/// <summary>
/// Constructs a table of the area of intersection between each face and the vertices around it.
/// </summary>
public static double[][] AreaInEachVertex(IPolyhedron surface)
{
var allAreas = new double[surface.Faces.Count][];
foreach (var face in surface.Faces)
{
var vertices = face.Vertices;
var areas = vertices.Select(vertex => PolyhedronUtilities.AreaSharedByVertexAndFace(surface, vertex, face)).ToArray();
allAreas[surface.IndexOf(face)] = areas;
}
return(allAreas);
}
public void AreaSharedByVertexAndFace_OnACube_ShouldProduceTheCorrectValues
(IPolyhedron polyhedron)
{
// Fixture setup
var vertices = polyhedron.Vertices;
var faces = polyhedron.Faces;
var expected = Enumerable.Repeat(1.0, 24).Concat(Enumerable.Repeat(0.0, 24)).ToList();
// Exercise system
var actual = vertices.SelectMany(vertex => faces.Select(face => PolyhedronUtilities.AreaSharedByVertexAndFace(polyhedron, vertex, face))).ToList();
// Verify outcome
TestUtilities.WriteExpectedAndActual(expected, actual);
Assert.True(TestUtilities.UnorderedEquals(expected, actual));
// Teardown
}
