public IEnumerator BuildLayer(VectorTileLayer layerData, GOLayer layer, bool delayedLoad) { GameObject parent = null; if (transform.FindChild(layer.name) == null) { parent = new GameObject(); parent.name = layer.name; parent.transform.parent = this.transform; parent.SetActive(!layer.startInactive); } else { parent = transform.FindChild(layer.name).gameObject; } if (layerData.FeatureCount() == 0) { yield break; } List <GOFeature> stack = new List <GOFeature> (); for (int i = 0; i < layerData.FeatureCount(); i++) { //get the feature VectorTileFeature feature = layerData.GetFeature(i); GOFeature goFeature = ParseFeatureData(feature, layer); if (layer.useOnly.Length > 0 && !layer.useOnly.Contains(goFeature.kind)) { continue; } if (layer.avoid.Length > 0 && layer.avoid.Contains(goFeature.kind)) { continue; } if (layer.layerType == GOLayer.GOLayerType.Roads) { GORoadFeature grf = (GORoadFeature)goFeature; if ((grf.isBridge && !layer.useBridges) || (grf.isTunnel && !layer.useTunnels) || (grf.isLink && !layer.useBridges)) { continue; } } //multipart List <List <LatLng> > geomWgs84 = feature.GeometryAsWgs84((ulong)map.zoomLevel, (ulong)tileCoordinates.x, (ulong)tileCoordinates.y, 0); string type = feature.GetFeatureType(geomWgs84); if (type == null || feature.GeometryType == GeomType.POINT) { continue; } if (feature.GeometryType == GeomType.POLYGON && layer.layerType == GOLayer.GOLayerType.Roads) { continue; } if (type == "MultiLineString" || (type == "Polygon" && !layer.isPolygon)) { foreach (IList geometry in geomWgs84) { GOFeature gf = ParseFeatureData(feature, layer); gf.geometry = geometry; gf.type = type; gf.layer = layer; gf.parent = parent; gf.properties = feature.GetProperties(); gf.ConvertGeometries(); gf.ConvertAttributes(); gf.index = (Int64)i; gf.goFeatureType = GOFeature.GOFeatureType.MultiLine; stack.Add(gf); } } else if (type == "LineString") { GOFeature gf = ParseFeatureData(feature, layer); gf.geometry = geomWgs84 [0]; gf.type = type; gf.layer = layer; gf.parent = parent; gf.properties = feature.GetProperties(); gf.ConvertGeometries(); gf.ConvertAttributes(); gf.index = (Int64)i; gf.goFeatureType = GOFeature.GOFeatureType.Line; if (geomWgs84.Count == 0) { continue; } stack.Add(gf); } else if (type == "Polygon") { GOFeature gf = ParseFeatureData(feature, layer); gf.geometry = geomWgs84 [0]; gf.type = type; gf.layer = layer; gf.parent = parent; gf.properties = feature.GetProperties(); gf.ConvertGeometries(); gf.ConvertAttributes(); gf.index = (Int64)i; gf.goFeatureType = GOFeature.GOFeatureType.Polygon; stack.Add(gf); } else if (type == "MultiPolygon") { GameObject multi = new GameObject("MultiPolygon"); multi.transform.parent = parent.transform; IList subject = null; IList clips = new List <List <LatLng> >(); for (int j = 0; j < geomWgs84.Count; j++) //Clip ascending { IList p = geomWgs84 [j]; if (GOFeature.IsGeoPolygonClockwise(p)) { subject = p; } else { //Add clip clips.Add(p); } //Last one if (j == geomWgs84.Count - 1 || (j < geomWgs84.Count - 1 && GOFeature.IsGeoPolygonClockwise(geomWgs84 [j + 1]) && subject != null)) { GOFeature gf = ParseFeatureData(feature, layer); gf.geometry = subject; gf.clips = clips; gf.type = type; gf.layer = layer; gf.parent = parent; gf.properties = feature.GetProperties(); gf.ConvertGeometries(); gf.ConvertAttributes(); gf.index = (Int64)i; gf.goFeatureType = GOFeature.GOFeatureType.MultiPolygon; stack.Add(gf); subject = null; clips = new List <List <LatLng> >(); } } } } IList iStack = (IList)stack; if (layer.layerType == GOLayer.GOLayerType.Roads) { iStack = GORoadFeature.MergeRoads(iStack); } int n = 25; for (int i = 0; i < iStack.Count; i += n) { for (int k = 0; k < n; k++) { if (i + k >= iStack.Count) { yield return(null); break; } GOFeature r = (GOFeature)iStack [i + k]; IEnumerator routine = r.BuildFeature(this, delayedLoad); if (routine != null) { if (Application.isPlaying) { StartCoroutine(routine); } else { GORoutine.start(routine, this); } } } yield return(new WaitForSeconds(0.5f)); } Resources.UnloadUnusedAssets(); yield return(null); }