| /* |
| * 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; |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.IOException; |
| |
| /** |
| * Bounding box wider than PI but limited on left and right sides ( |
| * left lon, right lon). |
| * |
| * @lucene.internal |
| */ |
| class GeoWideLongitudeSlice extends GeoBaseBBox { |
| /** The left longitude */ |
| protected final double leftLon; |
| /** The right longitude */ |
| protected final double rightLon; |
| |
| /** The left plane */ |
| protected final SidedPlane leftPlane; |
| /** The right plane */ |
| protected final SidedPlane rightPlane; |
| |
| /** Notable points for the shape */ |
| protected final GeoPoint[] planePoints; |
| |
| /** Center point for the shape */ |
| protected final GeoPoint centerPoint; |
| |
| /** A point on the edge of the shape */ |
| protected final GeoPoint[] edgePoints; |
| |
| /** |
| * Accepts only values in the following ranges: lon: {@code -PI -> PI}. |
| * Horizantal angle must be greater than or equal to PI. |
| *@param planetModel is the planet model. |
| *@param leftLon is the left longitude. |
| *@param rightLon is the right longitude. |
| */ |
| public GeoWideLongitudeSlice(final PlanetModel planetModel, final double leftLon, double rightLon) { |
| super(planetModel); |
| // Argument checking |
| if (leftLon < -Math.PI || leftLon > Math.PI) |
| throw new IllegalArgumentException("Left longitude out of range"); |
| if (rightLon < -Math.PI || rightLon > Math.PI) |
| throw new IllegalArgumentException("Right longitude out of range"); |
| double extent = rightLon - leftLon; |
| if (extent < 0.0) { |
| extent += 2.0 * Math.PI; |
| } |
| if (extent < Math.PI) |
| throw new IllegalArgumentException("Width of rectangle too small"); |
| |
| this.leftLon = leftLon; |
| this.rightLon = rightLon; |
| |
| final double sinLeftLon = Math.sin(leftLon); |
| final double cosLeftLon = Math.cos(leftLon); |
| final double sinRightLon = Math.sin(rightLon); |
| final double cosRightLon = Math.cos(rightLon); |
| |
| // Normalize |
| while (leftLon > rightLon) { |
| rightLon += Math.PI * 2.0; |
| } |
| double middleLon = (leftLon + rightLon) * 0.5; |
| while (middleLon > Math.PI) { |
| middleLon -= Math.PI * 2.0; |
| } |
| while (middleLon < -Math.PI) { |
| middleLon += Math.PI * 2.0; |
| } |
| this.centerPoint = new GeoPoint(planetModel, 0.0, middleLon); |
| |
| this.leftPlane = new SidedPlane(centerPoint, cosLeftLon, sinLeftLon); |
| this.rightPlane = new SidedPlane(centerPoint, cosRightLon, sinRightLon); |
| |
| this.planePoints = new GeoPoint[]{planetModel.NORTH_POLE, planetModel.SOUTH_POLE}; |
| this.edgePoints = new GeoPoint[]{planetModel.NORTH_POLE}; |
| } |
| |
| /** |
| * Constructor for deserialization. |
| * @param planetModel is the planet model. |
| * @param inputStream is the input stream. |
| */ |
| public GeoWideLongitudeSlice(final PlanetModel planetModel, final InputStream inputStream) throws IOException { |
| this(planetModel, SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream)); |
| } |
| |
| @Override |
| public void write(final OutputStream outputStream) throws IOException { |
| SerializableObject.writeDouble(outputStream, leftLon); |
| SerializableObject.writeDouble(outputStream, rightLon); |
| } |
| |
| @Override |
| public GeoBBox expand(final double angle) { |
| // Figuring out when we escalate to a special case requires some prefiguring |
| double currentLonSpan = rightLon - leftLon; |
| if (currentLonSpan < 0.0) |
| currentLonSpan += Math.PI * 2.0; |
| double newLeftLon = leftLon - angle; |
| double newRightLon = rightLon + angle; |
| if (currentLonSpan + 2.0 * angle >= Math.PI * 2.0) { |
| newLeftLon = -Math.PI; |
| newRightLon = Math.PI; |
| } |
| return GeoBBoxFactory.makeGeoBBox(planetModel, Math.PI * 0.5, -Math.PI * 0.5, newLeftLon, newRightLon); |
| } |
| |
| @Override |
| public boolean isWithin(final double x, final double y, final double z) { |
| return leftPlane.isWithin(x, y, z) || |
| rightPlane.isWithin(x, y, z); |
| } |
| |
| @Override |
| public double getRadius() { |
| // Compute the extent and divide by two |
| double extent = rightLon - leftLon; |
| if (extent < 0.0) |
| extent += Math.PI * 2.0; |
| return Math.max(Math.PI * 0.5, extent * 0.5); |
| } |
| |
| @Override |
| public GeoPoint getCenter() { |
| return centerPoint; |
| } |
| |
| @Override |
| public GeoPoint[] getEdgePoints() { |
| return edgePoints; |
| } |
| |
| @Override |
| public boolean intersects(final Plane p, final GeoPoint[] notablePoints, final Membership... bounds) { |
| // Right and left bounds are essentially independent hemispheres; crossing into the wrong part of one |
| // requires crossing into the right part of the other. So intersection can ignore the left/right bounds. |
| return p.intersects(planetModel, leftPlane, notablePoints, planePoints, bounds) || |
| p.intersects(planetModel, rightPlane, notablePoints, planePoints, bounds); |
| } |
| |
| @Override |
| public boolean intersects(final GeoShape geoShape) { |
| // Right and left bounds are essentially independent hemispheres; crossing into the wrong part of one |
| // requires crossing into the right part of the other. So intersection can ignore the left/right bounds. |
| return geoShape.intersects(leftPlane, planePoints) || |
| geoShape.intersects(rightPlane, planePoints); |
| } |
| |
| @Override |
| public void getBounds(Bounds bounds) { |
| super.getBounds(bounds); |
| bounds.isWide() |
| .addVerticalPlane(planetModel, leftLon, leftPlane) |
| .addVerticalPlane(planetModel, rightLon, rightPlane) |
| .addIntersection(planetModel, leftPlane, rightPlane) |
| .addPoint(planetModel.NORTH_POLE) |
| .addPoint(planetModel.SOUTH_POLE); |
| } |
| |
| @Override |
| protected double outsideDistance(final DistanceStyle distanceStyle, final double x, final double y, final double z) { |
| // Because the rectangle exceeds 180 degrees, it is safe to compute the horizontally |
| // unbounded distance to both the left and the right and only take the minimum of the two. |
| final double leftDistance = distanceStyle.computeDistance(planetModel, leftPlane, x,y,z); |
| final double rightDistance = distanceStyle.computeDistance(planetModel, rightPlane, x,y,z); |
| |
| final double northDistance = distanceStyle.computeDistance(planetModel.NORTH_POLE, x,y,z); |
| final double southDistance = distanceStyle.computeDistance(planetModel.SOUTH_POLE, x,y,z); |
| |
| return Math.min( |
| Math.min(leftDistance, rightDistance), |
| Math.min(northDistance, southDistance)); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof GeoWideLongitudeSlice)) |
| return false; |
| GeoWideLongitudeSlice other = (GeoWideLongitudeSlice) o; |
| return super.equals(other) && other.leftLon == leftLon && other.rightLon == rightLon; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| long temp = Double.doubleToLongBits(leftLon); |
| result = 31 * result + (int) (temp ^ (temp >>> 32)); |
| temp = Double.doubleToLongBits(rightLon); |
| result = 31 * result + (int) (temp ^ (temp >>> 32)); |
| return result; |
| } |
| |
| @Override |
| public String toString() { |
| return "GeoWideLongitudeSlice: {planetmodel="+planetModel+", leftlon=" + leftLon + "(" + leftLon * 180.0 / Math.PI + "), rightlon=" + rightLon + "(" + rightLon * 180.0 / Math.PI + ")}"; |
| } |
| } |
| |