public void Vertices_ShouldAllHaveUnitNorm()
{
// Fixture setup
var icosahedron = IcosahedronFactory.Build();
// Exercise system
var vertices = icosahedron.Vertices;
// Verify outcome
var norms = vertices.Select(vertex => vertex.Position.Norm()).ToArray();
Debug.WriteLine("Norms are " + TestUtilities.CollectionToString(norms));
Assert.True(norms.All(norm => Number.AlmostEqual(norm, 1.0)));
// Teardown
}
public void NumberOfVertexAndEdgeAndFaces_ShouldSatisfyEulersFormula()
{
// Fixture setup
var icosahedron = IcosahedronFactory.Build();
// Exercise system
var v = icosahedron.Vertices.Count;
var e = icosahedron.Edges.Count;
var f = icosahedron.Faces.Count;
// Verify outcome
Debug.WriteLine("Number of vertices: " + v);
Debug.WriteLine("Number of edges: " + e);
Debug.WriteLine("Number of faces: " + f);
Assert.True(v - e + f == 2);
// Teardown
}
public void Edges_ShouldAllHaveTheSameNorm()
{
// Fixture setup
var icosahedron = IcosahedronFactory.Build();
// Exercise system
var edges = icosahedron.Edges;
// Verify outcome
var norms = edges.Select(edge => (edge.A.Position - edge.B.Position).Norm()).ToArray();
var expectedNorm = norms.First();
Debug.WriteLine("Norms are " + TestUtilities.CollectionToString(norms));
Assert.True(norms.All(norm => Number.AlmostEqual(norm, expectedNorm)));
// Teardown
}
