# Topology Body Data

Structure and bitmasks for establishing the bounding box orientation and context of any type of `A3DTopoBody`entity.

> 2.0

> `A3DTopoBodyData`, `A3DTopoBodyGet()`, `A3DTopoBodySet()`

## Index

Preprocessor Definitions

- `kA3DBodyBoundingBoxEvaluation`
- `kA3DBodyBoundingBoxPrecise`
- `kA3DBodyBoundingBoxCadData`

Structures

- `A3DTopoBodyData`

Preprocessor Definitions

`kA3DBodyBoundingBoxEvaluation`

  The bounding box has been roughly evaluated from geometrical entities included in the body.

`kA3DBodyBoundingBoxPrecise`

  The bounding box has been deduced from a complete tessellation of the body.

`kA3DBodyBoundingBoxCadData`

  The bounding box has been read from the originating CAD file.

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