using System;
using System.Collections.Generic;
using System.Linq;
using Syroot.NintenTools.NSW.Bfres;
using Syroot.NintenTools.NSW.Bfres.Helpers;
using System.Windows.Forms;
using Switch_Toolbox.Library;
using Switch_Toolbox.Library.Rendering;
using Switch_Toolbox.Library.Forms;
using ResU = Syroot.NintenTools.Bfres;
using ResUGX2 = Syroot.NintenTools.Bfres.GX2;
using ResGFX = Syroot.NintenTools.NSW.Bfres.GFX;
using FirstPlugin;
using OpenTK;

namespace Bfres.Structs
{
    public class FSHPFolder : TreeNodeCustom
    {
        public FSHPFolder()
        {
            Text = "Objects";
            Name = "FshpFolder";

            ContextMenu = new ContextMenu();
            MenuItem import = new MenuItem("Add Object");
            ContextMenu.MenuItems.Add(import);
            import.Click += Import;
            MenuItem exportAll = new MenuItem("Export All Objects");
            ContextMenu.MenuItems.Add(exportAll);
            exportAll.Click += ExportAll;
            MenuItem clear = new MenuItem("Clear All Objects");
            ContextMenu.MenuItems.Add(clear);
            clear.Click += Clear;
        }
        private void Clear(object sender, EventArgs args)
        {
            DialogResult dialogResult = MessageBox.Show("Are you sure you want to remove all objects? This cannot be undone!", "", MessageBoxButtons.YesNo);

            if (dialogResult == DialogResult.Yes)
            {
                Nodes.Clear();
                ((FMDL)Parent).shapes.Clear();
                ((FMDL)Parent).UpdateVertexData();
            }
        }
        private void ExportAll(object sender, EventArgs args)
        {
            ((FMDL)Parent).ExportAll();
        }
        private void Import(object sender, EventArgs args)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Supported Formats|*.bfobj;*.fbx;*.dae; *.obj;*.csv;|" +
             "Bfres Object (shape/vertices) |*.bfobj|" +
             "FBX |*.fbx|" +
             "DAE |*.dae|" +
             "OBJ |*.obj|" +
             "CSV |*.csv|" +
             "All files(*.*)|*.*";
            ofd.Multiselect = true;
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                foreach (string file in ofd.FileNames)
                    ((FMDL)Parent).AddOjects(file, false);
            }
        }


        public override void OnClick(TreeView treeView)
        {

        }
    }
    public struct DisplayVertex
    {
        // Used for rendering.
        public Vector3 pos;
        public Vector3 nrm;
        public Vector3 tan;
        public Vector3 bit;
        public Vector2 uv;
        public Vector4 col;
        public Vector4 node;
        public Vector4 weight;
        public Vector2 uv2;
        public Vector2 uv3;
        public Vector3 pos1;
        public Vector3 pos2;

        public static int Size = 4 * (3 + 3 + 3 + 3 + 2 + 4 + 4 + 4 + 2 + 2 + 3 + 3);
    }
    public class FSHP : STGenericObject
    {
        public FSHP()
        {
            Checked = true;
            ImageKey = "mesh";
            SelectedImageKey = "mesh";

            ContextMenu = new ContextMenu();
            MenuItem export = new MenuItem("Export Mesh");
            ContextMenu.MenuItems.Add(export);
            export.Click += Export;
            MenuItem replace = new MenuItem("Replace Mesh");
            ContextMenu.MenuItems.Add(replace);
            replace.Click += Replace;
            MenuItem remove = new MenuItem("Delete Mesh");
            ContextMenu.MenuItems.Add(remove);
            remove.Click += Remove;
            MenuItem calcTansBitans = new MenuItem("Recalulate Tangents/Bitangents");
            ContextMenu.MenuItems.Add(calcTansBitans);
            calcTansBitans.Click += CalcTansBitans;
            MenuItem flipUVsY = new MenuItem("Flip UVs (Vertical)");
            ContextMenu.MenuItems.Add(flipUVsY);
            flipUVsY.Click += FlipUvsVertical;
            MenuItem flipUVsX = new MenuItem("Flip UVs (Horizontal)");
            ContextMenu.MenuItems.Add(flipUVsX);
            flipUVsX.Click += FlipUvsHorizontal;
            MenuItem normals = new MenuItem("Normals");
            ContextMenu.MenuItems.Add(normals);
            MenuItem smoothNormals = new MenuItem("Smooth");
            normals.MenuItems.Add(smoothNormals);
            smoothNormals.Click += SmoothNormals;
            MenuItem recalculateNormals = new MenuItem("Recalculate");
            normals.MenuItems.Add(recalculateNormals);
            recalculateNormals.Click += RecalculateNormals;

            MenuItem matEditor = new MenuItem("Open Material Editor");
            ContextMenu.MenuItems.Add(matEditor);
            matEditor.Click += OpenMaterialEditor;

            MenuItem rename = new MenuItem("Rename");
            ContextMenu.MenuItems.Add(rename);
            rename.Click += Rename;
        }
        public int ModelIndex; //For getting the model the shape is in

        public VertexBuffer VertexBuffer;
        public Shape Shape;
        public ResU.VertexBuffer VertexBufferU;
        public ResU.Shape ShapeU;

        public ResFile GetResFile()
        {
            //ResourceFile -> FMDL -> Material Folder -> this
            return ((FMDL)Parent.Parent).GetResFile();
        }
        public ResU.ResFile GetResFileU()
        {
            return ((FMDL)Parent.Parent).GetResFileU();
        }
        public void UpdateVertexData()
        {
            ((FMDL)Parent.Parent).UpdateVertexData();
        }
        public List<FMDL> GetModelList()
        {
           return ((FMDL)Parent.Parent).GetModelList();
        }

        public FMAT GetMaterial()
        {
            return ((FMDL)Parent.Parent).materials.Values.ElementAt(MaterialIndex);
        }
        public void SetMaterial(FMAT material)
        {
            ((FMDL)Parent.Parent).materials[material.Text] = material;
        }

        public override void OnClick(TreeView treeView)
        {
            UpdateFSHPEditor();
        }
        public void UpdateFSHPEditor()
        {
            FSHPEditor docked = (FSHPEditor)LibraryGUI.Instance.GetContentDocked(new FSHPEditor());
            if (docked == null)
            {
                docked = new FSHPEditor();
                LibraryGUI.Instance.LoadDockContent(docked, PluginRuntime.FSHPDockState);
            }
            docked.Text = Text;
            docked.Dock = DockStyle.Fill;
            docked.LoadObject((FMDL)Parent.Parent, this);
        }
        private void SmoothNormals(object sender, EventArgs args)
        {
            Cursor.Current = Cursors.WaitCursor;
            SmoothNormals();
            SaveVertexBuffer();
            UpdateVertexData();
            Cursor.Current = Cursors.Default;
        }
        private void RecalculateNormals(object sender, EventArgs args)
        {
            Cursor.Current = Cursors.WaitCursor;
            CalculateNormals();
            SaveVertexBuffer();
            UpdateVertexData();
            Cursor.Current = Cursors.Default;
        }
        private void Rename(object sender, EventArgs args)
        {
            RenameDialog dialog = new RenameDialog();
            dialog.SetString(Text);

            if (dialog.ShowDialog() == DialogResult.OK)
            {
                Text = dialog.textBox1.Text;
            }
        }
        private void Remove(object sender, EventArgs args)
        {
            DialogResult dialogResult = MessageBox.Show("Are you sure you want to remove this object? This cannot be undone!", "", MessageBoxButtons.YesNo);

            if (dialogResult == DialogResult.Yes)
            {
                ((FMDL)Parent.Parent).shapes.Remove(this);
                ((FMDL)Parent.Parent).UpdateVertexData();
                Parent.Nodes.Remove(this);
            }
        }
        public void ApplyImportSettings(BfresModelImportSettings settings, FMAT mat)
        {
            if (settings.FlipUVsVertical)
            {
                foreach (Vertex v in vertices)
                {
                    v.uv0 = new Vector2(v.uv0.X, 1 - v.uv0.Y);
                }
            }
            if (settings.RecalculateNormals)
            {
                CalculateNormals();
            }
            if (settings.Rotate90DegreesY)
            {
                TransformPosition(Vector3.Zero, new Vector3(90, 0, 0), new Vector3(1));
            }
            if (settings.Rotate90DegreesNegativeY)
            {
                TransformPosition(Vector3.Zero, new Vector3(-90, 0, 0), new Vector3(1));
            }
            if (settings.EnableTangents)
            {
                try
                {
                    CalculateTangentBitangent();
                }
                catch
                {
                    MessageBox.Show($"Failed to generate tangents for mesh {Text}");
                }
            }
            if (settings.SetDefaultParamData)
            {
                foreach (var param in mat.matparam.Values)
                {
                    switch (param.Name)
                    {
                        case "const_color0":
                        case "const_color1":
                        case "const_color2":
                        case "const_color3":
                        case "base_color_mul_color":
                        case "uniform0_mul_color":
                        case "uniform1_mul_color":
                        case "uniform2_mul_color":
                        case "uniform3_mul_color":
                        case "uniform4_mul_color":
                        case "proc_texture_2d_mul_color":
                        case "proc_texture_3d_mul_color":
                        case "displacement1_color":
                        case "ripple_emission_color":
                        case "hack_color":
                        case "stain_color":
                        case "displacement_color":
                            param.ValueFloat = new float[] { 1, 1, 1, 1 };
                            break;
                        case "gsys_bake_st0":
                            param.ValueFloat = new float[] { 1, 1, 0, 0 };
                            break;
                        case "gsys_bake_st1":
                            param.ValueFloat = new float[] { 1, 1, 0, 0 };
                            break;
                    }
                }
            }
        }
        public void TransformPosition(Vector3 Position, Vector3 Rotation, Vector3 Scale)
        {
            Matrix4 BonePosExtra = Utils.TransformValues(Position, Rotation, Scale);
            foreach (Vertex v in vertices)
            {
                v.pos = Vector3.TransformPosition(v.pos, BonePosExtra);
                v.nrm = Vector3.TransformNormal(v.pos, BonePosExtra);
            }
        }
        private void OpenMaterialEditor(object sender, EventArgs args)
        {
           GetMaterial().UpdateFMATEditor();
        }
        private void CalcTansBitans(object sender, EventArgs args)
        {
            Cursor.Current = Cursors.WaitCursor;

            bool HasTans = vertexAttributes.Any(x => x.Name == "_t0");
            bool HasBiTans = vertexAttributes.Any(x => x.Name == "_b0");

            if (!HasUV0())
            {
                MessageBox.Show($"Error! {Text} does not have UVs!", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (!HasBiTans)
            {
                DialogResult dialogResult2 = MessageBox.Show("Mesh does not have bitangents. Do you want to create them? (will make file size bigger)", "", MessageBoxButtons.YesNo);

                VertexAttribute att2 = new VertexAttribute();
                att2.Name = "_b0";
                att2.Format = ResGFX.AttribFormat.Format_10_10_10_2_SNorm;

                if (dialogResult2 == DialogResult.Yes)
                {
                    if (!HasBiTans)
                        vertexAttributes.Add(att2);
                }
            }

            if (!HasTans)
            {
                DialogResult dialogResult = MessageBox.Show("Mesh does not have tangets. Do you want to create them? (will make file size bigger)", "", MessageBoxButtons.YesNo);

                VertexAttribute att = new VertexAttribute();
                att.Name = "_t0";
                att.Format = ResGFX.AttribFormat.Format_10_10_10_2_SNorm;


                if (dialogResult == DialogResult.Yes)
                {
                    if (!HasTans)
                        vertexAttributes.Add(att);
                }
            }

            CalculateTangentBitangent();
            SaveVertexBuffer();
            UpdateVertexData();
            Cursor.Current = Cursors.Default;
        }
        public bool HasUV0()
        {
            return vertexAttributes.Any(x => x.Name == "_u0");
        }
        public bool HasUV1()
        {
            return vertexAttributes.Any(x => x.Name == "_u1");
        }
        public bool HasUV2()
        {
            return vertexAttributes.Any(x => x.Name == "_u2");
        }
        public void FlipUvsVertical(object sender, EventArgs args)
        {
            if (!HasUV0())
            {
                MessageBox.Show($"Error! {Text} does not have UVs!", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            FlipUvsVertical();
            SaveVertexBuffer();
            UpdateVertexData();
        }
        public void FlipUvsHorizontal(object sender, EventArgs args)
        {
            if (!HasUV0())
            {
                MessageBox.Show($"Error! {Text} does not have UVs!", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            FlipUvsHorizontal();
            SaveVertexBuffer();
            UpdateVertexData();
        }
        public void ExportMaterials(object sender, EventArgs args)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "Materials|*.bfmat;";
            sfd.DefaultExt = ".bfmat";
            sfd.FileName = GetMaterial().Text;

            if (sfd.ShowDialog() == DialogResult.OK)
            {
                GetMaterial().Material.Export(sfd.FileName, GetResFile());
            }
        }
        public void ReplaceMaterials(object sender, EventArgs args)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Materials|*.bfmat;";
            ofd.DefaultExt = ".bfmat";
            ofd.FileName = GetMaterial().Text;

            if (ofd.ShowDialog() == DialogResult.OK)
            {
                GetMaterial().Material.Import(ofd.FileName);
            }
        }
        public void Export(object sender, EventArgs args)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "Supported Formats|*.bfobj;*.fbx;*.dae; *.obj;|" +
             "Bfres Object (shape/vertices) |*.bfobj|" +
             "FBX |*.fbx|" +
             "DAE |*.dae|" +
             "OBJ |*.obj|" +
             "All files(*.*)|*.*";
            sfd.DefaultExt = ".bfobj";
            sfd.FileName = Text;

            if (sfd.ShowDialog() == DialogResult.OK)
            {
                string ext = System.IO.Path.GetExtension(sfd.FileName);
                ext = ext.ToLower();

                switch (ext)
                {
                    case ".bfobj":
                        ExportBinaryObject(sfd.FileName);
                        break;
                    default:
                        AssimpData assimp = new AssimpData();
                        assimp.SaveFromObject(vertices, lodMeshes[DisplayLODIndex].faces, Text, sfd.FileName);
                        break;
                }
            }
        }
        public void ExportBinaryObject(string FileName)
        {
            Shape.Export(FileName, GetResFile());
        }
        public void Replace(object sender, EventArgs args)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Supported Formats|*.bfobj;*.fbx;*.dae; *.obj;|" +
             "Bfres Object (shape/vertices) |*.bfobj|" +
             "FBX |*.fbx|" +
             "DAE |*.dae|" +
             "OBJ |*.obj|" +
             "All files(*.*)|*.*";

            if (ofd.ShowDialog() == DialogResult.OK)
            {
                string ext = System.IO.Path.GetExtension(ofd.FileName);
                ext = ext.ToLower();

                switch (ext)
                {
                    case ".bfobj":
                        Shape shp = new Shape();
                        shp.Import(ofd.FileName, VertexBuffer);
                        shp.Name = Text;
                        shp.MaterialIndex = (ushort)MaterialIndex;
                        BfresSwitch.ReadShapesVertices(this, shp, VertexBuffer, GetModelList()[ModelIndex]);
                        break;
                    default:
                        AssimpData assimp = new AssimpData();
                        assimp.LoadFile(ofd.FileName);
                        AssimpMeshSelector selector = new AssimpMeshSelector();
                        selector.LoadMeshes(assimp, Index);

                        if (selector.ShowDialog() == DialogResult.OK)
                        {
                            if (assimp.objects.Count == 0)
                            {
                                MessageBox.Show("No models found!");
                                return;
                            }
                            BfresModelImportSettings settings = new BfresModelImportSettings();
                            settings.SetModelAttributes(assimp.objects[0]);
                            if (settings.ShowDialog() == DialogResult.OK)
                            {
                                GenericObject obj = selector.GetSelectedMesh();

                                Cursor.Current = Cursors.WaitCursor;
                                VertexBufferIndex = obj.VertexBufferIndex;
                                vertices = obj.vertices;
                                CreateBoneList(obj, (FMDL)Parent.Parent);
                                VertexSkinCount = obj.MaxSkinInfluenceCount;
                                vertexAttributes = settings.CreateNewAttributes();
                                lodMeshes = obj.lodMeshes;
                                CreateNewBoundingBoxes();
                                SaveShape();
                                SaveVertexBuffer();
                                Cursor.Current = Cursors.Default;
                            }
                        }
                        break;
                }
                UpdateVertexData();
            }
        }
        public void CreateIndexList(GenericObject ob, FMDL mdl = null)
        {
            BoneIndices = new List<ushort>();

            List<string> boneNames = new List<string>();
            foreach (Vertex v in ob.vertices)
            {
                foreach (string bn in v.boneNames)
                {
                    if (!boneNames.Contains(bn))
                        boneNames.Add(bn);
                }
            }

            int index = 0;
            foreach (STBone bone in mdl.Skeleton.bones)
            {
                foreach (string bnam in boneNames)
                {
                    if (bone.Text == bnam)
                    {
                        BoneIndices.Add((ushort)index);
                    }
                }
                index++;
            }
        }
        public void CreateBoneList(GenericObject ob, FMDL mdl)
        {
            string[] nodeArrStrings = new string[mdl.Skeleton.Node_Array.Length];

            int CurNode = 0;
            foreach (int thing in mdl.Skeleton.Node_Array)
                nodeArrStrings[CurNode++] = mdl.Skeleton.bones[thing].Text;


            foreach (Vertex v in ob.vertices)
            {
                foreach (string bn in v.boneNames)
                {
                    foreach (var defBn in nodeArrStrings.Select((Value, Index) => new { Value, Index }))
                    {
                        if (bn == defBn.Value)
                        {
                            v.boneIds.Add(defBn.Index);
                        }
                    }
                }
            }
        }
        public void CreateNewBoundingBoxes()
        {
            boundingBoxes.Clear();
            boundingRadius.Clear();
            foreach (LOD_Mesh mesh in lodMeshes)
            {
                BoundingBox box = CalculateBoundingBox();
                boundingBoxes.Add(box);
                boundingRadius.Add((float)(box.Center.Length + box.Extend.Length));
                foreach (LOD_Mesh.SubMesh sub in mesh.subMeshes)
                    boundingBoxes.Add(box);
            }
        }
        private BoundingBox CalculateBoundingBox()
        {
            Vector3 Max = new Vector3();
            Vector3 Min = new Vector3();

            Min = Max = vertices[0].pos;

            Min = CalculateBBMin(vertices);
            Max = CalculateBBMax(vertices);
            Vector3 center = (Max + Min);
            Vector3 extend = Max - Min;

            return new BoundingBox() { Center = center, Extend = extend };
        }
        private Vector3 CalculateBBMin(List<Vertex> positionVectors)
        {
            Vector3 minimum = new Vector3();
            foreach (Vertex vtx in positionVectors)
            {
                if (vtx.pos.X < minimum.X) minimum.X = vtx.pos.X;
                if (vtx.pos.Y < minimum.Y) minimum.Y = vtx.pos.Y;
                if (vtx.pos.Z < minimum.Z) minimum.Z = vtx.pos.Z;
            }

            return minimum;
        }

        private Vector3 CalculateBBMax(List<Vertex> positionVectors)
        {
            Vector3 maximum = new Vector3();
            foreach (Vertex vtx in positionVectors)
            {
                if (vtx.pos.X > maximum.X) maximum.X = vtx.pos.X;
                if (vtx.pos.Y > maximum.Y) maximum.Y = vtx.pos.Y;
                if (vtx.pos.Z > maximum.Z) maximum.Z = vtx.pos.Z;
            }

            return maximum;
        }

        private void UpdateShaderAssignAttributes(FMAT material)
        {
            material.shaderassign.samplers.Clear();
            foreach (VertexAttribute att in vertexAttributes)
            {
                material.shaderassign.attributes.Add(att.Name, att.Name);
            }
        }

        public int[] Faces;
        public List<ushort> BoneIndices = new List<ushort>();

        // for drawing
        public int[] display;
        public int VertexSkinCount;
        public int DisplayId;
        public int boneIndx;
        public int VertexBufferIndex;
        public int TargetAttribCount;

        public List<float> boundingRadius = new List<float>();
        public List<BoundingBox> boundingBoxes = new List<BoundingBox>();
        public class BoundingBox
        {
            public Vector3 Center;
            public Vector3 Extend;
        }
        public int DisplayLODIndex = 0;

        public List<VertexAttribute> vertexAttributes = new List<VertexAttribute>();
        public class VertexAttribute
        {
            public string Name;
            public ResGFX.AttribFormat Format;

            public override string ToString()
            {
                return Name;
            }

            public ResGFX.AttribFormat GetTypeWiiU(ResUGX2.GX2AttribFormat type)
            {
                return (ResGFX.AttribFormat)System.Enum.Parse(typeof(ResGFX.AttribFormat), $"{type.ToString()}");
            }
            public ResUGX2.GX2AttribFormat SetTypeWiiU(ResGFX.AttribFormat type)
            {
                return (ResUGX2.GX2AttribFormat)System.Enum.Parse(typeof(ResUGX2.GX2AttribFormat), type.ToString());
            }
        }
        public void SaveShape()
        {
            if (!BFRES.IsWiiU)
                Shape = BfresSwitch.SaveShape(this);
            else
                ShapeU = BfresWiiU.SaveShape(this);
        }
        public IList<ushort> GetIndices()
        {
            IList<ushort> indices = new List<ushort>();

            List<string> BoneNodes = new List<string>();
            foreach (Vertex vtx in vertices)
            {

            }
            return indices;
        }
        public Vector3 TransformLocal(Vector3 position, bool IsPos = true)
        {
            Matrix4 trans = Matrix4.CreateTranslation(0, 0, 0);

            if (IsPos)
                return Vector3.TransformPosition(position, trans);
            else
                return Vector3.TransformNormal(position, trans);
        }
        public void SaveVertexBuffer()
        {
            if (BFRES.IsWiiU)
            {
                BfresWiiU.SaveVertexBuffer(this);
                return;
            }

            VertexBufferHelper helpernx = new VertexBufferHelper(new VertexBuffer(), Syroot.BinaryData.ByteOrder.LittleEndian);
            List<VertexBufferHelperAttrib> atrib = new List<VertexBufferHelperAttrib>();
            UpdateVertices();

            foreach (VertexAttribute att in vertexAttributes)
            {
                if (att.Name == "_p0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = verts.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_n0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = norms.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_u0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = uv0.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_u1")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = uv1.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_u2")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = uv2.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_w0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = weights.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_i0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = boneInd.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_b0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = bitans.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_t0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = tans.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
                if (att.Name == "_c0")
                {
                    VertexBufferHelperAttrib vert = new VertexBufferHelperAttrib();
                    vert.Name = att.Name;
                    vert.Data = colors.ToArray();
                    vert.Format = att.Format;
                    atrib.Add(vert);
                }
            }
            if (atrib.Count == 0)
            {
                MessageBox.Show("Attributes are empty?");
                return;
            }
            helpernx.Attributes = atrib;
            VertexBuffer = helpernx.ToVertexBuffer();
        }

        internal List<Syroot.Maths.Vector4F> verts = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> norms = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> uv0 = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> uv1 = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> uv2 = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> tans = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> bitans = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> weights = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> boneInd = new List<Syroot.Maths.Vector4F>();
        internal List<Syroot.Maths.Vector4F> colors = new List<Syroot.Maths.Vector4F>();

        public string GetBoneNameFromIndex(FMDL mdl, int index)
        {
            if (index == 0)
                return "";

            return mdl.Skeleton.bones[mdl.Skeleton.Node_Array[index]].Text;
        }

        public void UpdateVertices()
        {
            //     CalculateTangentBitangent();

            foreach (Vertex vtx in vertices)
            {
                if (VertexSkinCount == 0 || VertexSkinCount == 1)
                {
                    //     Console.WriteLine("Old " + vtx.pos);
                    //  vtx.pos = TransformLocal(vtx.pos);
                    //  vtx.nrm = TransformLocal(vtx.nrm, false);
                    //     Console.WriteLine("New " + vtx.pos);
                }
                //Console.WriteLine($"Weight count {vtx.boneWeights.Count}");
                //Console.WriteLine($"Index count {vtx.boneIds.Count}");

                verts.Add(new Syroot.Maths.Vector4F(vtx.pos.X, vtx.pos.Y, vtx.pos.Z, 1.0f));
                norms.Add(new Syroot.Maths.Vector4F(vtx.nrm.X, vtx.nrm.Y, vtx.nrm.Z, 0));
                uv0.Add(new Syroot.Maths.Vector4F(vtx.uv0.X, vtx.uv0.Y, 0, 0));
                uv1.Add(new Syroot.Maths.Vector4F(vtx.uv1.X, vtx.uv1.Y, 0, 0));
                uv2.Add(new Syroot.Maths.Vector4F(vtx.uv2.X, vtx.uv2.Y, 0, 0));
                tans.Add(new Syroot.Maths.Vector4F(vtx.tan.X, vtx.tan.Y, vtx.tan.Z, vtx.tan.W));
                bitans.Add(new Syroot.Maths.Vector4F(vtx.bitan.X, vtx.bitan.Y, vtx.bitan.Z, vtx.bitan.W));


                if (vtx.boneWeights.Count == 0)
                {
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                }
                if (vtx.boneWeights.Count == 1)
                {
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                }
                if (vtx.boneWeights.Count == 2)
                {
                    vtx.boneWeights.Add(0);
                    vtx.boneWeights.Add(0);
                }
                if (vtx.boneWeights.Count == 3)
                {
                    vtx.boneWeights.Add(0);
                }
                if (vtx.boneIds.Count == 0)
                {
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                }
                if (vtx.boneIds.Count == 1)
                {
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                }
                if (vtx.boneIds.Count == 2)
                {
                    vtx.boneIds.Add(0);
                    vtx.boneIds.Add(0);
                }
                if (vtx.boneIds.Count == 3)
                {
                    vtx.boneIds.Add(0);
                }
                weights.Add(new Syroot.Maths.Vector4F(vtx.boneWeights[0], vtx.boneWeights[1], vtx.boneWeights[2], vtx.boneWeights[3]));
                boneInd.Add(new Syroot.Maths.Vector4F(vtx.boneIds[0], vtx.boneIds[1], vtx.boneIds[2], vtx.boneIds[3]));
                colors.Add(new Syroot.Maths.Vector4F(vtx.col.X, vtx.col.Y, vtx.col.Z, vtx.col.W));
            }
        }

        public List<DisplayVertex> CreateDisplayVertices()
        {
            // rearrange faces
            display = lodMeshes[DisplayLODIndex].getDisplayFace().ToArray();

            List<DisplayVertex> displayVertList = new List<DisplayVertex>();

            if (lodMeshes[DisplayLODIndex].faces.Count <= 3)
                return displayVertList;

            foreach (Vertex v in vertices)
            {
                DisplayVertex displayVert = new DisplayVertex()
                {
                    pos = v.pos,
                    nrm = v.nrm,
                    tan = v.tan.Xyz,
                    bit = v.bitan.Xyz,
                    col = v.col,
                    uv = v.uv0,
                    uv2 = v.uv1,
                    uv3 = v.uv2,
                    node = new Vector4(
                         v.boneIds.Count > 0 ? v.boneIds[0] : -1,
                         v.boneIds.Count > 1 ? v.boneIds[1] : -1,
                         v.boneIds.Count > 2 ? v.boneIds[2] : -1,
                         v.boneIds.Count > 3 ? v.boneIds[3] : -1),
                    weight = new Vector4(
                         v.boneWeights.Count > 0 ? v.boneWeights[0] : 0,
                         v.boneWeights.Count > 1 ? v.boneWeights[1] : 0,
                         v.boneWeights.Count > 2 ? v.boneWeights[2] : 0,
                         v.boneWeights.Count > 3 ? v.boneWeights[3] : 0),
                };

                displayVertList.Add(displayVert);


                /*   Console.WriteLine($"---------------------------------------------------------------------------------------");
                   Console.WriteLine($"Position   {displayVert.pos.X} {displayVert.pos.Y} {displayVert.pos.Z}");
                   Console.WriteLine($"Normal     {displayVert.nrm.X} {displayVert.nrm.Y} {displayVert.nrm.Z}");
                   Console.WriteLine($"Binormal   {displayVert.bit.X} {displayVert.bit.Y} {displayVert.bit.Z}");
                   Console.WriteLine($"Tanget     {displayVert.tan.X} {displayVert.tan.Y} {displayVert.tan.Z}");
                   Console.WriteLine($"Color      {displayVert.col.X} {displayVert.col.Y} {displayVert.col.Z} {displayVert.col.W}");
                   Console.WriteLine($"UV Layer 1 {displayVert.uv.X} {displayVert.uv.Y}");
                   Console.WriteLine($"UV Layer 2 {displayVert.uv2.X} {displayVert.uv2.Y}");
                   Console.WriteLine($"UV Layer 3 {displayVert.uv3.X} {displayVert.uv3.Y}");
                   Console.WriteLine($"Bone Index {displayVert.node.X} {displayVert.node.Y} {displayVert.node.Z} {displayVert.node.W}");
                   Console.WriteLine($"Weights    {displayVert.weight.X} {displayVert.weight.Y} {displayVert.weight.Z} {displayVert.weight.W}");
                   Console.WriteLine($"---------------------------------------------------------------------------------------");*/
            }

            return displayVertList;
        }
    }
}