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source: trunk/gui/scripts/vtkstreamlinesviewer.tcl @ 3482

Last change on this file since 3482 was 3482, checked in by ldelgass, 12 years ago
whitespace cleanup
File size: 83.7 KB

Rev	Line
[3330]	1	# -- mode: tcl; indent-tabs-mode: nil --
[2504]	2	# ----------------------------------------------------------------------
	3	# COMPONENT: vtkviewer - Vtk drawing object viewer
	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
[3177]	9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
[2504]	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
[2743]	16	package require Img
[2504]	17
	18	option add *VtkStreamlinesViewer.width 4i widgetDefault
	19	option add VtkStreamlinesViewercursor crosshair widgetDefault
	20	option add *VtkStreamlinesViewer.height 4i widgetDefault
	21	option add *VtkStreamlinesViewer.foreground black widgetDefault
	22	option add *VtkStreamlinesViewer.controlBackground gray widgetDefault
	23	option add *VtkStreamlinesViewer.controlDarkBackground #999999 widgetDefault
	24	option add *VtkStreamlinesViewer.plotBackground black widgetDefault
	25	option add *VtkStreamlinesViewer.plotForeground white widgetDefault
	26	option add *VtkStreamlinesViewer.font \
	27	--helvetica-medium-r-normal--12-* widgetDefault
	28
	29	# must use this name -- plugs into Rappture::resources::load
	30	proc VtkStreamlinesViewer_init_resources {} {
	31	Rappture::resources::register \
	32	vtkvis_server Rappture::VtkStreamlinesViewer::SetServerList
	33	}
	34
	35	itcl::class Rappture::VtkStreamlinesViewer {
	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 parameters {title args} {
	60	# do nothing
	61	}
	62	public method scale {args}
	63
	64	protected method Connect {}
	65	protected method CurrentDatasets {args}
	66	protected method Disconnect {}
	67	protected method DoResize {}
[2600]	68	protected method DoReseed {}
[2504]	69	protected method DoRotate {}
	70	protected method AdjustSetting {what {value ""}}
[2600]	71	protected method InitSettings { args }
[2504]	72	protected method Pan {option x y}
	73	protected method Pick {x y}
	74	protected method Rebuild {}
	75	protected method ReceiveDataset { args }
	76	protected method ReceiveImage { args }
	77	protected method ReceiveLegend { colormap title vmin vmax size }
	78	protected method Rotate {option x y}
	79	protected method Zoom {option}
	80
	81	# The following methods are only used by this class.
	82	private method BuildAxisTab {}
	83	private method BuildCameraTab {}
[2585]	84	private method BuildColormap { name colors }
[2584]	85	private method BuildCutplaneTab {}
[2504]	86	private method BuildDownloadPopup { widget command }
	87	private method BuildStreamsTab {}
	88	private method BuildVolumeTab {}
	89	private method ConvertToVtkData { dataobj comp }
[3442]	90	private method DrawLegend {}
[2649]	91	private method Combo { option }
[2504]	92	private method EnterLegend { x y }
	93	private method EventuallyResize { w h }
[2600]	94	private method EventuallyReseed { numPoints }
[2504]	95	private method EventuallyRotate { q }
[2584]	96	private method EventuallySetCutplane { axis args }
[2504]	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 {}
[2587]	103	private method RequestLegend {}
[2504]	104	private method SetColormap { dataobj comp }
[2586]	105	private method ChangeColormap { dataobj comp color }
[2504]	106	private method SetLegendTip { x y }
	107	private method SetObjectStyle { dataobj comp }
	108	private method Slice {option args}
	109
	110	private variable _arcball ""
	111
[2744]	112	private variable _dlist "" ; # list of data objects
[2504]	113	private variable _obj2datasets
[2744]	114	private variable _obj2ovride ; # maps dataobj => style override
	115	private variable _datasets ; # contains all the dataobj-component
	116	; # datasets in the server
	117	private variable _colormaps ; # contains all the colormaps
	118	; # in the server.
[2504]	119	private variable _dataset2style ;# maps dataobj-component to transfunc
	120
[2744]	121	private variable _click ; # info used for rotate operations
	122	private variable _limits ; # autoscale min/max for all axes
	123	private variable _view ; # view params for 3D view
[2504]	124	private variable _settings
[2744]	125	private variable _style; # Array of current component styles.
	126	private variable _initialStyle; # Array of initial component styles.
	127	private variable _reset 1; # indicates if camera needs to be reset
	128	# to starting position.
[2504]	129
[2744]	130	private variable _first "" ; # This is the topmost dataset.
[2504]	131	private variable _start 0
	132	private variable _title ""
[2547]	133	private variable _seeds
[2504]	134
[2744]	135	common _downloadPopup; # download options from popup
[2504]	136	private common _hardcopy
	137	private variable _width 0
	138	private variable _height 0
	139	private variable _resizePending 0
[2600]	140	private variable _reseedPending 0
[2504]	141	private variable _rotatePending 0
[2584]	142	private variable _cutplanePending 0
[2652]	143	private variable _legendPending 0
[2504]	144	private variable _outline
[2600]	145	private variable _vectorFields
	146	private variable _scalarFields
[2604]	147	private variable _fields
[3405]	148	private variable _curFldName ""
	149	private variable _curFldLabel ""
[2744]	150	private variable _field ""
[2600]	151	private variable _numSeeds 200
[2587]	152	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
[2504]	153	}
	154
	155	itk::usual VtkStreamlinesViewer {
	156	keep -background -foreground -cursor -font
	157	keep -plotbackground -plotforeground
	158	}
	159
	160	# ----------------------------------------------------------------------
	161	# CONSTRUCTOR
	162	# ----------------------------------------------------------------------
	163	itcl::body Rappture::VtkStreamlinesViewer::constructor {hostlist args} {
[2792]	164	package require vtk
[2671]	165	set _serverType "vtkvis"
	166
[3454]	167	EnableWaitDialog 2000
[3446]	168
[2504]	169	# Rebuild event
	170	$_dispatcher register !rebuild
	171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
	172
	173	# Resize event
	174	$_dispatcher register !resize
	175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
	176
[2600]	177	# Reseed event
	178	$_dispatcher register !reseed
	179	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
	180
[2504]	181	# Rotate event
	182	$_dispatcher register !rotate
	183	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
	184
[2652]	185	# Legend event
	186	$_dispatcher register !legend
	187	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
	188
[2584]	189	# X-Cutplane event
	190	$_dispatcher register !xcutplane
	191	$_dispatcher dispatch $this !xcutplane \
[3330]	192	"[itcl::code $this AdjustSetting cutplaneXPosition]; list"
[2504]	193
[2584]	194	# Y-Cutplane event
	195	$_dispatcher register !ycutplane
	196	$_dispatcher dispatch $this !ycutplane \
[3330]	197	"[itcl::code $this AdjustSetting cutplaneYPosition]; list"
[2584]	198
	199	# Z-Cutplane event
	200	$_dispatcher register !zcutplane
	201	$_dispatcher dispatch $this !zcutplane \
[3330]	202	"[itcl::code $this AdjustSetting cutplaneZPosition]; list"
[2584]	203
[2504]	204	#
	205	# Populate parser with commands handle incoming requests
	206	#
	207	$_parser alias image [itcl::code $this ReceiveImage]
	208	$_parser alias dataset [itcl::code $this ReceiveDataset]
	209	$_parser alias legend [itcl::code $this ReceiveLegend]
	210
	211	array set _outline {
[2744]	212	id -1
	213	afterId -1
	214	x1 -1
	215	y1 -1
	216	x2 -1
	217	y2 -1
[2504]	218	}
	219	# Initialize the view to some default parameters.
	220	array set _view {
[3330]	221	qw 0.853553
	222	qx -0.353553
	223	qy 0.353553
	224	qz 0.146447
[2744]	225	zoom 1.0
	226	xpan 0
	227	ypan 0
	228	ortho 0
[2504]	229	}
	230	set _arcball [blt::arcball create 100 100]
	231	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	232	$_arcball quaternion $q
	233
	234	array set _settings [subst {
[3330]	235	axesVisible 1
	236	axisLabelsVisible 1
	237	axisXGrid 0
	238	axisYGrid 0
	239	axisZGrid 0
	240	cutplaneEdges 0
	241	cutplaneLighting 1
	242	cutplaneOpacity 100
	243	cutplaneVisible 0
	244	cutplaneWireframe 0
	245	cutplaneXPosition 50
	246	cutplaneXVisible 1
	247	cutplaneYPosition 50
	248	cutplaneYVisible 1
	249	cutplaneZPosition 50
	250	cutplaneZVisible 1
	251	legendVisible 1
	252	streamlinesLighting 1
	253	streamlinesMode lines
	254	streamlinesNumSeeds 200
	255	streamlinesOpacity 100
	256	streamlinesScale 1
	257	streamlinesSeedsVisible 0
	258	streamlinesVisible 1
	259	volumeEdges 0
	260	volumeLighting 1
	261	volumeOpacity 40
	262	volumeVisible 1
	263	volumeWireframe 0
[2504]	264	}]
	265
	266	itk_component add view {
	267	canvas $itk_component(plotarea).view \
	268	-highlightthickness 0 -borderwidth 0
	269	} {
	270	usual
	271	ignore -highlightthickness -borderwidth -background
	272	}
	273
[2649]	274	itk_component add fieldmenu {
	275	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
[2744]	276	-tearoff no
[2649]	277	} {
[2744]	278	usual
	279	ignore -background -foreground -relief -tearoff
[2649]	280	}
[2504]	281	set c $itk_component(view)
	282	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
	283	bind $c <4> [itcl::code $this Zoom in 0.25]
	284	bind $c <5> [itcl::code $this Zoom out 0.25]
	285	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
	286	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
	287	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
	288	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
	289	bind $c <Enter> "focus %W"
[3330]	290	bind $c <Control-F1> [itcl::code $this ToggleConsole]
[2504]	291
	292	# Fix the scrollregion in case we go off screen
	293	$c configure -scrollregion [$c bbox all]
	294
	295	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
	296	set _map(cwidth) -1
	297	set _map(cheight) -1
	298	set _map(zoom) 1.0
	299	set _map(original) ""
	300
	301	set f [$itk_component(main) component controls]
	302	itk_component add reset {
	303	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
	304	-highlightthickness 0 \
	305	-image [Rappture::icon reset-view] \
	306	-command [itcl::code $this Zoom reset]
	307	} {
	308	usual
	309	ignore -highlightthickness
	310	}
	311	pack $itk_component(reset) -side top -padx 2 -pady 2
	312	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
	313
	314	itk_component add zoomin {
	315	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
	316	-highlightthickness 0 \
	317	-image [Rappture::icon zoom-in] \
	318	-command [itcl::code $this Zoom in]
	319	} {
	320	usual
	321	ignore -highlightthickness
	322	}
	323	pack $itk_component(zoomin) -side top -padx 2 -pady 2
	324	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
	325
	326	itk_component add zoomout {
	327	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
	328	-highlightthickness 0 \
	329	-image [Rappture::icon zoom-out] \
	330	-command [itcl::code $this Zoom out]
	331	} {
	332	usual
	333	ignore -highlightthickness
	334	}
	335	pack $itk_component(zoomout) -side top -padx 2 -pady 2
	336	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
	337
[2584]	338	itk_component add volume {
	339	Rappture::PushButton $f.volume \
	340	-onimage [Rappture::icon volume-on] \
	341	-offimage [Rappture::icon volume-off] \
[3330]	342	-variable [itcl::scope _settings(volumeVisible)] \
	343	-command [itcl::code $this AdjustSetting volumeVisible]
[2584]	344	}
	345	$itk_component(volume) select
	346	Rappture::Tooltip::for $itk_component(volume) \
[2585]	347	"Don't display the volume"
[2584]	348	pack $itk_component(volume) -padx 2 -pady 2
	349
	350	itk_component add streamlines {
	351	Rappture::PushButton $f.streamlines \
[2585]	352	-onimage [Rappture::icon streamlines-on] \
	353	-offimage [Rappture::icon streamlines-off] \
[3330]	354	-variable [itcl::scope _settings(streamlinesVisible)] \
	355	-command [itcl::code $this AdjustSetting streamlinesVisible] \
[2584]	356	}
	357	$itk_component(streamlines) select
	358	Rappture::Tooltip::for $itk_component(streamlines) \
	359	"Toggle the streamlines on/off"
	360	pack $itk_component(streamlines) -padx 2 -pady 2
	361
[2622]	362	itk_component add cutplane {
	363	Rappture::PushButton $f.cutplane \
	364	-onimage [Rappture::icon cutbutton] \
	365	-offimage [Rappture::icon cutbutton] \
[3330]	366	-variable [itcl::scope _settings(cutplaneVisible)] \
	367	-command [itcl::code $this AdjustSetting cutplaneVisible]
[2622]	368	}
	369	Rappture::Tooltip::for $itk_component(cutplane) \
	370	"Show/Hide cutplanes"
	371	pack $itk_component(cutplane) -padx 2 -pady 2
	372
	373
[2504]	374	if { [catch {
[2744]	375	BuildVolumeTab
	376	BuildStreamsTab
	377	BuildCutplaneTab
	378	BuildAxisTab
	379	BuildCameraTab
[2504]	380	} errs] != 0 } {
[2744]	381	puts stderr errs=$errs
[2504]	382	}
	383	# Legend
	384
	385	set _image(legend) [image create photo]
	386	itk_component add legend {
	387	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
	388	} {
	389	usual
	390	ignore -highlightthickness
	391	rename -background -plotbackground plotBackground Background
	392	}
	393
	394	# Hack around the Tk panewindow. The problem is that the requested
	395	# size of the 3d view isn't set until an image is retrieved from
	396	# the server. So the panewindow uses the tiny size.
	397	set w 10000
	398	pack forget $itk_component(view)
	399	blt::table $itk_component(plotarea) \
	400	0,0 $itk_component(view) -fill both -reqwidth $w
	401	blt::table configure $itk_component(plotarea) c1 -resize none
	402
	403	# Bindings for rotation via mouse
	404	bind $itk_component(view) <ButtonPress-1> \
	405	[itcl::code $this Rotate click %x %y]
	406	bind $itk_component(view) <B1-Motion> \
	407	[itcl::code $this Rotate drag %x %y]
	408	bind $itk_component(view) <ButtonRelease-1> \
	409	[itcl::code $this Rotate release %x %y]
	410	bind $itk_component(view) <Configure> \
	411	[itcl::code $this EventuallyResize %w %h]
	412
	413	if 0 {
	414	bind $itk_component(view) <Configure> \
	415	[itcl::code $this EventuallyResize %w %h]
	416	}
	417	# Bindings for panning via mouse
	418	bind $itk_component(view) <ButtonPress-2> \
	419	[itcl::code $this Pan click %x %y]
	420	bind $itk_component(view) <B2-Motion> \
	421	[itcl::code $this Pan drag %x %y]
	422	bind $itk_component(view) <ButtonRelease-2> \
	423	[itcl::code $this Pan release %x %y]
	424
[3443]	425	#bind $itk_component(view) <ButtonRelease-3> \
	426	# [itcl::code $this Pick %x %y]
[2504]	427
	428	# Bindings for panning via keyboard
	429	bind $itk_component(view) <KeyPress-Left> \
	430	[itcl::code $this Pan set -10 0]
	431	bind $itk_component(view) <KeyPress-Right> \
	432	[itcl::code $this Pan set 10 0]
	433	bind $itk_component(view) <KeyPress-Up> \
	434	[itcl::code $this Pan set 0 -10]
	435	bind $itk_component(view) <KeyPress-Down> \
	436	[itcl::code $this Pan set 0 10]
	437	bind $itk_component(view) <Shift-KeyPress-Left> \
	438	[itcl::code $this Pan set -2 0]
	439	bind $itk_component(view) <Shift-KeyPress-Right> \
	440	[itcl::code $this Pan set 2 0]
	441	bind $itk_component(view) <Shift-KeyPress-Up> \
	442	[itcl::code $this Pan set 0 -2]
	443	bind $itk_component(view) <Shift-KeyPress-Down> \
	444	[itcl::code $this Pan set 0 2]
	445
	446	# Bindings for zoom via keyboard
	447	bind $itk_component(view) <KeyPress-Prior> \
	448	[itcl::code $this Zoom out]
	449	bind $itk_component(view) <KeyPress-Next> \
	450	[itcl::code $this Zoom in]
	451
	452	bind $itk_component(view) <Enter> "focus $itk_component(view)"
	453
	454	if {[string equal "x11" [tk windowingsystem]]} {
	455	# Bindings for zoom via mouse
	456	bind $itk_component(view) <4> [itcl::code $this Zoom out]
	457	bind $itk_component(view) <5> [itcl::code $this Zoom in]
	458	}
	459
	460	set _image(download) [image create photo]
	461
	462	eval itk_initialize $args
	463	Connect
[2587]	464	update
[2504]	465	}
	466
	467	# ----------------------------------------------------------------------
	468	# DESTRUCTOR
	469	# ----------------------------------------------------------------------
	470	itcl::body Rappture::VtkStreamlinesViewer::destructor {} {
	471	Disconnect
	472	image delete $_image(plot)
	473	image delete $_image(download)
	474	catch { blt::arcball destroy $_arcball }
	475	}
	476
	477	itcl::body Rappture::VtkStreamlinesViewer::DoResize {} {
	478	if { $_width < 2 } {
[2744]	479	set _width 500
[2504]	480	}
	481	if { $_height < 2 } {
[2744]	482	set _height 500
[2504]	483	}
	484	set _start [clock clicks -milliseconds]
	485	SendCmd "screen size $_width $_height"
[3438]	486
[2673]	487	set _legendPending 1
[2504]	488	set _resizePending 0
	489	}
	490
	491	itcl::body Rappture::VtkStreamlinesViewer::DoRotate {} {
	492	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	493	SendCmd "camera orient $q"
	494	set _rotatePending 0
	495	}
	496
[2600]	497	itcl::body Rappture::VtkStreamlinesViewer::DoReseed {} {
	498	foreach dataset [CurrentDatasets -visible] {
[2744]	499	foreach {dataobj comp} [split $dataset -] break
	500	# This command works for either random or fmesh seeds
	501	SendCmd "streamlines seed numpts $_numSeeds $dataset"
[2600]	502	}
	503	set _reseedPending 0
	504	}
	505
[2504]	506	itcl::body Rappture::VtkStreamlinesViewer::EventuallyResize { w h } {
	507	set _width $w
	508	set _height $h
	509	$_arcball resize $w $h
	510	if { !$_resizePending } {
	511	set _resizePending 1
[2600]	512	$_dispatcher event -after 400 !resize
[2504]	513	}
	514	}
	515
[2600]	516	itcl::body Rappture::VtkStreamlinesViewer::EventuallyReseed { numPoints } {
	517	set _numSeeds $numPoints
	518	if { !$_reseedPending } {
	519	set _reseedPending 1
	520	$_dispatcher event -after 600 !reseed
	521	}
	522	}
	523
[2504]	524	set rotate_delay 100
	525
	526	itcl::body Rappture::VtkStreamlinesViewer::EventuallyRotate { q } {
	527	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
	528	if { !$_rotatePending } {
	529	set _rotatePending 1
[2744]	530	global rotate_delay
[2504]	531	$_dispatcher event -after $rotate_delay !rotate
	532	}
	533	}
	534
[2584]	535	itcl::body Rappture::VtkStreamlinesViewer::EventuallySetCutplane { axis args } {
	536	if { !$_cutplanePending } {
	537	set _cutplanePending 1
	538	$_dispatcher event -after 100 !${axis}cutplane
	539	}
	540	}
	541
[2504]	542	# ----------------------------------------------------------------------
	543	# USAGE: add <dataobj> ?<settings>?
	544	#
	545	# Clients use this to add a data object to the plot. The optional
	546	# <settings> are used to configure the plot. Allowed settings are
	547	# -color, -brightness, -width, -linestyle, and -raise.
	548	# ----------------------------------------------------------------------
	549	itcl::body Rappture::VtkStreamlinesViewer::add {dataobj {settings ""}} {
	550	array set params {
	551	-color auto
	552	-width 1
	553	-linestyle solid
	554	-brightness 0
	555	-raise 0
	556	-description ""
	557	-param ""
[2744]	558	-type ""
[2504]	559	}
	560	array set params $settings
	561	set params(-description) ""
	562	set params(-param) ""
	563	foreach {opt val} $settings {
	564	if {![info exists params($opt)]} {
	565	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
	566	}
	567	set params($opt) $val
	568	}
	569	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
	570	# can't handle -autocolors yet
	571	set params(-color) black
	572	}
	573	set pos [lsearch -exact $dataobj $_dlist]
	574	if {$pos < 0} {
[2744]	575	lappend _dlist $dataobj
[2504]	576	}
	577	set _obj2ovride($dataobj-color) $params(-color)
	578	set _obj2ovride($dataobj-width) $params(-width)
	579	set _obj2ovride($dataobj-raise) $params(-raise)
	580	$_dispatcher event -idle !rebuild
	581	}
	582
	583
	584	# ----------------------------------------------------------------------
	585	# USAGE: delete ?<dataobj1> <dataobj2> ...?
	586	#
	587	# Clients use this to delete a dataobj from the plot. If no dataobjs
	588	# are specified, then all dataobjs are deleted. No data objects are
	589	# deleted. They are only removed from the display list.
	590	#
	591	# ----------------------------------------------------------------------
	592	itcl::body Rappture::VtkStreamlinesViewer::delete {args} {
	593	if { [llength $args] == 0} {
	594	set args $_dlist
	595	}
	596	# Delete all specified dataobjs
	597	set changed 0
	598	foreach dataobj $args {
	599	set pos [lsearch -exact $_dlist $dataobj]
[2744]	600	if { $pos < 0 } {
	601	continue; # Don't know anything about it.
	602	}
	603	# Remove it from the dataobj list.
	604	set _dlist [lreplace $_dlist $pos $pos]
	605	array unset _obj2ovride $dataobj-*
	606	array unset _settings $dataobj-*
	607	# Append to the end of the dataobj list.
	608	lappend _dlist $dataobj
	609	set changed 1
[2504]	610	}
	611	# If anything changed, then rebuild the plot
	612	if { $changed } {
	613	$_dispatcher event -idle !rebuild
	614	}
	615	}
	616
	617	# ----------------------------------------------------------------------
	618	# USAGE: get ?-objects?
	619	# USAGE: get ?-visible?
	620	# USAGE: get ?-image view?
	621	#
	622	# Clients use this to query the list of objects being plotted, in
	623	# order from bottom to top of this result. The optional "-image"
	624	# flag can also request the internal images being shown.
	625	# ----------------------------------------------------------------------
	626	itcl::body Rappture::VtkStreamlinesViewer::get {args} {
	627	if {[llength $args] == 0} {
	628	set args "-objects"
	629	}
	630
	631	set op [lindex $args 0]
	632	switch -- $op {
[2744]	633	"-objects" {
	634	# put the dataobj list in order according to -raise options
	635	set dlist {}
	636	foreach dataobj $_dlist {
	637	if { ![IsValidObject $dataobj] } {
	638	continue
	639	}
	640	if {[info exists _obj2ovride($dataobj-raise)] &&
	641	$_obj2ovride($dataobj-raise)} {
	642	set dlist [linsert $dlist 0 $dataobj]
	643	} else {
	644	lappend dlist $dataobj
	645	}
	646	}
	647	return $dlist
	648	}
	649	"-visible" {
	650	set dlist {}
	651	foreach dataobj $_dlist {
	652	if { ![IsValidObject $dataobj] } {
	653	continue
	654	}
	655	if { ![info exists _obj2ovride($dataobj-raise)] } {
	656	# No setting indicates that the object isn't visible.
	657	continue
	658	}
	659	# Otherwise use the -raise parameter to put the object to
	660	# the front of the list.
	661	if { $_obj2ovride($dataobj-raise) } {
	662	set dlist [linsert $dlist 0 $dataobj]
	663	} else {
	664	lappend dlist $dataobj
	665	}
	666	}
	667	return $dlist
	668	}
	669	-image {
	670	if {[llength $args] != 2} {
	671	error "wrong # args: should be \"get -image view\""
	672	}
	673	switch -- [lindex $args end] {
	674	view {
	675	return $_image(plot)
	676	}
	677	default {
	678	error "bad image name \"[lindex $args end]\": should be view"
	679	}
	680	}
	681	}
	682	default {
	683	error "bad option \"$op\": should be -objects or -image"
	684	}
[2504]	685	}
	686	}
	687
	688	# ----------------------------------------------------------------------
	689	# USAGE: scale ?<data1> <data2> ...?
	690	#
	691	# Sets the default limits for the overall plot according to the
	692	# limits of the data for all of the given <data> objects. This
	693	# accounts for all objects--even those not showing on the screen.
	694	# Because of this, the limits are appropriate for all objects as
	695	# the user scans through data in the ResultSet viewer.
	696	# ----------------------------------------------------------------------
	697	itcl::body Rappture::VtkStreamlinesViewer::scale {args} {
	698	foreach dataobj $args {
[3431]	699	foreach axis { x y z } {
	700	set lim [$dataobj limits $axis]
	701	if { ![info exists _limits($axis)] } {
	702	set _limits($axis) $lim
	703	continue
	704	}
	705	foreach {min max} $lim break
	706	foreach {amin amax} $_limits($axis) break
	707	if { $amin > $min } {
	708	set amin $min
	709	}
	710	if { $amax < $max } {
	711	set amax $max
	712	}
	713	set _limits($axis) [list $amin $amax]
[2744]	714	}
[3431]	715	foreach { fname lim } [$dataobj fieldlimits] {
	716	if { ![info exists _limits($fname)] } {
	717	set _limits($fname) $lim
	718	continue
	719	}
	720	foreach {min max} $lim break
	721	foreach {fmin fmax} $_limits($fname) break
	722	if { $fmin > $min } {
	723	set fmin $min
	724	}
	725	if { $fmax < $max } {
	726	set fmax $max
	727	}
	728	set _limits($fname) [list $fmin $fmax]
[2744]	729	}
[2504]	730	}
	731	}
	732
	733	# ----------------------------------------------------------------------
	734	# USAGE: download coming
	735	# USAGE: download controls <downloadCommand>
	736	# USAGE: download now
	737	#
	738	# Clients use this method to create a downloadable representation
	739	# of the plot. Returns a list of the form {ext string}, where
	740	# "ext" is the file extension (indicating the type of data) and
	741	# "string" is the data itself.
	742	# ----------------------------------------------------------------------
	743	itcl::body Rappture::VtkStreamlinesViewer::download {option args} {
	744	switch $option {
	745	coming {
	746	if {[catch {
	747	blt::winop snap $itk_component(plotarea) $_image(download)
	748	}]} {
	749	$_image(download) configure -width 1 -height 1
	750	$_image(download) put #000000
	751	}
	752	}
	753	controls {
	754	set popup .vtkviewerdownload
	755	if { ![winfo exists .vtkviewerdownload] } {
	756	set inner [BuildDownloadPopup $popup [lindex $args 0]]
	757	} else {
	758	set inner [$popup component inner]
	759	}
	760	set _downloadPopup(image_controls) $inner.image_frame
	761	set num [llength [get]]
	762	set num [expr {($num == 1) ? "1 result" : "$num results"}]
	763	set word [Rappture::filexfer::label downloadWord]
	764	$inner.summary configure -text "$word $num in the following format:"
[2744]	765	update idletasks ;# Fix initial sizes
[2504]	766	return $popup
	767	}
	768	now {
	769	set popup .vtkviewerdownload
	770	if {[winfo exists .vtkviewerdownload]} {
	771	$popup deactivate
	772	}
	773	switch -- $_downloadPopup(format) {
	774	"image" {
	775	return [$this GetImage [lindex $args 0]]
	776	}
	777	"vtk" {
	778	return [$this GetVtkData [lindex $args 0]]
	779	}
	780	}
	781	return ""
	782	}
	783	default {
	784	error "bad option \"$option\": should be coming, controls, now"
	785	}
	786	}
	787	}
	788
	789	# ----------------------------------------------------------------------
	790	# USAGE: Connect ?<host:port>,<host:port>...?
	791	#
	792	# Clients use this method to establish a connection to a new
	793	# server, or to reestablish a connection to the previous server.
	794	# Any existing connection is automatically closed.
	795	# ----------------------------------------------------------------------
	796	itcl::body Rappture::VtkStreamlinesViewer::Connect {} {
	797	set _hosts [GetServerList "vtkvis"]
	798	if { "" == $_hosts } {
	799	return 0
	800	}
	801	set result [VisViewer::Connect $_hosts]
	802	if { $result } {
	803	set w [winfo width $itk_component(view)]
	804	set h [winfo height $itk_component(view)]
	805	EventuallyResize $w $h
	806	}
	807	return $result
	808	}
	809
	810	#
	811	# isconnected --
	812	#
	813	# Indicates if we are currently connected to the visualization server.
	814	#
	815	itcl::body Rappture::VtkStreamlinesViewer::isconnected {} {
	816	return [VisViewer::IsConnected]
	817	}
	818
	819	#
	820	# disconnect --
	821	#
	822	itcl::body Rappture::VtkStreamlinesViewer::disconnect {} {
	823	Disconnect
	824	set _reset 1
	825	}
	826
	827	#
	828	# Disconnect --
	829	#
	830	# Clients use this method to disconnect from the current rendering
	831	# server.
	832	#
	833	itcl::body Rappture::VtkStreamlinesViewer::Disconnect {} {
	834	VisViewer::Disconnect
	835
[2652]	836	$_dispatcher cancel !rebuild
	837	$_dispatcher cancel !resize
	838	$_dispatcher cancel !reseed
	839	$_dispatcher cancel !rotate
	840	$_dispatcher cancel !xcutplane
	841	$_dispatcher cancel !ycutplane
	842	$_dispatcher cancel !zcutplane
	843	$_dispatcher cancel !legend
[2504]	844	# disconnected -- no more data sitting on server
	845	array unset _datasets
	846	array unset _data
	847	array unset _colormaps
[2611]	848	array unset _seeds
	849	array unset _dataset2style
	850	array unset _obj2datasets
[2504]	851	}
	852
	853	# ----------------------------------------------------------------------
	854	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
	855	#
	856	# Invoked automatically whenever the "image" command comes in from
	857	# the rendering server. Indicates that binary image data with the
	858	# specified <size> will follow.
	859	# ----------------------------------------------------------------------
	860	itcl::body Rappture::VtkStreamlinesViewer::ReceiveImage { args } {
	861	array set info {
	862	-token "???"
	863	-bytes 0
	864	-type image
	865	}
	866	array set info $args
	867	set bytes [ReceiveBytes $info(-bytes)]
	868	if { $info(-type) == "image" } {
[2744]	869	if 0 {
	870	set f [open "last.ppm" "w"]
	871	puts $f $bytes
	872	close $f
	873	}
[2504]	874	$_image(plot) configure -data $bytes
[2744]	875	set time [clock seconds]
	876	set date [clock format $time]
[2504]	877	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
[2744]	878	if { $_start > 0 } {
	879	set finish [clock clicks -milliseconds]
	880	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
	881	set _start 0
	882	}
[2504]	883	} elseif { $info(type) == "print" } {
	884	set tag $this-print-$info(-token)
	885	set _hardcopy($tag) $bytes
	886	}
[2652]	887	if { $_legendPending } {
[2744]	888	RequestLegend
[2652]	889	}
[2504]	890	}
	891
	892	#
	893	# ReceiveDataset --
	894	#
	895	itcl::body Rappture::VtkStreamlinesViewer::ReceiveDataset { args } {
	896	if { ![isconnected] } {
	897	return
	898	}
	899	set option [lindex $args 0]
	900	switch -- $option {
[2744]	901	"scalar" {
	902	set option [lindex $args 1]
	903	switch -- $option {
	904	"world" {
	905	foreach { x y z value tag } [lrange $args 2 end] break
	906	}
	907	"pixel" {
	908	foreach { x y value tag } [lrange $args 2 end] break
	909	}
	910	}
	911	}
	912	"vector" {
	913	set option [lindex $args 1]
	914	switch -- $option {
	915	"world" {
	916	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
	917	}
	918	"pixel" {
	919	foreach { x y vx vy vz tag } [lrange $args 2 end] break
	920	}
	921	}
	922	}
	923	"names" {
[2504]	924	foreach { name } [lindex $args 1] {
	925	#puts stderr "Dataset: $name"
	926	}
[2744]	927	}
	928	default {
	929	error "unknown dataset option \"$option\" from server"
	930	}
[2504]	931	}
	932	}
	933
	934	# ----------------------------------------------------------------------
	935	# USAGE: Rebuild
	936	#
	937	# Called automatically whenever something changes that affects the
	938	# data in the widget. Clears any existing data and rebuilds the
	939	# widget to display new data.
	940	# ----------------------------------------------------------------------
	941	itcl::body Rappture::VtkStreamlinesViewer::Rebuild {} {
[2585]	942	update
[2504]	943	set w [winfo width $itk_component(view)]
	944	set h [winfo height $itk_component(view)]
	945	if { $w < 2 \|\| $h < 2 } {
[2744]	946	$_dispatcher event -idle !rebuild
	947	return
[2504]	948	}
	949
	950	# Turn on buffering of commands to the server. We don't want to
	951	# be preempted by a server disconnect/reconnect (which automatically
[3418]	952	# generates a new call to Rebuild).
[3421]	953	StartBufferingCommands
	954	set _legendPending 1
[3330]	955
	956	set _first ""
	957	if { $_reset } {
[3421]	958	if { $_reportClientInfo } {
[3392]	959	# Tell the server the name of the tool, the version, and dataset
	960	# that we are rendering. Have to do it here because we don't know
	961	# what data objects are using the renderer until be get here.
	962	global env
	963
	964	set info {}
	965	set user "???"
	966	if { [info exists env(USER)] } {
	967	set user $env(USER)
	968	}
	969	set session "???"
	970	if { [info exists env(SESSION)] } {
	971	set session $env(SESSION)
	972	}
	973	lappend info "hub" [exec hostname]
	974	lappend info "client" "vtkstreamlinesviewer"
	975	lappend info "user" $user
	976	lappend info "session" $session
	977	SendCmd "clientinfo [list $info]"
	978	}
[3330]	979	set _width $w
	980	set _height $h
	981	$_arcball resize $w $h
	982	DoResize
	983	InitSettings axisXGrid axisYGrid axisZGrid axis-mode \
[3400]	984	axesVisible axisLabelsVisible
	985	# This "imgflush" is to force an image returned before vtkvis starts
	986	# reading a (big) dataset. This will display an empty plot with axes
	987	# at the correct image size.
	988	SendCmd "imgflush"
[2504]	989	}
	990
	991	set _first ""
[3400]	992	SendCmd "dataset visible 0"
[2504]	993	foreach dataobj [get -objects] {
[2744]	994	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
	995	set _first $dataobj
	996	}
	997	set _obj2datasets($dataobj) ""
[2504]	998	foreach comp [$dataobj components] {
	999	set tag $dataobj-$comp
	1000	if { ![info exists _datasets($tag)] } {
[3330]	1001	set bytes [$dataobj vtkdata $comp]
[2504]	1002	set length [string length $bytes]
[3421]	1003	if 0 {
[3405]	1004	set f [open /tmp/vtkstreamlines.vtk "w"]
	1005	fconfigure $f -translation binary -encoding binary
	1006	puts $f $bytes
	1007	close $f
	1008	}
[3421]	1009	if { $_reportClientInfo } {
[3392]	1010	set info {}
	1011	lappend info "tool_id" [$dataobj hints toolId]
	1012	lappend info "tool_name" [$dataobj hints toolName]
	1013	lappend info "tool_version" [$dataobj hints toolRevision]
	1014	lappend info "tool_title" [$dataobj hints toolTitle]
	1015	lappend info "dataset_label" [$dataobj hints label]
	1016	lappend info "dataset_size" $length
[3394]	1017	lappend info "dataset_tag" $tag
[3392]	1018	SendCmd "clientinfo [list $info]"
	1019	}
[3421]	1020	SendCmd "dataset add $tag data follows $length"
[2504]	1021	append _outbuf $bytes
	1022	set _datasets($tag) 1
[2744]	1023	SetObjectStyle $dataobj $comp
	1024	}
	1025	lappend _obj2datasets($dataobj) $tag
	1026	if { [info exists _obj2ovride($dataobj-raise)] } {
	1027	SendCmd "dataset visible 1 $tag"
	1028	}
[2504]	1029	}
	1030	}
	1031	if {"" != $_first} {
	1032	set location [$_first hints camera]
	1033	if { $location != "" } {
	1034	array set view $location
	1035	}
[2744]	1036	foreach axis { x y z } {
	1037	set label [$_first hints ${axis}label]
	1038	if { $label != "" } {
	1039	SendCmd "axis name $axis $label"
	1040	}
	1041	set units [$_first hints ${axis}units]
	1042	if { $units != "" } {
	1043	SendCmd "axis units $axis $units"
	1044	}
	1045	}
[3405]	1046	$itk_component(field) choices delete 0 end
	1047	$itk_component(fieldmenu) delete 0 end
	1048	array unset _fields
[3421]	1049	set _curFldName ""
[3405]	1050	foreach cname [$_first components] {
	1051	foreach fname [$_first fieldnames $cname] {
	1052	if { [info exists _fields($fname)] } {
	1053	continue
	1054	}
	1055	foreach { label units components } \
	1056	[$_first fieldinfo $fname] break
	1057	$itk_component(field) choices insert end "$fname" "$label"
	1058	$itk_component(fieldmenu) add radiobutton -label "$label" \
	1059	-value $label -variable [itcl::scope _curFldLabel] \
	1060	-selectcolor red \
	1061	-activebackground $itk_option(-plotbackground) \
	1062	-activeforeground $itk_option(-plotforeground) \
	1063	-font "Arial 8" \
	1064	-command [itcl::code $this Combo invoke]
	1065	set _fields($fname) [list $label $units $components]
[3421]	1066	if { $_curFldName == "" } {
	1067	set _curFldName $fname
	1068	set _curFldLabel $label
	1069	}
[3405]	1070	}
	1071	}
	1072	$itk_component(field) value $_curFldLabel
[2504]	1073	}
[2601]	1074
[2605]	1075	if { $_reset } {
[3330]	1076	InitSettings streamlinesSeedsVisible streamlinesOpacity \
[3442]	1077	streamlinesVisible streamlinesColormap \
[3400]	1078	streamlinesLighting \
[3442]	1079	streamlinesColormap field \
[3400]	1080	volumeVisible volumeEdges volumeLighting volumeOpacity \
	1081	volumeWireframe \
[3330]	1082	cutplaneVisible \
	1083	cutplaneXPosition cutplaneYPosition cutplaneZPosition \
	1084	cutplaneXVisible cutplaneYVisible cutplaneZVisible
[3400]	1085
	1086	# FIXME: Don't know exactly why this "imgflush" is needed.
[3421]	1087	# But this makes the "camera reset" below to work correctly.
	1088	# I left this in because the axis labels are scaled too big.
[3400]	1089	SendCmd "imgflush"
	1090
[3330]	1091	# Reset the camera and other view parameters
	1092	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1093	$_arcball quaternion $q
	1094	if {$_view(ortho)} {
	1095	SendCmd "camera mode ortho"
	1096	} else {
	1097	SendCmd "camera mode persp"
	1098	}
	1099	DoRotate
	1100	PanCamera
[2744]	1101	Zoom reset
[3394]	1102	SendCmd "camera reset"
[2744]	1103	set _reset 0
[2592]	1104	}
[2504]	1105	# Actually write the commands to the server socket. If it fails, we don't
	1106	# care. We're finished here.
	1107	blt::busy hold $itk_component(hull)
[3421]	1108	StopBufferingCommands
[2504]	1109	blt::busy release $itk_component(hull)
	1110	}
	1111
	1112	# ----------------------------------------------------------------------
	1113	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
	1114	#
	1115	# Returns a list of server IDs for the current datasets being displayed. This
	1116	# is normally a single ID, but it might be a list of IDs if the current data
	1117	# object has multiple components.
	1118	# ----------------------------------------------------------------------
	1119	itcl::body Rappture::VtkStreamlinesViewer::CurrentDatasets {args} {
	1120	set flag [lindex $args 0]
	1121	switch -- $flag {
[2744]	1122	"-all" {
	1123	if { [llength $args] > 1 } {
	1124	error "CurrentDatasets: can't specify dataobj after \"-all\""
	1125	}
	1126	set dlist [get -objects]
	1127	}
	1128	"-visible" {
	1129	if { [llength $args] > 1 } {
	1130	set dlist {}
	1131	set args [lrange $args 1 end]
	1132	foreach dataobj $args {
	1133	if { [info exists _obj2ovride($dataobj-raise)] } {
	1134	lappend dlist $dataobj
	1135	}
	1136	}
	1137	} else {
	1138	set dlist [get -visible]
	1139	}
	1140	}
	1141	default {
	1142	set dlist $args
	1143	}
[2504]	1144	}
	1145	set rlist ""
	1146	foreach dataobj $dlist {
[2744]	1147	foreach comp [$dataobj components] {
	1148	set tag $dataobj-$comp
	1149	if { [info exists _datasets($tag)] && $_datasets($tag) } {
	1150	lappend rlist $tag
	1151	}
	1152	}
[2504]	1153	}
	1154	return $rlist
	1155	}
	1156
	1157	# ----------------------------------------------------------------------
	1158	# USAGE: Zoom in
	1159	# USAGE: Zoom out
	1160	# USAGE: Zoom reset
	1161	#
	1162	# Called automatically when the user clicks on one of the zoom
	1163	# controls for this widget. Changes the zoom for the current view.
	1164	# ----------------------------------------------------------------------
	1165	itcl::body Rappture::VtkStreamlinesViewer::Zoom {option} {
	1166	switch -- $option {
	1167	"in" {
	1168	set _view(zoom) [expr {$_view(zoom)*1.25}]
[2744]	1169	SendCmd "camera zoom $_view(zoom)"
[2504]	1170	}
	1171	"out" {
	1172	set _view(zoom) [expr {$_view(zoom)*0.8}]
[2744]	1173	SendCmd "camera zoom $_view(zoom)"
[2504]	1174	}
	1175	"reset" {
	1176	array set _view {
[3482]	1177	qw 0.853553
	1178	qx -0.353553
	1179	qy 0.353553
	1180	qz 0.146447
[2504]	1181	zoom 1.0
[3482]	1182	xpan 0
	1183	ypan 0
[2504]	1184	}
	1185	SendCmd "camera reset all"
	1186	if { $_first != "" } {
	1187	set location [$_first hints camera]
	1188	if { $location != "" } {
	1189	array set _view $location
	1190	}
	1191	}
[2744]	1192	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1193	$_arcball quaternion $q
	1194	DoRotate
[2504]	1195	}
	1196	}
	1197	}
	1198
	1199	itcl::body Rappture::VtkStreamlinesViewer::PanCamera {} {
	1200	set x $_view(xpan)
	1201	set y $_view(ypan)
	1202	SendCmd "camera pan $x $y"
	1203	}
	1204
	1205
	1206	# ----------------------------------------------------------------------
	1207	# USAGE: Rotate click <x> <y>
	1208	# USAGE: Rotate drag <x> <y>
	1209	# USAGE: Rotate release <x> <y>
	1210	#
	1211	# Called automatically when the user clicks/drags/releases in the
	1212	# plot area. Moves the plot according to the user's actions.
	1213	# ----------------------------------------------------------------------
	1214	itcl::body Rappture::VtkStreamlinesViewer::Rotate {option x y} {
	1215	switch -- $option {
	1216	"click" {
	1217	$itk_component(view) configure -cursor fleur
	1218	set _click(x) $x
	1219	set _click(y) $y
	1220	}
	1221	"drag" {
	1222	if {[array size _click] == 0} {
	1223	Rotate click $x $y
	1224	} else {
	1225	set w [winfo width $itk_component(view)]
	1226	set h [winfo height $itk_component(view)]
	1227	if {$w <= 0 \|\| $h <= 0} {
	1228	return
	1229	}
	1230
	1231	if {[catch {
	1232	# this fails sometimes for no apparent reason
	1233	set dx [expr {double($x-$_click(x))/$w}]
	1234	set dy [expr {double($y-$_click(y))/$h}]
	1235	}]} {
	1236	return
	1237	}
[2744]	1238	if { $dx == 0 && $dy == 0 } {
	1239	return
	1240	}
	1241	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
	1242	EventuallyRotate $q
[2504]	1243	set _click(x) $x
	1244	set _click(y) $y
	1245	}
	1246	}
	1247	"release" {
	1248	Rotate drag $x $y
	1249	$itk_component(view) configure -cursor ""
	1250	catch {unset _click}
	1251	}
	1252	default {
	1253	error "bad option \"$option\": should be click, drag, release"
	1254	}
	1255	}
	1256	}
	1257
	1258	itcl::body Rappture::VtkStreamlinesViewer::Pick {x y} {
	1259	foreach tag [CurrentDatasets -visible] {
[3421]	1260	SendCmdNoWait "dataset getscalar pixel $x $y $tag"
[2504]	1261	}
	1262	}
	1263
	1264	# ----------------------------------------------------------------------
	1265	# USAGE: $this Pan click x y
	1266	# $this Pan drag x y
	1267	# $this Pan release x y
	1268	#
	1269	# Called automatically when the user clicks on one of the zoom
	1270	# controls for this widget. Changes the zoom for the current view.
	1271	# ----------------------------------------------------------------------
	1272	itcl::body Rappture::VtkStreamlinesViewer::Pan {option x y} {
	1273	switch -- $option {
[2744]	1274	"set" {
	1275	set w [winfo width $itk_component(view)]
	1276	set h [winfo height $itk_component(view)]
	1277	set x [expr $x / double($w)]
	1278	set y [expr $y / double($h)]
	1279	set _view(xpan) [expr $_view(xpan) + $x]
	1280	set _view(ypan) [expr $_view(ypan) + $y]
	1281	PanCamera
	1282	return
	1283	}
	1284	"click" {
	1285	set _click(x) $x
	1286	set _click(y) $y
	1287	$itk_component(view) configure -cursor hand1
	1288	}
	1289	"drag" {
	1290	if { ![info exists _click(x)] } {
	1291	set _click(x) $x
	1292	}
	1293	if { ![info exists _click(y)] } {
	1294	set _click(y) $y
	1295	}
	1296	set w [winfo width $itk_component(view)]
	1297	set h [winfo height $itk_component(view)]
	1298	set dx [expr ($_click(x) - $x)/double($w)]
	1299	set dy [expr ($_click(y) - $y)/double($h)]
	1300	set _click(x) $x
	1301	set _click(y) $y
	1302	set _view(xpan) [expr $_view(xpan) - $dx]
	1303	set _view(ypan) [expr $_view(ypan) - $dy]
	1304	PanCamera
	1305	}
	1306	"release" {
	1307	Pan drag $x $y
	1308	$itk_component(view) configure -cursor ""
	1309	}
	1310	default {
	1311	error "unknown option \"$option\": should set, click, drag, or release"
	1312	}
[2504]	1313	}
	1314	}
	1315
	1316	# ----------------------------------------------------------------------
[2600]	1317	# USAGE: InitSettings <what> ?<value>?
[2504]	1318	#
	1319	# Used internally to update rendering settings whenever parameters
	1320	# change in the popup settings panel. Sends the new settings off
	1321	# to the back end.
	1322	# ----------------------------------------------------------------------
[2600]	1323	itcl::body Rappture::VtkStreamlinesViewer::InitSettings { args } {
	1324	foreach spec $args {
[2744]	1325	if { [info exists _settings($_first-$spec)] } {
	1326	# Reset global setting with dataobj specific setting
	1327	set _settings($spec) $_settings($_first-$spec)
	1328	}
	1329	AdjustSetting $spec
[2504]	1330	}
	1331	}
	1332
	1333	#
	1334	# AdjustSetting --
	1335	#
[2744]	1336	# Changes/updates a specific setting in the widget. There are
	1337	# usually user-setable option. Commands are sent to the render
	1338	# server.
[2504]	1339	#
	1340	itcl::body Rappture::VtkStreamlinesViewer::AdjustSetting {what {value ""}} {
	1341	if { ![isconnected] } {
[2744]	1342	return
[2504]	1343	}
	1344	switch -- $what {
[3330]	1345	"volumeOpacity" {
	1346	set val $_settings(volumeOpacity)
[2744]	1347	set sval [expr { 0.01 * double($val) }]
[3400]	1348	SendCmd "polydata opacity $sval"
[2504]	1349	}
[3330]	1350	"volumeWireframe" {
	1351	set bool $_settings(volumeWireframe)
[3400]	1352	SendCmd "polydata wireframe $bool"
[2504]	1353	}
[3330]	1354	"volumeVisible" {
	1355	set bool $_settings(volumeVisible)
[3400]	1356	SendCmd "polydata visible $bool"
[2744]	1357	if { $bool } {
	1358	Rappture::Tooltip::for $itk_component(volume) \
	1359	"Hide the volume"
	1360	} else {
	1361	Rappture::Tooltip::for $itk_component(volume) \
	1362	"Show the volume"
	1363	}
[2504]	1364	}
[3330]	1365	"volumeLighting" {
	1366	set bool $_settings(volumeLighting)
[3400]	1367	SendCmd "polydata lighting $bool"
[2504]	1368	}
[3330]	1369	"volumeEdges" {
	1370	set bool $_settings(volumeEdges)
[3400]	1371	SendCmd "polydata edges $bool"
[2504]	1372	}
[3330]	1373	"axesVisible" {
	1374	set bool $_settings(axesVisible)
[2744]	1375	SendCmd "axis visible all $bool"
[2504]	1376	}
[3330]	1377	"axisLabelsVisible" {
	1378	set bool $_settings(axisLabelsVisible)
[2744]	1379	SendCmd "axis labels all $bool"
[2504]	1380	}
[3330]	1381	"axisXGrid" - "axisYGrid" - "axisZGrid" {
	1382	set axis [string tolower [string range $what 4 4]]
[2744]	1383	set bool $_settings($what)
	1384	SendCmd "axis grid $axis $bool"
[2504]	1385	}
	1386	"axis-mode" {
[2744]	1387	set mode [$itk_component(axismode) value]
	1388	set mode [$itk_component(axismode) translate $mode]
	1389	set _settings($what) $mode
	1390	SendCmd "axis flymode $mode"
[2504]	1391	}
[3330]	1392	"cutplaneEdges" {
[2744]	1393	set bool $_settings($what)
[3400]	1394	SendCmd "cutplane edges $bool"
[2587]	1395	}
[3330]	1396	"cutplaneVisible" {
[2744]	1397	set bool $_settings($what)
[3400]	1398	SendCmd "cutplane visible $bool"
[2587]	1399	}
[3330]	1400	"cutplaneWireframe" {
[2744]	1401	set bool $_settings($what)
[3400]	1402	SendCmd "cutplane wireframe $bool"
[2587]	1403	}
[3330]	1404	"cutplaneLighting" {
[2744]	1405	set bool $_settings($what)
[3400]	1406	SendCmd "cutplane lighting $bool"
[2587]	1407	}
[3330]	1408	"cutplaneOpacity" {
[2744]	1409	set val $_settings($what)
	1410	set sval [expr { 0.01 * double($val) }]
[3400]	1411	SendCmd "cutplane opacity $sval"
[2587]	1412	}
[3330]	1413	"cutplaneXVisible" - "cutplaneYVisible" - "cutplaneZVisible" {
	1414	set axis [string tolower [string range $what 8 8]]
[2744]	1415	set bool $_settings($what)
[2504]	1416	if { $bool } {
	1417	$itk_component(${axis}CutScale) configure -state normal \
	1418	-troughcolor white
	1419	} else {
	1420	$itk_component(${axis}CutScale) configure -state disabled \
	1421	-troughcolor grey82
	1422	}
[3400]	1423	SendCmd "cutplane axis $axis $bool"
[2744]	1424	}
[3330]	1425	"cutplaneXPosition" - "cutplaneYPosition" - "cutplaneZPosition" {
	1426	set axis [string tolower [string range $what 8 8]]
[2744]	1427	set pos [expr $_settings($what) * 0.01]
[3400]	1428	SendCmd "cutplane slice ${axis} ${pos}"
[2744]	1429	set _cutplanePending 0
	1430	}
[3330]	1431	"streamlinesSeedsVisible" {
[2744]	1432	set bool $_settings($what)
[3400]	1433	SendCmd "streamlines seed visible $bool"
[2504]	1434	}
[3330]	1435	"streamlinesNumSeeds" {
[2744]	1436	set density $_settings($what)
	1437	EventuallyReseed $density
[2579]	1438	}
[3330]	1439	"streamlinesVisible" {
[2744]	1440	set bool $_settings($what)
[3400]	1441	SendCmd "streamlines visible $bool"
[2744]	1442	if { $bool } {
	1443	Rappture::Tooltip::for $itk_component(streamlines) \
	1444	"Hide the streamlines"
	1445	} else {
	1446	Rappture::Tooltip::for $itk_component(streamlines) \
	1447	"Show the streamlines"
	1448	}
[2504]	1449	}
[3330]	1450	"streamlinesMode" {
[2744]	1451	set mode [$itk_component(streammode) value]
[3330]	1452	set _settings(streamlinesMode) $mode
[3400]	1453	switch -- $mode {
	1454	"lines" {
	1455	SendCmd "streamlines lines"
[2744]	1456	}
[3400]	1457	"ribbons" {
	1458	SendCmd "streamlines ribbons 3 0"
	1459	}
	1460	"tubes" {
	1461	SendCmd "streamlines tubes 5 3"
	1462	}
[2504]	1463	}
	1464	}
[3442]	1465	"streamlinesColormap" {
	1466	set colormap [$itk_component(colormap) value]
	1467	set _settings(streamlinesColormap) $colormap
[2744]	1468	foreach dataset [CurrentDatasets -visible $_first] {
	1469	foreach {dataobj comp} [split $dataset -] break
[3442]	1470	ChangeColormap $dataobj $comp $colormap
[2586]	1471	}
[2744]	1472	set _legendPending 1
[2586]	1473	}
[3330]	1474	"streamlinesOpacity" {
	1475	set val $_settings(streamlinesOpacity)
[2744]	1476	set sval [expr { 0.01 * double($val) }]
[3400]	1477	SendCmd "streamlines opacity $sval"
[2504]	1478	}
[3330]	1479	"streamlinesScale" {
	1480	set val $_settings(streamlinesScale)
[2744]	1481	set sval [expr { 0.01 * double($val) }]
[3400]	1482	SendCmd "streamlines scale $sval $sval $sval"
[2579]	1483	}
[3330]	1484	"streamlinesLighting" {
	1485	set bool $_settings(streamlinesLighting)
[3400]	1486	SendCmd "streamlines lighting $bool"
[2579]	1487	}
[3421]	1488	"field" {
[3405]	1489	set label [$itk_component(field) value]
	1490	set fname [$itk_component(field) translate $label]
[3421]	1491	set _settings(field) $fname
[3405]	1492	if { [info exists _fields($fname)] } {
	1493	foreach { label units components } $_fields($fname) break
	1494	if { $components > 1 } {
	1495	set _colorMode vmag
	1496	} else {
	1497	set _colorMode scalar
	1498	}
	1499	set _curFldName $fname
	1500	set _curFldLabel $label
[2744]	1501	} else {
[3405]	1502	puts stderr "unknown field \"$fname\""
[2744]	1503	return
[2584]	1504	}
[3421]	1505	# Get the new limits because the field changed.
[3442]	1506	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
	1507	SendCmd "streamlines colormode $_colorMode $_curFldName"
	1508	SendCmd "cutplane colormode $_colorMode $_curFldName"
	1509	DrawLegend
[2584]	1510	}
[2504]	1511	default {
	1512	error "don't know how to fix $what"
	1513	}
	1514	}
	1515	}
	1516
	1517	#
	1518	# RequestLegend --
	1519	#
[2744]	1520	# Request a new legend from the server. The size of the legend
	1521	# is determined from the height of the canvas. It will be rotated
	1522	# to be vertical when drawn.
[2504]	1523	#
[2587]	1524	itcl::body Rappture::VtkStreamlinesViewer::RequestLegend {} {
[2504]	1525	set font "Arial 8"
	1526	set lineht [font metrics $font -linespace]
	1527	set c $itk_component(legend)
	1528	set w 12
[2584]	1529	set h [expr {$_height - 3 * ($lineht + 2)}]
[2504]	1530	if { $h < 1} {
[2744]	1531	return
[2504]	1532	}
	1533	# Set the legend on the first streamlines dataset.
[2600]	1534	foreach dataset [CurrentDatasets -visible $_first] {
[2744]	1535	foreach {dataobj comp} [split $dataset -] break
	1536	if { [info exists _dataset2style($dataset)] } {
[3421]	1537	SendCmdNoWait \
[3405]	1538	"legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
[2744]	1539	break;
[2504]	1540	}
	1541	}
	1542	}
	1543
	1544	#
[2586]	1545	# ChangeColormap --
	1546	#
	1547	itcl::body Rappture::VtkStreamlinesViewer::ChangeColormap {dataobj comp color} {
	1548	set tag $dataobj-$comp
[2587]	1549	if { ![info exist _style($tag)] } {
[2744]	1550	error "no initial colormap"
[2586]	1551	}
[2587]	1552	array set style $_style($tag)
	1553	set style(-color) $color
	1554	set _style($tag) [array get style]
[2586]	1555	SetColormap $dataobj $comp
	1556	}
	1557
	1558	#
[2504]	1559	# SetColormap --
	1560	#
	1561	itcl::body Rappture::VtkStreamlinesViewer::SetColormap { dataobj comp } {
	1562	array set style {
[2786]	1563	-color BCGYR
[2504]	1564	-levels 6
	1565	-opacity 1.0
	1566	}
	1567	set tag $dataobj-$comp
[2586]	1568	if { ![info exists _initialStyle($tag)] } {
[2744]	1569	# Save the initial component style.
	1570	set _initialStyle($tag) [$dataobj style $comp]
[2504]	1571	}
[2586]	1572
	1573	# Override defaults with initial style defined in xml.
	1574	array set style $_initialStyle($tag)
	1575
	1576	if { ![info exists _style($tag)] } {
[2744]	1577	set _style($tag) [array get style]
[2504]	1578	}
[2586]	1579	# Override initial style with current style.
	1580	array set style $_style($tag)
	1581
	1582	set name "$style(-color):$style(-levels):$style(-opacity)"
	1583	if { ![info exists _colormaps($name)] } {
[2744]	1584	BuildColormap $name [array get style]
	1585	set _colormaps($name) 1
[2504]	1586	}
[2586]	1587	if { ![info exists _dataset2style($tag)] \|\|
[2744]	1588	$_dataset2style($tag) != $name } {
	1589	SendCmd "streamlines colormap $name $tag"
	1590	SendCmd "cutplane colormap $name $tag"
	1591	set _dataset2style($tag) $name
[2586]	1592	}
[2504]	1593	}
	1594
[2585]	1595
	1596	#
	1597	# BuildColormap --
	1598	#
[2586]	1599	itcl::body Rappture::VtkStreamlinesViewer::BuildColormap { name styles } {
	1600	array set style $styles
	1601	set cmap [ColorsToColormap $style(-color)]
[2504]	1602	if { [llength $cmap] == 0 } {
[2744]	1603	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
[2504]	1604	}
[3330]	1605	if { ![info exists _settings(volumeOpacity)] } {
	1606	set _settings(volumeOpacity) $style(-opacity)
[2504]	1607	}
[3330]	1608	set max $_settings(volumeOpacity)
[2504]	1609
	1610	set wmap "0.0 1.0 1.0 1.0"
[2585]	1611	SendCmd "colormap add $name { $cmap } { $wmap }"
[2504]	1612	}
	1613
	1614	# ----------------------------------------------------------------------
	1615	# CONFIGURATION OPTION: -plotbackground
	1616	# ----------------------------------------------------------------------
	1617	itcl::configbody Rappture::VtkStreamlinesViewer::plotbackground {
	1618	if { [isconnected] } {
	1619	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
	1620	SendCmd "screen bgcolor $r $g $b"
	1621	}
	1622	}
	1623
	1624	# ----------------------------------------------------------------------
	1625	# CONFIGURATION OPTION: -plotforeground
	1626	# ----------------------------------------------------------------------
	1627	itcl::configbody Rappture::VtkStreamlinesViewer::plotforeground {
	1628	if { [isconnected] } {
	1629	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
	1630	#fix this!
	1631	#SendCmd "color background $r $g $b"
	1632	}
	1633	}
	1634
	1635	itcl::body Rappture::VtkStreamlinesViewer::BuildVolumeTab {} {
	1636
	1637	set fg [option get $itk_component(hull) font Font]
	1638	#set bfg [option get $itk_component(hull) boldFont Font]
	1639
	1640	set inner [$itk_component(main) insert end \
	1641	-title "Volume Settings" \
	1642	-icon [Rappture::icon volume-on]]
	1643	$inner configure -borderwidth 4
	1644
	1645	checkbutton $inner.volume \
	1646	-text "Show Volume" \
[3330]	1647	-variable [itcl::scope _settings(volumeVisible)] \
	1648	-command [itcl::code $this AdjustSetting volumeVisible] \
[2504]	1649	-font "Arial 9"
	1650
	1651	checkbutton $inner.wireframe \
	1652	-text "Show Wireframe" \
[3330]	1653	-variable [itcl::scope _settings(volumeWireframe)] \
	1654	-command [itcl::code $this AdjustSetting volumeWireframe] \
[2504]	1655	-font "Arial 9"
	1656
	1657	checkbutton $inner.lighting \
	1658	-text "Enable Lighting" \
[3330]	1659	-variable [itcl::scope _settings(volumeLighting)] \
	1660	-command [itcl::code $this AdjustSetting volumeLighting] \
[2504]	1661	-font "Arial 9"
	1662
	1663	checkbutton $inner.edges \
	1664	-text "Show Edges" \
[3330]	1665	-variable [itcl::scope _settings(volumeEdges)] \
	1666	-command [itcl::code $this AdjustSetting volumeEdges] \
[2504]	1667	-font "Arial 9"
	1668
	1669	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1670	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[3330]	1671	-variable [itcl::scope _settings(volumeOpacity)] \
[2504]	1672	-width 10 \
	1673	-showvalue off \
[3330]	1674	-command [itcl::code $this AdjustSetting volumeOpacity]
[2504]	1675
	1676	blt::table $inner \
[3330]	1677	0,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
	1678	1,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
	1679	2,0 $inner.edges -anchor w -pady 2 -cspan 3 \
	1680	3,0 $inner.opacity_l -anchor w -pady 2 \
	1681	3,1 $inner.opacity -fill x -pady 2
[2504]	1682
	1683	blt::table configure $inner r* c* -resize none
[3330]	1684	blt::table configure $inner r4 c1 -resize expand
[2504]	1685	}
	1686
	1687
	1688	itcl::body Rappture::VtkStreamlinesViewer::BuildStreamsTab {} {
	1689
	1690	set fg [option get $itk_component(hull) font Font]
	1691	#set bfg [option get $itk_component(hull) boldFont Font]
	1692
	1693	set inner [$itk_component(main) insert end \
	1694	-title "Streams Settings" \
[2585]	1695	-icon [Rappture::icon streamlines-on]]
[2504]	1696	$inner configure -borderwidth 4
	1697
	1698	checkbutton $inner.streamlines \
	1699	-text "Show Streamlines" \
[3330]	1700	-variable [itcl::scope _settings(streamlinesVisible)] \
	1701	-command [itcl::code $this AdjustSetting streamlinesVisible] \
[2504]	1702	-font "Arial 9"
[2585]	1703
[2579]	1704	checkbutton $inner.lighting \
	1705	-text "Enable Lighting" \
[3330]	1706	-variable [itcl::scope _settings(streamlinesLighting)] \
	1707	-command [itcl::code $this AdjustSetting streamlinesLighting] \
[2579]	1708	-font "Arial 9"
	1709
[2504]	1710	checkbutton $inner.seeds \
	1711	-text "Show Seeds" \
[3330]	1712	-variable [itcl::scope _settings(streamlinesSeedsVisible)] \
	1713	-command [itcl::code $this AdjustSetting streamlinesSeedsVisible] \
[2504]	1714	-font "Arial 9"
	1715
	1716	label $inner.mode_l -text "Mode" -font "Arial 9"
	1717	itk_component add streammode {
[2744]	1718	Rappture::Combobox $inner.mode -width 10 -editable no
[2504]	1719	}
	1720	$inner.mode choices insert end \
	1721	"lines" "lines" \
	1722	"ribbons" "ribbons" \
	1723	"tubes" "tubes"
[3330]	1724	$itk_component(streammode) value $_settings(streamlinesMode)
	1725	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting streamlinesMode]
[2504]	1726
	1727	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1728	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[3330]	1729	-variable [itcl::scope _settings(streamlinesOpacity)] \
[2504]	1730	-width 10 \
	1731	-showvalue off \
[3330]	1732	-command [itcl::code $this AdjustSetting streamlinesOpacity]
[2504]	1733
[3330]	1734	label $inner.density_l -text "No. Seeds" -font "Arial 9"
[2587]	1735	::scale $inner.density -from 1 -to 1000 -orient horizontal \
[3330]	1736	-variable [itcl::scope _settings(streamlinesNumSeeds)] \
[2579]	1737	-width 10 \
[2587]	1738	-showvalue on \
[3330]	1739	-command [itcl::code $this AdjustSetting streamlinesNumSeeds]
[2579]	1740
	1741	label $inner.scale_l -text "Scale" -font "Arial 9"
	1742	::scale $inner.scale -from 1 -to 100 -orient horizontal \
[3330]	1743	-variable [itcl::scope _settings(streamlinesScale)] \
[2579]	1744	-width 10 \
	1745	-showvalue off \
[3330]	1746	-command [itcl::code $this AdjustSetting streamlinesScale]
[2579]	1747
[2584]	1748	label $inner.field_l -text "Field" -font "Arial 9"
	1749	itk_component add field {
[2744]	1750	Rappture::Combobox $inner.field -width 10 -editable no
[2584]	1751	}
	1752	bind $inner.field <<Value>> \
[3421]	1753	[itcl::code $this AdjustSetting field]
[2584]	1754
[3442]	1755	label $inner.colormap_l -text "Colormap" -font "Arial 9"
	1756	itk_component add colormap {
	1757	Rappture::Combobox $inner.colormap -width 10 -editable no
[2586]	1758	}
[3442]	1759	$inner.colormap choices insert end \
[2744]	1760	"BCGYR" "BCGYR" \
	1761	"BGYOR" "BGYOR" \
	1762	"blue" "blue" \
	1763	"blue-to-brown" "blue-to-brown" \
	1764	"blue-to-orange" "blue-to-orange" \
	1765	"blue-to-grey" "blue-to-grey" \
	1766	"green-to-magenta" "green-to-magenta" \
	1767	"greyscale" "greyscale" \
	1768	"nanohub" "nanohub" \
	1769	"rainbow" "rainbow" \
	1770	"spectral" "spectral" \
	1771	"ROYGB" "ROYGB" \
	1772	"RYGCB" "RYGCB" \
	1773	"brown-to-blue" "brown-to-blue" \
	1774	"grey-to-blue" "grey-to-blue" \
	1775	"orange-to-blue" "orange-to-blue"
[2587]	1776
[3442]	1777	$itk_component(colormap) value "BCGYR"
	1778	bind $inner.colormap <<Value>> \
	1779	[itcl::code $this AdjustSetting streamlinesColormap]
[2586]	1780
[2504]	1781	blt::table $inner \
[3442]	1782	0,0 $inner.field_l -anchor w -pady 2 \
	1783	0,1 $inner.field -fill x -pady 2 \
	1784	1,0 $inner.colormap_l -anchor w -pady 2 \
	1785	1,1 $inner.colormap -fill x -pady 2 \
[3330]	1786	2,0 $inner.mode_l -anchor w -pady 2 \
	1787	2,1 $inner.mode -fill x -pady 2 \
	1788	3,0 $inner.opacity_l -anchor w -pady 2 \
[3442]	1789	3,1 $inner.opacity -fill x -pady 2 \
[3330]	1790	5,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
	1791	6,0 $inner.seeds -anchor w -pady 2 -cspan 2 \
	1792	7,0 $inner.density_l -anchor w -pady 2 \
	1793	7,1 $inner.density -fill x -pady 2 \
[2504]	1794
	1795	blt::table configure $inner r* c* -resize none
[2586]	1796	blt::table configure $inner r10 c1 c2 -resize expand
[2504]	1797	}
	1798
	1799	itcl::body Rappture::VtkStreamlinesViewer::BuildAxisTab {} {
	1800
	1801	set fg [option get $itk_component(hull) font Font]
	1802	#set bfg [option get $itk_component(hull) boldFont Font]
	1803
	1804	set inner [$itk_component(main) insert end \
	1805	-title "Axis Settings" \
	1806	-icon [Rappture::icon axis1]]
	1807	$inner configure -borderwidth 4
	1808
	1809	checkbutton $inner.visible \
	1810	-text "Show Axes" \
[3330]	1811	-variable [itcl::scope _settings(axesVisible)] \
	1812	-command [itcl::code $this AdjustSetting axesVisible] \
[2504]	1813	-font "Arial 9"
	1814
	1815	checkbutton $inner.labels \
	1816	-text "Show Axis Labels" \
[3330]	1817	-variable [itcl::scope _settings(axisLabelsVisible)] \
	1818	-command [itcl::code $this AdjustSetting axisLabelsVisible] \
[2504]	1819	-font "Arial 9"
	1820
[3330]	1821	checkbutton $inner.xgrid \
[2504]	1822	-text "Show X Grid" \
[3330]	1823	-variable [itcl::scope _settings(axisXGrid)] \
	1824	-command [itcl::code $this AdjustSetting axisXGrid] \
[2504]	1825	-font "Arial 9"
[3330]	1826	checkbutton $inner.ygrid \
[2504]	1827	-text "Show Y Grid" \
[3330]	1828	-variable [itcl::scope _settings(axisYGrid)] \
	1829	-command [itcl::code $this AdjustSetting axisYGrid] \
[2504]	1830	-font "Arial 9"
[3330]	1831	checkbutton $inner.zgrid \
[2504]	1832	-text "Show Z Grid" \
[3330]	1833	-variable [itcl::scope _settings(axisZGrid)] \
	1834	-command [itcl::code $this AdjustSetting axisZGrid] \
[2504]	1835	-font "Arial 9"
	1836
	1837	label $inner.mode_l -text "Mode" -font "Arial 9"
	1838
	1839	itk_component add axismode {
[2744]	1840	Rappture::Combobox $inner.mode -width 10 -editable no
[2504]	1841	}
	1842	$inner.mode choices insert end \
	1843	"static_triad" "static" \
	1844	"closest_triad" "closest" \
	1845	"furthest_triad" "furthest" \
	1846	"outer_edges" "outer"
	1847	$itk_component(axismode) value "static"
	1848	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axis-mode]
	1849
	1850	blt::table $inner \
	1851	0,0 $inner.visible -anchor w -cspan 2 \
	1852	1,0 $inner.labels -anchor w -cspan 2 \
[3330]	1853	2,0 $inner.xgrid -anchor w -cspan 2 \
	1854	3,0 $inner.ygrid -anchor w -cspan 2 \
	1855	4,0 $inner.zgrid -anchor w -cspan 2 \
[2504]	1856	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
	1857	6,0 $inner.mode -fill x -cspan 2
	1858
	1859	blt::table configure $inner r* c* -resize none
	1860	blt::table configure $inner r7 c1 -resize expand
	1861	}
	1862
	1863
	1864	itcl::body Rappture::VtkStreamlinesViewer::BuildCameraTab {} {
	1865	set inner [$itk_component(main) insert end \
	1866	-title "Camera Settings" \
	1867	-icon [Rappture::icon camera]]
	1868	$inner configure -borderwidth 4
	1869
	1870	set labels { qx qy qz qw xpan ypan zoom }
	1871	set row 0
	1872	foreach tag $labels {
	1873	label $inner.${tag}label -text $tag -font "Arial 9"
	1874	entry $inner.${tag} -font "Arial 9" -bg white \
	1875	-textvariable [itcl::scope _view($tag)]
	1876	bind $inner.${tag} <KeyPress-Return> \
	1877	[itcl::code $this camera set ${tag}]
	1878	blt::table $inner \
	1879	$row,0 $inner.${tag}label -anchor e -pady 2 \
	1880	$row,1 $inner.${tag} -anchor w -pady 2
	1881	blt::table configure $inner r$row -resize none
	1882	incr row
	1883	}
	1884	checkbutton $inner.ortho \
	1885	-text "Orthographic Projection" \
	1886	-variable [itcl::scope _view(ortho)] \
	1887	-command [itcl::code $this camera set ortho] \
	1888	-font "Arial 9"
	1889	blt::table $inner \
[3441]	1890	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
[2504]	1891	blt::table configure $inner r$row -resize none
	1892	incr row
	1893
	1894	blt::table configure $inner c0 c1 -resize none
	1895	blt::table configure $inner c2 -resize expand
	1896	blt::table configure $inner r$row -resize expand
	1897	}
	1898
[2584]	1899	itcl::body Rappture::VtkStreamlinesViewer::BuildCutplaneTab {} {
[2504]	1900
	1901	set fg [option get $itk_component(hull) font Font]
	1902
	1903	set inner [$itk_component(main) insert end \
[2587]	1904	-title "Cutplane Settings" \
[2744]	1905	-icon [Rappture::icon cutbutton]]
[2504]	1906
	1907	$inner configure -borderwidth 4
	1908
[2587]	1909	checkbutton $inner.visible \
	1910	-text "Show Cutplanes" \
[3330]	1911	-variable [itcl::scope _settings(cutplaneVisible)] \
	1912	-command [itcl::code $this AdjustSetting cutplaneVisible] \
[2587]	1913	-font "Arial 9"
	1914
	1915	checkbutton $inner.wireframe \
	1916	-text "Show Wireframe" \
[3330]	1917	-variable [itcl::scope _settings(cutplaneWireframe)] \
	1918	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
[2587]	1919	-font "Arial 9"
	1920
	1921	checkbutton $inner.lighting \
	1922	-text "Enable Lighting" \
[3330]	1923	-variable [itcl::scope _settings(cutplaneLighting)] \
	1924	-command [itcl::code $this AdjustSetting cutplaneLighting] \
[2587]	1925	-font "Arial 9"
	1926
	1927	checkbutton $inner.edges \
	1928	-text "Show Edges" \
[3330]	1929	-variable [itcl::scope _settings(cutplaneEdges)] \
	1930	-command [itcl::code $this AdjustSetting cutplaneEdges] \
[2587]	1931	-font "Arial 9"
	1932
	1933	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1934	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[3330]	1935	-variable [itcl::scope _settings(cutplaneOpacity)] \
[2587]	1936	-width 10 \
	1937	-showvalue off \
[3330]	1938	-command [itcl::code $this AdjustSetting cutplaneOpacity]
	1939	$inner.opacity set $_settings(cutplaneOpacity)
[2587]	1940
[2504]	1941	# X-value slicer...
	1942	itk_component add xCutButton {
	1943	Rappture::PushButton $inner.xbutton \
[3330]	1944	-onimage [Rappture::icon x-cutplane-red] \
	1945	-offimage [Rappture::icon x-cutplane-red] \
	1946	-command [itcl::code $this AdjustSetting cutplaneXVisible] \
	1947	-variable [itcl::scope _settings(cutplaneXVisible)]
[2504]	1948	}
	1949	Rappture::Tooltip::for $itk_component(xCutButton) \
[2584]	1950	"Toggle the X-axis cutplane on/off"
[3330]	1951	$itk_component(xCutButton) select
[2504]	1952
	1953	itk_component add xCutScale {
[3330]	1954	::scale $inner.xval -from 100 -to 0 \
[2504]	1955	-width 10 -orient vertical -showvalue yes \
	1956	-borderwidth 1 -highlightthickness 0 \
[2584]	1957	-command [itcl::code $this EventuallySetCutplane x] \
[3330]	1958	-variable [itcl::scope _settings(cutplaneXPosition)] \
	1959	-foreground red3 -font "Arial 9 bold"
[2504]	1960	} {
	1961	usual
[3330]	1962	ignore -borderwidth -highlightthickness -foreground -font
[2504]	1963	}
[2584]	1964	# Set the default cutplane value before disabling the scale.
[2600]	1965	$itk_component(xCutScale) set 50
[2504]	1966	$itk_component(xCutScale) configure -state disabled
	1967	Rappture::Tooltip::for $itk_component(xCutScale) \
	1968	"@[itcl::code $this Slice tooltip x]"
	1969
	1970	# Y-value slicer...
	1971	itk_component add yCutButton {
	1972	Rappture::PushButton $inner.ybutton \
[3330]	1973	-onimage [Rappture::icon y-cutplane-green] \
	1974	-offimage [Rappture::icon y-cutplane-green] \
	1975	-command [itcl::code $this AdjustSetting cutplaneYVisible] \
	1976	-variable [itcl::scope _settings(cutplaneYVisible)]
[2504]	1977	}
	1978	Rappture::Tooltip::for $itk_component(yCutButton) \
[2584]	1979	"Toggle the Y-axis cutplane on/off"
[3330]	1980	$itk_component(yCutButton) select
[2504]	1981
	1982	itk_component add yCutScale {
[3330]	1983	::scale $inner.yval -from 100 -to 0 \
[2504]	1984	-width 10 -orient vertical -showvalue yes \
	1985	-borderwidth 1 -highlightthickness 0 \
[2584]	1986	-command [itcl::code $this EventuallySetCutplane y] \
[3330]	1987	-variable [itcl::scope _settings(cutplaneYPosition)] \
	1988	-foreground green3 -font "Arial 9 bold"
[2504]	1989	} {
	1990	usual
[3330]	1991	ignore -borderwidth -highlightthickness -foreground -font
[2504]	1992	}
	1993	Rappture::Tooltip::for $itk_component(yCutScale) \
	1994	"@[itcl::code $this Slice tooltip y]"
[2584]	1995	# Set the default cutplane value before disabling the scale.
[2600]	1996	$itk_component(yCutScale) set 50
[2504]	1997	$itk_component(yCutScale) configure -state disabled
	1998
	1999	# Z-value slicer...
	2000	itk_component add zCutButton {
	2001	Rappture::PushButton $inner.zbutton \
[3330]	2002	-onimage [Rappture::icon z-cutplane-blue] \
	2003	-offimage [Rappture::icon z-cutplane-blue] \
	2004	-command [itcl::code $this AdjustSetting cutplaneZVisible] \
	2005	-variable [itcl::scope _settings(cutplaneZVisible)]
[2504]	2006	}
	2007	Rappture::Tooltip::for $itk_component(zCutButton) \
[2584]	2008	"Toggle the Z-axis cutplane on/off"
[3330]	2009	$itk_component(zCutButton) select
[2504]	2010
	2011	itk_component add zCutScale {
[3330]	2012	::scale $inner.zval -from 100 -to 0 \
[2504]	2013	-width 10 -orient vertical -showvalue yes \
	2014	-borderwidth 1 -highlightthickness 0 \
[2584]	2015	-command [itcl::code $this EventuallySetCutplane z] \
[3330]	2016	-variable [itcl::scope _settings(cutplaneZPosition)] \
	2017	-foreground blue3 -font "Arial 9 bold"
[2504]	2018	} {
	2019	usual
[3330]	2020	ignore -borderwidth -highlightthickness -foreground -font
[2504]	2021	}
[2600]	2022	$itk_component(zCutScale) set 50
[2504]	2023	$itk_component(zCutScale) configure -state disabled
	2024	#$itk_component(zCutScale) configure -state disabled
	2025	Rappture::Tooltip::for $itk_component(zCutScale) \
	2026	"@[itcl::code $this Slice tooltip z]"
	2027
	2028	blt::table $inner \
[3330]	2029	0,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
	2030	1,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
	2031	2,0 $inner.edges -anchor w -pady 2 -cspan 4 \
	2032	3,0 $inner.opacity_l -anchor w -pady 2 -cspan 1 \
	2033	3,1 $inner.opacity -fill x -pady 2 -cspan 3 \
	2034	4,0 $itk_component(xCutButton) -anchor w -padx 2 -pady 2 \
	2035	5,0 $itk_component(yCutButton) -anchor w -padx 2 -pady 2 \
	2036	6,0 $itk_component(zCutButton) -anchor w -padx 2 -pady 2 \
	2037	4,1 $itk_component(xCutScale) -fill y -rspan 4 \
	2038	4,2 $itk_component(yCutScale) -fill y -rspan 4 \
	2039	4,3 $itk_component(zCutScale) -fill y -rspan 4 \
[2504]	2040
	2041	blt::table configure $inner r* c* -resize none
[3330]	2042	blt::table configure $inner r7 c4 -resize expand
[2504]	2043	}
	2044
	2045
	2046
	2047	#
	2048	# camera --
	2049	#
	2050	itcl::body Rappture::VtkStreamlinesViewer::camera {option args} {
	2051	switch -- $option {
	2052	"show" {
	2053	puts [array get _view]
	2054	}
	2055	"set" {
	2056	set who [lindex $args 0]
	2057	set x $_view($who)
	2058	set code [catch { string is double $x } result]
	2059	if { $code != 0 \|\| !$result } {
	2060	return
	2061	}
	2062	switch -- $who {
	2063	"ortho" {
	2064	if {$_view(ortho)} {
	2065	SendCmd "camera mode ortho"
	2066	} else {
	2067	SendCmd "camera mode persp"
	2068	}
	2069	}
	2070	"xpan" - "ypan" {
	2071	PanCamera
	2072	}
	2073	"qx" - "qy" - "qz" - "qw" {
	2074	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
[2744]	2075	$_arcball quaternion $q
	2076	EventuallyRotate $q
[2504]	2077	}
	2078	"zoom" {
	2079	SendCmd "camera zoom $_view(zoom)"
	2080	}
	2081	}
	2082	}
	2083	}
	2084	}
	2085
	2086	itcl::body Rappture::VtkStreamlinesViewer::ConvertToVtkData { dataobj comp } {
	2087	foreach { x1 x2 xN y1 y2 yN } [$dataobj mesh $comp] break
	2088	set values [$dataobj values $comp]
	2089	append out "# vtk DataFile Version 2.0 \n"
	2090	append out "Test data \n"
	2091	append out "ASCII \n"
	2092	append out "DATASET STRUCTURED_POINTS \n"
	2093	append out "DIMENSIONS $xN $yN 1 \n"
	2094	append out "ORIGIN 0 0 0 \n"
	2095	append out "SPACING 1 1 1 \n"
	2096	append out "POINT_DATA [expr $xN * $yN] \n"
	2097	append out "SCALARS field float 1 \n"
	2098	append out "LOOKUP_TABLE default \n"
	2099	append out [join $values "\n"]
	2100	append out "\n"
	2101	return $out
	2102	}
	2103
	2104
	2105	itcl::body Rappture::VtkStreamlinesViewer::GetVtkData { args } {
	2106	set bytes ""
	2107	foreach dataobj [get] {
	2108	foreach comp [$dataobj components] {
	2109	set tag $dataobj-$comp
[2744]	2110	#set contents [ConvertToVtkData $dataobj $comp]
	2111	set contents [$dataobj blob $comp]
	2112	append bytes "$contents\n\n"
[2504]	2113	}
	2114	}
[2584]	2115	return [list .vtk $bytes]
[2504]	2116	}
	2117
	2118	itcl::body Rappture::VtkStreamlinesViewer::GetImage { args } {
	2119	if { [image width $_image(download)] > 0 &&
[2744]	2120	[image height $_image(download)] > 0 } {
	2121	set bytes [$_image(download) data -format "jpeg -quality 100"]
	2122	set bytes [Rappture::encoding::decode -as b64 $bytes]
	2123	return [list .jpg $bytes]
[2504]	2124	}
	2125	return ""
	2126	}
	2127
	2128	itcl::body Rappture::VtkStreamlinesViewer::BuildDownloadPopup { popup command } {
	2129	Rappture::Balloon $popup \
	2130	-title "[Rappture::filexfer::label downloadWord] as..."
	2131	set inner [$popup component inner]
	2132	label $inner.summary -text "" -anchor w
	2133	radiobutton $inner.vtk_button -text "VTK data file" \
	2134	-variable [itcl::scope _downloadPopup(format)] \
	2135	-font "Helvetica 9 " \
	2136	-value vtk
	2137	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
	2138	radiobutton $inner.image_button -text "Image File" \
	2139	-variable [itcl::scope _downloadPopup(format)] \
	2140	-value image
	2141	Rappture::Tooltip::for $inner.image_button \
	2142	"Save as digital image."
	2143
	2144	button $inner.ok -text "Save" \
[2744]	2145	-highlightthickness 0 -pady 2 -padx 3 \
[2504]	2146	-command $command \
[2744]	2147	-compound left \
	2148	-image [Rappture::icon download]
[2504]	2149
	2150	button $inner.cancel -text "Cancel" \
[2744]	2151	-highlightthickness 0 -pady 2 -padx 3 \
	2152	-command [list $popup deactivate] \
	2153	-compound left \
	2154	-image [Rappture::icon cancel]
[2504]	2155
	2156	blt::table $inner \
	2157	0,0 $inner.summary -cspan 2 \
	2158	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
	2159	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
	2160	4,1 $inner.cancel -width .9i -fill y \
	2161	4,0 $inner.ok -padx 2 -width .9i -fill y
	2162	blt::table configure $inner r3 -height 4
	2163	blt::table configure $inner r4 -pady 4
	2164	raise $inner.image_button
	2165	$inner.vtk_button invoke
	2166	return $inner
	2167	}
	2168
	2169	itcl::body Rappture::VtkStreamlinesViewer::SetObjectStyle { dataobj comp } {
	2170	# Parse style string.
	2171	set tag $dataobj-$comp
	2172	set style [$dataobj style $comp]
	2173	array set settings {
[2744]	2174	-color \#808080
	2175	-edges 0
	2176	-edgecolor black
	2177	-linewidth 1.0
	2178	-opacity 0.4
	2179	-wireframe 0
	2180	-lighting 1
	2181	-seeds 1
	2182	-seedcolor white
	2183	-visible 1
[2504]	2184	}
[2600]	2185	if { $dataobj != $_first } {
[2744]	2186	set settings(-opacity) 1
[2600]	2187	}
[2504]	2188	array set settings $style
	2189	SendCmd "streamlines add $tag"
[2569]	2190	SendCmd "streamlines seed visible off $tag"
[2547]	2191	set seeds [$dataobj hints seeds]
	2192	if { $seeds != "" && ![info exists _seeds($dataobj)] } {
[2744]	2193	set length [string length $seeds]
	2194	SendCmd "streamlines seed fmesh 200 data follows $length $tag"
	2195	SendCmd "$seeds"
	2196	set _seeds($dataobj) 1
[2547]	2197	}
[2584]	2198	SendCmd "cutplane add $tag"
[2504]	2199	SendCmd "polydata add $tag"
[3330]	2200	set _settings(volumeEdges) $settings(-edges)
	2201	set _settings(volumeLighting) $settings(-lighting)
	2202	set _settings(volumeOpacity) $settings(-opacity)
	2203	set _settings(volumeWireframe) $settings(-wireframe)
	2204	set _settings(volumeOpacity) [expr $settings(-opacity) * 100.0]
[2504]	2205	SetColormap $dataobj $comp
	2206	}
	2207
	2208	itcl::body Rappture::VtkStreamlinesViewer::IsValidObject { dataobj } {
	2209	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
[2744]	2210	return 0
[2504]	2211	}
	2212	return 1
	2213	}
	2214
	2215	# ----------------------------------------------------------------------
	2216	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
	2217	#
	2218	# Invoked automatically whenever the "legend" command comes in from
	2219	# the rendering server. Indicates that binary image data with the
	2220	# specified <size> will follow.
	2221	# ----------------------------------------------------------------------
	2222	itcl::body Rappture::VtkStreamlinesViewer::ReceiveLegend { colormap title vmin vmax size } {
[2673]	2223	set _legendPending 0
[2504]	2224	set _title $title
[2606]	2225	regsub {\(mag\)} $title "" _title
[2504]	2226	if { [IsConnected] } {
	2227	set bytes [ReceiveBytes $size]
	2228	if { ![info exists _image(legend)] } {
	2229	set _image(legend) [image create photo]
	2230	}
	2231	$_image(legend) configure -data $bytes
	2232	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
[3442]	2233	if { [catch {DrawLegend} errs] != 0 } {
[2744]	2234	puts stderr errs=$errs
	2235	}
[2504]	2236	}
	2237	}
	2238
	2239	#
	2240	# DrawLegend --
	2241	#
[2744]	2242	# Draws the legend in it's own canvas which resides to the right
	2243	# of the contour plot area.
[2504]	2244	#
[3442]	2245	itcl::body Rappture::VtkStreamlinesViewer::DrawLegend {} {
	2246	set fname $_curFldName
[2504]	2247	set c $itk_component(view)
	2248	set w [winfo width $c]
	2249	set h [winfo height $c]
	2250	set font "Arial 8"
	2251	set lineht [font metrics $font -linespace]
	2252
[3442]	2253	if { [info exists _fields($fname)] } {
	2254	foreach { title units } $_fields($fname) break
[2744]	2255	if { $units != "" } {
	2256	set title [format "%s (%s)" $title $units]
	2257	}
[2606]	2258	} else {
[3442]	2259	set title $fname
[2604]	2260	}
[3330]	2261	if { $_settings(legendVisible) } {
[2744]	2262	set x [expr $w - 2]
	2263	if { [$c find withtag "legend"] == "" } {
	2264	set y 2
	2265	$c create text $x $y \
	2266	-anchor ne \
	2267	-fill $itk_option(-plotforeground) -tags "title legend" \
	2268	-font $font
	2269	incr y $lineht
	2270	$c create text $x $y \
	2271	-anchor ne \
	2272	-fill $itk_option(-plotforeground) -tags "vmax legend" \
	2273	-font $font
	2274	incr y $lineht
	2275	$c create image $x $y \
	2276	-anchor ne \
	2277	-image $_image(legend) -tags "colormap legend"
	2278	$c create text $x [expr {$h-2}] \
	2279	-anchor se \
	2280	-fill $itk_option(-plotforeground) -tags "vmin legend" \
	2281	-font $font
	2282	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
	2283	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
	2284	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
	2285	}
	2286	$c bind title <ButtonPress> [itcl::code $this Combo post]
	2287	$c bind title <Enter> [itcl::code $this Combo activate]
	2288	$c bind title <Leave> [itcl::code $this Combo deactivate]
	2289	# Reset the item coordinates according the current size of the plot.
	2290	$c itemconfigure title -text $title
[3431]	2291	if { [info exists _limits($_curFldName)] } {
	2292	foreach {vmin vmax} $_limits($_curFldName) break
	2293	$c itemconfigure vmin -text [format %g $vmin]
	2294	$c itemconfigure vmax -text [format %g $vmax]
[2744]	2295	}
	2296	set y 2
	2297	$c coords title $x $y
	2298	incr y $lineht
	2299	$c coords vmax $x $y
	2300	incr y $lineht
	2301	$c coords colormap $x $y
	2302	$c coords vmin $x [expr {$h - 2}]
[2504]	2303	}
	2304	}
	2305
	2306	#
	2307	# EnterLegend --
	2308	#
	2309	itcl::body Rappture::VtkStreamlinesViewer::EnterLegend { x y } {
	2310	SetLegendTip $x $y
	2311	}
	2312
	2313	#
	2314	# MotionLegend --
	2315	#
	2316	itcl::body Rappture::VtkStreamlinesViewer::MotionLegend { x y } {
	2317	Rappture::Tooltip::tooltip cancel
	2318	set c $itk_component(view)
	2319	SetLegendTip $x $y
	2320	}
	2321
	2322	#
	2323	# LeaveLegend --
	2324	#
	2325	itcl::body Rappture::VtkStreamlinesViewer::LeaveLegend { } {
	2326	Rappture::Tooltip::tooltip cancel
	2327	.rappturetooltip configure -icon ""
	2328	}
	2329
	2330	#
	2331	# SetLegendTip --
	2332	#
	2333	itcl::body Rappture::VtkStreamlinesViewer::SetLegendTip { x y } {
	2334	set c $itk_component(view)
	2335	set w [winfo width $c]
	2336	set h [winfo height $c]
	2337	set font "Arial 8"
	2338	set lineht [font metrics $font -linespace]
	2339
	2340	set imgHeight [image height $_image(legend)]
	2341	set coords [$c coords colormap]
	2342	set imgX [expr $w - [image width $_image(legend)] - 2]
[2584]	2343	set imgY [expr $y - 2 * ($lineht + 2)]
[2504]	2344
[2606]	2345	if { [info exists _fields($_title)] } {
[2744]	2346	foreach { title units } $_fields($_title) break
	2347	if { $units != "" } {
	2348	set title [format "%s (%s)" $title $units]
	2349	}
[2606]	2350	} else {
[2744]	2351	set title $_title
[2606]	2352	}
[2504]	2353	# Make a swatch of the selected color
	2354	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
[2744]	2355	#puts stderr "out of range: $imgY"
	2356	return
[2504]	2357	}
	2358	if { ![info exists _image(swatch)] } {
[2744]	2359	set _image(swatch) [image create photo -width 24 -height 24]
[2504]	2360	}
	2361	set color [eval format "\#%02x%02x%02x" $pixel]
	2362	$_image(swatch) put black -to 0 0 23 23
	2363	$_image(swatch) put $color -to 1 1 22 22
	2364	.rappturetooltip configure -icon $_image(swatch)
	2365
	2366	# Compute the value of the point
[3431]	2367	if { [info exists _limits($_curFldName)] } {
	2368	foreach {vmin vmax} $_limits($_curFldName) break
[2744]	2369	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
[3431]	2370	set value [expr $t * ($vmax - $vmin) + $vmin]
[2622]	2371	} else {
[2744]	2372	set value 0.0
[2622]	2373	}
[2504]	2374	set tipx [expr $x + 15]
	2375	set tipy [expr $y - 5]
[2606]	2376	Rappture::Tooltip::text $c "$title $value"
[2504]	2377	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
	2378	}
	2379
	2380
	2381	# ----------------------------------------------------------------------
	2382	# USAGE: Slice move x\|y\|z <newval>
	2383	#
	2384	# Called automatically when the user drags the slider to move the
	2385	# cut plane that slices 3D data. Gets the current value from the
	2386	# slider and moves the cut plane to the appropriate point in the
	2387	# data set.
	2388	# ----------------------------------------------------------------------
	2389	itcl::body Rappture::VtkStreamlinesViewer::Slice {option args} {
	2390	switch -- $option {
	2391	"move" {
	2392	set axis [lindex $args 0]
[2600]	2393	set oldval $_settings(axis-${axis}position)
[2504]	2394	set newval [lindex $args 1]
	2395	if {[llength $args] != 2} {
	2396	error "wrong # args: should be \"Slice move x\|y\|z newval\""
	2397	}
	2398	set newpos [expr {0.01*$newval}]
[2584]	2399	SendCmd "cutplane slice $axis $newpos"
[2504]	2400	}
[2744]	2401	"tooltip" {
	2402	set axis [lindex $args 0]
	2403	set val [$itk_component(${axis}CutScale) get]
	2404	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
	2405	}
[2504]	2406	default {
	2407	error "bad option \"$option\": should be axis, move, or tooltip"
	2408	}
	2409	}
	2410	}
[2649]	2411
	2412
	2413	# ----------------------------------------------------------------------
	2414	# USAGE: _dropdown post
	2415	# USAGE: _dropdown unpost
	2416	# USAGE: _dropdown select
	2417	#
	2418	# Used internally to handle the dropdown list for this combobox. The
	2419	# post/unpost options are invoked when the list is posted or unposted
	2420	# to manage the relief of the controlling button. The select option
	2421	# is invoked whenever there is a selection from the list, to assign
	2422	# the value back to the gauge.
	2423	# ----------------------------------------------------------------------
	2424	itcl::body Rappture::VtkStreamlinesViewer::Combo {option} {
	2425	set c $itk_component(view)
	2426	switch -- $option {
	2427	post {
[2744]	2428	foreach { x1 y1 x2 y2 } [$c bbox title] break
	2429	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
	2430	set x [expr $x1 + [winfo rootx $itk_component(view)]]
	2431	set y [expr $y2 + [winfo rooty $itk_component(view)]]
	2432	tk_popup $itk_component(fieldmenu) $x $y
[2649]	2433	}
	2434	activate {
[2744]	2435	$c itemconfigure title -fill red
[2649]	2436	}
	2437	deactivate {
[2744]	2438	$c itemconfigure title -fill white
[2649]	2439	}
[2744]	2440	invoke {
[3405]	2441	$itk_component(field) value $_curFldLabel
[3421]	2442	AdjustSetting field
[2744]	2443	}
[2649]	2444	default {
	2445	error "bad option \"$option\": should be post, unpost, select"
	2446	}
	2447	}
	2448	}
[3421]	2449

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