get3DFaceNormal

Returns a normal vector for a face in the underlying 3d mesh.

void get3DFaceNormal(tSigned32 faceIndex, float& resultX, float& resultY, float& resultZ) const;

	faceIndex		The index of the 3d face to return the normal for.
	resultX		Returns the X coordinate of the normal.
	resultY		Returns the Y coordinate of the normal.
	resultZ		Returns the Y coordinate of the normal.

Use iMesh::get3DFaceAtPosition() to obtain a 3D face index.

The returned vector is unit length and points in a direction up from the ground.