flash.display.TriangleCulling (ActionScript 3.0)

Package	flash.display
Class	public final class TriangleCulling
Inheritance	TriangleCulling Object

Language version:

ActionScript 3.0

Runtime version:

AIR 1.5

Defines codes for culling algorithms that determine which triangles not to render when drawing triangle paths.

The terms POSITIVE and NEGATIVE refer to the sign of a triangle's normal along the z-axis. The normal is a 3D vector that is perpendicular to the surface of the triangle.

A triangle whose vertices 0, 1, and 2 are arranged in a clockwise order has a positive normal value. That is, its normal points in a positive z-axis direction, away from the current view point. When the TriangleCulling.POSITIVE algorithm is used, triangles with positive normals are not rendered. Another term for this is backface culling.

A triangle whose vertices are arranged in a counter-clockwise order has a negative normal value. That is, its normal points in a negative z-axis direction, toward the current view point. When the TriangleCulling.NEGATIVE algorithm is used, triangles with negative normals will not be rendered.

	Property	Defined by
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object

Public Methods

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	Method		Defined by
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

	Constant	Defined by
		NEGATIVE : String = "negative" [static] Specifies culling of all triangles facing toward the current view point.	TriangleCulling
		NONE : String = "none" [static] Specifies no culling.	TriangleCulling
		POSITIVE : String = "positive" [static] Specifies culling of all triangles facing away from the current view point.	TriangleCulling

Constant detail

NEGATIVE

constant

public static const NEGATIVE:String = "negative"

Specifies culling of all triangles facing toward the current view point.

NONE

constant

public static const NONE:String = "none"

Specifies no culling. All triangles in the path are rendered.

POSITIVE

constant

public static const POSITIVE:String = "positive"

Specifies culling of all triangles facing away from the current view point. This is also known as backface culling.

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Class TriangleCulling	Properties \| Methods \| Constants