[Quantum Continuum]: Non standard idea to draw a Circle

# Non standard idea to draw a Circle

## Algorithm formula

**Note: Clicking on image below will open a video on YouToBee.**
[](https://www.youtube.com/watch?v=cFFGDukiOkY)


**Note: Clicking on image below will open a video on YouToBee.**
[](https://www.youtube.com/watch?v=kDPch4SiYjM)

## Output result

1. [Demo - https://alpha.editor.p5js.org/full/H1ZcQ2alG](https://alpha.editor.p5js.org/full/H1ZcQ2alG)
1. [Source Code OnLine - https://alpha.editor.p5js.org/gvitalie/sketches/H1ZcQ2alG](https://alpha.editor.p5js.org/gvitalie/sketches/H1ZcQ2alG)


```javascript
// # sketch.js

function setup() {
createCanvas(windowWidth, windowHeight);
}

function draw() {
background(51);

stroke(120);
strokeWeight(3);
fill(100, 0, 0, 100);
let D = height/2;
translate(width/2 - D/2, height/2);
beginShape();
for(let i=0; i<=D; i++){
let x = i;
let y = D - x;
// point(x, -sqrt(x*y));
// point(x, sqrt(x*y));
vertex(x, -sqrt(x*y));
// vertex(x, sqrt(x*y));
}
endShape();
beginShape();
for(let i=0; i<=D; i++){
let x = i;
let y = D - x;
// point(x, -sqrt(x*y));
// point(x, sqrt(x*y));
// vertex(x, -sqrt(x*y));
vertex(x, sqrt(x*y));
}
endShape();
}

function windowResized(){
resizeCanvas(windowWidth, windowHeight);
}

function mousePressed(){
let fs = fullscreen();
fullscreen(!fs);
}
```

@shiffman :100:

The proposal is demonstrated in the linked p5.js demos and the inline sketch.js; start by reviewing those examples and the circle-drawing formula. Done would require a decided project action and a concrete scope for turning the idea into a topic or implementation, neither of which the issue currently specifies.

Scritto dal modello di indicizzazione a partire dal testo della issue.