public static void testDifferenceOnPolyline()
{
// # * * #
// # * @
// # @ *
// # *
//
// ///////////////////////////////
//
// The polyline drawn in *s represents basePl
// The polyline drawn in #s represents compPl
// The @ represents their intersection points, so that
// the difference polyline will be basePl with two new vertices @ added.
com.esri.core.geometry.Polyline basePl = new com.esri.core.geometry.Polyline();
basePl.startPath(new com.esri.core.geometry.Point(-117, 20));
basePl.lineTo(new com.esri.core.geometry.Point(-130, 10));
basePl.lineTo(new com.esri.core.geometry.Point(-120, 50));
com.esri.core.geometry.Polyline compPl = new com.esri.core.geometry.Polyline();
compPl.startPath(new com.esri.core.geometry.Point(-116, 20));
compPl.lineTo(new com.esri.core.geometry.Point(-131, 10));
compPl.lineTo(new com.esri.core.geometry.Point(-121, 50));
com.esri.core.geometry.Geometry diffGeom = com.esri.core.geometry.GeometryEngine.
difference(basePl, compPl, com.esri.core.geometry.SpatialReference.create(4326));
NUnit.Framework.Assert.IsTrue(diffGeom is com.esri.core.geometry.Polyline);
com.esri.core.geometry.Polyline diffPolyline = (com.esri.core.geometry.Polyline)diffGeom;
int pointCountDiffPolyline = diffPolyline.getPointCount();
// first line in comp_pl is 3y = 2x + 292
NUnit.Framework.Assert.AreEqual(3 * 20, 2 * (-116) + 292);
NUnit.Framework.Assert.AreEqual(3 * 10, 2 * (-131) + 292);
// new points should also lie on this line
NUnit.Framework.Assert.IsTrue(3.0 * diffPolyline.getCoordinates2D()[1].y - 2.0 *
diffPolyline.getCoordinates2D()[1].x - 292.0 == 0.0);
NUnit.Framework.Assert.IsTrue(3.0 * diffPolyline.getCoordinates2D()[3].y - 2.0 *
diffPolyline.getCoordinates2D()[3].x - 292.0 == 0.0);
for (int i = 0; i < 3; i++)
{
NUnit.Framework.Assert.IsTrue(basePl.getCoordinates2D()[i].x == diffPolyline.getCoordinates2D
()[2 * i].x);
NUnit.Framework.Assert.IsTrue(basePl.getCoordinates2D()[i].y == diffPolyline.getCoordinates2D
()[2 * i].y);
}
NUnit.Framework.Assert.AreEqual(5, pointCountDiffPolyline);
}
public static void test2()
{
com.esri.core.geometry.OperatorFactoryLocal engine = com.esri.core.geometry.OperatorFactoryLocal
.getInstance();
com.esri.core.geometry.OperatorGeneralize op = (com.esri.core.geometry.OperatorGeneralize
)engine.getOperator(com.esri.core.geometry.Operator.Type.Generalize);
com.esri.core.geometry.Polyline polyline = new com.esri.core.geometry.Polyline();
polyline.startPath(0, 0);
polyline.lineTo(1, 1);
polyline.lineTo(2, 0);
polyline.lineTo(3, 2);
polyline.lineTo(4, 1);
polyline.lineTo(5, 0);
polyline.lineTo(5, 10);
polyline.lineTo(0, 10);
com.esri.core.geometry.Geometry geom = op.execute(polyline, 2, true, null);
com.esri.core.geometry.Polyline p = (com.esri.core.geometry.Polyline)geom;
com.esri.core.geometry.Point2D[] points = p.getCoordinates2D();
NUnit.Framework.Assert.IsTrue(points.Length == 4);
NUnit.Framework.Assert.IsTrue(points[0].x == 0 && points[0].y == 0);
NUnit.Framework.Assert.IsTrue(points[1].x == 5 && points[1].y == 0);
NUnit.Framework.Assert.IsTrue(points[2].x == 5 && points[2].y == 10);
NUnit.Framework.Assert.IsTrue(points[3].x == 0 && points[3].y == 10);
com.esri.core.geometry.Geometry geom1 = op.execute(geom, 5, false, null);
p = (com.esri.core.geometry.Polyline)geom1;
points = p.getCoordinates2D();
NUnit.Framework.Assert.IsTrue(points.Length == 2);
NUnit.Framework.Assert.IsTrue(points[0].x == 0 && points[0].y == 0);
NUnit.Framework.Assert.IsTrue(points[1].x == 0 && points[1].y == 10);
geom1 = op.execute(geom, 5, true, null);
p = (com.esri.core.geometry.Polyline)geom1;
points = p.getCoordinates2D();
NUnit.Framework.Assert.IsTrue(points.Length == 2);
NUnit.Framework.Assert.IsTrue(points[0].x == 0 && points[0].y == 0);
NUnit.Framework.Assert.IsTrue(points[1].x == 0 && points[1].y == 10);
}
