good and simple texture loading library/class

class CImage{public:	CImage() { m_Data = 0; }	~CImage() {};    void Release();        bool Load(char *Filename);    bool Load(CImage *Img);    bool Load(unsigned char *Img, int Width, int Height, int Bpp);    bool Load(int Width, int Height, int Bpp);    bool LoadRaw(char *Filename, int Bpp);    bool SaveToFile(char *Filename);    void Resize(int Width, int Height);	void *Lock();	int Width();	int Height();	int Bpp();	char *Filename();private:    void FlipVertically();    void FlipHorizontally();	void SwapRB();	unsigned char *m_Data;	char m_Filename[255];	int m_Width;	int m_Height;    int m_Bpp;};

#include "CImage.h"#include "il/il.h"#include "il/il_wrap.h"void CImage::Release(){	// free memory	if(m_Data)	{		delete [] m_Data;		m_Data = 0;	}}bool CImage::Load(char *Filename){	// free memory	Release();	// load iamge	if(!ilLoadImage(Filename))		return false;	// save filename	strcpy(m_Filename, Filename);	// save image settings    m_Width = ilGetInteger(IL_IMAGE_WIDTH);    m_Height = ilGetInteger(IL_IMAGE_HEIGHT);    m_Bpp = ilGetInteger(IL_IMAGE_BPP);	//get a pointer to image data    unsigned char *Data = ilGetData();    if(!Data) return false;    // allocate memory for image	m_Data = new unsigned char[m_Width*m_Height*m_Bpp];	if(!m_Data) return false;    // copy image data	for(int i=0; i < m_Width * m_Height * m_Bpp; i++)		m_Data = Data;    // rotate and swap channels if needed    string temp = Filename;    transform(temp.begin(), temp.end(), temp.begin(), tolower);    // if .bmp file, convert from BGR to RGB format	if(strstr(temp.c_str(), ".bmp") || strstr(temp.c_str(), ".tga"))	 	SwapRB();	// if .tga file, flip vertically	if(strstr(temp.c_str(), ".tga") || strstr(temp.c_str(), ".bmp") /*|| strstr(temp.c_str(), ".jpg") ||*/         /*strstr(temp.c_str(), ".dds") */)		FlipVertically();    if(strstr(temp.c_str(), ".jpg"))        FlipHorizontally();	// success	return true;}bool CImage::Load(CImage *Img){    // check pointer    if(!Img) return false;            // free memory	Release();	// save filename	strcpy(m_Filename, Img->Filename());	// save image settings    m_Width = Img->Width();    m_Height = Img->Height();    m_Bpp = Img->Bpp();	//get a pointer to image data    unsigned char *Data = (unsigned char *)Img->Lock();    if(!Data) return false;    // allocate memory for image	m_Data = new unsigned char[m_Width*m_Height*m_Bpp];	if(!m_Data) return false;     // copy image data	for(int i=0; i < m_Width * m_Height * m_Bpp; i++)		m_Data = Data;    // rotate and swap channels if needed    string temp = Img->Filename();    transform(temp.begin(), temp.end(), temp.begin(), tolower);    // if .bmp file, convert from BGR to RGB format	if(strstr(temp.c_str(), ".bmp") || strstr(temp.c_str(), ".tga"))	 	SwapRB();	// if .tga file, flip vertically	if(strstr(temp.c_str(), ".tga") || strstr(temp.c_str(), ".bmp") /*|| strstr(temp.c_str(), ".jpg") ||*/        /*strstr(temp.c_str(), ".dds") */)		FlipVertically();    if(strstr(temp.c_str(), ".jpg"))        FlipHorizontally();	// success	return true;}bool CImage::Load(unsigned char *Img, int Width, int Height, int Bpp){    // check pointer    if(!Img) return false;    // free memory	Release();	// save filename	strcpy(m_Filename, "");	// save image settings    m_Width = Width;    m_Height = Height;    m_Bpp = Bpp;    // allocate memory for image	m_Data = new unsigned char[m_Width*m_Height*m_Bpp];	if(!m_Data) return false;    // copy image data	for(int i=0; i < m_Width * m_Height * m_Bpp; i++)		m_Data = Img;	// success	return true;}bool CImage::Load(int Width, int Height, int Bpp){    // free memory	Release();	// save filename	strcpy(m_Filename, "");	// save image settings    m_Width = Width;    m_Height = Height;    m_Bpp = Bpp;    // allocate memory for image	m_Data = new unsigned char[m_Width*m_Height*m_Bpp];	if(!m_Data) return false;    // set image data to 0	for(int i=0; i < m_Width * m_Height * m_Bpp; i++)		m_Data = 0;	// success	return true;}bool CImage::LoadRaw(char *Filename, int Bpp){    // free memory	Release();    // check file    FILE *pFile;    pFile = fopen(Filename, "rbD");    if(!pFile) return false;	// calculate dimensions of heightmap    fseek (pFile, 0, SEEK_END);    m_Width = sqrt(ftell(pFile)/(double)Bpp);	m_Height = m_Width;	rewind(pFile);	// save format	m_Bpp = Bpp;	// allocate memory	m_Data = new unsigned char[m_Width*m_Height*m_Bpp];	if(!m_Data) return false;	// read image data	fread(m_Data, 1, m_Width*m_Height*m_Bpp, pFile);    // close file	fclose(pFile);    // success	return true;}bool CImage::SaveToFile(char *Filename){    // see if we have a .RAW file    if(strstr(Filename, ".raw"))    {        FILE *fp = fopen(Filename, "wbD");        if(!fp) return false;        fwrite(m_Data, 1, m_Width*m_Height*m_Bpp, fp);        fclose(fp);                return true;    }    // flip image if needed    if(strstr(Filename, ".tga") || strstr(Filename, ".bmp") || strstr(Filename, ".jpg"))	FlipVertically();    // set DevIL parameters and save to file    ILuint image;    ilGenImages(1, ℑ);    ilBindImage(image);    ilEnable(IL_FILE_OVERWRITE);    ilSetInteger(IL_NO_COMPRESSION, 1);    int Format;    if(m_Bpp == 3) Format = IL_RGB;    if(m_Bpp == 4) Format = IL_RGBA;    ilTexImage(m_Width, m_Height, 1, m_Bpp, Format, IL_UNSIGNED_BYTE, m_Data);    if(!ilSaveImage(Filename)) return false;}void CImage::Resize(int Width, int Height){    // check image allocation    if(!m_Data) return;    ILuint Image;    ilGenImages(1, &Image);    ilBindImage(Image);    if(m_Bpp == 1) ilTexImage(m_Width, m_Height, 1, m_Bpp, IL_LUMINANCE, IL_UNSIGNED_BYTE, m_Data);    else if(m_Bpp == 3) ilTexImage(m_Width, m_Height, 1, m_Bpp, IL_RGB, IL_UNSIGNED_BYTE, m_Data);    else if(m_Bpp == 4) ilTexImage(m_Width, m_Height, 1, m_Bpp, IL_RGBA, IL_UNSIGNED_BYTE, m_Data);    iluImageParameter(ILU_FILTER, ILU_SCALE_BSPLINE);    iluScale(Width, Height, 1);    unsigned char* Data = (unsigned char*)ilGetData();    if(!Data) return;    // free old image data    Release();        // save new image properties    m_Width = ilGetInteger(IL_IMAGE_WIDTH);    m_Height = ilGetInteger(IL_IMAGE_HEIGHT);    m_Bpp = ilGetInteger(IL_IMAGE_BPP);    // create new image data    m_Data = new unsigned char[m_Width * m_Height * m_Bpp];    // copy resized data    for(int i = 0; i < m_Width * m_Height * m_Bpp; i++)        m_Data = Data;    // delete memory    ilDeleteImages(1, &Image);}void *CImage::Lock(){    // return pointer to image data    return (void *)m_Data;}int CImage::Width(){    return m_Width;}int CImage::Height(){    return m_Height;}int CImage::Bpp(){    return m_Bpp;}char *CImage::Filename(){    return m_Filename;}void CImage::FlipVertically(){    // check for allocation	if(!m_Data) return;	// flip image data vertically	for(int i = 0; i < m_Width; i++)	{		for(int j = 0; j < m_Height * 0.5f; j++)		{			for(int b = 0; b < m_Bpp; b++)			{				char T;			    T = m_Data[(j * m_Width + i) * m_Bpp + b];				m_Data[(j * m_Width + i) * m_Bpp + b] = m_Data[((m_Height - j - 1) * m_Width+i) * m_Bpp + b];				m_Data[((m_Height - j - 1) * m_Width + i) * m_Bpp + b] = T;			}		}	}}void CImage::FlipHorizontally(){    // check for allocation	if(!m_Data) return;    	// flip image data vertically	for(int i = 0; i < m_Height; i++)	{                    		for(int j = 0; j < m_Width * 0.5f; j++)		{			for(int b = 0; b < m_Bpp; b++)			{				char T;				T = m_Data[(i * m_Width + j) * m_Bpp + b];				m_Data[(i * m_Width + j) * m_Bpp + b] = m_Data[((m_Height - i - 1) * m_Width + j) * m_Bpp + b];				m_Data[((m_Height - i - 1) * m_Width + j) * m_Bpp + b] = T;			}		}	}}void CImage::SwapRB(){    // check for allocation	if(!m_Data) return;	// swap R and B components	for(int i =0 ; i < m_Width * m_Height; i++)	{		char T;		T = m_Data[i * m_Bpp];		m_Data[i * m_Bpp + 0] = m_Data[i* m_Bpp + 2];		m_Data[i * m_Bpp + 2] = T;	}}

inline int GetRed(int x, int z){   int BPP = m_Bpp/8;   return m_Data[x+z*m_Width*BPP*2]*pow(2,16)+m_Data[x+z*m_Width*BPP];}