com.degrafa.geometry.splines.CardinalSpline

Public Properties

	Property		Defined by
		alpha : Number The alpha setting that applies to this object.	Geometry
		autoClearGraphicsTarget : Boolean When using a graphicsTarget and if this property is set to true the draw phase will clear the graphics context before drawing.	Geometry
		bottom : Number When set, the bottom of the layout will be located offset from the bottom of it's parent.	Geometry
		bounds : Rectangle The tight bounds of this element as represented by a Rectangle.	Geometry
		clippingRectangle : Rectangle A clipping rectangle to use when rendering this geometry.	Geometry
		closed : Boolean [write-only] [set] closed Create a closed-loop spline from the current knot set	CardinalSpline
		commandStack : CommandStack Provides access to the command stack.	Geometry
		currentState : String The current view state.	Geometry
		data : Object Allows a short hand property setting that is specific to and parsed by each geometry object.	Geometry
		decoratorCollection : DecoratorCollection Access to the Decorator collection object for this Geometry object.	Geometry
		decorators : Array A array of IDecorator objects to be applied on this Geometry.	Geometry
		document : Object The MXML document that created this object.	DegrafaObject
		enableEvents : Boolean Enable events for this object.	DegrafaObject
		fill : IGraphicsFill Defines the fill object that will be used for rendering this geometry object.	Geometry
		filters : Array An array of BitmapFilter objects applied to this Geometry.	Geometry
		geometricLength : Number Returns geometric length of this object.	Geometry
		geometry : Array A array of IGeometryComposition objects.	Geometry
		geometryCollection : GeometryCollection Access to the Degrafa geometry collection object for this geometry object.	Geometry
		graphicsTarget : Array One or more display object's that this Geometry is to be drawn to.	Geometry
		graphicsTargetCollection : DisplayObjectCollection Access to the Degrafa target collection object for this geometry object.	Geometry
		hasDecorators : Boolean Returns true if this Geometry has decorators.	Geometry
		hasEventManager : Boolean Tests to see if a EventDispatcher instance has been created for this object.	DegrafaObject
		hasFilters : Boolean Returns true if this Geometry has filters.	Geometry
		hasLayout : Boolean Returns true if this Geometry has layout.	Geometry
		hasStates : Boolean Returns true if this Geometry has states.	Geometry
		hasTriggers : Boolean Returns true if this Geometry has triggers.	Geometry
		height : Number Defines the height of the layout boundary.	Geometry
		horizontalCenter : Number When set, if left or right is not set, the layout will be centered horizontally offset by the numeric value of this property.	Geometry
		id : String The identifier used by document to refer to this object.	DegrafaObject
		IGraphicParent : IGraphic	Geometry
		inheritFill : Boolean If set to true and no fill is defined and there is a parent object then this object will walk up through the parents to retrive a fill object.	Geometry
		inheritStroke : Boolean If set to true and no stroke is defined and there is a parent object then this object will walk up through the parents to retrive a stroke object.	Geometry
		invalidated : Boolean Specifies whether this object is to be re calculated on the next cycle.	Geometry
		isInitialized : Boolean	DegrafaObject
		isInvalidated : Boolean Returns true if this Geometry object is invalidated	Geometry
		isRootGeometry : Boolean Returns true if this Geometry object is a root Geometry Object.	Geometry
		knotCount : int Access the knot count	BasicSpline
		knots : Object Assign the knot collection using a shorthand data value, similar to the Geometry data setter.	BasicSpline
		layoutConstraint : LayoutConstraint The layout constraint that is used for positioning/sizing this geometry object.	Geometry
		_layoutMatrix : Matrix Access to the layout matrix if this Geometry has layout.	Geometry
		layoutRectangle : Rectangle Returns the constraint based layout rectangle for this object or bounds if no layout constraint is specified.	Geometry
		left : Number When set, the left of the layout will be located offset by the value of this property multiplied by the containing width.	Geometry
		maintainAspectRatio : Boolean When true, the size of the layout will always maintain an aspect ratio relative to the ratio of the current width and height properties, even if those properties are not in control of the height and width of the layout.	Geometry
		mask : IGeometryComposition A separate geometry object to use as a mask when rendering this geometry.	Geometry
		maskMode : String The mode used when this object is being masked by the geometry assigned to the mask property.	Geometry
		maskSpace : String The coordinate space within which the referenced mask geometry is rendered before being applied as a mask (respecting maskMode) to this object.	Geometry
		maxHeight : Number The maximum height that can be applied to the layout.	Geometry
		maxWidth : Number The maximum width that can be applied to the layout.	Geometry
		maxX : Number The maximum x location that can be applied to the layout.	Geometry
		maxY : Number The maximum y location that can be applied to the layout.	Geometry
		minHeight : Number The minimum height that can be applied to the layout.	Geometry
		minWidth : Number The minimum width that can be applied to the layout.	Geometry
		minX : Number The minimum x location that can be applied to the layout.	Geometry
		minY : Number The minimum y location that can be applied to the layout.	Geometry
		name : String The name that refers to this object.	DegrafaObject
		objectBindings : Array	DegrafaObject
		parent : IDegrafaObject The current degrafa object parent.	DegrafaObject
		percentHeight : Number When set, the height of the layout will be set as the value of this property multiplied by the containing height.	Geometry
		percentWidth : Number When set, the width of the layout will be set as the value of this property multiplied by the containing width.	Geometry
		pointCollection : GraphicPointCollection Access to the Degrafa point collection object for this spline.	BasicSpline
		points : Array Access the array of points that describe the knot set.	BasicSpline
		quadApproximation : Array Access the direct sequence of quadratic Bezier data that approximates the spline, including index into starting quad at each knot.	BasicSpline
		right : Number When set, the right of the layout will be located offset by the value of this property multiplied by the containing width.	Geometry
		scaleOnLayout : Boolean When using layout this flag will determine if you want Scale to be applied to fit layout rules	Geometry
		spline : IPlottableSpline `[set] spline` Assign the reference to the `IPlottableSpline` providing the computational basis for this Degrafa spline.	BasicSpline
		state : String The state at which to draw this object.	Geometry
		stateEvent : String The state event at which to draw this object.	Geometry
		states : Array An array of states defined for this Geometry.	Geometry
		stroke : IGraphicsStroke Defines the stroke object that will be used for rendering this geometry object.	Geometry
		styleName : Object The css style name associated with this Geometry.	Geometry
		suppressEventProcessing : Boolean Temporarily suppress event processing for this object.	DegrafaObject
		targetCoordinateSpace : DisplayObject The display object that defines the coordinate system to use.	Geometry
		tension : Number [write-only] [set] tension Set the spline's tension	CardinalSpline
		top : Number When set, the top of the layout will be located offset from the top of it's parent.	Geometry
		transform : ITransform Defines the transform object that will be used for rendering this geometry object.	Geometry
		transformBounds : Rectangle Returns a transformed version of this objects bounds as represented by a Rectangle.	Geometry
		transformContext : Matrix A reference to the transformation matrix context within which local transforms will be applied.	Geometry
		triggers : Array An array of ITrigger objects that this Geometry object will use.	Geometry
		verticalCenter : Number When set, if top or bottom is not set, the layout will be centered vertically offset by the numeric value of this property.	Geometry
		visible : Boolean Controls the visibility of this geometry object.	Geometry
		width : Number Defines the width of the layout.	Geometry
		x : Number Defines the x location (top left) of the layout.	Geometry
		y : Number Defines the y location (top left) of the layout.	Geometry

Protected Properties

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	Property		Defined by
		_count : uint = 0	BasicSpline
		eventDispatcher : EventDispatcher EventDispatcher instance for this object.	DegrafaObject
		_fill : IGraphicsFill	Geometry
		_quads : Array	BasicSpline
		_spline : IPlottableSpline	BasicSpline
		_stroke : IGraphicsStroke	Geometry
		_toBezier : SplineToBezier	BasicSpline

Public Methods

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	Method		Defined by
		CardinalSpline(_myPoints:Array = null) CardinalSpline Construct a new CardinalSpline instance	CardinalSpline
		addControlPoint(x:Number, y:Number):void Adds a new knot to the spline.	BasicSpline
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = true):void Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.	DegrafaObject
		addItem(_x:Number, _y:Number):void	BasicSpline
		angleAt(t:Number):Number Returns the angle of a point t(0-1) on the path.	Geometry
		approximateInterval(val1:Number, val2:Number):Array return an array of quad Bezier approximations to the spline over the specified interval (cartesian or parameteric) - returns null if the values are outside the knot range for a cartesian spline or outside [0,1] for a parametric spline.	BasicSpline
		calculateLayout(childBounds:Rectangle = null):void Performs the specific layout work required by this Geometry.	BasicSpline
		clearGraphicsTargets():void Clears all graphics targets specified in the graphicsTarget array.	Geometry
		derivative(_x:Number):Number	BasicSpline
		dispatchEvent(evt:Event):Boolean Dispatches an event into the event flow.	DegrafaObject
		dispatchPropertyChange(bubbles:Boolean = false, property:Object = null, oldValue:Object = null, newValue:Object = null, source:Object = null):Boolean Dispatches an property change event into the event flow.	DegrafaObject
		draw(graphics:Graphics, rc:Rectangle):void Begins the draw phase for geometry objects.	BasicSpline
		drawToTargets():void Requests a draw for each graphics target specified in the graphicsTarget array.	Geometry
		endDraw(graphics:Graphics):void Ends the draw phase for geometry objects.	Geometry
		eval(_x:Number):Number	BasicSpline
		getX(_t:Number):Number x-coordinate of the Catmull-Rom spline at the specified t-parameter	CardinalSpline
		getXPrime(_t:Number):Number dx/dt of Catmull-Rom spline	CardinalSpline
		getY(_t:Number):Number y-coordinate of the Catmull-Rom spline at the specified t-parameter	CardinalSpline
		getYPrime(_t:Number):Number dx/dt of Catmull-Rom spline	CardinalSpline
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	DegrafaObject
		initChange(property:String, oldValue:Object, newValue:Object, source:Object):void Helper function for dispatching property changes	DegrafaObject
		initFill(graphics:Graphics, rc:Rectangle):void Initialise the fill for this geometry object.	Geometry
		initialized(document:Object, id:String):void Called after the implementing object has been created and all component properties specified on the MXML tag have been initialized.	DegrafaObject
		initStroke(graphics:Graphics, rc:Rectangle):void Initialise the stroke for this geometry object.	Geometry
		pointAt(t:Number):Point Returns the point at t(0-1) on this object.	Geometry
		preDraw():void Performs any pre calculation that is required to successfully render this element.	BasicSpline
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	DegrafaObject
		styleChanged(styleProp:String):void Called when the value of a style property is changed.	Geometry
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	DegrafaObject

Protected Methods

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	Method		Defined by
		approximateCartesianInterval(val1:Number, val2:Number):Array	BasicSpline
		initPoints():void	BasicSpline
		initPointsCollection():void Initialize the point collection by creating it and adding the event listener.	BasicSpline
		propertyChangeHandler(event:PropertyChangeEvent):void Principle event handler for any property changes to a geometry object or it's child objects.	BasicSpline

Events

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	Event		Summary	Defined by
		initialize		DegrafaObject
		propertyChange		DegrafaObject

Property detail

closed

property

closed:Boolean [write-only]

[set] closed Create a closed-loop spline from the current knot set

This property can be used as the source for data binding.

Implementation
public function set closed(value:Boolean):void

tension

property

tension:Number [write-only]

[set] tension Set the spline's tension

This property can be used as the source for data binding.

Implementation
public function set tension(value:Number):void

Constructor detail

CardinalSpline

()

constructor

public function CardinalSpline(_myPoints:Array = null)

CardinalSpline Construct a new CardinalSpline instance

Parameters

_myPoints:Array (default = null)

Method detail

getX

()

method

public override function getX(_t:Number):Number

x-coordinate of the Catmull-Rom spline at the specified t-parameter

Parameters

_t:Number

Returns

Number

getXPrime

()

method

public override function getXPrime(_t:Number):Number

dx/dt of Catmull-Rom spline

Parameters

_t:Number

Returns

Number

getY

()

method

public override function getY(_t:Number):Number

y-coordinate of the Catmull-Rom spline at the specified t-parameter

Parameters

_t:Number

Returns

Number

getYPrime

()

method

public override function getYPrime(_t:Number):Number

dx/dt of Catmull-Rom spline

Parameters

_t:Number

Returns

Number

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Class CardinalSpline	Properties \| Methods \| Events

Package	com.degrafa.geometry.splines
Class	public class CardinalSpline
Inheritance	CardinalSpline BasicSpline Geometry DegrafaObject