public void PolygonIntersectionWithPolygon_NoIntersection_ReturnsEmptyCollection()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(5, 0),
new Point2D(5, 4),
new Point2D(9, 4),
new Point2D(9, 0)
};
// Call
IEnumerable <IEnumerable <Point2D> > intersections = AdvancedMath2D.PolygonIntersectionWithPolygon(polyA, polyB);
// Assert
CollectionAssert.IsEmpty(intersections);
}
public void PolygonIntersectionWithPolygon_PartlyIntersects_ReturnsPartialIntersection()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(0, 0),
new Point2D(0, 4),
new Point2D(2, 4),
new Point2D(2, 0)
};
// Call
IEnumerable <IEnumerable <Point2D> > intersections = AdvancedMath2D.PolygonIntersectionWithPolygon(polyA, polyB);
// Assert
Assert.AreEqual(1, intersections.Count());
CollectionAssert.AreEqual(polyB, intersections.ElementAt(0));
}
public void PolygonIntersectionWithPolygon_IntersectsComplete_ReturnsIntersectionEqualToPolygon()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(0, 0),
new Point2D(0, 4),
new Point2D(4, 4),
new Point2D(4, 0)
};
// Call
IEnumerable <IEnumerable <Point2D> > intersections = AdvancedMath2D.PolygonIntersectionWithPolygon(polyA, polyB);
// Assert
Assert.AreEqual(1, intersections.Count());
Assert.AreEqual(polyA, intersections.ElementAt(0));
}
public void PolygonIntersectionWithPolygon_WithSelfIntersectingPolygon_ThrowsInvalidPolygonException()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(4, 0),
new Point2D(4, 4),
new Point2D(6, 0),
new Point2D(8, 4),
new Point2D(8, 0)
};
// Call
void Call() => AdvancedMath2D.PolygonIntersectionWithPolygon(polyB, polyA);
// Assert
Assert.Throws <InvalidPolygonException>(Call);
}
public void PolygonIntersectionWithPolygon_IntersectsPolygonLineAndPoint_ReturnsTwoIntersections()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(0, -2),
new Point2D(0, 5),
new Point2D(0.5, 5),
new Point2D(0.5, -1),
new Point2D(1.0, 0),
new Point2D(1.5, 0),
new Point2D(2.0, -1),
new Point2D(3.0, 0),
new Point2D(4.0, -2)
};
// Call
IEnumerable <IEnumerable <Point2D> > intersections = AdvancedMath2D.PolygonIntersectionWithPolygon(polyA, polyB);
// Assert
Assert.AreEqual(3, intersections.Count());
CollectionAssert.AreEqual(new[]
{
new Point2D(3.0, 0.0)
}, intersections.ElementAt(0));
CollectionAssert.AreEqual(new[]
{
new Point2D(1.5, 0.0),
new Point2D(1.0, 0.0)
}, intersections.ElementAt(1));
CollectionAssert.AreEqual(new[]
{
new Point2D(0.0, 0.0),
new Point2D(0.0, 4.0),
new Point2D(0.5, 4.0),
new Point2D(0.5, 0.0)
}, intersections.ElementAt(2));
}
public void PolygonIntersectionWithPolygon_PartiallyIntersectsTwice_ReturnsTwoIntersections()
{
// Setup
Point2D[] polyA = CreateBasePolygon();
var polyB = new[]
{
new Point2D(2, 0),
new Point2D(2, 1),
new Point2D(5, 1),
new Point2D(5, 3),
new Point2D(2, 3),
new Point2D(2, 4),
new Point2D(6, 4),
new Point2D(6, 0)
};
// Call
IEnumerable <IEnumerable <Point2D> > intersections = AdvancedMath2D.PolygonIntersectionWithPolygon(polyA, polyB);
// Assert
Assert.AreEqual(2, intersections.Count());
CollectionAssert.AreEqual(new[]
{
new Point2D(2, 4),
new Point2D(4, 4),
new Point2D(4, 3),
new Point2D(2, 3)
}, intersections.ElementAt(0));
CollectionAssert.AreEqual(new[]
{
new Point2D(4, 1),
new Point2D(4, 0),
new Point2D(2, 0),
new Point2D(2, 1)
}, intersections.ElementAt(1));
}
private static IEnumerable <Point2D[]> GetSoilLayerWithSurfaceLineIntersection(IEnumerable <Point2D> surfaceLineGeometry, IEnumerable <Point2D> soilLayerGeometry)
{
return(AdvancedMath2D.PolygonIntersectionWithPolygon(surfaceLineGeometry, soilLayerGeometry).Where(arr => arr.Length > 2));
}
