/* m0.c - Don Yang (uguu.org) 01/13/01 */ #include #include #define LIMIT 64 #define MAXCOLOR 252 #define WIDTH 640 #define HEIGHT 480 #define HEADSIZE 1078 unsigned char BMPHeader[HEADSIZE] = { 0x42, 0x4d, 0x36, 0xb4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x04, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x04, 0x00, 0x12, 0x0b, 0x00, 0x00, 0x12, 0x0b, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x02, 0x02, 0x02, 0x00, 0x03, 0x03, 0x03, 0x00, 0x04, 0x04, 0x04, 0x00, 0x05, 0x05, 0x05, 0x00, 0x06, 0x06, 0x06, 0x00, 0x07, 0x07, 0x07, 0x00, 0x08, 0x08, 0x08, 0x00, 0x09, 0x09, 0x09, 0x00, 0x0a, 0x0a, 0x0a, 0x00, 0x0b, 0x0b, 0x0b, 0x00, 0x0c, 0x0c, 0x0c, 0x00, 0x0d, 0x0d, 0x0d, 0x00, 0x0e, 0x0e, 0x0e, 0x00, 0x0f, 0x0f, 0x0f, 0x00, 0x10, 0x10, 0x10, 0x00, 0x11, 0x11, 0x11, 0x00, 0x12, 0x12, 0x12, 0x00, 0x13, 0x13, 0x13, 0x00, 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0x90, 0x00, 0x91, 0x91, 0x91, 0x00, 0x92, 0x92, 0x92, 0x00, 0x93, 0x93, 0x93, 0x00, 0x94, 0x94, 0x94, 0x00, 0x95, 0x95, 0x95, 0x00, 0x96, 0x96, 0x96, 0x00, 0x97, 0x97, 0x97, 0x00, 0x98, 0x98, 0x98, 0x00, 0x99, 0x99, 0x99, 0x00, 0x9a, 0x9a, 0x9a, 0x00, 0x9b, 0x9b, 0x9b, 0x00, 0x9c, 0x9c, 0x9c, 0x00, 0x9d, 0x9d, 0x9d, 0x00, 0x9e, 0x9e, 0x9e, 0x00, 0x9f, 0x9f, 0x9f, 0x00, 0xa0, 0xa0, 0xa0, 0x00, 0xa1, 0xa1, 0xa1, 0x00, 0xa2, 0xa2, 0xa2, 0x00, 0xa3, 0xa3, 0xa3, 0x00, 0xa4, 0xa4, 0xa4, 0x00, 0xa5, 0xa5, 0xa5, 0x00, 0xa6, 0xa6, 0xa6, 0x00, 0xa7, 0xa7, 0xa7, 0x00, 0xa8, 0xa8, 0xa8, 0x00, 0xa9, 0xa9, 0xa9, 0x00, 0xaa, 0xaa, 0xaa, 0x00, 0xab, 0xab, 0xab, 0x00, 0xac, 0xac, 0xac, 0x00, 0xad, 0xad, 0xad, 0x00, 0xae, 0xae, 0xae, 0x00, 0xaf, 0xaf, 0xaf, 0x00, 0xb0, 0xb0, 0xb0, 0x00, 0xb1, 0xb1, 0xb1, 0x00, 0xb2, 0xb2, 0xb2, 0x00, 0xb3, 0xb3, 0xb3, 0x00, 0xb4, 0xb4, 0xb4, 0x00, 0xb5, 0xb5, 0xb5, 0x00, 0xb6, 0xb6, 0xb6, 0x00, 0xb7, 0xb7, 0xb7, 0x00, 0xb8, 0xb8, 0xb8, 0x00, 0xb9, 0xb9, 0xb9, 0x00, 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0xe3, 0x00, 0xe4, 0xe4, 0xe4, 0x00, 0xe5, 0xe5, 0xe5, 0x00, 0xe6, 0xe6, 0xe6, 0x00, 0xe7, 0xe7, 0xe7, 0x00, 0xe8, 0xe8, 0xe8, 0x00, 0xe9, 0xe9, 0xe9, 0x00, 0xea, 0xea, 0xea, 0x00, 0xeb, 0xeb, 0xeb, 0x00, 0xec, 0xec, 0xec, 0x00, 0xed, 0xed, 0xed, 0x00, 0xee, 0xee, 0xee, 0x00, 0xef, 0xef, 0xef, 0x00, 0xf0, 0xf0, 0xf0, 0x00, 0xf1, 0xf1, 0xf1, 0x00, 0xf2, 0xf2, 0xf2, 0x00, 0xf3, 0xf3, 0xf3, 0x00, 0xf4, 0xf4, 0xf4, 0x00, 0xf5, 0xf5, 0xf5, 0x00, 0xf6, 0xf6, 0xf6, 0x00, 0xf7, 0xf7, 0xf7, 0x00, 0xf8, 0xf8, 0xf8, 0x00, 0xf9, 0xf9, 0xf9, 0x00, 0xfa, 0xfa, 0xfa, 0x00, 0xfb, 0xfb, 0xfb, 0x00, 0xfc, 0xfc, 0xfc, 0x00, 0xfd, 0xfd, 0xfd, 0x00, 0xfe, 0xfe, 0xfe, 0x00, 0xff, 0xff, 0xff, 0x00}; static unsigned char Image[WIDTH][HEIGHT]; /************************************************************** mandelbrot */ static void mandelbrot(double rmin, double rmax, double imin, double imax) { double r, i, r0, i0, r2, i2, t; int x, y, color; for(x = 0; x < WIDTH; x++) { r0 = ((rmax - rmin) * x) / WIDTH + rmin; for(y = 0; y < HEIGHT; y++) { i = i0 = ((imax - imin) * y) / HEIGHT + imin; r = r0; for(color = MAXCOLOR; color > 0; color -= 4) { t = (r2 = r * r) - (i2 = i * i) + r0; i = 2 * r * i + i0; r = t; if( r2 + i2 >= LIMIT ) break; } Image[x][y] = (unsigned char)color; } } } /* mandelbrot() */ /******************************************************************** main */ int main(int argc, char **argv) { FILE *outfile; int x, y; if( argc < 5 ) { puts("mandelbrot \n"); return 0; } mandelbrot(atof(argv[2]), atof(argv[3]), atof(argv[4]), atof(argv[5])); if( (outfile = fopen(argv[1], "wb+")) == NULL ) { printf("Can not create %s\n", argv[1]); return 1; } fwrite(BMPHeader, HEADSIZE, 1, outfile); for(y = HEIGHT - 1; y >= 0; y--) { for(x = 0; x < WIDTH; x++) fputc(Image[x][y], outfile); } fclose(outfile); return 0; } /* main() */