public Vector3d mul(double scalar, Vector3d dest) {
        dest.x = x * scalar;
        dest.y = y * scalar;
        dest.z = z * scalar;
        return dest;
    }
public Vector3d mul ( double scalar , Vector3d dest ) { dest . x = x * scalar ; dest . y = y * scalar ; dest . z = z * scalar ; return dest ; }
/* (non-Javadoc)
@see org.joml.Vector3dc#mul(double, org.joml.Vector3d)