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source: branches/1.3/gui/scripts/nanovisviewer.tcl @ 5256

Last change on this file since 5256 was 5254, checked in by ldelgass, 9 years ago
bring IsoMarker? closer in line with version in trunk/1.4 branch
File size: 74.5 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
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) 2004-2012 HUBzero Foundation, LLC
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 parameters {title args} {
79	# do nothing
80	}
81	public method removeDuplicateMarker { m x }
82	public method scale {args}
83	public method updateTransferFunctions {}
84
85	protected method Connect {}
86	protected method CurrentDatasets {{what -all}}
87	protected method Disconnect {}
88	protected method DoResize {}
89	protected method FixLegend {}
90	protected method AdjustSetting {what {value ""}}
91	protected method InitSettings { args }
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 SendTransferFuncs {}
99	protected method Slice {option args}
100	protected method SlicerTip {axis}
101	protected method Zoom {option}
102
103	# The following methods are only used by this class.
104	private method AddIsoMarker { x y }
105	private method BuildCameraTab {}
106	private method BuildCutplanesTab {}
107	private method BuildViewTab {}
108	private method BuildVolumeTab {}
109	private method ResetColormap { color }
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	private method SetOrientation { side }
120
121	private variable _arcball ""
122
123	private variable _dlist "" ;# list of data objects
124	private variable _allDataObjs
125	private variable _obj2ovride ;# maps dataobj => style override
126	private variable _serverDatasets ;# contains all the dataobj-component
127	;# to volumes in the server
128	private variable _serverTfs ;# contains all the transfer functions
129	;# in the server.
130	private variable _recvdDatasets ;# list of data objs to send to server
131	private variable _dataset2style ;# maps dataobj-component to transfunc
132	private variable _style2datasets ;# maps tf back to list of
133	# dataobj-components using the tf.
134
135	private variable _reset 1 ;# Connection to server has been reset
136	private variable _click ;# info used for rotate operations
137	private variable _limits ;# autoscale min/max for all axes
138	private variable _view ;# view params for 3D view
139	private variable _isomarkers ;# array of isosurface level values 0..1
140	private variable _settings
141	# Array of transfer functions in server. If 0 the transfer has been
142	# defined but not loaded. If 1 the transfer function has been named
143	# and loaded.
144	private variable _activeTfs
145	private variable _first "" ;# This is the topmost volume.
146
147	common _downloadPopup ;# download options from popup
148	private common _hardcopy
149	private variable _width 0
150	private variable _height 0
151	private variable _resizePending 0
152	private variable _resizeLegendPending 0
153	}
154
155	itk::usual NanovisViewer {
156	keep -background -foreground -cursor -font
157	keep -plotbackground -plotforeground
158	}
159
160	# ----------------------------------------------------------------------
161	# CONSTRUCTOR
162	# ----------------------------------------------------------------------
163	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
164	set _serverType "nanovis"
165
166	# Draw legend event
167	$_dispatcher register !legend
168	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
169
170	# Send transfer functions event
171	$_dispatcher register !send_transfunc
172	$_dispatcher dispatch $this !send_transfunc \
173	"[itcl::code $this SendTransferFuncs]; list"
174
175	# Rebuild event
176	$_dispatcher register !rebuild
177	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179	# Resize event
180	$_dispatcher register !resize
181	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183	#
184	# Populate parser with commands handle incoming requests
185	#
186	$_parser alias image [itcl::code $this ReceiveImage]
187	$_parser alias legend [itcl::code $this ReceiveLegend]
188	$_parser alias data [itcl::code $this ReceiveData]
189
190	# Initialize the view to some default parameters.
191	array set _view {
192	qw 0.853553
193	qx -0.353553
194	qy 0.353553
195	qz 0.146447
196	zoom 1.0
197	xpan 0
198	ypan 0
199	}
200	set _arcball [blt::arcball create 100 100]
201	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
202	$_arcball quaternion $q
203
204	set _limits(vmin) 0.0
205	set _limits(vmax) 1.0
206	set _reset 1
207
208	array set _settings [subst {
209	$this-qw $_view(qw)
210	$this-qx $_view(qx)
211	$this-qy $_view(qy)
212	$this-qz $_view(qz)
213	$this-zoom $_view(zoom)
214	$this-xpan $_view(xpan)
215	$this-ypan $_view(ypan)
216	$this-volume 1
217	$this-xcutplane 0
218	$this-xcutposition 0
219	$this-ycutplane 0
220	$this-ycutposition 0
221	$this-zcutplane 0
222	$this-zcutposition 0
223	}]
224
225	itk_component add 3dview {
226	label $itk_component(plotarea).view -image $_image(plot) \
227	-highlightthickness 0 -borderwidth 0
228	} {
229	usual
230	ignore -highlightthickness -borderwidth -background
231	}
232	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
233
234	set f [$itk_component(main) component controls]
235	itk_component add reset {
236	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
237	-highlightthickness 0 \
238	-image [Rappture::icon reset-view] \
239	-command [itcl::code $this Zoom reset]
240	} {
241	usual
242	ignore -highlightthickness
243	}
244	pack $itk_component(reset) -side top -padx 2 -pady 2
245	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
246
247	itk_component add zoomin {
248	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
249	-highlightthickness 0 \
250	-image [Rappture::icon zoom-in] \
251	-command [itcl::code $this Zoom in]
252	} {
253	usual
254	ignore -highlightthickness
255	}
256	pack $itk_component(zoomin) -side top -padx 2 -pady 2
257	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
258
259	itk_component add zoomout {
260	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
261	-highlightthickness 0 \
262	-image [Rappture::icon zoom-out] \
263	-command [itcl::code $this Zoom out]
264	} {
265	usual
266	ignore -highlightthickness
267	}
268	pack $itk_component(zoomout) -side top -padx 2 -pady 2
269	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
270
271	itk_component add volume {
272	Rappture::PushButton $f.volume \
273	-onimage [Rappture::icon volume-on] \
274	-offimage [Rappture::icon volume-off] \
275	-command [itcl::code $this AdjustSetting volume] \
276	-variable [itcl::scope _settings($this-volume)]
277	}
278	$itk_component(volume) select
279	Rappture::Tooltip::for $itk_component(volume) \
280	"Toggle the volume cloud on/off"
281	pack $itk_component(volume) -padx 2 -pady 2
282
283	if { [catch {
284	BuildViewTab
285	BuildVolumeTab
286	BuildCutplanesTab
287	BuildCameraTab
288	} errs] != 0 } {
289	global errorInfo
290	puts stderr "errs=$errs errorInfo=$errorInfo"
291	}
292
293	# Legend
294
295	set _image(legend) [image create photo]
296	itk_component add legend {
297	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
298	} {
299	usual
300	ignore -highlightthickness
301	rename -background -plotbackground plotBackground Background
302	}
303	bind $itk_component(legend) <Configure> \
304	[itcl::code $this EventuallyResizeLegend]
305
306	# Hack around the Tk panewindow. The problem is that the requested
307	# size of the 3d view isn't set until an image is retrieved from
308	# the server. So the panewindow uses the tiny size.
309	set w 10000
310	pack forget $itk_component(3dview)
311	blt::table $itk_component(plotarea) \
312	0,0 $itk_component(3dview) -fill both -reqwidth $w \
313	1,0 $itk_component(legend) -fill x
314	blt::table configure $itk_component(plotarea) r1 -resize none
315
316	# Bindings for rotation via mouse
317	bind $itk_component(3dview) <ButtonPress-1> \
318	[itcl::code $this Rotate click %x %y]
319	bind $itk_component(3dview) <B1-Motion> \
320	[itcl::code $this Rotate drag %x %y]
321	bind $itk_component(3dview) <ButtonRelease-1> \
322	[itcl::code $this Rotate release %x %y]
323	bind $itk_component(3dview) <Configure> \
324	[itcl::code $this EventuallyResize %w %h]
325
326	# Bindings for panning via mouse
327	bind $itk_component(3dview) <ButtonPress-2> \
328	[itcl::code $this Pan click %x %y]
329	bind $itk_component(3dview) <B2-Motion> \
330	[itcl::code $this Pan drag %x %y]
331	bind $itk_component(3dview) <ButtonRelease-2> \
332	[itcl::code $this Pan release %x %y]
333
334	# Bindings for panning via keyboard
335	bind $itk_component(3dview) <KeyPress-Left> \
336	[itcl::code $this Pan set -10 0]
337	bind $itk_component(3dview) <KeyPress-Right> \
338	[itcl::code $this Pan set 10 0]
339	bind $itk_component(3dview) <KeyPress-Up> \
340	[itcl::code $this Pan set 0 -10]
341	bind $itk_component(3dview) <KeyPress-Down> \
342	[itcl::code $this Pan set 0 10]
343	bind $itk_component(3dview) <Shift-KeyPress-Left> \
344	[itcl::code $this Pan set -2 0]
345	bind $itk_component(3dview) <Shift-KeyPress-Right> \
346	[itcl::code $this Pan set 2 0]
347	bind $itk_component(3dview) <Shift-KeyPress-Up> \
348	[itcl::code $this Pan set 0 -2]
349	bind $itk_component(3dview) <Shift-KeyPress-Down> \
350	[itcl::code $this Pan set 0 2]
351
352	# Bindings for zoom via keyboard
353	bind $itk_component(3dview) <KeyPress-Prior> \
354	[itcl::code $this Zoom out]
355	bind $itk_component(3dview) <KeyPress-Next> \
356	[itcl::code $this Zoom in]
357
358	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
359
360	if {[string equal "x11" [tk windowingsystem]]} {
361	# Bindings for zoom via mouse
362	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
363	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
364	}
365
366	set _image(download) [image create photo]
367
368	eval itk_initialize $args
369
370	EnableWaitDialog 900
371	Connect
372	}
373
374	# ----------------------------------------------------------------------
375	# DESTRUCTOR
376	# ----------------------------------------------------------------------
377	itcl::body Rappture::NanovisViewer::destructor {} {
378	$_dispatcher cancel !rebuild
379	$_dispatcher cancel !send_transfunc
380	$_dispatcher cancel !resize
381	image delete $_image(plot)
382	image delete $_image(legend)
383	image delete $_image(download)
384	catch { blt::arcball destroy $_arcball }
385	array unset _settings $this-*
386	}
387
388	# ----------------------------------------------------------------------
389	# USAGE: add <dataobj> ?<settings>?
390	#
391	# Clients use this to add a data object to the plot. The optional
392	# <settings> are used to configure the plot. Allowed settings are
393	# -color, -brightness, -width, -linestyle, and -raise.
394	# ----------------------------------------------------------------------
395	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
396	if { ![$dataobj isvalid] } {
397	return; # Object doesn't contain valid data.
398	}
399	array set params {
400	-color auto
401	-width 1
402	-linestyle solid
403	-brightness 0
404	-raise 0
405	-description ""
406	-param ""
407	}
408	array set params $settings
409
410	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
411	# can't handle -autocolors yet
412	set params(-color) black
413	}
414	set pos [lsearch -exact $_dlist $dataobj]
415	if {$pos < 0} {
416	lappend _dlist $dataobj
417	set _allDataObjs($dataobj) 1
418	set _obj2ovride($dataobj-color) $params(-color)
419	set _obj2ovride($dataobj-width) $params(-width)
420	set _obj2ovride($dataobj-raise) $params(-raise)
421	$_dispatcher event -idle !rebuild
422	}
423	}
424
425	# ----------------------------------------------------------------------
426	# USAGE: get ?-objects?
427	# USAGE: get ?-image 3dview\|legend?
428	#
429	# Clients use this to query the list of objects being plotted, in
430	# order from bottom to top of this result. The optional "-image"
431	# flag can also request the internal images being shown.
432	# ----------------------------------------------------------------------
433	itcl::body Rappture::NanovisViewer::get {args} {
434	if {[llength $args] == 0} {
435	set args "-objects"
436	}
437
438	set op [lindex $args 0]
439	switch -- $op {
440	-objects {
441	# put the dataobj list in order according to -raise options
442	set dlist $_dlist
443	foreach obj $dlist {
444	if {[info exists _obj2ovride($obj-raise)] &&
445	$_obj2ovride($obj-raise)} {
446	set i [lsearch -exact $dlist $obj]
447	if {$i >= 0} {
448	set dlist [lreplace $dlist $i $i]
449	lappend dlist $obj
450	}
451	}
452	}
453	return $dlist
454	}
455	-image {
456	if {[llength $args] != 2} {
457	error "wrong # args: should be \"get -image 3dview\|legend\""
458	}
459	switch -- [lindex $args end] {
460	3dview {
461	return $_image(plot)
462	}
463	legend {
464	return $_image(legend)
465	}
466	default {
467	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
468	}
469	}
470	}
471	default {
472	error "bad option \"$op\": should be -objects or -image"
473	}
474	}
475	}
476
477	# ----------------------------------------------------------------------
478	# USAGE: delete ?<dataobj1> <dataobj2> ...?
479	#
480	# Clients use this to delete a dataobj from the plot. If no dataobjs
481	# are specified, then all dataobjs are deleted. No data objects are
482	# deleted. They are only removed from the display list.
483	#
484	# ----------------------------------------------------------------------
485	itcl::body Rappture::NanovisViewer::delete {args} {
486	if {[llength $args] == 0} {
487	set args $_dlist
488	}
489	# Delete all specified dataobjs
490	set changed 0
491	foreach dataobj $args {
492	set pos [lsearch -exact $_dlist $dataobj]
493	if { $pos >= 0 } {
494	set _dlist [lreplace $_dlist $pos $pos]
495	array unset _limits $dataobj*
496	array unset _obj2ovride $dataobj-*
497	set changed 1
498	}
499	}
500	# If anything changed, then rebuild the plot
501	if {$changed} {
502	$_dispatcher event -idle !rebuild
503	}
504	}
505
506	# ----------------------------------------------------------------------
507	# USAGE: scale ?<data1> <data2> ...?
508	#
509	# Sets the default limits for the overall plot according to the
510	# limits of the data for all of the given <data> objects. This
511	# accounts for all objects--even those not showing on the screen.
512	# Because of this, the limits are appropriate for all objects as
513	# the user scans through data in the ResultSet viewer.
514	# ----------------------------------------------------------------------
515	itcl::body Rappture::NanovisViewer::scale {args} {
516	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
517	set _limits($val) ""
518	}
519	foreach dataobj $args {
520	if { ![$dataobj isvalid] } {
521	continue; # Object doesn't contain valid data.
522	}
523	foreach axis {x y z v} {
524	foreach { min max } [$dataobj limits $axis] break
525	if {"" != $min && "" != $max} {
526	if {"" == $_limits(${axis}min)} {
527	set _limits(${axis}min) $min
528	set _limits(${axis}max) $max
529	} else {
530	if {$min < $_limits(${axis}min)} {
531	set _limits(${axis}min) $min
532	}
533	if {$max > $_limits(${axis}max)} {
534	set _limits(${axis}max) $max
535	}
536	}
537	}
538	}
539	}
540	}
541
542	# ----------------------------------------------------------------------
543	# USAGE: download coming
544	# USAGE: download controls <downloadCommand>
545	# USAGE: download now
546	#
547	# Clients use this method to create a downloadable representation
548	# of the plot. Returns a list of the form {ext string}, where
549	# "ext" is the file extension (indicating the type of data) and
550	# "string" is the data itself.
551	# ----------------------------------------------------------------------
552	itcl::body Rappture::NanovisViewer::download {option args} {
553	switch $option {
554	coming {
555	if {[catch {
556	blt::winop snap $itk_component(plotarea) $_image(download)
557	}]} {
558	$_image(download) configure -width 1 -height 1
559	$_image(download) put #000000
560	}
561	}
562	controls {
563	# no controls for this download yet
564	return ""
565	}
566	now {
567	# Get the image data (as base64) and decode it back to binary.
568	# This is better than writing to temporary files. When we switch
569	# to the BLT picture image it won't be necessary to decode the
570	# image data.
571	if { [image width $_image(plot)] > 0 &&
572	[image height $_image(plot)] > 0 } {
573	set bytes [$_image(plot) data -format "jpeg -quality 100"]
574	set bytes [Rappture::encoding::decode -as b64 $bytes]
575	return [list .jpg $bytes]
576	}
577	return ""
578	}
579	default {
580	error "bad option \"$option\": should be coming, controls, now"
581	}
582	}
583	}
584
585	# ----------------------------------------------------------------------
586	# USAGE: Connect ?<host:port>,<host:port>...?
587	#
588	# Clients use this method to establish a connection to a new
589	# server, or to reestablish a connection to the previous server.
590	# Any existing connection is automatically closed.
591	# ----------------------------------------------------------------------
592	itcl::body Rappture::NanovisViewer::Connect {} {
593	set _hosts [GetServerList "nanovis"]
594	if { "" == $_hosts } {
595	return 0
596	}
597	set _reset 1
598	set result [VisViewer::Connect $_hosts]
599	if { $result } {
600	if { $_reportClientInfo } {
601	# Tell the server the viewer, hub, user and session.
602	# Do this immediately on connect before buffering any commands
603	global env
604
605	set info {}
606	set user "???"
607	if { [info exists env(USER)] } {
608	set user $env(USER)
609	}
610	set session "???"
611	if { [info exists env(SESSION)] } {
612	set session $env(SESSION)
613	}
614	lappend info "version" "$Rappture::version"
615	lappend info "build" "$Rappture::build"
616	lappend info "svnurl" "$Rappture::svnurl"
617	lappend info "installdir" "$Rappture::installdir"
618	lappend info "hub" [exec hostname]
619	lappend info "client" "nanovisviewer"
620	lappend info "user" $user
621	lappend info "session" $session
622	SendCmd "clientinfo [list $info]"
623	}
624
625	set w [winfo width $itk_component(3dview)]
626	set h [winfo height $itk_component(3dview)]
627	EventuallyResize $w $h
628	}
629	return $result
630	}
631
632	#
633	# isconnected --
634	#
635	# Indicates if we are currently connected to the visualization server.
636	#
637	itcl::body Rappture::NanovisViewer::isconnected {} {
638	return [VisViewer::IsConnected]
639	}
640
641	#
642	# disconnect --
643	#
644	itcl::body Rappture::NanovisViewer::disconnect {} {
645	Disconnect
646	}
647
648	#
649	# Disconnect --
650	#
651	# Clients use this method to disconnect from the current rendering
652	# server.
653	#
654	itcl::body Rappture::NanovisViewer::Disconnect {} {
655	VisViewer::Disconnect
656
657	# disconnected -- no more data sitting on server
658	array unset _serverDatasets
659	}
660
661	# ----------------------------------------------------------------------
662	# USAGE: SendTransferFuncs
663	# ----------------------------------------------------------------------
664	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
665	if { $_first == "" } {
666	puts stderr "first not set"
667	return
668	}
669	# Ensure that the global opacity and thickness settings (in the slider
670	# settings widgets) are used for the active transfer-function. Update
671	# the values in the _settings varible.
672	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
673	# Scale values between 0.00001 and 0.01000
674	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
675
676	foreach tag [CurrentDatasets] {
677	if { ![info exists _serverDatasets($tag)] \|\| !$_serverDatasets($tag) } {
678	# The volume hasn't reached the server yet. How did we get
679	# here?
680	puts stderr "Don't have $tag in _serverDatasets"
681	continue
682	}
683	if { ![info exists _dataset2style($tag)] } {
684	puts stderr "don't have style for volume $tag"
685	continue; # How does this happen?
686	}
687	set tf $_dataset2style($tag)
688	set _settings($this-$tf-opacity) $opacity
689	set _settings($this-$tf-thickness) $thickness
690	ComputeTransferFunc $tf
691	# FIXME: Need to the send information as to what transfer functions
692	# to update so that we only update the transfer function
693	# as necessary. Right now, all transfer functions are
694	# updated. This makes moving the isomarker slider chunky.
695	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
696	set _activeTfs($tf) 1
697	}
698	SendCmd "volume shading transfunc $tf $tag"
699	}
700	FixLegend
701	}
702
703	# ----------------------------------------------------------------------
704	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
705	#
706	# Invoked automatically whenever the "image" command comes in from
707	# the rendering server. Indicates that binary image data with the
708	# specified <size> will follow.
709	# ----------------------------------------------------------------------
710	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
711	array set info {
712	-token "???"
713	-bytes 0
714	-type image
715	}
716	array set info $args
717	set bytes [ReceiveBytes $info(-bytes)]
718	ReceiveEcho <<line "<read $info(-bytes) bytes"
719	if { $info(-type) == "image" } {
720	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
721	$_image(plot) configure -data $bytes
722	} elseif { $info(-type) == "print" } {
723	set tag $this-print-$info(-token)
724	set _hardcopy($tag) $bytes
725	}
726	}
727
728	#
729	# ReceiveLegend --
730	#
731	# The procedure is the response from the render server to each "legend"
732	# command. The server sends back a "legend" command invoked our
733	# the slave interpreter. The purpose is to collect data of the image
734	# representing the legend in the canvas. In addition, the isomarkers
735	# of the active transfer function are displayed.
736	#
737	# I don't know is this is the right place to display the isomarkers.
738	# I don't know all the different paths used to draw the plot. There's
739	# "Rebuild", "add", etc.
740	#
741	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
742	if { ![isconnected] } {
743	return
744	}
745	set bytes [ReceiveBytes $size]
746	$_image(legend) configure -data $bytes
747	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
748
749	set c $itk_component(legend)
750	set w [winfo width $c]
751	set h [winfo height $c]
752	set lx 10
753	set ly [expr {$h - 1}]
754	if {"" == [$c find withtag transfunc]} {
755	$c create image 10 10 -anchor nw \
756	-image $_image(legend) -tags transfunc
757	$c create text $lx $ly -anchor sw \
758	-fill $itk_option(-plotforeground) -tags "limits vmin"
759	$c create text [expr {$w-$lx}] $ly -anchor se \
760	-fill $itk_option(-plotforeground) -tags "limits vmax"
761	$c lower transfunc
762	$c bind transfunc <ButtonRelease-1> \
763	[itcl::code $this AddIsoMarker %x %y]
764	}
765	# Display the markers used by the active transfer function.
766
767	array set limits [limits $tf]
768	$c itemconfigure vmin -text [format %.2g $limits(min)]
769	$c coords vmin $lx $ly
770
771	$c itemconfigure vmax -text [format %.2g $limits(max)]
772	$c coords vmax [expr {$w-$lx}] $ly
773
774	if { [info exists _isomarkers($tf)] } {
775	foreach m $_isomarkers($tf) {
776	$m visible yes
777	}
778	}
779
780	# The colormap may have changed. Resync the slicers with the colormap.
781	set datasets [CurrentDatasets -cutplanes]
782	SendCmd "volume data state $_settings($this-volume) $datasets"
783
784	# Adjust the cutplane for only the first component in the topmost volume
785	# (i.e. the first volume designated in the field).
786	set tag [lindex $datasets 0]
787	foreach axis {x y z} {
788	# Turn off cutplanes for all volumes
789	SendCmd "cutplane state 0 $axis"
790	if { $_settings($this-${axis}cutplane) } {
791	# Turn on cutplane for this particular volume and set the position
792	SendCmd "cutplane state 1 $axis $tag"
793	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
794	SendCmd "cutplane position $pos $axis $tag"
795	}
796	}
797	}
798
799	#
800	# ReceiveData --
801	#
802	# The procedure is the response from the render server to each "data
803	# follows" command. The server sends back a "data" command invoked our
804	# the slave interpreter. The purpose is to collect the min/max of the
805	# volume sent to the render server. Since the client (nanovisviewer)
806	# doesn't parse 3D data formats, we rely on the server (nanovis) to
807	# tell us what the limits are. Once we've received the limits to all
808	# the data we've sent (tracked by _recvdDatasets) we can then determine
809	# what the transfer functions are for these volumes.
810	#
811	#
812	# Note: There is a considerable tradeoff in having the server report
813	# back what the data limits are. It means that much of the code
814	# having to do with transfer-functions has to wait for the data
815	# to come back, since the isomarkers are calculated based upon
816	# the data limits. The client code is much messier because of
817	# this. The alternative is to parse any of the 3D formats on the
818	# client side.
819	#
820	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
821	if { ![isconnected] } {
822	return
823	}
824
825	# Arguments from server are name value pairs. Stuff them in an array.
826	array set info $args
827
828	set tag $info(tag)
829	set parts [split $tag -]
830
831	#
832	# Volumes don't exist until we're told about them.
833	#
834	set dataobj [lindex $parts 0]
835	set _serverDatasets($tag) 1
836	if { $_settings($this-volume) && $dataobj == $_first } {
837	SendCmd "volume state 1 $tag"
838	}
839	set _limits($tag-min) $info(min); # Minimum value of the volume.
840	set _limits($tag-max) $info(max); # Maximum value of the volume.
841	set _limits(vmin) $info(vmin); # Overall minimum value.
842	set _limits(vmax) $info(vmax); # Overall maximum value.
843
844	unset _recvdDatasets($tag)
845	if { [array size _recvdDatasets] == 0 } {
846	# The active transfer function is by default the first component of
847	# the first data object. This assumes that the data is always
848	# successfully transferred.
849	updateTransferFunctions
850	}
851	}
852
853	# ----------------------------------------------------------------------
854	# USAGE: Rebuild
855	#
856	# Called automatically whenever something changes that affects the
857	# data in the widget. Clears any existing data and rebuilds the
858	# widget to display new data.
859	# ----------------------------------------------------------------------
860	itcl::body Rappture::NanovisViewer::Rebuild {} {
861	set w [winfo width $itk_component(3dview)]
862	set h [winfo height $itk_component(3dview)]
863	if { $w < 2 \|\| $h < 2 } {
864	update
865	$_dispatcher event -idle !rebuild
866	return
867	}
868
869	# Turn on buffering of commands to the server. We don't want to
870	# be preempted by a server disconnect/reconnect (which automatically
871	# generates a new call to Rebuild).
872	StartBufferingCommands
873
874	# Hide all the isomarkers. Can't remove them. Have to remember the
875	# settings since the user may have created/deleted/moved markers.
876
877	foreach tf [array names _isomarkers] {
878	foreach m $_isomarkers($tf) {
879	$m visible no
880	}
881	}
882
883	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
884	set _width $w
885	set _height $h
886	$_arcball resize $w $h
887	DoResize
888	}
889	foreach dataobj [get] {
890	foreach cname [$dataobj components] {
891	set tag $dataobj-$cname
892	if { ![info exists _serverDatasets($tag)] } {
893	# Send the data as one huge base64-encoded mess -- yuck!
894	if { [$dataobj type] == "dx" } {
895	if { ![$dataobj isvalid] } {
896	puts stderr "??? $dataobj is invalid"
897	}
898	set data [$dataobj blob $cname]
899	} else {
900	set data [$dataobj vtkdata $cname]
901	if 0 {
902	set f [open "/tmp/volume.vtk" "w"]
903	puts $f $data
904	close $f
905	}
906	}
907	set nbytes [string length $data]
908	if { $_reportClientInfo } {
909	set info {}
910	lappend info "tool_id" [$dataobj hints toolid]
911	lappend info "tool_name" [$dataobj hints toolname]
912	lappend info "tool_title" [$dataobj hints tooltitle]
913	lappend info "tool_command" [$dataobj hints toolcommand]
914	lappend info "tool_revision" [$dataobj hints toolrevision]
915	lappend info "dataset_label" [$dataobj hints label]
916	lappend info "dataset_size" $nbytes
917	lappend info "dataset_tag" $tag
918	SendCmd "clientinfo [list $info]"
919	}
920	SendCmd "volume data follows $nbytes $tag"
921	SendData $data
922	set _recvdDatasets($tag) 1
923	set _serverDatasets($tag) 0
924	}
925	NameTransferFunc $dataobj $cname
926	}
927	}
928	set _first [lindex [get] 0]
929	if { $_reset } {
930	#
931	# Reset the camera and other view parameters
932	#
933	set _settings($this-qw) $_view(qw)
934	set _settings($this-qx) $_view(qx)
935	set _settings($this-qy) $_view(qy)
936	set _settings($this-qz) $_view(qz)
937	set _settings($this-xpan) $_view(xpan)
938	set _settings($this-ypan) $_view(ypan)
939	set _settings($this-zoom) $_view(zoom)
940
941	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
942	$_arcball quaternion $q
943	SendCmd "camera orient $q"
944	SendCmd "camera reset"
945	PanCamera
946	SendCmd "camera zoom $_view(zoom)"
947	InitSettings light2side light transp isosurface grid axes
948
949	# Turn off cutplanes for all volumes
950	foreach axis {x y z} {
951	SendCmd "cutplane state 0 $axis"
952	}
953	if {"" != $_first} {
954	set axis [$_first hints updir]
955	if { "" != $axis } {
956	SendCmd "up $axis"
957	}
958	set location [$_first hints camera]
959	if { $location != "" } {
960	array set _view $location
961	}
962	}
963	}
964	# Outline seems to need to be reset every update.
965	InitSettings outline
966	# nothing to send -- activate the proper ivol
967	SendCmd "volume state 0"
968	if {"" != $_first} {
969	set datasets [array names _serverDatasets $_first-*]
970	if { $datasets != "" } {
971	SendCmd "volume state 1 $datasets"
972	}
973	# If the first volume already exists on the server, then make sure
974	# we display the proper transfer function in the legend.
975	set cname [lindex [$_first components] 0]
976	if { [info exists _serverDatasets($_first-$cname)] } {
977	updateTransferFunctions
978	}
979	}
980	# Actually write the commands to the server socket. If it fails, we don't
981	# care. We're finished here.
982	blt::busy hold $itk_component(hull)
983	StopBufferingCommands
984	blt::busy release $itk_component(hull)
985	set _reset 0
986	}
987
988	# ----------------------------------------------------------------------
989	# USAGE: CurrentDatasets ?-cutplanes?
990	#
991	# Returns a list of volume server IDs for the current volume being
992	# displayed. This is normally a single ID, but it might be a list
993	# of IDs if the current data object has multiple components.
994	# ----------------------------------------------------------------------
995	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
996	set rlist ""
997	if { $_first == "" } {
998	return
999	}
1000	foreach cname [$_first components] {
1001	set tag $_first-$cname
1002	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
1003	array set style {
1004	-cutplanes 1
1005	}
1006	array set style [lindex [$_first components -style $cname] 0]
1007	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
1008	lappend rlist $tag
1009	}
1010	}
1011	}
1012	return $rlist
1013	}
1014
1015	# ----------------------------------------------------------------------
1016	# USAGE: Zoom in
1017	# USAGE: Zoom out
1018	# USAGE: Zoom reset
1019	#
1020	# Called automatically when the user clicks on one of the zoom
1021	# controls for this widget. Changes the zoom for the current view.
1022	# ----------------------------------------------------------------------
1023	itcl::body Rappture::NanovisViewer::Zoom {option} {
1024	switch -- $option {
1025	"in" {
1026	set _view(zoom) [expr {$_view(zoom)*1.25}]
1027	set _settings($this-zoom) $_view(zoom)
1028	SendCmd "camera zoom $_view(zoom)"
1029	}
1030	"out" {
1031	set _view(zoom) [expr {$_view(zoom)*0.8}]
1032	set _settings($this-zoom) $_view(zoom)
1033	SendCmd "camera zoom $_view(zoom)"
1034	}
1035	"reset" {
1036	array set _view {
1037	qw 0.853553
1038	qx -0.353553
1039	qy 0.353553
1040	qz 0.146447
1041	zoom 1.0
1042	xpan 0
1043	ypan 0
1044	}
1045	if { $_first != "" } {
1046	set location [$_first hints camera]
1047	if { $location != "" } {
1048	array set _view $location
1049	}
1050	}
1051	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1052	$_arcball quaternion $q
1053	SendCmd "camera orient $q"
1054	SendCmd "camera reset"
1055	set _settings($this-qw) $_view(qw)
1056	set _settings($this-qx) $_view(qx)
1057	set _settings($this-qy) $_view(qy)
1058	set _settings($this-qz) $_view(qz)
1059	set _settings($this-xpan) $_view(xpan)
1060	set _settings($this-ypan) $_view(ypan)
1061	set _settings($this-zoom) $_view(zoom)
1062	}
1063	}
1064	}
1065
1066	itcl::body Rappture::NanovisViewer::PanCamera {} {
1067	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1068	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1069	set x $_view(xpan)
1070	set y $_view(ypan)
1071	SendCmd "camera pan $x $y"
1072	}
1073
1074
1075	# ----------------------------------------------------------------------
1076	# USAGE: Rotate click <x> <y>
1077	# USAGE: Rotate drag <x> <y>
1078	# USAGE: Rotate release <x> <y>
1079	#
1080	# Called automatically when the user clicks/drags/releases in the
1081	# plot area. Moves the plot according to the user's actions.
1082	# ----------------------------------------------------------------------
1083	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1084	switch -- $option {
1085	click {
1086	$itk_component(3dview) configure -cursor fleur
1087	set _click(x) $x
1088	set _click(y) $y
1089	}
1090	drag {
1091	if {[array size _click] == 0} {
1092	Rotate click $x $y
1093	} else {
1094	set w [winfo width $itk_component(3dview)]
1095	set h [winfo height $itk_component(3dview)]
1096	if {$w <= 0 \|\| $h <= 0} {
1097	return
1098	}
1099
1100	if {[catch {
1101	# this fails sometimes for no apparent reason
1102	set dx [expr {double($x-$_click(x))/$w}]
1103	set dy [expr {double($y-$_click(y))/$h}]
1104	}]} {
1105	return
1106	}
1107
1108	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1109	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1110	set _settings($this-qw) $_view(qw)
1111	set _settings($this-qx) $_view(qx)
1112	set _settings($this-qy) $_view(qy)
1113	set _settings($this-qz) $_view(qz)
1114	SendCmd "camera orient $q"
1115
1116	set _click(x) $x
1117	set _click(y) $y
1118	}
1119	}
1120	release {
1121	Rotate drag $x $y
1122	$itk_component(3dview) configure -cursor ""
1123	catch {unset _click}
1124	}
1125	default {
1126	error "bad option \"$option\": should be click, drag, release"
1127	}
1128	}
1129	}
1130
1131	# ----------------------------------------------------------------------
1132	# USAGE: $this Pan click x y
1133	# $this Pan drag x y
1134	# $this Pan release x y
1135	#
1136	# Called automatically when the user clicks on one of the zoom
1137	# controls for this widget. Changes the zoom for the current view.
1138	# ----------------------------------------------------------------------
1139	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1140	# Experimental stuff
1141	set w [winfo width $itk_component(3dview)]
1142	set h [winfo height $itk_component(3dview)]
1143	if { $option == "set" } {
1144	set x [expr $x / double($w)]
1145	set y [expr $y / double($h)]
1146	set _view(xpan) [expr $_view(xpan) + $x]
1147	set _view(ypan) [expr $_view(ypan) + $y]
1148	PanCamera
1149	set _settings($this-xpan) $_view(xpan)
1150	set _settings($this-ypan) $_view(ypan)
1151	return
1152	}
1153	if { $option == "click" } {
1154	set _click(x) $x
1155	set _click(y) $y
1156	$itk_component(3dview) configure -cursor hand1
1157	}
1158	if { $option == "drag" \|\| $option == "release" } {
1159	set dx [expr ($_click(x) - $x)/double($w)]
1160	set dy [expr ($_click(y) - $y)/double($h)]
1161	set _click(x) $x
1162	set _click(y) $y
1163	set _view(xpan) [expr $_view(xpan) - $dx]
1164	set _view(ypan) [expr $_view(ypan) - $dy]
1165	PanCamera
1166	set _settings($this-xpan) $_view(xpan)
1167	set _settings($this-ypan) $_view(ypan)
1168	}
1169	if { $option == "release" } {
1170	$itk_component(3dview) configure -cursor ""
1171	}
1172	}
1173
1174	# ----------------------------------------------------------------------
1175	# USAGE: InitSettings <what> ?<value>?
1176	#
1177	# Used internally to update rendering settings whenever parameters
1178	# change in the popup settings panel. Sends the new settings off
1179	# to the back end.
1180	# ----------------------------------------------------------------------
1181	itcl::body Rappture::NanovisViewer::InitSettings { args } {
1182	foreach arg $args {
1183	AdjustSetting $arg
1184	}
1185	}
1186
1187	# ----------------------------------------------------------------------
1188	# USAGE: AdjustSetting <what> ?<value>?
1189	#
1190	# Used internally to update rendering settings whenever parameters
1191	# change in the popup settings panel. Sends the new settings off
1192	# to the back end.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::NanovisViewer::AdjustSetting {what {value ""}} {
1195	if {![isconnected]} {
1196	return
1197	}
1198	switch -- $what {
1199	light {
1200	set val $_settings($this-light)
1201	set diffuse [expr {0.01*$val}]
1202	set ambient [expr {1.0-$diffuse}]
1203	set specularLevel 0.3
1204	set specularExp 90.0
1205	SendCmd "volume shading ambient $ambient"
1206	SendCmd "volume shading diffuse $diffuse"
1207	SendCmd "volume shading specularLevel $specularLevel"
1208	SendCmd "volume shading specularExp $specularExp"
1209	}
1210	light2side {
1211	set val $_settings($this-light2side)
1212	SendCmd "volume shading light2side $val"
1213	}
1214	transp {
1215	set val $_settings($this-transp)
1216	set sval [expr { 0.01 * double($val) }]
1217	SendCmd "volume shading opacity $sval"
1218	}
1219	opacity {
1220	set val $_settings($this-opacity)
1221	set sval [expr { 0.01 * double($val) }]
1222	foreach tf [array names _activeTfs] {
1223	set _settings($this-$tf-opacity) $sval
1224	set _activeTfs($tf) 0
1225	}
1226	updateTransferFunctions
1227	}
1228	thickness {
1229	if { [array names _activeTfs] > 0 } {
1230	set val $_settings($this-thickness)
1231	# Scale values between 0.00001 and 0.01000
1232	set sval [expr {0.0001*double($val)}]
1233	foreach tf [array names _activeTfs] {
1234	set _settings($this-$tf-thickness) $sval
1235	set _activeTfs($tf) 0
1236	}
1237	updateTransferFunctions
1238	}
1239	}
1240	"outline" {
1241	SendCmd "volume outline state $_settings($this-outline)"
1242	}
1243	"isosurface" {
1244	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1245	}
1246	"colormap" {
1247	set color [$itk_component(colormap) value]
1248	set _settings(colormap) $color
1249	# Only set the colormap on the first volume. Ignore the others.
1250	#ResetColormap $color
1251	}
1252	"grid" {
1253	SendCmd "grid visible $_settings($this-grid)"
1254	}
1255	"axes" {
1256	SendCmd "axis visible $_settings($this-axes)"
1257	}
1258	"legend" {
1259	if { $_settings($this-legend) } {
1260	blt::table $itk_component(plotarea) \
1261	0,0 $itk_component(3dview) -fill both \
1262	1,0 $itk_component(legend) -fill x
1263	blt::table configure $itk_component(plotarea) r1 -resize none
1264	} else {
1265	blt::table forget $itk_component(legend)
1266	}
1267	}
1268	"volume" {
1269	set datasets [CurrentDatasets -cutplanes]
1270	SendCmd "volume data state $_settings($this-volume) $datasets"
1271	}
1272	"xcutplane" - "ycutplane" - "zcutplane" {
1273	set axis [string range $what 0 0]
1274	set bool $_settings($this-$what)
1275	set datasets [CurrentDatasets -cutplanes]
1276	set tag [lindex $datasets 0]
1277	SendCmd "cutplane state $bool $axis $tag"
1278	if { $bool } {
1279	$itk_component(${axis}CutScale) configure -state normal \
1280	-troughcolor white
1281	} else {
1282	$itk_component(${axis}CutScale) configure -state disabled \
1283	-troughcolor grey82
1284	}
1285	}
1286	default {
1287	error "don't know how to fix $what"
1288	}
1289	}
1290	}
1291
1292	# ----------------------------------------------------------------------
1293	# USAGE: FixLegend
1294	#
1295	# Used internally to update the legend area whenever it changes size
1296	# or when the field changes. Asks the server to send a new legend
1297	# for the current field.
1298	# ----------------------------------------------------------------------
1299	itcl::body Rappture::NanovisViewer::FixLegend {} {
1300	set _resizeLegendPending 0
1301	set lineht [font metrics $itk_option(-font) -linespace]
1302	set w [expr {$_width-20}]
1303	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1304	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1305	set tag [lindex [CurrentDatasets] 0]
1306	if { [info exists _dataset2style($tag)] } {
1307	SendCmd "legend $_dataset2style($tag) $w $h"
1308	}
1309	} else {
1310	# Can't do this as this will remove the items associated with the
1311	# isomarkers.
1312
1313	#$itk_component(legend) delete all
1314	}
1315	}
1316
1317	#
1318	# NameTransferFunc --
1319	#
1320	# Creates a transfer function name based on the <style> settings in the
1321	# library run.xml file. This placeholder will be used later to create
1322	# and send the actual transfer function once the data info has been sent
1323	# to us by the render server. [We won't know the volume limits until the
1324	# server parses the 3D data and sends back the limits via ReceiveData.]
1325	#
1326	# FIXME: The current way we generate transfer-function names completely
1327	# ignores the -markers option. The problem is that we are forced
1328	# to compute the name from an increasing complex set of values:
1329	# color, levels, marker, opacity. I think we're stuck doing it
1330	# now.
1331	#
1332	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj cname } {
1333	array set style {
1334	-color BCGYR
1335	-levels 6
1336	-opacity 1.0
1337	-markers ""
1338	}
1339	set tag $dataobj-$cname
1340	array set style [lindex [$dataobj components -style $cname] 0]
1341	set tf "$style(-color):$style(-levels):$style(-opacity)"
1342	set _dataset2style($tag) $tf
1343	lappend _style2datasets($tf) $tag
1344	return $tf
1345	}
1346
1347	#
1348	# ComputeTransferFunc --
1349	#
1350	# Computes and sends the transfer function to the render server. It's
1351	# assumed that the volume data limits are known and that the global
1352	# transfer-functions slider values have been set up. Both parts are
1353	# needed to compute the relative value (location) of the marker, and
1354	# the alpha map of the transfer function.
1355	#
1356	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1357	array set style {
1358	-color BCGYR
1359	-levels 6
1360	-opacity 1.0
1361	-markers ""
1362	}
1363
1364	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1365	array set style [lindex [$dataobj components -style $cname] 0]
1366
1367	# We have to parse the style attributes for a volume using this
1368	# transfer-function once. This sets up the initial isomarkers for the
1369	# transfer function. The user may add/delete markers, so we have to
1370	# maintain a list of markers for each transfer-function. We use the one
1371	# of the volumes (the first in the list) using the transfer-function as a
1372	# reference.
1373	#
1374	# FIXME: The current way we generate transfer-function names completely
1375	# ignores the -markers option. The problem is that we are forced
1376	# to compute the name from an increasing complex set of values:
1377	# color, levels, marker, opacity. I think the cow's out of the
1378	# barn on this one.
1379
1380	if { ![info exists _isomarkers($tf)] } {
1381	# Have to defer creation of isomarkers until we have data limits
1382	if { [info exists style(-markers)] &&
1383	[llength $style(-markers)] > 0 } {
1384	ParseMarkersOption $tf $style(-markers)
1385	} else {
1386	ParseLevelsOption $tf $style(-levels)
1387	}
1388	}
1389	set cmap [ColorsToColormap $style(-color)]
1390	set tag $this-$tf
1391	if { ![info exists _settings($tag-opacity)] } {
1392	set _settings($tag-opacity) $style(-opacity)
1393	}
1394	set max 1.0 ;#$_settings($tag-opacity)
1395
1396	set isovalues {}
1397	foreach m $_isomarkers($tf) {
1398	lappend isovalues [$m relval]
1399	}
1400	# Sort the isovalues
1401	set isovalues [lsort -real $isovalues]
1402
1403	if { ![info exists _settings($tag-thickness)]} {
1404	set _settings($tag-thickness) 0.005
1405	}
1406	set delta $_settings($tag-thickness)
1407
1408	set first [lindex $isovalues 0]
1409	set last [lindex $isovalues end]
1410	set amap ""
1411	if { $first == "" \|\| $first != 0.0 } {
1412	lappend amap 0.0 0.0
1413	}
1414	foreach x $isovalues {
1415	set x1 [expr {$x-$delta-0.00001}]
1416	set x2 [expr {$x-$delta}]
1417	set x3 [expr {$x+$delta}]
1418	set x4 [expr {$x+$delta+0.00001}]
1419	if { $x1 < 0.0 } {
1420	set x1 0.0
1421	} elseif { $x1 > 1.0 } {
1422	set x1 1.0
1423	}
1424	if { $x2 < 0.0 } {
1425	set x2 0.0
1426	} elseif { $x2 > 1.0 } {
1427	set x2 1.0
1428	}
1429	if { $x3 < 0.0 } {
1430	set x3 0.0
1431	} elseif { $x3 > 1.0 } {
1432	set x3 1.0
1433	}
1434	if { $x4 < 0.0 } {
1435	set x4 0.0
1436	} elseif { $x4 > 1.0 } {
1437	set x4 1.0
1438	}
1439	# add spikes in the middle
1440	lappend amap $x1 0.0
1441	lappend amap $x2 $max
1442	lappend amap $x3 $max
1443	lappend amap $x4 0.0
1444	}
1445	if { $last == "" \|\| $last != 1.0 } {
1446	lappend amap 1.0 0.0
1447	}
1448	SendCmd "transfunc define $tf { $cmap } { $amap }"
1449	}
1450
1451	# ----------------------------------------------------------------------
1452	# CONFIGURATION OPTION: -plotbackground
1453	# ----------------------------------------------------------------------
1454	itcl::configbody Rappture::NanovisViewer::plotbackground {
1455	if { [isconnected] } {
1456	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1457	#fix this!
1458	#SendCmd "color background $r $g $b"
1459	}
1460	}
1461
1462	# ----------------------------------------------------------------------
1463	# CONFIGURATION OPTION: -plotforeground
1464	# ----------------------------------------------------------------------
1465	itcl::configbody Rappture::NanovisViewer::plotforeground {
1466	if { [isconnected] } {
1467	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1468	#fix this!
1469	#SendCmd "color background $r $g $b"
1470	}
1471	}
1472
1473	# ----------------------------------------------------------------------
1474	# CONFIGURATION OPTION: -plotoutline
1475	# ----------------------------------------------------------------------
1476	itcl::configbody Rappture::NanovisViewer::plotoutline {
1477	# Must check if we are connected because this routine is called from the
1478	# class body when the -plotoutline itk_option is defined. At that point
1479	# the NanovisViewer class constructor hasn't been called, so we can't
1480	# start sending commands to visualization server.
1481	if { [isconnected] } {
1482	if {"" == $itk_option(-plotoutline)} {
1483	SendCmd "volume outline state off"
1484	} else {
1485	SendCmd "volume outline state on"
1486	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1487	}
1488	}
1489	}
1490
1491	#
1492	# The -levels option takes a single value that represents the number
1493	# of evenly distributed markers based on the current data range. Each
1494	# marker is a relative value from 0.0 to 1.0.
1495	#
1496	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1497	set c $itk_component(legend)
1498	regsub -all "," $levels " " levels
1499	if {[string is int $levels]} {
1500	for {set i 1} { $i <= $levels } {incr i} {
1501	set x [expr {double($i)/($levels+1)}]
1502	set m [Rappture::IsoMarker \#auto $c $this $tf]
1503	$m relval $x
1504	lappend _isomarkers($tf) $m
1505	}
1506	} else {
1507	foreach x $levels {
1508	set m [Rappture::IsoMarker \#auto $c $this $tf]
1509	$m relval $x
1510	lappend _isomarkers($tf) $m
1511	}
1512	}
1513	}
1514
1515	#
1516	# The -markers option takes a list of zero or more values (the values
1517	# may be separated either by spaces or commas) that have the following
1518	# format:
1519	#
1520	# N% Percent of current total data range. Converted to
1521	# to a relative value between 0.0 and 1.0.
1522	# N Absolute value of marker. If the marker is outside of
1523	# the current range, it will be displayed on the outer
1524	# edge of the legends, but it range it represents will
1525	# not be seen.
1526	#
1527	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1528	set c $itk_component(legend)
1529	regsub -all "," $markers " " markers
1530	foreach marker $markers {
1531	set n [scan $marker "%g%s" value suffix]
1532	if { $n == 2 && $suffix == "%" } {
1533	# ${n}% : Set relative value.
1534	set value [expr {$value * 0.01}]
1535	set m [Rappture::IsoMarker \#auto $c $this $tf]
1536	$m relval $value
1537	lappend _isomarkers($tf) $m
1538	} else {
1539	# ${n} : Set absolute value.
1540	set m [Rappture::IsoMarker \#auto $c $this $tf]
1541	$m absval $value
1542	lappend _isomarkers($tf) $m
1543	}
1544	}
1545	}
1546
1547	# ----------------------------------------------------------------------
1548	# USAGE: UndateTransferFuncs
1549	# ----------------------------------------------------------------------
1550	itcl::body Rappture::NanovisViewer::updateTransferFunctions {} {
1551	$_dispatcher event -idle !send_transfunc
1552	}
1553
1554	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1555	if { $_first == "" } {
1556	error "active transfer function isn't set"
1557	}
1558	set tag [lindex [CurrentDatasets] 0]
1559	set tf $_dataset2style($tag)
1560	set c $itk_component(legend)
1561	set m [Rappture::IsoMarker \#auto $c $this $tf]
1562	set w [winfo width $c]
1563	$m relval [expr {double($x-10)/($w-20)}]
1564	lappend _isomarkers($tf) $m
1565	updateTransferFunctions
1566	return 1
1567	}
1568
1569	itcl::body Rappture::NanovisViewer::removeDuplicateMarker { marker x } {
1570	set tf [$marker transferfunc]
1571	set bool 0
1572	if { [info exists _isomarkers($tf)] } {
1573	set list {}
1574	set marker [namespace tail $marker]
1575	foreach m $_isomarkers($tf) {
1576	set sx [$m screenpos]
1577	if { $m != $marker } {
1578	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1579	$marker relval [$m relval]
1580	itcl::delete object $m
1581	bell
1582	set bool 1
1583	continue
1584	}
1585	}
1586	lappend list $m
1587	}
1588	set _isomarkers($tf) $list
1589	updateTransferFunctions
1590	}
1591	return $bool
1592	}
1593
1594	itcl::body Rappture::NanovisViewer::overMarker { marker x } {
1595	set tf [$marker transferfunc]
1596	if { [info exists _isomarkers($tf)] } {
1597	set marker [namespace tail $marker]
1598	foreach m $_isomarkers($tf) {
1599	set sx [$m screenpos]
1600	if { $m != $marker } {
1601	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1602	$m activate $bool
1603	}
1604	}
1605	}
1606	return ""
1607	}
1608
1609	itcl::body Rappture::NanovisViewer::limits { tf } {
1610	set _limits(min) 0.0
1611	set _limits(max) 1.0
1612	if { ![info exists _style2datasets($tf)] } {
1613	return [array get _limits]
1614	}
1615	set min ""; set max ""
1616	foreach tag $_style2datasets($tf) {
1617	if { ![info exists _serverDatasets($tag)] } {
1618	continue
1619	}
1620	if { ![info exists _limits($tag-min)] } {
1621	continue
1622	}
1623	if { $min == "" \|\| $min > $_limits($tag-min) } {
1624	set min $_limits($tag-min)
1625	}
1626	if { $max == "" \|\| $max < $_limits($tag-max) } {
1627	set max $_limits($tag-max)
1628	}
1629	}
1630	if { $min != "" } {
1631	set _limits(min) $min
1632	}
1633	if { $max != "" } {
1634	set _limits(max) $max
1635	}
1636	return [array get _limits]
1637	}
1638
1639
1640	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1641	foreach { key value } {
1642	grid 0
1643	axes 1
1644	outline 0
1645	volume 1
1646	legend 1
1647	particles 1
1648	lic 1
1649	} {
1650	set _settings($this-$key) $value
1651	}
1652
1653	set fg [option get $itk_component(hull) font Font]
1654	#set bfg [option get $itk_component(hull) boldFont Font]
1655
1656	set inner [$itk_component(main) insert end \
1657	-title "View Settings" \
1658	-icon [Rappture::icon wrench]]
1659	$inner configure -borderwidth 4
1660
1661	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1662	checkbutton $inner.isosurface \
1663	-text "Isosurface shading" \
1664	-variable [itcl::scope _settings($this-isosurface)] \
1665	-command [itcl::code $this AdjustSetting isosurface] \
1666	-font "Arial 9"
1667
1668	checkbutton $inner.axes \
1669	-text "Axes" \
1670	-variable [itcl::scope _settings($this-axes)] \
1671	-command [itcl::code $this AdjustSetting axes] \
1672	-font "Arial 9"
1673
1674	checkbutton $inner.grid \
1675	-text "Grid" \
1676	-variable [itcl::scope _settings($this-grid)] \
1677	-command [itcl::code $this AdjustSetting grid] \
1678	-font "Arial 9"
1679
1680	checkbutton $inner.outline \
1681	-text "Outline" \
1682	-variable [itcl::scope _settings($this-outline)] \
1683	-command [itcl::code $this AdjustSetting outline] \
1684	-font "Arial 9"
1685
1686	checkbutton $inner.legend \
1687	-text "Legend" \
1688	-variable [itcl::scope _settings($this-legend)] \
1689	-command [itcl::code $this AdjustSetting legend] \
1690	-font "Arial 9"
1691
1692	checkbutton $inner.volume \
1693	-text "Volume" \
1694	-variable [itcl::scope _settings($this-volume)] \
1695	-command [itcl::code $this AdjustSetting volume] \
1696	-font "Arial 9"
1697
1698	blt::table $inner \
1699	0,0 $inner.axes -cspan 2 -anchor w \
1700	1,0 $inner.grid -cspan 2 -anchor w \
1701	2,0 $inner.outline -cspan 2 -anchor w \
1702	3,0 $inner.volume -cspan 2 -anchor w \
1703	4,0 $inner.legend -cspan 2 -anchor w
1704
1705	if 0 {
1706	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1707	}
1708	blt::table configure $inner r* -resize none
1709	blt::table configure $inner r5 -resize expand
1710	}
1711
1712	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1713	foreach { key value } {
1714	light2side 1
1715	light 40
1716	transp 50
1717	opacity 100
1718	thickness 350
1719	} {
1720	set _settings($this-$key) $value
1721	}
1722
1723	set inner [$itk_component(main) insert end \
1724	-title "Volume Settings" \
1725	-icon [Rappture::icon volume-on]]
1726	$inner configure -borderwidth 4
1727
1728	set fg [option get $itk_component(hull) font Font]
1729	#set bfg [option get $itk_component(hull) boldFont Font]
1730
1731	checkbutton $inner.vol -text "Show volume" -font $fg \
1732	-variable [itcl::scope _settings($this-volume)] \
1733	-command [itcl::code $this AdjustSetting volume]
1734	label $inner.shading -text "Shading:" -font $fg
1735
1736	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1737	-variable [itcl::scope _settings($this-light2side)] \
1738	-command [itcl::code $this AdjustSetting light2side]
1739
1740	label $inner.dim -text "Glow" -font $fg
1741	::scale $inner.light -from 0 -to 100 -orient horizontal \
1742	-variable [itcl::scope _settings($this-light)] \
1743	-width 10 \
1744	-showvalue off -command [itcl::code $this AdjustSetting light]
1745	label $inner.bright -text "Surface" -font $fg
1746
1747	label $inner.fog -text "Clear" -font $fg
1748	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1749	-variable [itcl::scope _settings($this-transp)] \
1750	-width 10 \
1751	-showvalue off -command [itcl::code $this AdjustSetting transp]
1752	label $inner.plastic -text "Opaque" -font $fg
1753
1754	label $inner.clear -text "Clear" -font $fg
1755	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1756	-variable [itcl::scope _settings($this-opacity)] \
1757	-width 10 \
1758	-showvalue off -command [itcl::code $this AdjustSetting opacity]
1759	label $inner.opaque -text "Opaque" -font $fg
1760
1761	label $inner.thin -text "Thin" -font $fg
1762	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1763	-variable [itcl::scope _settings($this-thickness)] \
1764	-width 10 \
1765	-showvalue off -command [itcl::code $this AdjustSetting thickness]
1766	label $inner.thick -text "Thick" -font $fg
1767
1768	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1769	itk_component add colormap {
1770	Rappture::Combobox $inner.colormap -width 10 -editable no
1771	}
1772
1773	$inner.colormap choices insert end [GetColormapList -includeNone]
1774	$itk_component(colormap) value "BCGYR"
1775	bind $inner.colormap <<Value>> \
1776	[itcl::code $this AdjustSetting colormap]
1777
1778	blt::table $inner \
1779	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1780	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1781	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1782	3,0 $inner.dim -anchor e -pady 2 \
1783	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1784	3,3 $inner.bright -anchor w -pady 2 \
1785	4,0 $inner.fog -anchor e -pady 2 \
1786	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
1787	4,3 $inner.plastic -anchor w -pady 2 \
1788	5,0 $inner.thin -anchor e -pady 2 \
1789	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1790	5,3 $inner.thick -anchor w -pady 2
1791
1792	blt::table configure $inner c0 c1 c3 r* -resize none
1793	blt::table configure $inner r6 -resize expand
1794	}
1795
1796	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1797	set inner [$itk_component(main) insert end \
1798	-title "Cutplane Settings" \
1799	-icon [Rappture::icon cutbutton]]
1800	$inner configure -borderwidth 4
1801
1802	# X-value slicer...
1803	itk_component add xCutButton {
1804	Rappture::PushButton $inner.xbutton \
1805	-onimage [Rappture::icon x-cutplane] \
1806	-offimage [Rappture::icon x-cutplane] \
1807	-command [itcl::code $this AdjustSetting xcutplane] \
1808	-variable [itcl::scope _settings($this-xcutplane)]
1809	}
1810	Rappture::Tooltip::for $itk_component(xCutButton) \
1811	"Toggle the X cut plane on/off"
1812
1813	itk_component add xCutScale {
1814	::scale $inner.xval -from 100 -to 0 \
1815	-width 10 -orient vertical -showvalue off \
1816	-borderwidth 1 -highlightthickness 0 \
1817	-command [itcl::code $this Slice move x] \
1818	-variable [itcl::scope _settings($this-xcutposition)]
1819	} {
1820	usual
1821	ignore -borderwidth -highlightthickness
1822	}
1823	# Set the default cutplane value before disabling the scale.
1824	$itk_component(xCutScale) set 50
1825	$itk_component(xCutScale) configure -state disabled
1826	Rappture::Tooltip::for $itk_component(xCutScale) \
1827	"@[itcl::code $this SlicerTip x]"
1828
1829	# Y-value slicer...
1830	itk_component add yCutButton {
1831	Rappture::PushButton $inner.ybutton \
1832	-onimage [Rappture::icon y-cutplane] \
1833	-offimage [Rappture::icon y-cutplane] \
1834	-command [itcl::code $this AdjustSetting ycutplane] \
1835	-variable [itcl::scope _settings($this-ycutplane)]
1836	}
1837	Rappture::Tooltip::for $itk_component(yCutButton) \
1838	"Toggle the Y cut plane on/off"
1839
1840	itk_component add yCutScale {
1841	::scale $inner.yval -from 100 -to 0 \
1842	-width 10 -orient vertical -showvalue off \
1843	-borderwidth 1 -highlightthickness 0 \
1844	-command [itcl::code $this Slice move y] \
1845	-variable [itcl::scope _settings($this-ycutposition)]
1846	} {
1847	usual
1848	ignore -borderwidth -highlightthickness
1849	}
1850	Rappture::Tooltip::for $itk_component(yCutScale) \
1851	"@[itcl::code $this SlicerTip y]"
1852	# Set the default cutplane value before disabling the scale.
1853	$itk_component(yCutScale) set 50
1854	$itk_component(yCutScale) configure -state disabled
1855
1856	# Z-value slicer...
1857	itk_component add zCutButton {
1858	Rappture::PushButton $inner.zbutton \
1859	-onimage [Rappture::icon z-cutplane] \
1860	-offimage [Rappture::icon z-cutplane] \
1861	-command [itcl::code $this AdjustSetting zcutplane] \
1862	-variable [itcl::scope _settings($this-zcutplane)]
1863	}
1864	Rappture::Tooltip::for $itk_component(zCutButton) \
1865	"Toggle the Z cut plane on/off"
1866
1867	itk_component add zCutScale {
1868	::scale $inner.zval -from 100 -to 0 \
1869	-width 10 -orient vertical -showvalue off \
1870	-borderwidth 1 -highlightthickness 0 \
1871	-command [itcl::code $this Slice move z] \
1872	-variable [itcl::scope _settings($this-zcutposition)]
1873	} {
1874	usual
1875	ignore -borderwidth -highlightthickness
1876	}
1877	$itk_component(zCutScale) set 50
1878	$itk_component(zCutScale) configure -state disabled
1879	#$itk_component(zCutScale) configure -state disabled
1880	Rappture::Tooltip::for $itk_component(zCutScale) \
1881	"@[itcl::code $this SlicerTip z]"
1882
1883	blt::table $inner \
1884	1,1 $itk_component(xCutButton) \
1885	1,2 $itk_component(yCutButton) \
1886	1,3 $itk_component(zCutButton) \
1887	0,1 $itk_component(xCutScale) \
1888	0,2 $itk_component(yCutScale) \
1889	0,3 $itk_component(zCutScale)
1890
1891	blt::table configure $inner r0 r1 c* -resize none
1892	blt::table configure $inner r2 c4 -resize expand
1893	blt::table configure $inner c0 -width 2
1894	blt::table configure $inner c1 c2 c3 -padx 2
1895	}
1896
1897	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1898	set inner [$itk_component(main) insert end \
1899	-title "Camera Settings" \
1900	-icon [Rappture::icon camera]]
1901	$inner configure -borderwidth 4
1902
1903	label $inner.view_l -text "view" -font "Arial 9"
1904	set f [frame $inner.view]
1905	foreach side { front back left right top bottom } {
1906	button $f.$side -image [Rappture::icon view$side] \
1907	-command [itcl::code $this SetOrientation $side]
1908	Rappture::Tooltip::for $f.$side "Change the view to $side"
1909	pack $f.$side -side left
1910	}
1911
1912	blt::table $inner \
1913	0,0 $inner.view_l -anchor e -pady 2 \
1914	0,1 $inner.view -anchor w -pady 2
1915
1916	set row 1
1917	set labels { qw qx qy qz xpan ypan zoom }
1918	foreach tag $labels {
1919	label $inner.${tag}label -text $tag -font "Arial 9"
1920	entry $inner.${tag} -font "Arial 9" -bg white \
1921	-textvariable [itcl::scope _settings($this-$tag)]
1922	bind $inner.${tag} <Return> \
1923	[itcl::code $this camera set ${tag}]
1924	bind $inner.${tag} <KP_Enter> \
1925	[itcl::code $this camera set ${tag}]
1926	blt::table $inner \
1927	$row,0 $inner.${tag}label -anchor e -pady 2 \
1928	$row,1 $inner.${tag} -anchor w -pady 2
1929	blt::table configure $inner r$row -resize none
1930	incr row
1931	}
1932
1933	blt::table configure $inner c* r* -resize none
1934	blt::table configure $inner c2 -resize expand
1935	blt::table configure $inner r$row -resize expand
1936	}
1937
1938	# ----------------------------------------------------------------------
1939	# USAGE: Slice move x\|y\|z <newval>
1940	#
1941	# Called automatically when the user drags the slider to move the
1942	# cut plane that slices 3D data. Gets the current value from the
1943	# slider and moves the cut plane to the appropriate point in the
1944	# data set.
1945	# ----------------------------------------------------------------------
1946	itcl::body Rappture::NanovisViewer::Slice {option args} {
1947	switch -- $option {
1948	move {
1949	if {[llength $args] != 2} {
1950	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1951	}
1952	set axis [lindex $args 0]
1953	set newval [lindex $args 1]
1954
1955	set newpos [expr {0.01*$newval}]
1956	set datasets [CurrentDatasets -cutplanes]
1957	set tag [lindex $datasets 0]
1958	SendCmd "cutplane position $newpos $axis $tag"
1959	}
1960	default {
1961	error "bad option \"$option\": should be axis, move, or volume"
1962	}
1963	}
1964	}
1965
1966	# ----------------------------------------------------------------------
1967	# USAGE: SlicerTip <axis>
1968	#
1969	# Used internally to generate a tooltip for the x/y/z slicer controls.
1970	# Returns a message that includes the current slicer value.
1971	# ----------------------------------------------------------------------
1972	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1973	set val [$itk_component(${axis}CutScale) get]
1974	# set val [expr {0.01*($val-50)
1975	# *($_limits(${axis}max)-$_limits(${axis}min))
1976	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1977	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1978	}
1979
1980
1981	itcl::body Rappture::NanovisViewer::DoResize {} {
1982	$_arcball resize $_width $_height
1983	SendCmd "screen size $_width $_height"
1984	set _resizePending 0
1985	}
1986
1987	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
1988	set _width $w
1989	set _height $h
1990	$_arcball resize $w $h
1991	if { !$_resizePending } {
1992	$_dispatcher event -idle !resize
1993	set _resizePending 1
1994	}
1995	}
1996
1997	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
1998	if { !$_resizeLegendPending } {
1999	$_dispatcher event -idle !legend
2000	set _resizeLegendPending 1
2001	}
2002	}
2003
2004	# camera --
2005	#
2006	itcl::body Rappture::NanovisViewer::camera {option args} {
2007	switch -- $option {
2008	"show" {
2009	puts [array get _view]
2010	}
2011	"set" {
2012	set who [lindex $args 0]
2013	set x $_settings($this-$who)
2014	set code [catch { string is double $x } result]
2015	if { $code != 0 \|\| !$result } {
2016	set _settings($this-$who) $_view($who)
2017	return
2018	}
2019	switch -- $who {
2020	"xpan" - "ypan" {
2021	set _view($who) $_settings($this-$who)
2022	PanCamera
2023	}
2024	"qx" - "qy" - "qz" - "qw" {
2025	set _view($who) $_settings($this-$who)
2026	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2027	$_arcball quaternion $q
2028	SendCmd "camera orient $q"
2029	}
2030	"zoom" {
2031	set _view($who) $_settings($this-$who)
2032	SendCmd "camera zoom $_view(zoom)"
2033	}
2034	}
2035	}
2036	}
2037	}
2038
2039	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2040	set flowobj ""
2041	foreach key [array names _obj2flow] {
2042	set flowobj $_obj2flow($key)
2043	break
2044	}
2045	if { $flowobj == "" } {
2046	return
2047	}
2048	if { [winfo exists $w.frame] } {
2049	destroy $w.frame
2050	}
2051	set inner [frame $w.frame]
2052	blt::table $w \
2053	5,0 $inner -fill both -cspan 2 -anchor nw
2054	array set hints [$dataobj hints]
2055
2056	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2057	blt::table $inner \
2058	1,0 $inner.volumes -anchor w \
2059	blt::table configure $inner c0 c1 -resize none
2060	blt::table configure $inner c2 -resize expand
2061
2062	set row 3
2063	set volumes [get]
2064	if { [llength $volumes] > 0 } {
2065	blt::table $inner $row,0 $inner.volumes -anchor w
2066	incr row
2067	}
2068	foreach vol $volumes {
2069	array unset info
2070	array set info $vol
2071	set name $info(name)
2072	if { ![info exists _settings($this-volume-$name)] } {
2073	set _settings($this-volume-$name) $info(hide)
2074	}
2075	checkbutton $inner.vol$row -text $info(label) \
2076	-variable [itcl::scope _settings($this-volume-$name)] \
2077	-onvalue 0 -offvalue 1 \
2078	-command [itcl::code $this volume $key $name] \
2079	-font "Arial 9"
2080	Rappture::Tooltip::for $inner.vol$row $info(description)
2081	blt::table $inner $row,0 $inner.vol$row -anchor w
2082	if { !$_settings($this-volume-$name) } {
2083	$inner.vol$row select
2084	}
2085	incr row
2086	}
2087	blt::table configure $inner r* -resize none
2088	blt::table configure $inner r$row -resize expand
2089	blt::table configure $inner c3 -resize expand
2090	event generate [winfo parent [winfo parent $w]] <Configure>
2091	}
2092
2093	itcl::body Rappture::NanovisViewer::volume { tag name } {
2094	set bool $_settings($this-volume-$name)
2095	SendCmd "volume statue $bool $name"
2096	}
2097
2098	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2099	array set positions {
2100	front "1 0 0 0"
2101	back "0 0 1 0"
2102	left "0.707107 0 -0.707107 0"
2103	right "0.707107 0 0.707107 0"
2104	top "0.707107 -0.707107 0 0"
2105	bottom "0.707107 0.707107 0 0"
2106	}
2107	foreach name { qw qx qy qz } value $positions($side) {
2108	set _view($name) $value
2109	}
2110	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2111	$_arcball quaternion $q
2112	SendCmd "camera orient $q"
2113	SendCmd "camera reset"
2114	set _view(xpan) 0
2115	set _view(ypan) 0
2116	set _view(zoom) 1.0
2117	set _settings($this-xpan) $_view(xpan)
2118	set _settings($this-ypan) $_view(ypan)
2119	set _settings($this-zoom) $_view(zoom)
2120	}
2121

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