www.pudn.com > ZoomPerspective.rar > TEXTURE.H

//******************************************** 
// Texture.h 
//******************************************** 
// class CTexture 
//******************************************** 
// This object stores a bitmap image used as 
// an OpenGL texture. 
// Files are stored as .bmp format.  
// Depth are currently 24 or 32 bits, 
// Modes are : RGB, RGBA (alpha layer). 
//******************************************** 
// pierre.alliez@cnet.francetelecom.fr 
// Created : 17/12/97 
// Modified : 18/02/98 
//******************************************** 
 
#ifndef _TEXTURE_ 
#define _TEXTURE_ 
 
class CTexture : public CObject 
{ 
 
// Members datas 
private : 
 
	unsigned char *m_pData;    // datas 
	unsigned int   m_Width;    // width (pixels) 
	unsigned int   m_Height;   // height (pixels) 
	unsigned int   m_Depth;    // bits per pixel  
	CString        m_FileName; // texture image file name 
 
	BITMAPINFOHEADER m_Header;      // image header (display on device context) 
	unsigned int     m_WidthByte32; // width (in bytes, and 32 bits aligned) 
 
public : 
 
	// Construction / destruction 
	CTexture(); 
	virtual ~CTexture(); 
 
	// File reading 
	int ReadFile(char *filename,unsigned int width=-1,unsigned int height=-1,unsigned int depth=-1); 
	int ReadFileBMP(char *filename); 
	int ReadFileRAW(char *filename,unsigned int width,unsigned int height,unsigned int depth); 
	 
	// File saving 
	int SaveFile(char *filename); 
	int SaveFileBMP(char *filename); 
	int SaveFileRAW(char *filename); 
   int ReadFromResource(const WORD ResourceId,LPCTSTR lpszSection); 
 
	// Datas (explicit inline functions) 
	unsigned char *GetData(void) { return m_pData; } 
	unsigned int GetWidth(void)  { return m_Width; } 
	unsigned int GetHeight(void) { return m_Height;} 
	unsigned int GetDepth(void)  { return m_Depth; } 
	CString GetFileName(void)    { return m_FileName; } 
 
	// Misc 
	int IsValid(); 
	int SameSize(CTexture *pTexture); 
	int BGRtoRGB(void); 
	int HigherPowerOfTwo(int value); 
	int LowerPowerOfTwo(int value); 
 
	// Updating 
	void UpdateWidthByte32(); 
	void UpdateHeader(); 
	unsigned int WidthByte32(unsigned int width,unsigned int depth); 
 
	// Alpha 
	int HasAlpha() { return (m_Depth == 32); } 
	int AddAlphaLayer(unsigned char alpha); 
	int SetAlphaLayer(unsigned char alpha); 
	int PutAlpha(CTexture *pTexture);	// Put an alpha layer from grey scale 
 
	// DuplicateMirror 
	int DuplicateMirror(int left=0,int top=0,int right=-1,int bottom=-1); 
	int DuplicateRepeatWidth(int left=0,int top=0,int right=-1,int bottom=-1); 
	int Extract(int left=0,int top=0,int right=-1,int bottom=-1); 
 
	// Display 
	int Draw(CDC *pDC,int xOffset=0,int yOffset=0, int width=-1, int height=-1); 
 
	// Buffer 
	int ReadBuffer(unsigned char *buffer, int width, int height, int depth); 
	int Grey(unsigned int x,unsigned int y); 
 
private : 
 
	// Memory 
	int Alloc(unsigned int width,unsigned int height,unsigned int depth); 
	void Free(void); 
   bool AllocImageData(unsigned int sizeData); 
 
}; 
 
#endif // _TEXTURE_