using Unity.Collections;
using UnityEngine.Animations;

namespace LibMMD.Unity3D.Animation
{
    // Thin adapter: pose computation (VMD evaluation, IK, Bullet physics, baked-FK
    // interpolation) happens outside this job, on the same thread that calls
    // MmdAnimationDriver.Evaluate(). This job just overwrites the bones flagged for a write
    // (WriteFlags[i]) with already-computed poses.
    internal struct MmdPoseAnimationJob : IAnimationJob
    {
        public NativeArray<TransformStreamHandle> Handles;
        public NativeArray<BonePoseTRS> Poses;
        public NativeArray<bool> WriteFlags;

        public void ProcessAnimation(AnimationStream stream)
        {
            for (var i = 0; i < Handles.Length; ++i)
            {
                if (!WriteFlags[i])
                {
                    continue;
                }
                var handle = Handles[i];
                var pose = Poses[i];
                handle.SetPosition(stream, pose.Position);
                handle.SetRotation(stream, pose.Rotation);
            }
        }

        public void ProcessRootMotion(AnimationStream stream)
        {
        }
    }
}