AssetStudio/AssetStudioFBXWrapper/Fbx.cs

using AssetStudio.FbxInterop;
using System.IO;

#if NETFRAMEWORK
using AssetStudio.PInvoke;
#endif

namespace AssetStudio
{
    public static partial class Fbx
    {
#if NETFRAMEWORK
        static Fbx()
        {
            DllLoader.PreloadDll(FbxDll.DllName);
        }
#endif

        public static Vector3 QuaternionToEuler(Quaternion q)
        {
            AsUtilQuaternionToEuler(q.X, q.Y, q.Z, q.W, out var x, out var y, out var z);
            return new Vector3(x, y, z);
        }

        public static Quaternion EulerToQuaternion(Vector3 v)
        {
            AsUtilEulerToQuaternion(v.X, v.Y, v.Z, out var x, out var y, out var z, out var w);
            return new Quaternion(x, y, z, w);
        }

        public static class Exporter
        {

            public static void Export(string path, IImported imported, bool eulerFilter, float filterPrecision,
                bool allNodes, bool skins, bool animation, bool blendShape, bool castToBone, float boneSize, bool exportAllUvsAsDiffuseMaps, float scaleFactor, int versionIndex, bool isAscii)
            {
                var file = new FileInfo(path);
                var dir = file.Directory;

                if (!dir.Exists)
                {
                    dir.Create();
                }

                var currentDir = Directory.GetCurrentDirectory();
                Directory.SetCurrentDirectory(dir.FullName);

                var name = Path.GetFileName(path);

                using (var exporter = new FbxExporter(name, imported, allNodes, skins, castToBone, boneSize, exportAllUvsAsDiffuseMaps, scaleFactor, versionIndex, isAscii))
                {
                    exporter.Initialize();
                    exporter.ExportAll(blendShape, animation, eulerFilter, filterPrecision);
                }

                Directory.SetCurrentDirectory(currentDir);
            }

        }

    }
}