### Circle packing #1

A probably pretty naive way of circle packing. Circles with a radius > hide_radius are not drawn.

#packing

```// Circle packing. Created by Reinder Nijhoff 2018
// @reindernijhoff
//
// https://turtletoy.net/turtle/f9915c1d89
//

Canvas.setpenopacity(1);

const canvas_size = 95;
const hide_radius = 5; // min=0, max=20, step=1
const max_radius = 10; // min=0.01, max=20, step=0.01
const min_radius = .3; // min=0.01, max=2, step=0.01
const shape = 1; // min=0, max=1, step=1 (Box, Circle)
const radius_decr = .99;
const max_tries = 5000;

const circles = [];

const turtle = new Turtle();

function add_circle(t, r) {
let coord_found = false;
let tries = 0;

while (!coord_found && tries < max_tries) {
tries ++;
const x = Math.random() * (canvas_size-r)*2 -canvas_size + r;
const y = Math.random() * (canvas_size-r)*2 -canvas_size + r;
const possible = circles.every(c => {
const dx = c[0] - x;
const dy = c[1] - y;
const dr = c[2] + r;

return dx**2 + dy**2 > dr**2 && (!shape || x**2 + y**2 < (canvas_size-r)**2);
});
if (possible && (!shape || x*x+y*y < (canvas_size-r)*(canvas_size-r))) {
coord_found = true;
if (r < hide_radius) {
draw_circle(x,y,t, r);
}
circles.push([x,y,r]);
return true;
}
}
return false;
}

function draw_circle(x,y,t, r) {
turtle.jump(x,y-r);
turtle.circle(r);
}

function walk(i) {