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Random circles on a canvas with xor composition #7

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Random circles on a canvas with xor composition #7

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39 changes: 39 additions & 0 deletions randomCircles.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<canvas id="myCanvas" width="1000" height="1000"></canvas>

<script>

var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
context.globalCompositeOperation = 'xor'

function randomIntFromInterval(min, max) { // min and max included
return Math.floor(Math.random() * (max - min + 1) + min);
}

for(let i=0; i<randomIntFromInterval(200, 1000); i++){
var centerX = randomIntFromInterval(0, 1000);
var centerY = randomIntFromInterval(0, 1000);
var radius = randomIntFromInterval(10, 100);

context.beginPath();
context.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
context.fillStyle = '#'+(Math.random()*0xFFFFFF<<0).toString(16);
context.fill();
context.lineWidth = 5;
context.strokeStyle = '#'+(Math.random()*0xFFFFFF<<0).toString(16);
context.stroke();
}

</script>

</body>
</html>