Method zoomIn

modules/core/MapSystem.js:812–812

()

  _zoomOut(delta) { return this.setMapParams(undefined, ~~this.zoom() - delta, undefined, 250); }

  zoomIn()        { return this._zoomIn(1); }
  zoomInFurther() { return this._zoomIn(4); }
  canZoomIn()     { return this.zoom() < MAX_Z; }