//======================================================================
/**
*??@file??????CBMPLoader.cpp
*
*??項目描述：?紋理映射
*??文件描述:??載入位圖類?
*??適用平臺：?Windows98/2000/NT/XP
*??
*??作者：?????WWBOSS
*??電子郵件:??wwboss123@gmail.com
*??創(chuàng)建日期：?2006-11-23	
*??修改日期：?2007-07-10
*	
*/																			
//======================================================================

#include“CBMPLoader.h“??????????????/**
/**?構造函數(shù)?*/
CBMPLoader::CBMPLoader（）
{
???/**?初始化成員值為0?*/
	image?=?0;
	imageWidth?=?0;
	imageHeight?=?0;
}

/**?析構函數(shù)?*/
CBMPLoader::~CBMPLoader（）
{
???FreeImage（）;?/**}

/**?裝載一個位圖文件?*/
bool?CBMPLoader::LoadBitmap（const?char?*file）
{
	FILE?*pFile?=?0;?/**	
	/**?創(chuàng)建位圖文件信息和位圖文件頭結構?*/
	BITMAPINFOHEADER?bitmapInfoHeader;
	BITMAPFILEHEADER?header;
??
	unsigned?char?textureColors?=?0;/**
???/**?打開文件并檢查錯誤?*/
	pFile?=?fopen（file?“rb“）;
		if（pFile?==?0）?return?false;

	/**?讀入位圖文件頭信息?*/?
	fread（&header?sizeof（BITMAPFILEHEADER）?1?pFile）;
	
	/**?檢查該文件是否為位圖文件?*/
	if（header.bfType?!=?BITMAP_ID）
	???{
		???fclose（pFile）;?????????????/**		???return?false;
	???}

	/**?讀入位圖文件信息?*/
	fread（&bitmapInfoHeader?sizeof（BITMAPINFOHEADER）?1?pFile）;

	/**?保存圖像的寬度和高度?*/
	imageWidth?=?bitmapInfoHeader.biWidth;
????imageHeight?=?bitmapInfoHeader.biHeight;

????/**?確保讀取數(shù)據(jù)的大小?*/
???if（bitmapInfoHeader.biSizeImage?==?0）
??????bitmapInfoHeader.biSizeImage?=?bitmapInfoHeader.biWidth?*
??????bitmapInfoHeader.biHeight?*?3;

	/**?將指針移到數(shù)據(jù)開始位置?*/
	fseek（pFile?header.bfOffBits?SEEK_SET）;

	/**?分配內存?*/
	image?=?new?unsigned?char[bitmapInfoHeader.biSizeImage];

	/**?檢查內存分配是否成功?*/
	if（!image）????????????????????????/**	???{
		???delete[]?image;
		???fclose（pFile）;
		???return?false;
	???}

	/**?讀取圖像數(shù)據(jù)?*/
	fread（image?1?bitmapInfoHeader.biSizeImage?pFile）;

	/**?將圖像顏色數(shù)據(jù)格式進行交換由BGR轉換為RGB?*/
	for（int?index?=?0;?index?	???{
		???textureColors?=?image[index];
		???image[index]?=?image[index?+?2];
		???image[index?+?2]?=?textureColors;
	???}
??
	fclose（pFile）;???????/**	return?true;?????????/**}

/**?載入位圖文件，并創(chuàng)建紋理?*/
bool?CBMPLoader::Load（const?char*?fileName）
{
	if（!LoadBitmap（fileName））
	{
		MessageBox（NULL“載入位圖文件失敗!““錯誤“MB_OK）;
		exit（0）;
	}
	/**?生成紋理對象名稱?*/
	glGenTextures（1?&ID）;
???
????/**?創(chuàng)建紋理對象?*/
????glBindTexture（GL_TEXTURE_2D?ID）;
	
	/**?控制濾波?*/
	glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_MIN_FILTER?GL_LINEAR）;
	glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_MAG_FILTER?GL_LINEAR）;
????glTexParameteri（GL_TEXTURE_2DGL_TEXTURE_WRAP_SGL_REPEAT）;
????glTexParameteri（GL_TEXTURE_2DGL_TEXTURE_WRAP_TGL_REPEAT）;
???
	/**?創(chuàng)建紋理?*/
???	gluBuild2DMipmaps（GL_TEXTURE_2D?GL_RGB?imageWidth
	??????????????????imageHeight?GL_RGB?GL_UNSIGNED_BYTE
	??????????????????image）;
???return?true;
}

/**?釋放內存?*/

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3437??2007-11-13?11:05??Texture\CBMPLoader.cpp

?????文件???????1128??2007-11-13?11:05??Texture\CBMPLoader.h

?????文件???????2763??2007-11-13?11:05??Texture\Debug\BuildLog.htm

?????文件??????15335??2007-11-13?11:05??Texture\Debug\CBMPLoader.obj

?????文件??????29978??2007-11-13?11:05??Texture\Debug\GLframe.obj

?????文件??????23475??2007-11-13?11:05??Texture\Debug\GLWindow.obj

?????文件???????8733??2007-11-13?11:05??Texture\Debug\stdafx.obj

?????文件?????167936??2007-11-13?11:05??Texture\Debug\Texture.exe

?????文件?????644068??2007-11-13?11:05??Texture\Debug\Texture.ilk

?????文件??????33793??2007-11-13?11:05??Texture\Debug\Texture.obj

?????文件?????527360??2007-11-13?11:05??Texture\Debug\Texture.pdb

?????文件??????15749??2007-11-13?11:05??Texture\Debug\TGALoader.obj

?????文件?????363520??2007-11-13?11:05??Texture\Debug\vc70.idb

?????文件?????102400??2007-11-13?11:05??Texture\Debug\vc70.pdb

?????文件??????10261??2007-11-13?11:05??Texture\GLframe.cpp

?????文件???????3770??2007-11-13?11:05??Texture\GLframe.h

?????文件???????9540??2007-11-13?11:05??Texture\GLWindow.cpp

?????文件???????2322??2007-11-13?11:05??Texture\GLWindow.h

?????文件?????193590??2007-11-13?11:05??Texture\image.bmp

?????文件?????786450??2007-11-13?11:05??Texture\sphere.tga

?????文件?????????67??2007-11-13?11:05??Texture\stdafx.cpp

?????文件????????734??2007-11-13?11:05??Texture\stdafx.h

?????文件???????7171??2007-11-13?11:05??Texture\Texture.cpp

?????文件?????167936??2007-11-13?11:05??Texture\Texture.exe

?????文件???????2145??2007-11-13?11:05??Texture\Texture.h

?????文件?????224256??2007-11-13?11:05??Texture\Texture.ncb

?????文件????????903??2007-11-13?11:05??Texture\Texture.sln

?????文件???????8192??2007-11-13?11:05??Texture\Texture.suo

?????文件???????3983??2007-11-13?11:05??Texture\Texture.vcproj

?????文件???????3479??2007-11-13?11:05??Texture\TGALoader.cpp

............此處省略6個文件信息