HTML5-Canvas点击泡沫横飞特效

代码片段：

 function Particles() {
      this.render = bind(this.render, this);
      this.rotateRadians = bind(this.rotateRadians, this);
      this.random = bind(this.random, this);
      this.mouseMove = bind(this.mouseMove, this);
      this.mouseDown = bind(this.mouseDown, this);
      this.resize = bind(this.resize, this);
      this.animate = bind(this.animate, this);
      this.setStage = bind(this.setStage, this);
      this.setLighting = bind(this.setLighting, this);
      this.getTexture = bind(this.getTexture, this);
      this.addStars = bind(this.addStars, this);
      this.setActors = bind(this.setActors, this);
      this.getPastelColor = bind(this.getPastelColor, this);
      this.canvasMouse = {
        x: 0,