Back-facing Styles

Labels

ASCII
BackfacingStyle
Binary
bckf ( = 0x62636B66 )

Back-facing styles

Both                0x00000000
Culled              0x00000001
Flipped             0x00000002

Constant descriptions

Both
A renderer should draw shapes that face toward and away from the camera. If a shape has only front-facing attributes, those attributes are used for both sides of the shape.
Culled
A renderer should not draw shapes that face away from the camera (this is not the same as hidden surface removal).
Flipped
A renderer should draw shapes that face toward and away from the camera. If a shape has only front-facing attributes, those attributes are used for both sides of the shape, but the normals of back-facing shapes are inverted, so that they face toward the camera.

Data Format

BackfacingEnum                  backfacing
backfacing
The value in this field must be one of the three constants defined above.

Description

A scene's back-facing style determines whether or not a renderer draws shapes that face away from a scene's camera. This style object defines some of the characteristics of a renderer and generally applies to all of the objects in a model.

Parent Hierarchy

Shared, shape, style.

Parent Objects

None.

Child Objects

None.

Example

BeginGroup ( OrderedDisplayGroup ( ) )
    Matrix ( ... )
    BackfacingStyle ( Both )
    Mesh ( ... )
    Mesh ( ... )
EndGroup ( )
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