public IOWriteResult Write(TextWriter writer, List <WriteMesh> vMeshes, WriteOptions options)
{
if (options.bCombineMeshes == true)
{
writer.WriteLine("solid \"mesh\"");
}
string three_floats = Util.MakeVec3FormatString(0, 1, 2, options.RealPrecisionDigits);
for (int mi = 0; mi < vMeshes.Count; ++mi)
{
IMesh mesh = vMeshes[mi].Mesh;
if (options.ProgressFunc != null)
{
options.ProgressFunc(mi, vMeshes.Count - 1);
}
string solid_name = string.Format("mesh_{0}", mi);
if (options.bCombineMeshes == false)
{
if (vMeshes[mi].Name != null && vMeshes[mi].Name.Length > 0)
{
solid_name = vMeshes[mi].Name;
}
writer.WriteLine("solid \"{0}\"", solid_name);
}
foreach (int ti in mesh.TriangleIndices())
{
Index3i t = mesh.GetTriangle(ti);
Vector3d a = mesh.GetVertex(t.a), b = mesh.GetVertex(t.b), c = mesh.GetVertex(t.c);
Vector3d n = MathUtil.Normal(a, b, c);
writer.WriteLine("facet normal " + three_floats, n.x, n.y, n.z);
writer.WriteLine("outer loop" + writer.NewLine + "vertex " + three_floats, a.x, a.y, a.z);
writer.WriteLine("vertex " + three_floats, b.x, b.y, b.z);
writer.WriteLine("vertex " + three_floats, c.x, c.y, c.z);
writer.WriteLine("endloop" + writer.NewLine + "endfacet");
}
if (options.bCombineMeshes == false)
{
writer.WriteLine("endsolid \"{0}\"", solid_name);
}
}
if (options.bCombineMeshes == true)
{
writer.WriteLine("endsolid \"mesh\"");
}
return(new IOWriteResult(IOCode.Ok, ""));
}
public IOWriteResult Write(TextWriter writer, List <WriteMesh> vMeshes, WriteOptions options)
{
int N = vMeshes.Count;
writer.WriteLine("OFF");
string three_floats = Util.MakeVec3FormatString(0, 1, 2, options.RealPrecisionDigits);
int nTotalV = 0, nTotalT = 0, nTotalE = 0;
// OFF only supports one mesh, so have to collapse all input meshes
// into a single list, with mapping for triangles
// [TODO] can skip this if input is a single mesh!
int[][] mapV = new int[N][];
for (int mi = 0; mi < N; ++mi)
{
nTotalV += vMeshes[mi].Mesh.VertexCount;
nTotalT += vMeshes[mi].Mesh.TriangleCount;
nTotalE += 0;
mapV[mi] = new int[vMeshes[mi].Mesh.MaxVertexID];
}
writer.WriteLine(string.Format("{0} {1} {2}", nTotalV, nTotalT, nTotalE));
// write all vertices, and construct vertex re-map
int vi = 0;
for (int mi = 0; mi < N; ++mi)
{
IMesh mesh = vMeshes[mi].Mesh;
if (options.ProgressFunc != null)
{
options.ProgressFunc(mi, 2 * (N - 1));
}
foreach (int vid in mesh.VertexIndices())
{
Vector3d v = mesh.GetVertex(vid);
writer.WriteLine(three_floats, v.x, v.y, v.z);
mapV[mi][vid] = vi;
vi++;
}
}
// write all triangles
for (int mi = 0; mi < N; ++mi)
{
IMesh mesh = vMeshes[mi].Mesh;
if (options.ProgressFunc != null)
{
options.ProgressFunc(N + mi, 2 * (N - 1));
}
foreach (int ti in mesh.TriangleIndices())
{
Index3i t = mesh.GetTriangle(ti);
t[0] = mapV[mi][t[0]];
t[1] = mapV[mi][t[1]];
t[2] = mapV[mi][t[2]];
writer.WriteLine(string.Format("3 {0} {1} {2}", t[0], t[1], t[2]));
}
}
return(new IOWriteResult(IOCode.Ok, ""));
}