public static void ExportMesh(string path, Mesh mesh)
{
var facets = DeconstructMesh(mesh);
var bytes = BinaryStl.ToBytes(facets);
File.WriteAllBytes(path, bytes);
}
public static async Task <(Mesh mesh, string fileHash)> ImportMeshAsync(
string fileName,
byte[] fileBytes,
bool centerVertices = true,
bool computeHash = true)
{
if (fileBytes.Length < 112)
{
throw new InvalidDataException($"File `{fileName}` is too small to be any kind of valid STL.");
}
var isBinary = BinaryStl.IsBinary(fileBytes);
Task <string> ComputeHash()
{
return(computeHash
? Task.Run(() => StlImporter.ComputeHash(fileBytes))
.Timed("Computing hash of {0}", fileName)
: Task.FromResult((string)null));
}
Facet[] facets;
Task <string> computeHashTask;
if (isBinary)
{
computeHashTask = ComputeHash();
facets = await Task.Run(() => BinaryStl.FromBytes(fileBytes))
.Timed("Reading binary stl {0}", fileName);
}
else
{
facets = await Task.Run(() => TextualStl.Import(fileBytes, out _).ToArray())
.Timed("Reading textual stl {0}", fileName);
var convertToBinary = Task.Run(() => fileBytes = BinaryStl.ToBytes(facets))
.Timed("Converting {0} to binary stl", fileName);
computeHashTask = Task.Run(async() =>
{
await convertToBinary;
return(await ComputeHash());
});
}
var mesh = await CreateMeshFromFacetsAsync(facets, centerVertices, fileName);
return(mesh, await computeHashTask);
}