| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.lucene.spatial3d.geom; |
| |
| /** |
| * Base extended areaShape object. |
| * |
| * @lucene.internal |
| */ |
| abstract class GeoBaseAreaShape extends GeoBaseMembershipShape implements GeoAreaShape { |
| |
| /** Constructor. |
| *@param planetModel is the planet model to use. |
| */ |
| public GeoBaseAreaShape(final PlanetModel planetModel) { |
| super(planetModel); |
| } |
| |
| /** All edgepoints inside shape */ |
| protected final static int ALL_INSIDE = 0; |
| /** Some edgepoints inside shape */ |
| protected final static int SOME_INSIDE = 1; |
| /** No edgepoints inside shape */ |
| protected final static int NONE_INSIDE = 2; |
| |
| /** Determine the relationship between the GeoAreShape and the |
| * shape's edgepoints. |
| *@param geoShape is the shape. |
| *@return the relationship. |
| */ |
| protected int isShapeInsideGeoAreaShape(final GeoShape geoShape) { |
| boolean foundOutside = false; |
| boolean foundInside = false; |
| for (GeoPoint p : geoShape.getEdgePoints()) { |
| if (isWithin(p)) { |
| foundInside = true; |
| } else { |
| foundOutside = true; |
| } |
| if (foundInside && foundOutside) { |
| return SOME_INSIDE; |
| } |
| } |
| if (!foundInside && !foundOutside) |
| return NONE_INSIDE; |
| if (foundInside && !foundOutside) |
| return ALL_INSIDE; |
| if (foundOutside && !foundInside) |
| return NONE_INSIDE; |
| return SOME_INSIDE; |
| } |
| |
| /** Determine the relationship between the GeoAreaShape's edgepoints and the |
| * provided shape. |
| *@param geoshape is the shape. |
| *@return the relationship. |
| */ |
| protected int isGeoAreaShapeInsideShape(final GeoShape geoshape) { |
| boolean foundOutside = false; |
| boolean foundInside = false; |
| for (GeoPoint p : getEdgePoints()) { |
| if (geoshape.isWithin(p)) { |
| foundInside = true; |
| } else { |
| foundOutside = true; |
| } |
| if (foundInside && foundOutside) { |
| return SOME_INSIDE; |
| } |
| } |
| if (!foundInside && !foundOutside) |
| return NONE_INSIDE; |
| if (foundInside && !foundOutside) |
| return ALL_INSIDE; |
| if (foundOutside && !foundInside) |
| return NONE_INSIDE; |
| return SOME_INSIDE; |
| } |
| |
| @Override |
| public int getRelationship(GeoShape geoShape) { |
| if (!geoShape.getPlanetModel().equals(planetModel)) { |
| throw new IllegalArgumentException("Cannot relate shapes with different planet models."); |
| } |
| final int insideGeoAreaShape = isShapeInsideGeoAreaShape(geoShape); |
| if (insideGeoAreaShape == SOME_INSIDE) { |
| return GeoArea.OVERLAPS; |
| } |
| |
| final int insideShape = isGeoAreaShapeInsideShape(geoShape); |
| if (insideShape == SOME_INSIDE) { |
| return GeoArea.OVERLAPS; |
| } |
| |
| if (insideGeoAreaShape == ALL_INSIDE && insideShape==ALL_INSIDE) { |
| return GeoArea.OVERLAPS; |
| } |
| |
| if (intersects(geoShape)){ |
| return GeoArea.OVERLAPS; |
| } |
| |
| if (insideGeoAreaShape == ALL_INSIDE) { |
| return GeoArea.WITHIN; |
| } |
| |
| if (insideShape==ALL_INSIDE) { |
| return GeoArea.CONTAINS; |
| } |
| |
| return GeoArea.DISJOINT; |
| } |
| } |