public IOWriteResult Write(BinaryWriter writer, List <WriteMesh> vMeshes, WriteOptions options)
{
string header = "g3sharp_stl ";
byte[] header_bytes = ASCIIEncoding.ASCII.GetBytes(header);
byte[] stl_header = new byte[80];
Array.Clear(stl_header, 0, stl_header.Length);
Array.Copy(header_bytes, stl_header, header_bytes.Length);
writer.Write(stl_header);
int total_tris = 0;
foreach (WriteMesh mesh in vMeshes)
{
total_tris += mesh.Mesh.TriangleCount;
}
writer.Write(total_tris);
for (int mi = 0; mi < vMeshes.Count; ++mi)
{
IMesh mesh = vMeshes[mi].Mesh;
if (options.ProgressFunc != null)
{
options.ProgressFunc(mi, vMeshes.Count - 1);
}
Func <int, stl_triangle> producerF = (ti) =>
{
var tri = new stl_triangle();
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);
tri.nx = (float)n.x; tri.ny = (float)n.y; tri.nz = (float)n.z;
tri.ax = (float)a.x; tri.ay = (float)a.y; tri.az = (float)a.z;
tri.bx = (float)b.x; tri.by = (float)b.y; tri.bz = (float)b.z;
tri.cx = (float)c.x; tri.cy = (float)c.y; tri.cz = (float)c.z;
tri.attrib = 0;
return(tri);
};
Action <stl_triangle> consumerF = (tri) =>
{
byte[] tri_bytes = Util.StructureToByteArray(tri);
writer.Write(tri_bytes);
};
var stream = new ParallelStream <int, stl_triangle>();
stream.ProducerF = producerF;
stream.ConsumerF = consumerF;
// parallel version is slower =\
//stream.Run_Thread(mesh.TriangleIndices());
stream.Run(mesh.TriangleIndices());
}
return(new IOWriteResult(IOCode.Ok, ""));
}
public IOReadResult Read(BinaryReader reader, ReadOptions options, IMeshBuilder builder)
{
if (options.CustomFlags != null)
{
ParseArguments(options.CustomFlags);
}
/*byte[] header = */
reader.ReadBytes(80);
int totalTris = reader.ReadInt32();
Objects = new List <STLSolid>();
Objects.Add(new STLSolid());
int tri_size = 50; // bytes
IntPtr bufptr = Marshal.AllocHGlobal(tri_size);
var tmp = new stl_triangle();
Type tri_type = tmp.GetType();
var tri_attribs = new DVector <short>();
try
{
for (int i = 0; i < totalTris; ++i)
{
byte[] tri_bytes = reader.ReadBytes(50);
if (tri_bytes.Length < 50)
{
break;
}
Marshal.Copy(tri_bytes, 0, bufptr, tri_size);
var tri = (stl_triangle)Marshal.PtrToStructure(bufptr, tri_type);
append_vertex(tri.ax, tri.ay, tri.az);
append_vertex(tri.bx, tri.by, tri.bz);
append_vertex(tri.cx, tri.cy, tri.cz);
tri_attribs.Add(tri.attrib);
}
}
catch (Exception e)
{
return(new IOReadResult(IOCode.GenericReaderError, "exception: " + e.Message));
}
Marshal.FreeHGlobal(bufptr);
if (Objects.Count == 1)
{
Objects[0].TriAttribs = tri_attribs;
}
foreach (STLSolid solid in Objects)
{
BuildMesh(solid, builder);
}
return(new IOReadResult(IOCode.Ok, ""));
}
public IOReadResult Read(BinaryReader reader, ReadOptions options, IMeshBuilder builder)
{
/*byte[] header = */ reader.ReadBytes(80);
int totalTris = reader.ReadInt32();
Objects = new List <STLSolid>();
Objects.Add(new STLSolid());
int tri_size = 50; // bytes
IntPtr bufptr = Marshal.AllocHGlobal(tri_size);
stl_triangle tmp = new stl_triangle();
Type tri_type = tmp.GetType();
try {
for (int i = 0; i < totalTris; ++i)
{
byte[] tri_bytes = reader.ReadBytes(50);
Marshal.Copy(tri_bytes, 0, bufptr, tri_size);
stl_triangle tri = (stl_triangle)Marshal.PtrToStructure(bufptr, tri_type);
append_vertex(tri.ax, tri.ay, tri.az);
append_vertex(tri.bx, tri.by, tri.bz);
append_vertex(tri.cx, tri.cy, tri.cz);
}
} catch (Exception e) {
return(new IOReadResult(IOCode.GenericReaderError, "exception: " + e.Message));
}
Marshal.FreeHGlobal(bufptr);
foreach (STLSolid solid in Objects)
{
BuildMesh(solid, builder);
}
return(new IOReadResult(IOCode.Ok, ""));
}
