public static void poke_test()
{
NTMesh3 mesh = new NTMesh3(TestUtil.LoadTestInputMesh("plane_250v.obj"));
//DMesh3 mesh = TestUtil.LoadTestInputMesh("sphere_bowtie_groups.obj");
mesh.CheckValidity();
int NT = mesh.TriangleCount;
for (int i = 0; i < NT; i += 5)
{
Vector3d n = mesh.GetTriNormal(i);
NTMesh3.PokeTriangleInfo pokeinfo;
MeshResult result = mesh.PokeTriangle(i, out pokeinfo);
Vector3d v = mesh.GetVertex(pokeinfo.new_vid);
v += 0.25f * n;
mesh.SetVertex(pokeinfo.new_vid, v);
mesh.CheckValidity();
}
System.Console.WriteLine("pokes ok");
//TestUtil.WriteTestOutputMesh(mesh, "poke_test_result.obj");
}
public static void split_tests(bool bTestBoundary, int N = 100)
{
System.Console.WriteLine("split_tests() starting");
NTMesh3 mesh = new NTMesh3(TestUtil.MakeCappedCylinder(bTestBoundary));
mesh.CheckValidity(FailMode.DebugAssert);
Random r = new Random(31377);
for (int k = 0; k < N; ++k)
{
int eid = r.Next() % mesh.EdgeCount;
if (!mesh.IsEdge(eid))
{
continue;
}
NTMesh3.EdgeSplitInfo splitInfo;
MeshResult result = mesh.SplitEdge(eid, out splitInfo);
Debug.Assert(result == MeshResult.Ok);
mesh.CheckValidity(FailMode.DebugAssert);
}
System.Console.WriteLine("splits ok");
}
public static void split_tests_nonmanifold(int N = 100)
{
System.Console.WriteLine("split_tests_nonmanifold() starting");
Random r = new Random(31337);
NTMesh3 mesh = new NTMesh3();
int a = mesh.AppendVertex(Vector3d.Zero);
int b = mesh.AppendVertex(Vector3d.AxisZ);
for (int k = 0; k < 5; ++k)
{
int c = mesh.AppendVertex(TestUtil.RandomPoints3(1, r, Vector3d.Zero, 1)[0]);
int tid = mesh.AppendTriangle(new Index3i(a, b, c));
Debug.Assert(tid >= 0);
}
TestUtil.WriteTestOutputMesh(mesh.Deconstruct(), "nonmanifold_split_input.obj");
for (int k = 0; k < N; ++k)
{
int eid = r.Next() % mesh.EdgeCount;
if (!mesh.IsEdge(eid))
{
continue;
}
NTMesh3.EdgeSplitInfo splitInfo;
MeshResult result = mesh.SplitEdge(eid, out splitInfo);
Debug.Assert(result == MeshResult.Ok);
mesh.CheckValidity(FailMode.DebugAssert);
}
TestUtil.WriteTestOutputMesh(mesh.Deconstruct(), "nonmanifold_split_output.obj");
}
public static void basic_tests()
{
System.Console.WriteLine("DMesh3:basic_tests() starting");
CappedCylinderGenerator cylgen = new CappedCylinderGenerator();
cylgen.Generate();
NTMesh3 tmp = cylgen.MakeNTMesh();
tmp.CheckValidity();
System.Console.WriteLine("cylinder ok");
}
public static void test_remove()
{
System.Console.WriteLine("DMesh3:test_remove() starting");
List <NTMesh3> testMeshes = new List <NTMesh3>()
{
new CappedCylinderGenerator().Generate().MakeNTMesh()
};
// remove-one tests
foreach (NTMesh3 mesh in testMeshes)
{
int N = mesh.TriangleCount;
for (int j = 0; j < N; ++j)
{
NTMesh3 r1 = new NTMesh3(mesh);
r1.RemoveTriangle(j, false);
r1.CheckValidity(); // remove might create non-manifold tris at bdry
NTMesh3 r2 = new NTMesh3(mesh);
r2.RemoveTriangle(j, true);
r2.CheckValidity();
NTMesh3 r3 = new NTMesh3(mesh);
r3.RemoveTriangle(j, false);
r3.CheckValidity(); // remove might create non-manifold tris at bdry
NTMesh3 r4 = new NTMesh3(mesh);
r4.RemoveTriangle(j, true);
r4.CheckValidity();
}
}
// grinder tests
foreach (NTMesh3 mesh in testMeshes)
{
// sequential
NTMesh3 tmp = new NTMesh3(mesh);
bool bDone = false;
while (!bDone)
{
bDone = true;
foreach (int ti in tmp.TriangleIndices())
{
if (tmp.IsTriangle(ti) && tmp.RemoveTriangle(ti, true) == MeshResult.Ok)
{
bDone = false;
tmp.CheckValidity();
}
}
}
System.Console.WriteLine(string.Format("remove_all sequential: before {0} after {1}", mesh.TriangleCount, tmp.TriangleCount));
// randomized
tmp = new NTMesh3(mesh);
bDone = false;
while (!bDone)
{
bDone = true;
foreach (int ti in tmp.TriangleIndices())
{
int uset = (ti + 256) % tmp.MaxTriangleID; // break symmetry
if (tmp.IsTriangle(uset) && tmp.RemoveTriangle(uset, true) == MeshResult.Ok)
{
bDone = false;
tmp.CheckValidity();
}
}
}
System.Console.WriteLine(string.Format("remove_all randomized: before {0} after {1}", mesh.TriangleCount, tmp.TriangleCount));
}
System.Console.WriteLine("remove ok");
}