Code/HumanoidRetargeter/Core/Formats/Mmd/MmdBoneNames.cs
Utility for stable ASCII bone identities for MMD models. It encodes arbitrary bone names as a hexified UTF-8 string prefixed with "mmd_", can produce a new Skeleton with encoded names while preserving parent links and bind transforms, and finds bones by original or encoded name.
File Access
using System.Text;
using HumanoidRetargeter.Core.Skeleton;
using SkeletonModel = HumanoidRetargeter.Core.Skeleton.Skeleton;
namespace HumanoidRetargeter.Core.Formats.Mmd;
/// <summary>Stable ASCII bone identities for MMD models compiled by ModelDoc.</summary>
public static class MmdBoneNames
{
/// <summary>Encodes the complete name so Unicode and helper names remain distinct.</summary>
public static string Encode( string name )
=> "mmd_" + Convert.ToHexString( Encoding.UTF8.GetBytes( name ) ).ToLowerInvariant();
/// <summary>Copies a model skeleton with compiler-safe names and unchanged bind transforms.</summary>
public static SkeletonModel EncodeSkeleton( SkeletonModel skeleton )
=> SkeletonModel.Create( skeleton.Bones.Select( bone => new BoneDefinition(
Encode( bone.Name ), bone.ParentIndex < 0 ? null : Encode( skeleton[ bone.ParentIndex ].Name ),
bone.RestLocal ) ).ToArray() );
internal static int Find( SkeletonModel skeleton, string name )
{
var index = skeleton.IndexOf( name );
return index >= 0 ? index : skeleton.IndexOf( Encode( name ) );
}
}