onPinchStart method

dynamic onPinchStart()

Implementation

onPinchStart() {
  if (this.enabled && this.enableZoom) {
    this.dispatchEvent(_startEvent);
    this.updateTbState(STATE2.SCALE, true);

    this._startFingerDistance = this.calculatePointersDistance(
        this._touchCurrent[0], this._touchCurrent[1]);
    this._currentFingerDistance = this._startFingerDistance;

    this.activateGizmos(false);
  }
}