public void GetHorizontalFace_returns_face_with_correct_Edges_directed_counterclockwise_in_counterclockwise_order
([Values(VerticalPrismalSurface.BaseSide.Bottom, VerticalPrismalSurface.BaseSide.Top)] VerticalPrismalSurface.BaseSide side,
[Values(false, true)] bool isOrientedOutside)
{
var surface = CreateSurface(isClosedBase: true, isClosedSurface: true, isCounterclockwise: isOrientedOutside);
Expect(surface.Order, Is.EqualTo(5)); // internal sanity
var v1 = surface.GetVertex(index: 0, baseSide: side);
var v2 = surface.GetVertex(index: 1, baseSide: side);
var v3 = surface.GetVertex(index: 2, baseSide: side);
var v4 = surface.GetVertex(index: 3, baseSide: side);
var v5 = surface.GetVertex(index: 4, baseSide: side);
var e1 = surface.GetEdge(v1, v2);
var e2 = surface.GetEdge(v2, v3);
var e3 = surface.GetEdge(v3, v4);
var e4 = surface.GetEdge(v4, v5);
var e5 = surface.GetEdge(v5, v1);
var edges = new List <IPolysurfaceEdge> {
e1, e2, e3, e4, e5
};
if (side == VerticalPrismalSurface.BaseSide.Bottom)
{
edges = edges.Select(e => e.Reversed).Reverse().ToList();
}
var face = surface.GetHorizontalFace(side);
ExpectListsAreEqualUpToCyclicPermuation(face.Edges.ToReadOnlyList(), edges.ToReadOnlyList());
}
public void Horizontal_edge_has_correct_LeftFace_and_RightFace
([Values(false, true)] bool isClosedSurface,
[Values(false, true)] bool isForwardEdge,
[Values(VerticalPrismalSurface.BaseSide.Bottom, VerticalPrismalSurface.BaseSide.Top)] VerticalPrismalSurface.BaseSide side)
{
var surface = CreateSurface(isClosedBase: true, isClosedSurface: isClosedSurface);
var v1 = surface.GetVertex(2, side);
var v2 = surface.GetVertex(3, side);
var edge = isForwardEdge ? surface.GetEdge(v1, v2) : surface.GetEdge(v2, v1);
var leftFace = edge.LeftFace;
var rightFace = edge.RightFace;
if (isClosedSurface)
{
Expect(leftFace, Is.Not.Null);
Expect(rightFace, Is.Not.Null);
}
else
{
Expect(leftFace == null ^ rightFace == null);
}
if (leftFace != null)
{
Expect(leftFace.Edges, Has.Exactly(1).EqualTo(edge));
}
if (rightFace != null)
{
Expect(rightFace.Edges, Has.Exactly(1).EqualTo(edge.Reversed));
}
}
