com.hazelcast.shaded.org.locationtech.jts.geomgraph.EdgeIntersection Maven / Gradle / Ivy
/*
* Copyright (c) 2016 Vivid Solutions.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v20.html
* and the Eclipse Distribution License is available at
*
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package com.hazelcast.shaded.org.locationtech.jts.geomgraph;
import java.io.PrintStream;
import com.hazelcast.shaded.org.locationtech.jts.geom.Coordinate;
/**
* Represents a point on an
* edge which intersects with another edge.
*
* The intersection may either be a single point, or a line segment
* (in which case this point is the start of the line segment)
* The intersection point must be precise.
*
* @version 1.7
*/
public class EdgeIntersection
implements Comparable
{
/** Point of intersection */
public Coordinate coord;
/** Index of the containing line segment in the parent edge */
public int segmentIndex;
/** Edge distance of this point along the containing line segment */
public double dist;
/**
* EdgeIntersection.
*
* @param coord Point of intersection
* @param segmentIndex Index of the containing line segment in the parent edge
* @param dist Edge distance of this point along the containing line segment
*/
public EdgeIntersection(Coordinate coord, int segmentIndex, double dist) {
this.coord = new Coordinate(coord);
this.segmentIndex = segmentIndex;
this.dist = dist;
}
public Coordinate getCoordinate() { return coord; }
public int getSegmentIndex() { return segmentIndex; }
public double getDistance() { return dist; }
public int compareTo(Object obj)
{
EdgeIntersection other = (EdgeIntersection) obj;
return compare(other.segmentIndex, other.dist);
}
/**
* Comparison with segment and distance.
*
* @param segmentIndex index of the containing line segment
* @param dist dge distance of this point along the containing line segment
* @return {@code 1} this EdgeIntersection is located before the argument location,
* {@code 0} this EdgeIntersection is at the argument location,
* {@code 1} this EdgeIntersection is located after the argument location
*/
public int compare(int segmentIndex, double dist)
{
if (this.segmentIndex < segmentIndex) return -1;
if (this.segmentIndex > segmentIndex) return 1;
if (this.dist < dist) return -1;
if (this.dist > dist) return 1;
return 0;
}
public boolean isEndPoint(int maxSegmentIndex)
{
if (segmentIndex == 0 && dist == 0.0) return true;
if (segmentIndex == maxSegmentIndex) return true;
return false;
}
public void print(PrintStream out)
{
out.print(coord);
out.print(" seg # = " + segmentIndex);
out.println(" dist = " + dist);
}
public String toString()
{
return coord + " seg # = " + segmentIndex + " dist = " + dist;
}
}