code: public final void setRect(double xMin, double xMax, double yMin, double yMax)
      {
          this.xMin = xMin;
          this.xMax = xMax;
          this.yMin = yMin;
          this.yMax = yMax;
      }
docs: Sets the visible rectangle of translated coordinates.
  @param xMin
  @param xMax
  @param yMin
  @param yMax