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source: tags/1.3.5/gui/scripts/nanovisviewer.tcl @ 4753

Last change on this file since 4753 was 4753, checked in by ldelgass, 9 years ago
merge r4749 from trunk
File size: 74.9 KB

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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
148	# This
149	# indicates which isomarkers and transfer
150	# function to use when changing markers,
151	# opacity, or thickness.
152	common _downloadPopup ;# download options from popup
153	private common _hardcopy
154	private variable _width 0
155	private variable _height 0
156	private variable _resizePending 0
157	private variable _resizeLegendPending 0
158	}
159
160	itk::usual NanovisViewer {
161	keep -background -foreground -cursor -font
162	keep -plotbackground -plotforeground
163	}
164
165	# ----------------------------------------------------------------------
166	# CONSTRUCTOR
167	# ----------------------------------------------------------------------
168	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
169	set _serverType "nanovis"
170
171	# Draw legend event
172	$_dispatcher register !legend
173	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
174
175	# Send transfer functions event
176	$_dispatcher register !send_transfunc
177	$_dispatcher dispatch $this !send_transfunc \
178	"[itcl::code $this SendTransferFuncs]; list"
179
180	# Rebuild event
181	$_dispatcher register !rebuild
182	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
183
184	# Resize event
185	$_dispatcher register !resize
186	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
187
188	#
189	# Populate parser with commands handle incoming requests
190	#
191	$_parser alias image [itcl::code $this ReceiveImage]
192	$_parser alias legend [itcl::code $this ReceiveLegend]
193	$_parser alias data [itcl::code $this ReceiveData]
194
195	# Initialize the view to some default parameters.
196	array set _view {
197	qw 0.853553
198	qx -0.353553
199	qy 0.353553
200	qz 0.146447
201	zoom 1.0
202	xpan 0
203	ypan 0
204	}
205	set _arcball [blt::arcball create 100 100]
206	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
207	$_arcball quaternion $q
208
209	set _limits(vmin) 0.0
210	set _limits(vmax) 1.0
211	set _reset 1
212
213	array set _settings [subst {
214	$this-qw $_view(qw)
215	$this-qx $_view(qx)
216	$this-qy $_view(qy)
217	$this-qz $_view(qz)
218	$this-zoom $_view(zoom)
219	$this-xpan $_view(xpan)
220	$this-ypan $_view(ypan)
221	$this-volume 1
222	$this-xcutplane 0
223	$this-xcutposition 0
224	$this-ycutplane 0
225	$this-ycutposition 0
226	$this-zcutplane 0
227	$this-zcutposition 0
228	}]
229
230	itk_component add 3dview {
231	label $itk_component(plotarea).view -image $_image(plot) \
232	-highlightthickness 0 -borderwidth 0
233	} {
234	usual
235	ignore -highlightthickness -borderwidth -background
236	}
237	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
238
239	set f [$itk_component(main) component controls]
240	itk_component add reset {
241	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
242	-highlightthickness 0 \
243	-image [Rappture::icon reset-view] \
244	-command [itcl::code $this Zoom reset]
245	} {
246	usual
247	ignore -highlightthickness
248	}
249	pack $itk_component(reset) -side top -padx 2 -pady 2
250	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
251
252	itk_component add zoomin {
253	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
254	-highlightthickness 0 \
255	-image [Rappture::icon zoom-in] \
256	-command [itcl::code $this Zoom in]
257	} {
258	usual
259	ignore -highlightthickness
260	}
261	pack $itk_component(zoomin) -side top -padx 2 -pady 2
262	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
263
264	itk_component add zoomout {
265	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
266	-highlightthickness 0 \
267	-image [Rappture::icon zoom-out] \
268	-command [itcl::code $this Zoom out]
269	} {
270	usual
271	ignore -highlightthickness
272	}
273	pack $itk_component(zoomout) -side top -padx 2 -pady 2
274	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
275
276	itk_component add volume {
277	Rappture::PushButton $f.volume \
278	-onimage [Rappture::icon volume-on] \
279	-offimage [Rappture::icon volume-off] \
280	-command [itcl::code $this AdjustSetting volume] \
281	-variable [itcl::scope _settings($this-volume)]
282	}
283	$itk_component(volume) select
284	Rappture::Tooltip::for $itk_component(volume) \
285	"Toggle the volume cloud on/off"
286	pack $itk_component(volume) -padx 2 -pady 2
287
288	if { [catch {
289	BuildViewTab
290	BuildVolumeTab
291	BuildCutplanesTab
292	BuildCameraTab
293	} errs] != 0 } {
294	global errorInfo
295	puts stderr "errs=$errs errorInfo=$errorInfo"
296	}
297
298	# Legend
299
300	set _image(legend) [image create photo]
301	itk_component add legend {
302	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
303	} {
304	usual
305	ignore -highlightthickness
306	rename -background -plotbackground plotBackground Background
307	}
308	bind $itk_component(legend) <Configure> \
309	[itcl::code $this EventuallyResizeLegend]
310
311	# Hack around the Tk panewindow. The problem is that the requested
312	# size of the 3d view isn't set until an image is retrieved from
313	# the server. So the panewindow uses the tiny size.
314	set w 10000
315	pack forget $itk_component(3dview)
316	blt::table $itk_component(plotarea) \
317	0,0 $itk_component(3dview) -fill both -reqwidth $w \
318	1,0 $itk_component(legend) -fill x
319	blt::table configure $itk_component(plotarea) r1 -resize none
320
321	# Bindings for rotation via mouse
322	bind $itk_component(3dview) <ButtonPress-1> \
323	[itcl::code $this Rotate click %x %y]
324	bind $itk_component(3dview) <B1-Motion> \
325	[itcl::code $this Rotate drag %x %y]
326	bind $itk_component(3dview) <ButtonRelease-1> \
327	[itcl::code $this Rotate release %x %y]
328	bind $itk_component(3dview) <Configure> \
329	[itcl::code $this EventuallyResize %w %h]
330
331	# Bindings for panning via mouse
332	bind $itk_component(3dview) <ButtonPress-2> \
333	[itcl::code $this Pan click %x %y]
334	bind $itk_component(3dview) <B2-Motion> \
335	[itcl::code $this Pan drag %x %y]
336	bind $itk_component(3dview) <ButtonRelease-2> \
337	[itcl::code $this Pan release %x %y]
338
339	# Bindings for panning via keyboard
340	bind $itk_component(3dview) <KeyPress-Left> \
341	[itcl::code $this Pan set -10 0]
342	bind $itk_component(3dview) <KeyPress-Right> \
343	[itcl::code $this Pan set 10 0]
344	bind $itk_component(3dview) <KeyPress-Up> \
345	[itcl::code $this Pan set 0 -10]
346	bind $itk_component(3dview) <KeyPress-Down> \
347	[itcl::code $this Pan set 0 10]
348	bind $itk_component(3dview) <Shift-KeyPress-Left> \
349	[itcl::code $this Pan set -2 0]
350	bind $itk_component(3dview) <Shift-KeyPress-Right> \
351	[itcl::code $this Pan set 2 0]
352	bind $itk_component(3dview) <Shift-KeyPress-Up> \
353	[itcl::code $this Pan set 0 -2]
354	bind $itk_component(3dview) <Shift-KeyPress-Down> \
355	[itcl::code $this Pan set 0 2]
356
357	# Bindings for zoom via keyboard
358	bind $itk_component(3dview) <KeyPress-Prior> \
359	[itcl::code $this Zoom out]
360	bind $itk_component(3dview) <KeyPress-Next> \
361	[itcl::code $this Zoom in]
362
363	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
364
365	if {[string equal "x11" [tk windowingsystem]]} {
366	# Bindings for zoom via mouse
367	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
368	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
369	}
370
371	set _image(download) [image create photo]
372
373	eval itk_initialize $args
374
375	Connect
376	}
377
378	# ----------------------------------------------------------------------
379	# DESTRUCTOR
380	# ----------------------------------------------------------------------
381	itcl::body Rappture::NanovisViewer::destructor {} {
382	$_dispatcher cancel !rebuild
383	$_dispatcher cancel !send_transfunc
384	$_dispatcher cancel !resize
385	image delete $_image(plot)
386	image delete $_image(legend)
387	image delete $_image(download)
388	catch { blt::arcball destroy $_arcball }
389	array unset _settings $this-*
390	}
391
392	# ----------------------------------------------------------------------
393	# USAGE: add <dataobj> ?<settings>?
394	#
395	# Clients use this to add a data object to the plot. The optional
396	# <settings> are used to configure the plot. Allowed settings are
397	# -color, -brightness, -width, -linestyle, and -raise.
398	# ----------------------------------------------------------------------
399	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
400	if { ![$dataobj isvalid] } {
401	return; # Object doesn't contain valid data.
402	}
403	array set params {
404	-color auto
405	-width 1
406	-linestyle solid
407	-brightness 0
408	-raise 0
409	-description ""
410	-param ""
411	}
412	array set params $settings
413
414	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
415	# can't handle -autocolors yet
416	set params(-color) black
417	}
418	set pos [lsearch -exact $_dlist $dataobj]
419	if {$pos < 0} {
420	lappend _dlist $dataobj
421	set _allDataObjs($dataobj) 1
422	set _obj2ovride($dataobj-color) $params(-color)
423	set _obj2ovride($dataobj-width) $params(-width)
424	set _obj2ovride($dataobj-raise) $params(-raise)
425	$_dispatcher event -idle !rebuild
426	}
427	}
428
429	# ----------------------------------------------------------------------
430	# USAGE: get ?-objects?
431	# USAGE: get ?-image 3dview\|legend?
432	#
433	# Clients use this to query the list of objects being plotted, in
434	# order from bottom to top of this result. The optional "-image"
435	# flag can also request the internal images being shown.
436	# ----------------------------------------------------------------------
437	itcl::body Rappture::NanovisViewer::get {args} {
438	if {[llength $args] == 0} {
439	set args "-objects"
440	}
441
442	set op [lindex $args 0]
443	switch -- $op {
444	-objects {
445	# put the dataobj list in order according to -raise options
446	set dlist $_dlist
447	foreach obj $dlist {
448	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
449	set i [lsearch -exact $dlist $obj]
450	if {$i >= 0} {
451	set dlist [lreplace $dlist $i $i]
452	lappend dlist $obj
453	}
454	}
455	}
456	return $dlist
457	}
458	-image {
459	if {[llength $args] != 2} {
460	error "wrong # args: should be \"get -image 3dview\|legend\""
461	}
462	switch -- [lindex $args end] {
463	3dview {
464	return $_image(plot)
465	}
466	legend {
467	return $_image(legend)
468	}
469	default {
470	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
471	}
472	}
473	}
474	default {
475	error "bad option \"$op\": should be -objects or -image"
476	}
477	}
478	}
479
480	# ----------------------------------------------------------------------
481	# USAGE: delete ?<dataobj1> <dataobj2> ...?
482	#
483	# Clients use this to delete a dataobj from the plot. If no dataobjs
484	# are specified, then all dataobjs are deleted. No data objects are
485	# deleted. They are only removed from the display list.
486	#
487	# ----------------------------------------------------------------------
488	itcl::body Rappture::NanovisViewer::delete {args} {
489	if {[llength $args] == 0} {
490	set args $_dlist
491	}
492	# Delete all specified dataobjs
493	set changed 0
494	foreach dataobj $args {
495	set pos [lsearch -exact $_dlist $dataobj]
496	if { $pos >= 0 } {
497	set _dlist [lreplace $_dlist $pos $pos]
498	array unset _limits $dataobj*
499	array unset _obj2ovride $dataobj-*
500	set changed 1
501	}
502	}
503	# If anything changed, then rebuild the plot
504	if {$changed} {
505	$_dispatcher event -idle !rebuild
506	}
507	}
508
509	# ----------------------------------------------------------------------
510	# USAGE: scale ?<data1> <data2> ...?
511	#
512	# Sets the default limits for the overall plot according to the
513	# limits of the data for all of the given <data> objects. This
514	# accounts for all objects--even those not showing on the screen.
515	# Because of this, the limits are appropriate for all objects as
516	# the user scans through data in the ResultSet viewer.
517	# ----------------------------------------------------------------------
518	itcl::body Rappture::NanovisViewer::scale {args} {
519	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
520	set _limits($val) ""
521	}
522	foreach dataobj $args {
523	if { ![$dataobj isvalid] } {
524	continue; # Object doesn't contain valid data.
525	}
526	foreach axis {x y z v} {
527	foreach { min max } [$dataobj limits $axis] break
528	if {"" != $min && "" != $max} {
529	if {"" == $_limits(${axis}min)} {
530	set _limits(${axis}min) $min
531	set _limits(${axis}max) $max
532	} else {
533	if {$min < $_limits(${axis}min)} {
534	set _limits(${axis}min) $min
535	}
536	if {$max > $_limits(${axis}max)} {
537	set _limits(${axis}max) $max
538	}
539	}
540	}
541	}
542	}
543	}
544
545	# ----------------------------------------------------------------------
546	# USAGE: download coming
547	# USAGE: download controls <downloadCommand>
548	# USAGE: download now
549	#
550	# Clients use this method to create a downloadable representation
551	# of the plot. Returns a list of the form {ext string}, where
552	# "ext" is the file extension (indicating the type of data) and
553	# "string" is the data itself.
554	# ----------------------------------------------------------------------
555	itcl::body Rappture::NanovisViewer::download {option args} {
556	switch $option {
557	coming {
558	if {[catch {
559	blt::winop snap $itk_component(plotarea) $_image(download)
560	}]} {
561	$_image(download) configure -width 1 -height 1
562	$_image(download) put #000000
563	}
564	}
565	controls {
566	# no controls for this download yet
567	return ""
568	}
569	now {
570	# Get the image data (as base64) and decode it back to binary.
571	# This is better than writing to temporary files. When we switch
572	# to the BLT picture image it won't be necessary to decode the
573	# image data.
574	if { [image width $_image(plot)] > 0 &&
575	[image height $_image(plot)] > 0 } {
576	set bytes [$_image(plot) data -format "jpeg -quality 100"]
577	set bytes [Rappture::encoding::decode -as b64 $bytes]
578	return [list .jpg $bytes]
579	}
580	return ""
581	}
582	default {
583	error "bad option \"$option\": should be coming, controls, now"
584	}
585	}
586	}
587
588	# ----------------------------------------------------------------------
589	# USAGE: Connect ?<host:port>,<host:port>...?
590	#
591	# Clients use this method to establish a connection to a new
592	# server, or to reestablish a connection to the previous server.
593	# Any existing connection is automatically closed.
594	# ----------------------------------------------------------------------
595	itcl::body Rappture::NanovisViewer::Connect {} {
596	set _hosts [GetServerList "nanovis"]
597	if { "" == $_hosts } {
598	return 0
599	}
600	set _reset 1
601	set result [VisViewer::Connect $_hosts]
602	if { $result } {
603	if { $_reportClientInfo } {
604	# Tell the server the viewer, hub, user and session.
605	# Do this immediately on connect before buffing any commands
606	global env
607
608	set info {}
609	set user "???"
610	if { [info exists env(USER)] } {
611	set user $env(USER)
612	}
613	set session "???"
614	if { [info exists env(SESSION)] } {
615	set session $env(SESSION)
616	}
617	lappend info "hub" [exec hostname]
618	lappend info "client" "nanovisviewer"
619	lappend info "user" $user
620	lappend info "session" $session
621	SendCmd "clientinfo [list $info]"
622	}
623
624	set w [winfo width $itk_component(3dview)]
625	set h [winfo height $itk_component(3dview)]
626	EventuallyResize $w $h
627	}
628	return $result
629	}
630
631	#
632	# isconnected --
633	#
634	# Indicates if we are currently connected to the visualization server.
635	#
636	itcl::body Rappture::NanovisViewer::isconnected {} {
637	return [VisViewer::IsConnected]
638	}
639
640	#
641	# disconnect --
642	#
643	itcl::body Rappture::NanovisViewer::disconnect {} {
644	Disconnect
645	}
646
647	#
648	# Disconnect --
649	#
650	# Clients use this method to disconnect from the current rendering
651	# server.
652	#
653	itcl::body Rappture::NanovisViewer::Disconnect {} {
654	VisViewer::Disconnect
655
656	# disconnected -- no more data sitting on server
657	array unset _serverDatasets
658	}
659
660	# ----------------------------------------------------------------------
661	# USAGE: SendTransferFuncs
662	# ----------------------------------------------------------------------
663	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
664	if { $_first == "" } {
665	puts stderr "first not set"
666	return
667	}
668	# Ensure that the global opacity and thickness settings (in the slider
669	# settings widgets) are used for the active transfer-function. Update
670	# the values in the _settings varible.
671	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
672	# Scale values between 0.00001 and 0.01000
673	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
674
675	foreach tag [CurrentDatasets] {
676	if { ![info exists _serverDatasets($tag)] \|\| !$_serverDatasets($tag) } {
677	# The volume hasn't reached the server yet. How did we get
678	# here?
679	puts stderr "Don't have $tag in _serverDatasets"
680	continue
681	}
682	if { ![info exists _dataset2style($tag)] } {
683	puts stderr "don't have style for volume $tag"
684	continue; # How does this happen?
685	}
686	set tf $_dataset2style($tag)
687	set _settings($this-$tf-opacity) $opacity
688	set _settings($this-$tf-thickness) $thickness
689	ComputeTransferFunc $tf
690	# FIXME: Need to the send information as to what transfer functions
691	# to update so that we only update the transfer function
692	# as necessary. Right now, all transfer functions are
693	# updated. This makes moving the isomarker slider chunky.
694	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
695	set _activeTfs($tf) 1
696	}
697	SendCmd "volume shading transfunc $tf $tag"
698	}
699	FixLegend
700	}
701
702	# ----------------------------------------------------------------------
703	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
704	#
705	# Invoked automatically whenever the "image" command comes in from
706	# the rendering server. Indicates that binary image data with the
707	# specified <size> will follow.
708	# ----------------------------------------------------------------------
709	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
710	array set info {
711	-token "???"
712	-bytes 0
713	-type image
714	}
715	array set info $args
716	set bytes [ReceiveBytes $info(-bytes)]
717	ReceiveEcho <<line "<read $info(-bytes) bytes"
718	if { $info(-type) == "image" } {
719	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
720	$_image(plot) configure -data $bytes
721	} elseif { $info(-type) == "print" } {
722	set tag $this-print-$info(-token)
723	set _hardcopy($tag) $bytes
724	}
725	}
726
727	#
728	# ReceiveLegend --
729	#
730	# The procedure is the response from the render server to each "legend"
731	# command. The server sends back a "legend" command invoked our
732	# the slave interpreter. The purpose is to collect data of the image
733	# representing the legend in the canvas. In addition, the isomarkers
734	# of the active transfer function are displayed.
735	#
736	# I don't know is this is the right place to display the isomarkers.
737	# I don't know all the different paths used to draw the plot. There's
738	# "Rebuild", "add", etc.
739	#
740	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
741	if { ![isconnected] } {
742	return
743	}
744	set bytes [ReceiveBytes $size]
745	$_image(legend) configure -data $bytes
746	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
747
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 %.2g $limits(min)]
768	$c coords vmin $lx $ly
769
770	$c itemconfigure vmax -text [format %.2g $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" [$dataobj hints toolname]
910	lappend info "tool_title" [$dataobj hints tooltitle]
911	lappend info "tool_command" [$dataobj hints toolcommand]
912	lappend info "tool_revision" [$dataobj hints toolrevision]
913	lappend info "dataset_label" [$dataobj hints label]
914	lappend info "dataset_size" $nbytes
915	lappend info "dataset_tag" $tag
916	SendCmd "clientinfo [list $info]"
917	}
918	SendCmd "volume data follows $nbytes $tag"
919	append _outbuf $data
920	set _recvdDatasets($tag) 1
921	set _serverDatasets($tag) 0
922	}
923	NameTransferFunc $dataobj $cname
924	}
925	}
926	set _first [lindex [get] 0]
927	if { $_reset } {
928	#
929	# Reset the camera and other view parameters
930	#
931	set _settings($this-qw) $_view(qw)
932	set _settings($this-qx) $_view(qx)
933	set _settings($this-qy) $_view(qy)
934	set _settings($this-qz) $_view(qz)
935	set _settings($this-xpan) $_view(xpan)
936	set _settings($this-ypan) $_view(ypan)
937	set _settings($this-zoom) $_view(zoom)
938
939	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
940	$_arcball quaternion $q
941	SendCmd "camera orient $q"
942	SendCmd "camera reset"
943	PanCamera
944	SendCmd "camera zoom $_view(zoom)"
945	InitSettings light2side light transp isosurface grid axes
946
947	foreach axis {x y z} {
948	# Turn off cutplanes for all volumes
949	SendCmd "cutplane state 0 $axis"
950	}
951	if {"" != $_first} {
952	set axis [$_first hints updir]
953	if { "" != $axis } {
954	SendCmd "up $axis"
955	}
956	set location [$_first hints camera]
957	if { $location != "" } {
958	array set _view $location
959	}
960	}
961	}
962	# Outline seems to need to be reset every update.
963	InitSettings outline
964	# nothing to send -- activate the proper ivol
965	SendCmd "volume state 0"
966	if {"" != $_first} {
967	set datasets [array names _serverDatasets $_first-*]
968	if { $datasets != "" } {
969	SendCmd "volume state 1 $datasets"
970	}
971	# If the first volume already exists on the server, then make sure
972	# we display the proper transfer function in the legend.
973	set cname [lindex [$_first components] 0]
974	if { [info exists _serverDatasets($_first-$cname)] } {
975	updatetransferfuncs
976	}
977	}
978	# Actually write the commands to the server socket. If it fails, we don't
979	# care. We're finished here.
980	blt::busy hold $itk_component(hull)
981	StopBufferingCommands
982	blt::busy release $itk_component(hull)
983	set _reset 0
984	}
985
986	# ----------------------------------------------------------------------
987	# USAGE: CurrentDatasets ?-cutplanes?
988	#
989	# Returns a list of volume server IDs for the current volume being
990	# displayed. This is normally a single ID, but it might be a list
991	# of IDs if the current data object has multiple components.
992	# ----------------------------------------------------------------------
993	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
994	set rlist ""
995	if { $_first == "" } {
996	return
997	}
998	foreach cname [$_first components] {
999	set tag $_first-$cname
1000	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
1001	array set style {
1002	-cutplanes 1
1003	}
1004	array set style [lindex [$_first components -style $cname] 0]
1005	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
1006	lappend rlist $tag
1007	}
1008	}
1009	}
1010	return $rlist
1011	}
1012
1013	# ----------------------------------------------------------------------
1014	# USAGE: Zoom in
1015	# USAGE: Zoom out
1016	# USAGE: Zoom reset
1017	#
1018	# Called automatically when the user clicks on one of the zoom
1019	# controls for this widget. Changes the zoom for the current view.
1020	# ----------------------------------------------------------------------
1021	itcl::body Rappture::NanovisViewer::Zoom {option} {
1022	switch -- $option {
1023	"in" {
1024	set _view(zoom) [expr {$_view(zoom)*1.25}]
1025	set _settings($this-zoom) $_view(zoom)
1026	SendCmd "camera zoom $_view(zoom)"
1027	}
1028	"out" {
1029	set _view(zoom) [expr {$_view(zoom)*0.8}]
1030	set _settings($this-zoom) $_view(zoom)
1031	SendCmd "camera zoom $_view(zoom)"
1032	}
1033	"reset" {
1034	array set _view {
1035	qw 0.853553
1036	qx -0.353553
1037	qy 0.353553
1038	qz 0.146447
1039	zoom 1.0
1040	xpan 0
1041	ypan 0
1042	}
1043	if { $_first != "" } {
1044	set location [$_first hints camera]
1045	if { $location != "" } {
1046	array set _view $location
1047	}
1048	}
1049	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1050	$_arcball quaternion $q
1051	SendCmd "camera orient $q"
1052	SendCmd "camera reset"
1053	set _settings($this-qw) $_view(qw)
1054	set _settings($this-qx) $_view(qx)
1055	set _settings($this-qy) $_view(qy)
1056	set _settings($this-qz) $_view(qz)
1057	set _settings($this-xpan) $_view(xpan)
1058	set _settings($this-ypan) $_view(ypan)
1059	set _settings($this-zoom) $_view(zoom)
1060	}
1061	}
1062	}
1063
1064	itcl::body Rappture::NanovisViewer::PanCamera {} {
1065	#set x [expr ($_view(xpan)) / $_limits(xrange)]
1066	#set y [expr ($_view(ypan)) / $_limits(yrange)]
1067	set x $_view(xpan)
1068	set y $_view(ypan)
1069	SendCmd "camera pan $x $y"
1070	}
1071
1072
1073	# ----------------------------------------------------------------------
1074	# USAGE: Rotate click <x> <y>
1075	# USAGE: Rotate drag <x> <y>
1076	# USAGE: Rotate release <x> <y>
1077	#
1078	# Called automatically when the user clicks/drags/releases in the
1079	# plot area. Moves the plot according to the user's actions.
1080	# ----------------------------------------------------------------------
1081	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1082	switch -- $option {
1083	click {
1084	$itk_component(3dview) configure -cursor fleur
1085	set _click(x) $x
1086	set _click(y) $y
1087	}
1088	drag {
1089	if {[array size _click] == 0} {
1090	Rotate click $x $y
1091	} else {
1092	set w [winfo width $itk_component(3dview)]
1093	set h [winfo height $itk_component(3dview)]
1094	if {$w <= 0 \|\| $h <= 0} {
1095	return
1096	}
1097
1098	if {[catch {
1099	# this fails sometimes for no apparent reason
1100	set dx [expr {double($x-$_click(x))/$w}]
1101	set dy [expr {double($y-$_click(y))/$h}]
1102	}]} {
1103	return
1104	}
1105
1106	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1107	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
1108	set _settings($this-qw) $_view(qw)
1109	set _settings($this-qx) $_view(qx)
1110	set _settings($this-qy) $_view(qy)
1111	set _settings($this-qz) $_view(qz)
1112	SendCmd "camera orient $q"
1113
1114	set _click(x) $x
1115	set _click(y) $y
1116	}
1117	}
1118	release {
1119	Rotate drag $x $y
1120	$itk_component(3dview) configure -cursor ""
1121	catch {unset _click}
1122	}
1123	default {
1124	error "bad option \"$option\": should be click, drag, release"
1125	}
1126	}
1127	}
1128
1129	# ----------------------------------------------------------------------
1130	# USAGE: $this Pan click x y
1131	# $this Pan drag x y
1132	# $this Pan release x y
1133	#
1134	# Called automatically when the user clicks on one of the zoom
1135	# controls for this widget. Changes the zoom for the current view.
1136	# ----------------------------------------------------------------------
1137	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1138	# Experimental stuff
1139	set w [winfo width $itk_component(3dview)]
1140	set h [winfo height $itk_component(3dview)]
1141	if { $option == "set" } {
1142	set x [expr $x / double($w)]
1143	set y [expr $y / double($h)]
1144	set _view(xpan) [expr $_view(xpan) + $x]
1145	set _view(ypan) [expr $_view(ypan) + $y]
1146	PanCamera
1147	set _settings($this-xpan) $_view(xpan)
1148	set _settings($this-ypan) $_view(ypan)
1149	return
1150	}
1151	if { $option == "click" } {
1152	set _click(x) $x
1153	set _click(y) $y
1154	$itk_component(3dview) configure -cursor hand1
1155	}
1156	if { $option == "drag" \|\| $option == "release" } {
1157	set dx [expr ($_click(x) - $x)/double($w)]
1158	set dy [expr ($_click(y) - $y)/double($h)]
1159	set _click(x) $x
1160	set _click(y) $y
1161	set _view(xpan) [expr $_view(xpan) - $dx]
1162	set _view(ypan) [expr $_view(ypan) - $dy]
1163	PanCamera
1164	set _settings($this-xpan) $_view(xpan)
1165	set _settings($this-ypan) $_view(ypan)
1166	}
1167	if { $option == "release" } {
1168	$itk_component(3dview) configure -cursor ""
1169	}
1170	}
1171
1172	# ----------------------------------------------------------------------
1173	# USAGE: InitSettings <what> ?<value>?
1174	#
1175	# Used internally to update rendering settings whenever parameters
1176	# change in the popup settings panel. Sends the new settings off
1177	# to the back end.
1178	# ----------------------------------------------------------------------
1179	itcl::body Rappture::NanovisViewer::InitSettings { args } {
1180	foreach arg $args {
1181	AdjustSetting $arg
1182	}
1183	}
1184
1185	# ----------------------------------------------------------------------
1186	# USAGE: AdjustSetting <what> ?<value>?
1187	#
1188	# Used internally to update rendering settings whenever parameters
1189	# change in the popup settings panel. Sends the new settings off
1190	# to the back end.
1191	# ----------------------------------------------------------------------
1192	itcl::body Rappture::NanovisViewer::AdjustSetting {what {value ""}} {
1193	if {![isconnected]} {
1194	return
1195	}
1196	switch -- $what {
1197	light {
1198	set val $_settings($this-light)
1199	set diffuse [expr {0.01*$val}]
1200	set ambient [expr {1.0-$diffuse}]
1201	set specularLevel 0.3
1202	set specularExp 90.0
1203	SendCmd "volume shading ambient $ambient"
1204	SendCmd "volume shading diffuse $diffuse"
1205	SendCmd "volume shading specularLevel $specularLevel"
1206	SendCmd "volume shading specularExp $specularExp"
1207	}
1208	light2side {
1209	set val $_settings($this-light2side)
1210	SendCmd "volume shading light2side $val"
1211	}
1212	transp {
1213	set val $_settings($this-transp)
1214	set sval [expr { 0.01 * double($val) }]
1215	SendCmd "volume shading opacity $sval"
1216	}
1217	opacity {
1218	set val $_settings($this-opacity)
1219	set sval [expr { 0.01 * double($val) }]
1220	foreach tf [array names _activeTfs] {
1221	set _settings($this-$tf-opacity) $sval
1222	set _activeTfs($tf) 0
1223	}
1224	updatetransferfuncs
1225	}
1226	thickness {
1227	if { [array names _activeTfs] > 0 } {
1228	set val $_settings($this-thickness)
1229	# Scale values between 0.00001 and 0.01000
1230	set sval [expr {0.0001*double($val)}]
1231	foreach tf [array names _activeTfs] {
1232	set _settings($this-$tf-thickness) $sval
1233	set _activeTfs($tf) 0
1234	}
1235	updatetransferfuncs
1236	}
1237	}
1238	"outline" {
1239	SendCmd "volume outline state $_settings($this-outline)"
1240	}
1241	"isosurface" {
1242	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1243	}
1244	"colormap" {
1245	set color [$itk_component(colormap) value]
1246	set _settings(colormap) $color
1247	# Only set the colormap on the first volume. Ignore the others.
1248	#ResetColormap $color
1249	}
1250	"grid" {
1251	SendCmd "grid visible $_settings($this-grid)"
1252	}
1253	"axes" {
1254	SendCmd "axis visible $_settings($this-axes)"
1255	}
1256	"legend" {
1257	if { $_settings($this-legend) } {
1258	blt::table $itk_component(plotarea) \
1259	0,0 $itk_component(3dview) -fill both \
1260	1,0 $itk_component(legend) -fill x
1261	blt::table configure $itk_component(plotarea) r1 -resize none
1262	} else {
1263	blt::table forget $itk_component(legend)
1264	}
1265	}
1266	"volume" {
1267	set datasets [CurrentDatasets -cutplanes]
1268	SendCmd "volume data state $_settings($this-volume) $datasets"
1269	}
1270	"xcutplane" - "ycutplane" - "zcutplane" {
1271	set axis [string range $what 0 0]
1272	set bool $_settings($this-$what)
1273	set datasets [CurrentDatasets -cutplanes]
1274	set tag [lindex $datasets 0]
1275	SendCmd "cutplane state $bool $axis $tag"
1276	if { $bool } {
1277	$itk_component(${axis}CutScale) configure -state normal \
1278	-troughcolor white
1279	} else {
1280	$itk_component(${axis}CutScale) configure -state disabled \
1281	-troughcolor grey82
1282	}
1283	}
1284	default {
1285	error "don't know how to fix $what"
1286	}
1287	}
1288	}
1289
1290	# ----------------------------------------------------------------------
1291	# USAGE: FixLegend
1292	#
1293	# Used internally to update the legend area whenever it changes size
1294	# or when the field changes. Asks the server to send a new legend
1295	# for the current field.
1296	# ----------------------------------------------------------------------
1297	itcl::body Rappture::NanovisViewer::FixLegend {} {
1298	set _resizeLegendPending 0
1299	set lineht [font metrics $itk_option(-font) -linespace]
1300	set w [expr {$_width-20}]
1301	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1302	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1303	set tag [lindex [CurrentDatasets] 0]
1304	if { [info exists _dataset2style($tag)] } {
1305	SendCmd "legend $_dataset2style($tag) $w $h"
1306	}
1307	} else {
1308	# Can't do this as this will remove the items associated with the
1309	# isomarkers.
1310
1311	#$itk_component(legend) delete all
1312	}
1313	}
1314
1315	#
1316	# NameTransferFunc --
1317	#
1318	# Creates a transfer function name based on the <style> settings in the
1319	# library run.xml file. This placeholder will be used later to create
1320	# and send the actual transfer function once the data info has been sent
1321	# to us by the render server. [We won't know the volume limits until the
1322	# server parses the 3D data and sends back the limits via ReceiveData.]
1323	#
1324	# FIXME: The current way we generate transfer-function names completely
1325	# ignores the -markers option. The problem is that we are forced
1326	# to compute the name from an increasing complex set of values:
1327	# color, levels, marker, opacity. I think we're stuck doing it
1328	# now.
1329	#
1330	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj cname } {
1331	array set style {
1332	-color BCGYR
1333	-levels 6
1334	-opacity 1.0
1335	-markers ""
1336	}
1337	set tag $dataobj-$cname
1338	array set style [lindex [$dataobj components -style $cname] 0]
1339	set tf "$style(-color):$style(-levels):$style(-opacity)"
1340	set _dataset2style($tag) $tf
1341	lappend _style2datasets($tf) $tag
1342	return $tf
1343	}
1344
1345	#
1346	# ComputeTransferFunc --
1347	#
1348	# Computes and sends the transfer function to the render server. It's
1349	# assumed that the volume data limits are known and that the global
1350	# transfer-functions slider values have been set up. Both parts are
1351	# needed to compute the relative value (location) of the marker, and
1352	# the alpha map of the transfer function.
1353	#
1354	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1355	array set style {
1356	-color BCGYR
1357	-levels 6
1358	-opacity 1.0
1359	-markers ""
1360	}
1361
1362	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1363	array set style [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 style(-markers)] &&
1381	[llength $style(-markers)] > 0 } {
1382	ParseMarkersOption $tf $style(-markers)
1383	} else {
1384	ParseLevelsOption $tf $style(-levels)
1385	}
1386	}
1387	set cmap [ColorsToColormap $style(-color)]
1388	set tag $this-$tf
1389	if { ![info exists _settings($tag-opacity)] } {
1390	set _settings($tag-opacity) $style(-opacity)
1391	}
1392	set max 1.0 ;#$_settings($tag-opacity)
1393
1394	set isovalues {}
1395	foreach m $_isomarkers($tf) {
1396	lappend isovalues [$m relval]
1397	}
1398	# Sort the isovalues
1399	set isovalues [lsort -real $isovalues]
1400
1401	if { ![info exists _settings($tag-thickness)]} {
1402	set _settings($tag-thickness) 0.005
1403	}
1404	set delta $_settings($tag-thickness)
1405
1406	set first [lindex $isovalues 0]
1407	set last [lindex $isovalues end]
1408	set wmap ""
1409	if { $first == "" \|\| $first != 0.0 } {
1410	lappend wmap 0.0 0.0
1411	}
1412	foreach x $isovalues {
1413	set x1 [expr {$x-$delta-0.00001}]
1414	set x2 [expr {$x-$delta}]
1415	set x3 [expr {$x+$delta}]
1416	set x4 [expr {$x+$delta+0.00001}]
1417	if { $x1 < 0.0 } {
1418	set x1 0.0
1419	} elseif { $x1 > 1.0 } {
1420	set x1 1.0
1421	}
1422	if { $x2 < 0.0 } {
1423	set x2 0.0
1424	} elseif { $x2 > 1.0 } {
1425	set x2 1.0
1426	}
1427	if { $x3 < 0.0 } {
1428	set x3 0.0
1429	} elseif { $x3 > 1.0 } {
1430	set x3 1.0
1431	}
1432	if { $x4 < 0.0 } {
1433	set x4 0.0
1434	} elseif { $x4 > 1.0 } {
1435	set x4 1.0
1436	}
1437	# add spikes in the middle
1438	lappend wmap $x1 0.0
1439	lappend wmap $x2 $max
1440	lappend wmap $x3 $max
1441	lappend wmap $x4 0.0
1442	}
1443	if { $last == "" \|\| $last != 1.0 } {
1444	lappend wmap 1.0 0.0
1445	}
1446	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1447	}
1448
1449	# ----------------------------------------------------------------------
1450	# CONFIGURATION OPTION: -plotbackground
1451	# ----------------------------------------------------------------------
1452	itcl::configbody Rappture::NanovisViewer::plotbackground {
1453	if { [isconnected] } {
1454	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1455	#fix this!
1456	#SendCmd "color background $r $g $b"
1457	}
1458	}
1459
1460	# ----------------------------------------------------------------------
1461	# CONFIGURATION OPTION: -plotforeground
1462	# ----------------------------------------------------------------------
1463	itcl::configbody Rappture::NanovisViewer::plotforeground {
1464	if { [isconnected] } {
1465	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1466	#fix this!
1467	#SendCmd "color background $r $g $b"
1468	}
1469	}
1470
1471	# ----------------------------------------------------------------------
1472	# CONFIGURATION OPTION: -plotoutline
1473	# ----------------------------------------------------------------------
1474	itcl::configbody Rappture::NanovisViewer::plotoutline {
1475	# Must check if we are connected because this routine is called from the
1476	# class body when the -plotoutline itk_option is defined. At that point
1477	# the NanovisViewer class constructor hasn't been called, so we can't
1478	# start sending commands to visualization server.
1479	if { [isconnected] } {
1480	if {"" == $itk_option(-plotoutline)} {
1481	SendCmd "volume outline state off"
1482	} else {
1483	SendCmd "volume outline state on"
1484	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1485	}
1486	}
1487	}
1488
1489	#
1490	# The -levels option takes a single value that represents the number
1491	# of evenly distributed markers based on the current data range. Each
1492	# marker is a relative value from 0.0 to 1.0.
1493	#
1494	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1495	set c $itk_component(legend)
1496	regsub -all "," $levels " " levels
1497	if {[string is int $levels]} {
1498	for {set i 1} { $i <= $levels } {incr i} {
1499	set x [expr {double($i)/($levels+1)}]
1500	set m [Rappture::IsoMarker \#auto $c $this $tf]
1501	$m relval $x
1502	lappend _isomarkers($tf) $m
1503	}
1504	} else {
1505	foreach x $levels {
1506	set m [Rappture::IsoMarker \#auto $c $this $tf]
1507	$m relval $x
1508	lappend _isomarkers($tf) $m
1509	}
1510	}
1511	}
1512
1513	#
1514	# The -markers option takes a list of zero or more values (the values
1515	# may be separated either by spaces or commas) that have the following
1516	# format:
1517	#
1518	# N% Percent of current total data range. Converted to
1519	# to a relative value between 0.0 and 1.0.
1520	# N Absolute value of marker. If the marker is outside of
1521	# the current range, it will be displayed on the outer
1522	# edge of the legends, but it range it represents will
1523	# not be seen.
1524	#
1525	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1526	set c $itk_component(legend)
1527	regsub -all "," $markers " " markers
1528	foreach marker $markers {
1529	set n [scan $marker "%g%s" value suffix]
1530	if { $n == 2 && $suffix == "%" } {
1531	# ${n}% : Set relative value.
1532	set value [expr {$value * 0.01}]
1533	set m [Rappture::IsoMarker \#auto $c $this $tf]
1534	$m relval $value
1535	lappend _isomarkers($tf) $m
1536	} else {
1537	# ${n} : Set absolute value.
1538	set m [Rappture::IsoMarker \#auto $c $this $tf]
1539	$m absval $value
1540	lappend _isomarkers($tf) $m
1541	}
1542	}
1543	}
1544
1545	# ----------------------------------------------------------------------
1546	# USAGE: UndateTransferFuncs
1547	# ----------------------------------------------------------------------
1548	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1549	$_dispatcher event -idle !send_transfunc
1550	}
1551
1552	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1553	if { $_first == "" } {
1554	error "active transfer function isn't set"
1555	}
1556	set tag [lindex [CurrentDatasets] 0]
1557	set tf $_dataset2style($tag)
1558	set c $itk_component(legend)
1559	set m [Rappture::IsoMarker \#auto $c $this $tf]
1560	set w [winfo width $c]
1561	$m relval [expr {double($x-10)/($w-20)}]
1562	lappend _isomarkers($tf) $m
1563	updatetransferfuncs
1564	return 1
1565	}
1566
1567	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1568	set tf [$marker transferfunc]
1569	set bool 0
1570	if { [info exists _isomarkers($tf)] } {
1571	set list {}
1572	set marker [namespace tail $marker]
1573	foreach m $_isomarkers($tf) {
1574	set sx [$m screenpos]
1575	if { $m != $marker } {
1576	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1577	$marker relval [$m relval]
1578	itcl::delete object $m
1579	bell
1580	set bool 1
1581	continue
1582	}
1583	}
1584	lappend list $m
1585	}
1586	set _isomarkers($tf) $list
1587	updatetransferfuncs
1588	}
1589	return $bool
1590	}
1591
1592	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1593	set tf [$marker transferfunc]
1594	if { [info exists _isomarkers($tf)] } {
1595	set marker [namespace tail $marker]
1596	foreach m $_isomarkers($tf) {
1597	set sx [$m screenpos]
1598	if { $m != $marker } {
1599	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1600	$m activate $bool
1601	}
1602	}
1603	}
1604	return ""
1605	}
1606
1607	itcl::body Rappture::NanovisViewer::limits { tf } {
1608	set _limits(min) 0.0
1609	set _limits(max) 1.0
1610	if { ![info exists _style2datasets($tf)] } {
1611	return [array get _limits]
1612	}
1613	set min ""; set max ""
1614	foreach tag $_style2datasets($tf) {
1615	if { ![info exists _serverDatasets($tag)] } {
1616	continue
1617	}
1618	if { ![info exists _limits($tag-min)] } {
1619	continue
1620	}
1621	if { $min == "" \|\| $min > $_limits($tag-min) } {
1622	set min $_limits($tag-min)
1623	}
1624	if { $max == "" \|\| $max < $_limits($tag-max) } {
1625	set max $_limits($tag-max)
1626	}
1627	}
1628	if { $min != "" } {
1629	set _limits(min) $min
1630	}
1631	if { $max != "" } {
1632	set _limits(max) $max
1633	}
1634	return [array get _limits]
1635	}
1636
1637
1638	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1639	foreach { key value } {
1640	grid 0
1641	axes 1
1642	outline 0
1643	volume 1
1644	legend 1
1645	particles 1
1646	lic 1
1647	} {
1648	set _settings($this-$key) $value
1649	}
1650
1651	set fg [option get $itk_component(hull) font Font]
1652	#set bfg [option get $itk_component(hull) boldFont Font]
1653
1654	set inner [$itk_component(main) insert end \
1655	-title "View Settings" \
1656	-icon [Rappture::icon wrench]]
1657	$inner configure -borderwidth 4
1658
1659	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1660	checkbutton $inner.isosurface \
1661	-text "Isosurface shading" \
1662	-variable [itcl::scope _settings($this-isosurface)] \
1663	-command [itcl::code $this AdjustSetting isosurface] \
1664	-font "Arial 9"
1665
1666	checkbutton $inner.axes \
1667	-text "Axes" \
1668	-variable [itcl::scope _settings($this-axes)] \
1669	-command [itcl::code $this AdjustSetting axes] \
1670	-font "Arial 9"
1671
1672	checkbutton $inner.grid \
1673	-text "Grid" \
1674	-variable [itcl::scope _settings($this-grid)] \
1675	-command [itcl::code $this AdjustSetting grid] \
1676	-font "Arial 9"
1677
1678	checkbutton $inner.outline \
1679	-text "Outline" \
1680	-variable [itcl::scope _settings($this-outline)] \
1681	-command [itcl::code $this AdjustSetting outline] \
1682	-font "Arial 9"
1683
1684	checkbutton $inner.legend \
1685	-text "Legend" \
1686	-variable [itcl::scope _settings($this-legend)] \
1687	-command [itcl::code $this AdjustSetting legend] \
1688	-font "Arial 9"
1689
1690	checkbutton $inner.volume \
1691	-text "Volume" \
1692	-variable [itcl::scope _settings($this-volume)] \
1693	-command [itcl::code $this AdjustSetting volume] \
1694	-font "Arial 9"
1695
1696	blt::table $inner \
1697	0,0 $inner.axes -cspan 2 -anchor w \
1698	1,0 $inner.grid -cspan 2 -anchor w \
1699	2,0 $inner.outline -cspan 2 -anchor w \
1700	3,0 $inner.volume -cspan 2 -anchor w \
1701	4,0 $inner.legend -cspan 2 -anchor w
1702
1703	if 0 {
1704	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1705	}
1706	blt::table configure $inner r* -resize none
1707	blt::table configure $inner r5 -resize expand
1708	}
1709
1710	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1711	foreach { key value } {
1712	light2side 1
1713	light 40
1714	transp 50
1715	opacity 100
1716	thickness 350
1717	} {
1718	set _settings($this-$key) $value
1719	}
1720
1721	set inner [$itk_component(main) insert end \
1722	-title "Volume Settings" \
1723	-icon [Rappture::icon volume-on]]
1724	$inner configure -borderwidth 4
1725
1726	set fg [option get $itk_component(hull) font Font]
1727	#set bfg [option get $itk_component(hull) boldFont Font]
1728
1729	checkbutton $inner.vol -text "Show volume" -font $fg \
1730	-variable [itcl::scope _settings($this-volume)] \
1731	-command [itcl::code $this AdjustSetting volume]
1732	label $inner.shading -text "Shading:" -font $fg
1733
1734	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1735	-variable [itcl::scope _settings($this-light2side)] \
1736	-command [itcl::code $this AdjustSetting light2side]
1737
1738	label $inner.dim -text "Glow" -font $fg
1739	::scale $inner.light -from 0 -to 100 -orient horizontal \
1740	-variable [itcl::scope _settings($this-light)] \
1741	-width 10 \
1742	-showvalue off -command [itcl::code $this AdjustSetting light]
1743	label $inner.bright -text "Surface" -font $fg
1744
1745	label $inner.fog -text "Clear" -font $fg
1746	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1747	-variable [itcl::scope _settings($this-transp)] \
1748	-width 10 \
1749	-showvalue off -command [itcl::code $this AdjustSetting transp]
1750	label $inner.plastic -text "Opaque" -font $fg
1751
1752	label $inner.clear -text "Clear" -font $fg
1753	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1754	-variable [itcl::scope _settings($this-opacity)] \
1755	-width 10 \
1756	-showvalue off -command [itcl::code $this AdjustSetting opacity]
1757	label $inner.opaque -text "Opaque" -font $fg
1758
1759	label $inner.thin -text "Thin" -font $fg
1760	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1761	-variable [itcl::scope _settings($this-thickness)] \
1762	-width 10 \
1763	-showvalue off -command [itcl::code $this AdjustSetting thickness]
1764	label $inner.thick -text "Thick" -font $fg
1765
1766	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1767	itk_component add colormap {
1768	Rappture::Combobox $inner.colormap -width 10 -editable no
1769	}
1770
1771	$inner.colormap choices insert end \
1772	"BCGYR" "BCGYR" \
1773	"BGYOR" "BGYOR" \
1774	"blue" "blue" \
1775	"blue-to-brown" "blue-to-brown" \
1776	"blue-to-orange" "blue-to-orange" \
1777	"blue-to-grey" "blue-to-grey" \
1778	"green-to-magenta" "green-to-magenta" \
1779	"greyscale" "greyscale" \
1780	"nanohub" "nanohub" \
1781	"rainbow" "rainbow" \
1782	"spectral" "spectral" \
1783	"ROYGB" "ROYGB" \
1784	"RYGCB" "RYGCB" \
1785	"brown-to-blue" "brown-to-blue" \
1786	"grey-to-blue" "grey-to-blue" \
1787	"orange-to-blue" "orange-to-blue" \
1788	"none" "none"
1789
1790	$itk_component(colormap) value "BCGYR"
1791	bind $inner.colormap <<Value>> \
1792	[itcl::code $this AdjustSetting colormap]
1793
1794	blt::table $inner \
1795	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1796	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1797	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1798	3,0 $inner.dim -anchor e -pady 2 \
1799	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1800	3,3 $inner.bright -anchor w -pady 2 \
1801	4,0 $inner.fog -anchor e -pady 2 \
1802	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
1803	4,3 $inner.plastic -anchor w -pady 2 \
1804	5,0 $inner.thin -anchor e -pady 2 \
1805	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1806	5,3 $inner.thick -anchor w -pady 2
1807
1808	blt::table configure $inner c0 c1 c3 r* -resize none
1809	blt::table configure $inner r6 -resize expand
1810	}
1811
1812	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1813	set inner [$itk_component(main) insert end \
1814	-title "Cutplane Settings" \
1815	-icon [Rappture::icon cutbutton]]
1816	$inner configure -borderwidth 4
1817
1818	# X-value slicer...
1819	itk_component add xCutButton {
1820	Rappture::PushButton $inner.xbutton \
1821	-onimage [Rappture::icon x-cutplane] \
1822	-offimage [Rappture::icon x-cutplane] \
1823	-command [itcl::code $this AdjustSetting xcutplane] \
1824	-variable [itcl::scope _settings($this-xcutplane)]
1825	}
1826	Rappture::Tooltip::for $itk_component(xCutButton) \
1827	"Toggle the X cut plane on/off"
1828
1829	itk_component add xCutScale {
1830	::scale $inner.xval -from 100 -to 0 \
1831	-width 10 -orient vertical -showvalue off \
1832	-borderwidth 1 -highlightthickness 0 \
1833	-command [itcl::code $this Slice move x] \
1834	-variable [itcl::scope _settings($this-xcutposition)]
1835	} {
1836	usual
1837	ignore -borderwidth -highlightthickness
1838	}
1839	# Set the default cutplane value before disabling the scale.
1840	$itk_component(xCutScale) set 50
1841	$itk_component(xCutScale) configure -state disabled
1842	Rappture::Tooltip::for $itk_component(xCutScale) \
1843	"@[itcl::code $this SlicerTip x]"
1844
1845	# Y-value slicer...
1846	itk_component add yCutButton {
1847	Rappture::PushButton $inner.ybutton \
1848	-onimage [Rappture::icon y-cutplane] \
1849	-offimage [Rappture::icon y-cutplane] \
1850	-command [itcl::code $this AdjustSetting ycutplane] \
1851	-variable [itcl::scope _settings($this-ycutplane)]
1852	}
1853	Rappture::Tooltip::for $itk_component(yCutButton) \
1854	"Toggle the Y cut plane on/off"
1855
1856	itk_component add yCutScale {
1857	::scale $inner.yval -from 100 -to 0 \
1858	-width 10 -orient vertical -showvalue off \
1859	-borderwidth 1 -highlightthickness 0 \
1860	-command [itcl::code $this Slice move y] \
1861	-variable [itcl::scope _settings($this-ycutposition)]
1862	} {
1863	usual
1864	ignore -borderwidth -highlightthickness
1865	}
1866	Rappture::Tooltip::for $itk_component(yCutScale) \
1867	"@[itcl::code $this SlicerTip y]"
1868	# Set the default cutplane value before disabling the scale.
1869	$itk_component(yCutScale) set 50
1870	$itk_component(yCutScale) configure -state disabled
1871
1872	# Z-value slicer...
1873	itk_component add zCutButton {
1874	Rappture::PushButton $inner.zbutton \
1875	-onimage [Rappture::icon z-cutplane] \
1876	-offimage [Rappture::icon z-cutplane] \
1877	-command [itcl::code $this AdjustSetting zcutplane] \
1878	-variable [itcl::scope _settings($this-zcutplane)]
1879	}
1880	Rappture::Tooltip::for $itk_component(zCutButton) \
1881	"Toggle the Z cut plane on/off"
1882
1883	itk_component add zCutScale {
1884	::scale $inner.zval -from 100 -to 0 \
1885	-width 10 -orient vertical -showvalue off \
1886	-borderwidth 1 -highlightthickness 0 \
1887	-command [itcl::code $this Slice move z] \
1888	-variable [itcl::scope _settings($this-zcutposition)]
1889	} {
1890	usual
1891	ignore -borderwidth -highlightthickness
1892	}
1893	$itk_component(zCutScale) set 50
1894	$itk_component(zCutScale) configure -state disabled
1895	#$itk_component(zCutScale) configure -state disabled
1896	Rappture::Tooltip::for $itk_component(zCutScale) \
1897	"@[itcl::code $this SlicerTip z]"
1898
1899	blt::table $inner \
1900	1,1 $itk_component(xCutButton) \
1901	1,2 $itk_component(yCutButton) \
1902	1,3 $itk_component(zCutButton) \
1903	0,1 $itk_component(xCutScale) \
1904	0,2 $itk_component(yCutScale) \
1905	0,3 $itk_component(zCutScale)
1906
1907	blt::table configure $inner r0 r1 c* -resize none
1908	blt::table configure $inner r2 c4 -resize expand
1909	blt::table configure $inner c0 -width 2
1910	blt::table configure $inner c1 c2 c3 -padx 2
1911	}
1912
1913	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1914	set inner [$itk_component(main) insert end \
1915	-title "Camera Settings" \
1916	-icon [Rappture::icon camera]]
1917	$inner configure -borderwidth 4
1918
1919	label $inner.view_l -text "view" -font "Arial 9"
1920	set f [frame $inner.view]
1921	foreach side { front back left right top bottom } {
1922	button $f.$side -image [Rappture::icon view$side] \
1923	-command [itcl::code $this SetOrientation $side]
1924	Rappture::Tooltip::for $f.$side "Change the view to $side"
1925	pack $f.$side -side left
1926	}
1927
1928	blt::table $inner \
1929	0,0 $inner.view_l -anchor e -pady 2 \
1930	0,1 $inner.view -anchor w -pady 2
1931
1932	set row 1
1933	set labels { qw qx qy qz xpan ypan zoom }
1934	foreach tag $labels {
1935	label $inner.${tag}label -text $tag -font "Arial 9"
1936	entry $inner.${tag} -font "Arial 9" -bg white \
1937	-textvariable [itcl::scope _settings($this-$tag)]
1938	bind $inner.${tag} <Return> \
1939	[itcl::code $this camera set ${tag}]
1940	bind $inner.${tag} <KP_Enter> \
1941	[itcl::code $this camera set ${tag}]
1942	blt::table $inner \
1943	$row,0 $inner.${tag}label -anchor e -pady 2 \
1944	$row,1 $inner.${tag} -anchor w -pady 2
1945	blt::table configure $inner r$row -resize none
1946	incr row
1947	}
1948
1949	blt::table configure $inner c* r* -resize none
1950	blt::table configure $inner c2 -resize expand
1951	blt::table configure $inner r$row -resize expand
1952	}
1953
1954	# ----------------------------------------------------------------------
1955	# USAGE: Slice move x\|y\|z <newval>
1956	#
1957	# Called automatically when the user drags the slider to move the
1958	# cut plane that slices 3D data. Gets the current value from the
1959	# slider and moves the cut plane to the appropriate point in the
1960	# data set.
1961	# ----------------------------------------------------------------------
1962	itcl::body Rappture::NanovisViewer::Slice {option args} {
1963	switch -- $option {
1964	move {
1965	if {[llength $args] != 2} {
1966	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1967	}
1968	set axis [lindex $args 0]
1969	set newval [lindex $args 1]
1970
1971	set newpos [expr {0.01*$newval}]
1972	set datasets [CurrentDatasets -cutplanes]
1973	set tag [lindex $datasets 0]
1974	SendCmd "cutplane position $newpos $axis $tag"
1975	}
1976	default {
1977	error "bad option \"$option\": should be axis, move, or volume"
1978	}
1979	}
1980	}
1981
1982	# ----------------------------------------------------------------------
1983	# USAGE: SlicerTip <axis>
1984	#
1985	# Used internally to generate a tooltip for the x/y/z slicer controls.
1986	# Returns a message that includes the current slicer value.
1987	# ----------------------------------------------------------------------
1988	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1989	set val [$itk_component(${axis}CutScale) get]
1990	# set val [expr {0.01*($val-50)
1991	# *($_limits(${axis}max)-$_limits(${axis}min))
1992	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
1993	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
1994	}
1995
1996
1997	itcl::body Rappture::NanovisViewer::DoResize {} {
1998	$_arcball resize $_width $_height
1999	SendCmd "screen size $_width $_height"
2000	set _resizePending 0
2001	}
2002
2003	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
2004	set _width $w
2005	set _height $h
2006	$_arcball resize $w $h
2007	if { !$_resizePending } {
2008	$_dispatcher event -idle !resize
2009	set _resizePending 1
2010	}
2011	}
2012
2013	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
2014	if { !$_resizeLegendPending } {
2015	$_dispatcher event -idle !legend
2016	set _resizeLegendPending 1
2017	}
2018	}
2019
2020	# camera --
2021	#
2022	itcl::body Rappture::NanovisViewer::camera {option args} {
2023	switch -- $option {
2024	"show" {
2025	puts [array get _view]
2026	}
2027	"set" {
2028	set who [lindex $args 0]
2029	set x $_settings($this-$who)
2030	set code [catch { string is double $x } result]
2031	if { $code != 0 \|\| !$result } {
2032	set _settings($this-$who) $_view($who)
2033	return
2034	}
2035	switch -- $who {
2036	"xpan" - "ypan" {
2037	set _view($who) $_settings($this-$who)
2038	PanCamera
2039	}
2040	"qx" - "qy" - "qz" - "qw" {
2041	set _view($who) $_settings($this-$who)
2042	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2043	$_arcball quaternion $q
2044	SendCmd "camera orient $q"
2045	}
2046	"zoom" {
2047	set _view($who) $_settings($this-$who)
2048	SendCmd "camera zoom $_view(zoom)"
2049	}
2050	}
2051	}
2052	}
2053	}
2054
2055	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2056	set flowobj ""
2057	foreach key [array names _obj2flow] {
2058	set flowobj $_obj2flow($key)
2059	break
2060	}
2061	if { $flowobj == "" } {
2062	return
2063	}
2064	if { [winfo exists $w.frame] } {
2065	destroy $w.frame
2066	}
2067	set inner [frame $w.frame]
2068	blt::table $w \
2069	5,0 $inner -fill both -cspan 2 -anchor nw
2070	array set hints [$dataobj hints]
2071
2072	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2073	blt::table $inner \
2074	1,0 $inner.volumes -anchor w \
2075	blt::table configure $inner c0 c1 -resize none
2076	blt::table configure $inner c2 -resize expand
2077
2078	set row 3
2079	set volumes [get]
2080	if { [llength $volumes] > 0 } {
2081	blt::table $inner $row,0 $inner.volumes -anchor w
2082	incr row
2083	}
2084	foreach vol $volumes {
2085	array unset info
2086	array set info $vol
2087	set name $info(name)
2088	if { ![info exists _settings($this-volume-$name)] } {
2089	set _settings($this-volume-$name) $info(hide)
2090	}
2091	checkbutton $inner.vol$row -text $info(label) \
2092	-variable [itcl::scope _settings($this-volume-$name)] \
2093	-onvalue 0 -offvalue 1 \
2094	-command [itcl::code $this volume $key $name] \
2095	-font "Arial 9"
2096	Rappture::Tooltip::for $inner.vol$row $info(description)
2097	blt::table $inner $row,0 $inner.vol$row -anchor w
2098	if { !$_settings($this-volume-$name) } {
2099	$inner.vol$row select
2100	}
2101	incr row
2102	}
2103	blt::table configure $inner r* -resize none
2104	blt::table configure $inner r$row -resize expand
2105	blt::table configure $inner c3 -resize expand
2106	event generate [winfo parent [winfo parent $w]] <Configure>
2107	}
2108
2109	itcl::body Rappture::NanovisViewer::volume { tag name } {
2110	set bool $_settings($this-volume-$name)
2111	SendCmd "volume statue $bool $name"
2112	}
2113
2114	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2115	array set positions {
2116	front "1 0 0 0"
2117	back "0 0 1 0"
2118	left "0.707107 0 -0.707107 0"
2119	right "0.707107 0 0.707107 0"
2120	top "0.707107 -0.707107 0 0"
2121	bottom "0.707107 0.707107 0 0"
2122	}
2123	foreach name { qw qx qy qz } value $positions($side) {
2124	set _view($name) $value
2125	}
2126	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2127	$_arcball quaternion $q
2128	SendCmd "camera orient $q"
2129	SendCmd "camera reset"
2130	set _view(xpan) 0
2131	set _view(ypan) 0
2132	set _view(zoom) 1.0
2133	set _settings($this-xpan) $_view(xpan)
2134	set _settings($this-ypan) $_view(ypan)
2135	set _settings($this-zoom) $_view(zoom)
2136	}
2137

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