code: /*
   Copyright 1995-2017 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 junit.framework.TestCase;
  import org.junit.Test;
  
  public class TestProximity2D extends TestCase {
  	@Override
  	protected void setUp() throws Exception {
  		super.setUp();
  	}
  
  	@Override
  	protected void tearDown() throws Exception {
  		super.tearDown();
  	}
  
  	@Test
  	public void testProximity_2D_1() {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  
  		@SuppressWarnings("unused")
  		OperatorProximity2D proximityOp = (OperatorProximity2D) engine
  				.getOperator(Operator.Type.Proximity2D);
  
  		Point inputPoint = new Point(3, 2);
  
  		Point point0 = new Point(2.75, 2);
  		// Point point1 = new Point(3, 2.5);
  		// Point point2 = new Point(3.75, 2);
  		// Point point3 = new Point(2.25, 2.5);
  		// Point point4 = new Point(4, 2.25);
  
  		// GetNearestVertices for Polygon (Native and DotNet)
  		Polygon polygon = MakePolygon();
  
  		Proximity2DResult[] resultArray = GeometryEngine.getNearestVertices(
  				polygon, inputPoint, 2.0, 8);
  		assertTrue(resultArray.length == 8);
  
  		double lastdistance;
  		double distance;
  
  		Proximity2DResult result0 = resultArray[0];
  		lastdistance = result0.getDistance();
  		assertTrue(lastdistance <= 2.0);
  
  		Proximity2DResult result1 = resultArray[1];
  		distance = result1.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result2 = resultArray[2];
  		distance = result2.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result3 = resultArray[3];
  		distance = result3.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result4 = resultArray[4];
  		distance = result4.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result5 = resultArray[5];
  		distance = result5.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result6 = resultArray[6];
  		distance = result6.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		lastdistance = distance;
  
  		Proximity2DResult result7 = resultArray[7];
  		distance = result7.getDistance();
  		assertTrue(distance <= 2.0 && distance >= lastdistance);
  		// lastdistance = distance;
  
  		// Point[] coordinates = polygon.get.getCoordinates2D();
  		// int pointCount = polygon.getPointCount();
  		//
  		// int hits = 0;
  		// for (int i = 0; i < pointCount; i++)
  		// {
  		// Point ipoint = coordinates[i];
  		// distance = Point::Distance(ipoint, inputPoint);
  		//
  		// if (distance < lastdistance)
  		// hits++;
  		// }
  
  		// assertTrue(hits < 8);
  
  		// GetNearestVertices for Point
  		Point point = MakePoint();
  		resultArray = GeometryEngine.getNearestVertices(point, inputPoint, 1.0,
  				1);
  		assertTrue(resultArray.length == 1);
  		result0 = resultArray[0];
  		Point resultPoint0 = result0.getCoordinate();
  		assertTrue(resultPoint0.getX() == point.getX()
  				&& resultPoint0.getY() == point.getY());
  
  		// GetNearestVertex for Polygon
  		result0 = GeometryEngine.getNearestVertex(polygon, inputPoint);
  		resultPoint0 = result0.getCoordinate();
  		assertTrue(resultPoint0.getX() == point0.getX()
  				&& resultPoint0.getY() == point0.getY());
  
  		// GetNearestVertex for Point
  		result0 = GeometryEngine.getNearestVertex(point, inputPoint);
  		resultPoint0 = result0.getCoordinate();
  		assertTrue(resultPoint0.getX() == point.getX()
  				&& resultPoint0.getY() == point.getY());
  
  		// GetNearestCoordinate for Polygon
  		Polygon polygon2 = MakePolygon2();
  		result0 = GeometryEngine.getNearestCoordinate(polygon2, inputPoint,
  				true);
  		resultPoint0 = result0.getCoordinate();
  		assertTrue(resultPoint0.getX() == inputPoint.getX()
  				&& resultPoint0.getY() == inputPoint.getY());
  
  		// GetNearestCoordinate for Polyline
  		Polyline polyline = MakePolyline();
  		result0 = GeometryEngine.getNearestCoordinate(polyline, inputPoint,
  				true);
  		resultPoint0 = result0.getCoordinate();
  		assertTrue(resultPoint0.getX() == 0.0 && resultPoint0.getY() == 2.0);
  
  		Polygon pp = new Polygon();
  		pp.startPath(0, 0);
  		pp.lineTo(0, 10);
  		pp.lineTo(10, 10);
  		pp.lineTo(10, 0);
  
  		inputPoint.setXY(15, -5);
  
  		result0 = proximityOp.getNearestCoordinate(pp, inputPoint, true, true);
  		boolean is_right = result0.isRightSide();
  		assertTrue(!is_right);
  	}
  
  	Polygon MakePolygon() {
  		Polygon poly = new Polygon();
  		poly.startPath(3, -2);
  		poly.lineTo(2, -1);
  		poly.lineTo(3, 0);
  		poly.lineTo(4, 0);
  
  		poly.startPath(1.75, 1);
  		poly.lineTo(0.75, 2);
  		poly.lineTo(1.75, 3);
  		poly.lineTo(2.25, 2.5);
  		poly.lineTo(2.75, 2);
  
  		poly.startPath(3, 2.5);
  		poly.lineTo(2.5, 3);
  		poly.lineTo(2, 3.5);
  		poly.lineTo(3, 4.5);
  		poly.lineTo(4, 3.5);
  
  		poly.startPath(4.75, 1);
  		poly.lineTo(3.75, 2);
  		poly.lineTo(4, 2.25);
  		poly.lineTo(4.75, 3);
  		poly.lineTo(5.75, 2);
  
  		return poly;
  	}
  
  	Polygon MakePolygon2() {
  		Polygon poly = new Polygon();
  		poly.startPath(0, 0);
  		poly.lineTo(0, 10);
  		poly.lineTo(10, 10);
  		poly.lineTo(10, 0);
  
  		return poly;
  	}
  
  	Polyline MakePolyline() {
  		Polyline poly = new Polyline();
  		poly.startPath(0, 0);
  		poly.lineTo(0, 10);
  		poly.lineTo(10, 10);
  		poly.lineTo(10, 0);
  
  		return poly;
  	}
  
  	Point MakePoint() {
  		Point point = new Point(3, 2.5);
  
  		return point;
  	}
  
  	@Test
  	public void testProximity2D_2() {
  		Point point1 = new Point(3, 2);
  		Point point2 = new Point(2, 4);
  		Envelope envelope = new Envelope();
  		envelope.setCoords(4, 3, 7, 6);
  		Polygon polygonToTest = new Polygon();
  		polygonToTest.addEnvelope(envelope, false);
  		Proximity2DResult prxResult1 = GeometryEngine.getNearestVertex(
  				envelope, point1);
  		Proximity2DResult prxResult2 = GeometryEngine.getNearestVertex(
  				polygonToTest, point1);
  		Proximity2DResult prxResult3 = GeometryEngine.getNearestCoordinate(
  				envelope, point2, false);
  		Proximity2DResult prxResult4 = GeometryEngine.getNearestCoordinate(
  				polygonToTest, point2, false);
  
  		Point result1 = prxResult1.getCoordinate();
  		Point result2 = prxResult2.getCoordinate();
  		assertTrue(result1.getX() == result2.getX());
  		Point result3 = prxResult3.getCoordinate();
  		Point result4 = prxResult4.getCoordinate();
  		assertTrue(result3.getX() == result4.getX());
  	}
  
  	@Test
  	public static void testProximity2D_3() {
  		OperatorFactoryLocal factory = OperatorFactoryLocal.getInstance();
  		OperatorProximity2D proximity = (OperatorProximity2D) factory
  				.getOperator(com.esri.core.geometry.Operator.Type.Proximity2D);
  
  		Polygon polygon = new Polygon();
  		polygon.startPath(new Point(-120, 22));
  		polygon.lineTo(new Point(-120, 10));
  		polygon.lineTo(new Point(-110, 10));
  		polygon.lineTo(new Point(-110, 22));
  
  		Point point = new Point();
  		point.setXY(-110, 20);
  		Proximity2DResult result = proximity.getNearestCoordinate(polygon,
  				point, false);
  		Point point2 = new Point();
  		point2.setXY(-120, 12);
  		@SuppressWarnings("unused")
  		Proximity2DResult[] results = proximity.getNearestVertices(polygon,
  				point2, 10, 12);
  	}
  
  	@Test
  	public static void testCR254240() {
  		OperatorProximity2D proximityOp = OperatorProximity2D.local();
  
  		Point inputPoint = new Point(-12, 12);
  		Polyline line = new Polyline();
  		line.startPath(-10, 0);
  		line.lineTo(0, 0);
  
  		Proximity2DResult result = proximityOp.getNearestCoordinate(line,
  				inputPoint, false, true);
  		assertTrue(result.isRightSide() == false);
  	}
  }
  