Canvas Bokeh Generation

Developer
Jack Rugile
Size
2,935 Kb
Views
38,456
  1. Canvas Bokeh Generation Previews
  2. Canvas Bokeh Generation HTML Codes
  3. Canvas Bokeh Generation CSS Codes
  4. Canvas Bokeh Generation JS Codes

How do I make an canvas bokeh generation?

Pretty heavy, and not exactly true to real photography, but it's a start.. What is a canvas bokeh generation? How do you make a canvas bokeh generation? This script and codes were developed by Jack Rugile on 16 July 2022, Saturday.

Canvas Bokeh Generation Previews
IQ Test

Canvas Bokeh Generation - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Canvas Bokeh Generation</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="c1"></canvas>
<canvas id="c2"></canvas> <script src="js/index.js"></script>
</body>
</html>

Canvas Bokeh Generation - Script Codes CSS Codes

body { background: #000; overflow: hidden;
}
canvas { bottom: 0; left: 0; position: absolute; right: 0; top: 0;
}
#c1 { opacity: 0;
}
#c2 { background: #000;
}

Canvas Bokeh Generation - Script Codes JS Codes

var c1 = document.getElementById( 'c1' ),	ctx1 = c1.getContext( '2d' ),	c2 = document.getElementById( 'c2' ),	ctx2 = c2.getContext( '2d' ),	twopi = Math.PI * 2,	parts = [],	sizeBase,	cw,	opt,	hue,	count;
function rand( min, max ) {	return Math.random() * ( max - min ) + min;
}
function hsla( h, s, l, a ) {	return 'hsla(' + h + ',' + s + '%,' + l + '%,' + a + ')';
}
function create() {	sizeBase = cw + ch;	count = Math.floor( sizeBase * 0.3 ),	hue = rand( 0, 360 ),	opt = {	radiusMin: 1,	radiusMax: sizeBase * 0.04,	blurMin: 10,	blurMax: sizeBase * 0.04,	hueMin: hue,	hueMax: hue + 100,	saturationMin: 10,	saturationMax: 70,	lightnessMin: 20,	lightnessMax: 50,	alphaMin: 0.1,	alphaMax: 0.5	}	ctx1.clearRect( 0, 0, cw, ch );	ctx1.globalCompositeOperation = 'lighter';	while( count-- ) {	var radius = rand( opt.radiusMin, opt.radiusMax ),	blur = rand( opt.blurMin, opt.blurMax ),	x = rand( 0, cw ),	y = rand( 0, ch ),	hue = rand(opt.hueMin, opt.hueMax ),	saturation = rand( opt.saturationMin, opt.saturationMax ),	lightness = rand( opt.lightnessMin, opt.lightnessMax ),	alpha = rand( opt.alphaMin, opt.alphaMax );	ctx1.shadowColor = hsla( hue, saturation, lightness, alpha );	ctx1.shadowBlur = blur;	ctx1.beginPath();	ctx1.arc( x, y, radius, 0, twopi );	ctx1.closePath();	ctx1.fill();	}	parts.length = 0;	for( var i = 0; i < Math.floor( ( cw + ch ) * 0.03 ); i++ ) {	parts.push({	radius: rand( 1, sizeBase * 0.03 ),	x: rand( 0, cw ),	y: rand( 0, ch ),	angle: rand( 0, twopi ),	vel: rand( 0.1, 0.5 ),	tick: rand( 0, 10000 )	});	}
}
function init() {	resize();	create();	loop();
}
function loop() {	requestAnimationFrame( loop );	ctx2.clearRect( 0, 0, cw, ch );	ctx2.globalCompositeOperation = 'source-over';	ctx2.shadowBlur = 0;	ctx2.drawImage( c1, 0, 0 );	ctx2.globalCompositeOperation = 'lighter';	var i = parts.length;	ctx2.shadowBlur = 15;	ctx2.shadowColor = '#fff';	while( i-- ) {	var part = parts[ i ];	part.x += Math.cos( part.angle ) * part.vel;	part.y += Math.sin( part.angle ) * part.vel;	part.angle += rand( -0.05, 0.05 );	ctx2.beginPath();	ctx2.arc( part.x, part.y, part.radius, 0, twopi );	ctx2.fillStyle = hsla( 0, 0, 100, 0.075 + Math.cos( part.tick * 0.02 ) * 0.05 );	ctx2.fill();	if( part.x - part.radius > cw ) { part.x = -part.radius }	if( part.x + part.radius < 0 ) { part.x = cw + part.radius }	if( part.y - part.radius > ch ) { part.y = -part.radius }	if( part.y + part.radius < 0 ) { part.y = ch + part.radius }	part.tick++;	}
}
function resize() {	cw = c1.width = c2.width = window.innerWidth,	ch = c1.height = c2.height = window.innerHeight;	create();
}
function click() {	create()
}
window.addEventListener( 'resize', resize );
window.addEventListener( 'click', click );
init();
Canvas Bokeh Generation - Script Codes
Canvas Bokeh Generation - Script Codes
Home Page Home
Developer Jack Rugile
Username jackrugile
Uploaded July 16, 2022
Rating 4.5
Size 2,935 Kb
Views 38,456
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