Find all integer coordinates in a given radius

Question

Given a two-dimensional coordinate system how can I find all points with integer coordinates in a radius from a given point? I want the points as x-coordinate and y-coordina

Answer 1

Simplest solution: take a square and filter it:

Point point(100, 100);
for(int x = -radius; x <= radius; ++x)
for(int y = -radius; y <= radius; ++y)
if(x*x + y*y <= radius* radius)   {
    points.insert(Point(x + point.x, y + point.y));
}