#include“bmp_geotry.h“
void?BmpRead（Bitmap*bmpconst?char?*str）
{???
	FILE*fp=NULL;
	if（（fp=fopen（str“r“））==NULL）
	{
		printf（“can?not?open?the?image“）;
		return?;
	}
	ULONG?width=0height=0line_width=0off_bits=0;
	USHORT?bit_count=0pal_length=0;

	fseek（fp100）;
	fread（&off_bits41fp）;
	fseek（fp180）;
	fread（&width41fp）;
	fread（&height41fp）;
	fseek（fp280）;
	fread（&bit_count21fp）;
	//調色板數據讀取
	pal_length=off_bits-54;
	if（bit_count==8）
	{
		bmp->palette=（PUCHAR）malloc（pal_length*sizeof（UCHAR））;
		if（!bmp->palette）
		printf（“palette?have?no?memeory“）;
		
	}
	else?
	{
		bmp->palette=0;
	}

	if（bmp->palette）
	{
		fseek（fp540）;
		fread（bmp->palettepal_length1fp）;
	}

	line_width=（width*bit_count+31）/32*4;
	//將圖像文件的數據存到bmp結構體中
	bmp->line_width=line_width;
	bmp->width=width;
	bmp->height=height;
	bmp->bit_count=bit_count;
	bmp->pal_length=pal_length;

	bmp->ptr=（PUCHAR）malloc（line_width*height*sizeof（UCHAR））;
	if（!bmp->ptr）
	{
	printf（“can?not?allocnate?for?the?bitmap.\n“）;
	bmp->width=0;
	bmp->bit_count=0;
	bmp->height=0;
	}

	fseek（fpoff_bits0）;
	fread（bmp->ptrline_width*height1fp）;
	printf（“Bitmap?Width?:%ld\n“bmp->width）;
????printf（“Bitmap?Heigh?:%ld\n“bmp->height）;
????printf（“Bitmap?BitCount:%d\n“bmp->bit_count）;

}

void?BmpSaved（const?char?*strBitmap?bmp）
{
	FILE*fp=NULL;
	ULONG?dw=0;
	USHORT?w=0;
	if（（fp=fopen（str“wb“））==NULL）
	{
		printf（“fail?to?save“）;

	}
	?w=19778;
??fwrite（&w21fp）;
??dw=14;
??fwrite（&dw41fp）;
??w=0;
??fwrite（&w21fp）;
??fwrite（&w21fp）;
??if（bmp.bit_count==8）?dw=1078;
??else?dw=54;
??fwrite（&dw41fp）;
??dw=40;
??fwrite（&dw41fp）;
??dw=bmp.width;
??fwrite（&dw41fp）;
??dw=bmp.height;
??fwrite（&dw41fp）;
??w=0;
??fwrite（&w21fp）;
??w?=?bmp.bit_count;
??fwrite（?&w?2?1?fp?）;//寫入位數
??dw?=?0;
??fwrite（?&dw?4?1?fp?）;
??dw?=?bmp.height?*?（?bmp.width?*?bmp.bit_count?+?31?）?/?32?*?4;//求出像素區的大小
??fwrite（?&dw?4?1?fp?）;//寫入像素區的大小的值
??dw?=?0;
??fwrite（?&dw?4?1?fp?）;
??fwrite（?&dw?4?1?fp?）;
??fwrite（?&dw?4?1?fp?）;
??fwrite（?&dw?4?1fp?）;

??if（?bmp.palette?!=?0?）
	{
	????fwrite（?bmp.palette?1024?1?fp?）;
	}

??dw?=?bmp.height?*?（?bmp.width?*?bmp.bit_count?+?31?）?/?32?*?4;
??fwrite（?bmp.ptr?dw?1?fp?）;//寫入圖像部分
??fclose（fp）;


}
void?BilinearStretch（Bitmap?bmpdouble?Scaleconst?char?*str）
{????
	
	//為變換后的圖像申請內存
	ULONG?dwidth=（ULONG）（bmp.width*Scale）;
	ULONG?dheight=（ULONG）（bmp.height*Scale）;
	ULONG?line_width=（dwidth*bmp.bit_count+31）/32*4;
	long?sum=dheight*line_width;
	PUCHAR?dst=（PUCHAR）malloc（sum*Scale*Scale*sizeof（UCHAR））;

	double?ratio=1/Scale;//反向映射比列
	int?xy?ij;//循環變量
	double?tmpxtmpy;
	double?uv;
	double?final;
	UCHAR?color[2][2];
	int?nPos=0;
	

	if（Scale<0）?return;
	if（Scale==1）
	{
	??BmpSaved（str?bmp）;
	??return;
	}
???
	
	for（j=0;j		for（i=0;i		{
			tmpx=i*ratio;
			tmpy=j*

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-05-30?14:29??graphics\
?????目錄???????????0??2013-05-29?13:54??graphics\Debug\
?????文件???????33792??2013-05-30?10:52??graphics\Debug\graphics.exe
?????文件??????375216??2013-05-30?10:52??graphics\Debug\graphics.ilk
?????文件??????560128??2013-05-30?10:52??graphics\Debug\graphics.pdb
?????目錄???????????0??2013-05-30?10:26??graphics\graphics\
?????目錄???????????0??2013-05-30?10:52??graphics\graphics\Debug\
?????文件???????14528??2013-05-30?10:52??graphics\graphics\Debug\CL.read.1.tlog
?????文件????????1286??2013-05-30?10:52??graphics\graphics\Debug\CL.write.1.tlog
?????文件???????20458??2013-05-30?10:51??graphics\graphics\Debug\bmp_geotry.obj
?????文件????????1958??2013-05-30?10:52??graphics\graphics\Debug\cl.command.1.tlog
?????文件?????????406??2013-05-09?20:50??graphics\graphics\Debug\graphics.exe.embed.manifest
?????文件?????????472??2013-05-09?20:50??graphics\graphics\Debug\graphics.exe.embed.manifest.res
?????文件?????????381??2013-05-30?10:52??graphics\graphics\Debug\graphics.exe.intermediate.manifest
?????文件??????????54??2013-05-30?10:52??graphics\graphics\Debug\graphics.lastbuildstate
?????文件????????2050??2013-05-30?10:52??graphics\graphics\Debug\graphics.log
?????文件?????????206??2013-05-09?20:50??graphics\graphics\Debug\graphics_manifest.rc
?????文件???????19731??2013-05-09?20:50??graphics\graphics\Debug\graphics_outtext.obj
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link-cvtres.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link-cvtres.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3368-cvtres.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3368-cvtres.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3368.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3368.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3944-cvtres.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3944-cvtres.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3944.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.3944.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.5956-cvtres.read.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.5956-cvtres.write.1.tlog
?????文件???????????2??2013-05-30?10:52??graphics\graphics\Debug\link.5956.read.1.tlog
............此處省略28個文件信息