| Package | flash.display |
| Class | public final class TriangleCulling |
| Inheritance | TriangleCulling  Object |
| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
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.
Learn more
Related API Elements
Hide Inherited Public Properties
Show Inherited Public Properties
| 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 | ||
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.
Thu Dec 6 2018, 01:12 PM -08:00