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print"P3 90 60 1"
for p in range(5400):c=(p%90-45)**2+(p/90-30)**2>324;print 1,+c,+c

Code: Alles auswählen

print'P3 90 60 1'
for b in range(-30,30):
 for c in range(-45,45):a=(b*b+c*c>324)+0;print'1',a,a

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s='P3 90 60 1'
for i in range(5400):x=i%90-45;y=i/90-30;s+=' 1'+' %i'%(x*x+y*y>324)*2
print s

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10 rem@ £protocol
12 rem@ £fastfor:£shortif:£constant w,h,cx,cy,r,sc,cr
14 rem@ £byte c=2:£word x=fast,y=fast,o:£integer xx,yy
100 ti$="000000"
105 w=40:h=25:cx=int(w/2):cy=int(h/2):r=int((w/4)^2):sc=1024:cr=55296
110 for y=0 to h-1:for x=0 to w-1
120 c=2:xx=x-cx:yy=y-cy:if xx*xx+yy*yy>=r then c=1
130 o=w*y+x:poke sc+o,81:poke cr+o,c:next x,y:print"{home}"ti$
150 goto 150

Code: Alles auswählen

#include <stdint.h>
#include <string.h>

#define WIDTH           40
#define HEIGHT          25
#define X_CENTER        (WIDTH / 2)
#define Y_CENTER        (HEIGHT / 2)
#define RADIUS          (WIDTH / 4 * WIDTH / 4)
#define COLOR_WHITE     1
#define COLOR_RED       2
#define SCREEN_CODE     160

int main(void)
{
    uint8_t x, y;
    uint16_t xx, yy;
    register uint8_t *color_ram = (void*) 0xd800;
    
    memset((void*) 0x400, SCREEN_CODE, 1000);
    for (y = 0; y < HEIGHT; ++y) {
        for (x = 0; x < WIDTH; ++x) {
            xx = x - X_CENTER;
            yy = y - Y_CENTER;
            *color_ram++ = (xx * xx + yy * yy >= RADIUS)
                ? COLOR_WHITE : COLOR_RED;
        }
    }
    return 0;
}