code: public void scale(double scale) {
  		this.m00 *= scale;
  		this.m11 *= scale;
  		this.m01 *= scale;
  		this.m10 *= scale;
  	}
docs: Concatenates this transform with a scaling transformation.
  
  <p>This function is equivalent to:
  <pre>
  this = this *  [   s    0    0   ]
  [   0    s    0   ]
  [   0    0    1   ]
  </pre>
  
  @param scale the scaling factor.