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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3498

Last change on this file since 3498 was 3498, checked in by ldelgass, 12 years ago
Delay Rebuild until window size larger than 1x1 - copying this code from VTK viewers to nanovis viewers. Helps get proper aspect for initial camera reset. There is still a problem with the updir coming too late (needs to come before camera reset).
File size: 83.2 KB

Rev	Line
[3330]	1	# -- mode: tcl; indent-tabs-mode: nil --
[2731]	2	# ----------------------------------------------------------------------
	3	# COMPONENT: vtkheightmapviewer - Vtk heightmap 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
[2731]	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 *VtkHeightmapViewer.width 4i widgetDefault
	19	option add VtkHeightmapViewercursor crosshair widgetDefault
	20	option add *VtkHeightmapViewer.height 4i widgetDefault
	21	option add *VtkHeightmapViewer.foreground black widgetDefault
	22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
	23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
	24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
	25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
	26	option add *VtkHeightmapViewer.font \
	27	--helvetica-medium-r-normal--12-* widgetDefault
	28
	29	# must use this name -- plugs into Rappture::resources::load
	30	proc VtkHeightmapViewer_init_resources {} {
	31	Rappture::resources::register \
	32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
	33	}
	34
	35	itcl::class Rappture::VtkHeightmapViewer {
	36	inherit Rappture::VisViewer
	37
	38	itk_option define -plotforeground plotForeground Foreground ""
	39	itk_option define -plotbackground plotBackground Background ""
[3330]	40	itk_option define -mode mode Mode "contour"
[2731]	41
	42	constructor { hostlist args } {
	43	Rappture::VisViewer::constructor $hostlist
	44	} {
	45	# defined below
	46	}
	47	destructor {
	48	# defined below
	49	}
	50	public proc SetServerList { namelist } {
	51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
	52	}
	53	public method add {dataobj {settings ""}}
	54	public method camera {option args}
	55	public method delete {args}
	56	public method disconnect {}
	57	public method download {option args}
	58	public method get {args}
	59	public method isconnected {}
[3428]	60	public method limits3 { dataobj }
[2731]	61	public method parameters {title args} {
	62	# do nothing
	63	}
	64	public method scale {args}
	65
	66	protected method Connect {}
	67	protected method CurrentDatasets {args}
	68	protected method Disconnect {}
	69	protected method DoResize {}
	70	protected method DoRotate {}
	71	protected method AdjustSetting {what {value ""}}
[3330]	72	protected method AdjustMode {}
[2731]	73	protected method InitSettings { args }
	74	protected method Pan {option x y}
	75	protected method Pick {x y}
	76	protected method Rebuild {}
	77	protected method ReceiveDataset { args }
	78	protected method ReceiveImage { args }
[3330]	79	protected method ReceiveLegend { colormap title min max size }
[2731]	80	protected method Rotate {option x y}
	81	protected method Zoom {option}
[3421]	82
[2731]	83	# The following methods are only used by this class.
	84	private method BuildAxisTab {}
	85	private method BuildCameraTab {}
[3454]	86	private method BuildColormap { name }
[3330]	87	private method BuildContourTab {}
[2731]	88	private method BuildDownloadPopup { widget command }
[3330]	89	private method Combo { option }
[2731]	90	private method ConvertToVtkData { dataobj comp }
[3421]	91	private method DrawLegend {}
[2731]	92	private method EnterLegend { x y }
[3330]	93	private method EventuallyRequestLegend {}
[2731]	94	private method EventuallyResize { w h }
	95	private method EventuallyRotate { q }
	96	private method GetImage { args }
	97	private method GetVtkData { args }
	98	private method IsValidObject { dataobj }
	99	private method LeaveLegend {}
	100	private method MotionLegend { x y }
	101	private method PanCamera {}
	102	private method RequestLegend {}
[3454]	103	private method SetCurrentColormap { color }
[2731]	104	private method SetLegendTip { x y }
	105	private method SetObjectStyle { dataobj comp }
[3330]	106	private method GetHeightmapScale {}
	107	private method ResetAxes {}
[2731]	108
	109	private variable _arcball ""
[2744]	110	private variable _dlist "" ; # list of data objects
[2731]	111	private variable _obj2datasets
[2744]	112	private variable _obj2ovride ; # maps dataobj => style override
[3330]	113	private variable _comp2scale; # maps dataset to the heightmap scale.
[2744]	114	private variable _datasets ; # contains all the dataobj-component
	115	; # datasets in the server
	116	private variable _colormaps ; # contains all the colormaps
	117	; # in the server.
[2731]	118
[3330]	119	# The name of the current colormap used. The colormap is global to all
	120	# heightmaps displayed.
	121	private variable _currentColormap "" ;
[3454]	122	private variable _currentNumIsolines "" ;
	123	private variable _currentOpacity "" ;
[3330]	124
[2744]	125	private variable _click ; # info used for rotate operations
[3424]	126	private variable _limits ; # Holds overall limits for all dataobjs
[3330]	127	# using the viewer.
[2744]	128	private variable _view ; # view params for 3D view
[2731]	129	private variable _settings
[3454]	130	private variable _changed
[3330]	131	private variable _initialStyle ""; # First found style in dataobjects.
	132	private variable _reset 1; # Indicates if camera needs to be reset
[2744]	133	# to starting position.
[3330]	134	private variable _beforeConnect 1; # Indicates if camera needs to be reset
	135	# to starting position.
[2731]	136
[2744]	137	private variable _first "" ; # This is the topmost dataset.
[2731]	138	private variable _start 0
[3439]	139	private variable _isolines
[2731]	140
[2744]	141	common _downloadPopup; # download options from popup
[2731]	142	private common _hardcopy
	143	private variable _width 0
	144	private variable _height 0
[3421]	145	private variable _legendWidth 0
	146	private variable _legendHeight 0
[2731]	147	private variable _resizePending 0
	148	private variable _rotatePending 0
	149	private variable _legendPending 0
[3330]	150	private variable _fieldNames {}
[2731]	151	private variable _fields
[3409]	152	private variable _curFldName ""
	153	private variable _curFldLabel ""
[2731]	154	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
	155	}
	156
	157	itk::usual VtkHeightmapViewer {
	158	keep -background -foreground -cursor -font
[3330]	159	keep -plotbackground -plotforeground -mode
[2731]	160	}
	161
	162	# ----------------------------------------------------------------------
	163	# CONSTRUCTOR
	164	# ----------------------------------------------------------------------
	165	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
	166	set _serverType "vtkvis"
	167
[3454]	168	EnableWaitDialog 1000
[2731]	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
	177	# Rotate event
	178	$_dispatcher register !rotate
	179	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
	180
	181	# Legend event
	182	$_dispatcher register !legend
	183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
	184
	185	#
	186	# Populate parser with commands handle incoming requests
	187	#
	188	$_parser alias image [itcl::code $this ReceiveImage]
	189	$_parser alias dataset [itcl::code $this ReceiveDataset]
	190	$_parser alias legend [itcl::code $this ReceiveLegend]
	191
	192	# Initialize the view to some default parameters.
	193	array set _view {
[3482]	194	qw 0.36
	195	qx 0.25
	196	qy 0.50
	197	qz 0.70
[3330]	198	zoom 1.0
	199	xpan 0
	200	ypan 0
	201	ortho 1
[2731]	202	}
	203	set _arcball [blt::arcball create 100 100]
	204	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	205	$_arcball quaternion $q
	206
[3454]	207	array set _settings {
[3330]	208	axisFlymode "static"
	209	axisMinorTicks 1
	210	stretchToFit 0
	211	axisLabels 1
	212	axisVisible 1
	213	axisXGrid 0
	214	axisYGrid 0
	215	axisZGrid 0
	216	colormapVisible 1
[3462]	217	colormapDiscrete 0
[3330]	218	edges 0
	219	field "Default"
	220	heightmapScale 50
	221	isHeightmap 0
[3417]	222	isolineColor black
[3330]	223	isolinesVisible 1
	224	legendVisible 1
[3417]	225	lighting 1
	226	saveLighting 1
	227	numIsolines 10
	228	opacity 100
[3330]	229	outline 0
	230	wireframe 0
[3417]	231	saveOpacity 100
[3454]	232	}
	233	array set _changed {
	234	opacity 0
	235	colormap 0
	236	numIsolines 0
	237	}
[2731]	238	itk_component add view {
	239	canvas $itk_component(plotarea).view \
	240	-highlightthickness 0 -borderwidth 0
	241	} {
	242	usual
[3330]	243	ignore -highlightthickness -borderwidth -background
[2731]	244	}
	245
	246	itk_component add fieldmenu {
[3330]	247	menu $itk_component(plotarea).menu \
	248	-relief flat \
[2744]	249	-tearoff no
[2731]	250	} {
[2744]	251	usual
	252	ignore -background -foreground -relief -tearoff
[2731]	253	}
	254	set c $itk_component(view)
	255	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
	256	bind $c <4> [itcl::code $this Zoom in 0.25]
	257	bind $c <5> [itcl::code $this Zoom out 0.25]
	258	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
	259	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
	260	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
	261	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
	262	bind $c <Enter> "focus %W"
[3330]	263	bind $c <Control-F1> [itcl::code $this ToggleConsole]
[2731]	264
	265	# Fix the scrollregion in case we go off screen
	266	$c configure -scrollregion [$c bbox all]
	267
	268	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
	269	set _map(cwidth) -1
	270	set _map(cheight) -1
	271	set _map(zoom) 1.0
	272	set _map(original) ""
	273
	274	set f [$itk_component(main) component controls]
	275	itk_component add reset {
	276	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
	277	-highlightthickness 0 \
	278	-image [Rappture::icon reset-view] \
	279	-command [itcl::code $this Zoom reset]
	280	} {
	281	usual
	282	ignore -highlightthickness
	283	}
	284	pack $itk_component(reset) -side top -padx 2 -pady 2
	285	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
	286
	287	itk_component add zoomin {
	288	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
	289	-highlightthickness 0 \
	290	-image [Rappture::icon zoom-in] \
	291	-command [itcl::code $this Zoom in]
	292	} {
	293	usual
	294	ignore -highlightthickness
	295	}
	296	pack $itk_component(zoomin) -side top -padx 2 -pady 2
	297	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
	298
	299	itk_component add zoomout {
	300	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
	301	-highlightthickness 0 \
	302	-image [Rappture::icon zoom-out] \
	303	-command [itcl::code $this Zoom out]
	304	} {
	305	usual
	306	ignore -highlightthickness
	307	}
	308	pack $itk_component(zoomout) -side top -padx 2 -pady 2
	309	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
	310
[3330]	311	itk_component add mode {
	312	Rappture::PushButton $f.mode \
	313	-onimage [Rappture::icon surface] \
	314	-offimage [Rappture::icon surface] \
	315	-variable [itcl::scope _settings(isHeightmap)] \
	316	-command [itcl::code $this AdjustSetting isHeightmap] \
[2731]	317	}
[3330]	318	Rappture::Tooltip::for $itk_component(mode) \
	319	"Toggle the surface/contour on/off"
	320	pack $itk_component(mode) -padx 2 -pady 2
[2731]	321
	322	if { [catch {
[3330]	323	BuildContourTab
[2744]	324	BuildAxisTab
	325	BuildCameraTab
[2731]	326	} errs] != 0 } {
[3330]	327	global errorInfo
	328	puts stderr "errs=$errs errorInfo=$errorInfo"
[2731]	329	}
	330	set _image(legend) [image create photo]
	331
	332	# Hack around the Tk panewindow. The problem is that the requested
	333	# size of the 3d view isn't set until an image is retrieved from
	334	# the server. So the panewindow uses the tiny size.
	335	set w 10000
	336	pack forget $itk_component(view)
	337	blt::table $itk_component(plotarea) \
	338	0,0 $itk_component(view) -fill both -reqwidth $w
	339	blt::table configure $itk_component(plotarea) c1 -resize none
	340
	341	# Bindings for panning via mouse
	342	bind $itk_component(view) <ButtonPress-2> \
	343	[itcl::code $this Pan click %x %y]
	344	bind $itk_component(view) <B2-Motion> \
	345	[itcl::code $this Pan drag %x %y]
	346	bind $itk_component(view) <ButtonRelease-2> \
	347	[itcl::code $this Pan release %x %y]
	348
[3443]	349	#bind $itk_component(view) <ButtonRelease-3> \
	350	# [itcl::code $this Pick %x %y]
[2731]	351
	352	# Bindings for panning via keyboard
	353	bind $itk_component(view) <KeyPress-Left> \
	354	[itcl::code $this Pan set -10 0]
	355	bind $itk_component(view) <KeyPress-Right> \
	356	[itcl::code $this Pan set 10 0]
	357	bind $itk_component(view) <KeyPress-Up> \
	358	[itcl::code $this Pan set 0 -10]
	359	bind $itk_component(view) <KeyPress-Down> \
	360	[itcl::code $this Pan set 0 10]
	361	bind $itk_component(view) <Shift-KeyPress-Left> \
	362	[itcl::code $this Pan set -2 0]
	363	bind $itk_component(view) <Shift-KeyPress-Right> \
	364	[itcl::code $this Pan set 2 0]
	365	bind $itk_component(view) <Shift-KeyPress-Up> \
	366	[itcl::code $this Pan set 0 -2]
	367	bind $itk_component(view) <Shift-KeyPress-Down> \
	368	[itcl::code $this Pan set 0 2]
	369
	370	# Bindings for zoom via keyboard
	371	bind $itk_component(view) <KeyPress-Prior> \
	372	[itcl::code $this Zoom out]
	373	bind $itk_component(view) <KeyPress-Next> \
	374	[itcl::code $this Zoom in]
	375
	376	bind $itk_component(view) <Enter> "focus $itk_component(view)"
	377
	378	if {[string equal "x11" [tk windowingsystem]]} {
	379	# Bindings for zoom via mouse
	380	bind $itk_component(view) <4> [itcl::code $this Zoom out]
	381	bind $itk_component(view) <5> [itcl::code $this Zoom in]
	382	}
	383
	384	set _image(download) [image create photo]
	385
	386	eval itk_initialize $args
	387	Connect
[3330]	388	set _beforeConnect 0
[2731]	389	}
	390
	391	# ----------------------------------------------------------------------
	392	# DESTRUCTOR
	393	# ----------------------------------------------------------------------
	394	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
	395	Disconnect
	396	image delete $_image(plot)
	397	image delete $_image(download)
	398	catch { blt::arcball destroy $_arcball }
	399	}
	400
	401	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
	402	if { $_width < 2 } {
[2744]	403	set _width 500
[2731]	404	}
	405	if { $_height < 2 } {
[2744]	406	set _height 500
[2731]	407	}
	408	set _start [clock clicks -milliseconds]
[3330]	409	SendCmd "screen size [expr $_width - 20] $_height"
[3421]	410
	411	set font "Arial 8"
	412	set lh [font metrics $font -linespace]
	413	set h [expr {$_height - 2 * ($lh + 2)}]
	414	if { $h != $_legendHeight } {
	415	EventuallyRequestLegend
	416	} else {
	417	DrawLegend
	418	}
[2731]	419	set _resizePending 0
	420	}
	421
	422	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
	423	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	424	SendCmd "camera orient $q"
	425	set _rotatePending 0
	426	}
	427
[3330]	428	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
	429	if { !$_legendPending } {
	430	set _legendPending 1
	431	$_dispatcher event -idle !legend
	432	}
	433	}
	434
[2731]	435	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
	436	set _width $w
	437	set _height $h
	438	$_arcball resize $w $h
	439	if { !$_resizePending } {
	440	set _resizePending 1
[3434]	441	$_dispatcher event -after 250 !resize
[2731]	442	}
	443	}
	444
	445	set rotate_delay 100
	446
	447	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
	448	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
	449	if { !$_rotatePending } {
	450	set _rotatePending 1
[2744]	451	global rotate_delay
[2731]	452	$_dispatcher event -after $rotate_delay !rotate
	453	}
	454	}
	455
	456	# ----------------------------------------------------------------------
	457	# USAGE: add <dataobj> ?<settings>?
	458	#
	459	# Clients use this to add a data object to the plot. The optional
	460	# <settings> are used to configure the plot. Allowed settings are
	461	# -color, -brightness, -width, -linestyle, and -raise.
	462	# ----------------------------------------------------------------------
	463	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
	464	array set params {
	465	-color auto
	466	-width 1
	467	-linestyle solid
	468	-brightness 0
	469	-raise 0
	470	-description ""
	471	-param ""
[2744]	472	-type ""
[2731]	473	}
	474	array set params $settings
	475	set params(-description) ""
	476	set params(-param) ""
	477	foreach {opt val} $settings {
	478	if {![info exists params($opt)]} {
	479	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
	480	}
	481	set params($opt) $val
	482	}
	483	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
	484	# can't handle -autocolors yet
[3330]	485	set params(-color) white
[2731]	486	}
	487	set pos [lsearch -exact $dataobj $_dlist]
	488	if {$pos < 0} {
[2744]	489	lappend _dlist $dataobj
[2731]	490	}
	491	set _obj2ovride($dataobj-color) $params(-color)
	492	set _obj2ovride($dataobj-width) $params(-width)
	493	set _obj2ovride($dataobj-raise) $params(-raise)
	494	$_dispatcher event -idle !rebuild
	495	}
	496
	497
	498	# ----------------------------------------------------------------------
	499	# USAGE: delete ?<dataobj1> <dataobj2> ...?
	500	#
	501	# Clients use this to delete a dataobj from the plot. If no dataobjs
	502	# are specified, then all dataobjs are deleted. No data objects are
	503	# deleted. They are only removed from the display list.
	504	#
	505	# ----------------------------------------------------------------------
	506	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
	507	if { [llength $args] == 0} {
	508	set args $_dlist
	509	}
	510	# Delete all specified dataobjs
	511	set changed 0
	512	foreach dataobj $args {
	513	set pos [lsearch -exact $_dlist $dataobj]
[2744]	514	if { $pos < 0 } {
	515	continue; # Don't know anything about it.
	516	}
	517	# Remove it from the dataobj list.
	518	set _dlist [lreplace $_dlist $pos $pos]
	519	array unset _obj2ovride $dataobj-*
	520	array unset _settings $dataobj-*
	521	# Append to the end of the dataobj list.
[3330]	522	#lappend _dlist $dataobj
[2744]	523	set changed 1
[2731]	524	}
	525	# If anything changed, then rebuild the plot
	526	if { $changed } {
	527	$_dispatcher event -idle !rebuild
	528	}
	529	}
	530
	531	# ----------------------------------------------------------------------
	532	# USAGE: get ?-objects?
	533	# USAGE: get ?-visible?
	534	# USAGE: get ?-image view?
	535	#
	536	# Clients use this to query the list of objects being plotted, in
	537	# order from bottom to top of this result. The optional "-image"
	538	# flag can also request the internal images being shown.
	539	# ----------------------------------------------------------------------
	540	itcl::body Rappture::VtkHeightmapViewer::get {args} {
	541	if {[llength $args] == 0} {
	542	set args "-objects"
	543	}
	544
	545	set op [lindex $args 0]
	546	switch -- $op {
[2744]	547	"-objects" {
	548	# put the dataobj list in order according to -raise options
	549	set dlist {}
	550	foreach dataobj $_dlist {
	551	if { ![IsValidObject $dataobj] } {
	552	continue
	553	}
	554	if {[info exists _obj2ovride($dataobj-raise)] &&
	555	$_obj2ovride($dataobj-raise)} {
	556	set dlist [linsert $dlist 0 $dataobj]
	557	} else {
	558	lappend dlist $dataobj
	559	}
	560	}
	561	return $dlist
	562	}
	563	"-visible" {
	564	set dlist {}
	565	foreach dataobj $_dlist {
	566	if { ![IsValidObject $dataobj] } {
	567	continue
	568	}
	569	if { ![info exists _obj2ovride($dataobj-raise)] } {
	570	# No setting indicates that the object isn't visible.
	571	continue
	572	}
	573	# Otherwise use the -raise parameter to put the object to
	574	# the front of the list.
	575	if { $_obj2ovride($dataobj-raise) } {
	576	set dlist [linsert $dlist 0 $dataobj]
	577	} else {
	578	lappend dlist $dataobj
	579	}
	580	}
	581	return $dlist
	582	}
	583	-image {
	584	if {[llength $args] != 2} {
	585	error "wrong # args: should be \"get -image view\""
	586	}
	587	switch -- [lindex $args end] {
	588	view {
	589	return $_image(plot)
	590	}
	591	default {
	592	error "bad image name \"[lindex $args end]\": should be view"
	593	}
	594	}
	595	}
	596	default {
	597	error "bad option \"$op\": should be -objects or -image"
	598	}
[2731]	599	}
	600	}
	601
[3429]	602	#
	603	# scale --
[2731]	604	#
[3429]	605	# This gets called either incrementally as new simulations are
	606	# added or all at once as a sequence of heightmaps.
	607	# This accounts for all objects--even those not showing on the
	608	# screen. Because of this, the limits are appropriate for all
	609	# objects as the user scans through data in the ResultSet viewer.
	610	#
[2731]	611	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
	612	foreach dataobj $args {
[3428]	613	foreach axis { x y } {
	614	set lim [$dataobj limits $axis]
[3330]	615	if { ![info exists _limits($axis)] } {
[3428]	616	set _limits($axis) $lim
[3330]	617	continue
	618	}
[3428]	619	foreach {min max} $lim break
[3330]	620	foreach {amin amax} $_limits($axis) break
	621	if { $amin > $min } {
	622	set amin $min
	623	}
	624	if { $amax < $max } {
	625	set amax $max
	626	}
	627	set _limits($axis) [list $amin $amax]
[2744]	628	}
[3429]	629	foreach { fname lim } [$dataobj fieldlimits] {
[3428]	630	if { ![info exists _limits($fname)] } {
	631	set _limits($fname) $lim
	632	continue
	633	}
	634	foreach {min max} $lim break
	635	foreach {fmin fmax} $_limits($fname) break
	636	if { $fmin > $min } {
	637	set fmin $min
	638	}
	639	if { $fmax < $max } {
	640	set fmax $max
	641	}
	642	set _limits($fname) [list $fmin $fmax]
	643	}
[2731]	644	}
	645	}
	646
	647	# ----------------------------------------------------------------------
	648	# USAGE: download coming
	649	# USAGE: download controls <downloadCommand>
	650	# USAGE: download now
	651	#
	652	# Clients use this method to create a downloadable representation
	653	# of the plot. Returns a list of the form {ext string}, where
	654	# "ext" is the file extension (indicating the type of data) and
	655	# "string" is the data itself.
	656	# ----------------------------------------------------------------------
	657	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
	658	switch $option {
	659	coming {
	660	if {[catch {
	661	blt::winop snap $itk_component(plotarea) $_image(download)
	662	}]} {
	663	$_image(download) configure -width 1 -height 1
	664	$_image(download) put #000000
	665	}
	666	}
	667	controls {
	668	set popup .vtkviewerdownload
	669	if { ![winfo exists .vtkviewerdownload] } {
	670	set inner [BuildDownloadPopup $popup [lindex $args 0]]
	671	} else {
	672	set inner [$popup component inner]
	673	}
	674	set _downloadPopup(image_controls) $inner.image_frame
	675	set num [llength [get]]
	676	set num [expr {($num == 1) ? "1 result" : "$num results"}]
	677	set word [Rappture::filexfer::label downloadWord]
	678	$inner.summary configure -text "$word $num in the following format:"
[2744]	679	update idletasks ;# Fix initial sizes
[2731]	680	return $popup
	681	}
	682	now {
	683	set popup .vtkviewerdownload
	684	if {[winfo exists .vtkviewerdownload]} {
	685	$popup deactivate
	686	}
	687	switch -- $_downloadPopup(format) {
	688	"image" {
	689	return [$this GetImage [lindex $args 0]]
	690	}
	691	"vtk" {
	692	return [$this GetVtkData [lindex $args 0]]
	693	}
	694	}
	695	return ""
	696	}
	697	default {
	698	error "bad option \"$option\": should be coming, controls, now"
	699	}
	700	}
	701	}
	702
	703	# ----------------------------------------------------------------------
	704	# USAGE: Connect ?<host:port>,<host:port>...?
	705	#
	706	# Clients use this method to establish a connection to a new
	707	# server, or to reestablish a connection to the previous server.
	708	# Any existing connection is automatically closed.
	709	# ----------------------------------------------------------------------
	710	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
[3330]	711	global readyForNextFrame
	712	set readyForNextFrame 1
	713	set _reset 1
[2731]	714	set _hosts [GetServerList "vtkvis"]
	715	if { "" == $_hosts } {
	716	return 0
	717	}
	718	set result [VisViewer::Connect $_hosts]
	719	if { $result } {
	720	set w [winfo width $itk_component(view)]
	721	set h [winfo height $itk_component(view)]
	722	EventuallyResize $w $h
	723	}
	724	return $result
	725	}
	726
	727	#
	728	# isconnected --
	729	#
	730	# Indicates if we are currently connected to the visualization server.
	731	#
	732	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
	733	return [VisViewer::IsConnected]
	734	}
	735
	736	#
	737	# disconnect --
	738	#
	739	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
	740	Disconnect
	741	set _reset 1
	742	}
	743
	744	#
	745	# Disconnect --
	746	#
	747	# Clients use this method to disconnect from the current rendering
	748	# server.
	749	#
	750	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
	751	VisViewer::Disconnect
	752
	753	$_dispatcher cancel !rebuild
	754	$_dispatcher cancel !resize
	755	$_dispatcher cancel !rotate
	756	$_dispatcher cancel !legend
	757	# disconnected -- no more data sitting on server
	758	array unset _datasets
	759	array unset _data
	760	array unset _colormaps
	761	array unset _obj2datasets
[3330]	762	global readyForNextFrame
	763	set readyForNextFrame 1
[2731]	764	}
	765
	766	# ----------------------------------------------------------------------
	767	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
	768	#
	769	# Invoked automatically whenever the "image" command comes in from
	770	# the rendering server. Indicates that binary image data with the
	771	# specified <size> will follow.
	772	# ----------------------------------------------------------------------
	773	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
[3330]	774	global readyForNextFrame
	775	set readyForNextFrame 1
[2731]	776	array set info {
	777	-token "???"
	778	-bytes 0
	779	-type image
	780	}
	781	array set info $args
	782	set bytes [ReceiveBytes $info(-bytes)]
	783	if { $info(-type) == "image" } {
[2744]	784	if 0 {
	785	set f [open "last.ppm" "w"]
	786	puts $f $bytes
	787	close $f
	788	}
[2731]	789	$_image(plot) configure -data $bytes
[2744]	790	set time [clock seconds]
	791	set date [clock format $time]
[2731]	792	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
[2744]	793	if { $_start > 0 } {
	794	set finish [clock clicks -milliseconds]
	795	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
	796	set _start 0
	797	}
[2731]	798	} elseif { $info(type) == "print" } {
	799	set tag $this-print-$info(-token)
	800	set _hardcopy($tag) $bytes
	801	}
	802	}
	803
	804	#
	805	# ReceiveDataset --
	806	#
	807	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
	808	if { ![isconnected] } {
	809	return
	810	}
	811	set option [lindex $args 0]
	812	switch -- $option {
[2744]	813	"scalar" {
	814	set option [lindex $args 1]
	815	switch -- $option {
	816	"world" {
	817	foreach { x y z value tag } [lrange $args 2 end] break
	818	}
	819	"pixel" {
	820	foreach { x y value tag } [lrange $args 2 end] break
	821	}
	822	}
	823	}
	824	"vector" {
	825	set option [lindex $args 1]
	826	switch -- $option {
	827	"world" {
	828	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
	829	}
	830	"pixel" {
	831	foreach { x y vx vy vz tag } [lrange $args 2 end] break
	832	}
	833	}
	834	}
	835	"names" {
[2731]	836	foreach { name } [lindex $args 1] {
	837	#puts stderr "Dataset: $name"
	838	}
[2744]	839	}
	840	default {
	841	error "unknown dataset option \"$option\" from server"
	842	}
[2731]	843	}
	844	}
	845
	846	# ----------------------------------------------------------------------
	847	# USAGE: Rebuild
	848	#
	849	# Called automatically whenever something changes that affects the
	850	# data in the widget. Clears any existing data and rebuilds the
	851	# widget to display new data.
	852	# ----------------------------------------------------------------------
	853	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
	854	set w [winfo width $itk_component(view)]
	855	set h [winfo height $itk_component(view)]
	856	if { $w < 2 \|\| $h < 2 } {
[2744]	857	$_dispatcher event -idle !rebuild
	858	return
[2731]	859	}
	860
	861	# Turn on buffering of commands to the server. We don't want to
	862	# be preempted by a server disconnect/reconnect (which automatically
	863	# generates a new call to Rebuild).
[3498]	864	StartBufferingCommands
	865
[3330]	866	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
	867	set _width $w
	868	set _height $h
	869	$_arcball resize $w $h
	870	DoResize
	871	if { $_settings(stretchToFit) } {
[3413]	872	AdjustSetting stretchToFit
[3330]	873	}
[2731]	874	}
[3330]	875	if { $_reset } {
[3421]	876	if { $_reportClientInfo } {
[3392]	877	# Tell the server the name of the tool, the version, and dataset
	878	# that we are rendering. Have to do it here because we don't know
	879	# what data objects are using the renderer until be get here.
	880	global env
	881
	882	set info {}
	883	set user "???"
	884	if { [info exists env(USER)] } {
	885	set user $env(USER)
	886	}
	887	set session "???"
	888	if { [info exists env(SESSION)] } {
	889	set session $env(SESSION)
	890	}
	891	lappend info "hub" [exec hostname]
	892	lappend info "client" "vtkheightmapviewer"
	893	lappend info "user" $user
	894	lappend info "session" $session
	895	SendCmd "clientinfo [list $info]"
	896	}
[3330]	897	InitSettings isHeightmap background
	898	#
	899	# Reset the camera and other view parameters
	900	#
	901	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
	902	SendCmd "axis lrot z 90"
	903	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	904	$_arcball quaternion $q
	905	if {$_settings(isHeightmap) } {
	906	if { $_view(ortho)} {
	907	SendCmd "camera mode ortho"
	908	} else {
	909	SendCmd "camera mode persp"
	910	}
[3416]	911	SendCmd "camera reset"
	912	DoRotate
[3330]	913	}
	914	PanCamera
[3418]	915	SendCmd "imgflush"
[3330]	916	}
[2731]	917
	918	set _first ""
[3330]	919	# Start off with no datasets are visible.
	920	SendCmd "dataset visible 0"
	921	set scale [GetHeightmapScale]
[2731]	922	foreach dataobj [get -objects] {
[2744]	923	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
	924	set _first $dataobj
	925	}
	926	set _obj2datasets($dataobj) ""
[2731]	927	foreach comp [$dataobj components] {
	928	set tag $dataobj-$comp
	929	if { ![info exists _datasets($tag)] } {
[3330]	930	set bytes [$dataobj vtkdata $comp]
[3421]	931	if 0 {
[3392]	932	set f [open /tmp/vtkheightmap.vtk "w"]
	933	puts $f $bytes
	934	close $f
[3330]	935	}
[2731]	936	set length [string length $bytes]
[3421]	937	if { $_reportClientInfo } {
[3392]	938	set info {}
	939	lappend info "tool_id" [$dataobj hints toolId]
	940	lappend info "tool_name" [$dataobj hints toolName]
	941	lappend info "tool_version" [$dataobj hints toolRevision]
	942	lappend info "tool_title" [$dataobj hints toolTitle]
	943	lappend info "dataset_label" [$dataobj hints label]
	944	lappend info "dataset_size" $length
[3394]	945	lappend info "dataset_tag" $tag
[3392]	946	SendCmd [list "clientinfo" $info]
	947	}
[3421]	948	SendCmd "dataset add $tag data follows $length"
[2731]	949	append _outbuf $bytes
	950	set _datasets($tag) 1
[2744]	951	SetObjectStyle $dataobj $comp
	952	}
	953	lappend _obj2datasets($dataobj) $tag
	954	if { [info exists _obj2ovride($dataobj-raise)] } {
[3447]	955	# Setting dataset visible enables outline (if enabled)
	956	# and heightmap
	957	SendCmd "dataset visible 1 $tag"
[2744]	958	}
[3330]	959	if { ![info exists _comp2scale($tag)] \|\|
	960	$_comp2scale($tag) != $scale } {
	961	SendCmd "heightmap heightscale $scale $tag"
	962	set _comp2scale($tag) $scale
	963	}
[2731]	964	}
	965	}
[3405]	966	if { $_first != "" } {
[3330]	967	$itk_component(field) choices delete 0 end
	968	$itk_component(fieldmenu) delete 0 end
	969	array unset _fields
[3421]	970	set _curFldName ""
[3405]	971	foreach cname [$_first components] {
	972	foreach fname [$_first fieldnames $cname] {
	973	if { [info exists _fields($fname)] } {
	974	continue
	975	}
	976	foreach { label units components } \
	977	[$_first fieldinfo $fname] break
	978	$itk_component(field) choices insert end "$fname" "$label"
	979	$itk_component(fieldmenu) add radiobutton -label "$label" \
[3409]	980	-value $label -variable [itcl::scope _curFldLabel] \
[3405]	981	-selectcolor red \
	982	-activebackground $itk_option(-plotbackground) \
	983	-activeforeground $itk_option(-plotforeground) \
	984	-font "Arial 8" \
	985	-command [itcl::code $this Combo invoke]
	986	set _fields($fname) [list $label $units $components]
[3421]	987	if { $_curFldName == "" } {
	988	set _curFldName $fname
	989	set _curFldLabel $label
	990	}
[3405]	991	}
	992	}
[3409]	993	$itk_component(field) value $_curFldLabel
[2731]	994	}
[3454]	995	InitSettings stretchToFit
[2731]	996
[3330]	997	if { $_reset } {
	998	SendCmd "axis tickpos outside"
	999	foreach axis { x y z } {
	1000	SendCmd "axis lformat $axis %g"
	1001	}
[3409]	1002
[3330]	1003	foreach axis { x y z } {
	1004	set label [$_first hints ${axis}label]
	1005	if { $label == "" } {
	1006	if {$axis == "z"} {
[3445]	1007	if { [string match "component*" $_curFldName] } {
[3330]	1008	set label [string toupper $axis]
	1009	} else {
[3409]	1010	set label $_curFldLabel
[3330]	1011	}
	1012	} else {
	1013	set label [string toupper $axis]
	1014	}
	1015	}
	1016	# May be a space in the axis label.
	1017	SendCmd [list axis name $axis $label]
[2731]	1018
[3330]	1019	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
	1020	set units [lindex $_fields($_curFldName) 1]
	1021	} else {
	1022	set units [$_first hints ${axis}units]
	1023	}
	1024	if { $units != "" } {
	1025	# May be a space in the axis units.
	1026	SendCmd [list axis units $axis $units]
	1027	}
	1028	}
	1029	#
	1030	# Reset the camera and other view parameters
	1031	#
	1032	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
[3417]	1033	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
[3330]	1034	ResetAxes
	1035	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1036	$_arcball quaternion $q
	1037	if {$_settings(isHeightmap) } {
	1038	if { $_view(ortho)} {
	1039	SendCmd "camera mode ortho"
	1040	} else {
	1041	SendCmd "camera mode persp"
	1042	}
[3416]	1043	SendCmd "camera reset"
	1044	DoRotate
[3330]	1045	}
	1046	PanCamera
	1047	InitSettings axisXGrid axisYGrid axisZGrid \
	1048	axisVisible axisLabels
[3454]	1049	InitSettings heightmapScale field isHeightmap
[3421]	1050	if { [array size _fields] < 2 } {
	1051	blt::table forget $itk_component(field) $itk_component(field_l)
	1052	}
[3424]	1053	RequestLegend
[2744]	1054	set _reset 0
[2731]	1055	}
[3330]	1056	global readyForNextFrame
	1057	set readyForNextFrame 0; # Don't advance to the next frame
[2731]	1058
	1059	# Actually write the commands to the server socket. If it fails, we don't
	1060	# care. We're finished here.
	1061	blt::busy hold $itk_component(hull)
[3421]	1062	StopBufferingCommands
[2731]	1063	blt::busy release $itk_component(hull)
	1064	}
	1065
	1066	# ----------------------------------------------------------------------
	1067	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
	1068	#
	1069	# Returns a list of server IDs for the current datasets being displayed. This
	1070	# is normally a single ID, but it might be a list of IDs if the current data
	1071	# object has multiple components.
	1072	# ----------------------------------------------------------------------
	1073	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
	1074	set flag [lindex $args 0]
	1075	switch -- $flag {
[2744]	1076	"-all" {
	1077	if { [llength $args] > 1 } {
	1078	error "CurrentDatasets: can't specify dataobj after \"-all\""
	1079	}
	1080	set dlist [get -objects]
	1081	}
	1082	"-visible" {
	1083	if { [llength $args] > 1 } {
	1084	set dlist {}
	1085	set args [lrange $args 1 end]
	1086	foreach dataobj $args {
	1087	if { [info exists _obj2ovride($dataobj-raise)] } {
	1088	lappend dlist $dataobj
	1089	}
	1090	}
	1091	} else {
	1092	set dlist [get -visible]
	1093	}
	1094	}
	1095	default {
	1096	set dlist $args
	1097	}
[2731]	1098	}
	1099	set rlist ""
	1100	foreach dataobj $dlist {
[2744]	1101	foreach comp [$dataobj components] {
	1102	set tag $dataobj-$comp
	1103	if { [info exists _datasets($tag)] && $_datasets($tag) } {
	1104	lappend rlist $tag
	1105	}
	1106	}
[2731]	1107	}
	1108	return $rlist
	1109	}
	1110
	1111	# ----------------------------------------------------------------------
	1112	# USAGE: Zoom in
	1113	# USAGE: Zoom out
	1114	# USAGE: Zoom reset
	1115	#
	1116	# Called automatically when the user clicks on one of the zoom
	1117	# controls for this widget. Changes the zoom for the current view.
	1118	# ----------------------------------------------------------------------
	1119	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
	1120	switch -- $option {
	1121	"in" {
	1122	set _view(zoom) [expr {$_view(zoom)*1.25}]
[2744]	1123	SendCmd "camera zoom $_view(zoom)"
[2731]	1124	}
	1125	"out" {
	1126	set _view(zoom) [expr {$_view(zoom)*0.8}]
[2744]	1127	SendCmd "camera zoom $_view(zoom)"
[2731]	1128	}
	1129	"reset" {
	1130	array set _view {
[3330]	1131	qw 0.36
	1132	qx 0.25
	1133	qy 0.50
	1134	qz 0.70
[2731]	1135	zoom 1.0
[3330]	1136	xpan 0
	1137	ypan 0
[2731]	1138	}
	1139	if { $_first != "" } {
	1140	set location [$_first hints camera]
	1141	if { $location != "" } {
	1142	array set _view $location
	1143	}
	1144	}
[2744]	1145	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1146	$_arcball quaternion $q
[3416]	1147	SendCmd "camera reset"
	1148	if {$_settings(isHeightmap) } {
	1149	DoRotate
	1150	}
[2731]	1151	}
	1152	}
	1153	}
	1154
	1155	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
	1156	set x $_view(xpan)
	1157	set y $_view(ypan)
	1158	SendCmd "camera pan $x $y"
	1159	}
	1160
	1161
	1162	# ----------------------------------------------------------------------
	1163	# USAGE: Rotate click <x> <y>
	1164	# USAGE: Rotate drag <x> <y>
	1165	# USAGE: Rotate release <x> <y>
	1166	#
	1167	# Called automatically when the user clicks/drags/releases in the
	1168	# plot area. Moves the plot according to the user's actions.
	1169	# ----------------------------------------------------------------------
	1170	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
	1171	switch -- $option {
	1172	"click" {
	1173	$itk_component(view) configure -cursor fleur
	1174	set _click(x) $x
	1175	set _click(y) $y
	1176	}
	1177	"drag" {
	1178	if {[array size _click] == 0} {
	1179	Rotate click $x $y
	1180	} else {
	1181	set w [winfo width $itk_component(view)]
	1182	set h [winfo height $itk_component(view)]
	1183	if {$w <= 0 \|\| $h <= 0} {
	1184	return
	1185	}
	1186
	1187	if {[catch {
	1188	# this fails sometimes for no apparent reason
	1189	set dx [expr {double($x-$_click(x))/$w}]
	1190	set dy [expr {double($y-$_click(y))/$h}]
	1191	}]} {
	1192	return
	1193	}
[2744]	1194	if { $dx == 0 && $dy == 0 } {
	1195	return
	1196	}
	1197	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
	1198	EventuallyRotate $q
[2731]	1199	set _click(x) $x
	1200	set _click(y) $y
	1201	}
	1202	}
	1203	"release" {
	1204	Rotate drag $x $y
	1205	$itk_component(view) configure -cursor ""
	1206	catch {unset _click}
	1207	}
	1208	default {
	1209	error "bad option \"$option\": should be click, drag, release"
	1210	}
	1211	}
	1212	}
	1213
	1214	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
	1215	foreach tag [CurrentDatasets -visible] {
	1216	SendCmd "dataset getscalar pixel $x $y $tag"
	1217	}
	1218	}
	1219
	1220	# ----------------------------------------------------------------------
	1221	# USAGE: $this Pan click x y
	1222	# $this Pan drag x y
	1223	# $this Pan release x y
	1224	#
	1225	# Called automatically when the user clicks on one of the zoom
	1226	# controls for this widget. Changes the zoom for the current view.
	1227	# ----------------------------------------------------------------------
	1228	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
	1229	switch -- $option {
[2744]	1230	"set" {
	1231	set w [winfo width $itk_component(view)]
	1232	set h [winfo height $itk_component(view)]
	1233	set x [expr $x / double($w)]
	1234	set y [expr $y / double($h)]
	1235	set _view(xpan) [expr $_view(xpan) + $x]
	1236	set _view(ypan) [expr $_view(ypan) + $y]
	1237	PanCamera
	1238	return
	1239	}
	1240	"click" {
	1241	set _click(x) $x
	1242	set _click(y) $y
	1243	$itk_component(view) configure -cursor hand1
	1244	}
	1245	"drag" {
	1246	if { ![info exists _click(x)] } {
	1247	set _click(x) $x
	1248	}
	1249	if { ![info exists _click(y)] } {
	1250	set _click(y) $y
	1251	}
	1252	set w [winfo width $itk_component(view)]
	1253	set h [winfo height $itk_component(view)]
	1254	set dx [expr ($_click(x) - $x)/double($w)]
	1255	set dy [expr ($_click(y) - $y)/double($h)]
	1256	set _click(x) $x
	1257	set _click(y) $y
	1258	set _view(xpan) [expr $_view(xpan) - $dx]
	1259	set _view(ypan) [expr $_view(ypan) - $dy]
	1260	PanCamera
	1261	}
	1262	"release" {
	1263	Pan drag $x $y
	1264	$itk_component(view) configure -cursor ""
	1265	}
	1266	default {
	1267	error "unknown option \"$option\": should set, click, drag, or release"
	1268	}
[2731]	1269	}
	1270	}
	1271
	1272	# ----------------------------------------------------------------------
	1273	# USAGE: InitSettings <what> ?<value>?
	1274	#
	1275	# Used internally to update rendering settings whenever parameters
	1276	# change in the popup settings panel. Sends the new settings off
	1277	# to the back end.
	1278	# ----------------------------------------------------------------------
	1279	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
	1280	foreach spec $args {
[2744]	1281	if { [info exists _settings($_first-$spec)] } {
	1282	# Reset global setting with dataobj specific setting
	1283	set _settings($spec) $_settings($_first-$spec)
	1284	}
	1285	AdjustSetting $spec
[2731]	1286	}
	1287	}
	1288
	1289	#
	1290	# AdjustSetting --
	1291	#
[2744]	1292	# Changes/updates a specific setting in the widget. There are
	1293	# usually user-setable option. Commands are sent to the render
	1294	# server.
[2731]	1295	#
	1296	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
[3330]	1297	if { $_beforeConnect } {
[2744]	1298	return
[2731]	1299	}
	1300	switch -- $what {
[3330]	1301	"axisFlymode" {
	1302	set mode [$itk_component(axisflymode) value]
	1303	set mode [$itk_component(axisflymode) translate $mode]
[2744]	1304	set _settings($what) $mode
	1305	SendCmd "axis flymode $mode"
[2731]	1306	}
[3417]	1307	"axisLabels" {
	1308	set bool $_settings(axisLabels)
	1309	SendCmd "axis labels all $bool"
	1310	}
[3330]	1311	"axisMinorTicks" {
	1312	set bool $_settings(axisMinorTicks)
	1313	foreach axis { x y z } {
	1314	SendCmd "axis minticks ${axis} $bool"
	1315	}
[2731]	1316	}
[3417]	1317	"axisVisible" {
	1318	set bool $_settings(axisVisible)
	1319	SendCmd "axis visible all $bool"
[2731]	1320	}
[3417]	1321	"axisXGrid" - "axisYGrid" - "axisZGrid" {
	1322	set axis [string tolower [string range $what 4 4]]
[2744]	1323	set bool $_settings($what)
[3417]	1324	SendCmd "axis grid $axis $bool"
[2731]	1325	}
[3330]	1326	"background" {
	1327	set bgcolor [$itk_component(background) value]
	1328	array set fgcolors {
	1329	"black" "white"
	1330	"white" "black"
	1331	"grey" "black"
	1332	}
	1333	configure -plotbackground $bgcolor \
	1334	-plotforeground $fgcolors($bgcolor)
	1335	$itk_component(view) delete "legend"
[3421]	1336	DrawLegend
[2731]	1337	}
[3330]	1338	"colormap" {
[3454]	1339	set _changed(colormap) 1
[3421]	1340	StartBufferingCommands
[3330]	1341	set color [$itk_component(colormap) value]
	1342	set _settings(colormap) $color
	1343	if { $color == "none" } {
	1344	if { $_settings(colormapVisible) } {
	1345	SendCmd "heightmap surface 0"
	1346	set _settings(colormapVisible) 0
	1347	}
	1348	} else {
	1349	if { !$_settings(colormapVisible) } {
	1350	SendCmd "heightmap surface 1"
	1351	set _settings(colormapVisible) 1
	1352	}
[3454]	1353	SetCurrentColormap $color
[3462]	1354	if {$_settings(colormapDiscrete)} {
	1355	set numColors [expr $_settings(numIsolines) - 1]
	1356	SendCmd "colormap res $numColors $color"
	1357	}
[3330]	1358	}
[3421]	1359	#SendCmd "heightmap colormode scalar $_curFldName"
	1360	#SendCmd "dataset scalar $_curFldName"
	1361	StopBufferingCommands
[3330]	1362	EventuallyRequestLegend
[2744]	1363	}
[3417]	1364	"colormapVisible" {
	1365	set bool $_settings($what)
	1366	SendCmd "heightmap surface $bool"
[2731]	1367	}
[3462]	1368	"colormapDiscrete" {
	1369	set bool $_settings($what)
	1370	set numColors [expr $_settings(numIsolines) - 1]
	1371	StartBufferingCommands
	1372	if {$bool} {
	1373	SendCmd "colormap res $numColors"
	1374	} else {
	1375	SendCmd "colormap res default"
	1376	}
	1377	SendCmd "heightmap preinterp $bool"
	1378	StopBufferingCommands
	1379	EventuallyRequestLegend
	1380	}
[3417]	1381	"edges" {
	1382	set bool $_settings(edges)
	1383	SendCmd "heightmap edges $bool"
[2731]	1384	}
[3330]	1385	"field" {
[3409]	1386	set label [$itk_component(field) value]
	1387	set fname [$itk_component(field) translate $label]
	1388	set _settings(field) $fname
	1389	if { [info exists _fields($fname)] } {
	1390	foreach { label units components } $_fields($fname) break
	1391	if { $components > 1 } {
	1392	set _colorMode vmag
	1393	} else {
	1394	set _colorMode scalar
	1395	}
	1396	set _curFldName $fname
	1397	set _curFldLabel $label
[2744]	1398	} else {
[3409]	1399	puts stderr "unknown field \"$fname\""
[2744]	1400	return
[2731]	1401	}
[3421]	1402	set label [$_first hints zlabel]
	1403	if { $label == "" } {
[3445]	1404	if { [string match "component*" $_curFldName] } {
[3421]	1405	set label Z
	1406	} else {
	1407	set label $_curFldLabel
	1408	}
	1409	}
	1410	# May be a space in the axis label.
	1411	SendCmd [list axis name z $label]
	1412
	1413	if { [$_first hints zunits] == "" } {
	1414	set units [lindex $_fields($_curFldName) 1]
	1415	} else {
	1416	set units [$_first hints zunits]
	1417	}
	1418	if { $units != "" } {
	1419	# May be a space in the axis units.
[3459]	1420	SendCmd [list axis units z $units]
[3421]	1421	}
	1422	# Get the new limits because the field changed.
	1423	ResetAxes
[3433]	1424	SendCmd "dataset scalar $_curFldName"
	1425	SendCmd "heightmap colormode scalar $_curFldName"
[3421]	1426	SendCmd "camera reset"
	1427	DrawLegend
[3330]	1428	}
[3417]	1429	"heightmapScale" {
	1430	if { $_settings(isHeightmap) } {
	1431	set scale [GetHeightmapScale]
	1432	foreach dataset [CurrentDatasets -all] {
	1433	SendCmd "heightmap heightscale $scale $dataset"
	1434	set _comp2scale($dataset) $scale
[3330]	1435	}
[3417]	1436	ResetAxes
[3330]	1437	}
[3417]	1438	}
[3330]	1439	"isHeightmap" {
	1440	set bool $_settings(isHeightmap)
[3417]	1441	set c $itk_component(view)
[3421]	1442	StartBufferingCommands
[3417]	1443	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
	1444	if { $bool } {
	1445	set _settings(heightmapScale) 50
	1446	set _settings(opacity) $_settings(saveOpacity)
	1447	set _settings(lighting) $_settings(saveLighting)
	1448	} else {
	1449	set _settings(heightmapScale) 0
	1450	set _settings(lighting) 0
	1451	set _settings(opacity) 100
	1452	}
	1453	AdjustSetting lighting
	1454	AdjustSetting opacity
	1455	set scale [GetHeightmapScale]
	1456	foreach dataset [CurrentDatasets -all] {
	1457	SendCmd "heightmap heightscale $scale $dataset"
	1458	set _comp2scale($dataset) $scale
	1459	}
[3330]	1460	if { $bool } {
	1461	$itk_component(lighting) configure -state normal
[3417]	1462	$itk_component(opacity) configure -state normal
	1463	$itk_component(scale) configure -state normal
	1464	$itk_component(opacity_l) configure -state normal
	1465	$itk_component(scale_l) configure -state normal
[3416]	1466	if {$_view(ortho)} {
	1467	SendCmd "camera mode ortho"
	1468	} else {
	1469	SendCmd "camera mode persp"
	1470	}
[3330]	1471	} else {
	1472	$itk_component(lighting) configure -state disabled
[3417]	1473	$itk_component(opacity) configure -state disabled
	1474	$itk_component(scale) configure -state disabled
	1475	$itk_component(opacity_l) configure -state disabled
	1476	$itk_component(scale_l) configure -state disabled
[3418]	1477	SendCmd "camera mode image"
[3330]	1478	}
	1479	if {$_settings(stretchToFit)} {
	1480	if {$scale == 0} {
	1481	SendCmd "camera aspect window"
	1482	} else {
	1483	SendCmd "camera aspect square"
	1484	}
	1485	}
[3420]	1486	ResetAxes
[3417]	1487	SendCmd "camera reset"
	1488	if { $bool } {
	1489	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
	1490	$_arcball quaternion $q
	1491	SendCmd "camera orient $q"
	1492	} else {
	1493	bind $c <ButtonPress-1> {}
	1494	bind $c <B1-Motion> {}
	1495	bind $c <ButtonRelease-1> {}
	1496	}
[3330]	1497	# Fix the mouse bindings for rotation/panning and the
	1498	# camera mode. Ideally we'd create a bindtag for these.
	1499	if { $bool } {
	1500	# Bindings for rotation via mouse
	1501	bind $c <ButtonPress-1> \
	1502	[itcl::code $this Rotate click %x %y]
	1503	bind $c <B1-Motion> \
	1504	[itcl::code $this Rotate drag %x %y]
	1505	bind $c <ButtonRelease-1> \
	1506	[itcl::code $this Rotate release %x %y]
	1507	}
[3421]	1508	StopBufferingCommands
[2731]	1509	}
[3417]	1510	"isolineColor" {
	1511	set color [$itk_component(isolinecolor) value]
	1512	if { $color == "none" } {
	1513	if { $_settings(isolinesVisible) } {
	1514	SendCmd "heightmap isolines 0"
	1515	set _settings(isolinesVisible) 0
	1516	}
	1517	} else {
	1518	if { !$_settings(isolinesVisible) } {
	1519	SendCmd "heightmap isolines 1"
	1520	set _settings(isolinesVisible) 1
	1521	}
	1522	SendCmd "heightmap isolinecolor [Color2RGB $color]"
	1523	}
[3421]	1524	DrawLegend
[3417]	1525	}
	1526	"isolinesVisible" {
	1527	set bool $_settings($what)
	1528	SendCmd "heightmap isolines $bool"
[3421]	1529	DrawLegend
[3417]	1530	}
[3330]	1531	"legendVisible" {
[3417]	1532	if { !$_settings($what) } {
[3330]	1533	$itk_component(view) delete legend
	1534	}
[3421]	1535	DrawLegend
[3330]	1536	}
[3417]	1537	"lighting" {
	1538	if { $_settings(isHeightmap) } {
	1539	set _settings(saveLighting) $_settings(lighting)
	1540	set bool $_settings($what)
	1541	SendCmd "heightmap lighting $bool"
	1542	} else {
	1543	SendCmd "heightmap lighting 0"
	1544	}
	1545	}
	1546	"numIsolines" {
[3454]	1547	set _changed(numIsolines) 1
[3417]	1548	set _settings(numIsolines) [$itk_component(numisolines) value]
[3454]	1549	set _currentNumIsolines $_settings(numIsolines)
[3417]	1550	SendCmd "heightmap numcontours $_settings(numIsolines)"
[3462]	1551	if {$_settings(colormapDiscrete)} {
	1552	set numColors [expr $_settings(numIsolines) - 1]
	1553	SendCmd "colormap res $numColors"
	1554	EventuallyRequestLegend
	1555	} else {
	1556	DrawLegend
	1557	}
[3417]	1558	}
	1559	"opacity" {
[3454]	1560	set _changed(opacity) 1
[3417]	1561	if { $_settings(isHeightmap) } {
	1562	set _settings(saveOpacity) $_settings(opacity)
	1563	set val $_settings(opacity)
	1564	set sval [expr { 0.01 * double($val) }]
	1565	SendCmd "heightmap opacity $sval"
	1566	} else {
	1567	SendCmd "heightmap opacity 1"
	1568	}
	1569	}
	1570	"outline" {
	1571	set bool $_settings($what)
	1572	SendCmd "dataset outline $bool"
	1573	}
	1574	"stretchToFit" {
	1575	set bool $_settings($what)
	1576	if { $bool } {
	1577	set heightScale [GetHeightmapScale]
	1578	if {$heightScale == 0} {
	1579	SendCmd "camera aspect window"
	1580	} else {
	1581	SendCmd "camera aspect square"
	1582	}
	1583	} else {
	1584	SendCmd "camera aspect native"
	1585	}
	1586	}
	1587	"wireframe" {
	1588	set bool $_settings($what)
	1589	SendCmd "heightmap wireframe $bool"
	1590	}
[3330]	1591	default {
[2731]	1592	error "don't know how to fix $what"
	1593	}
	1594	}
	1595	}
	1596
	1597	#
	1598	# RequestLegend --
	1599	#
[2744]	1600	# Request a new legend from the server. The size of the legend
[3330]	1601	# is determined from the height of the canvas.
[2731]	1602	#
[3330]	1603	# This should be called when
	1604	# 1. A new current colormap is set.
	1605	# 2. Window is resized.
	1606	# 3. The limits of the data have changed. (Just need a redraw).
	1607	# 4. Number of isolines have changed. (Just need a redraw).
	1608	# 5. Legend becomes visible (Just need a redraw).
	1609	#
[2731]	1610	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
[3330]	1611	set _legendPending 0
[2731]	1612	set font "Arial 8"
[3421]	1613	set w 12
[2731]	1614	set lineht [font metrics $font -linespace]
[3421]	1615	# color ramp height = (canvas height) - (min and max value lines) - 2
[3330]	1616	set h [expr {$_height - 2 * ($lineht + 2)}]
[3421]	1617	set _legendHeight $h
	1618
	1619	set fname $_curFldName
[3445]	1620	if { [string match "component*" $fname] } {
[3421]	1621	set title ""
	1622	} else {
	1623	if { [info exists _fields($fname)] } {
	1624	foreach { title units } $_fields($fname) break
	1625	if { $units != "" } {
	1626	set title [format "%s (%s)" $title $units]
	1627	}
	1628	} else {
	1629	set title $fname
	1630	}
	1631	}
	1632	# If there's a title too, substract one more line
	1633	if { $title != "" } {
	1634	incr h -$lineht
	1635	}
[2731]	1636	if { $h < 1} {
[2744]	1637	return
[2731]	1638	}
	1639	# Set the legend on the first heightmap dataset.
[3330]	1640	if { $_currentColormap != "" } {
	1641	set cmap $_currentColormap
[3421]	1642	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
	1643	#SendCmd "heightmap colormode scalar $_curFldName"
	1644	#SendCmd "dataset scalar $_curFldName"
[2731]	1645	}
	1646	}
	1647
	1648	#
[3330]	1649	# ResetAxes --
[2731]	1650	#
[3330]	1651	# Set axis z bounds and range
	1652	#
	1653	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
[3445]	1654	if { ![info exists _limits($_curFldName)]} {
[3330]	1655	SendCmd "dataset maprange all"
	1656	SendCmd "axis autorange z on"
	1657	SendCmd "axis autobounds z on"
	1658	return
[2731]	1659	}
[3330]	1660	foreach { xmin xmax } $_limits(x) break
	1661	foreach { ymin ymax } $_limits(y) break
[3428]	1662	foreach { vmin vmax } $_limits($_curFldName) break
[3434]	1663
	1664	global tcl_precision
	1665	set tcl_precision 17
	1666	set xr [expr $xmax - $xmin]
	1667	set yr [expr $ymax - $ymin]
	1668	set vr [expr $vmax - $vmin]
	1669	set r [expr ($yr > $xr) ? $yr : $xr]
	1670	if { $vr < 1.0e-17 } {
[3330]	1671	set dataScale 1.0
	1672	} else {
[3434]	1673	set dataScale [expr $r / $vr]
[3330]	1674	}
	1675	set heightScale [GetHeightmapScale]
[3434]	1676	set bmin [expr $heightScale * $dataScale * $vmin]
	1677	set bmax [expr $heightScale * $dataScale * $vmax]
[3428]	1678	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
[3434]	1679	SendCmd "axis bounds z $bmin $bmax"
[3428]	1680	SendCmd "axis range z $_limits($_curFldName)"
[2731]	1681	}
	1682
	1683	#
[3330]	1684	# SetCurrentColormap --
[2731]	1685	#
[3454]	1686	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
	1687	# Keep track of the colormaps that we build.
[2731]	1688	if { ![info exists _colormaps($name)] } {
[3454]	1689	BuildColormap $name
	1690	set _colormaps($name) 1
[2731]	1691	}
[3330]	1692	set _currentColormap $name
[3454]	1693	SendCmd "heightmap colormap $_currentColormap"
[2731]	1694	}
	1695
	1696
	1697	#
	1698	# BuildColormap --
	1699	#
[3454]	1700	# Build the designated colormap on the server.
	1701	#
	1702	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
	1703	set cmap [ColorsToColormap $name]
[2731]	1704	if { [llength $cmap] == 0 } {
[2744]	1705	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
[2731]	1706	}
	1707	set wmap "0.0 1.0 1.0 1.0"
	1708	SendCmd "colormap add $name { $cmap } { $wmap }"
	1709	}
	1710
	1711	# ----------------------------------------------------------------------
[3330]	1712	# CONFIGURATION OPTION: -mode
	1713	# ----------------------------------------------------------------------
	1714	itcl::configbody Rappture::VtkHeightmapViewer::mode {
	1715	switch -- $itk_option(-mode) {
	1716	"heightmap" {
	1717	set _settings(isHeightmap) 1
	1718	}
	1719	"contour" {
	1720	set _settings(isHeightmap) 0
	1721	}
	1722	default {
	1723	error "unknown mode settings \"$itk_option(-mode)\""
	1724	}
	1725	}
	1726	AdjustSetting isHeightmap
	1727	}
	1728
	1729	# ----------------------------------------------------------------------
[2731]	1730	# CONFIGURATION OPTION: -plotbackground
	1731	# ----------------------------------------------------------------------
	1732	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
	1733	if { [isconnected] } {
[3355]	1734	set rgb [Color2RGB $itk_option(-plotbackground)]
	1735	SendCmd "screen bgcolor $rgb"
[3330]	1736	$itk_component(view) configure -background $itk_option(-plotbackground)
[2731]	1737	}
	1738	}
	1739
	1740	# ----------------------------------------------------------------------
	1741	# CONFIGURATION OPTION: -plotforeground
	1742	# ----------------------------------------------------------------------
	1743	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
	1744	if { [isconnected] } {
[3355]	1745	set rgb [Color2RGB $itk_option(-plotforeground)]
	1746	SendCmd "dataset color $rgb"
	1747	SendCmd "axis color all $rgb"
[2731]	1748	}
	1749	}
	1750
[3428]	1751	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
[3330]	1752	lappend limits x [$dataobj limits x]
	1753	lappend limits y [$dataobj limits y]
[3421]	1754	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
	1755	set vlim [$dataobj limits v]
	1756	}
	1757	lappend limits v $vlim
[3330]	1758	return $limits
[2731]	1759	}
	1760
[3330]	1761	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
[2731]	1762
	1763	set fg [option get $itk_component(hull) font Font]
	1764	#set bfg [option get $itk_component(hull) boldFont Font]
	1765
	1766	set inner [$itk_component(main) insert end \
[3417]	1767	-title "Contour/Surface Settings" \
	1768	-icon [Rappture::icon contour]]
[2731]	1769	$inner configure -borderwidth 4
	1770
[3330]	1771	checkbutton $inner.legend \
	1772	-text "Legend" \
	1773	-variable [itcl::scope _settings(legendVisible)] \
	1774	-command [itcl::code $this AdjustSetting legendVisible] \
[2731]	1775	-font "Arial 9"
	1776
	1777	checkbutton $inner.wireframe \
[3330]	1778	-text "Wireframe" \
	1779	-variable [itcl::scope _settings(wireframe)] \
	1780	-command [itcl::code $this AdjustSetting wireframe] \
[2731]	1781	-font "Arial 9"
	1782
[3330]	1783	itk_component add lighting {
	1784	checkbutton $inner.lighting \
	1785	-text "Enable Lighting" \
	1786	-variable [itcl::scope _settings(lighting)] \
	1787	-command [itcl::code $this AdjustSetting lighting] \
	1788	-font "Arial 9"
	1789	} {
	1790	ignore -font
	1791	}
[2731]	1792	checkbutton $inner.edges \
[3330]	1793	-text "Edges" \
	1794	-variable [itcl::scope _settings(edges)] \
	1795	-command [itcl::code $this AdjustSetting edges] \
[2731]	1796	-font "Arial 9"
	1797
[3330]	1798	checkbutton $inner.outline \
	1799	-text "Outline" \
	1800	-variable [itcl::scope _settings(outline)] \
	1801	-command [itcl::code $this AdjustSetting outline] \
	1802	-font "Arial 9"
[2731]	1803
[3330]	1804	checkbutton $inner.stretch \
	1805	-text "Stretch to fit" \
	1806	-variable [itcl::scope _settings(stretchToFit)] \
	1807	-command [itcl::code $this AdjustSetting stretchToFit] \
	1808	-font "Arial 9"
[2731]	1809
[3421]	1810	checkbutton $inner.isolines \
	1811	-text "Isolines" \
	1812	-variable [itcl::scope _settings(isolinesVisible)] \
	1813	-command [itcl::code $this AdjustSetting isolinesVisible] \
	1814	-font "Arial 9"
	1815
[3462]	1816	checkbutton $inner.colormapDiscrete \
	1817	-text "Discrete Colormap" \
	1818	-variable [itcl::scope _settings(colormapDiscrete)] \
	1819	-command [itcl::code $this AdjustSetting colormapDiscrete] \
	1820	-font "Arial 9"
	1821
[3421]	1822	itk_component add field_l {
	1823	label $inner.field_l -text "Field" -font "Arial 9"
	1824	} {
	1825	ignore -font
	1826	}
[2731]	1827	itk_component add field {
[2744]	1828	Rappture::Combobox $inner.field -width 10 -editable no
[2731]	1829	}
	1830	bind $inner.field <<Value>> \
[3330]	1831	[itcl::code $this AdjustSetting field]
[2731]	1832
[3330]	1833	label $inner.colormap_l -text "Colormap" -font "Arial 9"
	1834	itk_component add colormap {
	1835	Rappture::Combobox $inner.colormap -width 10 -editable no
[2731]	1836	}
[3330]	1837	$inner.colormap choices insert end \
[2744]	1838	"BCGYR" "BCGYR" \
	1839	"BGYOR" "BGYOR" \
	1840	"blue" "blue" \
	1841	"blue-to-brown" "blue-to-brown" \
	1842	"blue-to-orange" "blue-to-orange" \
	1843	"blue-to-grey" "blue-to-grey" \
	1844	"green-to-magenta" "green-to-magenta" \
	1845	"greyscale" "greyscale" \
	1846	"nanohub" "nanohub" \
	1847	"rainbow" "rainbow" \
	1848	"spectral" "spectral" \
	1849	"ROYGB" "ROYGB" \
	1850	"RYGCB" "RYGCB" \
	1851	"brown-to-blue" "brown-to-blue" \
	1852	"grey-to-blue" "grey-to-blue" \
[3330]	1853	"orange-to-blue" "orange-to-blue" \
	1854	"none" "none"
[2731]	1855
[3330]	1856	$itk_component(colormap) value "BCGYR"
	1857	bind $inner.colormap <<Value>> \
	1858	[itcl::code $this AdjustSetting colormap]
[2731]	1859
[3421]	1860	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
[3330]	1861	itk_component add isolinecolor {
	1862	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
	1863	}
	1864	$inner.isolinecolor choices insert end \
	1865	"black" "black" \
	1866	"blue" "blue" \
	1867	"cyan" "cyan" \
	1868	"green" "green" \
	1869	"grey" "grey" \
	1870	"magenta" "magenta" \
	1871	"orange" "orange" \
	1872	"red" "red" \
	1873	"white" "white" \
	1874	"none" "none"
	1875
	1876	$itk_component(isolinecolor) value "black"
	1877	bind $inner.isolinecolor <<Value>> \
	1878	[itcl::code $this AdjustSetting isolineColor]
	1879
[3421]	1880	label $inner.background_l -text "Background Color" -font "Arial 9"
[3330]	1881	itk_component add background {
	1882	Rappture::Combobox $inner.background -width 10 -editable no
	1883	}
	1884	$inner.background choices insert end \
	1885	"black" "black" \
	1886	"white" "white" \
	1887	"grey" "grey"
	1888
	1889	$itk_component(background) value "white"
	1890	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
	1891
[3417]	1892	itk_component add opacity_l {
	1893	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1894	} {
	1895	ignore -font
	1896	}
	1897	itk_component add opacity {
	1898	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
	1899	-variable [itcl::scope _settings(opacity)] \
	1900	-showvalue off \
	1901	-command [itcl::code $this AdjustSetting opacity]
	1902	}
	1903	itk_component add scale_l {
	1904	label $inner.scale_l -text "Scale" -font "Arial 9"
	1905	} {
	1906	ignore -font
	1907	}
	1908	itk_component add scale {
	1909	::scale $inner.scale -from 0 -to 100 -orient horizontal \
	1910	-variable [itcl::scope _settings(heightmapScale)] \
	1911	-showvalue off \
	1912	-command [itcl::code $this AdjustSetting heightmapScale]
	1913	}
[3421]	1914	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
[3417]	1915	itk_component add numisolines {
	1916	Rappture::Spinint $inner.numisolines \
[3444]	1917	-min 2 -max 50 -font "arial 9"
[3417]	1918	}
	1919	$itk_component(numisolines) value $_settings(numIsolines)
	1920	bind $itk_component(numisolines) <<Value>> \
	1921	[itcl::code $this AdjustSetting numIsolines]
[3330]	1922
[3421]	1923	frame $inner.separator -height 2 -relief sunken -bd 1
[2731]	1924	blt::table $inner \
[3421]	1925	0,0 $inner.field_l -anchor w -pady 2 \
	1926	0,1 $inner.field -anchor w -pady 2 -fill x \
	1927	1,0 $inner.colormap_l -anchor w -pady 2 \
	1928	1,1 $inner.colormap -anchor w -pady 2 -fill x \
	1929	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
	1930	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
	1931	3,0 $inner.background_l -anchor w -pady 2 \
	1932	3,1 $inner.background -anchor w -pady 2 -fill x \
	1933	4,0 $inner.numisolines_l -anchor w -pady 2 \
	1934	4,1 $inner.numisolines -anchor w -pady 2 \
	1935	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
	1936	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
	1937	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
[3462]	1938	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
	1939	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
	1940	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
	1941	11,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
	1942	12,0 $inner.separator -padx 2 -fill x -cspan 2 \
	1943	13,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
	1944	14,0 $inner.opacity_l -anchor w -pady 2 \
	1945	14,1 $inner.opacity -fill x -pady 2 \
	1946	15,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
	1947	15,1 $inner.scale -fill x -pady 2 -cspan 2 \
[2731]	1948
	1949	blt::table configure $inner r* c* -resize none
[3462]	1950	blt::table configure $inner r16 c1 -resize expand
[2731]	1951	}
	1952
	1953	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
	1954
	1955	set fg [option get $itk_component(hull) font Font]
	1956	#set bfg [option get $itk_component(hull) boldFont Font]
	1957
	1958	set inner [$itk_component(main) insert end \
	1959	-title "Axis Settings" \
	1960	-icon [Rappture::icon axis1]]
	1961	$inner configure -borderwidth 4
	1962
	1963	checkbutton $inner.visible \
[3330]	1964	-text "Axes" \
	1965	-variable [itcl::scope _settings(axisVisible)] \
	1966	-command [itcl::code $this AdjustSetting axisVisible] \
[2731]	1967	-font "Arial 9"
	1968	checkbutton $inner.labels \
[3330]	1969	-text "Axis Labels" \
	1970	-variable [itcl::scope _settings(axisLabels)] \
	1971	-command [itcl::code $this AdjustSetting axisLabels] \
[2731]	1972	-font "Arial 9"
[3330]	1973	label $inner.grid_l -text "Grid" -font "Arial 9"
	1974	checkbutton $inner.xgrid \
	1975	-text "X" \
	1976	-variable [itcl::scope _settings(axisXGrid)] \
	1977	-command [itcl::code $this AdjustSetting axisXGrid] \
[2731]	1978	-font "Arial 9"
[3330]	1979	checkbutton $inner.ygrid \
	1980	-text "Y" \
	1981	-variable [itcl::scope _settings(axisYGrid)] \
	1982	-command [itcl::code $this AdjustSetting axisYGrid] \
[2731]	1983	-font "Arial 9"
[3330]	1984	checkbutton $inner.zgrid \
	1985	-text "Z" \
	1986	-variable [itcl::scope _settings(axisZGrid)] \
	1987	-command [itcl::code $this AdjustSetting axisZGrid] \
[2731]	1988	-font "Arial 9"
[3330]	1989	checkbutton $inner.minorticks \
	1990	-text "Minor Ticks" \
	1991	-variable [itcl::scope _settings(axisMinorTicks)] \
	1992	-command [itcl::code $this AdjustSetting axisMinorTicks] \
	1993	-font "Arial 9"
[2731]	1994
[3330]	1995
[2731]	1996	label $inner.mode_l -text "Mode" -font "Arial 9"
	1997
[3330]	1998	itk_component add axisflymode {
[2744]	1999	Rappture::Combobox $inner.mode -width 10 -editable no
[2731]	2000	}
	2001	$inner.mode choices insert end \
	2002	"static_triad" "static" \
	2003	"closest_triad" "closest" \
	2004	"furthest_triad" "furthest" \
	2005	"outer_edges" "outer"
[3330]	2006	$itk_component(axisflymode) value "static"
	2007	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
[2731]	2008
	2009	blt::table $inner \
[3330]	2010	0,0 $inner.visible -anchor w -cspan 4 \
	2011	1,0 $inner.labels -anchor w -cspan 4 \
	2012	2,0 $inner.minorticks -anchor w -cspan 4 \
	2013	4,0 $inner.grid_l -anchor w \
	2014	4,1 $inner.xgrid -anchor w \
	2015	4,2 $inner.ygrid -anchor w \
	2016	4,3 $inner.zgrid -anchor w \
	2017	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
	2018	5,1 $inner.mode -fill x -cspan 3
[2731]	2019
	2020	blt::table configure $inner r* c* -resize none
[3330]	2021	blt::table configure $inner r7 c6 -resize expand
	2022	blt::table configure $inner r3 -height 0.125i
[2731]	2023	}
	2024
	2025
	2026	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
	2027	set inner [$itk_component(main) insert end \
	2028	-title "Camera Settings" \
	2029	-icon [Rappture::icon camera]]
	2030	$inner configure -borderwidth 4
	2031
	2032	set labels { qx qy qz qw xpan ypan zoom }
	2033	set row 0
	2034	foreach tag $labels {
	2035	label $inner.${tag}label -text $tag -font "Arial 9"
	2036	entry $inner.${tag} -font "Arial 9" -bg white \
	2037	-textvariable [itcl::scope _view($tag)]
[3454]	2038	bind $inner.${tag} <Return> \
[2731]	2039	[itcl::code $this camera set ${tag}]
[3454]	2040	bind $inner.${tag} <KP_Enter> \
	2041	[itcl::code $this camera set ${tag}]
[2731]	2042	blt::table $inner \
	2043	$row,0 $inner.${tag}label -anchor e -pady 2 \
	2044	$row,1 $inner.${tag} -anchor w -pady 2
	2045	blt::table configure $inner r$row -resize none
	2046	incr row
	2047	}
	2048	checkbutton $inner.ortho \
	2049	-text "Orthographic Projection" \
	2050	-variable [itcl::scope _view(ortho)] \
	2051	-command [itcl::code $this camera set ortho] \
	2052	-font "Arial 9"
	2053	blt::table $inner \
[3441]	2054	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
[2731]	2055	blt::table configure $inner r$row -resize none
	2056	incr row
	2057
	2058	blt::table configure $inner c0 c1 -resize none
	2059	blt::table configure $inner c2 -resize expand
	2060	blt::table configure $inner r$row -resize expand
	2061	}
	2062
	2063	#
	2064	# camera --
	2065	#
	2066	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
	2067	switch -- $option {
	2068	"show" {
	2069	puts [array get _view]
	2070	}
	2071	"set" {
	2072	set who [lindex $args 0]
	2073	set x $_view($who)
	2074	set code [catch { string is double $x } result]
	2075	if { $code != 0 \|\| !$result } {
	2076	return
	2077	}
	2078	switch -- $who {
	2079	"ortho" {
	2080	if {$_view(ortho)} {
	2081	SendCmd "camera mode ortho"
	2082	} else {
	2083	SendCmd "camera mode persp"
	2084	}
	2085	}
	2086	"xpan" - "ypan" {
	2087	PanCamera
	2088	}
	2089	"qx" - "qy" - "qz" - "qw" {
	2090	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
[2744]	2091	$_arcball quaternion $q
	2092	EventuallyRotate $q
[2731]	2093	}
	2094	"zoom" {
	2095	SendCmd "camera zoom $_view(zoom)"
	2096	}
	2097	}
	2098	}
	2099	}
	2100	}
	2101
	2102	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
	2103	set bytes ""
	2104	foreach dataobj [get] {
	2105	foreach comp [$dataobj components] {
	2106	set tag $dataobj-$comp
[3416]	2107	#set contents [ConvertToVtkData $dataobj $comp]
	2108	set contents [$dataobj vtkdata $comp]
[2744]	2109	append bytes "$contents\n\n"
[2731]	2110	}
	2111	}
	2112	return [list .vtk $bytes]
	2113	}
	2114
	2115	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
	2116	if { [image width $_image(download)] > 0 &&
[2744]	2117	[image height $_image(download)] > 0 } {
	2118	set bytes [$_image(download) data -format "jpeg -quality 100"]
	2119	set bytes [Rappture::encoding::decode -as b64 $bytes]
	2120	return [list .jpg $bytes]
[2731]	2121	}
	2122	return ""
	2123	}
	2124
	2125	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
	2126	Rappture::Balloon $popup \
	2127	-title "[Rappture::filexfer::label downloadWord] as..."
	2128	set inner [$popup component inner]
	2129	label $inner.summary -text "" -anchor w
	2130	radiobutton $inner.vtk_button -text "VTK data file" \
	2131	-variable [itcl::scope _downloadPopup(format)] \
[3330]	2132	-font "Arial 9 " \
[2731]	2133	-value vtk
	2134	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
	2135	radiobutton $inner.image_button -text "Image File" \
	2136	-variable [itcl::scope _downloadPopup(format)] \
[3330]	2137	-font "Arial 9 " \
[2731]	2138	-value image
	2139	Rappture::Tooltip::for $inner.image_button \
	2140	"Save as digital image."
	2141
	2142	button $inner.ok -text "Save" \
[2744]	2143	-highlightthickness 0 -pady 2 -padx 3 \
[2731]	2144	-command $command \
[2744]	2145	-compound left \
	2146	-image [Rappture::icon download]
[2731]	2147
	2148	button $inner.cancel -text "Cancel" \
[2744]	2149	-highlightthickness 0 -pady 2 -padx 3 \
	2150	-command [list $popup deactivate] \
	2151	-compound left \
	2152	-image [Rappture::icon cancel]
[2731]	2153
	2154	blt::table $inner \
	2155	0,0 $inner.summary -cspan 2 \
	2156	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
	2157	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
	2158	4,1 $inner.cancel -width .9i -fill y \
	2159	4,0 $inner.ok -padx 2 -width .9i -fill y
	2160	blt::table configure $inner r3 -height 4
	2161	blt::table configure $inner r4 -pady 4
	2162	raise $inner.image_button
	2163	$inner.vtk_button invoke
	2164	return $inner
	2165	}
	2166
[3454]	2167	#
	2168	# SetObjectStyle --
	2169	#
	2170	# Set the style of the heightmap/contour object. This gets calls
	2171	# for each dataset once as it is loaded. It can overridden by
	2172	# the user controls.
	2173	#
	2174	#
[2731]	2175	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
	2176	# Parse style string.
	2177	set tag $dataobj-$comp
[3330]	2178	array set style {
	2179	-color BCGYR
[3454]	2180	-opacity 100
[3330]	2181	-levels 10
[2731]	2182	}
[3454]	2183	set stylelist [$dataobj style $comp]
	2184	if { $stylelist != "" } {
	2185	array set style $stylelist
	2186	}
	2187	# This is too complicated. We want to set the colormap, number of
[3469]	2188	# isolines and opacity for the dataset. They can be the default values,
	2189	# the style hints loaded with the dataset, or set by user controls. As
[3454]	2190	# datasets get loaded, they first use the defaults that are overidden
	2191	# by the style hints. If the user changes the global controls, then that
	2192	# overrides everything else. I don't know what it means when global
	2193	# controls are specified as style hints by each dataset. It complicates
	2194	# the code to handle aberrant cases.
	2195
	2196	if { $_changed(opacity) } {
	2197	set style(-opacity) $_settings(opacity)
	2198	}
	2199	if { $_changed(numIsolines) } {
	2200	set style(-levels) $_settings(numIsolines)
	2201	}
	2202	if { $_changed(colormap) } {
	2203	set style(-color) $_settings(colormap)
	2204	}
[3330]	2205	if { $_currentColormap == "" } {
[3454]	2206	$itk_component(colormap) value $style(-color)
[2731]	2207	}
[3454]	2208	set _currentOpacity $style(-opacity)
	2209	if { $_currentNumIsolines != $style(-levels) } {
	2210	set _currentNumIsolines $style(-levels)
[3462]	2211	set _settings(numIsolines) $_currentNumIsolines
[3469]	2212	$itk_component(numisolines) value $_currentNumIsolines
[3454]	2213	DrawLegend
	2214	}
[3447]	2215	SendCmd "dataset outline $_settings(outline) $tag"
	2216	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)] $tag"
[3330]	2217	set scale [GetHeightmapScale]
[3454]	2218	SendCmd "heightmap add numcontours $_currentNumIsolines $scale $tag"
[3330]	2219	set _comp2scale($tag) $_settings(heightmapScale)
	2220	SendCmd "heightmap edges $_settings(edges) $tag"
	2221	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
[3454]	2222	SetCurrentColormap $style(-color)
[3416]	2223	set color [$itk_component(isolinecolor) value]
	2224	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
[3421]	2225	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
[2731]	2226	}
	2227
	2228	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
	2229	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
[2744]	2230	return 0
[2731]	2231	}
	2232	return 1
	2233	}
	2234
	2235	# ----------------------------------------------------------------------
[3330]	2236	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
[2731]	2237	#
	2238	# Invoked automatically whenever the "legend" command comes in from
	2239	# the rendering server. Indicates that binary image data with the
	2240	# specified <size> will follow.
	2241	# ----------------------------------------------------------------------
[3330]	2242	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
	2243	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
	2244	if { [isconnected] } {
[2731]	2245	set bytes [ReceiveBytes $size]
	2246	if { ![info exists _image(legend)] } {
	2247	set _image(legend) [image create photo]
	2248	}
	2249	$_image(legend) configure -data $bytes
	2250	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
[3421]	2251	if { [catch {DrawLegend} errs] != 0 } {
[3330]	2252	global errorInfo
	2253	puts stderr "errs=$errs errorInfo=$errorInfo"
[2744]	2254	}
[2731]	2255	}
	2256	}
	2257
	2258	#
	2259	# DrawLegend --
	2260	#
[3416]	2261	# Draws the legend in the own canvas on the right side of the plot area.
[2731]	2262	#
[3421]	2263	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
	2264	set fname $_curFldName
[2731]	2265	set c $itk_component(view)
	2266	set w [winfo width $c]
	2267	set h [winfo height $c]
	2268	set font "Arial 8"
	2269	set lineht [font metrics $font -linespace]
	2270
[3445]	2271	if { [string match "component*" $fname] } {
[3330]	2272	set title ""
	2273	} else {
[3416]	2274	if { [info exists _fields($fname)] } {
	2275	foreach { title units } $_fields($fname) break
[3330]	2276	if { $units != "" } {
	2277	set title [format "%s (%s)" $title $units]
	2278	}
	2279	} else {
[3416]	2280	set title $fname
[3330]	2281	}
	2282	}
	2283	set x [expr $w - 2]
	2284	if { !$_settings(legendVisible) } {
	2285	$c delete legend
	2286	return
	2287	}
	2288	if { [$c find withtag "legend"] == "" } {
	2289	set y 2
	2290	# If there's a legend title, create a text item for the title.
[3421]	2291	$c create text $x $y \
	2292	-anchor ne \
	2293	-fill $itk_option(-plotforeground) -tags "title legend" \
	2294	-font $font
[3330]	2295	incr y $lineht
	2296	$c create text $x $y \
	2297	-anchor ne \
	2298	-fill $itk_option(-plotforeground) -tags "vmax legend" \
	2299	-font $font
	2300	incr y $lineht
	2301	$c create image $x $y \
	2302	-anchor ne \
	2303	-image $_image(legend) -tags "colormap legend"
[3439]	2304	$c create rectangle $x $y 1 1 \
	2305	-fill "" -outline "" -tags "sensor legend"
[3330]	2306	$c create text $x [expr {$h-2}] \
	2307	-anchor se \
	2308	-fill $itk_option(-plotforeground) -tags "vmin legend" \
	2309	-font $font
[3442]	2310	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
[3439]	2311	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
[3442]	2312	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
[3330]	2313	}
	2314	$c delete isoline
	2315	set x2 $x
	2316	set iw [image width $_image(legend)]
	2317	set ih [image height $_image(legend)]
	2318	set x1 [expr $x2 - ($iw*12)/10]
	2319	set color [$itk_component(isolinecolor) value]
[3421]	2320
[3330]	2321	# Draw the isolines on the legend.
[3428]	2322	if { $color != "none" && [info exists _limits($_curFldName)] &&
[3454]	2323	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
[3330]	2324	set pixels [blt::vector create \#auto]
	2325	set values [blt::vector create \#auto]
	2326	set range [image height $_image(legend)]
	2327	# Order of pixels is max to min (max is at top of legend).
[3454]	2328	$pixels seq $ih 0 $_currentNumIsolines
[3421]	2329
[3330]	2330	set offset [expr 2 + $lineht]
	2331	# If there's a legend title, increase the offset by the line height.
	2332	if { $title != "" } {
	2333	incr offset $lineht
	2334	}
	2335	$pixels expr {round($pixels + $offset)}
	2336	# Order of values is min to max.
[3428]	2337	foreach { vmin vmax } $_limits($_curFldName) break
[3454]	2338	$values seq $vmin $vmax $_currentNumIsolines
[3330]	2339	set tags "isoline legend"
[3439]	2340	array unset _isolines
[3330]	2341	foreach pos [$pixels range 0 end] value [$values range end 0] {
	2342	set y1 [expr int($pos)]
[3439]	2343	for { set off 0 } { $off < 3 } { incr off } {
	2344	set _isolines([expr $y1 + $off]) $value
	2345	set _isolines([expr $y1 - $off]) $value
	2346	}
[3330]	2347	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
	2348	}
	2349	blt::vector destroy $pixels $values
	2350	}
	2351
	2352	$c bind title <ButtonPress> [itcl::code $this Combo post]
	2353	$c bind title <Enter> [itcl::code $this Combo activate]
	2354	$c bind title <Leave> [itcl::code $this Combo deactivate]
	2355	# Reset the item coordinates according the current size of the plot.
[3428]	2356	if { [info exists _limits($_curFldName)] } {
	2357	foreach { vmin vmax } $_limits($_curFldName) break
[3330]	2358	$c itemconfigure vmin -text [format %g $vmin]
	2359	$c itemconfigure vmax -text [format %g $vmax]
	2360	}
	2361	set y 2
	2362	# If there's a legend title, move the title to the correct position
	2363	if { $title != "" } {
[3421]	2364	$c itemconfigure title -text $title
[3330]	2365	$c coords title $x $y
	2366	incr y $lineht
	2367	}
	2368	$c coords vmax $x $y
	2369	incr y $lineht
	2370	$c coords colormap $x $y
[3439]	2371	set ix [image width $_image(legend)]
	2372	set ih [image height $_image(legend)]
	2373	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
	2374	$c raise sensor
[3330]	2375	$c coords vmin $x [expr {$h - 2}]
	2376	}
	2377
	2378	#
[2731]	2379	# EnterLegend --
	2380	#
	2381	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
	2382	SetLegendTip $x $y
	2383	}
	2384
	2385	#
	2386	# MotionLegend --
	2387	#
	2388	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
	2389	Rappture::Tooltip::tooltip cancel
	2390	set c $itk_component(view)
[3439]	2391	set cw [winfo width $c]
	2392	set ch [winfo height $c]
	2393	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
	2394	SetLegendTip $x $y
	2395	}
[2731]	2396	}
	2397
	2398	#
	2399	# LeaveLegend --
	2400	#
	2401	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
	2402	Rappture::Tooltip::tooltip cancel
	2403	.rappturetooltip configure -icon ""
	2404	}
	2405
	2406	#
	2407	# SetLegendTip --
	2408	#
	2409	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
[3442]	2410	set fname $_curFldName
[2731]	2411	set c $itk_component(view)
	2412	set w [winfo width $c]
	2413	set h [winfo height $c]
	2414	set font "Arial 8"
	2415	set lineht [font metrics $font -linespace]
	2416
[3416]	2417	set ih [image height $_image(legend)]
[3442]	2418	# Subtract off the offset of the color ramp from the top of the canvas
[3416]	2419	set iy [expr $y - ($lineht + 2)]
[2731]	2420
[3445]	2421	if { [string match "component*" $fname] } {
[3442]	2422	set title ""
[2731]	2423	} else {
[3442]	2424	if { [info exists _fields($fname)] } {
	2425	foreach { title units } $_fields($fname) break
	2426	if { $units != "" } {
	2427	set title [format "%s (%s)" $title $units]
	2428	}
	2429	} else {
	2430	set title $fname
	2431	}
[2731]	2432	}
[3416]	2433	# If there's a legend title, increase the offset by the line height.
	2434	if { $title != "" } {
[3439]	2435	incr iy -$lineht
[3416]	2436	}
	2437
[2731]	2438	# Make a swatch of the selected color
[3416]	2439	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
[2744]	2440	return
[2731]	2441	}
[3416]	2442
[2731]	2443	if { ![info exists _image(swatch)] } {
[2744]	2444	set _image(swatch) [image create photo -width 24 -height 24]
[2731]	2445	}
	2446	set color [eval format "\#%02x%02x%02x" $pixel]
	2447	$_image(swatch) put black -to 0 0 23 23
	2448	$_image(swatch) put $color -to 1 1 22 22
	2449
	2450	# Compute the value of the point
[3442]	2451	if { [info exists _limits($fname)] } {
	2452	foreach { vmin vmax } $_limits($fname) break
[3416]	2453	set t [expr 1.0 - (double($iy) / double($ih-1))]
[3330]	2454	set value [expr $t * ($vmax - $vmin) + $vmin]
[2731]	2455	} else {
[2744]	2456	set value 0.0
[2731]	2457	}
	2458	set tipx [expr $x + 15]
	2459	set tipy [expr $y - 5]
[3439]	2460	.rappturetooltip configure -icon $_image(swatch)
[3442]	2461	if { [info exists _isolines($y)] } {
	2462	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
[3439]	2463	} else {
	2464	Rappture::Tooltip::text $c [format "$title %g" $value]
	2465	}
[2731]	2466	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
	2467	}
	2468
	2469	# ----------------------------------------------------------------------
	2470	# USAGE: _dropdown post
	2471	# USAGE: _dropdown unpost
	2472	# USAGE: _dropdown select
	2473	#
	2474	# Used internally to handle the dropdown list for this combobox. The
	2475	# post/unpost options are invoked when the list is posted or unposted
	2476	# to manage the relief of the controlling button. The select option
	2477	# is invoked whenever there is a selection from the list, to assign
	2478	# the value back to the gauge.
	2479	# ----------------------------------------------------------------------
	2480	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
	2481	set c $itk_component(view)
	2482	switch -- $option {
	2483	post {
[2744]	2484	foreach { x1 y1 x2 y2 } [$c bbox title] break
	2485	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
	2486	set x [expr $x1 + [winfo rootx $itk_component(view)]]
	2487	set y [expr $y2 + [winfo rooty $itk_component(view)]]
	2488	tk_popup $itk_component(fieldmenu) $x $y
[2731]	2489	}
	2490	activate {
[2744]	2491	$c itemconfigure title -fill red
[2731]	2492	}
	2493	deactivate {
[3330]	2494	$c itemconfigure title -fill $itk_option(-plotforeground)
[2731]	2495	}
[2744]	2496	invoke {
[3409]	2497	$itk_component(field) value $_curFldLabel
[3330]	2498	AdjustSetting field
[2744]	2499	}
[2731]	2500	default {
	2501	error "bad option \"$option\": should be post, unpost, select"
	2502	}
	2503	}
	2504	}
[3330]	2505
	2506	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
	2507	if { $_settings(isHeightmap) } {
	2508	set val $_settings(heightmapScale)
	2509	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
	2510	return $sval
	2511	}
	2512	set sval 0
	2513	}
	2514
	2515
[3454]	2516
	2517

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