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source: trunk/gui/scripts/nanovisviewer.tcl @ 2035

Last change on this file since 2035 was 1839, checked in by gah, 14 years ago
removed -tkwait flag to molvisviewer addmethod
File size: 70.1 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	SendCmd "cutplane position $pos $axis $vols"
917	}
918	SendCmd "volume data state $_settings($this-volume) $vols"
919	set _buffering 0; # Turn off buffering.
920	# Actually write the commands to the server socket. If it fails, we don't
921	# care. We're finished here.
922	blt::busy hold $itk_component(hull)
923	SendBytes $_outbuf;
924	blt::busy release $itk_component(hull)
925	set _outbuf ""; # Clear the buffer.
926	}
927
928	# ----------------------------------------------------------------------
929	# USAGE: CurrentVolumes ?-cutplanes?
930	#
931	# Returns a list of volume server IDs for the current volume being
932	# displayed. This is normally a single ID, but it might be a list
933	# of IDs if the current data object has multiple components.
934	# ----------------------------------------------------------------------
935	itcl::body Rappture::NanovisViewer::CurrentVolumes {{what -all}} {
936	set rlist ""
937	if { $_first == "" } {
938	return
939	}
940	foreach comp [$_first components] {
941	set vol $_first-$comp
942	if { [info exists _serverVols($vol)] && $_serverVols($vol) } {
943	array set style {
944	-cutplanes 1
945	}
946	array set style [lindex [$_first components -style $comp] 0]
947	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
948	lappend rlist $vol
949	}
950	}
951	}
952	return $rlist
953	}
954
955	# ----------------------------------------------------------------------
956	# USAGE: Zoom in
957	# USAGE: Zoom out
958	# USAGE: Zoom reset
959	#
960	# Called automatically when the user clicks on one of the zoom
961	# controls for this widget. Changes the zoom for the current view.
962	# ----------------------------------------------------------------------
963	itcl::body Rappture::NanovisViewer::Zoom {option} {
964	switch -- $option {
965	"in" {
966	set _view(zoom) [expr {$_view(zoom)*1.25}]
967	set _settings($this-zoom) $_view(zoom)
968	}
969	"out" {
970	set _view(zoom) [expr {$_view(zoom)*0.8}]
971	set _settings($this-zoom) $_view(zoom)
972	}
973	"reset" {
974	array set _view {
975	theta 45
976	phi 45
977	psi 0
978	zoom 1.0
979	pan-x 0
980	pan-y 0
981	}
982	if { $_first != "" } {
983	set location [$_first hints camera]
984	if { $location != "" } {
985	array set _view $location
986	}
987	}
988	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
989	SendCmd "camera angle $xyz"
990	PanCamera
991	set _settings($this-theta) $_view(theta)
992	set _settings($this-phi) $_view(phi)
993	set _settings($this-psi) $_view(psi)
994	set _settings($this-pan-x) $_view(pan-x)
995	set _settings($this-pan-y) $_view(pan-y)
996	set _settings($this-zoom) $_view(zoom)
997	}
998	}
999	SendCmd "camera zoom $_view(zoom)"
1000	}
1001
1002	itcl::body Rappture::NanovisViewer::PanCamera {} {
1003	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1004	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1005	set x $_view(pan-x)
1006	set y $_view(pan-y)
1007	SendCmd "camera pan $x $y"
1008	}
1009
1010
1011	# ----------------------------------------------------------------------
1012	# USAGE: Rotate click <x> <y>
1013	# USAGE: Rotate drag <x> <y>
1014	# USAGE: Rotate release <x> <y>
1015	#
1016	# Called automatically when the user clicks/drags/releases in the
1017	# plot area. Moves the plot according to the user's actions.
1018	# ----------------------------------------------------------------------
1019	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1020	switch -- $option {
1021	click {
1022	$itk_component(3dview) configure -cursor fleur
1023	set _click(x) $x
1024	set _click(y) $y
1025	set _click(theta) $_view(theta)
1026	set _click(phi) $_view(phi)
1027	}
1028	drag {
1029	if {[array size _click] == 0} {
1030	Rotate click $x $y
1031	} else {
1032	set w [winfo width $itk_component(3dview)]
1033	set h [winfo height $itk_component(3dview)]
1034	if {$w <= 0 \|\| $h <= 0} {
1035	return
1036	}
1037
1038	if {[catch {
1039	# this fails sometimes for no apparent reason
1040	set dx [expr {double($x-$_click(x))/$w}]
1041	set dy [expr {double($y-$_click(y))/$h}]
1042	}]} {
1043	return
1044	}
1045
1046	#
1047	# Rotate the camera in 3D
1048	#
1049	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1050	# when psi is flipped around, theta moves backwards
1051	set dy [expr {-$dy}]
1052	}
1053	set theta [expr {$_view(theta) - $dy*180}]
1054	while {$theta < 0} { set theta [expr {$theta+180}] }
1055	while {$theta > 180} { set theta [expr {$theta-180}] }
1056
1057	if {abs($theta) >= 30 && abs($theta) <= 160} {
1058	set phi [expr {$_view(phi) - $dx*360}]
1059	while {$phi < 0} { set phi [expr {$phi+360}] }
1060	while {$phi > 360} { set phi [expr {$phi-360}] }
1061	set psi $_view(psi)
1062	} else {
1063	set phi $_view(phi)
1064	set psi [expr {$_view(psi) - $dx*360}]
1065	while {$psi < -180} { set psi [expr {$psi+360}] }
1066	while {$psi > 180} { set psi [expr {$psi-360}] }
1067	}
1068
1069	set _view(theta) $theta
1070	set _view(phi) $phi
1071	set _view(psi) $psi
1072	set xyz [Euler2XYZ $theta $phi $psi]
1073	set _settings($this-theta) $_view(theta)
1074	set _settings($this-phi) $_view(phi)
1075	set _settings($this-psi) $_view(psi)
1076	SendCmd "camera angle $xyz"
1077	set _click(x) $x
1078	set _click(y) $y
1079	}
1080	}
1081	release {
1082	Rotate drag $x $y
1083	$itk_component(3dview) configure -cursor ""
1084	catch {unset _click}
1085	}
1086	default {
1087	error "bad option \"$option\": should be click, drag, release"
1088	}
1089	}
1090	}
1091
1092	# ----------------------------------------------------------------------
1093	# USAGE: $this Pan click x y
1094	# $this Pan drag x y
1095	# $this Pan release x y
1096	#
1097	# Called automatically when the user clicks on one of the zoom
1098	# controls for this widget. Changes the zoom for the current view.
1099	# ----------------------------------------------------------------------
1100	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1101	# Experimental stuff
1102	set w [winfo width $itk_component(3dview)]
1103	set h [winfo height $itk_component(3dview)]
1104	if { $option == "set" } {
1105	set x [expr $x / double($w)]
1106	set y [expr $y / double($h)]
1107	set _view(pan-x) [expr $_view(pan-x) + $x]
1108	set _view(pan-y) [expr $_view(pan-y) + $y]
1109	PanCamera
1110	set _settings($this-pan-x) $_view(pan-x)
1111	set _settings($this-pan-y) $_view(pan-y)
1112	return
1113	}
1114	if { $option == "click" } {
1115	set _click(x) $x
1116	set _click(y) $y
1117	$itk_component(3dview) configure -cursor hand1
1118	}
1119	if { $option == "drag" \|\| $option == "release" } {
1120	set dx [expr ($_click(x) - $x)/double($w)]
1121	set dy [expr ($_click(y) - $y)/double($h)]
1122	set _click(x) $x
1123	set _click(y) $y
1124	set _view(pan-x) [expr $_view(pan-x) - $dx]
1125	set _view(pan-y) [expr $_view(pan-y) - $dy]
1126	PanCamera
1127	set _settings($this-pan-x) $_view(pan-x)
1128	set _settings($this-pan-y) $_view(pan-y)
1129	}
1130	if { $option == "release" } {
1131	$itk_component(3dview) configure -cursor ""
1132	}
1133	}
1134
1135	# ----------------------------------------------------------------------
1136	# USAGE: FixSettings <what> ?<value>?
1137	#
1138	# Used internally to update rendering settings whenever parameters
1139	# change in the popup settings panel. Sends the new settings off
1140	# to the back end.
1141	# ----------------------------------------------------------------------
1142	itcl::body Rappture::NanovisViewer::FixSettings {what {value ""}} {
1143	switch -- $what {
1144	light {
1145	if {[isconnected]} {
1146	set val $_settings($this-light)
1147	set sval [expr {0.1*$val}]
1148	SendCmd "volume shading diffuse $sval"
1149	set sval [expr {sqrt($val+1.0)}]
1150	SendCmd "volume shading specular $sval"
1151	}
1152	}
1153	transp {
1154	if {[isconnected]} {
1155	set val $_settings($this-transp)
1156	set sval [expr {0.2*$val+1}]
1157	SendCmd "volume shading opacity $sval"
1158	}
1159	}
1160	opacity {
1161	if {[isconnected] && [array size _activeTfs] > 0 } {
1162	set val $_settings($this-opacity)
1163	set sval [expr { 0.01 * double($val) }]
1164	foreach tf [array names _activeTfs] {
1165	set _settings($this-$tf-opacity) $sval
1166	set _activeTfs($tf) 0
1167	}
1168	updatetransferfuncs
1169	}
1170	}
1171
1172	thickness {
1173	if {[isconnected] && [array names _activeTfs] > 0 } {
1174	set val $_settings($this-thickness)
1175	# Scale values between 0.00001 and 0.01000
1176	set sval [expr {0.0001*double($val)}]
1177	foreach tf [array names _activeTfs] {
1178	set _settings($this-$tf-thickness) $sval
1179	set _activeTfs($tf) 0
1180	}
1181	updatetransferfuncs
1182	}
1183	}
1184	"outline" {
1185	if {[isconnected]} {
1186	SendCmd "volume outline state $_settings($this-outline)"
1187	}
1188	}
1189	"isosurface" {
1190	if {[isconnected]} {
1191	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1192	}
1193	}
1194	"grid" {
1195	if { [isconnected] } {
1196	SendCmd "grid visible $_settings($this-grid)"
1197	}
1198	}
1199	"axes" {
1200	if { [isconnected] } {
1201	SendCmd "axis visible $_settings($this-axes)"
1202	}
1203	}
1204	"legend" {
1205	if { $_settings($this-legend) } {
1206	blt::table $itk_component(plotarea) \
1207	0,0 $itk_component(3dview) -fill both \
1208	1,0 $itk_component(legend) -fill x
1209	blt::table configure $itk_component(plotarea) r1 -resize none
1210	} else {
1211	blt::table forget $itk_component(legend)
1212	}
1213	}
1214	"volume" {
1215	if { [isconnected] } {
1216	set vols [CurrentVolumes -cutplanes]
1217	SendCmd "volume data state $_settings($this-volume) $vols"
1218	}
1219	}
1220	"xcutplane" - "ycutplane" - "zcutplane" {
1221	set axis [string range $what 0 0]
1222	set bool $_settings($this-$what)
1223	if { [isconnected] } {
1224	set vols [CurrentVolumes -cutplanes]
1225	SendCmd "cutplane state $bool $axis $vols"
1226	}
1227	if { $bool } {
1228	$itk_component(${axis}CutScale) configure -state normal \
1229	-troughcolor white
1230	} else {
1231	$itk_component(${axis}CutScale) configure -state disabled \
1232	-troughcolor grey82
1233	}
1234	}
1235	default {
1236	error "don't know how to fix $what"
1237	}
1238	}
1239	}
1240
1241	# ----------------------------------------------------------------------
1242	# USAGE: FixLegend
1243	#
1244	# Used internally to update the legend area whenever it changes size
1245	# or when the field changes. Asks the server to send a new legend
1246	# for the current field.
1247	# ----------------------------------------------------------------------
1248	itcl::body Rappture::NanovisViewer::FixLegend {} {
1249	set _resizeLegendPending 0
1250	set lineht [font metrics $itk_option(-font) -linespace]
1251	set w [expr {$_width-20}]
1252	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1253	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1254	set vol [lindex [CurrentVolumes] 0]
1255	if { [info exists _vol2style($vol)] } {
1256	SendCmd "legend $_vol2style($vol) $w $h"
1257	}
1258	} else {
1259	# Can't do this as this will remove the items associated with the
1260	# isomarkers.
1261
1262	#$itk_component(legend) delete all
1263	}
1264	}
1265
1266	#
1267	# NameTransferFunc --
1268	#
1269	# Creates a transfer function name based on the <style> settings in the
1270	# library run.xml file. This placeholder will be used later to create
1271	# and send the actual transfer function once the data info has been sent
1272	# to us by the render server. [We won't know the volume limits until the
1273	# server parses the 3D data and sends back the limits via ReceiveData.]
1274	#
1275	# FIXME: The current way we generate transfer-function names completely
1276	# ignores the -markers option. The problem is that we are forced
1277	# to compute the name from an increasing complex set of values:
1278	# color, levels, marker, opacity. I think we're stuck doing it
1279	# now.
1280	#
1281	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj comp } {
1282	array set style {
1283	-color rainbow
1284	-levels 6
1285	-opacity 1.0
1286	}
1287	array set style [lindex [$dataobj components -style $comp] 0]
1288	set tf "$style(-color):$style(-levels):$style(-opacity)"
1289	set _vol2style($dataobj-$comp) $tf
1290	lappend _style2vols($tf) $dataobj-$comp
1291	return $tf
1292	}
1293
1294	#
1295	# ComputeTransferFunc --
1296	#
1297	# Computes and sends the transfer function to the render server. It's
1298	# assumed that the volume data limits are known and that the global
1299	# transfer-functions slider values have be setup. Both parts are
1300	# needed to compute the relative value (location) of the marker, and
1301	# the alpha map of the transfer function.
1302	#
1303	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1304	array set style {
1305	-color rainbow
1306	-levels 6
1307	-opacity 1.0
1308	}
1309	foreach {dataobj comp} [split $_style2vols($tf) -] break
1310	array set style [lindex [$dataobj components -style $comp] 0]
1311
1312
1313	# We have to parse the style attributes for a volume using this
1314	# transfer-function once. This sets up the initial isomarkers for the
1315	# transfer function. The user may add/delete markers, so we have to
1316	# maintain a list of markers for each transfer-function. We use the one
1317	# of the volumes (the first in the list) using the transfer-function as a
1318	# reference.
1319	#
1320	# FIXME: The current way we generate transfer-function names completely
1321	# ignores the -markers option. The problem is that we are forced
1322	# to compute the name from an increasing complex set of values:
1323	# color, levels, marker, opacity. I think the cow's out of the
1324	# barn on this one.
1325
1326	if { ![info exists _isomarkers($tf)] } {
1327	# Have to defer creation of isomarkers until we have data limits
1328	if { [info exists style(-markers)] } {
1329	ParseMarkersOption $tf $style(-markers)
1330	} else {
1331	ParseLevelsOption $tf $style(-levels)
1332	}
1333	}
1334	if {$style(-color) == "rainbow"} {
1335	set style(-color) "white:yellow:green:cyan:blue:magenta"
1336	}
1337	set clist [split $style(-color) :]
1338	set cmap "0.0 [Color2RGB white] "
1339	for {set i 0} {$i < [llength $clist]} {incr i} {
1340	set x [expr {double($i+1)/([llength $clist]+1)}]
1341	set color [lindex $clist $i]
1342	append cmap "$x [Color2RGB $color] "
1343	}
1344	append cmap "1.0 [Color2RGB $color]"
1345
1346	set tag $this-$tf
1347	if { ![info exists _settings($tag-opacity)] } {
1348	set _settings($tag-opacity) $style(-opacity)
1349	}
1350	set max $_settings($tag-opacity)
1351
1352	set isovalues {}
1353	foreach m $_isomarkers($tf) {
1354	lappend isovalues [$m relval]
1355	}
1356	# Sort the isovalues
1357	set isovalues [lsort -real $isovalues]
1358
1359	if { ![info exists _settings($tag-thickness)]} {
1360	set _settings($tag-thickness) 0.05
1361	}
1362	set delta $_settings($tag-thickness)
1363
1364	set first [lindex $isovalues 0]
1365	set last [lindex $isovalues end]
1366	set wmap ""
1367	if { $first == "" \|\| $first != 0.0 } {
1368	lappend wmap 0.0 0.0
1369	}
1370	foreach x $isovalues {
1371	set x1 [expr {$x-$delta-0.00001}]
1372	set x2 [expr {$x-$delta}]
1373	set x3 [expr {$x+$delta}]
1374	set x4 [expr {$x+$delta+0.00001}]
1375	if { $x1 < 0.0 } {
1376	set x1 0.0
1377	} elseif { $x1 > 1.0 } {
1378	set x1 1.0
1379	}
1380	if { $x2 < 0.0 } {
1381	set x2 0.0
1382	} elseif { $x2 > 1.0 } {
1383	set x2 1.0
1384	}
1385	if { $x3 < 0.0 } {
1386	set x3 0.0
1387	} elseif { $x3 > 1.0 } {
1388	set x3 1.0
1389	}
1390	if { $x4 < 0.0 } {
1391	set x4 0.0
1392	} elseif { $x4 > 1.0 } {
1393	set x4 1.0
1394	}
1395	# add spikes in the middle
1396	lappend wmap $x1 0.0
1397	lappend wmap $x2 $max
1398	lappend wmap $x3 $max
1399	lappend wmap $x4 0.0
1400	}
1401	if { $last == "" \|\| $last != 1.0 } {
1402	lappend wmap 1.0 0.0
1403	}
1404	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1405	}
1406
1407	# ----------------------------------------------------------------------
1408	# CONFIGURATION OPTION: -plotbackground
1409	# ----------------------------------------------------------------------
1410	itcl::configbody Rappture::NanovisViewer::plotbackground {
1411	if { [isconnected] } {
1412	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1413	#fix this!
1414	#SendCmd "color background $r $g $b"
1415	}
1416	}
1417
1418	# ----------------------------------------------------------------------
1419	# CONFIGURATION OPTION: -plotforeground
1420	# ----------------------------------------------------------------------
1421	itcl::configbody Rappture::NanovisViewer::plotforeground {
1422	if { [isconnected] } {
1423	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1424	#fix this!
1425	#SendCmd "color background $r $g $b"
1426	}
1427	}
1428
1429	# ----------------------------------------------------------------------
1430	# CONFIGURATION OPTION: -plotoutline
1431	# ----------------------------------------------------------------------
1432	itcl::configbody Rappture::NanovisViewer::plotoutline {
1433	# Must check if we are connected because this routine is called from the
1434	# class body when the -plotoutline itk_option is defined. At that point
1435	# the NanovisViewer class constructor hasn't been called, so we can't
1436	# start sending commands to visualization server.
1437	if { [isconnected] } {
1438	if {"" == $itk_option(-plotoutline)} {
1439	SendCmd "volume outline state off"
1440	} else {
1441	SendCmd "volume outline state on"
1442	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1443	}
1444	}
1445	}
1446
1447	#
1448	# The -levels option takes a single value that represents the number
1449	# of evenly distributed markers based on the current data range. Each
1450	# marker is a relative value from 0.0 to 1.0.
1451	#
1452	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1453	set c $itk_component(legend)
1454	regsub -all "," $levels " " levels
1455	if {[string is int $levels]} {
1456	for {set i 1} { $i <= $levels } {incr i} {
1457	set x [expr {double($i)/($levels+1)}]
1458	set m [Rappture::IsoMarker \#auto $c $this $tf]
1459	$m relval $x
1460	lappend _isomarkers($tf) $m
1461	}
1462	} else {
1463	foreach x $levels {
1464	set m [Rappture::IsoMarker \#auto $c $this $tf]
1465	$m relval $x
1466	lappend _isomarkers($tf) $m
1467	}
1468	}
1469	}
1470
1471	#
1472	# The -markers option takes a list of zero or more values (the values
1473	# may be separated either by spaces or commas) that have the following
1474	# format:
1475	#
1476	# N% Percent of current total data range. Converted to
1477	# to a relative value between 0.0 and 1.0.
1478	# N Absolute value of marker. If the marker is outside of
1479	# the current range, it will be displayed on the outer
1480	# edge of the legends, but it range it represents will
1481	# not be seen.
1482	#
1483	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1484	set c $itk_component(legend)
1485	regsub -all "," $markers " " markers
1486	foreach marker $markers {
1487	set n [scan $marker "%g%s" value suffix]
1488	if { $n == 2 && $suffix == "%" } {
1489	# ${n}% : Set relative value.
1490	set value [expr {$value * 0.01}]
1491	set m [Rappture::IsoMarker \#auto $c $this $tf]
1492	$m relval $value
1493	lappend _isomarkers($tf) $m
1494	} else {
1495	# ${n} : Set absolute value.
1496	set m [Rappture::IsoMarker \#auto $c $this $tf]
1497	$m absval $value
1498	lappend _isomarkers($tf) $m
1499	}
1500	}
1501	}
1502
1503	# ----------------------------------------------------------------------
1504	# USAGE: UndateTransferFuncs
1505	# ----------------------------------------------------------------------
1506	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1507	$_dispatcher event -idle !send_transfunc
1508	}
1509
1510	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1511	if { $_first == "" } {
1512	error "active transfer function isn't set"
1513	}
1514	set vol [lindex [CurrentVolumes] 0]
1515	set tf $_vol2style($vol)
1516	set c $itk_component(legend)
1517	set m [Rappture::IsoMarker \#auto $c $this $tf]
1518	set w [winfo width $c]
1519	$m relval [expr {double($x-10)/($w-20)}]
1520	lappend _isomarkers($tf) $m
1521	updatetransferfuncs
1522	return 1
1523	}
1524
1525	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1526	set tf [$marker transferfunc]
1527	set bool 0
1528	if { [info exists _isomarkers($tf)] } {
1529	set list {}
1530	set marker [namespace tail $marker]
1531	foreach m $_isomarkers($tf) {
1532	set sx [$m screenpos]
1533	if { $m != $marker } {
1534	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1535	$marker relval [$m relval]
1536	itcl::delete object $m
1537	bell
1538	set bool 1
1539	continue
1540	}
1541	}
1542	lappend list $m
1543	}
1544	set _isomarkers($tf) $list
1545	updatetransferfuncs
1546	}
1547	return $bool
1548	}
1549
1550	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1551	set tf [$marker transferfunc]
1552	if { [info exists _isomarkers($tf)] } {
1553	set marker [namespace tail $marker]
1554	foreach m $_isomarkers($tf) {
1555	set sx [$m screenpos]
1556	if { $m != $marker } {
1557	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1558	$m activate $bool
1559	}
1560	}
1561	}
1562	return ""
1563	}
1564
1565	itcl::body Rappture::NanovisViewer::limits { tf } {
1566	set _limits(min) 0.0
1567	set _limits(max) 1.0
1568	if { ![info exists _style2vols($tf)] } {
1569	return [array get _limits]
1570	}
1571	set min ""; set max ""
1572	foreach vol $_style2vols($tf) {
1573	if { ![info exists _serverVols($vol)] } {
1574	continue
1575	}
1576	if { ![info exists _limits($vol-min)] } {
1577	continue
1578	}
1579	if { $min == "" \|\| $min > $_limits($vol-min) } {
1580	set min $_limits($vol-min)
1581	}
1582	if { $max == "" \|\| $max < $_limits($vol-max) } {
1583	set max $_limits($vol-max)
1584	}
1585	}
1586	if { $min != "" } {
1587	set _limits(min) $min
1588	}
1589	if { $max != "" } {
1590	set _limits(max) $max
1591	}
1592	return [array get _limits]
1593	}
1594
1595
1596	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1597	foreach { key value } {
1598	grid 0
1599	axes 1
1600	outline 1
1601	volume 1
1602	legend 1
1603	particles 1
1604	lic 1
1605	} {
1606	set _settings($this-$key) $value
1607	}
1608
1609	set fg [option get $itk_component(hull) font Font]
1610	#set bfg [option get $itk_component(hull) boldFont Font]
1611
1612	set inner [$itk_component(main) insert end \
1613	-title "View Settings" \
1614	-icon [Rappture::icon wrench]]
1615	$inner configure -borderwidth 4
1616
1617	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1618	checkbutton $inner.isosurface \
1619	-text "Isosurface shading" \
1620	-variable [itcl::scope _settings($this-isosurface)] \
1621	-command [itcl::code $this FixSettings isosurface] \
1622	-font "Arial 9"
1623
1624	checkbutton $inner.axes \
1625	-text "Axes" \
1626	-variable [itcl::scope _settings($this-axes)] \
1627	-command [itcl::code $this FixSettings axes] \
1628	-font "Arial 9"
1629
1630	checkbutton $inner.grid \
1631	-text "Grid" \
1632	-variable [itcl::scope _settings($this-grid)] \
1633	-command [itcl::code $this FixSettings grid] \
1634	-font "Arial 9"
1635
1636	checkbutton $inner.outline \
1637	-text "Outline" \
1638	-variable [itcl::scope _settings($this-outline)] \
1639	-command [itcl::code $this FixSettings outline] \
1640	-font "Arial 9"
1641
1642	checkbutton $inner.legend \
1643	-text "Legend" \
1644	-variable [itcl::scope _settings($this-legend)] \
1645	-command [itcl::code $this FixSettings legend] \
1646	-font "Arial 9"
1647
1648	checkbutton $inner.volume \
1649	-text "Volume" \
1650	-variable [itcl::scope _settings($this-volume)] \
1651	-command [itcl::code $this FixSettings volume] \
1652	-font "Arial 9"
1653
1654	blt::table $inner \
1655	0,0 $inner.axes -columnspan 2 -anchor w \
1656	1,0 $inner.grid -columnspan 2 -anchor w \
1657	2,0 $inner.outline -columnspan 2 -anchor w \
1658	3,0 $inner.volume -columnspan 2 -anchor w \
1659	4,0 $inner.legend -columnspan 2 -anchor w
1660
1661	if 0 {
1662	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1663	}
1664	blt::table configure $inner r* -resize none
1665	blt::table configure $inner r5 -resize expand
1666	}
1667
1668	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1669	foreach { key value } {
1670	light 40
1671	transp 50
1672	opacity 100
1673	thickness 350
1674	} {
1675	set _settings($this-$key) $value
1676	}
1677
1678	set inner [$itk_component(main) insert end \
1679	-title "Volume Settings" \
1680	-icon [Rappture::icon volume-on]]
1681	$inner configure -borderwidth 4
1682
1683	set fg [option get $itk_component(hull) font Font]
1684	#set bfg [option get $itk_component(hull) boldFont Font]
1685
1686	checkbutton $inner.vol -text "Show volume" -font $fg \
1687	-variable [itcl::scope _settings($this-volume)] \
1688	-command [itcl::code $this FixSettings volume]
1689	label $inner.shading -text "Shading:" -font $fg
1690
1691	label $inner.dim -text "Dim" -font $fg
1692	::scale $inner.light -from 0 -to 100 -orient horizontal \
1693	-variable [itcl::scope _settings($this-light)] \
1694	-width 10 \
1695	-showvalue off -command [itcl::code $this FixSettings light]
1696	label $inner.bright -text "Bright" -font $fg
1697
1698	label $inner.fog -text "Fog" -font $fg
1699	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1700	-variable [itcl::scope _settings($this-transp)] \
1701	-width 10 \
1702	-showvalue off -command [itcl::code $this FixSettings transp]
1703	label $inner.plastic -text "Plastic" -font $fg
1704
1705	label $inner.clear -text "Clear" -font $fg
1706	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1707	-variable [itcl::scope _settings($this-opacity)] \
1708	-width 10 \
1709	-showvalue off -command [itcl::code $this FixSettings opacity]
1710	label $inner.opaque -text "Opaque" -font $fg
1711
1712	label $inner.thin -text "Thin" -font $fg
1713	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1714	-variable [itcl::scope _settings($this-thickness)] \
1715	-width 10 \
1716	-showvalue off -command [itcl::code $this FixSettings thickness]
1717	label $inner.thick -text "Thick" -font $fg
1718
1719	blt::table $inner \
1720	0,0 $inner.vol -columnspan 4 -anchor w -pady 2 \
1721	1,0 $inner.shading -columnspan 4 -anchor w -pady {10 2} \
1722	2,0 $inner.dim -anchor e -pady 2 \
1723	2,1 $inner.light -columnspan 2 -pady 2 -fill x \
1724	2,3 $inner.bright -anchor w -pady 2 \
1725	3,0 $inner.fog -anchor e -pady 2 \
1726	3,1 $inner.transp -columnspan 2 -pady 2 -fill x \
1727	3,3 $inner.plastic -anchor w -pady 2 \
1728	4,0 $inner.clear -anchor e -pady 2 \
1729	4,1 $inner.opacity -columnspan 2 -pady 2 -fill x\
1730	4,3 $inner.opaque -anchor w -pady 2 \
1731	5,0 $inner.thin -anchor e -pady 2 \
1732	5,1 $inner.thickness -columnspan 2 -pady 2 -fill x\
1733	5,3 $inner.thick -anchor w -pady 2
1734
1735	blt::table configure $inner c0 c1 c3 r* -resize none
1736	blt::table configure $inner r6 -resize expand
1737	}
1738
1739	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1740	set inner [$itk_component(main) insert end \
1741	-title "Cutplane Settings" \
1742	-icon [Rappture::icon cutbutton]]
1743	$inner configure -borderwidth 4
1744
1745	# X-value slicer...
1746	itk_component add xCutButton {
1747	Rappture::PushButton $inner.xbutton \
1748	-onimage [Rappture::icon x-cutplane] \
1749	-offimage [Rappture::icon x-cutplane] \
1750	-command [itcl::code $this FixSettings xcutplane] \
1751	-variable [itcl::scope _settings($this-xcutplane)]
1752	}
1753	Rappture::Tooltip::for $itk_component(xCutButton) \
1754	"Toggle the X cut plane on/off"
1755
1756	itk_component add xCutScale {
1757	::scale $inner.xval -from 100 -to 0 \
1758	-width 10 -orient vertical -showvalue off \
1759	-borderwidth 1 -highlightthickness 0 \
1760	-command [itcl::code $this Slice move x] \
1761	-variable [itcl::scope _settings($this-xcutposition)]
1762	} {
1763	usual
1764	ignore -borderwidth -highlightthickness
1765	}
1766	# Set the default cutplane value before disabling the scale.
1767	$itk_component(xCutScale) set 50
1768	$itk_component(xCutScale) configure -state disabled
1769	Rappture::Tooltip::for $itk_component(xCutScale) \
1770	"@[itcl::code $this SlicerTip x]"
1771
1772	# Y-value slicer...
1773	itk_component add yCutButton {
1774	Rappture::PushButton $inner.ybutton \
1775	-onimage [Rappture::icon y-cutplane] \
1776	-offimage [Rappture::icon y-cutplane] \
1777	-command [itcl::code $this FixSettings ycutplane] \
1778	-variable [itcl::scope _settings($this-ycutplane)]
1779	}
1780	Rappture::Tooltip::for $itk_component(yCutButton) \
1781	"Toggle the Y cut plane on/off"
1782
1783	itk_component add yCutScale {
1784	::scale $inner.yval -from 100 -to 0 \
1785	-width 10 -orient vertical -showvalue off \
1786	-borderwidth 1 -highlightthickness 0 \
1787	-command [itcl::code $this Slice move y] \
1788	-variable [itcl::scope _settings($this-ycutposition)]
1789	} {
1790	usual
1791	ignore -borderwidth -highlightthickness
1792	}
1793	Rappture::Tooltip::for $itk_component(yCutScale) \
1794	"@[itcl::code $this SlicerTip y]"
1795	# Set the default cutplane value before disabling the scale.
1796	$itk_component(yCutScale) set 50
1797	$itk_component(yCutScale) configure -state disabled
1798
1799	# Z-value slicer...
1800	itk_component add zCutButton {
1801	Rappture::PushButton $inner.zbutton \
1802	-onimage [Rappture::icon z-cutplane] \
1803	-offimage [Rappture::icon z-cutplane] \
1804	-command [itcl::code $this FixSettings zcutplane] \
1805	-variable [itcl::scope _settings($this-zcutplane)]
1806	}
1807	Rappture::Tooltip::for $itk_component(zCutButton) \
1808	"Toggle the Z cut plane on/off"
1809
1810	itk_component add zCutScale {
1811	::scale $inner.zval -from 100 -to 0 \
1812	-width 10 -orient vertical -showvalue off \
1813	-borderwidth 1 -highlightthickness 0 \
1814	-command [itcl::code $this Slice move z] \
1815	-variable [itcl::scope _settings($this-zcutposition)]
1816	} {
1817	usual
1818	ignore -borderwidth -highlightthickness
1819	}
1820	$itk_component(zCutScale) set 50
1821	$itk_component(zCutScale) configure -state disabled
1822	#$itk_component(zCutScale) configure -state disabled
1823	Rappture::Tooltip::for $itk_component(zCutScale) \
1824	"@[itcl::code $this SlicerTip z]"
1825
1826	blt::table $inner \
1827	1,1 $itk_component(xCutButton) \
1828	1,2 $itk_component(yCutButton) \
1829	1,3 $itk_component(zCutButton) \
1830	0,1 $itk_component(xCutScale) \
1831	0,2 $itk_component(yCutScale) \
1832	0,3 $itk_component(zCutScale) \
1833
1834	blt::table configure $inner r0 r1 c* -resize none
1835	blt::table configure $inner r2 c4 -resize expand
1836	blt::table configure $inner c0 -width 2
1837	blt::table configure $inner c1 c2 c3 -padx 2
1838	}
1839
1840	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1841	set inner [$itk_component(main) insert end \
1842	-title "Camera Settings" \
1843	-icon [Rappture::icon camera]]
1844	$inner configure -borderwidth 4
1845
1846	set labels { phi theta psi pan-x pan-y zoom }
1847	set row 0
1848	foreach tag $labels {
1849	label $inner.${tag}label -text $tag -font "Arial 9"
1850	entry $inner.${tag} -font "Arial 9" -bg white \
1851	-textvariable [itcl::scope _settings($this-$tag)]
1852	bind $inner.${tag} <KeyPress-Return> \
1853	[itcl::code $this camera set ${tag}]
1854	blt::table $inner \
1855	$row,0 $inner.${tag}label -anchor e -pady 2 \
1856	$row,1 $inner.${tag} -anchor w -pady 2
1857	blt::table configure $inner r$row -resize none
1858	incr row
1859	}
1860	blt::table configure $inner c0 c1 -resize none
1861	blt::table configure $inner c2 -resize expand
1862	blt::table configure $inner r$row -resize expand
1863	}
1864
1865
1866	# ----------------------------------------------------------------------
1867	# USAGE: Slice move x\|y\|z <newval>
1868	#
1869	# Called automatically when the user drags the slider to move the
1870	# cut plane that slices 3D data. Gets the current value from the
1871	# slider and moves the cut plane to the appropriate point in the
1872	# data set.
1873	# ----------------------------------------------------------------------
1874	itcl::body Rappture::NanovisViewer::Slice {option args} {
1875	switch -- $option {
1876	move {
1877	if {[llength $args] != 2} {
1878	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1879	}
1880	set axis [lindex $args 0]
1881	set newval [lindex $args 1]
1882
1883	set newpos [expr {0.01*$newval}]
1884	set vols [CurrentVolumes -cutplanes]
1885	SendCmd "cutplane position $newpos $axis $vols"
1886	}
1887	default {
1888	error "bad option \"$option\": should be axis, move, or volume"
1889	}
1890	}
1891	}
1892
1893	# ----------------------------------------------------------------------
1894	# USAGE: SlicerTip <axis>
1895	#
1896	# Used internally to generate a tooltip for the x/y/z slicer controls.
1897	# Returns a message that includes the current slicer value.
1898	# ----------------------------------------------------------------------
1899	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1900	set val [$itk_component(${axis}CutScale) get]
1901	# set val [expr {0.01*($val-50)
1902	# *($_limits(${axis}max)-$_limits(${axis}min))
1903	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1904	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1905	}
1906
1907
1908	itcl::body Rappture::NanovisViewer::DoResize {} {
1909	SendCmd "screen $_width $_height"
1910	set _resizePending 0
1911	}
1912
1913	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
1914	set _width $w
1915	set _height $h
1916	if { !$_resizePending } {
1917	$_dispatcher event -idle !resize
1918	set _resizePending 1
1919	}
1920	}
1921
1922	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
1923	if { !$_resizeLegendPending } {
1924	$_dispatcher event -idle !legend
1925	set _resizeLegendPending 1
1926	}
1927	}
1928
1929
1930	# camera --
1931	#
1932	itcl::body Rappture::NanovisViewer::camera {option args} {
1933	switch -- $option {
1934	"show" {
1935	puts [array get _view]
1936	}
1937	"set" {
1938	set who [lindex $args 0]
1939	set x $_settings($this-$who)
1940	set code [catch { string is double $x } result]
1941	if { $code != 0 \|\| !$result } {
1942	set _settings($this-$who) $_view($who)
1943	return
1944	}
1945	switch -- $who {
1946	"pan-x" - "pan-y" {
1947	set _view($who) $_settings($this-$who)
1948	PanCamera
1949	}
1950	"phi" - "theta" - "psi" {
1951	set _view($who) $_settings($this-$who)
1952	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1953	SendCmd "camera angle $xyz"
1954	}
1955	"zoom" {
1956	set _view($who) $_settings($this-$who)
1957	SendCmd "camera zoom $_view(zoom)"
1958	}
1959	}
1960	}
1961	}
1962	}
1963
1964	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
1965	set flowobj ""
1966	foreach key [array names _obj2flow] {
1967	set flowobj $_obj2flow($key)
1968	break
1969	}
1970	if { $flowobj == "" } {
1971	return
1972	}
1973	if { [winfo exists $w.frame] } {
1974	destroy $w.frame
1975	}
1976	set inner [frame $w.frame]
1977	blt::table $w \
1978	5,0 $inner -fill both -columnspan 2 -anchor nw
1979	array set hints [$dataobj hints]
1980
1981	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
1982	blt::table $inner \
1983	1,0 $inner.volumes -anchor w \
1984	blt::table configure $inner c0 c1 -resize none
1985	blt::table configure $inner c2 -resize expand
1986
1987	set row 3
1988	set volumes [get]
1989	if { [llength $volumes] > 0 } {
1990	blt::table $inner $row,0 $inner.volumes -anchor w
1991	incr row
1992	}
1993	foreach vol $volumes {
1994	array unset info
1995	array set info $vol
1996	set name $info(name)
1997	if { ![info exists _settings($this-volume-$name)] } {
1998	set _settings($this-volume-$name) $info(hide)
1999	}
2000	checkbutton $inner.vol$row -text $info(label) \
2001	-variable [itcl::scope _settings($this-volume-$name)] \
2002	-onvalue 0 -offvalue 1 \
2003	-command [itcl::code $this volume $key $name] \
2004	-font "Arial 9"
2005	Rappture::Tooltip::for $inner.vol$row $info(description)
2006	blt::table $inner $row,0 $inner.vol$row -anchor w
2007	if { !$_settings($this-volume-$name) } {
2008	$inner.vol$row select
2009	}
2010	incr row
2011	}
2012	blt::table configure $inner r* -resize none
2013	blt::table configure $inner r$row -resize expand
2014	blt::table configure $inner c3 -resize expand
2015	event generate [winfo parent [winfo parent $w]] <Configure>
2016	}
2017
2018	itcl::body Rappture::NanovisViewer::volume { tag name } {
2019	set bool $_settings($this-volume-$name)
2020	SendCmd "volume statue $bool $name"
2021	}
2022

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