get_triangle_centroid :: (t: Triangle) -> Vec2s64 {
    return get_triangle_centroid(t.p1, t.p2, t.p3);
}

get_triangle_centroid :: (p1: Vec2s64, p2: Vec2s64, p3: Vec2s64) -> Vec2s64 {
    x := (p1.x + p2.x + p3.x) / 3;
    y := (p1.y + p2.y + p3.y) / 3;

    return .{x, y};
}

make_quad_from_rect :: (p1: Vec2s64, p2: Vec2s64) -> Quad {
    return .{
        .{ p1.x, p1.y },
        .{ p2.x, p1.y },
        .{ p2.x, p2.y },
        .{ p1.x, p2.y },
    };
}

scale :: (factor: float, pn: ..*Vec2s64) {
    for pn {
        it.x = cast(s64)(it.x * factor);
        it.y = cast(s64)(it.y * factor);
    }
}

scale :: (factor: float, t: *Triangle) {
    scale(factor, *t.p1, *t.p2, *t.p3);
}

scale :: (factor: float, q: *Quad) {
    scale(factor, *q.p1, *q.p2, *q.p3, *q.p4);
}