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 TestCut extends TestCase {
  	@Override
  	protected void setUp() throws Exception {
  		super.setUp();
  	}
  
  	@Override
  	protected void tearDown() throws Exception {
  		super.tearDown();
  	}
  
  	@Test
  	public static void testCut4326() {
  		SpatialReference sr = SpatialReference.create(4326);
  		testConsiderTouch1(sr);
  		testConsiderTouch2(sr);
  		testPolygon5(sr);
  		testPolygon7(sr);
  		testPolygon8(sr);
  		testPolygon9(sr);
  		testEngine(sr);
  
  	}
  
  	private static void testConsiderTouch1(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polyline polyline1 = makePolyline1();
  		Polyline cutter1 = makePolylineCutter1();
  
  		GeometryCursor cursor = opCut.execute(true, polyline1, cutter1,
  				spatialReference, null);
  		Polyline cut;
  		int pathCount;
  		int segmentCount;
  		double length;
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 4);
  		assertTrue(segmentCount == 4);
  		assertTrue(length == 6);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 6);
  		assertTrue(segmentCount == 8);
  		assertTrue(length == 12);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(length == 1);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(length == 1);
  
  		cut = (Polyline) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testConsiderTouch2(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polyline polyline2 = makePolyline2();
  		Polyline cutter2 = makePolylineCutter2();
  
  		GeometryCursor cursor = opCut.execute(true, polyline2, cutter2,
  				spatialReference, null);
  		Polyline cut;
  		int pathCount;
  		int segmentCount;
  		double length;
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 4);
  		assertTrue(segmentCount == 4);
  		assertTrue(Math.abs(length - 5.74264068) <= 0.001);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 6);
  		assertTrue(segmentCount == 8);
  		assertTrue(length == 6.75);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(Math.abs(length - 0.5) <= 0.001);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(Math.abs(length - 0.25) <= 0.001);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(Math.abs(length - 1) <= 0.001);
  
  		cut = (Polyline) cursor.next();
  		pathCount = cut.getPathCount();
  		segmentCount = cut.getSegmentCount();
  		length = cut.calculateLength2D();
  		assertTrue(pathCount == 1);
  		assertTrue(segmentCount == 1);
  		assertTrue(Math.abs(length - 1.41421356) <= 0.001);
  
  		cut = (Polyline) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testPolygon5(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polygon polygon5 = makePolygon5();
  		Polyline cutter5 = makePolygonCutter5();
  
  		GeometryCursor cursor = opCut.execute(true, polygon5, cutter5,
  				spatialReference, null);
  		Polygon cut;
  		int pathCount;
  		int pointCount;
  		double area;
  
  		cut = (Polygon) cursor.next();
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 4);
  		assertTrue(pointCount == 12);
  		assertTrue(area == 450);
  
  		cut = (Polygon) cursor.next();
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 1);
  		assertTrue(pointCount == 4);
  		assertTrue(area == 450);
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testPolygon7(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polygon cut;
  		int path_count;
  		int point_count;
  		double area;
  
  		Polygon polygon7 = makePolygon7();
  		Polyline cutter7 = makePolygonCutter7();
  		GeometryCursor cursor = opCut.execute(false, polygon7, cutter7,
  				spatialReference, null);
  
  		cut = (Polygon) cursor.next();
  		path_count = cut.getPathCount();
  		point_count = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(path_count == 1);
  		assertTrue(point_count == 4);
  		assertTrue(area == 100);
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut.isEmpty());
  
  		cut = (Polygon) cursor.next();
  		path_count = cut.getPathCount();
  		point_count = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(path_count == 2);
  		assertTrue(point_count == 8);
  		assertTrue(area == 800);
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testPolygon8(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polygon polygon8 = makePolygon8();
  		Polyline cutter8 = makePolygonCutter8();
  
  		GeometryCursor cursor = opCut.execute(true, polygon8, cutter8,
  				spatialReference, null);
  		Polygon cut;
  		int pathCount;
  		int pointCount;
  		double area;
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut.isEmpty());
  
  		cut = (Polygon) cursor.next();
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 1);
  		assertTrue(pointCount == 4);
  		assertTrue(area == 100);
  
  		cut = (Polygon) cursor.next();
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 2);
  		assertTrue(pointCount == 8);
  		assertTrue(area == 800);
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testPolygon9(SpatialReference spatialReference) {
  		OperatorFactoryLocal engine = OperatorFactoryLocal.getInstance();
  		OperatorCut opCut = (OperatorCut) engine.getOperator(Operator.Type.Cut);
  
  		Polygon cut;
  		int path_count;
  		int point_count;
  		double area;
  
  		Polygon polygon9 = makePolygon9();
  		Polyline cutter9 = makePolygonCutter9();
  		GeometryCursor cursor = opCut.execute(false, polygon9, cutter9,
  				spatialReference, null);
  
  		cut = (Polygon) cursor.next();
  		path_count = cut.getPathCount();
  		point_count = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(path_count == 3);
  		assertTrue(point_count == 12);
  		assertTrue(area == 150);
  
  		cut = (Polygon) cursor.next();
  		path_count = cut.getPathCount();
  		point_count = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(path_count == 3);
  		assertTrue(point_count == 12);
  		assertTrue(area == 150);
  
  		cut = (Polygon) cursor.next();
  		assertTrue(cut == null);
  	}
  
  	private static void testEngine(SpatialReference spatialReference) {
  		Polygon polygon8 = makePolygon8();
  		Polyline cutter8 = makePolygonCutter8();
  
  		Geometry[] cuts = GeometryEngine.cut(polygon8, cutter8,
  				spatialReference);
  		Polygon cut;
  		int pathCount;
  		int pointCount;
  		double area;
  
  		cut = (Polygon) cuts[0];
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 1);
  		assertTrue(pointCount == 4);
  		assertTrue(area == 100);
  
  		cut = (Polygon) cuts[1];
  		pathCount = cut.getPathCount();
  		pointCount = cut.getPointCount();
  		area = cut.calculateArea2D();
  		assertTrue(pathCount == 2);
  		assertTrue(pointCount == 8);
  		assertTrue(area == 800);
  	}
  
  	private static Polyline makePolyline1() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(0, 0);
  		poly.lineTo(2, 0);
  		poly.lineTo(4, 0);
  		poly.lineTo(6, 0);
  		poly.lineTo(8, 0);
  		poly.lineTo(10, 0);
  		poly.lineTo(12, 0);
  		poly.lineTo(14, 0);
  		poly.lineTo(16, 0);
  		poly.lineTo(18, 0);
  		poly.lineTo(20, 0);
  
  		return poly;
  	}
  
  	private static Polyline makePolylineCutter1() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(1, 0);
  		poly.lineTo(4, 0);
  
  		poly.startPath(6, -1);
  		poly.lineTo(6, 1);
  
  		poly.startPath(6, 0);
  		poly.lineTo(8, 0);
  
  		poly.startPath(9, -1);
  		poly.lineTo(9, 1);
  
  		poly.startPath(10, 0);
  		poly.lineTo(12, 0);
  
  		poly.startPath(12, 1);
  		poly.lineTo(12, -1);
  
  		poly.startPath(12, 0);
  		poly.lineTo(15, 0);
  
  		poly.startPath(15, 1);
  		poly.lineTo(15, -1);
  
  		poly.startPath(16, 0);
  		poly.lineTo(16, -1);
  		poly.lineTo(17, -1);
  		poly.lineTo(17, 1);
  		poly.lineTo(17, 0);
  		poly.lineTo(18, 0);
  
  		poly.startPath(18, 0);
  		poly.lineTo(18, -1);
  
  		return poly;
  	}
  
  	private static Polyline makePolyline2() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(-2, 0);
  		poly.lineTo(-1, 0);
  		poly.lineTo(0, 0);
  		poly.lineTo(2, 0);
  		poly.lineTo(4, 2);
  		poly.lineTo(8, 2);
  		poly.lineTo(10, 4);
  		poly.lineTo(12, 4);
  
  		return poly;
  	}
  
  	private static Polyline makePolylineCutter2() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(-1.5, 0);
  		poly.lineTo(-.75, 0);
  
  		poly.startPath(-.5, 0);
  		poly.lineTo(1, 0);
  		poly.lineTo(1, 2);
  		poly.lineTo(3, -2);
  		poly.lineTo(4, 2);
  		poly.lineTo(5, -2);
  		poly.lineTo(5, 4);
  		poly.lineTo(8, 2);
  		poly.lineTo(6, 0);
  		poly.lineTo(6, 3);
  
  		poly.startPath(9, 5);
  		poly.lineTo(9, 2);
  		poly.lineTo(10, 2);
  		poly.lineTo(10, 5);
  		poly.lineTo(10.5, 5);
  		poly.lineTo(10.5, 3);
  
  		poly.startPath(11, 4);
  		poly.lineTo(11, 5);
  
  		poly.startPath(12, 5);
  		poly.lineTo(12, 4);
  
  		return poly;
  	}
  
  	private static Polygon makePolygon5() {
  		Polygon poly = new Polygon();
  
  		poly.startPath(0, 0);
  		poly.lineTo(0, 30);
  		poly.lineTo(30, 30);
  		poly.lineTo(30, 0);
  
  		return poly;
  	}
  
  	private static Polyline makePolygonCutter5() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(15, 0);
  		poly.lineTo(0, 15);
  		poly.lineTo(15, 30);
  		poly.lineTo(30, 15);
  		poly.lineTo(15, 0);
  
  		return poly;
  	}
  
  	private static Polygon makePolygon7() {
  		Polygon poly = new Polygon();
  
  		poly.startPath(0, 0);
  		poly.lineTo(0, 30);
  		poly.lineTo(30, 30);
  		poly.lineTo(30, 0);
  
  		return poly;
  	}
  
  	private static Polyline makePolygonCutter7() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(10, 10);
  		poly.lineTo(20, 10);
  		poly.lineTo(20, 20);
  		poly.lineTo(10, 20);
  		poly.lineTo(10, 10);
  
  		return poly;
  	}
  
  	private static Polygon makePolygon8() {
  		Polygon poly = new Polygon();
  
  		poly.startPath(0, 0);
  		poly.lineTo(0, 30);
  		poly.lineTo(30, 30);
  		poly.lineTo(30, 0);
  
  		return poly;
  	}
  
  	private static Polyline makePolygonCutter8() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(10, 10);
  		poly.lineTo(10, 20);
  		poly.lineTo(20, 20);
  		poly.lineTo(20, 10);
  		poly.lineTo(10, 10);
  
  		return poly;
  	}
  
  	private static Polygon makePolygon9() {
  		Polygon poly = new Polygon();
  
  		poly.startPath(0, 0);
  		poly.lineTo(0, 10);
  		poly.lineTo(10, 10);
  		poly.lineTo(10, 0);
  
  		poly.startPath(0, 20);
  		poly.lineTo(0, 30);
  		poly.lineTo(10, 30);
  		poly.lineTo(10, 20);
  
  		poly.startPath(0, 40);
  		poly.lineTo(0, 50);
  		poly.lineTo(10, 50);
  		poly.lineTo(10, 40);
  
  		return poly;
  	}
  
  	private static Polyline makePolygonCutter9() {
  		Polyline poly = new Polyline();
  
  		poly.startPath(5, -1);
  		poly.lineTo(5, 51);
  
  		return poly;
  	}
  	
  	@Test
  	public void testGithubIssue253() {
  		//https://github.com/Esri/geometry-api-java/issues/253
  		SpatialReference spatialReference = SpatialReference.create(3857);
  		Polyline poly1 = new Polyline();
  		poly1.startPath(610, 552);
  		poly1.lineTo(610, 552);
  		Polyline poly2 = new Polyline();
  		poly2.startPath(610, 552);
  		poly2.lineTo(610, 552);
  		GeometryCursor cursor = OperatorCut.local().execute(true, poly1, poly2, spatialReference, null);
  
  		Geometry res = cursor.next();
  		assertTrue(res == null);
  	}	
  }
  