Multiply the components of this Vector2d by the given scalar values and store the result in <code>this</code>.
@param x the x component to multiply this vector by @param y the y component to multiply this vector by @return this
See Implementation
Multiply the components of this Vector2d by the given scalar values and store the result in <code>this</code>.
@param x the x component to multiply this vector by @param y the y component to multiply this vector by @return this