Java Code Examples for com.esri.core.geometry.Geometry#isEmpty()
The following examples show how to use
com.esri.core.geometry.Geometry#isEmpty() .
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Example 1
Source File: OGCConcreteGeometryCollection.java From geometry-api-java with Apache License 2.0 | 6 votes |
private GeometryCursor removeOverlapsHelper_(List<Geometry> geoms) { List<Geometry> result = new ArrayList<Geometry>(); for (int i = 0; i < geoms.size(); ++i) { Geometry current = geoms.get(i); if (current.isEmpty()) continue; for (int j = i + 1; j < geoms.size(); ++j) { Geometry subG = geoms.get(j); current = OperatorDifference.local().execute(current, subG, esriSR, null); if (current.isEmpty()) break; } if (current.isEmpty()) continue; result.add(current); } return new SimpleGeometryCursor(result); }
Example 2
Source File: GeometrySerde.java From presto with Apache License 2.0 | 5 votes |
private static OGCGeometry createFromEsriGeometry(Geometry geometry, boolean multiType) { Geometry.Type type = geometry.getType(); switch (type) { case Polygon: { if (!multiType && ((Polygon) geometry).getExteriorRingCount() <= 1) { return new OGCPolygon((Polygon) geometry, null); } return new OGCMultiPolygon((Polygon) geometry, null); } case Polyline: { if (!multiType && ((Polyline) geometry).getPathCount() <= 1) { return new OGCLineString((Polyline) geometry, 0, null); } return new OGCMultiLineString((Polyline) geometry, null); } case MultiPoint: { if (!multiType && ((MultiPoint) geometry).getPointCount() <= 1) { if (geometry.isEmpty()) { return new OGCPoint(new Point(), null); } return new OGCPoint(((MultiPoint) geometry).getPoint(0), null); } return new OGCMultiPoint((MultiPoint) geometry, null); } case Point: { if (!multiType) { return new OGCPoint((Point) geometry, null); } return new OGCMultiPoint((Point) geometry, null); } case Envelope: { Polygon polygon = new Polygon(); polygon.addEnvelope((Envelope) geometry, false); return new OGCPolygon(polygon, null); } default: throw new IllegalArgumentException("Unexpected geometry type: " + type); } }
Example 3
Source File: OGCConcreteGeometryCollection.java From geometry-api-java with Apache License 2.0 | 5 votes |
@Override public OGCGeometry difference(OGCGeometry another) { if (isEmpty() || another.isEmpty()) { return this; } List<Geometry> geometries = toList(prepare_for_ops_(toGeometryCollection(this))); List<Geometry> otherGeometries = toList(prepare_for_ops_(toGeometryCollection(another))); List<OGCGeometry> result = new ArrayList<OGCGeometry>(); for (Geometry geometry : geometries) { for (Geometry otherGeometry : otherGeometries) { if (geometry.getDimension() > otherGeometry.getDimension()) { continue; //subtracting lower dimension has no effect. } geometry = OperatorDifference.local().execute(geometry, otherGeometry, esriSR, null); if (geometry.isEmpty()) { break; } } if (!geometry.isEmpty()) { result.add(OGCGeometry.createFromEsriGeometry(geometry, esriSR)); } } if (result.size() == 1) { return result.get(0).reduceFromMulti(); } return new OGCConcreteGeometryCollection(result, esriSR).flattenAndRemoveOverlaps(); }
Example 4
Source File: OGCConcreteGeometryCollection.java From geometry-api-java with Apache License 2.0 | 4 votes |
@Override public OGCGeometry convexHull() { GeometryCursor cursor = OperatorConvexHull.local().execute( getEsriGeometryCursor(), false, null); MultiPoint mp = new MultiPoint(); Polygon polygon = new Polygon(); VertexDescription vd = null; for (Geometry geom = cursor.next(); geom != null; geom = cursor.next()) { vd = geom.getDescription(); if (geom.isEmpty()) continue; if (geom.getType() == Geometry.Type.Polygon) { polygon.add((MultiPath) geom, false); } else if (geom.getType() == Geometry.Type.Polyline) { mp.add((MultiVertexGeometry) geom, 0, -1); } else if (geom.getType() == Geometry.Type.Point) { mp.add((Point) geom); } else { throw new GeometryException("internal error"); } } Geometry resultGeom = null; if (!mp.isEmpty()) { resultGeom = OperatorConvexHull.local().execute(mp, null); } if (!polygon.isEmpty()) { if (resultGeom != null && !resultGeom.isEmpty()) { Geometry[] geoms = { resultGeom, polygon }; resultGeom = OperatorConvexHull.local().execute( new SimpleGeometryCursor(geoms), true, null).next(); } else { resultGeom = OperatorConvexHull.local().execute(polygon, null); } } if (resultGeom == null) { Point pt = new Point(); if (vd != null) pt.assignVertexDescription(vd); return new OGCPoint(pt, getEsriSpatialReference()); } return OGCGeometry.createFromEsriGeometry(resultGeom, getEsriSpatialReference(), false); }
Example 5
Source File: OGCGeometry.java From geometry-api-java with Apache License 2.0 | 4 votes |
public static OGCGeometry createFromEsriGeometry(Geometry geom, SpatialReference sr, boolean multiType) { if (geom == null) return null; Geometry.Type t = geom.getType(); if (t == Geometry.Type.Polygon) { if (!multiType && ((Polygon) geom).getExteriorRingCount() == 1) return new OGCPolygon((Polygon) geom, sr); else return new OGCMultiPolygon((Polygon) geom, sr); } if (t == Geometry.Type.Polyline) { if (!multiType && ((Polyline) geom).getPathCount() == 1) return new OGCLineString((Polyline) geom, 0, sr); else return new OGCMultiLineString((Polyline) geom, sr); } if (t == Geometry.Type.MultiPoint) { if (!multiType && ((MultiPoint) geom).getPointCount() <= 1) { if (geom.isEmpty()) return new OGCPoint(new Point(), sr); else return new OGCPoint(((MultiPoint) geom).getPoint(0), sr); } else return new OGCMultiPoint((MultiPoint) geom, sr); } if (t == Geometry.Type.Point) { if (!multiType) { return new OGCPoint((Point) geom, sr); } else { return new OGCMultiPoint((Point) geom, sr); } } if (t == Geometry.Type.Envelope) { Polygon p = new Polygon(); p.addEnvelope((Envelope) geom, false); return createFromEsriGeometry(p, sr, multiType); } throw new UnsupportedOperationException(); }