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);
}
public static bool TestSpecific(float[,,] cells, ListSurface expected)
{
return(TestSpecific(cells, new List <ListSurface>()
{
expected
}));
}
public void Surface_IsClosed_True_ForEmptySurface()
{
// ARRANGE
ListSurface s = new ListSurface();
// ACT
bool isClosed = s.IsClosed();
// ASSERT
Assert.IsTrue(isClosed);
}
private void TestDoesntCrash(int a, int b, int c, int d, int e, int f, int g, int h)
{
// ARRANGE
float[,,] cells = new float[, , ] {
{ { a, b }, { c, d } },
{ { e, f }, { g, h } }
};
ArrayGrid grid = new ArrayGrid(cells, Vector3.Zero, Vector3.One);
ListSurface s = new ListSurface();
// ACT & ASSERT
Assert.DoesNotThrow(() => MarchingCubes.MarchIntoSurface(grid, 0, s));
}
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);
}
/// <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);
}
private void UniformTest(float value, int width, float iso)
{
// ARRANGE
ArrayGrid grid = GenerateUniform(value, width);
// ACT
ListSurface s = new ListSurface();
MarchingCubes.MarchIntoSurface(grid, iso, s);
int[] triangles = s.GetTriangles();
Vector3[] vertices = s.GetVertices();
// ASSERT
Assert.That(triangles, Has.Length.EqualTo(0));
Assert.That(vertices, Has.Length.EqualTo(0));
}
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);
}
private void SingleNodeCellTest(float valueSingle, float valueOther, int cellVertex, float iso)
{
// ARRANGE
ArrayGrid grid = GenerateSingle(valueSingle, valueOther, cellVertex);
// ACT
ListSurface s = new ListSurface();
MarchingCubes.MarchIntoSurface(grid, iso, s);
int[] triangles = s.GetTriangles();
Vector3[] vertices = s.GetVertices();
// ASSERT
// Should have one triangle with three vertices
Assert.That(triangles, Has.Length.EqualTo(3));
Assert.That(vertices, Has.Length.EqualTo(3));
}
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);
}
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 static List <ListSurface> AddAllTriangulations(IEnumerable <ListSurface> surfaces, List <Vector3> polygon)
{
List <ListSurface> triangulations = GenAllTriangulations(polygon);
List <ListSurface> newSurfaces = new List <ListSurface>();
foreach (ListSurface oldSurface in surfaces)
{
int offset = oldSurface.GetVertexCount();
foreach (ListSurface triangulation in triangulations)
{
ListSurface newSurface = new ListSurface();
JoinInto(newSurface, oldSurface);
JoinInto(newSurface, triangulation);
newSurfaces.Add(newSurface);
}
}
return(newSurfaces);
}
private void TestClosed(int a, int b, int c, int d, int e, int f, int g, int h)
{
// ARRANGE
float[,,] cells = new float[, , ] {
{ { -1, -1, -1, -1 }, { -1, -1, -1, -1 }, { -1, -1, -1, -1 }, { -1, -1, -1, -1 } },
{ { -1, -1, -1, -1 }, { -1, a, b, -1 }, { -1, c, d, -1 }, { -1, -1, -1, -1 } },
{ { -2, -2, -2, -2 }, { -2, e, f, -2 }, { -2, g, h, -2 }, { -2, -2, -2, -2 } },
{ { -2, -2, -2, -2 }, { -2, -2, -2, -2 }, { -2, -2, -2, -2 }, { -2, -2, -2, -2 } },
};
// ACT
ArrayGrid grid = new ArrayGrid(cells, Vector3.Zero, Vector3.One);
ListSurface s = new ListSurface();
MarchingCubes.MarchIntoSurface(grid, 0, s);
bool isClosed = s.IsClosed();
// ASSERT
Assert.IsTrue(isClosed);
}
public void Surface_TrianglesEqual_FalseForOppositeWindings1()
{
// ARRANGE
Vector3[] t1 = new Vector3[]
{
new Vector3(0, 0, 0),
new Vector3(1, 0, 0),
new Vector3(0, 1, 0),
};
Vector3[] t2 = new Vector3[]
{
new Vector3(0, 0, 0),
new Vector3(0, 1, 0),
new Vector3(1, 0, 0),
};
// ACT
bool areEqual = ListSurface.AreTrianglesEqual(t1, t2);
// 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);
}
public void Surface_TrianglesEqual_TrueForSameTriangles()
{
// ARRANGE
Vector3[] t1 = new Vector3[]
{
new Vector3(0, 0, 0),
new Vector3(1, 0, 0),
new Vector3(0, 1, 0),
};
Vector3[] t2 = new Vector3[]
{
new Vector3(0, 0, 0),
new Vector3(1, 0, 0),
new Vector3(0, 1, 0),
};
// ACT
bool areEqual = ListSurface.AreTrianglesEqual(t1, t2);
// 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);
}
/// <summary>
/// Получение дорожного покрытия по названию
/// </summary>
/// <param name="name">Название</param>
/// <returns>Дорожное покрытие</returns>
public static Coating GetCoatingByName(string name)
{
List <object> coat = ListSurface.First(coating => coating[0].ToString().Equals(name));
return(CreateCoating(coat[0].ToString(), double.Parse(coat[1].ToString())));
}
