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source: branches/1.3/gui/scripts/vtkimageviewer.tcl @ 4770

Last change on this file since 4770 was 4770, checked in by ldelgass, 9 years ago
merge r4769 from trunk
File size: 77.3 KB

Rev	Line
[4512]	1	# -- mode: tcl; indent-tabs-mode: nil --
	2	# ----------------------------------------------------------------------
	3	# COMPONENT: vtkimageviewer - Vtk image 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
	9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
	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 *VtkImageViewer.width 4i widgetDefault
	19	option add VtkImageViewercursor crosshair widgetDefault
	20	option add *VtkImageViewer.height 4i widgetDefault
	21	option add *VtkImageViewer.foreground black widgetDefault
	22	option add *VtkImageViewer.controlBackground gray widgetDefault
	23	option add *VtkImageViewer.controlDarkBackground #999999 widgetDefault
	24	option add *VtkImageViewer.plotBackground black widgetDefault
	25	option add *VtkImageViewer.plotForeground white widgetDefault
	26	option add *VtkImageViewer.font \
	27	--helvetica-medium-r-normal--12-* widgetDefault
	28
	29	# must use this name -- plugs into Rappture::resources::load
	30	proc VtkImageViewer_init_resources {} {
	31	Rappture::resources::register \
	32	vtkvis_server Rappture::VtkImageViewer::SetServerList
	33	}
	34
	35	itcl::class Rappture::VtkImageViewer {
	36	inherit Rappture::VisViewer
	37
	38	itk_option define -plotforeground plotForeground Foreground ""
	39	itk_option define -plotbackground plotBackground Background ""
	40	itk_option define -mode mode Mode "vtkimage"
	41
	42	constructor { hostlist args } {
	43	Rappture::VisViewer::constructor $hostlist
	44	} {
	45	# defined below
	46	}
	47	destructor {
	48	# defined below
	49	}
	50	public proc SetServerList { namelist } {
	51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
	52	}
	53	public method add {dataobj {settings ""}}
	54	public method camera {option args}
	55	public method delete {args}
	56	public method disconnect {}
	57	public method download {option args}
	58	public method get {args}
	59	public method isconnected {}
	60	public method parameters {title args} {
	61	# do nothing
	62	}
	63	public method scale {args}
	64
	65	# The following methods are only used by this class.
[4766]	66	private method AdjustSetting {what {value ""}}
[4512]	67	private method BuildAxisTab {}
	68	private method BuildCameraTab {}
	69	private method BuildColormap { name }
	70	private method BuildImageTab {}
	71	private method BuildDownloadPopup { widget command }
	72	private method Combo { option }
[4766]	73	private method Connect {}
	74	private method CurrentDatasets {args}
	75	private method Disconnect {}
	76	private method DoResize {}
	77	private method DoRotate {}
[4512]	78	private method DrawLegend {}
	79	private method EnterLegend { x y }
	80	private method EventuallyRequestLegend {}
	81	private method EventuallyResize { w h }
[4770]	82	private method EventuallyRotate { q }
[4512]	83	private method GetImage { args }
	84	private method GetVtkData { args }
[4766]	85	private method InitSettings { args }
[4512]	86	private method IsValidObject { dataobj }
	87	private method LeaveLegend {}
	88	private method MotionLegend { x y }
[4766]	89	private method Pan {option x y}
[4512]	90	private method PanCamera {}
[4766]	91	private method Pick {x y}
	92	private method QuaternionToView { q } {
	93	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
	94	}
	95	private method Rebuild {}
	96	private method ReceiveDataset { args }
	97	private method ReceiveImage { args }
	98	private method ReceiveLegend { colormap title min max size }
[4512]	99	private method RequestLegend {}
[4766]	100	private method Rotate {option x y}
[4512]	101	private method SetCurrentColormap { color }
	102	private method SetLegendTip { x y }
	103	private method SetObjectStyle { dataobj comp }
	104	private method SetOrientation { side }
[4766]	105	private method ViewToQuaternion {} {
	106	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
	107	}
	108	private method Zoom {option}
[4512]	109
	110	private variable _arcball ""
	111	private variable _dlist "" ; # list of data objects
	112	private variable _obj2datasets
	113	private variable _obj2ovride ; # maps dataobj => style override
	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.
	118
	119	# The name of the current colormap used. The colormap is global to all
	120	# images displayed.
	121	private variable _currentColormap ""
	122	private variable _currentNumIsolines -1
	123
	124	private variable _maxScale 100; # This is the # of times the x-axis
	125	# and y-axis ranges can differ before
	126	# automatically turning on
	127	# -stretchtofit
	128
	129	private variable _click ; # info used for rotate operations
	130	private variable _limits ; # Holds overall limits for all dataobjs
	131	# using the viewer.
	132	private variable _view ; # view params for 3D view
	133	private variable _settings
	134	private variable _changed
	135	private variable _initialStyle ""; # First found style in dataobjects.
	136	private variable _reset 1; # Indicates if camera needs to be reset
	137	# to starting position.
	138	private variable _beforeConnect 1; # Indicates if camera needs to be reset
	139	# to starting position.
	140
	141	private variable _first "" ; # This is the topmost dataset.
	142	private variable _start 0
	143	private variable _isolines
	144	private variable _contourList ""
	145
	146	common _downloadPopup; # download options from popup
	147	private common _hardcopy
	148	private variable _width 0
	149	private variable _height 0
	150	private variable _legendWidth 0
	151	private variable _legendHeight 0
	152	private variable _resizePending 0
	153	private variable _rotatePending 0
	154	private variable _legendPending 0
	155	private variable _fieldNames {}
	156	private variable _fields
	157	private variable _curFldName ""
	158	private variable _curFldLabel ""
	159	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
	160	}
	161
	162	itk::usual VtkImageViewer {
	163	keep -background -foreground -cursor -font
	164	keep -plotbackground -plotforeground -mode
	165	}
	166
	167	# ----------------------------------------------------------------------
	168	# CONSTRUCTOR
	169	# ----------------------------------------------------------------------
	170	itcl::body Rappture::VtkImageViewer::constructor {hostlist args} {
	171	set _serverType "vtkvis"
	172
	173	EnableWaitDialog 900
	174	# Rebuild event
	175	$_dispatcher register !rebuild
	176	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
	177
	178	# Resize event
	179	$_dispatcher register !resize
	180	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
	181
	182	# Rotate event
	183	$_dispatcher register !rotate
	184	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
	185
	186	# Legend event
	187	$_dispatcher register !legend
	188	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
	189
	190	#
	191	# Populate parser with commands handle incoming requests
	192	#
	193	$_parser alias image [itcl::code $this ReceiveImage]
	194	$_parser alias dataset [itcl::code $this ReceiveDataset]
	195	$_parser alias legend [itcl::code $this ReceiveLegend]
	196
	197	# Create image for legend colorbar.
	198	set _image(legend) [image create photo]
	199
	200	# Initialize the view to some default parameters.
	201	array set _view {
[4766]	202	-ortho 0
	203	-qw 0.36
	204	-qx 0.25
	205	-qy 0.50
	206	-qz 0.70
	207	-xpan 0
	208	-ypan 0
	209	-zoom 1.0
[4512]	210	}
	211	set _arcball [blt::arcball create 100 100]
[4766]	212	$_arcball quaternion [ViewToQuaternion]
[4512]	213
	214	array set _settings {
[4770]	215	-axisflymode "static"
	216	-axislabels 1
	217	-axisminorticks 1
	218	-axisvisible 1
	219	-backingcolor white
	220	-backingvisible 1
	221	-colormapdiscrete 0
	222	-field "Default"
	223	-legendvisible 0
	224	-level 127.5
	225	-numcolors 256
	226	-opacity 100
	227	-outline 0
	228	-saveopacity 100
	229	-stretchtofit 0
	230	-view3d 0
	231	-window 255.0
	232	-xgrid 0
	233	-ygrid 0
	234	-zgrid 0
[4512]	235	}
	236	array set _changed {
[4770]	237	-colormap 0
	238	-opacity 0
[4512]	239	}
	240	itk_component add view {
	241	canvas $itk_component(plotarea).view \
	242	-highlightthickness 0 -borderwidth 0
	243	} {
	244	usual
	245	ignore -highlightthickness -borderwidth -background
	246	}
	247
	248	itk_component add fieldmenu {
	249	menu $itk_component(plotarea).menu \
	250	-relief flat \
	251	-tearoff no
	252	} {
	253	usual
	254	ignore -background -foreground -relief -tearoff
	255	}
	256	set c $itk_component(view)
	257	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
	258	bind $c <4> [itcl::code $this Zoom in 0.25]
	259	bind $c <5> [itcl::code $this Zoom out 0.25]
	260	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
	261	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
	262	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
	263	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
	264	bind $c <Enter> "focus %W"
	265	bind $c <Control-F1> [itcl::code $this ToggleConsole]
	266
	267	# Fix the scrollregion in case we go off screen
	268	$c configure -scrollregion [$c bbox all]
	269
	270	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
	271	set _map(cwidth) -1
	272	set _map(cheight) -1
	273	set _map(zoom) 1.0
	274	set _map(original) ""
	275
	276	set f [$itk_component(main) component controls]
	277	itk_component add reset {
	278	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
	279	-highlightthickness 0 \
	280	-image [Rappture::icon reset-view] \
	281	-command [itcl::code $this Zoom reset]
	282	} {
	283	usual
	284	ignore -highlightthickness
	285	}
	286	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
	287	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
	288
	289	itk_component add zoomin {
	290	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
	291	-highlightthickness 0 \
	292	-image [Rappture::icon zoom-in] \
	293	-command [itcl::code $this Zoom in]
	294	} {
	295	usual
	296	ignore -highlightthickness
	297	}
	298	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
	299	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
	300
	301	itk_component add zoomout {
	302	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
	303	-highlightthickness 0 \
	304	-image [Rappture::icon zoom-out] \
	305	-command [itcl::code $this Zoom out]
	306	} {
	307	usual
	308	ignore -highlightthickness
	309	}
	310	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
	311	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
	312
	313	itk_component add mode {
	314	Rappture::PushButton $f.mode \
	315	-onimage [Rappture::icon surface] \
	316	-offimage [Rappture::icon surface] \
[4770]	317	-variable [itcl::scope _settings(-view3d)] \
	318	-command [itcl::code $this AdjustSetting -view3d] \
[4512]	319	}
	320	Rappture::Tooltip::for $itk_component(mode) \
	321	"Toggle the surface/contour on/off"
	322	pack $itk_component(mode) -padx 2 -pady { 2 0 }
	323
	324	itk_component add stretchtofit {
	325	Rappture::PushButton $f.stretchtofit \
	326	-onimage [Rappture::icon stretchtofit] \
	327	-offimage [Rappture::icon stretchtofit] \
[4770]	328	-variable [itcl::scope _settings(-stretchtofit)] \
	329	-command [itcl::code $this AdjustSetting -stretchtofit] \
[4512]	330	}
	331	Rappture::Tooltip::for $itk_component(stretchtofit) \
	332	"Stretch plot to fit window on/off"
	333	pack $itk_component(stretchtofit) -padx 2 -pady 2
	334
	335	if { [catch {
	336	BuildImageTab
	337	BuildAxisTab
	338	BuildCameraTab
	339	} errs] != 0 } {
	340	global errorInfo
	341	puts stderr "errs=$errs errorInfo=$errorInfo"
	342	}
	343
	344	# Hack around the Tk panewindow. The problem is that the requested
	345	# size of the 3d view isn't set until an image is retrieved from
	346	# the server. So the panewindow uses the tiny size.
	347	set w 10000
	348	pack forget $itk_component(view)
	349	blt::table $itk_component(plotarea) \
	350	0,0 $itk_component(view) -fill both -reqwidth $w
	351	blt::table configure $itk_component(plotarea) c1 -resize none
	352
	353	# Bindings for panning via mouse
	354	bind $itk_component(view) <ButtonPress-2> \
	355	[itcl::code $this Pan click %x %y]
	356	bind $itk_component(view) <B2-Motion> \
	357	[itcl::code $this Pan drag %x %y]
	358	bind $itk_component(view) <ButtonRelease-2> \
	359	[itcl::code $this Pan release %x %y]
	360
	361	#bind $itk_component(view) <ButtonRelease-3> \
	362	# [itcl::code $this Pick %x %y]
	363
	364	# Bindings for panning via keyboard
	365	bind $itk_component(view) <KeyPress-Left> \
	366	[itcl::code $this Pan set -10 0]
	367	bind $itk_component(view) <KeyPress-Right> \
	368	[itcl::code $this Pan set 10 0]
	369	bind $itk_component(view) <KeyPress-Up> \
	370	[itcl::code $this Pan set 0 -10]
	371	bind $itk_component(view) <KeyPress-Down> \
	372	[itcl::code $this Pan set 0 10]
	373	bind $itk_component(view) <Shift-KeyPress-Left> \
	374	[itcl::code $this Pan set -2 0]
	375	bind $itk_component(view) <Shift-KeyPress-Right> \
	376	[itcl::code $this Pan set 2 0]
	377	bind $itk_component(view) <Shift-KeyPress-Up> \
	378	[itcl::code $this Pan set 0 -2]
	379	bind $itk_component(view) <Shift-KeyPress-Down> \
	380	[itcl::code $this Pan set 0 2]
	381
	382	# Bindings for zoom via keyboard
	383	bind $itk_component(view) <KeyPress-Prior> \
	384	[itcl::code $this Zoom out]
	385	bind $itk_component(view) <KeyPress-Next> \
	386	[itcl::code $this Zoom in]
	387
	388	bind $itk_component(view) <Enter> "focus $itk_component(view)"
	389
	390	if {[string equal "x11" [tk windowingsystem]]} {
	391	# Bindings for zoom via mouse
	392	bind $itk_component(view) <4> [itcl::code $this Zoom out]
	393	bind $itk_component(view) <5> [itcl::code $this Zoom in]
	394	}
	395
	396	set _image(download) [image create photo]
	397	eval itk_initialize $args
	398	Connect
	399	set _beforeConnect 0
	400	}
	401
	402	# ----------------------------------------------------------------------
	403	# DESTRUCTOR
	404	# ----------------------------------------------------------------------
	405	itcl::body Rappture::VtkImageViewer::destructor {} {
	406	Disconnect
	407	image delete $_image(plot)
	408	image delete $_image(download)
	409	catch { blt::arcball destroy $_arcball }
	410	}
	411
	412	itcl::body Rappture::VtkImageViewer::DoResize {} {
	413	if { $_width < 2 } {
	414	set _width 500
	415	}
	416	if { $_height < 2 } {
	417	set _height 500
	418	}
	419	set _start [clock clicks -milliseconds]
	420	SendCmd "screen size [expr $_width - 20] $_height"
	421
	422	set font "Arial 8"
	423	set lh [font metrics $font -linespace]
	424	set h [expr {$_height - 2 * ($lh + 2)}]
	425	if { $h != $_legendHeight } {
	426	EventuallyRequestLegend
	427	} else {
	428	DrawLegend
	429	}
	430	set _resizePending 0
	431	}
	432
	433	itcl::body Rappture::VtkImageViewer::DoRotate {} {
[4766]	434	SendCmd "camera orient [ViewToQuaternion]"
[4512]	435	set _rotatePending 0
	436	}
	437
	438	itcl::body Rappture::VtkImageViewer::EventuallyRequestLegend {} {
	439	if { !$_legendPending } {
	440	set _legendPending 1
	441	$_dispatcher event -idle !legend
	442	}
	443	}
	444
	445	itcl::body Rappture::VtkImageViewer::EventuallyResize { w h } {
	446	set _width $w
	447	set _height $h
	448	$_arcball resize $w $h
	449	if { !$_resizePending } {
	450	set _resizePending 1
	451	$_dispatcher event -after 250 !resize
	452	}
	453	}
	454
	455	set rotate_delay 100
	456
	457	itcl::body Rappture::VtkImageViewer::EventuallyRotate { q } {
[4766]	458	QuaternionToView $q
[4512]	459	if { !$_rotatePending } {
	460	set _rotatePending 1
	461	global rotate_delay
	462	$_dispatcher event -after $rotate_delay !rotate
	463	}
	464	}
	465
	466	# ----------------------------------------------------------------------
	467	# USAGE: add <dataobj> ?<settings>?
	468	#
	469	# Clients use this to add a data object to the plot. The optional
	470	# <settings> are used to configure the plot. Allowed settings are
	471	# -color, -brightness, -width, -linestyle, and -raise.
	472	# ----------------------------------------------------------------------
	473	itcl::body Rappture::VtkImageViewer::add {dataobj {settings ""}} {
	474	if { ![$dataobj isvalid] } {
	475	return; # Object doesn't contain valid data.
	476	}
	477	array set params {
	478	-color auto
	479	-width 1
	480	-linestyle solid
	481	-brightness 0
	482	-raise 0
	483	-description ""
	484	-param ""
	485	-type ""
	486	}
	487	array set params $settings
	488	set params(-description) ""
	489	set params(-param) ""
	490	array set params $settings
	491
	492	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
	493	# can't handle -autocolors yet
	494	set params(-color) white
	495	}
	496	set pos [lsearch -exact $_dlist $dataobj]
	497	if {$pos < 0} {
	498	lappend _dlist $dataobj
	499	}
	500	set _obj2ovride($dataobj-color) $params(-color)
	501	set _obj2ovride($dataobj-width) $params(-width)
	502	set _obj2ovride($dataobj-raise) $params(-raise)
	503	$_dispatcher event -idle !rebuild
	504	}
	505
	506
	507	# ----------------------------------------------------------------------
	508	# USAGE: delete ?<dataobj1> <dataobj2> ...?
	509	#
	510	# Clients use this to delete a dataobj from the plot. If no dataobjs
	511	# are specified, then all dataobjs are deleted. No data objects are
	512	# deleted. They are only removed from the display list.
	513	#
	514	# ----------------------------------------------------------------------
	515	itcl::body Rappture::VtkImageViewer::delete {args} {
	516	if { [llength $args] == 0} {
	517	set args $_dlist
	518	}
	519	# Delete all specified dataobjs
	520	set changed 0
	521	foreach dataobj $args {
	522	set pos [lsearch -exact $_dlist $dataobj]
	523	if { $pos < 0 } {
	524	continue; # Don't know anything about it.
	525	}
	526	# Remove it from the dataobj list.
	527	set _dlist [lreplace $_dlist $pos $pos]
	528	array unset _obj2ovride $dataobj-*
	529	array unset _settings $dataobj-*
	530	set changed 1
	531	}
	532	# If anything changed, then rebuild the plot
	533	if { $changed } {
	534	$_dispatcher event -idle !rebuild
	535	}
	536	}
	537
	538	# ----------------------------------------------------------------------
	539	# USAGE: get ?-objects?
	540	# USAGE: get ?-visible?
	541	# USAGE: get ?-image view?
	542	#
	543	# Clients use this to query the list of objects being plotted, in
	544	# order from bottom to top of this result. The optional "-image"
	545	# flag can also request the internal images being shown.
	546	# ----------------------------------------------------------------------
	547	itcl::body Rappture::VtkImageViewer::get {args} {
	548	if {[llength $args] == 0} {
	549	set args "-objects"
	550	}
	551	set op [lindex $args 0]
	552	switch -- $op {
	553	"-objects" {
	554	# put the dataobj list in order according to -raise options
	555	set dlist {}
	556	foreach dataobj $_dlist {
	557	if { ![IsValidObject $dataobj] } {
	558	continue
	559	}
	560	if {[info exists _obj2ovride($dataobj-raise)] &&
	561	$_obj2ovride($dataobj-raise)} {
	562	set dlist [linsert $dlist 0 $dataobj]
	563	} else {
	564	lappend dlist $dataobj
	565	}
	566	}
	567	return $dlist
	568	}
	569	"-visible" {
	570	set dlist {}
	571	foreach dataobj $_dlist {
	572	if { ![IsValidObject $dataobj] } {
	573	continue
	574	}
	575	if { ![info exists _obj2ovride($dataobj-raise)] } {
	576	# No setting indicates that the object isn't visible.
	577	continue
	578	}
	579	# Otherwise use the -raise parameter to put the object to
	580	# the front of the list.
	581	if { $_obj2ovride($dataobj-raise) } {
	582	set dlist [linsert $dlist 0 $dataobj]
	583	} else {
	584	lappend dlist $dataobj
	585	}
	586	}
	587	return $dlist
	588	}
	589	-image {
	590	if {[llength $args] != 2} {
	591	error "wrong # args: should be \"get -image view\""
	592	}
	593	switch -- [lindex $args end] {
	594	view {
	595	return $_image(plot)
	596	}
	597	default {
	598	error "bad image name \"[lindex $args end]\": should be view"
	599	}
	600	}
	601	}
	602	default {
	603	error "bad option \"$op\": should be -objects or -image"
	604	}
	605	}
	606	}
	607
	608	#
	609	# scale --
	610	#
	611	# This gets called either incrementally as new simulations are
	612	# added or all at once as a sequence of images.
	613	# This accounts for all objects--even those not showing on the
	614	# screen. Because of this, the limits are appropriate for all
	615	# objects as the user scans through data in the ResultSet viewer.
	616	#
	617	itcl::body Rappture::VtkImageViewer::scale {args} {
	618	foreach dataobj $args {
	619	if { ![$dataobj isvalid] } {
	620	continue; # Object doesn't contain valid data.
	621	}
	622	foreach axis { x y } {
	623	set lim [$dataobj limits $axis]
	624	if { ![info exists _limits($axis)] } {
	625	set _limits($axis) $lim
	626	continue
	627	}
	628	foreach {min max} $lim break
	629	foreach {amin amax} $_limits($axis) break
	630	if { $amin > $min } {
	631	set amin $min
	632	}
	633	if { $amax < $max } {
	634	set amax $max
	635	}
	636	set _limits($axis) [list $amin $amax]
	637	set units [$dataobj hints ${axis}units]
	638	set found($units) 1
	639	}
	640	foreach { fname lim } [$dataobj fieldlimits] {
	641	if { ![info exists _limits($fname)] } {
	642	set _limits($fname) $lim
	643	continue
	644	}
	645	foreach {min max} $lim break
	646	foreach {fmin fmax} $_limits($fname) break
	647	if { $fmin > $min } {
	648	set fmin $min
	649	}
	650	if { $fmax < $max } {
	651	set fmax $max
	652	}
	653	set _limits($fname) [list $fmin $fmax]
	654	}
	655	}
	656	if { [array size found] > 1 } {
[4770]	657	set _settings(-stretchtofit) 1
[4512]	658	} else {
	659	# Check if the range of the x and y axes requires that we stretch
	660	# the contour to fit the plotting area. This can happen when the
	661	# x and y scales differ greatly (> 100x)
	662	foreach {xmin xmax} $_limits(x) break
	663	foreach {ymin ymax} $_limits(y) break
	664	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
	665	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
[4770]	666	set _settings(-stretchtofit) 1
[4512]	667	}
	668	}
	669	}
	670
	671	# ----------------------------------------------------------------------
	672	# USAGE: download coming
	673	# USAGE: download controls <downloadCommand>
	674	# USAGE: download now
	675	#
	676	# Clients use this method to create a downloadable representation
	677	# of the plot. Returns a list of the form {ext string}, where
	678	# "ext" is the file extension (indicating the type of data) and
	679	# "string" is the data itself.
	680	# ----------------------------------------------------------------------
	681	itcl::body Rappture::VtkImageViewer::download {option args} {
	682	switch $option {
	683	coming {
	684	if {[catch {
	685	blt::winop snap $itk_component(plotarea) $_image(download)
	686	}]} {
	687	$_image(download) configure -width 1 -height 1
	688	$_image(download) put #000000
	689	}
	690	}
	691	controls {
	692	set popup .vtkviewerdownload
	693	if { ![winfo exists .vtkviewerdownload] } {
	694	set inner [BuildDownloadPopup $popup [lindex $args 0]]
	695	} else {
	696	set inner [$popup component inner]
	697	}
	698	set _downloadPopup(image_controls) $inner.image_frame
	699	set num [llength [get]]
	700	set num [expr {($num == 1) ? "1 result" : "$num results"}]
	701	set word [Rappture::filexfer::label downloadWord]
	702	$inner.summary configure -text "$word $num in the following format:"
	703	update idletasks ;# Fix initial sizes
	704	return $popup
	705	}
	706	now {
	707	set popup .vtkviewerdownload
	708	if {[winfo exists .vtkviewerdownload]} {
	709	$popup deactivate
	710	}
	711	switch -- $_downloadPopup(format) {
	712	"image" {
	713	return [$this GetImage [lindex $args 0]]
	714	}
	715	"vtk" {
	716	return [$this GetVtkData [lindex $args 0]]
	717	}
	718	}
	719	return ""
	720	}
	721	default {
	722	error "bad option \"$option\": should be coming, controls, now"
	723	}
	724	}
	725	}
	726
	727	# ----------------------------------------------------------------------
	728	# USAGE: Connect ?<host:port>,<host:port>...?
	729	#
	730	# Clients use this method to establish a connection to a new
	731	# server, or to reestablish a connection to the previous server.
	732	# Any existing connection is automatically closed.
	733	# ----------------------------------------------------------------------
	734	itcl::body Rappture::VtkImageViewer::Connect {} {
	735	global readyForNextFrame
	736	set readyForNextFrame 1
	737	set _reset 1
	738	set _hosts [GetServerList "vtkvis"]
	739	if { "" == $_hosts } {
	740	return 0
	741	}
	742	set result [VisViewer::Connect $_hosts]
	743	if { $result } {
	744	if { $_reportClientInfo } {
	745	# Tell the server the viewer, hub, user and session.
	746	# Do this immediately on connect before buffering any commands
	747	global env
	748
	749	set info {}
	750	set user "???"
	751	if { [info exists env(USER)] } {
	752	set user $env(USER)
	753	}
	754	set session "???"
	755	if { [info exists env(SESSION)] } {
	756	set session $env(SESSION)
	757	}
[4670]	758	lappend info "version" "$Rappture::version"
	759	lappend info "build" "$Rappture::build"
	760	lappend info "svnurl" "$Rappture::svnurl"
	761	lappend info "installdir" "$Rappture::installdir"
[4512]	762	lappend info "hub" [exec hostname]
	763	lappend info "client" "vtkimageviewer"
	764	lappend info "user" $user
	765	lappend info "session" $session
	766	SendCmd "clientinfo [list $info]"
	767	}
	768	set w [winfo width $itk_component(view)]
	769	set h [winfo height $itk_component(view)]
	770	EventuallyResize $w $h
	771	}
	772	return $result
	773	}
	774
	775	#
	776	# isconnected --
	777	#
	778	# Indicates if we are currently connected to the visualization server.
	779	#
	780	itcl::body Rappture::VtkImageViewer::isconnected {} {
	781	return [VisViewer::IsConnected]
	782	}
	783
	784	#
	785	# disconnect --
	786	#
	787	itcl::body Rappture::VtkImageViewer::disconnect {} {
	788	Disconnect
	789	set _reset 1
	790	}
	791
	792	#
	793	# Disconnect --
	794	#
	795	# Clients use this method to disconnect from the current rendering
	796	# server.
	797	#
	798	itcl::body Rappture::VtkImageViewer::Disconnect {} {
	799	VisViewer::Disconnect
	800
	801	$_dispatcher cancel !rebuild
	802	$_dispatcher cancel !resize
	803	$_dispatcher cancel !rotate
	804	$_dispatcher cancel !legend
	805	# disconnected -- no more data sitting on server
	806	array unset _datasets
	807	array unset _data
	808	array unset _colormaps
	809	array unset _obj2datasets
	810	global readyForNextFrame
	811	set readyForNextFrame 1
	812	}
	813
	814	# ----------------------------------------------------------------------
	815	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
	816	#
	817	# Invoked automatically whenever the "image" command comes in from
	818	# the rendering server. Indicates that binary image data with the
	819	# specified <size> will follow.
	820	# ----------------------------------------------------------------------
	821	itcl::body Rappture::VtkImageViewer::ReceiveImage { args } {
	822	global readyForNextFrame
	823	set readyForNextFrame 1
	824	array set info {
	825	-token "???"
	826	-bytes 0
	827	-type image
	828	}
	829	array set info $args
	830	set bytes [ReceiveBytes $info(-bytes)]
	831	if { $info(-type) == "image" } {
	832	if 0 {
[4768]	833	set f [open "last.ppm" "w"]
	834	fconfigure $f -encoding binary
	835	puts -nonewline $f $bytes
[4512]	836	close $f
	837	}
	838	$_image(plot) configure -data $bytes
	839	set time [clock seconds]
	840	set date [clock format $time]
	841	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
	842	if { $_start > 0 } {
	843	set finish [clock clicks -milliseconds]
	844	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
	845	set _start 0
	846	}
	847	} elseif { $info(type) == "print" } {
	848	set tag $this-print-$info(-token)
	849	set _hardcopy($tag) $bytes
	850	}
	851	}
	852
	853	#
	854	# ReceiveDataset --
	855	#
	856	itcl::body Rappture::VtkImageViewer::ReceiveDataset { args } {
	857	if { ![isconnected] } {
	858	return
	859	}
	860	set option [lindex $args 0]
	861	switch -- $option {
	862	"scalar" {
	863	set option [lindex $args 1]
	864	switch -- $option {
	865	"world" {
	866	foreach { x y z value tag } [lrange $args 2 end] break
	867	}
	868	"pixel" {
	869	foreach { x y value tag } [lrange $args 2 end] break
	870	}
	871	}
	872	}
	873	"vector" {
	874	set option [lindex $args 1]
	875	switch -- $option {
	876	"world" {
	877	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
	878	}
	879	"pixel" {
	880	foreach { x y vx vy vz tag } [lrange $args 2 end] break
	881	}
	882	}
	883	}
	884	"names" {
	885	foreach { name } [lindex $args 1] {
	886	#puts stderr "Dataset: $name"
	887	}
	888	}
	889	default {
	890	error "unknown dataset option \"$option\" from server"
	891	}
	892	}
	893	}
	894
	895	# ----------------------------------------------------------------------
	896	# USAGE: Rebuild
	897	#
	898	# Called automatically whenever something changes that affects the
	899	# data in the widget. Clears any existing data and rebuilds the
	900	# widget to display new data.
	901	# ----------------------------------------------------------------------
	902	itcl::body Rappture::VtkImageViewer::Rebuild {} {
	903	set w [winfo width $itk_component(view)]
	904	set h [winfo height $itk_component(view)]
	905	if { $w < 2 \|\| $h < 2 } {
	906	$_dispatcher event -idle !rebuild
	907	return
	908	}
	909
	910	# Turn on buffering of commands to the server. We don't want to
	911	# be preempted by a server disconnect/reconnect (which automatically
	912	# generates a new call to Rebuild).
	913	StartBufferingCommands
	914
	915	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
	916	set _width $w
	917	set _height $h
	918	$_arcball resize $w $h
	919	DoResize
[4770]	920	if { $_settings(-stretchtofit) } {
	921	AdjustSetting -stretchToFit
[4512]	922	}
	923	}
	924	if { $_reset } {
	925	#
	926	# Reset the camera and other view parameters
	927	#
[4770]	928	InitSettings -view3d -background
[4512]	929
	930	SendCmd "axis lrot z 90"
[4766]	931	$_arcball quaternion [ViewToQuaternion]
[4770]	932	if {$_settings(-view3d) } {
[4766]	933	if { $_view(-ortho)} {
[4512]	934	SendCmd "camera mode ortho"
	935	} else {
	936	SendCmd "camera mode persp"
	937	}
	938	DoRotate
	939	SendCmd "camera reset"
	940	}
	941	PanCamera
	942	StopBufferingCommands
	943	SendCmd "imgflush"
	944	StartBufferingCommands
	945	}
	946
	947	set _first ""
	948	# Start off with no datasets are visible.
	949	SendCmd "dataset visible 0"
	950	foreach dataobj [get -objects] {
	951	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
	952	set _first $dataobj
	953	}
	954	set _obj2datasets($dataobj) ""
	955	foreach comp [$dataobj components] {
	956	set tag $dataobj-$comp
	957	if { ![info exists _datasets($tag)] } {
	958	set bytes [$dataobj vtkdata $comp]
	959	if 0 {
	960	set f [open /tmp/vtkimage.vtk "w"]
[4768]	961	fconfigure $f -translation binary -encoding binary
	962	puts -nonewline $f $bytes
[4512]	963	close $f
	964	}
	965	set length [string length $bytes]
	966	if { $_reportClientInfo } {
	967	set info {}
[4750]	968	lappend info "tool_id" [$dataobj hints toolid]
	969	lappend info "tool_name" [$dataobj hints toolname]
	970	lappend info "tool_title" [$dataobj hints tooltitle]
	971	lappend info "tool_command" [$dataobj hints toolcommand]
	972	lappend info "tool_revision" [$dataobj hints toolrevision]
[4512]	973	lappend info "dataset_label" [$dataobj hints label]
	974	lappend info "dataset_size" $length
	975	lappend info "dataset_tag" $tag
[4766]	976	SendCmd "clientinfo [list $info]"
[4512]	977	}
	978	SendCmd "dataset add $tag data follows $length"
	979	append _outbuf $bytes
	980	set _datasets($tag) 1
	981	SetObjectStyle $dataobj $comp
	982	}
	983	lappend _obj2datasets($dataobj) $tag
	984	if { [info exists _obj2ovride($dataobj-raise)] } {
	985	# Setting dataset visible enables outline
	986	# and image
	987	SendCmd "dataset visible 1 $tag"
	988	}
	989	}
	990	}
	991	if { $_first != "" } {
	992	$itk_component(field) choices delete 0 end
	993	$itk_component(fieldmenu) delete 0 end
	994	array unset _fields
	995	set _curFldName ""
	996	foreach cname [$_first components] {
	997	foreach fname [$_first fieldnames $cname] {
	998	if { [info exists _fields($fname)] } {
	999	continue
	1000	}
	1001	foreach { label units components } \
	1002	[$_first fieldinfo $fname] break
	1003	$itk_component(field) choices insert end "$fname" "$label"
	1004	$itk_component(fieldmenu) add radiobutton -label "$label" \
	1005	-value $label -variable [itcl::scope _curFldLabel] \
	1006	-selectcolor red \
	1007	-activebackground $itk_option(-plotbackground) \
	1008	-activeforeground $itk_option(-plotforeground) \
	1009	-font "Arial 8" \
	1010	-command [itcl::code $this Combo invoke]
	1011	set _fields($fname) [list $label $units $components]
	1012	if { $_curFldName == "" } {
	1013	set _curFldName $fname
	1014	set _curFldLabel $label
	1015	}
	1016	}
	1017	}
	1018	$itk_component(field) value $_curFldLabel
	1019	}
[4770]	1020	InitSettings -stretchtofit -outline
[4512]	1021
	1022	if { $_reset } {
	1023	SendCmd "axis tickpos outside"
[4694]	1024	#SendCmd "axis lformat all %g"
[4512]	1025
	1026	foreach axis { x y z } {
	1027	set label [$_first hints ${axis}label]
	1028	if { $label == "" } {
	1029	set label [string toupper $axis]
	1030	}
	1031	# May be a space in the axis label.
	1032	SendCmd [list axis name $axis $label]
	1033
	1034	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
[4759]	1035	if {$_curFldName != ""} {
	1036	set units [lindex $_fields($_curFldName) 1]
	1037	}
[4512]	1038	} else {
	1039	set units [$_first hints ${axis}units]
	1040	}
	1041	if { $units != "" } {
	1042	# May be a space in the axis units.
	1043	SendCmd [list axis units $axis $units]
	1044	}
	1045	}
	1046	#
	1047	# Reset the camera and other view parameters
	1048	#
[4766]	1049	$_arcball quaternion [ViewToQuaternion]
[4770]	1050	if {$_settings(-view3d) } {
[4766]	1051	if { $_view(-ortho)} {
[4512]	1052	SendCmd "camera mode ortho"
	1053	} else {
	1054	SendCmd "camera mode persp"
	1055	}
	1056	DoRotate
	1057	SendCmd "camera reset"
	1058	}
	1059	PanCamera
[4770]	1060	InitSettings -xgrid -ygrid -zgrid \
	1061	-axisvisible -axislabels -field -view3d
[4512]	1062	if { [array size _fields] < 2 } {
[4676]	1063	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
[4512]	1064	}
	1065	RequestLegend
	1066	set _reset 0
	1067	}
	1068	global readyForNextFrame
	1069	set readyForNextFrame 0; # Don't advance to the next frame
	1070
	1071	# Actually write the commands to the server socket. If it fails, we don't
	1072	# care. We're finished here.
	1073	blt::busy hold $itk_component(hull)
	1074	StopBufferingCommands
	1075	blt::busy release $itk_component(hull)
	1076	}
	1077
	1078	# ----------------------------------------------------------------------
	1079	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
	1080	#
	1081	# Returns a list of server IDs for the current datasets being displayed. This
	1082	# is normally a single ID, but it might be a list of IDs if the current data
	1083	# object has multiple components.
	1084	# ----------------------------------------------------------------------
	1085	itcl::body Rappture::VtkImageViewer::CurrentDatasets {args} {
	1086	set flag [lindex $args 0]
	1087	switch -- $flag {
	1088	"-all" {
	1089	if { [llength $args] > 1 } {
	1090	error "CurrentDatasets: can't specify dataobj after \"-all\""
	1091	}
	1092	set dlist [get -objects]
	1093	}
	1094	"-visible" {
	1095	if { [llength $args] > 1 } {
	1096	set dlist {}
	1097	set args [lrange $args 1 end]
	1098	foreach dataobj $args {
	1099	if { [info exists _obj2ovride($dataobj-raise)] } {
	1100	lappend dlist $dataobj
	1101	}
	1102	}
	1103	} else {
	1104	set dlist [get -visible]
	1105	}
	1106	}
	1107	default {
	1108	set dlist $args
	1109	}
	1110	}
	1111	set rlist ""
	1112	foreach dataobj $dlist {
	1113	foreach comp [$dataobj components] {
	1114	set tag $dataobj-$comp
	1115	if { [info exists _datasets($tag)] && $_datasets($tag) } {
	1116	lappend rlist $tag
	1117	}
	1118	}
	1119	}
	1120	return $rlist
	1121	}
	1122
	1123	# ----------------------------------------------------------------------
	1124	# USAGE: Zoom in
	1125	# USAGE: Zoom out
	1126	# USAGE: Zoom reset
	1127	#
	1128	# Called automatically when the user clicks on one of the zoom
	1129	# controls for this widget. Changes the zoom for the current view.
	1130	# ----------------------------------------------------------------------
	1131	itcl::body Rappture::VtkImageViewer::Zoom {option} {
	1132	switch -- $option {
	1133	"in" {
[4766]	1134	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
	1135	SendCmd "camera zoom $_view(-zoom)"
[4512]	1136	}
	1137	"out" {
[4766]	1138	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
	1139	SendCmd "camera zoom $_view(-zoom)"
[4512]	1140	}
	1141	"reset" {
	1142	array set _view {
[4766]	1143	-qw 0.36
	1144	-qx 0.25
	1145	-qy 0.50
	1146	-qz 0.70
	1147	-xpan 0
	1148	-ypan 0
	1149	-zoom 1.0
[4512]	1150	}
	1151	if { $_first != "" } {
	1152	set location [$_first hints camera]
	1153	if { $location != "" } {
	1154	array set _view $location
	1155	}
	1156	}
[4766]	1157	$_arcball quaternion [ViewToQuaternion]
[4770]	1158	if {$_settings(-view3d) } {
[4512]	1159	DoRotate
	1160	}
	1161	SendCmd "camera reset"
	1162	}
	1163	}
	1164	}
	1165
	1166	itcl::body Rappture::VtkImageViewer::PanCamera {} {
[4766]	1167	set x $_view(-xpan)
	1168	set y $_view(-ypan)
[4512]	1169	SendCmd "camera pan $x $y"
	1170	}
	1171
	1172
	1173	# ----------------------------------------------------------------------
	1174	# USAGE: Rotate click <x> <y>
	1175	# USAGE: Rotate drag <x> <y>
	1176	# USAGE: Rotate release <x> <y>
	1177	#
	1178	# Called automatically when the user clicks/drags/releases in the
	1179	# plot area. Moves the plot according to the user's actions.
	1180	# ----------------------------------------------------------------------
	1181	itcl::body Rappture::VtkImageViewer::Rotate {option x y} {
	1182	switch -- $option {
	1183	"click" {
	1184	$itk_component(view) configure -cursor fleur
	1185	set _click(x) $x
	1186	set _click(y) $y
	1187	}
	1188	"drag" {
	1189	if {[array size _click] == 0} {
	1190	Rotate click $x $y
	1191	} else {
	1192	set w [winfo width $itk_component(view)]
	1193	set h [winfo height $itk_component(view)]
	1194	if {$w <= 0 \|\| $h <= 0} {
	1195	return
	1196	}
	1197
	1198	if {[catch {
	1199	# this fails sometimes for no apparent reason
	1200	set dx [expr {double($x-$_click(x))/$w}]
	1201	set dy [expr {double($y-$_click(y))/$h}]
	1202	}]} {
	1203	return
	1204	}
	1205	if { $dx == 0 && $dy == 0 } {
	1206	return
	1207	}
	1208	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
	1209	EventuallyRotate $q
	1210	set _click(x) $x
	1211	set _click(y) $y
	1212	}
	1213	}
	1214	"release" {
	1215	Rotate drag $x $y
	1216	$itk_component(view) configure -cursor ""
	1217	catch {unset _click}
	1218	}
	1219	default {
	1220	error "bad option \"$option\": should be click, drag, release"
	1221	}
	1222	}
	1223	}
	1224
	1225	itcl::body Rappture::VtkImageViewer::Pick {x y} {
	1226	foreach tag [CurrentDatasets -visible] {
	1227	SendCmd "dataset getscalar pixel $x $y $tag"
	1228	}
	1229	}
	1230
	1231	# ----------------------------------------------------------------------
	1232	# USAGE: $this Pan click x y
	1233	# $this Pan drag x y
	1234	# $this Pan release x y
	1235	#
	1236	# Called automatically when the user clicks on one of the zoom
	1237	# controls for this widget. Changes the zoom for the current view.
	1238	# ----------------------------------------------------------------------
	1239	itcl::body Rappture::VtkImageViewer::Pan {option x y} {
	1240	switch -- $option {
	1241	"set" {
	1242	set w [winfo width $itk_component(view)]
	1243	set h [winfo height $itk_component(view)]
	1244	set x [expr $x / double($w)]
	1245	set y [expr $y / double($h)]
[4766]	1246	set _view(-xpan) [expr $_view(-xpan) + $x]
	1247	set _view(-ypan) [expr $_view(-ypan) + $y]
[4512]	1248	PanCamera
	1249	return
	1250	}
	1251	"click" {
	1252	set _click(x) $x
	1253	set _click(y) $y
	1254	$itk_component(view) configure -cursor hand1
	1255	}
	1256	"drag" {
	1257	if { ![info exists _click(x)] } {
	1258	set _click(x) $x
	1259	}
	1260	if { ![info exists _click(y)] } {
	1261	set _click(y) $y
	1262	}
	1263	set w [winfo width $itk_component(view)]
	1264	set h [winfo height $itk_component(view)]
	1265	set dx [expr ($_click(x) - $x)/double($w)]
	1266	set dy [expr ($_click(y) - $y)/double($h)]
	1267	set _click(x) $x
	1268	set _click(y) $y
[4766]	1269	set _view(-xpan) [expr $_view(-xpan) - $dx]
	1270	set _view(-ypan) [expr $_view(-ypan) - $dy]
[4512]	1271	PanCamera
	1272	}
	1273	"release" {
	1274	Pan drag $x $y
	1275	$itk_component(view) configure -cursor ""
	1276	}
	1277	default {
	1278	error "unknown option \"$option\": should set, click, drag, or release"
	1279	}
	1280	}
	1281	}
	1282
	1283	# ----------------------------------------------------------------------
	1284	# USAGE: InitSettings <what> ?<value>?
	1285	#
	1286	# Used internally to update rendering settings whenever parameters
	1287	# change in the popup settings panel. Sends the new settings off
	1288	# to the back end.
	1289	# ----------------------------------------------------------------------
	1290	itcl::body Rappture::VtkImageViewer::InitSettings { args } {
	1291	foreach spec $args {
[4770]	1292	if { [info exists _settings($_first${spec})] } {
[4512]	1293	# Reset global setting with dataobj specific setting
[4770]	1294	set _settings($spec) $_settings($_first${spec})
[4512]	1295	}
	1296	AdjustSetting $spec
	1297	}
	1298	}
	1299
	1300	#
	1301	# AdjustSetting --
	1302	#
	1303	# Changes/updates a specific setting in the widget. There are
	1304	# usually user-setable option. Commands are sent to the render
	1305	# server.
	1306	#
	1307	itcl::body Rappture::VtkImageViewer::AdjustSetting {what {value ""}} {
	1308	if { $_beforeConnect } {
	1309	return
	1310	}
	1311	switch -- $what {
[4770]	1312	"-axisflymode" {
[4512]	1313	set mode [$itk_component(axisflymode) value]
	1314	set mode [$itk_component(axisflymode) translate $mode]
	1315	set _settings($what) $mode
	1316	SendCmd "axis flymode $mode"
	1317	}
[4770]	1318	"-axislabels" {
[4512]	1319	set bool $_settings($what)
	1320	SendCmd "axis labels all $bool"
	1321	}
[4770]	1322	"-axisminorticks" {
[4512]	1323	set bool $_settings($what)
[4694]	1324	SendCmd "axis minticks all $bool"
[4512]	1325	}
[4770]	1326	"-axisvisible" {
[4512]	1327	set bool $_settings($what)
	1328	SendCmd "axis visible all $bool"
	1329	}
[4770]	1330	"-background" {
[4512]	1331	set bg [$itk_component(background) value]
	1332	array set fgcolors {
	1333	"black" "white"
	1334	"white" "black"
	1335	"grey" "black"
	1336	}
	1337	set fg $fgcolors($bg)
	1338	configure -plotbackground $bg -plotforeground $fg
	1339	$itk_component(view) delete "legend"
	1340	SendCmd "screen bgcolor [Color2RGB $bg]"
	1341	SendCmd "outline color [Color2RGB $fg]"
	1342	SendCmd "axis color all [Color2RGB $fg]"
	1343	DrawLegend
	1344	}
[4770]	1345	"-backingcolor" {
[4512]	1346	set color [$itk_component(backingcolor) value]
	1347	if { $color == "none" } {
[4770]	1348	if { $_settings(-backingvisible) } {
[4512]	1349	SendCmd "image backing 0"
[4770]	1350	set _settings(-backingvisible) 0
[4512]	1351	}
	1352	} else {
[4770]	1353	if { !$_settings(-backingvisible) } {
[4512]	1354	SendCmd "image backing 1"
[4770]	1355	set _settings(-backingvisible) 1
[4512]	1356	}
	1357	SendCmd "image color [Color2RGB $color]"
	1358	}
	1359	}
[4770]	1360	"-backingvisible" {
[4512]	1361	set bool $_settings($what)
	1362	SendCmd "image backing $bool"
	1363	}
[4770]	1364	"-colormap" {
[4512]	1365	set _changed($what) 1
	1366	StartBufferingCommands
	1367	set color [$itk_component(colormap) value]
	1368	set _settings($what) $color
	1369	SetCurrentColormap $color
[4770]	1370	if {$_settings(-colormapdiscrete)} {
	1371	SendCmd "colormap res $_settings(-numcolors) $color"
[4512]	1372	}
	1373	StopBufferingCommands
	1374	EventuallyRequestLegend
	1375	}
[4770]	1376	"-colormapdiscrete" {
[4512]	1377	set bool $_settings($what)
	1378	StartBufferingCommands
	1379	if {$bool} {
[4770]	1380	SendCmd "colormap res $_settings(-numcolors)"
[4512]	1381	} else {
	1382	SendCmd "colormap res default"
	1383	}
	1384	StopBufferingCommands
	1385	EventuallyRequestLegend
	1386	}
[4770]	1387	"-field" {
[4512]	1388	set label [$itk_component(field) value]
	1389	set fname [$itk_component(field) translate $label]
	1390	set _settings($what) $fname
	1391	if { [info exists _fields($fname)] } {
	1392	foreach { label units components } $_fields($fname) break
	1393	if { $components > 1 } {
	1394	set _colorMode vmag
	1395	} else {
	1396	set _colorMode scalar
	1397	}
	1398	set _curFldName $fname
	1399	set _curFldLabel $label
	1400	} else {
	1401	puts stderr "unknown field \"$fname\""
	1402	return
	1403	}
	1404
	1405	# Get the new limits because the field changed.
	1406	SendCmd "dataset scalar $_curFldName"
	1407	#SendCmd "image colormode scalar $_curFldName"
	1408	SendCmd "camera reset"
	1409	DrawLegend
	1410	}
[4770]	1411	"-view3d" {
[4512]	1412	set bool $_settings($what)
	1413	set c $itk_component(view)
	1414	StartBufferingCommands
	1415	# Fix image scale: 0 for contours, 1 for images.
	1416	if { $bool } {
[4770]	1417	set _settings(-opacity) $_settings(-saveopacity)
[4512]	1418	} else {
[4770]	1419	set _settings(-opacity) 100
[4512]	1420	}
[4770]	1421	AdjustSetting -opacity
[4512]	1422	if { $bool } {
	1423	$itk_component(opacity) configure -state normal
	1424	$itk_component(opacity_l) configure -state normal
[4766]	1425	if {$_view(-ortho)} {
[4512]	1426	SendCmd "camera mode ortho"
	1427	} else {
	1428	SendCmd "camera mode persp"
	1429	}
	1430	SendCmd "camera aspect native"
	1431	} else {
	1432	$itk_component(opacity) configure -state disabled
	1433	$itk_component(opacity_l) configure -state disabled
	1434	SendCmd "camera mode image"
[4770]	1435	if {$_settings(-stretchtofit)} {
[4512]	1436	SendCmd "camera aspect window"
	1437	}
	1438	}
	1439	if { $bool } {
[4766]	1440	set q [ViewToQuaternion]
[4512]	1441	$_arcball quaternion $q
	1442	SendCmd "camera orient $q"
	1443	} else {
	1444	bind $c <ButtonPress-1> {}
	1445	bind $c <B1-Motion> {}
	1446	bind $c <ButtonRelease-1> {}
	1447	}
	1448	SendCmd "camera reset"
	1449	# Fix the mouse bindings for rotation/panning and the
	1450	# camera mode. Ideally we'd create a bindtag for these.
	1451	if { $bool } {
	1452	# Bindings for rotation via mouse
	1453	bind $c <ButtonPress-1> \
	1454	[itcl::code $this Rotate click %x %y]
	1455	bind $c <B1-Motion> \
	1456	[itcl::code $this Rotate drag %x %y]
	1457	bind $c <ButtonRelease-1> \
	1458	[itcl::code $this Rotate release %x %y]
	1459	}
	1460	StopBufferingCommands
	1461	}
[4770]	1462	"-window" {
[4512]	1463	set val $_settings($what)
	1464	SendCmd "image window $val"
	1465	}
[4770]	1466	"-level" {
[4512]	1467	set val $_settings($what)
	1468	SendCmd "image level $val"
	1469	}
[4770]	1470	"-legendvisible" {
[4512]	1471	if { !$_settings($what) } {
	1472	$itk_component(view) delete legend
	1473	}
	1474	DrawLegend
	1475	}
[4770]	1476	"-opacity" {
[4512]	1477	set _changed($what) 1
[4770]	1478	if { $_settings(-view3d) } {
	1479	set _settings(-saveopacity) $_settings($what)
[4512]	1480	set val [expr $_settings($what) * 0.01]
	1481	SendCmd "image opacity $val"
	1482	} else {
	1483	SendCmd "image opacity 1.0"
	1484	}
	1485	}
[4770]	1486	"-outline" {
[4512]	1487	set bool $_settings($what)
	1488	SendCmd "outline visible $bool"
	1489	}
[4770]	1490	"-stretchtofit" {
[4512]	1491	set bool $_settings($what)
	1492	if { $bool } {
[4770]	1493	if { $_settings(-view3d) } {
[4512]	1494	SendCmd "camera aspect native"
	1495	} else {
	1496	SendCmd "camera aspect window"
	1497	}
	1498	} else {
	1499	SendCmd "camera aspect native"
	1500	}
	1501	}
[4770]	1502	"-xgrid" - "-ygrid" - "-zgrid" {
	1503	set axis [string tolower [string range $what 1 1]]
	1504	set bool $_settings($what)
	1505	SendCmd "axis grid $axis $bool"
	1506	}
[4512]	1507	default {
	1508	error "don't know how to fix $what"
	1509	}
	1510	}
	1511	}
	1512
	1513	#
	1514	# RequestLegend --
	1515	#
	1516	# Request a new legend from the server. The size of the legend
	1517	# is determined from the height of the canvas.
	1518	#
	1519	# This should be called when
	1520	# 1. A new current colormap is set.
	1521	# 2. Window is resized.
	1522	# 3. The limits of the data have changed. (Just need a redraw).
	1523	# 4. Number of isolines have changed. (Just need a redraw).
	1524	# 5. Legend becomes visible (Just need a redraw).
	1525	#
	1526	itcl::body Rappture::VtkImageViewer::RequestLegend {} {
	1527	set _legendPending 0
	1528	set font "Arial 8"
	1529	set w 12
	1530	set lineht [font metrics $font -linespace]
	1531	# color ramp height = (canvas height) - (min and max value lines) - 2
	1532	set h [expr {$_height - 2 * ($lineht + 2)}]
	1533	set _legendHeight $h
	1534
	1535	set fname $_curFldName
	1536	if { [string match "component*" $fname] } {
	1537	set title ""
	1538	} else {
	1539	if { [info exists _fields($fname)] } {
	1540	foreach { title units } $_fields($fname) break
	1541	if { $units != "" } {
	1542	set title [format "%s (%s)" $title $units]
	1543	}
	1544	} else {
	1545	set title $fname
	1546	}
	1547	}
	1548	# If there's a title too, substract one more line
	1549	if { $title != "" } {
	1550	incr h -$lineht
	1551	}
	1552	if { $h < 1 } {
	1553	return
	1554	}
	1555	# Set the legend on the first image dataset.
	1556	if { $_currentColormap != "" && $_currentColormap != "none" } {
[4759]	1557	#SendCmd "legend $_currentColormap scalar $_curFldName {} $w $h 0"
	1558	SendCmd "legend2 $_currentColormap $w $h"
[4512]	1559	}
	1560	}
	1561
	1562	#
	1563	# SetCurrentColormap --
	1564	#
	1565	itcl::body Rappture::VtkImageViewer::SetCurrentColormap { name } {
	1566	# Keep track of the colormaps that we build.
	1567	if { $name != "none" && ![info exists _colormaps($name)] } {
	1568	BuildColormap $name
	1569	set _colormaps($name) 1
	1570	}
	1571	set _currentColormap $name
	1572	SendCmd "image colormap $_currentColormap"
	1573	}
	1574
	1575
	1576	#
	1577	# BuildColormap --
	1578	#
	1579	# Build the designated colormap on the server.
	1580	#
	1581	itcl::body Rappture::VtkImageViewer::BuildColormap { name } {
	1582	set cmap [ColorsToColormap $name]
	1583	if { [llength $cmap] == 0 } {
	1584	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
	1585	}
	1586	set wmap "0.0 1.0 1.0 1.0"
	1587	SendCmd "colormap add $name { $cmap } { $wmap }"
	1588	}
	1589
	1590	# ----------------------------------------------------------------------
	1591	# CONFIGURATION OPTION: -mode
	1592	# ----------------------------------------------------------------------
	1593	itcl::configbody Rappture::VtkImageViewer::mode {
	1594	switch -- $itk_option(-mode) {
	1595	"volume" {
[4770]	1596	set _settings(-view3d) 1
[4512]	1597	}
	1598	"vtkimage" {
[4770]	1599	set _settings(-view3d) 0
[4512]	1600	}
	1601	default {
	1602	error "unknown mode settings \"$itk_option(-mode)\""
	1603	}
	1604	}
	1605	if { !$_reset } {
[4770]	1606	AdjustSetting -view3d
[4512]	1607	}
	1608	}
	1609
	1610	# ----------------------------------------------------------------------
	1611	# CONFIGURATION OPTION: -plotbackground
	1612	# ----------------------------------------------------------------------
	1613	itcl::configbody Rappture::VtkImageViewer::plotbackground {
	1614	if { [isconnected] } {
	1615	set rgb [Color2RGB $itk_option(-plotbackground)]
	1616	if { !$_reset } {
	1617	SendCmd "screen bgcolor $rgb"
	1618	}
	1619	$itk_component(view) configure -background $itk_option(-plotbackground)
	1620	}
	1621	}
	1622
	1623	# ----------------------------------------------------------------------
	1624	# CONFIGURATION OPTION: -plotforeground
	1625	# ----------------------------------------------------------------------
	1626	itcl::configbody Rappture::VtkImageViewer::plotforeground {
	1627	if { [isconnected] } {
	1628	set rgb [Color2RGB $itk_option(-plotforeground)]
	1629	if { !$_reset } {
[4768]	1630	SendCmd "axis color all $rgb"
[4512]	1631	SendCmd "outline color $rgb"
	1632	}
	1633	}
	1634	}
	1635
	1636	itcl::body Rappture::VtkImageViewer::BuildImageTab {} {
	1637
	1638	set fg [option get $itk_component(hull) font Font]
	1639	#set bfg [option get $itk_component(hull) boldFont Font]
	1640
	1641	set inner [$itk_component(main) insert end \
	1642	-title "Image Settings" \
	1643	-icon [Rappture::icon contour2]]
	1644	$inner configure -borderwidth 4
	1645
	1646	checkbutton $inner.legend \
	1647	-text "Legend" \
[4770]	1648	-variable [itcl::scope _settings(-legendvisible)] \
	1649	-command [itcl::code $this AdjustSetting -legendvisible] \
[4512]	1650	-font "Arial 9"
	1651
	1652	checkbutton $inner.outline \
	1653	-text "Outline" \
[4770]	1654	-variable [itcl::scope _settings(-outline)] \
	1655	-command [itcl::code $this AdjustSetting -outline] \
[4512]	1656	-font "Arial 9"
	1657
	1658	checkbutton $inner.backing \
	1659	-text "Backing" \
[4770]	1660	-variable [itcl::scope _settings(-backingvisible)] \
	1661	-command [itcl::code $this AdjustSetting -backingvisible] \
[4512]	1662	-font "Arial 9"
	1663
	1664	checkbutton $inner.stretch \
	1665	-text "Stretch to fit" \
[4770]	1666	-variable [itcl::scope _settings(-stretchtofit)] \
	1667	-command [itcl::code $this AdjustSetting -stretchtofit] \
[4512]	1668	-font "Arial 9"
	1669
	1670	checkbutton $inner.colormapDiscrete \
	1671	-text "Discrete Colormap" \
[4770]	1672	-variable [itcl::scope _settings(-colormapdiscrete)] \
	1673	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
[4512]	1674	-font "Arial 9"
	1675
	1676	itk_component add field_l {
	1677	label $inner.field_l -text "Field" -font "Arial 9"
	1678	} {
	1679	ignore -font
	1680	}
	1681	itk_component add field {
	1682	Rappture::Combobox $inner.field -width 10 -editable no
	1683	}
	1684	bind $inner.field <<Value>> \
[4770]	1685	[itcl::code $this AdjustSetting -field]
[4512]	1686
	1687	label $inner.colormap_l -text "Colormap" -font "Arial 9"
	1688	itk_component add colormap {
	1689	Rappture::Combobox $inner.colormap -width 10 -editable no
	1690	}
	1691	$inner.colormap choices insert end [GetColormapList -includeNone]
	1692
	1693	$itk_component(colormap) value "BCGYR"
	1694	bind $inner.colormap <<Value>> \
[4770]	1695	[itcl::code $this AdjustSetting -colormap]
[4512]	1696
	1697	label $inner.backingcolor_l -text "Backing Color" -font "Arial 9"
	1698	itk_component add backingcolor {
	1699	Rappture::Combobox $inner.backingcolor -width 10 -editable no
	1700	}
	1701	$inner.backingcolor choices insert end \
	1702	"black" "black" \
	1703	"blue" "blue" \
	1704	"cyan" "cyan" \
	1705	"green" "green" \
	1706	"grey" "grey" \
	1707	"magenta" "magenta" \
	1708	"orange" "orange" \
	1709	"red" "red" \
	1710	"white" "white" \
	1711	"none" "none"
	1712
[4770]	1713	$itk_component(backingcolor) value $_settings(-backingcolor)
[4512]	1714	bind $inner.backingcolor <<Value>> \
[4770]	1715	[itcl::code $this AdjustSetting -backingcolor]
[4512]	1716
	1717	label $inner.background_l -text "Background Color" -font "Arial 9"
	1718	itk_component add background {
	1719	Rappture::Combobox $inner.background -width 10 -editable no
	1720	}
	1721	$inner.background choices insert end \
	1722	"black" "black" \
	1723	"white" "white" \
	1724	"grey" "grey"
	1725
	1726	$itk_component(background) value "white"
[4770]	1727	bind $inner.background <<Value>> \
	1728	[itcl::code $this AdjustSetting -background]
[4512]	1729
	1730	itk_component add opacity_l {
	1731	label $inner.opacity_l -text "Opacity" -font "Arial 9"
	1732	} {
	1733	ignore -font
	1734	}
	1735	itk_component add opacity {
	1736	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
[4770]	1737	-variable [itcl::scope _settings(-opacity)] \
[4512]	1738	-showvalue off \
[4770]	1739	-command [itcl::code $this AdjustSetting -opacity]
[4512]	1740	}
	1741
	1742	itk_component add window_l {
	1743	label $inner.window_l -text "Window" -font "Arial 9"
	1744	} {
	1745	ignore -font
	1746	}
	1747	itk_component add window {
	1748	::scale $inner.window -from 0 -to 255 -orient horizontal \
[4770]	1749	-variable [itcl::scope _settings(-window)] \
[4512]	1750	-showvalue off \
[4770]	1751	-command [itcl::code $this AdjustSetting -window]
[4512]	1752	}
	1753	itk_component add level_l {
	1754	label $inner.level_l -text "Level" -font "Arial 9"
	1755	} {
	1756	ignore -font
	1757	}
	1758	itk_component add level {
	1759	::scale $inner.level -from 0 -to 255 -orient horizontal \
[4770]	1760	-variable [itcl::scope _settings(-level)] \
[4512]	1761	-showvalue off \
[4770]	1762	-command [itcl::code $this AdjustSetting -level]
[4512]	1763	}
	1764
	1765	frame $inner.separator1 -height 2 -relief sunken -bd 1
	1766	frame $inner.separator2 -height 2 -relief sunken -bd 1
	1767
	1768	blt::table $inner \
	1769	0,0 $inner.field_l -anchor w -pady 2 \
	1770	0,1 $inner.field -anchor w -pady 2 -fill x \
	1771	1,0 $inner.colormap_l -anchor w -pady 2 \
	1772	1,1 $inner.colormap -anchor w -pady 2 -fill x \
	1773	2,0 $inner.backingcolor_l -anchor w -pady 2 \
	1774	2,1 $inner.backingcolor -anchor w -pady 2 -fill x \
	1775	3,0 $inner.background_l -anchor w -pady 2 \
	1776	3,1 $inner.background -anchor w -pady 2 -fill x \
	1777	4,0 $inner.backing -anchor w -pady 2 -cspan 2 \
	1778	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
	1779	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
	1780	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
	1781	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
	1782	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
	1783	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
	1784	15,0 $inner.opacity_l -anchor w -pady 2 \
	1785	15,1 $inner.opacity -fill x -pady 2 \
	1786	16,0 $inner.window_l -anchor w -pady 2 \
	1787	16,1 $inner.window -fill x -pady 2 \
	1788	17,0 $inner.level_l -anchor w -pady 2 \
	1789	17,1 $inner.level -fill x -pady 2
	1790
	1791	blt::table configure $inner r* c* -resize none
	1792	blt::table configure $inner r19 c1 -resize expand
	1793	}
	1794
	1795	itcl::body Rappture::VtkImageViewer::BuildAxisTab {} {
	1796
	1797	set fg [option get $itk_component(hull) font Font]
	1798	#set bfg [option get $itk_component(hull) boldFont Font]
	1799
	1800	set inner [$itk_component(main) insert end \
	1801	-title "Axis Settings" \
	1802	-icon [Rappture::icon axis2]]
	1803	$inner configure -borderwidth 4
	1804
	1805	checkbutton $inner.visible \
	1806	-text "Axes" \
[4770]	1807	-variable [itcl::scope _settings(-axisvisible)] \
	1808	-command [itcl::code $this AdjustSetting -axisvisible] \
[4512]	1809	-font "Arial 9"
	1810	checkbutton $inner.labels \
	1811	-text "Axis Labels" \
[4770]	1812	-variable [itcl::scope _settings(-axislabels)] \
	1813	-command [itcl::code $this AdjustSetting -axislabels] \
[4512]	1814	-font "Arial 9"
	1815	label $inner.grid_l -text "Grid" -font "Arial 9"
	1816	checkbutton $inner.xgrid \
	1817	-text "X" \
[4770]	1818	-variable [itcl::scope _settings(-xgrid)] \
	1819	-command [itcl::code $this AdjustSetting -xgrid] \
[4512]	1820	-font "Arial 9"
	1821	checkbutton $inner.ygrid \
	1822	-text "Y" \
[4770]	1823	-variable [itcl::scope _settings(-ygrid)] \
	1824	-command [itcl::code $this AdjustSetting -ygrid] \
[4512]	1825	-font "Arial 9"
	1826	checkbutton $inner.zgrid \
	1827	-text "Z" \
[4770]	1828	-variable [itcl::scope _settings(-zgrid)] \
	1829	-command [itcl::code $this AdjustSetting -zgrid] \
[4512]	1830	-font "Arial 9"
	1831	checkbutton $inner.minorticks \
	1832	-text "Minor Ticks" \
[4770]	1833	-variable [itcl::scope _settings(-axisminorticks)] \
	1834	-command [itcl::code $this AdjustSetting -axisminorticks] \
[4512]	1835	-font "Arial 9"
	1836
	1837	label $inner.mode_l -text "Mode" -font "Arial 9"
	1838
	1839	itk_component add axisflymode {
	1840	Rappture::Combobox $inner.mode -width 10 -editable no
	1841	}
	1842	$inner.mode choices insert end \
	1843	"static_triad" "static" \
	1844	"closest_triad" "closest" \
	1845	"furthest_triad" "farthest" \
	1846	"outer_edges" "outer"
[4770]	1847	$itk_component(axisflymode) value $_settings(-axisflymode)
	1848	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
[4512]	1849
	1850	blt::table $inner \
	1851	0,0 $inner.visible -anchor w -cspan 4 \
	1852	1,0 $inner.labels -anchor w -cspan 4 \
	1853	2,0 $inner.minorticks -anchor w -cspan 4 \
	1854	4,0 $inner.grid_l -anchor w \
	1855	4,1 $inner.xgrid -anchor w \
	1856	4,2 $inner.ygrid -anchor w \
	1857	4,3 $inner.zgrid -anchor w \
	1858	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
	1859	5,1 $inner.mode -fill x -cspan 3
	1860
	1861	blt::table configure $inner r* c* -resize none
	1862	blt::table configure $inner r7 c6 -resize expand
	1863	blt::table configure $inner r3 -height 0.125i
	1864	}
	1865
	1866	itcl::body Rappture::VtkImageViewer::BuildCameraTab {} {
	1867	set inner [$itk_component(main) insert end \
	1868	-title "Camera Settings" \
	1869	-icon [Rappture::icon camera]]
	1870	$inner configure -borderwidth 4
	1871
	1872	label $inner.view_l -text "view" -font "Arial 9"
	1873	set f [frame $inner.view]
	1874	foreach side { front back left right top bottom } {
	1875	button $f.$side -image [Rappture::icon view$side] \
	1876	-command [itcl::code $this SetOrientation $side]
	1877	Rappture::Tooltip::for $f.$side "Change the view to $side"
	1878	pack $f.$side -side left
	1879	}
	1880
	1881	blt::table $inner \
	1882	0,0 $inner.view_l -anchor e -pady 2 \
	1883	0,1 $inner.view -anchor w -pady 2
[4770]	1884	blt::table configure $inner r0 -resize none
[4512]	1885
	1886	set labels { qx qy qz qw xpan ypan zoom }
	1887	set row 1
	1888	foreach tag $labels {
	1889	label $inner.${tag}label -text $tag -font "Arial 9"
	1890	entry $inner.${tag} -font "Arial 9" -bg white \
[4766]	1891	-textvariable [itcl::scope _view(-$tag)]
[4512]	1892	bind $inner.${tag} <Return> \
[4766]	1893	[itcl::code $this camera set -${tag}]
[4512]	1894	bind $inner.${tag} <KP_Enter> \
[4766]	1895	[itcl::code $this camera set -${tag}]
[4512]	1896	blt::table $inner \
	1897	$row,0 $inner.${tag}label -anchor e -pady 2 \
	1898	$row,1 $inner.${tag} -anchor w -pady 2
	1899	blt::table configure $inner r$row -resize none
	1900	incr row
	1901	}
	1902	checkbutton $inner.ortho \
	1903	-text "Orthographic Projection" \
[4766]	1904	-variable [itcl::scope _view(-ortho)] \
	1905	-command [itcl::code $this camera set -ortho] \
[4512]	1906	-font "Arial 9"
	1907	blt::table $inner \
	1908	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
	1909	blt::table configure $inner r$row -resize none
	1910	incr row
	1911
[4770]	1912	blt::table configure $inner c* -resize none
[4512]	1913	blt::table configure $inner c2 -resize expand
	1914	blt::table configure $inner r$row -resize expand
	1915	}
	1916
	1917	#
	1918	# camera --
	1919	#
	1920	itcl::body Rappture::VtkImageViewer::camera {option args} {
	1921	switch -- $option {
	1922	"show" {
	1923	puts [array get _view]
	1924	}
	1925	"set" {
[4766]	1926	set what [lindex $args 0]
	1927	set x $_view($what)
[4512]	1928	set code [catch { string is double $x } result]
	1929	if { $code != 0 \|\| !$result } {
	1930	return
	1931	}
[4766]	1932	switch -- $what {
	1933	"-ortho" {
	1934	if {$_view($what)} {
[4512]	1935	SendCmd "camera mode ortho"
	1936	} else {
	1937	SendCmd "camera mode persp"
	1938	}
	1939	}
[4766]	1940	"-xpan" - "-ypan" {
[4512]	1941	PanCamera
	1942	}
[4766]	1943	"-qx" - "-qy" - "-qz" - "-qw" {
	1944	set q [ViewToQuaternion]
[4512]	1945	$_arcball quaternion $q
	1946	EventuallyRotate $q
	1947	}
[4766]	1948	"-zoom" {
	1949	SendCmd "camera zoom $_view($what)"
[4512]	1950	}
	1951	}
	1952	}
	1953	}
	1954	}
	1955
	1956	itcl::body Rappture::VtkImageViewer::GetVtkData { args } {
	1957	set bytes ""
	1958	foreach dataobj [get] {
	1959	foreach comp [$dataobj components] {
	1960	set tag $dataobj-$comp
	1961	set contents [$dataobj vtkdata $comp]
	1962	append bytes "$contents\n"
	1963	}
	1964	}
	1965	return [list .vtk $bytes]
	1966	}
	1967
	1968	itcl::body Rappture::VtkImageViewer::GetImage { args } {
	1969	if { [image width $_image(download)] > 0 &&
	1970	[image height $_image(download)] > 0 } {
	1971	set bytes [$_image(download) data -format "jpeg -quality 100"]
	1972	set bytes [Rappture::encoding::decode -as b64 $bytes]
	1973	return [list .jpg $bytes]
	1974	}
	1975	return ""
	1976	}
	1977
	1978	itcl::body Rappture::VtkImageViewer::BuildDownloadPopup { popup command } {
	1979	Rappture::Balloon $popup \
	1980	-title "[Rappture::filexfer::label downloadWord] as..."
	1981	set inner [$popup component inner]
	1982	label $inner.summary -text "" -anchor w
	1983	radiobutton $inner.vtk_button -text "VTK data file" \
	1984	-variable [itcl::scope _downloadPopup(format)] \
	1985	-font "Arial 9 " \
	1986	-value vtk
	1987	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
	1988	radiobutton $inner.image_button -text "Image File" \
	1989	-variable [itcl::scope _downloadPopup(format)] \
	1990	-font "Arial 9 " \
	1991	-value image
	1992	Rappture::Tooltip::for $inner.image_button \
	1993	"Save as digital image."
	1994
	1995	button $inner.ok -text "Save" \
	1996	-highlightthickness 0 -pady 2 -padx 3 \
	1997	-command $command \
	1998	-compound left \
	1999	-image [Rappture::icon download]
	2000
	2001	button $inner.cancel -text "Cancel" \
	2002	-highlightthickness 0 -pady 2 -padx 3 \
	2003	-command [list $popup deactivate] \
	2004	-compound left \
	2005	-image [Rappture::icon cancel]
	2006
	2007	blt::table $inner \
	2008	0,0 $inner.summary -cspan 2 \
	2009	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
	2010	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
	2011	4,1 $inner.cancel -width .9i -fill y \
	2012	4,0 $inner.ok -padx 2 -width .9i -fill y
	2013	blt::table configure $inner r3 -height 4
	2014	blt::table configure $inner r4 -pady 4
	2015	raise $inner.image_button
	2016	$inner.vtk_button invoke
	2017	return $inner
	2018	}
	2019
	2020	#
	2021	# SetObjectStyle --
	2022	#
	2023	# Set the style of the image/contour object. This gets calls
	2024	# for each dataset once as it is loaded. It can overridden by
	2025	# the user controls.
	2026	#
	2027	#
	2028	itcl::body Rappture::VtkImageViewer::SetObjectStyle { dataobj comp } {
	2029	# Parse style string.
	2030	set tag $dataobj-$comp
	2031	array set style {
	2032	-color none
	2033	-opacity 1.0
	2034	}
	2035	set stylelist [$dataobj style $comp]
	2036	if { $stylelist != "" } {
	2037	array set style $stylelist
	2038	}
	2039	# This is too complicated. We want to set the colormap, number of
	2040	# isolines and opacity for the dataset. They can be the default values,
	2041	# the style hints loaded with the dataset, or set by user controls. As
	2042	# datasets get loaded, they first use the defaults that are overidden
	2043	# by the style hints. If the user changes the global controls, then that
	2044	# overrides everything else. I don't know what it means when global
	2045	# controls are specified as style hints by each dataset. It complicates
	2046	# the code to handle aberrant cases.
	2047
[4770]	2048	if { $_changed(-opacity) } {
	2049	set style(-opacity) [expr $_settings(-opacity) * 0.01]
[4512]	2050	}
[4770]	2051	if { $_changed(-colormap) } {
	2052	set style(-color) $_settings(-colormap)
[4512]	2053	}
	2054	if { $_currentColormap == "" } {
	2055	$itk_component(colormap) value $style(-color)
	2056	}
	2057	if { [info exists style(-stretchtofit)] } {
[4770]	2058	set _settings(-stretchtofit) $style(-stretchtofit)
	2059	AdjustSetting -stretchToFit
[4512]	2060	}
	2061	SendCmd "outline add $tag"
	2062	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
[4770]	2063	SendCmd "outline visible $_settings(-outline) $tag"
[4512]	2064	SendCmd "image add $tag"
	2065	SetCurrentColormap $style(-color)
	2066	set color [$itk_component(backingcolor) value]
	2067	SendCmd "image color [Color2RGB $color] $tag"
	2068	SendCmd "image opacity $style(-opacity) $tag"
[4770]	2069	set _settings(-opacity) [expr $style(-opacity) * 100.0]
[4512]	2070	}
	2071
	2072	itcl::body Rappture::VtkImageViewer::IsValidObject { dataobj } {
	2073	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
	2074	return 0
	2075	}
	2076	return 1
	2077	}
	2078
	2079	# ----------------------------------------------------------------------
	2080	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
	2081	#
	2082	# Invoked automatically whenever the "legend" command comes in from
	2083	# the rendering server. Indicates that binary image data with the
	2084	# specified <size> will follow.
	2085	# ----------------------------------------------------------------------
	2086	itcl::body Rappture::VtkImageViewer::ReceiveLegend { colormap title min max size } {
	2087	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
	2088	if { [isconnected] } {
	2089	set bytes [ReceiveBytes $size]
	2090	if { ![info exists _image(legend)] } {
	2091	set _image(legend) [image create photo]
	2092	}
	2093	$_image(legend) configure -data $bytes
	2094	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
	2095	if { [catch {DrawLegend} errs] != 0 } {
	2096	global errorInfo
	2097	puts stderr "errs=$errs errorInfo=$errorInfo"
	2098	}
	2099	}
	2100	}
	2101
	2102	#
	2103	# DrawLegend --
	2104	#
	2105	# Draws the legend in the own canvas on the right side of the plot area.
	2106	#
	2107	itcl::body Rappture::VtkImageViewer::DrawLegend {} {
	2108	set fname $_curFldName
	2109	set c $itk_component(view)
	2110	set w [winfo width $c]
	2111	set h [winfo height $c]
	2112	set font "Arial 8"
	2113	set lineht [font metrics $font -linespace]
	2114
	2115	if { [string match "component*" $fname] } {
	2116	set title ""
	2117	} else {
	2118	if { [info exists _fields($fname)] } {
	2119	foreach { title units } $_fields($fname) break
	2120	if { $units != "" } {
	2121	set title [format "%s (%s)" $title $units]
	2122	}
	2123	} else {
	2124	set title $fname
	2125	}
	2126	}
	2127	set x [expr $w - 2]
[4770]	2128	if { !$_settings(-legendvisible) } {
[4512]	2129	$c delete legend
	2130	return
	2131	}
	2132	if { [$c find withtag "legend"] == "" } {
	2133	set y 2
	2134	# If there's a legend title, create a text item for the title.
	2135	$c create text $x $y \
[4770]	2136	-anchor ne \
	2137	-fill $itk_option(-plotforeground) -tags "title legend" \
	2138	-font $font
[4512]	2139	if { $title != "" } {
	2140	incr y $lineht
	2141	}
	2142	$c create text $x $y \
[4770]	2143	-anchor ne \
	2144	-fill $itk_option(-plotforeground) -tags "vmax legend" \
	2145	-font $font
	2146	incr y $lineht
[4512]	2147	$c create image $x $y \
	2148	-anchor ne \
	2149	-image $_image(legend) -tags "colormap legend"
	2150	$c create rectangle $x $y 1 1 \
	2151	-fill "" -outline "" -tags "sensor legend"
	2152	$c create text $x [expr {$h-2}] \
	2153	-anchor se \
	2154	-fill $itk_option(-plotforeground) -tags "vmin legend" \
	2155	-font $font
	2156	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
	2157	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
	2158	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
	2159	}
	2160
	2161	set x2 $x
	2162	set iw [image width $_image(legend)]
	2163	set ih [image height $_image(legend)]
	2164	set x1 [expr $x2 - ($iw*12)/10]
	2165
	2166	$c bind title <ButtonPress> [itcl::code $this Combo post]
	2167	$c bind title <Enter> [itcl::code $this Combo activate]
	2168	$c bind title <Leave> [itcl::code $this Combo deactivate]
	2169	# Reset the item coordinates according the current size of the plot.
	2170	if { [info exists _limits($_curFldName)] } {
	2171	foreach { vmin vmax } $_limits($_curFldName) break
	2172	$c itemconfigure vmin -text [format %g $vmin]
	2173	$c itemconfigure vmax -text [format %g $vmax]
	2174	}
	2175	set y 2
	2176	# If there's a legend title, move the title to the correct position
	2177	if { $title != "" } {
	2178	$c itemconfigure title -text $title
	2179	$c coords title $x $y
	2180	incr y $lineht
	2181	}
	2182	$c coords vmax $x $y
	2183	incr y $lineht
	2184	$c coords colormap $x $y
	2185	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
	2186	$c raise sensor
	2187	$c coords vmin $x [expr {$h - 2}]
	2188	}
	2189
	2190	#
	2191	# EnterLegend --
	2192	#
	2193	itcl::body Rappture::VtkImageViewer::EnterLegend { x y } {
	2194	SetLegendTip $x $y
	2195	}
	2196
	2197	#
	2198	# MotionLegend --
	2199	#
	2200	itcl::body Rappture::VtkImageViewer::MotionLegend { x y } {
	2201	Rappture::Tooltip::tooltip cancel
	2202	set c $itk_component(view)
	2203	set cw [winfo width $c]
	2204	set ch [winfo height $c]
	2205	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
	2206	SetLegendTip $x $y
	2207	}
	2208	}
	2209
	2210	#
	2211	# LeaveLegend --
	2212	#
	2213	itcl::body Rappture::VtkImageViewer::LeaveLegend { } {
	2214	Rappture::Tooltip::tooltip cancel
	2215	.rappturetooltip configure -icon ""
	2216	}
	2217
	2218	#
	2219	# SetLegendTip --
	2220	#
	2221	itcl::body Rappture::VtkImageViewer::SetLegendTip { x y } {
	2222	set fname $_curFldName
	2223	set c $itk_component(view)
	2224	set w [winfo width $c]
	2225	set h [winfo height $c]
	2226	set font "Arial 8"
	2227	set lineht [font metrics $font -linespace]
	2228
	2229	set ih [image height $_image(legend)]
	2230	# Subtract off the offset of the color ramp from the top of the canvas
	2231	set iy [expr $y - ($lineht + 2)]
	2232
	2233	if { [string match "component*" $fname] } {
	2234	set title ""
	2235	} else {
	2236	if { [info exists _fields($fname)] } {
	2237	foreach { title units } $_fields($fname) break
	2238	if { $units != "" } {
	2239	set title [format "%s (%s)" $title $units]
	2240	}
	2241	} else {
	2242	set title $fname
	2243	}
	2244	}
	2245	# If there's a legend title, increase the offset by the line height.
	2246	if { $title != "" } {
	2247	incr iy -$lineht
	2248	}
	2249
	2250	# Make a swatch of the selected color
	2251	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
	2252	return
	2253	}
	2254
	2255	if { ![info exists _image(swatch)] } {
	2256	set _image(swatch) [image create photo -width 24 -height 24]
	2257	}
	2258	set color [eval format "\#%02x%02x%02x" $pixel]
	2259	$_image(swatch) put black -to 0 0 23 23
	2260	$_image(swatch) put $color -to 1 1 22 22
	2261
	2262	# Compute the value of the point
	2263	if { [info exists _limits($fname)] } {
	2264	foreach { vmin vmax } $_limits($fname) break
	2265	set t [expr 1.0 - (double($iy) / double($ih-1))]
	2266	set value [expr $t * ($vmax - $vmin) + $vmin]
	2267	} else {
	2268	set value 0.0
	2269	}
	2270	set tipx [expr $x + 15]
	2271	set tipy [expr $y - 5]
	2272	.rappturetooltip configure -icon $_image(swatch)
	2273	if { [info exists _isolines($y)] } {
	2274	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
	2275	} else {
	2276	Rappture::Tooltip::text $c [format "$title %g" $value]
	2277	}
	2278	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
	2279	}
	2280
	2281	# ----------------------------------------------------------------------
	2282	# USAGE: _dropdown post
	2283	# USAGE: _dropdown unpost
	2284	# USAGE: _dropdown select
	2285	#
	2286	# Used internally to handle the dropdown list for this combobox. The
	2287	# post/unpost options are invoked when the list is posted or unposted
	2288	# to manage the relief of the controlling button. The select option
	2289	# is invoked whenever there is a selection from the list, to assign
	2290	# the value back to the gauge.
	2291	# ----------------------------------------------------------------------
	2292	itcl::body Rappture::VtkImageViewer::Combo {option} {
	2293	set c $itk_component(view)
	2294	switch -- $option {
	2295	post {
	2296	foreach { x1 y1 x2 y2 } [$c bbox title] break
	2297	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
	2298	set x [expr $x1 + [winfo rootx $itk_component(view)]]
	2299	set y [expr $y2 + [winfo rooty $itk_component(view)]]
	2300	tk_popup $itk_component(fieldmenu) $x $y
	2301	}
	2302	activate {
	2303	$c itemconfigure title -fill red
	2304	}
	2305	deactivate {
	2306	$c itemconfigure title -fill $itk_option(-plotforeground)
	2307	}
	2308	invoke {
	2309	$itk_component(field) value $_curFldLabel
[4770]	2310	AdjustSetting -field
[4512]	2311	}
	2312	default {
	2313	error "bad option \"$option\": should be post, unpost, select"
	2314	}
	2315	}
	2316	}
	2317
	2318	itcl::body Rappture::VtkImageViewer::SetOrientation { side } {
	2319	array set positions {
	2320	front "0.707107 0.707107 0 0"
	2321	back "0 0 0.707107 0.707107"
	2322	left "0.5 0.5 -0.5 -0.5"
	2323	right "0.5 0.5 0.5 0.5"
	2324	top "1 0 0 0"
	2325	bottom "0 1 0 0"
	2326	}
[4766]	2327	foreach name { -qw -qx -qy -qz } value $positions($side) {
[4512]	2328	set _view($name) $value
	2329	}
[4766]	2330	set q [ViewToQuaternion]
[4512]	2331	$_arcball quaternion $q
	2332	SendCmd "camera orient $q"
	2333	SendCmd "camera reset"
[4766]	2334	set _view(-xpan) 0
	2335	set _view(-ypan) 0
	2336	set _view(-zoom) 1.0
[4512]	2337	}

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