/// <summary>
/// vrm1 をパースする。vrm0 からのマイグレートもできる。
/// </summary>
/// <param name="path"></param>
/// <param name="bytes"></param>
/// <param name="doMigrate"></param>
/// <param name="vrm1Data">成功した場合非 null</param>
/// <param name="migration">doMigrate==true の場合、関連情報が入る</param>
/// <returns>GltfDataを作成できたときは Return するのでDisposeすること</returns>
public static GltfData ParseOrMigrate(string path, byte[] bytes, bool doMigrate, out Vrm10Data vrm1Data, out MigrationData migration)
{
var data = new GlbLowLevelParser(path, bytes).Parse();
byte[] migrated = default;
byte[] migratedBytes = null;
Migration.Vrm0Meta oldMeta = default;
try
{
if (UniGLTF.Extensions.VRMC_vrm.GltfDeserializer.TryGet(data.GLTF.extensions, out UniGLTF.Extensions.VRMC_vrm.VRMC_vrm vrm))
{
// success
vrm1Data = new Vrm10Data(data, vrm);
migration = default;
return(data);
}
if (!doMigrate)
{
vrm1Data = default;
migration = new MigrationData("Not vrm1 and no migration");
return(data);
}
// try migrateion
// Migration.Vrm0Meta oldMeta = default;
JsonNode json = data.Json.ParseAsJson();
if (!json.TryGet("extensions", out JsonNode extensions))
{
vrm1Data = default;
migration = new MigrationData("gltf: no extensions");
return(data);
}
if (!extensions.TryGet("VRM", out JsonNode vrm0))
{
vrm1Data = default;
migration = new MigrationData("gltf: no vrm0");
return(data);
}
// found vrm0
oldMeta = Migration.Vrm0Meta.FromJsonBytes(json);
if (oldMeta == null)
{
throw new NullReferenceException("oldMeta");
}
// try migrate...
migrated = MigrationVrm.Migrate(data);
if (migrated == null)
{
vrm1Data = default;
migration = new MigrationData("Found vrm0. But fail to migrate", oldMeta);
return(data);
}
if (VRMShaders.Symbols.VRM_DEVELOP)
{
// load 時の右手左手座標変換でバッファが破壊的変更されるので、コピーを作っている
migratedBytes = migrated.Select(x => x).ToArray();
}
}
catch (Exception ex)
{
// 何か起きた。Dispose は頼む
vrm1Data = default;
migration = new MigrationData(ex.Message);
return(data);
}
// マイグレーション前を破棄
data.Dispose();
// マイグレーション結果をパースする
var migratedData = new GlbLowLevelParser(data.TargetPath, migrated).Parse();
try
{
if (!UniGLTF.Extensions.VRMC_vrm.GltfDeserializer.TryGet(migratedData.GLTF.extensions, out VRMC_vrm vrm))
{
// migration した結果のパースに失敗した !
vrm1Data = default;
migration = new MigrationData("vrm0: migrate but error ?", oldMeta, migrated);
return(migratedData);
}
{
// success
vrm1Data = new Vrm10Data(migratedData, vrm);
migration = new MigrationData("vrm0: migrated", oldMeta, migratedBytes);
return(migratedData);
}
}
catch (Exception ex)
{
// 何か起きた。Dispose は頼む
vrm1Data = default;
migration = new MigrationData(ex.Message);
return(migratedData);
}
}
/// <summary>
///
/// </summary>
/// <param name="data"></param>
/// <param name="vrm1Data"></param>
/// <param name="migration"></param>
/// <returns>Migrated GltfData if succeeded. Must Dispose</returns>
public static GltfData Migrate(GltfData data, out Vrm10Data vrm1Data, out MigrationData migration)
{
var json = data.Json.ParseAsJson();
if (!json.TryGet("extensions", out JsonNode extensions))
{
vrm1Data = default;
migration = new MigrationData("gltf: no extensions");
return(null);
}
if (!extensions.TryGet("VRM", out JsonNode vrm0))
{
vrm1Data = default;
migration = new MigrationData("gltf: no vrm0");
return(null);
}
// found vrm0
var oldMeta = Migration.Vrm0Meta.FromJsonBytes(json);
if (oldMeta == null)
{
throw new NullReferenceException("oldMeta");
}
// try migrate...
byte[] migrated = null;
try
{
migrated = MigrationVrm.Migrate(data);
if (migrated == null)
{
vrm1Data = default;
migration = new MigrationData("Found vrm0. But fail to migrate", oldMeta);
return(null);
}
}
catch (MigrationException ex)
{
// migration 失敗
vrm1Data = default;
migration = new MigrationData(ex.ToString(), oldMeta);
return(null);
}
catch (Exception ex)
{
// その他のエラー
vrm1Data = default;
migration = new MigrationData(ex.ToString(), oldMeta);
return(null);
}
byte[] debugCopy = null;
if (VRMShaders.Symbols.VRM_DEVELOP)
{
// load 時の右手左手座標変換でバッファが破壊的変更されるので、コピーを作っている
debugCopy = migrated.Select(x => x).ToArray();
}
// マイグレーション結果をパースする
var migratedData = new GlbLowLevelParser(data.TargetPath, migrated).Parse();
try
{
if (!UniGLTF.Extensions.VRMC_vrm.GltfDeserializer.TryGet(migratedData.GLTF.extensions, out VRMC_vrm vrm))
{
// migration した結果のパースに失敗した !
vrm1Data = default;
migration = new MigrationData("vrm0: migrate but error ?", oldMeta, migrated);
// 破棄
migratedData.Dispose();
return(null);
}
{
// success. 非null値が返るのはここだけ。
vrm1Data = new Vrm10Data(migratedData, vrm);
migration = new MigrationData("vrm0: migrated", oldMeta, debugCopy);
return(migratedData);
}
}
catch (Exception ex)
{
Debug.LogWarning(ex);
vrm1Data = default;
migration = new MigrationData(ex.Message);
// 破棄
migratedData.Dispose();
return(null);
}
}
