//-----------------------------------------------------------------------------
// Copyright (c) 2013 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// IN THE SOFTWARE.
//-----------------------------------------------------------------------------

#ifndef _RECAST_POLYLIST_H_
#define _RECAST_POLYLIST_H_

#include "collision/abstractPolyList.h"
#include "core/util/tVector.h"

#ifndef CHUNKYTRIMESH_H
#include "ChunkyTriMesh.h"
#endif

/// Represents polygons in the same manner as the .obj file format. Handy for
/// padding data to Recast, since it expects this data format. At the moment,
/// this class only accepts triangles.
/// @see AbstractPolyList
class RecastPolyList : public AbstractPolyList {
public:
   /// @name AbstractPolyList
   /// @{

   bool isEmpty() const override;

   U32 addPoint(const Point3F &p) override;
   U32 addPlane(const PlaneF &plane) override;

   void begin(BaseMatInstance *material, U32 surfaceKey) override;

   void plane(U32 v1, U32 v2, U32 v3) override;
   void plane(const PlaneF& p) override;
   void plane(const U32 index) override;

   void vertex(U32 vi) override;

   void end() override;

   /// @}

   /// @name Data interface
   /// @{
   U32 getVertCount() const;
   const F32 *getVerts() const;

   const F32* getNormals() const;

   U32 getTriCount() const;
   const S32 *getTris() const;

   void clear();
   /// @}

   void renderWire() const;

   /// Default constructor.
   RecastPolyList();
   /// Default destructor.
   ~RecastPolyList();

   rcChunkyTriMesh* getChunkyMesh();


protected:
   /// Number of vertices defined.
   U32 nverts;
   /// Array of vertex coordinates. Size nverts*3
   F32 *verts;
   /// Size of vertex array.
   U32 vertcap;

   // Number of normals defined.
   U32 nnormals;
   // Array of normals (xyz in float array)
   F32* normals;
   // Size of normal array (matches verts)
   U32 normalcap;

   /// Number of triangles defined.
   U32 ntris;
   /// Array of triangle vertex indices. Size ntris*3
   S32 *tris;
   /// Size of triangle array.
   U32 tricap;

   /// Index of vertex we're adding to the current triangle.
   U8 vidx;

   /// Store a list of planes - not actually used.
   Vector<PlaneF> planes;
   /// Another inherited utility function.
   const PlaneF& getIndexedPlane(const U32 index) override { return planes[index]; }

   rcChunkyTriMesh* mChunkyMesh;

private:
};

#endif