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bmpWriting_v1_1_4.h
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bmpWriting_v1_1_4.h
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#ifndef _BMP_H
#define _BMP_H 0x010104
#include <stdio.h>
#include <malloc.h>
#ifdef __cplusplus
extern "C" {
#endif
char bmpHeader[] = {
0x42, 0x4d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 7
0x00, 0x00, 0x36, 0x00, 0x00, 0x00, 0x28, 0x00, //15
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //23
0x00, 0x00, 0x01, 0x00, 0x18, 0x00, 0x00, 0x00, //31
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //39
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //47
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 //53
};
char pad[3] = {0, 0, 0};
typedef unsigned long _ulong;
struct _Bitmap {
FILE* file;
int flag;
int readable;
_ulong width;
_ulong height;
_ulong padSize;
_ulong rowSize;
_ulong dataSize;
_ulong fileSize;
};
typedef struct _Bitmap BITMAP;
BITMAP* BitmapHeaderInit(const char* filename, int readable, _ulong width, _ulong height) {
BITMAP *bitmap = (BITMAP*)malloc(sizeof(BITMAP));
bitmap -> file = fopen(filename, readable?"wb+":"wb");
bitmap -> flag = ferror(bitmap -> file) ? 0 : 1;
bitmap -> readable = readable;
bitmap -> width = width;
bitmap -> height = height;
bitmap -> padSize = width % 4;
bitmap -> rowSize = width * 3 + bitmap -> padSize;
bitmap -> dataSize = bitmap -> rowSize * height;
bitmap -> fileSize = bitmap -> dataSize + 54;
*(_ulong*)(bmpHeader + 0x02) = bitmap -> fileSize;
*(_ulong*)(bmpHeader + 0x12) = width;
*(_ulong*)(bmpHeader + 0x16) = height;
*(_ulong*)(bmpHeader + 0x22) = bitmap -> dataSize;
fwrite(bmpHeader, 54, 1, bitmap -> file);
fflush(bitmap -> file);
return bitmap;
}
BITMAP* BitmapInit(char* filename, int readable, _ulong width, _ulong height, _ulong bgcolor) {
BITMAP *bitmap = BitmapHeaderInit(filename, readable, width, height);
_ulong i, j;
for(i=0; i<height; ++i) {
for(j=0; j<width; ++j){
fwrite((char*)&bgcolor, 3, 1, bitmap -> file);
}
fwrite(pad, bitmap -> padSize, 1, bitmap -> file);
fflush(bitmap -> file);
}
return bitmap;
}
inline void BitmapSetAt(BITMAP* bitmap, _ulong x, _ulong y, _ulong color) {
fseek(bitmap -> file, 54 + bitmap -> rowSize * x + 3 * y, 0);
fwrite((char*)&color, 3, 1, bitmap -> file);
}
inline void BitmapSetThrough(BITMAP* bitmap, _ulong color) {
fwrite((char*)&color, 3, 1, bitmap -> file);
}
inline void BitmapGetAt(BITMAP* bitmap, _ulong x, _ulong y, _ulong* color) {
fseek(bitmap -> file, 54 + bitmap -> rowSize * x + 3 * y, 0);
fread((char*)color, 3, 1, bitmap -> file);
}
inline void BitmapGetThrough(BITMAP* bitmap, _ulong* color) {
fread((char*)color, 3, 1, bitmap -> file);
}
inline void BitmapWritePad(BITMAP* bitmap) {
fwrite(pad, bitmap -> padSize, 1, bitmap -> file);
}
inline void BitmapSeek(BITMAP* bitmap, _ulong x, _ulong y) {
fseek(bitmap -> file, 54 + bitmap -> rowSize * x + 3 * y, 0);
}
inline void BitmapFlush(BITMAP* bitmap) {
fflush(bitmap -> file);
}
inline void BitmapClose(BITMAP* bitmap) {
fclose(bitmap -> file);
}
#ifndef _BITMAP_CORE
inline _ulong BitmapRainbowColor(_ulong x) {
switch(x / 15) {
case 0: return 0xff00ff | (15-x) * 17 << 8;
case 1: return 0x0000ff | (30-x) * 17 << 16;
case 2: return 0x0000ff | (x-30) * 17 << 8;
case 3: return 0x00ff00 | (60-x) * 17;
case 4: return 0x00ff00 | (x-60) * 17 << 16;
case 5: return 0xff0000 | (90-x) * 17 << 8;
case 6: return 0xff0000 | (x-90) * 17 << 16;
case 7: return (120-x) * 17 << 16;
default:return 0x000000;
}
return 0;
}
inline _ulong BitmapReversedRainbowColor(_ulong x) {
switch(x / 15) {
case 0: return 0xff00ff | (15-x) * 17 << 8;
case 1: return 0xff0000 | (30-x) * 17;
case 2: return 0xff0000 | (x-30) * 17 << 8;
case 3: return 0x00ff00 | (60-x) * 17 << 16;
case 4: return 0x00ff00 | (x-60) * 17;
case 5: return 0x0000ff | (90-x) * 17 << 8;
case 6: return 0x0000ff | (x-90) * 17;
case 7: return (120-x) * 17;
default:return 0x000000;
}
return 0;
}
inline _ulong BitmapLongRainbowColor(_ulong x) {
switch(x / 17) {
case 0: return 0xff00ff | (17-x) * 15 << 8;
case 1: return 0x0000ff | (34-x) * 15 << 16;
case 2: return 0x0000ff | (x-34) * 15 << 8;
case 3: return 0x00ff00 | (68-x) * 15;
case 4: return 0x00ff00 | (x-68) * 15 << 16;
case 5: return 0xff0000 | (102-x)* 15 << 8;
case 6: return 0xff0000 | (x-102)* 15 << 16;
case 7: return (136-x) * 15 << 16;
default:return 0x000000;
}
return 0;
}
inline _ulong BitmapLongReversedRainbowColor(_ulong x) {
switch(x / 17) {
case 0: return 0xff00ff | (17-x) * 15 << 8;
case 1: return 0xff0000 | (34-x) * 15;
case 2: return 0xff0000 | (x-34) * 15 << 8;
case 3: return 0x00ff00 | (68-x) * 15 << 16;
case 4: return 0x00ff00 | (x-68) * 15;
case 5: return 0x0000ff | (102-x)* 15 << 8;
case 6: return 0x0000ff | (x-102)* 15;
case 7: return (136-x) * 15;
default:return 0x000000;
}
return 0;
}
inline double BitmapConvertCenterLocalCoord(double midpoint, double ratio, double width, double coord) {
return midpoint + (coord - width / 2) / ratio;
}
inline double BitmapConvertEdgeLocalCoord(double edge, double ratio, double coord) {
return edge + coord / ratio;
}
#endif
#ifdef __cplusplus
}
#endif
#endif