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source: trunk/gui/scripts/vtkvolumeviewer.tcl @ 3395

Last change on this file since 3395 was 3395, checked in by ldelgass, 11 years ago
standardize default colormap
File size: 84.8 KB

Rev	Line
[3330]	1	# -- mode: tcl; indent-tabs-mode: nil --
[2718]	2
	3	# ----------------------------------------------------------------------
	4	# COMPONENT: VtkVolumeViewer - Vtk volume viewer
	5	#
	6	# It connects to the Vtk server running on a rendering farm,
	7	# transmits data, and displays the results.
	8	# ======================================================================
	9	# AUTHOR: Michael McLennan, Purdue University
[3177]	10	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
[2718]	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 *VtkVolumeViewer.width 4i widgetDefault
	20	option add VtkVolumeViewercursor crosshair widgetDefault
	21	option add *VtkVolumeViewer.height 4i widgetDefault
	22	option add *VtkVolumeViewer.foreground black widgetDefault
	23	option add *VtkVolumeViewer.controlBackground gray widgetDefault
	24	option add *VtkVolumeViewer.controlDarkBackground #999999 widgetDefault
	25	option add *VtkVolumeViewer.plotBackground black widgetDefault
	26	option add *VtkVolumeViewer.plotForeground white widgetDefault
	27	option add *VtkVolumeViewer.font \
	28	--helvetica-medium-r-normal--12-* widgetDefault
	29
	30	# must use this name -- plugs into Rappture::resources::load
	31	proc VtkVolumeViewer_init_resources {} {
	32	Rappture::resources::register \
	33	vtkvis_server Rappture::VtkVolumeViewer::SetServerList
	34	}
	35
	36	itcl::class Rappture::VtkVolumeViewer {
	37	inherit Rappture::VisViewer
	38
	39	itk_option define -plotforeground plotForeground Foreground ""
	40	itk_option define -plotbackground plotBackground Background ""
	41
	42	constructor { hostlist args } {
	43	Rappture::VisViewer::constructor $hostlist
	44	} {
	45	# defined below
	46	}
	47	destructor {
	48	# defined below
	49	}
	50	public proc SetServerList { namelist } {
	51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
	52	}
	53	public method add {dataobj {settings ""}}
	54	public method camera {option args}
	55	public method delete {args}
	56	public method disconnect {}
	57	public method download {option args}
	58	public method get {args}
	59	public method isconnected {}
	60	public method limits { colormap }
	61	public method sendto { string }
	62	public method parameters {title args} {
	63	# do nothing
	64	}
	65	public method scale {args}
	66
	67	protected method Connect {}
	68	protected method CurrentDatasets {args}
	69	protected method Disconnect {}
	70	protected method DoResize {}
	71	protected method DoReseed {}
	72	protected method DoRotate {}
	73	protected method AdjustSetting {what {value ""}}
	74	protected method InitSettings { args }
	75	protected method Pan {option x y}
	76	protected method Pick {x y}
	77	protected method Rebuild {}
	78	protected method ReceiveDataset { args }
	79	protected method ReceiveImage { args }
	80	protected method ReceiveLegend { colormap title vmin vmax size }
	81	protected method Rotate {option x y}
	82	protected method SendCmd {string}
	83	protected method SendCmdNoWait {string}
	84	protected method Zoom {option}
	85
	86	# The following methods are only used by this class.
	87	private method BuildAxisTab {}
	88	private method BuildCameraTab {}
	89	private method BuildColormap { name colors }
	90	private method BuildCutplaneTab {}
	91	private method BuildDownloadPopup { widget command }
	92	private method BuildVolumeTab {}
	93	private method ConvertToVtkData { dataobj comp }
	94	private method DrawLegend { title }
	95	private method Combo { option }
	96	private method EnterLegend { x y }
	97	private method EventuallyResize { w h }
	98	private method EventuallyReseed { numPoints }
	99	private method EventuallyRotate { q }
	100	private method EventuallySetCutplane { axis args }
	101	private method GetImage { args }
	102	private method GetVtkData { args }
	103	private method IsValidObject { dataobj }
	104	private method LeaveLegend {}
	105	private method MotionLegend { x y }
	106	private method PanCamera {}
	107	private method RequestLegend {}
	108	private method SetColormap { dataobj comp }
	109	private method ChangeColormap { dataobj comp color }
	110	private method SetLegendTip { x y }
	111	private method SetObjectStyle { dataobj comp }
	112	private method Slice {option args}
	113
	114	private variable _arcball ""
[2744]	115	private variable _outbuf ; # buffer for outgoing commands
[2718]	116
[2744]	117	private variable _dlist "" ; # list of data objects
[2718]	118	private variable _obj2datasets
[2744]	119	private variable _obj2ovride ; # maps dataobj => style override
	120	private variable _datasets ; # contains all the dataobj-component
	121	; # datasets in the server
	122	private variable _colormaps ; # contains all the colormaps
	123	; # in the server.
[2718]	124	private variable _dataset2style ;# maps dataobj-component to transfunc
	125
[2744]	126	private variable _click ; # info used for rotate operations
	127	private variable _limits ; # autoscale min/max for all axes
	128	private variable _view ; # view params for 3D view
[2718]	129	private variable _settings
[2744]	130	private variable _style; # Array of current component styles.
	131	private variable _initialStyle; # Array of initial component styles.
	132	private variable _reset 1; # indicates if camera needs to be reset
	133	# to starting position.
[2718]	134
[2744]	135	private variable _first "" ; # This is the topmost dataset.
[2718]	136	private variable _start 0
	137	private variable _buffering 0
	138	private variable _title ""
	139	private variable _seeds
	140
[2744]	141	common _downloadPopup; # download options from popup
[2718]	142	private common _hardcopy
	143	private variable _width 0
	144	private variable _height 0
	145	private variable _resizePending 0
	146	private variable _reseedPending 0
	147	private variable _rotatePending 0
	148	private variable _cutplanePending 0
	149	private variable _legendPending 0
	150	private variable _outline
	151	private variable _vectorFields
	152	private variable _scalarFields
	153	private variable _fields
	154	private variable _currentField ""
[2744]	155	private variable _field ""
[2718]	156	private variable _numSeeds 200
	157	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
	158	}
	159
	160	itk::usual VtkVolumeViewer {
	161	keep -background -foreground -cursor -font
	162	keep -plotbackground -plotforeground
	163	}
	164
	165	# ----------------------------------------------------------------------
	166	# CONSTRUCTOR
	167	# ----------------------------------------------------------------------
	168	itcl::body Rappture::VtkVolumeViewer::constructor {hostlist args} {
[2792]	169	package require vtk
[2718]	170	set _serverType "vtkvis"
	171
	172	# Rebuild event
	173	$_dispatcher register !rebuild
	174	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
	175
	176	# Resize event
	177	$_dispatcher register !resize
	178	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
	179
	180	# Reseed event
	181	$_dispatcher register !reseed
	182	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
	183
	184	# Rotate event
	185	$_dispatcher register !rotate
	186	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
	187
	188	# Legend event
	189	$_dispatcher register !legend
	190	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
	191
	192	# X-Cutplane event
	193	$_dispatcher register !xcutplane
	194	$_dispatcher dispatch $this !xcutplane \
[2744]	195	"[itcl::code $this AdjustSetting cutplane-xposition]; list"
[2718]	196
	197	# Y-Cutplane event
	198	$_dispatcher register !ycutplane
	199	$_dispatcher dispatch $this !ycutplane \
[2744]	200	"[itcl::code $this AdjustSetting cutplane-yposition]; list"
[2718]	201
	202	# Z-Cutplane event
	203	$_dispatcher register !zcutplane
	204	$_dispatcher dispatch $this !zcutplane \
[2744]	205	"[itcl::code $this AdjustSetting cutplane-zposition]; list"
[2718]	206
	207	#
	208	# Populate parser with commands handle incoming requests
	209	#
	210	$_parser alias image [itcl::code $this ReceiveImage]
	211	$_parser alias dataset [itcl::code $this ReceiveDataset]
	212	$_parser alias legend [itcl::code $this ReceiveLegend]
[3330]	213	$_parser alias viserror [itcl::code $this ReceiveError]
[2718]	214
	215	array set _outline {
[2744]	216	id -1
	217	afterId -1
	218	x1 -1
	219	y1 -1
	220	x2 -1
	221	y2 -1
[2718]	222	}
	223	# Initialize the view to some default parameters.
	224	array set _view {
[3123]	225	qw 0.853553
	226	qx -0.353553
	227	qy 0.353553
	228	qz 0.146447
[2744]	229	zoom 1.0
	230	xpan 0
	231	ypan 0
	232	ortho 0
[2718]	233	}
	234	set _arcball [blt::arcball create 100 100]
	235	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	236	$_arcball quaternion $q
	237
	238	set _limits(zmin) 0.0
	239	set _limits(zmax) 1.0
	240
	241	array set _settings [subst {
[2744]	242	axis-xgrid 0
	243	axis-ygrid 0
	244	axis-zgrid 0
	245	axis-xcutplane 0
	246	axis-ycutplane 0
	247	axis-zcutplane 0
	248	axis-xposition 0
	249	axis-yposition 0
	250	axis-zposition 0
	251	axis-visible 1
	252	axis-labels 1
	253	cutplane-edges 0
	254	cutplane-xvisible 0
	255	cutplane-yvisible 0
	256	cutplane-zvisible 0
	257	cutplane-xposition 50
	258	cutplane-yposition 50
	259	cutplane-zposition 50
	260	cutplane-visible 1
[2756]	261	cutplane-lighting 1
[2744]	262	cutplane-wireframe 0
	263	cutplane-opacity 100
	264	volume-lighting 1
[2758]	265	volume-material 80
[2744]	266	volume-opacity 40
[2758]	267	volume-quality 50
[2744]	268	volume-visible 1
	269	legend-visible 1
[2718]	270	}]
	271
	272	itk_component add view {
	273	canvas $itk_component(plotarea).view \
	274	-highlightthickness 0 -borderwidth 0
	275	} {
	276	usual
	277	ignore -highlightthickness -borderwidth -background
	278	}
	279
	280	itk_component add fieldmenu {
	281	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
[2744]	282	-tearoff no
[2718]	283	} {
[2744]	284	usual
	285	ignore -background -foreground -relief -tearoff
[2718]	286	}
	287	set c $itk_component(view)
	288	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
	289	bind $c <4> [itcl::code $this Zoom in 0.25]
	290	bind $c <5> [itcl::code $this Zoom out 0.25]
	291	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
	292	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
	293	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
	294	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
	295	bind $c <Enter> "focus %W"
[3330]	296	bind $c <Control-F1> [itcl::code $this ToggleConsole]
[2718]	297
	298	# Fixes the scrollregion in case we go off screen
	299	$c configure -scrollregion [$c bbox all]
	300
	301	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
	302	set _map(cwidth) -1
	303	set _map(cheight) -1
	304	set _map(zoom) 1.0
	305	set _map(original) ""
	306
	307	set f [$itk_component(main) component controls]
	308	itk_component add reset {
	309	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
	310	-highlightthickness 0 \
	311	-image [Rappture::icon reset-view] \
	312	-command [itcl::code $this Zoom reset]
	313	} {
	314	usual
	315	ignore -highlightthickness
	316	}
	317	pack $itk_component(reset) -side top -padx 2 -pady 2
	318	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
	319
	320	itk_component add zoomin {
	321	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
	322	-highlightthickness 0 \
	323	-image [Rappture::icon zoom-in] \
	324	-command [itcl::code $this Zoom in]
	325	} {
	326	usual
	327	ignore -highlightthickness
	328	}
	329	pack $itk_component(zoomin) -side top -padx 2 -pady 2
	330	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
	331
	332	itk_component add zoomout {
	333	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
	334	-highlightthickness 0 \
	335	-image [Rappture::icon zoom-out] \
	336	-command [itcl::code $this Zoom out]
	337	} {
	338	usual
	339	ignore -highlightthickness
	340	}
	341	pack $itk_component(zoomout) -side top -padx 2 -pady 2
	342	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
	343
	344	itk_component add volume {
	345	Rappture::PushButton $f.volume \
	346	-onimage [Rappture::icon volume-on] \
	347	-offimage [Rappture::icon volume-off] \
[2744]	348	-variable [itcl::scope _settings(volume-visible)] \
	349	-command [itcl::code $this AdjustSetting volume-visible]
[2718]	350	}
	351	$itk_component(volume) select
	352	Rappture::Tooltip::for $itk_component(volume) \
	353	"Don't display the volume"
	354	pack $itk_component(volume) -padx 2 -pady 2
	355
	356	itk_component add cutplane {
	357	Rappture::PushButton $f.cutplane \
	358	-onimage [Rappture::icon cutbutton] \
	359	-offimage [Rappture::icon cutbutton] \
[2744]	360	-variable [itcl::scope _settings(cutplane-visible)] \
	361	-command [itcl::code $this AdjustSetting cutplane-visible]
[2718]	362	}
	363	$itk_component(cutplane) select
	364	Rappture::Tooltip::for $itk_component(cutplane) \
	365	"Show/Hide cutplanes"
	366	pack $itk_component(cutplane) -padx 2 -pady 2
	367
	368
	369	if { [catch {
[2744]	370	BuildVolumeTab
	371	BuildCutplaneTab
	372	BuildAxisTab
	373	BuildCameraTab
[2718]	374	} errs] != 0 } {
[2744]	375	puts stderr errs=$errs
[2718]	376	}
	377	# Legend
	378
	379	set _image(legend) [image create photo]
	380	itk_component add legend {
	381	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
	382	} {
	383	usual
	384	ignore -highlightthickness
	385	rename -background -plotbackground plotBackground Background
	386	}
	387
	388	# Hack around the Tk panewindow. The problem is that the requested
	389	# size of the 3d view isn't set until an image is retrieved from
	390	# the server. So the panewindow uses the tiny size.
	391	set w 10000
	392	pack forget $itk_component(view)
	393	blt::table $itk_component(plotarea) \
	394	0,0 $itk_component(view) -fill both -reqwidth $w
	395	blt::table configure $itk_component(plotarea) c1 -resize none
	396
	397	# Bindings for rotation via mouse
	398	bind $itk_component(view) <ButtonPress-1> \
	399	[itcl::code $this Rotate click %x %y]
	400	bind $itk_component(view) <B1-Motion> \
	401	[itcl::code $this Rotate drag %x %y]
	402	bind $itk_component(view) <ButtonRelease-1> \
	403	[itcl::code $this Rotate release %x %y]
	404	bind $itk_component(view) <Configure> \
	405	[itcl::code $this EventuallyResize %w %h]
	406
	407	if 0 {
	408	bind $itk_component(view) <Configure> \
	409	[itcl::code $this EventuallyResize %w %h]
	410	}
	411	# Bindings for panning via mouse
	412	bind $itk_component(view) <ButtonPress-2> \
	413	[itcl::code $this Pan click %x %y]
	414	bind $itk_component(view) <B2-Motion> \
	415	[itcl::code $this Pan drag %x %y]
	416	bind $itk_component(view) <ButtonRelease-2> \
	417	[itcl::code $this Pan release %x %y]
	418
	419	bind $itk_component(view) <ButtonRelease-3> \
	420	[itcl::code $this Pick %x %y]
	421
	422	# Bindings for panning via keyboard
	423	bind $itk_component(view) <KeyPress-Left> \
	424	[itcl::code $this Pan set -10 0]
	425	bind $itk_component(view) <KeyPress-Right> \
	426	[itcl::code $this Pan set 10 0]
	427	bind $itk_component(view) <KeyPress-Up> \
	428	[itcl::code $this Pan set 0 -10]
	429	bind $itk_component(view) <KeyPress-Down> \
	430	[itcl::code $this Pan set 0 10]
	431	bind $itk_component(view) <Shift-KeyPress-Left> \
	432	[itcl::code $this Pan set -2 0]
	433	bind $itk_component(view) <Shift-KeyPress-Right> \
	434	[itcl::code $this Pan set 2 0]
	435	bind $itk_component(view) <Shift-KeyPress-Up> \
	436	[itcl::code $this Pan set 0 -2]
	437	bind $itk_component(view) <Shift-KeyPress-Down> \
	438	[itcl::code $this Pan set 0 2]
	439
	440	# Bindings for zoom via keyboard
	441	bind $itk_component(view) <KeyPress-Prior> \
	442	[itcl::code $this Zoom out]
	443	bind $itk_component(view) <KeyPress-Next> \
	444	[itcl::code $this Zoom in]
	445
	446	bind $itk_component(view) <Enter> "focus $itk_component(view)"
	447
	448	if {[string equal "x11" [tk windowingsystem]]} {
	449	# Bindings for zoom via mouse
	450	bind $itk_component(view) <4> [itcl::code $this Zoom out]
	451	bind $itk_component(view) <5> [itcl::code $this Zoom in]
	452	}
	453
	454	set _image(download) [image create photo]
	455
	456	eval itk_initialize $args
	457	Connect
	458	update
	459	}
	460
	461	# ----------------------------------------------------------------------
	462	# DESTRUCTOR
	463	# ----------------------------------------------------------------------
	464	itcl::body Rappture::VtkVolumeViewer::destructor {} {
	465	Disconnect
	466	image delete $_image(plot)
	467	image delete $_image(download)
	468	catch { blt::arcball destroy $_arcball }
	469	}
	470
	471	itcl::body Rappture::VtkVolumeViewer::DoResize {} {
	472	if { $_width < 2 } {
[2744]	473	set _width 500
[2718]	474	}
	475	if { $_height < 2 } {
[2744]	476	set _height 500
[2718]	477	}
	478	set _start [clock clicks -milliseconds]
	479	SendCmd "screen size $_width $_height"
	480	set _legendPending 1
	481
	482	#SendCmd "imgflush"
	483
	484	# Must reset camera to have object scaling to take effect.
	485	#SendCmd "camera reset"
	486	#SendCmd "camera zoom $_view(zoom)"
	487	set _resizePending 0
	488	}
	489
	490	itcl::body Rappture::VtkVolumeViewer::DoRotate {} {
	491	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	492	SendCmd "camera orient $q"
	493	set _rotatePending 0
	494	}
	495
	496	itcl::body Rappture::VtkVolumeViewer::EventuallyResize { w h } {
	497	set _width $w
	498	set _height $h
	499	$_arcball resize $w $h
	500	if { !$_resizePending } {
	501	set _resizePending 1
	502	$_dispatcher event -after 400 !resize
	503	}
	504	}
	505
	506	itcl::body Rappture::VtkVolumeViewer::EventuallyReseed { numPoints } {
	507	set _numSeeds $numPoints
	508	if { !$_reseedPending } {
	509	set _reseedPending 1
	510	$_dispatcher event -after 600 !reseed
	511	}
	512	}
	513
	514	set rotate_delay 100
	515
	516	itcl::body Rappture::VtkVolumeViewer::EventuallyRotate { q } {
	517	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
	518	if { !$_rotatePending } {
	519	set _rotatePending 1
[2744]	520	global rotate_delay
[2718]	521	$_dispatcher event -after $rotate_delay !rotate
	522	}
	523	}
	524
	525	itcl::body Rappture::VtkVolumeViewer::EventuallySetCutplane { axis args } {
	526	if { !$_cutplanePending } {
	527	set _cutplanePending 1
	528	$_dispatcher event -after 100 !${axis}cutplane
	529	}
	530	}
	531
	532	# ----------------------------------------------------------------------
	533	# USAGE: add <dataobj> ?<settings>?
	534	#
	535	# Clients use this to add a data object to the plot. The optional
	536	# <settings> are used to configure the plot. Allowed settings are
	537	# -color, -brightness, -width, -linestyle, and -raise.
	538	# ----------------------------------------------------------------------
	539	itcl::body Rappture::VtkVolumeViewer::add {dataobj {settings ""}} {
	540	array set params {
	541	-color auto
	542	-width 1
	543	-linestyle solid
	544	-brightness 0
	545	-raise 0
	546	-description ""
	547	-param ""
[2744]	548	-type ""
[2718]	549	}
	550	array set params $settings
	551	set params(-description) ""
	552	set params(-param) ""
	553	foreach {opt val} $settings {
	554	if {![info exists params($opt)]} {
	555	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
	556	}
	557	set params($opt) $val
	558	}
	559	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
	560	# can't handle -autocolors yet
	561	set params(-color) black
	562	}
	563	set pos [lsearch -exact $dataobj $_dlist]
	564	if {$pos < 0} {
[2744]	565	lappend _dlist $dataobj
[2718]	566	}
	567	set _obj2ovride($dataobj-color) $params(-color)
	568	set _obj2ovride($dataobj-width) $params(-width)
	569	set _obj2ovride($dataobj-raise) $params(-raise)
	570	$_dispatcher event -idle !rebuild
	571	}
	572
	573
	574	# ----------------------------------------------------------------------
	575	# USAGE: delete ?<dataobj1> <dataobj2> ...?
	576	#
	577	# Clients use this to delete a dataobj from the plot. If no dataobjs
	578	# are specified, then all dataobjs are deleted. No data objects are
	579	# deleted. They are only removed from the display list.
	580	#
	581	# ----------------------------------------------------------------------
	582	itcl::body Rappture::VtkVolumeViewer::delete {args} {
	583	if { [llength $args] == 0} {
	584	set args $_dlist
	585	}
	586	# Delete all specified dataobjs
	587	set changed 0
	588	foreach dataobj $args {
	589	set pos [lsearch -exact $_dlist $dataobj]
[2744]	590	if { $pos < 0 } {
	591	continue; # Don't know anything about it.
	592	}
	593	# Remove it from the dataobj list.
	594	set _dlist [lreplace $_dlist $pos $pos]
	595	SendCmd "dataset visible 0"
	596	array unset _obj2ovride $dataobj-*
	597	array unset _settings $dataobj-*
	598	# Append to the end of the dataobj list.
	599	lappend _dlist $dataobj
	600	set changed 1
[2718]	601	}
	602	# If anything changed, then rebuild the plot
	603	if { $changed } {
	604	$_dispatcher event -idle !rebuild
	605	}
	606	}
	607
	608	# ----------------------------------------------------------------------
	609	# USAGE: get ?-objects?
	610	# USAGE: get ?-visible?
	611	# USAGE: get ?-image view?
	612	#
	613	# Clients use this to query the list of objects being plotted, in
	614	# order from bottom to top of this result. The optional "-image"
	615	# flag can also request the internal images being shown.
	616	# ----------------------------------------------------------------------
	617	itcl::body Rappture::VtkVolumeViewer::get {args} {
	618	if {[llength $args] == 0} {
	619	set args "-objects"
	620	}
	621
	622	set op [lindex $args 0]
	623	switch -- $op {
[2744]	624	"-objects" {
	625	# put the dataobj list in order according to -raise options
	626	set dlist {}
	627	foreach dataobj $_dlist {
	628	if { ![IsValidObject $dataobj] } {
	629	continue
	630	}
	631	if {[info exists _obj2ovride($dataobj-raise)] &&
	632	$_obj2ovride($dataobj-raise)} {
	633	set dlist [linsert $dlist 0 $dataobj]
	634	} else {
	635	lappend dlist $dataobj
	636	}
	637	}
	638	return $dlist
	639	}
	640	"-visible" {
	641	set dlist {}
	642	foreach dataobj $_dlist {
	643	if { ![IsValidObject $dataobj] } {
	644	continue
	645	}
	646	if { ![info exists _obj2ovride($dataobj-raise)] } {
	647	# No setting indicates that the object isn't visible.
	648	continue
	649	}
	650	# Otherwise use the -raise parameter to put the object to
	651	# the front of the list.
	652	if { $_obj2ovride($dataobj-raise) } {
	653	set dlist [linsert $dlist 0 $dataobj]
	654	} else {
	655	lappend dlist $dataobj
	656	}
	657	}
	658	return $dlist
	659	}
	660	-image {
	661	if {[llength $args] != 2} {
	662	error "wrong # args: should be \"get -image view\""
	663	}
	664	switch -- [lindex $args end] {
	665	view {
	666	return $_image(plot)
	667	}
	668	default {
	669	error "bad image name \"[lindex $args end]\": should be view"
	670	}
	671	}
	672	}
	673	default {
	674	error "bad option \"$op\": should be -objects or -image"
	675	}
[2718]	676	}
	677	}
	678
	679	# ----------------------------------------------------------------------
	680	# USAGE: scale ?<data1> <data2> ...?
	681	#
	682	# Sets the default limits for the overall plot according to the
	683	# limits of the data for all of the given <data> objects. This
	684	# accounts for all objects--even those not showing on the screen.
	685	# Because of this, the limits are appropriate for all objects as
	686	# the user scans through data in the ResultSet viewer.
	687	# ----------------------------------------------------------------------
	688	itcl::body Rappture::VtkVolumeViewer::scale {args} {
	689	array unset _limits
	690	foreach dataobj $args {
[2744]	691	set string [limits $dataobj]
	692	if { $string == "" } {
	693	continue
	694	}
	695	array set bounds $string
	696	if {![info exists _limits(xmin)] \|\| $_limits(xmin) > $bounds(xmin)} {
	697	set _limits(xmin) $bounds(xmin)
	698	}
	699	if {![info exists _limits(xmax)] \|\| $_limits(xmax) < $bounds(xmax)} {
	700	set _limits(xmax) $bounds(xmax)
	701	}
[2718]	702
[2744]	703	if {![info exists _limits(ymin)] \|\| $_limits(ymin) > $bounds(ymin)} {
	704	set _limits(ymin) $bounds(ymin)
	705	}
	706	if {![info exists _limits(ymax)] \|\| $_limits(ymax) < $bounds(ymax)} {
	707	set _limits(ymax) $bounds(ymax)
	708	}
[2718]	709
[2744]	710	if {![info exists _limits(zmin)] \|\| $_limits(zmin) > $bounds(zmin)} {
	711	set _limits(zmin) $bounds(zmin)
	712	}
	713	if {![info exists _limits(zmax)] \|\| $_limits(zmax) < $bounds(zmax)} {
	714	set _limits(zmax) $bounds(zmax)
	715	}
[2718]	716	}
	717	}
	718
	719	# ----------------------------------------------------------------------
	720	# USAGE: download coming
	721	# USAGE: download controls <downloadCommand>
	722	# USAGE: download now
	723	#
	724	# Clients use this method to create a downloadable representation
	725	# of the plot. Returns a list of the form {ext string}, where
	726	# "ext" is the file extension (indicating the type of data) and
	727	# "string" is the data itself.
	728	# ----------------------------------------------------------------------
	729	itcl::body Rappture::VtkVolumeViewer::download {option args} {
	730	switch $option {
	731	coming {
	732	if {[catch {
	733	blt::winop snap $itk_component(plotarea) $_image(download)
	734	}]} {
	735	$_image(download) configure -width 1 -height 1
	736	$_image(download) put #000000
	737	}
	738	}
	739	controls {
	740	set popup .vtkviewerdownload
	741	if { ![winfo exists .vtkviewerdownload] } {
	742	set inner [BuildDownloadPopup $popup [lindex $args 0]]
	743	} else {
	744	set inner [$popup component inner]
	745	}
	746	set _downloadPopup(image_controls) $inner.image_frame
	747	set num [llength [get]]
	748	set num [expr {($num == 1) ? "1 result" : "$num results"}]
	749	set word [Rappture::filexfer::label downloadWord]
	750	$inner.summary configure -text "$word $num in the following format:"
[2744]	751	update idletasks ;# Fix initial sizes
[2718]	752	return $popup
	753	}
	754	now {
	755	set popup .vtkviewerdownload
	756	if {[winfo exists .vtkviewerdownload]} {
	757	$popup deactivate
	758	}
	759	switch -- $_downloadPopup(format) {
	760	"image" {
	761	return [$this GetImage [lindex $args 0]]
	762	}
	763	"vtk" {
	764	return [$this GetVtkData [lindex $args 0]]
	765	}
	766	}
	767	return ""
	768	}
	769	default {
	770	error "bad option \"$option\": should be coming, controls, now"
	771	}
	772	}
	773	}
	774
	775	# ----------------------------------------------------------------------
	776	# USAGE: Connect ?<host:port>,<host:port>...?
	777	#
	778	# Clients use this method to establish a connection to a new
	779	# server, or to reestablish a connection to the previous server.
	780	# Any existing connection is automatically closed.
	781	# ----------------------------------------------------------------------
	782	itcl::body Rappture::VtkVolumeViewer::Connect {} {
	783	set _hosts [GetServerList "vtkvis"]
	784	if { "" == $_hosts } {
	785	return 0
	786	}
	787	set result [VisViewer::Connect $_hosts]
	788	if { $result } {
	789	set w [winfo width $itk_component(view)]
	790	set h [winfo height $itk_component(view)]
	791	EventuallyResize $w $h
	792	}
	793	return $result
	794	}
	795
	796	#
	797	# isconnected --
	798	#
	799	# Indicates if we are currently connected to the visualization server.
	800	#
	801	itcl::body Rappture::VtkVolumeViewer::isconnected {} {
	802	return [VisViewer::IsConnected]
	803	}
	804
	805	#
	806	# disconnect --
	807	#
	808	itcl::body Rappture::VtkVolumeViewer::disconnect {} {
	809	Disconnect
	810	set _reset 1
	811	}
	812
	813	#
	814	# Disconnect --
	815	#
	816	# Clients use this method to disconnect from the current rendering
	817	# server.
	818	#
	819	itcl::body Rappture::VtkVolumeViewer::Disconnect {} {
	820	VisViewer::Disconnect
	821
	822	$_dispatcher cancel !rebuild
	823	$_dispatcher cancel !resize
	824	$_dispatcher cancel !reseed
	825	$_dispatcher cancel !rotate
	826	$_dispatcher cancel !xcutplane
	827	$_dispatcher cancel !ycutplane
	828	$_dispatcher cancel !zcutplane
	829	$_dispatcher cancel !legend
	830	# disconnected -- no more data sitting on server
	831	set _outbuf ""
	832	array unset _datasets
	833	array unset _data
	834	array unset _colormaps
	835	array unset _seeds
	836	array unset _dataset2style
	837	array unset _obj2datasets
	838	}
	839
	840	#
	841	# sendto --
	842	#
	843	itcl::body Rappture::VtkVolumeViewer::sendto { bytes } {
	844	SendBytes "$bytes\n"
	845	StartWaiting
	846	}
	847
	848	#
	849	# SendCmd
	850	#
	851	# Send commands off to the rendering server. If we're currently
	852	# sending data objects to the server, buffer the commands to be
	853	# sent later.
	854	#
	855	itcl::body Rappture::VtkVolumeViewer::SendCmd {string} {
	856	if { $_buffering } {
	857	append _outbuf $string "\n"
	858	} else {
	859	SendBytes "$string\n"
[2744]	860	StartWaiting
[2718]	861	}
	862	}
	863
	864	#
	865	# SendCmdNoWait
	866	#
	867	# Send commands off to the rendering server. If we're currently
	868	# sending data objects to the server, buffer the commands to be
	869	# sent later.
	870	#
	871	itcl::body Rappture::VtkVolumeViewer::SendCmdNoWait {string} {
	872	if { $_buffering } {
	873	append _outbuf $string "\n"
	874	} else {
	875	SendBytes "$string\n"
	876	}
	877	}
	878
	879	# ----------------------------------------------------------------------
	880	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
	881	#
	882	# Invoked automatically whenever the "image" command comes in from
	883	# the rendering server. Indicates that binary image data with the
	884	# specified <size> will follow.
	885	# ----------------------------------------------------------------------
	886	itcl::body Rappture::VtkVolumeViewer::ReceiveImage { args } {
	887	array set info {
	888	-token "???"
	889	-bytes 0
	890	-type image
	891	}
	892	array set info $args
	893	set bytes [ReceiveBytes $info(-bytes)]
	894	StopWaiting
	895	if { $info(-type) == "image" } {
[2744]	896	if 0 {
	897	set f [open "last.ppm" "w"]
	898	puts $f $bytes
	899	close $f
	900	}
[2718]	901	$_image(plot) configure -data $bytes
[2744]	902	set time [clock seconds]
	903	set date [clock format $time]
[2718]	904	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
[2744]	905	if { $_start > 0 } {
	906	set finish [clock clicks -milliseconds]
	907	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
	908	set _start 0
	909	}
[2718]	910	} elseif { $info(type) == "print" } {
	911	set tag $this-print-$info(-token)
	912	set _hardcopy($tag) $bytes
	913	}
	914	if { $_legendPending } {
[2744]	915	RequestLegend
[2718]	916	}
	917	}
	918
	919	#
	920	# ReceiveDataset --
	921	#
	922	itcl::body Rappture::VtkVolumeViewer::ReceiveDataset { args } {
	923	if { ![isconnected] } {
	924	return
	925	}
	926	set option [lindex $args 0]
	927	switch -- $option {
[2744]	928	"scalar" {
	929	set option [lindex $args 1]
	930	switch -- $option {
	931	"world" {
	932	foreach { x y z value tag } [lrange $args 2 end] break
	933	}
	934	"pixel" {
	935	foreach { x y value tag } [lrange $args 2 end] break
	936	}
	937	}
	938	}
	939	"vector" {
	940	set option [lindex $args 1]
	941	switch -- $option {
	942	"world" {
	943	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
	944	}
	945	"pixel" {
	946	foreach { x y vx vy vz tag } [lrange $args 2 end] break
	947	}
	948	}
	949	}
	950	"names" {
[2718]	951	foreach { name } [lindex $args 1] {
	952	#puts stderr "Dataset: $name"
	953	}
[2744]	954	}
	955	default {
	956	error "unknown dataset option \"$option\" from server"
	957	}
[2718]	958	}
	959	}
	960
	961	# ----------------------------------------------------------------------
	962	# USAGE: Rebuild
	963	#
	964	# Called automatically whenever something changes that affects the
	965	# data in the widget. Clears any existing data and rebuilds the
	966	# widget to display new data.
	967	# ----------------------------------------------------------------------
	968	itcl::body Rappture::VtkVolumeViewer::Rebuild {} {
	969	update
	970	set w [winfo width $itk_component(view)]
	971	set h [winfo height $itk_component(view)]
	972	if { $w < 2 \|\| $h < 2 } {
[2744]	973	$_dispatcher event -idle !rebuild
	974	return
[2718]	975	}
	976
	977	# Turn on buffering of commands to the server. We don't want to
	978	# be preempted by a server disconnect/reconnect (which automatically
	979	# generates a new call to Rebuild).
[3392]	980	set _buffering 1
	981	set _legendPending 1
	982
	983	if { $_reset } {
	984	if 1 {
	985	# Tell the server the name of the tool, the version, and dataset
	986	# that we are rendering. Have to do it here because we don't know
	987	# what data objects are using the renderer until be get here.
	988	global env
	989
	990	set info {}
	991	set user "???"
	992	if { [info exists env(USER)] } {
	993	set user $env(USER)
	994	}
	995	set session "???"
	996	if { [info exists env(SESSION)] } {
	997	set session $env(SESSION)
	998	}
	999	lappend info "hub" [exec hostname]
	1000	lappend info "client" "vtkvolumeviewer"
	1001	lappend info "user" $user
	1002	lappend info "session" $session
	1003	SendCmd "clientinfo [list $info]"
	1004	}
	1005
	1006	set _width $w
	1007	set _height $h
	1008	$_arcball resize $w $h
	1009	DoResize
	1010	#
	1011	# Reset the camera and other view parameters
	1012	#
	1013	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1014	$_arcball quaternion $q
	1015	if {$_view(ortho)} {
	1016	SendCmd "camera mode ortho"
	1017	} else {
	1018	SendCmd "camera mode persp"
	1019	}
	1020	DoRotate
	1021	InitSettings axis-xgrid axis-ygrid axis-zgrid axis-mode \
	1022	axis-visible axis-labels
	1023	PanCamera
[2718]	1024	}
	1025	set _first ""
	1026
	1027	SendCmd "imgflush"
	1028	set _limits(zmin) ""
	1029	set _limits(zmax) ""
	1030	set _first ""
[2727]	1031
[2718]	1032	foreach dataobj [get -objects] {
[2744]	1033	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
	1034	set _first $dataobj
	1035	}
	1036	set _obj2datasets($dataobj) ""
[2718]	1037	foreach comp [$dataobj components] {
	1038	set tag $dataobj-$comp
	1039	if { ![info exists _datasets($tag)] } {
	1040	set bytes [$dataobj vtkdata $comp]
	1041	set length [string length $bytes]
[3392]	1042	if 1 {
	1043	set info {}
	1044	lappend info "tool_id" [$dataobj hints toolId]
	1045	lappend info "tool_name" [$dataobj hints toolName]
	1046	lappend info "tool_version" [$dataobj hints toolRevision]
	1047	lappend info "tool_title" [$dataobj hints toolTitle]
	1048	lappend info "dataset_label" [$dataobj hints label]
	1049	lappend info "dataset_size" $length
[3394]	1050	lappend info "dataset_tag" $tag
[3392]	1051	SendCmd [list "clientinfo" $info]
	1052	}
[2718]	1053	append _outbuf "dataset add $tag data follows $length\n"
	1054	append _outbuf $bytes
	1055	set _datasets($tag) 1
[2744]	1056	SetObjectStyle $dataobj $comp
	1057	}
	1058	lappend _obj2datasets($dataobj) $tag
	1059	if { [info exists _obj2ovride($dataobj-raise)] } {
	1060	SendCmd "dataset visible 1 $tag"
	1061	} else {
	1062	SendCmd "dataset visible 0 $tag"
	1063	}
	1064	break
[2718]	1065	}
	1066	}
	1067	if {"" != $_first} {
	1068	set location [$_first hints camera]
	1069	if { $location != "" } {
	1070	array set view $location
	1071	}
	1072
[2744]	1073	foreach axis { x y z } {
	1074	set label [$_first hints ${axis}label]
	1075	if { $label != "" } {
	1076	SendCmd "axis name $axis $label"
	1077	}
	1078	set units [$_first hints ${axis}units]
	1079	if { $units != "" } {
	1080	SendCmd "axis units $axis $units"
	1081	}
	1082	}
	1083	array unset _scalarFields
	1084	array unset _vectorFields
	1085	set _currentField [$_first hints default]
	1086	$itk_component(field) choices delete 0 end
	1087	$itk_component(fieldmenu) delete 0 end
	1088	array unset _fields
	1089	foreach { name title units } [$_first hints vectors] {
	1090	set _vectorFields($title) $name
	1091	$itk_component(field) choices insert end "$name" "$title"
	1092	$itk_component(fieldmenu) add radiobutton -label "$title" \
	1093	-value $title -variable [itcl::scope _currentField] \
	1094	-selectcolor red \
	1095	-activebackground black \
	1096	-activeforeground white \
	1097	-font "Arial 8" \
	1098	-command [itcl::code $this Combo invoke]
	1099	set _fields($name) [list $title $units]
	1100	}
	1101	foreach { name title units } [$_first hints scalars] {
	1102	set _scalarFields($title) $name
	1103	$itk_component(field) choices insert end "$name" "$title"
	1104	$itk_component(fieldmenu) add radiobutton -label "$title" \
	1105	-value $title -variable [itcl::scope _currentField] \
	1106	-selectcolor red \
	1107	-activebackground black \
	1108	-activeforeground white \
	1109	-font "Arial 8" \
	1110	-command [itcl::code $this Combo invoke]
	1111	set _fields($name) [list $title $units]
	1112	}
	1113	foreach { name title units } { default Default ??? } {
	1114	set _scalarFields($title) $name
	1115	$itk_component(field) choices insert end "$name" "$title"
	1116	$itk_component(fieldmenu) add radiobutton -label "$title" \
	1117	-value $title -variable [itcl::scope _currentField] \
	1118	-selectcolor red \
	1119	-activebackground black \
	1120	-activeforeground white \
	1121	-font "Arial 8" \
	1122	-command [itcl::code $this Combo invoke]
	1123	set _fields($name) [list $title $units]
	1124	}
	1125	$itk_component(field) value $_currentField
[2718]	1126	}
	1127
[2758]	1128	InitSettings volume-palette volume-material volume-quality volume-visible \
	1129	cutplane-visible \
	1130	cutplane-xposition cutplane-yposition cutplane-zposition \
	1131	cutplane-xvisible cutplane-yvisible cutplane-zvisible
[2718]	1132
	1133	if { $_reset } {
[2744]	1134	InitSettings volume-lighting
	1135	Zoom reset
	1136	set _reset 0
[2718]	1137	}
	1138	set _buffering 0; # Turn off buffering.
	1139
	1140	# Actually write the commands to the server socket. If it fails, we don't
	1141	# care. We're finished here.
	1142	blt::busy hold $itk_component(hull)
	1143	sendto $_outbuf;
	1144	blt::busy release $itk_component(hull)
	1145	set _outbuf ""; # Clear the buffer.
	1146	}
	1147
	1148	# ----------------------------------------------------------------------
	1149	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
	1150	#
	1151	# Returns a list of server IDs for the current datasets being displayed. This
	1152	# is normally a single ID, but it might be a list of IDs if the current data
	1153	# object has multiple components.
	1154	# ----------------------------------------------------------------------
	1155	itcl::body Rappture::VtkVolumeViewer::CurrentDatasets {args} {
	1156	set flag [lindex $args 0]
	1157	switch -- $flag {
[2744]	1158	"-all" {
	1159	if { [llength $args] > 1 } {
	1160	error "CurrentDatasets: can't specify dataobj after \"-all\""
	1161	}
	1162	set dlist [get -objects]
	1163	}
	1164	"-visible" {
	1165	if { [llength $args] > 1 } {
	1166	set dlist {}
	1167	set args [lrange $args 1 end]
	1168	foreach dataobj $args {
	1169	if { [info exists _obj2ovride($dataobj-raise)] } {
	1170	lappend dlist $dataobj
	1171	}
	1172	}
	1173	} else {
	1174	set dlist [get -visible]
	1175	}
	1176	}
	1177	default {
	1178	set dlist $args
	1179	}
[2718]	1180	}
	1181	set rlist ""
	1182	foreach dataobj $dlist {
[2744]	1183	foreach comp [$dataobj components] {
	1184	set tag $dataobj-$comp
	1185	if { [info exists _datasets($tag)] && $_datasets($tag) } {
	1186	lappend rlist $tag
	1187	}
	1188	}
[2718]	1189	}
	1190	return $rlist
	1191	}
	1192
	1193	# ----------------------------------------------------------------------
	1194	# USAGE: Zoom in
	1195	# USAGE: Zoom out
	1196	# USAGE: Zoom reset
	1197	#
	1198	# Called automatically when the user clicks on one of the zoom
	1199	# controls for this widget. Changes the zoom for the current view.
	1200	# ----------------------------------------------------------------------
	1201	itcl::body Rappture::VtkVolumeViewer::Zoom {option} {
	1202	switch -- $option {
	1203	"in" {
	1204	set _view(zoom) [expr {$_view(zoom)*1.25}]
[2744]	1205	SendCmd "camera zoom $_view(zoom)"
[2718]	1206	}
	1207	"out" {
	1208	set _view(zoom) [expr {$_view(zoom)*0.8}]
[2744]	1209	SendCmd "camera zoom $_view(zoom)"
[2718]	1210	}
	1211	"reset" {
	1212	array set _view {
[3123]	1213	qw 0.853553
	1214	qx -0.353553
	1215	qy 0.353553
	1216	qz 0.146447
[2718]	1217	zoom 1.0
	1218	xpan 0
	1219	ypan 0
	1220	}
	1221	SendCmd "camera reset all"
	1222	if { $_first != "" } {
	1223	set location [$_first hints camera]
	1224	if { $location != "" } {
	1225	array set _view $location
	1226	}
	1227	}
[2744]	1228	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1229	$_arcball quaternion $q
	1230	DoRotate
[2718]	1231	}
	1232	}
	1233	}
	1234
	1235	itcl::body Rappture::VtkVolumeViewer::PanCamera {} {
	1236	set x $_view(xpan)
	1237	set y $_view(ypan)
	1238	SendCmd "camera pan $x $y"
	1239	}
	1240
	1241
	1242	# ----------------------------------------------------------------------
	1243	# USAGE: Rotate click <x> <y>
	1244	# USAGE: Rotate drag <x> <y>
	1245	# USAGE: Rotate release <x> <y>
	1246	#
	1247	# Called automatically when the user clicks/drags/releases in the
	1248	# plot area. Moves the plot according to the user's actions.
	1249	# ----------------------------------------------------------------------
	1250	itcl::body Rappture::VtkVolumeViewer::Rotate {option x y} {
	1251	switch -- $option {
	1252	"click" {
	1253	$itk_component(view) configure -cursor fleur
	1254	set _click(x) $x
	1255	set _click(y) $y
	1256	}
	1257	"drag" {
	1258	if {[array size _click] == 0} {
	1259	Rotate click $x $y
	1260	} else {
	1261	set w [winfo width $itk_component(view)]
	1262	set h [winfo height $itk_component(view)]
	1263	if {$w <= 0 \|\| $h <= 0} {
	1264	return
	1265	}
	1266
	1267	if {[catch {
	1268	# this fails sometimes for no apparent reason
	1269	set dx [expr {double($x-$_click(x))/$w}]
	1270	set dy [expr {double($y-$_click(y))/$h}]
	1271	}]} {
	1272	return
	1273	}
[2744]	1274	if { $dx == 0 && $dy == 0 } {
	1275	return
	1276	}
	1277	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
	1278	EventuallyRotate $q
[2718]	1279	set _click(x) $x
	1280	set _click(y) $y
	1281	}
	1282	}
	1283	"release" {
	1284	Rotate drag $x $y
	1285	$itk_component(view) configure -cursor ""
	1286	catch {unset _click}
	1287	}
	1288	default {
	1289	error "bad option \"$option\": should be click, drag, release"
	1290	}
	1291	}
	1292	}
	1293
	1294	itcl::body Rappture::VtkVolumeViewer::Pick {x y} {
	1295	foreach tag [CurrentDatasets -visible] {
	1296	SendCmd "dataset getscalar pixel $x $y $tag"
	1297	}
	1298	}
	1299
	1300	# ----------------------------------------------------------------------
	1301	# USAGE: $this Pan click x y
	1302	# $this Pan drag x y
	1303	# $this Pan release x y
	1304	#
	1305	# Called automatically when the user clicks on one of the zoom
	1306	# controls for this widget. Changes the zoom for the current view.
	1307	# ----------------------------------------------------------------------
	1308	itcl::body Rappture::VtkVolumeViewer::Pan {option x y} {
	1309	switch -- $option {
[2744]	1310	"set" {
	1311	set w [winfo width $itk_component(view)]
	1312	set h [winfo height $itk_component(view)]
	1313	set x [expr $x / double($w)]
	1314	set y [expr $y / double($h)]
	1315	set _view(xpan) [expr $_view(xpan) + $x]
	1316	set _view(ypan) [expr $_view(ypan) + $y]
	1317	PanCamera
	1318	return
	1319	}
	1320	"click" {
	1321	set _click(x) $x
	1322	set _click(y) $y
	1323	$itk_component(view) configure -cursor hand1
	1324	}
	1325	"drag" {
	1326	if { ![info exists _click(x)] } {
	1327	set _click(x) $x
	1328	}
	1329	if { ![info exists _click(y)] } {
	1330	set _click(y) $y
	1331	}
	1332	set w [winfo width $itk_component(view)]
	1333	set h [winfo height $itk_component(view)]
	1334	set dx [expr ($_click(x) - $x)/double($w)]
	1335	set dy [expr ($_click(y) - $y)/double($h)]
	1336	set _click(x) $x
	1337	set _click(y) $y
	1338	set _view(xpan) [expr $_view(xpan) - $dx]
	1339	set _view(ypan) [expr $_view(ypan) - $dy]
	1340	PanCamera
	1341	}
	1342	"release" {
	1343	Pan drag $x $y
	1344	$itk_component(view) configure -cursor ""
	1345	}
	1346	default {
	1347	error "unknown option \"$option\": should set, click, drag, or release"
	1348	}
[2718]	1349	}
	1350	}
	1351
	1352	# ----------------------------------------------------------------------
	1353	# USAGE: InitSettings <what> ?<value>?
	1354	#
	1355	# Used internally to update rendering settings whenever parameters
	1356	# change in the popup settings panel. Sends the new settings off
	1357	# to the back end.
	1358	# ----------------------------------------------------------------------
	1359	itcl::body Rappture::VtkVolumeViewer::InitSettings { args } {
	1360	foreach spec $args {
[2744]	1361	if { [info exists _settings($_first-$spec)] } {
	1362	# Reset global setting with dataobj specific setting
	1363	set _settings($spec) $_settings($_first-$spec)
	1364	}
	1365	AdjustSetting $spec
[2718]	1366	}
	1367	}
	1368
	1369	#
	1370	# AdjustSetting --
	1371	#
[2744]	1372	# Changes/updates a specific setting in the widget. There are
	1373	# usually user-setable option. Commands are sent to the render
	1374	# server.
[2718]	1375	#
	1376	itcl::body Rappture::VtkVolumeViewer::AdjustSetting {what {value ""}} {
	1377	if { ![isconnected] } {
[2744]	1378	return
[2718]	1379	}
	1380	switch -- $what {
	1381	"volume-visible" {
[2744]	1382	set bool $_settings(volume-visible)
	1383	foreach dataset [CurrentDatasets -visible] {
	1384	SendCmd "volume visible $bool $dataset"
[2718]	1385	}
[2744]	1386	if { $bool } {
	1387	Rappture::Tooltip::for $itk_component(volume) \
	1388	"Hide the volume"
	1389	} else {
	1390	Rappture::Tooltip::for $itk_component(volume) \
	1391	"Show the volume"
	1392	}
[2718]	1393	}
[2758]	1394	"volume-material" {
	1395	set val $_settings(volume-material)
	1396	set diffuse [expr {0.01*$val}]
	1397	set specular [expr {0.01*$val}]
	1398	#set power [expr {sqrt(160*$val+1.0)}]
	1399	set power [expr {$val+1.0}]
	1400	foreach dataset [CurrentDatasets -visible] {
	1401	SendCmd "volume shading diffuse $diffuse $dataset"
	1402	SendCmd "volume shading specular $specular $power $dataset"
	1403	}
	1404	}
[2718]	1405	"volume-lighting" {
[2744]	1406	set bool $_settings(volume-lighting)
	1407	foreach dataset [CurrentDatasets -visible] {
	1408	SendCmd "volume lighting $bool $dataset"
[2718]	1409	}
	1410	}
[2758]	1411	"volume-quality" {
	1412	set val $_settings(volume-quality)
	1413	set val [expr {0.01*$val}]
	1414	foreach dataset [CurrentDatasets -visible] {
	1415	SendCmd "volume quality $val $dataset"
	1416	}
	1417	}
[2718]	1418	"axis-visible" {
[2744]	1419	set bool $_settings(axis-visible)
	1420	SendCmd "axis visible all $bool"
[2718]	1421	}
	1422	"axis-labels" {
[2744]	1423	set bool $_settings(axis-labels)
	1424	SendCmd "axis labels all $bool"
[2718]	1425	}
	1426	"axis-xgrid" - "axis-ygrid" - "axis-zgrid" {
[2744]	1427	set axis [string range $what 5 5]
	1428	set bool $_settings($what)
	1429	SendCmd "axis grid $axis $bool"
[2718]	1430	}
	1431	"axis-mode" {
[2744]	1432	set mode [$itk_component(axismode) value]
	1433	set mode [$itk_component(axismode) translate $mode]
	1434	set _settings($what) $mode
	1435	SendCmd "axis flymode $mode"
[2718]	1436	}
	1437	"cutplane-edges" {
[2744]	1438	set bool $_settings($what)
	1439	foreach dataset [CurrentDatasets -visible] {
	1440	SendCmd "cutplane edges $bool $dataset"
[2718]	1441	}
	1442	}
	1443	"cutplane-visible" {
[2744]	1444	set bool $_settings($what)
	1445	foreach dataset [CurrentDatasets -visible] {
	1446	SendCmd "cutplane visible $bool $dataset"
[2718]	1447	}
	1448	}
	1449	"cutplane-wireframe" {
[2744]	1450	set bool $_settings($what)
	1451	foreach dataset [CurrentDatasets -visible] {
	1452	SendCmd "cutplane wireframe $bool $dataset"
[2718]	1453	}
	1454	}
	1455	"cutplane-lighting" {
[2744]	1456	set bool $_settings($what)
	1457	foreach dataset [CurrentDatasets -visible] {
	1458	SendCmd "cutplane lighting $bool $dataset"
[2718]	1459	}
	1460	}
	1461	"cutplane-opacity" {
[2744]	1462	set val $_settings($what)
	1463	set sval [expr { 0.01 * double($val) }]
	1464	foreach dataset [CurrentDatasets -visible] {
	1465	SendCmd "cutplane opacity $sval $dataset"
	1466	}
[2718]	1467	}
[2744]	1468	"cutplane-xvisible" - "cutplane-yvisible" - "cutplane-zvisible" {
	1469	set axis [string range $what 9 9]
	1470	set bool $_settings($what)
[2718]	1471	if { $bool } {
	1472	$itk_component(${axis}CutScale) configure -state normal \
	1473	-troughcolor white
	1474	} else {
	1475	$itk_component(${axis}CutScale) configure -state disabled \
	1476	-troughcolor grey82
	1477	}
[2755]	1478	foreach dataset [CurrentDatasets -visible] {
	1479	SendCmd "cutplane axis $axis $bool $dataset"
	1480	}
[2744]	1481	}
	1482	"cutplane-xposition" - "cutplane-yposition" - "cutplane-zposition" {
	1483	set axis [string range $what 9 9]
	1484	set pos [expr $_settings($what) * 0.01]
[2755]	1485	foreach dataset [CurrentDatasets -visible] {
	1486	SendCmd "cutplane slice ${axis} ${pos} $dataset"
	1487	}
[2744]	1488	set _cutplanePending 0
	1489	}
[2718]	1490	"volume-palette" {
[2744]	1491	set palette [$itk_component(palette) value]
	1492	set _settings(volume-palette) $palette
	1493	foreach dataset [CurrentDatasets -visible $_first] {
	1494	foreach {dataobj comp} [split $dataset -] break
	1495	ChangeColormap $dataobj $comp $palette
[2718]	1496	}
[2744]	1497	set _legendPending 1
[2718]	1498	}
	1499	"volume-palette" {
[2744]	1500	set palette [$itk_component(palette) value]
	1501	set _settings(volume-palette) $palette
	1502	foreach dataset [CurrentDatasets -visible $_first] {
	1503	foreach {dataobj comp} [split $dataset -] break
	1504	ChangeColormap $dataobj $comp $palette
[2718]	1505	}
[2744]	1506	set _legendPending 1
[2718]	1507	}
	1508	"volume-field" {
[2744]	1509	set new [$itk_component(field) value]
	1510	set value [$itk_component(field) translate $new]
	1511	set _settings(volume-field) $value
	1512	if { [info exists _scalarFields($new)] } {
	1513	set name $_scalarFields($new)
	1514	set _colorMode scalar
	1515	set _currentField $new
	1516	} elseif { [info exists _vectorFields($new)] } {
	1517	set name $_vectorFields($new)
	1518	set _colorMode vmag
	1519	set _currentField $new
	1520	} else {
	1521	puts stderr "unknown field \"$new\""
	1522	return
[2718]	1523	}
[2744]	1524	foreach dataset [CurrentDatasets -visible] {
	1525	#puts stderr "volume colormode $_colorMode ${name} $dataset"
	1526	puts stderr "cutplane colormode $_colorMode ${name} $dataset"
	1527	#SendCmd "volume colormode $_colorMode ${name} $dataset"
	1528	SendCmd "cutplane colormode $_colorMode ${name} $dataset"
	1529	}
	1530	set _legendPending 1
[2718]	1531	}
	1532	default {
	1533	error "don't know how to fix $what"
	1534	}
	1535	}
	1536	}
	1537
	1538	#
	1539	# RequestLegend --
	1540	#
[2744]	1541	# Request a new legend from the server. The size of the legend
	1542	# is determined from the height of the canvas. It will be rotated
	1543	# to be vertical when drawn.
[2718]	1544	#
	1545	itcl::body Rappture::VtkVolumeViewer::RequestLegend {} {
	1546	set font "Arial 8"
	1547	set lineht [font metrics $font -linespace]
	1548	set c $itk_component(legend)
	1549	set w 12
	1550	set h [expr {$_height - 3 * ($lineht + 2)}]
	1551	if { $h < 1} {
[2744]	1552	return
[2718]	1553	}
	1554	if { [info exists _scalarFields($_currentField)] } {
[2744]	1555	set name $_scalarFields($_currentField)
[2718]	1556	} elseif { [info exists _vectorFields($_currentField)] } {
[2744]	1557	set name $_vectorFields($_currentField)
[2718]	1558	} else {
[2744]	1559	return
[2718]	1560	}
	1561	# Set the legend on the first volume dataset.
	1562	foreach dataset [CurrentDatasets -visible $_first] {
[2744]	1563	foreach {dataobj comp} [split $dataset -] break
	1564	if { [info exists _dataset2style($dataset)] } {
[2718]	1565	SendCmdNoWait \
[2744]	1566	"legend $_dataset2style($dataset) $_colorMode $name {} $w $h 0"
	1567	break;
[2718]	1568	}
	1569	}
	1570	}
	1571
	1572	#
	1573	# ChangeColormap --
	1574	#
	1575	itcl::body Rappture::VtkVolumeViewer::ChangeColormap {dataobj comp color} {
	1576	set tag $dataobj-$comp
	1577	if { ![info exist _style($tag)] } {
[2744]	1578	error "no initial colormap"
[2718]	1579	}
	1580	array set style $_style($tag)
	1581	set style(-color) $color
	1582	set _style($tag) [array get style]
	1583	SetColormap $dataobj $comp
	1584	}
	1585
	1586	#
	1587	# SetColormap --
	1588	#
	1589	itcl::body Rappture::VtkVolumeViewer::SetColormap { dataobj comp } {
	1590	array set style {
[3395]	1591	-color BCGYR
[2718]	1592	-levels 6
	1593	-opacity 1.0
	1594	}
	1595	set tag $dataobj-$comp
	1596	if { ![info exists _initialStyle($tag)] } {
[2744]	1597	# Save the initial component style.
	1598	set _initialStyle($tag) [$dataobj style $comp]
[2718]	1599	}
	1600
	1601	# Override defaults with initial style defined in xml.
	1602	array set style $_initialStyle($tag)
	1603
	1604	if { ![info exists _style($tag)] } {
[2744]	1605	set _style($tag) [array get style]
[2718]	1606	}
	1607	# Override initial style with current style.
	1608	array set style $_style($tag)
	1609
	1610	set name "$style(-color):$style(-levels):$style(-opacity)"
	1611	if { ![info exists _colormaps($name)] } {
[2744]	1612	BuildColormap $name [array get style]
	1613	set _colormaps($name) 1
[2718]	1614	}
	1615	if { ![info exists _dataset2style($tag)] \|\|
[2744]	1616	$_dataset2style($tag) != $name } {
	1617	SendCmd "volume colormap $name $tag"
[2754]	1618	SendCmd "cutplane colormap $name-opaque $tag"
[2744]	1619	set _dataset2style($tag) $name
[2718]	1620	}
	1621	}
	1622
	1623	#
	1624	# BuildColormap --
	1625	#
	1626	itcl::body Rappture::VtkVolumeViewer::BuildColormap { name styles } {
	1627	array set style $styles
	1628	set cmap [ColorsToColormap $style(-color)]
	1629	if { [llength $cmap] == 0 } {
[2744]	1630	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
[2718]	1631	}
	1632	if { ![info exists _settings(volume-opacity)] } {
	1633	set _settings(volume-opacity) $style(-opacity)
	1634	}
	1635	set max $_settings(volume-opacity)
	1636
[2754]	1637	set opaqueWmap "0.0 1.0 1.0 1.0"
[2758]	1638	#set wmap "0.0 0.0 0.1 0.0 0.2 0.8 0.98 0.8 0.99 0.0 1.0 0.0"
	1639	# Approximate cubic opacity curve
	1640	set wmap "0.0 0.0 0.1 0.001 0.2 0.008 0.3 0.027 0.4 0.064 0.5 0.125 0.6 0.216 0.7 0.343 0.8 0.512 0.9 0.729 1.0 1.0"
[2718]	1641	SendCmd "colormap add $name { $cmap } { $wmap }"
[2754]	1642	SendCmd "colormap add $name-opaque { $cmap } { $opaqueWmap }"
[2718]	1643	}
	1644
	1645	# ----------------------------------------------------------------------
	1646	# CONFIGURATION OPTION: -plotbackground
	1647	# ----------------------------------------------------------------------
	1648	itcl::configbody Rappture::VtkVolumeViewer::plotbackground {
	1649	if { [isconnected] } {
	1650	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
	1651	SendCmd "screen bgcolor $r $g $b"
	1652	}
	1653	}
	1654
	1655	# ----------------------------------------------------------------------
	1656	# CONFIGURATION OPTION: -plotforeground
	1657	# ----------------------------------------------------------------------
	1658	itcl::configbody Rappture::VtkVolumeViewer::plotforeground {
	1659	if { [isconnected] } {
	1660	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
	1661	#fix this!
	1662	#SendCmd "color background $r $g $b"
	1663	}
	1664	}
	1665
	1666	itcl::body Rappture::VtkVolumeViewer::limits { dataobj } {
[2728]	1667	return
[2718]	1668	array unset _limits $dataobj-*
	1669	foreach comp [$dataobj components] {
[2744]	1670	set tag $dataobj-$comp
	1671	if { ![info exists _limits($tag)] } {
	1672	set data [$dataobj blob $comp]
	1673	set tmpfile file[pid].vtk
	1674	set f [open "$tmpfile" "w"]
	1675	fconfigure $f -translation binary -encoding binary
	1676	puts $f $data
	1677	close $f
	1678	set reader [vtkDataSetReader $tag-xvtkDataSetReader]
	1679	$reader SetFileName $tmpfile
	1680	$reader ReadAllScalarsOn
	1681	$reader ReadAllVectorsOn
	1682	$reader ReadAllFieldsOn
	1683	$reader Update
	1684	set output [$reader GetOutput]
	1685	set _limits($tag) [$output GetBounds]
	1686	set pointData [$output GetPointData]
	1687	puts stderr "\#scalars=[$reader GetNumberOfScalarsInFile]"
	1688	puts stderr "\#fielddata=[$reader GetNumberOfFieldDataInFile]"
	1689	puts stderr "fielddataname=[$reader GetFieldDataNameInFile 0]"
	1690	set fieldData [$output GetFieldData]
	1691	set pointData [$output GetPointData]
	1692	puts stderr "field \#arrays=[$fieldData GetNumberOfArrays]"
	1693	for { set i 0 } { $i < [$fieldData GetNumberOfArrays] } { incr i } {
	1694	puts stderr [$fieldData GetArrayName $i]
	1695	}
	1696	puts stderr "point \#arrays=[$pointData GetNumberOfArrays]"
	1697	for { set i 0 } { $i < [$pointData GetNumberOfArrays] } { incr i } {
	1698	set name [$pointData GetArrayName $i]
	1699	if { ![info exists _fields($name)] } {
	1700	$itk_component(field) choices insert end "$name" "$name"
	1701	set _fields($name) 1
	1702	}
	1703	}
	1704	puts stderr "field \#components=[$fieldData GetNumberOfComponents]"
	1705	puts stderr "point \#components=[$pointData GetNumberOfComponents]"
	1706	puts stderr "field \#tuples=[$fieldData GetNumberOfTuples]"
	1707	puts stderr "point \#tuples=[$pointData GetNumberOfTuples]"
	1708	puts stderr "point \#scalars=[$pointData GetScalars]"
	1709	puts stderr vectors=[$pointData GetVectors]
	1710	rename $output ""
	1711	rename $reader ""
	1712	file delete $tmpfile
	1713	}
[2718]	1714	foreach { xMin xMax yMin yMax zMin zMax} $_limits($tag) break
[2744]	1715	if {![info exists limits(xmin)] \|\| $limits(xmin) > $xMin} {
	1716	set limits(xmin) $xMin
	1717	}
	1718	if {![info exists limits(xmax)] \|\| $limits(xmax) < $xMax} {
	1719	set limits(xmax) $xMax
	1720	}
	1721	if {![info exists limits(ymin)] \|\| $limits(ymin) > $yMin} {
	1722	set limits(ymin) $xMin
	1723	}
	1724	if {![info exists limits(ymax)] \|\| $limits(ymax) < $yMax} {
	1725	set limits(ymax) $yMax
	1726	}
	1727	if {![info exists limits(zmin)] \|\| $limits(zmin) > $zMin} {
	1728	set limits(zmin) $zMin
	1729	}
	1730	if {![info exists limits(zmax)] \|\| $limits(zmax) < $zMax} {
	1731	set limits(zmax) $zMax
	1732	}
[2718]	1733	}
	1734	return [array get limits]
	1735	}
	1736
	1737	itcl::body Rappture::VtkVolumeViewer::BuildVolumeTab {} {
	1738
	1739	set fg [option get $itk_component(hull) font Font]
	1740	#set bfg [option get $itk_component(hull) boldFont Font]
	1741
	1742	set inner [$itk_component(main) insert end \
	1743	-title "Volume Settings" \
	1744	-icon [Rappture::icon volume-on]]
	1745	$inner configure -borderwidth 4
	1746
	1747	checkbutton $inner.volume \
	1748	-text "Show Volume" \
	1749	-variable [itcl::scope _settings(volume-visible)] \
	1750	-command [itcl::code $this AdjustSetting volume-visible] \
	1751	-font "Arial 9"
	1752
	1753	checkbutton $inner.lighting \
	1754	-text "Enable Lighting" \
	1755	-variable [itcl::scope _settings(volume-lighting)] \
	1756	-command [itcl::code $this AdjustSetting volume-lighting] \
	1757	-font "Arial 9"
	1758
[2758]	1759	label $inner.dim_l -text "Dim" -font "Arial 9"
	1760	::scale $inner.material -from 0 -to 100 -orient horizontal \
	1761	-variable [itcl::scope _settings(volume-material)] \
	1762	-width 10 \
	1763	-showvalue off -command [itcl::code $this AdjustSetting volume-material]
	1764	label $inner.bright_l -text "Bright" -font "Arial 9"
	1765
[2718]	1766	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1767	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
	1768	-variable [itcl::scope _settings(volume-opacity)] \
	1769	-width 10 \
	1770	-showvalue off \
[2744]	1771	-command [itcl::code $this AdjustSetting volume-opacity]
[2718]	1772
[2758]	1773	label $inner.quality_l -text "Quality" -font "Arial 9"
	1774	::scale $inner.quality -from 0 -to 100 -orient horizontal \
	1775	-variable [itcl::scope _settings(volume-quality)] \
	1776	-width 10 \
	1777	-showvalue off -command [itcl::code $this AdjustSetting volume-quality]
	1778
[2718]	1779	label $inner.field_l -text "Field" -font "Arial 9"
	1780	itk_component add field {
[2744]	1781	Rappture::Combobox $inner.field -width 10 -editable no
[2718]	1782	}
	1783	bind $inner.field <<Value>> \
[2744]	1784	[itcl::code $this AdjustSetting volume-field]
[2718]	1785
	1786	label $inner.palette_l -text "Palette" -font "Arial 9"
	1787	itk_component add palette {
[2744]	1788	Rappture::Combobox $inner.palette -width 10 -editable no
[2718]	1789	}
	1790	$inner.palette choices insert end \
[2744]	1791	"BCGYR" "BCGYR" \
	1792	"BGYOR" "BGYOR" \
	1793	"blue" "blue" \
	1794	"blue-to-brown" "blue-to-brown" \
	1795	"blue-to-orange" "blue-to-orange" \
	1796	"blue-to-grey" "blue-to-grey" \
	1797	"green-to-magenta" "green-to-magenta" \
	1798	"greyscale" "greyscale" \
	1799	"nanohub" "nanohub" \
	1800	"rainbow" "rainbow" \
	1801	"spectral" "spectral" \
	1802	"ROYGB" "ROYGB" \
	1803	"RYGCB" "RYGCB" \
	1804	"brown-to-blue" "brown-to-blue" \
	1805	"grey-to-blue" "grey-to-blue" \
	1806	"orange-to-blue" "orange-to-blue"
[2718]	1807
[3395]	1808	$itk_component(palette) value "BCGYR"
[2718]	1809	bind $inner.palette <<Value>> \
[2744]	1810	[itcl::code $this AdjustSetting volume-palette]
[2718]	1811
	1812	blt::table $inner \
[2758]	1813	0,0 $inner.volume -anchor w -pady 2 -cspan 4 \
	1814	2,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
	1815	3,0 $inner.dim_l -anchor e -pady 2 \
	1816	3,1 $inner.material -fill x -pady 2 \
	1817	3,2 $inner.bright_l -anchor w -pady 2 \
	1818	4,0 $inner.quality_l -anchor w -pady 2 -cspan 2 \
	1819	5,0 $inner.quality -fill x -pady 2 -cspan 2 \
	1820	6,0 $inner.field_l -anchor w -pady 2 \
	1821	6,1 $inner.field -anchor w -pady 2 -cspan 2 \
	1822	7,0 $inner.palette_l -anchor w -pady 2 \
	1823	7,1 $inner.palette -anchor w -pady 2 -cspan 2 \
[2718]	1824
	1825	blt::table configure $inner r* c* -resize none
[2758]	1826	blt::table configure $inner r8 c3 -resize expand
[2718]	1827	}
	1828
	1829	itcl::body Rappture::VtkVolumeViewer::BuildAxisTab {} {
	1830
	1831	set fg [option get $itk_component(hull) font Font]
	1832	#set bfg [option get $itk_component(hull) boldFont Font]
	1833
	1834	set inner [$itk_component(main) insert end \
	1835	-title "Axis Settings" \
	1836	-icon [Rappture::icon axis1]]
	1837	$inner configure -borderwidth 4
	1838
	1839	checkbutton $inner.visible \
	1840	-text "Show Axes" \
	1841	-variable [itcl::scope _settings(axis-visible)] \
	1842	-command [itcl::code $this AdjustSetting axis-visible] \
	1843	-font "Arial 9"
	1844
	1845	checkbutton $inner.labels \
	1846	-text "Show Axis Labels" \
	1847	-variable [itcl::scope _settings(axis-labels)] \
	1848	-command [itcl::code $this AdjustSetting axis-labels] \
	1849	-font "Arial 9"
	1850
	1851	checkbutton $inner.gridx \
	1852	-text "Show X Grid" \
	1853	-variable [itcl::scope _settings(axis-xgrid)] \
	1854	-command [itcl::code $this AdjustSetting axis-xgrid] \
	1855	-font "Arial 9"
	1856	checkbutton $inner.gridy \
	1857	-text "Show Y Grid" \
	1858	-variable [itcl::scope _settings(axis-ygrid)] \
	1859	-command [itcl::code $this AdjustSetting axis-ygrid] \
	1860	-font "Arial 9"
	1861	checkbutton $inner.gridz \
	1862	-text "Show Z Grid" \
	1863	-variable [itcl::scope _settings(axis-zgrid)] \
	1864	-command [itcl::code $this AdjustSetting axis-zgrid] \
	1865	-font "Arial 9"
	1866
	1867	label $inner.mode_l -text "Mode" -font "Arial 9"
	1868
	1869	itk_component add axismode {
[2744]	1870	Rappture::Combobox $inner.mode -width 10 -editable no
[2718]	1871	}
	1872	$inner.mode choices insert end \
	1873	"static_triad" "static" \
	1874	"closest_triad" "closest" \
	1875	"furthest_triad" "furthest" \
	1876	"outer_edges" "outer"
	1877	$itk_component(axismode) value "static"
	1878	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
	1879
	1880	blt::table $inner \
	1881	0,0 $inner.visible -anchor w -cspan 2 \
	1882	1,0 $inner.labels -anchor w -cspan 2 \
	1883	2,0 $inner.gridx -anchor w -cspan 2 \
	1884	3,0 $inner.gridy -anchor w -cspan 2 \
	1885	4,0 $inner.gridz -anchor w -cspan 2 \
	1886	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
	1887	6,0 $inner.mode -fill x -cspan 2
	1888
	1889	blt::table configure $inner r* c* -resize none
	1890	blt::table configure $inner r7 c1 -resize expand
	1891	}
	1892
	1893
	1894	itcl::body Rappture::VtkVolumeViewer::BuildCameraTab {} {
	1895	set inner [$itk_component(main) insert end \
	1896	-title "Camera Settings" \
	1897	-icon [Rappture::icon camera]]
	1898	$inner configure -borderwidth 4
	1899
	1900	set labels { qx qy qz qw xpan ypan zoom }
	1901	set row 0
	1902	foreach tag $labels {
	1903	label $inner.${tag}label -text $tag -font "Arial 9"
	1904	entry $inner.${tag} -font "Arial 9" -bg white \
	1905	-textvariable [itcl::scope _view($tag)]
	1906	bind $inner.${tag} <KeyPress-Return> \
	1907	[itcl::code $this camera set ${tag}]
	1908	blt::table $inner \
	1909	$row,0 $inner.${tag}label -anchor e -pady 2 \
	1910	$row,1 $inner.${tag} -anchor w -pady 2
	1911	blt::table configure $inner r$row -resize none
	1912	incr row
	1913	}
	1914	checkbutton $inner.ortho \
	1915	-text "Orthographic Projection" \
	1916	-variable [itcl::scope _view(ortho)] \
	1917	-command [itcl::code $this camera set ortho] \
	1918	-font "Arial 9"
	1919	blt::table $inner \
	1920	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
	1921	blt::table configure $inner r$row -resize none
	1922	incr row
	1923
	1924	blt::table configure $inner c0 c1 -resize none
	1925	blt::table configure $inner c2 -resize expand
	1926	blt::table configure $inner r$row -resize expand
	1927	}
	1928
	1929	itcl::body Rappture::VtkVolumeViewer::BuildCutplaneTab {} {
	1930
	1931	set fg [option get $itk_component(hull) font Font]
	1932
	1933	set inner [$itk_component(main) insert end \
	1934	-title "Cutplane Settings" \
[2744]	1935	-icon [Rappture::icon cutbutton]]
[2718]	1936
	1937	$inner configure -borderwidth 4
	1938
	1939	checkbutton $inner.visible \
	1940	-text "Show Cutplanes" \
	1941	-variable [itcl::scope _settings(cutplane-visible)] \
	1942	-command [itcl::code $this AdjustSetting cutplane-visible] \
	1943	-font "Arial 9"
	1944
	1945	checkbutton $inner.wireframe \
	1946	-text "Show Wireframe" \
	1947	-variable [itcl::scope _settings(cutplane-wireframe)] \
	1948	-command [itcl::code $this AdjustSetting cutplane-wireframe] \
	1949	-font "Arial 9"
	1950
	1951	checkbutton $inner.lighting \
	1952	-text "Enable Lighting" \
	1953	-variable [itcl::scope _settings(cutplane-lighting)] \
	1954	-command [itcl::code $this AdjustSetting cutplane-lighting] \
	1955	-font "Arial 9"
	1956
	1957	checkbutton $inner.edges \
	1958	-text "Show Edges" \
	1959	-variable [itcl::scope _settings(cutplane-edges)] \
	1960	-command [itcl::code $this AdjustSetting cutplane-edges] \
	1961	-font "Arial 9"
	1962
	1963	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1964	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
	1965	-variable [itcl::scope _settings(cutplane-opacity)] \
	1966	-width 10 \
	1967	-showvalue off \
[2744]	1968	-command [itcl::code $this AdjustSetting cutplane-opacity]
[2718]	1969	$inner.opacity set $_settings(cutplane-opacity)
	1970
	1971	# X-value slicer...
	1972	itk_component add xCutButton {
	1973	Rappture::PushButton $inner.xbutton \
	1974	-onimage [Rappture::icon x-cutplane] \
	1975	-offimage [Rappture::icon x-cutplane] \
	1976	-command [itcl::code $this AdjustSetting cutplane-xvisible] \
	1977	-variable [itcl::scope _settings(cutplane-xvisible)]
	1978	}
	1979	Rappture::Tooltip::for $itk_component(xCutButton) \
	1980	"Toggle the X-axis cutplane on/off"
	1981
	1982	itk_component add xCutScale {
[3330]	1983	::scale $inner.xval -from 100 -to 0 \
[2718]	1984	-width 10 -orient vertical -showvalue yes \
	1985	-borderwidth 1 -highlightthickness 0 \
	1986	-command [itcl::code $this EventuallySetCutplane x] \
	1987	-variable [itcl::scope _settings(cutplane-xposition)]
	1988	} {
	1989	usual
	1990	ignore -borderwidth -highlightthickness
	1991	}
	1992	# Set the default cutplane value before disabling the scale.
	1993	$itk_component(xCutScale) set 50
	1994	$itk_component(xCutScale) configure -state disabled
	1995	Rappture::Tooltip::for $itk_component(xCutScale) \
	1996	"@[itcl::code $this Slice tooltip x]"
	1997
	1998	# Y-value slicer...
	1999	itk_component add yCutButton {
	2000	Rappture::PushButton $inner.ybutton \
	2001	-onimage [Rappture::icon y-cutplane] \
	2002	-offimage [Rappture::icon y-cutplane] \
	2003	-command [itcl::code $this AdjustSetting cutplane-yvisible] \
	2004	-variable [itcl::scope _settings(cutplane-yvisible)]
	2005	}
	2006	Rappture::Tooltip::for $itk_component(yCutButton) \
	2007	"Toggle the Y-axis cutplane on/off"
	2008
	2009	itk_component add yCutScale {
[3330]	2010	::scale $inner.yval -from 100 -to 0 \
[2718]	2011	-width 10 -orient vertical -showvalue yes \
	2012	-borderwidth 1 -highlightthickness 0 \
	2013	-command [itcl::code $this EventuallySetCutplane y] \
	2014	-variable [itcl::scope _settings(cutplane-yposition)]
	2015	} {
	2016	usual
	2017	ignore -borderwidth -highlightthickness
	2018	}
	2019	Rappture::Tooltip::for $itk_component(yCutScale) \
	2020	"@[itcl::code $this Slice tooltip y]"
	2021	# Set the default cutplane value before disabling the scale.
	2022	$itk_component(yCutScale) set 50
	2023	$itk_component(yCutScale) configure -state disabled
	2024
	2025	# Z-value slicer...
	2026	itk_component add zCutButton {
	2027	Rappture::PushButton $inner.zbutton \
	2028	-onimage [Rappture::icon z-cutplane] \
	2029	-offimage [Rappture::icon z-cutplane] \
	2030	-command [itcl::code $this AdjustSetting cutplane-zvisible] \
	2031	-variable [itcl::scope _settings(cutplane-zvisible)]
	2032	}
	2033	Rappture::Tooltip::for $itk_component(zCutButton) \
	2034	"Toggle the Z-axis cutplane on/off"
	2035
	2036	itk_component add zCutScale {
[3330]	2037	::scale $inner.zval -from 100 -to 0 \
[2718]	2038	-width 10 -orient vertical -showvalue yes \
	2039	-borderwidth 1 -highlightthickness 0 \
	2040	-command [itcl::code $this EventuallySetCutplane z] \
	2041	-variable [itcl::scope _settings(cutplane-zposition)]
	2042	} {
	2043	usual
	2044	ignore -borderwidth -highlightthickness
	2045	}
	2046	$itk_component(zCutScale) set 50
	2047	$itk_component(zCutScale) configure -state disabled
	2048	#$itk_component(zCutScale) configure -state disabled
	2049	Rappture::Tooltip::for $itk_component(zCutScale) \
	2050	"@[itcl::code $this Slice tooltip z]"
	2051
	2052	blt::table $inner \
[2744]	2053	0,0 $inner.visible -anchor w -pady 2 -cspan 4 \
	2054	1,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
	2055	2,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
	2056	3,0 $inner.edges -anchor w -pady 2 -cspan 4 \
	2057	4,0 $inner.opacity_l -anchor w -pady 2 -cspan 3 \
	2058	5,0 $inner.opacity -fill x -pady 2 -cspan 3 \
[2718]	2059	6,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
	2060	7,0 $itk_component(xCutScale) -fill y \
	2061	6,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
	2062	7,1 $itk_component(yCutScale) -fill y \
	2063	6,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
	2064	7,2 $itk_component(zCutScale) -fill y \
	2065
	2066	blt::table configure $inner r* c* -resize none
	2067	blt::table configure $inner r7 c3 -resize expand
	2068	}
	2069
	2070	#
	2071	# camera --
	2072	#
	2073	itcl::body Rappture::VtkVolumeViewer::camera {option args} {
	2074	switch -- $option {
	2075	"show" {
	2076	puts [array get _view]
	2077	}
	2078	"set" {
	2079	set who [lindex $args 0]
	2080	set x $_view($who)
	2081	set code [catch { string is double $x } result]
	2082	if { $code != 0 \|\| !$result } {
	2083	return
	2084	}
	2085	switch -- $who {
	2086	"ortho" {
	2087	if {$_view(ortho)} {
	2088	SendCmd "camera mode ortho"
	2089	} else {
	2090	SendCmd "camera mode persp"
	2091	}
	2092	}
	2093	"xpan" - "ypan" {
	2094	PanCamera
	2095	}
	2096	"qx" - "qy" - "qz" - "qw" {
	2097	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
[2744]	2098	$_arcball quaternion $q
	2099	EventuallyRotate $q
[2718]	2100	}
	2101	"zoom" {
	2102	SendCmd "camera zoom $_view(zoom)"
	2103	}
	2104	}
	2105	}
	2106	}
	2107	}
	2108
	2109	itcl::body Rappture::VtkVolumeViewer::ConvertToVtkData { dataobj comp } {
	2110	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
	2111	set values [$dataobj values $comp]
	2112	append out "# vtk DataFile Version 2.0 \n"
	2113	append out "Test data \n"
	2114	append out "ASCII \n"
	2115	append out "DATASET STRUCTURED_POINTS \n"
	2116	append out "DIMENSIONS $xN $yN 1 \n"
	2117	append out "ORIGIN 0 0 0 \n"
	2118	append out "SPACING 1 1 1 \n"
	2119	append out "POINT_DATA [expr $xN * $yN] \n"
	2120	append out "SCALARS field float 1 \n"
	2121	append out "LOOKUP_TABLE default \n"
	2122	append out [join $values "\n"]
	2123	append out "\n"
	2124	return $out
	2125	}
	2126
	2127
	2128	itcl::body Rappture::VtkVolumeViewer::GetVtkData { args } {
	2129	set bytes ""
	2130	foreach dataobj [get] {
	2131	foreach comp [$dataobj components] {
	2132	set tag $dataobj-$comp
[2744]	2133	#set contents [ConvertToVtkData $dataobj $comp]
	2134	set contents [$dataobj blob $comp]
	2135	append bytes "$contents\n\n"
[2718]	2136	}
	2137	}
	2138	return [list .vtk $bytes]
	2139	}
	2140
	2141	itcl::body Rappture::VtkVolumeViewer::GetImage { args } {
	2142	if { [image width $_image(download)] > 0 &&
[2744]	2143	[image height $_image(download)] > 0 } {
	2144	set bytes [$_image(download) data -format "jpeg -quality 100"]
	2145	set bytes [Rappture::encoding::decode -as b64 $bytes]
	2146	return [list .jpg $bytes]
[2718]	2147	}
	2148	return ""
	2149	}
	2150
	2151	itcl::body Rappture::VtkVolumeViewer::BuildDownloadPopup { popup command } {
	2152	Rappture::Balloon $popup \
	2153	-title "[Rappture::filexfer::label downloadWord] as..."
	2154	set inner [$popup component inner]
	2155	label $inner.summary -text "" -anchor w
	2156	radiobutton $inner.vtk_button -text "VTK data file" \
	2157	-variable [itcl::scope _downloadPopup(format)] \
	2158	-font "Helvetica 9 " \
	2159	-value vtk
	2160	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
	2161	radiobutton $inner.image_button -text "Image File" \
	2162	-variable [itcl::scope _downloadPopup(format)] \
	2163	-value image
	2164	Rappture::Tooltip::for $inner.image_button \
	2165	"Save as digital image."
	2166
	2167	button $inner.ok -text "Save" \
[2744]	2168	-highlightthickness 0 -pady 2 -padx 3 \
[2718]	2169	-command $command \
[2744]	2170	-compound left \
	2171	-image [Rappture::icon download]
[2718]	2172
	2173	button $inner.cancel -text "Cancel" \
[2744]	2174	-highlightthickness 0 -pady 2 -padx 3 \
	2175	-command [list $popup deactivate] \
	2176	-compound left \
	2177	-image [Rappture::icon cancel]
[2718]	2178
	2179	blt::table $inner \
	2180	0,0 $inner.summary -cspan 2 \
	2181	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
	2182	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
	2183	4,1 $inner.cancel -width .9i -fill y \
	2184	4,0 $inner.ok -padx 2 -width .9i -fill y
	2185	blt::table configure $inner r3 -height 4
	2186	blt::table configure $inner r4 -pady 4
	2187	raise $inner.image_button
	2188	$inner.vtk_button invoke
	2189	return $inner
	2190	}
	2191
	2192	itcl::body Rappture::VtkVolumeViewer::SetObjectStyle { dataobj comp } {
	2193	# Parse style string.
	2194	set tag $dataobj-$comp
	2195	set style [$dataobj style $comp]
	2196	array set settings {
[2744]	2197	-color \#808080
	2198	-edges 0
	2199	-edgecolor black
	2200	-linewidth 1.0
	2201	-opacity 0.4
	2202	-wireframe 0
	2203	-lighting 1
	2204	-seeds 1
	2205	-seedcolor white
	2206	-visible 1
[2718]	2207	}
	2208	if { $dataobj != $_first } {
[2744]	2209	set settings(-opacity) 1
[2718]	2210	}
	2211	array set settings $style
	2212	SendCmd "volume add $tag"
	2213	SendCmd "cutplane add $tag"
	2214	SendCmd "cutplane edges 0 $tag"
	2215	SendCmd "cutplane wireframe 0 $tag"
	2216	SendCmd "cutplane lighting 1 $tag"
	2217	SendCmd "cutplane linewidth 1 $tag"
	2218	#SendCmd "cutplane linecolor 1 1 1 $tag"
	2219	#SendCmd "cutplane visible $tag"
	2220	foreach axis { x y z } {
[2749]	2221	SendCmd "cutplane slice $axis 0.5 $tag"
[2744]	2222	SendCmd "cutplane axis $axis 0 $tag"
[2718]	2223	}
	2224
[2722]	2225	SendCmd "volume lighting $settings(-lighting) $tag"
[2718]	2226	set _settings(volume-lighting) $settings(-lighting)
	2227	SetColormap $dataobj $comp
	2228	}
	2229
	2230	itcl::body Rappture::VtkVolumeViewer::IsValidObject { dataobj } {
	2231	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
[2744]	2232	return 0
[2718]	2233	}
	2234	return 1
	2235	}
	2236
	2237	# ----------------------------------------------------------------------
	2238	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
	2239	#
	2240	# Invoked automatically whenever the "legend" command comes in from
	2241	# the rendering server. Indicates that binary image data with the
	2242	# specified <size> will follow.
	2243	# ----------------------------------------------------------------------
	2244	itcl::body Rappture::VtkVolumeViewer::ReceiveLegend { colormap title vmin vmax size } {
	2245	set _legendPending 0
	2246	puts stderr "ReceiveLegend colormap=$colormap title=$title range=$vmin,$vmax size=$size"
	2247	set _limits(vmin) $vmin
	2248	set _limits(vmax) $vmax
	2249	set _title $title
	2250	regsub {\(mag\)} $title "" _title
	2251	if { [IsConnected] } {
	2252	set bytes [ReceiveBytes $size]
	2253	if { ![info exists _image(legend)] } {
	2254	set _image(legend) [image create photo]
	2255	}
	2256	$_image(legend) configure -data $bytes
	2257	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
[2744]	2258	if { [catch {DrawLegend $_title} errs] != 0 } {
	2259	puts stderr errs=$errs
	2260	}
[2718]	2261	}
	2262	}
	2263
	2264	#
	2265	# DrawLegend --
	2266	#
[2744]	2267	# Draws the legend in it's own canvas which resides to the right
	2268	# of the contour plot area.
[2718]	2269	#
	2270	itcl::body Rappture::VtkVolumeViewer::DrawLegend { name } {
	2271	set c $itk_component(view)
	2272	set w [winfo width $c]
	2273	set h [winfo height $c]
	2274	set font "Arial 8"
	2275	set lineht [font metrics $font -linespace]
	2276
	2277	if { [info exists _fields($name)] } {
[2744]	2278	foreach { title units } $_fields($name) break
	2279	if { $units != "" } {
	2280	set title [format "%s (%s)" $title $units]
	2281	}
[2718]	2282	} else {
[2744]	2283	set title $name
[2718]	2284	}
	2285	if { $_settings(legend-visible) } {
[2744]	2286	set x [expr $w - 2]
	2287	if { [$c find withtag "legend"] == "" } {
	2288	set y 2
	2289	$c create text $x $y \
	2290	-anchor ne \
	2291	-fill $itk_option(-plotforeground) -tags "title legend" \
	2292	-font $font
	2293	incr y $lineht
	2294	$c create text $x $y \
	2295	-anchor ne \
	2296	-fill $itk_option(-plotforeground) -tags "vmax legend" \
	2297	-font $font
	2298	incr y $lineht
	2299	$c create image $x $y \
	2300	-anchor ne \
	2301	-image $_image(legend) -tags "colormap legend"
	2302	$c create text $x [expr {$h-2}] \
	2303	-anchor se \
	2304	-fill $itk_option(-plotforeground) -tags "vmin legend" \
	2305	-font $font
	2306	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
	2307	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
	2308	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
	2309	}
	2310	$c bind title <ButtonPress> [itcl::code $this Combo post]
	2311	$c bind title <Enter> [itcl::code $this Combo activate]
	2312	$c bind title <Leave> [itcl::code $this Combo deactivate]
	2313	# Reset the item coordinates according the current size of the plot.
	2314	$c itemconfigure title -text $title
	2315	if { $_limits(vmin) != "" } {
	2316	$c itemconfigure vmin -text [format %g $_limits(vmin)]
	2317	}
	2318	if { $_limits(vmax) != "" } {
	2319	$c itemconfigure vmax -text [format %g $_limits(vmax)]
	2320	}
	2321	set y 2
	2322	$c coords title $x $y
	2323	incr y $lineht
	2324	$c coords vmax $x $y
	2325	incr y $lineht
	2326	$c coords colormap $x $y
	2327	$c coords vmin $x [expr {$h - 2}]
[2718]	2328	}
	2329	}
	2330
	2331	#
	2332	# EnterLegend --
	2333	#
	2334	itcl::body Rappture::VtkVolumeViewer::EnterLegend { x y } {
	2335	SetLegendTip $x $y
	2336	}
	2337
	2338	#
	2339	# MotionLegend --
	2340	#
	2341	itcl::body Rappture::VtkVolumeViewer::MotionLegend { x y } {
	2342	Rappture::Tooltip::tooltip cancel
	2343	set c $itk_component(view)
	2344	SetLegendTip $x $y
	2345	}
	2346
	2347	#
	2348	# LeaveLegend --
	2349	#
	2350	itcl::body Rappture::VtkVolumeViewer::LeaveLegend { } {
	2351	Rappture::Tooltip::tooltip cancel
	2352	.rappturetooltip configure -icon ""
	2353	}
	2354
	2355	#
	2356	# SetLegendTip --
	2357	#
	2358	itcl::body Rappture::VtkVolumeViewer::SetLegendTip { x y } {
	2359	set c $itk_component(view)
	2360	set w [winfo width $c]
	2361	set h [winfo height $c]
	2362	set font "Arial 8"
	2363	set lineht [font metrics $font -linespace]
	2364
	2365	set imgHeight [image height $_image(legend)]
	2366	set coords [$c coords colormap]
	2367	set imgX [expr $w - [image width $_image(legend)] - 2]
	2368	set imgY [expr $y - 2 * ($lineht + 2)]
	2369
	2370	if { [info exists _fields($_title)] } {
[2744]	2371	foreach { title units } $_fields($_title) break
	2372	if { $units != "" } {
	2373	set title [format "%s (%s)" $title $units]
	2374	}
[2718]	2375	} else {
[2744]	2376	set title $_title
[2718]	2377	}
	2378	# Make a swatch of the selected color
	2379	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
[2744]	2380	#puts stderr "out of range: $imgY"
	2381	return
[2718]	2382	}
	2383	if { ![info exists _image(swatch)] } {
[2744]	2384	set _image(swatch) [image create photo -width 24 -height 24]
[2718]	2385	}
	2386	set color [eval format "\#%02x%02x%02x" $pixel]
	2387	$_image(swatch) put black -to 0 0 23 23
	2388	$_image(swatch) put $color -to 1 1 22 22
	2389	.rappturetooltip configure -icon $_image(swatch)
	2390
	2391	# Compute the value of the point
	2392	if { [info exists _limits(vmax)] && [info exists _limits(vmin)] } {
[2744]	2393	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
	2394	set value [expr $t * ($_limits(vmax) - $_limits(vmin)) + $_limits(vmin)]
[2718]	2395	} else {
[2744]	2396	set value 0.0
[2718]	2397	}
	2398	set tipx [expr $x + 15]
	2399	set tipy [expr $y - 5]
	2400	Rappture::Tooltip::text $c "$title $value"
	2401	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
	2402	}
	2403
	2404
	2405	# ----------------------------------------------------------------------
	2406	# USAGE: Slice move x\|y\|z <newval>
	2407	#
	2408	# Called automatically when the user drags the slider to move the
	2409	# cut plane that slices 3D data. Gets the current value from the
	2410	# slider and moves the cut plane to the appropriate point in the
	2411	# data set.
	2412	# ----------------------------------------------------------------------
	2413	itcl::body Rappture::VtkVolumeViewer::Slice {option args} {
	2414	switch -- $option {
	2415	"move" {
	2416	set axis [lindex $args 0]
	2417	set oldval $_settings(axis-${axis}position)
	2418	set newval [lindex $args 1]
	2419	if {[llength $args] != 2} {
	2420	error "wrong # args: should be \"Slice move x\|y\|z newval\""
	2421	}
	2422	set newpos [expr {0.01*$newval}]
	2423	SendCmd "cutplane slice $axis $newpos"
	2424	}
[2744]	2425	"tooltip" {
	2426	set axis [lindex $args 0]
	2427	set val [$itk_component(${axis}CutScale) get]
	2428	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
	2429	}
[2718]	2430	default {
	2431	error "bad option \"$option\": should be axis, move, or tooltip"
	2432	}
	2433	}
	2434	}
	2435
	2436
	2437	# ----------------------------------------------------------------------
	2438	# USAGE: _dropdown post
	2439	# USAGE: _dropdown unpost
	2440	# USAGE: _dropdown select
	2441	#
	2442	# Used internally to handle the dropdown list for this combobox. The
	2443	# post/unpost options are invoked when the list is posted or unposted
	2444	# to manage the relief of the controlling button. The select option
	2445	# is invoked whenever there is a selection from the list, to assign
	2446	# the value back to the gauge.
	2447	# ----------------------------------------------------------------------
	2448	itcl::body Rappture::VtkVolumeViewer::Combo {option} {
	2449	set c $itk_component(view)
	2450	switch -- $option {
	2451	post {
[2744]	2452	foreach { x1 y1 x2 y2 } [$c bbox title] break
	2453	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
	2454	set x [expr $x1 + [winfo rootx $itk_component(view)]]
	2455	set y [expr $y2 + [winfo rooty $itk_component(view)]]
	2456	puts stderr "combo x=$x y=$y"
	2457	tk_popup $itk_component(fieldmenu) $x $y
[2718]	2458	}
	2459	activate {
[2744]	2460	$c itemconfigure title -fill red
[2718]	2461	}
	2462	deactivate {
[2744]	2463	$c itemconfigure title -fill white
[2718]	2464	}
[2744]	2465	invoke {
	2466	$itk_component(field) value $_currentField
	2467	AdjustSetting volume-field
	2468	}
[2718]	2469	default {
	2470	error "bad option \"$option\": should be post, unpost, select"
	2471	}
	2472	}
	2473	}
[2728]	2474

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