setFromMatrixScale( m ) {

		const sx = this.setFromMatrixColumn( m, 0 ).length();
		const sy = this.setFromMatrixColumn( m, 1 ).length();
		const sz = this.setFromMatrixColumn( m, 2 ).length();

		this.x = sx;
		this.y = sy;
		this.z = sz;

		return this;

	}
Sets the vector components to the scale elements of the
given transformation matrix.

@param {Matrix4} m - The 4x4 matrix.
@return {Vector3} A reference to this vector.