Context Navigation

source: branches/1.6/gui/scripts/nanovisviewer.tcl @ 6265

Last change on this file since 6265 was 6265, checked in by ldelgass, 8 years ago
merge r6259:6260 from trunk
File size: 76.3 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) 2004-2016 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 { args } {
45	Rappture::VisViewer::constructor
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 {args} {
153	set _serverType "nanovis"
154
155	#DebugOn
156	EnableWaitDialog 900
157
158	# Rebuild event
159	$_dispatcher register !rebuild
160	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
161
162	# Resize event
163	$_dispatcher register !resize
164	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
165
166	# Legend event
167	$_dispatcher register !legend
168	$_dispatcher dispatch $this !legend "[itcl::code $this FixLegend]; list"
169
170	# Send transfer functions event
171	$_dispatcher register !send_transfunc
172	$_dispatcher dispatch $this !send_transfunc \
173	"[itcl::code $this SendTransferFunctions]; list"
174
175	#
176	# Populate parser with commands handle incoming requests
177	#
178	$_parser alias image [itcl::code $this ReceiveImage]
179	$_parser alias legend [itcl::code $this ReceiveLegend]
180	$_parser alias data [itcl::code $this ReceiveData]
181
182	# Initialize the view to some default parameters.
183	array set _view {
184	-qw 0.853553
185	-qx -0.353553
186	-qy 0.353553
187	-qz 0.146447
188	-xpan 0
189	-ypan 0
190	-zoom 1.0
191	}
192	set _arcball [blt::arcball create 100 100]
193	$_arcball quaternion [ViewToQuaternion]
194
195	set _limits(vmin) 0.0
196	set _limits(vmax) 1.0
197
198	array set _settings [subst {
199	-axesvisible 1
200	-background black
201	-colormap "BCGYR"
202	-cutplanesvisible 0
203	-gridvisible 0
204	-isosurfaceshading 0
205	-legendvisible 1
206	-light 40
207	-light2side 1
208	-opacity 50
209	-outlinevisible 0
210	-qw $_view(-qw)
211	-qx $_view(-qx)
212	-qy $_view(-qy)
213	-qz $_view(-qz)
214	-thickness 350
215	-volume 1
216	-xcutplaneposition 50
217	-xcutplanevisible 0
218	-xpan $_view(-xpan)
219	-ycutplaneposition 50
220	-ycutplanevisible 0
221	-ypan $_view(-ypan)
222	-zcutplaneposition 50
223	-zcutplanevisible 0
224	-zoom $_view(-zoom)
225	}]
226
227	itk_component add view {
228	label $itk_component(plotarea).view -image $_image(plot) \
229	-highlightthickness 0 -borderwidth 0
230	} {
231	usual
232	ignore -highlightthickness -borderwidth -background
233	}
234	bind $itk_component(view) <Control-F1> [itcl::code $this ToggleConsole]
235
236	set f [$itk_component(main) component controls]
237	itk_component add reset {
238	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
239	-highlightthickness 0 \
240	-image [Rappture::icon reset-view] \
241	-command [itcl::code $this Zoom reset]
242	} {
243	usual
244	ignore -highlightthickness
245	}
246	pack $itk_component(reset) -side top -padx 2 -pady 2
247	Rappture::Tooltip::for $itk_component(reset) \
248	"Reset the view to the default zoom level"
249
250	itk_component add zoomin {
251	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
252	-highlightthickness 0 \
253	-image [Rappture::icon zoom-in] \
254	-command [itcl::code $this Zoom in]
255	} {
256	usual
257	ignore -highlightthickness
258	}
259	pack $itk_component(zoomin) -side top -padx 2 -pady 2
260	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
261
262	itk_component add zoomout {
263	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
264	-highlightthickness 0 \
265	-image [Rappture::icon zoom-out] \
266	-command [itcl::code $this Zoom out]
267	} {
268	usual
269	ignore -highlightthickness
270	}
271	pack $itk_component(zoomout) -side top -padx 2 -pady 2
272	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
273
274	itk_component add volume {
275	Rappture::PushButton $f.volume \
276	-onimage [Rappture::icon volume-on] \
277	-offimage [Rappture::icon volume-off] \
278	-variable [itcl::scope _settings(-volume)] \
279	-command [itcl::code $this AdjustSetting -volume]
280	}
281	$itk_component(volume) select
282	Rappture::Tooltip::for $itk_component(volume) \
283	"Toggle the volume cloud on/off"
284	pack $itk_component(volume) -padx 2 -pady 2
285
286	itk_component add cutplane {
287	Rappture::PushButton $f.cutplane \
288	-onimage [Rappture::icon cutbutton] \
289	-offimage [Rappture::icon cutbutton] \
290	-variable [itcl::scope _settings(-cutplanesvisible)] \
291	-command [itcl::code $this AdjustSetting -cutplanesvisible]
292	}
293	Rappture::Tooltip::for $itk_component(cutplane) \
294	"Show/Hide cutplanes"
295	#pack $itk_component(cutplane) -padx 2 -pady 2
296
297	if { [catch {
298	BuildViewTab
299	BuildVolumeTab
300	BuildCutplanesTab
301	BuildCameraTab
302	} errs] != 0 } {
303	global errorInfo
304	puts stderr "errs=$errs errorInfo=$errorInfo"
305	}
306
307	# Legend
308	set _image(legend) [image create photo]
309	itk_component add legend {
310	canvas $itk_component(plotarea).legend -height 50 -highlightthickness 0
311	} {
312	usual
313	ignore -highlightthickness
314	rename -background -plotbackground plotBackground Background
315	}
316	bind $itk_component(legend) <Configure> \
317	[itcl::code $this EventuallyRedrawLegend]
318
319	# Hack around the Tk panewindow. The problem is that the requested
320	# size of the 3d view isn't set until an image is retrieved from
321	# the server. So the panewindow uses the tiny size.
322	set w 10000
323	pack forget $itk_component(view)
324	blt::table $itk_component(plotarea) \
325	0,0 $itk_component(view) -fill both -reqwidth $w \
326	1,0 $itk_component(legend) -fill x
327	blt::table configure $itk_component(plotarea) r1 -resize none
328
329	# Bindings for rotation via mouse
330	bind $itk_component(view) <ButtonPress-1> \
331	[itcl::code $this Rotate click %x %y]
332	bind $itk_component(view) <B1-Motion> \
333	[itcl::code $this Rotate drag %x %y]
334	bind $itk_component(view) <ButtonRelease-1> \
335	[itcl::code $this Rotate release %x %y]
336	bind $itk_component(view) <Configure> \
337	[itcl::code $this EventuallyResize %w %h]
338
339	# Bindings for panning via mouse
340	bind $itk_component(view) <ButtonPress-2> \
341	[itcl::code $this Pan click %x %y]
342	bind $itk_component(view) <B2-Motion> \
343	[itcl::code $this Pan drag %x %y]
344	bind $itk_component(view) <ButtonRelease-2> \
345	[itcl::code $this Pan release %x %y]
346
347	# Bindings for panning via keyboard
348	bind $itk_component(view) <KeyPress-Left> \
349	[itcl::code $this Pan set -10 0]
350	bind $itk_component(view) <KeyPress-Right> \
351	[itcl::code $this Pan set 10 0]
352	bind $itk_component(view) <KeyPress-Up> \
353	[itcl::code $this Pan set 0 -10]
354	bind $itk_component(view) <KeyPress-Down> \
355	[itcl::code $this Pan set 0 10]
356	bind $itk_component(view) <Shift-KeyPress-Left> \
357	[itcl::code $this Pan set -2 0]
358	bind $itk_component(view) <Shift-KeyPress-Right> \
359	[itcl::code $this Pan set 2 0]
360	bind $itk_component(view) <Shift-KeyPress-Up> \
361	[itcl::code $this Pan set 0 -2]
362	bind $itk_component(view) <Shift-KeyPress-Down> \
363	[itcl::code $this Pan set 0 2]
364
365	# Bindings for zoom via keyboard
366	bind $itk_component(view) <KeyPress-Prior> \
367	[itcl::code $this Zoom out]
368	bind $itk_component(view) <KeyPress-Next> \
369	[itcl::code $this Zoom in]
370
371	bind $itk_component(view) <Enter> "focus $itk_component(view)"
372
373	if {[string equal "x11" [tk windowingsystem]]} {
374	# Bindings for zoom via mouse
375	bind $itk_component(view) <4> [itcl::code $this Zoom out]
376	bind $itk_component(view) <5> [itcl::code $this Zoom in]
377	}
378
379	set _image(download) [image create photo]
380
381	eval itk_initialize $args
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 view\|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 view\|legend\""
468	}
469	switch -- [lindex $args end] {
470	view {
471	return $_image(plot)
472	}
473	legend {
474	return $_image(legend)
475	}
476	default {
477	error "bad image name \"[lindex $args end]\": should be view or legend"
478	}
479	}
480	}
481	default {
482	error "bad option \"$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	itcl::body Rappture::NanovisViewer::delete {args} {
495	if {[llength $args] == 0} {
496	set args $_dlist
497	}
498	# Delete all specified dataobjs
499	set changed 0
500	foreach dataobj $args {
501	set pos [lsearch -exact $_dlist $dataobj]
502	if { $pos >= 0 } {
503	set _dlist [lreplace $_dlist $pos $pos]
504	array unset _limits $dataobj*
505	array unset _obj2ovride $dataobj-*
506	set changed 1
507	}
508	}
509	# If anything changed, then rebuild the plot
510	if {$changed} {
511	$_dispatcher event -idle !rebuild
512	}
513	}
514
515	# ----------------------------------------------------------------------
516	# USAGE: scale ?<data1> <data2> ...?
517	#
518	# Sets the default limits for the overall plot according to the
519	# limits of the data for all of the given <data> objects. This
520	# accounts for all objects--even those not showing on the screen.
521	# Because of this, the limits are appropriate for all objects as
522	# the user scans through data in the ResultSet viewer.
523	# ----------------------------------------------------------------------
524	itcl::body Rappture::NanovisViewer::scale {args} {
525	foreach val {xmin xmax ymin ymax zmin zmax vmin vmax} {
526	set _limits($val) ""
527	}
528	foreach dataobj $args {
529	if { ![$dataobj isvalid] } {
530	continue; # Object doesn't contain valid data.
531	}
532	foreach axis {x y z v} {
533	foreach { min max } [$dataobj limits $axis] break
534	if {"" != $min && "" != $max} {
535	if {"" == $_limits(${axis}min)} {
536	set _limits(${axis}min) $min
537	set _limits(${axis}max) $max
538	} else {
539	if {$min < $_limits(${axis}min)} {
540	set _limits(${axis}min) $min
541	}
542	if {$max > $_limits(${axis}max)} {
543	set _limits(${axis}max) $max
544	}
545	}
546	}
547	}
548	}
549	}
550
551	# ----------------------------------------------------------------------
552	# USAGE: download coming
553	# USAGE: download controls <downloadCommand>
554	# USAGE: download now
555	#
556	# Clients use this method to create a downloadable representation
557	# of the plot. Returns a list of the form {ext string}, where
558	# "ext" is the file extension (indicating the type of data) and
559	# "string" is the data itself.
560	# ----------------------------------------------------------------------
561	itcl::body Rappture::NanovisViewer::download {option args} {
562	switch $option {
563	coming {
564	if {[catch {
565	blt::winop snap $itk_component(plotarea) $_image(download)
566	}]} {
567	$_image(download) configure -width 1 -height 1
568	$_image(download) put #000000
569	}
570	}
571	controls {
572	set popup .nanovisviewerdownload
573	if { ![winfo exists $popup] } {
574	set inner [BuildDownloadPopup $popup [lindex $args 0]]
575	} else {
576	set inner [$popup component inner]
577	}
578	# FIXME: we only support download of current active component
579	#set num [llength [get]]
580	#set num [expr {($num == 1) ? "1 result" : "$num results"}]
581	set num "current field component"
582	set word [Rappture::filexfer::label downloadWord]
583	$inner.summary configure -text "$word $num in the following format:"
584	update idletasks ;# Fix initial sizes
585	return $popup
586	}
587	now {
588	set popup .nanovisviewerdownload
589	if { [winfo exists $popup] } {
590	$popup deactivate
591	}
592	switch -- $_downloadPopup(format) {
593	"image" {
594	return [$this GetImage [lindex $args 0]]
595	}
596	"vtk" {
597	return [$this GetVtkData [lindex $args 0]]
598	}
599	default {
600	error "bad download format \"$_downloadPopup(format)\""
601	}
602	}
603	}
604	default {
605	error "bad option \"$option\": should be coming, controls, now"
606	}
607	}
608	}
609
610	# ----------------------------------------------------------------------
611	# USAGE: Connect ?<host:port>,<host:port>...?
612	#
613	# Clients use this method to establish a connection to a new
614	# server, or to reestablish a connection to the previous server.
615	# Any existing connection is automatically closed.
616	# ----------------------------------------------------------------------
617	itcl::body Rappture::NanovisViewer::Connect {} {
618	set _hosts [GetServerList "nanovis"]
619	if { "" == $_hosts } {
620	return 0
621	}
622	set _reset 1
623	set result [VisViewer::Connect $_hosts]
624	if { $result } {
625	if { $_reportClientInfo } {
626	# Tell the server the viewer, hub, user and session.
627	# Do this immediately on connect before buffering any commands
628	global env
629
630	set info {}
631	set user "???"
632	if { [info exists env(USER)] } {
633	set user $env(USER)
634	}
635	set session "???"
636	if { [info exists env(SESSION)] } {
637	set session $env(SESSION)
638	}
639	lappend info "version" "$Rappture::version"
640	lappend info "build" "$Rappture::build"
641	lappend info "svnurl" "$Rappture::svnurl"
642	lappend info "installdir" "$Rappture::installdir"
643	lappend info "hub" [exec hostname]
644	lappend info "client" "nanovisviewer"
645	lappend info "user" $user
646	lappend info "session" $session
647	SendCmd "clientinfo [list $info]"
648	}
649
650	set w [winfo width $itk_component(view)]
651	set h [winfo height $itk_component(view)]
652	EventuallyResize $w $h
653	}
654	return $result
655	}
656
657	#
658	# isconnected --
659	#
660	# Indicates if we are currently connected to the visualization server.
661	#
662	itcl::body Rappture::NanovisViewer::isconnected {} {
663	return [VisViewer::IsConnected]
664	}
665
666	#
667	# disconnect --
668	#
669	itcl::body Rappture::NanovisViewer::disconnect {} {
670	Disconnect
671	}
672
673	#
674	# Disconnect --
675	#
676	# Clients use this method to disconnect from the current rendering 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 { $_first == "" } {
690	puts stderr "first not set"
691	return
692	}
693	# Ensure that the global thickness setting (in the slider
694	# settings widget) is used for the active transfer-function. Update
695	# the value in the _settings variable.
696	# Scale values between 0.00001 and 0.01000
697	set thickness [expr {double($_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	switch -- $info(-type) {
741	"image" {
742	#puts stderr "received image [image width $_image(plot)]x[image height $_image(plot)]"
743	$_image(plot) configure -data $bytes
744	}
745	"print" {
746	set tag $this-print-$info(-token)
747	set _hardcopy($tag) $bytes
748	}
749	default {
750	puts stderr "unknown image type $info(-type)"
751	}
752	}
753	}
754
755	#
756	# DrawLegend --
757	#
758	itcl::body Rappture::NanovisViewer::DrawLegend { tf } {
759	set c $itk_component(legend)
760	set w [winfo width $c]
761	set h [winfo height $c]
762	set lx 10
763	set ly [expr {$h - 1}]
764	if {"" == [$c find withtag colorbar]} {
765	$c create image 10 10 -anchor nw \
766	-image $_image(legend) -tags colorbar
767	$c create text $lx $ly -anchor sw \
768	-fill $itk_option(-plotforeground) -tags "limits text vmin"
769	$c create text [expr {$w-$lx}] $ly -anchor se \
770	-fill $itk_option(-plotforeground) -tags "limits text vmax"
771	$c create text [expr {$w/2}] $ly -anchor s \
772	-fill $itk_option(-plotforeground) -tags "title text"
773	$c lower colorbar
774	$c bind colorbar <ButtonRelease-1> [itcl::code $this AddIsoMarker %x %y]
775	}
776
777	# Display the markers used by the current transfer function.
778	array set limits [limits $tf]
779	$c itemconfigure vmin -text [format %g $limits(min)]
780	$c coords vmin $lx $ly
781
782	$c itemconfigure vmax -text [format %g $limits(max)]
783	$c coords vmax [expr {$w-$lx}] $ly
784
785	if { $_first == "" } {
786	return
787	}
788	set title [$_first hints label]
789	set units [$_first hints units]
790	if { $units != "" } {
791	set title "$title ($units)"
792	}
793	$c itemconfigure title -text $title
794	$c coords title [expr {$w/2}] $ly
795
796	if { [info exists _isomarkers($tf)] } {
797	foreach m $_isomarkers($tf) {
798	$m visible yes
799	}
800	}
801
802	# The colormap may have changed. Resync the slicers with the colormap.
803	set datasets [CurrentDatasets -cutplanes]
804	SendCmd "volume data state $_settings(-volume) $datasets"
805
806	# Adjust the cutplane for only the first component in the topmost volume
807	# (i.e. the first volume designated in the field).
808	set tag [lindex $datasets 0]
809	foreach axis {x y z} {
810	# Turn off cutplanes for all volumes
811	SendCmd "cutplane state 0 $axis"
812	if { $_settings(-${axis}cutplanevisible) } {
813	# Turn on cutplane for this particular volume and set the position
814	SendCmd "cutplane state 1 $axis $tag"
815	set pos [expr {0.01*$_settings(-${axis}cutplaneposition)}]
816	SendCmd "cutplane position $pos $axis $tag"
817	}
818	}
819	}
820
821	#
822	# ReceiveLegend --
823	#
824	# The procedure is the response from the render server to each "legend"
825	# command. The server sends back a "legend" command invoked our
826	# the slave interpreter. The purpose is to collect data of the image
827	# representing the legend in the canvas. In addition, the
828	# active transfer function is displayed.
829	#
830	itcl::body Rappture::NanovisViewer::ReceiveLegend { tf vmin vmax size } {
831	if { ![isconnected] } {
832	return
833	}
834	set bytes [ReceiveBytes $size]
835	$_image(legend) configure -data $bytes
836	ReceiveEcho <<line "<read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
837
838	DrawLegend $tf
839	}
840
841	#
842	# ReceiveData --
843	#
844	# The procedure is the response from the render server to each "data
845	# follows" command. The server sends back a "data" command invoked our
846	# the slave interpreter. The purpose is to collect the min/max of the
847	# volume sent to the render server. Since the client (nanovisviewer)
848	# doesn't parse 3D data formats, we rely on the server (nanovis) to
849	# tell us what the limits are. Once we've received the limits to all
850	# the data we've sent (tracked by _recvdDatasets) we can then determine
851	# what the transfer functions are for these volumes.
852	#
853	#
854	# Note: There is a considerable tradeoff in having the server report
855	# back what the data limits are. It means that much of the code
856	# having to do with transfer-functions has to wait for the data
857	# to come back, since the isomarkers are calculated based upon
858	# the data limits. The client code is much messier because of
859	# this. The alternative is to parse any of the 3D formats on the
860	# client side.
861	#
862	itcl::body Rappture::NanovisViewer::ReceiveData { args } {
863	if { ![isconnected] } {
864	return
865	}
866
867	# Arguments from server are name value pairs. Stuff them in an array.
868	array set info $args
869
870	set tag $info(tag)
871	set parts [split $tag -]
872
873	#
874	# Volumes don't exist until we're told about them.
875	#
876	set dataobj [lindex $parts 0]
877	set _serverDatasets($tag) 1
878	if { $_settings(-volume) && $dataobj == $_first } {
879	SendCmd "volume state 1 $tag"
880	}
881	set _limits($tag-min) $info(min); # Minimum value of the volume.
882	set _limits($tag-max) $info(max); # Maximum value of the volume.
883	set _limits(vmin) $info(vmin); # Overall minimum value.
884	set _limits(vmax) $info(vmax); # Overall maximum value.
885
886	unset _recvdDatasets($tag)
887	if { [array size _recvdDatasets] == 0 } {
888	# The active transfer function is by default the first component of
889	# the first data object. This assumes that the data is always
890	# successfully transferred.
891	updateTransferFunctions
892	}
893	}
894
895	# ----------------------------------------------------------------------
896	# USAGE: Rebuild
897	#
898	# Called automatically whenever something changes that affects the
899	# data in the widget. Clears any existing data and rebuilds the
900	# widget to display new data.
901	# ----------------------------------------------------------------------
902	itcl::body Rappture::NanovisViewer::Rebuild {} {
903	set w [winfo width $itk_component(view)]
904	set h [winfo height $itk_component(view)]
905	if { $w < 2 \|\| $h < 2 } {
906	update
907	$_dispatcher event -idle !rebuild
908	return
909	}
910
911	# Turn on buffering of commands to the server. We don't want to
912	# be preempted by a server disconnect/reconnect (which automatically
913	# generates a new call to Rebuild).
914	StartBufferingCommands
915
916	# Hide all the isomarkers. Can't remove them. Have to remember the
917	# settings since the user may have created/deleted/moved markers.
918
919	foreach tf [array names _isomarkers] {
920	foreach m $_isomarkers($tf) {
921	$m visible no
922	}
923	}
924
925	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
926	set _width $w
927	set _height $h
928	$_arcball resize $w $h
929	DoResize
930	}
931
932	foreach dataobj [get] {
933	foreach cname [$dataobj components] {
934	set tag $dataobj-$cname
935	if { ![info exists _serverDatasets($tag)] } {
936	# Send the data as one huge base64-encoded mess -- yuck!
937	if { [$dataobj type] == "dx" } {
938	set data [$dataobj blob $cname]
939	} else {
940	set data [$dataobj vtkdata $cname]
941	if 0 {
942	set f [open "/tmp/volume.vtk" "w"]
943	fconfigure $f -translation binary -encoding binary
944	puts -nonewline $f $data
945	close $f
946	}
947	}
948	set nbytes [string length $data]
949	if { $_reportClientInfo } {
950	set info {}
951	lappend info "tool_id" [$dataobj hints toolid]
952	lappend info "tool_name" [$dataobj hints toolname]
953	lappend info "tool_title" [$dataobj hints tooltitle]
954	lappend info "tool_command" [$dataobj hints toolcommand]
955	lappend info "tool_revision" [$dataobj hints toolrevision]
956	lappend info "dataset_label" [$dataobj hints label]
957	lappend info "dataset_size" $nbytes
958	lappend info "dataset_tag" $tag
959	SendCmd "clientinfo [list $info]"
960	}
961	SendCmd "volume data follows $nbytes $tag"
962	SendData $data
963	set _recvdDatasets($tag) 1
964	set _serverDatasets($tag) 0
965	}
966	NameTransferFunction $dataobj $cname
967	}
968	}
969	set _first [lindex [get] 0]
970	# Outline seems to need to be reset every update.
971	InitSettings -outlinevisible ;#-cutplanesvisible
972	if { $_reset } {
973	#
974	# Reset the camera and other view parameters
975	#
976	set _settings(-qw) $_view(-qw)
977	set _settings(-qx) $_view(-qx)
978	set _settings(-qy) $_view(-qy)
979	set _settings(-qz) $_view(-qz)
980	set _settings(-xpan) $_view(-xpan)
981	set _settings(-ypan) $_view(-ypan)
982	set _settings(-zoom) $_view(-zoom)
983
984	set q [ViewToQuaternion]
985	$_arcball quaternion $q
986	SendCmd "camera orient $q"
987	SendCmd "camera reset"
988	PanCamera
989	SendCmd "camera zoom $_view(-zoom)"
990
991	# Turn off cutplanes for all volumes
992	foreach axis {x y z} {
993	SendCmd "cutplane state 0 $axis"
994	}
995
996	InitSettings -axesvisible -gridvisible \
997	-light2side -isosurfaceshading -opacity \
998	-light \
999	-xcutplanevisible -ycutplanevisible -zcutplanevisible
1000
1001	if {"" != $_first} {
1002	set axis [$_first hints updir]
1003	if { "" != $axis } {
1004	SendCmd "up $axis"
1005	}
1006	set location [$_first hints camera]
1007	if { $location != "" } {
1008	array set _view $location
1009	}
1010	}
1011	set _reset 0
1012	}
1013
1014	# nothing to send -- activate the proper ivol
1015	SendCmd "volume state 0"
1016	if {"" != $_first} {
1017	set datasets [array names _serverDatasets $_first-*]
1018	if { $datasets != "" } {
1019	SendCmd "volume state 1 $datasets"
1020	}
1021	# If the first volume already exists on the server, then make sure
1022	# we display the proper transfer function in the legend.
1023	set cname [lindex [$_first components] 0]
1024	if { [info exists _serverDatasets($_first-$cname)] } {
1025	updateTransferFunctions
1026	}
1027	}
1028	# Actually write the commands to the server socket. If it fails, we don't
1029	# care. We're finished here.
1030	blt::busy hold $itk_component(hull)
1031	StopBufferingCommands
1032	blt::busy release $itk_component(hull)
1033	}
1034
1035	# ----------------------------------------------------------------------
1036	# USAGE: CurrentDatasets ?-cutplanes?
1037	#
1038	# Returns a list of volume server IDs for the current volume being
1039	# displayed. This is normally a single ID, but it might be a list
1040	# of IDs if the current data object has multiple components.
1041	# ----------------------------------------------------------------------
1042	itcl::body Rappture::NanovisViewer::CurrentDatasets {{what -all}} {
1043	set rlist ""
1044	if { $_first == "" } {
1045	return
1046	}
1047	foreach cname [$_first components] {
1048	set tag $_first-$cname
1049	if { [info exists _serverDatasets($tag)] && $_serverDatasets($tag) } {
1050	array set style {
1051	-cutplanes 1
1052	}
1053	array set style [lindex [$_first components -style $cname] 0]
1054	if { $what != "-cutplanes" \|\| $style(-cutplanes) } {
1055	lappend rlist $tag
1056	}
1057	}
1058	}
1059	return $rlist
1060	}
1061
1062	# ----------------------------------------------------------------------
1063	# USAGE: Zoom in
1064	# USAGE: Zoom out
1065	# USAGE: Zoom reset
1066	#
1067	# Called automatically when the user clicks on one of the zoom
1068	# controls for this widget. Changes the zoom for the current view.
1069	# ----------------------------------------------------------------------
1070	itcl::body Rappture::NanovisViewer::Zoom {option} {
1071	switch -- $option {
1072	"in" {
1073	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1074	set _settings(-zoom) $_view(-zoom)
1075	SendCmd "camera zoom $_view(-zoom)"
1076	}
1077	"out" {
1078	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1079	set _settings(-zoom) $_view(-zoom)
1080	SendCmd "camera zoom $_view(-zoom)"
1081	}
1082	"reset" {
1083	array set _view {
1084	-qw 0.853553
1085	-qx -0.353553
1086	-qy 0.353553
1087	-qz 0.146447
1088	-xpan 0
1089	-ypan 0
1090	-zoom 1.0
1091	}
1092	if { $_first != "" } {
1093	set location [$_first hints camera]
1094	if { $location != "" } {
1095	array set _view $location
1096	}
1097	}
1098	set q [ViewToQuaternion]
1099	$_arcball quaternion $q
1100	SendCmd "camera orient $q"
1101	SendCmd "camera reset"
1102	set _settings(-qw) $_view(-qw)
1103	set _settings(-qx) $_view(-qx)
1104	set _settings(-qy) $_view(-qy)
1105	set _settings(-qz) $_view(-qz)
1106	set _settings(-xpan) $_view(-xpan)
1107	set _settings(-ypan) $_view(-ypan)
1108	set _settings(-zoom) $_view(-zoom)
1109	}
1110	}
1111	}
1112
1113	itcl::body Rappture::NanovisViewer::PanCamera {} {
1114	set x $_view(-xpan)
1115	set y $_view(-ypan)
1116	SendCmd "camera pan $x $y"
1117	}
1118
1119	# ----------------------------------------------------------------------
1120	# USAGE: Rotate click <x> <y>
1121	# USAGE: Rotate drag <x> <y>
1122	# USAGE: Rotate release <x> <y>
1123	#
1124	# Called automatically when the user clicks/drags/releases in the
1125	# plot area. Moves the plot according to the user's actions.
1126	# ----------------------------------------------------------------------
1127	itcl::body Rappture::NanovisViewer::Rotate {option x y} {
1128	switch -- $option {
1129	click {
1130	$itk_component(view) configure -cursor fleur
1131	set _click(x) $x
1132	set _click(y) $y
1133	}
1134	drag {
1135	if {[array size _click] == 0} {
1136	Rotate click $x $y
1137	} else {
1138	set w [winfo width $itk_component(view)]
1139	set h [winfo height $itk_component(view)]
1140	if {$w <= 0 \|\| $h <= 0} {
1141	return
1142	}
1143
1144	if {[catch {
1145	# this fails sometimes for no apparent reason
1146	set dx [expr {double($x-$_click(x))/$w}]
1147	set dy [expr {double($y-$_click(y))/$h}]
1148	}]} {
1149	return
1150	}
1151
1152	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1153	QuaternionToView $q
1154	set _settings(-qw) $_view(-qw)
1155	set _settings(-qx) $_view(-qx)
1156	set _settings(-qy) $_view(-qy)
1157	set _settings(-qz) $_view(-qz)
1158	SendCmd "camera orient $q"
1159
1160	set _click(x) $x
1161	set _click(y) $y
1162	}
1163	}
1164	release {
1165	Rotate drag $x $y
1166	$itk_component(view) configure -cursor ""
1167	catch {unset _click}
1168	}
1169	default {
1170	error "bad option \"$option\": should be click, drag, release"
1171	}
1172	}
1173	}
1174
1175	# ----------------------------------------------------------------------
1176	# USAGE: $this Pan click x y
1177	# $this Pan drag x y
1178	# $this Pan release x y
1179	#
1180	# Called automatically when the user clicks on one of the zoom
1181	# controls for this widget. Changes the zoom for the current view.
1182	# ----------------------------------------------------------------------
1183	itcl::body Rappture::NanovisViewer::Pan {option x y} {
1184	# Experimental stuff
1185	set w [winfo width $itk_component(view)]
1186	set h [winfo height $itk_component(view)]
1187	if { $option == "set" } {
1188	set x [expr $x / double($w)]
1189	set y [expr $y / double($h)]
1190	set _view(-xpan) [expr $_view(-xpan) + $x]
1191	set _view(-ypan) [expr $_view(-ypan) + $y]
1192	PanCamera
1193	set _settings(-xpan) $_view(-xpan)
1194	set _settings(-ypan) $_view(-ypan)
1195	return
1196	}
1197	if { $option == "click" } {
1198	set _click(x) $x
1199	set _click(y) $y
1200	$itk_component(view) configure -cursor hand1
1201	}
1202	if { $option == "drag" \|\| $option == "release" } {
1203	set dx [expr ($_click(x) - $x)/double($w)]
1204	set dy [expr ($_click(y) - $y)/double($h)]
1205	set _click(x) $x
1206	set _click(y) $y
1207	set _view(-xpan) [expr $_view(-xpan) - $dx]
1208	set _view(-ypan) [expr $_view(-ypan) - $dy]
1209	PanCamera
1210	set _settings(-xpan) $_view(-xpan)
1211	set _settings(-ypan) $_view(-ypan)
1212	}
1213	if { $option == "release" } {
1214	$itk_component(view) configure -cursor ""
1215	}
1216	}
1217
1218	# ----------------------------------------------------------------------
1219	# USAGE: InitSettings <what> ?<value>?
1220	#
1221	# Used internally to update rendering settings whenever parameters
1222	# change in the popup settings panel. Sends the new settings off
1223	# to the back end.
1224	# ----------------------------------------------------------------------
1225	itcl::body Rappture::NanovisViewer::InitSettings { args } {
1226	foreach arg $args {
1227	AdjustSetting $arg
1228	}
1229	}
1230
1231	# ----------------------------------------------------------------------
1232	# USAGE: AdjustSetting <what> ?<value>?
1233	#
1234	# Used internally to update rendering settings whenever parameters
1235	# change in the popup settings panel. Sends the new settings off
1236	# to the back end.
1237	# ----------------------------------------------------------------------
1238	itcl::body Rappture::NanovisViewer::AdjustSetting {what {value ""}} {
1239	if {![isconnected]} {
1240	return
1241	}
1242	switch -- $what {
1243	"-axesvisible" {
1244	SendCmd "axis visible $_settings($what)"
1245	}
1246	"-background" {
1247	set bgcolor [$itk_component(background) value]
1248	array set fgcolors {
1249	"black" "white"
1250	"white" "black"
1251	"grey" "black"
1252	}
1253	configure -plotbackground $bgcolor \
1254	-plotforeground $fgcolors($bgcolor)
1255	#DrawLegend $_current
1256	}
1257	"-colormap" {
1258	set color [$itk_component(colormap) value]
1259	set _settings($what) $color
1260	# Only set the colormap on the first volume. Ignore the others.
1261	#ResetColormap $color
1262	}
1263	"-cutplanesvisible" {
1264	set bool $_settings($what)
1265	# We only set cutplanes on the first dataset.
1266	set datasets [CurrentDatasets -cutplanes]
1267	set tag [lindex $datasets 0]
1268	SendCmd "cutplane visible $bool $tag"
1269	}
1270	"-gridvisible" {
1271	SendCmd "grid visible $_settings($what)"
1272	}
1273	"-isosurfaceshading" {
1274	set val $_settings($what)
1275	SendCmd "volume shading isosurface $val"
1276	}
1277	"-legendvisible" {
1278	if { $_settings($what) } {
1279	blt::table $itk_component(plotarea) \
1280	0,0 $itk_component(view) -fill both \
1281	1,0 $itk_component(legend) -fill x
1282	blt::table configure $itk_component(plotarea) r1 -resize none
1283	} else {
1284	blt::table forget $itk_component(legend)
1285	}
1286	}
1287	"-light" {
1288	set val $_settings($what)
1289	set diffuse [expr {0.01*$val}]
1290	set ambient [expr {1.0-$diffuse}]
1291	set specularLevel 0.3
1292	set specularExp 90.0
1293	SendCmd "volume shading ambient $ambient"
1294	SendCmd "volume shading diffuse $diffuse"
1295	SendCmd "volume shading specularLevel $specularLevel"
1296	SendCmd "volume shading specularExp $specularExp"
1297	}
1298	"-light2side" {
1299	set val $_settings($what)
1300	SendCmd "volume shading light2side $val"
1301	}
1302	"-opacity" {
1303	set val $_settings($what)
1304	set sval [expr { 0.01 * double($val) }]
1305	SendCmd "volume shading opacity $sval"
1306	}
1307	"-outlinevisible" {
1308	SendCmd "volume outline state $_settings($what)"
1309	}
1310	"-thickness" {
1311	if { [array names _activeTfs] > 0 } {
1312	set val $_settings($what)
1313	# Scale values between 0.00001 and 0.01000
1314	set sval [expr {0.0001*double($val)}]
1315	foreach tf [array names _activeTfs] {
1316	set _settings($tf${what}) $sval
1317	set _activeTfs($tf) 0
1318	}
1319	updateTransferFunctions
1320	}
1321	}
1322	"-volume" {
1323	set datasets [CurrentDatasets -cutplanes]
1324	SendCmd "volume data state $_settings($what) $datasets"
1325	}
1326	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
1327	set axis [string range $what 1 1]
1328	set pos [expr $_settings($what) * 0.01]
1329	# We only set cutplanes on the first dataset.
1330	set datasets [CurrentDatasets -cutplanes]
1331	set tag [lindex $datasets 0]
1332	SendCmd "cutplane position $pos $axis $tag"
1333	}
1334	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
1335	set axis [string range $what 1 1]
1336	set bool $_settings($what)
1337	# We only set cutplanes on the first dataset.
1338	set datasets [CurrentDatasets -cutplanes]
1339	set tag [lindex $datasets 0]
1340	SendCmd "cutplane state $bool $axis $tag"
1341	if { $bool } {
1342	$itk_component(${axis}CutScale) configure -state normal \
1343	-troughcolor white
1344	} else {
1345	$itk_component(${axis}CutScale) configure -state disabled \
1346	-troughcolor grey82
1347	}
1348	}
1349	default {
1350	error "don't know how to fix $what"
1351	}
1352	}
1353	}
1354
1355	# ----------------------------------------------------------------------
1356	# USAGE: FixLegend
1357	#
1358	# Used internally to update the legend area whenever it changes size
1359	# or when the field changes. Asks the server to send a new legend
1360	# for the current field.
1361	# ----------------------------------------------------------------------
1362	itcl::body Rappture::NanovisViewer::FixLegend {} {
1363	set _resizeLegendPending 0
1364	set lineht [font metrics $itk_option(-font) -linespace]
1365	set w [expr {$_width-20}]
1366	set h [expr {[winfo height $itk_component(legend)]-20-$lineht}]
1367	if {$w > 0 && $h > 0 && [array names _activeTfs] > 0 && $_first != "" } {
1368	set tag [lindex [CurrentDatasets] 0]
1369	if { [info exists _dataset2style($tag)] } {
1370	SendCmd "legend $_dataset2style($tag) $w $h"
1371	}
1372	}
1373	}
1374
1375	#
1376	# NameTransferFunction --
1377	#
1378	# Creates a transfer function name based on the <style> settings in the
1379	# library run.xml file. This placeholder will be used later to create
1380	# and send the actual transfer function once the data info has been sent
1381	# to us by the render server. [We won't know the volume limits until the
1382	# server parses the 3D data and sends back the limits via ReceiveData.]
1383	#
1384	# FIXME: The current way we generate transfer-function names completely
1385	# ignores the -markers option. The problem is that we are forced
1386	# to compute the name from an increasing complex set of values:
1387	# color, levels, markers.
1388	#
1389	itcl::body Rappture::NanovisViewer::NameTransferFunction { dataobj cname } {
1390	array set style {
1391	-color BCGYR
1392	-levels 6
1393	}
1394	set tag $dataobj-$cname
1395	array set style [lindex [$dataobj components -style $cname] 0]
1396	set tf "$style(-color):$style(-levels)"
1397	set _dataset2style($tag) $tf
1398	lappend _style2datasets($tf) $tag
1399	return $tf
1400	}
1401
1402	#
1403	# ComputeTransferFunction --
1404	#
1405	# Computes and sends the transfer function to the render server. It's
1406	# assumed that the volume data limits are known and that the global
1407	# transfer-functions slider values have been set up. Both parts are
1408	# needed to compute the relative value (location) of the marker, and
1409	# the alpha map of the transfer function.
1410	#
1411	itcl::body Rappture::NanovisViewer::ComputeTransferFunction { tf } {
1412	array set style {
1413	-color BCGYR
1414	-levels 6
1415	}
1416
1417	foreach {dataobj cname} [split [lindex $_style2datasets($tf) 0] -] break
1418	array set style [lindex [$dataobj components -style $cname] 0]
1419
1420	# We have to parse the style attributes for a volume using this
1421	# transfer-function once. This sets up the initial isomarkers for the
1422	# transfer function. The user may add/delete markers, so we have to
1423	# maintain a list of markers for each transfer-function. We use the one
1424	# of the volumes (the first in the list) using the transfer-function as a
1425	# reference.
1426	#
1427	# FIXME: The current way we generate transfer-function names completely
1428	# ignores the -markers option. The problem is that we are forced
1429	# to compute the name from an increasing complex set of values:
1430	# color, levels, markers.
1431	if { ![info exists _isomarkers($tf)] } {
1432	# Have to defer creation of isomarkers until we have data limits
1433	if { [info exists style(-markers)] &&
1434	[llength $style(-markers)] > 0 } {
1435	ParseMarkersOption $tf $style(-markers)
1436	} else {
1437	ParseLevelsOption $tf $style(-levels)
1438	}
1439	}
1440	set cmap [ColorsToColormap $style(-color)]
1441
1442	# Transfer function should be normalized with [0,1] range
1443	# The volume shading opacity setting is used to scale opacity
1444	# in the volume shader.
1445	set max 1.0
1446
1447	set isovalues {}
1448	foreach m $_isomarkers($tf) {
1449	lappend isovalues [$m relval]
1450	}
1451	# Sort the isovalues
1452	set isovalues [lsort -real $isovalues]
1453
1454	if { ![info exists _settings($tf-thickness)]} {
1455	set _settings($tf-thickness) 0.005
1456	}
1457	set delta $_settings($tf-thickness)
1458
1459	set first [lindex $isovalues 0]
1460	set last [lindex $isovalues end]
1461	set amap ""
1462	if { $first == "" \|\| $first != 0.0 } {
1463	lappend amap 0.0 0.0
1464	}
1465	foreach x $isovalues {
1466	set x1 [expr {$x-$delta-0.00001}]
1467	set x2 [expr {$x-$delta}]
1468	set x3 [expr {$x+$delta}]
1469	set x4 [expr {$x+$delta+0.00001}]
1470	if { $x1 < 0.0 } {
1471	set x1 0.0
1472	} elseif { $x1 > 1.0 } {
1473	set x1 1.0
1474	}
1475	if { $x2 < 0.0 } {
1476	set x2 0.0
1477	} elseif { $x2 > 1.0 } {
1478	set x2 1.0
1479	}
1480	if { $x3 < 0.0 } {
1481	set x3 0.0
1482	} elseif { $x3 > 1.0 } {
1483	set x3 1.0
1484	}
1485	if { $x4 < 0.0 } {
1486	set x4 0.0
1487	} elseif { $x4 > 1.0 } {
1488	set x4 1.0
1489	}
1490	# add spikes in the middle
1491	lappend amap $x1 0.0
1492	lappend amap $x2 $max
1493	lappend amap $x3 $max
1494	lappend amap $x4 0.0
1495	}
1496	if { $last == "" \|\| $last != 1.0 } {
1497	lappend amap 1.0 0.0
1498	}
1499	SendCmd "transfunc define $tf { $cmap } { $amap }"
1500	}
1501
1502	# ----------------------------------------------------------------------
1503	# CONFIGURATION OPTION: -plotbackground
1504	# ----------------------------------------------------------------------
1505	itcl::configbody Rappture::NanovisViewer::plotbackground {
1506	if { [isconnected] } {
1507	set color $itk_option(-plotbackground)
1508	set rgb [Color2RGB $color]
1509	SendCmd "screen bgcolor $rgb"
1510	$itk_component(legend) configure -background $color
1511	}
1512	}
1513
1514	# ----------------------------------------------------------------------
1515	# CONFIGURATION OPTION: -plotforeground
1516	# ----------------------------------------------------------------------
1517	itcl::configbody Rappture::NanovisViewer::plotforeground {
1518	if { [isconnected] } {
1519	set color $itk_option(-plotforeground)
1520	set rgb [Color2RGB $color]
1521	SendCmd "volume outline color $rgb"
1522	SendCmd "grid axiscolor $rgb"
1523	SendCmd "grid linecolor $rgb"
1524	$itk_component(legend) itemconfigure text -fill $color
1525	}
1526	}
1527
1528	# ----------------------------------------------------------------------
1529	# CONFIGURATION OPTION: -plotoutline
1530	# ----------------------------------------------------------------------
1531	itcl::configbody Rappture::NanovisViewer::plotoutline {
1532	# Must check if we are connected because this routine is called from the
1533	# class body when the -plotoutline itk_option is defined. At that point
1534	# the NanovisViewer class constructor hasn't been called, so we can't
1535	# start sending commands to visualization server.
1536	if { [isconnected] } {
1537	if {"" == $itk_option(-plotoutline)} {
1538	SendCmd "volume outline state off"
1539	} else {
1540	SendCmd "volume outline state on"
1541	SendCmd "volume outline color [Color2RGB $itk_option(-plotoutline)]"
1542	}
1543	}
1544	}
1545
1546	#
1547	# The -levels option takes a single value that represents the number
1548	# of evenly distributed markers based on the current data range. Each
1549	# marker is a relative value from 0.0 to 1.0.
1550	#
1551	itcl::body Rappture::NanovisViewer::ParseLevelsOption { tf levels } {
1552	set c $itk_component(legend)
1553	regsub -all "," $levels " " levels
1554	if {[string is int $levels]} {
1555	for {set i 1} { $i <= $levels } {incr i} {
1556	set x [expr {double($i)/($levels+1)}]
1557	set m [Rappture::IsoMarker \#auto $c $this $tf]
1558	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1559	$m relval $x
1560	lappend _isomarkers($tf) $m
1561	}
1562	} else {
1563	foreach x $levels {
1564	set m [Rappture::IsoMarker \#auto $c $this $tf]
1565	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1566	$m relval $x
1567	lappend _isomarkers($tf) $m
1568	}
1569	}
1570	}
1571
1572	#
1573	# The -markers option takes a list of zero or more values (the values
1574	# may be separated either by spaces or commas) that have the following
1575	# format:
1576	#
1577	# N% Percent of current total data range. Converted to
1578	# to a relative value between 0.0 and 1.0.
1579	# N Absolute value of marker. If the marker is outside of
1580	# the current range, it will be displayed on the outer
1581	# edge of the legends, but it range it represents will
1582	# not be seen.
1583	#
1584	itcl::body Rappture::NanovisViewer::ParseMarkersOption { tf markers } {
1585	set c $itk_component(legend)
1586	regsub -all "," $markers " " markers
1587	foreach marker $markers {
1588	set n [scan $marker "%g%s" value suffix]
1589	if { $n == 2 && $suffix == "%" } {
1590	# ${n}% : Set relative value.
1591	set value [expr {$value * 0.01}]
1592	set m [Rappture::IsoMarker \#auto $c $this $tf]
1593	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1594	$m relval $value
1595	lappend _isomarkers($tf) $m
1596	} else {
1597	# ${n} : Set absolute value.
1598	set m [Rappture::IsoMarker \#auto $c $this $tf]
1599	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1600	$m absval $value
1601	lappend _isomarkers($tf) $m
1602	}
1603	}
1604	}
1605
1606	itcl::body Rappture::NanovisViewer::updateTransferFunctions {} {
1607	$_dispatcher event -idle !send_transfunc
1608	}
1609
1610	itcl::body Rappture::NanovisViewer::AddIsoMarker { x y } {
1611	if { $_first == "" } {
1612	error "active transfer function isn't set"
1613	}
1614	set tag [lindex [CurrentDatasets] 0]
1615	set tf $_dataset2style($tag)
1616	set c $itk_component(legend)
1617	set m [Rappture::IsoMarker \#auto $c $this $tf]
1618	$itk_component(legend) itemconfigure labels -fill $itk_option(-plotforeground)
1619	set w [winfo width $c]
1620	$m relval [expr {double($x-10)/($w-20)}]
1621	lappend _isomarkers($tf) $m
1622	updateTransferFunctions
1623	return 1
1624	}
1625
1626	itcl::body Rappture::NanovisViewer::removeDuplicateMarker { marker x } {
1627	set tf [$marker transferfunc]
1628	set bool 0
1629	if { [info exists _isomarkers($tf)] } {
1630	set list {}
1631	set marker [namespace tail $marker]
1632	foreach m $_isomarkers($tf) {
1633	set sx [$m screenpos]
1634	if { $m != $marker } {
1635	if { $x >= ($sx-3) && $x <= ($sx+3) } {
1636	$marker relval [$m relval]
1637	itcl::delete object $m
1638	bell
1639	set bool 1
1640	continue
1641	}
1642	}
1643	lappend list $m
1644	}
1645	set _isomarkers($tf) $list
1646	updateTransferFunctions
1647	}
1648	return $bool
1649	}
1650
1651	itcl::body Rappture::NanovisViewer::overMarker { marker x } {
1652	set tf [$marker transferfunc]
1653	if { [info exists _isomarkers($tf)] } {
1654	set marker [namespace tail $marker]
1655	foreach m $_isomarkers($tf) {
1656	set sx [$m screenpos]
1657	if { $m != $marker } {
1658	set bool [expr { $x >= ($sx-3) && $x <= ($sx+3) }]
1659	$m activate $bool
1660	}
1661	}
1662	}
1663	return ""
1664	}
1665
1666	itcl::body Rappture::NanovisViewer::limits { tf } {
1667	set _limits(min) 0.0
1668	set _limits(max) 1.0
1669	if { ![info exists _style2datasets($tf)] } {
1670	return [array get _limits]
1671	}
1672	set min ""; set max ""
1673	foreach tag $_style2datasets($tf) {
1674	if { ![info exists _serverDatasets($tag)] } {
1675	continue
1676	}
1677	if { ![info exists _limits($tag-min)] } {
1678	continue
1679	}
1680	if { $min == "" \|\| $min > $_limits($tag-min) } {
1681	set min $_limits($tag-min)
1682	}
1683	if { $max == "" \|\| $max < $_limits($tag-max) } {
1684	set max $_limits($tag-max)
1685	}
1686	}
1687	if { $min != "" } {
1688	set _limits(min) $min
1689	}
1690	if { $max != "" } {
1691	set _limits(max) $max
1692	}
1693	return [array get _limits]
1694	}
1695
1696	itcl::body Rappture::NanovisViewer::BuildViewTab {} {
1697	set fg [option get $itk_component(hull) font Font]
1698	#set bfg [option get $itk_component(hull) boldFont Font]
1699
1700	set inner [$itk_component(main) insert end \
1701	-title "View Settings" \
1702	-icon [Rappture::icon wrench]]
1703	$inner configure -borderwidth 4
1704
1705	checkbutton $inner.axes \
1706	-text "Axes" \
1707	-variable [itcl::scope _settings(-axesvisible)] \
1708	-command [itcl::code $this AdjustSetting -axesvisible] \
1709	-font "Arial 9"
1710
1711	checkbutton $inner.grid \
1712	-text "Grid" \
1713	-variable [itcl::scope _settings(-gridvisible)] \
1714	-command [itcl::code $this AdjustSetting -gridvisible] \
1715	-font "Arial 9"
1716
1717	checkbutton $inner.outline \
1718	-text "Outline" \
1719	-variable [itcl::scope _settings(-outlinevisible)] \
1720	-command [itcl::code $this AdjustSetting -outlinevisible] \
1721	-font "Arial 9"
1722
1723	checkbutton $inner.legend \
1724	-text "Legend" \
1725	-variable [itcl::scope _settings(-legendvisible)] \
1726	-command [itcl::code $this AdjustSetting -legendvisible] \
1727	-font "Arial 9"
1728
1729	checkbutton $inner.volume \
1730	-text "Volume" \
1731	-variable [itcl::scope _settings(-volume)] \
1732	-command [itcl::code $this AdjustSetting -volume] \
1733	-font "Arial 9"
1734
1735	label $inner.background_l -text "Background" -font "Arial 9"
1736	itk_component add background {
1737	Rappture::Combobox $inner.background -width 10 -editable no
1738	}
1739	$inner.background choices insert end \
1740	"black" "black" \
1741	"white" "white" \
1742	"grey" "grey"
1743
1744	$itk_component(background) value $_settings(-background)
1745	bind $inner.background <<Value>> \
1746	[itcl::code $this AdjustSetting -background]
1747
1748	blt::table $inner \
1749	0,0 $inner.axes -cspan 2 -anchor w \
1750	1,0 $inner.grid -cspan 2 -anchor w \
1751	2,0 $inner.outline -cspan 2 -anchor w \
1752	3,0 $inner.volume -cspan 2 -anchor w \
1753	4,0 $inner.legend -cspan 2 -anchor w \
1754	5,0 $inner.background_l -anchor e -pady 2 \
1755	5,1 $inner.background -fill x
1756
1757	blt::table configure $inner r* -resize none
1758	blt::table configure $inner r6 -resize expand
1759	}
1760
1761	itcl::body Rappture::NanovisViewer::BuildVolumeTab {} {
1762	set inner [$itk_component(main) insert end \
1763	-title "Volume Settings" \
1764	-icon [Rappture::icon volume-on]]
1765	$inner configure -borderwidth 4
1766
1767	set fg [option get $itk_component(hull) font Font]
1768	#set bfg [option get $itk_component(hull) boldFont Font]
1769
1770	checkbutton $inner.vol -text "Show volume" -font $fg \
1771	-variable [itcl::scope _settings(-volume)] \
1772	-command [itcl::code $this AdjustSetting -volume]
1773	label $inner.shading -text "Shading:" -font $fg
1774
1775	checkbutton $inner.isosurface -text "Isosurface shading" -font $fg \
1776	-variable [itcl::scope _settings(-isosurfaceshading)] \
1777	-command [itcl::code $this AdjustSetting -isosurfaceshading]
1778
1779	checkbutton $inner.light2side -text "Two-sided lighting" -font $fg \
1780	-variable [itcl::scope _settings(-light2side)] \
1781	-command [itcl::code $this AdjustSetting -light2side]
1782
1783	label $inner.dim -text "Glow" -font $fg
1784	::scale $inner.light -from 0 -to 100 -orient horizontal \
1785	-variable [itcl::scope _settings(-light)] \
1786	-width 10 \
1787	-showvalue off -command [itcl::code $this AdjustSetting -light]
1788	label $inner.bright -text "Surface" -font $fg
1789
1790	# Opacity
1791	label $inner.clear -text "Clear" -font $fg
1792	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1793	-variable [itcl::scope _settings(-opacity)] \
1794	-width 10 \
1795	-showvalue off -command [itcl::code $this AdjustSetting -opacity]
1796	label $inner.opaque -text "Opaque" -font $fg
1797
1798	# Tooth thickness
1799	label $inner.thin -text "Thin" -font $fg
1800	::scale $inner.thickness -from 0 -to 1000 -orient horizontal \
1801	-variable [itcl::scope _settings(-thickness)] \
1802	-width 10 \
1803	-showvalue off -command [itcl::code $this AdjustSetting -thickness]
1804	label $inner.thick -text "Thick" -font $fg
1805
1806	# Colormap
1807	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1808	itk_component add colormap {
1809	Rappture::Combobox $inner.colormap -width 10 -editable no
1810	}
1811
1812	$inner.colormap choices insert end [GetColormapList -includeNone]
1813	$itk_component(colormap) value "BCGYR"
1814	bind $inner.colormap <<Value>> \
1815	[itcl::code $this AdjustSetting -colormap]
1816
1817	blt::table $inner \
1818	0,0 $inner.vol -cspan 4 -anchor w -pady 2 \
1819	1,0 $inner.shading -cspan 4 -anchor w -pady {10 2} \
1820	2,0 $inner.light2side -cspan 4 -anchor w -pady 2 \
1821	3,0 $inner.dim -anchor e -pady 2 \
1822	3,1 $inner.light -cspan 2 -pady 2 -fill x \
1823	3,3 $inner.bright -anchor w -pady 2 \
1824	4,0 $inner.clear -anchor e -pady 2 \
1825	4,1 $inner.opacity -cspan 2 -pady 2 -fill x \
1826	4,3 $inner.opaque -anchor w -pady 2 \
1827	5,0 $inner.thin -anchor e -pady 2 \
1828	5,1 $inner.thickness -cspan 2 -pady 2 -fill x\
1829	5,3 $inner.thick -anchor w -pady 2
1830
1831	blt::table configure $inner c0 c1 c3 r* -resize none
1832	blt::table configure $inner r6 -resize expand
1833	}
1834
1835	itcl::body Rappture::NanovisViewer::BuildCutplanesTab {} {
1836	set inner [$itk_component(main) insert end \
1837	-title "Cutplane Settings" \
1838	-icon [Rappture::icon cutbutton]]
1839	$inner configure -borderwidth 4
1840
1841	checkbutton $inner.visible \
1842	-text "Show Cutplanes" \
1843	-variable [itcl::scope _settings(-cutplanesvisible)] \
1844	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
1845	-font "Arial 9"
1846
1847	# X-value slicer...
1848	itk_component add xCutButton {
1849	Rappture::PushButton $inner.xbutton \
1850	-onimage [Rappture::icon x-cutplane] \
1851	-offimage [Rappture::icon x-cutplane] \
1852	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
1853	-variable [itcl::scope _settings(-xcutplanevisible)]
1854	}
1855	Rappture::Tooltip::for $itk_component(xCutButton) \
1856	"Toggle the X cut plane on/off"
1857	#$itk_component(xCutButton) select
1858
1859	itk_component add xCutScale {
1860	::scale $inner.xval -from 100 -to 0 \
1861	-width 10 -orient vertical -showvalue off \
1862	-borderwidth 1 -highlightthickness 0 \
1863	-command [itcl::code $this Slice move x] \
1864	-variable [itcl::scope _settings(-xcutplaneposition)]
1865	} {
1866	usual
1867	ignore -borderwidth -highlightthickness
1868	}
1869	# Set the default cutplane value before disabling the scale.
1870	$itk_component(xCutScale) set 50
1871	$itk_component(xCutScale) configure -state disabled
1872	Rappture::Tooltip::for $itk_component(xCutScale) \
1873	"@[itcl::code $this SlicerTip x]"
1874
1875	# Y-value slicer...
1876	itk_component add yCutButton {
1877	Rappture::PushButton $inner.ybutton \
1878	-onimage [Rappture::icon y-cutplane] \
1879	-offimage [Rappture::icon y-cutplane] \
1880	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
1881	-variable [itcl::scope _settings(-ycutplanevisible)]
1882	}
1883	Rappture::Tooltip::for $itk_component(yCutButton) \
1884	"Toggle the Y cut plane on/off"
1885	#$itk_component(yCutButton) select
1886
1887	itk_component add yCutScale {
1888	::scale $inner.yval -from 100 -to 0 \
1889	-width 10 -orient vertical -showvalue off \
1890	-borderwidth 1 -highlightthickness 0 \
1891	-command [itcl::code $this Slice move y] \
1892	-variable [itcl::scope _settings(-ycutplaneposition)]
1893	} {
1894	usual
1895	ignore -borderwidth -highlightthickness
1896	}
1897	Rappture::Tooltip::for $itk_component(yCutScale) \
1898	"@[itcl::code $this SlicerTip y]"
1899	# Set the default cutplane value before disabling the scale.
1900	$itk_component(yCutScale) set 50
1901	$itk_component(yCutScale) configure -state disabled
1902
1903	# Z-value slicer...
1904	itk_component add zCutButton {
1905	Rappture::PushButton $inner.zbutton \
1906	-onimage [Rappture::icon z-cutplane] \
1907	-offimage [Rappture::icon z-cutplane] \
1908	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
1909	-variable [itcl::scope _settings(-zcutplanevisible)]
1910	}
1911	Rappture::Tooltip::for $itk_component(zCutButton) \
1912	"Toggle the Z cut plane on/off"
1913	#$itk_component(zCutButton) select
1914
1915	itk_component add zCutScale {
1916	::scale $inner.zval -from 100 -to 0 \
1917	-width 10 -orient vertical -showvalue off \
1918	-borderwidth 1 -highlightthickness 0 \
1919	-command [itcl::code $this Slice move z] \
1920	-variable [itcl::scope _settings(-zcutplaneposition)]
1921	} {
1922	usual
1923	ignore -borderwidth -highlightthickness
1924	}
1925	$itk_component(zCutScale) set 50
1926	$itk_component(zCutScale) configure -state disabled
1927	Rappture::Tooltip::for $itk_component(zCutScale) \
1928	"@[itcl::code $this SlicerTip z]"
1929
1930	blt::table $inner \
1931	0,1 $itk_component(xCutScale) \
1932	0,2 $itk_component(yCutScale) \
1933	0,3 $itk_component(zCutScale) \
1934	1,1 $itk_component(xCutButton) \
1935	1,2 $itk_component(yCutButton) \
1936	1,3 $itk_component(zCutButton)
1937
1938	# 0,1 $inner.visible -anchor w -pady 2 -cspan 4 \
1939
1940	blt::table configure $inner r0 r1 r2 c* -resize none
1941	blt::table configure $inner r3 c4 -resize expand
1942	blt::table configure $inner c0 -width 2
1943	blt::table configure $inner c1 c2 c3 -padx 2
1944	}
1945
1946	itcl::body Rappture::NanovisViewer::BuildCameraTab {} {
1947	set inner [$itk_component(main) insert end \
1948	-title "Camera Settings" \
1949	-icon [Rappture::icon camera]]
1950	$inner configure -borderwidth 4
1951
1952	label $inner.view_l -text "view" -font "Arial 9"
1953	set f [frame $inner.view]
1954	foreach side { front back left right top bottom } {
1955	button $f.$side -image [Rappture::icon view$side] \
1956	-command [itcl::code $this SetOrientation $side]
1957	Rappture::Tooltip::for $f.$side "Change the view to $side"
1958	pack $f.$side -side left
1959	}
1960
1961	blt::table $inner \
1962	0,0 $inner.view_l -anchor e -pady 2 \
1963	0,1 $inner.view -anchor w -pady 2
1964	blt::table configure $inner r0 -resize none
1965
1966	set row 1
1967	set labels { qw qx qy qz xpan ypan zoom }
1968	foreach tag $labels {
1969	label $inner.${tag}label -text $tag -font "Arial 9"
1970	entry $inner.${tag} -font "Arial 9" -bg white \
1971	-textvariable [itcl::scope _settings(-$tag)]
1972	bind $inner.${tag} <Return> \
1973	[itcl::code $this camera set -${tag}]
1974	bind $inner.${tag} <KP_Enter> \
1975	[itcl::code $this camera set -${tag}]
1976	blt::table $inner \
1977	$row,0 $inner.${tag}label -anchor e -pady 2 \
1978	$row,1 $inner.${tag} -anchor w -pady 2
1979	blt::table configure $inner r$row -resize none
1980	incr row
1981	}
1982
1983	blt::table configure $inner c* -resize none
1984	blt::table configure $inner c2 -resize expand
1985	blt::table configure $inner r$row -resize expand
1986	}
1987
1988	# ----------------------------------------------------------------------
1989	# USAGE: Slice move x\|y\|z <newval>
1990	#
1991	# Called automatically when the user drags the slider to move the
1992	# cut plane that slices 3D data. Gets the current value from the
1993	# slider and moves the cut plane to the appropriate point in the
1994	# data set.
1995	# ----------------------------------------------------------------------
1996	itcl::body Rappture::NanovisViewer::Slice {option args} {
1997	switch -- $option {
1998	move {
1999	if {[llength $args] != 2} {
2000	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2001	}
2002	set axis [lindex $args 0]
2003	set newval [lindex $args 1]
2004
2005	set newpos [expr {0.01*$newval}]
2006	set datasets [CurrentDatasets -cutplanes]
2007	set tag [lindex $datasets 0]
2008	SendCmd "cutplane position $newpos $axis $tag"
2009	}
2010	default {
2011	error "bad option \"$option\": should be axis, move, or volume"
2012	}
2013	}
2014	}
2015
2016	# ----------------------------------------------------------------------
2017	# USAGE: SlicerTip <axis>
2018	#
2019	# Used internally to generate a tooltip for the x/y/z slicer controls.
2020	# Returns a message that includes the current slicer value.
2021	# ----------------------------------------------------------------------
2022	itcl::body Rappture::NanovisViewer::SlicerTip {axis} {
2023	set val [$itk_component(${axis}CutScale) get]
2024	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2025	}
2026
2027	itcl::body Rappture::NanovisViewer::DoResize {} {
2028	$_arcball resize $_width $_height
2029	SendCmd "screen size $_width $_height"
2030	set _resizePending 0
2031	}
2032
2033	itcl::body Rappture::NanovisViewer::EventuallyResize { w h } {
2034	set _width $w
2035	set _height $h
2036	$_arcball resize $w $h
2037	if { !$_resizePending } {
2038	$_dispatcher event -idle !resize
2039	set _resizePending 1
2040	}
2041	}
2042
2043	itcl::body Rappture::NanovisViewer::EventuallyRedrawLegend {} {
2044	if { !$_resizeLegendPending } {
2045	$_dispatcher event -idle !legend
2046	set _resizeLegendPending 1
2047	}
2048	}
2049
2050	# camera --
2051	#
2052	itcl::body Rappture::NanovisViewer::camera {option args} {
2053	switch -- $option {
2054	"show" {
2055	puts [array get _view]
2056	}
2057	"set" {
2058	set what [lindex $args 0]
2059	set x $_settings($what)
2060	set code [catch { string is double $x } result]
2061	if { $code != 0 \|\| !$result } {
2062	set _settings($what) $_view($what)
2063	return
2064	}
2065	switch -- $what {
2066	"-xpan" - "-ypan" {
2067	set _view($what) $_settings($what)
2068	PanCamera
2069	}
2070	"-qx" - "-qy" - "-qz" - "-qw" {
2071	set _view($what) $_settings($what)
2072	set q [ViewToQuaternion]
2073	$_arcball quaternion $q
2074	SendCmd "camera orient $q"
2075	}
2076	"-zoom" {
2077	set _view($what) $_settings($what)
2078	SendCmd "camera zoom $_view($what)"
2079	}
2080	}
2081	}
2082	}
2083	}
2084
2085	itcl::body Rappture::NanovisViewer::GetVtkData { args } {
2086	# FIXME: We can only put one component of one dataset in a single
2087	# VTK file. To download all components/results, we would need
2088	# to put them in an archive (e.g. zip or tar file)
2089	if { $_first != ""} {
2090	set cname [lindex [$_first components] 0]
2091	set bytes [$_first vtkdata $cname]
2092	return [list .vtk $bytes]
2093	}
2094	puts stderr "Failed to get vtkdata"
2095	return ""
2096	}
2097
2098	itcl::body Rappture::NanovisViewer::GetImage { args } {
2099	if { [image width $_image(download)] > 0 &&
2100	[image height $_image(download)] > 0 } {
2101	set bytes [$_image(download) data -format "jpeg -quality 100"]
2102	set bytes [Rappture::encoding::decode -as b64 $bytes]
2103	return [list .jpg $bytes]
2104	}
2105	return ""
2106	}
2107
2108	itcl::body Rappture::NanovisViewer::BuildDownloadPopup { popup command } {
2109	Rappture::Balloon $popup \
2110	-title "[Rappture::filexfer::label downloadWord] as..."
2111	set inner [$popup component inner]
2112	label $inner.summary -text "" -anchor w
2113
2114	radiobutton $inner.vtk_button -text "VTK data file" \
2115	-variable [itcl::scope _downloadPopup(format)] \
2116	-font "Arial 9" \
2117	-value vtk
2118	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2119
2120	radiobutton $inner.image_button -text "Image File" \
2121	-variable [itcl::scope _downloadPopup(format)] \
2122	-font "Arial 9 " \
2123	-value image
2124	Rappture::Tooltip::for $inner.image_button \
2125	"Save as digital image."
2126
2127	button $inner.ok -text "Save" \
2128	-highlightthickness 0 -pady 2 -padx 3 \
2129	-command $command \
2130	-compound left \
2131	-image [Rappture::icon download]
2132
2133	button $inner.cancel -text "Cancel" \
2134	-highlightthickness 0 -pady 2 -padx 3 \
2135	-command [list $popup deactivate] \
2136	-compound left \
2137	-image [Rappture::icon cancel]
2138
2139	blt::table $inner \
2140	0,0 $inner.summary -cspan 2 \
2141	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2142	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2143	4,1 $inner.cancel -width .9i -fill y \
2144	4,0 $inner.ok -padx 2 -width .9i -fill y
2145	blt::table configure $inner r3 -height 4
2146	blt::table configure $inner r4 -pady 4
2147	raise $inner.image_button
2148	$inner.vtk_button invoke
2149	return $inner
2150	}
2151
2152	itcl::body Rappture::NanovisViewer::SetOrientation { side } {
2153	array set positions {
2154	front "1 0 0 0"
2155	back "0 0 1 0"
2156	left "0.707107 0 -0.707107 0"
2157	right "0.707107 0 0.707107 0"
2158	top "0.707107 -0.707107 0 0"
2159	bottom "0.707107 0.707107 0 0"
2160	}
2161	foreach name { -qw -qx -qy -qz } value $positions($side) {
2162	set _view($name) $value
2163	}
2164	set q [ViewToQuaternion]
2165	$_arcball quaternion $q
2166	SendCmd "camera orient $q"
2167	SendCmd "camera reset"
2168	set _view(-xpan) 0
2169	set _view(-ypan) 0
2170	set _view(-zoom) 1.0
2171	set _settings(-xpan) $_view(-xpan)
2172	set _settings(-ypan) $_view(-ypan)
2173	set _settings(-zoom) $_view(-zoom)
2174	}

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

Download in other formats: