#ifndef __MODEL_H__
#define __MODEL_H__
#include <vector>
#include <string>
#include "geometry.h"
#include "tgaimage.h"

class Model {
private:
    std::vector<Vec3f> verts_;
    std::vector<std::vector<Vec3i> > faces_; // attention, this Vec3i means vertex/uv/normal
    std::vector<Vec3f> norms_;
    std::vector<Vec2f> uv_;
    TGAImage diffusemap_;
    TGAImage normalmap_;
    TGAImage specularmap_;
    Vec4f m_colorRGBA;
    
    void load_texture(std::string filename, const char *suffix, TGAImage &img);
public:
    Model(const char *filename);
    Model();
    void setColorRGBA(const float rgba[4])
    {
        for (int i=0;i<4;i++)
            m_colorRGBA[i] = rgba[i];
    }
    
    const Vec4f& getColorRGBA() const
    {
        return m_colorRGBA;
    }
    void loadDiffuseTexture(const char* relativeFileName);
	void setDiffuseTextureFromData(unsigned char* textureImage,int textureWidth,int textureHeight);
	void reserveMemory(int numVertices, int numIndices);
    void addVertex(float x,float y,float z, float normalX, float normalY, float normalZ, float u, float v);
    void addTriangle(int vertexposIndex0, int normalIndex0, int uvIndex0,
                        int vertexposIndex1, int normalIndex1, int uvIndex1,
                        int vertexposIndex2, int normalIndex2, int uvIndex2);
    
    ~Model();
    int nverts();
    int nfaces();
    Vec3f normal(int iface, int nthvert);
    Vec3f normal(Vec2f uv);
    Vec3f vert(int i);
    Vec3f vert(int iface, int nthvert);
    Vec2f uv(int iface, int nthvert);
    TGAColor diffuse(Vec2f uv);
    float specular(Vec2f uv);
    std::vector<int> face(int idx);
};
#endif //__MODEL_H__