Function _sAssign

src/image/loading_displaying.js:837–843

* Validates clipping params. Per drawImage spec sWidth and sHight cannot be * negative or greater than image intrinsic width and height * @private * @param {Number} sVal * @param {Number} iVal * @returns {Number} * @private

(sVal, iVal)

   * @private
   */
  function _sAssign(sVal, iVal) {
    if (sVal > 0 && sVal < iVal) {
      return sVal;
    } else {
      return iVal;
    }
  }

  /**
   * Draws an image to the canvas.