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_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);
}
/// <summary>
/// Tests a specific example of a cell. Assumes that delta in the grid is 1, origin is 0 and isovalue is 0
/// </summary>
public static bool TestSpecific(float[,,] cells, IEnumerable <ListSurface> expecteds)
{
ArrayGrid grid = new ArrayGrid(cells, Vector3.Zero, Vector3.One);
ListSurface s = new ListSurface();
MarchingCubes.MarchIntoSurface(grid, 0, s);
foreach (ListSurface e in expecteds)
{
if (ListSurface.AreSurfacesEquivalent(e, s))
{
return(true);
}
}
return(false);
}
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);
}