public void Insert_ingASiteIntoTheIntersectionBetweenTwoSites_ShouldCreateFourArcsEachWithTheOthersSiteOnTheLeft
(Beachline beachline, SiteEvent leftSite, SiteEvent centralSite)
{
// Fixture setup
var upperColatitude = leftSite.Position.SphericalCoordinates().Colatitude;
var leftAzimuth = leftSite.Position.SphericalCoordinates().Azimuth;
var centralAzimuth = centralSite.Position.SphericalCoordinates().Azimuth;
var rightSite = new SiteEvent(new SphericalCoords(upperColatitude, centralAzimuth + (centralAzimuth - leftAzimuth)).CartesianCoordinates());
// Exercise system
beachline.Insert(leftSite);
beachline.Insert(rightSite);
beachline.Insert(centralSite);
// Verify outcome
var sites = beachline.Select(arc => arc.Site).ToList();
var leftNeighbours = beachline.Select(arc => arc.LeftNeighbour).ToList();
leftNeighbours = leftNeighbours.Skip(1).Concat(leftNeighbours.Take(1)).ToList();
var failureString = String.Format("Beachline was {0}", beachline);
Assert.True(beachline.Count() == 4, failureString);
Assert.True(sites.SequenceEqual(leftNeighbours), failureString);
// Teardown
}
public void Insert_ingThreeSitesIntoTheBeachline_ShouldCreateFourArcsEachWithTheOthersSiteOnTheLeft
(Beachline beachline, SiteEvent site1, SiteEvent site2, SiteEvent site3)
{
// Fixture setup
// Exercise system
beachline.Insert(site1);
beachline.Insert(site2);
beachline.Insert(site3);
Debug.WriteLine(beachline);
// Verify outcome
var sites = beachline.Select(arc => arc.Site).ToList();
var leftNeighbours = beachline.Select(arc => arc.LeftNeighbour).ToList();
leftNeighbours = leftNeighbours.Skip(1).Concat(leftNeighbours.Take(1)).ToList();
var failureString = String.Format("Beachline was {0}", beachline);
Assert.True(beachline.Count() == 4, failureString);
Assert.True(sites.SequenceEqual(leftNeighbours), failureString);
// Teardown
}
public void Remov_ingAZeroLengthArc_ShouldLeaveThreeArcsEachWithTheOthersSiteOnTheLeft
(Beachline beachline, SiteEvent leftSite, SiteEvent centralSite)
{
// Fixture setup
var upperColatitude = leftSite.Position.SphericalCoordinates().Colatitude;
var leftAzimuth = leftSite.Position.SphericalCoordinates().Azimuth;
var centralAzimuth = centralSite.Position.SphericalCoordinates().Azimuth;
var rightSite = new SiteEvent(new SphericalCoords(upperColatitude, centralAzimuth + (centralAzimuth - leftAzimuth)).CartesianCoordinates());
beachline.Insert(leftSite);
beachline.Insert(rightSite);
beachline.Insert(centralSite);
var arcThatWasSplit = beachline.Where(arc1 => beachline.Count(arc2 => arc1.Site == arc2.Site) > 1);
var arcToBeRemoved = arcThatWasSplit.First(arc => arc.Site.Position.Z > beachline.Sweepline.Z);
// Exercise system
Debug.WriteLine(beachline);
Debug.WriteLine(arcToBeRemoved);
beachline.Remove(arcToBeRemoved);
Debug.WriteLine(beachline);
// Verify outcome
var sites = beachline.Select(arc => arc.Site).ToList();
var leftNeighbours = beachline.Select(arc => arc.LeftNeighbour).ToList();
leftNeighbours = leftNeighbours.Skip(1).Concat(leftNeighbours.Take(1)).ToList();
var failureString = String.Format("Beachline was {0}", beachline);
Assert.True(beachline.Count() == 3, failureString);
Assert.True(sites.SequenceEqual(leftNeighbours), failureString);
// Teardown
}
public void Insert_ingTwoSitesIntoTheBeachline_ShouldCreateTwoArcsEachWithTheOthersSiteOnTheLeft
(Beachline beachline, SiteEvent site1, SiteEvent site2)
{
// Fixture setup
// Exercise system
beachline.Insert(site1);
beachline.Insert(site2);
// Verify outcome
var arc1 = beachline.First();
var arc2 = beachline.Last();
var failureString = String.Format("Beachline was {0}", beachline);
Assert.True(beachline.Count() == 2);
Assert.True(arc1.Site == arc2.LeftNeighbour, failureString);
Assert.True(arc2.Site == arc1.LeftNeighbour, failureString);
// Teardown
}