public static void test_mesh_builder_104()
{
var vertices = new List <Vector3f>
{
new Vector3f(0, 0, 0), // 0
new Vector3f(1000, 0, 0), // 1
new Vector3f(1000, 200, 0), // 2
new Vector3f(0, 200, 0), // 3
new Vector3f(1000, 0, 200), // 4
new Vector3f(0, 0, 200), // 5
new Vector3f(1000, 0, -200), // 6
new Vector3f(0, 0, -200), // 7
new Vector3f(1000, -200, 0), // 8
new Vector3f(0, -200, 0) // 9
};
var triangles = new List <Index3i>
{
new Index3i(0, 1, 2),
new Index3i(0, 2, 3),
new Index3i(0, 4, 1),
new Index3i(0, 5, 4),
new Index3i(0, 1, 6), // Does not show
new Index3i(0, 6, 7),
new Index3i(0, 8, 1), // Does not show
new Index3i(0, 9, 8)
};
var mesh = DMesh3Builder.Build <Vector3f, Index3i, Vector3f>(vertices, triangles);
Console.WriteLine($"Number of triangles: {mesh.TriangleCount}"); // Outputs 6, because mesh is not manifold
Console.WriteLine($"Vertex Issues: {mesh.FindMetadata("AppendVertexIssues")}");
Console.WriteLine($"Triangle Issues: {mesh.FindMetadata("AppendTriangleIssues")}");
// for greater control of the meshing process use DMesh3Builder class
Console.WriteLine("Trying again with DMesh3Builder instance");
DMesh3Builder builder = new DMesh3Builder();
builder.NonManifoldTriBehavior = DMesh3Builder.AddTriangleFailBehaviors.DuplicateAllVertices;
mesh = builder.AppendMesh <Vector3f, Index3i, Vector3f>(vertices, triangles);
Console.WriteLine($"Number of triangles: {mesh.TriangleCount}"); // Outputs 8, because non manifold is allowed
Console.WriteLine($"Triangle Issues: {mesh.FindMetadata("AppendTriangleIssues")}");
Console.WriteLine($"Normals: {mesh.FindMetadata("Normals")}");
Console.WriteLine($"TriGroups: {mesh.FindMetadata("TriGroups")}");
var outF = TestUtil.WriteTestOutputMesh(mesh, "Issue104.obj");
Console.WriteLine($"Written to: {outF}");
}
