Negates this vector: this = - this
SIVector3.NegateInPlace();
dim v1 ' Create 3D vectors. set v1 = XSIMath.CreateVector3(1.0, 2.0, 3.0) v1.Set 1.0, 2.0, 3.0 'v1 = -v1 v1.NegateInPlace
SIVector3.Negate SIVector3 SIMatrix3 SIMatrix4 SIRotation SITransformation SIQuaternion