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);
}
}