code: /*
   Copyright 1995-2018 Esri
  
     Licensed 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.
  
   For additional information, contact:
   Environmental Systems Research Institute, Inc.
   Attn: Contracts Dept
   380 New York Street
   Redlands, California, USA 92373
  
   email: contracts@esri.com
   */
  
  
  package com.esri.core.geometry;
  
  import java.io.Serializable;
  
  import static com.esri.core.geometry.SizeOf.SIZE_OF_POLYLINE;
  
  /**
   * A polyline is a collection of one or many paths.
   * 
   */
  public class Polyline extends MultiPath implements Serializable {
  
  	private static final long serialVersionUID = 2L;// TODO:remove as we use
  													// writeReplace and
  													// GeometrySerializer
  
  	/**
  	 * Creates an empty polyline.
  	 */
  	public Polyline() {
  		m_impl = new MultiPathImpl(false);
  	}
  
  	public Polyline(VertexDescription vd) {
  		m_impl = new MultiPathImpl(false, vd);
  	}
  
  	/**
  	 * Creates a polyline with one line segment.
  	 */
  	public Polyline(Point start, Point end) {
  		m_impl = new MultiPathImpl(false, start.getDescription());
  		startPath(start);
  		lineTo(end);
  	}
  
  	@Override
  	public Geometry createInstance() {
  		return new Polyline(getDescription());
  	}
  
  	@Override
  	public int getDimension() {
  		return 1;
  	}
  
  	@Override
  	public Geometry.Type getType() {
  		return Type.Polyline;
  	}
  
  	@Override
  	public long estimateMemorySize() {
  		return SIZE_OF_POLYLINE + m_impl.estimateMemorySize();
  	}
  
  	/**
  	 * Returns TRUE when this geometry has exactly same type, properties, and
  	 * coordinates as the other geometry.
  	 */
  	@Override
  	public boolean equals(Object other) {
  		if (other == null)
  			return false;
  
  		if (other == this)
  			return true;
  
  		if (other.getClass() != getClass())
  			return false;
  
  		return m_impl.equals(((Polyline) other)._getImpl());
  	}
  
  	/**
  	 * Returns the hash code for the polyline.
  	 */
  
  	@Override
  	public int hashCode() {
  		return m_impl.hashCode();
  	}
  
  	@Override
  	public void addSegment(Segment segment, boolean bStartNewPath) {
  		m_impl.addSegment(segment, bStartNewPath);
  	}
  
  	public void interpolateAttributes(int from_path_index,
  			int from_point_index, int to_path_index, int to_point_index) {
  		m_impl.interpolateAttributes(from_path_index, from_point_index,
  				to_path_index, to_point_index);
  	}
  
  	public void interpolateAttributes(int semantics, int from_path_index,
  			int from_point_index, int to_path_index, int to_point_index) {
  		m_impl.interpolateAttributesForSemantics(semantics, from_path_index,
  				from_point_index, to_path_index, to_point_index);
  	}
  }
  