Context Navigation

source: branches/1.3/gui/scripts/nanovisviewer.tcl @ 5565

Last change on this file since 5565 was 5565, checked in by ldelgass, 9 years ago
Merge r5526:5527 from trunk (vtk download for flow/nanovis viewers)
File size: 76.4 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: nanovisviewer - 3D volume rendering
4	#
5	# This widget performs volume rendering on 3D scalar/vector datasets.
6	# It connects to the Nanovis server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	package require Img
18
19	option add *NanovisViewer.width 4i widgetDefault
20	option add NanovisViewercursor crosshair widgetDefault
21	option add *NanovisViewer.height 4i widgetDefault
22	option add *NanovisViewer.foreground black widgetDefault
23	option add *NanovisViewer.controlBackground gray widgetDefault
24	option add *NanovisViewer.controlDarkBackground #999999 widgetDefault
25	option add *NanovisViewer.plotBackground black widgetDefault
26	option add *NanovisViewer.plotForeground white widgetDefault
27	option add *NanovisViewer.plotOutline gray widgetDefault
28	option add *NanovisViewer.font \
29	--helvetica-medium-r-normal--12-* widgetDefault
30
31	# must use this name -- plugs into Rappture::resources::load
32	proc NanovisViewer_init_resources {} {
33	Rappture::resources::register \
34	nanovis_server Rappture::NanovisViewer::SetServerList
35	}
36
37	itcl::class Rappture::NanovisViewer {
38	inherit Rappture::VisViewer
39
40	itk_option define -plotforeground plotForeground Foreground ""
41	itk_option define -plotbackground plotBackground Background ""
42	itk_option define -plotoutline plotOutline PlotOutline ""
43
44	constructor { hostlist args } {
45	Rappture::VisViewer::constructor $hostlist
46	} {
47	# defined below
48	}
49	destructor {
50	# defined below
51	}
52	public proc SetServerList { namelist } {
53	Rappture::VisViewer::SetServerList "nanovis" $namelist
54	}
55	public method add {dataobj {settings ""}}
56	public method camera {option args}
57	public method delete {args}
58	public method disconnect {}
59	public method download {option args}
60	public method get {args}
61	public method isconnected {}
62	public method limits { tf }
63	public method overMarker { m x }
64	public method parameters {title args} {
65	# do nothing
66	}
67	public method removeDuplicateMarker { m x }
68	public method scale {args}
69	public method updateTransferFunctions {}
70
71	# The following methods are only used by this class.
72	private method AddIsoMarker { x y }
73	private method AdjustSetting {what {value ""}}
74	private method BuildCameraTab {}
75	private method BuildCutplanesTab {}
76	private method BuildDownloadPopup { widget command }
77	private method BuildViewTab {}
78	private method BuildVolumeTab {}
79	private method ComputeTransferFunction { tf }
80	private method Connect {}
81	private method CurrentDatasets {{what -all}}
82	private method Disconnect {}
83	private method DoResize {}
84	private method DrawLegend { tf }
85	private method EventuallyRedrawLegend { }
86	private method EventuallyResize { w h }
87	private method FixLegend {}
88	private method GetImage { args }
89	private method GetVtkData { args }
90	private method InitSettings { args }
91	private method NameTransferFunction { dataobj comp }
92	private method Pan {option x y}
93	private method PanCamera {}
94	private method ParseLevelsOption { tf levels }
95	private method ParseMarkersOption { tf markers }
96	private method QuaternionToView { q } {
97	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
98	}
99	private method Rebuild {}
100	private method ReceiveData { args }
101	private method ReceiveImage { args }
102	private method ReceiveLegend { tf vmin vmax size }
103	private method ResetColormap { color }
104	private method Rotate {option x y}
105	private method SendTransferFunctions {}
106	private method SetOrientation { side }
107	private method Slice {option args}
108	private method SlicerTip {axis}
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115	private variable _dlist "" ;# list of data objects
116	private variable _obj2ovride ;# maps dataobj => style override
117	private variable _serverDatasets ;# contains all the dataobj-component
118	;# to volumes in the server
119	private variable _recvdDatasets ;# list of data objs to send to server
120	private variable _dataset2style ;# maps dataobj-component to transfunc
121	private variable _style2datasets ;# maps tf back to list of
122	# dataobj-components using the tf.
123
124	private variable _reset 1 ;# Connection to server has been reset.
125	private variable _click ;# Info used for rotate operations.
126	private variable _limits ;# Autoscale min/max for all axes
127	private variable _view ;# View params for 3D view
128	private variable _isomarkers ;# array of isosurface level values 0..1
129	# Array of transfer functions in server. If 0 the transfer has been
130	# defined but not loaded. If 1 the transfer function has been named
131	# and loaded.
132	private variable _activeTfs
133	private variable _settings
134	private variable _first "" ;# This is the topmost volume.
135	private variable _width 0
136	private variable _height 0
137	private variable _resizePending 0
138	private variable _resizeLegendPending 0
139
140	private common _downloadPopup ;# download options from popup
141	private common _hardcopy
142	}
143
144	itk::usual NanovisViewer {
145	keep -background -foreground -cursor -font
146	keep -plotbackground -plotforeground
147	}
148
149	# ----------------------------------------------------------------------
150	# CONSTRUCTOR
151	# ----------------------------------------------------------------------
152	itcl::body Rappture::NanovisViewer::constructor {hostlist args} {
153	set _serverType "nanovis"
154
155	# Draw legend event
156	$_dispatcher register !legend
157	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
158
159	# Send transfer functions event
160	$_dispatcher register !send_transfunc
161	$_dispatcher dispatch $this !send_transfunc \
162	"[itcl::code $this SendTransferFunctions]; list"
163
164	# Rebuild event
165	$_dispatcher register !rebuild
166	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
167
168	# Resize event
169	$_dispatcher register !resize
170	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
171
172	#
173	# Populate parser with commands handle incoming requests
174	#
175	$_parser alias image [itcl::code $this ReceiveImage]
176	$_parser alias legend [itcl::code $this ReceiveLegend]
177	$_parser alias data [itcl::code $this ReceiveData]
178
179	# Initialize the view to some default parameters.
180	array set _view {
181	-qw 0.853553
182	-qx -0.353553
183	-qy 0.353553
184	-qz 0.146447
185	-xpan 0
186	-ypan 0
187	-zoom 1.0
188	}
189	set _arcball [blt::arcball create 100 100]
190	$_arcball quaternion [ViewToQuaternion]
191
192	set _limits(vmin) 0.0
193	set _limits(vmax) 1.0
194	set _reset 1
195
196	array set _settings [subst {
197	-axesvisible 1
198	-background black
199	-colormap "BCGYR"
200	-cutplanesvisible 0
201	-gridvisible 0
202	-isosurfaceshading 0
203	-legendvisible 1
204	-light 40
205	-light2side 1
206	-opacity 50
207	-outlinevisible 0
208	-qw $_view(-qw)
209	-qx $_view(-qx)
210	-qy $_view(-qy)
211	-qz $_view(-qz)
212	-thickness 350
213	-volume 1
214	-xcutplaneposition 50
215	-xcutplanevisible 0
216	-xpan $_view(-xpan)
217	-ycutplaneposition 50
218	-ycutplanevisible 0
219	-ypan $_view(-ypan)
220	-zcutplaneposition 50
221	-zcutplanevisible 0
222	-zoom $_view(-zoom)
223	}]
224
225	itk_component add 3dview {
226	label $itk_component(plotarea).view -image $_image(plot) \
227	-highlightthickness 0 -borderwidth 0
228	} {
229	usual
230	ignore -highlightthickness -borderwidth -background
231	}
232	bind $itk_component(3dview) <Control-F1> [itcl::code $this ToggleConsole]
233
234	set f [$itk_component(main) component controls]
235	itk_component add reset {
236	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
237	-highlightthickness 0 \
238	-image [Rappture::icon reset-view] \
239	-command [itcl::code $this Zoom reset]
240	} {
241	usual
242	ignore -highlightthickness
243	}
244	pack $itk_component(reset) -side top -padx 2 -pady 2
245	Rappture::Tooltip::for $itk_component(reset) \
246	"Reset the view to the default zoom level"
247
248	itk_component add zoomin {
249	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
250	-highlightthickness 0 \
251	-image [Rappture::icon zoom-in] \
252	-command [itcl::code $this Zoom in]
253	} {
254	usual
255	ignore -highlightthickness
256	}
257	pack $itk_component(zoomin) -side top -padx 2 -pady 2
258	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
259
260	itk_component add zoomout {
261	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
262	-highlightthickness 0 \
263	-image [Rappture::icon zoom-out] \
264	-command [itcl::code $this Zoom out]
265	} {
266	usual
267	ignore -highlightthickness
268	}
269	pack $itk_component(zoomout) -side top -padx 2 -pady 2
270	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
271
272	itk_component add volume {
273	Rappture::PushButton $f.volume \
274	-onimage [Rappture::icon volume-on] \
275	-offimage [Rappture::icon volume-off] \
276	-command [itcl::code $this AdjustSetting -volume] \
277	-variable [itcl::scope _settings(-volume)]
278	}
279	$itk_component(volume) select
280	Rappture::Tooltip::for $itk_component(volume) \
281	"Toggle the volume cloud on/off"
282	pack $itk_component(volume) -padx 2 -pady 2
283
284	itk_component add cutplane {
285	Rappture::PushButton $f.cutplane \
286	-onimage [Rappture::icon cutbutton] \
287	-offimage [Rappture::icon cutbutton] \
288	-variable [itcl::scope _settings(-cutplanesvisible)] \
289	-command [itcl::code $this AdjustSetting -cutplanesvisible]
290	}
291	Rappture::Tooltip::for $itk_component(cutplane) \
292	"Show/Hide cutplanes"
293	#pack $itk_component(cutplane) -padx 2 -pady 2
294
295	if { [catch {
296	BuildViewTab
297	BuildVolumeTab
298	BuildCutplanesTab
299	BuildCameraTab
300	} errs] != 0 } {
301	global errorInfo
302	puts stderr "errs=$errs errorInfo=$errorInfo"
303	}
304
305	# Legend
306	set _image(legend) [image create photo]
307	itk_component add legend {
308	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
309	} {
310	usual
311	ignore -highlightthickness
312	rename -background -plotbackground plotBackground Background
313	}
314	bind $itk_component(legend) <Configure> \
315	[itcl::code $this EventuallyRedrawLegend]
316
317	# Hack around the Tk panewindow. The problem is that the requested
318	# size of the 3d view isn't set until an image is retrieved from
319	# the server. So the panewindow uses the tiny size.
320	set w 10000
321	pack forget $itk_component(3dview)
322	blt::table $itk_component(plotarea) \
323	0,0 $itk_component(3dview) -fill both -reqwidth $w \
324	1,0 $itk_component(legend) -fill x
325	blt::table configure $itk_component(plotarea) r1 -resize none
326
327	# Bindings for rotation via mouse
328	bind $itk_component(3dview) <ButtonPress-1> \
329	[itcl::code $this Rotate click %x %y]
330	bind $itk_component(3dview) <B1-Motion> \
331	[itcl::code $this Rotate drag %x %y]
332	bind $itk_component(3dview) <ButtonRelease-1> \
333	[itcl::code $this Rotate release %x %y]
334	bind $itk_component(3dview) <Configure> \
335	[itcl::code $this EventuallyResize %w %h]
336
337	# Bindings for panning via mouse
338	bind $itk_component(3dview) <ButtonPress-2> \
339	[itcl::code $this Pan click %x %y]
340	bind $itk_component(3dview) <B2-Motion> \
341	[itcl::code $this Pan drag %x %y]
342	bind $itk_component(3dview) <ButtonRelease-2> \
343	[itcl::code $this Pan release %x %y]
344
345	# Bindings for panning via keyboard
346	bind $itk_component(3dview) <KeyPress-Left> \
347	[itcl::code $this Pan set -10 0]
348	bind $itk_component(3dview) <KeyPress-Right> \
349	[itcl::code $this Pan set 10 0]
350	bind $itk_component(3dview) <KeyPress-Up> \
351	[itcl::code $this Pan set 0 -10]
352	bind $itk_component(3dview) <KeyPress-Down> \
353	[itcl::code $this Pan set 0 10]
354	bind $itk_component(3dview) <Shift-KeyPress-Left> \
355	[itcl::code $this Pan set -2 0]
356	bind $itk_component(3dview) <Shift-KeyPress-Right> \
357	[itcl::code $this Pan set 2 0]
358	bind $itk_component(3dview) <Shift-KeyPress-Up> \
359	[itcl::code $this Pan set 0 -2]
360	bind $itk_component(3dview) <Shift-KeyPress-Down> \
361	[itcl::code $this Pan set 0 2]
362
363	# Bindings for zoom via keyboard
364	bind $itk_component(3dview) <KeyPress-Prior> \
365	[itcl::code $this Zoom out]
366	bind $itk_component(3dview) <KeyPress-Next> \
367	[itcl::code $this Zoom in]
368
369	bind $itk_component(3dview) <Enter> "focus $itk_component(3dview)"
370
371	if {[string equal "x11" [tk windowingsystem]]} {
372	# Bindings for zoom via mouse
373	bind $itk_component(3dview) <4> [itcl::code $this Zoom out]
374	bind $itk_component(3dview) <5> [itcl::code $this Zoom in]
375	}
376
377	set _image(download) [image create photo]
378
379	eval itk_initialize $args
380
381	EnableWaitDialog 900
382	Connect
383	}
384
385	# ----------------------------------------------------------------------
386	# DESTRUCTOR
387	# ----------------------------------------------------------------------
388	itcl::body Rappture::NanovisViewer::destructor {} {
389	$_dispatcher cancel !rebuild
390	$_dispatcher cancel !send_transfunc
391	$_dispatcher cancel !resize
392	image delete $_image(plot)
393	image delete $_image(legend)
394	image delete $_image(download)
395	catch { blt::arcball destroy $_arcball }
396	array unset _settings
397	}
398
399	# ----------------------------------------------------------------------
400	# USAGE: add <dataobj> ?<settings>?
401	#
402	# Clients use this to add a data object to the plot. The optional
403	# <settings> are used to configure the plot. Allowed settings are
404	# -color, -brightness, -width, -linestyle, and -raise.
405	# ----------------------------------------------------------------------
406	itcl::body Rappture::NanovisViewer::add {dataobj {settings ""}} {
407	if { ![$dataobj isvalid] } {
408	return; # Object doesn't contain valid data.
409	}
410	array set params {
411	-color auto
412	-width 1
413	-linestyle solid
414	-brightness 0
415	-raise 0
416	-description ""
417	-param ""
418	}
419	array set params $settings
420
421	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
422	# can't handle -autocolors yet
423	set params(-color) black
424	}
425	set pos [lsearch -exact $_dlist $dataobj]
426	if {$pos < 0} {
427	lappend _dlist $dataobj
428	set _obj2ovride($dataobj-color) $params(-color)
429	set _obj2ovride($dataobj-width) $params(-width)
430	set _obj2ovride($dataobj-raise) $params(-raise)
431	$_dispatcher event -idle !rebuild
432	}
433	}
434
435	# ----------------------------------------------------------------------
436	# USAGE: get ?-objects?
437	# USAGE: get ?-image 3dview\|legend?
438	#
439	# Clients use this to query the list of objects being plotted, in
440	# order from bottom to top of this result. The optional "-image"
441	# flag can also request the internal images being shown.
442	# ----------------------------------------------------------------------
443	itcl::body Rappture::NanovisViewer::get {args} {
444	if {[llength $args] == 0} {
445	set args "-objects"
446	}
447
448	set op [lindex $args 0]
449	switch -- $op {
450	-objects {
451	# put the dataobj list in order according to -raise options
452	set dlist $_dlist
453	foreach dataobj $dlist {
454	if {[info exists _obj2ovride($dataobj-raise)] &&
455	$_obj2ovride($dataobj-raise)} {
456	set i [lsearch -exact $dlist $dataobj]
457	if {$i >= 0} {
458	set dlist [lreplace $dlist $i $i]
459	lappend dlist $dataobj
460	}
461	}
462	}
463	return $dlist
464	}
465	-image {
466	if {[llength $args] != 2} {
467	error "wrong # args: should be \"get -image 3dview\|legend\""
468	}
469	switch -- [lindex $args end] {
470	3dview {
471	return $_image(plot)
472	}
473	legend {
474	return $_image(legend)
475	}
476	default {
477	error "bad image name \"[lindex $args end]\": should be 3dview or legend"
478	}
479	}
480	}
481	default {
482	error "bad option \"$op\": should be -objects or -image"
483	}
484	}
485	}
486
487	# ----------------------------------------------------------------------
488	# USAGE: delete ?<dataobj1> <dataobj2> ...?
489	#
490	# Clients use this to delete a dataobj from the plot. If no dataobjs
491	# are specified, then all dataobjs are deleted. No data objects are
492	# deleted. They are only removed from the display list.
493	#
494	# ----------------------------------------------------------------------
495	itcl::body Rappture::NanovisViewer::delete {args} {
496	if {[llength $args] == 0} {
497	set args $_dlist
498	}
499	# Delete all specified dataobjs
500	set changed 0
501	foreach dataobj $args {
502	set pos [lsearch -exact $_dlist $dataobj]
503	if { $pos >= 0 } {
504	set _dlist [lreplace $_dlist $pos $pos]
505	array unset _limits $dataobj*
506	array unset _obj2ovride $dataobj-*
507	set changed 1
508	}
509	}
510	# If anything changed, then rebuild the plot
511	if {$changed} {
512	$_dispatcher event -idle !rebuild
513	}
514	}
515
516	# ----------------------------------------------------------------------
517	# USAGE: scale ?<data1> <data2> ...?
518	#
519	# Sets the default limits for the overall plot according to the
520	# limits of the data for all of the given <data> objects. This
521	# accounts for all objects--even those not showing on the screen.
522	# Because of this, the limits are appropriate for all objects as
523	# the user scans through data in the ResultSet viewer.
524	# ----------------------------------------------------------------------
525	itcl::body Rappture::NanovisViewer::scale {args} {
526	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
527	set _limits($val) ""
528	}
529	foreach dataobj $args {
530	if { ![$dataobj isvalid] } {
531	continue; # Object doesn't contain valid data.
532	}
533	foreach axis {x y z v} {
534	foreach { min max } [$dataobj limits $axis] break
535	if {"" != $min && "" != $max} {
536	if {"" == $_limits(${axis}min)} {
537	set _limits(${axis}min) $min
538	set _limits(${axis}max) $max
539	} else {
540	if {$min < $_limits(${axis}min)} {
541	set _limits(${axis}min) $min
542	}
543	if {$max > $_limits(${axis}max)} {
544	set _limits(${axis}max) $max
545	}
546	}
547	}
548	}
549	}
550	}
551
552	# ----------------------------------------------------------------------
553	# USAGE: download coming
554	# USAGE: download controls <downloadCommand>
555	# USAGE: download now
556	#
557	# Clients use this method to create a downloadable representation
558	# of the plot. Returns a list of the form {ext string}, where
559	# "ext" is the file extension (indicating the type of data) and
560	# "string" is the data itself.
561	# ----------------------------------------------------------------------
562	itcl::body Rappture::NanovisViewer::download {option args} {
563	switch $option {
564	coming {
565	if {[catch {
566	blt::winop snap $itk_component(plotarea) $_image(download)
567	}]} {
568	$_image(download) configure -width 1 -height 1
569	$_image(download) put #000000
570	}
571	}
572	controls {
573	set popup .nanovisdownload
574	if { ![winfo exists $popup] } {
575	set inner [BuildDownloadPopup $popup [lindex $args 0]]
576	} else {
577	set inner [$popup component inner]
578	}
579	# FIXME: we only support download of current active component
580	#set num [llength [get]]
581	#set num [expr {($num == 1) ? "1 result" : "$num results"}]
582	set num "current field component"
583	set word [Rappture::filexfer::label downloadWord]
584	$inner.summary configure -text "$word $num in the following format:"
585	update idletasks ;# Fix initial sizes
586	return $popup
587	}
588	now {
589	set popup .nanovisdownload
590	if { [winfo exists $popup] } {
591	$popup deactivate
592	}
593	switch -- $_downloadPopup(format) {
594	"image" {
595	return [$this GetImage [lindex $args 0]]
596	}
597	"vtk" {
598	return [$this GetVtkData [lindex $args 0]]
599	}
600	}
601	return ""
602	}
603	default {
604	error "bad option \"$option\": should be coming, controls, now"
605	}
606	}
607	}
608
609	# ----------------------------------------------------------------------
610	# USAGE: Connect ?<host:port>,<host:port>...?
611	#
612	# Clients use this method to establish a connection to a new
613	# server, or to reestablish a connection to the previous server.
614	# Any existing connection is automatically closed.
615	# ----------------------------------------------------------------------
616	itcl::body Rappture::NanovisViewer::Connect {} {
617	set _hosts [GetServerList "nanovis"]
618	if { "" == $_hosts } {
619	return 0
620	}
621	set _reset 1
622	set result [VisViewer::Connect $_hosts]
623	if { $result } {
624	if { $_reportClientInfo } {
625	# Tell the server the viewer, hub, user and session.
626	# Do this immediately on connect before buffering any commands
627	global env
628
629	set info {}
630	set user "???"
631	if { [info exists env(USER)] } {
632	set user $env(USER)
633	}
634	set session "???"
635	if { [info exists env(SESSION)] } {
636	set session $env(SESSION)
637	}
638	lappend info "version" "$Rappture::version"
639	lappend info "build" "$Rappture::build"
640	lappend info "svnurl" "$Rappture::svnurl"
641	lappend info "installdir" "$Rappture::installdir"
642	lappend info "hub" [exec hostname]
643	lappend info "client" "nanovisviewer"
644	lappend info "user" $user
645	lappend info "session" $session
646	SendCmd "clientinfo [list $info]"
647	}
648
649	set w [winfo width $itk_component(3dview)]
650	set h [winfo height $itk_component(3dview)]
651	EventuallyResize $w $h
652	}
653	return $result
654	}
655
656	#
657	# isconnected --
658	#
659	# Indicates if we are currently connected to the visualization server.
660	#
661	itcl::body Rappture::NanovisViewer::isconnected {} {
662	return [VisViewer::IsConnected]
663	}
664
665	#
666	# disconnect --
667	#
668	itcl::body Rappture::NanovisViewer::disconnect {} {
669	Disconnect
670	}
671
672	#
673	# Disconnect --
674	#
675	# Clients use this method to disconnect from the current rendering
676	# server.
677	#
678	itcl::body Rappture::NanovisViewer::Disconnect {} {
679	VisViewer::Disconnect
680
681	# disconnected -- no more data sitting on server
682	array unset _serverDatasets
683	}
684
685	# ----------------------------------------------------------------------
686	# USAGE: SendTransferFunctions
687	# ----------------------------------------------------------------------
688	itcl::body Rappture::NanovisViewer::SendTransferFunctions {} {
689	if { $_first == "" } {
690	puts stderr "first not set"
691	return
692	}
693	# Ensure that the global thickness setting (in the slider
694	# settings widget) is used for the active transfer-function. Update
695	# the value in the _settings varible.
696	# Scale values between 0.00001 and 0.01000
697	set thickness [expr {double($_settings(-thickness)) * 0.0001}]
698
699	foreach tag [CurrentDatasets] {
700	if { ![info exists _serverDatasets($tag)] \|\| !$_serverDatasets($tag) } {
701	# The volume hasn't reached the server yet. How did we get
702	# here?
703	puts stderr "Don't have $tag in _serverDatasets"
704	continue
705	}
706	if { ![info exists _dataset2style($tag)] } {
707	puts stderr "don't have style for volume $tag"
708	continue; # How does this happen?
709	}
710	set tf $_dataset2style($tag)
711	set _settings($tf-thickness) $thickness
712	ComputeTransferFunction $tf
713	# FIXME: Need to the send information as to what transfer functions
714	# to update so that we only update the transfer function
715	# as necessary. Right now, all transfer functions are
716	# updated. This makes moving the isomarker slider chunky.
717	if { ![info exists _activeTfs($tf)] \|\| !$_activeTfs($tf) } {
718	set _activeTfs($tf) 1
719	}
720	SendCmd "volume shading transfunc $tf $tag"
721	}
722	FixLegend
723	}
724
725	# ----------------------------------------------------------------------
726	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
727	#
728	# Invoked automatically whenever the "image" command comes in from
729	# the rendering server. Indicates that binary image data with the
730	# specified <size> will follow.
731	# ----------------------------------------------------------------------
732	itcl::body Rappture::NanovisViewer::ReceiveImage { args } {
733	array set info {
734	-token "???"
735	-bytes 0
736	-type image
737	}
738	array set info $args
739	set bytes [ReceiveBytes $info(-bytes)]
740	ReceiveEcho <<line "<read $info(-bytes) bytes"
741	if { $info(-type) == "image" } {
742	ReceiveEcho "for [image width $_image(plot)]x[image height $_image(plot)] image>"
743	$_image(plot) configure -data $bytes
744	} elseif { $info(-type) == "print" } {
745	set tag $this-print-$info(-token)
746	set _hardcopy($tag) $bytes
747	}
748	}
749
750	#
751	# DrawLegend --
752	#
753	itcl::body Rappture::NanovisViewer::DrawLegend { tf } {
754	set c $itk_component(legend)
755	set w [winfo width $c]
756	set h [winfo height $c]
757	set lx 10
758	set ly [expr {$h - 1}]
759	if {"" == [$c find withtag colorbar]} {
760	$c create image 10 10 -anchor nw \
761	-image $_image(legend) -tags colorbar
762	$c create text $lx $ly -anchor sw \
763	-fill $itk_option(-plotforeground) -tags "limits text vmin"
764	$c create text [expr {$w-$lx}] $ly -anchor se \
765	-fill $itk_option(-plotforeground) -tags "limits text vmax"
766	$c create text [expr {$w/2}] $ly -anchor s \
767	-fill $itk_option(-plotforeground) -tags "title text"
768	$c lower colorbar
769	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
770	}
771
772	# Display the markers used by the current transfer function.
773	array set limits [limits $tf]
774	$c itemconfigure vmin -text [format %g $limits(min)]
775	$c coords vmin $lx $ly
776
777	$c itemconfigure vmax -text [format %g $limits(max)]
778	$c coords vmax [expr {$w-$lx}] $ly
779
780	set title [$_first hints label]
781	set units [$_first hints units]
782	if { $units != "" } {
783	set title "$title ($units)"
784	}
785	$c itemconfigure title -text $title
786	$c coords title [expr {$w/2}] $ly
787
788	if { [info exists _isomarkers($tf)] } {
789	foreach m $_isomarkers($tf) {
790	$m visible yes
791	}
792	}
793
794	# The colormap may have changed. Resync the slicers with the colormap.
795	set datasets [CurrentDatasets -cutplanes]
796	SendCmd "volume data state $_settings(-volume) $datasets"
797
798	# Adjust the cutplane for only the first component in the topmost volume
799	# (i.e. the first volume designated in the field).
800	set tag [lindex $datasets 0]
801	foreach axis {x y z} {
802	# Turn off cutplanes for all volumes
803	SendCmd "cutplane state 0 $axis"
804	if { $_settings(-${axis}cutplanevisible) } {
805	# Turn on cutplane for this particular volume and set the position
806	SendCmd "cutplane state 1 $axis $tag"
807	set pos [expr {0.01*$_settings(-${axis}cutplaneposition)}]
808	SendCmd "cutplane position $pos $axis $tag"
809	}
810	}
811	}
812
813	#
814	# ReceiveLegend --
815	#
816	# The procedure is the response from the render server to each "legend"
817	# command. The server sends back a "legend" command invoked our
818	# the slave interpreter. The purpose is to collect data of the image
819	# representing the legend in the canvas. In addition, the
820	# active transfer function is displayed.
821	#
822	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
823	if { ![isconnected] } {
824	return
825	}
826	set bytes [ReceiveBytes $size]
827	$_image(legend) configure -data $bytes
828	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
829
830	DrawLegend $tf
831	}
832
833	#
834	# ReceiveData --
835	#
836	# The procedure is the response from the render server to each "data
837	# follows" command. The server sends back a "data" command invoked our
838	# the slave interpreter. The purpose is to collect the min/max of the
839	# volume sent to the render server. Since the client (nanovisviewer)
840	# doesn't parse 3D data formats, we rely on the server (nanovis) to
841	# tell us what the limits are. Once we've received the limits to all
842	# the data we've sent (tracked by _recvdDatasets) we can then determine
843	# what the transfer functions are for these volumes.
844	#
845	#
846	# Note: There is a considerable tradeoff in having the server report
847	# back what the data limits are. It means that much of the code
848	# having to do with transfer-functions has to wait for the data
849	# to come back, since the isomarkers are calculated based upon
850	# the data limits. The client code is much messier because of
851	# this. The alternative is to parse any of the 3D formats on the
852	# client side.
853	#
854	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
855	if { ![isconnected] } {
856	return
857	}
858
859	# Arguments from server are name value pairs. Stuff them in an array.
860	array set info $args
861
862	set tag $info(tag)
863	set parts [split $tag -]
864
865	#
866	# Volumes don't exist until we're told about them.
867	#
868	set dataobj [lindex $parts 0]
869	set _serverDatasets($tag) 1
870	if { $_settings(-volume) && $dataobj == $_first } {
871	SendCmd "volume state 1 $tag"
872	}
873	set _limits($tag-min) $info(min); # Minimum value of the volume.
874	set _limits($tag-max) $info(max); # Maximum value of the volume.
875	set _limits(vmin) $info(vmin); # Overall minimum value.
876	set _limits(vmax) $info(vmax); # Overall maximum value.
877
878	unset _recvdDatasets($tag)
879	if { [array size _recvdDatasets] == 0 } {
880	# The active transfer function is by default the first component of
881	# the first data object. This assumes that the data is always
882	# successfully transferred.
883	updateTransferFunctions
884	}
885	}
886
887	# ----------------------------------------------------------------------
888	# USAGE: Rebuild
889	#
890	# Called automatically whenever something changes that affects the
891	# data in the widget. Clears any existing data and rebuilds the
892	# widget to display new data.
893	# ----------------------------------------------------------------------
894	itcl::body Rappture::NanovisViewer::Rebuild {} {
895	set w [winfo width $itk_component(3dview)]
896	set h [winfo height $itk_component(3dview)]
897	if { $w < 2 \|\| $h < 2 } {
898	update
899	$_dispatcher event -idle !rebuild
900	return
901	}
902
903	# Turn on buffering of commands to the server. We don't want to
904	# be preempted by a server disconnect/reconnect (which automatically
905	# generates a new call to Rebuild).
906	StartBufferingCommands
907
908	# Hide all the isomarkers. Can't remove them. Have to remember the
909	# settings since the user may have created/deleted/moved markers.
910
911	foreach tf [array names _isomarkers] {
912	foreach m $_isomarkers($tf) {
913	$m visible no
914	}
915	}
916
917	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
918	set _width $w
919	set _height $h
920	$_arcball resize $w $h
921	DoResize
922	}
923
924	foreach dataobj [get] {
925	foreach cname [$dataobj components] {
926	set tag $dataobj-$cname
927	if { ![info exists _serverDatasets($tag)] } {
928	# Send the data as one huge base64-encoded mess -- yuck!
929	if { [$dataobj type] == "dx" } {
930	if { ![$dataobj isvalid] } {
931	puts stderr "??? $dataobj is invalid"
932	}
933	set data [$dataobj blob $cname]
934	} else {
935	set data [$dataobj vtkdata $cname]
936	if 0 {
937	set f [open "/tmp/volume.vtk" "w"]
938	fconfigure $f -translation binary -encoding binary
939	puts -nonewline $f $data
940	close $f
941	}
942	}
943	set nbytes [string length $data]
944	if { $_reportClientInfo } {
945	set info {}
946	lappend info "tool_id" [$dataobj hints toolid]
947	lappend info "tool_name" [$dataobj hints toolname]
948	lappend info "tool_title" [$dataobj hints tooltitle]
949	lappend info "tool_command" [$dataobj hints toolcommand]
950	lappend info "tool_revision" [$dataobj hints toolrevision]
951	lappend info "dataset_label" [$dataobj hints label]
952	lappend info "dataset_size" $nbytes
953	lappend info "dataset_tag" $tag
954	SendCmd "clientinfo [list $info]"
955	}
956	SendCmd "volume data follows $nbytes $tag"
957	SendData $data
958	set _recvdDatasets($tag) 1
959	set _serverDatasets($tag) 0
960	}
961	NameTransferFunction $dataobj $cname
962	}
963	}
964	set _first [lindex [get] 0]
965	# Outline seems to need to be reset every update.
966	InitSettings -outlinevisible ;#-cutplanesvisible
967	if { $_reset } {
968	#
969	# Reset the camera and other view parameters
970	#
971	set _settings(-qw) $_view(-qw)
972	set _settings(-qx) $_view(-qx)
973	set _settings(-qy) $_view(-qy)
974	set _settings(-qz) $_view(-qz)
975	set _settings(-xpan) $_view(-xpan)
976	set _settings(-ypan) $_view(-ypan)
977	set _settings(-zoom) $_view(-zoom)
978
979	set q [ViewToQuaternion]
980	$_arcball quaternion $q
981	SendCmd "camera orient $q"
982	SendCmd "camera reset"
983	PanCamera
984	SendCmd "camera zoom $_view(-zoom)"
985
986	# Turn off cutplanes for all volumes
987	foreach axis {x y z} {
988	SendCmd "cutplane state 0 $axis"
989	}
990
991	InitSettings -axesvisible -gridvisible \
992	-light2side -isosurfaceshading -opacity \
993	-light \
994	-xcutplanevisible -ycutplanevisible -zcutplanevisible
995
996	if {"" != $_first} {
997	set axis [$_first hints updir]
998	if { "" != $axis } {
999	SendCmd "up $axis"
1000	}
1001	set location [$_first hints camera]
1002	if { $location != "" } {
1003	array set _view $location
1004	}
1005	}
1006	}
1007
1008	# nothing to send -- activate the proper ivol
1009	SendCmd "volume state 0"
1010	if {"" != $_first} {
1011	set datasets [array names _serverDatasets $_first-*]
1012	if { $datasets != "" } {
1013	SendCmd "volume state 1 $datasets"
1014	}
1015	# If the first volume already exists on the server, then make sure
1016	# we display the proper transfer function in the legend.
1017	set cname [lindex [$_first components] 0]
1018	if { [info exists _serverDatasets($_first-$cname)] } {
1019	updateTransferFunctions
1020	}
1021	}
1022	# Actually write the commands to the server socket. If it fails, we don't
1023	# care. We're finished here.
1024	blt::busy hold $itk_component(hull)
1025	StopBufferingCommands
1026	blt::busy release $itk_component(hull)
1027	set _reset 0
1028	}
1029
1030	# ----------------------------------------------------------------------
1031	# USAGE: CurrentDatasets ?-cutplanes?
1032	#
1033	# Returns a list of volume server IDs for the current volume being
1034	# displayed. This is normally a single ID, but it might be a list
1035	# of IDs if the current data object has multiple components.
1036	# ----------------------------------------------------------------------
1037	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
1038	set rlist ""
1039	if { $_first == "" } {
1040	return
1041	}
1042	foreach cname [$_first components] {
1043	set tag $_first-$cname
1044	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
1045	array set style {
1046	-cutplanes 1
1047	}
1048	array set style [lindex [$_first components -style $cname] 0]
1049	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
1050	lappend rlist $tag
1051	}
1052	}
1053	}
1054	return $rlist
1055	}
1056
1057	# ----------------------------------------------------------------------
1058	# USAGE: Zoom in
1059	# USAGE: Zoom out
1060	# USAGE: Zoom reset
1061	#
1062	# Called automatically when the user clicks on one of the zoom
1063	# controls for this widget. Changes the zoom for the current view.
1064	# ----------------------------------------------------------------------
1065	itcl::body Rappture::NanovisViewer::Zoom {option} {
1066	switch -- $option {
1067	"in" {
1068	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1069	set _settings(-zoom) $_view(-zoom)
1070	SendCmd "camera zoom $_view(-zoom)"
1071	}
1072	"out" {
1073	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1074	set _settings(-zoom) $_view(-zoom)
1075	SendCmd "camera zoom $_view(-zoom)"
1076	}
1077	"reset" {
1078	array set _view {
1079	-qw 0.853553
1080	-qx -0.353553
1081	-qy 0.353553
1082	-qz 0.146447
1083	-xpan 0
1084	-ypan 0
1085	-zoom 1.0
1086	}
1087	if { $_first != "" } {
1088	set location [$_first hints camera]
1089	if { $location != "" } {
1090	array set _view $location
1091	}
1092	}
1093	set q [ViewToQuaternion]
1094	$_arcball quaternion $q
1095	SendCmd "camera orient $q"
1096	SendCmd "camera reset"
1097	set _settings(-qw) $_view(-qw)
1098	set _settings(-qx) $_view(-qx)
1099	set _settings(-qy) $_view(-qy)
1100	set _settings(-qz) $_view(-qz)
1101	set _settings(-xpan) $_view(-xpan)
1102	set _settings(-ypan) $_view(-ypan)
1103	set _settings(-zoom) $_view(-zoom)
1104	}
1105	}
1106	}
1107
1108	itcl::body Rappture::NanovisViewer::PanCamera {} {
1109	set x $_view(-xpan)
1110	set y $_view(-ypan)
1111	SendCmd "camera pan $x $y"
1112	}
1113
1114	# ----------------------------------------------------------------------
1115	# USAGE: Rotate click <x> <y>
1116	# USAGE: Rotate drag <x> <y>
1117	# USAGE: Rotate release <x> <y>
1118	#
1119	# Called automatically when the user clicks/drags/releases in the
1120	# plot area. Moves the plot according to the user's actions.
1121	# ----------------------------------------------------------------------
1122	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1123	switch -- $option {
1124	click {
1125	$itk_component(3dview) configure -cursor fleur
1126	set _click(x) $x
1127	set _click(y) $y
1128	}
1129	drag {
1130	if {[array size _click] == 0} {
1131	Rotate click $x $y
1132	} else {
1133	set w [winfo width $itk_component(3dview)]
1134	set h [winfo height $itk_component(3dview)]
1135	if {$w <= 0 \|\| $h <= 0} {
1136	return
1137	}
1138
1139	if {[catch {
1140	# this fails sometimes for no apparent reason
1141	set dx [expr {double($x-$_click(x))/$w}]
1142	set dy [expr {double($y-$_click(y))/$h}]
1143	}]} {
1144	return
1145	}
1146
1147	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1148	QuaternionToView $q
1149	set _settings(-qw) $_view(-qw)
1150	set _settings(-qx) $_view(-qx)
1151	set _settings(-qy) $_view(-qy)
1152	set _settings(-qz) $_view(-qz)
1153	SendCmd "camera orient $q"
1154
1155	set _click(x) $x
1156	set _click(y) $y
1157	}
1158	}
1159	release {
1160	Rotate drag $x $y
1161	$itk_component(3dview) configure -cursor ""
1162	catch {unset _click}
1163	}
1164	default {
1165	error "bad option \"$option\": should be click, drag, release"
1166	}
1167	}
1168	}
1169
1170	# ----------------------------------------------------------------------
1171	# USAGE: $this Pan click x y
1172	# $this Pan drag x y
1173	# $this Pan release x y
1174	#
1175	# Called automatically when the user clicks on one of the zoom
1176	# controls for this widget. Changes the zoom for the current view.
1177	# ----------------------------------------------------------------------
1178	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1179	# Experimental stuff
1180	set w [winfo width $itk_component(3dview)]
1181	set h [winfo height $itk_component(3dview)]
1182	if { $option == "set" } {
1183	set x [expr $x / double($w)]
1184	set y [expr $y / double($h)]
1185	set _view(-xpan) [expr $_view(-xpan) + $x]
1186	set _view(-ypan) [expr $_view(-ypan) + $y]
1187	PanCamera
1188	set _settings(-xpan) $_view(-xpan)
1189	set _settings(-ypan) $_view(-ypan)
1190	return
1191	}
1192	if { $option == "click" } {
1193	set _click(x) $x
1194	set _click(y) $y
1195	$itk_component(3dview) configure -cursor hand1
1196	}
1197	if { $option == "drag" \|\| $option == "release" } {
1198	set dx [expr ($_click(x) - $x)/double($w)]
1199	set dy [expr ($_click(y) - $y)/double($h)]
1200	set _click(x) $x
1201	set _click(y) $y
1202	set _view(-xpan) [expr $_view(-xpan) - $dx]
1203	set _view(-ypan) [expr $_view(-ypan) - $dy]
1204	PanCamera
1205	set _settings(-xpan) $_view(-xpan)
1206	set _settings(-ypan) $_view(-ypan)
1207	}
1208	if { $option == "release" } {
1209	$itk_component(3dview) configure -cursor ""
1210	}
1211	}
1212
1213	# ----------------------------------------------------------------------
1214	# USAGE: InitSettings <what> ?<value>?
1215	#
1216	# Used internally to update rendering settings whenever parameters
1217	# change in the popup settings panel. Sends the new settings off
1218	# to the back end.
1219	# ----------------------------------------------------------------------
1220	itcl::body Rappture::NanovisViewer::InitSettings { args } {
1221	foreach arg $args {
1222	AdjustSetting $arg
1223	}
1224	}
1225
1226	# ----------------------------------------------------------------------
1227	# USAGE: AdjustSetting <what> ?<value>?
1228	#
1229	# Used internally to update rendering settings whenever parameters
1230	# change in the popup settings panel. Sends the new settings off
1231	# to the back end.
1232	# ----------------------------------------------------------------------
1233	itcl::body Rappture::NanovisViewer::AdjustSetting {what {value ""}} {
1234	if {![isconnected]} {
1235	return
1236	}
1237	switch -- $what {
1238	"-axesvisible" {
1239	SendCmd "axis visible $_settings($what)"
1240	}
1241	"-background" {
1242	set bgcolor [$itk_component(background) value]
1243	array set fgcolors {
1244	"black" "white"
1245	"white" "black"
1246	"grey" "black"
1247	}
1248	configure -plotbackground $bgcolor \
1249	-plotforeground $fgcolors($bgcolor)
1250	#DrawLegend $_current
1251	}
1252	"-colormap" {
1253	set color [$itk_component(colormap) value]
1254	set _settings($what) $color
1255	# Only set the colormap on the first volume. Ignore the others.
1256	#ResetColormap $color
1257	}
1258	"-cutplanesvisible" {
1259	set bool $_settings($what)
1260	# We only set cutplanes on the first dataset.
1261	set datasets [CurrentDatasets -cutplanes]
1262	set tag [lindex $datasets 0]
1263	SendCmd "cutplane visible $bool $tag"
1264	}
1265	"-gridvisible" {
1266	SendCmd "grid visible $_settings($what)"
1267	}
1268	"-isosurfaceshading" {
1269	set val $_settings($what)
1270	SendCmd "volume shading isosurface $val"
1271	}
1272	"-legendvisible" {
1273	if { $_settings($what) } {
1274	blt::table $itk_component(plotarea) \
1275	0,0 $itk_component(3dview) -fill both \
1276	1,0 $itk_component(legend) -fill x
1277	blt::table configure $itk_component(plotarea) r1 -resize none
1278	} else {
1279	blt::table forget $itk_component(legend)
1280	}
1281	}
1282	"-light" {
1283	set val $_settings($what)
1284	set diffuse [expr {0.01*$val}]
1285	set ambient [expr {1.0-$diffuse}]
1286	set specularLevel 0.3
1287	set specularExp 90.0
1288	SendCmd "volume shading ambient $ambient"
1289	SendCmd "volume shading diffuse $diffuse"
1290	SendCmd "volume shading specularLevel $specularLevel"
1291	SendCmd "volume shading specularExp $specularExp"
1292	}
1293	"-light2side" {
1294	set val $_settings($what)
1295	SendCmd "volume shading light2side $val"
1296	}
1297	"-opacity" {
1298	set val $_settings($what)
1299	set sval [expr { 0.01 * double($val) }]
1300	SendCmd "volume shading opacity $sval"
1301	}
1302	"-outlinevisible" {
1303	SendCmd "volume outline state $_settings($what)"
1304	}
1305	"-thickness" {
1306	if { [array names _activeTfs] > 0 } {
1307	set val $_settings($what)
1308	# Scale values between 0.00001 and 0.01000
1309	set sval [expr {0.0001*double($val)}]
1310	foreach tf [array names _activeTfs] {
1311	set _settings($tf${what}) $sval
1312	set _activeTfs($tf) 0
1313	}
1314	updateTransferFunctions
1315	}
1316	}
1317	"-volume" {
1318	set datasets [CurrentDatasets -cutplanes]
1319	SendCmd "volume data state $_settings($what) $datasets"
1320	}
1321	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1322	set axis [string range $what 1 1]
1323	set pos [expr $_settings($what) * 0.01]
1324	# We only set cutplanes on the first dataset.
1325	set datasets [CurrentDatasets -cutplanes]
1326	set tag [lindex $datasets 0]
1327	SendCmd "cutplane position $pos $axis $tag"
1328	}
1329	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1330	set axis [string range $what 1 1]
1331	set bool $_settings($what)
1332	# We only set cutplanes on the first dataset.
1333	set datasets [CurrentDatasets -cutplanes]
1334	set tag [lindex $datasets 0]
1335	SendCmd "cutplane state $bool $axis $tag"
1336	if { $bool } {
1337	$itk_component(${axis}CutScale) configure -state normal \
1338	-troughcolor white
1339	} else {
1340	$itk_component(${axis}CutScale) configure -state disabled \
1341	-troughcolor grey82
1342	}
1343	}
1344	default {
1345	error "don't know how to fix $what"
1346	}
1347	}
1348	}
1349
1350	# ----------------------------------------------------------------------
1351	# USAGE: FixLegend
1352	#
1353	# Used internally to update the legend area whenever it changes size
1354	# or when the field changes. Asks the server to send a new legend
1355	# for the current field.
1356	# ----------------------------------------------------------------------
1357	itcl::body Rappture::NanovisViewer::FixLegend {} {
1358	set _resizeLegendPending 0
1359	set lineht [font metrics $itk_option(-font) -linespace]
1360	set w [expr {$_width-20}]
1361	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1362	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1363	set tag [lindex [CurrentDatasets] 0]
1364	if { [info exists _dataset2style($tag)] } {
1365	SendCmd "legend $_dataset2style($tag) $w $h"
1366	}
1367	}
1368	}
1369
1370	#
1371	# NameTransferFunction --
1372	#
1373	# Creates a transfer function name based on the <style> settings in the
1374	# library run.xml file. This placeholder will be used later to create
1375	# and send the actual transfer function once the data info has been sent
1376	# to us by the render server. [We won't know the volume limits until the
1377	# server parses the 3D data and sends back the limits via ReceiveData.]
1378	#
1379	# FIXME: The current way we generate transfer-function names completely
1380	# ignores the -markers option. The problem is that we are forced
1381	# to compute the name from an increasing complex set of values:
1382	# color, levels, markers.
1383	#
1384	itcl::body Rappture::NanovisViewer::NameTransferFunction { dataobj cname } {
1385	array set style {
1386	-color BCGYR
1387	-levels 6
1388	}
1389	set tag $dataobj-$cname
1390	array set style [lindex [$dataobj components -style $cname] 0]
1391	set tf "$style(-color):$style(-levels)"
1392	set _dataset2style($tag) $tf
1393	lappend _style2datasets($tf) $tag
1394	return $tf
1395	}
1396
1397	#
1398	# ComputeTransferFunction --
1399	#
1400	# Computes and sends the transfer function to the render server. It's
1401	# assumed that the volume data limits are known and that the global
1402	# transfer-functions slider values have been set up. Both parts are
1403	# needed to compute the relative value (location) of the marker, and
1404	# the alpha map of the transfer function.
1405	#
1406	itcl::body Rappture::NanovisViewer::ComputeTransferFunction { tf } {
1407	array set style {
1408	-color BCGYR
1409	-levels 6
1410	}
1411
1412	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1413	array set style [lindex [$dataobj components -style $cname] 0]
1414
1415	# We have to parse the style attributes for a volume using this
1416	# transfer-function once. This sets up the initial isomarkers for the
1417	# transfer function. The user may add/delete markers, so we have to
1418	# maintain a list of markers for each transfer-function. We use the one
1419	# of the volumes (the first in the list) using the transfer-function as a
1420	# reference.
1421	#
1422	# FIXME: The current way we generate transfer-function names completely
1423	# ignores the -markers option. The problem is that we are forced
1424	# to compute the name from an increasing complex set of values:
1425	# color, levels, markers.
1426	if { ![info exists _isomarkers($tf)] } {
1427	# Have to defer creation of isomarkers until we have data limits
1428	if { [info exists style(-markers)] &&
1429	[llength $style(-markers)] > 0 } {
1430	ParseMarkersOption $tf $style(-markers)
1431	} else {
1432	ParseLevelsOption $tf $style(-levels)
1433	}
1434	}
1435	set cmap [ColorsToColormap $style(-color)]
1436
1437	# Transfer function should be normalized with [0,1] range
1438	# The volume shading opacity setting is used to scale opacity
1439	# in the volume shader.
1440	set max 1.0
1441
1442	set isovalues {}
1443	foreach m $_isomarkers($tf) {
1444	lappend isovalues [$m relval]
1445	}
1446	# Sort the isovalues
1447	set isovalues [lsort -real $isovalues]
1448
1449	if { ![info exists _settings($tf-thickness)]} {
1450	set _settings($tf-thickness) 0.005
1451	}
1452	set delta $_settings($tf-thickness)
1453
1454	set first [lindex $isovalues 0]
1455	set last [lindex $isovalues end]
1456	set amap ""
1457	if { $first == "" \|\| $first != 0.0 } {
1458	lappend amap 0.0 0.0
1459	}
1460	foreach x $isovalues {
1461	set x1 [expr {$x-$delta-0.00001}]
1462	set x2 [expr {$x-$delta}]
1463	set x3 [expr {$x+$delta}]
1464	set x4 [expr {$x+$delta+0.00001}]
1465	if { $x1 < 0.0 } {
1466	set x1 0.0
1467	} elseif { $x1 > 1.0 } {
1468	set x1 1.0
1469	}
1470	if { $x2 < 0.0 } {
1471	set x2 0.0
1472	} elseif { $x2 > 1.0 } {
1473	set x2 1.0
1474	}
1475	if { $x3 < 0.0 } {
1476	set x3 0.0
1477	} elseif { $x3 > 1.0 } {
1478	set x3 1.0
1479	}
1480	if { $x4 < 0.0 } {
1481	set x4 0.0
1482	} elseif { $x4 > 1.0 } {
1483	set x4 1.0
1484	}
1485	# add spikes in the middle
1486	lappend amap $x1 0.0
1487	lappend amap $x2 $max
1488	lappend amap $x3 $max
1489	lappend amap $x4 0.0
1490	}
1491	if { $last == "" \|\| $last != 1.0 } {
1492	lappend amap 1.0 0.0
1493	}
1494	SendCmd "transfunc define $tf { $cmap } { $amap }"
1495	}
1496
1497	# ----------------------------------------------------------------------
1498	# CONFIGURATION OPTION: -plotbackground
1499	# ----------------------------------------------------------------------
1500	itcl::configbody Rappture::NanovisViewer::plotbackground {
1501	if { [isconnected] } {
1502	set color $itk_option(-plotbackground)
1503	set rgb [Color2RGB $color]
1504	SendCmd "screen bgcolor $rgb"
1505	$itk_component(legend) configure -background $color
1506	}
1507	}
1508
1509	# ----------------------------------------------------------------------
1510	# CONFIGURATION OPTION: -plotforeground
1511	# ----------------------------------------------------------------------
1512	itcl::configbody Rappture::NanovisViewer::plotforeground {
1513	if { [isconnected] } {
1514	set color $itk_option(-plotforeground)
1515	set rgb [Color2RGB $color]
1516	SendCmd "volume outline color $rgb"
1517	SendCmd "grid axiscolor $rgb"
1518	SendCmd "grid linecolor $rgb"
1519	$itk_component(legend) itemconfigure text -fill $color
1520	}
1521	}
1522
1523	# ----------------------------------------------------------------------
1524	# CONFIGURATION OPTION: -plotoutline
1525	# ----------------------------------------------------------------------
1526	itcl::configbody Rappture::NanovisViewer::plotoutline {
1527	# Must check if we are connected because this routine is called from the
1528	# class body when the -plotoutline itk_option is defined. At that point
1529	# the NanovisViewer class constructor hasn't been called, so we can't
1530	# start sending commands to visualization server.
1531	if { [isconnected] } {
1532	if {"" == $itk_option(-plotoutline)} {
1533	SendCmd "volume outline state off"
1534	} else {
1535	SendCmd "volume outline state on"
1536	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1537	}
1538	}
1539	}
1540
1541	#
1542	# The -levels option takes a single value that represents the number
1543	# of evenly distributed markers based on the current data range. Each
1544	# marker is a relative value from 0.0 to 1.0.
1545	#
1546	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1547	set c $itk_component(legend)
1548	regsub -all "," $levels " " levels
1549	if {[string is int $levels]} {
1550	for {set i 1} { $i <= $levels } {incr i} {
1551	set x [expr {double($i)/($levels+1)}]
1552	set m [Rappture::IsoMarker \#auto $c $this $tf]
1553	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1554	$m relval $x
1555	lappend _isomarkers($tf) $m
1556	}
1557	} else {
1558	foreach x $levels {
1559	set m [Rappture::IsoMarker \#auto $c $this $tf]
1560	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1561	$m relval $x
1562	lappend _isomarkers($tf) $m
1563	}
1564	}
1565	}
1566
1567	#
1568	# The -markers option takes a list of zero or more values (the values
1569	# may be separated either by spaces or commas) that have the following
1570	# format:
1571	#
1572	# N% Percent of current total data range. Converted to
1573	# to a relative value between 0.0 and 1.0.
1574	# N Absolute value of marker. If the marker is outside of
1575	# the current range, it will be displayed on the outer
1576	# edge of the legends, but it range it represents will
1577	# not be seen.
1578	#
1579	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1580	set c $itk_component(legend)
1581	regsub -all "," $markers " " markers
1582	foreach marker $markers {
1583	set n [scan $marker "%g%s" value suffix]
1584	if { $n == 2 && $suffix == "%" } {
1585	# ${n}% : Set relative value.
1586	set value [expr {$value * 0.01}]
1587	set m [Rappture::IsoMarker \#auto $c $this $tf]
1588	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1589	$m relval $value
1590	lappend _isomarkers($tf) $m
1591	} else {
1592	# ${n} : Set absolute value.
1593	set m [Rappture::IsoMarker \#auto $c $this $tf]
1594	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1595	$m absval $value
1596	lappend _isomarkers($tf) $m
1597	}
1598	}
1599	}
1600
1601	itcl::body Rappture::NanovisViewer::updateTransferFunctions {} {
1602	$_dispatcher event -idle !send_transfunc
1603	}
1604
1605	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1606	if { $_first == "" } {
1607	error "active transfer function isn't set"
1608	}
1609	set tag [lindex [CurrentDatasets] 0]
1610	set tf $_dataset2style($tag)
1611	set c $itk_component(legend)
1612	set m [Rappture::IsoMarker \#auto $c $this $tf]
1613	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1614	set w [winfo width $c]
1615	$m relval [expr {double($x-10)/($w-20)}]
1616	lappend _isomarkers($tf) $m
1617	updateTransferFunctions
1618	return 1
1619	}
1620
1621	itcl::body Rappture::NanovisViewer::removeDuplicateMarker { marker x } {
1622	set tf [$marker transferfunc]
1623	set bool 0
1624	if { [info exists _isomarkers($tf)] } {
1625	set list {}
1626	set marker [namespace tail $marker]
1627	foreach m $_isomarkers($tf) {
1628	set sx [$m screenpos]
1629	if { $m != $marker } {
1630	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1631	$marker relval [$m relval]
1632	itcl::delete object $m
1633	bell
1634	set bool 1
1635	continue
1636	}
1637	}
1638	lappend list $m
1639	}
1640	set _isomarkers($tf) $list
1641	updateTransferFunctions
1642	}
1643	return $bool
1644	}
1645
1646	itcl::body Rappture::NanovisViewer::overMarker { marker x } {
1647	set tf [$marker transferfunc]
1648	if { [info exists _isomarkers($tf)] } {
1649	set marker [namespace tail $marker]
1650	foreach m $_isomarkers($tf) {
1651	set sx [$m screenpos]
1652	if { $m != $marker } {
1653	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1654	$m activate $bool
1655	}
1656	}
1657	}
1658	return ""
1659	}
1660
1661	itcl::body Rappture::NanovisViewer::limits { tf } {
1662	set _limits(min) 0.0
1663	set _limits(max) 1.0
1664	if { ![info exists _style2datasets($tf)] } {
1665	return [array get _limits]
1666	}
1667	set min ""; set max ""
1668	foreach tag $_style2datasets($tf) {
1669	if { ![info exists _serverDatasets($tag)] } {
1670	continue
1671	}
1672	if { ![info exists _limits($tag-min)] } {
1673	continue
1674	}
1675	if { $min == "" \|\| $min > $_limits($tag-min) } {
1676	set min $_limits($tag-min)
1677	}
1678	if { $max == "" \|\| $max < $_limits($tag-max) } {
1679	set max $_limits($tag-max)
1680	}
1681	}
1682	if { $min != "" } {
1683	set _limits(min) $min
1684	}
1685	if { $max != "" } {
1686	set _limits(max) $max
1687	}
1688	return [array get _limits]
1689	}
1690
1691	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1692	set fg [option get $itk_component(hull) font Font]
1693	#set bfg [option get $itk_component(hull) boldFont Font]
1694
1695	set inner [$itk_component(main) insert end \
1696	-title "View Settings" \
1697	-icon [Rappture::icon wrench]]
1698	$inner configure -borderwidth 4
1699
1700	checkbutton $inner.isosurface \
1701	-text "Isosurface shading" \
1702	-variable [itcl::scope _settings(-isosurfaceshading)] \
1703	-command [itcl::code $this AdjustSetting -isosurfaceshading] \
1704	-font "Arial 9"
1705
1706	checkbutton $inner.axes \
1707	-text "Axes" \
1708	-variable [itcl::scope _settings(-axesvisible)] \
1709	-command [itcl::code $this AdjustSetting -axesvisible] \
1710	-font "Arial 9"
1711
1712	checkbutton $inner.grid \
1713	-text "Grid" \
1714	-variable [itcl::scope _settings(-gridvisible)] \
1715	-command [itcl::code $this AdjustSetting -gridvisible] \
1716	-font "Arial 9"
1717
1718	checkbutton $inner.outline \
1719	-text "Outline" \
1720	-variable [itcl::scope _settings(-outlinevisible)] \
1721	-command [itcl::code $this AdjustSetting -outlinevisible] \
1722	-font "Arial 9"
1723
1724	checkbutton $inner.legend \
1725	-text "Legend" \
1726	-variable [itcl::scope _settings(-legendvisible)] \
1727	-command [itcl::code $this AdjustSetting -legendvisible] \
1728	-font "Arial 9"
1729
1730	checkbutton $inner.volume \
1731	-text "Volume" \
1732	-variable [itcl::scope _settings(-volume)] \
1733	-command [itcl::code $this AdjustSetting -volume] \
1734	-font "Arial 9"
1735
1736	label $inner.background_l -text "Background" -font "Arial 9"
1737	itk_component add background {
1738	Rappture::Combobox $inner.background -width 10 -editable no
1739	}
1740	$inner.background choices insert end \
1741	"black" "black" \
1742	"white" "white" \
1743	"grey" "grey"
1744
1745	$itk_component(background) value $_settings(-background)
1746	bind $inner.background <<Value>> \
1747	[itcl::code $this AdjustSetting -background]
1748
1749	blt::table $inner \
1750	0,0 $inner.axes -cspan 2 -anchor w \
1751	1,0 $inner.grid -cspan 2 -anchor w \
1752	2,0 $inner.outline -cspan 2 -anchor w \
1753	3,0 $inner.volume -cspan 2 -anchor w \
1754	4,0 $inner.legend -cspan 2 -anchor w \
1755	5,0 $inner.background_l -anchor e -pady 2 \
1756	5,1 $inner.background -fill x
1757
1758	blt::table configure $inner r* -resize none
1759	blt::table configure $inner r6 -resize expand
1760	}
1761
1762	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1763	set inner [$itk_component(main) insert end \
1764	-title "Volume Settings" \
1765	-icon [Rappture::icon volume-on]]
1766	$inner configure -borderwidth 4
1767
1768	set fg [option get $itk_component(hull) font Font]
1769	#set bfg [option get $itk_component(hull) boldFont Font]
1770
1771	checkbutton $inner.vol -text "Show volume" -font $fg \
1772	-variable [itcl::scope _settings(-volume)] \
1773	-command [itcl::code $this AdjustSetting -volume]
1774	label $inner.shading -text "Shading:" -font $fg
1775
1776	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1777	-variable [itcl::scope _settings(-light2side)] \
1778	-command [itcl::code $this AdjustSetting -light2side]
1779
1780	label $inner.dim -text "Glow" -font $fg
1781	::scale $inner.light -from 0 -to 100 -orient horizontal \
1782	-variable [itcl::scope _settings(-light)] \
1783	-width 10 \
1784	-showvalue off -command [itcl::code $this AdjustSetting -light]
1785	label $inner.bright -text "Surface" -font $fg
1786
1787	label $inner.clear -text "Clear" -font $fg
1788	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1789	-variable [itcl::scope _settings(-opacity)] \
1790	-width 10 \
1791	-showvalue off -command [itcl::code $this AdjustSetting -opacity]
1792	label $inner.opaque -text "Opaque" -font $fg
1793
1794	label $inner.thin -text "Thin" -font $fg
1795	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1796	-variable [itcl::scope _settings(-thickness)] \
1797	-width 10 \
1798	-showvalue off -command [itcl::code $this AdjustSetting -thickness]
1799	label $inner.thick -text "Thick" -font $fg
1800
1801	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1802	itk_component add colormap {
1803	Rappture::Combobox $inner.colormap -width 10 -editable no
1804	}
1805
1806	$inner.colormap choices insert end [GetColormapList -includeNone]
1807	$itk_component(colormap) value "BCGYR"
1808	bind $inner.colormap <<Value>> \
1809	[itcl::code $this AdjustSetting -colormap]
1810
1811	blt::table $inner \
1812	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1813	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1814	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1815	3,0 $inner.dim -anchor e -pady 2 \
1816	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1817	3,3 $inner.bright -anchor w -pady 2 \
1818	4,0 $inner.clear -anchor e -pady 2 \
1819	4,1 $inner.opacity -cspan 2 -pady 2 -fill x \
1820	4,3 $inner.opaque -anchor w -pady 2 \
1821	5,0 $inner.thin -anchor e -pady 2 \
1822	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1823	5,3 $inner.thick -anchor w -pady 2
1824
1825	blt::table configure $inner c0 c1 c3 r* -resize none
1826	blt::table configure $inner r6 -resize expand
1827	}
1828
1829	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1830	set inner [$itk_component(main) insert end \
1831	-title "Cutplane Settings" \
1832	-icon [Rappture::icon cutbutton]]
1833	$inner configure -borderwidth 4
1834
1835	checkbutton $inner.visible \
1836	-text "Show Cutplanes" \
1837	-variable [itcl::scope _settings(-cutplanesvisible)] \
1838	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1839	-font "Arial 9"
1840
1841	# X-value slicer...
1842	itk_component add xCutButton {
1843	Rappture::PushButton $inner.xbutton \
1844	-onimage [Rappture::icon x-cutplane] \
1845	-offimage [Rappture::icon x-cutplane] \
1846	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1847	-variable [itcl::scope _settings(-xcutplanevisible)]
1848	}
1849	Rappture::Tooltip::for $itk_component(xCutButton) \
1850	"Toggle the X cut plane on/off"
1851	#$itk_component(xCutButton) select
1852
1853	itk_component add xCutScale {
1854	::scale $inner.xval -from 100 -to 0 \
1855	-width 10 -orient vertical -showvalue off \
1856	-borderwidth 1 -highlightthickness 0 \
1857	-command [itcl::code $this Slice move x] \
1858	-variable [itcl::scope _settings(-xcutplaneposition)]
1859	} {
1860	usual
1861	ignore -borderwidth -highlightthickness
1862	}
1863	# Set the default cutplane value before disabling the scale.
1864	$itk_component(xCutScale) set 50
1865	$itk_component(xCutScale) configure -state disabled
1866	Rappture::Tooltip::for $itk_component(xCutScale) \
1867	"@[itcl::code $this SlicerTip x]"
1868
1869	# Y-value slicer...
1870	itk_component add yCutButton {
1871	Rappture::PushButton $inner.ybutton \
1872	-onimage [Rappture::icon y-cutplane] \
1873	-offimage [Rappture::icon y-cutplane] \
1874	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1875	-variable [itcl::scope _settings(-ycutplanevisible)]
1876	}
1877	Rappture::Tooltip::for $itk_component(yCutButton) \
1878	"Toggle the Y cut plane on/off"
1879	#$itk_component(yCutButton) select
1880
1881	itk_component add yCutScale {
1882	::scale $inner.yval -from 100 -to 0 \
1883	-width 10 -orient vertical -showvalue off \
1884	-borderwidth 1 -highlightthickness 0 \
1885	-command [itcl::code $this Slice move y] \
1886	-variable [itcl::scope _settings(-ycutplaneposition)]
1887	} {
1888	usual
1889	ignore -borderwidth -highlightthickness
1890	}
1891	Rappture::Tooltip::for $itk_component(yCutScale) \
1892	"@[itcl::code $this SlicerTip y]"
1893	# Set the default cutplane value before disabling the scale.
1894	$itk_component(yCutScale) set 50
1895	$itk_component(yCutScale) configure -state disabled
1896
1897	# Z-value slicer...
1898	itk_component add zCutButton {
1899	Rappture::PushButton $inner.zbutton \
1900	-onimage [Rappture::icon z-cutplane] \
1901	-offimage [Rappture::icon z-cutplane] \
1902	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1903	-variable [itcl::scope _settings(-zcutplanevisible)]
1904	}
1905	Rappture::Tooltip::for $itk_component(zCutButton) \
1906	"Toggle the Z cut plane on/off"
1907	#$itk_component(zCutButton) select
1908
1909	itk_component add zCutScale {
1910	::scale $inner.zval -from 100 -to 0 \
1911	-width 10 -orient vertical -showvalue off \
1912	-borderwidth 1 -highlightthickness 0 \
1913	-command [itcl::code $this Slice move z] \
1914	-variable [itcl::scope _settings(-zcutplaneposition)]
1915	} {
1916	usual
1917	ignore -borderwidth -highlightthickness
1918	}
1919	$itk_component(zCutScale) set 50
1920	$itk_component(zCutScale) configure -state disabled
1921	Rappture::Tooltip::for $itk_component(zCutScale) \
1922	"@[itcl::code $this SlicerTip z]"
1923
1924	blt::table $inner \
1925	0,1 $itk_component(xCutScale) \
1926	0,2 $itk_component(yCutScale) \
1927	0,3 $itk_component(zCutScale) \
1928	1,1 $itk_component(xCutButton) \
1929	1,2 $itk_component(yCutButton) \
1930	1,3 $itk_component(zCutButton)
1931
1932	# 0,1 $inner.visible -anchor w -pady 2 -cspan 4 \
1933
1934	blt::table configure $inner r0 r1 r2 c* -resize none
1935	blt::table configure $inner r3 c4 -resize expand
1936	blt::table configure $inner c0 -width 2
1937	blt::table configure $inner c1 c2 c3 -padx 2
1938	}
1939
1940	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1941	set inner [$itk_component(main) insert end \
1942	-title "Camera Settings" \
1943	-icon [Rappture::icon camera]]
1944	$inner configure -borderwidth 4
1945
1946	label $inner.view_l -text "view" -font "Arial 9"
1947	set f [frame $inner.view]
1948	foreach side { front back left right top bottom } {
1949	button $f.$side -image [Rappture::icon view$side] \
1950	-command [itcl::code $this SetOrientation $side]
1951	Rappture::Tooltip::for $f.$side "Change the view to $side"
1952	pack $f.$side -side left
1953	}
1954
1955	blt::table $inner \
1956	0,0 $inner.view_l -anchor e -pady 2 \
1957	0,1 $inner.view -anchor w -pady 2
1958	blt::table configure $inner r0 -resize none
1959
1960	set row 1
1961	set labels { qw qx qy qz xpan ypan zoom }
1962	foreach tag $labels {
1963	label $inner.${tag}label -text $tag -font "Arial 9"
1964	entry $inner.${tag} -font "Arial 9" -bg white \
1965	-textvariable [itcl::scope _settings(-$tag)]
1966	bind $inner.${tag} <Return> \
1967	[itcl::code $this camera set -${tag}]
1968	bind $inner.${tag} <KP_Enter> \
1969	[itcl::code $this camera set -${tag}]
1970	blt::table $inner \
1971	$row,0 $inner.${tag}label -anchor e -pady 2 \
1972	$row,1 $inner.${tag} -anchor w -pady 2
1973	blt::table configure $inner r$row -resize none
1974	incr row
1975	}
1976
1977	blt::table configure $inner c* -resize none
1978	blt::table configure $inner c2 -resize expand
1979	blt::table configure $inner r$row -resize expand
1980	}
1981
1982	# ----------------------------------------------------------------------
1983	# USAGE: Slice move x\|y\|z <newval>
1984	#
1985	# Called automatically when the user drags the slider to move the
1986	# cut plane that slices 3D data. Gets the current value from the
1987	# slider and moves the cut plane to the appropriate point in the
1988	# data set.
1989	# ----------------------------------------------------------------------
1990	itcl::body Rappture::NanovisViewer::Slice {option args} {
1991	switch -- $option {
1992	move {
1993	if {[llength $args] != 2} {
1994	error "wrong # args: should be \"Slice move x\|y\|z newval\""
1995	}
1996	set axis [lindex $args 0]
1997	set newval [lindex $args 1]
1998
1999	set newpos [expr {0.01*$newval}]
2000	set datasets [CurrentDatasets -cutplanes]
2001	set tag [lindex $datasets 0]
2002	SendCmd "cutplane position $newpos $axis $tag"
2003	}
2004	default {
2005	error "bad option \"$option\": should be axis, move, or volume"
2006	}
2007	}
2008	}
2009
2010	# ----------------------------------------------------------------------
2011	# USAGE: SlicerTip <axis>
2012	#
2013	# Used internally to generate a tooltip for the x/y/z slicer controls.
2014	# Returns a message that includes the current slicer value.
2015	# ----------------------------------------------------------------------
2016	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
2017	set val [$itk_component(${axis}CutScale) get]
2018	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2019	}
2020
2021	itcl::body Rappture::NanovisViewer::DoResize {} {
2022	$_arcball resize $_width $_height
2023	SendCmd "screen size $_width $_height"
2024	set _resizePending 0
2025	}
2026
2027	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
2028	set _width $w
2029	set _height $h
2030	$_arcball resize $w $h
2031	if { !$_resizePending } {
2032	$_dispatcher event -idle !resize
2033	set _resizePending 1
2034	}
2035	}
2036
2037	itcl::body Rappture::NanovisViewer::EventuallyRedrawLegend {} {
2038	if { !$_resizeLegendPending } {
2039	$_dispatcher event -idle !legend
2040	set _resizeLegendPending 1
2041	}
2042	}
2043
2044	# camera --
2045	#
2046	itcl::body Rappture::NanovisViewer::camera {option args} {
2047	switch -- $option {
2048	"show" {
2049	puts [array get _view]
2050	}
2051	"set" {
2052	set what [lindex $args 0]
2053	set x $_settings($what)
2054	set code [catch { string is double $x } result]
2055	if { $code != 0 \|\| !$result } {
2056	set _settings($what) $_view($what)
2057	return
2058	}
2059	switch -- $what {
2060	"-xpan" - "-ypan" {
2061	set _view($what) $_settings($what)
2062	PanCamera
2063	}
2064	"-qx" - "-qy" - "-qz" - "-qw" {
2065	set _view($what) $_settings($what)
2066	set q [ViewToQuaternion]
2067	$_arcball quaternion $q
2068	SendCmd "camera orient $q"
2069	}
2070	"-zoom" {
2071	set _view($what) $_settings($what)
2072	SendCmd "camera zoom $_view($what)"
2073	}
2074	}
2075	}
2076	}
2077	}
2078
2079	itcl::body Rappture::NanovisViewer::GetVtkData { args } {
2080	# FIXME: We can only put one component of one dataset in a single
2081	# VTK file. To download all components/results, we would need
2082	# to put them in an archive (e.g. zip or tar file)
2083	if { $_first != "" && $_current != "" } {
2084	set bytes [$_first vtkdata $_current]
2085	return [list .vtk $bytes]
2086	}
2087	puts stderr "Failed to get vtkdata"
2088	return ""
2089	}
2090
2091	itcl::body Rappture::NanovisViewer::GetImage { args } {
2092	if { [image width $_image(download)] > 0 &&
2093	[image height $_image(download)] > 0 } {
2094	set bytes [$_image(download) data -format "jpeg -quality 100"]
2095	set bytes [Rappture::encoding::decode -as b64 $bytes]
2096	return [list .jpg $bytes]
2097	}
2098	return ""
2099	}
2100
2101	itcl::body Rappture::NanovisViewer::BuildDownloadPopup { popup command } {
2102	Rappture::Balloon $popup \
2103	-title "[Rappture::filexfer::label downloadWord] as..."
2104	set inner [$popup component inner]
2105	label $inner.summary -text "" -anchor w
2106
2107	radiobutton $inner.vtk_button -text "VTK data file" \
2108	-variable [itcl::scope _downloadPopup(format)] \
2109	-font "Arial 9" \
2110	-value vtk
2111	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2112
2113	radiobutton $inner.image_button -text "Image File" \
2114	-variable [itcl::scope _downloadPopup(format)] \
2115	-font "Arial 9 " \
2116	-value image
2117	Rappture::Tooltip::for $inner.image_button \
2118	"Save as digital image."
2119
2120	button $inner.ok -text "Save" \
2121	-highlightthickness 0 -pady 2 -padx 3 \
2122	-command $command \
2123	-compound left \
2124	-image [Rappture::icon download]
2125
2126	button $inner.cancel -text "Cancel" \
2127	-highlightthickness 0 -pady 2 -padx 3 \
2128	-command [list $popup deactivate] \
2129	-compound left \
2130	-image [Rappture::icon cancel]
2131
2132	blt::table $inner \
2133	0,0 $inner.summary -cspan 2 \
2134	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2135	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2136	4,1 $inner.cancel -width .9i -fill y \
2137	4,0 $inner.ok -padx 2 -width .9i -fill y
2138	blt::table configure $inner r3 -height 4
2139	blt::table configure $inner r4 -pady 4
2140	raise $inner.image_button
2141	$inner.vtk_button invoke
2142	return $inner
2143	}
2144
2145	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2146	array set positions {
2147	front "1 0 0 0"
2148	back "0 0 1 0"
2149	left "0.707107 0 -0.707107 0"
2150	right "0.707107 0 0.707107 0"
2151	top "0.707107 -0.707107 0 0"
2152	bottom "0.707107 0.707107 0 0"
2153	}
2154	foreach name { -qw -qx -qy -qz } value $positions($side) {
2155	set _view($name) $value
2156	}
2157	set q [ViewToQuaternion]
2158	$_arcball quaternion $q
2159	SendCmd "camera orient $q"
2160	SendCmd "camera reset"
2161	set _view(-xpan) 0
2162	set _view(-ypan) 0
2163	set _view(-zoom) 1.0
2164	set _settings(-xpan) $_view(-xpan)
2165	set _settings(-ypan) $_view(-ypan)
2166	set _settings(-zoom) $_view(-zoom)
2167	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats: