enum flash.display.TriangleCulling

Available on all platforms

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.

Constructors

NEGATIVE

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

NONE

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

POSITIVE

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