public void Surface_Equal_False_ForOneVsTwoTriangles()
{
// ARRANGE
ListSurface s1 = new ListSurface();
s1.AddVertex(new Vector3(0, 0, 0));
s1.AddVertex(new Vector3(1, 0, 0));
s1.AddVertex(new Vector3(1, 1, 0));
s1.AddTriangle(0, 1, 2);
ListSurface s2 = new ListSurface();
s2.AddVertex(new Vector3(0, 0, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(0, 1, 0));
s2.AddVertex(new Vector3(0, 0, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(1, 1, 0));
s2.AddTriangle(0, 1, 2);
s2.AddTriangle(3, 4, 5);
// ACT
bool areEqual = ListSurface.AreSurfacesEquivalent(s1, s2);
// ASSERT
Assert.IsFalse(areEqual);
}
public void Surface_Equal_True_ForTwoTriangles_SharedVertices2()
{
// ARRANGE
ListSurface s1 = new ListSurface();
s1.AddVertex(new Vector3(0, 0, 0));
s1.AddVertex(new Vector3(1, 0, 0));
s1.AddVertex(new Vector3(0, 1, 0));
s1.AddVertex(new Vector3(1, 1, 0));
s1.AddTriangle(0, 1, 2);
s1.AddTriangle(0, 1, 3);
ListSurface s2 = new ListSurface();
s2.AddVertex(new Vector3(0, 0, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(0, 1, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(1, 1, 0));
s2.AddTriangle(0, 1, 2);
s2.AddTriangle(0, 3, 4);
// ACT
bool areEqual = ListSurface.AreSurfacesEquivalent(s1, s2);
// ASSERT
Assert.IsTrue(areEqual);
}
public void Surface_IsClosed_False_ForSingleTriangle()
{
// ARRANGE
ListSurface s = new ListSurface();
s.AddVertex(0, 0, 0);
s.AddVertex(0, 1, 0);
s.AddVertex(1, 0, 0);
s.AddTriangle(0, 1, 2);
// ACT
bool isClosed = s.IsClosed();
// ASSERT
Assert.IsFalse(isClosed);
}
public void Surface_IsClosed_True_ForBackToBackTriangles()
{
// ARRANGE
ListSurface s = new ListSurface();
s.AddVertex(0, 0, 0);
s.AddVertex(0, 1, 0);
s.AddVertex(1, 0, 0);
s.AddTriangle(0, 1, 2);
s.AddTriangle(0, 2, 1);
// ACT
bool isClosed = s.IsClosed();
// ASSERT
Assert.IsTrue(isClosed);
}
public void GridGenerateSurface_SingleValue1_OtherValueMinus1_Iso0_GeneratesCorrectTriangle()
{
// ARRANGE
ArrayGrid grid = GenerateSingle(1, -1, 0);
ListSurface expected = new ListSurface();
expected.AddVertex(new Vector3(0.5f, 0, 0));
expected.AddVertex(new Vector3(0, 0.5f, 0));
expected.AddVertex(new Vector3(0, 0, 0.5f));
expected.AddTriangle(0, 1, 2);
// ACT
ListSurface s = new ListSurface();
MarchingCubes.MarchIntoSurface(grid, 0, s);
bool areEqual = ListSurface.AreSurfacesEquivalent(expected, s);
// ASSERT
Assert.IsTrue(areEqual);
}
public void Surface_Equal_FalseForDifferentWindingsTriangle3()
{
// ARRANGE
ListSurface s1 = new ListSurface();
s1.AddVertex(new Vector3(0, 0, 0));
s1.AddVertex(new Vector3(1, 0, 0));
s1.AddVertex(new Vector3(0, 1, 0));
s1.AddTriangle(0, 1, 2);
ListSurface s2 = new ListSurface();
s2.AddVertex(new Vector3(0, 0, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(0, 1, 0));
s2.AddTriangle(1, 0, 2);
// ACT
bool areEqual = ListSurface.AreSurfacesEquivalent(s1, s2);
// ASSERT
Assert.IsFalse(areEqual);
}
public void Surface_Equal_TrueForSameWindingsTriangle2()
{
// ARRANGE
ListSurface s1 = new ListSurface();
s1.AddVertex(new Vector3(0, 0, 0));
s1.AddVertex(new Vector3(1, 0, 0));
s1.AddVertex(new Vector3(0, 1, 0));
s1.AddTriangle(0, 1, 2);
ListSurface s2 = new ListSurface();
s2.AddVertex(new Vector3(0, 0, 0));
s2.AddVertex(new Vector3(1, 0, 0));
s2.AddVertex(new Vector3(0, 1, 0));
s2.AddTriangle(2, 0, 1);
// ACT
bool areEqual = ListSurface.AreSurfacesEquivalent(s1, s2);
// ASSERT
Assert.IsTrue(areEqual);
}
private static void JoinInto(ListSurface into, ListSurface from)
{
int offset = into.GetVertexCount();
foreach (Vector3 vertex in from.GetVertices())
{
into.AddVertex(vertex);
}
int[] triangles = from.GetTriangles();
for (int i = 0; i < triangles.Length; i += 3)
{
into.AddTriangle(triangles[i] + offset,
triangles[i + 1] + offset,
triangles[i + 2] + offset);
}
}
private static ListSurface GenSurfaceFromEdges(List <Vector3> vertices, List <Tuple <int, int> > edges)
{
ListSurface surface = new ListSurface();
foreach (Vector3 vertex in vertices)
{
surface.AddVertex(vertex);
}
List <Tuple <int, int, int> > triangles = GenTrianglesFromEdges(edges);
foreach (Tuple <int, int, int> triangle in triangles)
{
surface.AddTriangle(triangle.Item1, triangle.Item2, triangle.Item3);
}
return(surface);
}