function SunLight(options) {
  options = options ?? Frozen.EMPTY_OBJECT;
  /**
   * The color of the light.
   * @type {Color}
   * @default Color.WHITE
   */
  this.color = Color.clone(options.color ?? Color.WHITE);

  /**
   * The intensity of the light.
   * @type {number}
   * @default 2.0
   */
  this.intensity = options.intensity ?? 2.0;
}
A directional light source that originates from the Sun.

@param {object} [options] Object with the following properties:
@param {Color} [options.color=Color.WHITE] The light's color.
@param {number} [options.intensity=2.0] The light's intensity.

@alias SunLight
@constructor