Constrained random points on a circle: Difference between revisions

=={{header|Wren}}==

{{libheader|DOME}}

<lang ecmascript>import "graphics" for Canvas, Color

import "dome" for Window

import "random" for Random

class Game {

static init() {

Window.title = "Constrained random points on a circle"

var width = 800

var height = 800

Window.resize(width, height)

Canvas.resize(width, height)

var rand = Random.new()

var count = 0

var max = 100 // set to 1000 to produce a much more pronounced annulus

while (true) {

var x = rand.int(-15, 16)

var y = rand.int(-15, 16)

var dist = (x*x + y*y).sqrt

if (10 <= dist && dist <= 15) {

// translate coordinates to fit in the window

Canvas.circlefill((x + 16) * 25, (y + 16) * 25, 2, Color.white)

count = count + 1

if (count == max) break

}

}

}

static update() {}

static draw(alpha) {}

}</lang>