private async Task WriteObj(WavefrontMesh mesh)
{
using var stream = new FileStream(_objFile, FileMode.Create, FileAccess.Write, FileShare.None, 4096, true);
using var writer = new StreamWriter(stream, Encoding.ASCII);
var objDirectory = Path.GetDirectoryName(_objFile);
var mtlRelative = objDirectory != null?Path.GetRelativePath(objDirectory, _mtlFile) : _mtlFile;
await writer.WriteLineAsync($"mtllib {mtlRelative}").ConfigureAwait(false);
foreach (var position in mesh.Positions)
{
await writer.WriteLineAsync($"v {position}").ConfigureAwait(false);
}
foreach (var texCoord in mesh.TexCoords)
{
await writer.WriteLineAsync($"vt {texCoord}").ConfigureAwait(false);
}
foreach (var normal in mesh.Normals)
{
await writer.WriteLineAsync($"vn {normal}").ConfigureAwait(false);
}
foreach (var group in mesh.PrimitiveGroups)
{
await writer.WriteLineAsync($"usemtl material{group.Key}").ConfigureAwait(false);
foreach (var primitive in group.Value)
{
await writer.WriteLineAsync($"{primitive.Category.Command()} {string.Join(' ', primitive.Vertices)}").ConfigureAwait(false);
}
}
}
private static async Task <int> Execute(FileInfo inputFile, FileInfo?outputFile, FileInfo?outputMtl)
{
try
{
var cmodPath = inputFile.FullName;
var objPath = outputFile?.FullName ?? Path.ChangeExtension(outputMtl?.FullName ?? cmodPath, "obj");
var mtlPath = outputMtl?.FullName ?? Path.ChangeExtension(objPath, "mtl");
var model = await LoadModel(cmodPath).ConfigureAwait(false);
var wavefrontMesh = WavefrontMesh.Create(model);
var wavefrontWriter = new WavefrontWriter(objPath, mtlPath);
await wavefrontWriter.Write(wavefrontMesh).ConfigureAwait(false);
Console.WriteLine($"Wrote obj: {objPath}");
Console.WriteLine($"Wrote mtl: {mtlPath}");
return(0);
}
catch (CmodException e)
{
Console.Error.WriteLine($"Failed to read CMOD: {e.Message}");
return(1);
}
catch (Exception e)
{
Console.WriteLine($"An unexpected error occurred: {e.Message}", e);
return(1);
}
}
public Task Write(WavefrontMesh mesh) => Task.WhenAll(WriteMtl(mesh.Materials), WriteObj(mesh));
