### Fork: Polar Flower

Just cartesian -> polar -> cartesian except r is substituted for 1/r.

```// Forked from "Polar Flower" by andrewl
// https://turtletoy.net/turtle/d5283441b1

// created by Andrew Lamoureux (andrewl) - 2019

Canvas.setpenopacity(1);
const turtle = new Turtle();
const zoom = 16
const xScale = 4.1; //min=0.1 max=40 step=0.5
const yScale = 4.1; //min=0.1 max=40 step=0.5
const scale = 134; //min=100 max=400 step=1
function line(x1,y1,x2,y2)
{
turtle.penup();
turtle.goto(x1,y1);
turtle.pendown();
turtle.goto(x2,y2);
}

function map(x,y)
{
// cartesian -> polar
r = Math.sqrt(x*x + y*y)
a = Math.atan2(y,x)

var u=0, v=0;
if(r != 0) {
// polar -> cartesian but with r=(1/r)
u = (1/r) * Math.cos(a)
v = (1/r) * Math.sin(a)
}

return [u, v]
}

function walk(i)
{
previous = undefined

for(var y=-100; y<100; y=y+1) {
for(var x=-100; x<100; x=x+1) {
var [u,v] = map(x,y)
u *= zoom
v *= zoom

// cartesian -> screen
i_ = -100 + (u+1)/xScale * scale
j_ = -100 + (1-v)/yScale * scale

// draw lines
if(previous != undefined) {
line(i_,j_,previous[0], previous[1])
line(j_,i_,previous[1], previous[0])
}
previous = [i_,j_]
}
}

return false;
}
```