code: public void translate(double dx, double dy, double dz) {
  		this.m03 += dx;
  		this.m13 += dy;
  		this.m23 += dz;
  	}
docs: Translate the position.
  <p>
  This function is equivalent to:
  <pre>
  this = this *  [   0    0    0    dx   ]
  [   0    0    0    dy   ]
  [   0    0    0    dz   ]
  [   0    0    0    1    ]
  </pre>
  
  @param dx
  @param dy
  @param dz