Method setAlpha

src/color/p5.Color.js:708–718

* Sets the alpha (transparency) value of a color. * * The range depends on the * colorMode() . In the default RGB mode it's * between 0 and 255. * * @param {Number} alpha the new alpha value. * * @example * function setup() { * createCanvas

(new_alpha, max=[0, 1])

   * }
   */
  setAlpha(new_alpha, max=[0, 1]) {
    this._defaultStringValue = undefined;
    if(!Array.isArray(max)){
      max = [0, max];
    }

    const colorjsMax = Color.#colorjsMaxes[this.mode][3];
    const newval = map(new_alpha, max[0], max[1], colorjsMax[0], colorjsMax[1]);

    this._color.alpha = newval;
  }

  _getRGBA(maxes=[1, 1, 1, 1]) {
    // Get colorjs maxes