com.hazelcast.shaded.org.locationtech.jts.noding.BasicSegmentString 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.noding;
import com.hazelcast.shaded.org.locationtech.jts.geom.Coordinate;
import com.hazelcast.shaded.org.locationtech.jts.geom.impl.CoordinateArraySequence;
import com.hazelcast.shaded.org.locationtech.jts.io.WKTWriter;
/**
* Represents a read-only list of contiguous line segments.
* This can be used for detection of intersections or nodes.
* {@link SegmentString}s can carry a context object, which is useful
* for preserving topological or parentage information.
*
* If adding nodes is required use {@link NodedSegmentString}.
*
* @version 1.7
* @see NodedSegmentString
*/
public class BasicSegmentString
implements SegmentString
{
private Coordinate[] pts;
private Object data;
/**
* Creates a new segment string from a list of vertices.
*
* @param pts the vertices of the segment string
* @param data the user-defined data of this segment string (may be null)
*/
public BasicSegmentString(Coordinate[] pts, Object data)
{
this.pts = pts;
this.data = data;
}
/**
* Gets the user-defined data for this segment string.
*
* @return the user-defined data
*/
public Object getData() { return data; }
/**
* Sets the user-defined data for this segment string.
*
* @param data an Object containing user-defined data
*/
public void setData(Object data) { this.data = data; }
public int size() { return pts.length; }
public Coordinate getCoordinate(int i) { return pts[i]; }
public Coordinate[] getCoordinates() { return pts; }
public boolean isClosed()
{
return pts[0].equals(pts[pts.length - 1]);
}
/**
* Gets the octant of the segment starting at vertex index.
*
* @param index the index of the vertex starting the segment. Must not be
* the last index in the vertex list
* @return the octant of the segment at the vertex
*/
public int getSegmentOctant(int index)
{
if (index == pts.length - 1) return -1;
return Octant.octant(getCoordinate(index), getCoordinate(index + 1));
}
public String toString()
{
return WKTWriter.toLineString(new CoordinateArraySequence(pts));
}
}