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source: branches/1.3/gui/scripts/vtkisosurfaceviewer.tcl @ 4470

Last change on this file since 4470 was 4470, checked in by ldelgass, 10 years ago
remove debugging print
File size: 88.5 KB

Rev	Line
[3330]	1	# -- mode: tcl; indent-tabs-mode: nil --
	2	# ----------------------------------------------------------------------
[4351]	3	# COMPONENT: vtkisosurfaceviewer - Vtk 3D contour object viewer
[3330]	4	#
	5	# It connects to the Vtk server running on a rendering farm,
	6	# transmits data, and displays the results.
	7	# ======================================================================
	8	# AUTHOR: Michael McLennan, Purdue University
	9	# Copyright (c) 2004-2005 Purdue Research Foundation
	10	#
	11	# See the file "license.terms" for information on usage and
	12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	13	# ======================================================================
	14	package require Itk
	15	package require BLT
	16	#package require Img
	17
	18	option add *VtkIsosurfaceViewer.width 4i widgetDefault
	19	option add VtkIsosurfaceViewercursor crosshair widgetDefault
	20	option add *VtkIsosurfaceViewer.height 4i widgetDefault
	21	option add *VtkIsosurfaceViewer.foreground black widgetDefault
	22	option add *VtkIsosurfaceViewer.controlBackground gray widgetDefault
	23	option add *VtkIsosurfaceViewer.controlDarkBackground #999999 widgetDefault
	24	option add *VtkIsosurfaceViewer.plotBackground black widgetDefault
	25	option add *VtkIsosurfaceViewer.plotForeground white widgetDefault
	26	option add *VtkIsosurfaceViewer.font \
	27	--helvetica-medium-r-normal--12-* widgetDefault
	28
	29	# must use this name -- plugs into Rappture::resources::load
	30	proc VtkIsosurfaceViewer_init_resources {} {
	31	Rappture::resources::register \
	32	vtkvis_server Rappture::VtkIsosurfaceViewer::SetServerList
	33	}
	34
	35	itcl::class Rappture::VtkIsosurfaceViewer {
	36	inherit Rappture::VisViewer
	37
	38	itk_option define -plotforeground plotForeground Foreground ""
	39	itk_option define -plotbackground plotBackground Background ""
	40
	41	constructor { hostlist args } {
	42	Rappture::VisViewer::constructor $hostlist
	43	} {
	44	# defined below
	45	}
	46	destructor {
	47	# defined below
	48	}
	49	public proc SetServerList { namelist } {
	50	Rappture::VisViewer::SetServerList "vtkvis" $namelist
	51	}
	52	public method add {dataobj {settings ""}}
	53	public method camera {option args}
	54	public method delete {args}
	55	public method disconnect {}
	56	public method download {option args}
	57	public method get {args}
	58	public method isconnected {}
	59	public method limits { colormap }
	60	public method parameters {title args} {
	61	# do nothing
	62	}
	63	public method scale {args}
	64
	65	protected method Connect {}
	66	protected method CurrentDatasets {args}
	67	protected method Disconnect {}
	68	protected method DoResize {}
	69	protected method DoRotate {}
[4426]	70	protected method DoChangeContourLevels {}
[3330]	71	protected method AdjustSetting {what {value ""}}
	72	protected method InitSettings { args }
	73	protected method Pan {option x y}
	74	protected method Pick {x y}
	75	protected method Rebuild {}
	76	protected method ReceiveDataset { args }
	77	protected method ReceiveImage { args }
	78	protected method ReceiveLegend { colormap title vmin vmax size }
	79	protected method Rotate {option x y}
	80	protected method Zoom {option}
	81
	82	# The following methods are only used by this class.
	83	private method BuildAxisTab {}
	84	private method BuildCameraTab {}
[3514]	85	private method BuildColormap { name }
[3330]	86	private method BuildCutplaneTab {}
	87	private method BuildDownloadPopup { widget command }
	88	private method BuildIsosurfaceTab {}
[3879]	89	private method Combo { option }
[3442]	90	private method DrawLegend {}
[3330]	91	private method EnterLegend { x y }
	92	private method EventuallyResize { w h }
[4426]	93	private method EventuallyChangeContourLevels {}
[3330]	94	private method EventuallyRotate { q }
	95	private method EventuallyRequestLegend {}
	96	private method EventuallySetCutplane { axis args }
	97	private method GetImage { args }
	98	private method GetVtkData { args }
	99	private method IsValidObject { dataobj }
	100	private method LeaveLegend {}
	101	private method MotionLegend { x y }
	102	private method PanCamera {}
	103	private method RequestLegend {}
	104	private method SetLegendTip { x y }
	105	private method SetObjectStyle { dataobj comp }
	106	private method Slice {option args}
[3514]	107	private method SetCurrentColormap { color }
[3517]	108	private method SetOrientation { side }
[4426]	109	private method GenerateContourList {}
[3330]	110
	111	private variable _arcball ""
	112
	113	private variable _dlist "" ; # list of data objects
	114	private variable _obj2datasets
	115	private variable _obj2ovride ; # maps dataobj => style override
	116	private variable _datasets ; # contains all the dataobj-component
	117	; # datasets in the server
	118	private variable _colormaps ; # contains all the colormaps
	119	; # in the server.
	120	# The name of the current colormap used. The colormap is global to all
	121	# heightmaps displayed.
[3623]	122	private variable _currentColormap ""
	123	private variable _currentNumContours -1
[3330]	124
	125	private variable _dataset2style ;# maps dataobj-component to transfunc
	126
	127	private variable _click ; # info used for rotate operations
	128	private variable _limits ; # autoscale min/max for all axes
	129	private variable _view ; # view params for 3D view
	130	private variable _settings
	131	private variable _style; # Array of current component styles.
[3514]	132	private variable _changed
[3330]	133	private variable _initialStyle; # Array of initial component styles.
	134	private variable _reset 1; # indicates if camera needs to be reset
	135	# to starting position.
	136
	137	private variable _first "" ; # This is the topmost dataset.
	138	private variable _start 0
	139	private variable _title ""
[3442]	140	private variable _isolines
[4426]	141	private variable _contourList
[4428]	142	private variable _currentLimits ""
[3330]	143	common _downloadPopup; # download options from popup
	144	private common _hardcopy
	145	private variable _width 0
	146	private variable _height 0
	147	private variable _resizePending 0
	148	private variable _rotatePending 0
	149	private variable _cutplanePending 0
	150	private variable _legendPending 0
	151	private variable _field ""
[4186]	152	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
[3330]	153	private variable _fieldNames {}
	154	private variable _fields
[3409]	155	private variable _curFldName ""
	156	private variable _curFldLabel ""
[3330]	157	}
	158
	159	itk::usual VtkIsosurfaceViewer {
	160	keep -background -foreground -cursor -font
	161	keep -plotbackground -plotforeground
	162	}
	163
	164	# ----------------------------------------------------------------------
	165	# CONSTRUCTOR
	166	# ----------------------------------------------------------------------
	167	itcl::body Rappture::VtkIsosurfaceViewer::constructor {hostlist args} {
	168	package require vtk
	169	set _serverType "vtkvis"
	170
	171	# Rebuild event
	172	$_dispatcher register !rebuild
	173	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
	174
	175	# Resize event
	176	$_dispatcher register !resize
	177	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
	178
	179	# Rotate event
	180	$_dispatcher register !rotate
	181	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
	182
	183	# Legend event
	184	$_dispatcher register !legend
	185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
	186
[4426]	187	# Contour levels event
	188	$_dispatcher register !contours
	189	$_dispatcher dispatch $this !contours \
	190	"[itcl::code $this DoChangeContourLevels]; list"
	191
[3330]	192	# X-Cutplane event
	193	$_dispatcher register !xcutplane
	194	$_dispatcher dispatch $this !xcutplane \
[4201]	195	"[itcl::code $this AdjustSetting -xcutplaneposition]; list"
[3330]	196
	197	# Y-Cutplane event
	198	$_dispatcher register !ycutplane
	199	$_dispatcher dispatch $this !ycutplane \
[4201]	200	"[itcl::code $this AdjustSetting -ycutplaneposition]; list"
[3330]	201
	202	# Z-Cutplane event
	203	$_dispatcher register !zcutplane
	204	$_dispatcher dispatch $this !zcutplane \
[4201]	205	"[itcl::code $this AdjustSetting -zcutplaneposition]; list"
[3330]	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]
	213
	214	# Initialize the view to some default parameters.
	215	array set _view {
	216	qw 0.853553
	217	qx -0.353553
	218	qy 0.353553
	219	qz 0.146447
	220	zoom 1.0
	221	xpan 0
	222	ypan 0
	223	ortho 0
	224	}
	225	set _arcball [blt::arcball create 100 100]
	226	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	227	$_arcball quaternion $q
	228
[4426]	229	array set _contourList {
	230	numLevels 10
	231	reqValues ""
	232	updatePending 0
	233	values ""
	234	}
[4201]	235	array set _settings {
[4351]	236	-axesvisible 1
	237	-axislabelsvisible 1
[4201]	238	-background black
	239	-colormap BCGYR
	240	-colormapvisible 1
	241	-cutplaneedges 0
	242	-cutplanelighting 1
	243	-cutplaneopacity 100
	244	-cutplanepreinterp 1
	245	-cutplanesvisible 0
	246	-cutplanewireframe 0
[4351]	247	-field "Default"
	248	-isolinecolor white
[4201]	249	-isosurfaceedges 0
	250	-isosurfacelighting 1
	251	-isosurfaceopacity 60
	252	-isosurfacevisible 1
	253	-isosurfacewireframe 0
	254	-legendvisible 1
	255	-numcontours 10
[4429]	256	-outline 0
[4201]	257	-xcutplaneposition 50
	258	-xcutplanevisible 1
[4429]	259	-xgrid 0
[4201]	260	-ycutplaneposition 50
	261	-ycutplanevisible 1
[4429]	262	-ygrid 0
[4201]	263	-zcutplaneposition 50
	264	-zcutplanevisible 1
[4429]	265	-zgrid 0
[4201]	266	}
[3514]	267	array set _changed {
[4201]	268	-isosurfaceopacity 0
	269	-colormap 0
	270	-numcontours 0
[3514]	271	}
[3330]	272
	273	itk_component add view {
	274	canvas $itk_component(plotarea).view \
	275	-highlightthickness 0 -borderwidth 0
	276	} {
	277	usual
	278	ignore -highlightthickness -borderwidth -background
	279	}
	280
	281	itk_component add fieldmenu {
	282	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
[4201]	283	-tearoff 0
[3330]	284	} {
	285	usual
	286	ignore -background -foreground -relief -tearoff
	287	}
	288	set c $itk_component(view)
	289	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
	290	bind $c <4> [itcl::code $this Zoom in 0.25]
	291	bind $c <5> [itcl::code $this Zoom out 0.25]
	292	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
	293	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
	294	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
	295	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
	296	bind $c <Enter> "focus %W"
	297	bind $c <Control-F1> [itcl::code $this ToggleConsole]
	298
	299	# Fix the scrollregion in case we go off screen
	300	$c configure -scrollregion [$c bbox all]
	301
	302	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
	303	set _map(cwidth) -1
	304	set _map(cheight) -1
	305	set _map(zoom) 1.0
	306	set _map(original) ""
	307
	308	set f [$itk_component(main) component controls]
	309	itk_component add reset {
	310	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
	311	-highlightthickness 0 \
	312	-image [Rappture::icon reset-view] \
	313	-command [itcl::code $this Zoom reset]
	314	} {
	315	usual
	316	ignore -highlightthickness
	317	}
	318	pack $itk_component(reset) -side top -padx 2 -pady 2
[3523]	319	Rappture::Tooltip::for $itk_component(reset) \
	320	"Reset the view to the default zoom level"
[3330]	321
	322	itk_component add zoomin {
	323	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
	324	-highlightthickness 0 \
	325	-image [Rappture::icon zoom-in] \
	326	-command [itcl::code $this Zoom in]
	327	} {
	328	usual
	329	ignore -highlightthickness
	330	}
	331	pack $itk_component(zoomin) -side top -padx 2 -pady 2
	332	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
	333
	334	itk_component add zoomout {
	335	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
	336	-highlightthickness 0 \
	337	-image [Rappture::icon zoom-out] \
	338	-command [itcl::code $this Zoom out]
	339	} {
	340	usual
	341	ignore -highlightthickness
	342	}
	343	pack $itk_component(zoomout) -side top -padx 2 -pady 2
	344	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
	345
	346	itk_component add contour {
	347	Rappture::PushButton $f.contour \
	348	-onimage [Rappture::icon volume-on] \
	349	-offimage [Rappture::icon volume-off] \
[4201]	350	-variable [itcl::scope _settings(-isosurfacevisible)] \
	351	-command [itcl::code $this AdjustSetting -isosurfacevisible]
[3330]	352	}
	353	$itk_component(contour) select
	354	Rappture::Tooltip::for $itk_component(contour) \
[4431]	355	"Hide the isosurface"
[3330]	356	pack $itk_component(contour) -padx 2 -pady 2
	357
	358	itk_component add cutplane {
	359	Rappture::PushButton $f.cutplane \
	360	-onimage [Rappture::icon cutbutton] \
	361	-offimage [Rappture::icon cutbutton] \
[4201]	362	-variable [itcl::scope _settings(-cutplanesvisible)] \
	363	-command [itcl::code $this AdjustSetting -cutplanesvisible]
[3330]	364	}
	365	Rappture::Tooltip::for $itk_component(cutplane) \
[4431]	366	"Show the cutplanes"
[3330]	367	pack $itk_component(cutplane) -padx 2 -pady 2
	368
[4351]	369
[3330]	370	if { [catch {
	371	BuildIsosurfaceTab
	372	BuildCutplaneTab
	373	BuildAxisTab
	374	BuildCameraTab
	375	} errs] != 0 } {
	376	puts stderr errs=$errs
	377	}
	378	# Legend
	379
	380	set _image(legend) [image create photo]
	381	itk_component add legend {
	382	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
	383	} {
	384	usual
	385	ignore -highlightthickness
	386	rename -background -plotbackground plotBackground Background
	387	}
	388
	389	# Hack around the Tk panewindow. The problem is that the requested
	390	# size of the 3d view isn't set until an image is retrieved from
	391	# the server. So the panewindow uses the tiny size.
	392	set w 10000
	393	pack forget $itk_component(view)
	394	blt::table $itk_component(plotarea) \
	395	0,0 $itk_component(view) -fill both -reqwidth $w
	396	blt::table configure $itk_component(plotarea) c1 -resize none
	397
	398	# Bindings for rotation via mouse
	399	bind $itk_component(view) <ButtonPress-1> \
	400	[itcl::code $this Rotate click %x %y]
	401	bind $itk_component(view) <B1-Motion> \
	402	[itcl::code $this Rotate drag %x %y]
	403	bind $itk_component(view) <ButtonRelease-1> \
	404	[itcl::code $this Rotate release %x %y]
	405
	406	# Bindings for panning via mouse
	407	bind $itk_component(view) <ButtonPress-2> \
	408	[itcl::code $this Pan click %x %y]
	409	bind $itk_component(view) <B2-Motion> \
	410	[itcl::code $this Pan drag %x %y]
	411	bind $itk_component(view) <ButtonRelease-2> \
	412	[itcl::code $this Pan release %x %y]
	413
[3443]	414	#bind $itk_component(view) <ButtonRelease-3> \
	415	# [itcl::code $this Pick %x %y]
[3330]	416
	417	# Bindings for panning via keyboard
	418	bind $itk_component(view) <KeyPress-Left> \
	419	[itcl::code $this Pan set -10 0]
	420	bind $itk_component(view) <KeyPress-Right> \
	421	[itcl::code $this Pan set 10 0]
	422	bind $itk_component(view) <KeyPress-Up> \
	423	[itcl::code $this Pan set 0 -10]
	424	bind $itk_component(view) <KeyPress-Down> \
	425	[itcl::code $this Pan set 0 10]
	426	bind $itk_component(view) <Shift-KeyPress-Left> \
	427	[itcl::code $this Pan set -2 0]
	428	bind $itk_component(view) <Shift-KeyPress-Right> \
	429	[itcl::code $this Pan set 2 0]
	430	bind $itk_component(view) <Shift-KeyPress-Up> \
	431	[itcl::code $this Pan set 0 -2]
	432	bind $itk_component(view) <Shift-KeyPress-Down> \
	433	[itcl::code $this Pan set 0 2]
	434
	435	# Bindings for zoom via keyboard
	436	bind $itk_component(view) <KeyPress-Prior> \
	437	[itcl::code $this Zoom out]
	438	bind $itk_component(view) <KeyPress-Next> \
	439	[itcl::code $this Zoom in]
	440
	441	bind $itk_component(view) <Enter> "focus $itk_component(view)"
	442
	443	if {[string equal "x11" [tk windowingsystem]]} {
	444	# Bindings for zoom via mouse
	445	bind $itk_component(view) <4> [itcl::code $this Zoom out]
	446	bind $itk_component(view) <5> [itcl::code $this Zoom in]
	447	}
	448
	449	set _image(download) [image create photo]
	450
	451	eval itk_initialize $args
[4186]	452
	453	EnableWaitDialog 500
[3330]	454	Connect
	455	}
	456
	457	# ----------------------------------------------------------------------
	458	# DESTRUCTOR
	459	# ----------------------------------------------------------------------
	460	itcl::body Rappture::VtkIsosurfaceViewer::destructor {} {
	461	Disconnect
	462	image delete $_image(plot)
	463	image delete $_image(download)
	464	catch { blt::arcball destroy $_arcball }
	465	}
	466
	467	itcl::body Rappture::VtkIsosurfaceViewer::DoResize {} {
	468	if { $_width < 2 } {
	469	set _width 500
	470	}
	471	if { $_height < 2 } {
	472	set _height 500
	473	}
	474	set _start [clock clicks -milliseconds]
	475	SendCmd "screen size $_width $_height"
	476
	477	EventuallyRequestLegend
	478	set _resizePending 0
	479	}
	480
[4426]	481	itcl::body Rappture::VtkIsosurfaceViewer::DoChangeContourLevels {} {
	482	GenerateContourList
	483	SendCmd [list contour3d contourlist $_contourList(values)]
	484	#SendCmd [list camera reset]
	485	DrawLegend
	486	set _contourList(updatePending) 0
	487	}
	488
[3330]	489	itcl::body Rappture::VtkIsosurfaceViewer::DoRotate {} {
	490	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	491	SendCmd "camera orient $q"
	492	set _rotatePending 0
	493	}
	494
	495	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRequestLegend {} {
	496	if { !$_legendPending } {
	497	set _legendPending 1
	498	$_dispatcher event -idle !legend
	499	}
	500	}
	501
	502	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyResize { w h } {
	503	set _width $w
	504	set _height $h
	505	$_arcball resize $w $h
	506	if { !$_resizePending } {
	507	set _resizePending 1
	508	$_dispatcher event -after 400 !resize
	509	}
	510	}
	511
	512	set rotate_delay 100
	513
	514	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyRotate { q } {
	515	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
	516	if { !$_rotatePending } {
	517	set _rotatePending 1
	518	global rotate_delay
	519	$_dispatcher event -after $rotate_delay !rotate
	520	}
	521	}
	522
	523	itcl::body Rappture::VtkIsosurfaceViewer::EventuallySetCutplane { axis args } {
	524	if { !$_cutplanePending } {
	525	set _cutplanePending 1
	526	$_dispatcher event -after 100 !${axis}cutplane
	527	}
	528	}
	529
[4426]	530	itcl::body Rappture::VtkIsosurfaceViewer::EventuallyChangeContourLevels {} {
	531	set n $_contourList(numLevels)
	532	set _contourList(values) ""
	533	if { !$_contourList(updatePending) } {
	534	set _contourList(updatePending) 1
	535	global rotate_delay
	536	$_dispatcher event -after $rotate_delay !contours
	537	}
	538	}
	539
[3330]	540	# ----------------------------------------------------------------------
	541	# USAGE: add <dataobj> ?<settings>?
	542	#
	543	# Clients use this to add a data object to the plot. The optional
	544	# <settings> are used to configure the plot. Allowed settings are
	545	# -color, -brightness, -width, -linestyle, and -raise.
	546	# ----------------------------------------------------------------------
	547	itcl::body Rappture::VtkIsosurfaceViewer::add {dataobj {settings ""}} {
[3571]	548	if { ![$dataobj isvalid] } {
	549	return; # Object doesn't contain valid data.
	550	}
[3330]	551	array set params {
	552	-color auto
	553	-width 1
	554	-linestyle solid
	555	-brightness 0
	556	-raise 0
	557	-description ""
	558	-param ""
	559	-type ""
	560	}
	561	array set params $settings
	562	set params(-description) ""
	563	set params(-param) ""
[3800]	564	array set params $settings
	565
[3330]	566	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
	567	# can't handle -autocolors yet
	568	set params(-color) black
	569	}
[3844]	570	set pos [lsearch -exact $_dlist $dataobj]
[3330]	571	if {$pos < 0} {
	572	lappend _dlist $dataobj
	573	}
	574	set _obj2ovride($dataobj-color) $params(-color)
	575	set _obj2ovride($dataobj-width) $params(-width)
	576	set _obj2ovride($dataobj-raise) $params(-raise)
	577	$_dispatcher event -idle !rebuild
	578	}
	579
	580
	581	# ----------------------------------------------------------------------
	582	# USAGE: delete ?<dataobj1> <dataobj2> ...?
	583	#
	584	# Clients use this to delete a dataobj from the plot. If no dataobjs
	585	# are specified, then all dataobjs are deleted. No data objects are
	586	# deleted. They are only removed from the display list.
	587	#
	588	# ----------------------------------------------------------------------
	589	itcl::body Rappture::VtkIsosurfaceViewer::delete {args} {
	590	if { [llength $args] == 0} {
	591	set args $_dlist
	592	}
	593	# Delete all specified dataobjs
	594	set changed 0
	595	foreach dataobj $args {
	596	set pos [lsearch -exact $_dlist $dataobj]
	597	if { $pos < 0 } {
	598	continue; # Don't know anything about it.
	599	}
	600	# Remove it from the dataobj list.
	601	set _dlist [lreplace $_dlist $pos $pos]
	602	array unset _obj2ovride $dataobj-*
	603	array unset _settings $dataobj-*
	604	set changed 1
	605	}
	606	# If anything changed, then rebuild the plot
	607	if { $changed } {
	608	$_dispatcher event -idle !rebuild
	609	}
	610	}
	611
	612	# ----------------------------------------------------------------------
	613	# USAGE: get ?-objects?
	614	# USAGE: get ?-visible?
	615	# USAGE: get ?-image view?
	616	#
	617	# Clients use this to query the list of objects being plotted, in
	618	# order from bottom to top of this result. The optional "-image"
	619	# flag can also request the internal images being shown.
	620	# ----------------------------------------------------------------------
	621	itcl::body Rappture::VtkIsosurfaceViewer::get {args} {
	622	if {[llength $args] == 0} {
	623	set args "-objects"
	624	}
	625
	626	set op [lindex $args 0]
	627	switch -- $op {
	628	"-objects" {
	629	# put the dataobj list in order according to -raise options
	630	set dlist {}
	631	foreach dataobj $_dlist {
	632	if { ![IsValidObject $dataobj] } {
	633	continue
	634	}
	635	if {[info exists _obj2ovride($dataobj-raise)] &&
	636	$_obj2ovride($dataobj-raise)} {
	637	set dlist [linsert $dlist 0 $dataobj]
	638	} else {
	639	lappend dlist $dataobj
	640	}
	641	}
	642	return $dlist
	643	}
	644	"-visible" {
	645	set dlist {}
	646	foreach dataobj $_dlist {
	647	if { ![IsValidObject $dataobj] } {
	648	continue
	649	}
	650	if { ![info exists _obj2ovride($dataobj-raise)] } {
	651	# No setting indicates that the object isn't visible.
	652	continue
	653	}
	654	# Otherwise use the -raise parameter to put the object to
	655	# the front of the list.
	656	if { $_obj2ovride($dataobj-raise) } {
	657	set dlist [linsert $dlist 0 $dataobj]
	658	} else {
	659	lappend dlist $dataobj
	660	}
	661	}
	662	return $dlist
	663	}
	664	-image {
	665	if {[llength $args] != 2} {
	666	error "wrong # args: should be \"get -image view\""
	667	}
	668	switch -- [lindex $args end] {
	669	view {
	670	return $_image(plot)
	671	}
	672	default {
	673	error "bad image name \"[lindex $args end]\": should be view"
	674	}
	675	}
	676	}
	677	default {
	678	error "bad option \"$op\": should be -objects or -image"
	679	}
	680	}
	681	}
	682
	683	# ----------------------------------------------------------------------
	684	# USAGE: scale ?<data1> <data2> ...?
	685	#
	686	# Sets the default limits for the overall plot according to the
	687	# limits of the data for all of the given <data> objects. This
	688	# accounts for all objects--even those not showing on the screen.
	689	# Because of this, the limits are appropriate for all objects as
	690	# the user scans through data in the ResultSet viewer.
	691	# ----------------------------------------------------------------------
	692	itcl::body Rappture::VtkIsosurfaceViewer::scale { args } {
	693	foreach dataobj $args {
[3571]	694	if { ![$dataobj isvalid] } {
	695	continue; # Object doesn't contain valid data.
	696	}
[3440]	697	foreach axis { x y z } {
	698	set lim [$dataobj limits $axis]
	699	if { ![info exists _limits($axis)] } {
	700	set _limits($axis) $lim
	701	continue
	702	}
	703	foreach {min max} $lim break
	704	foreach {amin amax} $_limits($axis) break
	705	if { $amin > $min } {
	706	set amin $min
	707	}
	708	if { $amax < $max } {
	709	set amax $max
	710	}
	711	set _limits($axis) [list $amin $amax]
[3330]	712	}
[3440]	713	foreach { fname lim } [$dataobj fieldlimits] {
	714	if { ![info exists _limits($fname)] } {
	715	set _limits($fname) $lim
	716	continue
	717	}
	718	foreach {min max} $lim break
	719	foreach {fmin fmax} $_limits($fname) break
	720	if { $fmin > $min } {
	721	set fmin $min
	722	}
	723	if { $fmax < $max } {
	724	set fmax $max
	725	}
	726	set _limits($fname) [list $fmin $fmax]
	727	}
[3330]	728	}
	729	}
	730
	731	# ----------------------------------------------------------------------
	732	# USAGE: download coming
	733	# USAGE: download controls <downloadCommand>
	734	# USAGE: download now
	735	#
	736	# Clients use this method to create a downloadable representation
	737	# of the plot. Returns a list of the form {ext string}, where
	738	# "ext" is the file extension (indicating the type of data) and
	739	# "string" is the data itself.
	740	# ----------------------------------------------------------------------
	741	itcl::body Rappture::VtkIsosurfaceViewer::download {option args} {
	742	switch $option {
	743	coming {
	744	if {[catch {
	745	blt::winop snap $itk_component(plotarea) $_image(download)
	746	}]} {
	747	$_image(download) configure -width 1 -height 1
	748	$_image(download) put #000000
	749	}
	750	}
	751	controls {
	752	set popup .vtkviewerdownload
	753	if { ![winfo exists .vtkviewerdownload] } {
	754	set inner [BuildDownloadPopup $popup [lindex $args 0]]
	755	} else {
	756	set inner [$popup component inner]
	757	}
	758	set _downloadPopup(image_controls) $inner.image_frame
	759	set num [llength [get]]
	760	set num [expr {($num == 1) ? "1 result" : "$num results"}]
	761	set word [Rappture::filexfer::label downloadWord]
	762	$inner.summary configure -text "$word $num in the following format:"
	763	update idletasks ;# Fix initial sizes
	764	return $popup
	765	}
	766	now {
	767	set popup .vtkviewerdownload
	768	if {[winfo exists .vtkviewerdownload]} {
	769	$popup deactivate
	770	}
	771	switch -- $_downloadPopup(format) {
	772	"image" {
	773	return [$this GetImage [lindex $args 0]]
	774	}
	775	"vtk" {
	776	return [$this GetVtkData [lindex $args 0]]
	777	}
	778	}
	779	return ""
	780	}
	781	default {
	782	error "bad option \"$option\": should be coming, controls, now"
	783	}
	784	}
	785	}
	786
	787	# ----------------------------------------------------------------------
	788	# USAGE: Connect ?<host:port>,<host:port>...?
	789	#
	790	# Clients use this method to establish a connection to a new
	791	# server, or to reestablish a connection to the previous server.
	792	# Any existing connection is automatically closed.
	793	# ----------------------------------------------------------------------
	794	itcl::body Rappture::VtkIsosurfaceViewer::Connect {} {
	795	set _hosts [GetServerList "vtkvis"]
	796	if { "" == $_hosts } {
	797	return 0
	798	}
	799	set result [VisViewer::Connect $_hosts]
	800	if { $result } {
[3592]	801	if { $_reportClientInfo } {
	802	# Tell the server the viewer, hub, user and session.
[4186]	803	# Do this immediately on connect before buffering any commands
[3592]	804	global env
	805
	806	set info {}
	807	set user "???"
	808	if { [info exists env(USER)] } {
	809	set user $env(USER)
	810	}
	811	set session "???"
	812	if { [info exists env(SESSION)] } {
	813	set session $env(SESSION)
	814	}
	815	lappend info "hub" [exec hostname]
	816	lappend info "client" "vtkisosurfaceviewer"
	817	lappend info "user" $user
	818	lappend info "session" $session
	819	SendCmd "clientinfo [list $info]"
	820	}
	821
[3330]	822	set w [winfo width $itk_component(view)]
	823	set h [winfo height $itk_component(view)]
	824	EventuallyResize $w $h
	825	}
	826	return $result
	827	}
	828
	829	#
	830	# isconnected --
	831	#
	832	# Indicates if we are currently connected to the visualization server.
	833	#
	834	itcl::body Rappture::VtkIsosurfaceViewer::isconnected {} {
	835	return [VisViewer::IsConnected]
	836	}
	837
	838	#
	839	# disconnect --
	840	#
	841	itcl::body Rappture::VtkIsosurfaceViewer::disconnect {} {
	842	Disconnect
	843	set _reset 1
	844	}
	845
	846	#
	847	# Disconnect --
	848	#
	849	# Clients use this method to disconnect from the current rendering
	850	# server.
	851	#
	852	itcl::body Rappture::VtkIsosurfaceViewer::Disconnect {} {
	853	VisViewer::Disconnect
	854
	855	$_dispatcher cancel !rebuild
	856	$_dispatcher cancel !resize
	857	$_dispatcher cancel !rotate
	858	$_dispatcher cancel !xcutplane
	859	$_dispatcher cancel !ycutplane
	860	$_dispatcher cancel !zcutplane
	861	$_dispatcher cancel !legend
	862	# disconnected -- no more data sitting on server
	863	set _outbuf ""
	864	array unset _datasets
	865	array unset _data
	866	array unset _colormaps
	867	array unset _seeds
	868	array unset _dataset2style
	869	array unset _obj2datasets
	870	}
	871
	872	# ----------------------------------------------------------------------
	873	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
	874	#
	875	# Invoked automatically whenever the "image" command comes in from
	876	# the rendering server. Indicates that binary image data with the
	877	# specified <size> will follow.
	878	# ----------------------------------------------------------------------
	879	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveImage { args } {
	880	array set info {
	881	-token "???"
	882	-bytes 0
	883	-type image
	884	}
	885	array set info $args
	886	set bytes [ReceiveBytes $info(-bytes)]
	887	if { $info(-type) == "image" } {
	888	if 0 {
	889	set f [open "last.ppm" "w"]
	890	puts $f $bytes
	891	close $f
	892	}
	893	$_image(plot) configure -data $bytes
[4201]	894	#set time [clock seconds]
	895	#set date [clock format $time]
	896	#set w [image width $_image(plot)]
	897	#set h [image height $_image(plot)]
	898	#puts stderr "$date: received image ${w}x${h} image"
[3330]	899	if { $_start > 0 } {
	900	set finish [clock clicks -milliseconds]
	901	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
	902	set _start 0
	903	}
	904	} elseif { $info(type) == "print" } {
	905	set tag $this-print-$info(-token)
	906	set _hardcopy($tag) $bytes
	907	}
	908	}
	909
	910	#
	911	# ReceiveDataset --
	912	#
	913	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveDataset { args } {
	914	if { ![isconnected] } {
	915	return
	916	}
	917	set option [lindex $args 0]
	918	switch -- $option {
	919	"scalar" {
	920	set option [lindex $args 1]
	921	switch -- $option {
	922	"world" {
	923	foreach { x y z value tag } [lrange $args 2 end] break
	924	}
	925	"pixel" {
	926	foreach { x y value tag } [lrange $args 2 end] break
	927	}
	928	}
	929	}
	930	"vector" {
	931	set option [lindex $args 1]
	932	switch -- $option {
	933	"world" {
	934	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
	935	}
	936	"pixel" {
	937	foreach { x y vx vy vz tag } [lrange $args 2 end] break
	938	}
	939	}
	940	}
	941	"names" {
	942	foreach { name } [lindex $args 1] {
	943	#puts stderr "Dataset: $name"
	944	}
	945	}
	946	default {
	947	error "unknown dataset option \"$option\" from server"
	948	}
	949	}
	950	}
	951
	952	# ----------------------------------------------------------------------
	953	# USAGE: Rebuild
	954	#
	955	# Called automatically whenever something changes that affects the
	956	# data in the widget. Clears any existing data and rebuilds the
	957	# widget to display new data.
	958	# ----------------------------------------------------------------------
	959	itcl::body Rappture::VtkIsosurfaceViewer::Rebuild {} {
	960	set w [winfo width $itk_component(view)]
	961	set h [winfo height $itk_component(view)]
	962	if { $w < 2 \|\| $h < 2 } {
[3530]	963	$_dispatcher event -idle !rebuild
[3330]	964	return
	965	}
	966
	967	# Turn on buffering of commands to the server. We don't want to
	968	# be preempted by a server disconnect/reconnect (which automatically
	969	# generates a new call to Rebuild).
[3421]	970	StartBufferingCommands
[3330]	971
[3392]	972	if { $_reset } {
	973	set _width $w
	974	set _height $h
	975	$_arcball resize $w $h
	976	DoResize
	977	#
	978	# Reset the camera and other view parameters
	979	#
	980	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	981	$_arcball quaternion $q
	982	if {$_view(ortho)} {
	983	SendCmd "camera mode ortho"
	984	} else {
	985	SendCmd "camera mode persp"
	986	}
	987	DoRotate
	988	PanCamera
	989	set _first ""
[4399]	990	InitSettings -xgrid -ygrid -zgrid -axismode \
[4201]	991	-axesvisible -axislabelsvisible
[3486]	992	foreach axis { x y z } {
	993	SendCmd "axis lformat $axis %g"
	994	}
[3514]	995	StopBufferingCommands
[3392]	996	SendCmd "imgflush"
[3514]	997	StartBufferingCommands
[3392]	998	}
[3330]	999	set _first ""
[4397]	1000	SendCmd "dataset visible 0"
[3330]	1001	foreach dataobj [get -objects] {
	1002	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
	1003	set _first $dataobj
	1004	}
	1005	set _obj2datasets($dataobj) ""
	1006	foreach comp [$dataobj components] {
	1007	set tag $dataobj-$comp
	1008	if { ![info exists _datasets($tag)] } {
	1009	set bytes [$dataobj vtkdata $comp]
	1010	if 0 {
	1011	set f [open "/tmp/isosurface.vtk" "w"]
	1012	puts $f $bytes
	1013	close $f
	1014	}
	1015	set length [string length $bytes]
[3421]	1016	if { $_reportClientInfo } {
[3392]	1017	set info {}
[3394]	1018	lappend info "tool_id" [$dataobj hints toolId]
	1019	lappend info "tool_name" [$dataobj hints toolName]
	1020	lappend info "tool_version" [$dataobj hints toolRevision]
	1021	lappend info "tool_title" [$dataobj hints toolTitle]
	1022	lappend info "dataset_label" [$dataobj hints label]
	1023	lappend info "dataset_size" $length
	1024	lappend info "dataset_tag" $tag
[3392]	1025	SendCmd "clientinfo [list $info]"
	1026	}
[3330]	1027	append _outbuf "dataset add $tag data follows $length\n"
	1028	append _outbuf $bytes
	1029	set _datasets($tag) 1
	1030	SetObjectStyle $dataobj $comp
	1031	}
	1032	lappend _obj2datasets($dataobj) $tag
	1033	if { [info exists _obj2ovride($dataobj-raise)] } {
[4351]	1034	SendCmd "contour3d visible 1 $tag"
[3330]	1035	}
	1036	}
	1037	}
[3514]	1038
[3409]	1039	if { $_first != "" } {
[3330]	1040	$itk_component(field) choices delete 0 end
	1041	$itk_component(fieldmenu) delete 0 end
	1042	array unset _fields
[3421]	1043	set _curFldName ""
[3409]	1044	foreach cname [$_first components] {
	1045	foreach fname [$_first fieldnames $cname] {
	1046	if { [info exists _fields($fname)] } {
	1047	continue
	1048	}
	1049	foreach { label units components } \
	1050	[$_first fieldinfo $fname] break
	1051	$itk_component(field) choices insert end "$fname" "$label"
	1052	$itk_component(fieldmenu) add radiobutton -label "$label" \
	1053	-value $label -variable [itcl::scope _curFldLabel] \
	1054	-selectcolor red \
	1055	-activebackground $itk_option(-plotbackground) \
	1056	-activeforeground $itk_option(-plotforeground) \
	1057	-font "Arial 8" \
	1058	-command [itcl::code $this Combo invoke]
	1059	set _fields($fname) [list $label $units $components]
[3421]	1060	if { $_curFldName == "" } {
	1061	set _curFldName $fname
	1062	set _curFldLabel $label
	1063	}
[3409]	1064	}
	1065	}
	1066	$itk_component(field) value $_curFldLabel
[4428]	1067
	1068	if { ![info exists _limits($_curFldName)] } {
	1069	SendCmd "dataset maprange all"
	1070	} else {
	1071	set limits $_limits($_curFldName)
	1072	SendCmd "dataset maprange explicit $limits $_curFldName"
	1073	if { $limits != $_currentLimits } {
	1074	set _currentLimits $limits
	1075	EventuallyChangeContourLevels
	1076	}
	1077	}
[3330]	1078	}
[4429]	1079	InitSettings -cutplanesvisible -isosurfacevisible -outline
[3330]	1080	if { $_reset } {
	1081	# These are settings that rely on a dataset being loaded.
	1082	InitSettings \
[4201]	1083	-isosurfacelighting \
	1084	-field \
	1085	-isosurfacevisible \
	1086	-isosurfaceedges -isosurfacelighting -isosurfaceopacity \
	1087	-isosurfacewireframe \
	1088	-cutplanesvisible \
	1089	-xcutplaneposition -ycutplaneposition -zcutplaneposition \
	1090	-xcutplanevisible -ycutplanevisible -zcutplanevisible \
	1091	-cutplanepreinterp -numcontours
[3514]	1092
[3330]	1093	Zoom reset
[3409]	1094	foreach axis { x y z } {
	1095	# Another problem fixed by a <view>. We looking into a data
	1096	# object for the name of the axes. This should be global to
	1097	# the viewer itself.
	1098	set label [$_first hints ${axis}label]
	1099	if { $label == "" } {
[3548]	1100	set label [string toupper $axis]
[3409]	1101	}
	1102	# May be a space in the axis label.
	1103	SendCmd [list axis name $axis $label]
	1104	}
[3514]	1105	if { [array size _fields] < 2 } {
	1106	blt::table forget $itk_component(field) $itk_component(field_l)
	1107	}
[3330]	1108	set _reset 0
	1109	}
[4391]	1110	# Redraw the legend even if we're using the same colormap. The position
	1111	# of the isolines may have changed because the range of data changed.
	1112	DrawLegend
[3330]	1113
	1114	# Actually write the commands to the server socket. If it fails, we don't
	1115	# care. We're finished here.
	1116	blt::busy hold $itk_component(hull)
[3421]	1117	StopBufferingCommands; # Turn off buffering and send commands.
[3330]	1118	blt::busy release $itk_component(hull)
	1119	}
	1120
	1121	# ----------------------------------------------------------------------
	1122	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
	1123	#
	1124	# Returns a list of server IDs for the current datasets being displayed. This
	1125	# is normally a single ID, but it might be a list of IDs if the current data
	1126	# object has multiple components.
	1127	# ----------------------------------------------------------------------
	1128	itcl::body Rappture::VtkIsosurfaceViewer::CurrentDatasets {args} {
	1129	set flag [lindex $args 0]
	1130	switch -- $flag {
	1131	"-all" {
	1132	if { [llength $args] > 1 } {
	1133	error "CurrentDatasets: can't specify dataobj after \"-all\""
	1134	}
	1135	set dlist [get -objects]
	1136	}
	1137	"-visible" {
	1138	if { [llength $args] > 1 } {
	1139	set dlist {}
	1140	set args [lrange $args 1 end]
	1141	foreach dataobj $args {
	1142	if { [info exists _obj2ovride($dataobj-raise)] } {
	1143	lappend dlist $dataobj
	1144	}
	1145	}
	1146	} else {
	1147	set dlist [get -visible]
	1148	}
	1149	}
	1150	default {
	1151	set dlist $args
	1152	}
	1153	}
	1154	set rlist ""
	1155	foreach dataobj $dlist {
	1156	foreach comp [$dataobj components] {
	1157	set tag $dataobj-$comp
	1158	if { [info exists _datasets($tag)] && $_datasets($tag) } {
	1159	lappend rlist $tag
	1160	}
	1161	}
	1162	}
	1163	return $rlist
	1164	}
	1165
	1166	# ----------------------------------------------------------------------
	1167	# USAGE: Zoom in
	1168	# USAGE: Zoom out
	1169	# USAGE: Zoom reset
	1170	#
	1171	# Called automatically when the user clicks on one of the zoom
	1172	# controls for this widget. Changes the zoom for the current view.
	1173	# ----------------------------------------------------------------------
	1174	itcl::body Rappture::VtkIsosurfaceViewer::Zoom {option} {
	1175	switch -- $option {
	1176	"in" {
	1177	set _view(zoom) [expr {$_view(zoom)*1.25}]
	1178	SendCmd "camera zoom $_view(zoom)"
	1179	}
	1180	"out" {
	1181	set _view(zoom) [expr {$_view(zoom)*0.8}]
	1182	SendCmd "camera zoom $_view(zoom)"
	1183	}
	1184	"reset" {
	1185	array set _view {
[3536]	1186	qw 0.853553
	1187	qx -0.353553
	1188	qy 0.353553
	1189	qz 0.146447
	1190	zoom 1.0
[3330]	1191	xpan 0
	1192	ypan 0
	1193	}
	1194	if { $_first != "" } {
	1195	set location [$_first hints camera]
	1196	if { $location != "" } {
	1197	array set _view $location
	1198	}
	1199	}
	1200	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1201	$_arcball quaternion $q
[3550]	1202	DoRotate
[3416]	1203	SendCmd "camera reset"
[3330]	1204	}
	1205	}
	1206	}
	1207
	1208	itcl::body Rappture::VtkIsosurfaceViewer::PanCamera {} {
	1209	set x $_view(xpan)
	1210	set y $_view(ypan)
	1211	SendCmd "camera pan $x $y"
	1212	}
	1213
	1214
	1215	# ----------------------------------------------------------------------
	1216	# USAGE: Rotate click <x> <y>
	1217	# USAGE: Rotate drag <x> <y>
	1218	# USAGE: Rotate release <x> <y>
	1219	#
	1220	# Called automatically when the user clicks/drags/releases in the
	1221	# plot area. Moves the plot according to the user's actions.
	1222	# ----------------------------------------------------------------------
	1223	itcl::body Rappture::VtkIsosurfaceViewer::Rotate {option x y} {
	1224	switch -- $option {
	1225	"click" {
	1226	$itk_component(view) configure -cursor fleur
	1227	set _click(x) $x
	1228	set _click(y) $y
	1229	}
	1230	"drag" {
	1231	if {[array size _click] == 0} {
	1232	Rotate click $x $y
	1233	} else {
	1234	set w [winfo width $itk_component(view)]
	1235	set h [winfo height $itk_component(view)]
	1236	if {$w <= 0 \|\| $h <= 0} {
	1237	return
	1238	}
	1239
	1240	if {[catch {
	1241	# this fails sometimes for no apparent reason
	1242	set dx [expr {double($x-$_click(x))/$w}]
	1243	set dy [expr {double($y-$_click(y))/$h}]
	1244	}]} {
	1245	return
	1246	}
	1247	if { $dx == 0 && $dy == 0 } {
	1248	return
	1249	}
	1250	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
	1251	EventuallyRotate $q
	1252	set _click(x) $x
	1253	set _click(y) $y
	1254	}
	1255	}
	1256	"release" {
	1257	Rotate drag $x $y
	1258	$itk_component(view) configure -cursor ""
	1259	catch {unset _click}
	1260	}
	1261	default {
	1262	error "bad option \"$option\": should be click, drag, release"
	1263	}
	1264	}
	1265	}
	1266
	1267	itcl::body Rappture::VtkIsosurfaceViewer::Pick {x y} {
	1268	foreach tag [CurrentDatasets -visible] {
	1269	SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
	1270	}
	1271	}
	1272
	1273	# ----------------------------------------------------------------------
	1274	# USAGE: $this Pan click x y
	1275	# $this Pan drag x y
	1276	# $this Pan release x y
	1277	#
	1278	# Called automatically when the user clicks on one of the zoom
	1279	# controls for this widget. Changes the zoom for the current view.
	1280	# ----------------------------------------------------------------------
	1281	itcl::body Rappture::VtkIsosurfaceViewer::Pan {option x y} {
	1282	switch -- $option {
	1283	"set" {
	1284	set w [winfo width $itk_component(view)]
	1285	set h [winfo height $itk_component(view)]
	1286	set x [expr $x / double($w)]
	1287	set y [expr $y / double($h)]
	1288	set _view(xpan) [expr $_view(xpan) + $x]
	1289	set _view(ypan) [expr $_view(ypan) + $y]
	1290	PanCamera
	1291	return
	1292	}
	1293	"click" {
	1294	set _click(x) $x
	1295	set _click(y) $y
	1296	$itk_component(view) configure -cursor hand1
	1297	}
	1298	"drag" {
	1299	if { ![info exists _click(x)] } {
	1300	set _click(x) $x
	1301	}
	1302	if { ![info exists _click(y)] } {
	1303	set _click(y) $y
	1304	}
	1305	set w [winfo width $itk_component(view)]
	1306	set h [winfo height $itk_component(view)]
	1307	set dx [expr ($_click(x) - $x)/double($w)]
	1308	set dy [expr ($_click(y) - $y)/double($h)]
	1309	set _click(x) $x
	1310	set _click(y) $y
	1311	set _view(xpan) [expr $_view(xpan) - $dx]
	1312	set _view(ypan) [expr $_view(ypan) - $dy]
	1313	PanCamera
	1314	}
	1315	"release" {
	1316	Pan drag $x $y
	1317	$itk_component(view) configure -cursor ""
	1318	}
	1319	default {
	1320	error "unknown option \"$option\": should set, click, drag, or release"
	1321	}
	1322	}
	1323	}
	1324
	1325	# ----------------------------------------------------------------------
	1326	# USAGE: InitSettings <what> ?<value>?
	1327	#
	1328	# Used internally to update rendering settings whenever parameters
	1329	# change in the popup settings panel. Sends the new settings off
	1330	# to the back end.
	1331	# ----------------------------------------------------------------------
	1332	itcl::body Rappture::VtkIsosurfaceViewer::InitSettings { args } {
	1333	foreach spec $args {
	1334	if { [info exists _settings($_first-$spec)] } {
	1335	# Reset global setting with dataobj specific setting
	1336	set _settings($spec) $_settings($_first-$spec)
	1337	}
	1338	AdjustSetting $spec
	1339	}
	1340	}
	1341
	1342	#
	1343	# AdjustSetting --
	1344	#
	1345	# Changes/updates a specific setting in the widget. There are
	1346	# usually user-setable option. Commands are sent to the render
	1347	# server.
	1348	#
	1349	itcl::body Rappture::VtkIsosurfaceViewer::AdjustSetting {what {value ""}} {
	1350	if { ![isconnected] } {
	1351	return
	1352	}
	1353	switch -- $what {
[4339]	1354	"-background" {
[3330]	1355	set bgcolor [$itk_component(background) value]
	1356	array set fgcolors {
	1357	"black" "white"
	1358	"white" "black"
	1359	"grey" "black"
	1360	}
	1361	configure -plotbackground $bgcolor \
	1362	-plotforeground $fgcolors($bgcolor)
	1363	$itk_component(view) delete "legend"
[3442]	1364	DrawLegend
[3330]	1365	}
[4201]	1366	"-axesvisible" {
	1367	set bool $_settings(-axesvisible)
[3330]	1368	SendCmd "axis visible all $bool"
	1369	}
[4201]	1370	"-axislabelsvisible" {
	1371	set bool $_settings(-axislabelsvisible)
[3330]	1372	SendCmd "axis labels all $bool"
	1373	}
[4399]	1374	"-xgrid" - "-ygrid" - "-zgrid" {
[4201]	1375	set axis [string tolower [string range $what 1 1]]
[3330]	1376	set bool $_settings($what)
	1377	SendCmd "axis grid $axis $bool"
	1378	}
[4201]	1379	"-axismode" {
[3330]	1380	set mode [$itk_component(axisMode) value]
	1381	set mode [$itk_component(axisMode) translate $mode]
	1382	set _settings($what) $mode
	1383	SendCmd "axis flymode $mode"
	1384	}
[4201]	1385	"-cutplaneedges" {
[3330]	1386	set bool $_settings($what)
[3514]	1387	SendCmd "cutplane edges $bool"
[3330]	1388	}
[4201]	1389	"-cutplanesvisible" {
[3330]	1390	set bool $_settings($what)
[4391]	1391	SendCmd "cutplane visible 0"
	1392	if { $bool } {
	1393	foreach tag [CurrentDatasets -visible] {
	1394	SendCmd "cutplane visible $bool $tag"
	1395	}
	1396	}
	1397	if { $bool } {
	1398	Rappture::Tooltip::for $itk_component(cutplane) \
	1399	"Hide the cutplanes"
	1400	} else {
	1401	Rappture::Tooltip::for $itk_component(cutplane) \
	1402	"Show the cutplanes"
	1403	}
[3330]	1404	}
[4201]	1405	"-cutplanewireframe" {
[3330]	1406	set bool $_settings($what)
[3514]	1407	SendCmd "cutplane wireframe $bool"
[3330]	1408	}
[4201]	1409	"-cutplanelighting" {
[3330]	1410	set bool $_settings($what)
[3514]	1411	SendCmd "cutplane lighting $bool"
[3330]	1412	}
[4201]	1413	"-cutplaneopacity" {
[3330]	1414	set val $_settings($what)
	1415	set sval [expr { 0.01 * double($val) }]
[3514]	1416	SendCmd "cutplane opacity $sval"
[3330]	1417	}
[4201]	1418	"-cutplanepreinterp" {
[3517]	1419	set bool $_settings($what)
	1420	SendCmd "cutplane preinterp $bool"
	1421	}
[4201]	1422	"-xcutplanevisible" - "-ycutplanevisible" - "-zcutplanevisible" {
	1423	set axis [string tolower [string range $what 1 1]]
[3330]	1424	set bool $_settings($what)
	1425	if { $bool } {
	1426	$itk_component(${axis}position) configure -state normal \
	1427	-troughcolor white
	1428	} else {
	1429	$itk_component(${axis}position) configure -state disabled \
	1430	-troughcolor grey82
	1431	}
	1432	SendCmd "cutplane axis $axis $bool"
	1433	}
[4201]	1434	"-xcutplaneposition" - "-ycutplaneposition" - "-zcutplaneposition" {
	1435	set axis [string tolower [string range $what 1 1]]
[3330]	1436	set pos [expr $_settings($what) * 0.01]
[3514]	1437	SendCmd "cutplane slice ${axis} ${pos}"
[3330]	1438	set _cutplanePending 0
	1439	}
[4201]	1440	"-colormap" {
	1441	set _changed(-colormap) 1
[3514]	1442	StartBufferingCommands
	1443	set color [$itk_component(colormap) value]
[4201]	1444	set _settings(-colormap) $color
[3330]	1445	if { $color == "none" } {
[4201]	1446	if { $_settings(-colormapvisible) } {
[3843]	1447	SendCmd "contour3d colormode constant {}"
[4201]	1448	set _settings(-colormapvisible) 0
[3330]	1449	}
	1450	} else {
[4201]	1451	if { !$_settings(-colormapvisible) } {
[3780]	1452	SendCmd "contour3d colormode $_colorMode $_curFldName"
[4201]	1453	set _settings(-colormapvisible) 1
[3330]	1454	}
[3514]	1455	SetCurrentColormap $color
[3330]	1456	}
[3514]	1457	StopBufferingCommands
[3330]	1458	EventuallyRequestLegend
	1459	}
[4201]	1460	"-numcontours" {
	1461	set _settings($what) [$itk_component(numcontours) value]
[4428]	1462	if { $_contourList(numLevels) != $_settings($what) } {
	1463	set _contourList(numLevels) $_settings($what)
	1464	EventuallyChangeContourLevels
	1465	}
[3514]	1466	}
[4201]	1467	"-isosurfacewireframe" {
	1468	set bool $_settings($what)
[3514]	1469	SendCmd "contour3d wireframe $bool"
	1470	}
[4201]	1471	"-isosurfacevisible" {
	1472	set bool $_settings($what)
[4351]	1473	SendCmd "contour3d visible 0"
[3514]	1474	if { $bool } {
[4351]	1475	foreach tag [CurrentDatasets -visible] {
	1476	SendCmd "contour3d visible $bool $tag"
	1477	}
	1478	}
	1479	if { $bool } {
[3514]	1480	Rappture::Tooltip::for $itk_component(contour) \
	1481	"Hide the isosurface"
	1482	} else {
	1483	Rappture::Tooltip::for $itk_component(contour) \
	1484	"Show the isosurface"
	1485	}
	1486	}
[4201]	1487	"-isosurfacelighting" {
	1488	set bool $_settings($what)
[3514]	1489	SendCmd "contour3d lighting $bool"
	1490	}
[4201]	1491	"-isosurfaceedges" {
	1492	set bool $_settings($what)
[3514]	1493	SendCmd "contour3d edges $bool"
	1494	}
[4429]	1495	"-outline" {
[4201]	1496	set bool $_settings($what)
[4391]	1497	SendCmd "outline visible 0"
	1498	if { $bool } {
	1499	foreach tag [CurrentDatasets -visible] {
	1500	SendCmd "outline visible $bool $tag"
	1501	}
	1502	}
[3514]	1503	}
[4201]	1504	"-isolinecolor" {
[3330]	1505	set color [$itk_component(isolineColor) value]
[4201]	1506	set _settings($what) $color
[3442]	1507	DrawLegend
[3330]	1508	}
[4201]	1509	"-isosurfaceopacity" {
	1510	set val $_settings($what)
[3330]	1511	set sval [expr { 0.01 * double($val) }]
[3514]	1512	SendCmd "contour3d opacity $sval"
[3330]	1513	}
[4201]	1514	"-field" {
[3442]	1515	set label [$itk_component(field) value]
	1516	set fname [$itk_component(field) translate $label]
[4201]	1517	set _settings($what) $fname
[3442]	1518	if { [info exists _fields($fname)] } {
	1519	foreach { label units components } $_fields($fname) break
	1520	if { $components > 1 } {
	1521	set _colorMode vmag
	1522	} else {
	1523	set _colorMode scalar
	1524	}
	1525	set _curFldName $fname
	1526	set _curFldLabel $label
[3330]	1527	} else {
[3442]	1528	puts stderr "unknown field \"$fname\""
[3330]	1529	return
	1530	}
[3555]	1531	SendCmd "dataset scalar $_curFldName"
[4351]	1532	if { ![info exists _limits($_curFldName)] } {
	1533	SendCmd "dataset maprange all"
	1534	} else {
	1535	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
	1536	}
[3555]	1537	SendCmd "cutplane colormode $_colorMode $_curFldName"
[3442]	1538	SendCmd "contour3d colormode $_colorMode $_curFldName"
	1539	SendCmd "camera reset"
	1540	DrawLegend
[3330]	1541	}
[4201]	1542	"-legendvisible" {
	1543	if { !$_settings($what) } {
[3330]	1544	$itk_component(view) delete legend
	1545	}
[3442]	1546	DrawLegend
[3330]	1547	}
	1548	default {
	1549	error "don't know how to fix $what"
	1550	}
	1551	}
	1552	}
	1553
	1554
	1555	#
	1556	# RequestLegend --
	1557	#
	1558	# Request a new legend from the server. The size of the legend
	1559	# is determined from the height of the canvas.
	1560	#
	1561	# This should be called when
	1562	# 1. A new current colormap is set.
	1563	# 2. Window is resized.
	1564	# 3. The limits of the data have changed. (Just need a redraw).
	1565	# 4. Number of isolines have changed. (Just need a redraw).
	1566	# 5. Legend becomes visible (Just need a redraw).
	1567	#
	1568	itcl::body Rappture::VtkIsosurfaceViewer::RequestLegend {} {
[3780]	1569	set _legendPending 0
[3445]	1570	if { ![info exists _fields($_curFldName)] } {
	1571	return
	1572	}
	1573	set fname $_curFldName
[3330]	1574	set font "Arial 8"
	1575	set lineht [font metrics $font -linespace]
	1576	set w 12
	1577	set h [expr {$_height - 2 * ($lineht + 2)}]
[4186]	1578	if { $h < 1 } {
[3330]	1579	return
	1580	}
[3445]	1581	if { [string match "component*" $fname] } {
	1582	set title ""
	1583	} else {
	1584	if { [info exists _fields($fname)] } {
	1585	foreach { title units } $_fields($fname) break
	1586	if { $units != "" } {
	1587	set title [format "%s (%s)" $title $units]
	1588	}
	1589	} else {
	1590	set title $fname
[3330]	1591	}
	1592	}
[3879]	1593	# If there's a title too, subtract one more line
[3445]	1594	if { $title != "" } {
	1595	incr h -$lineht
	1596	}
[3330]	1597	# Set the legend on the first heightmap dataset.
	1598	if { $_currentColormap != "" } {
	1599	set cmap $_currentColormap
[3445]	1600	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
[3330]	1601	}
	1602	}
	1603
	1604	# ----------------------------------------------------------------------
	1605	# CONFIGURATION OPTION: -plotbackground
	1606	# ----------------------------------------------------------------------
	1607	itcl::configbody Rappture::VtkIsosurfaceViewer::plotbackground {
	1608	if { [isconnected] } {
[3358]	1609	set rgb [Color2RGB $itk_option(-plotbackground)]
	1610	SendCmd "screen bgcolor $rgb"
[3330]	1611	}
	1612	}
	1613
	1614	# ----------------------------------------------------------------------
	1615	# CONFIGURATION OPTION: -plotforeground
	1616	# ----------------------------------------------------------------------
	1617	itcl::configbody Rappture::VtkIsosurfaceViewer::plotforeground {
	1618	if { [isconnected] } {
[3358]	1619	set rgb [Color2RGB $itk_option(-plotforeground)]
	1620	SendCmd "axis color all $rgb"
[3544]	1621	SendCmd "outline color $rgb"
[3843]	1622	SendCmd "cutplane color $rgb"
[3330]	1623	}
	1624	}
	1625
	1626	itcl::body Rappture::VtkIsosurfaceViewer::limits { dataobj } {
	1627	foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
	1628	foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
	1629	foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
	1630	foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
	1631	return [array get limits]
	1632	}
	1633
	1634	itcl::body Rappture::VtkIsosurfaceViewer::BuildIsosurfaceTab {} {
	1635
	1636	set fg [option get $itk_component(hull) font Font]
	1637	#set bfg [option get $itk_component(hull) boldFont Font]
	1638
	1639	set inner [$itk_component(main) insert end \
	1640	-title "Isosurface Settings" \
	1641	-icon [Rappture::icon volume-on]]
	1642	$inner configure -borderwidth 4
	1643
	1644	checkbutton $inner.contour \
	1645	-text "Isosurfaces" \
[4201]	1646	-variable [itcl::scope _settings(-isosurfacevisible)] \
	1647	-command [itcl::code $this AdjustSetting -isosurfacevisible] \
[3330]	1648	-font "Arial 9"
	1649
	1650	checkbutton $inner.wireframe \
	1651	-text "Wireframe" \
[4201]	1652	-variable [itcl::scope _settings(-isosurfacewireframe)] \
	1653	-command [itcl::code $this AdjustSetting -isosurfacewireframe] \
[3330]	1654	-font "Arial 9"
	1655
	1656	checkbutton $inner.lighting \
	1657	-text "Enable Lighting" \
[4201]	1658	-variable [itcl::scope _settings(-isosurfacelighting)] \
	1659	-command [itcl::code $this AdjustSetting -isosurfacelighting] \
[3330]	1660	-font "Arial 9"
	1661
	1662	checkbutton $inner.edges \
	1663	-text "Edges" \
[4201]	1664	-variable [itcl::scope _settings(-isosurfaceedges)] \
	1665	-command [itcl::code $this AdjustSetting -isosurfaceedges] \
[3330]	1666	-font "Arial 9"
	1667
	1668	checkbutton $inner.outline \
	1669	-text "Outline" \
[4429]	1670	-variable [itcl::scope _settings(-outline)] \
	1671	-command [itcl::code $this AdjustSetting -outline] \
[3330]	1672	-font "Arial 9"
	1673
	1674	checkbutton $inner.legend \
	1675	-text "Legend" \
[4201]	1676	-variable [itcl::scope _settings(-legendvisible)] \
	1677	-command [itcl::code $this AdjustSetting -legendvisible] \
[3330]	1678	-font "Arial 9"
	1679
	1680	label $inner.linecolor_l -text "Isolines" -font "Arial 9"
	1681	itk_component add isolineColor {
[4201]	1682	Rappture::Combobox $inner.linecolor -width 10 -editable 0
[3330]	1683	}
	1684	$inner.linecolor choices insert end \
	1685	"black" "black" \
	1686	"blue" "blue" \
	1687	"cyan" "cyan" \
	1688	"green" "green" \
	1689	"grey" "grey" \
	1690	"magenta" "magenta" \
	1691	"orange" "orange" \
	1692	"red" "red" \
	1693	"white" "white" \
	1694	"none" "none"
	1695
	1696	$itk_component(isolineColor) value "white"
	1697	bind $inner.linecolor <<Value>> \
[4341]	1698	[itcl::code $this AdjustSetting -isolinecolor]
[3330]	1699
	1700	label $inner.background_l -text "Background" -font "Arial 9"
	1701	itk_component add background {
[4201]	1702	Rappture::Combobox $inner.background -width 10 -editable 0
[3330]	1703	}
	1704	$inner.background choices insert end \
	1705	"black" "black" \
	1706	"white" "white" \
	1707	"grey" "grey"
	1708
[4201]	1709	$itk_component(background) value $_settings(-background)
	1710	bind $inner.background <<Value>> \
	1711	[itcl::code $this AdjustSetting -background]
[3330]	1712
	1713	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1714	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[4201]	1715	-variable [itcl::scope _settings(-isosurfaceopacity)] \
[3330]	1716	-width 10 \
	1717	-showvalue off \
[4201]	1718	-command [itcl::code $this AdjustSetting -isosurfaceopacity]
[3330]	1719
[3514]	1720	itk_component add field_l {
	1721	label $inner.field_l -text "Field" -font "Arial 9"
	1722	} {
	1723	ignore -font
	1724	}
[3330]	1725	itk_component add field {
[4201]	1726	Rappture::Combobox $inner.field -width 10 -editable 0
[3330]	1727	}
	1728	bind $inner.field <<Value>> \
[4201]	1729	[itcl::code $this AdjustSetting -field]
[3330]	1730
[3514]	1731	label $inner.colormap_l -text "Colormap" -font "Arial 9"
	1732	itk_component add colormap {
[4201]	1733	Rappture::Combobox $inner.colormap -width 10 -editable 0
[3330]	1734	}
	1735
[4449]	1736	$inner.colormap choices insert end [GetColormapList]
[3514]	1737	$itk_component(colormap) value "BCGYR"
	1738	bind $inner.colormap <<Value>> \
[4201]	1739	[itcl::code $this AdjustSetting -colormap]
[3330]	1740
[3514]	1741	label $inner.numcontours_l -text "Number of Isosurfaces" -font "Arial 9"
	1742	itk_component add numcontours {
	1743	Rappture::Spinint $inner.numcontours \
[4186]	1744	-min 0 -max 50 -font "arial 9"
[3514]	1745	}
[4201]	1746	$itk_component(numcontours) value $_settings(-numcontours)
[3514]	1747	bind $itk_component(numcontours) <<Value>> \
[4201]	1748	[itcl::code $this AdjustSetting -numcontours]
[3514]	1749
[3330]	1750	blt::table $inner \
[3514]	1751	0,0 $inner.field_l -anchor w -pady 2 \
	1752	0,1 $inner.field -anchor w -pady 2 -fill x \
	1753	1,0 $inner.colormap_l -anchor w -pady 2 \
	1754	1,1 $inner.colormap -anchor w -pady 2 -fill x \
	1755	2,0 $inner.linecolor_l -anchor w -pady 2 \
	1756	2,1 $inner.linecolor -anchor w -pady 2 -fill x \
	1757	3,0 $inner.background_l -anchor w -pady 2 \
	1758	3,1 $inner.background -anchor w -pady 2 -fill x \
	1759	4,0 $inner.numcontours_l -anchor w -pady 2 \
	1760	4,1 $inner.numcontours -anchor w -pady 2 \
	1761	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
	1762	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
	1763	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
	1764	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
	1765	9,0 $inner.legend -anchor w -pady 2 \
	1766	10,0 $inner.opacity_l -anchor w -pady 2 \
	1767	10,1 $inner.opacity -fill x -pady 2 -fill x \
[3330]	1768
	1769	blt::table configure $inner r* c* -resize none
	1770	blt::table configure $inner r11 c1 -resize expand
	1771	}
	1772
	1773	itcl::body Rappture::VtkIsosurfaceViewer::BuildAxisTab {} {
	1774
	1775	set fg [option get $itk_component(hull) font Font]
	1776	#set bfg [option get $itk_component(hull) boldFont Font]
	1777
	1778	set inner [$itk_component(main) insert end \
	1779	-title "Axis Settings" \
[3517]	1780	-icon [Rappture::icon axis2]]
[3330]	1781	$inner configure -borderwidth 4
	1782
	1783	checkbutton $inner.visible \
	1784	-text "Show Axes" \
[4201]	1785	-variable [itcl::scope _settings(-axesvisible)] \
	1786	-command [itcl::code $this AdjustSetting -axesvisible] \
[3330]	1787	-font "Arial 9"
	1788
	1789	checkbutton $inner.labels \
	1790	-text "Show Axis Labels" \
[4201]	1791	-variable [itcl::scope _settings(-axislabelsvisible)] \
	1792	-command [itcl::code $this AdjustSetting -axislabelsvisible] \
[3330]	1793	-font "Arial 9"
	1794
	1795	checkbutton $inner.gridx \
	1796	-text "Show X Grid" \
[4399]	1797	-variable [itcl::scope _settings(-xgrid)] \
	1798	-command [itcl::code $this AdjustSetting -xgrid] \
[3330]	1799	-font "Arial 9"
	1800	checkbutton $inner.gridy \
	1801	-text "Show Y Grid" \
[4399]	1802	-variable [itcl::scope _settings(-ygrid)] \
	1803	-command [itcl::code $this AdjustSetting -ygrid] \
[3330]	1804	-font "Arial 9"
	1805	checkbutton $inner.gridz \
	1806	-text "Show Z Grid" \
[4399]	1807	-variable [itcl::scope _settings(-zgrid)] \
	1808	-command [itcl::code $this AdjustSetting -zgrid] \
[3330]	1809	-font "Arial 9"
	1810
	1811	label $inner.mode_l -text "Mode" -font "Arial 9"
	1812
	1813	itk_component add axisMode {
[4201]	1814	Rappture::Combobox $inner.mode -width 10 -editable 0
[3330]	1815	}
	1816	$inner.mode choices insert end \
	1817	"static_triad" "static" \
	1818	"closest_triad" "closest" \
[4186]	1819	"furthest_triad" "farthest" \
[3330]	1820	"outer_edges" "outer"
	1821	$itk_component(axisMode) value "static"
[4201]	1822	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
[3330]	1823
	1824	blt::table $inner \
	1825	0,0 $inner.visible -anchor w -cspan 2 \
	1826	1,0 $inner.labels -anchor w -cspan 2 \
	1827	2,0 $inner.gridx -anchor w -cspan 2 \
	1828	3,0 $inner.gridy -anchor w -cspan 2 \
	1829	4,0 $inner.gridz -anchor w -cspan 2 \
	1830	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
	1831	6,0 $inner.mode -fill x -cspan 2
	1832
	1833	blt::table configure $inner r* c* -resize none
	1834	blt::table configure $inner r7 c1 -resize expand
	1835	}
	1836
	1837
	1838	itcl::body Rappture::VtkIsosurfaceViewer::BuildCameraTab {} {
	1839	set inner [$itk_component(main) insert end \
	1840	-title "Camera Settings" \
	1841	-icon [Rappture::icon camera]]
	1842	$inner configure -borderwidth 4
	1843
[3517]	1844	label $inner.view_l -text "view" -font "Arial 9"
	1845	set f [frame $inner.view]
	1846	foreach side { front back left right top bottom } {
	1847	button $f.$side -image [Rappture::icon view$side] \
	1848	-command [itcl::code $this SetOrientation $side]
	1849	Rappture::Tooltip::for $f.$side "Change the view to $side"
	1850	pack $f.$side -side left
	1851	}
	1852
	1853	blt::table $inner \
[3536]	1854	0,0 $inner.view_l -anchor e -pady 2 \
	1855	0,1 $inner.view -anchor w -pady 2
[3517]	1856
[3330]	1857	set labels { qx qy qz qw xpan ypan zoom }
[3517]	1858	set row 1
[3330]	1859	foreach tag $labels {
	1860	label $inner.${tag}label -text $tag -font "Arial 9"
	1861	entry $inner.${tag} -font "Arial 9" -bg white \
	1862	-textvariable [itcl::scope _view($tag)]
	1863	bind $inner.${tag} <KeyPress-Return> \
	1864	[itcl::code $this camera set ${tag}]
	1865	blt::table $inner \
	1866	$row,0 $inner.${tag}label -anchor e -pady 2 \
	1867	$row,1 $inner.${tag} -anchor w -pady 2
	1868	blt::table configure $inner r$row -resize none
	1869	incr row
	1870	}
	1871	checkbutton $inner.ortho \
	1872	-text "Orthographic Projection" \
	1873	-variable [itcl::scope _view(ortho)] \
	1874	-command [itcl::code $this camera set ortho] \
	1875	-font "Arial 9"
	1876	blt::table $inner \
[3441]	1877	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
[3330]	1878	blt::table configure $inner r$row -resize none
	1879	incr row
	1880
[3517]	1881	blt::table configure $inner c* r* -resize none
[3330]	1882	blt::table configure $inner c2 -resize expand
	1883	blt::table configure $inner r$row -resize expand
	1884	}
	1885
	1886	itcl::body Rappture::VtkIsosurfaceViewer::BuildCutplaneTab {} {
	1887
	1888	set fg [option get $itk_component(hull) font Font]
	1889
	1890	set inner [$itk_component(main) insert end \
	1891	-title "Cutplane Settings" \
	1892	-icon [Rappture::icon cutbutton]]
	1893
	1894	$inner configure -borderwidth 4
	1895
	1896	checkbutton $inner.visible \
	1897	-text "Cutplanes" \
[4201]	1898	-variable [itcl::scope _settings(-cutplanesvisible)] \
	1899	-command [itcl::code $this AdjustSetting -cutplanesvisible] \
[3330]	1900	-font "Arial 9"
	1901
	1902	checkbutton $inner.wireframe \
	1903	-text "Wireframe" \
[4201]	1904	-variable [itcl::scope _settings(-cutplanewireframe)] \
	1905	-command [itcl::code $this AdjustSetting -cutplanewireframe] \
[3330]	1906	-font "Arial 9"
	1907
	1908	checkbutton $inner.lighting \
	1909	-text "Enable Lighting" \
[4201]	1910	-variable [itcl::scope _settings(-cutplanelighting)] \
	1911	-command [itcl::code $this AdjustSetting -cutplanelighting] \
[3330]	1912	-font "Arial 9"
	1913
	1914	checkbutton $inner.edges \
	1915	-text "Edges" \
[4201]	1916	-variable [itcl::scope _settings(-cutplaneedges)] \
	1917	-command [itcl::code $this AdjustSetting -cutplaneedges] \
[3330]	1918	-font "Arial 9"
	1919
[3517]	1920	checkbutton $inner.preinterp \
[3536]	1921	-text "Interpolate Scalars" \
[4201]	1922	-variable [itcl::scope _settings(-cutplanepreinterp)] \
	1923	-command [itcl::code $this AdjustSetting -cutplanepreinterp] \
[3517]	1924	-font "Arial 9"
	1925
[3330]	1926	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1927	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[4201]	1928	-variable [itcl::scope _settings(-cutplaneopacity)] \
[3330]	1929	-width 10 \
	1930	-showvalue off \
[4201]	1931	-command [itcl::code $this AdjustSetting -cutplaneopacity]
	1932	$inner.opacity set $_settings(-cutplaneopacity)
[3330]	1933
	1934	# X-value slicer...
	1935	itk_component add xbutton {
	1936	Rappture::PushButton $inner.xbutton \
	1937	-onimage [Rappture::icon x-cutplane-red] \
	1938	-offimage [Rappture::icon x-cutplane-red] \
[4201]	1939	-command [itcl::code $this AdjustSetting -xcutplanevisible] \
	1940	-variable [itcl::scope _settings(-xcutplanevisible)] \
[3330]	1941	}
	1942	Rappture::Tooltip::for $itk_component(xbutton) \
	1943	"Toggle the X-axis cutplane on/off"
	1944	$itk_component(xbutton) select
	1945	itk_component add xposition {
	1946	::scale $inner.xval -from 100 -to 0 \
[4201]	1947	-width 10 -orient vertical -showvalue 1 \
[3330]	1948	-borderwidth 1 -highlightthickness 0 \
	1949	-command [itcl::code $this EventuallySetCutplane x] \
[4201]	1950	-variable [itcl::scope _settings(-xcutplaneposition)] \
[3332]	1951	-foreground red2 -font "Arial 9 bold"
[3330]	1952	} {
	1953	usual
	1954	ignore -borderwidth -highlightthickness -foreground -font -background
	1955	}
	1956	# Set the default cutplane value before disabling the scale.
	1957	$itk_component(xposition) set 50
	1958	$itk_component(xposition) configure -state disabled
	1959	Rappture::Tooltip::for $itk_component(xposition) \
	1960	"@[itcl::code $this Slice tooltip x]"
	1961
	1962	# Y-value slicer...
	1963	itk_component add ybutton {
	1964	Rappture::PushButton $inner.ybutton \
	1965	-onimage [Rappture::icon y-cutplane-green] \
	1966	-offimage [Rappture::icon y-cutplane-green] \
[4201]	1967	-command [itcl::code $this AdjustSetting -ycutplanevisible] \
	1968	-variable [itcl::scope _settings(-ycutplanevisible)] \
[3330]	1969	}
	1970	Rappture::Tooltip::for $itk_component(ybutton) \
	1971	"Toggle the Y-axis cutplane on/off"
	1972	$itk_component(ybutton) select
	1973
	1974	itk_component add yposition {
	1975	::scale $inner.yval -from 100 -to 0 \
[4201]	1976	-width 10 -orient vertical -showvalue 1 \
[3330]	1977	-borderwidth 1 -highlightthickness 0 \
	1978	-command [itcl::code $this EventuallySetCutplane y] \
[4201]	1979	-variable [itcl::scope _settings(-ycutplaneposition)] \
[3330]	1980	-foreground green3 -font "Arial 9 bold"
	1981	} {
	1982	usual
	1983	ignore -borderwidth -highlightthickness -foreground -font
	1984	}
	1985	Rappture::Tooltip::for $itk_component(yposition) \
	1986	"@[itcl::code $this Slice tooltip y]"
	1987	# Set the default cutplane value before disabling the scale.
	1988	$itk_component(yposition) set 50
	1989	$itk_component(yposition) configure -state disabled
	1990
	1991	# Z-value slicer...
	1992	itk_component add zbutton {
	1993	Rappture::PushButton $inner.zbutton \
	1994	-onimage [Rappture::icon z-cutplane-blue] \
	1995	-offimage [Rappture::icon z-cutplane-blue] \
[4201]	1996	-command [itcl::code $this AdjustSetting -zcutplanevisible] \
	1997	-variable [itcl::scope _settings(-zcutplanevisible)] \
[3330]	1998	} {
	1999	usual
	2000	ignore -foreground
	2001	}
	2002	Rappture::Tooltip::for $itk_component(zbutton) \
	2003	"Toggle the Z-axis cutplane on/off"
	2004	$itk_component(zbutton) select
	2005
	2006	itk_component add zposition {
	2007	::scale $inner.zval -from 100 -to 0 \
[4201]	2008	-width 10 -orient vertical -showvalue 1 \
[3330]	2009	-borderwidth 1 -highlightthickness 0 \
	2010	-command [itcl::code $this EventuallySetCutplane z] \
[4201]	2011	-variable [itcl::scope _settings(-zcutplaneposition)] \
[3330]	2012	-foreground blue3 -font "Arial 9 bold"
	2013	} {
	2014	usual
	2015	ignore -borderwidth -highlightthickness -foreground -font
	2016	}
	2017	$itk_component(zposition) set 50
	2018	$itk_component(zposition) configure -state disabled
	2019	Rappture::Tooltip::for $itk_component(zposition) \
	2020	"@[itcl::code $this Slice tooltip z]"
	2021
	2022	blt::table $inner \
	2023	0,0 $inner.visible -anchor w -pady 2 -cspan 3 \
	2024	1,0 $inner.lighting -anchor w -pady 2 -cspan 3 \
	2025	2,0 $inner.wireframe -anchor w -pady 2 -cspan 3 \
	2026	3,0 $inner.edges -anchor w -pady 2 -cspan 3 \
[3517]	2027	4,0 $inner.preinterp -anchor w -pady 2 -cspan 3 \
	2028	5,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
	2029	5,1 $inner.opacity -fill x -pady 2 -cspan 3 \
[3330]	2030	6,0 $inner.xbutton -anchor w -padx 2 -pady 2 \
	2031	7,0 $inner.ybutton -anchor w -padx 2 -pady 2 \
	2032	8,0 $inner.zbutton -anchor w -padx 2 -pady 2 \
	2033	6,1 $inner.xval -fill y -rspan 4 \
	2034	6,2 $inner.yval -fill y -rspan 4 \
	2035	6,3 $inner.zval -fill y -rspan 4 \
	2036
	2037
	2038	blt::table configure $inner r* c* -resize none
	2039	blt::table configure $inner r9 c4 -resize expand
	2040	}
	2041
	2042
	2043
	2044	#
	2045	# camera --
	2046	#
	2047	itcl::body Rappture::VtkIsosurfaceViewer::camera {option args} {
	2048	switch -- $option {
	2049	"show" {
	2050	puts [array get _view]
	2051	}
	2052	"set" {
	2053	set who [lindex $args 0]
	2054	set x $_view($who)
	2055	set code [catch { string is double $x } result]
	2056	if { $code != 0 \|\| !$result } {
	2057	return
	2058	}
	2059	switch -- $who {
	2060	"ortho" {
	2061	if {$_view(ortho)} {
	2062	SendCmd "camera mode ortho"
	2063	} else {
	2064	SendCmd "camera mode persp"
	2065	}
	2066	}
	2067	"xpan" - "ypan" {
	2068	PanCamera
	2069	}
	2070	"qx" - "qy" - "qz" - "qw" {
	2071	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	2072	$_arcball quaternion $q
	2073	EventuallyRotate $q
	2074	}
	2075	"zoom" {
	2076	SendCmd "camera zoom $_view(zoom)"
	2077	}
	2078	}
	2079	}
	2080	}
	2081	}
	2082
	2083	itcl::body Rappture::VtkIsosurfaceViewer::GetVtkData { args } {
	2084	set bytes ""
	2085	foreach dataobj [get] {
	2086	foreach cname [$dataobj components] {
	2087	set tag $dataobj-$cname
	2088	set contents [$dataobj vtkdata $cname]
[3780]	2089	append bytes "$contents\n"
[3330]	2090	}
	2091	}
	2092	return [list .vtk $bytes]
	2093	}
	2094
	2095	itcl::body Rappture::VtkIsosurfaceViewer::GetImage { args } {
	2096	if { [image width $_image(download)] > 0 &&
	2097	[image height $_image(download)] > 0 } {
	2098	set bytes [$_image(download) data -format "jpeg -quality 100"]
	2099	set bytes [Rappture::encoding::decode -as b64 $bytes]
	2100	return [list .jpg $bytes]
	2101	}
	2102	return ""
	2103	}
	2104
	2105	itcl::body Rappture::VtkIsosurfaceViewer::BuildDownloadPopup { popup command } {
	2106	Rappture::Balloon $popup \
	2107	-title "[Rappture::filexfer::label downloadWord] as..."
	2108	set inner [$popup component inner]
	2109	label $inner.summary -text "" -anchor w
	2110	radiobutton $inner.vtk_button -text "VTK data file" \
	2111	-variable [itcl::scope _downloadPopup(format)] \
	2112	-font "Arial 9 " \
	2113	-value vtk
	2114	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
	2115	radiobutton $inner.image_button -text "Image File" \
	2116	-variable [itcl::scope _downloadPopup(format)] \
	2117	-font "Arial 9 " \
	2118	-value image
	2119	Rappture::Tooltip::for $inner.image_button \
	2120	"Save as digital image."
	2121
	2122	button $inner.ok -text "Save" \
	2123	-highlightthickness 0 -pady 2 -padx 3 \
	2124	-command $command \
	2125	-compound left \
	2126	-image [Rappture::icon download]
	2127
	2128	button $inner.cancel -text "Cancel" \
	2129	-highlightthickness 0 -pady 2 -padx 3 \
	2130	-command [list $popup deactivate] \
	2131	-compound left \
	2132	-image [Rappture::icon cancel]
	2133
	2134	blt::table $inner \
	2135	0,0 $inner.summary -cspan 2 \
	2136	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
	2137	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
	2138	4,1 $inner.cancel -width .9i -fill y \
	2139	4,0 $inner.ok -padx 2 -width .9i -fill y
	2140	blt::table configure $inner r3 -height 4
	2141	blt::table configure $inner r4 -pady 4
	2142	raise $inner.image_button
	2143	$inner.vtk_button invoke
	2144	return $inner
	2145	}
	2146
	2147	itcl::body Rappture::VtkIsosurfaceViewer::SetObjectStyle { dataobj comp } {
	2148	# Parse style string.
	2149	set tag $dataobj-$comp
	2150	array set style {
	2151	-color BCGYR
[4351]	2152	-cutplanesvisible 0
	2153	-edgecolor black
[3330]	2154	-edges 0
[4351]	2155	-isosurfacevisible 1
	2156	-levels 10
	2157	-lighting 1
[3330]	2158	-linewidth 1.0
	2159	-opacity 0.6
[4351]	2160	-outline 0
[3330]	2161	-wireframe 0
[4351]	2162	-xcutplaneposition 50
[4201]	2163	-xcutplanevisible 1
[4351]	2164	-ycutplaneposition 50
[4201]	2165	-ycutplanevisible 1
[4351]	2166	-zcutplaneposition 50
[4201]	2167	-zcutplanevisible 1
[3330]	2168	}
	2169	array set style [$dataobj style $comp]
[4186]	2170	if { $dataobj != $_first \|\| $style(-levels) == 1 } {
[3330]	2171	set style(-opacity) 1
	2172	}
	2173	SendCmd "cutplane add $tag"
[4186]	2174	SendCmd "cutplane visible 0 $tag"
[3330]	2175
[3514]	2176	# This is too complicated. We want to set the colormap, number of
	2177	# isolines and opacity for the dataset. They can be the default values,
	2178	# the style hints loaded with the dataset, or set by user controls. As
	2179	# datasets get loaded, they first use the defaults that are overidden
	2180	# by the style hints. If the user changes the global controls, then that
	2181	# overrides everything else. I don't know what it means when global
	2182	# controls are specified as style hints by each dataset. It complicates
	2183	# the code to handle aberrant cases.
	2184
[4201]	2185	if { $_changed(-isosurfaceopacity) } {
[4431]	2186	set style(-opacity) [expr $_settings(-isosurfaceopacity) * 0.01]
[3514]	2187	}
[4201]	2188	if { $_changed(-numcontours) } {
	2189	set style(-levels) $_settings(-numcontours)
[3514]	2190	}
[4201]	2191	if { $_changed(-colormap) } {
	2192	set style(-color) $_settings(-colormap)
[3514]	2193	}
	2194	if { $_currentColormap == "" } {
[4186]	2195	SetCurrentColormap $style(-color)
[3514]	2196	$itk_component(colormap) value $style(-color)
	2197	}
[4426]	2198	if { $_contourList(numLevels) != $style(-levels) } {
	2199	set _settings(-numcontours) $style(-levels)
	2200	$itk_component(numcontours) value $style(-levels)
	2201	set _contourList(numLevels) $style(-levels)
	2202	EventuallyChangeContourLevels
[3514]	2203	}
[4201]	2204	set _settings(-isosurfacevisible) $style(-isosurfacevisible)
	2205	set _settings(-cutplanesvisible) $style(-cutplanesvisible)
	2206	set _settings(-xcutplanevisible) $style(-xcutplanevisible)
	2207	set _settings(-ycutplanevisible) $style(-ycutplanevisible)
	2208	set _settings(-zcutplanevisible) $style(-zcutplanevisible)
	2209	set _settings(-xcutplaneposition) $style(-xcutplaneposition)
	2210	set _settings(-ycutplaneposition) $style(-ycutplaneposition)
	2211	set _settings(-zcutplaneposition) $style(-zcutplaneposition)
	2212
[4426]	2213	GenerateContourList
	2214	SendCmd [list contour3d add contourlist $_contourList(values) $tag]
	2215
[3330]	2216	SendCmd "contour3d edges $style(-edges) $tag"
[3544]	2217	SendCmd "outline add $tag"
	2218	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
	2219	SendCmd "outline visible $style(-outline) $tag"
[4429]	2220	set _settings(-outline) $style(-outline)
[4201]	2221	set _settings(-isosurfaceedges) $style(-edges)
[3330]	2222	#SendCmd "contour3d color [Color2RGB $settings(-color)] $tag"
	2223	SendCmd "contour3d lighting $style(-lighting) $tag"
[4201]	2224	set _settings(-isosurfacelighting) $style(-lighting)
[3330]	2225	SendCmd "contour3d linecolor [Color2RGB $style(-edgecolor)] $tag"
	2226	SendCmd "contour3d linewidth $style(-linewidth) $tag"
[4431]	2227	SendCmd "contour3d opacity $style(-opacity) $tag"
	2228	set _settings(-isosurfaceopacity) [expr $style(-opacity) * 100.0]
[3514]	2229	SetCurrentColormap $style(-color)
[3330]	2230	SendCmd "contour3d wireframe $style(-wireframe) $tag"
[4201]	2231	set _settings(-isosurfacewireframe) $style(-wireframe)
[3330]	2232	}
	2233
	2234	itcl::body Rappture::VtkIsosurfaceViewer::IsValidObject { dataobj } {
	2235	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
	2236	return 0
	2237	}
	2238	return 1
	2239	}
	2240
	2241	#
	2242	# EnterLegend --
	2243	#
	2244	itcl::body Rappture::VtkIsosurfaceViewer::EnterLegend { x y } {
	2245	SetLegendTip $x $y
	2246	}
	2247
	2248	#
	2249	# MotionLegend --
	2250	#
	2251	itcl::body Rappture::VtkIsosurfaceViewer::MotionLegend { x y } {
	2252	Rappture::Tooltip::tooltip cancel
	2253	set c $itk_component(view)
[3442]	2254	set cw [winfo width $c]
	2255	set ch [winfo height $c]
	2256	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
	2257	SetLegendTip $x $y
	2258	}
[3330]	2259	}
	2260
	2261	#
	2262	# LeaveLegend --
	2263	#
	2264	itcl::body Rappture::VtkIsosurfaceViewer::LeaveLegend { } {
	2265	Rappture::Tooltip::tooltip cancel
	2266	.rappturetooltip configure -icon ""
	2267	}
	2268
	2269	#
	2270	# SetLegendTip --
	2271	#
	2272	itcl::body Rappture::VtkIsosurfaceViewer::SetLegendTip { x y } {
[3442]	2273	set fname $_curFldName
[3330]	2274	set c $itk_component(view)
	2275	set w [winfo width $c]
	2276	set h [winfo height $c]
[3416]	2277
[3330]	2278	set font "Arial 8"
	2279	set lineht [font metrics $font -linespace]
	2280
[3416]	2281	set ih [image height $_image(legend)]
	2282	set iy [expr $y - ($lineht + 2)]
[3330]	2283
[3445]	2284	if { [string match "component*" $fname] } {
[3442]	2285	set title ""
[3330]	2286	} else {
[3442]	2287	if { [info exists _fields($fname)] } {
	2288	foreach { title units } $_fields($fname) break
	2289	if { $units != "" } {
	2290	set title [format "%s (%s)" $title $units]
	2291	}
	2292	} else {
	2293	set title $fname
[3330]	2294	}
	2295	}
[3416]	2296	# If there's a legend title, increase the offset by the line height.
	2297	if { $title != "" } {
[3442]	2298	incr iy -$lineht
[3416]	2299	}
[3330]	2300	# Make a swatch of the selected color
[3416]	2301	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
[3330]	2302	return
	2303	}
	2304	if { ![info exists _image(swatch)] } {
	2305	set _image(swatch) [image create photo -width 24 -height 24]
	2306	}
	2307	set color [eval format "\#%02x%02x%02x" $pixel]
	2308	$_image(swatch) put black -to 0 0 23 23
	2309	$_image(swatch) put $color -to 1 1 22 22
	2310	.rappturetooltip configure -icon $_image(swatch)
	2311
	2312	# Compute the value of the point
[3440]	2313	if { [info exists _limits($_curFldName)] } {
	2314	foreach { vmin vmax } $_limits($_curFldName) break
[3416]	2315	set t [expr 1.0 - (double($iy) / double($ih-1))]
[3440]	2316	set value [expr $t * ($vmax - $vmin) + $vmin]
[3330]	2317	} else {
	2318	set value 0.0
	2319	}
[3416]	2320	set tx [expr $x + 15]
	2321	set ty [expr $y - 5]
[3442]	2322	if { [info exists _isolines($y)] } {
	2323	Rappture::Tooltip::text $c [format "$title %g (isosurface)" $_isolines($y)]
	2324	} else {
	2325	Rappture::Tooltip::text $c [format "$title %g" $value]
	2326	}
[3416]	2327	Rappture::Tooltip::tooltip show $c +$tx,+$ty
[3330]	2328	}
	2329
	2330
	2331	# ----------------------------------------------------------------------
	2332	# USAGE: Slice move x\|y\|z <newval>
	2333	#
	2334	# Called automatically when the user drags the slider to move the
	2335	# cut plane that slices 3D data. Gets the current value from the
	2336	# slider and moves the cut plane to the appropriate point in the
	2337	# data set.
	2338	# ----------------------------------------------------------------------
	2339	itcl::body Rappture::VtkIsosurfaceViewer::Slice {option args} {
	2340	switch -- $option {
	2341	"move" {
	2342	set axis [lindex $args 0]
	2343	set newval [lindex $args 1]
	2344	if {[llength $args] != 2} {
	2345	error "wrong # args: should be \"Slice move x\|y\|z newval\""
	2346	}
	2347	set newpos [expr {0.01*$newval}]
	2348	SendCmd "cutplane slice $axis $newpos"
	2349	}
	2350	"tooltip" {
	2351	set axis [lindex $args 0]
	2352	set val [$itk_component(${axis}position) get]
	2353	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
	2354	}
	2355	default {
	2356	error "bad option \"$option\": should be axis, move, or tooltip"
	2357	}
	2358	}
	2359	}
	2360
	2361	#
	2362	# ReceiveLegend --
	2363	#
	2364	# Invoked automatically whenever the "legend" command comes in from
	2365	# the rendering server. Indicates that binary image data with the
	2366	# specified <size> will follow.
	2367	#
	2368	itcl::body Rappture::VtkIsosurfaceViewer::ReceiveLegend { colormap title min max size } {
	2369	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
	2370	set _title $title
	2371	regsub {\(mag\)} $title "" _title
	2372	if { [IsConnected] } {
	2373	set bytes [ReceiveBytes $size]
	2374	if { ![info exists _image(legend)] } {
	2375	set _image(legend) [image create photo]
	2376	}
	2377	$_image(legend) configure -data $bytes
	2378	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
[3442]	2379	if { [catch {DrawLegend} errs] != 0 } {
[3330]	2380	global errorInfo
	2381	puts stderr "errs=$errs errorInfo=$errorInfo"
	2382	}
	2383	}
	2384	}
	2385
	2386	#
	2387	# DrawLegend --
	2388	#
[3416]	2389	# Draws the legend in the own canvas on the right side of the plot area.
[3330]	2390	#
[3442]	2391	itcl::body Rappture::VtkIsosurfaceViewer::DrawLegend {} {
	2392	set fname $_curFldName
[3330]	2393	set c $itk_component(view)
	2394	set w [winfo width $c]
	2395	set h [winfo height $c]
	2396	set font "Arial 8"
	2397	set lineht [font metrics $font -linespace]
	2398
[3445]	2399	if { [string match "component*" $fname] } {
[3330]	2400	set title ""
	2401	} else {
[3442]	2402	if { [info exists _fields($fname)] } {
	2403	foreach { title units } $_fields($fname) break
[3330]	2404	if { $units != "" } {
	2405	set title [format "%s (%s)" $title $units]
	2406	}
	2407	} else {
[3442]	2408	set title $fname
[3330]	2409	}
	2410	}
	2411	set x [expr $w - 2]
[4201]	2412	if { !$_settings(-legendvisible) } {
[3330]	2413	$c delete legend
	2414	return
	2415	}
	2416	if { [$c find withtag "legend"] == "" } {
	2417	set y 2
	2418	# If there's a legend title, create a text item for the title.
[3547]	2419	$c create text $x $y \
[4351]	2420	-anchor ne \
	2421	-fill $itk_option(-plotforeground) -tags "title legend" \
	2422	-font $font
	2423	if { $title != "" } {
	2424	incr y $lineht
	2425	}
[3330]	2426	$c create text $x $y \
	2427	-anchor ne \
[3780]	2428	-fill $itk_option(-plotforeground) -tags "vmax legend" \
[3330]	2429	-font $font
	2430	incr y $lineht
	2431	$c create image $x $y \
	2432	-anchor ne \
	2433	-image $_image(legend) -tags "colormap legend"
[3442]	2434	$c create rectangle $x $y 1 1 \
	2435	-fill "" -outline "" -tags "sensor legend"
[3330]	2436	$c create text $x [expr {$h-2}] \
	2437	-anchor se \
[3780]	2438	-fill $itk_option(-plotforeground) -tags "vmin legend" \
[3330]	2439	-font $font
[3442]	2440	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
	2441	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
	2442	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
[3330]	2443	}
	2444	$c delete isoline
	2445	set x2 $x
	2446	set iw [image width $_image(legend)]
	2447	set ih [image height $_image(legend)]
	2448	set x1 [expr $x2 - ($iw*12)/10]
[4201]	2449	set color $_settings(-isolinecolor)
[3330]	2450	# Draw the isolines on the legend.
[3442]	2451	array unset _isolines
	2452	if { $color != "none" && [info exists _limits($_curFldName)] &&
[4201]	2453	$_settings(-numcontours) > 0 } {
[3538]	2454
	2455	foreach { vmin vmax } $_limits($_curFldName) break
	2456	set range [expr double($vmax - $vmin)]
	2457	if { $range <= 0.0 } {
	2458	set range 1.0; # Min is greater or equal to max.
	2459	}
	2460	set tags "isoline legend"
[3330]	2461	set offset [expr 2 + $lineht]
	2462	if { $title != "" } {
	2463	incr offset $lineht
	2464	}
[4426]	2465	foreach value $_contourList(values) {
[3543]	2466	set norm [expr 1.0 - (($value - $vmin) / $range)]
[3538]	2467	set y1 [expr int(round(($norm * $ih) + $offset))]
[3442]	2468	for { set off 0 } { $off < 3 } { incr off } {
	2469	set _isolines([expr $y1 + $off]) $value
	2470	set _isolines([expr $y1 - $off]) $value
[3440]	2471	}
[3538]	2472	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
[3440]	2473	}
[3330]	2474	}
	2475
	2476	$c bind title <ButtonPress> [itcl::code $this Combo post]
	2477	$c bind title <Enter> [itcl::code $this Combo activate]
	2478	$c bind title <Leave> [itcl::code $this Combo deactivate]
	2479	# Reset the item coordinates according the current size of the plot.
	2480	$c itemconfigure title -text $title
[3440]	2481	if { [info exists _limits($_curFldName)] } {
	2482	foreach { vmin vmax } $_limits($_curFldName) break
[3780]	2483	$c itemconfigure vmin -text [format %g $vmin]
	2484	$c itemconfigure vmax -text [format %g $vmax]
[3330]	2485	}
	2486	set y 2
	2487	# If there's a legend title, move the title to the correct position
	2488	if { $title != "" } {
[3547]	2489	$c itemconfigure title -text $title
[3330]	2490	$c coords title $x $y
	2491	incr y $lineht
[3547]	2492	$c raise title
[3330]	2493	}
[3780]	2494	$c coords vmax $x $y
[3330]	2495	incr y $lineht
	2496	$c coords colormap $x $y
[3442]	2497	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
	2498	$c raise sensor
[3780]	2499	$c coords vmin $x [expr {$h - 2}]
[3330]	2500	}
	2501
	2502	# ----------------------------------------------------------------------
	2503	# USAGE: _dropdown post
	2504	# USAGE: _dropdown unpost
	2505	# USAGE: _dropdown select
	2506	#
	2507	# Used internally to handle the dropdown list for this combobox. The
	2508	# post/unpost options are invoked when the list is posted or unposted
	2509	# to manage the relief of the controlling button. The select option
	2510	# is invoked whenever there is a selection from the list, to assign
	2511	# the value back to the gauge.
	2512	# ----------------------------------------------------------------------
	2513	itcl::body Rappture::VtkIsosurfaceViewer::Combo {option} {
	2514	set c $itk_component(view)
	2515	switch -- $option {
	2516	post {
	2517	foreach { x1 y1 x2 y2 } [$c bbox title] break
[3547]	2518	set cw [winfo width $itk_component(view)]
	2519	set mw [winfo reqwidth $itk_component(fieldmenu)]
	2520	set x1 [expr $cw - $mw]
[3330]	2521	set x [expr $x1 + [winfo rootx $itk_component(view)]]
	2522	set y [expr $y2 + [winfo rooty $itk_component(view)]]
	2523	tk_popup $itk_component(fieldmenu) $x $y
	2524	}
	2525	activate {
	2526	$c itemconfigure title -fill red
	2527	}
	2528	deactivate {
	2529	$c itemconfigure title -fill $itk_option(-plotforeground)
	2530	}
	2531	invoke {
[3409]	2532	$itk_component(field) value $_curFldLabel
[4201]	2533	AdjustSetting -field
[3330]	2534	}
	2535	default {
	2536	error "bad option \"$option\": should be post, unpost, select"
	2537	}
	2538	}
	2539	}
	2540
	2541	#
	2542	# SetCurrentColormap --
	2543	#
[3514]	2544	itcl::body Rappture::VtkIsosurfaceViewer::SetCurrentColormap { name } {
	2545	# Keep track of the colormaps that we build.
[3330]	2546	if { ![info exists _colormaps($name)] } {
[3514]	2547	BuildColormap $name
	2548	set _colormaps($name) 1
[3330]	2549	}
	2550	set _currentColormap $name
[3514]	2551	SendCmd "contour3d colormap $_currentColormap"
[4186]	2552	SendCmd "cutplane colormap $_currentColormap"
[3330]	2553	}
	2554
	2555	#
	2556	# BuildColormap --
	2557	#
[3514]	2558	# Build the designated colormap on the server.
	2559	#
	2560	itcl::body Rappture::VtkIsosurfaceViewer::BuildColormap { name } {
	2561	set cmap [ColorsToColormap $name]
[3330]	2562	if { [llength $cmap] == 0 } {
	2563	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
	2564	}
	2565	set wmap "0.0 1.0 1.0 1.0"
	2566	SendCmd "colormap add $name { $cmap } { $wmap }"
	2567	}
	2568
[3517]	2569	itcl::body Rappture::VtkIsosurfaceViewer::SetOrientation { side } {
	2570	array set positions {
	2571	front "1 0 0 0"
	2572	back "0 0 1 0"
	2573	left "0.707107 0 -0.707107 0"
	2574	right "0.707107 0 0.707107 0"
	2575	top "0.707107 -0.707107 0 0"
	2576	bottom "0.707107 0.707107 0 0"
	2577	}
	2578	foreach name { qw qx qy qz } value $positions($side) {
	2579	set _view($name) $value
	2580	}
	2581	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	2582	$_arcball quaternion $q
[3536]	2583	SendCmd "camera orient $q"
	2584	SendCmd "camera reset"
	2585	set _view(xpan) 0
	2586	set _view(ypan) 0
	2587	set _view(zoom) 1.0
[3517]	2588	}
[3538]	2589
[4426]	2590	itcl::body Rappture::VtkIsosurfaceViewer::GenerateContourList {} {
[3538]	2591	if { ![info exists _limits($_curFldName)] } {
[4426]	2592	return ""
[3538]	2593	}
[4426]	2594	if { $_contourList(numLevels) < 1 } {
	2595	return ""
[4186]	2596	}
[3538]	2597	foreach { vmin vmax } $_limits($_curFldName) break
[3622]	2598	set v [blt::vector create \#auto]
[4426]	2599	$v seq $vmin $vmax [expr $_contourList(numLevels)+2]
[3622]	2600	$v delete end 0
[4426]	2601	set values [$v range 0 end]
[3538]	2602	blt::vector destroy $v
[4426]	2603	set _contourList(values) $values
[3538]	2604	}

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