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source: branches/blt4/gui/scripts/nanovisviewer.tcl @ 2048

Last change on this file since 2048 was 2048, checked in by gah, 14 years ago
tool.xml
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1
2	# ----------------------------------------------------------------------
3	# COMPONENT: nanovisviewer - 3D volume rendering
4	#
5	# This widget performs volume rendering on 3D scalar/vector datasets.
6	# It connects to the Nanovis server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2005 Purdue Research Foundation
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	#package require Img
18
19	#
20	# FIXME:
21	# Need to Add DX readers this client to examine the data before
22	# it's sent to the server. This will eliminate 90% of the insanity in
23	# computing the limits of all the volumes. I can rip out all the
24	# "receive data" "send transfer function" event crap.
25	#
26	# This means we can compute the transfer function (relative values) and
27	# draw the legend min/max values without waiting for the information to
28	# come from the server. This will also prevent the flashing that occurs
29	# when a new volume is drawn (using the default transfer function) and
30	# then when the correct transfer function has been sent and linked to
31	# the volume.
32	#
33	option add *NanovisViewer.width 4i widgetDefault
34	option add NanovisViewercursor crosshair widgetDefault
35	option add *NanovisViewer.height 4i widgetDefault
36	option add *NanovisViewer.foreground black widgetDefault
37	option add *NanovisViewer.controlBackground gray widgetDefault
38	option add *NanovisViewer.controlDarkBackground #999999 widgetDefault
39	option add *NanovisViewer.plotBackground black widgetDefault
40	option add *NanovisViewer.plotForeground white widgetDefault
41	option add *NanovisViewer.plotOutline gray widgetDefault
42	option add *NanovisViewer.font \
43	--helvetica-medium-r-normal--12-* widgetDefault
44
45	# must use this name -- plugs into Rappture::resources::load
46	proc NanovisViewer_init_resources {} {
47	Rappture::resources::register \
48	nanovis_server Rappture::NanovisViewer::SetServerList
49	}
50
51	itcl::class Rappture::NanovisViewer {
52	inherit Rappture::VisViewer
53
54	itk_option define -plotforeground plotForeground Foreground ""
55	itk_option define -plotbackground plotBackground Background ""
56	itk_option define -plotoutline plotOutline PlotOutline ""
57
58	constructor { hostlist args } {
59	Rappture::VisViewer::constructor $hostlist
60	} {
61	# defined below
62	}
63	destructor {
64	# defined below
65	}
66	public proc SetServerList { namelist } {
67	Rappture::VisViewer::SetServerList "nanovis" $namelist
68	}
69	public method add {dataobj {settings ""}}
70	public method camera {option args}
71	public method delete {args}
72	public method disconnect {}
73	public method download {option args}
74	public method get {args}
75	public method isconnected {}
76	public method limits { tf }
77	public method overmarker { m x }
78	public method sendto { string }
79	public method parameters {title args} {
80	# do nothing
81	}
82	public method rmdupmarker { m x }
83	public method scale {args}
84	public method snap { w h }
85	public method updatetransferfuncs {}
86
87	protected method Connect {}
88	protected method CurrentVolumes {{what -all}}
89	protected method Disconnect {}
90	protected method DoResize {}
91	protected method FixLegend {}
92	protected method FixSettings {what {value ""}}
93	protected method Pan {option x y}
94	protected method Rebuild {}
95	protected method ReceiveData { args }
96	protected method ReceiveImage { args }
97	protected method ReceiveLegend { tf vmin vmax size }
98	protected method Rotate {option x y}
99	protected method SendCmd {string}
100	protected method SendTransferFuncs {}
101	protected method Slice {option args}
102	protected method SlicerTip {axis}
103	protected method Zoom {option}
104
105	# The following methods are only used by this class.
106	private method AddIsoMarker { x y }
107	private method BuildCameraTab {}
108	private method BuildCutplanesTab {}
109	private method BuildViewTab {}
110	private method BuildVolumeTab {}
111	private method ComputeTransferFunc { tf }
112	private method EventuallyResize { w h }
113	private method EventuallyResizeLegend { }
114	private method NameTransferFunc { dataobj comp }
115	private method PanCamera {}
116	private method ParseLevelsOption { tf levels }
117	private method ParseMarkersOption { tf markers }
118	private method volume { tag name }
119	private method GetVolumeInfo { w }
120
121	private method AddImageControls { frame widget }
122	private method SetWaitVariable { value } {
123	set _getimage $value
124	}
125	private method GetWaitVariable {} {
126	return $_getimage
127	}
128	private method WaitForImage {} {
129	tkwait variable [itcl::scope _getimage]
130	return $_getimage
131	}
132
133	private variable _outbuf ;# buffer for outgoing commands
134
135	private variable _dlist "" ;# list of data objects
136	private variable _allDataObjs
137	private variable _obj2ovride ;# maps dataobj => style override
138	private variable _serverVols ;# contains all the dataobj-component
139	;# to volumes in the server
140	private variable _serverTfs ;# contains all the transfer functions
141	;# in the server.
142	private variable _recvdVols ;# list of data objs to send to server
143	private variable _vol2style ;# maps dataobj-component to transfunc
144	private variable _style2vols ;# maps tf back to list of
145	# dataobj-components using the tf.
146
147	private variable _click ;# info used for rotate operations
148	private variable _limits ;# autoscale min/max for all axes
149	private variable _view ;# view params for 3D view
150	private variable _isomarkers ;# array of isosurface level values 0..1
151	private common _settings
152	# Array of transfer functions in server. If 0 the transfer has been
153	# defined but not loaded. If 1 the transfer function has been named
154	# and loaded.
155	private variable _activeTfs
156	private variable _first "" ;# This is the topmost volume.
157	private variable _buffering 0
158
159	# This
160	# indicates which isomarkers and transfer
161	# function to use when changing markers,
162	# opacity, or thickness.
163	common _downloadPopup ;# download options from popup
164	private common _hardcopy
165	private variable _width 0
166	private variable _height 0
167	private variable _resizePending 0
168	private variable _resizeLegendPending 0
169	private variable _getimage 0
170	}
171
172	itk::usual NanovisViewer {
173	keep -background -foreground -cursor -font
174	keep -plotbackground -plotforeground
175	}
176	itk::usual TkPushbutton {
177	}
178
179	# ----------------------------------------------------------------------
180	# CONSTRUCTOR
181	# ----------------------------------------------------------------------
182	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
183
184	# Draw legend event
185	$_dispatcher register !legend
186	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
187
188	# Send transfer functions event
189	$_dispatcher register !send_transfunc
190	$_dispatcher dispatch $this !send_transfunc \
191	"[itcl::code $this SendTransferFuncs]; list"
192
193	# Rebuild event
194	$_dispatcher register !rebuild
195	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
196
197	# Resize event
198	$_dispatcher register !resize
199	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
200
201	set _outbuf ""
202
203	#
204	# Populate parser with commands handle incoming requests
205	#
206	$_parser alias image [itcl::code $this ReceiveImage]
207	$_parser alias legend [itcl::code $this ReceiveLegend]
208	$_parser alias data [itcl::code $this ReceiveData]
209
210	# Initialize the view to some default parameters.
211	array set _view {
212	theta 45
213	phi 45
214	psi 0
215	zoom 1.0
216	pan-x 0
217	pan-y 0
218	}
219	set _limits(vmin) 0.0
220	set _limits(vmax) 1.0
221
222	array set _settings [subst {
223	$this-pan-x $_view(pan-x)
224	$this-pan-y $_view(pan-y)
225	$this-phi $_view(phi)
226	$this-psi $_view(psi)
227	$this-theta $_view(theta)
228	$this-volume 1
229	$this-xcutplane 0
230	$this-xcutposition 0
231	$this-ycutplane 0
232	$this-ycutposition 0
233	$this-zcutplane 0
234	$this-zcutposition 0
235	$this-zoom $_view(zoom)
236	}]
237
238	itk_component add 3dview {
239	label $itk_component(plotarea).vol -image $_image(plot) \
240	-highlightthickness 0 -borderwidth 0
241	} {
242	usual
243	ignore -highlightthickness -borderwidth -background
244	}
245
246	set f [$itk_component(main) component controls]
247	itk_component add reset {
248	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
249	-highlightthickness 0 \
250	-image [Rappture::icon reset-view] \
251	-command [itcl::code $this Zoom reset]
252	} {
253	usual
254	ignore -highlightthickness
255	}
256	pack $itk_component(reset) -side top -padx 2 -pady 2
257	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
258
259	itk_component add zoomin {
260	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
261	-highlightthickness 0 \
262	-image [Rappture::icon zoom-in] \
263	-command [itcl::code $this Zoom in]
264	} {
265	usual
266	ignore -highlightthickness
267	}
268	pack $itk_component(zoomin) -side top -padx 2 -pady 2
269	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
270
271	itk_component add zoomout {
272	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
273	-highlightthickness 0 \
274	-image [Rappture::icon zoom-out] \
275	-command [itcl::code $this Zoom out]
276	} {
277	usual
278	ignore -highlightthickness
279	}
280	pack $itk_component(zoomout) -side top -padx 2 -pady 2
281	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
282
283	itk_component add volume {
284	blt::tk::pushbutton $f.volume \
285	-onimage [Rappture::icon volume-on] \
286	-offimage [Rappture::icon volume-off] \
287	-command [itcl::code $this FixSettings volume] \
288	-variable [itcl::scope _settings($this-volume)]
289	}
290	$itk_component(volume) select
291	Rappture::Tooltip::for $itk_component(volume) \
292	"Toggle the volume cloud on/off"
293	pack $itk_component(volume) -padx 2 -pady 2
294
295	BuildViewTab
296	BuildVolumeTab
297	BuildCutplanesTab
298	BuildCameraTab
299
300	# Legend
301
302	set _image(legend) [image create picture]
303	itk_component add legend {
304	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
305	} {
306	usual
307	ignore -highlightthickness
308	rename -background -plotbackground plotBackground Background
309	}
310	bind $itk_component(legend) <Configure> \
311	[itcl::code $this EventuallyResizeLegend]
312
313	# Hack around the Tk panewindow. The problem is that the requested
314	# size of the 3d view isn't set until an image is retrieved from
315	# the server. So the panewindow uses the tiny size.
316	set w 10000
317	pack forget $itk_component(3dview)
318	blt::table $itk_component(plotarea) \
319	0,0 $itk_component(3dview) -fill both -reqwidth $w \
320	1,0 $itk_component(legend) -fill x
321	blt::table configure $itk_component(plotarea) r1 -resize none
322
323	# Bindings for rotation via mouse
324	bind $itk_component(3dview) <ButtonPress-1> \
325	[itcl::code $this Rotate click %x %y]
326	bind $itk_component(3dview) <B1-Motion> \
327	[itcl::code $this Rotate drag %x %y]
328	bind $itk_component(3dview) <ButtonRelease-1> \
329	[itcl::code $this Rotate release %x %y]
330	bind $itk_component(3dview) <Configure> \
331	[itcl::code $this EventuallyResize %w %h]
332
333	# Bindings for panning via mouse
334	bind $itk_component(3dview) <ButtonPress-2> \
335	[itcl::code $this Pan click %x %y]
336	bind $itk_component(3dview) <B2-Motion> \
337	[itcl::code $this Pan drag %x %y]
338	bind $itk_component(3dview) <ButtonRelease-2> \
339	[itcl::code $this Pan release %x %y]
340
341	# Bindings for panning via keyboard
342	bind $itk_component(3dview) <KeyPress-Left> \
343	[itcl::code $this Pan set -10 0]
344	bind $itk_component(3dview) <KeyPress-Right> \
345	[itcl::code $this Pan set 10 0]
346	bind $itk_component(3dview) <KeyPress-Up> \
347	[itcl::code $this Pan set 0 -10]
348	bind $itk_component(3dview) <KeyPress-Down> \
349	[itcl::code $this Pan set 0 10]
350	bind $itk_component(3dview) <Shift-KeyPress-Left> \
351	[itcl::code $this Pan set -2 0]
352	bind $itk_component(3dview) <Shift-KeyPress-Right> \
353	[itcl::code $this Pan set 2 0]
354	bind $itk_component(3dview) <Shift-KeyPress-Up> \
355	[itcl::code $this Pan set 0 -2]
356	bind $itk_component(3dview) <Shift-KeyPress-Down> \
357	[itcl::code $this Pan set 0 2]
358
359	# Bindings for zoom via keyboard
360	bind $itk_component(3dview) <KeyPress-Prior> \
361	[itcl::code $this Zoom out]
362	bind $itk_component(3dview) <KeyPress-Next> \
363	[itcl::code $this Zoom in]
364
365	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
366
367	if {[string equal "x11" [tk windowingsystem]]} {
368	# Bindings for zoom via mouse
369	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
370	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
371	}
372
373	set _image(download) [image create picture]
374
375	eval itk_initialize $args
376
377	Connect
378	}
379
380	# ----------------------------------------------------------------------
381	# DESTRUCTOR
382	# ----------------------------------------------------------------------
383	itcl::body Rappture::NanovisViewer::destructor {} {
384	$_dispatcher cancel !rebuild
385	$_dispatcher cancel !send_transfunc
386	$_dispatcher cancel !resize
387	image delete $_image(plot)
388	image delete $_image(legend)
389	image delete $_image(download)
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	array set params {
402	-color auto
403	-width 1
404	-linestyle solid
405	-brightness 0
406	-raise 0
407	-description ""
408	-param ""
409	}
410	foreach {opt val} $settings {
411	if {![info exists params($opt)]} {
412	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
413	}
414	set params($opt) $val
415	}
416	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
417	# can't handle -autocolors yet
418	set params(-color) black
419	}
420	set pos [lsearch -exact $dataobj $_dlist]
421	if {$pos < 0} {
422	lappend _dlist $dataobj
423	set _allDataObjs($dataobj) 1
424	set _obj2ovride($dataobj-color) $params(-color)
425	set _obj2ovride($dataobj-width) $params(-width)
426	set _obj2ovride($dataobj-raise) $params(-raise)
427	$_dispatcher event -idle !rebuild
428	}
429	}
430
431	# ----------------------------------------------------------------------
432	# USAGE: get ?-objects?
433	# USAGE: get ?-image 3dview\|legend?
434	#
435	# Clients use this to query the list of objects being plotted, in
436	# order from bottom to top of this result. The optional "-image"
437	# flag can also request the internal images being shown.
438	# ----------------------------------------------------------------------
439	itcl::body Rappture::NanovisViewer::get {args} {
440	if {[llength $args] == 0} {
441	set args "-objects"
442	}
443
444	set op [lindex $args 0]
445	switch -- $op {
446	-objects {
447	# put the dataobj list in order according to -raise options
448	set dlist $_dlist
449	foreach obj $dlist {
450	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
451	set i [lsearch -exact $dlist $obj]
452	if {$i >= 0} {
453	set dlist [lreplace $dlist $i $i]
454	lappend dlist $obj
455	}
456	}
457	}
458	return $dlist
459	}
460	-image {
461	if {[llength $args] != 2} {
462	error "wrong # args: should be \"get -image 3dview\|legend\""
463	}
464	switch -- [lindex $args end] {
465	3dview {
466	return $_image(plot)
467	}
468	legend {
469	return $_image(legend)
470	}
471	default {
472	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
473	}
474	}
475	}
476	default {
477	error "bad option \"$op\": should be -objects or -image"
478	}
479	}
480	}
481
482	# ----------------------------------------------------------------------
483	# USAGE: delete ?<dataobj1> <dataobj2> ...?
484	#
485	# Clients use this to delete a dataobj from the plot. If no dataobjs
486	# are specified, then all dataobjs are deleted. No data objects are
487	# deleted. They are only removed from the display list.
488	#
489	# ----------------------------------------------------------------------
490	itcl::body Rappture::NanovisViewer::delete {args} {
491	if {[llength $args] == 0} {
492	set args $_dlist
493	}
494	# Delete all specified dataobjs
495	set changed 0
496	foreach dataobj $args {
497	set pos [lsearch -exact $_dlist $dataobj]
498	if { $pos >= 0 } {
499	set _dlist [lreplace $_dlist $pos $pos]
500	array unset _limits $dataobj*
501	array unset _obj2ovride $dataobj-*
502	array unset _vol2style $dataobj-*
503	set changed 1
504	}
505	}
506	# If anything changed, then rebuild the plot
507	if {$changed} {
508	$_dispatcher event -idle !rebuild
509	}
510	}
511
512	# ----------------------------------------------------------------------
513	# USAGE: scale ?<data1> <data2> ...?
514	#
515	# Sets the default limits for the overall plot according to the
516	# limits of the data for all of the given <data> objects. This
517	# accounts for all objects--even those not showing on the screen.
518	# Because of this, the limits are appropriate for all objects as
519	# the user scans through data in the ResultSet viewer.
520	# ----------------------------------------------------------------------
521	itcl::body Rappture::NanovisViewer::scale {args} {
522	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
523	set _limits($val) ""
524	}
525	foreach obj $args {
526	foreach axis {x y z v} {
527
528	foreach { min max } [$obj limits $axis] break
529
530	if {"" != $min && "" != $max} {
531	if {"" == $_limits(${axis}min)} {
532	set _limits(${axis}min) $min
533	set _limits(${axis}max) $max
534	} else {
535	if {$min < $_limits(${axis}min)} {
536	set _limits(${axis}min) $min
537	}
538	if {$max > $_limits(${axis}max)} {
539	set _limits(${axis}max) $max
540	}
541	}
542	}
543	}
544	}
545	}
546
547	# ----------------------------------------------------------------------
548	# USAGE: download coming
549	# USAGE: download controls <downloadCommand>
550	# USAGE: download now
551	#
552	# Clients use this method to create a downloadable representation
553	# of the plot. Returns a list of the form {ext string}, where
554	# "ext" is the file extension (indicating the type of data) and
555	# "string" is the data itself.
556	# ----------------------------------------------------------------------
557	itcl::body Rappture::NanovisViewer::download {option args} {
558	switch $option {
559	coming {
560	if {[catch { $_image(download) snap $itk_component(plotarea)}]} {
561	$_image(download) blank #000000
562	}
563	}
564	controls {
565	set popup .nanovisviewerdownload
566	if {![winfo exists $popup]} {
567	# If we haven't created the popup yet, do it now
568	Rappture::Balloon $popup \
569	-title "[Rappture::filexfer::label downloadWord] as..."
570	set inner [$popup component inner]
571	label $inner.summary -text "" -anchor w
572	pack $inner.summary -side top
573	radiobutton $inner.image -text "Image (PNG/JPEG/GIF)" \
574	-variable \
575	::Rappture::NanovisViewer::_downloadPopup(format) \
576	-font "Arial 10 " \
577	-value image
578	Rappture::Tooltip::for $inner.image "Save as image."
579	pack $inner.image -anchor w
580	button $inner.go -text [Rappture::filexfer::label download] \
581	-command [lindex $args 0]
582	pack $inner.go -side bottom -pady 4
583	$inner.image select
584	} else {
585	set inner [$popup component inner]
586	}
587	set num [llength [get]]
588	set num [expr {($num == 1) ? "1 result" : "$num results"}]
589	set word [Rappture::filexfer::label downloadWord]
590	$inner.summary configure -text "$word $num in the following format:"
591	update idletasks ; # Fix initial sizes
592	return $popup
593	}
594	now {
595	set popup .nanovisviewerdownload
596	if { [winfo exists $popup] } {
597	$popup deactivate
598	}
599	switch -- $_downloadPopup(format) {
600	"image" {
601	set popup .nanovisviewerimage
602	if { ![winfo exists $popup] } {
603	# Create the balloon popup and and the print image
604	# dialog widget to it.
605	Rappture::Balloon $popup -title "Save as image..." \
606	-deactivatecommand \
607	[itcl::code $this SetWaitVariable 0]
608	set inner [$popup component inner]
609	AddImageControls $inner [lindex $args 0]
610	} else {
611	set inner [$popup component inner]
612	}
613	set _downloadPopup(image_controls) $inner
614	update
615	# Activate the popup and call for the output.
616	foreach { widget toolName plotName } $args break
617	SetWaitVariable 0
618	$popup activate $widget left
619	set bool [WaitForImage]
620	$popup deactivate
621	if { $bool } {
622	set inner $_downloadPopup(image_controls)
623	set fmt [$inner.format translate [$inner.format value]]
624	switch $fmt {
625	"jpg" {
626	$_image(download) export jpg -quality 100 \
627	-data bytes
628	}
629	"png" {
630	$_image(download) export png -data bytes
631	}
632	"gif" {
633	$_image(download) export gif -data bytes
634	}
635	default {
636	return ""
637	}
638	}
639	return [list .$fmt $bytes]
640	}
641	}
642	}
643	return ""
644	}
645	default {
646	error "bad option \"$option\": should be coming, controls, now"
647	}
648	}
649	}
650
651	# ----------------------------------------------------------------------
652	# USAGE: Connect ?<host:port>,<host:port>...?
653	#
654	# Clients use this method to establish a connection to a new
655	# server, or to reestablish a connection to the previous server.
656	# Any existing connection is automatically closed.
657	# ----------------------------------------------------------------------
658	itcl::body Rappture::NanovisViewer::Connect {} {
659	set _hosts [GetServerList "nanovis"]
660	if { "" == $_hosts } {
661	return 0
662	}
663	set result [VisViewer::Connect $_hosts]
664	if { $result } {
665	set w [winfo width $itk_component(3dview)]
666	set h [winfo height $itk_component(3dview)]
667	EventuallyResize $w $h
668	}
669	return $result
670	}
671
672	#
673	# isconnected --
674	#
675	# Indicates if we are currently connected to the visualization server.
676	#
677	itcl::body Rappture::NanovisViewer::isconnected {} {
678	return [VisViewer::IsConnected]
679	}
680
681	#
682	# disconnect --
683	#
684	itcl::body Rappture::NanovisViewer::disconnect {} {
685	Disconnect
686	}
687
688	#
689	# Disconnect --
690	#
691	# Clients use this method to disconnect from the current rendering
692	# server.
693	#
694	itcl::body Rappture::NanovisViewer::Disconnect {} {
695	VisViewer::Disconnect
696
697	# disconnected -- no more data sitting on server
698	set _outbuf ""
699	array unset _serverVols
700	}
701
702	#
703	# sendto --
704	#
705	itcl::body Rappture::NanovisViewer::sendto { bytes } {
706	SendBytes "$bytes\n"
707	}
708
709	#
710	# SendCmd
711	#
712	# Send commands off to the rendering server. If we're currently
713	# sending data objects to the server, buffer the commands to be
714	# sent later.
715	#
716	itcl::body Rappture::NanovisViewer::SendCmd {string} {
717	if { $_buffering } {
718	append _outbuf $string "\n"
719	} else {
720	foreach line [split $string \n] {
721	SendEcho >>line $line
722	}
723	SendBytes "$string\n"
724	}
725	}
726
727
728	# ----------------------------------------------------------------------
729	# USAGE: SendTransferFuncs
730	# ----------------------------------------------------------------------
731	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
732	if { $_first == "" } {
733	puts stderr "first not set"
734	return
735	}
736	# Insure that the global opacity and thickness settings (in the slider
737	# settings widgets) are used for the active transfer-function. Update
738	# the values in the _settings varible.
739	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
740	# Scale values between 0.00001 and 0.01000
741	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
742
743	foreach vol [CurrentVolumes] {
744	if { ![info exists _serverVols($vol)] \|\| !$_serverVols($vol) } {
745	# The volume hasn't reached the server yet. How did we get
746	# here?
747	continue
748	}
749	if { ![info exists _vol2style($vol)] } {
750	puts stderr "unknown volume $vol"
751	continue; # How does this happen?
752	}
753	set tf $_vol2style($vol)
754	set _settings($this-$tf-opacity) $opacity
755	set _settings($this-$tf-thickness) $thickness
756	ComputeTransferFunc $tf
757	# FIXME: Need to the send information as to what transfer functions
758	# to update so that we only update the transfer function
759	# as necessary. Right now, all transfer functions are
760	# updated. This makes moving the isomarker slider chunky.
761	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
762	set _activeTfs($tf) 1
763	}
764	SendCmd "volume shading transfunc $tf $vol"
765	}
766	FixLegend
767	}
768
769	# ----------------------------------------------------------------------
770	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
771	#
772	# Invoked automatically whenever the "image" command comes in from
773	# the rendering server. Indicates that binary image data with the
774	# specified <size> will follow.
775	# ----------------------------------------------------------------------
776	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
777	array set info {
778	-token "???"
779	-bytes 0
780	-type image
781	}
782	array set info $args
783	set bytes [ReceiveBytes $info(-bytes)]
784	ReceiveEcho <<line "<read $info(-bytes) bytes"
785	if { $info(-type) == "image" } {
786	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
787	$_image(plot) configure -data $bytes
788	} elseif { $info(type) == "print" } {
789	set tag $this-print-$info(-token)
790	set _hardcopy($tag) $bytes
791	}
792	}
793
794	#
795	# ReceiveLegend --
796	#
797	# The procedure is the response from the render server to each "legend"
798	# command. The server sends back a "legend" command invoked our
799	# the slave interpreter. The purpose is to collect data of the image
800	# representing the legend in the canvas. In addition, the isomarkers
801	# of the active transfer function are displayed.
802	#
803	# I don't know is this is the right place to display the isomarkers.
804	# I don't know all the different paths used to draw the plot. There's
805	# "Rebuild", "add", etc.
806	#
807	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
808	if { ![isconnected] } {
809	return
810	}
811	set bytes [ReceiveBytes $size]
812	$_image(legend) configure -data $bytes
813	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
814
815	set c $itk_component(legend)
816	set w [winfo width $c]
817	set h [winfo height $c]
818	set lx 10
819	set ly [expr {$h - 1}]
820	if {"" == [$c find withtag transfunc]} {
821	$c create image 10 10 -anchor nw \
822	-image $_image(legend) -tags transfunc
823	$c create text $lx $ly -anchor sw \
824	-fill $itk_option(-plotforeground) -tags "limits vmin"
825	$c create text [expr {$w-$lx}] $ly -anchor se \
826	-fill $itk_option(-plotforeground) -tags "limits vmax"
827	$c lower transfunc
828	$c bind transfunc <ButtonRelease-1> \
829	[itcl::code $this AddIsoMarker %x %y]
830	}
831	# Display the markers used by the active transfer function.
832
833	array set limits [limits $tf]
834	$c itemconfigure vmin -text [format %.2g $limits(min)]
835	$c coords vmin $lx $ly
836
837	$c itemconfigure vmax -text [format %.2g $limits(max)]
838	$c coords vmax [expr {$w-$lx}] $ly
839
840	if { [info exists _isomarkers($tf)] } {
841	foreach m $_isomarkers($tf) {
842	$m visible yes
843	}
844	}
845	}
846
847	#
848	# ReceiveData --
849	#
850	# The procedure is the response from the render server to each "data
851	# follows" command. The server sends back a "data" command invoked our
852	# the slave interpreter. The purpose is to collect the min/max of the
853	# volume sent to the render server. Since the client (nanovisviewer)
854	# doesn't parse 3D data formats, we rely on the server (nanovis) to
855	# tell us what the limits are. Once we've received the limits to all
856	# the data we've sent (tracked by _recvdVols) we can then determine
857	# what the transfer functions are for these volumes.
858	#
859	#
860	# Note: There is a considerable tradeoff in having the server report
861	# back what the data limits are. It means that much of the code
862	# having to do with transfer-functions has to wait for the data
863	# to come back, since the isomarkers are calculated based upon
864	# the data limits. The client code is much messier because of
865	# this. The alternative is to parse any of the 3D formats on the
866	# client side.
867	#
868	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
869	if { ![isconnected] } {
870	return
871	}
872	# Arguments from server are name value pairs. Stuff them in an array.
873	array set info $args
874
875	set tag $info(tag)
876	set parts [split $tag -]
877
878	#
879	# Volumes don't exist until we're told about them.
880	#
881	set dataobj [lindex $parts 0]
882	set _serverVols($tag) 1
883	if { $_settings($this-volume) && $dataobj == $_first } {
884	SendCmd "volume state 1 $tag"
885	}
886	set _limits($tag-min) $info(min); # Minimum value of the volume.
887	set _limits($tag-max) $info(max); # Maximum value of the volume.
888	set _limits(vmin) $info(vmin); # Overall minimum value.
889	set _limits(vmax) $info(vmax); # Overall maximum value.
890
891	unset _recvdVols($tag)
892	if { [array size _recvdVols] == 0 } {
893	# The active transfer function is by default the first component of
894	# the first data object. This assumes that the data is always
895	# successfully transferred.
896	updatetransferfuncs
897	}
898	}
899
900	# ----------------------------------------------------------------------
901	# USAGE: Rebuild
902	#
903	# Called automatically whenever something changes that affects the
904	# data in the widget. Clears any existing data and rebuilds the
905	# widget to display new data.
906	# ----------------------------------------------------------------------
907	itcl::body Rappture::NanovisViewer::Rebuild {} {
908
909	# Turn on buffering of commands to the server. We don't want to
910	# be preempted by a server disconnect/reconnect (which automatically
911	# generates a new call to Rebuild).
912	set _buffering 1
913
914	# Hide all the isomarkers. Can't remove them. Have to remember the
915	# settings since the user may have created/deleted/moved markers.
916
917	foreach tf [array names _isomarkers] {
918	foreach m $_isomarkers($tf) {
919	$m visible no
920	}
921	}
922
923	set w [winfo width $itk_component(3dview)]
924	set h [winfo height $itk_component(3dview)]
925	EventuallyResize $w $h
926
927	foreach dataobj [get] {
928	foreach comp [$dataobj components] {
929	set vol $dataobj-$comp
930	if { ![info exists _serverVols($vol)] } {
931	# Send the data as one huge base64-encoded mess -- yuck!
932	set data [$dataobj values $comp]
933	set nbytes [string length $data]
934	append _outbuf "volume data follows $nbytes $vol\n"
935	append _outbuf $data
936	set _recvdVols($vol) 1
937	set _serverVols($vol) 0
938	}
939	NameTransferFunc $dataobj $comp
940	}
941	}
942	#
943	# Reset the camera and other view parameters
944	#
945
946	set _settings($this-theta) $_view(theta)
947	set _settings($this-phi) $_view(phi)
948	set _settings($this-psi) $_view(psi)
949	set _settings($this-pan-x) $_view(pan-x)
950	set _settings($this-pan-y) $_view(pan-y)
951	set _settings($this-zoom) $_view(zoom)
952
953	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
954	SendCmd "camera angle $xyz"
955	PanCamera
956	SendCmd "camera zoom $_view(zoom)"
957	FixSettings light
958	FixSettings transp
959	FixSettings isosurface
960	FixSettings grid
961	FixSettings axes
962	FixSettings outline
963
964	# nothing to send -- activate the proper ivol
965	SendCmd "volume state 0"
966	set _first [lindex [get] 0]
967	if {"" != $_first} {
968	set axis [$_first hints updir]
969	if { "" != $axis } {
970	SendCmd "up $axis"
971	}
972	set location [$_first hints camera]
973	if { $location != "" } {
974	array set _view $location
975	}
976	set vols [array names _serverVols $_first-*]
977	if { $vols != "" } {
978	SendCmd "volume state 1 $vols"
979	}
980	}
981	# If the first volume already exists on the server, then make sure we
982	# display the proper transfer function in the legend.
983	set comp [lindex [$_first components] 0]
984	if { [info exists _serverVols($_first-$comp)] } {
985	updatetransferfuncs
986	}
987
988	# Sync the state of slicers
989	set vols [CurrentVolumes -cutplanes]
990	foreach axis {x y z} {
991	SendCmd "cutplane state $_settings($this-${axis}cutplane) $axis $vols"
992	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
993	SendCmd "cutplane position $pos $axis $vols"
994	}
995	SendCmd "volume data state $_settings($this-volume) $vols"
996	set _buffering 0; # Turn off buffering.
997	# Actually write the commands to the server socket. If it fails, we don't
998	# care. We're finished here.
999	blt::busy hold $itk_component(hull)
1000	SendBytes $_outbuf;
1001	blt::busy release $itk_component(hull)
1002	set _outbuf ""; # Clear the buffer.
1003	}
1004
1005	# ----------------------------------------------------------------------
1006	# USAGE: CurrentVolumes ?-cutplanes?
1007	#
1008	# Returns a list of volume server IDs for the current volume being
1009	# displayed. This is normally a single ID, but it might be a list
1010	# of IDs if the current data object has multiple components.
1011	# ----------------------------------------------------------------------
1012	itcl::body Rappture::NanovisViewer::CurrentVolumes {{what -all}} {
1013	set rlist ""
1014	if { $_first == "" } {
1015	return
1016	}
1017	foreach comp [$_first components] {
1018	set vol $_first-$comp
1019	if { [info exists _serverVols($vol)] && $_serverVols($vol) } {
1020	array set style {
1021	-cutplanes 1
1022	}
1023	array set style [lindex [$_first components -style $comp] 0]
1024	if {$what != "-cutplanes" \|\| $style(-cutplanes)} {
1025	lappend rlist $vol
1026	}
1027	}
1028	}
1029	return $rlist
1030	}
1031
1032	# ----------------------------------------------------------------------
1033	# USAGE: Zoom in
1034	# USAGE: Zoom out
1035	# USAGE: Zoom reset
1036	#
1037	# Called automatically when the user clicks on one of the zoom
1038	# controls for this widget. Changes the zoom for the current view.
1039	# ----------------------------------------------------------------------
1040	itcl::body Rappture::NanovisViewer::Zoom {option} {
1041	switch -- $option {
1042	"in" {
1043	set _view(zoom) [expr {$_view(zoom)*1.25}]
1044	set _settings($this-zoom) $_view(zoom)
1045	}
1046	"out" {
1047	set _view(zoom) [expr {$_view(zoom)*0.8}]
1048	set _settings($this-zoom) $_view(zoom)
1049	}
1050	"reset" {
1051	array set _view {
1052	theta 45
1053	phi 45
1054	psi 0
1055	zoom 1.0
1056	pan-x 0
1057	pan-y 0
1058	}
1059	if { $_first != "" } {
1060	set location [$_first hints camera]
1061	if { $location != "" } {
1062	array set _view $location
1063	}
1064	}
1065	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
1066	SendCmd "camera angle $xyz"
1067	PanCamera
1068	set _settings($this-theta) $_view(theta)
1069	set _settings($this-phi) $_view(phi)
1070	set _settings($this-psi) $_view(psi)
1071	set _settings($this-pan-x) $_view(pan-x)
1072	set _settings($this-pan-y) $_view(pan-y)
1073	set _settings($this-zoom) $_view(zoom)
1074	}
1075	}
1076	SendCmd "camera zoom $_view(zoom)"
1077	}
1078
1079	itcl::body Rappture::NanovisViewer::PanCamera {} {
1080	#set x [expr ($_view(pan-x)) / $_limits(xrange)]
1081	#set y [expr ($_view(pan-y)) / $_limits(yrange)]
1082	set x $_view(pan-x)
1083	set y $_view(pan-y)
1084	SendCmd "camera pan $x $y"
1085	}
1086
1087
1088	# ----------------------------------------------------------------------
1089	# USAGE: Rotate click <x> <y>
1090	# USAGE: Rotate drag <x> <y>
1091	# USAGE: Rotate release <x> <y>
1092	#
1093	# Called automatically when the user clicks/drags/releases in the
1094	# plot area. Moves the plot according to the user's actions.
1095	# ----------------------------------------------------------------------
1096	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1097	switch -- $option {
1098	click {
1099	$itk_component(3dview) configure -cursor fleur
1100	set _click(x) $x
1101	set _click(y) $y
1102	set _click(theta) $_view(theta)
1103	set _click(phi) $_view(phi)
1104	}
1105	drag {
1106	if {[array size _click] == 0} {
1107	Rotate click $x $y
1108	} else {
1109	set w [winfo width $itk_component(3dview)]
1110	set h [winfo height $itk_component(3dview)]
1111	if {$w <= 0 \|\| $h <= 0} {
1112	return
1113	}
1114
1115	if {[catch {
1116	# this fails sometimes for no apparent reason
1117	set dx [expr {double($x-$_click(x))/$w}]
1118	set dy [expr {double($y-$_click(y))/$h}]
1119	}]} {
1120	return
1121	}
1122
1123	#
1124	# Rotate the camera in 3D
1125	#
1126	if {$_view(psi) > 90 \|\| $_view(psi) < -90} {
1127	# when psi is flipped around, theta moves backwards
1128	set dy [expr {-$dy}]
1129	}
1130	set theta [expr {$_view(theta) - $dy*180}]
1131	while {$theta < 0} { set theta [expr {$theta+180}] }
1132	while {$theta > 180} { set theta [expr {$theta-180}] }
1133
1134	if {abs($theta) >= 30 && abs($theta) <= 160} {
1135	set phi [expr {$_view(phi) - $dx*360}]
1136	while {$phi < 0} { set phi [expr {$phi+360}] }
1137	while {$phi > 360} { set phi [expr {$phi-360}] }
1138	set psi $_view(psi)
1139	} else {
1140	set phi $_view(phi)
1141	set psi [expr {$_view(psi) - $dx*360}]
1142	while {$psi < -180} { set psi [expr {$psi+360}] }
1143	while {$psi > 180} { set psi [expr {$psi-360}] }
1144	}
1145
1146	set _view(theta) $theta
1147	set _view(phi) $phi
1148	set _view(psi) $psi
1149	set xyz [Euler2XYZ $theta $phi $psi]
1150	set _settings($this-theta) $_view(theta)
1151	set _settings($this-phi) $_view(phi)
1152	set _settings($this-psi) $_view(psi)
1153	SendCmd "camera angle $xyz"
1154	set _click(x) $x
1155	set _click(y) $y
1156	}
1157	}
1158	release {
1159	Rotate drag $x $y
1160	$itk_component(3dview) configure -cursor ""
1161	catch {unset _click}
1162	}
1163	default {
1164	error "bad option \"$option\": should be click, drag, release"
1165	}
1166	}
1167	}
1168
1169	# ----------------------------------------------------------------------
1170	# USAGE: $this Pan click x y
1171	# $this Pan drag x y
1172	# $this Pan release x y
1173	#
1174	# Called automatically when the user clicks on one of the zoom
1175	# controls for this widget. Changes the zoom for the current view.
1176	# ----------------------------------------------------------------------
1177	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1178	# Experimental stuff
1179	set w [winfo width $itk_component(3dview)]
1180	set h [winfo height $itk_component(3dview)]
1181	if { $option == "set" } {
1182	set x [expr $x / double($w)]
1183	set y [expr $y / double($h)]
1184	set _view(pan-x) [expr $_view(pan-x) + $x]
1185	set _view(pan-y) [expr $_view(pan-y) + $y]
1186	PanCamera
1187	set _settings($this-pan-x) $_view(pan-x)
1188	set _settings($this-pan-y) $_view(pan-y)
1189	return
1190	}
1191	if { $option == "click" } {
1192	set _click(x) $x
1193	set _click(y) $y
1194	$itk_component(3dview) configure -cursor hand1
1195	}
1196	if { $option == "drag" \|\| $option == "release" } {
1197	set dx [expr ($_click(x) - $x)/double($w)]
1198	set dy [expr ($_click(y) - $y)/double($h)]
1199	set _click(x) $x
1200	set _click(y) $y
1201	set _view(pan-x) [expr $_view(pan-x) - $dx]
1202	set _view(pan-y) [expr $_view(pan-y) - $dy]
1203	PanCamera
1204	set _settings($this-pan-x) $_view(pan-x)
1205	set _settings($this-pan-y) $_view(pan-y)
1206	}
1207	if { $option == "release" } {
1208	$itk_component(3dview) configure -cursor ""
1209	}
1210	}
1211
1212	# ----------------------------------------------------------------------
1213	# USAGE: FixSettings <what> ?<value>?
1214	#
1215	# Used internally to update rendering settings whenever parameters
1216	# change in the popup settings panel. Sends the new settings off
1217	# to the back end.
1218	# ----------------------------------------------------------------------
1219	itcl::body Rappture::NanovisViewer::FixSettings {what {value ""}} {
1220	switch -- $what {
1221	light {
1222	if {[isconnected]} {
1223	set val $_settings($this-light)
1224	set sval [expr {0.1*$val}]
1225	SendCmd "volume shading diffuse $sval"
1226	set sval [expr {sqrt($val+1.0)}]
1227	SendCmd "volume shading specular $sval"
1228	}
1229	}
1230	transp {
1231	if {[isconnected]} {
1232	set val $_settings($this-transp)
1233	set sval [expr {0.2*$val+1}]
1234	SendCmd "volume shading opacity $sval"
1235	}
1236	}
1237	opacity {
1238	if {[isconnected] && [array size _activeTfs] > 0 } {
1239	set val $_settings($this-opacity)
1240	set sval [expr { 0.01 * double($val) }]
1241	foreach tf [array names _activeTfs] {
1242	set _settings($this-$tf-opacity) $sval
1243	set _activeTfs($tf) 0
1244	}
1245	updatetransferfuncs
1246	}
1247	}
1248
1249	thickness {
1250	if {[isconnected] && [array names _activeTfs] > 0 } {
1251	set val $_settings($this-thickness)
1252	# Scale values between 0.00001 and 0.01000
1253	set sval [expr {0.0001*double($val)}]
1254	foreach tf [array names _activeTfs] {
1255	set _settings($this-$tf-thickness) $sval
1256	set _activeTfs($tf) 0
1257	}
1258	updatetransferfuncs
1259	}
1260	}
1261	"outline" {
1262	if {[isconnected]} {
1263	SendCmd "volume outline state $_settings($this-outline)"
1264	}
1265	}
1266	"isosurface" {
1267	if {[isconnected]} {
1268	SendCmd "volume shading isosurface $_settings($this-isosurface)"
1269	}
1270	}
1271	"grid" {
1272	if { [isconnected] } {
1273	SendCmd "grid visible $_settings($this-grid)"
1274	}
1275	}
1276	"axes" {
1277	if { [isconnected] } {
1278	SendCmd "axis visible $_settings($this-axes)"
1279	}
1280	}
1281	"legend" {
1282	if { $_settings($this-legend) } {
1283	blt::table $itk_component(plotarea) \
1284	0,0 $itk_component(3dview) -fill both \
1285	1,0 $itk_component(legend) -fill x
1286	blt::table configure $itk_component(plotarea) r1 -resize none
1287	} else {
1288	blt::table forget $itk_component(legend)
1289	}
1290	}
1291	"volume" {
1292	if { [isconnected] } {
1293	set vols [CurrentVolumes -cutplanes]
1294	SendCmd "volume data state $_settings($this-volume) $vols"
1295	}
1296	}
1297	"xcutplane" - "ycutplane" - "zcutplane" {
1298	set axis [string range $what 0 0]
1299	set bool $_settings($this-$what)
1300	if { [isconnected] } {
1301	set vols [CurrentVolumes -cutplanes]
1302	SendCmd "cutplane state $bool $axis $vols"
1303	}
1304	if { $bool } {
1305	$itk_component(${axis}CutScale) configure -state normal \
1306	-troughcolor white
1307	} else {
1308	$itk_component(${axis}CutScale) configure -state disabled \
1309	-troughcolor grey82
1310	}
1311	}
1312	default {
1313	error "don't know how to fix $what"
1314	}
1315	}
1316	}
1317
1318	# ----------------------------------------------------------------------
1319	# USAGE: FixLegend
1320	#
1321	# Used internally to update the legend area whenever it changes size
1322	# or when the field changes. Asks the server to send a new legend
1323	# for the current field.
1324	# ----------------------------------------------------------------------
1325	itcl::body Rappture::NanovisViewer::FixLegend {} {
1326	set _resizeLegendPending 0
1327	set lineht [font metrics $itk_option(-font) -linespace]
1328	set w [expr {$_width-20}]
1329	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1330	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1331	set vol [lindex [CurrentVolumes] 0]
1332	if { [info exists _vol2style($vol)] } {
1333	SendCmd "legend $_vol2style($vol) $w $h"
1334	}
1335	} else {
1336	# Can't do this as this will remove the items associated with the
1337	# isomarkers.
1338
1339	#$itk_component(legend) delete all
1340	}
1341	}
1342
1343	#
1344	# NameTransferFunc --
1345	#
1346	# Creates a transfer function name based on the <style> settings in the
1347	# library run.xml file. This placeholder will be used later to create
1348	# and send the actual transfer function once the data info has been sent
1349	# to us by the render server. [We won't know the volume limits until the
1350	# server parses the 3D data and sends back the limits via ReceiveData.]
1351	#
1352	# FIXME: The current way we generate transfer-function names completely
1353	# ignores the -markers option. The problem is that we are forced
1354	# to compute the name from an increasing complex set of values:
1355	# color, levels, marker, opacity. I think we're stuck doing it
1356	# now.
1357	#
1358	itcl::body Rappture::NanovisViewer::NameTransferFunc { dataobj comp } {
1359	array set style {
1360	-color rainbow
1361	-levels 6
1362	-opacity 1.0
1363	}
1364	array set style [lindex [$dataobj components -style $comp] 0]
1365	set tf "$style(-color):$style(-levels):$style(-opacity)"
1366	set _vol2style($dataobj-$comp) $tf
1367	lappend _style2vols($tf) $dataobj-$comp
1368	return $tf
1369	}
1370
1371	#
1372	# ComputeTransferFunc --
1373	#
1374	# Computes and sends the transfer function to the render server. It's
1375	# assumed that the volume data limits are known and that the global
1376	# transfer-functions slider values have be setup. Both parts are
1377	# needed to compute the relative value (location) of the marker, and
1378	# the alpha map of the transfer function.
1379	#
1380	itcl::body Rappture::NanovisViewer::ComputeTransferFunc { tf } {
1381	array set style {
1382	-color rainbow
1383	-levels 6
1384	-opacity 1.0
1385	}
1386	foreach {dataobj comp} [split $_style2vols($tf) -] break
1387	array set style [lindex [$dataobj components -style $comp] 0]
1388
1389
1390	# We have to parse the style attributes for a volume using this
1391	# transfer-function once. This sets up the initial isomarkers for the
1392	# transfer function. The user may add/delete markers, so we have to
1393	# maintain a list of markers for each transfer-function. We use the one
1394	# of the volumes (the first in the list) using the transfer-function as a
1395	# reference.
1396	#
1397	# FIXME: The current way we generate transfer-function names completely
1398	# ignores the -markers option. The problem is that we are forced
1399	# to compute the name from an increasing complex set of values:
1400	# color, levels, marker, opacity. I think the cow's out of the
1401	# barn on this one.
1402
1403	if { ![info exists _isomarkers($tf)] } {
1404	# Have to defer creation of isomarkers until we have data limits
1405	if { [info exists style(-markers)] } {
1406	ParseMarkersOption $tf $style(-markers)
1407	} else {
1408	ParseLevelsOption $tf $style(-levels)
1409	}
1410	}
1411	if {$style(-color) == "rainbow"} {
1412	set style(-color) "white:yellow:green:cyan:blue:magenta"
1413	}
1414	set clist [split $style(-color) :]
1415	set cmap "0.0 [Color2RGB white] "
1416	for {set i 0} {$i < [llength $clist]} {incr i} {
1417	set x [expr {double($i+1)/([llength $clist]+1)}]
1418	set color [lindex $clist $i]
1419	append cmap "$x [Color2RGB $color] "
1420	}
1421	append cmap "1.0 [Color2RGB $color]"
1422
1423	set tag $this-$tf
1424	if { ![info exists _settings($tag-opacity)] } {
1425	set _settings($tag-opacity) $style(-opacity)
1426	}
1427	set max $_settings($tag-opacity)
1428
1429	set isovalues {}
1430	foreach m $_isomarkers($tf) {
1431	lappend isovalues [$m relval]
1432	}
1433	# Sort the isovalues
1434	set isovalues [lsort -real $isovalues]
1435
1436	if { ![info exists _settings($tag-thickness)]} {
1437	set _settings($tag-thickness) 0.05
1438	}
1439	set delta $_settings($tag-thickness)
1440
1441	set first [lindex $isovalues 0]
1442	set last [lindex $isovalues end]
1443	set wmap ""
1444	if { $first == "" \|\| $first != 0.0 } {
1445	lappend wmap 0.0 0.0
1446	}
1447	foreach x $isovalues {
1448	set x1 [expr {$x-$delta-0.00001}]
1449	set x2 [expr {$x-$delta}]
1450	set x3 [expr {$x+$delta}]
1451	set x4 [expr {$x+$delta+0.00001}]
1452	if { $x1 < 0.0 } {
1453	set x1 0.0
1454	} elseif { $x1 > 1.0 } {
1455	set x1 1.0
1456	}
1457	if { $x2 < 0.0 } {
1458	set x2 0.0
1459	} elseif { $x2 > 1.0 } {
1460	set x2 1.0
1461	}
1462	if { $x3 < 0.0 } {
1463	set x3 0.0
1464	} elseif { $x3 > 1.0 } {
1465	set x3 1.0
1466	}
1467	if { $x4 < 0.0 } {
1468	set x4 0.0
1469	} elseif { $x4 > 1.0 } {
1470	set x4 1.0
1471	}
1472	# add spikes in the middle
1473	lappend wmap $x1 0.0
1474	lappend wmap $x2 $max
1475	lappend wmap $x3 $max
1476	lappend wmap $x4 0.0
1477	}
1478	if { $last == "" \|\| $last != 1.0 } {
1479	lappend wmap 1.0 0.0
1480	}
1481	SendCmd "transfunc define $tf { $cmap } { $wmap }"
1482	}
1483
1484	# ----------------------------------------------------------------------
1485	# CONFIGURATION OPTION: -plotbackground
1486	# ----------------------------------------------------------------------
1487	itcl::configbody Rappture::NanovisViewer::plotbackground {
1488	if { [isconnected] } {
1489	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1490	#fix this!
1491	#SendCmd "color background $r $g $b"
1492	}
1493	}
1494
1495	# ----------------------------------------------------------------------
1496	# CONFIGURATION OPTION: -plotforeground
1497	# ----------------------------------------------------------------------
1498	itcl::configbody Rappture::NanovisViewer::plotforeground {
1499	if { [isconnected] } {
1500	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1501	#fix this!
1502	#SendCmd "color background $r $g $b"
1503	}
1504	}
1505
1506	# ----------------------------------------------------------------------
1507	# CONFIGURATION OPTION: -plotoutline
1508	# ----------------------------------------------------------------------
1509	itcl::configbody Rappture::NanovisViewer::plotoutline {
1510	# Must check if we are connected because this routine is called from the
1511	# class body when the -plotoutline itk_option is defined. At that point
1512	# the NanovisViewer class constructor hasn't been called, so we can't
1513	# start sending commands to visualization server.
1514	if { [isconnected] } {
1515	if {"" == $itk_option(-plotoutline)} {
1516	SendCmd "volume outline state off"
1517	} else {
1518	SendCmd "volume outline state on"
1519	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1520	}
1521	}
1522	}
1523
1524	#
1525	# The -levels option takes a single value that represents the number
1526	# of evenly distributed markers based on the current data range. Each
1527	# marker is a relative value from 0.0 to 1.0.
1528	#
1529	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1530	set c $itk_component(legend)
1531	regsub -all "," $levels " " levels
1532	if {[string is int $levels]} {
1533	for {set i 1} { $i <= $levels } {incr i} {
1534	set x [expr {double($i)/($levels+1)}]
1535	set m [Rappture::IsoMarker \#auto $c $this $tf]
1536	$m relval $x
1537	lappend _isomarkers($tf) $m
1538	}
1539	} else {
1540	foreach x $levels {
1541	set m [Rappture::IsoMarker \#auto $c $this $tf]
1542	$m relval $x
1543	lappend _isomarkers($tf) $m
1544	}
1545	}
1546	}
1547
1548	#
1549	# The -markers option takes a list of zero or more values (the values
1550	# may be separated either by spaces or commas) that have the following
1551	# format:
1552	#
1553	# N% Percent of current total data range. Converted to
1554	# to a relative value between 0.0 and 1.0.
1555	# N Absolute value of marker. If the marker is outside of
1556	# the current range, it will be displayed on the outer
1557	# edge of the legends, but it range it represents will
1558	# not be seen.
1559	#
1560	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1561	set c $itk_component(legend)
1562	regsub -all "," $markers " " markers
1563	foreach marker $markers {
1564	set n [scan $marker "%g%s" value suffix]
1565	if { $n == 2 && $suffix == "%" } {
1566	# ${n}% : Set relative value.
1567	set value [expr {$value * 0.01}]
1568	set m [Rappture::IsoMarker \#auto $c $this $tf]
1569	$m relval $value
1570	lappend _isomarkers($tf) $m
1571	} else {
1572	# ${n} : Set absolute value.
1573	set m [Rappture::IsoMarker \#auto $c $this $tf]
1574	$m absval $value
1575	lappend _isomarkers($tf) $m
1576	}
1577	}
1578	}
1579
1580	# ----------------------------------------------------------------------
1581	# USAGE: UndateTransferFuncs
1582	# ----------------------------------------------------------------------
1583	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1584	$_dispatcher event -idle !send_transfunc
1585	}
1586
1587	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1588	if { $_first == "" } {
1589	error "active transfer function isn't set"
1590	}
1591	set vol [lindex [CurrentVolumes] 0]
1592	set tf $_vol2style($vol)
1593	set c $itk_component(legend)
1594	set m [Rappture::IsoMarker \#auto $c $this $tf]
1595	set w [winfo width $c]
1596	$m relval [expr {double($x-10)/($w-20)}]
1597	lappend _isomarkers($tf) $m
1598	updatetransferfuncs
1599	return 1
1600	}
1601
1602	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1603	set tf [$marker transferfunc]
1604	set bool 0
1605	if { [info exists _isomarkers($tf)] } {
1606	set list {}
1607	set marker [namespace tail $marker]
1608	foreach m $_isomarkers($tf) {
1609	set sx [$m screenpos]
1610	if { $m != $marker } {
1611	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1612	$marker relval [$m relval]
1613	itcl::delete object $m
1614	bell
1615	set bool 1
1616	continue
1617	}
1618	}
1619	lappend list $m
1620	}
1621	set _isomarkers($tf) $list
1622	updatetransferfuncs
1623	}
1624	return $bool
1625	}
1626
1627	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1628	set tf [$marker transferfunc]
1629	if { [info exists _isomarkers($tf)] } {
1630	set marker [namespace tail $marker]
1631	foreach m $_isomarkers($tf) {
1632	set sx [$m screenpos]
1633	if { $m != $marker } {
1634	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1635	$m activate $bool
1636	}
1637	}
1638	}
1639	return ""
1640	}
1641
1642	itcl::body Rappture::NanovisViewer::limits { tf } {
1643	set _limits(min) 0.0
1644	set _limits(max) 1.0
1645	if { ![info exists _style2vols($tf)] } {
1646	return [array get _limits]
1647	}
1648	set min ""; set max ""
1649	foreach vol $_style2vols($tf) {
1650	if { ![info exists _serverVols($vol)] } {
1651	continue
1652	}
1653	if { ![info exists _limits($vol-min)] } {
1654	continue
1655	}
1656	if { $min == "" \|\| $min > $_limits($vol-min) } {
1657	set min $_limits($vol-min)
1658	}
1659	if { $max == "" \|\| $max < $_limits($vol-max) } {
1660	set max $_limits($vol-max)
1661	}
1662	}
1663	if { $min != "" } {
1664	set _limits(min) $min
1665	}
1666	if { $max != "" } {
1667	set _limits(max) $max
1668	}
1669	return [array get _limits]
1670	}
1671
1672
1673	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1674	foreach { key value } {
1675	grid 0
1676	axes 1
1677	outline 1
1678	volume 1
1679	legend 1
1680	particles 1
1681	lic 1
1682	} {
1683	set _settings($this-$key) $value
1684	}
1685
1686	set fg [option get $itk_component(hull) font Font]
1687	#set bfg [option get $itk_component(hull) boldFont Font]
1688
1689	set tab [$itk_component(main) insert end \
1690	-title "View Settings" \
1691	-icon [Rappture::icon wrench]]
1692	blt::scrollset $tab.ss \
1693	-xscrollbar $tab.ss.xs \
1694	-yscrollbar $tab.ss.ys \
1695	-window $tab.ss.frame
1696	pack $tab.ss -fill both -expand yes
1697	blt::tk::scrollbar $tab.ss.xs
1698	blt::tk::scrollbar $tab.ss.ys
1699	set inner [blt::tk::frame $tab.ss.frame]
1700	$inner configure -borderwidth 4
1701
1702	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1703	checkbutton $inner.isosurface \
1704	-text "Isosurface shading" \
1705	-variable [itcl::scope _settings($this-isosurface)] \
1706	-command [itcl::code $this FixSettings isosurface] \
1707	-font "Arial 9"
1708
1709	checkbutton $inner.axes \
1710	-text "Axes" \
1711	-variable [itcl::scope _settings($this-axes)] \
1712	-command [itcl::code $this FixSettings axes] \
1713	-font "Arial 9"
1714
1715	checkbutton $inner.grid \
1716	-text "Grid" \
1717	-variable [itcl::scope _settings($this-grid)] \
1718	-command [itcl::code $this FixSettings grid] \
1719	-font "Arial 9"
1720
1721	checkbutton $inner.outline \
1722	-text "Outline" \
1723	-variable [itcl::scope _settings($this-outline)] \
1724	-command [itcl::code $this FixSettings outline] \
1725	-font "Arial 9"
1726
1727	checkbutton $inner.legend \
1728	-text "Legend" \
1729	-variable [itcl::scope _settings($this-legend)] \
1730	-command [itcl::code $this FixSettings legend] \
1731	-font "Arial 9"
1732
1733	checkbutton $inner.volume \
1734	-text "Volume" \
1735	-variable [itcl::scope _settings($this-volume)] \
1736	-command [itcl::code $this FixSettings volume] \
1737	-font "Arial 9"
1738
1739	blt::table $inner \
1740	0,0 $inner.axes -columnspan 2 -anchor w \
1741	1,0 $inner.grid -columnspan 2 -anchor w \
1742	2,0 $inner.outline -columnspan 2 -anchor w \
1743	3,0 $inner.volume -columnspan 2 -anchor w \
1744	4,0 $inner.legend -columnspan 2 -anchor w
1745
1746	if 0 {
1747	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1748	}
1749	blt::table configure $inner r* -resize none
1750	blt::table configure $inner r5 -resize expand
1751	}
1752
1753	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1754	foreach { key value } {
1755	light 40
1756	transp 50
1757	opacity 100
1758	thickness 350
1759	} {
1760	set _settings($this-$key) $value
1761	}
1762
1763	set tab [$itk_component(main) insert end \
1764	-title "Volume Settings" \
1765	-icon [Rappture::icon volume-on]]
1766	blt::scrollset $tab.ss \
1767	-xscrollbar $tab.ss.xs \
1768	-yscrollbar $tab.ss.ys \
1769	-window $tab.ss.frame
1770	pack $tab.ss -fill both -expand yes
1771	blt::tk::scrollbar $tab.ss.xs
1772	blt::tk::scrollbar $tab.ss.ys
1773	set inner [blt::tk::frame $tab.ss.frame]
1774	$inner configure -borderwidth 4
1775
1776	set fg [option get $itk_component(hull) font Font]
1777	#set bfg [option get $itk_component(hull) boldFont Font]
1778
1779	checkbutton $inner.vol -text "Show volume" -font $fg \
1780	-variable [itcl::scope _settings($this-volume)] \
1781	-command [itcl::code $this FixSettings volume]
1782	label $inner.shading -text "Shading:" -font $fg
1783
1784	label $inner.dim -text "Dim" -font $fg
1785	::scale $inner.light -from 0 -to 100 -orient horizontal \
1786	-variable [itcl::scope _settings($this-light)] \
1787	-width 10 \
1788	-showvalue off -command [itcl::code $this FixSettings light]
1789	label $inner.bright -text "Bright" -font $fg
1790
1791	label $inner.fog -text "Fog" -font $fg
1792	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1793	-variable [itcl::scope _settings($this-transp)] \
1794	-width 10 \
1795	-showvalue off -command [itcl::code $this FixSettings transp]
1796	label $inner.plastic -text "Plastic" -font $fg
1797
1798	label $inner.clear -text "Clear" -font $fg
1799	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1800	-variable [itcl::scope _settings($this-opacity)] \
1801	-width 10 \
1802	-showvalue off -command [itcl::code $this FixSettings opacity]
1803	label $inner.opaque -text "Opaque" -font $fg
1804
1805	label $inner.thin -text "Thin" -font $fg
1806	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1807	-variable [itcl::scope _settings($this-thickness)] \
1808	-width 10 \
1809	-showvalue off -command [itcl::code $this FixSettings thickness]
1810	label $inner.thick -text "Thick" -font $fg
1811
1812	blt::table $inner \
1813	0,0 $inner.vol -columnspan 4 -anchor w -pady 2 \
1814	1,0 $inner.shading -columnspan 4 -anchor w -pady {10 2} \
1815	2,0 $inner.dim -anchor e -pady 2 \
1816	2,1 $inner.light -columnspan 2 -pady 2 -fill x \
1817	2,3 $inner.bright -anchor w -pady 2 \
1818	3,0 $inner.fog -anchor e -pady 2 \
1819	3,1 $inner.transp -columnspan 2 -pady 2 -fill x \
1820	3,3 $inner.plastic -anchor w -pady 2 \
1821	4,0 $inner.clear -anchor e -pady 2 \
1822	4,1 $inner.opacity -columnspan 2 -pady 2 -fill x\
1823	4,3 $inner.opaque -anchor w -pady 2 \
1824	5,0 $inner.thin -anchor e -pady 2 \
1825	5,1 $inner.thickness -columnspan 2 -pady 2 -fill x\
1826	5,3 $inner.thick -anchor w -pady 2
1827
1828	blt::table configure $inner c0 c1 c3 r* -resize none
1829	blt::table configure $inner r6 -resize expand
1830	}
1831
1832	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1833	set tab [$itk_component(main) insert end \
1834	-title "Cutplane Settings" \
1835	-icon [Rappture::icon cutbutton]]
1836	blt::scrollset $tab.ss \
1837	-xscrollbar $tab.ss.xs \
1838	-yscrollbar $tab.ss.ys \
1839	-window $tab.ss.frame
1840	pack $tab.ss -fill both -expand yes
1841	blt::tk::scrollbar $tab.ss.xs
1842	blt::tk::scrollbar $tab.ss.ys
1843	set inner [blt::tk::frame $tab.ss.frame]
1844	$inner configure -borderwidth 4
1845
1846	# X-value slicer...
1847	itk_component add xCutButton {
1848	Rappture::PushButton $inner.xbutton \
1849	-onimage [Rappture::icon x-cutplane] \
1850	-offimage [Rappture::icon x-cutplane] \
1851	-command [itcl::code $this FixSettings xcutplane] \
1852	-variable [itcl::scope _settings($this-xcutplane)]
1853	}
1854	Rappture::Tooltip::for $itk_component(xCutButton) \
1855	"Toggle the X cut plane on/off"
1856
1857	itk_component add xCutScale {
1858	::scale $inner.xval -from 100 -to 0 \
1859	-width 10 -orient vertical -showvalue off \
1860	-borderwidth 1 -highlightthickness 0 \
1861	-command [itcl::code $this Slice move x] \
1862	-variable [itcl::scope _settings($this-xcutposition)]
1863	} {
1864	usual
1865	ignore -borderwidth -highlightthickness
1866	}
1867	# Set the default cutplane value before disabling the scale.
1868	$itk_component(xCutScale) set 50
1869	$itk_component(xCutScale) configure -state disabled
1870	Rappture::Tooltip::for $itk_component(xCutScale) \
1871	"@[itcl::code $this SlicerTip x]"
1872
1873	# Y-value slicer...
1874	itk_component add yCutButton {
1875	Rappture::PushButton $inner.ybutton \
1876	-onimage [Rappture::icon y-cutplane] \
1877	-offimage [Rappture::icon y-cutplane] \
1878	-command [itcl::code $this FixSettings ycutplane] \
1879	-variable [itcl::scope _settings($this-ycutplane)]
1880	}
1881	Rappture::Tooltip::for $itk_component(yCutButton) \
1882	"Toggle the Y cut plane on/off"
1883
1884	itk_component add yCutScale {
1885	::scale $inner.yval -from 100 -to 0 \
1886	-width 10 -orient vertical -showvalue off \
1887	-borderwidth 1 -highlightthickness 0 \
1888	-command [itcl::code $this Slice move y] \
1889	-variable [itcl::scope _settings($this-ycutposition)]
1890	} {
1891	usual
1892	ignore -borderwidth -highlightthickness
1893	}
1894	Rappture::Tooltip::for $itk_component(yCutScale) \
1895	"@[itcl::code $this SlicerTip y]"
1896	# Set the default cutplane value before disabling the scale.
1897	$itk_component(yCutScale) set 50
1898	$itk_component(yCutScale) configure -state disabled
1899
1900	# Z-value slicer...
1901	itk_component add zCutButton {
1902	Rappture::PushButton $inner.zbutton \
1903	-onimage [Rappture::icon z-cutplane] \
1904	-offimage [Rappture::icon z-cutplane] \
1905	-command [itcl::code $this FixSettings zcutplane] \
1906	-variable [itcl::scope _settings($this-zcutplane)]
1907	}
1908	Rappture::Tooltip::for $itk_component(zCutButton) \
1909	"Toggle the Z cut plane on/off"
1910
1911	itk_component add zCutScale {
1912	::scale $inner.zval -from 100 -to 0 \
1913	-width 10 -orient vertical -showvalue off \
1914	-borderwidth 1 -highlightthickness 0 \
1915	-command [itcl::code $this Slice move z] \
1916	-variable [itcl::scope _settings($this-zcutposition)]
1917	} {
1918	usual
1919	ignore -borderwidth -highlightthickness
1920	}
1921	$itk_component(zCutScale) set 50
1922	$itk_component(zCutScale) configure -state disabled
1923	#$itk_component(zCutScale) configure -state disabled
1924	Rappture::Tooltip::for $itk_component(zCutScale) \
1925	"@[itcl::code $this SlicerTip z]"
1926
1927	blt::table $inner \
1928	1,1 $itk_component(xCutButton) \
1929	1,2 $itk_component(yCutButton) \
1930	1,3 $itk_component(zCutButton) \
1931	0,1 $itk_component(xCutScale) \
1932	0,2 $itk_component(yCutScale) \
1933	0,3 $itk_component(zCutScale)
1934
1935	blt::table configure $inner r0 r1 c* -resize none
1936	blt::table configure $inner r2 c4 -resize expand
1937	blt::table configure $inner c0 -width 2
1938	blt::table configure $inner c1 c2 c3 -padx 2
1939	}
1940
1941	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1942	set tab [$itk_component(main) insert end \
1943	-title "Camera Settings" \
1944	-icon [Rappture::icon camera]]
1945	blt::scrollset $tab.ss \
1946	-xscrollbar $tab.ss.xs \
1947	-yscrollbar $tab.ss.ys \
1948	-window $tab.ss.frame
1949	blt::tk::scrollbar $tab.ss.xs
1950	blt::tk::scrollbar $tab.ss.ys
1951	pack $tab.ss -fill both -expand yes
1952	set inner [blt::tk::frame $tab.ss.frame]
1953	$inner configure -borderwidth 4
1954
1955	set labels { phi theta psi pan-x pan-y zoom }
1956	set row 0
1957	foreach tag $labels {
1958	label $inner.${tag}label -text $tag -font "Arial 9"
1959	entry $inner.${tag} -font "Arial 9" -bg white \
1960	-textvariable [itcl::scope _settings($this-$tag)]
1961	bind $inner.${tag} <KeyPress-Return> \
1962	[itcl::code $this camera set ${tag}]
1963	blt::table $inner \
1964	$row,0 $inner.${tag}label -anchor e -pady 2 \
1965	$row,1 $inner.${tag} -anchor w -pady 2
1966	blt::table configure $inner r$row -resize none
1967	incr row
1968	}
1969	blt::table configure $inner c0 c1 -resize none
1970	blt::table configure $inner c2 -resize expand
1971	blt::table configure $inner r$row -resize expand
1972	}
1973
1974
1975	# ----------------------------------------------------------------------
1976	# USAGE: Slice move x\|y\|z <newval>
1977	#
1978	# Called automatically when the user drags the slider to move the
1979	# cut plane that slices 3D data. Gets the current value from the
1980	# slider and moves the cut plane to the appropriate point in the
1981	# data set.
1982	# ----------------------------------------------------------------------
1983	itcl::body Rappture::NanovisViewer::Slice {option args} {
1984	switch -- $option {
1985	move {
1986	if {[llength $args] != 2} {
1987	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1988	}
1989	set axis [lindex $args 0]
1990	set newval [lindex $args 1]
1991
1992	set newpos [expr {0.01*$newval}]
1993	set vols [CurrentVolumes -cutplanes]
1994	SendCmd "cutplane position $newpos $axis $vols"
1995	}
1996	default {
1997	error "bad option \"$option\": should be axis, move, or volume"
1998	}
1999	}
2000	}
2001
2002	# ----------------------------------------------------------------------
2003	# USAGE: SlicerTip <axis>
2004	#
2005	# Used internally to generate a tooltip for the x/y/z slicer controls.
2006	# Returns a message that includes the current slicer value.
2007	# ----------------------------------------------------------------------
2008	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
2009	set val [$itk_component(${axis}CutScale) get]
2010	# set val [expr {0.01*($val-50)
2011	# *($_limits(${axis}max)-$_limits(${axis}min))
2012	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2013	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2014	}
2015
2016
2017	itcl::body Rappture::NanovisViewer::DoResize {} {
2018	SendCmd "screen $_width $_height"
2019	set _resizePending 0
2020	}
2021
2022	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
2023	set _width $w
2024	set _height $h
2025	if { !$_resizePending } {
2026	$_dispatcher event -idle !resize
2027	set _resizePending 1
2028	}
2029	}
2030
2031	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
2032	if { !$_resizeLegendPending } {
2033	$_dispatcher event -idle !legend
2034	set _resizeLegendPending 1
2035	}
2036	}
2037
2038
2039	# camera --
2040	#
2041	itcl::body Rappture::NanovisViewer::camera {option args} {
2042	switch -- $option {
2043	"show" {
2044	puts [array get _view]
2045	}
2046	"set" {
2047	set who [lindex $args 0]
2048	set x $_settings($this-$who)
2049	set code [catch { string is double $x } result]
2050	if { $code != 0 \|\| !$result } {
2051	set _settings($this-$who) $_view($who)
2052	return
2053	}
2054	switch -- $who {
2055	"pan-x" - "pan-y" {
2056	set _view($who) $_settings($this-$who)
2057	PanCamera
2058	}
2059	"phi" - "theta" - "psi" {
2060	set _view($who) $_settings($this-$who)
2061	set xyz [Euler2XYZ $_view(theta) $_view(phi) $_view(psi)]
2062	SendCmd "camera angle $xyz"
2063	}
2064	"zoom" {
2065	set _view($who) $_settings($this-$who)
2066	SendCmd "camera zoom $_view(zoom)"
2067	}
2068	}
2069	}
2070	}
2071	}
2072
2073	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2074	set flowobj ""
2075	foreach key [array names _obj2flow] {
2076	set flowobj $_obj2flow($key)
2077	break
2078	}
2079	if { $flowobj == "" } {
2080	return
2081	}
2082	if { [winfo exists $w.frame] } {
2083	destroy $w.frame
2084	}
2085	set inner [frame $w.frame]
2086	blt::table $w \
2087	5,0 $inner -fill both -columnspan 2 -anchor nw
2088	array set hints [$dataobj hints]
2089
2090	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2091	blt::table $inner \
2092	1,0 $inner.volumes -anchor w \
2093	blt::table configure $inner c0 c1 -resize none
2094	blt::table configure $inner c2 -resize expand
2095
2096	set row 3
2097	set volumes [get]
2098	if { [llength $volumes] > 0 } {
2099	blt::table $inner $row,0 $inner.volumes -anchor w
2100	incr row
2101	}
2102	foreach vol $volumes {
2103	array unset info
2104	array set info $vol
2105	set name $info(name)
2106	if { ![info exists _settings($this-volume-$name)] } {
2107	set _settings($this-volume-$name) $info(hide)
2108	}
2109	checkbutton $inner.vol$row -text $info(label) \
2110	-variable [itcl::scope _settings($this-volume-$name)] \
2111	-onvalue 0 -offvalue 1 \
2112	-command [itcl::code $this volume $key $name] \
2113	-font "Arial 9"
2114	Rappture::Tooltip::for $inner.vol$row $info(description)
2115	blt::table $inner $row,0 $inner.vol$row -anchor w
2116	if { !$_settings($this-volume-$name) } {
2117	$inner.vol$row select
2118	}
2119	incr row
2120	}
2121	blt::table configure $inner r* -resize none
2122	blt::table configure $inner r$row -resize expand
2123	blt::table configure $inner c3 -resize expand
2124	event generate [winfo parent [winfo parent $w]] <Configure>
2125	}
2126
2127	itcl::body Rappture::NanovisViewer::volume { tag name } {
2128	set bool $_settings($this-volume-$name)
2129	SendCmd "volume statue $bool $name"
2130	}
2131
2132
2133	itcl::body Rappture::NanovisViewer::snap { w h } {
2134	if { $w <= 0 \|\| $h <= 0 } {
2135	set w [image width $_image(plot)]
2136	set h [image height $_image(plot)]
2137	}
2138	set img [image create picture -width $w -height $h]
2139	$img resample $_image(plot)
2140	return $img
2141	}
2142
2143	itcl::body Rappture::NanovisViewer::AddImageControls { inner widget } {
2144	label $inner.size_l -text "Size:" -font "Arial 9"
2145	set _downloadPopup(image_controls) $inner
2146	set img $_image(plot)
2147	set res "[image width $img]x[image height $img]"
2148	Rappture::Combobox $inner.size -width 30 -editable no
2149	$inner.size choices insert end \
2150	"draft" "Draft ($res)"
2151
2152	label $inner.bgcolor_l -text "Background:" -font "Arial 9"
2153	Rappture::Combobox $inner.bgcolor -width 30 -editable no
2154	$inner.bgcolor choices insert end \
2155	"black" "Black" \
2156	"white" "White" \
2157	"none" "Transparent (PNG only)"
2158
2159	label $inner.format_l -text "Format:" -font "Arial 9"
2160	Rappture::Combobox $inner.format -width 30 -editable no
2161	$inner.format choices insert end \
2162	"png" "PNG (Portable Network Graphics format)" \
2163	"jpg" "JPEG (Joint Photographic Experts Group format)" \
2164	"gif" "GIF (GIF Graphics Interchange Format)"
2165
2166	button $inner.go -text [Rappture::filexfer::label download] \
2167	-command [itcl::code $this SetWaitVariable 1]
2168
2169	blt::table $inner \
2170	0,0 $inner.format_l -anchor e \
2171	0,1 $inner.format -anchor w -fill x \
2172	1,0 $inner.size_l -anchor e \
2173	1,1 $inner.size -anchor w -fill x \
2174	2,0 $inner.bgcolor_l -anchor e \
2175	2,1 $inner.bgcolor -anchor w -fill x \
2176	6,0 $inner.go -cspan 2 -pady 5
2177	$inner.bgcolor value "Black"
2178	$inner.size value "Draft ($res)"
2179	$inner.format value "PNG (Portable Network Graphics format)"
2180	}

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