# Bitmasks for Behavior of Normals

Bitmasks used to set and access the `A3DTessFaceData::m_usUsedEntitiesFlags`.

> 2.0

If this flag is set, the corresponding OneNormal entity (see Bitmasks for Specifying Tessellation Types) is planar and only one normal is defined for the entity. Otherwise, one normal per point is defined.

## Index

Preprocessor Definitions

- `kA3DTessFaceDataNormalSingle`
- `kA3DTessFaceDataNormalMask`

Preprocessor Definitions

`kA3DTessFaceDataNormalSingle`

  Bit indicating normal behavior for OneNormalentities.

`kA3DTessFaceDataNormalMask`

  Access to real value of number of entities.

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