//
// DMesh3 construction utilities
//
/// <summary>
/// ultimate generic mesh-builder, pass it arrays of floats/doubles, or lists
/// of Vector3d, or anything in-between. Will figure out how to interpret
/// </summary>
public static NGonsCore.geometry3Sharp.mesh.DMesh3 Build <VType, TType, NType>(IEnumerable <VType> Vertices,
IEnumerable <TType> Triangles,
IEnumerable <NType> Normals = null,
IEnumerable <int> TriGroups = null)
{
NGonsCore.geometry3Sharp.mesh.DMesh3 mesh = new NGonsCore.geometry3Sharp.mesh.DMesh3(Normals != null, false, false, TriGroups != null);
Vector3D[] v = BufferUtil.ToVector3d(Vertices);
for (int i = 0; i < v.Length; ++i)
{
mesh.AppendVertex(v[i]);
}
if (Normals != null)
{
Vector3F[] n = BufferUtil.ToVector3f(Normals);
if (n.Length != v.Length)
{
throw new Exception("DMesh3Builder.Build: incorrect number of normals provided");
}
for (int i = 0; i < n.Length; ++i)
{
mesh.SetVertexNormal(i, n[i]);
}
}
Index3i[] t = BufferUtil.ToIndex3i(Triangles);
for (int i = 0; i < t.Length; ++i)
{
mesh.AppendTriangle(t[i]);
}
if (TriGroups != null)
{
List <int> groups = new List <int>(TriGroups);
if (groups.Count != t.Length)
{
throw new Exception("DMesh3Builder.Build: incorect number of triangle groups");
}
for (int i = 0; i < t.Length; ++i)
{
mesh.SetTriangleGroup(i, groups[i]);
}
}
return(mesh);
}