public virtual void TestCreation1()
{
// Simple area and length calcul test
com.esri.core.geometry.Polygon poly = new com.esri.core.geometry.Polygon();
int number = poly.GetStateFlag();
com.esri.core.geometry.Envelope env = new com.esri.core.geometry.Envelope(1000, 2000, 1010, 2010);
env.ToString();
poly.AddEnvelope(env, false);
poly.ToString();
number = poly.GetStateFlag();
NUnit.Framework.Assert.IsTrue(System.Math.Abs(poly.CalculateArea2D() - 100) < 1e-12);
NUnit.Framework.Assert.IsTrue(System.Math.Abs(poly.CalculateLength2D() - 40) < 1e-12);
poly.SetEmpty();
number = poly.GetStateFlag();
poly.AddEnvelope(env, true);
number = poly.GetStateFlag();
NUnit.Framework.Assert.IsTrue(System.Math.Abs(poly.CalculateArea2D() + 100) < 1e-12);
number = poly.GetStateFlag();
}
public static void TestPolygonAreaAndLength()
{
com.esri.core.geometry.Polygon poly;
/* const */
double r = 1.0;
/* const */
double epsilon = 1.0e-14;
/* const */
int nMax = 40;
// If r == 1.0 and nMax == 40 and epsilon == 1.0e-14, it will pass.
// But if r == 1.0 and nMax == 40 and epsilon == 1.0e-15, it will fail.
for (int n = 3; n < nMax; n++)
{
// regular polygon with n vertices and length from center to vertex
// = r
poly = new com.esri.core.geometry.Polygon();
double theta = 0.0;
poly.StartPath(r, 0.0);
for (int k = 1; k <= n; k++)
{
theta -= 2 * System.Math.PI / n;
poly.LineTo(r * System.Math.Cos(theta), r * System.Math.Sin(theta));
}
double sinPiOverN = System.Math.Sin(System.Math.PI / n);
double sinTwoPiOverN = System.Math.Sin(2.0 * System.Math.PI / n);
double analyticalLength = 2.0 * n * r * sinPiOverN;
double analyticalArea = 0.5 * n * r * r * sinTwoPiOverN;
double calculatedLength = poly.CalculateLength2D();
double calculatedArea = poly.CalculateArea2D();
NUnit.Framework.Assert.IsTrue(System.Math.Abs(analyticalLength - calculatedLength) < epsilon);
NUnit.Framework.Assert.IsTrue(System.Math.Abs(analyticalArea - calculatedArea) < epsilon);
}
}
public virtual void TestReverseAllPaths()
{
com.esri.core.geometry.Polygon poly = new com.esri.core.geometry.Polygon();
poly.StartPath(10, 1);
poly.LineTo(15, 20);
poly.LineTo(30, 14);
poly.LineTo(60, 144);
poly.StartPath(10, 1);
poly.LineTo(15, 20);
poly.LineTo(300, 14);
poly.LineTo(60, 144);
poly.StartPath(10, 1);
poly.LineTo(125, 20);
poly.LineTo(30, 14);
poly.LineTo(600, 144);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 0, 0,
// 2);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 1, 0,
// 3);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 2, 0,
// 5);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 3, 0,
// 7);
//
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 4, 0,
// 11);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 5, 0,
// 13);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 6, 0,
// 17);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 7, 0,
// 19);
//
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 8, 0,
// 23);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 9, 0,
// 29);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 10,
// 0, 31);
// poly.setAttribute(enum_value2(VertexDescription, Semantics, Z), 11,
// 0, 37);
double area = poly.CalculateArea2D();
poly.ReverseAllPaths();
double areaReversed = poly.CalculateArea2D();
NUnit.Framework.Assert.IsTrue(System.Math.Abs(area + areaReversed) <= 0.001);
}
public virtual void TestRemovepath()
{
com.esri.core.geometry.Polygon poly = new com.esri.core.geometry.Polygon();
poly.StartPath(10, 1);
poly.LineTo(15, 20);
poly.LineTo(30, 14);
poly.LineTo(60, 144);
poly.StartPath(10, 1);
poly.LineTo(15, 20);
poly.LineTo(300, 14);
poly.LineTo(60, 144);
poly.StartPath(10, 1);
poly.LineTo(125, 20);
poly.LineTo(30, 14);
poly.LineTo(600, 144);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 0,
// 0, 2);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 1,
// 0, 3);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 2,
// 0, 5);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 3,
// 0, 7);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 4,
// 0, 11);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 5,
// 0, 13);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 6,
// 0, 17);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 7,
// 0, 19);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 8,
// 0, 23);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 9,
// 0, 29);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 10,
// 0, 31);
// poly->SetAttribute(enum_value2(VertexDescription, Semantics, Z), 11,
// 0, 37);
poly.RemovePath(1);
NUnit.Framework.Assert.IsTrue(poly.GetPathCount() == 2);
NUnit.Framework.Assert.IsTrue(poly.GetPathStart(1) == 4);
NUnit.Framework.Assert.IsTrue(poly.IsClosedPath(0));
NUnit.Framework.Assert.IsTrue(poly.IsClosedPath(1));
com.esri.core.geometry.Point ptOut = poly.GetPoint(4);
NUnit.Framework.Assert.IsTrue(ptOut.GetX() == 10 && ptOut.GetY() == 1);
poly.RemovePath(0);
poly.RemovePath(0);
NUnit.Framework.Assert.IsTrue(poly.GetPathCount() == 0);
com.esri.core.geometry.Polygon poly2 = new com.esri.core.geometry.Polygon();
poly2.StartPath(0, 0);
poly2.LineTo(0, 10);
poly2.LineTo(10, 10);
poly2.StartPath(1, 1);
poly2.LineTo(2, 2);
poly2.RemovePath(0);
// poly2->StartPath(0, 0);
poly2.LineTo(0, 10);
poly2.LineTo(10, 10);
// Polygon polygon2 = new Polygon();
// polygon2.addPath(poly, -1, true);
// polygon2.addPath(poly, -1, true);
// polygon2.addPath(poly, -1, true);
// assertTrue(polygon2.getPathCount() == 3);
// polygon2.removePath(0);
// polygon2.removePath(0);
// polygon2.removePath(0);
// assertTrue(polygon2.getPathCount() == 0);
// polygon2.addPath(poly, -1, true);
// Point point1 = new Point();
// Point point2 = new Point();
// point1.setX(0);
// point1.setY(0);
// point2.setX(0);
// point2.setY(0);
// polygon2.addPath(poly2, 0, true);
// polygon2.removePath(0);
// polygon2.insertPoint(0, 0, point1);
// polygon2.insertPoint(0, 0, point2);
// assertTrue(polygon2.getPathCount() == 1);
// assertTrue(polygon2.getPointCount() == 2);
com.esri.core.geometry.Polygon polygon3 = new com.esri.core.geometry.Polygon();
polygon3.StartPath(0, 0);
polygon3.LineTo(0, 10);
polygon3.LineTo(10, 10);
double area = polygon3.CalculateArea2D();
polygon3.RemovePath(0);
polygon3.StartPath(0, 0);
polygon3.LineTo(0, 10);
polygon3.LineTo(10, 10);
area = polygon3.CalculateArea2D();
NUnit.Framework.Assert.IsTrue(area > 0.0);
}
