Angular OpenLayers - Zoom to box with bounds -

i tried figure out how zoom map box bounds couldn't find example. tried

angular.extend($scope, {         offset: 0,         center: {             lat: 30.0047,             lon: 31.2586,             bounds: [30.566461328125,                      29.766565657014183,                      31.950738671875005,                      30.242264176913594]         }     }); 

how can set themap zoom bounding box without complicate conversion of 4 bounds (center, zoom)?

i'm pretty sure want

map.getview().fit(      ol.proj.transformextent([ x1, y1, x2, y2 ], 'epsg:coords', 'epsg:map'),     map.getsize()     ); 

this after map exists, not on initialization.

http://openlayers.org/en/master/apidoc/ol.view.html#fit