}min))
2481	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2482	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2483	}
2484
2485
2486	itcl::body Rappture::FlowvisViewer::DoResize {} {
2487	SendCmd "screen $_width $_height"
2488	set _resizePending 0
2489	}
2490
2491	itcl::body Rappture::FlowvisViewer::EventuallyResize { w h } {
2492	set _width $w
2493	set _height $h
2494	if { !$_resizePending } {
2495	$_dispatcher event -idle !resize
2496	set _resizePending 1
2497	}
2498	}
2499
2500	itcl::body Rappture::FlowvisViewer::EventuallyResizeLegend {} {
2501	if { !$_resizeLegendPending } {
2502	$_dispatcher event -idle !legend
2503	set _resizeLegendPending 1
2504	}
2505	}
2506
2507	# camera --
2508	itcl::body Rappture::FlowvisViewer::camera {option args} {
2509	switch -- $option {
2510	"show" {
2511	puts [array get _view]
2512	}
2513	"set" {
2514	set who [lindex $args 0]
2515	set x $_settings($this-$who)
2516	set code [catch { string is double $x } result]
2517	if { $code != 0 \|\| !$result } {
2518	set _settings($this-$who) $_view($who)
2519	return
2520	}
2521	switch -- $who {
2522	"pan-x" - "pan-y" {
2523	set _view($who) $_settings($this-$who)
2524	PanCamera
2525	}
2526	"phi" - "theta" - "psi" {
2527	set _view($who) $_settings($this-$who)
2528	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
2529	SendCmd "camera angle $xyz"
2530	}
2531	"zoom" {
2532	set _view($who) $_settings($this-$who)
2533	SendCmd "camera zoom $_view(zoom)"
2534	}
2535	}
2536	}
2537	}
2538	}
2539
2540	itcl::body Rappture::FlowvisViewer::FlowCmd { dataobj comp nbytes extents } {
2541	set tag "$dataobj-$comp"
2542	if { ![info exists _obj2flow($tag)] } {
2543	append cmd "flow add $tag\n"
2544	append cmd "$tag data follows $nbytes $extents\n"
2545	return $cmd
2546	}
2547	set flowobj $_obj2flow($tag)
2548	if { $flowobj == "" } {
2549	puts stderr "no flowobj"
2550	return ""
2551	}
2552	set cmd {}
2553	append cmd "if {\[flow exists $tag\]} {flow delete $tag}\n"
2554	array set info [$flowobj hints]
2555	append cmd "flow add $tag -position $info(position) -axis $info(axis) "
2556	append cmd "-volume $info(volume) -outline $info(outline) "
2557	append cmd "-slice $info(streams)\n"
2558	foreach part [$flowobj particles] {
2559	array unset info
2560	array set info $part
2561	set color [Color2RGB $info(color)]
2562	append cmd "$tag particles add $info(name) -position $info(position) "
2563	append cmd "-axis $info(axis) -color {$color}\n"
2564	}
2565	foreach box [$flowobj boxes] {
2566	array unset info
2567	set info(corner1) ""
2568	set info(corner2) ""
2569	array set info $box
2570	if { $info(corner1) == "" \|\| $info(corner2) == "" } {
2571	continue
2572	}
2573	set color [Color2RGB $info(color)]
2574	append cmd "$tag box add $info(name) -color {$color} "
2575	append cmd "-hide $info(hide) "
2576	append cmd "-corner1 {$info(corner1)} -corner2 {$info(corner2)}\n"
2577	}
2578	append cmd "$tag data follows $nbytes $extents\n"
2579	return $cmd
2580	}
2581
2582
2583	#
2584	# flow --
2585	#
2586	# Called when the user clicks on the stop or play buttons
2587	# for flow visualization.
2588	#
2589	# $this flow play
2590	# $this flow stop
2591	# $this flow toggle
2592	# $this flow reset
2593	# $this flow pause
2594	# $this flow next
2595	#
2596	itcl::body Rappture::FlowvisViewer::flow { args } {
2597	set option [lindex $args 0]
2598	switch -- $option {
2599	"speed" {
2600	set speed [$itk_component(speed) value]
2601	set _flow(delay) [expr int(round(500.0/$speed))]
2602	}
2603	"duration" {
2604	set value $_settings($this-duration)
2605	set pattern1 {^ ([0-9]+):([0-5][0-9]) $}
2606	set pattern2 {^ :([0-5][0-9]) $}
2607	if { [string is int $value] } {
2608	set _flow(duration) [expr $value * 1000]
2609	} elseif { [regexp $pattern1 $value match mins secs] } {
2610	set _flow(duration) [expr (($mins * 60) + $secs) * 1000]
2611	} elseif { [regexp $pattern2 $value match secs] } {
2612	set _flow(duration) [expr $secs * 1000]
2613	} else {
2614	bell
2615	return
2616	}
2617	if { $_flow(duration) > 600000 } {
2618	set _flow(duration) 600000
2619	}
2620	set min [expr $_flow(duration) / 60000]
2621	set sec [expr ($_flow(duration) - ($min*60000)) / 1000]
2622	set _settings($this-duration) [format %02d:%02d $min $sec]
2623	$itk_component(frame) configure -to $_flow(duration)
2624	}
2625	"off" {
2626	set _flow(state) 0
2627	$_dispatcher cancel !play
2628	$itk_component(play) deselect
2629	}
2630	"on" {
2631	flow speed
2632	flow duration
2633	set _flow(state) 1
2634	set _flow(time) 0
2635	$itk_component(play) select
2636	}
2637	"stop" {
2638	if { $_flow(state) } {
2639	flow off
2640	flow reset
2641	}
2642	}
2643	"pause" {
2644	if { $_flow(state) } {
2645	flow off
2646	}
2647	}
2648	"play" {
2649	# If the flow is currently off, then restart it.
2650	if { !$_flow(state) } {
2651	flow on
2652	# If we're at the end of the flow, reset the flow.
2653	incr _flow(time) $_flow(delay)
2654	if { $_flow(time) >= $_flow(duration) } {
2655	set _settings($this-step) 1
2656	SendCmd "flow reset"
2657	}
2658	flow next
2659	}
2660	}
2661	"toggle" {
2662	if { $_settings($this-play) } {
2663	flow play
2664	} else {
2665	flow pause
2666	}
2667	}
2668	"reset" {
2669	set _flow(time) 0
2670	set _settings($this-currenttime) 0
2671	SendCmd "flow reset"
2672	if { !$_flow(state) } {
2673	SendCmd "flow next"
2674	}
2675	}
2676	"next" {
2677	set w $itk_component(3dview)
2678	while { $w != "" } {
2679	if { ![winfo ismapped $w] } {
2680	flow stop
2681	puts stderr "$w isn't mapped"
2682	return
2683	}
2684	set w [winfo parent $w]
2685	if { [winfo toplevel $w] == $w } {
2686	break
2687	}
2688	}
2689	incr _flow(time) $_flow(delay)
2690	if { $_flow(time) >= $_flow(duration) } {
2691	if { !$_settings($this-loop) } {
2692	flow off
2693	return
2694	}
2695	flow reset
2696	} else {
2697	SendCmd "flow next"
2698	}
2699	set _settings($this-currenttime) $_flow(time)
2700	$_dispatcher event -after $_flow(delay) !play
2701	}
2702	default {
2703	error "bad option \"$option\": should be play, stop, toggle, or reset."
2704	}
2705	}
2706	}
2707
2708	itcl::body Rappture::FlowvisViewer::WaitIcon { option widget } {
2709	switch -- $option {
2710	"start" {
2711	$_dispatcher dispatch $this !waiticon \
2712	"[itcl::code $this WaitIcon "next" $widget] ; list"
2713	set _icon 0
2714	$widget configure -image [Rappture::icon bigroller${_icon}]
2715	$_dispatcher event -after 100 !waiticon
2716	}
2717	"next" {
2718	incr _icon
2719	if { $_icon >= 8 } {
2720	set _icon 0
2721	}
2722	$widget configure -image [Rappture::icon bigroller${_icon}]
2723	$_dispatcher event -after 100 !waiticon
2724	}
2725	"stop" {
2726	$_dispatcher cancel !waiticon
2727	}
2728	}
2729	}
2730
2731	itcl::body Rappture::FlowvisViewer::GetMovie { widget width height } {
2732	set token "movie[incr _nextToken]"
2733	set var ::Rappture::MolvisViewer::_hardcopy($this-$token)
2734	set $var ""
2735
2736	# Setup an automatic timeout procedure.
2737	$_dispatcher dispatch $this !movietimeout "set $var {} ; list"
2738
2739	set popup [Rappture::Balloon .movie -title "Generating video..."]
2740	set inner [$popup component inner]
2741	label $inner.title -text "Generating Hardcopy" -font "Arial 10 bold"
2742	label $inner.please -text "This may take a few minutes." -font "Arial 10"
2743	label $inner.icon -image [Rappture::icon bigroller0]
2744	button $inner.cancel -text "Cancel" -font "Arial 10 bold" \
2745	-command [list set $var ""]
2746	$_dispatcher event -after 60000 !movietimeout
2747	WaitIcon start $inner.icon
2748	bind $inner.cancel <KeyPress-Return> [list $inner.cancel invoke]
2749
2750	blt::table $inner \
2751	0,0 $inner.title -columnspan 2 \
2752	1,0 $inner.please -anchor w \
2753	1,1 $inner.icon -anchor e \
2754	2,0 $inner.cancel -columnspan 2
2755	blt::table configure $inner r0 -pady 4
2756	blt::table configure $inner r2 -pady 4
2757	grab set -local $inner
2758	focus $inner.cancel
2759
2760	flow duration
2761	flow speed
2762	set nframes [expr $_flow(duration) / $_flow(delay)]
2763	set framerate [expr 1000.0 / $_flow(delay)]
2764	set bitrate 2000
2765
2766	SendCmd "flow video $width $height $nframes $framerate $bitrate"
2767
2768	$popup activate $widget below
2769	update
2770	# We wait here for either
2771	# 1) the png to be delivered or
2772	# 2) timeout or
2773	# 3) user cancels the operation.
2774	tkwait variable $var
2775
2776	# Clean up.
2777	$_dispatcher cancel !pngtimeout
2778	WaitIcon stop $inner.icon
2779	grab release $inner
2780	$popup deactivate
2781	destroy $popup
2782	update
2783
2784	if { $_hardcopy($this-$token) != "" } {
2785	return [list .png $_hardcopy($this-$token)]
2786	}
2787	return ""
2788	}
2789

Note: See TracBrowser for help on using the repository browser.

Download in other formats: