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source: trunk/gui/scripts/nanovisviewer.tcl @ 2390

Last change on this file since 2390 was 2390, checked in by gah, 13 years ago

File size: 70.0 KB

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1
2	# ----------------------------------------------------------------------
3	# COMPONENT: nanovisviewer - 3D volume rendering
4	#
5	# This widget performs volume rendering on 3D scalar/vector datasets.
6	# It connects to the Nanovis server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2005 Purdue Research Foundation
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	package require Img
18
19	#
20	# FIXME:
21	# Need to Add DX readers this client to examine the data before
22	# it's sent to the server. This will eliminate 90% of the insanity in
23	# computing the limits of all the volumes. I can rip out all the
24	# "receive data" "send transfer function" event crap.
25	#
26	# This means we can compute the transfer function (relative values) and
27	# draw the legend min/max values without waiting for the information to
28	# come from the server. This will also prevent the flashing that occurs
29	# when a new volume is drawn (using the default transfer function) and
30	# then when the correct transfer function has been sent and linked to
31	# the volume.
32	#
33	option add *NanovisViewer.width 4i widgetDefault
34	option add NanovisViewercursor crosshair widgetDefault
35	option add *NanovisViewer.height 4i widgetDefault
36	option add *NanovisViewer.foreground black widgetDefault
37	option add *NanovisViewer.controlBackground gray widgetDefault
38	option add *NanovisViewer.controlDarkBackground #999999 widgetDefault
39	option add *NanovisViewer.plotBackground black widgetDefault
40	option add *NanovisViewer.plotForeground white widgetDefault
41	option add *NanovisViewer.plotOutline gray widgetDefault
42	option add *NanovisViewer.font \
43	--helvetica-medium-r-normal--12-* widgetDefault
44
45	# must use this name -- plugs into Rappture::resources::load
46	proc NanovisViewer_init_resources {} {
47	Rappture::resources::register \
48	nanovis_server Rappture::NanovisViewer::SetServerList
49	}
50
51	itcl::class Rappture::NanovisViewer {
52	inherit Rappture::VisViewer
53
54	itk_option define -plotforeground plotForeground Foreground ""
55	itk_option define -plotbackground plotBackground Background ""
56	itk_option define -plotoutline plotOutline PlotOutline ""
57
58	constructor { hostlist args } {
59	Rappture::VisViewer::constructor $hostlist
60	} {
61	# defined below
62	}
63	destructor {
64	# defined below
65	}
66	public proc SetServerList { namelist } {
67	Rappture::VisViewer::SetServerList "nanovis" $namelist
68	}
69	public method add {dataobj {settings ""}}
70	public method camera {option args}
71	public method delete {args}
72	public method disconnect {}
73	public method download {option args}
74	public method get {args}
75	public method isconnected {}
76	public method limits { tf }
77	public method overmarker { m x }
78	public method sendto { string }
79	public method parameters {title args} {
80	# do nothing
81	}
82	public method rmdupmarker { m x }
83	public method scale {args}
84	public method updatetransferfuncs {}
85
86	protected method Connect {}
87	protected method CurrentVolumes {{what -all}}
88	protected method Disconnect {}
89	protected method DoResize {}
90	protected method FixLegend {}
91	protected method FixSettings {what {value ""}}
92	protected method Pan {option x y}
93	protected method Rebuild {}
94	protected method ReceiveData { args }
95	protected method ReceiveImage { args }
96	protected method ReceiveLegend { tf vmin vmax size }
97	protected method Rotate {option x y}
98	protected method SendCmd {string}
99	protected method SendTransferFuncs {}
100	protected method Slice {option args}
101	protected method SlicerTip {axis}
102	protected method Zoom {option}
103
104	# The following methods are only used by this class.
105	private method AddIsoMarker { x y }
106	private method BuildCameraTab {}
107	private method BuildCutplanesTab {}
108	private method BuildViewTab {}
109	private method BuildVolumeTab {}
110	private method ComputeTransferFunc { tf }
111	private method EventuallyResize { w h }
112	private method EventuallyResizeLegend { }
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 volume { tag name }
118	private method GetVolumeInfo { w }
119
120	private variable _outbuf ;# buffer for outgoing commands
121
122	private variable _dlist "" ;# list of data objects
123	private variable _allDataObjs
124	private variable _obj2ovride ;# maps dataobj => style override
125	private variable _serverVols ;# contains all the dataobj-component
126	;# to volumes in the server
127	private variable _serverTfs ;# contains all the transfer functions
128	;# in the server.
129	private variable _recvdVols ;# list of data objs to send to server
130	private variable _vol2style ;# maps dataobj-component to transfunc
131	private variable _style2vols ;# maps tf back to list of
132	# dataobj-components using the tf.
133
134	private variable _click ;# info used for rotate operations
135	private variable _limits ;# autoscale min/max for all axes
136	private variable _view ;# view params for 3D view
137	private variable _isomarkers ;# array of isosurface level values 0..1
138	private common _settings
139	# Array of transfer functions in server. If 0 the transfer has been
140	# defined but not loaded. If 1 the transfer function has been named
141	# and loaded.
142	private variable _activeTfs
143	private variable _first "" ;# This is the topmost volume.
144	private variable _buffering 0
145
146	# This
147	# indicates which isomarkers and transfer
148	# function to use when changing markers,
149	# opacity, or thickness.
150	common _downloadPopup ;# download options from popup
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 NanovisViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
167
168	# Draw legend event
169	$_dispatcher register !legend
170	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
171
172	# Send transfer functions event
173	$_dispatcher register !send_transfunc
174	$_dispatcher dispatch $this !send_transfunc \
175	"[itcl::code $this SendTransferFuncs]; list"
176
177	# Rebuild event
178	$_dispatcher register !rebuild
179	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
180
181	# Resize event
182	$_dispatcher register !resize
183	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
184
185	set _outbuf ""
186
187	#
188	# Populate parser with commands handle incoming requests
189	#
190	$_parser alias image [itcl::code $this ReceiveImage]
191	$_parser alias legend [itcl::code $this ReceiveLegend]
192	$_parser alias data [itcl::code $this ReceiveData]
193
194	# Initialize the view to some default parameters.
195	array set _view {
196	theta 45
197	phi 45
198	psi 0
199	zoom 1.0
200	pan-x 0
201	pan-y 0
202	}
203	set _limits(vmin) 0.0
204	set _limits(vmax) 1.0
205
206	array set _settings [subst {
207	$this-pan-x $_view(pan-x)
208	$this-pan-y $_view(pan-y)
209	$this-phi $_view(phi)
210	$this-psi $_view(psi)
211	$this-theta $_view(theta)
212	$this-volume 1
213	$this-xcutplane 0
214	$this-xcutposition 0
215	$this-ycutplane 0
216	$this-ycutposition 0
217	$this-zcutplane 0
218	$this-zcutposition 0
219	$this-zoom $_view(zoom)
220	}]
221
222	itk_component add 3dview {
223	label $itk_component(plotarea).vol -image $_image(plot) \
224	-highlightthickness 0 -borderwidth 0
225	} {
226	usual
227	ignore -highlightthickness -borderwidth -background
228	}
229
230	set f [$itk_component(main) component controls]
231	itk_component add reset {
232	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
233	-highlightthickness 0 \
234	-image [Rappture::icon reset-view] \
235	-command [itcl::code $this Zoom reset]
236	} {
237	usual
238	ignore -highlightthickness
239	}
240	pack $itk_component(reset) -side top -padx 2 -pady 2
241	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
242
243	itk_component add zoomin {
244	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
245	-highlightthickness 0 \
246	-image [Rappture::icon zoom-in] \
247	-command [itcl::code $this Zoom in]
248	} {
249	usual
250	ignore -highlightthickness
251	}
252	pack $itk_component(zoomin) -side top -padx 2 -pady 2
253	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
254
255	itk_component add zoomout {
256	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
257	-highlightthickness 0 \
258	-image [Rappture::icon zoom-out] \
259	-command [itcl::code $this Zoom out]
260	} {
261	usual
262	ignore -highlightthickness
263	}
264	pack $itk_component(zoomout) -side top -padx 2 -pady 2
265	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
266
267	itk_component add volume {
268	Rappture::PushButton $f.volume \
269	-onimage [Rappture::icon volume-on] \
270	-offimage [Rappture::icon volume-off] \
271	-command [itcl::code $this FixSettings volume] \
272	-variable [itcl::scope _settings($this-volume)]
273	}
274	$itk_component(volume) select
275	Rappture::Tooltip::for $itk_component(volume) \
276	"Toggle the volume cloud on/off"
277	pack $itk_component(volume) -padx 2 -pady 2
278
279	BuildViewTab
280	BuildVolumeTab
281	BuildCutplanesTab
282	BuildCameraTab
283
284	# Legend
285
286	set _image(legend) [image create photo]
287	itk_component add legend {
288	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
289	} {
290	usual
291	ignore -highlightthickness
292	rename -background -plotbackground plotBackground Background
293	}
294	bind $itk_component(legend) <Configure> \
295	[itcl::code $this EventuallyResizeLegend]
296
297	# Hack around the Tk panewindow. The problem is that the requested
298	# size of the 3d view isn't set until an image is retrieved from
299	# the server. So the panewindow uses the tiny size.
300	set w 10000
301	pack forget $itk_component(3dview)
302	blt::table $itk_component(plotarea) \
303	0,0 $itk_component(3dview) -fill both -reqwidth $w \
304	1,0 $itk_component(legend) -fill x
305	blt::table configure $itk_component(plotarea) r1 -resize none
306
307	# Bindings for rotation via mouse
308	bind $itk_component(3dview) <ButtonPress-1> \
309	[itcl::code $this Rotate click %x %y]
310	bind $itk_component(3dview) <B1-Motion> \
311	[itcl::code $this Rotate drag %x %y]
312	bind $itk_component(3dview) <ButtonRelease-1> \
313	[itcl::code $this Rotate release %x %y]
314	bind $itk_component(3dview) <Configure> \
315	[itcl::code $this EventuallyResize %w %h]
316
317	# Bindings for panning via mouse
318	bind $itk_component(3dview) <ButtonPress-2> \
319	[itcl::code $this Pan click %x %y]
320	bind $itk_component(3dview) <B2-Motion> \
321	[itcl::code $this Pan drag %x %y]
322	bind $itk_component(3dview) <ButtonRelease-2> \
323	[itcl::code $this Pan release %x %y]
324
325	# Bindings for panning via keyboard
326	bind $itk_component(3dview) <KeyPress-Left> \
327	[itcl::code $this Pan set -10 0]
328	bind $itk_component(3dview) <KeyPress-Right> \
329	[itcl::code $this Pan set 10 0]
330	bind $itk_component(3dview) <KeyPress-Up> \
331	[itcl::code $this Pan set 0 -10]
332	bind $itk_component(3dview) <KeyPress-Down> \
333	[itcl::code $this Pan set 0 10]
334	bind $itk_component(3dview) <Shift-KeyPress-Left> \
335	[itcl::code $this Pan set -2 0]
336	bind $itk_component(3dview) <Shift-KeyPress-Right> \
337	[itcl::code $this Pan set 2 0]
338	bind $itk_component(3dview) <Shift-KeyPress-Up> \
339	[itcl::code $this Pan set 0 -2]
340	bind $itk_component(3dview) <Shift-KeyPress-Down> \
341	[itcl::code $this Pan set 0 2]
342
343	# Bindings for zoom via keyboard
344	bind $itk_component(3dview) <KeyPress-Prior> \
345	[itcl::code $this Zoom out]
346	bind $itk_component(3dview) <KeyPress-Next> \
347	[itcl::code $this Zoom in]
348
349	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
350
351	if {[string equal "x11" [tk windowingsystem]]} {
352	# Bindings for zoom via mouse
353	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
354	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
355	}
356
357	set _image(download) [image create photo]
358
359	eval itk_initialize $args
360
361	Connect
362	}
363
364	# ----------------------------------------------------------------------
365	# DESTRUCTOR
366	# ----------------------------------------------------------------------
367	itcl::body Rappture::NanovisViewer::destructor {} {
368	$_dispatcher cancel !rebuild
369	$_dispatcher cancel !send_transfunc
370	$_dispatcher cancel !resize
371	image delete $_image(plot)
372	image delete $_image(legend)
373	image delete $_image(download)
374	array unset _settings $this-*
375	}
376
377	# ----------------------------------------------------------------------
378	# USAGE: add <dataobj> ?<settings>?
379	#
380	# Clients use this to add a data object to the plot. The optional
381	# <settings> are used to configure the plot. Allowed settings are
382	# -color, -brightness, -width, -linestyle, and -raise.
383	# ----------------------------------------------------------------------
384	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
385	array set params {
386	-color auto
387	-width 1
388	-linestyle solid
389	-brightness 0
390	-raise 0
391	-description ""
392	-param ""
393	}
394	foreach {opt val} $settings {
395	if {![info exists params($opt)]} {
396	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
397	}
398	set params($opt) $val
399	}
400	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
401	# can't handle -autocolors yet
402	set params(-color) black
403	}
404	set pos [lsearch -exact $dataobj $_dlist]
405	if {$pos < 0} {
406	lappend _dlist $dataobj
407	set _allDataObjs($dataobj) 1
408	set _obj2ovride($dataobj-color) $params(-color)
409	set _obj2ovride($dataobj-width) $params(-width)
410	set _obj2ovride($dataobj-raise) $params(-raise)
411	$_dispatcher event -idle !rebuild
412	}
413	}
414
415	# ----------------------------------------------------------------------
416	# USAGE: get ?-objects?
417	# USAGE: get ?-image 3dview\|legend?
418	#
419	# Clients use this to query the list of objects being plotted, in
420	# order from bottom to top of this result. The optional "-image"
421	# flag can also request the internal images being shown.
422	# ----------------------------------------------------------------------
423	itcl::body Rappture::NanovisViewer::get {args} {
424	if {[llength $args] == 0} {
425	set args "-objects"
426	}
427
428	set op [lindex $args 0]
429	switch -- $op {
430	-objects {
431	# put the dataobj list in order according to -raise options
432	set dlist $_dlist
433	foreach obj $dlist {
434	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
435	set i [lsearch -exact $dlist $obj]
436	if {$i >= 0} {
437	set dlist [lreplace $dlist $i $i]
438	lappend dlist $obj
439	}
440	}
441	}
442	return $dlist
443	}
444	-image {
445	if {[llength $args] != 2} {
446	error "wrong # args: should be \"get -image 3dview\|legend\""
447	}
448	switch -- [lindex $args end] {
449	3dview {
450	return $_image(plot)
451	}
452	legend {
453	return $_image(legend)
454	}
455	default {
456	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
457	}
458	}
459	}
460	default {
461	error "bad option \"$op\": should be -objects or -image"
462	}
463	}
464	}
465
466	# ----------------------------------------------------------------------
467	# USAGE: delete ?<dataobj1> <dataobj2> ...?
468	#
469	# Clients use this to delete a dataobj from the plot. If no dataobjs
470	# are specified, then all dataobjs are deleted. No data objects are
471	# deleted. They are only removed from the display list.
472	#
473	# ----------------------------------------------------------------------
474	itcl::body Rappture::NanovisViewer::delete {args} {
475	if {[llength $args] == 0} {
476	set args $_dlist
477	}
478	# Delete all specified dataobjs
479	set changed 0
480	foreach dataobj $args {
481	set pos [lsearch -exact $_dlist $dataobj]
482	if { $pos >= 0 } {
483	set _dlist [lreplace $_dlist $pos $pos]
484	array unset _limits $dataobj*
485	array unset _obj2ovride $dataobj-*
486	array unset _vol2style $dataobj-*
487	set changed 1
488	}
489	}
490	# If anything changed, then rebuild the plot
491	if {$changed} {
492	$_dispatcher event -idle !rebuild
493	}
494	}
495
496	# ----------------------------------------------------------------------
497	# USAGE: scale ?<data1> <data2> ...?
498	#
499	# Sets the default limits for the overall plot according to the
500	# limits of the data for all of the given <data> objects. This
501	# accounts for all objects--even those not showing on the screen.
502	# Because of this, the limits are appropriate for all objects as
503	# the user scans through data in the ResultSet viewer.
504	# ----------------------------------------------------------------------
505	itcl::body Rappture::NanovisViewer::scale {args} {
506	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
507	set _limits($val) ""
508	}
509	foreach obj $args {
510	foreach axis {x y z v} {
511
512	foreach { min max } [$obj limits $axis] break
513
514	if {"" != $min && "" != $max} {
515	if {"" == $_limits(${axis}min)} {
516	set _limits(${axis}min) $min
517	set _limits(${axis}max) $max
518	} else {
519	if {$min < $_limits(${axis}min)} {
520	set _limits(${axis}min) $min
521	}
522	if {$max > $_limits(${axis}max)} {
523	set _limits(${axis}max) $max
524	}
525	}
526	}
527	}
528	}
529	}
530
531	# ----------------------------------------------------------------------
532	# USAGE: download coming
533	# USAGE: download controls <downloadCommand>
534	# USAGE: download now
535	#
536	# Clients use this method to create a downloadable representation
537	# of the plot. Returns a list of the form {ext string}, where
538	# "ext" is the file extension (indicating the type of data) and
539	# "string" is the data itself.
540	# ----------------------------------------------------------------------
541	itcl::body Rappture::NanovisViewer::download {option args} {
542	switch $option {
543	coming {
544	if {[catch {
545	blt::winop snap $itk_component(plotarea) $_image(download)
546	}]} {
547	$_image(download) configure -width 1 -height 1
548	$_image(download) put #000000
549	}
550	}
551	controls {
552	# no controls for this download yet
553	return ""
554	}
555	now {
556	# Get the image data (as base64) and decode it back to binary.
557	# This is better than writing to temporary files. When we switch
558	# to the BLT picture image it won't be necessary to decode the
559	# image data.
560	if { [image width $_image(plot)] > 0 &&
561	[image height $_image(plot)] > 0 } {
562	set bytes [$_image(plot) data -format "jpeg -quality 100"]
563	set bytes [Rappture::encoding::decode -as b64 $bytes]
564	return [list .jpg $bytes]
565	}
566	return ""
567	}
568	default {
569	error "bad option \"$option\": should be coming, controls, now"
570	}
571	}
572	}
573
574	# ----------------------------------------------------------------------
575	# USAGE: Connect ?<host:port>,<host:port>...?
576	#
577	# Clients use this method to establish a connection to a new
578	# server, or to reestablish a connection to the previous server.
579	# Any existing connection is automatically closed.
580	# ----------------------------------------------------------------------
581	itcl::body Rappture::NanovisViewer::Connect {} {
582	set _hosts [GetServerList "nanovis"]
583	if { "" == $_hosts } {
584	return 0
585	}
586	set result [VisViewer::Connect $_hosts]
587	if { $result } {
588	set w [winfo width $itk_component(3dview)]
589	set h [winfo height $itk_component(3dview)]
590	EventuallyResize $w $h
591	}
592	return $result
593	}
594
595	#
596	# isconnected --
597	#
598	# Indicates if we are currently connected to the visualization server.
599	#
600	itcl::body Rappture::NanovisViewer::isconnected {} {
601	return [VisViewer::IsConnected]
602	}
603
604	#
605	# disconnect --
606	#
607	itcl::body Rappture::NanovisViewer::disconnect {} {
608	Disconnect
609	}
610
611	#
612	# Disconnect --
613	#
614	# Clients use this method to disconnect from the current rendering
615	# server.
616	#
617	itcl::body Rappture::NanovisViewer::Disconnect {} {
618	VisViewer::Disconnect
619
620	# disconnected -- no more data sitting on server
621	set _outbuf ""
622	array unset _serverVols
623	}
624
625	#
626	# sendto --
627	#
628	itcl::body Rappture::NanovisViewer::sendto { bytes } {
629	SendBytes "$bytes\n"
630	}
631
632	#
633	# SendCmd
634	#
635	# Send commands off to the rendering server. If we're currently
636	# sending data objects to the server, buffer the commands to be
637	# sent later.
638	#
639	itcl::body Rappture::NanovisViewer::SendCmd {string} {
640	if { $_buffering } {
641	append _outbuf $string "\n"
642	} else {
643	foreach line [split $string \n] {
644	SendEcho >>line $line
645	}
646	SendBytes "$string\n"
647	}
648	}
649
650
651	# ----------------------------------------------------------------------
652	# USAGE: SendTransferFuncs
653	# ----------------------------------------------------------------------
654	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
655	if { $_first == "" } {
656	puts stderr "first not set"
657	return
658	}
659	# Insure that the global opacity and thickness settings (in the slider
660	# settings widgets) are used for the active transfer-function. Update
661	# the values in the _settings varible.
662	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
663	# Scale values between 0.00001 and 0.01000
664	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
665
666	foreach vol [CurrentVolumes] {
667	if { ![info exists _serverVols($vol)] \|\| !$_serverVols($vol) } {
668	# The volume hasn't reached the server yet. How did we get
669	# here?
670	continue
671	}
672	if { ![info exists _vol2style($vol)] } {
673	puts stderr "unknown volume $vol"
674	continue; # How does this happen?
675	}
676	set tf $_vol2style($vol)
677	set _settings($this-$tf-opacity) $opacity
678	set _settings($this-$tf-thickness) $thickness
679	ComputeTransferFunc $tf
680	# FIXME: Need to the send information as to what transfer functions
681	# to update so that we only update the transfer function
682	# as necessary. Right now, all transfer functions are
683	# updated. This makes moving the isomarker slider chunky.
684	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
685	set _activeTfs($tf) 1
686	}
687	SendCmd "volume shading transfunc $tf $vol"
688	}
689	FixLegend
690	}
691
692	# ----------------------------------------------------------------------
693	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
694	#
695	# Invoked automatically whenever the "image" command comes in from
696	# the rendering server. Indicates that binary image data with the
697	# specified <size> will follow.
698	# ----------------------------------------------------------------------
699	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
700	array set info {
701	-token "???"
702	-bytes 0
703	-type image
704	}
705	array set info $args
706	set bytes [ReceiveBytes $info(-bytes)]
707	ReceiveEcho <<line "<read $info(-bytes) bytes"
708	if { $info(-type) == "image" } {
709	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
710	$_image(plot) configure -data $bytes
711	} elseif { $info(type) == "print" } {
712	set tag $this-print-$info(-token)
713	set _hardcopy($tag) $bytes
714	}
715	}
716
717	#
718	# ReceiveLegend --
719	#
720	# The procedure is the response from the render server to each "legend"
721	# command. The server sends back a "legend" command invoked our
722	# the slave interpreter. The purpose is to collect data of the image
723	# representing the legend in the canvas. In addition, the isomarkers
724	# of the active transfer function are displayed.
725	#
726	# I don't know is this is the right place to display the isomarkers.
727	# I don't know all the different paths used to draw the plot. There's
728	# "Rebuild", "add", etc.
729	#
730	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
731	if { ![isconnected] } {
732	return
733	}
734	set bytes [ReceiveBytes $size]
735	$_image(legend) configure -data $bytes
736	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
737
738	set c $itk_component(legend)
739	set w [winfo width $c]
740	set h [winfo height $c]
741	set lx 10
742	set ly [expr {$h - 1}]
743	if {"" == [$c find withtag transfunc]} {
744	$c create image 10 10 -anchor nw \
745	-image $_image(legend) -tags transfunc
746	$c create text $lx $ly -anchor sw \
747	-fill $itk_option(-plotforeground) -tags "limits vmin"
748	$c create text [expr {$w-$lx}] $ly -anchor se \
749	-fill $itk_option(-plotforeground) -tags "limits vmax"
750	$c lower transfunc
751	$c bind transfunc <ButtonRelease-1> \
752	[itcl::code $this AddIsoMarker %x %y]
753	}
754	# Display the markers used by the active transfer function.
755
756	array set limits [limits $tf]
757	$c itemconfigure vmin -text [format %.2g $limits(min)]
758	$c coords vmin $lx $ly
759
760	$c itemconfigure vmax -text [format %.2g $limits(max)]
761	$c coords vmax [expr {$w-$lx}] $ly
762
763	if { [info exists _isomarkers($tf)] } {
764	foreach m $_isomarkers($tf) {
765	$m visible yes
766	}
767	}
768	}
769
770	#
771	# ReceiveData --
772	#
773	# The procedure is the response from the render server to each "data
774	# follows" command. The server sends back a "data" command invoked our
775	# the slave interpreter. The purpose is to collect the min/max of the
776	# volume sent to the render server. Since the client (nanovisviewer)
777	# doesn't parse 3D data formats, we rely on the server (nanovis) to
778	# tell us what the limits are. Once we've received the limits to all
779	# the data we've sent (tracked by _recvdVols) we can then determine
780	# what the transfer functions are for these volumes.
781	#
782	#
783	# Note: There is a considerable tradeoff in having the server report
784	# back what the data limits are. It means that much of the code
785	# having to do with transfer-functions has to wait for the data
786	# to come back, since the isomarkers are calculated based upon
787	# the data limits. The client code is much messier because of
788	# this. The alternative is to parse any of the 3D formats on the
789	# client side.
790	#
791	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
792	if { ![isconnected] } {
793	return
794	}
795	# Arguments from server are name value pairs. Stuff them in an array.
796	array set info $args
797
798	set tag $info(tag)
799	set parts [split $tag -]
800
801	#
802	# Volumes don't exist until we're told about them.
803	#
804	set dataobj [lindex $parts 0]
805	set _serverVols($tag) 1
806	if { $_settings($this-volume) && $dataobj == $_first } {
807	SendCmd "volume state 1 $tag"
808	}
809	set _limits($tag-min) $info(min); # Minimum value of the volume.
810	set _limits($tag-max) $info(max); # Maximum value of the volume.
811	set _limits(vmin) $info(vmin); # Overall minimum value.
812	set _limits(vmax) $info(vmax); # Overall maximum value.
813
814	unset _recvdVols($tag)
815	if { [array size _recvdVols] == 0 } {
816	# The active transfer function is by default the first component of
817	# the first data object. This assumes that the data is always
818	# successfully transferred.
819	updatetransferfuncs
820	}
821	}
822
823	# ----------------------------------------------------------------------
824	# USAGE: Rebuild
825	#
826	# Called automatically whenever something changes that affects the
827	# data in the widget. Clears any existing data and rebuilds the
828	# widget to display new data.
829	# ----------------------------------------------------------------------
830	itcl::body Rappture::NanovisViewer::Rebuild {} {
831
832	# Turn on buffering of commands to the server. We don't want to
833	# be preempted by a server disconnect/reconnect (which automatically
834	# generates a new call to Rebuild).
835	set _buffering 1
836
837	# Hide all the isomarkers. Can't remove them. Have to remember the
838	# settings since the user may have created/deleted/moved markers.
839
840	foreach tf [array names _isomarkers] {
841	foreach m $_isomarkers($tf) {
842	$m visible no
843	}
844	}
845
846	set w [winfo width $itk_component(3dview)]
847	set h [winfo height $itk_component(3dview)]
848	EventuallyResize $w $h
849
850	foreach dataobj [get] {
851	foreach comp [$dataobj components] {
852	set vol $dataobj-$comp
853	if { ![info exists _serverVols($vol)] } {
854	# Send the data as one huge base64-encoded mess -- yuck!
855	set data [$dataobj values $comp]
856	set nbytes [string length $data]
857	append _outbuf "volume data follows $nbytes $vol\n"
858	append _outbuf $data
859	set _recvdVols($vol) 1
860	set _serverVols($vol) 0
861	}
862	NameTransferFunc $dataobj $comp
863	}
864	}
865	#
866	# Reset the camera and other view parameters
867	#
868
869	set _settings($this-theta) $_view(theta)
870	set _settings($this-phi) $_view(phi)
871	set _settings($this-psi) $_view(psi)
872	set _settings($this-pan-x) $_view(pan-x)
873	set _settings($this-pan-y) $_view(pan-y)
874	set _settings($this-zoom) $_view(zoom)
875
876	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
877	SendCmd "camera angle $xyz"
878	PanCamera
879	SendCmd "camera zoom $_view(zoom)"
880	FixSettings light
881	FixSettings transp
882	FixSettings isosurface
883	FixSettings grid
884	FixSettings axes
885	FixSettings outline
886
887	# nothing to send -- activate the proper ivol
888	SendCmd "volume state 0"
889	set _first [lindex [get] 0]
890	if {"" != $_first} {
891	set axis [$_first hints updir]
892	if { "" != $axis } {
893	SendCmd "up $axis"
894	}
895	set location [$_first hints camera]
896	if { $location != "" } {
897	array set _view $location
898	}
899	set vols [array names _serverVols $_first-*]
900	if { $vols != "" } {
901	SendCmd "volume state 1 $vols"
902	}
903	}
904	# If the first volume already exists on the server, then make sure we
905	# display the proper transfer function in the legend.
906	set comp [lindex [$_first components] 0]
907	if { [info exists _serverVols($_first-$comp)] } {
908	updatetransferfuncs
909	}
910
911	# Sync the state of slicers
912	set vols [CurrentVolumes -cutplanes]
913	foreach axis {x y z} {
914	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
915	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
916	set vol [lindex $vols 0]
917	SendCmd "cutplane position $pos $axis $vol"
918	}
919	SendCmd "volume data state $_settings($this-volume) $vols"
920	set _buffering 0; # Turn off buffering.
921	# Actually write the commands to the server socket. If it fails, we don't
922	# care. We're finished here.
923	blt::busy hold $itk_component(hull)
924	SendBytes $_outbuf;
925	blt::busy release $itk_component(hull)
926	set _outbuf ""; # Clear the buffer.
927	}
928
929	# ----------------------------------------------------------------------
930	# USAGE: CurrentVolumes ?-cutplanes?
931	#
932	# Returns a list of volume server IDs for the current volume being
933	# displayed. This is normally a single ID, but it might be a list
934	# of IDs if the current data object has multiple components.
935	# ----------------------------------------------------------------------
936	itcl::body Rappture::NanovisViewer::CurrentVolumes {{what -all}} {
937	set rlist ""
938	if { $_first == "" } {
939	return
940	}
941	foreach comp [$_first components] {
942	set vol $_first-$comp
943	if { [info exists _serverVols($vol)] && $_serverVols($vol) } {
944	array set style {
945	-cutplanes 1
946	}
947	array set style [lindex [$_first components -style $comp] 0]
948	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
949	lappend rlist $vol
950	}
951	}
952	}
953	return $rlist
954	}
955
956	# ----------------------------------------------------------------------
957	# USAGE: Zoom in
958	# USAGE: Zoom out
959	# USAGE: Zoom reset
960	#
961	# Called automatically when the user clicks on one of the zoom
962	# controls for this widget. Changes the zoom for the current view.
963	# ----------------------------------------------------------------------
964	itcl::body Rappture::NanovisViewer::Zoom {option} {
965	switch -- $option {
966	"in" {
967	set _view(zoom) [expr {$_view(zoom)*1.25}]
968	set _settings($this-zoom) $_view(zoom)
969	}
970	"out" {
971	set _view(zoom) [expr {$_view(zoom)*0.8}]
972	set _settings($this-zoom) $_view(zoom)
973	}
974	"reset" {
975	array set _view {
976	theta 45
977	phi 45
978	psi 0
979	zoom 1.0
980	pan-x 0
981	pan-y 0
982	}
983	if { $_first != "" } {
984	set location [$_first hints camera]
985	if { $location != "" } {
986	array set _view $location
987	}
988	}
989	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
990	SendCmd "camera angle $xyz"
991	PanCamera
992	set _settings($this-theta) $_view(theta)
993	set _settings($this-phi) $_view(phi)
994	set _settings($this-psi) $_view(psi)
995	set _settings($this-pan-x) $_view(pan-x)
996	set _settings($this-pan-y) $_view(pan-y)
997	set _settings($this-zoom) $_view(zoom)
998	}
999	}
1000	SendCmd "camera zoom $_view(zoom)"
1001	}
1002
1003	itcl::body Rappture::NanovisViewer::PanCamera {} {
1004	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1005	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1006	set x $_view(pan-x)
1007	set y $_view(pan-y)
1008	SendCmd "camera pan $x $y"
1009	}
1010
1011
1012	# ----------------------------------------------------------------------
1013	# USAGE: Rotate click <x> <y>
1014	# USAGE: Rotate drag <x> <y>
1015	# USAGE: Rotate release <x> <y>
1016	#
1017	# Called automatically when the user clicks/drags/releases in the
1018	# plot area. Moves the plot according to the user's actions.
1019	# ----------------------------------------------------------------------
1020	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1021	switch -- $option {
1022	click {
1023	$itk_component(3dview) configure -cursor fleur
1024	set _click(x) $x
1025	set _click(y) $y
1026	set _click(theta) $_view(theta)
1027	set _click(phi) $_view(phi)
1028	}
1029	drag {
1030	if {[array size _click] == 0} {
1031	Rotate click $x $y
1032	} else {
1033	set w [winfo width $itk_component(3dview)]
1034	set h [winfo height $itk_component(3dview)]
1035	if {$w <= 0 \|\| $h <= 0} {
1036	return
1037	}
1038
1039	if {[catch {
1040	# this fails sometimes for no apparent reason
1041	set dx [expr {double($x-$_click(x))/$w}]
1042	set dy [expr {double($y-$_click(y))/$h}]
1043	}]} {
1044	return
1045	}
1046
1047	#
1048	# Rotate the camera in 3D
1049	#
1050	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1051	# when psi is flipped around, theta moves backwards
1052	set dy [expr {-$dy}]
1053	}
1054	set theta [expr {$_view(theta) - $dy*180}]
1055	while {$theta < 0} { set theta [expr {$theta+180}] }
1056	while {$theta > 180} { set theta [expr {$theta-180}] }
1057
1058	if {abs($theta) >= 30 && abs($theta) <= 160} {
1059	set phi [expr {$_view(phi) - $dx*360}]
1060	while {$phi < 0} { set phi [expr {$phi+360}] }
1061	while {$phi > 360} { set phi [expr {$phi-360}] }
1062	set psi $_view(psi)
1063	} else {
1064	set phi $_view(phi)
1065	set psi [expr {$_view(psi) - $dx*360}]
1066	while {$psi < -180} { set psi [expr {$psi+360}] }
1067	while {$psi > 180} { set psi [expr {$psi-360}] }
1068	}
1069
1070	set _view(theta) $theta
1071	set _view(phi) $phi
1072	set _view(psi) $psi
1073	set xyz [Euler2XYZ $theta $phi $psi]
1074	set _settings($this-theta) $_view(theta)
1075	set _settings($this-phi) $_view(phi)
1076	set _settings($this-psi) $_view(psi)
1077	SendCmd "camera angle $xyz"
1078	set _click(x) $x
1079	set _click(y) $y
1080	}
1081	}
1082	release {
1083	Rotate drag $x $y
1084	$itk_component(3dview) configure -cursor ""
1085	catch {unset _click}
1086	}
1087	default {
1088	error "bad option \"$option\": should be click, drag, release"
1089	}
1090	}
1091	}
1092
1093	# ----------------------------------------------------------------------
1094	# USAGE: $this Pan click x y
1095	# $this Pan drag x y
1096	# $this Pan release x y
1097	#
1098	# Called automatically when the user clicks on one of the zoom
1099	# controls for this widget. Changes the zoom for the current view.
1100	# ----------------------------------------------------------------------
1101	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1102	# Experimental stuff
1103	set w [winfo width $itk_component(3dview)]
1104	set h [winfo height $itk_component(3dview)]
1105	if { $option == "set" } {
1106	set x [expr $x / double($w)]
1107	set y [expr $y / double($h)]
1108	set _view(pan-x) [expr $_view(pan-x) + $x]
1109	set _view(pan-y) [expr $_view(pan-y) + $y]
1110	PanCamera
1111	set _settings($this-pan-x) $_view(pan-x)
1112	set _settings($this-pan-y) $_view(pan-y)
1113	return
1114	}
1115	if { $option == "click" } {
1116	set _click(x) $x
1117	set _click(y) $y
1118	$itk_component(3dview) configure -cursor hand1
1119	}
1120	if { $option == "drag" \|\| $option == "release" } {
1121	set dx [expr ($_click(x) - $x)/double($w)]
1122	set dy [expr ($_click(y) - $y)/double($h)]
1123	set _click(x) $x
1124	set _click(y) $y
1125	set _view(pan-x) [expr $_view(pan-x) - $dx]
1126	set _view(pan-y) [expr $_view(pan-y) - $dy]
1127	PanCamera
1128	set _settings($this-pan-x) $_view(pan-x)
1129	set _settings($this-pan-y) $_view(pan-y)
1130	}
1131	if { $option == "release" } {
1132	$itk_component(3dview) configure -cursor ""
1133	}
1134	}
1135
1136	# ----------------------------------------------------------------------
1137	# USAGE: FixSettings <what> ?<value>?
1138	#
1139	# Used internally to update rendering settings whenever parameters
1140	# change in the popup settings panel. Sends the new settings off
1141	# to the back end.
1142	# ----------------------------------------------------------------------
1143	itcl::body Rappture::NanovisViewer::FixSettings {what {value ""}} {
1144	switch -- $what {
1145	light {
1146	if {[isconnected]} {
1147	set val $_settings($this-light)
1148	set sval [expr {0.1*$val}]
1149	SendCmd "volume shading diffuse $sval"
1150	set sval [expr {sqrt($val+1.0)}]
1151	SendCmd "volume shading specular $sval"
1152	}
1153	}
1154	transp {
1155	if {[isconnected]} {
1156	set val $_settings($this-transp)
1157	set sval [expr {0.2*$val+1}]
1158	SendCmd "volume shading opacity $sval"
1159	}
1160	}
1161	opacity {
1162	if {[isconnected] && [array size _activeTfs] > 0 } {
1163	set val $_settings($this-opacity)
1164	set sval [expr { 0.01 * double($val) }]
1165	foreach tf [array names _activeTfs] {
1166	set _settings($this-$tf-opacity) $sval
1167	set _activeTfs($tf) 0
1168	}
1169	updatetransferfuncs
1170	}
1171	}
1172
1173	thickness {
1174	if {[isconnected] && [array names _activeTfs] > 0 } {
1175	set val $_settings($this-thickness)
1176	# Scale values between 0.00001 and 0.01000
1177	set sval [expr {0.0001*double($val)}]
1178	foreach tf [array names _activeTfs] {
1179	set _settings($this-$tf-thickness) $sval
1180	set _activeTfs($tf) 0
1181	}
1182	updatetransferfuncs
1183	}
1184	}
1185	"outline" {
1186	if {[isconnected]} {
1187	SendCmd "volume outline state $_settings($this-outline)"
1188	}
1189	}
1190	"isosurface" {
1191	if {[isconnected]} {
1192	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1193	}
1194	}
1195	"grid" {
1196	if { [isconnected] } {
1197	SendCmd "grid visible $_settings($this-grid)"
1198	}
1199	}
1200	"axes" {
1201	if { [isconnected] } {
1202	SendCmd "axis visible $_settings($this-axes)"
1203	}
1204	}
1205	"legend" {
1206	if { $_settings($this-legend) } {
1207	blt::table $itk_component(plotarea) \
1208	0,0 $itk_component(3dview) -fill both \
1209	1,0 $itk_component(legend) -fill x
1210	blt::table configure $itk_component(plotarea) r1 -resize none
1211	} else {
1212	blt::table forget $itk_component(legend)
1213	}
1214	}
1215	"volume" {
1216	if { [isconnected] } {
1217	set vols [CurrentVolumes -cutplanes]
1218	SendCmd "volume data state $_settings($this-volume) $vols"
1219	}
1220	}
1221	"xcutplane" - "ycutplane" - "zcutplane" {
1222	set axis [string range $what 0 0]
1223	set bool $_settings($this-$what)
1224	if { [isconnected] } {
1225	set vols [CurrentVolumes -cutplanes]
1226	set vol [lindex $vols 0]
1227	SendCmd "cutplane state $bool $axis $vol"
1228	}
1229	if { $bool } {
1230	$itk_component(${axis}CutScale) configure -state normal \
1231	-troughcolor white
1232	} else {
1233	$itk_component(${axis}CutScale) configure -state disabled \
1234	-troughcolor grey82
1235	}
1236	}
1237	default {
1238	error "don't know how to fix $what"
1239	}
1240	}
1241	}
1242
1243	# ----------------------------------------------------------------------
1244	# USAGE: FixLegend
1245	#
1246	# Used internally to update the legend area whenever it changes size
1247	# or when the field changes. Asks the server to send a new legend
1248	# for the current field.
1249	# ----------------------------------------------------------------------
1250	itcl::body Rappture::NanovisViewer::FixLegend {} {
1251	set _resizeLegendPending 0
1252	set lineht [font metrics $itk_option(-font) -linespace]
1253	set w [expr {$_width-20}]
1254	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1255	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1256	set vol [lindex [CurrentVolumes] 0]
1257	if { [info exists _vol2style($vol)] } {
1258	SendCmd "legend $_vol2style($vol) $w $h"
1259	}
1260	} else {
1261	# Can't do this as this will remove the items associated with the
1262	# isomarkers.
1263
1264	#$itk_component(legend) delete all
1265	}
1266	}
1267
1268	#
1269	# NameTransferFunc --
1270	#
1271	# Creates a transfer function name based on the <style> settings in the
1272	# library run.xml file. This placeholder will be used later to create
1273	# and send the actual transfer function once the data info has been sent
1274	# to us by the render server. [We won't know the volume limits until the
1275	# server parses the 3D data and sends back the limits via ReceiveData.]
1276	#
1277	# FIXME: The current way we generate transfer-function names completely
1278	# ignores the -markers option. The problem is that we are forced
1279	# to compute the name from an increasing complex set of values:
1280	# color, levels, marker, opacity. I think we're stuck doing it
1281	# now.
1282	#
1283	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj comp } {
1284	array set style {
1285	-color rainbow
1286	-levels 6
1287	-opacity 1.0
1288	}
1289	array set style [lindex [$dataobj components -style $comp] 0]
1290	set tf "$style(-color):$style(-levels):$style(-opacity)"
1291	set _vol2style($dataobj-$comp) $tf
1292	lappend _style2vols($tf) $dataobj-$comp
1293	return $tf
1294	}
1295
1296	#
1297	# ComputeTransferFunc --
1298	#
1299	# Computes and sends the transfer function to the render server. It's
1300	# assumed that the volume data limits are known and that the global
1301	# transfer-functions slider values have be setup. Both parts are
1302	# needed to compute the relative value (location) of the marker, and
1303	# the alpha map of the transfer function.
1304	#
1305	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1306	array set style {
1307	-color rainbow
1308	-levels 6
1309	-opacity 1.0
1310	}
1311	foreach {dataobj comp} [split $_style2vols($tf) -] break
1312	array set style [lindex [$dataobj components -style $comp] 0]
1313
1314
1315	# We have to parse the style attributes for a volume using this
1316	# transfer-function once. This sets up the initial isomarkers for the
1317	# transfer function. The user may add/delete markers, so we have to
1318	# maintain a list of markers for each transfer-function. We use the one
1319	# of the volumes (the first in the list) using the transfer-function as a
1320	# reference.
1321	#
1322	# FIXME: The current way we generate transfer-function names completely
1323	# ignores the -markers option. The problem is that we are forced
1324	# to compute the name from an increasing complex set of values:
1325	# color, levels, marker, opacity. I think the cow's out of the
1326	# barn on this one.
1327
1328	if { ![info exists _isomarkers($tf)] } {
1329	# Have to defer creation of isomarkers until we have data limits
1330	if { [info exists style(-markers)] } {
1331	ParseMarkersOption $tf $style(-markers)
1332	} else {
1333	ParseLevelsOption $tf $style(-levels)
1334	}
1335	}
1336	if {$style(-color) == "rainbow"} {
1337	set style(-color) "white:yellow:green:cyan:blue:magenta"
1338	}
1339	set clist [split $style(-color) :]
1340	set cmap "0.0 [Color2RGB white] "
1341	for {set i 0} {$i < [llength $clist]} {incr i} {
1342	set x [expr {double($i+1)/([llength $clist]+1)}]
1343	set color [lindex $clist $i]
1344	append cmap "$x [Color2RGB $color] "
1345	}
1346	append cmap "1.0 [Color2RGB $color]"
1347
1348	set tag $this-$tf
1349	if { ![info exists _settings($tag-opacity)] } {
1350	set _settings($tag-opacity) $style(-opacity)
1351	}
1352	set max $_settings($tag-opacity)
1353
1354	set isovalues {}
1355	foreach m $_isomarkers($tf) {
1356	lappend isovalues [$m relval]
1357	}
1358	# Sort the isovalues
1359	set isovalues [lsort -real $isovalues]
1360
1361	if { ![info exists _settings($tag-thickness)]} {
1362	set _settings($tag-thickness) 0.05
1363	}
1364	set delta $_settings($tag-thickness)
1365
1366	set first [lindex $isovalues 0]
1367	set last [lindex $isovalues end]
1368	set wmap ""
1369	if { $first == "" \|\| $first != 0.0 } {
1370	lappend wmap 0.0 0.0
1371	}
1372	foreach x $isovalues {
1373	set x1 [expr {$x-$delta-0.00001}]
1374	set x2 [expr {$x-$delta}]
1375	set x3 [expr {$x+$delta}]
1376	set x4 [expr {$x+$delta+0.00001}]
1377	if { $x1 < 0.0 } {
1378	set x1 0.0
1379	} elseif { $x1 > 1.0 } {
1380	set x1 1.0
1381	}
1382	if { $x2 < 0.0 } {
1383	set x2 0.0
1384	} elseif { $x2 > 1.0 } {
1385	set x2 1.0
1386	}
1387	if { $x3 < 0.0 } {
1388	set x3 0.0
1389	} elseif { $x3 > 1.0 } {
1390	set x3 1.0
1391	}
1392	if { $x4 < 0.0 } {
1393	set x4 0.0
1394	} elseif { $x4 > 1.0 } {
1395	set x4 1.0
1396	}
1397	# add spikes in the middle
1398	lappend wmap $x1 0.0
1399	lappend wmap $x2 $max
1400	lappend wmap $x3 $max
1401	lappend wmap $x4 0.0
1402	}
1403	if { $last == "" \|\| $last != 1.0 } {
1404	lappend wmap 1.0 0.0
1405	}
1406	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1407	}
1408
1409	# ----------------------------------------------------------------------
1410	# CONFIGURATION OPTION: -plotbackground
1411	# ----------------------------------------------------------------------
1412	itcl::configbody Rappture::NanovisViewer::plotbackground {
1413	if { [isconnected] } {
1414	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1415	#fix this!
1416	#SendCmd "color background $r $g $b"
1417	}
1418	}
1419
1420	# ----------------------------------------------------------------------
1421	# CONFIGURATION OPTION: -plotforeground
1422	# ----------------------------------------------------------------------
1423	itcl::configbody Rappture::NanovisViewer::plotforeground {
1424	if { [isconnected] } {
1425	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1426	#fix this!
1427	#SendCmd "color background $r $g $b"
1428	}
1429	}
1430
1431	# ----------------------------------------------------------------------
1432	# CONFIGURATION OPTION: -plotoutline
1433	# ----------------------------------------------------------------------
1434	itcl::configbody Rappture::NanovisViewer::plotoutline {
1435	# Must check if we are connected because this routine is called from the
1436	# class body when the -plotoutline itk_option is defined. At that point
1437	# the NanovisViewer class constructor hasn't been called, so we can't
1438	# start sending commands to visualization server.
1439	if { [isconnected] } {
1440	if {"" == $itk_option(-plotoutline)} {
1441	SendCmd "volume outline state off"
1442	} else {
1443	SendCmd "volume outline state on"
1444	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1445	}
1446	}
1447	}
1448
1449	#
1450	# The -levels option takes a single value that represents the number
1451	# of evenly distributed markers based on the current data range. Each
1452	# marker is a relative value from 0.0 to 1.0.
1453	#
1454	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1455	set c $itk_component(legend)
1456	regsub -all "," $levels " " levels
1457	if {[string is int $levels]} {
1458	for {set i 1} { $i <= $levels } {incr i} {
1459	set x [expr {double($i)/($levels+1)}]
1460	set m [Rappture::IsoMarker \#auto $c $this $tf]
1461	$m relval $x
1462	lappend _isomarkers($tf) $m
1463	}
1464	} else {
1465	foreach x $levels {
1466	set m [Rappture::IsoMarker \#auto $c $this $tf]
1467	$m relval $x
1468	lappend _isomarkers($tf) $m
1469	}
1470	}
1471	}
1472
1473	#
1474	# The -markers option takes a list of zero or more values (the values
1475	# may be separated either by spaces or commas) that have the following
1476	# format:
1477	#
1478	# N% Percent of current total data range. Converted to
1479	# to a relative value between 0.0 and 1.0.
1480	# N Absolute value of marker. If the marker is outside of
1481	# the current range, it will be displayed on the outer
1482	# edge of the legends, but it range it represents will
1483	# not be seen.
1484	#
1485	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1486	set c $itk_component(legend)
1487	regsub -all "," $markers " " markers
1488	foreach marker $markers {
1489	set n [scan $marker "%g%s" value suffix]
1490	if { $n == 2 && $suffix == "%" } {
1491	# ${n}% : Set relative value.
1492	set value [expr {$value * 0.01}]
1493	set m [Rappture::IsoMarker \#auto $c $this $tf]
1494	$m relval $value
1495	lappend _isomarkers($tf) $m
1496	} else {
1497	# ${n} : Set absolute value.
1498	set m [Rappture::IsoMarker \#auto $c $this $tf]
1499	$m absval $value
1500	lappend _isomarkers($tf) $m
1501	}
1502	}
1503	}
1504
1505	# ----------------------------------------------------------------------
1506	# USAGE: UndateTransferFuncs
1507	# ----------------------------------------------------------------------
1508	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1509	$_dispatcher event -idle !send_transfunc
1510	}
1511
1512	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1513	if { $_first == "" } {
1514	error "active transfer function isn't set"
1515	}
1516	set vol [lindex [CurrentVolumes] 0]
1517	set tf $_vol2style($vol)
1518	set c $itk_component(legend)
1519	set m [Rappture::IsoMarker \#auto $c $this $tf]
1520	set w [winfo width $c]
1521	$m relval [expr {double($x-10)/($w-20)}]
1522	lappend _isomarkers($tf) $m
1523	updatetransferfuncs
1524	return 1
1525	}
1526
1527	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1528	set tf [$marker transferfunc]
1529	set bool 0
1530	if { [info exists _isomarkers($tf)] } {
1531	set list {}
1532	set marker [namespace tail $marker]
1533	foreach m $_isomarkers($tf) {
1534	set sx [$m screenpos]
1535	if { $m != $marker } {
1536	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1537	$marker relval [$m relval]
1538	itcl::delete object $m
1539	bell
1540	set bool 1
1541	continue
1542	}
1543	}
1544	lappend list $m
1545	}
1546	set _isomarkers($tf) $list
1547	updatetransferfuncs
1548	}
1549	return $bool
1550	}
1551
1552	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1553	set tf [$marker transferfunc]
1554	if { [info exists _isomarkers($tf)] } {
1555	set marker [namespace tail $marker]
1556	foreach m $_isomarkers($tf) {
1557	set sx [$m screenpos]
1558	if { $m != $marker } {
1559	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1560	$m activate $bool
1561	}
1562	}
1563	}
1564	return ""
1565	}
1566
1567	itcl::body Rappture::NanovisViewer::limits { tf } {
1568	set _limits(min) 0.0
1569	set _limits(max) 1.0
1570	if { ![info exists _style2vols($tf)] } {
1571	return [array get _limits]
1572	}
1573	set min ""; set max ""
1574	foreach vol $_style2vols($tf) {
1575	if { ![info exists _serverVols($vol)] } {
1576	continue
1577	}
1578	if { ![info exists _limits($vol-min)] } {
1579	continue
1580	}
1581	if { $min == "" \|\| $min > $_limits($vol-min) } {
1582	set min $_limits($vol-min)
1583	}
1584	if { $max == "" \|\| $max < $_limits($vol-max) } {
1585	set max $_limits($vol-max)
1586	}
1587	}
1588	if { $min != "" } {
1589	set _limits(min) $min
1590	}
1591	if { $max != "" } {
1592	set _limits(max) $max
1593	}
1594	return [array get _limits]
1595	}
1596
1597
1598	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1599	foreach { key value } {
1600	grid 0
1601	axes 1
1602	outline 1
1603	volume 1
1604	legend 1
1605	particles 1
1606	lic 1
1607	} {
1608	set _settings($this-$key) $value
1609	}
1610
1611	set fg [option get $itk_component(hull) font Font]
1612	#set bfg [option get $itk_component(hull) boldFont Font]
1613
1614	set inner [$itk_component(main) insert end \
1615	-title "View Settings" \
1616	-icon [Rappture::icon wrench]]
1617	$inner configure -borderwidth 4
1618
1619	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1620	checkbutton $inner.isosurface \
1621	-text "Isosurface shading" \
1622	-variable [itcl::scope _settings($this-isosurface)] \
1623	-command [itcl::code $this FixSettings isosurface] \
1624	-font "Arial 9"
1625
1626	checkbutton $inner.axes \
1627	-text "Axes" \
1628	-variable [itcl::scope _settings($this-axes)] \
1629	-command [itcl::code $this FixSettings axes] \
1630	-font "Arial 9"
1631
1632	checkbutton $inner.grid \
1633	-text "Grid" \
1634	-variable [itcl::scope _settings($this-grid)] \
1635	-command [itcl::code $this FixSettings grid] \
1636	-font "Arial 9"
1637
1638	checkbutton $inner.outline \
1639	-text "Outline" \
1640	-variable [itcl::scope _settings($this-outline)] \
1641	-command [itcl::code $this FixSettings outline] \
1642	-font "Arial 9"
1643
1644	checkbutton $inner.legend \
1645	-text "Legend" \
1646	-variable [itcl::scope _settings($this-legend)] \
1647	-command [itcl::code $this FixSettings legend] \
1648	-font "Arial 9"
1649
1650	checkbutton $inner.volume \
1651	-text "Volume" \
1652	-variable [itcl::scope _settings($this-volume)] \
1653	-command [itcl::code $this FixSettings volume] \
1654	-font "Arial 9"
1655
1656	blt::table $inner \
1657	0,0 $inner.axes -columnspan 2 -anchor w \
1658	1,0 $inner.grid -columnspan 2 -anchor w \
1659	2,0 $inner.outline -columnspan 2 -anchor w \
1660	3,0 $inner.volume -columnspan 2 -anchor w \
1661	4,0 $inner.legend -columnspan 2 -anchor w
1662
1663	if 0 {
1664	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1665	}
1666	blt::table configure $inner r* -resize none
1667	blt::table configure $inner r5 -resize expand
1668	}
1669
1670	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1671	foreach { key value } {
1672	light 40
1673	transp 50
1674	opacity 100
1675	thickness 350
1676	} {
1677	set _settings($this-$key) $value
1678	}
1679
1680	set inner [$itk_component(main) insert end \
1681	-title "Volume Settings" \
1682	-icon [Rappture::icon volume-on]]
1683	$inner configure -borderwidth 4
1684
1685	set fg [option get $itk_component(hull) font Font]
1686	#set bfg [option get $itk_component(hull) boldFont Font]
1687
1688	checkbutton $inner.vol -text "Show volume" -font $fg \
1689	-variable [itcl::scope _settings($this-volume)] \
1690	-command [itcl::code $this FixSettings volume]
1691	label $inner.shading -text "Shading:" -font $fg
1692
1693	label $inner.dim -text "Dim" -font $fg
1694	::scale $inner.light -from 0 -to 100 -orient horizontal \
1695	-variable [itcl::scope _settings($this-light)] \
1696	-width 10 \
1697	-showvalue off -command [itcl::code $this FixSettings light]
1698	label $inner.bright -text "Bright" -font $fg
1699
1700	label $inner.fog -text "Fog" -font $fg
1701	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1702	-variable [itcl::scope _settings($this-transp)] \
1703	-width 10 \
1704	-showvalue off -command [itcl::code $this FixSettings transp]
1705	label $inner.plastic -text "Plastic" -font $fg
1706
1707	label $inner.clear -text "Clear" -font $fg
1708	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1709	-variable [itcl::scope _settings($this-opacity)] \
1710	-width 10 \
1711	-showvalue off -command [itcl::code $this FixSettings opacity]
1712	label $inner.opaque -text "Opaque" -font $fg
1713
1714	label $inner.thin -text "Thin" -font $fg
1715	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1716	-variable [itcl::scope _settings($this-thickness)] \
1717	-width 10 \
1718	-showvalue off -command [itcl::code $this FixSettings thickness]
1719	label $inner.thick -text "Thick" -font $fg
1720
1721	blt::table $inner \
1722	0,0 $inner.vol -columnspan 4 -anchor w -pady 2 \
1723	1,0 $inner.shading -columnspan 4 -anchor w -pady {10 2} \
1724	2,0 $inner.dim -anchor e -pady 2 \
1725	2,1 $inner.light -columnspan 2 -pady 2 -fill x \
1726	2,3 $inner.bright -anchor w -pady 2 \
1727	3,0 $inner.fog -anchor e -pady 2 \
1728	3,1 $inner.transp -columnspan 2 -pady 2 -fill x \
1729	3,3 $inner.plastic -anchor w -pady 2 \
1730	4,0 $inner.clear -anchor e -pady 2 \
1731	4,1 $inner.opacity -columnspan 2 -pady 2 -fill x\
1732	4,3 $inner.opaque -anchor w -pady 2 \
1733	5,0 $inner.thin -anchor e -pady 2 \
1734	5,1 $inner.thickness -columnspan 2 -pady 2 -fill x\
1735	5,3 $inner.thick -anchor w -pady 2
1736
1737	blt::table configure $inner c0 c1 c3 r* -resize none
1738	blt::table configure $inner r6 -resize expand
1739	}
1740
1741	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1742	set inner [$itk_component(main) insert end \
1743	-title "Cutplane Settings" \
1744	-icon [Rappture::icon cutbutton]]
1745	$inner configure -borderwidth 4
1746
1747	# X-value slicer...
1748	itk_component add xCutButton {
1749	Rappture::PushButton $inner.xbutton \
1750	-onimage [Rappture::icon x-cutplane] \
1751	-offimage [Rappture::icon x-cutplane] \
1752	-command [itcl::code $this FixSettings xcutplane] \
1753	-variable [itcl::scope _settings($this-xcutplane)]
1754	}
1755	Rappture::Tooltip::for $itk_component(xCutButton) \
1756	"Toggle the X cut plane on/off"
1757
1758	itk_component add xCutScale {
1759	::scale $inner.xval -from 100 -to 0 \
1760	-width 10 -orient vertical -showvalue off \
1761	-borderwidth 1 -highlightthickness 0 \
1762	-command [itcl::code $this Slice move x] \
1763	-variable [itcl::scope _settings($this-xcutposition)]
1764	} {
1765	usual
1766	ignore -borderwidth -highlightthickness
1767	}
1768	# Set the default cutplane value before disabling the scale.
1769	$itk_component(xCutScale) set 50
1770	$itk_component(xCutScale) configure -state disabled
1771	Rappture::Tooltip::for $itk_component(xCutScale) \
1772	"@[itcl::code $this SlicerTip x]"
1773
1774	# Y-value slicer...
1775	itk_component add yCutButton {
1776	Rappture::PushButton $inner.ybutton \
1777	-onimage [Rappture::icon y-cutplane] \
1778	-offimage [Rappture::icon y-cutplane] \
1779	-command [itcl::code $this FixSettings ycutplane] \
1780	-variable [itcl::scope _settings($this-ycutplane)]
1781	}
1782	Rappture::Tooltip::for $itk_component(yCutButton) \
1783	"Toggle the Y cut plane on/off"
1784
1785	itk_component add yCutScale {
1786	::scale $inner.yval -from 100 -to 0 \
1787	-width 10 -orient vertical -showvalue off \
1788	-borderwidth 1 -highlightthickness 0 \
1789	-command [itcl::code $this Slice move y] \
1790	-variable [itcl::scope _settings($this-ycutposition)]
1791	} {
1792	usual
1793	ignore -borderwidth -highlightthickness
1794	}
1795	Rappture::Tooltip::for $itk_component(yCutScale) \
1796	"@[itcl::code $this SlicerTip y]"
1797	# Set the default cutplane value before disabling the scale.
1798	$itk_component(yCutScale) set 50
1799	$itk_component(yCutScale) configure -state disabled
1800
1801	# Z-value slicer...
1802	itk_component add zCutButton {
1803	Rappture::PushButton $inner.zbutton \
1804	-onimage [Rappture::icon z-cutplane] \
1805	-offimage [Rappture::icon z-cutplane] \
1806	-command [itcl::code $this FixSettings zcutplane] \
1807	-variable [itcl::scope _settings($this-zcutplane)]
1808	}
1809	Rappture::Tooltip::for $itk_component(zCutButton) \
1810	"Toggle the Z cut plane on/off"
1811
1812	itk_component add zCutScale {
1813	::scale $inner.zval -from 100 -to 0 \
1814	-width 10 -orient vertical -showvalue off \
1815	-borderwidth 1 -highlightthickness 0 \
1816	-command [itcl::code $this Slice move z] \
1817	-variable [itcl::scope _settings($this-zcutposition)]
1818	} {
1819	usual
1820	ignore -borderwidth -highlightthickness
1821	}
1822	$itk_component(zCutScale) set 50
1823	$itk_component(zCutScale) configure -state disabled
1824	#$itk_component(zCutScale) configure -state disabled
1825	Rappture::Tooltip::for $itk_component(zCutScale) \
1826	"@[itcl::code $this SlicerTip z]"
1827
1828	blt::table $inner \
1829	1,1 $itk_component(xCutButton) \
1830	1,2 $itk_component(yCutButton) \
1831	1,3 $itk_component(zCutButton) \
1832	0,1 $itk_component(xCutScale) \
1833	0,2 $itk_component(yCutScale) \
1834	0,3 $itk_component(zCutScale) \
1835
1836	blt::table configure $inner r0 r1 c* -resize none
1837	blt::table configure $inner r2 c4 -resize expand
1838	blt::table configure $inner c0 -width 2
1839	blt::table configure $inner c1 c2 c3 -padx 2
1840	}
1841
1842	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1843	set inner [$itk_component(main) insert end \
1844	-title "Camera Settings" \
1845	-icon [Rappture::icon camera]]
1846	$inner configure -borderwidth 4
1847
1848	set labels { phi theta psi pan-x pan-y zoom }
1849	set row 0
1850	foreach tag $labels {
1851	label $inner.${tag}label -text $tag -font "Arial 9"
1852	entry $inner.${tag} -font "Arial 9" -bg white \
1853	-textvariable [itcl::scope _settings($this-$tag)]
1854	bind $inner.${tag} <KeyPress-Return> \
1855	[itcl::code $this camera set ${tag}]
1856	blt::table $inner \
1857	$row,0 $inner.${tag}label -anchor e -pady 2 \
1858	$row,1 $inner.${tag} -anchor w -pady 2
1859	blt::table configure $inner r$row -resize none
1860	incr row
1861	}
1862	blt::table configure $inner c0 c1 -resize none
1863	blt::table configure $inner c2 -resize expand
1864	blt::table configure $inner r$row -resize expand
1865	}
1866
1867
1868	# ----------------------------------------------------------------------
1869	# USAGE: Slice move x\|y\|z <newval>
1870	#
1871	# Called automatically when the user drags the slider to move the
1872	# cut plane that slices 3D data. Gets the current value from the
1873	# slider and moves the cut plane to the appropriate point in the
1874	# data set.
1875	# ----------------------------------------------------------------------
1876	itcl::body Rappture::NanovisViewer::Slice {option args} {
1877	switch -- $option {
1878	move {
1879	if {[llength $args] != 2} {
1880	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1881	}
1882	set axis [lindex $args 0]
1883	set newval [lindex $args 1]
1884
1885	set newpos [expr {0.01*$newval}]
1886	set vols [CurrentVolumes -cutplanes]
1887	set vol [lindex $vols 0]
1888	SendCmd "cutplane position $newpos $axis $vol"
1889	}
1890	default {
1891	error "bad option \"$option\": should be axis, move, or volume"
1892	}
1893	}
1894	}
1895
1896	# ----------------------------------------------------------------------
1897	# USAGE: SlicerTip <axis>
1898	#
1899	# Used internally to generate a tooltip for the x/y/z slicer controls.
1900	# Returns a message that includes the current slicer value.
1901	# ----------------------------------------------------------------------
1902	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1903	set val [$itk_component(${axis}CutScale) get]
1904	# set val [expr {0.01*($val-50)
1905	# *($_limits(${axis}max)-$_limits(${axis}min))
1906	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1907	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1908	}
1909
1910
1911	itcl::body Rappture::NanovisViewer::DoResize {} {
1912	SendCmd "screen $_width $_height"
1913	set _resizePending 0
1914	}
1915
1916	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
1917	set _width $w
1918	set _height $h
1919	if { !$_resizePending } {
1920	$_dispatcher event -idle !resize
1921	set _resizePending 1
1922	}
1923	}
1924
1925	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
1926	if { !$_resizeLegendPending } {
1927	$_dispatcher event -idle !legend
1928	set _resizeLegendPending 1
1929	}
1930	}
1931
1932
1933	# camera --
1934	#
1935	itcl::body Rappture::NanovisViewer::camera {option args} {
1936	switch -- $option {
1937	"show" {
1938	puts [array get _view]
1939	}
1940	"set" {
1941	set who [lindex $args 0]
1942	set x $_settings($this-$who)
1943	set code [catch { string is double $x } result]
1944	if { $code != 0 \|\| !$result } {
1945	set _settings($this-$who) $_view($who)
1946	return
1947	}
1948	switch -- $who {
1949	"pan-x" - "pan-y" {
1950	set _view($who) $_settings($this-$who)
1951	PanCamera
1952	}
1953	"phi" - "theta" - "psi" {
1954	set _view($who) $_settings($this-$who)
1955	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1956	SendCmd "camera angle $xyz"
1957	}
1958	"zoom" {
1959	set _view($who) $_settings($this-$who)
1960	SendCmd "camera zoom $_view(zoom)"
1961	}
1962	}
1963	}
1964	}
1965	}
1966
1967	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
1968	set flowobj ""
1969	foreach key [array names _obj2flow] {
1970	set flowobj $_obj2flow($key)
1971	break
1972	}
1973	if { $flowobj == "" } {
1974	return
1975	}
1976	if { [winfo exists $w.frame] } {
1977	destroy $w.frame
1978	}
1979	set inner [frame $w.frame]
1980	blt::table $w \
1981	5,0 $inner -fill both -columnspan 2 -anchor nw
1982	array set hints [$dataobj hints]
1983
1984	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
1985	blt::table $inner \
1986	1,0 $inner.volumes -anchor w \
1987	blt::table configure $inner c0 c1 -resize none
1988	blt::table configure $inner c2 -resize expand
1989
1990	set row 3
1991	set volumes [get]
1992	if { [llength $volumes] > 0 } {
1993	blt::table $inner $row,0 $inner.volumes -anchor w
1994	incr row
1995	}
1996	foreach vol $volumes {
1997	array unset info
1998	array set info $vol
1999	set name $info(name)
2000	if { ![info exists _settings($this-volume-$name)] } {
2001	set _settings($this-volume-$name) $info(hide)
2002	}
2003	checkbutton $inner.vol$row -text $info(label) \
2004	-variable [itcl::scope _settings($this-volume-$name)] \
2005	-onvalue 0 -offvalue 1 \
2006	-command [itcl::code $this volume $key $name] \
2007	-font "Arial 9"
2008	Rappture::Tooltip::for $inner.vol$row $info(description)
2009	blt::table $inner $row,0 $inner.vol$row -anchor w
2010	if { !$_settings($this-volume-$name) } {
2011	$inner.vol$row select
2012	}
2013	incr row
2014	}
2015	blt::table configure $inner r* -resize none
2016	blt::table configure $inner r$row -resize expand
2017	blt::table configure $inner c3 -resize expand
2018	event generate [winfo parent [winfo parent $w]] <Configure>
2019	}
2020
2021	itcl::body Rappture::NanovisViewer::volume { tag name } {
2022	set bool $_settings($this-volume-$name)
2023	SendCmd "volume statue $bool $name"
2024	}
2025

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