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source: trunk/gui/scripts/nanovisviewer.tcl @ 3339

Last change on this file since 3339 was 3339, checked in by gah, 12 years ago
fix nanovis Rebuild (too much in reset)
File size: 72.6 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2
3	# ----------------------------------------------------------------------
4	# COMPONENT: nanovisviewer - 3D volume rendering
5	#
6	# This widget performs volume rendering on 3D scalar/vector datasets.
7	# It connects to the Nanovis server running on a rendering farm,
8	# transmits data, and displays the results.
9	# ======================================================================
10	# AUTHOR: Michael McLennan, Purdue University
11	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
12	#
13	# See the file "license.terms" for information on usage and
14	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
15	# ======================================================================
16	package require Itk
17	package require BLT
18	package require Img
19
20	#
21	# FIXME:
22	# Need to Add DX readers this client to examine the data before
23	# it's sent to the server. This will eliminate 90% of the insanity in
24	# computing the limits of all the volumes. I can rip out all the
25	# "receive data" "send transfer function" event crap.
26	#
27	# This means we can compute the transfer function (relative values) and
28	# draw the legend min/max values without waiting for the information to
29	# come from the server. This will also prevent the flashing that occurs
30	# when a new volume is drawn (using the default transfer function) and
31	# then when the correct transfer function has been sent and linked to
32	# the volume.
33	#
34	option add *NanovisViewer.width 4i widgetDefault
35	option add NanovisViewercursor crosshair widgetDefault
36	option add *NanovisViewer.height 4i widgetDefault
37	option add *NanovisViewer.foreground black widgetDefault
38	option add *NanovisViewer.controlBackground gray widgetDefault
39	option add *NanovisViewer.controlDarkBackground #999999 widgetDefault
40	option add *NanovisViewer.plotBackground black widgetDefault
41	option add *NanovisViewer.plotForeground white widgetDefault
42	option add *NanovisViewer.plotOutline gray widgetDefault
43	option add *NanovisViewer.font \
44	--helvetica-medium-r-normal--12-* widgetDefault
45
46	# must use this name -- plugs into Rappture::resources::load
47	proc NanovisViewer_init_resources {} {
48	Rappture::resources::register \
49	nanovis_server Rappture::NanovisViewer::SetServerList
50	}
51
52	itcl::class Rappture::NanovisViewer {
53	inherit Rappture::VisViewer
54
55	itk_option define -plotforeground plotForeground Foreground ""
56	itk_option define -plotbackground plotBackground Background ""
57	itk_option define -plotoutline plotOutline PlotOutline ""
58
59	constructor { hostlist args } {
60	Rappture::VisViewer::constructor $hostlist
61	} {
62	# defined below
63	}
64	destructor {
65	# defined below
66	}
67	public proc SetServerList { namelist } {
68	Rappture::VisViewer::SetServerList "nanovis" $namelist
69	}
70	public method add {dataobj {settings ""}}
71	public method camera {option args}
72	public method delete {args}
73	public method disconnect {}
74	public method download {option args}
75	public method get {args}
76	public method isconnected {}
77	public method limits { tf }
78	public method overmarker { m x }
79	public method sendto { string }
80	public method parameters {title args} {
81	# do nothing
82	}
83	public method rmdupmarker { m x }
84	public method scale {args}
85	public method updatetransferfuncs {}
86
87	protected method Connect {}
88	protected method CurrentDatasets {{what -all}}
89	protected method Disconnect {}
90	protected method DoResize {}
91	protected method FixLegend {}
92	protected method FixSettings {what {value ""}}
93	protected method Pan {option x y}
94	protected method Rebuild {}
95	protected method ReceiveData { args }
96	protected method ReceiveImage { args }
97	protected method ReceiveLegend { tf vmin vmax size }
98	protected method Rotate {option x y}
99	protected method SendCmd {string}
100	protected method SendTransferFuncs {}
101	protected method Slice {option args}
102	protected method SlicerTip {axis}
103	protected method Zoom {option}
104
105	# The following methods are only used by this class.
106	private method AddIsoMarker { x y }
107	private method BuildCameraTab {}
108	private method BuildCutplanesTab {}
109	private method BuildViewTab {}
110	private method BuildVolumeTab {}
111	private method ComputeTransferFunc { tf }
112	private method EventuallyResize { w h }
113	private method EventuallyResizeLegend { }
114	private method NameTransferFunc { dataobj comp }
115	private method PanCamera {}
116	private method ParseLevelsOption { tf levels }
117	private method ParseMarkersOption { tf markers }
118	private method volume { tag name }
119	private method GetVolumeInfo { w }
120	private method SetOrientation {}
121
122	private variable _outbuf ;# buffer for outgoing commands
123
124	private variable _dlist "" ;# list of data objects
125	private variable _allDataObjs
126	private variable _obj2ovride ;# maps dataobj => style override
127	private variable _serverDatasets ;# contains all the dataobj-component
128	;# to volumes in the server
129	private variable _serverTfs ;# contains all the transfer functions
130	;# in the server.
131	private variable _recvdDatasets ;# list of data objs to send to server
132	private variable _vol2style ;# maps dataobj-component to transfunc
133	private variable _style2datasets ;# maps tf back to list of
134	# dataobj-components using the tf.
135
136	private variable _reset 1; # Connection to server has been reset
137	private variable _click ;# info used for rotate operations
138	private variable _limits ;# autoscale min/max for all axes
139	private variable _view ;# view params for 3D view
140	private variable _isomarkers ;# array of isosurface level values 0..1
141	private variable _settings
142	# Array of transfer functions in server. If 0 the transfer has been
143	# defined but not loaded. If 1 the transfer function has been named
144	# and loaded.
145	private variable _activeTfs
146	private variable _first "" ;# This is the topmost volume.
147	private variable _buffering 0
148
149	# This
150	# indicates which isomarkers and transfer
151	# function to use when changing markers,
152	# opacity, or thickness.
153	common _downloadPopup ;# download options from popup
154	private common _hardcopy
155	private variable _width 0
156	private variable _height 0
157	private variable _resizePending 0
158	private variable _resizeLegendPending 0
159	}
160
161	itk::usual NanovisViewer {
162	keep -background -foreground -cursor -font
163	keep -plotbackground -plotforeground
164	}
165
166	# ----------------------------------------------------------------------
167	# CONSTRUCTOR
168	# ----------------------------------------------------------------------
169	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
170	set _serverType "nanovis"
171
172	# Draw legend event
173	$_dispatcher register !legend
174	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
175
176	# Send transfer functions event
177	$_dispatcher register !send_transfunc
178	$_dispatcher dispatch $this !send_transfunc \
179	"[itcl::code $this SendTransferFuncs]; list"
180
181	# Rebuild event
182	$_dispatcher register !rebuild
183	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
184
185	# Resize event
186	$_dispatcher register !resize
187	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
188
189	set _outbuf ""
190
191	#
192	# Populate parser with commands handle incoming requests
193	#
194	$_parser alias image [itcl::code $this ReceiveImage]
195	$_parser alias legend [itcl::code $this ReceiveLegend]
196	$_parser alias data [itcl::code $this ReceiveData]
197	$_parser alias viserror [itcl::code $this ReceiveError]
198
199	# Initialize the view to some default parameters.
200	array set _view {
201	theta 45
202	phi 45
203	psi 0
204	zoom 1.0
205	pan-x 0
206	pan-y 0
207	}
208	set _limits(vmin) 0.0
209	set _limits(vmax) 1.0
210	set _reset 1
211
212	array set _settings [subst {
213	$this-pan-x $_view(pan-x)
214	$this-pan-y $_view(pan-y)
215	$this-phi $_view(phi)
216	$this-psi $_view(psi)
217	$this-theta $_view(theta)
218	$this-volume 1
219	$this-xcutplane 0
220	$this-xcutposition 0
221	$this-ycutplane 0
222	$this-ycutposition 0
223	$this-zcutplane 0
224	$this-zcutposition 0
225	$this-zoom $_view(zoom)
226	}]
227
228	itk_component add 3dview {
229	label $itk_component(plotarea).view -image $_image(plot) \
230	-highlightthickness 0 -borderwidth 0
231	} {
232	usual
233	ignore -highlightthickness -borderwidth -background
234	}
235	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
236
237	set f [$itk_component(main) component controls]
238	itk_component add reset {
239	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
240	-highlightthickness 0 \
241	-image [Rappture::icon reset-view] \
242	-command [itcl::code $this Zoom reset]
243	} {
244	usual
245	ignore -highlightthickness
246	}
247	pack $itk_component(reset) -side top -padx 2 -pady 2
248	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
249
250	itk_component add zoomin {
251	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
252	-highlightthickness 0 \
253	-image [Rappture::icon zoom-in] \
254	-command [itcl::code $this Zoom in]
255	} {
256	usual
257	ignore -highlightthickness
258	}
259	pack $itk_component(zoomin) -side top -padx 2 -pady 2
260	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
261
262	itk_component add zoomout {
263	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
264	-highlightthickness 0 \
265	-image [Rappture::icon zoom-out] \
266	-command [itcl::code $this Zoom out]
267	} {
268	usual
269	ignore -highlightthickness
270	}
271	pack $itk_component(zoomout) -side top -padx 2 -pady 2
272	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
273
274	itk_component add volume {
275	Rappture::PushButton $f.volume \
276	-onimage [Rappture::icon volume-on] \
277	-offimage [Rappture::icon volume-off] \
278	-command [itcl::code $this FixSettings volume] \
279	-variable [itcl::scope _settings($this-volume)]
280	}
281	$itk_component(volume) select
282	Rappture::Tooltip::for $itk_component(volume) \
283	"Toggle the volume cloud on/off"
284	pack $itk_component(volume) -padx 2 -pady 2
285
286	BuildViewTab
287	BuildVolumeTab
288	BuildCutplanesTab
289	BuildCameraTab
290
291	# Legend
292
293	set _image(legend) [image create photo]
294	itk_component add legend {
295	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
296	} {
297	usual
298	ignore -highlightthickness
299	rename -background -plotbackground plotBackground Background
300	}
301	bind $itk_component(legend) <Configure> \
302	[itcl::code $this EventuallyResizeLegend]
303
304	# Hack around the Tk panewindow. The problem is that the requested
305	# size of the 3d view isn't set until an image is retrieved from
306	# the server. So the panewindow uses the tiny size.
307	set w 10000
308	pack forget $itk_component(3dview)
309	blt::table $itk_component(plotarea) \
310	0,0 $itk_component(3dview) -fill both -reqwidth $w \
311	1,0 $itk_component(legend) -fill x
312	blt::table configure $itk_component(plotarea) r1 -resize none
313
314	# Bindings for rotation via mouse
315	bind $itk_component(3dview) <ButtonPress-1> \
316	[itcl::code $this Rotate click %x %y]
317	bind $itk_component(3dview) <B1-Motion> \
318	[itcl::code $this Rotate drag %x %y]
319	bind $itk_component(3dview) <ButtonRelease-1> \
320	[itcl::code $this Rotate release %x %y]
321	bind $itk_component(3dview) <Configure> \
322	[itcl::code $this EventuallyResize %w %h]
323
324	# Bindings for panning via mouse
325	bind $itk_component(3dview) <ButtonPress-2> \
326	[itcl::code $this Pan click %x %y]
327	bind $itk_component(3dview) <B2-Motion> \
328	[itcl::code $this Pan drag %x %y]
329	bind $itk_component(3dview) <ButtonRelease-2> \
330	[itcl::code $this Pan release %x %y]
331
332	# Bindings for panning via keyboard
333	bind $itk_component(3dview) <KeyPress-Left> \
334	[itcl::code $this Pan set -10 0]
335	bind $itk_component(3dview) <KeyPress-Right> \
336	[itcl::code $this Pan set 10 0]
337	bind $itk_component(3dview) <KeyPress-Up> \
338	[itcl::code $this Pan set 0 -10]
339	bind $itk_component(3dview) <KeyPress-Down> \
340	[itcl::code $this Pan set 0 10]
341	bind $itk_component(3dview) <Shift-KeyPress-Left> \
342	[itcl::code $this Pan set -2 0]
343	bind $itk_component(3dview) <Shift-KeyPress-Right> \
344	[itcl::code $this Pan set 2 0]
345	bind $itk_component(3dview) <Shift-KeyPress-Up> \
346	[itcl::code $this Pan set 0 -2]
347	bind $itk_component(3dview) <Shift-KeyPress-Down> \
348	[itcl::code $this Pan set 0 2]
349
350	# Bindings for zoom via keyboard
351	bind $itk_component(3dview) <KeyPress-Prior> \
352	[itcl::code $this Zoom out]
353	bind $itk_component(3dview) <KeyPress-Next> \
354	[itcl::code $this Zoom in]
355
356	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
357
358	if {[string equal "x11" [tk windowingsystem]]} {
359	# Bindings for zoom via mouse
360	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
361	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
362	}
363
364	set _image(download) [image create photo]
365
366	eval itk_initialize $args
367
368	Connect
369	}
370
371	# ----------------------------------------------------------------------
372	# DESTRUCTOR
373	# ----------------------------------------------------------------------
374	itcl::body Rappture::NanovisViewer::destructor {} {
375	$_dispatcher cancel !rebuild
376	$_dispatcher cancel !send_transfunc
377	$_dispatcher cancel !resize
378	image delete $_image(plot)
379	image delete $_image(legend)
380	image delete $_image(download)
381	array unset _settings $this-*
382	}
383
384	# ----------------------------------------------------------------------
385	# USAGE: add <dataobj> ?<settings>?
386	#
387	# Clients use this to add a data object to the plot. The optional
388	# <settings> are used to configure the plot. Allowed settings are
389	# -color, -brightness, -width, -linestyle, and -raise.
390	# ----------------------------------------------------------------------
391	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
392	array set params {
393	-color auto
394	-width 1
395	-linestyle solid
396	-brightness 0
397	-raise 0
398	-description ""
399	-param ""
400	}
401	foreach {opt val} $settings {
402	if {![info exists params($opt)]} {
403	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
404	}
405	set params($opt) $val
406	}
407	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
408	# can't handle -autocolors yet
409	set params(-color) black
410	}
411	set pos [lsearch -exact $dataobj $_dlist]
412	if {$pos < 0} {
413	lappend _dlist $dataobj
414	set _allDataObjs($dataobj) 1
415	set _obj2ovride($dataobj-color) $params(-color)
416	set _obj2ovride($dataobj-width) $params(-width)
417	set _obj2ovride($dataobj-raise) $params(-raise)
418	$_dispatcher event -idle !rebuild
419	}
420	}
421
422	# ----------------------------------------------------------------------
423	# USAGE: get ?-objects?
424	# USAGE: get ?-image 3dview\|legend?
425	#
426	# Clients use this to query the list of objects being plotted, in
427	# order from bottom to top of this result. The optional "-image"
428	# flag can also request the internal images being shown.
429	# ----------------------------------------------------------------------
430	itcl::body Rappture::NanovisViewer::get {args} {
431	if {[llength $args] == 0} {
432	set args "-objects"
433	}
434
435	set op [lindex $args 0]
436	switch -- $op {
437	-objects {
438	# put the dataobj list in order according to -raise options
439	set dlist $_dlist
440	foreach obj $dlist {
441	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
442	set i [lsearch -exact $dlist $obj]
443	if {$i >= 0} {
444	set dlist [lreplace $dlist $i $i]
445	lappend dlist $obj
446	}
447	}
448	}
449	return $dlist
450	}
451	-image {
452	if {[llength $args] != 2} {
453	error "wrong # args: should be \"get -image 3dview\|legend\""
454	}
455	switch -- [lindex $args end] {
456	3dview {
457	return $_image(plot)
458	}
459	legend {
460	return $_image(legend)
461	}
462	default {
463	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
464	}
465	}
466	}
467	default {
468	error "bad option \"$op\": should be -objects or -image"
469	}
470	}
471	}
472
473	# ----------------------------------------------------------------------
474	# USAGE: delete ?<dataobj1> <dataobj2> ...?
475	#
476	# Clients use this to delete a dataobj from the plot. If no dataobjs
477	# are specified, then all dataobjs are deleted. No data objects are
478	# deleted. They are only removed from the display list.
479	#
480	# ----------------------------------------------------------------------
481	itcl::body Rappture::NanovisViewer::delete {args} {
482	if {[llength $args] == 0} {
483	set args $_dlist
484	}
485	# Delete all specified dataobjs
486	set changed 0
487	foreach dataobj $args {
488	set pos [lsearch -exact $_dlist $dataobj]
489	if { $pos >= 0 } {
490	set _dlist [lreplace $_dlist $pos $pos]
491	array unset _limits $dataobj*
492	array unset _obj2ovride $dataobj-*
493	array unset _vol2style $dataobj-*
494	set changed 1
495	}
496	}
497	# If anything changed, then rebuild the plot
498	if {$changed} {
499	$_dispatcher event -idle !rebuild
500	}
501	}
502
503	# ----------------------------------------------------------------------
504	# USAGE: scale ?<data1> <data2> ...?
505	#
506	# Sets the default limits for the overall plot according to the
507	# limits of the data for all of the given <data> objects. This
508	# accounts for all objects--even those not showing on the screen.
509	# Because of this, the limits are appropriate for all objects as
510	# the user scans through data in the ResultSet viewer.
511	# ----------------------------------------------------------------------
512	itcl::body Rappture::NanovisViewer::scale {args} {
513	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
514	set _limits($val) ""
515	}
516	foreach obj $args {
517	foreach axis {x y z v} {
518
519	foreach { min max } [$obj limits $axis] break
520
521	if {"" != $min && "" != $max} {
522	if {"" == $_limits(${axis}min)} {
523	set _limits(${axis}min) $min
524	set _limits(${axis}max) $max
525	} else {
526	if {$min < $_limits(${axis}min)} {
527	set _limits(${axis}min) $min
528	}
529	if {$max > $_limits(${axis}max)} {
530	set _limits(${axis}max) $max
531	}
532	}
533	}
534	}
535	}
536	}
537
538	# ----------------------------------------------------------------------
539	# USAGE: download coming
540	# USAGE: download controls <downloadCommand>
541	# USAGE: download now
542	#
543	# Clients use this method to create a downloadable representation
544	# of the plot. Returns a list of the form {ext string}, where
545	# "ext" is the file extension (indicating the type of data) and
546	# "string" is the data itself.
547	# ----------------------------------------------------------------------
548	itcl::body Rappture::NanovisViewer::download {option args} {
549	switch $option {
550	coming {
551	if {[catch {
552	blt::winop snap $itk_component(plotarea) $_image(download)
553	}]} {
554	$_image(download) configure -width 1 -height 1
555	$_image(download) put #000000
556	}
557	}
558	controls {
559	# no controls for this download yet
560	return ""
561	}
562	now {
563	# Get the image data (as base64) and decode it back to binary.
564	# This is better than writing to temporary files. When we switch
565	# to the BLT picture image it won't be necessary to decode the
566	# image data.
567	if { [image width $_image(plot)] > 0 &&
568	[image height $_image(plot)] > 0 } {
569	set bytes [$_image(plot) data -format "jpeg -quality 100"]
570	set bytes [Rappture::encoding::decode -as b64 $bytes]
571	return [list .jpg $bytes]
572	}
573	return ""
574	}
575	default {
576	error "bad option \"$option\": should be coming, controls, now"
577	}
578	}
579	}
580
581	# ----------------------------------------------------------------------
582	# USAGE: Connect ?<host:port>,<host:port>...?
583	#
584	# Clients use this method to establish a connection to a new
585	# server, or to reestablish a connection to the previous server.
586	# Any existing connection is automatically closed.
587	# ----------------------------------------------------------------------
588	itcl::body Rappture::NanovisViewer::Connect {} {
589	set _hosts [GetServerList "nanovis"]
590	if { "" == $_hosts } {
591	return 0
592	}
593	set _reset 1
594	set result [VisViewer::Connect $_hosts]
595	if { $result } {
596	set w [winfo width $itk_component(3dview)]
597	set h [winfo height $itk_component(3dview)]
598	EventuallyResize $w $h
599	}
600	return $result
601	}
602
603	#
604	# isconnected --
605	#
606	# Indicates if we are currently connected to the visualization server.
607	#
608	itcl::body Rappture::NanovisViewer::isconnected {} {
609	return [VisViewer::IsConnected]
610	}
611
612	#
613	# disconnect --
614	#
615	itcl::body Rappture::NanovisViewer::disconnect {} {
616	Disconnect
617	}
618
619	#
620	# Disconnect --
621	#
622	# Clients use this method to disconnect from the current rendering
623	# server.
624	#
625	itcl::body Rappture::NanovisViewer::Disconnect {} {
626	VisViewer::Disconnect
627
628	# disconnected -- no more data sitting on server
629	set _outbuf ""
630	array unset _serverDatasets
631	}
632
633	#
634	# sendto --
635	#
636	itcl::body Rappture::NanovisViewer::sendto { bytes } {
637	SendBytes "$bytes\n"
638	}
639
640	#
641	# SendCmd
642	#
643	# Send commands off to the rendering server. If we're currently
644	# sending data objects to the server, buffer the commands to be
645	# sent later.
646	#
647	itcl::body Rappture::NanovisViewer::SendCmd {string} {
648	if { $_buffering } {
649	append _outbuf $string "\n"
650	} else {
651	foreach line [split $string \n] {
652	SendEcho >>line $line
653	}
654	SendBytes "$string\n"
655	}
656	}
657
658
659	# ----------------------------------------------------------------------
660	# USAGE: SendTransferFuncs
661	# ----------------------------------------------------------------------
662	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
663	if { $_first == "" } {
664	puts stderr "first not set"
665	return
666	}
667	# Ensure that the global opacity and thickness settings (in the slider
668	# settings widgets) are used for the active transfer-function. Update
669	# the values in the _settings varible.
670	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
671	# Scale values between 0.00001 and 0.01000
672	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
673
674	foreach tag [CurrentDatasets] {
675	if { ![info exists _serverDatasets($tag)] \|\| !$_serverDatasets($tag) } {
676	# The volume hasn't reached the server yet. How did we get
677	# here?
678	continue
679	}
680	if { ![info exists _vol2style($tag)] } {
681	puts stderr "unknown volume $tag"
682	continue; # How does this happen?
683	}
684	set tf $_vol2style($tag)
685	set _settings($this-$tf-opacity) $opacity
686	set _settings($this-$tf-thickness) $thickness
687	ComputeTransferFunc $tf
688	# FIXME: Need to the send information as to what transfer functions
689	# to update so that we only update the transfer function
690	# as necessary. Right now, all transfer functions are
691	# updated. This makes moving the isomarker slider chunky.
692	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
693	set _activeTfs($tf) 1
694	}
695	SendCmd "volume shading transfunc $tf $tag"
696	}
697	FixLegend
698	}
699
700	# ----------------------------------------------------------------------
701	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
702	#
703	# Invoked automatically whenever the "image" command comes in from
704	# the rendering server. Indicates that binary image data with the
705	# specified <size> will follow.
706	# ----------------------------------------------------------------------
707	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
708	array set info {
709	-token "???"
710	-bytes 0
711	-type image
712	}
713	array set info $args
714	set bytes [ReceiveBytes $info(-bytes)]
715	ReceiveEcho <<line "<read $info(-bytes) bytes"
716	if { $info(-type) == "image" } {
717	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
718	$_image(plot) configure -data $bytes
719	} elseif { $info(type) == "print" } {
720	set tag $this-print-$info(-token)
721	set _hardcopy($tag) $bytes
722	}
723	}
724
725	#
726	# ReceiveLegend --
727	#
728	# The procedure is the response from the render server to each "legend"
729	# command. The server sends back a "legend" command invoked our
730	# the slave interpreter. The purpose is to collect data of the image
731	# representing the legend in the canvas. In addition, the isomarkers
732	# of the active transfer function are displayed.
733	#
734	# I don't know is this is the right place to display the isomarkers.
735	# I don't know all the different paths used to draw the plot. There's
736	# "Rebuild", "add", etc.
737	#
738	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
739	if { ![isconnected] } {
740	return
741	}
742	set bytes [ReceiveBytes $size]
743	$_image(legend) configure -data $bytes
744	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
745
746	set c $itk_component(legend)
747	set w [winfo width $c]
748	set h [winfo height $c]
749	set lx 10
750	set ly [expr {$h - 1}]
751	if {"" == [$c find withtag transfunc]} {
752	$c create image 10 10 -anchor nw \
753	-image $_image(legend) -tags transfunc
754	$c create text $lx $ly -anchor sw \
755	-fill $itk_option(-plotforeground) -tags "limits vmin"
756	$c create text [expr {$w-$lx}] $ly -anchor se \
757	-fill $itk_option(-plotforeground) -tags "limits vmax"
758	$c lower transfunc
759	$c bind transfunc <ButtonRelease-1> \
760	[itcl::code $this AddIsoMarker %x %y]
761	}
762	# Display the markers used by the active transfer function.
763
764	array set limits [limits $tf]
765	$c itemconfigure vmin -text [format %.2g $limits(min)]
766	$c coords vmin $lx $ly
767
768	$c itemconfigure vmax -text [format %.2g $limits(max)]
769	$c coords vmax [expr {$w-$lx}] $ly
770
771	if { [info exists _isomarkers($tf)] } {
772	foreach m $_isomarkers($tf) {
773	$m visible yes
774	}
775	}
776
777	# The colormap may have changed. Resync the slicers with the colormap.
778	set datasets [CurrentDatasets -cutplanes]
779	SendCmd "volume data state $_settings($this-volume) $datasets"
780
781	# Adjust the cutplane for only the first component in the topmost volume
782	# (i.e. the first volume designated in the field).
783	set tag [lindex $datasets 0]
784	foreach axis {x y z} {
785	# Turn off cutplanes for all volumes
786	SendCmd "cutplane state 0 $axis"
787	if { $_settings($this-${axis}cutplane) } {
788	# Turn on cutplane for this particular volume and set the position
789	SendCmd "cutplane state 1 $axis $tag"
790	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
791	SendCmd "cutplane position $pos $axis $tag"
792	}
793	}
794	}
795
796	#
797	# ReceiveData --
798	#
799	# The procedure is the response from the render server to each "data
800	# follows" command. The server sends back a "data" command invoked our
801	# the slave interpreter. The purpose is to collect the min/max of the
802	# volume sent to the render server. Since the client (nanovisviewer)
803	# doesn't parse 3D data formats, we rely on the server (nanovis) to
804	# tell us what the limits are. Once we've received the limits to all
805	# the data we've sent (tracked by _recvdDatasets) we can then determine
806	# what the transfer functions are for these volumes.
807	#
808	#
809	# Note: There is a considerable tradeoff in having the server report
810	# back what the data limits are. It means that much of the code
811	# having to do with transfer-functions has to wait for the data
812	# to come back, since the isomarkers are calculated based upon
813	# the data limits. The client code is much messier because of
814	# this. The alternative is to parse any of the 3D formats on the
815	# client side.
816	#
817	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
818	if { ![isconnected] } {
819	return
820	}
821	# Arguments from server are name value pairs. Stuff them in an array.
822	array set info $args
823
824	set tag $info(tag)
825	set parts [split $tag -]
826
827	#
828	# Volumes don't exist until we're told about them.
829	#
830	set dataobj [lindex $parts 0]
831	set _serverDatasets($tag) 1
832	if { $_settings($this-volume) && $dataobj == $_first } {
833	SendCmd "volume state 1 $tag"
834	}
835	set _limits($tag-min) $info(min); # Minimum value of the volume.
836	set _limits($tag-max) $info(max); # Maximum value of the volume.
837	set _limits(vmin) $info(vmin); # Overall minimum value.
838	set _limits(vmax) $info(vmax); # Overall maximum value.
839
840	unset _recvdDatasets($tag)
841	if { [array size _recvdDatasets] == 0 } {
842	# The active transfer function is by default the first component of
843	# the first data object. This assumes that the data is always
844	# successfully transferred.
845	updatetransferfuncs
846	}
847	}
848
849	# ----------------------------------------------------------------------
850	# USAGE: Rebuild
851	#
852	# Called automatically whenever something changes that affects the
853	# data in the widget. Clears any existing data and rebuilds the
854	# widget to display new data.
855	# ----------------------------------------------------------------------
856	itcl::body Rappture::NanovisViewer::Rebuild {} {
857
858	# Turn on buffering of commands to the server. We don't want to
859	# be preempted by a server disconnect/reconnect (which automatically
860	# generates a new call to Rebuild).
861	set _buffering 1
862
863	# Hide all the isomarkers. Can't remove them. Have to remember the
864	# settings since the user may have created/deleted/moved markers.
865
866	foreach tf [array names _isomarkers] {
867	foreach m $_isomarkers($tf) {
868	$m visible no
869	}
870	}
871
872	set w [winfo width $itk_component(3dview)]
873	set h [winfo height $itk_component(3dview)]
874	EventuallyResize $w $h
875
876	foreach dataobj [get] {
877	foreach cname [$dataobj components] {
878	set tag $dataobj-$cname
879	if { ![info exists _serverDatasets($tag)] } {
880	# Send the data as one huge base64-encoded mess -- yuck!
881	set data [$dataobj values $cname]
882	set nbytes [string length $data]
883	append _outbuf "volume data follows $nbytes $tag\n"
884	append _outbuf $data
885	set _recvdDatasets($tag) 1
886	set _serverDatasets($tag) 0
887	}
888	NameTransferFunc $dataobj $cname
889	}
890	}
891	set _first [lindex [get] 0]
892	if { $_reset } {
893	#
894	# Reset the camera and other view parameters
895	#
896
897	set _settings($this-theta) $_view(theta)
898	set _settings($this-phi) $_view(phi)
899	set _settings($this-psi) $_view(psi)
900	set _settings($this-pan-x) $_view(pan-x)
901	set _settings($this-pan-y) $_view(pan-y)
902	set _settings($this-zoom) $_view(zoom)
903
904	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
905	SendCmd "camera angle $xyz"
906	PanCamera
907	SendCmd "camera zoom $_view(zoom)"
908	FixSettings light
909	FixSettings transp
910	FixSettings isosurface
911	FixSettings grid
912	FixSettings axes
913	FixSettings outline
914
915	foreach axis {x y z} {
916	# Turn off cutplanes for all volumes
917	SendCmd "cutplane state 0 $axis"
918	}
919	if {"" != $_first} {
920	set axis [$_first hints updir]
921	if { "" != $axis } {
922	SendCmd "up $axis"
923	}
924	set location [$_first hints camera]
925	if { $location != "" } {
926	array set _view $location
927	}
928	if 1 {
929	# Tell the server the name of the tool, the version, and
930	# dataset that we are rendering. Have to do it here because
931	# we don't know what data objects are using the renderer until
932	# be get here.
933	global env
934
935	lappend out "hub" [exec hostname]
936	lappend out "viewer" "nanovisviewer"
937	if { [info exists env(USER)] } {
938	lappend out "user" $env(USER)
939	}
940	if { [info exists env(SESSION)] } {
941	lappend out "session" $env(SESSION)
942	}
943	lappend out "tool_id" [$_first hints toolId]
944	lappend out "tool_name" [$_first hints toolName]
945	lappend out "tool_version" [$_first hints toolRevision]
946	lappend out "tool_title" [$_first hints toolTitle]
947	lappend out "tool_dataset" [$_first hints label]
948	SendCmd "clientinfo [list $out]"
949	}
950	}
951	}
952	# nothing to send -- activate the proper ivol
953	SendCmd "volume state 0"
954	if {"" != $_first} {
955	set datasets [array names _serverDatasets $_first-*]
956	if { $datasets != "" } {
957	SendCmd "volume state 1 $datasets"
958	}
959	# If the first volume already exists on the server, then make sure
960	# we display the proper transfer function in the legend.
961	set cname [lindex [$_first components] 0]
962	if { [info exists _serverDatasets($_first-$cname)] } {
963	updatetransferfuncs
964	}
965	}
966	set _buffering 0; # Turn off buffering.
967	# Actually write the commands to the server socket. If it fails, we don't
968	# care. We're finished here.
969	blt::busy hold $itk_component(hull)
970	SendBytes $_outbuf;
971	blt::busy release $itk_component(hull)
972	set _reset 0
973	set _outbuf ""; # Clear the buffer.
974	}
975
976	# ----------------------------------------------------------------------
977	# USAGE: CurrentDatasets ?-cutplanes?
978	#
979	# Returns a list of volume server IDs for the current volume being
980	# displayed. This is normally a single ID, but it might be a list
981	# of IDs if the current data object has multiple components.
982	# ----------------------------------------------------------------------
983	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
984	set rlist ""
985	if { $_first == "" } {
986	return
987	}
988	foreach cname [$_first components] {
989	set tag $_first-$cname
990	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
991	array set style {
992	-cutplanes 1
993	}
994	array set style [lindex [$_first components -style $cname] 0]
995	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
996	lappend rlist $tag
997	}
998	}
999	}
1000	return $rlist
1001	}
1002
1003	# ----------------------------------------------------------------------
1004	# USAGE: Zoom in
1005	# USAGE: Zoom out
1006	# USAGE: Zoom reset
1007	#
1008	# Called automatically when the user clicks on one of the zoom
1009	# controls for this widget. Changes the zoom for the current view.
1010	# ----------------------------------------------------------------------
1011	itcl::body Rappture::NanovisViewer::Zoom {option} {
1012	switch -- $option {
1013	"in" {
1014	set _view(zoom) [expr {$_view(zoom)*1.25}]
1015	set _settings($this-zoom) $_view(zoom)
1016	}
1017	"out" {
1018	set _view(zoom) [expr {$_view(zoom)*0.8}]
1019	set _settings($this-zoom) $_view(zoom)
1020	}
1021	"reset" {
1022	array set _view {
1023	theta 45
1024	phi 45
1025	psi 0
1026	zoom 1.0
1027	pan-x 0
1028	pan-y 0
1029	}
1030	if { $_first != "" } {
1031	set location [$_first hints camera]
1032	if { $location != "" } {
1033	array set _view $location
1034	}
1035	}
1036	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1037	SendCmd "camera angle $xyz"
1038	PanCamera
1039	set _settings($this-theta) $_view(theta)
1040	set _settings($this-phi) $_view(phi)
1041	set _settings($this-psi) $_view(psi)
1042	set _settings($this-pan-x) $_view(pan-x)
1043	set _settings($this-pan-y) $_view(pan-y)
1044	set _settings($this-zoom) $_view(zoom)
1045	}
1046	}
1047	SendCmd "camera zoom $_view(zoom)"
1048	}
1049
1050	itcl::body Rappture::NanovisViewer::PanCamera {} {
1051	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1052	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1053	set x $_view(pan-x)
1054	set y $_view(pan-y)
1055	SendCmd "camera pan $x $y"
1056	}
1057
1058
1059	# ----------------------------------------------------------------------
1060	# USAGE: Rotate click <x> <y>
1061	# USAGE: Rotate drag <x> <y>
1062	# USAGE: Rotate release <x> <y>
1063	#
1064	# Called automatically when the user clicks/drags/releases in the
1065	# plot area. Moves the plot according to the user's actions.
1066	# ----------------------------------------------------------------------
1067	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1068	switch -- $option {
1069	click {
1070	$itk_component(3dview) configure -cursor fleur
1071	set _click(x) $x
1072	set _click(y) $y
1073	set _click(theta) $_view(theta)
1074	set _click(phi) $_view(phi)
1075	}
1076	drag {
1077	if {[array size _click] == 0} {
1078	Rotate click $x $y
1079	} else {
1080	set w [winfo width $itk_component(3dview)]
1081	set h [winfo height $itk_component(3dview)]
1082	if {$w <= 0 \|\| $h <= 0} {
1083	return
1084	}
1085
1086	if {[catch {
1087	# this fails sometimes for no apparent reason
1088	set dx [expr {double($x-$_click(x))/$w}]
1089	set dy [expr {double($y-$_click(y))/$h}]
1090	}]} {
1091	return
1092	}
1093
1094	#
1095	# Rotate the camera in 3D
1096	#
1097	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1098	# when psi is flipped around, theta moves backwards
1099	set dy [expr {-$dy}]
1100	}
1101	set theta [expr {$_view(theta) - $dy*180}]
1102	while {$theta < 0} { set theta [expr {$theta+180}] }
1103	while {$theta > 180} { set theta [expr {$theta-180}] }
1104
1105	if {abs($theta) >= 30 && abs($theta) <= 160} {
1106	set phi [expr {$_view(phi) - $dx*360}]
1107	while {$phi < 0} { set phi [expr {$phi+360}] }
1108	while {$phi > 360} { set phi [expr {$phi-360}] }
1109	set psi $_view(psi)
1110	} else {
1111	set phi $_view(phi)
1112	set psi [expr {$_view(psi) - $dx*360}]
1113	while {$psi < -180} { set psi [expr {$psi+360}] }
1114	while {$psi > 180} { set psi [expr {$psi-360}] }
1115	}
1116
1117	set _view(theta) $theta
1118	set _view(phi) $phi
1119	set _view(psi) $psi
1120	set xyz [Euler2XYZ $theta $phi $psi]
1121	set _settings($this-theta) $_view(theta)
1122	set _settings($this-phi) $_view(phi)
1123	set _settings($this-psi) $_view(psi)
1124	SendCmd "camera angle $xyz"
1125	set _click(x) $x
1126	set _click(y) $y
1127	}
1128	}
1129	release {
1130	Rotate drag $x $y
1131	$itk_component(3dview) configure -cursor ""
1132	catch {unset _click}
1133	}
1134	default {
1135	error "bad option \"$option\": should be click, drag, release"
1136	}
1137	}
1138	}
1139
1140	# ----------------------------------------------------------------------
1141	# USAGE: $this Pan click x y
1142	# $this Pan drag x y
1143	# $this Pan release x y
1144	#
1145	# Called automatically when the user clicks on one of the zoom
1146	# controls for this widget. Changes the zoom for the current view.
1147	# ----------------------------------------------------------------------
1148	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1149	# Experimental stuff
1150	set w [winfo width $itk_component(3dview)]
1151	set h [winfo height $itk_component(3dview)]
1152	if { $option == "set" } {
1153	set x [expr $x / double($w)]
1154	set y [expr $y / double($h)]
1155	set _view(pan-x) [expr $_view(pan-x) + $x]
1156	set _view(pan-y) [expr $_view(pan-y) + $y]
1157	PanCamera
1158	set _settings($this-pan-x) $_view(pan-x)
1159	set _settings($this-pan-y) $_view(pan-y)
1160	return
1161	}
1162	if { $option == "click" } {
1163	set _click(x) $x
1164	set _click(y) $y
1165	$itk_component(3dview) configure -cursor hand1
1166	}
1167	if { $option == "drag" \|\| $option == "release" } {
1168	set dx [expr ($_click(x) - $x)/double($w)]
1169	set dy [expr ($_click(y) - $y)/double($h)]
1170	set _click(x) $x
1171	set _click(y) $y
1172	set _view(pan-x) [expr $_view(pan-x) - $dx]
1173	set _view(pan-y) [expr $_view(pan-y) - $dy]
1174	PanCamera
1175	set _settings($this-pan-x) $_view(pan-x)
1176	set _settings($this-pan-y) $_view(pan-y)
1177	}
1178	if { $option == "release" } {
1179	$itk_component(3dview) configure -cursor ""
1180	}
1181	}
1182
1183	# ----------------------------------------------------------------------
1184	# USAGE: FixSettings <what> ?<value>?
1185	#
1186	# Used internally to update rendering settings whenever parameters
1187	# change in the popup settings panel. Sends the new settings off
1188	# to the back end.
1189	# ----------------------------------------------------------------------
1190	itcl::body Rappture::NanovisViewer::FixSettings {what {value ""}} {
1191	switch -- $what {
1192	light {
1193	if {[isconnected]} {
1194	set val $_settings($this-light)
1195	set sval [expr {0.01*$val}]
1196	SendCmd "volume shading diffuse $sval"
1197	set sval [expr {sqrt($val+1.0)}]
1198	SendCmd "volume shading specular $sval"
1199	}
1200	}
1201	transp {
1202	if {[isconnected]} {
1203	set val $_settings($this-transp)
1204	set sval [expr {0.2*$val+1}]
1205	SendCmd "volume shading opacity $sval"
1206	}
1207	}
1208	opacity {
1209	if {[isconnected] && [array size _activeTfs] > 0 } {
1210	set val $_settings($this-opacity)
1211	set sval [expr { 0.01 * double($val) }]
1212	foreach tf [array names _activeTfs] {
1213	set _settings($this-$tf-opacity) $sval
1214	set _activeTfs($tf) 0
1215	}
1216	updatetransferfuncs
1217	}
1218	}
1219
1220	thickness {
1221	if {[isconnected] && [array names _activeTfs] > 0 } {
1222	set val $_settings($this-thickness)
1223	# Scale values between 0.00001 and 0.01000
1224	set sval [expr {0.0001*double($val)}]
1225	foreach tf [array names _activeTfs] {
1226	set _settings($this-$tf-thickness) $sval
1227	set _activeTfs($tf) 0
1228	}
1229	updatetransferfuncs
1230	}
1231	}
1232	"outline" {
1233	if {[isconnected]} {
1234	SendCmd "volume outline state $_settings($this-outline)"
1235	}
1236	}
1237	"isosurface" {
1238	if {[isconnected]} {
1239	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1240	}
1241	}
1242	"grid" {
1243	if { [isconnected] } {
1244	SendCmd "grid visible $_settings($this-grid)"
1245	}
1246	}
1247	"axes" {
1248	if { [isconnected] } {
1249	SendCmd "axis visible $_settings($this-axes)"
1250	}
1251	}
1252	"legend" {
1253	if { $_settings($this-legend) } {
1254	blt::table $itk_component(plotarea) \
1255	0,0 $itk_component(3dview) -fill both \
1256	1,0 $itk_component(legend) -fill x
1257	blt::table configure $itk_component(plotarea) r1 -resize none
1258	} else {
1259	blt::table forget $itk_component(legend)
1260	}
1261	}
1262	"volume" {
1263	if { [isconnected] } {
1264	set datasets [CurrentDatasets -cutplanes]
1265	SendCmd "volume data state $_settings($this-volume) $datasets"
1266	}
1267	}
1268	"xcutplane" - "ycutplane" - "zcutplane" {
1269	set axis [string range $what 0 0]
1270	set bool $_settings($this-$what)
1271	if { [isconnected] } {
1272	set datasets [CurrentDatasets -cutplanes]
1273	set tag [lindex $datasets 0]
1274	SendCmd "cutplane state $bool $axis $tag"
1275	}
1276	if { $bool } {
1277	$itk_component(${axis}CutScale) configure -state normal \
1278	-troughcolor white
1279	} else {
1280	$itk_component(${axis}CutScale) configure -state disabled \
1281	-troughcolor grey82
1282	}
1283	}
1284	default {
1285	error "don't know how to fix $what"
1286	}
1287	}
1288	}
1289
1290	# ----------------------------------------------------------------------
1291	# USAGE: FixLegend
1292	#
1293	# Used internally to update the legend area whenever it changes size
1294	# or when the field changes. Asks the server to send a new legend
1295	# for the current field.
1296	# ----------------------------------------------------------------------
1297	itcl::body Rappture::NanovisViewer::FixLegend {} {
1298	set _resizeLegendPending 0
1299	set lineht [font metrics $itk_option(-font) -linespace]
1300	set w [expr {$_width-20}]
1301	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1302	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1303	set tag [lindex [CurrentDatasets] 0]
1304	if { [info exists _vol2style($tag)] } {
1305	SendCmd "legend $_vol2style($tag) $w $h"
1306	}
1307	} else {
1308	# Can't do this as this will remove the items associated with the
1309	# isomarkers.
1310
1311	#$itk_component(legend) delete all
1312	}
1313	}
1314
1315	#
1316	# NameTransferFunc --
1317	#
1318	# Creates a transfer function name based on the <style> settings in the
1319	# library run.xml file. This placeholder will be used later to create
1320	# and send the actual transfer function once the data info has been sent
1321	# to us by the render server. [We won't know the volume limits until the
1322	# server parses the 3D data and sends back the limits via ReceiveData.]
1323	#
1324	# FIXME: The current way we generate transfer-function names completely
1325	# ignores the -markers option. The problem is that we are forced
1326	# to compute the name from an increasing complex set of values:
1327	# color, levels, marker, opacity. I think we're stuck doing it
1328	# now.
1329	#
1330	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj cname } {
1331	array set style {
1332	-color rainbow
1333	-levels 6
1334	-opacity 1.0
1335	}
1336	set tag $dataobj-$cname
1337	array set style [lindex [$dataobj components -style $cname] 0]
1338	set tf "$style(-color):$style(-levels):$style(-opacity)"
1339	set _vol2style($tag) $tf
1340	lappend _style2datasets($tf) $tag
1341	return $tf
1342	}
1343
1344	#
1345	# ComputeTransferFunc --
1346	#
1347	# Computes and sends the transfer function to the render server. It's
1348	# assumed that the volume data limits are known and that the global
1349	# transfer-functions slider values have be setup. Both parts are
1350	# needed to compute the relative value (location) of the marker, and
1351	# the alpha map of the transfer function.
1352	#
1353	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1354	array set style {
1355	-color rainbow
1356	-levels 6
1357	-opacity 1.0
1358	}
1359	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1360	array set style [lindex [$dataobj components -style $cname] 0]
1361
1362
1363	# We have to parse the style attributes for a volume using this
1364	# transfer-function once. This sets up the initial isomarkers for the
1365	# transfer function. The user may add/delete markers, so we have to
1366	# maintain a list of markers for each transfer-function. We use the one
1367	# of the volumes (the first in the list) using the transfer-function as a
1368	# reference.
1369	#
1370	# FIXME: The current way we generate transfer-function names completely
1371	# ignores the -markers option. The problem is that we are forced
1372	# to compute the name from an increasing complex set of values:
1373	# color, levels, marker, opacity. I think the cow's out of the
1374	# barn on this one.
1375
1376	if { ![info exists _isomarkers($tf)] } {
1377	# Have to defer creation of isomarkers until we have data limits
1378	if { [info exists style(-markers)] } {
1379	ParseMarkersOption $tf $style(-markers)
1380	} else {
1381	ParseLevelsOption $tf $style(-levels)
1382	}
1383	}
1384	if {$style(-color) == "rainbow"} {
1385	set style(-color) "white:yellow:green:cyan:blue:magenta"
1386	}
1387	set clist [split $style(-color) :]
1388	set cmap "0.0 [Color2RGB white] "
1389	for {set i 0} {$i < [llength $clist]} {incr i} {
1390	set x [expr {double($i+1)/([llength $clist]+1)}]
1391	set color [lindex $clist $i]
1392	append cmap "$x [Color2RGB $color] "
1393	}
1394	append cmap "1.0 [Color2RGB $color]"
1395
1396	set tag $this-$tf
1397	if { ![info exists _settings($tag-opacity)] } {
1398	set _settings($tag-opacity) $style(-opacity)
1399	}
1400	set max $_settings($tag-opacity)
1401
1402	set isovalues {}
1403	foreach m $_isomarkers($tf) {
1404	lappend isovalues [$m relval]
1405	}
1406	# Sort the isovalues
1407	set isovalues [lsort -real $isovalues]
1408
1409	if { ![info exists _settings($tag-thickness)]} {
1410	set _settings($tag-thickness) 0.05
1411	}
1412	set delta $_settings($tag-thickness)
1413
1414	set first [lindex $isovalues 0]
1415	set last [lindex $isovalues end]
1416	set wmap ""
1417	if { $first == "" \|\| $first != 0.0 } {
1418	lappend wmap 0.0 0.0
1419	}
1420	foreach x $isovalues {
1421	set x1 [expr {$x-$delta-0.00001}]
1422	set x2 [expr {$x-$delta}]
1423	set x3 [expr {$x+$delta}]
1424	set x4 [expr {$x+$delta+0.00001}]
1425	if { $x1 < 0.0 } {
1426	set x1 0.0
1427	} elseif { $x1 > 1.0 } {
1428	set x1 1.0
1429	}
1430	if { $x2 < 0.0 } {
1431	set x2 0.0
1432	} elseif { $x2 > 1.0 } {
1433	set x2 1.0
1434	}
1435	if { $x3 < 0.0 } {
1436	set x3 0.0
1437	} elseif { $x3 > 1.0 } {
1438	set x3 1.0
1439	}
1440	if { $x4 < 0.0 } {
1441	set x4 0.0
1442	} elseif { $x4 > 1.0 } {
1443	set x4 1.0
1444	}
1445	# add spikes in the middle
1446	lappend wmap $x1 0.0
1447	lappend wmap $x2 $max
1448	lappend wmap $x3 $max
1449	lappend wmap $x4 0.0
1450	}
1451	if { $last == "" \|\| $last != 1.0 } {
1452	lappend wmap 1.0 0.0
1453	}
1454	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1455	}
1456
1457	# ----------------------------------------------------------------------
1458	# CONFIGURATION OPTION: -plotbackground
1459	# ----------------------------------------------------------------------
1460	itcl::configbody Rappture::NanovisViewer::plotbackground {
1461	if { [isconnected] } {
1462	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1463	#fix this!
1464	#SendCmd "color background $r $g $b"
1465	}
1466	}
1467
1468	# ----------------------------------------------------------------------
1469	# CONFIGURATION OPTION: -plotforeground
1470	# ----------------------------------------------------------------------
1471	itcl::configbody Rappture::NanovisViewer::plotforeground {
1472	if { [isconnected] } {
1473	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1474	#fix this!
1475	#SendCmd "color background $r $g $b"
1476	}
1477	}
1478
1479	# ----------------------------------------------------------------------
1480	# CONFIGURATION OPTION: -plotoutline
1481	# ----------------------------------------------------------------------
1482	itcl::configbody Rappture::NanovisViewer::plotoutline {
1483	# Must check if we are connected because this routine is called from the
1484	# class body when the -plotoutline itk_option is defined. At that point
1485	# the NanovisViewer class constructor hasn't been called, so we can't
1486	# start sending commands to visualization server.
1487	if { [isconnected] } {
1488	if {"" == $itk_option(-plotoutline)} {
1489	SendCmd "volume outline state off"
1490	} else {
1491	SendCmd "volume outline state on"
1492	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1493	}
1494	}
1495	}
1496
1497	#
1498	# The -levels option takes a single value that represents the number
1499	# of evenly distributed markers based on the current data range. Each
1500	# marker is a relative value from 0.0 to 1.0.
1501	#
1502	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1503	set c $itk_component(legend)
1504	regsub -all "," $levels " " levels
1505	if {[string is int $levels]} {
1506	for {set i 1} { $i <= $levels } {incr i} {
1507	set x [expr {double($i)/($levels+1)}]
1508	set m [Rappture::IsoMarker \#auto $c $this $tf]
1509	$m relval $x
1510	lappend _isomarkers($tf) $m
1511	}
1512	} else {
1513	foreach x $levels {
1514	set m [Rappture::IsoMarker \#auto $c $this $tf]
1515	$m relval $x
1516	lappend _isomarkers($tf) $m
1517	}
1518	}
1519	}
1520
1521	#
1522	# The -markers option takes a list of zero or more values (the values
1523	# may be separated either by spaces or commas) that have the following
1524	# format:
1525	#
1526	# N% Percent of current total data range. Converted to
1527	# to a relative value between 0.0 and 1.0.
1528	# N Absolute value of marker. If the marker is outside of
1529	# the current range, it will be displayed on the outer
1530	# edge of the legends, but it range it represents will
1531	# not be seen.
1532	#
1533	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1534	set c $itk_component(legend)
1535	regsub -all "," $markers " " markers
1536	foreach marker $markers {
1537	set n [scan $marker "%g%s" value suffix]
1538	if { $n == 2 && $suffix == "%" } {
1539	# ${n}% : Set relative value.
1540	set value [expr {$value * 0.01}]
1541	set m [Rappture::IsoMarker \#auto $c $this $tf]
1542	$m relval $value
1543	lappend _isomarkers($tf) $m
1544	} else {
1545	# ${n} : Set absolute value.
1546	set m [Rappture::IsoMarker \#auto $c $this $tf]
1547	$m absval $value
1548	lappend _isomarkers($tf) $m
1549	}
1550	}
1551	}
1552
1553	# ----------------------------------------------------------------------
1554	# USAGE: UndateTransferFuncs
1555	# ----------------------------------------------------------------------
1556	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1557	$_dispatcher event -idle !send_transfunc
1558	}
1559
1560	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1561	if { $_first == "" } {
1562	error "active transfer function isn't set"
1563	}
1564	set tag [lindex [CurrentDatasets] 0]
1565	set tf $_vol2style($tag)
1566	set c $itk_component(legend)
1567	set m [Rappture::IsoMarker \#auto $c $this $tf]
1568	set w [winfo width $c]
1569	$m relval [expr {double($x-10)/($w-20)}]
1570	lappend _isomarkers($tf) $m
1571	updatetransferfuncs
1572	return 1
1573	}
1574
1575	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1576	set tf [$marker transferfunc]
1577	set bool 0
1578	if { [info exists _isomarkers($tf)] } {
1579	set list {}
1580	set marker [namespace tail $marker]
1581	foreach m $_isomarkers($tf) {
1582	set sx [$m screenpos]
1583	if { $m != $marker } {
1584	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1585	$marker relval [$m relval]
1586	itcl::delete object $m
1587	bell
1588	set bool 1
1589	continue
1590	}
1591	}
1592	lappend list $m
1593	}
1594	set _isomarkers($tf) $list
1595	updatetransferfuncs
1596	}
1597	return $bool
1598	}
1599
1600	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1601	set tf [$marker transferfunc]
1602	if { [info exists _isomarkers($tf)] } {
1603	set marker [namespace tail $marker]
1604	foreach m $_isomarkers($tf) {
1605	set sx [$m screenpos]
1606	if { $m != $marker } {
1607	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1608	$m activate $bool
1609	}
1610	}
1611	}
1612	return ""
1613	}
1614
1615	itcl::body Rappture::NanovisViewer::limits { tf } {
1616	set _limits(min) 0.0
1617	set _limits(max) 1.0
1618	if { ![info exists _style2datasets($tf)] } {
1619	return [array get _limits]
1620	}
1621	set min ""; set max ""
1622	foreach tag $_style2datasets($tf) {
1623	if { ![info exists _serverDatasets($tag)] } {
1624	continue
1625	}
1626	if { ![info exists _limits($tag-min)] } {
1627	continue
1628	}
1629	if { $min == "" \|\| $min > $_limits($tag-min) } {
1630	set min $_limits($tag-min)
1631	}
1632	if { $max == "" \|\| $max < $_limits($tag-max) } {
1633	set max $_limits($tag-max)
1634	}
1635	}
1636	if { $min != "" } {
1637	set _limits(min) $min
1638	}
1639	if { $max != "" } {
1640	set _limits(max) $max
1641	}
1642	return [array get _limits]
1643	}
1644
1645
1646	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1647	foreach { key value } {
1648	grid 0
1649	axes 1
1650	outline 1
1651	volume 1
1652	legend 1
1653	particles 1
1654	lic 1
1655	} {
1656	set _settings($this-$key) $value
1657	}
1658
1659	set fg [option get $itk_component(hull) font Font]
1660	#set bfg [option get $itk_component(hull) boldFont Font]
1661
1662	set inner [$itk_component(main) insert end \
1663	-title "View Settings" \
1664	-icon [Rappture::icon wrench]]
1665	$inner configure -borderwidth 4
1666
1667	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1668	checkbutton $inner.isosurface \
1669	-text "Isosurface shading" \
1670	-variable [itcl::scope _settings($this-isosurface)] \
1671	-command [itcl::code $this FixSettings isosurface] \
1672	-font "Arial 9"
1673
1674	checkbutton $inner.axes \
1675	-text "Axes" \
1676	-variable [itcl::scope _settings($this-axes)] \
1677	-command [itcl::code $this FixSettings axes] \
1678	-font "Arial 9"
1679
1680	checkbutton $inner.grid \
1681	-text "Grid" \
1682	-variable [itcl::scope _settings($this-grid)] \
1683	-command [itcl::code $this FixSettings grid] \
1684	-font "Arial 9"
1685
1686	checkbutton $inner.outline \
1687	-text "Outline" \
1688	-variable [itcl::scope _settings($this-outline)] \
1689	-command [itcl::code $this FixSettings outline] \
1690	-font "Arial 9"
1691
1692	checkbutton $inner.legend \
1693	-text "Legend" \
1694	-variable [itcl::scope _settings($this-legend)] \
1695	-command [itcl::code $this FixSettings legend] \
1696	-font "Arial 9"
1697
1698	checkbutton $inner.volume \
1699	-text "Volume" \
1700	-variable [itcl::scope _settings($this-volume)] \
1701	-command [itcl::code $this FixSettings volume] \
1702	-font "Arial 9"
1703
1704	blt::table $inner \
1705	0,0 $inner.axes -columnspan 2 -anchor w \
1706	1,0 $inner.grid -columnspan 2 -anchor w \
1707	2,0 $inner.outline -columnspan 2 -anchor w \
1708	3,0 $inner.volume -columnspan 2 -anchor w \
1709	4,0 $inner.legend -columnspan 2 -anchor w
1710
1711	if 0 {
1712	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1713	}
1714	blt::table configure $inner r* -resize none
1715	blt::table configure $inner r5 -resize expand
1716	}
1717
1718	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1719	foreach { key value } {
1720	light 40
1721	transp 50
1722	opacity 100
1723	thickness 350
1724	} {
1725	set _settings($this-$key) $value
1726	}
1727
1728	set inner [$itk_component(main) insert end \
1729	-title "Volume Settings" \
1730	-icon [Rappture::icon volume-on]]
1731	$inner configure -borderwidth 4
1732
1733	set fg [option get $itk_component(hull) font Font]
1734	#set bfg [option get $itk_component(hull) boldFont Font]
1735
1736	checkbutton $inner.vol -text "Show volume" -font $fg \
1737	-variable [itcl::scope _settings($this-volume)] \
1738	-command [itcl::code $this FixSettings volume]
1739	label $inner.shading -text "Shading:" -font $fg
1740
1741	label $inner.dim -text "Dim" -font $fg
1742	::scale $inner.light -from 0 -to 100 -orient horizontal \
1743	-variable [itcl::scope _settings($this-light)] \
1744	-width 10 \
1745	-showvalue off -command [itcl::code $this FixSettings light]
1746	label $inner.bright -text "Bright" -font $fg
1747
1748	label $inner.fog -text "Fog" -font $fg
1749	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1750	-variable [itcl::scope _settings($this-transp)] \
1751	-width 10 \
1752	-showvalue off -command [itcl::code $this FixSettings transp]
1753	label $inner.plastic -text "Plastic" -font $fg
1754
1755	label $inner.clear -text "Clear" -font $fg
1756	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1757	-variable [itcl::scope _settings($this-opacity)] \
1758	-width 10 \
1759	-showvalue off -command [itcl::code $this FixSettings opacity]
1760	label $inner.opaque -text "Opaque" -font $fg
1761
1762	label $inner.thin -text "Thin" -font $fg
1763	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1764	-variable [itcl::scope _settings($this-thickness)] \
1765	-width 10 \
1766	-showvalue off -command [itcl::code $this FixSettings thickness]
1767	label $inner.thick -text "Thick" -font $fg
1768
1769	blt::table $inner \
1770	0,0 $inner.vol -columnspan 4 -anchor w -pady 2 \
1771	1,0 $inner.shading -columnspan 4 -anchor w -pady {10 2} \
1772	2,0 $inner.dim -anchor e -pady 2 \
1773	2,1 $inner.light -columnspan 2 -pady 2 -fill x \
1774	2,3 $inner.bright -anchor w -pady 2 \
1775	3,0 $inner.fog -anchor e -pady 2 \
1776	3,1 $inner.transp -columnspan 2 -pady 2 -fill x \
1777	3,3 $inner.plastic -anchor w -pady 2 \
1778	4,0 $inner.clear -anchor e -pady 2 \
1779	4,1 $inner.opacity -columnspan 2 -pady 2 -fill x\
1780	4,3 $inner.opaque -anchor w -pady 2 \
1781	5,0 $inner.thin -anchor e -pady 2 \
1782	5,1 $inner.thickness -columnspan 2 -pady 2 -fill x\
1783	5,3 $inner.thick -anchor w -pady 2
1784
1785	blt::table configure $inner c0 c1 c3 r* -resize none
1786	blt::table configure $inner r6 -resize expand
1787	}
1788
1789	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1790	set inner [$itk_component(main) insert end \
1791	-title "Cutplane Settings" \
1792	-icon [Rappture::icon cutbutton]]
1793	$inner configure -borderwidth 4
1794
1795	# X-value slicer...
1796	itk_component add xCutButton {
1797	Rappture::PushButton $inner.xbutton \
1798	-onimage [Rappture::icon x-cutplane] \
1799	-offimage [Rappture::icon x-cutplane] \
1800	-command [itcl::code $this FixSettings xcutplane] \
1801	-variable [itcl::scope _settings($this-xcutplane)]
1802	}
1803	Rappture::Tooltip::for $itk_component(xCutButton) \
1804	"Toggle the X cut plane on/off"
1805
1806	itk_component add xCutScale {
1807	::scale $inner.xval -from 100 -to 0 \
1808	-width 10 -orient vertical -showvalue off \
1809	-borderwidth 1 -highlightthickness 0 \
1810	-command [itcl::code $this Slice move x] \
1811	-variable [itcl::scope _settings($this-xcutposition)]
1812	} {
1813	usual
1814	ignore -borderwidth -highlightthickness
1815	}
1816	# Set the default cutplane value before disabling the scale.
1817	$itk_component(xCutScale) set 50
1818	$itk_component(xCutScale) configure -state disabled
1819	Rappture::Tooltip::for $itk_component(xCutScale) \
1820	"@[itcl::code $this SlicerTip x]"
1821
1822	# Y-value slicer...
1823	itk_component add yCutButton {
1824	Rappture::PushButton $inner.ybutton \
1825	-onimage [Rappture::icon y-cutplane] \
1826	-offimage [Rappture::icon y-cutplane] \
1827	-command [itcl::code $this FixSettings ycutplane] \
1828	-variable [itcl::scope _settings($this-ycutplane)]
1829	}
1830	Rappture::Tooltip::for $itk_component(yCutButton) \
1831	"Toggle the Y cut plane on/off"
1832
1833	itk_component add yCutScale {
1834	::scale $inner.yval -from 100 -to 0 \
1835	-width 10 -orient vertical -showvalue off \
1836	-borderwidth 1 -highlightthickness 0 \
1837	-command [itcl::code $this Slice move y] \
1838	-variable [itcl::scope _settings($this-ycutposition)]
1839	} {
1840	usual
1841	ignore -borderwidth -highlightthickness
1842	}
1843	Rappture::Tooltip::for $itk_component(yCutScale) \
1844	"@[itcl::code $this SlicerTip y]"
1845	# Set the default cutplane value before disabling the scale.
1846	$itk_component(yCutScale) set 50
1847	$itk_component(yCutScale) configure -state disabled
1848
1849	# Z-value slicer...
1850	itk_component add zCutButton {
1851	Rappture::PushButton $inner.zbutton \
1852	-onimage [Rappture::icon z-cutplane] \
1853	-offimage [Rappture::icon z-cutplane] \
1854	-command [itcl::code $this FixSettings zcutplane] \
1855	-variable [itcl::scope _settings($this-zcutplane)]
1856	}
1857	Rappture::Tooltip::for $itk_component(zCutButton) \
1858	"Toggle the Z cut plane on/off"
1859
1860	itk_component add zCutScale {
1861	::scale $inner.zval -from 100 -to 0 \
1862	-width 10 -orient vertical -showvalue off \
1863	-borderwidth 1 -highlightthickness 0 \
1864	-command [itcl::code $this Slice move z] \
1865	-variable [itcl::scope _settings($this-zcutposition)]
1866	} {
1867	usual
1868	ignore -borderwidth -highlightthickness
1869	}
1870	$itk_component(zCutScale) set 50
1871	$itk_component(zCutScale) configure -state disabled
1872	#$itk_component(zCutScale) configure -state disabled
1873	Rappture::Tooltip::for $itk_component(zCutScale) \
1874	"@[itcl::code $this SlicerTip z]"
1875
1876	blt::table $inner \
1877	1,1 $itk_component(xCutButton) \
1878	1,2 $itk_component(yCutButton) \
1879	1,3 $itk_component(zCutButton) \
1880	0,1 $itk_component(xCutScale) \
1881	0,2 $itk_component(yCutScale) \
1882	0,3 $itk_component(zCutScale)
1883
1884	blt::table configure $inner r0 r1 c* -resize none
1885	blt::table configure $inner r2 c4 -resize expand
1886	blt::table configure $inner c0 -width 2
1887	blt::table configure $inner c1 c2 c3 -padx 2
1888	}
1889
1890	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1891	set inner [$itk_component(main) insert end \
1892	-title "Camera Settings" \
1893	-icon [Rappture::icon camera]]
1894	$inner configure -borderwidth 4
1895
1896	set labels { phi theta psi pan-x pan-y zoom }
1897	set row 0
1898	foreach tag $labels {
1899	label $inner.${tag}label -text $tag -font "Arial 9"
1900	entry $inner.${tag} -font "Arial 9" -bg white \
1901	-textvariable [itcl::scope _settings($this-$tag)]
1902	bind $inner.${tag} <KeyPress-Return> \
1903	[itcl::code $this camera set ${tag}]
1904	blt::table $inner \
1905	$row,0 $inner.${tag}label -anchor e -pady 2 \
1906	$row,1 $inner.${tag} -anchor w -pady 2
1907	blt::table configure $inner r$row -resize none
1908	incr row
1909	}
1910
1911	itk_component add orientation {
1912	Rappture::Combobox $inner.orientation -width 10 -editable no
1913	}
1914	$inner.orientation choices insert end \
1915	"front" "0 90 0" \
1916	"back" "180 90 0" \
1917	"top" "0 0 0" \
1918	"bottom" "0 180 0" \
1919	"left" "270 90 0 " \
1920	"right" "90 90 0" \
1921	"default" "45 45 0"
1922	$itk_component(orientation) value "default"
1923	bind $inner.orientation <<Value>> [itcl::code $this SetOrientation]
1924
1925	blt::table configure $inner c0 c1 -resize none
1926	blt::table configure $inner c2 -resize expand
1927	blt::table configure $inner r$row -resize expand
1928	}
1929
1930
1931	# ----------------------------------------------------------------------
1932	# USAGE: Slice move x\|y\|z <newval>
1933	#
1934	# Called automatically when the user drags the slider to move the
1935	# cut plane that slices 3D data. Gets the current value from the
1936	# slider and moves the cut plane to the appropriate point in the
1937	# data set.
1938	# ----------------------------------------------------------------------
1939	itcl::body Rappture::NanovisViewer::Slice {option args} {
1940	switch -- $option {
1941	move {
1942	if {[llength $args] != 2} {
1943	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1944	}
1945	set axis [lindex $args 0]
1946	set newval [lindex $args 1]
1947
1948	set newpos [expr {0.01*$newval}]
1949	set datasets [CurrentDatasets -cutplanes]
1950	set tag [lindex $datasets 0]
1951	SendCmd "cutplane position $newpos $axis $tag"
1952	}
1953	default {
1954	error "bad option \"$option\": should be axis, move, or volume"
1955	}
1956	}
1957	}
1958
1959	# ----------------------------------------------------------------------
1960	# USAGE: SlicerTip <axis>
1961	#
1962	# Used internally to generate a tooltip for the x/y/z slicer controls.
1963	# Returns a message that includes the current slicer value.
1964	# ----------------------------------------------------------------------
1965	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1966	set val [$itk_component(${axis}CutScale) get]
1967	# set val [expr {0.01*($val-50)
1968	# *($_limits(${axis}max)-$_limits(${axis}min))
1969	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1970	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1971	}
1972
1973
1974	itcl::body Rappture::NanovisViewer::DoResize {} {
1975	SendCmd "screen $_width $_height"
1976	set _resizePending 0
1977	}
1978
1979	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
1980	set _width $w
1981	set _height $h
1982	if { !$_resizePending } {
1983	$_dispatcher event -idle !resize
1984	set _resizePending 1
1985	}
1986	}
1987
1988	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
1989	if { !$_resizeLegendPending } {
1990	$_dispatcher event -idle !legend
1991	set _resizeLegendPending 1
1992	}
1993	}
1994
1995
1996	# camera --
1997	#
1998	itcl::body Rappture::NanovisViewer::camera {option args} {
1999	switch -- $option {
2000	"show" {
2001	puts [array get _view]
2002	}
2003	"set" {
2004	set who [lindex $args 0]
2005	set x $_settings($this-$who)
2006	set code [catch { string is double $x } result]
2007	if { $code != 0 \|\| !$result } {
2008	set _settings($this-$who) $_view($who)
2009	return
2010	}
2011	switch -- $who {
2012	"pan-x" - "pan-y" {
2013	set _view($who) $_settings($this-$who)
2014	PanCamera
2015	}
2016	"phi" - "theta" - "psi" {
2017	set _view($who) $_settings($this-$who)
2018	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
2019	SendCmd "camera angle $xyz"
2020	}
2021	"zoom" {
2022	set _view($who) $_settings($this-$who)
2023	SendCmd "camera zoom $_view(zoom)"
2024	}
2025	}
2026	}
2027	}
2028	}
2029
2030	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2031	set flowobj ""
2032	foreach key [array names _obj2flow] {
2033	set flowobj $_obj2flow($key)
2034	break
2035	}
2036	if { $flowobj == "" } {
2037	return
2038	}
2039	if { [winfo exists $w.frame] } {
2040	destroy $w.frame
2041	}
2042	set inner [frame $w.frame]
2043	blt::table $w \
2044	5,0 $inner -fill both -columnspan 2 -anchor nw
2045	array set hints [$dataobj hints]
2046
2047	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2048	blt::table $inner \
2049	1,0 $inner.volumes -anchor w \
2050	blt::table configure $inner c0 c1 -resize none
2051	blt::table configure $inner c2 -resize expand
2052
2053	set row 3
2054	set volumes [get]
2055	if { [llength $volumes] > 0 } {
2056	blt::table $inner $row,0 $inner.volumes -anchor w
2057	incr row
2058	}
2059	foreach vol $volumes {
2060	array unset info
2061	array set info $vol
2062	set name $info(name)
2063	if { ![info exists _settings($this-volume-$name)] } {
2064	set _settings($this-volume-$name) $info(hide)
2065	}
2066	checkbutton $inner.vol$row -text $info(label) \
2067	-variable [itcl::scope _settings($this-volume-$name)] \
2068	-onvalue 0 -offvalue 1 \
2069	-command [itcl::code $this volume $key $name] \
2070	-font "Arial 9"
2071	Rappture::Tooltip::for $inner.vol$row $info(description)
2072	blt::table $inner $row,0 $inner.vol$row -anchor w
2073	if { !$_settings($this-volume-$name) } {
2074	$inner.vol$row select
2075	}
2076	incr row
2077	}
2078	blt::table configure $inner r* -resize none
2079	blt::table configure $inner r$row -resize expand
2080	blt::table configure $inner c3 -resize expand
2081	event generate [winfo parent [winfo parent $w]] <Configure>
2082	}
2083
2084	itcl::body Rappture::NanovisViewer::volume { tag name } {
2085	set bool $_settings($this-volume-$name)
2086	SendCmd "volume statue $bool $name"
2087	}
2088
2089
2090	itcl::body Rappture::NanovisViewer::SetOrientation {} {
2091	set angles [$itk_component(orientation) value]
2092	foreach name { theta phi psi } angle $angles {
2093	set _view($name) $angle
2094	}
2095	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
2096	SendCmd "camera angle $xyz"
2097	}

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