# Compare faces

> 7.0

Function to compare the faces of two groups of `A3DRiBrepModel`.

> `A3DCompareFaces()`

> `A3DCompareFacesInBrepModels()`

Parameters

> pInput: pointer to a `A3DCompareInputData`that contains input data.

> pOutput: pointer to a `A3DCompareOutputData`that contains returned data. It has to be freed by calling again `A3DCompareFaces()`with NULL as input structure pointer.

Returns

> `A3D_SUCCESS`on success, or an error code on failure

Structures

- `A3DCompareInputData`
- `A3DCompareOutputData`

Functions

- `A3DCompareFaces()`
- `A3DCompareFacesInBrepModels()`

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