public static HittableGeometryComponent ReadObj(FileInfo file)
{
var reader = new OBJReader();
var builder = new SimpleMeshBuilder();
using (var text = new StreamReader(File.OpenRead(file.FullName))) {
var result = reader.Read(text, ReadOptions.Defaults, builder);
}
//var reader = new StandardMeshReader();
//var res = reader.Read(file.FullName, ReadOptions.Defaults);
//StandardMeshReader.ReadMesh()
var mesh = builder.Meshes[0];
return(new HittableGeometryComponent {
Indices = mesh.GetTriangleArray().ToImmutableArray(),
Normals = mesh.NormalsItr().Select(n => new Vector3(n.x, n.y, n.z)).ToImmutableArray(),
Positions = mesh.VerticesItr().Select(n => new Vector3((float)n.x, (float)n.y, (float)n.z)).ToImmutableArray(),
});
}
private async Task <SimpleMeshBuilder> loadObj(string filename)
{
using (StreamReader reader = File.OpenText(filename))
{
OBJReader objReader = new OBJReader();
SimpleMeshBuilder meshBuilder = new SimpleMeshBuilder();
try
{
IOReadResult result = objReader.Read(reader, new ReadOptions(), meshBuilder);
}
catch (Exception e) when(
e is UnauthorizedAccessException ||
e is DirectoryNotFoundException ||
e is FileNotFoundException ||
e is NotSupportedException
)
{
Debug.LogError("Failed to Load" + filename + " : " + e.ToString());
meshBuilder = new SimpleMeshBuilder();
}
return(meshBuilder);
}
}