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source: branches/1.3/gui/scripts/nanovisviewer.tcl @ 4399

Last change on this file since 4399 was 4399, checked in by gah, 10 years ago
fix builder path, update isosurfaceviewer
File size: 75.1 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2
3	# ----------------------------------------------------------------------
4	# COMPONENT: nanovisviewer - 3D volume rendering
5	#
6	# This widget performs volume rendering on 3D scalar/vector datasets.
7	# It connects to the Nanovis server running on a rendering farm,
8	# transmits data, and displays the results.
9	# ======================================================================
10	# AUTHOR: Michael McLennan, Purdue University
11	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
12	#
13	# See the file "license.terms" for information on usage and
14	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
15	# ======================================================================
16	package require Itk
17	package require BLT
18	package require Img
19
20	#
21	# FIXME:
22	# Need to Add DX readers this client to examine the data before
23	# it's sent to the server. This will eliminate 90% of the insanity in
24	# computing the limits of all the volumes. I can rip out all the
25	# "receive data" "send transfer function" event crap.
26	#
27	# This means we can compute the transfer function (relative values) and
28	# draw the legend min/max values without waiting for the information to
29	# come from the server. This will also prevent the flashing that occurs
30	# when a new volume is drawn (using the default transfer function) and
31	# then when the correct transfer function has been sent and linked to
32	# the volume.
33	#
34	option add *NanovisViewer.width 4i widgetDefault
35	option add NanovisViewercursor crosshair widgetDefault
36	option add *NanovisViewer.height 4i widgetDefault
37	option add *NanovisViewer.foreground black widgetDefault
38	option add *NanovisViewer.controlBackground gray widgetDefault
39	option add *NanovisViewer.controlDarkBackground #999999 widgetDefault
40	option add *NanovisViewer.plotBackground black widgetDefault
41	option add *NanovisViewer.plotForeground white widgetDefault
42	option add *NanovisViewer.plotOutline gray widgetDefault
43	option add *NanovisViewer.font \
44	--helvetica-medium-r-normal--12-* widgetDefault
45
46	# must use this name -- plugs into Rappture::resources::load
47	proc NanovisViewer_init_resources {} {
48	Rappture::resources::register \
49	nanovis_server Rappture::NanovisViewer::SetServerList
50	}
51
52	itcl::class Rappture::NanovisViewer {
53	inherit Rappture::VisViewer
54
55	itk_option define -plotforeground plotForeground Foreground ""
56	itk_option define -plotbackground plotBackground Background ""
57	itk_option define -plotoutline plotOutline PlotOutline ""
58
59	constructor { hostlist args } {
60	Rappture::VisViewer::constructor $hostlist
61	} {
62	# defined below
63	}
64	destructor {
65	# defined below
66	}
67	public proc SetServerList { namelist } {
68	Rappture::VisViewer::SetServerList "nanovis" $namelist
69	}
70	public method add {dataobj {settings ""}}
71	public method camera {option args}
72	public method delete {args}
73	public method disconnect {}
74	public method download {option args}
75	public method get {args}
76	public method isconnected {}
77	public method limits { tf }
78	public method overmarker { m x }
79	public method parameters {title args} {
80	# do nothing
81	}
82	public method rmdupmarker { m x }
83	public method scale {args}
84	public method updatetransferfuncs {}
85
86	protected method Connect {}
87	protected method CurrentDatasets {{what -all}}
88	protected method Disconnect {}
89	protected method DoResize {}
90	protected method FixLegend {}
91	protected method AdjustSetting {what {value ""}}
92	protected method InitSettings { args }
93	protected method Pan {option x y}
94	protected method Rebuild {}
95	protected method ReceiveData { args }
96	protected method ReceiveImage { args }
97	protected method ReceiveLegend { tf vmin vmax size }
98	protected method Rotate {option x y}
99	protected method SendTransferFuncs {}
100	protected method Slice {option args}
101	protected method SlicerTip {axis}
102	protected method Zoom {option}
103
104	# The following methods are only used by this class.
105	private method AddIsoMarker { x y }
106	private method BuildCameraTab {}
107	private method BuildCutplanesTab {}
108	private method BuildViewTab {}
109	private method BuildVolumeTab {}
110	private method ResetColormap { color }
111	private method ComputeTransferFunc { tf }
112	private method EventuallyResize { w h }
113	private method EventuallyResizeLegend { }
114	private method NameTransferFunc { dataobj comp }
115	private method PanCamera {}
116	private method ParseLevelsOption { tf levels }
117	private method ParseMarkersOption { tf markers }
118	private method volume { tag name }
119	private method GetVolumeInfo { w }
120	private method SetOrientation { side }
121
122	private variable _arcball ""
123
124	private variable _dlist "" ;# list of data objects
125	private variable _allDataObjs
126	private variable _obj2ovride ;# maps dataobj => style override
127	private variable _serverDatasets ;# contains all the dataobj-component
128	;# to volumes in the server
129	private variable _serverTfs ;# contains all the transfer functions
130	;# in the server.
131	private variable _recvdDatasets ;# list of data objs to send to server
132	private variable _dataset2style ;# maps dataobj-component to transfunc
133	private variable _style2datasets ;# maps tf back to list of
134	# dataobj-components using the tf.
135
136	private variable _reset 1; # Connection to server has been reset
137	private variable _click ;# info used for rotate operations
138	private variable _limits ;# autoscale min/max for all axes
139	private variable _view ;# view params for 3D view
140	private variable _isomarkers ;# array of isosurface level values 0..1
141	private variable _settings
142	# Array of transfer functions in server. If 0 the transfer has been
143	# defined but not loaded. If 1 the transfer function has been named
144	# and loaded.
145	private variable _activeTfs
146	private variable _first "" ;# This is the topmost volume.
147	private variable _alphamap
148
149	# This
150	# indicates which isomarkers and transfer
151	# function to use when changing markers,
152	# opacity, or thickness.
153	common _downloadPopup ;# download options from popup
154	private common _hardcopy
155	private variable _width 0
156	private variable _height 0
157	private variable _resizePending 0
158	private variable _resizeLegendPending 0
159	}
160
161	itk::usual NanovisViewer {
162	keep -background -foreground -cursor -font
163	keep -plotbackground -plotforeground
164	}
165
166	# ----------------------------------------------------------------------
167	# CONSTRUCTOR
168	# ----------------------------------------------------------------------
169	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
170	set _serverType "nanovis"
171
172	# Draw legend event
173	$_dispatcher register !legend
174	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
175
176	# Send transfer functions event
177	$_dispatcher register !send_transfunc
178	$_dispatcher dispatch $this !send_transfunc \
179	"[itcl::code $this SendTransferFuncs]; list"
180
181	# Rebuild event
182	$_dispatcher register !rebuild
183	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
184
185	# Resize event
186	$_dispatcher register !resize
187	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
188
189	#
190	# Populate parser with commands handle incoming requests
191	#
192	$_parser alias image [itcl::code $this ReceiveImage]
193	$_parser alias legend [itcl::code $this ReceiveLegend]
194	$_parser alias data [itcl::code $this ReceiveData]
195
196	# Initialize the view to some default parameters.
197	array set _view {
198	qw 0.853553
199	qx -0.353553
200	qy 0.353553
201	qz 0.146447
202	zoom 1.0
203	xpan 0
204	ypan 0
205	}
206	set _arcball [blt::arcball create 100 100]
207	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
208	$_arcball quaternion $q
209
210	set _limits(vmin) 0.0
211	set _limits(vmax) 1.0
212	set _reset 1
213
214	array set _settings [subst {
215	$this-qw $_view(qw)
216	$this-qx $_view(qx)
217	$this-qy $_view(qy)
218	$this-qz $_view(qz)
219	$this-zoom $_view(zoom)
220	$this-xpan $_view(xpan)
221	$this-ypan $_view(ypan)
222	$this-volume 1
223	$this-xcutplane 0
224	$this-xcutposition 0
225	$this-ycutplane 0
226	$this-ycutposition 0
227	$this-zcutplane 0
228	$this-zcutposition 0
229	}]
230
231	itk_component add 3dview {
232	label $itk_component(plotarea).view -image $_image(plot) \
233	-highlightthickness 0 -borderwidth 0
234	} {
235	usual
236	ignore -highlightthickness -borderwidth -background
237	}
238	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
239
240	set f [$itk_component(main) component controls]
241	itk_component add reset {
242	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
243	-highlightthickness 0 \
244	-image [Rappture::icon reset-view] \
245	-command [itcl::code $this Zoom reset]
246	} {
247	usual
248	ignore -highlightthickness
249	}
250	pack $itk_component(reset) -side top -padx 2 -pady 2
251	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
252
253	itk_component add zoomin {
254	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
255	-highlightthickness 0 \
256	-image [Rappture::icon zoom-in] \
257	-command [itcl::code $this Zoom in]
258	} {
259	usual
260	ignore -highlightthickness
261	}
262	pack $itk_component(zoomin) -side top -padx 2 -pady 2
263	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
264
265	itk_component add zoomout {
266	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
267	-highlightthickness 0 \
268	-image [Rappture::icon zoom-out] \
269	-command [itcl::code $this Zoom out]
270	} {
271	usual
272	ignore -highlightthickness
273	}
274	pack $itk_component(zoomout) -side top -padx 2 -pady 2
275	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
276
277	itk_component add volume {
278	Rappture::PushButton $f.volume \
279	-onimage [Rappture::icon volume-on] \
280	-offimage [Rappture::icon volume-off] \
281	-command [itcl::code $this AdjustSetting volume] \
282	-variable [itcl::scope _settings($this-volume)]
283	}
284	$itk_component(volume) select
285	Rappture::Tooltip::for $itk_component(volume) \
286	"Toggle the volume cloud on/off"
287	pack $itk_component(volume) -padx 2 -pady 2
288
289	if { [catch {
290	BuildViewTab
291	BuildVolumeTab
292	BuildCutplanesTab
293	BuildCameraTab
294	} errs] != 0 } {
295	global errorInfo
296	puts stderr "errs=$errs errorInfo=$errorInfo"
297	}
298
299	# Legend
300
301	set _image(legend) [image create photo]
302	itk_component add legend {
303	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
304	} {
305	usual
306	ignore -highlightthickness
307	rename -background -plotbackground plotBackground Background
308	}
309	bind $itk_component(legend) <Configure> \
310	[itcl::code $this EventuallyResizeLegend]
311
312	# Hack around the Tk panewindow. The problem is that the requested
313	# size of the 3d view isn't set until an image is retrieved from
314	# the server. So the panewindow uses the tiny size.
315	set w 10000
316	pack forget $itk_component(3dview)
317	blt::table $itk_component(plotarea) \
318	0,0 $itk_component(3dview) -fill both -reqwidth $w \
319	1,0 $itk_component(legend) -fill x
320	blt::table configure $itk_component(plotarea) r1 -resize none
321
322	# Bindings for rotation via mouse
323	bind $itk_component(3dview) <ButtonPress-1> \
324	[itcl::code $this Rotate click %x %y]
325	bind $itk_component(3dview) <B1-Motion> \
326	[itcl::code $this Rotate drag %x %y]
327	bind $itk_component(3dview) <ButtonRelease-1> \
328	[itcl::code $this Rotate release %x %y]
329	bind $itk_component(3dview) <Configure> \
330	[itcl::code $this EventuallyResize %w %h]
331
332	# Bindings for panning via mouse
333	bind $itk_component(3dview) <ButtonPress-2> \
334	[itcl::code $this Pan click %x %y]
335	bind $itk_component(3dview) <B2-Motion> \
336	[itcl::code $this Pan drag %x %y]
337	bind $itk_component(3dview) <ButtonRelease-2> \
338	[itcl::code $this Pan release %x %y]
339
340	# Bindings for panning via keyboard
341	bind $itk_component(3dview) <KeyPress-Left> \
342	[itcl::code $this Pan set -10 0]
343	bind $itk_component(3dview) <KeyPress-Right> \
344	[itcl::code $this Pan set 10 0]
345	bind $itk_component(3dview) <KeyPress-Up> \
346	[itcl::code $this Pan set 0 -10]
347	bind $itk_component(3dview) <KeyPress-Down> \
348	[itcl::code $this Pan set 0 10]
349	bind $itk_component(3dview) <Shift-KeyPress-Left> \
350	[itcl::code $this Pan set -2 0]
351	bind $itk_component(3dview) <Shift-KeyPress-Right> \
352	[itcl::code $this Pan set 2 0]
353	bind $itk_component(3dview) <Shift-KeyPress-Up> \
354	[itcl::code $this Pan set 0 -2]
355	bind $itk_component(3dview) <Shift-KeyPress-Down> \
356	[itcl::code $this Pan set 0 2]
357
358	# Bindings for zoom via keyboard
359	bind $itk_component(3dview) <KeyPress-Prior> \
360	[itcl::code $this Zoom out]
361	bind $itk_component(3dview) <KeyPress-Next> \
362	[itcl::code $this Zoom in]
363
364	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
365
366	if {[string equal "x11" [tk windowingsystem]]} {
367	# Bindings for zoom via mouse
368	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
369	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
370	}
371
372	set _image(download) [image create photo]
373
374	eval itk_initialize $args
375
376	Connect
377	}
378
379	# ----------------------------------------------------------------------
380	# DESTRUCTOR
381	# ----------------------------------------------------------------------
382	itcl::body Rappture::NanovisViewer::destructor {} {
383	$_dispatcher cancel !rebuild
384	$_dispatcher cancel !send_transfunc
385	$_dispatcher cancel !resize
386	image delete $_image(plot)
387	image delete $_image(legend)
388	image delete $_image(download)
389	catch { blt::arcball destroy $_arcball }
390	array unset _settings $this-*
391	}
392
393	# ----------------------------------------------------------------------
394	# USAGE: add <dataobj> ?<settings>?
395	#
396	# Clients use this to add a data object to the plot. The optional
397	# <settings> are used to configure the plot. Allowed settings are
398	# -color, -brightness, -width, -linestyle, and -raise.
399	# ----------------------------------------------------------------------
400	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
401	if { ![$dataobj isvalid] } {
402	return; # Object doesn't contain valid data.
403	}
404	array set params {
405	-color auto
406	-width 1
407	-linestyle solid
408	-brightness 0
409	-raise 0
410	-description ""
411	-param ""
412	}
413	array set params $settings
414
415	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
416	# can't handle -autocolors yet
417	set params(-color) black
418	}
419	set pos [lsearch -exact $_dlist $dataobj]
420	if {$pos < 0} {
421	lappend _dlist $dataobj
422	set _allDataObjs($dataobj) 1
423	set _obj2ovride($dataobj-color) $params(-color)
424	set _obj2ovride($dataobj-width) $params(-width)
425	set _obj2ovride($dataobj-raise) $params(-raise)
426	$_dispatcher event -idle !rebuild
427	}
428	}
429
430	# ----------------------------------------------------------------------
431	# USAGE: get ?-objects?
432	# USAGE: get ?-image 3dview\|legend?
433	#
434	# Clients use this to query the list of objects being plotted, in
435	# order from bottom to top of this result. The optional "-image"
436	# flag can also request the internal images being shown.
437	# ----------------------------------------------------------------------
438	itcl::body Rappture::NanovisViewer::get {args} {
439	if {[llength $args] == 0} {
440	set args "-objects"
441	}
442
443	set op [lindex $args 0]
444	switch -- $op {
445	-objects {
446	# put the dataobj list in order according to -raise options
447	set dlist $_dlist
448	foreach obj $dlist {
449	if {[info exists _obj2ovride($obj-raise)] && $_obj2ovride($obj-raise)} {
450	set i [lsearch -exact $dlist $obj]
451	if {$i >= 0} {
452	set dlist [lreplace $dlist $i $i]
453	lappend dlist $obj
454	}
455	}
456	}
457	return $dlist
458	}
459	-image {
460	if {[llength $args] != 2} {
461	error "wrong # args: should be \"get -image 3dview\|legend\""
462	}
463	switch -- [lindex $args end] {
464	3dview {
465	return $_image(plot)
466	}
467	legend {
468	return $_image(legend)
469	}
470	default {
471	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
472	}
473	}
474	}
475	default {
476	error "bad option \"$op\": should be -objects or -image"
477	}
478	}
479	}
480
481	# ----------------------------------------------------------------------
482	# USAGE: delete ?<dataobj1> <dataobj2> ...?
483	#
484	# Clients use this to delete a dataobj from the plot. If no dataobjs
485	# are specified, then all dataobjs are deleted. No data objects are
486	# deleted. They are only removed from the display list.
487	#
488	# ----------------------------------------------------------------------
489	itcl::body Rappture::NanovisViewer::delete {args} {
490	if {[llength $args] == 0} {
491	set args $_dlist
492	}
493	# Delete all specified dataobjs
494	set changed 0
495	foreach dataobj $args {
496	set pos [lsearch -exact $_dlist $dataobj]
497	if { $pos >= 0 } {
498	set _dlist [lreplace $_dlist $pos $pos]
499	array unset _limits $dataobj*
500	array unset _obj2ovride $dataobj-*
501	set changed 1
502	}
503	}
504	# If anything changed, then rebuild the plot
505	if {$changed} {
506	$_dispatcher event -idle !rebuild
507	}
508	}
509
510	# ----------------------------------------------------------------------
511	# USAGE: scale ?<data1> <data2> ...?
512	#
513	# Sets the default limits for the overall plot according to the
514	# limits of the data for all of the given <data> objects. This
515	# accounts for all objects--even those not showing on the screen.
516	# Because of this, the limits are appropriate for all objects as
517	# the user scans through data in the ResultSet viewer.
518	# ----------------------------------------------------------------------
519	itcl::body Rappture::NanovisViewer::scale {args} {
520	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
521	set _limits($val) ""
522	}
523	foreach dataobj $args {
524	if { ![$dataobj isvalid] } {
525	continue; # Object doesn't contain valid data.
526	}
527	foreach axis {x y z v} {
528	foreach { min max } [$dataobj limits $axis] break
529	if {"" != $min && "" != $max} {
530	if {"" == $_limits(${axis}min)} {
531	set _limits(${axis}min) $min
532	set _limits(${axis}max) $max
533	} else {
534	if {$min < $_limits(${axis}min)} {
535	set _limits(${axis}min) $min
536	}
537	if {$max > $_limits(${axis}max)} {
538	set _limits(${axis}max) $max
539	}
540	}
541	}
542	}
543	}
544	}
545
546	# ----------------------------------------------------------------------
547	# USAGE: download coming
548	# USAGE: download controls <downloadCommand>
549	# USAGE: download now
550	#
551	# Clients use this method to create a downloadable representation
552	# of the plot. Returns a list of the form {ext string}, where
553	# "ext" is the file extension (indicating the type of data) and
554	# "string" is the data itself.
555	# ----------------------------------------------------------------------
556	itcl::body Rappture::NanovisViewer::download {option args} {
557	switch $option {
558	coming {
559	if {[catch {
560	blt::winop snap $itk_component(plotarea) $_image(download)
561	}]} {
562	$_image(download) configure -width 1 -height 1
563	$_image(download) put #000000
564	}
565	}
566	controls {
567	# no controls for this download yet
568	return ""
569	}
570	now {
571	# Get the image data (as base64) and decode it back to binary.
572	# This is better than writing to temporary files. When we switch
573	# to the BLT picture image it won't be necessary to decode the
574	# image data.
575	if { [image width $_image(plot)] > 0 &&
576	[image height $_image(plot)] > 0 } {
577	set bytes [$_image(plot) data -format "jpeg -quality 100"]
578	set bytes [Rappture::encoding::decode -as b64 $bytes]
579	return [list .jpg $bytes]
580	}
581	return ""
582	}
583	default {
584	error "bad option \"$option\": should be coming, controls, now"
585	}
586	}
587	}
588
589	# ----------------------------------------------------------------------
590	# USAGE: Connect ?<host:port>,<host:port>...?
591	#
592	# Clients use this method to establish a connection to a new
593	# server, or to reestablish a connection to the previous server.
594	# Any existing connection is automatically closed.
595	# ----------------------------------------------------------------------
596	itcl::body Rappture::NanovisViewer::Connect {} {
597	set _hosts [GetServerList "nanovis"]
598	if { "" == $_hosts } {
599	return 0
600	}
601	set _reset 1
602	set result [VisViewer::Connect $_hosts]
603	if { $result } {
604	if { $_reportClientInfo } {
605	# Tell the server the viewer, hub, user and session.
606	# Do this immediately on connect before buffing any commands
607	global env
608
609	set info {}
610	set user "???"
611	if { [info exists env(USER)] } {
612	set user $env(USER)
613	}
614	set session "???"
615	if { [info exists env(SESSION)] } {
616	set session $env(SESSION)
617	}
618	lappend info "hub" [exec hostname]
619	lappend info "client" "nanovisviewer"
620	lappend info "user" $user
621	lappend info "session" $session
622	SendCmd "clientinfo [list $info]"
623	}
624
625	set w [winfo width $itk_component(3dview)]
626	set h [winfo height $itk_component(3dview)]
627	EventuallyResize $w $h
628	}
629	return $result
630	}
631
632	#
633	# isconnected --
634	#
635	# Indicates if we are currently connected to the visualization server.
636	#
637	itcl::body Rappture::NanovisViewer::isconnected {} {
638	return [VisViewer::IsConnected]
639	}
640
641	#
642	# disconnect --
643	#
644	itcl::body Rappture::NanovisViewer::disconnect {} {
645	Disconnect
646	}
647
648	#
649	# Disconnect --
650	#
651	# Clients use this method to disconnect from the current rendering
652	# server.
653	#
654	itcl::body Rappture::NanovisViewer::Disconnect {} {
655	VisViewer::Disconnect
656
657	# disconnected -- no more data sitting on server
658	array unset _serverDatasets
659	}
660
661	# ----------------------------------------------------------------------
662	# USAGE: SendTransferFuncs
663	# ----------------------------------------------------------------------
664	itcl::body Rappture::NanovisViewer::SendTransferFuncs {} {
665	if { $_first == "" } {
666	puts stderr "first not set"
667	return
668	}
669	# Ensure that the global opacity and thickness settings (in the slider
670	# settings widgets) are used for the active transfer-function. Update
671	# the values in the _settings varible.
672	set opacity [expr { double($_settings($this-opacity)) * 0.01 }]
673	# Scale values between 0.00001 and 0.01000
674	set thickness [expr {double($_settings($this-thickness)) * 0.0001}]
675
676	foreach tag [CurrentDatasets] {
677	if { ![info exists _serverDatasets($tag)] \|\| !$_serverDatasets($tag) } {
678	# The volume hasn't reached the server yet. How did we get
679	# here?
680	puts stderr "Don't have $tag in _serverDatasets"
681	continue
682	}
683	if { ![info exists _dataset2style($tag)] } {
684	puts stderr "don't have style for volume $tag"
685	continue; # How does this happen?
686	}
687	set tf $_dataset2style($tag)
688	set _settings($this-$tf-opacity) $opacity
689	set _settings($this-$tf-thickness) $thickness
690	ComputeTransferFunc $tf
691	# FIXME: Need to the send information as to what transfer functions
692	# to update so that we only update the transfer function
693	# as necessary. Right now, all transfer functions are
694	# updated. This makes moving the isomarker slider chunky.
695	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
696	set _activeTfs($tf) 1
697	}
698	SendCmd "volume shading transfunc $tf $tag"
699	}
700	FixLegend
701	}
702
703	# ----------------------------------------------------------------------
704	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
705	#
706	# Invoked automatically whenever the "image" command comes in from
707	# the rendering server. Indicates that binary image data with the
708	# specified <size> will follow.
709	# ----------------------------------------------------------------------
710	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
711	array set info {
712	-token "???"
713	-bytes 0
714	-type image
715	}
716	array set info $args
717	set bytes [ReceiveBytes $info(-bytes)]
718	ReceiveEcho <<line "<read $info(-bytes) bytes"
719	if { $info(-type) == "image" } {
720	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
721	$_image(plot) configure -data $bytes
722	} elseif { $info(-type) == "print" } {
723	set tag $this-print-$info(-token)
724	set _hardcopy($tag) $bytes
725	}
726	}
727
728	#
729	# ReceiveLegend --
730	#
731	# The procedure is the response from the render server to each "legend"
732	# command. The server sends back a "legend" command invoked our
733	# the slave interpreter. The purpose is to collect data of the image
734	# representing the legend in the canvas. In addition, the isomarkers
735	# of the active transfer function are displayed.
736	#
737	# I don't know is this is the right place to display the isomarkers.
738	# I don't know all the different paths used to draw the plot. There's
739	# "Rebuild", "add", etc.
740	#
741	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
742	if { ![isconnected] } {
743	return
744	}
745	set bytes [ReceiveBytes $size]
746	$_image(legend) configure -data $bytes
747	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
748	puts stderr "vmin=$vmin vmax=$vmax"
749	set c $itk_component(legend)
750	set w [winfo width $c]
751	set h [winfo height $c]
752	set lx 10
753	set ly [expr {$h - 1}]
754	if {"" == [$c find withtag transfunc]} {
755	$c create image 10 10 -anchor nw \
756	-image $_image(legend) -tags transfunc
757	$c create text $lx $ly -anchor sw \
758	-fill $itk_option(-plotforeground) -tags "limits vmin"
759	$c create text [expr {$w-$lx}] $ly -anchor se \
760	-fill $itk_option(-plotforeground) -tags "limits vmax"
761	$c lower transfunc
762	$c bind transfunc <ButtonRelease-1> \
763	[itcl::code $this AddIsoMarker %x %y]
764	}
765	# Display the markers used by the active transfer function.
766
767	array set limits [limits $tf]
768	$c itemconfigure vmin -text [format %g $limits(min)]
769	$c coords vmin $lx $ly
770
771	$c itemconfigure vmax -text [format %g $limits(max)]
772	$c coords vmax [expr {$w-$lx}] $ly
773
774	if { [info exists _isomarkers($tf)] } {
775	foreach m $_isomarkers($tf) {
776	$m visible yes
777	}
778	}
779
780	# The colormap may have changed. Resync the slicers with the colormap.
781	set datasets [CurrentDatasets -cutplanes]
782	SendCmd "volume data state $_settings($this-volume) $datasets"
783
784	# Adjust the cutplane for only the first component in the topmost volume
785	# (i.e. the first volume designated in the field).
786	set tag [lindex $datasets 0]
787	foreach axis {x y z} {
788	# Turn off cutplanes for all volumes
789	SendCmd "cutplane state 0 $axis"
790	if { $_settings($this-${axis}cutplane) } {
791	# Turn on cutplane for this particular volume and set the position
792	SendCmd "cutplane state 1 $axis $tag"
793	set pos [expr {0.01*$_settings($this-${axis}cutposition)}]
794	SendCmd "cutplane position $pos $axis $tag"
795	}
796	}
797	}
798
799	#
800	# ReceiveData --
801	#
802	# The procedure is the response from the render server to each "data
803	# follows" command. The server sends back a "data" command invoked our
804	# the slave interpreter. The purpose is to collect the min/max of the
805	# volume sent to the render server. Since the client (nanovisviewer)
806	# doesn't parse 3D data formats, we rely on the server (nanovis) to
807	# tell us what the limits are. Once we've received the limits to all
808	# the data we've sent (tracked by _recvdDatasets) we can then determine
809	# what the transfer functions are for these volumes.
810	#
811	#
812	# Note: There is a considerable tradeoff in having the server report
813	# back what the data limits are. It means that much of the code
814	# having to do with transfer-functions has to wait for the data
815	# to come back, since the isomarkers are calculated based upon
816	# the data limits. The client code is much messier because of
817	# this. The alternative is to parse any of the 3D formats on the
818	# client side.
819	#
820	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
821	if { ![isconnected] } {
822	return
823	}
824
825	# Arguments from server are name value pairs. Stuff them in an array.
826	array set info $args
827
828	set tag $info(tag)
829	set parts [split $tag -]
830
831	#
832	# Volumes don't exist until we're told about them.
833	#
834	set dataobj [lindex $parts 0]
835	set _serverDatasets($tag) 1
836	if { $_settings($this-volume) && $dataobj == $_first } {
837	SendCmd "volume state 1 $tag"
838	}
839	set _limits($tag-min) $info(min); # Minimum value of the volume.
840	set _limits($tag-max) $info(max); # Maximum value of the volume.
841	set _limits(vmin) $info(vmin); # Overall minimum value.
842	set _limits(vmax) $info(vmax); # Overall maximum value.
843
844	unset _recvdDatasets($tag)
845	if { [array size _recvdDatasets] == 0 } {
846	# The active transfer function is by default the first component of
847	# the first data object. This assumes that the data is always
848	# successfully transferred.
849	updatetransferfuncs
850	}
851	}
852
853	# ----------------------------------------------------------------------
854	# USAGE: Rebuild
855	#
856	# Called automatically whenever something changes that affects the
857	# data in the widget. Clears any existing data and rebuilds the
858	# widget to display new data.
859	# ----------------------------------------------------------------------
860	itcl::body Rappture::NanovisViewer::Rebuild {} {
861	set w [winfo width $itk_component(3dview)]
862	set h [winfo height $itk_component(3dview)]
863	if { $w < 2 \|\| $h < 2 } {
864	$_dispatcher event -idle !rebuild
865	return
866	}
867
868	# Turn on buffering of commands to the server. We don't want to
869	# be preempted by a server disconnect/reconnect (which automatically
870	# generates a new call to Rebuild).
871	StartBufferingCommands
872
873	# Hide all the isomarkers. Can't remove them. Have to remember the
874	# settings since the user may have created/deleted/moved markers.
875
876	foreach tf [array names _isomarkers] {
877	foreach m $_isomarkers($tf) {
878	$m visible no
879	}
880	}
881
882	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
883	set _width $w
884	set _height $h
885	$_arcball resize $w $h
886	DoResize
887	}
888	foreach dataobj [get] {
889	foreach cname [$dataobj components] {
890	set tag $dataobj-$cname
891	if { ![info exists _serverDatasets($tag)] } {
892	# Send the data as one huge base64-encoded mess -- yuck!
893	if { [$dataobj type] == "dx" } {
894	if { ![$dataobj isvalid] } {
895	puts stderr "??? $dataobj is invalid"
896	}
897	set data [$dataobj values $cname]
898	} else {
899	set data [$dataobj vtkdata $cname]
900	if 0 {
901	set f [open "/tmp/volume.vtk" "w"]
902	puts $f $data
903	close $f
904	}
905	}
906	set nbytes [string length $data]
907	if { $_reportClientInfo } {
908	set info {}
909	lappend info "tool_id" [$dataobj hints toolId]
910	lappend info "tool_name" [$dataobj hints toolName]
911	lappend info "tool_version" [$dataobj hints toolRevision]
912	lappend info "tool_title" [$dataobj hints toolTitle]
913	lappend info "dataset_label" [$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 styles {
1002	-cutplanes 1
1003	}
1004	array set styles [lindex [$_first components -style $cname] 0]
1005	if { $what != "-cutplanes" \|\| $styles(-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 styles {
1332	-color BCGYR
1333	-levels 6
1334	-opacity 1.0
1335	-markers ""
1336	}
1337	set tag $dataobj-$cname
1338	array set styles [lindex [$dataobj components -style $cname] 0]
1339	set tf "$styles(-color):$styles(-levels):$styles(-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 styles {
1356	-color BCGYR
1357	-levels 6
1358	-opacity 1.0
1359	-markers ""
1360	-alphamap ""
1361	}
1362
1363	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1364	array set styles [lindex [$dataobj components -style $cname] 0]
1365
1366	# We have to parse the style attributes for a volume using this
1367	# transfer-function once. This sets up the initial isomarkers for the
1368	# transfer function. The user may add/delete markers, so we have to
1369	# maintain a list of markers for each transfer-function. We use the one
1370	# of the volumes (the first in the list) using the transfer-function as a
1371	# reference.
1372	#
1373	# FIXME: The current way we generate transfer-function names completely
1374	# ignores the -markers option. The problem is that we are forced
1375	# to compute the name from an increasing complex set of values:
1376	# color, levels, marker, opacity. I think the cow's out of the
1377	# barn on this one.
1378
1379	if { ![info exists _isomarkers($tf)] } {
1380	# Have to defer creation of isomarkers until we have data limits
1381	if { [info exists styles(-markers)] &&
1382	[llength $styles(-markers)] > 0 } {
1383	ParseMarkersOption $tf $styles(-markers)
1384	} else {
1385	ParseLevelsOption $tf $styles(-levels)
1386	}
1387	if { $styles(-alphamap) != "" } {
1388	set _alphamap($cname) $styles(-alphamap)
1389	}
1390	}
1391	set cmap [ColorsToColormap $styles(-color)]
1392	set tag $this-$tf
1393	if { ![info exists _settings($tag-opacity)] } {
1394	set _settings($tag-opacity) $styles(-opacity)
1395	}
1396	set max 1.0 ;#$_settings($tag-opacity)
1397
1398	set isovalues {}
1399	foreach m $_isomarkers($tf) {
1400	lappend isovalues [$m relval]
1401	}
1402	# Sort the isovalues
1403	set isovalues [lsort -real $isovalues]
1404
1405	if { ![info exists _settings($tag-thickness)]} {
1406	set _settings($tag-thickness) 0.005
1407	}
1408	set delta $_settings($tag-thickness)
1409
1410	set first [lindex $isovalues 0]
1411	set last [lindex $isovalues end]
1412	set wmap ""
1413	if { $first == "" \|\| $first != 0.0 } {
1414	lappend wmap 0.0 0.0
1415	}
1416	foreach x $isovalues {
1417	set x1 [expr {$x-$delta-0.00001}]
1418	set x2 [expr {$x-$delta}]
1419	set x3 [expr {$x+$delta}]
1420	set x4 [expr {$x+$delta+0.00001}]
1421	if { $x1 < 0.0 } {
1422	set x1 0.0
1423	} elseif { $x1 > 1.0 } {
1424	set x1 1.0
1425	}
1426	if { $x2 < 0.0 } {
1427	set x2 0.0
1428	} elseif { $x2 > 1.0 } {
1429	set x2 1.0
1430	}
1431	if { $x3 < 0.0 } {
1432	set x3 0.0
1433	} elseif { $x3 > 1.0 } {
1434	set x3 1.0
1435	}
1436	if { $x4 < 0.0 } {
1437	set x4 0.0
1438	} elseif { $x4 > 1.0 } {
1439	set x4 1.0
1440	}
1441	# add spikes in the middle
1442	lappend wmap $x1 0.0
1443	lappend wmap $x2 $max
1444	lappend wmap $x3 $max
1445	lappend wmap $x4 0.0
1446	}
1447	if { $last == "" \|\| $last != 1.0 } {
1448	lappend wmap 1.0 0.0
1449	}
1450	if { [info exists _alphamap($cname)] } {
1451	set wmap $_alphamap($cname)
1452	}
1453	puts stderr wmap=$wmap
1454	SendCmd [list transfunc define $tf $cmap $wmap]
1455	}
1456
1457	# ----------------------------------------------------------------------
1458	# CONFIGURATION OPTION: -plotbackground
1459	# ----------------------------------------------------------------------
1460	itcl::configbody Rappture::NanovisViewer::plotbackground {
1461	if { [isconnected] } {
1462	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1463	#fix this!
1464	#SendCmd "color background $r $g $b"
1465	}
1466	}
1467
1468	# ----------------------------------------------------------------------
1469	# CONFIGURATION OPTION: -plotforeground
1470	# ----------------------------------------------------------------------
1471	itcl::configbody Rappture::NanovisViewer::plotforeground {
1472	if { [isconnected] } {
1473	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1474	#fix this!
1475	#SendCmd "color background $r $g $b"
1476	}
1477	}
1478
1479	# ----------------------------------------------------------------------
1480	# CONFIGURATION OPTION: -plotoutline
1481	# ----------------------------------------------------------------------
1482	itcl::configbody Rappture::NanovisViewer::plotoutline {
1483	# Must check if we are connected because this routine is called from the
1484	# class body when the -plotoutline itk_option is defined. At that point
1485	# the NanovisViewer class constructor hasn't been called, so we can't
1486	# start sending commands to visualization server.
1487	if { [isconnected] } {
1488	if {"" == $itk_option(-plotoutline)} {
1489	SendCmd "volume outline state off"
1490	} else {
1491	SendCmd "volume outline state on"
1492	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1493	}
1494	}
1495	}
1496
1497	#
1498	# The -levels option takes a single value that represents the number
1499	# of evenly distributed markers based on the current data range. Each
1500	# marker is a relative value from 0.0 to 1.0.
1501	#
1502	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1503	set c $itk_component(legend)
1504	regsub -all "," $levels " " levels
1505	if {[string is int $levels]} {
1506	for {set i 1} { $i <= $levels } {incr i} {
1507	set x [expr {double($i)/($levels+1)}]
1508	set m [Rappture::IsoMarker \#auto $c $this $tf]
1509	$m relval $x
1510	lappend _isomarkers($tf) $m
1511	}
1512	} else {
1513	foreach x $levels {
1514	set m [Rappture::IsoMarker \#auto $c $this $tf]
1515	$m relval $x
1516	lappend _isomarkers($tf) $m
1517	}
1518	}
1519	}
1520
1521	#
1522	# The -markers option takes a list of zero or more values (the values
1523	# may be separated either by spaces or commas) that have the following
1524	# format:
1525	#
1526	# N% Percent of current total data range. Converted to
1527	# to a relative value between 0.0 and 1.0.
1528	# N Absolute value of marker. If the marker is outside of
1529	# the current range, it will be displayed on the outer
1530	# edge of the legends, but it range it represents will
1531	# not be seen.
1532	#
1533	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1534	set c $itk_component(legend)
1535	regsub -all "," $markers " " markers
1536	foreach marker $markers {
1537	set n [scan $marker "%g%s" value suffix]
1538	if { $n == 2 && $suffix == "%" } {
1539	# ${n}% : Set relative value.
1540	set value [expr {$value * 0.01}]
1541	set m [Rappture::IsoMarker \#auto $c $this $tf]
1542	$m relval $value
1543	lappend _isomarkers($tf) $m
1544	} else {
1545	# ${n} : Set absolute value.
1546	set m [Rappture::IsoMarker \#auto $c $this $tf]
1547	$m absval $value
1548	lappend _isomarkers($tf) $m
1549	}
1550	}
1551	}
1552
1553	# ----------------------------------------------------------------------
1554	# USAGE: UndateTransferFuncs
1555	# ----------------------------------------------------------------------
1556	itcl::body Rappture::NanovisViewer::updatetransferfuncs {} {
1557	$_dispatcher event -idle !send_transfunc
1558	}
1559
1560	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1561	if { $_first == "" } {
1562	error "active transfer function isn't set"
1563	}
1564	set tag [lindex [CurrentDatasets] 0]
1565	set tf $_dataset2style($tag)
1566	set c $itk_component(legend)
1567	set m [Rappture::IsoMarker \#auto $c $this $tf]
1568	set w [winfo width $c]
1569	$m relval [expr {double($x-10)/($w-20)}]
1570	lappend _isomarkers($tf) $m
1571	updatetransferfuncs
1572	return 1
1573	}
1574
1575	itcl::body Rappture::NanovisViewer::rmdupmarker { marker x } {
1576	set tf [$marker transferfunc]
1577	set bool 0
1578	if { [info exists _isomarkers($tf)] } {
1579	set list {}
1580	set marker [namespace tail $marker]
1581	foreach m $_isomarkers($tf) {
1582	set sx [$m screenpos]
1583	if { $m != $marker } {
1584	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1585	$marker relval [$m relval]
1586	itcl::delete object $m
1587	bell
1588	set bool 1
1589	continue
1590	}
1591	}
1592	lappend list $m
1593	}
1594	set _isomarkers($tf) $list
1595	updatetransferfuncs
1596	}
1597	return $bool
1598	}
1599
1600	itcl::body Rappture::NanovisViewer::overmarker { marker x } {
1601	set tf [$marker transferfunc]
1602	if { [info exists _isomarkers($tf)] } {
1603	set marker [namespace tail $marker]
1604	foreach m $_isomarkers($tf) {
1605	set sx [$m screenpos]
1606	if { $m != $marker } {
1607	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1608	$m activate $bool
1609	}
1610	}
1611	}
1612	return ""
1613	}
1614
1615	itcl::body Rappture::NanovisViewer::limits { tf } {
1616	set _limits(min) 0.0
1617	set _limits(max) 1.0
1618	if { ![info exists _style2datasets($tf)] } {
1619	return [array get _limits]
1620	}
1621	set min ""; set max ""
1622	foreach tag $_style2datasets($tf) {
1623	if { ![info exists _serverDatasets($tag)] } {
1624	continue
1625	}
1626	if { ![info exists _limits($tag-min)] } {
1627	continue
1628	}
1629	if { $min == "" \|\| $min > $_limits($tag-min) } {
1630	set min $_limits($tag-min)
1631	}
1632	if { $max == "" \|\| $max < $_limits($tag-max) } {
1633	set max $_limits($tag-max)
1634	}
1635	}
1636	if { $min != "" } {
1637	set _limits(min) $min
1638	}
1639	if { $max != "" } {
1640	set _limits(max) $max
1641	}
1642	return [array get _limits]
1643	}
1644
1645
1646	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1647	foreach { key value } {
1648	grid 0
1649	axes 1
1650	outline 0
1651	volume 1
1652	legend 1
1653	particles 1
1654	lic 1
1655	} {
1656	set _settings($this-$key) $value
1657	}
1658
1659	set fg [option get $itk_component(hull) font Font]
1660	#set bfg [option get $itk_component(hull) boldFont Font]
1661
1662	set inner [$itk_component(main) insert end \
1663	-title "View Settings" \
1664	-icon [Rappture::icon wrench]]
1665	$inner configure -borderwidth 4
1666
1667	set ::Rappture::NanovisViewer::_settings($this-isosurface) 0
1668	checkbutton $inner.isosurface \
1669	-text "Isosurface shading" \
1670	-variable [itcl::scope _settings($this-isosurface)] \
1671	-command [itcl::code $this AdjustSetting isosurface] \
1672	-font "Arial 9"
1673
1674	checkbutton $inner.axes \
1675	-text "Axes" \
1676	-variable [itcl::scope _settings($this-axes)] \
1677	-command [itcl::code $this AdjustSetting axes] \
1678	-font "Arial 9"
1679
1680	checkbutton $inner.grid \
1681	-text "Grid" \
1682	-variable [itcl::scope _settings($this-grid)] \
1683	-command [itcl::code $this AdjustSetting grid] \
1684	-font "Arial 9"
1685
1686	checkbutton $inner.outline \
1687	-text "Outline" \
1688	-variable [itcl::scope _settings($this-outline)] \
1689	-command [itcl::code $this AdjustSetting outline] \
1690	-font "Arial 9"
1691
1692	checkbutton $inner.legend \
1693	-text "Legend" \
1694	-variable [itcl::scope _settings($this-legend)] \
1695	-command [itcl::code $this AdjustSetting legend] \
1696	-font "Arial 9"
1697
1698	checkbutton $inner.volume \
1699	-text "Volume" \
1700	-variable [itcl::scope _settings($this-volume)] \
1701	-command [itcl::code $this AdjustSetting volume] \
1702	-font "Arial 9"
1703
1704	blt::table $inner \
1705	0,0 $inner.axes -cspan 2 -anchor w \
1706	1,0 $inner.grid -cspan 2 -anchor w \
1707	2,0 $inner.outline -cspan 2 -anchor w \
1708	3,0 $inner.volume -cspan 2 -anchor w \
1709	4,0 $inner.legend -cspan 2 -anchor w
1710
1711	if 0 {
1712	bind $inner <Map> [itcl::code $this GetVolumeInfo $inner]
1713	}
1714	blt::table configure $inner r* -resize none
1715	blt::table configure $inner r5 -resize expand
1716	}
1717
1718	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1719	foreach { key value } {
1720	light2side 1
1721	light 40
1722	transp 50
1723	opacity 100
1724	thickness 350
1725	} {
1726	set _settings($this-$key) $value
1727	}
1728
1729	set inner [$itk_component(main) insert end \
1730	-title "Volume Settings" \
1731	-icon [Rappture::icon volume-on]]
1732	$inner configure -borderwidth 4
1733
1734	set fg [option get $itk_component(hull) font Font]
1735	#set bfg [option get $itk_component(hull) boldFont Font]
1736
1737	checkbutton $inner.vol -text "Show volume" -font $fg \
1738	-variable [itcl::scope _settings($this-volume)] \
1739	-command [itcl::code $this AdjustSetting volume]
1740	label $inner.shading -text "Shading:" -font $fg
1741
1742	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1743	-variable [itcl::scope _settings($this-light2side)] \
1744	-command [itcl::code $this AdjustSetting light2side]
1745
1746	label $inner.dim -text "Glow" -font $fg
1747	::scale $inner.light -from 0 -to 100 -orient horizontal \
1748	-variable [itcl::scope _settings($this-light)] \
1749	-width 10 \
1750	-showvalue off -command [itcl::code $this AdjustSetting light]
1751	label $inner.bright -text "Surface" -font $fg
1752
1753	label $inner.fog -text "Clear" -font $fg
1754	::scale $inner.transp -from 0 -to 100 -orient horizontal \
1755	-variable [itcl::scope _settings($this-transp)] \
1756	-width 10 \
1757	-showvalue off -command [itcl::code $this AdjustSetting transp]
1758	label $inner.plastic -text "Opaque" -font $fg
1759
1760	label $inner.clear -text "Clear" -font $fg
1761	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1762	-variable [itcl::scope _settings($this-opacity)] \
1763	-width 10 \
1764	-showvalue off -command [itcl::code $this AdjustSetting opacity]
1765	label $inner.opaque -text "Opaque" -font $fg
1766
1767	label $inner.thin -text "Thin" -font $fg
1768	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1769	-variable [itcl::scope _settings($this-thickness)] \
1770	-width 10 \
1771	-showvalue off -command [itcl::code $this AdjustSetting thickness]
1772	label $inner.thick -text "Thick" -font $fg
1773
1774	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1775	itk_component add colormap {
1776	Rappture::Combobox $inner.colormap -width 10 -editable no
1777	}
1778
1779	$inner.colormap choices insert end \
1780	"BCGYR" "BCGYR" \
1781	"BGYOR" "BGYOR" \
1782	"blue" "blue" \
1783	"blue-to-brown" "blue-to-brown" \
1784	"blue-to-orange" "blue-to-orange" \
1785	"blue-to-grey" "blue-to-grey" \
1786	"green-to-magenta" "green-to-magenta" \
1787	"greyscale" "greyscale" \
1788	"nanohub" "nanohub" \
1789	"rainbow" "rainbow" \
1790	"spectral" "spectral" \
1791	"ROYGB" "ROYGB" \
1792	"RYGCB" "RYGCB" \
1793	"brown-to-blue" "brown-to-blue" \
1794	"grey-to-blue" "grey-to-blue" \
1795	"orange-to-blue" "orange-to-blue" \
1796	"none" "none"
1797
1798	$itk_component(colormap) value "BCGYR"
1799	bind $inner.colormap <<Value>> \
1800	[itcl::code $this AdjustSetting colormap]
1801
1802	blt::table $inner \
1803	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1804	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1805	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1806	3,0 $inner.dim -anchor e -pady 2 \
1807	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1808	3,3 $inner.bright -anchor w -pady 2 \
1809	4,0 $inner.fog -anchor e -pady 2 \
1810	4,1 $inner.transp -cspan 2 -pady 2 -fill x \
1811	4,3 $inner.plastic -anchor w -pady 2 \
1812	5,0 $inner.thin -anchor e -pady 2 \
1813	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1814	5,3 $inner.thick -anchor w -pady 2
1815
1816	blt::table configure $inner c0 c1 c3 r* -resize none
1817	blt::table configure $inner r6 -resize expand
1818	}
1819
1820	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1821	set inner [$itk_component(main) insert end \
1822	-title "Cutplane Settings" \
1823	-icon [Rappture::icon cutbutton]]
1824	$inner configure -borderwidth 4
1825
1826	# X-value slicer...
1827	itk_component add xCutButton {
1828	Rappture::PushButton $inner.xbutton \
1829	-onimage [Rappture::icon x-cutplane] \
1830	-offimage [Rappture::icon x-cutplane] \
1831	-command [itcl::code $this AdjustSetting xcutplane] \
1832	-variable [itcl::scope _settings($this-xcutplane)]
1833	}
1834	Rappture::Tooltip::for $itk_component(xCutButton) \
1835	"Toggle the X cut plane on/off"
1836
1837	itk_component add xCutScale {
1838	::scale $inner.xval -from 100 -to 0 \
1839	-width 10 -orient vertical -showvalue off \
1840	-borderwidth 1 -highlightthickness 0 \
1841	-command [itcl::code $this Slice move x] \
1842	-variable [itcl::scope _settings($this-xcutposition)]
1843	} {
1844	usual
1845	ignore -borderwidth -highlightthickness
1846	}
1847	# Set the default cutplane value before disabling the scale.
1848	$itk_component(xCutScale) set 50
1849	$itk_component(xCutScale) configure -state disabled
1850	Rappture::Tooltip::for $itk_component(xCutScale) \
1851	"@[itcl::code $this SlicerTip x]"
1852
1853	# Y-value slicer...
1854	itk_component add yCutButton {
1855	Rappture::PushButton $inner.ybutton \
1856	-onimage [Rappture::icon y-cutplane] \
1857	-offimage [Rappture::icon y-cutplane] \
1858	-command [itcl::code $this AdjustSetting ycutplane] \
1859	-variable [itcl::scope _settings($this-ycutplane)]
1860	}
1861	Rappture::Tooltip::for $itk_component(yCutButton) \
1862	"Toggle the Y cut plane on/off"
1863
1864	itk_component add yCutScale {
1865	::scale $inner.yval -from 100 -to 0 \
1866	-width 10 -orient vertical -showvalue off \
1867	-borderwidth 1 -highlightthickness 0 \
1868	-command [itcl::code $this Slice move y] \
1869	-variable [itcl::scope _settings($this-ycutposition)]
1870	} {
1871	usual
1872	ignore -borderwidth -highlightthickness
1873	}
1874	Rappture::Tooltip::for $itk_component(yCutScale) \
1875	"@[itcl::code $this SlicerTip y]"
1876	# Set the default cutplane value before disabling the scale.
1877	$itk_component(yCutScale) set 50
1878	$itk_component(yCutScale) configure -state disabled
1879
1880	# Z-value slicer...
1881	itk_component add zCutButton {
1882	Rappture::PushButton $inner.zbutton \
1883	-onimage [Rappture::icon z-cutplane] \
1884	-offimage [Rappture::icon z-cutplane] \
1885	-command [itcl::code $this AdjustSetting zcutplane] \
1886	-variable [itcl::scope _settings($this-zcutplane)]
1887	}
1888	Rappture::Tooltip::for $itk_component(zCutButton) \
1889	"Toggle the Z cut plane on/off"
1890
1891	itk_component add zCutScale {
1892	::scale $inner.zval -from 100 -to 0 \
1893	-width 10 -orient vertical -showvalue off \
1894	-borderwidth 1 -highlightthickness 0 \
1895	-command [itcl::code $this Slice move z] \
1896	-variable [itcl::scope _settings($this-zcutposition)]
1897	} {
1898	usual
1899	ignore -borderwidth -highlightthickness
1900	}
1901	$itk_component(zCutScale) set 50
1902	$itk_component(zCutScale) configure -state disabled
1903	#$itk_component(zCutScale) configure -state disabled
1904	Rappture::Tooltip::for $itk_component(zCutScale) \
1905	"@[itcl::code $this SlicerTip z]"
1906
1907	blt::table $inner \
1908	1,1 $itk_component(xCutButton) \
1909	1,2 $itk_component(yCutButton) \
1910	1,3 $itk_component(zCutButton) \
1911	0,1 $itk_component(xCutScale) \
1912	0,2 $itk_component(yCutScale) \
1913	0,3 $itk_component(zCutScale)
1914
1915	blt::table configure $inner r0 r1 c* -resize none
1916	blt::table configure $inner r2 c4 -resize expand
1917	blt::table configure $inner c0 -width 2
1918	blt::table configure $inner c1 c2 c3 -padx 2
1919	}
1920
1921	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1922	set inner [$itk_component(main) insert end \
1923	-title "Camera Settings" \
1924	-icon [Rappture::icon camera]]
1925	$inner configure -borderwidth 4
1926
1927	label $inner.view_l -text "view" -font "Arial 9"
1928	set f [frame $inner.view]
1929	foreach side { front back left right top bottom } {
1930	button $f.$side -image [Rappture::icon view$side] \
1931	-command [itcl::code $this SetOrientation $side]
1932	Rappture::Tooltip::for $f.$side "Change the view to $side"
1933	pack $f.$side -side left
1934	}
1935
1936	blt::table $inner \
1937	0,0 $inner.view_l -anchor e -pady 2 \
1938	0,1 $inner.view -anchor w -pady 2
1939
1940	set row 1
1941	set labels { qw qx qy qz xpan ypan zoom }
1942	foreach tag $labels {
1943	label $inner.${tag}label -text $tag -font "Arial 9"
1944	entry $inner.${tag} -font "Arial 9" -bg white \
1945	-textvariable [itcl::scope _settings($this-$tag)]
1946	bind $inner.${tag} <Return> \
1947	[itcl::code $this camera set ${tag}]
1948	bind $inner.${tag} <KP_Enter> \
1949	[itcl::code $this camera set ${tag}]
1950	blt::table $inner \
1951	$row,0 $inner.${tag}label -anchor e -pady 2 \
1952	$row,1 $inner.${tag} -anchor w -pady 2
1953	blt::table configure $inner r$row -resize none
1954	incr row
1955	}
1956
1957	blt::table configure $inner c* r* -resize none
1958	blt::table configure $inner c2 -resize expand
1959	blt::table configure $inner r$row -resize expand
1960	}
1961
1962	# ----------------------------------------------------------------------
1963	# USAGE: Slice move x\|y\|z <newval>
1964	#
1965	# Called automatically when the user drags the slider to move the
1966	# cut plane that slices 3D data. Gets the current value from the
1967	# slider and moves the cut plane to the appropriate point in the
1968	# data set.
1969	# ----------------------------------------------------------------------
1970	itcl::body Rappture::NanovisViewer::Slice {option args} {
1971	switch -- $option {
1972	move {
1973	if {[llength $args] != 2} {
1974	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1975	}
1976	set axis [lindex $args 0]
1977	set newval [lindex $args 1]
1978
1979	set newpos [expr {0.01*$newval}]
1980	set datasets [CurrentDatasets -cutplanes]
1981	set tag [lindex $datasets 0]
1982	SendCmd "cutplane position $newpos $axis $tag"
1983	}
1984	default {
1985	error "bad option \"$option\": should be axis, move, or volume"
1986	}
1987	}
1988	}
1989
1990	# ----------------------------------------------------------------------
1991	# USAGE: SlicerTip <axis>
1992	#
1993	# Used internally to generate a tooltip for the x/y/z slicer controls.
1994	# Returns a message that includes the current slicer value.
1995	# ----------------------------------------------------------------------
1996	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
1997	set val [$itk_component(${axis}CutScale) get]
1998	# set val [expr {0.01*($val-50)
1999	# *($_limits(${axis}max)-$_limits(${axis}min))
2000	# + 0.5*($_limits(${axis}max)+$_limits(${axis}min))}]
2001	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2002	}
2003
2004
2005	itcl::body Rappture::NanovisViewer::DoResize {} {
2006	$_arcball resize $_width $_height
2007	SendCmd "screen size $_width $_height"
2008	set _resizePending 0
2009	}
2010
2011	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
2012	set _width $w
2013	set _height $h
2014	$_arcball resize $w $h
2015	if { !$_resizePending } {
2016	$_dispatcher event -idle !resize
2017	set _resizePending 1
2018	}
2019	}
2020
2021	itcl::body Rappture::NanovisViewer::EventuallyResizeLegend {} {
2022	if { !$_resizeLegendPending } {
2023	$_dispatcher event -idle !legend
2024	set _resizeLegendPending 1
2025	}
2026	}
2027
2028	# camera --
2029	#
2030	itcl::body Rappture::NanovisViewer::camera {option args} {
2031	switch -- $option {
2032	"show" {
2033	puts [array get _view]
2034	}
2035	"set" {
2036	set who [lindex $args 0]
2037	set x $_settings($this-$who)
2038	set code [catch { string is double $x } result]
2039	if { $code != 0 \|\| !$result } {
2040	set _settings($this-$who) $_view($who)
2041	return
2042	}
2043	switch -- $who {
2044	"xpan" - "ypan" {
2045	set _view($who) $_settings($this-$who)
2046	PanCamera
2047	}
2048	"qx" - "qy" - "qz" - "qw" {
2049	set _view($who) $_settings($this-$who)
2050	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2051	$_arcball quaternion $q
2052	SendCmd "camera orient $q"
2053	}
2054	"zoom" {
2055	set _view($who) $_settings($this-$who)
2056	SendCmd "camera zoom $_view(zoom)"
2057	}
2058	}
2059	}
2060	}
2061	}
2062
2063	itcl::body Rappture::NanovisViewer::GetVolumeInfo { w } {
2064	set flowobj ""
2065	foreach key [array names _obj2flow] {
2066	set flowobj $_obj2flow($key)
2067	break
2068	}
2069	if { $flowobj == "" } {
2070	return
2071	}
2072	if { [winfo exists $w.frame] } {
2073	destroy $w.frame
2074	}
2075	set inner [frame $w.frame]
2076	blt::table $w \
2077	5,0 $inner -fill both -cspan 2 -anchor nw
2078	array set hints [$dataobj hints]
2079
2080	label $inner.volumes -text "Volumes" -font "Arial 9 bold"
2081	blt::table $inner \
2082	1,0 $inner.volumes -anchor w \
2083	blt::table configure $inner c0 c1 -resize none
2084	blt::table configure $inner c2 -resize expand
2085
2086	set row 3
2087	set volumes [get]
2088	if { [llength $volumes] > 0 } {
2089	blt::table $inner $row,0 $inner.volumes -anchor w
2090	incr row
2091	}
2092	foreach vol $volumes {
2093	array unset info
2094	array set info $vol
2095	set name $info(name)
2096	if { ![info exists _settings($this-volume-$name)] } {
2097	set _settings($this-volume-$name) $info(hide)
2098	}
2099	checkbutton $inner.vol$row -text $info(label) \
2100	-variable [itcl::scope _settings($this-volume-$name)] \
2101	-onvalue 0 -offvalue 1 \
2102	-command [itcl::code $this volume $key $name] \
2103	-font "Arial 9"
2104	Rappture::Tooltip::for $inner.vol$row $info(description)
2105	blt::table $inner $row,0 $inner.vol$row -anchor w
2106	if { !$_settings($this-volume-$name) } {
2107	$inner.vol$row select
2108	}
2109	incr row
2110	}
2111	blt::table configure $inner r* -resize none
2112	blt::table configure $inner r$row -resize expand
2113	blt::table configure $inner c3 -resize expand
2114	event generate [winfo parent [winfo parent $w]] <Configure>
2115	}
2116
2117	itcl::body Rappture::NanovisViewer::volume { tag name } {
2118	set bool $_settings($this-volume-$name)
2119	SendCmd "volume statue $bool $name"
2120	}
2121
2122	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2123	array set positions {
2124	front "1 0 0 0"
2125	back "0 0 1 0"
2126	left "0.707107 0 -0.707107 0"
2127	right "0.707107 0 0.707107 0"
2128	top "0.707107 -0.707107 0 0"
2129	bottom "0.707107 0.707107 0 0"
2130	}
2131	foreach name { qw qx qy qz } value $positions($side) {
2132	set _view($name) $value
2133	}
2134	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2135	$_arcball quaternion $q
2136	SendCmd "camera orient $q"
2137	SendCmd "camera reset"
2138	set _view(xpan) 0
2139	set _view(ypan) 0
2140	set _view(zoom) 1.0
2141	set _settings($this-xpan) $_view(xpan)
2142	set _settings($this-ypan) $_view(ypan)
2143	set _settings($this-zoom) $_view(zoom)
2144	}
2145

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