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source: branches/1.3/gui/scripts/nanovisviewer.tcl @ 4482

Last change on this file since 4482 was 4469, checked in by ldelgass, 10 years ago
Remove debugging prints
File size: 74.3 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 parameters {title args} {
80	# do nothing
81	}
82	public method rmdupmarker { m x }
83	public method scale {args}
84	public method updatetransferfuncs {}
85
86	protected method Connect {}
87	protected method CurrentDatasets {{what -all}}
88	protected method Disconnect {}
89	protected method DoResize {}
90	protected method FixLegend {}
91	protected method AdjustSetting {what {value ""}}
92	protected method InitSettings { args }
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 SendTransferFuncs {}
100	protected method Slice {option args}
101	protected method SlicerTip {axis}
102	protected method Zoom {option}
103
104	# The following methods are only used by this class.
105	private method AddIsoMarker { x y }
106	private method BuildCameraTab {}
107	private method BuildCutplanesTab {}
108	private method BuildViewTab {}
109	private method BuildVolumeTab {}
110	private method ResetColormap { color }
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 { side }
121
122	private variable _arcball ""
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 _dataset2style ;# 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 _alphamap
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	#
190	# Populate parser with commands handle incoming requests
191	#
192	$_parser alias image [itcl::code $this ReceiveImage]
193	$_parser alias legend [itcl::code $this ReceiveLegend]
194	$_parser alias data [itcl::code $this ReceiveData]
195
196	# Initialize the view to some default parameters.
197	array set _view {
198	qw 0.853553
199	qx -0.353553
200	qy 0.353553
201	qz 0.146447
202	zoom 1.0
203	xpan 0
204	ypan 0
205	}
206	set _arcball [blt::arcball create 100 100]
207	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
208	$_arcball quaternion $q
209
210	set _limits(vmin) 0.0
211	set _limits(vmax) 1.0
212	set _reset 1
213
214	array set _settings [subst {
215	$this-qw $_view(qw)
216	$this-qx $_view(qx)
217	$this-qy $_view(qy)
218	$this-qz $_view(qz)
219	$this-zoom $_view(zoom)
220	$this-xpan $_view(xpan)
221	$this-ypan $_view(ypan)
222	$this-volume 1
223	$this-xcutplane 0
224	$this-xcutposition 0
225	$this-ycutplane 0
226	$this-ycutposition 0
227	$this-zcutplane 0
228	$this-zcutposition 0
229	}]
230
231	itk_component add 3dview {
232	label $itk_component(plotarea).view -image $_image(plot) \
233	-highlightthickness 0 -borderwidth 0
234	} {
235	usual
236	ignore -highlightthickness -borderwidth -background
237	}
238	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
239
240	set f [$itk_component(main) component controls]
241	itk_component add reset {
242	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
243	-highlightthickness 0 \
244	-image [Rappture::icon reset-view] \
245	-command [itcl::code $this Zoom reset]
246	} {
247	usual
248	ignore -highlightthickness
249	}
250	pack $itk_component(reset) -side top -padx 2 -pady 2
251	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
252
253	itk_component add zoomin {
254	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
255	-highlightthickness 0 \
256	-image [Rappture::icon zoom-in] \
257	-command [itcl::code $this Zoom in]
258	} {
259	usual
260	ignore -highlightthickness
261	}
262	pack $itk_component(zoomin) -side top -padx 2 -pady 2
263	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
264
265	itk_component add zoomout {
266	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
267	-highlightthickness 0 \
268	-image [Rappture::icon zoom-out] \
269	-command [itcl::code $this Zoom out]
270	} {
271	usual
272	ignore -highlightthickness
273	}
274	pack $itk_component(zoomout) -side top -padx 2 -pady 2
275	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
276
277	itk_component add volume {
278	Rappture::PushButton $f.volume \
279	-onimage [Rappture::icon volume-on] \
280	-offimage [Rappture::icon volume-off] \
281	-command [itcl::code $this AdjustSetting volume] \
282	-variable [itcl::scope _settings($this-volume)]
283	}
284	$itk_component(volume) select
285	Rappture::Tooltip::for $itk_component(volume) \
286	"Toggle the volume cloud on/off"
287	pack $itk_component(volume) -padx 2 -pady 2
288
289	if { [catch {
290	BuildViewTab
291	BuildVolumeTab
292	BuildCutplanesTab
293	BuildCameraTab
294	} errs] != 0 } {
295	global errorInfo
296	puts stderr "errs=$errs errorInfo=$errorInfo"
297	}
298
299	# Legend
300
301	set _image(legend) [image create photo]
302	itk_component add legend {
303	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
304	} {
305	usual
306	ignore -highlightthickness
307	rename -background -plotbackground plotBackground Background
308	}
309	bind $itk_component(legend) <Configure> \
310	[itcl::code $this EventuallyResizeLegend]
311
312	# Hack around the Tk panewindow. The problem is that the requested
313	# size of the 3d view isn't set until an image is retrieved from
314	# the server. So the panewindow uses the tiny size.
315	set w 10000
316	pack forget $itk_component(3dview)
317	blt::table $itk_component(plotarea) \
318	0,0 $itk_component(3dview) -fill both -reqwidth $w \
319	1,0 $itk_component(legend) -fill x
320	blt::table configure $itk_component(plotarea) r1 -resize none
321
322	# Bindings for rotation via mouse
323	bind $itk_component(3dview) <ButtonPress-1> \
324	[itcl::code $this Rotate click %x %y]
325	bind $itk_component(3dview) <B1-Motion> \
326	[itcl::code $this Rotate drag %x %y]
327	bind $itk_component(3dview) <ButtonRelease-1> \
328	[itcl::code $this Rotate release %x %y]
329	bind $itk_component(3dview) <Configure> \
330	[itcl::code $this EventuallyResize %w %h]
331
332	# Bindings for panning via mouse
333	bind $itk_component(3dview) <ButtonPress-2> \
334	[itcl::code $this Pan click %x %y]
335	bind $itk_component(3dview) <B2-Motion> \
336	[itcl::code $this Pan drag %x %y]
337	bind $itk_component(3dview) <ButtonRelease-2> \
338	[itcl::code $this Pan release %x %y]
339
340	# Bindings for panning via keyboard
341	bind $itk_component(3dview) <KeyPress-Left> \
342	[itcl::code $this Pan set -10 0]
343	bind $itk_component(3dview) <KeyPress-Right> \
344	[itcl::code $this Pan set 10 0]
345	bind $itk_component(3dview) <KeyPress-Up> \
346	[itcl::code $this Pan set 0 -10]
347	bind $itk_component(3dview) <KeyPress-Down> \
348	[itcl::code $this Pan set 0 10]
349	bind $itk_component(3dview) <Shift-KeyPress-Left> \
350	[itcl::code $this Pan set -2 0]
351	bind $itk_component(3dview) <Shift-KeyPress-Right> \
352	[itcl::code $this Pan set 2 0]
353	bind $itk_component(3dview) <Shift-KeyPress-Up> \
354	[itcl::code $this Pan set 0 -2]
355	bind $itk_component(3dview) <Shift-KeyPress-Down> \
356	[itcl::code $this Pan set 0 2]
357
358	# Bindings for zoom via keyboard
359	bind $itk_component(3dview) <KeyPress-Prior> \
360	[itcl::code $this Zoom out]
361	bind $itk_component(3dview) <KeyPress-Next> \
362	[itcl::code $this Zoom in]
363
364	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
365
366	if {[string equal "x11" [tk windowingsystem]]} {
367	# Bindings for zoom via mouse
368	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
369	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
370	}
371
372	set _image(download) [image create photo]
373
374	eval itk_initialize $args
375
376	Connect
377	}
378
379	# ----------------------------------------------------------------------
380	# DESTRUCTOR
381	# ----------------------------------------------------------------------
382	itcl::body Rappture::NanovisViewer::destructor {} {
383	$_dispatcher cancel !rebuild
384	$_dispatcher cancel !send_transfunc
385	$_dispatcher cancel !resize
386	image delete $_image(plot)
387	image delete $_image(legend)
388	image delete $_image(download)
389	catch { blt::arcball destroy $_arcball }
390	array unset _settings $this-*
391	}
392
393	# ----------------------------------------------------------------------
394	# USAGE: add <dataobj> ?<settings>?
395	#
396	# Clients use this to add a data object to the plot. The optional
397	# <settings> are used to configure the plot. Allowed settings are
398	# -color, -brightness, -width, -linestyle, and -raise.
399	# ----------------------------------------------------------------------
400	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
401	if { ![$dataobj isvalid] } {
402	return; # Object doesn't contain valid data.
403	}
404	array set params {
405	-color auto
406	-width 1
407	-linestyle solid
408	-brightness 0
409	-raise 0
410	-description ""
411	-param ""
412	}
413	array set params $settings
414
415	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
416	# can't handle -autocolors yet
417	set params(-color) black
418	}
419	set pos [lsearch -exact $_dlist $dataobj]
420	if {$pos < 0} {
421	lappend _dlist $dataobj
422	set _allDataObjs($dataobj) 1
423	set _obj2ovride($dataobj-color) $params(-color)
424	set _obj2ovride($dataobj-width) $params(-width)
425	set _obj2ovride($dataobj-raise) $params(-raise)
426	$_dispatcher event -idle !rebuild
427	}
428	}
429
430	# ----------------------------------------------------------------------
431	# USAGE: get ?-objects?
432	# USAGE: get ?-image 3dview\|legend?
433	#
434	# Clients use this to query the list of objects being plotted, in
435	# order from bottom to top of this result. The optional "-image"
436	# flag can also request the internal images being shown.
437	# ----------------------------------------------------------------------
438	itcl::body Rappture::NanovisViewer::get {args} {
439	if {[llength $args] == 0} {
440	set args "-objects"
441	}
442
443	set op [lindex $args 0]
444	switch -- $op {
445	-objects {
446	# put the dataobj list in order according to -raise options
447	set dlist $_dlist
448	foreach obj $dlist {
449	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
450	set i [lsearch -exact $dlist $obj]
451	if {$i >= 0} {
452	set dlist [lreplace $dlist $i $i]
453	lappend dlist $obj
454	}
455	}
456	}
457	return $dlist
458	}
459	-image {
460	if {[llength $args] != 2} {
461	error "wrong # args: should be \"get -image 3dview\|legend\""
462	}
463	switch -- [lindex $args end] {
464	3dview {
465	return $_image(plot)
466	}
467	legend {
468	return $_image(legend)
469	}
470	default {
471	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
472	}
473	}
474	}
475	default {
476	error "bad option \"$op\": should be -objects or -image"
477	}
478	}
479	}
480
481	# ----------------------------------------------------------------------
482	# USAGE: delete ?<dataobj1> <dataobj2> ...?
483	#
484	# Clients use this to delete a dataobj from the plot. If no dataobjs
485	# are specified, then all dataobjs are deleted. No data objects are
486	# deleted. They are only removed from the display list.
487	#
488	# ----------------------------------------------------------------------
489	itcl::body Rappture::NanovisViewer::delete {args} {
490	if {[llength $args] == 0} {
491	set args $_dlist
492	}
493	# Delete all specified dataobjs
494	set changed 0
495	foreach dataobj $args {
496	set pos [lsearch -exact $_dlist $dataobj]
497	if { $pos >= 0 } {
498	set _dlist [lreplace $_dlist $pos $pos]
499	array unset _limits $dataobj*
500	array unset _obj2ovride $dataobj-*
501	set changed 1
502	}
503	}
504	# If anything changed, then rebuild the plot
505	if {$changed} {
506	$_dispatcher event -idle !rebuild
507	}
508	}
509
510	# ----------------------------------------------------------------------
511	# USAGE: scale ?<data1> <data2> ...?
512	#
513	# Sets the default limits for the overall plot according to the
514	# limits of the data for all of the given <data> objects. This
515	# accounts for all objects--even those not showing on the screen.
516	# Because of this, the limits are appropriate for all objects as
517	# the user scans through data in the ResultSet viewer.
518	# ----------------------------------------------------------------------
519	itcl::body Rappture::NanovisViewer::scale {args} {
520	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
521	set _limits($val) ""
522	}
523	foreach dataobj $args {
524	if { ![$dataobj isvalid] } {
525	continue; # Object doesn't contain valid data.
526	}
527	foreach axis {x y z v} {
528	foreach { min max } [$dataobj limits $axis] break
529	if {"" != $min && "" != $max} {
530	if {"" == $_limits(${axis}min)} {
531	set _limits(${axis}min) $min
532	set _limits(${axis}max) $max
533	} else {
534	if {$min < $_limits(${axis}min)} {
535	set _limits(${axis}min) $min
536	}
537	if {$max > $_limits(${axis}max)} {
538	set _limits(${axis}max) $max
539	}
540	}
541	}
542	}
543	}
544	}
545
546	# ----------------------------------------------------------------------
547	# USAGE: download coming
548	# USAGE: download controls <downloadCommand>
549	# USAGE: download now
550	#
551	# Clients use this method to create a downloadable representation
552	# of the plot. Returns a list of the form {ext string}, where
553	# "ext" is the file extension (indicating the type of data) and
554	# "string" is the data itself.
555	# ----------------------------------------------------------------------
556	itcl::body Rappture::NanovisViewer::download {option args} {
557	switch $option {
558	coming {
559	if {[catch {
560	blt::winop snap $itk_component(plotarea) $_image(download)
561	}]} {
562	$_image(download) configure -width 1 -height 1
563	$_image(download) put #000000
564	}
565	}
566	controls {
567	# no controls for this download yet
568	return ""
569	}
570	now {
571	# Get the image data (as base64) and decode it back to binary.
572	# This is better than writing to temporary files. When we switch
573	# to the BLT picture image it won't be necessary to decode the
574	# image data.
575	if { [image width $_image(plot)] > 0 &&
576	[image height $_image(plot)] > 0 } {
577	set bytes [$_image(plot) data -format "jpeg -quality 100"]
578	set bytes [Rappture::encoding::decode -as b64 $bytes]
579	return [list .jpg $bytes]
580	}
581	return ""
582	}
583	default {
584	error "bad option \"$option\": should be coming, controls, now"
585	}
586	}
587	}
588
589	# ----------------------------------------------------------------------
590	# USAGE: Connect ?<host:port>,<host:port>...?
591	#
592	# Clients use this method to establish a connection to a new
593	# server, or to reestablish a connection to the previous server.
594	# Any existing connection is automatically closed.
595	# ----------------------------------------------------------------------
596	itcl::body Rappture::NanovisViewer::Connect {} {
597	set _hosts [GetServerList "nanovis"]
598	if { "" == $_hosts } {
599	return 0
600	}
601	set _reset 1
602	set result [VisViewer::Connect $_hosts]
603	if { $result } {
604	if { $_reportClientInfo } {
605	# Tell the server the viewer, hub, user and session.
606	# Do this immediately on connect before buffering any commands
607	global env
608
609	set info {}
610	set user "???"
611	if { [info exists env(USER)] } {
612	set user $env(USER)
613	}
614	set session "???"
615	if { [info exists env(SESSION)] } {
616	set session $env(SESSION)
617	}
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	set c $itk_component(legend)
749	set w [winfo width $c]
750	set h [winfo height $c]
751	set lx 10
752	set ly [expr {$h - 1}]
753	if {"" == [$c find withtag transfunc]} {
754	$c create image 10 10 -anchor nw \
755	-image $_image(legend) -tags transfunc
756	$c create text $lx $ly -anchor sw \
757	-fill $itk_option(-plotforeground) -tags "limits vmin"
758	$c create text [expr {$w-$lx}] $ly -anchor se \
759	-fill $itk_option(-plotforeground) -tags "limits vmax"
760	$c lower transfunc
761	$c bind transfunc <ButtonRelease-1> \
762	[itcl::code $this AddIsoMarker %x %y]
763	}
764	# Display the markers used by the active transfer function.
765
766	array set limits [limits $tf]
767	$c itemconfigure vmin -text [format %g $limits(min)]
768	$c coords vmin $lx $ly
769
770	$c itemconfigure vmax -text [format %g $limits(max)]
771	$c coords vmax [expr {$w-$lx}] $ly
772
773	if { [info exists _isomarkers($tf)] } {
774	foreach m $_isomarkers($tf) {
775	$m visible yes
776	}
777	}
778
779	# The colormap may have changed. Resync the slicers with the colormap.
780	set datasets [CurrentDatasets -cutplanes]
781	SendCmd "volume data state $_settings($this-volume) $datasets"
782
783	# Adjust the cutplane for only the first component in the topmost volume
784	# (i.e. the first volume designated in the field).
785	set tag [lindex $datasets 0]
786	foreach axis {x y z} {
787	# Turn off cutplanes for all volumes
788	SendCmd "cutplane state 0 $axis"
789	if { $_settings($this-${axis}cutplane) } {
790	# Turn on cutplane for this particular volume and set the position
791	SendCmd "cutplane state 1 $axis $tag"
792	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
793	SendCmd "cutplane position $pos $axis $tag"
794	}
795	}
796	}
797
798	#
799	# ReceiveData --
800	#
801	# The procedure is the response from the render server to each "data
802	# follows" command. The server sends back a "data" command invoked our
803	# the slave interpreter. The purpose is to collect the min/max of the
804	# volume sent to the render server. Since the client (nanovisviewer)
805	# doesn't parse 3D data formats, we rely on the server (nanovis) to
806	# tell us what the limits are. Once we've received the limits to all
807	# the data we've sent (tracked by _recvdDatasets) we can then determine
808	# what the transfer functions are for these volumes.
809	#
810	#
811	# Note: There is a considerable tradeoff in having the server report
812	# back what the data limits are. It means that much of the code
813	# having to do with transfer-functions has to wait for the data
814	# to come back, since the isomarkers are calculated based upon
815	# the data limits. The client code is much messier because of
816	# this. The alternative is to parse any of the 3D formats on the
817	# client side.
818	#
819	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
820	if { ![isconnected] } {
821	return
822	}
823
824	# Arguments from server are name value pairs. Stuff them in an array.
825	array set info $args
826
827	set tag $info(tag)
828	set parts [split $tag -]
829
830	#
831	# Volumes don't exist until we're told about them.
832	#
833	set dataobj [lindex $parts 0]
834	set _serverDatasets($tag) 1
835	if { $_settings($this-volume) && $dataobj == $_first } {
836	SendCmd "volume state 1 $tag"
837	}
838	set _limits($tag-min) $info(min); # Minimum value of the volume.
839	set _limits($tag-max) $info(max); # Maximum value of the volume.
840	set _limits(vmin) $info(vmin); # Overall minimum value.
841	set _limits(vmax) $info(vmax); # Overall maximum value.
842
843	unset _recvdDatasets($tag)
844	if { [array size _recvdDatasets] == 0 } {
845	# The active transfer function is by default the first component of
846	# the first data object. This assumes that the data is always
847	# successfully transferred.
848	updatetransferfuncs
849	}
850	}
851
852	# ----------------------------------------------------------------------
853	# USAGE: Rebuild
854	#
855	# Called automatically whenever something changes that affects the
856	# data in the widget. Clears any existing data and rebuilds the
857	# widget to display new data.
858	# ----------------------------------------------------------------------
859	itcl::body Rappture::NanovisViewer::Rebuild {} {
860	set w [winfo width $itk_component(3dview)]
861	set h [winfo height $itk_component(3dview)]
862	if { $w < 2 \|\| $h < 2 } {
863	$_dispatcher event -idle !rebuild
864	return
865	}
866
867	# Turn on buffering of commands to the server. We don't want to
868	# be preempted by a server disconnect/reconnect (which automatically
869	# generates a new call to Rebuild).
870	StartBufferingCommands
871
872	# Hide all the isomarkers. Can't remove them. Have to remember the
873	# settings since the user may have created/deleted/moved markers.
874
875	foreach tf [array names _isomarkers] {
876	foreach m $_isomarkers($tf) {
877	$m visible no
878	}
879	}
880
881	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
882	set _width $w
883	set _height $h
884	$_arcball resize $w $h
885	DoResize
886	}
887	foreach dataobj [get] {
888	foreach cname [$dataobj components] {
889	set tag $dataobj-$cname
890	if { ![info exists _serverDatasets($tag)] } {
891	# Send the data as one huge base64-encoded mess -- yuck!
892	if { [$dataobj type] == "dx" } {
893	if { ![$dataobj isvalid] } {
894	puts stderr "??? $dataobj is invalid"
895	}
896	set data [$dataobj values $cname]
897	} else {
898	set data [$dataobj vtkdata $cname]
899	if 0 {
900	set f [open "/tmp/volume.vtk" "w"]
901	puts $f $data
902	close $f
903	}
904	}
905	set nbytes [string length $data]
906	if { $_reportClientInfo } {
907	set info {}
908	lappend info "tool_id" [$dataobj hints toolId]
909	lappend info "tool_name" [$dataobj hints toolName]
910	lappend info "tool_version" [$dataobj hints toolRevision]
911	lappend info "tool_title" [$dataobj hints toolTitle]
912	lappend info "dataset_label" [$dataobj hints label]
913	lappend info "dataset_size" $nbytes
914	lappend info "dataset_tag" $tag
915	SendCmd "clientinfo [list $info]"
916	}
917	SendCmd "volume data follows $nbytes $tag"
918	append _outbuf $data
919	set _recvdDatasets($tag) 1
920	set _serverDatasets($tag) 0
921	}
922	NameTransferFunc $dataobj $cname
923	}
924	}
925	set _first [lindex [get] 0]
926	if { $_reset } {
927	#
928	# Reset the camera and other view parameters
929	#
930	set _settings($this-qw) $_view(qw)
931	set _settings($this-qx) $_view(qx)
932	set _settings($this-qy) $_view(qy)
933	set _settings($this-qz) $_view(qz)
934	set _settings($this-xpan) $_view(xpan)
935	set _settings($this-ypan) $_view(ypan)
936	set _settings($this-zoom) $_view(zoom)
937
938	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
939	$_arcball quaternion $q
940	SendCmd "camera orient $q"
941	SendCmd "camera reset"
942	PanCamera
943	SendCmd "camera zoom $_view(zoom)"
944	InitSettings light2side light transp isosurface grid axes
945
946	foreach axis {x y z} {
947	# Turn off cutplanes for all volumes
948	SendCmd "cutplane state 0 $axis"
949	}
950	if {"" != $_first} {
951	set axis [$_first hints updir]
952	if { "" != $axis } {
953	SendCmd "up $axis"
954	}
955	set location [$_first hints camera]
956	if { $location != "" } {
957	array set _view $location
958	}
959	}
960	}
961	# Outline seems to need to be reset every update.
962	InitSettings outline
963	# nothing to send -- activate the proper ivol
964	SendCmd "volume state 0"
965	if {"" != $_first} {
966	set datasets [array names _serverDatasets $_first-*]
967	if { $datasets != "" } {
968	SendCmd "volume state 1 $datasets"
969	}
970	# If the first volume already exists on the server, then make sure
971	# we display the proper transfer function in the legend.
972	set cname [lindex [$_first components] 0]
973	if { [info exists _serverDatasets($_first-$cname)] } {
974	updatetransferfuncs
975	}
976	}
977	# Actually write the commands to the server socket. If it fails, we don't
978	# care. We're finished here.
979	blt::busy hold $itk_component(hull)
980	StopBufferingCommands
981	blt::busy release $itk_component(hull)
982	set _reset 0
983	}
984
985	# ----------------------------------------------------------------------
986	# USAGE: CurrentDatasets ?-cutplanes?
987	#
988	# Returns a list of volume server IDs for the current volume being
989	# displayed. This is normally a single ID, but it might be a list
990	# of IDs if the current data object has multiple components.
991	# ----------------------------------------------------------------------
992	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
993	set rlist ""
994	if { $_first == "" } {
995	return
996	}
997	foreach cname [$_first components] {
998	set tag $_first-$cname
999	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
1000	array set styles {
1001	-cutplanes 1
1002	}
1003	array set styles [lindex [$_first components -style $cname] 0]
1004	if { $what != "-cutplanes" \|\| $styles(-cutplanes) } {
1005	lappend rlist $tag
1006	}
1007	}
1008	}
1009	return $rlist
1010	}
1011
1012	# ----------------------------------------------------------------------
1013	# USAGE: Zoom in
1014	# USAGE: Zoom out
1015	# USAGE: Zoom reset
1016	#
1017	# Called automatically when the user clicks on one of the zoom
1018	# controls for this widget. Changes the zoom for the current view.
1019	# ----------------------------------------------------------------------
1020	itcl::body Rappture::NanovisViewer::Zoom {option} {
1021	switch -- $option {
1022	"in" {
1023	set _view(zoom) [expr {$_view(zoom)*1.25}]
1024	set _settings($this-zoom) $_view(zoom)
1025	SendCmd "camera zoom $_view(zoom)"
1026	}
1027	"out" {
1028	set _view(zoom) [expr {$_view(zoom)*0.8}]
1029	set _settings($this-zoom) $_view(zoom)
1030	SendCmd "camera zoom $_view(zoom)"
1031	}
1032	"reset" {
1033	array set _view {
1034	qw 0.853553
1035	qx -0.353553
1036	qy 0.353553
1037	qz 0.146447
1038	zoom 1.0
1039	xpan 0
1040	ypan 0
1041	}
1042	if { $_first != "" } {
1043	set location [$_first hints camera]
1044	if { $location != "" } {
1045	array set _view $location
1046	}
1047	}
1048	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1049	$_arcball quaternion $q
1050	SendCmd "camera orient $q"
1051	SendCmd "camera reset"
1052	set _settings($this-qw) $_view(qw)
1053	set _settings($this-qx) $_view(qx)
1054	set _settings($this-qy) $_view(qy)
1055	set _settings($this-qz) $_view(qz)
1056	set _settings($this-xpan) $_view(xpan)
1057	set _settings($this-ypan) $_view(ypan)
1058	set _settings($this-zoom) $_view(zoom)
1059	}
1060	}
1061	}
1062
1063	itcl::body Rappture::NanovisViewer::PanCamera {} {
1064	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1065	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1066	set x $_view(xpan)
1067	set y $_view(ypan)
1068	SendCmd "camera pan $x $y"
1069	}
1070
1071
1072	# ----------------------------------------------------------------------
1073	# USAGE: Rotate click <x> <y>
1074	# USAGE: Rotate drag <x> <y>
1075	# USAGE: Rotate release <x> <y>
1076	#
1077	# Called automatically when the user clicks/drags/releases in the
1078	# plot area. Moves the plot according to the user's actions.
1079	# ----------------------------------------------------------------------
1080	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1081	switch -- $option {
1082	click {
1083	$itk_component(3dview) configure -cursor fleur
1084	set _click(x) $x
1085	set _click(y) $y
1086	}
1087	drag {
1088	if {[array size _click] == 0} {
1089	Rotate click $x $y
1090	} else {
1091	set w [winfo width $itk_component(3dview)]
1092	set h [winfo height $itk_component(3dview)]
1093	if {$w <= 0 \|\| $h <= 0} {
1094	return
1095	}
1096
1097	if {[catch {
1098	# this fails sometimes for no apparent reason
1099	set dx [expr {double($x-$_click(x))/$w}]
1100	set dy [expr {double($y-$_click(y))/$h}]
1101	}]} {
1102	return
1103	}
1104
1105	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1106	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1107	set _settings($this-qw) $_view(qw)
1108	set _settings($this-qx) $_view(qx)
1109	set _settings($this-qy) $_view(qy)
1110	set _settings($this-qz) $_view(qz)
1111	SendCmd "camera orient $q"
1112
1113	set _click(x) $x
1114	set _click(y) $y
1115	}
1116	}
1117	release {
1118	Rotate drag $x $y
1119	$itk_component(3dview) configure -cursor ""
1120	catch {unset _click}
1121	}
1122	default {
1123	error "bad option \"$option\": should be click, drag, release"
1124	}
1125	}
1126	}
1127
1128	# ----------------------------------------------------------------------
1129	# USAGE: $this Pan click x y
1130	# $this Pan drag x y
1131	# $this Pan release x y
1132	#
1133	# Called automatically when the user clicks on one of the zoom
1134	# controls for this widget. Changes the zoom for the current view.
1135	# ----------------------------------------------------------------------
1136	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1137	# Experimental stuff
1138	set w [winfo width $itk_component(3dview)]
1139	set h [winfo height $itk_component(3dview)]
1140	if { $option == "set" } {
1141	set x [expr $x / double($w)]
1142	set y [expr $y / double($h)]
1143	set _view(xpan) [expr $_view(xpan) + $x]
1144	set _view(ypan) [expr $_view(ypan) + $y]
1145	PanCamera
1146	set _settings($this-xpan) $_view(xpan)
1147	set _settings($this-ypan) $_view(ypan)
1148	return
1149	}
1150	if { $option == "click" } {
1151	set _click(x) $x
1152	set _click(y) $y
1153	$itk_component(3dview) configure -cursor hand1
1154	}
1155	if { $option == "drag" \|\| $option == "release" } {
1156	set dx [expr ($_click(x) - $x)/double($w)]
1157	set dy [expr ($_click(y) - $y)/double($h)]
1158	set _click(x) $x
1159	set _click(y) $y
1160	set _view(xpan) [expr $_view(xpan) - $dx]
1161	set _view(ypan) [expr $_view(ypan) - $dy]
1162	PanCamera
1163	set _settings($this-xpan) $_view(xpan)
1164	set _settings($this-ypan) $_view(ypan)
1165	}
1166	if { $option == "release" } {
1167	$itk_component(3dview) configure -cursor ""
1168	}
1169	}
1170
1171	# ----------------------------------------------------------------------
1172	# USAGE: InitSettings <what> ?<value>?
1173	#
1174	# Used internally to update rendering settings whenever parameters
1175	# change in the popup settings panel. Sends the new settings off
1176	# to the back end.
1177	# ----------------------------------------------------------------------
1178	itcl::body Rappture::NanovisViewer::InitSettings { args } {
1179	foreach arg $args {
1180	AdjustSetting $arg
1181	}
1182	}
1183
1184	# ----------------------------------------------------------------------
1185	# USAGE: AdjustSetting <what> ?<value>?
1186	#
1187	# Used internally to update rendering settings whenever parameters
1188	# change in the popup settings panel. Sends the new settings off
1189	# to the back end.
1190	# ----------------------------------------------------------------------
1191	itcl::body Rappture::NanovisViewer::AdjustSetting {what {value ""}} {
1192	if {![isconnected]} {
1193	return
1194	}
1195	switch -- $what {
1196	light {
1197	set val $_settings($this-light)
1198	set diffuse [expr {0.01*$val}]
1199	set ambient [expr {1.0-$diffuse}]
1200	set specularLevel 0.3
1201	set specularExp 90.0
1202	SendCmd "volume shading ambient $ambient"
1203	SendCmd "volume shading diffuse $diffuse"
1204	SendCmd "volume shading specularLevel $specularLevel"
1205	SendCmd "volume shading specularExp $specularExp"
1206	}
1207	light2side {
1208	set val $_settings($this-light2side)
1209	SendCmd "volume shading light2side $val"
1210	}
1211	transp {
1212	set val $_settings($this-transp)
1213	set sval [expr { 0.01 * double($val) }]
1214	SendCmd "volume shading opacity $sval"
1215	}
1216	opacity {
1217	set val $_settings($this-opacity)
1218	set sval [expr { 0.01 * double($val) }]
1219	foreach tf [array names _activeTfs] {
1220	set _settings($this-$tf-opacity) $sval
1221	set _activeTfs($tf) 0
1222	}
1223	updatetransferfuncs
1224	}
1225	thickness {
1226	if { [array names _activeTfs] > 0 } {
1227	set val $_settings($this-thickness)
1228	# Scale values between 0.00001 and 0.01000
1229	set sval [expr {0.0001*double($val)}]
1230	foreach tf [array names _activeTfs] {
1231	set _settings($this-$tf-thickness) $sval
1232	set _activeTfs($tf) 0
1233	}
1234	updatetransferfuncs
1235	}
1236	}
1237	"outline" {
1238	SendCmd "volume outline state $_settings($this-outline)"
1239	}
1240	"isosurface" {
1241	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1242	}
1243	"colormap" {
1244	set color [$itk_component(colormap) value]
1245	set _settings(colormap) $color
1246	# Only set the colormap on the first volume. Ignore the others.
1247	#ResetColormap $color
1248	}
1249	"grid" {
1250	SendCmd "grid visible $_settings($this-grid)"
1251	}
1252	"axes" {
1253	SendCmd "axis visible $_settings($this-axes)"
1254	}
1255	"legend" {
1256	if { $_settings($this-legend) } {
1257	blt::table $itk_component(plotarea) \
1258	0,0 $itk_component(3dview) -fill both \
1259	1,0 $itk_component(legend) -fill x
1260	blt::table configure $itk_component(plotarea) r1 -resize none
1261	} else {
1262	blt::table forget $itk_component(legend)
1263	}
1264	}
1265	"volume" {
1266	set datasets [CurrentDatasets -cutplanes]
1267	SendCmd "volume data state $_settings($this-volume) $datasets"
1268	}
1269	"xcutplane" - "ycutplane" - "zcutplane" {
1270	set axis [string range $what 0 0]
1271	set bool $_settings($this-$what)
1272	set datasets [CurrentDatasets -cutplanes]
1273	set tag [lindex $datasets 0]
1274	SendCmd "cutplane state $bool $axis $tag"
1275	if { $bool } {
1276	$itk_component(${axis}CutScale) configure -state normal \
1277	-troughcolor white
1278	} else {
1279	$itk_component(${axis}CutScale) configure -state disabled \
1280	-troughcolor grey82
1281	}
1282	}
1283	default {
1284	error "don't know how to fix $what"
1285	}
1286	}
1287	}
1288
1289	# ----------------------------------------------------------------------
1290	# USAGE: FixLegend
1291	#
1292	# Used internally to update the legend area whenever it changes size
1293	# or when the field changes. Asks the server to send a new legend
1294	# for the current field.
1295	# ----------------------------------------------------------------------
1296	itcl::body Rappture::NanovisViewer::FixLegend {} {
1297	set _resizeLegendPending 0
1298	set lineht [font metrics $itk_option(-font) -linespace]
1299	set w [expr {$_width-20}]
1300	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1301	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1302	set tag [lindex [CurrentDatasets] 0]
1303	if { [info exists _dataset2style($tag)] } {
1304	SendCmd "legend $_dataset2style($tag) $w $h"
1305	}
1306	} else {
1307	# Can't do this as this will remove the items associated with the
1308	# isomarkers.
1309
1310	#$itk_component(legend) delete all
1311	}
1312	}
1313
1314	#
1315	# NameTransferFunc --
1316	#
1317	# Creates a transfer function name based on the <style> settings in the
1318	# library run.xml file. This placeholder will be used later to create
1319	# and send the actual transfer function once the data info has been sent
1320	# to us by the render server. [We won't know the volume limits until the
1321	# server parses the 3D data and sends back the limits via ReceiveData.]
1322	#
1323	# FIXME: The current way we generate transfer-function names completely
1324	# ignores the -markers option. The problem is that we are forced
1325	# to compute the name from an increasing complex set of values:
1326	# color, levels, marker, opacity. I think we're stuck doing it
1327	# now.
1328	#
1329	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj cname } {
1330	array set styles {
1331	-color BCGYR
1332	-levels 6
1333	-opacity 1.0
1334	-markers ""
1335	}
1336	set tag $dataobj-$cname
1337	array set styles [lindex [$dataobj components -style $cname] 0]
1338	set tf "$styles(-color):$styles(-levels):$styles(-opacity)"
1339	set _dataset2style($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 been set up. 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 styles {
1355	-color BCGYR
1356	-levels 6
1357	-opacity 1.0
1358	-markers ""
1359	-alphamap ""
1360	}
1361
1362	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1363	array set styles [lindex [$dataobj components -style $cname] 0]
1364
1365	# We have to parse the style attributes for a volume using this
1366	# transfer-function once. This sets up the initial isomarkers for the
1367	# transfer function. The user may add/delete markers, so we have to
1368	# maintain a list of markers for each transfer-function. We use the one
1369	# of the volumes (the first in the list) using the transfer-function as a
1370	# reference.
1371	#
1372	# FIXME: The current way we generate transfer-function names completely
1373	# ignores the -markers option. The problem is that we are forced
1374	# to compute the name from an increasing complex set of values:
1375	# color, levels, marker, opacity. I think the cow's out of the
1376	# barn on this one.
1377
1378	if { ![info exists _isomarkers($tf)] } {
1379	# Have to defer creation of isomarkers until we have data limits
1380	if { [info exists styles(-markers)] &&
1381	[llength $styles(-markers)] > 0 } {
1382	ParseMarkersOption $tf $styles(-markers)
1383	} else {
1384	ParseLevelsOption $tf $styles(-levels)
1385	}
1386	if { $styles(-alphamap) != "" } {
1387	set _alphamap($cname) $styles(-alphamap)
1388	}
1389	}
1390	set cmap [ColorsToColormap $styles(-color)]
1391	set tag $this-$tf
1392	if { ![info exists _settings($tag-opacity)] } {
1393	set _settings($tag-opacity) $styles(-opacity)
1394	}
1395	set max 1.0 ;#$_settings($tag-opacity)
1396
1397	set isovalues {}
1398	foreach m $_isomarkers($tf) {
1399	lappend isovalues [$m relval]
1400	}
1401	# Sort the isovalues
1402	set isovalues [lsort -real $isovalues]
1403
1404	if { ![info exists _settings($tag-thickness)]} {
1405	set _settings($tag-thickness) 0.005
1406	}
1407	set delta $_settings($tag-thickness)
1408
1409	set first [lindex $isovalues 0]
1410	set last [lindex $isovalues end]
1411	set wmap ""
1412	if { $first == "" \|\| $first != 0.0 } {
1413	lappend wmap 0.0 0.0
1414	}
1415	foreach x $isovalues {
1416	set x1 [expr {$x-$delta-0.00001}]
1417	set x2 [expr {$x-$delta}]
1418	set x3 [expr {$x+$delta}]
1419	set x4 [expr {$x+$delta+0.00001}]
1420	if { $x1 < 0.0 } {
1421	set x1 0.0
1422	} elseif { $x1 > 1.0 } {
1423	set x1 1.0
1424	}
1425	if { $x2 < 0.0 } {
1426	set x2 0.0
1427	} elseif { $x2 > 1.0 } {
1428	set x2 1.0
1429	}
1430	if { $x3 < 0.0 } {
1431	set x3 0.0
1432	} elseif { $x3 > 1.0 } {
1433	set x3 1.0
1434	}
1435	if { $x4 < 0.0 } {
1436	set x4 0.0
1437	} elseif { $x4 > 1.0 } {
1438	set x4 1.0
1439	}
1440	# add spikes in the middle
1441	lappend wmap $x1 0.0
1442	lappend wmap $x2 $max
1443	lappend wmap $x3 $max
1444	lappend wmap $x4 0.0
1445	}
1446	if { $last == "" \|\| $last != 1.0 } {
1447	lappend wmap 1.0 0.0
1448	}
1449	if { [info exists _alphamap($cname)] } {
1450	set wmap $_alphamap($cname)
1451	}
1452	SendCmd [list transfunc define $tf $cmap $wmap]
1453	}
1454
1455	# ----------------------------------------------------------------------
1456	# CONFIGURATION OPTION: -plotbackground
1457	# ----------------------------------------------------------------------
1458	itcl::configbody Rappture::NanovisViewer::plotbackground {
1459	if { [isconnected] } {
1460	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1461	#fix this!
1462	#SendCmd "color background $r $g $b"
1463	}
1464	}
1465
1466	# ----------------------------------------------------------------------
1467	# CONFIGURATION OPTION: -plotforeground
1468	# ----------------------------------------------------------------------
1469	itcl::configbody Rappture::NanovisViewer::plotforeground {
1470	if { [isconnected] } {
1471	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1472	#fix this!
1473	#SendCmd "color background $r $g $b"
1474	}
1475	}
1476
1477	# ----------------------------------------------------------------------
1478	# CONFIGURATION OPTION: -plotoutline
1479	# ----------------------------------------------------------------------
1480	itcl::configbody Rappture::NanovisViewer::plotoutline {
1481	# Must check if we are connected because this routine is called from the
1482	# class body when the -plotoutline itk_option is defined. At that point
1483	# the NanovisViewer class constructor hasn't been called, so we can't
1484	# start sending commands to visualization server.
1485	if { [isconnected] } {
1486	if {"" == $itk_option(-plotoutline)} {
1487	SendCmd "volume outline state off"
1488	} else {
1489	SendCmd "volume outline state on"
1490	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1491	}
1492	}
1493	}
1494
1495	#
1496	# The -levels option takes a single value that represents the number
1497	# of evenly distributed markers based on the current data range. Each
1498	# marker is a relative value from 0.0 to 1.0.
1499	#
1500	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1501	set c $itk_component(legend)
1502	regsub -all "," $levels " " levels
1503	if {[string is int $levels]} {
1504	for {set i 1} { $i <= $levels } {incr i} {
1505	set x [expr {double($i)/($levels+1)}]
1506	set m [Rappture::IsoMarker \#auto $c $this $tf]
1507	$m relval $x
1508	lappend _isomarkers($tf) $m
1509	}
1510	} else {
1511	foreach x $levels {
1512	set m [Rappture::IsoMarker \#auto $c $this $tf]
1513	$m relval $x
1514	lappend _isomarkers($tf) $m
1515	}
1516	}
1517	}
1518
1519	#
1520	# The -markers option takes a list of zero or more values (the values
1521	# may be separated either by spaces or commas) that have the following
1522	# format:
1523	#
1524	# N% Percent of current total data range. Converted to
1525	# to a relative value between 0.0 and 1.0.
1526	# N Absolute value of marker. If the marker is outside of
1527	# the current range, it will be displayed on the outer
1528	# edge of the legends, but it range it represents will
1529	# not be seen.
1530	#
1531	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1532	set c $itk_component(legend)
1533	regsub -all "," $markers " " markers
1534	foreach marker $markers {
1535	set n [scan $marker "%g%s" value suffix]
1536	if { $n == 2 && $suffix == "%" } {
1537	# ${n}% : Set relative value.
1538	set value [expr {$value * 0.01}]
1539	set m [Rappture::IsoMarker \#auto $c $this $tf]
1540	$m relval $value
1541	lappend _isomarkers($tf) $m
1542	} else {
1543	# ${n} : Set absolute value.
1544	set m [Rappture::IsoMarker \#auto $c $this $tf]
1545	$m absval $value
1546	lappend _isomarkers($tf) $m
1547	}
1548	}
1549	}
1550
1551	# ----------------------------------------------------------------------
1552	# USAGE: UndateTransferFuncs
1553	# ----------------------------------------------------------------------
1554	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1555	$_dispatcher event -idle !send_transfunc
1556	}
1557
1558	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1559	if { $_first == "" } {
1560	error "active transfer function isn't set"
1561	}
1562	set tag [lindex [CurrentDatasets] 0]
1563	set tf $_dataset2style($tag)
1564	set c $itk_component(legend)
1565	set m [Rappture::IsoMarker \#auto $c $this $tf]
1566	set w [winfo width $c]
1567	$m relval [expr {double($x-10)/($w-20)}]
1568	lappend _isomarkers($tf) $m
1569	updatetransferfuncs
1570	return 1
1571	}
1572
1573	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1574	set tf [$marker transferfunc]
1575	set bool 0
1576	if { [info exists _isomarkers($tf)] } {
1577	set list {}
1578	set marker [namespace tail $marker]
1579	foreach m $_isomarkers($tf) {
1580	set sx [$m screenpos]
1581	if { $m != $marker } {
1582	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1583	$marker relval [$m relval]
1584	itcl::delete object $m
1585	bell
1586	set bool 1
1587	continue
1588	}
1589	}
1590	lappend list $m
1591	}
1592	set _isomarkers($tf) $list
1593	updatetransferfuncs
1594	}
1595	return $bool
1596	}
1597
1598	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1599	set tf [$marker transferfunc]
1600	if { [info exists _isomarkers($tf)] } {
1601	set marker [namespace tail $marker]
1602	foreach m $_isomarkers($tf) {
1603	set sx [$m screenpos]
1604	if { $m != $marker } {
1605	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1606	$m activate $bool
1607	}
1608	}
1609	}
1610	return ""
1611	}
1612
1613	itcl::body Rappture::NanovisViewer::limits { tf } {
1614	set _limits(min) 0.0
1615	set _limits(max) 1.0
1616	if { ![info exists _style2datasets($tf)] } {
1617	return [array get _limits]
1618	}
1619	set min ""; set max ""
1620	foreach tag $_style2datasets($tf) {
1621	if { ![info exists _serverDatasets($tag)] } {
1622	continue
1623	}
1624	if { ![info exists _limits($tag-min)] } {
1625	continue
1626	}
1627	if { $min == "" \|\| $min > $_limits($tag-min) } {
1628	set min $_limits($tag-min)
1629	}
1630	if { $max == "" \|\| $max < $_limits($tag-max) } {
1631	set max $_limits($tag-max)
1632	}
1633	}
1634	if { $min != "" } {
1635	set _limits(min) $min
1636	}
1637	if { $max != "" } {
1638	set _limits(max) $max
1639	}
1640	return [array get _limits]
1641	}
1642
1643
1644	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1645	foreach { key value } {
1646	grid 0
1647	axes 1
1648	outline 0
1649	volume 1
1650	legend 1
1651	particles 1
1652	lic 1
1653	} {
1654	set _settings($this-$key) $value
1655	}
1656
1657	set fg [option get $itk_component(hull) font Font]
1658	#set bfg [option get $itk_component(hull) boldFont Font]
1659
1660	set inner [$itk_component(main) insert end \
1661	-title "View Settings" \
1662	-icon [Rappture::icon wrench]]
1663	$inner configure -borderwidth 4
1664
1665	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1666	checkbutton $inner.isosurface \
1667	-text "Isosurface shading" \
1668	-variable [itcl::scope _settings($this-isosurface)] \
1669	-command [itcl::code $this AdjustSetting isosurface] \
1670	-font "Arial 9"
1671
1672	checkbutton $inner.axes \
1673	-text "Axes" \
1674	-variable [itcl::scope _settings($this-axes)] \
1675	-command [itcl::code $this AdjustSetting axes] \
1676	-font "Arial 9"
1677
1678	checkbutton $inner.grid \
1679	-text "Grid" \
1680	-variable [itcl::scope _settings($this-grid)] \
1681	-command [itcl::code $this AdjustSetting grid] \
1682	-font "Arial 9"
1683
1684	checkbutton $inner.outline \
1685	-text "Outline" \
1686	-variable [itcl::scope _settings($this-outline)] \
1687	-command [itcl::code $this AdjustSetting outline] \
1688	-font "Arial 9"
1689
1690	checkbutton $inner.legend \
1691	-text "Legend" \
1692	-variable [itcl::scope _settings($this-legend)] \
1693	-command [itcl::code $this AdjustSetting legend] \
1694	-font "Arial 9"
1695
1696	checkbutton $inner.volume \
1697	-text "Volume" \
1698	-variable [itcl::scope _settings($this-volume)] \
1699	-command [itcl::code $this AdjustSetting volume] \
1700	-font "Arial 9"
1701
1702	blt::table $inner \
1703	0,0 $inner.axes -cspan 2 -anchor w \
1704	1,0 $inner.grid -cspan 2 -anchor w \
1705	2,0 $inner.outline -cspan 2 -anchor w \
1706	3,0 $inner.volume -cspan 2 -anchor w \
1707	4,0 $inner.legend -cspan 2 -anchor w
1708
1709	if 0 {
1710	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1711	}
1712	blt::table configure $inner r* -resize none
1713	blt::table configure $inner r5 -resize expand
1714	}
1715
1716	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1717	foreach { key value } {
1718	light2side 1
1719	light 40
1720	transp 50
1721	opacity 100
1722	thickness 350
1723	} {
1724	set _settings($this-$key) $value
1725	}
1726
1727	set inner [$itk_component(main) insert end \
1728	-title "Volume Settings" \
1729	-icon [Rappture::icon volume-on]]
1730	$inner configure -borderwidth 4
1731
1732	set fg [option get $itk_component(hull) font Font]
1733	#set bfg [option get $itk_component(hull) boldFont Font]
1734
1735	checkbutton $inner.vol -text "Show volume" -font $fg \
1736	-variable [itcl::scope _settings($this-volume)] \
1737	-command [itcl::code $this AdjustSetting volume]
1738	label $inner.shading -text "Shading:" -font $fg
1739
1740	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1741	-variable [itcl::scope _settings($this-light2side)] \
1742	-command [itcl::code $this AdjustSetting light2side]
1743
1744	label $inner.dim -text "Glow" -font $fg
1745	::scale $inner.light -from 0 -to 100 -orient horizontal \
1746	-variable [itcl::scope _settings($this-light)] \
1747	-width 10 \
1748	-showvalue off -command [itcl::code $this AdjustSetting light]
1749	label $inner.bright -text "Surface" -font $fg
1750
1751	label $inner.fog -text "Clear" -font $fg
1752	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1753	-variable [itcl::scope _settings($this-transp)] \
1754	-width 10 \
1755	-showvalue off -command [itcl::code $this AdjustSetting transp]
1756	label $inner.plastic -text "Opaque" -font $fg
1757
1758	label $inner.clear -text "Clear" -font $fg
1759	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1760	-variable [itcl::scope _settings($this-opacity)] \
1761	-width 10 \
1762	-showvalue off -command [itcl::code $this AdjustSetting opacity]
1763	label $inner.opaque -text "Opaque" -font $fg
1764
1765	label $inner.thin -text "Thin" -font $fg
1766	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1767	-variable [itcl::scope _settings($this-thickness)] \
1768	-width 10 \
1769	-showvalue off -command [itcl::code $this AdjustSetting thickness]
1770	label $inner.thick -text "Thick" -font $fg
1771
1772	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1773	itk_component add colormap {
1774	Rappture::Combobox $inner.colormap -width 10 -editable no
1775	}
1776
1777	$inner.colormap choices insert end [GetColormapList -includeNone]
1778	$itk_component(colormap) value "BCGYR"
1779	bind $inner.colormap <<Value>> \
1780	[itcl::code $this AdjustSetting colormap]
1781
1782	blt::table $inner \
1783	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1784	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1785	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1786	3,0 $inner.dim -anchor e -pady 2 \
1787	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1788	3,3 $inner.bright -anchor w -pady 2 \
1789	4,0 $inner.fog -anchor e -pady 2 \
1790	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
1791	4,3 $inner.plastic -anchor w -pady 2 \
1792	5,0 $inner.thin -anchor e -pady 2 \
1793	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1794	5,3 $inner.thick -anchor w -pady 2
1795
1796	blt::table configure $inner c0 c1 c3 r* -resize none
1797	blt::table configure $inner r6 -resize expand
1798	}
1799
1800	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1801	set inner [$itk_component(main) insert end \
1802	-title "Cutplane Settings" \
1803	-icon [Rappture::icon cutbutton]]
1804	$inner configure -borderwidth 4
1805
1806	# X-value slicer...
1807	itk_component add xCutButton {
1808	Rappture::PushButton $inner.xbutton \
1809	-onimage [Rappture::icon x-cutplane] \
1810	-offimage [Rappture::icon x-cutplane] \
1811	-command [itcl::code $this AdjustSetting xcutplane] \
1812	-variable [itcl::scope _settings($this-xcutplane)]
1813	}
1814	Rappture::Tooltip::for $itk_component(xCutButton) \
1815	"Toggle the X cut plane on/off"
1816
1817	itk_component add xCutScale {
1818	::scale $inner.xval -from 100 -to 0 \
1819	-width 10 -orient vertical -showvalue off \
1820	-borderwidth 1 -highlightthickness 0 \
1821	-command [itcl::code $this Slice move x] \
1822	-variable [itcl::scope _settings($this-xcutposition)]
1823	} {
1824	usual
1825	ignore -borderwidth -highlightthickness
1826	}
1827	# Set the default cutplane value before disabling the scale.
1828	$itk_component(xCutScale) set 50
1829	$itk_component(xCutScale) configure -state disabled
1830	Rappture::Tooltip::for $itk_component(xCutScale) \
1831	"@[itcl::code $this SlicerTip x]"
1832
1833	# Y-value slicer...
1834	itk_component add yCutButton {
1835	Rappture::PushButton $inner.ybutton \
1836	-onimage [Rappture::icon y-cutplane] \
1837	-offimage [Rappture::icon y-cutplane] \
1838	-command [itcl::code $this AdjustSetting ycutplane] \
1839	-variable [itcl::scope _settings($this-ycutplane)]
1840	}
1841	Rappture::Tooltip::for $itk_component(yCutButton) \
1842	"Toggle the Y cut plane on/off"
1843
1844	itk_component add yCutScale {
1845	::scale $inner.yval -from 100 -to 0 \
1846	-width 10 -orient vertical -showvalue off \
1847	-borderwidth 1 -highlightthickness 0 \
1848	-command [itcl::code $this Slice move y] \
1849	-variable [itcl::scope _settings($this-ycutposition)]
1850	} {
1851	usual
1852	ignore -borderwidth -highlightthickness
1853	}
1854	Rappture::Tooltip::for $itk_component(yCutScale) \
1855	"@[itcl::code $this SlicerTip y]"
1856	# Set the default cutplane value before disabling the scale.
1857	$itk_component(yCutScale) set 50
1858	$itk_component(yCutScale) configure -state disabled
1859
1860	# Z-value slicer...
1861	itk_component add zCutButton {
1862	Rappture::PushButton $inner.zbutton \
1863	-onimage [Rappture::icon z-cutplane] \
1864	-offimage [Rappture::icon z-cutplane] \
1865	-command [itcl::code $this AdjustSetting zcutplane] \
1866	-variable [itcl::scope _settings($this-zcutplane)]
1867	}
1868	Rappture::Tooltip::for $itk_component(zCutButton) \
1869	"Toggle the Z cut plane on/off"
1870
1871	itk_component add zCutScale {
1872	::scale $inner.zval -from 100 -to 0 \
1873	-width 10 -orient vertical -showvalue off \
1874	-borderwidth 1 -highlightthickness 0 \
1875	-command [itcl::code $this Slice move z] \
1876	-variable [itcl::scope _settings($this-zcutposition)]
1877	} {
1878	usual
1879	ignore -borderwidth -highlightthickness
1880	}
1881	$itk_component(zCutScale) set 50
1882	$itk_component(zCutScale) configure -state disabled
1883	#$itk_component(zCutScale) configure -state disabled
1884	Rappture::Tooltip::for $itk_component(zCutScale) \
1885	"@[itcl::code $this SlicerTip z]"
1886
1887	blt::table $inner \
1888	1,1 $itk_component(xCutButton) \
1889	1,2 $itk_component(yCutButton) \
1890	1,3 $itk_component(zCutButton) \
1891	0,1 $itk_component(xCutScale) \
1892	0,2 $itk_component(yCutScale) \
1893	0,3 $itk_component(zCutScale)
1894
1895	blt::table configure $inner r0 r1 c* -resize none
1896	blt::table configure $inner r2 c4 -resize expand
1897	blt::table configure $inner c0 -width 2
1898	blt::table configure $inner c1 c2 c3 -padx 2
1899	}
1900
1901	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1902	set inner [$itk_component(main) insert end \
1903	-title "Camera Settings" \
1904	-icon [Rappture::icon camera]]
1905	$inner configure -borderwidth 4
1906
1907	label $inner.view_l -text "view" -font "Arial 9"
1908	set f [frame $inner.view]
1909	foreach side { front back left right top bottom } {
1910	button $f.$side -image [Rappture::icon view$side] \
1911	-command [itcl::code $this SetOrientation $side]
1912	Rappture::Tooltip::for $f.$side "Change the view to $side"
1913	pack $f.$side -side left
1914	}
1915
1916	blt::table $inner \
1917	0,0 $inner.view_l -anchor e -pady 2 \
1918	0,1 $inner.view -anchor w -pady 2
1919
1920	set row 1
1921	set labels { qw qx qy qz xpan ypan zoom }
1922	foreach tag $labels {
1923	label $inner.${tag}label -text $tag -font "Arial 9"
1924	entry $inner.${tag} -font "Arial 9" -bg white \
1925	-textvariable [itcl::scope _settings($this-$tag)]
1926	bind $inner.${tag} <Return> \
1927	[itcl::code $this camera set ${tag}]
1928	bind $inner.${tag} <KP_Enter> \
1929	[itcl::code $this camera set ${tag}]
1930	blt::table $inner \
1931	$row,0 $inner.${tag}label -anchor e -pady 2 \
1932	$row,1 $inner.${tag} -anchor w -pady 2
1933	blt::table configure $inner r$row -resize none
1934	incr row
1935	}
1936
1937	blt::table configure $inner c* r* -resize none
1938	blt::table configure $inner c2 -resize expand
1939	blt::table configure $inner r$row -resize expand
1940	}
1941
1942	# ----------------------------------------------------------------------
1943	# USAGE: Slice move x\|y\|z <newval>
1944	#
1945	# Called automatically when the user drags the slider to move the
1946	# cut plane that slices 3D data. Gets the current value from the
1947	# slider and moves the cut plane to the appropriate point in the
1948	# data set.
1949	# ----------------------------------------------------------------------
1950	itcl::body Rappture::NanovisViewer::Slice {option args} {
1951	switch -- $option {
1952	move {
1953	if {[llength $args] != 2} {
1954	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1955	}
1956	set axis [lindex $args 0]
1957	set newval [lindex $args 1]
1958
1959	set newpos [expr {0.01*$newval}]
1960	set datasets [CurrentDatasets -cutplanes]
1961	set tag [lindex $datasets 0]
1962	SendCmd "cutplane position $newpos $axis $tag"
1963	}
1964	default {
1965	error "bad option \"$option\": should be axis, move, or volume"
1966	}
1967	}
1968	}
1969
1970	# ----------------------------------------------------------------------
1971	# USAGE: SlicerTip <axis>
1972	#
1973	# Used internally to generate a tooltip for the x/y/z slicer controls.
1974	# Returns a message that includes the current slicer value.
1975	# ----------------------------------------------------------------------
1976	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1977	set val [$itk_component(${axis}CutScale) get]
1978	# set val [expr {0.01*($val-50)
1979	# *($_limits(${axis}max)-$_limits(${axis}min))
1980	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1981	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1982	}
1983
1984
1985	itcl::body Rappture::NanovisViewer::DoResize {} {
1986	$_arcball resize $_width $_height
1987	SendCmd "screen size $_width $_height"
1988	set _resizePending 0
1989	}
1990
1991	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
1992	set _width $w
1993	set _height $h
1994	$_arcball resize $w $h
1995	if { !$_resizePending } {
1996	$_dispatcher event -idle !resize
1997	set _resizePending 1
1998	}
1999	}
2000
2001	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
2002	if { !$_resizeLegendPending } {
2003	$_dispatcher event -idle !legend
2004	set _resizeLegendPending 1
2005	}
2006	}
2007
2008	# camera --
2009	#
2010	itcl::body Rappture::NanovisViewer::camera {option args} {
2011	switch -- $option {
2012	"show" {
2013	puts [array get _view]
2014	}
2015	"set" {
2016	set who [lindex $args 0]
2017	set x $_settings($this-$who)
2018	set code [catch { string is double $x } result]
2019	if { $code != 0 \|\| !$result } {
2020	set _settings($this-$who) $_view($who)
2021	return
2022	}
2023	switch -- $who {
2024	"xpan" - "ypan" {
2025	set _view($who) $_settings($this-$who)
2026	PanCamera
2027	}
2028	"qx" - "qy" - "qz" - "qw" {
2029	set _view($who) $_settings($this-$who)
2030	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2031	$_arcball quaternion $q
2032	SendCmd "camera orient $q"
2033	}
2034	"zoom" {
2035	set _view($who) $_settings($this-$who)
2036	SendCmd "camera zoom $_view(zoom)"
2037	}
2038	}
2039	}
2040	}
2041	}
2042
2043	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2044	set flowobj ""
2045	foreach key [array names _obj2flow] {
2046	set flowobj $_obj2flow($key)
2047	break
2048	}
2049	if { $flowobj == "" } {
2050	return
2051	}
2052	if { [winfo exists $w.frame] } {
2053	destroy $w.frame
2054	}
2055	set inner [frame $w.frame]
2056	blt::table $w \
2057	5,0 $inner -fill both -cspan 2 -anchor nw
2058	array set hints [$dataobj hints]
2059
2060	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2061	blt::table $inner \
2062	1,0 $inner.volumes -anchor w \
2063	blt::table configure $inner c0 c1 -resize none
2064	blt::table configure $inner c2 -resize expand
2065
2066	set row 3
2067	set volumes [get]
2068	if { [llength $volumes] > 0 } {
2069	blt::table $inner $row,0 $inner.volumes -anchor w
2070	incr row
2071	}
2072	foreach vol $volumes {
2073	array unset info
2074	array set info $vol
2075	set name $info(name)
2076	if { ![info exists _settings($this-volume-$name)] } {
2077	set _settings($this-volume-$name) $info(hide)
2078	}
2079	checkbutton $inner.vol$row -text $info(label) \
2080	-variable [itcl::scope _settings($this-volume-$name)] \
2081	-onvalue 0 -offvalue 1 \
2082	-command [itcl::code $this volume $key $name] \
2083	-font "Arial 9"
2084	Rappture::Tooltip::for $inner.vol$row $info(description)
2085	blt::table $inner $row,0 $inner.vol$row -anchor w
2086	if { !$_settings($this-volume-$name) } {
2087	$inner.vol$row select
2088	}
2089	incr row
2090	}
2091	blt::table configure $inner r* -resize none
2092	blt::table configure $inner r$row -resize expand
2093	blt::table configure $inner c3 -resize expand
2094	event generate [winfo parent [winfo parent $w]] <Configure>
2095	}
2096
2097	itcl::body Rappture::NanovisViewer::volume { tag name } {
2098	set bool $_settings($this-volume-$name)
2099	SendCmd "volume statue $bool $name"
2100	}
2101
2102	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2103	array set positions {
2104	front "1 0 0 0"
2105	back "0 0 1 0"
2106	left "0.707107 0 -0.707107 0"
2107	right "0.707107 0 0.707107 0"
2108	top "0.707107 -0.707107 0 0"
2109	bottom "0.707107 0.707107 0 0"
2110	}
2111	foreach name { qw qx qy qz } value $positions($side) {
2112	set _view($name) $value
2113	}
2114	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2115	$_arcball quaternion $q
2116	SendCmd "camera orient $q"
2117	SendCmd "camera reset"
2118	set _view(xpan) 0
2119	set _view(ypan) 0
2120	set _view(zoom) 1.0
2121	set _settings($this-xpan) $_view(xpan)
2122	set _settings($this-ypan) $_view(ypan)
2123	set _settings($this-zoom) $_view(zoom)
2124	}
2125

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