BSArch/04/bmp_fractal.c

/* Betriebssystem & Middleware
 *
 * Betriebssystemarchitektur SS 2006
 *
 * Uebung 4.4 
 */
#include <stdio.h>
#include <errno.h>

#define XSIZE 500
#define YSIZE 500
#include "algorithm.h"

/* BMP Header */
unsigned char header[54]={0x42,0x4d,              // signature BM
                            0xe6,0x71,0x0b,0x0,   // filesize 750054
                            0x0,0x0,0x0,0x0,      // reserved 
                            0x36,0x0,0x0,0x0,     // image offset 54
                            0x28,0x0,0x0,0x0,     // size of header follows 40
                            0xf4,0x1,0x0,0x0,     // with of image 500
                            0xf4,0x1,0x0,0x0,     // height of image 500
                            0x1,0x0,              // number of planes  1
                            0x18,0x0,             // number of pixel 24
                            0x0,0x0,0x0,0x0,      // compression  
                            0xb0,0x71,0x0b,0x0,   // size of image 750000
                            0x0,0x0,0x0,0x0,      // xres
                            0x0,0x0,0x0,0x0,      // yres   
                            0x0,0x0,0x0,0x0,      // number of colortables    
                            0x0,0x0,0x0,0x0       // number of important colors
                        };

int main(int argc, char *argv[])
{
    FILE *fd;
    int len,x,y;
    char bgr[3];
    short svalue;
    int   lvalue;
    //unsigned char header[54],*ptr=&header[0];
      
    fd=fopen("test.bmp","wb+");
    if(NULL==fd)
    {
        perror("open"); exit(1);
    }

    len=fwrite(header,1,sizeof(header),fd); //write header
    
    if(-1==len || len!=sizeof(header))
    {
        perror("write");
        exit(2);
    }
    
    for(y=YSIZE-1;y>=0;y--)
    {
            for(x=0;x<XSIZE;x++)
            {
                getColorValuesAt(x * (2.0 / XSIZE) - 1.5, y * (2.0 / YSIZE) - 1.0,&bgr[2],&bgr[1],&bgr[0]); 
                
                len=fwrite(bgr,1,3,fd);
                if(-1==len || len!=3)
                {
                    perror("write");
                    exit(4);
                }
            }
            /*no padding required because 1500%4 =0*/
    }        
    fclose(fd);
    
}
1	/* Betriebssystem & Middleware
2	*
3	* Betriebssystemarchitektur SS 2006
4	*
5	* Uebung 4.4
6	*/
7	#include <stdio.h>
8	#include <errno.h>
9
10	#define XSIZE 500
11	#define YSIZE 500
12	#include "algorithm.h"
13
14	/* BMP Header */
15	unsigned char header[54]={0x42,0x4d, // signature BM
16	0xe6,0x71,0x0b,0x0, // filesize 750054
17	0x0,0x0,0x0,0x0, // reserved
18	0x36,0x0,0x0,0x0, // image offset 54
19	0x28,0x0,0x0,0x0, // size of header follows 40
20	0xf4,0x1,0x0,0x0, // with of image 500
21	0xf4,0x1,0x0,0x0, // height of image 500
22	0x1,0x0, // number of planes 1
23	0x18,0x0, // number of pixel 24
24	0x0,0x0,0x0,0x0, // compression
25	0xb0,0x71,0x0b,0x0, // size of image 750000
26	0x0,0x0,0x0,0x0, // xres
27	0x0,0x0,0x0,0x0, // yres
28	0x0,0x0,0x0,0x0, // number of colortables
29	0x0,0x0,0x0,0x0 // number of important colors
30	};
31
32	int main(int argc, char *argv[])
33	{
34	FILE *fd;
35	int len,x,y;
36	char bgr[3];
37	short svalue;
38	int lvalue;
39	//unsigned char header[54],*ptr=&header[0];
40
41	fd=fopen("test.bmp","wb+");
42	if(NULL==fd)
43	{
44	perror("open"); exit(1);
45	}
46
47	len=fwrite(header,1,sizeof(header),fd); //write header
48
49	if(-1==len \|\| len!=sizeof(header))
50	{
51	perror("write");
52	exit(2);
53	}
54
55	for(y=YSIZE-1;y>=0;y--)
56	{
57	for(x=0;x<XSIZE;x++)
58	{
59	getColorValuesAt(x * (2.0 / XSIZE) - 1.5, y * (2.0 / YSIZE) - 1.0,&bgr[2],&bgr[1],&bgr[0]);
60
61	len=fwrite(bgr,1,3,fd);
62	if(-1==len \|\| len!=3)
63	{
64	perror("write");
65	exit(4);
66	}
67	}
68	/no padding required because 1500%4 =0/
69	}
70	fclose(fd);
71
72	}
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