#include <stdio.h>
#include <math.h>
On Sun, May 15, 2022, 11:10 AM Undiscussed Horrific Abuse, One Victim of
Many <[email protected]> wrote:
> 0 0 0 0 0
> 0 0 0 0 0
> 0 0 0 0 0
> 0 0 0 0 0
> 0 0 0 0 0
>
int grid[5*5] = 0;
struct pt {
int x;
int y;
};
void plot(pt p)
{
grid[p.x+p.y*5] = 1;
}
> pt1 = 2,1
> pt2 = 4,3
> pt3 = 0,3
>
p pt1 = {2,1};
p pt2 = {4,3};
p pt3 = {0,3};
> line(a,b):
>
void line(pt a, pt b)
{
> change = b/a
>
pt change;
change.x = b.x - a.x;
change.y = b.y - a.y;
> ct = max(abs(change))
>
int ctx = abs(change.x)
int cty = abs(change.y)
int ct = ctx > cty ? ctx : cty;
> for t = 0..ct inclusive:
>
for (double t = 0; t <= ct; ++ t) {
> plot(a + change * t / ct)
>
plot(a.x + change.x * t / ct, a.y + change.y * t / ct);
}
>
> line(pt1,pt2)
> line(pt2,pt3)
> line(pt3,pt1)
>
int main()
{
line(pt1, pt2);
line(pt2, pt3);
line(pt3, pt1);
for (int x = 0; x < 5; x ++) {
for (int y = 0; y < 5; y ++)
printf("%d", grid[x + y * 5]);
printf("\n");
}
}
>
