Method pointerdown

resources/vega.min.js:14401–14403

(t)

      this.fire(wv, t);
    }
    pointerdown(t) {
      ((this._down = this._active), this.fire(dv, t));
    }
    mousedown(t) {
      ((this._down = this._active), this.fire(yv, t));
    }