C++ 用RGB 三种颜色绘图

#include <iostream>
#include <cmath>
#include <cstdlib>
#define DIM 1024
#define DM1 (DIM-1)
#define _sq(x) ((x)*(x)) // square
#define _cb(x) abs((x)*(x)*(x)) // absolute value of cube
#define _cr(x) (unsigned char)(pow((x),1.0/3.0)) // cube root

unsigned char GR(int,int);
unsigned char BL(int,int);

unsigned char RD(int i,int j){
    float s=./(j+);
    float y=(j+sin((i*i+_sq(j-)*)/./DIM)*)*s;
    return (int((i+DIM)*s+y)%+int((DIM*-i)*s+y)%)*;
}
unsigned char GR(int i,int j){
    float s=./(j+);
    float y=(j+sin((i*i+_sq(j-)*)/./DIM)*)*s;
    return (int(*((i+DIM)*s+y))%+int(*((DIM*-i)*s+y))%)*;
}
unsigned char BL(int i,int j){
    float s=./(j+);
    float y=(j+sin((i*i+_sq(j-)*)/./DIM)*)*s;
    return (int(*((i+DIM)*s+y))%+int(*((DIM*-i)*s+y))%)*;
}
void pixel_write(int,int);
FILE *fp;
int main(){
    fp = fopen("MathPic.png","wb");
    fprintf(fp, "P6\n%d %d\n255\n", DIM, DIM);
    for(int j=;j<DIM;j++)
        for(int i=;i<DIM;i++)
            pixel_write(i,j);
    fclose(fp);
    return ;
}
void pixel_write(int i, int j){
    static unsigned char color[];
    color[] = RD(i,j)&;
    color[] = GR(i,j)&;
    color[] = BL(i,j)&;
    fwrite(color, , , fp);
}

# 上边代码保存为 draw.cpp  编译与运行

g++ draw.cpp -o draw  (编译)

./draw  (运行)

然后当前目录就会出现 MathPic.png

http://www.matrix67.com/blog/archives/6039

http://codegolf.stackexchange.com/questions/35569/tweetable-mathematical-art