#ifndef B3DM_LOADER_H_
#define B3DM_LOADER_H_
#include <iostream>
#include "tiny_gltf.h"
using namespace tinygltf;

class MeshInfo
{
public:
	float* mVertexs = nullptr;
	int mVertexCount = 0;
	unsigned int* mTriangles = nullptr;
	int mTriangleCount = 0;
	unsigned char* mImageData;
	unsigned int mImageSize = 0;
	float* mTexCoords = nullptr;
	int mTexCoordCount = 0;
	int mImageResolutionS = 0;
	int mImageResolutionT = 0;
	int mTextureFormat = 0;

	void ReleaseMeshInfo()
	{
		delete[] mVertexs;
		delete[] mTriangles;
		delete[] mImageData;
		delete[] mTexCoords;
		mVertexs = nullptr;
		mTriangles = nullptr;
		mImageData = nullptr;
		mTexCoords = nullptr;
	}
};

class b3dm_loader
{
public:
	~b3dm_loader()
	{
		ReleaseMeshInfo();
	}
	static b3dm_loader* LoadB3dmFromFile(const std::string& filename);
	void VisitorModel(const tinygltf::Model& model);
	std::vector<MeshInfo*> mMeshInfos;
private:
	MeshInfo* VisitorPrimitive(const tinygltf::Model& model, const Primitive& primitive);
	void ReleaseMeshInfo()
	{
		auto itor = mMeshInfos.begin();
		while (itor != mMeshInfos.end())
		{
			(*itor)->ReleaseMeshInfo();
			itor++;
		}
	}
};

#endif