この回転の逆回転を求めて置き換えます。
SIRotation.InvertInPlace();
dim r1, rotAngles ' Create rotation. set r1 = XSIMath.CreateRotation ' Create 3D vector. set rotAngles = XSIMath.CreateVector3(0.0, 1.5, 0.0) r1.SetFromXYZAngles rotAngles r1.InvertInPlace
SIRotation.Invert SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion