D3DXQuaternionBaryCentric

Returns a quaternion in Barycentric coordinates.

D3DXQuaternionBaryCentric( _ 
    QOut As D3DQUATERNION, _ 
    Q1 As D3DQUATERNION, _ 
    Q2 As D3DQUATERNION, _ 
    Q3 As D3DQUATERNION, _ 
    f As Single, _ 
    g As Single)

Parameters

QOut

D3DQUATERNION type that is the result of the operation, a quaternion in Barycentric coordinates.

Q1

A source D3DQUATERNION type.

Q2

A source D3DQUATERNION type.

Q3

A source D3DQUATERNION type.

f

Weighting factor. See Remarks.

g

Weighting factor. See Remarks.

Error Codes

If the function fails, an error is raised and Err.Number can be set to one of the following values.

For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.

Remarks

To compute the Barycentric coordinates, the D3DXQuaternionBaryCentric function implements the following series of spherical linear interpolation operations: Slerp(Slerp(Q1, Q2, f+g), Slerp(Q1, Q3, f+g), g/(f+g))