Package | flash.display |

Class | public final class TriangleCulling |

Inheritance | TriangleCulling Object |

Language version: | ActionScript 3.0 |

Runtime version: | 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.

See also

flash.display.Graphics.drawTriangles()

flash.display.GraphicsTrianglePath

Introduction to 3D Vectors

3D Backface Culling

flash.display.GraphicsTrianglePath

Introduction to 3D Vectors

3D Backface Culling

Public Properties

Public Methods

Public Constants

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.

Wed Sep 28 2022, 6:12 PM GMT+01:00