lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/GeoDegenerateVerticalLine.java - lucene-solr - Git at Google

 /*
  * 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;

 /**
  * Degenerate bounding box limited on two sides (top lat, bottom lat).
  *
  * @lucene.internal
  */
 public class GeoDegenerateVerticalLine extends GeoBaseBBox {
   /** Top latitude of the vertical line */
   protected final double topLat;
   /** Bottom latitude of the vertical line */
   protected final double bottomLat;
   /** Longitude of the vertical line */
   protected final double longitude;

   /** Point at the upper end of the vertical line */
   protected final GeoPoint UHC;
   /** Point at the lower end of the vertical line */
   protected final GeoPoint LHC;

   /** Top end cutoff plane */
   protected final SidedPlane topPlane;
   /** Bottom end cutoff plane */
   protected final SidedPlane bottomPlane;
   /** Back-side cutoff plane */
   protected final SidedPlane boundingPlane;
   /** The vertical line plane */
   protected final Plane plane;
   /** Notable points for the line (end points) */
   protected final GeoPoint[] planePoints;
   /** A computed center point for the line */
   protected final GeoPoint centerPoint;
   /** A point that's on the line */
   protected final GeoPoint[] edgePoints;

   /**
    * Accepts only values in the following ranges: lat: {@code -PI/2 -> PI/2}, longitude: {@code -PI -> PI}
    */
   public GeoDegenerateVerticalLine(final PlanetModel planetModel, final double topLat, final double bottomLat, final double longitude) {
     super(planetModel);
     // Argument checking
     if (topLat > Math.PI * 0.5 || topLat < -Math.PI * 0.5)
       throw new IllegalArgumentException("Top latitude out of range");
     if (bottomLat > Math.PI * 0.5 || bottomLat < -Math.PI * 0.5)
       throw new IllegalArgumentException("Bottom latitude out of range");
     if (topLat < bottomLat)
       throw new IllegalArgumentException("Top latitude less than bottom latitude");
     if (longitude < -Math.PI || longitude > Math.PI)
       throw new IllegalArgumentException("Longitude out of range");

     this.topLat = topLat;
     this.bottomLat = bottomLat;
     this.longitude = longitude;

     final double sinTopLat = Math.sin(topLat);
     final double cosTopLat = Math.cos(topLat);
     final double sinBottomLat = Math.sin(bottomLat);
     final double cosBottomLat = Math.cos(bottomLat);
     final double sinLongitude = Math.sin(longitude);
     final double cosLongitude = Math.cos(longitude);

     // Now build the two points
     this.UHC = new GeoPoint(planetModel, sinTopLat, sinLongitude, cosTopLat, cosLongitude, topLat, longitude);
     this.LHC = new GeoPoint(planetModel, sinBottomLat, sinLongitude, cosBottomLat, cosLongitude, bottomLat, longitude);

     this.plane = new Plane(cosLongitude, sinLongitude);

     final double middleLat = (topLat + bottomLat) * 0.5;
     final double sinMiddleLat = Math.sin(middleLat);
     final double cosMiddleLat = Math.cos(middleLat);

     this.centerPoint = new GeoPoint(planetModel, sinMiddleLat, sinLongitude, cosMiddleLat, cosLongitude);

     this.topPlane = new SidedPlane(centerPoint, planetModel, sinTopLat);
     this.bottomPlane = new SidedPlane(centerPoint, planetModel, sinBottomLat);

     this.boundingPlane = new SidedPlane(centerPoint, -sinLongitude, cosLongitude);

     this.planePoints = new GeoPoint[]{UHC, LHC};

     this.edgePoints = new GeoPoint[]{centerPoint};
   }

   /**
    * Constructor for deserialization.
    * @param planetModel is the planet model.
    * @param inputStream is the input stream.
    */
   public GeoDegenerateVerticalLine(final PlanetModel planetModel, final InputStream inputStream) throws IOException {
     this(planetModel, SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream));
   }

   @Override
   public void write(final OutputStream outputStream) throws IOException {
     SerializableObject.writeDouble(outputStream, topLat);
     SerializableObject.writeDouble(outputStream, bottomLat);
     SerializableObject.writeDouble(outputStream, longitude);
   }

   @Override
   public GeoBBox expand(final double angle) {
     final double newTopLat = topLat + angle;
     final double newBottomLat = bottomLat - angle;
     double newLeftLon = longitude - angle;
     double newRightLon = longitude + angle;
     double currentLonSpan = 2.0 * angle;
     if (currentLonSpan + 2.0 * angle >= Math.PI * 2.0) {
       newLeftLon = -Math.PI;
       newRightLon = Math.PI;
     }
     return GeoBBoxFactory.makeGeoBBox(planetModel, newTopLat, newBottomLat, newLeftLon, newRightLon);
   }

   @Override
   public boolean isWithin(final double x, final double y, final double z) {
     return plane.evaluateIsZero(x, y, z) &&
         boundingPlane.isWithin(x, y, z) &&
         topPlane.isWithin(x, y, z) &&
         bottomPlane.isWithin(x, y, z);
   }

   @Override
   public double getRadius() {
     // Here we compute the distance from the middle point to one of the corners.  However, we need to be careful
     // to use the longest of three distances: the distance to a corner on the top; the distnace to a corner on the bottom, and
     // the distance to the right or left edge from the center.
     final double topAngle = centerPoint.arcDistance(UHC);
     final double bottomAngle = centerPoint.arcDistance(LHC);
     return Math.max(topAngle, bottomAngle);
   }

   @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) {
     return p.intersects(planetModel, plane, notablePoints, planePoints, bounds, boundingPlane, topPlane, bottomPlane);
   }

   @Override
   public boolean intersects(final GeoShape geoShape) {
     return geoShape.intersects(plane, planePoints, boundingPlane, topPlane, bottomPlane);
   }

   @Override
   public void getBounds(Bounds bounds) {
     super.getBounds(bounds);
     bounds.addVerticalPlane(planetModel, longitude, plane, boundingPlane, topPlane, bottomPlane)
       .addPoint(UHC).addPoint(LHC);
   }

   @Override
   public int getRelationship(final GeoShape path) {
     //System.err.println(this+" relationship to "+path);
     if (intersects(path)) {
       //System.err.println(" overlaps");
       return OVERLAPS;
     }

     if (path.isWithin(centerPoint)) {
       //System.err.println(" contains");
       return CONTAINS;
     }

     //System.err.println(" disjoint");
     return DISJOINT;
   }

   @Override
   protected double outsideDistance(final DistanceStyle distanceStyle, final double x, final double y, final double z) {
     final double distance = distanceStyle.computeDistance(planetModel, plane, x,y,z, topPlane, bottomPlane, boundingPlane);

     final double UHCDistance = distanceStyle.computeDistance(UHC, x,y,z);
     final double LHCDistance = distanceStyle.computeDistance(LHC, x,y,z);

     return Math.min(
       distance,
       Math.min(UHCDistance, LHCDistance));
   }

   @Override
   public boolean equals(Object o) {
     if (!(o instanceof GeoDegenerateVerticalLine))
       return false;
     GeoDegenerateVerticalLine other = (GeoDegenerateVerticalLine) o;
     return super.equals(other) && other.UHC.equals(UHC) && other.LHC.equals(LHC);
   }

   @Override
   public int hashCode() {
     int result = super.hashCode();
     result = 31 * result + UHC.hashCode();
     result = 31 * result + LHC.hashCode();
     return result;
   }

   @Override
   public String toString() {
     return "GeoDegenerateVerticalLine: {longitude=" + longitude + "(" + longitude * 180.0 / Math.PI + "), toplat=" + topLat + "(" + topLat * 180.0 / Math.PI + "), bottomlat=" + bottomLat + "(" + bottomLat * 180.0 / Math.PI + ")}";
   }
 }
	/*
	* 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;

	/**
	* Degenerate bounding box limited on two sides (top lat, bottom lat).
	*
	* @lucene.internal
	*/
	public class GeoDegenerateVerticalLine extends GeoBaseBBox {
	/** Top latitude of the vertical line */
	protected final double topLat;
	/** Bottom latitude of the vertical line */
	protected final double bottomLat;
	/** Longitude of the vertical line */
	protected final double longitude;

	/** Point at the upper end of the vertical line */
	protected final GeoPoint UHC;
	/** Point at the lower end of the vertical line */
	protected final GeoPoint LHC;

	/** Top end cutoff plane */
	protected final SidedPlane topPlane;
	/** Bottom end cutoff plane */
	protected final SidedPlane bottomPlane;
	/** Back-side cutoff plane */
	protected final SidedPlane boundingPlane;
	/** The vertical line plane */
	protected final Plane plane;
	/** Notable points for the line (end points) */
	protected final GeoPoint[] planePoints;
	/** A computed center point for the line */
	protected final GeoPoint centerPoint;
	/** A point that's on the line */
	protected final GeoPoint[] edgePoints;

	/**
	* Accepts only values in the following ranges: lat: {@code -PI/2 -> PI/2}, longitude: {@code -PI -> PI}
	*/
	public GeoDegenerateVerticalLine(final PlanetModel planetModel, final double topLat, final double bottomLat, final double longitude) {
	super(planetModel);
	// Argument checking
	if (topLat > Math.PI * 0.5 \|\| topLat < -Math.PI * 0.5)
	throw new IllegalArgumentException("Top latitude out of range");
	if (bottomLat > Math.PI * 0.5 \|\| bottomLat < -Math.PI * 0.5)
	throw new IllegalArgumentException("Bottom latitude out of range");
	if (topLat < bottomLat)
	throw new IllegalArgumentException("Top latitude less than bottom latitude");
	if (longitude < -Math.PI \|\| longitude > Math.PI)
	throw new IllegalArgumentException("Longitude out of range");

	this.topLat = topLat;
	this.bottomLat = bottomLat;
	this.longitude = longitude;

	final double sinTopLat = Math.sin(topLat);
	final double cosTopLat = Math.cos(topLat);
	final double sinBottomLat = Math.sin(bottomLat);
	final double cosBottomLat = Math.cos(bottomLat);
	final double sinLongitude = Math.sin(longitude);
	final double cosLongitude = Math.cos(longitude);

	// Now build the two points
	this.UHC = new GeoPoint(planetModel, sinTopLat, sinLongitude, cosTopLat, cosLongitude, topLat, longitude);
	this.LHC = new GeoPoint(planetModel, sinBottomLat, sinLongitude, cosBottomLat, cosLongitude, bottomLat, longitude);

	this.plane = new Plane(cosLongitude, sinLongitude);

	final double middleLat = (topLat + bottomLat) * 0.5;
	final double sinMiddleLat = Math.sin(middleLat);
	final double cosMiddleLat = Math.cos(middleLat);

	this.centerPoint = new GeoPoint(planetModel, sinMiddleLat, sinLongitude, cosMiddleLat, cosLongitude);

	this.topPlane = new SidedPlane(centerPoint, planetModel, sinTopLat);
	this.bottomPlane = new SidedPlane(centerPoint, planetModel, sinBottomLat);

	this.boundingPlane = new SidedPlane(centerPoint, -sinLongitude, cosLongitude);

	this.planePoints = new GeoPoint[]{UHC, LHC};

	this.edgePoints = new GeoPoint[]{centerPoint};
	}

	/**
	* Constructor for deserialization.
	* @param planetModel is the planet model.
	* @param inputStream is the input stream.
	*/
	public GeoDegenerateVerticalLine(final PlanetModel planetModel, final InputStream inputStream) throws IOException {
	this(planetModel, SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream));
	}

	@Override
	public void write(final OutputStream outputStream) throws IOException {
	SerializableObject.writeDouble(outputStream, topLat);
	SerializableObject.writeDouble(outputStream, bottomLat);
	SerializableObject.writeDouble(outputStream, longitude);
	}

	@Override
	public GeoBBox expand(final double angle) {
	final double newTopLat = topLat + angle;
	final double newBottomLat = bottomLat - angle;
	double newLeftLon = longitude - angle;
	double newRightLon = longitude + angle;
	double currentLonSpan = 2.0 * angle;
	if (currentLonSpan + 2.0 * angle >= Math.PI * 2.0) {
	newLeftLon = -Math.PI;
	newRightLon = Math.PI;
	}
	return GeoBBoxFactory.makeGeoBBox(planetModel, newTopLat, newBottomLat, newLeftLon, newRightLon);
	}

	@Override
	public boolean isWithin(final double x, final double y, final double z) {
	return plane.evaluateIsZero(x, y, z) &&
	boundingPlane.isWithin(x, y, z) &&
	topPlane.isWithin(x, y, z) &&
	bottomPlane.isWithin(x, y, z);
	}

	@Override
	public double getRadius() {
	// Here we compute the distance from the middle point to one of the corners. However, we need to be careful
	// to use the longest of three distances: the distance to a corner on the top; the distnace to a corner on the bottom, and
	// the distance to the right or left edge from the center.
	final double topAngle = centerPoint.arcDistance(UHC);
	final double bottomAngle = centerPoint.arcDistance(LHC);
	return Math.max(topAngle, bottomAngle);
	}

	@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) {
	return p.intersects(planetModel, plane, notablePoints, planePoints, bounds, boundingPlane, topPlane, bottomPlane);
	}

	@Override
	public boolean intersects(final GeoShape geoShape) {
	return geoShape.intersects(plane, planePoints, boundingPlane, topPlane, bottomPlane);
	}

	@Override
	public void getBounds(Bounds bounds) {
	super.getBounds(bounds);
	bounds.addVerticalPlane(planetModel, longitude, plane, boundingPlane, topPlane, bottomPlane)
	.addPoint(UHC).addPoint(LHC);
	}

	@Override
	public int getRelationship(final GeoShape path) {
	//System.err.println(this+" relationship to "+path);
	if (intersects(path)) {
	//System.err.println(" overlaps");
	return OVERLAPS;
	}

	if (path.isWithin(centerPoint)) {
	//System.err.println(" contains");
	return CONTAINS;
	}

	//System.err.println(" disjoint");
	return DISJOINT;
	}

	@Override
	protected double outsideDistance(final DistanceStyle distanceStyle, final double x, final double y, final double z) {
	final double distance = distanceStyle.computeDistance(planetModel, plane, x,y,z, topPlane, bottomPlane, boundingPlane);

	final double UHCDistance = distanceStyle.computeDistance(UHC, x,y,z);
	final double LHCDistance = distanceStyle.computeDistance(LHC, x,y,z);

	return Math.min(
	distance,
	Math.min(UHCDistance, LHCDistance));
	}

	@Override
	public boolean equals(Object o) {
	if (!(o instanceof GeoDegenerateVerticalLine))
	return false;
	GeoDegenerateVerticalLine other = (GeoDegenerateVerticalLine) o;
	return super.equals(other) && other.UHC.equals(UHC) && other.LHC.equals(LHC);
	}

	@Override
	public int hashCode() {
	int result = super.hashCode();
	result = 31 * result + UHC.hashCode();
	result = 31 * result + LHC.hashCode();
	return result;
	}

	@Override
	public String toString() {
	return "GeoDegenerateVerticalLine: {longitude=" + longitude + "(" + longitude * 180.0 / Math.PI + "), toplat=" + topLat + "(" + topLat * 180.0 / Math.PI + "), bottomlat=" + bottomLat + "(" + bottomLat * 180.0 / Math.PI + ")}";
	}
	}