Noise Abstraction

Developer
Akimitsu Hamamuro
Size
16,664 Kb
Views
48,552

How do I make an noise abstraction?

Http://jsdo.it/akm2/ncsw. What is a noise abstraction? How do you make a noise abstraction? This script and codes were developed by Akimitsu Hamamuro on 13 June 2022, Monday.

Noise Abstraction Previews
IQ Test

Noise Abstraction - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Noise Abstraction</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id='c'></canvas> <script src='https://rawgit.com/akm2/simplex-noise.js/master/simplex-noise.js'></script>
<script src='js/kzymdn.js'></script> <script src="js/index.js"></script>
</body>
</html>

Noise Abstraction - Script Codes CSS Codes

body { font-family: sans-serif; padding: 0; margin: 0; background-color: #eee9e9; overflow: hidden; -webkit-user-select: none; -moz-user-select: none; -o-user-select: none; -ms-user-select: none; user-select: none;
}
canvas { position: absolute; top: 0; left: 0;
}

Noise Abstraction - Script Codes JS Codes

/** * requestAnimationFrame */
window.requestAnimationFrame = (function(){ return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) { window.setTimeout(callback, 1000 / 60); };
})();
// Configs
var Configs = { backgroundColor: '#eee9e9', particleNum: 1000, step: 5, base: 1000, zInc: 0.001
};
// Vars
var canvas, context, screenWidth, screenHeight, centerX, centerY, particles = [], hueBase = 0, simplexNoise, zoff = 0, gui;
// Initialize
function init() { canvas = document.getElementById('c'); window.addEventListener('resize', onWindowResize, false); onWindowResize(null); for (var i = 0, len = Configs.particleNum; i < len; i++) { initParticle((particles[i] = new Particle())); } simplexNoise = new SimplexNoise(); canvas.addEventListener('click', onCanvasClick, false); gui = new dat.GUI(); gui.add(Configs, 'step', 1, 10); gui.add(Configs, 'base', 500, 3000); gui.add(Configs, 'zInc', 0.0001, 0.01); gui.close(); update();
}
// Event listeners
function onWindowResize(e) { screenWidth = canvas.width = window.innerWidth; screenHeight = canvas.height = window.innerHeight; centerX = screenWidth / 2; centerY = screenHeight / 2; context = canvas.getContext('2d'); context.lineWidth = 0.3; context.lineCap = context.lineJoin = 'round';
}
function onCanvasClick(e) { context.save(); context.globalAlpha = 0.8; context.fillStyle = Configs.backgroundColor; context.fillRect(0, 0, screenWidth, screenHeight); context.restore(); simplexNoise = new SimplexNoise();
}
// Functions
function getNoise(x, y, z) { var octaves = 4, fallout = 0.5, amp = 1, f = 1, sum = 0, i; for (i = 0; i < octaves; ++i) { amp *= fallout; sum += amp * (simplexNoise.noise3D(x * f, y * f, z * f) + 1) * 0.5; f *= 2; } return sum;
}
function initParticle(p) { p.x = p.pastX = screenWidth * Math.random(); p.y = p.pastY = screenHeight * Math.random(); p.color.h = hueBase + Math.atan2(centerY - p.y, centerX - p.x) * 180 / Math.PI; p.color.s = 1; p.color.l = 0.5; p.color.a = 0;
}
// Update
function update() { var step = Configs.step, base = Configs.base, i, p, angle; for (i = 0, len = particles.length; i < len; i++) { p = particles[i]; p.pastX = p.x; p.pastY = p.y; angle = Math.PI * 6 * getNoise(p.x / base * 1.75, p.y / base * 1.75, zoff); p.x += Math.cos(angle) * step; p.y += Math.sin(angle) * step; if (p.color.a < 1) p.color.a += 0.003; context.beginPath(); context.strokeStyle = p.color.toString(); context.moveTo(p.pastX, p.pastY); context.lineTo(p.x, p.y); context.stroke(); if (p.x < 0 || p.x > screenWidth || p.y < 0 || p.y > screenHeight) { initParticle(p); } } hueBase += 0.1; zoff += Configs.zInc; requestAnimationFrame(update);
}
/** * HSLA */
function HSLA(h, s, l, a) { this.h = h || 0; this.s = s || 0; this.l = l || 0; this.a = a || 0;
}
HSLA.prototype.toString = function() { return 'hsla(' + this.h + ',' + (this.s * 100) + '%,' + (this.l * 100) + '%,' + this.a + ')';
}
/** * Particle */
function Particle(x, y, color) { this.x = x || 0; this.y = y || 0; this.color = color || new HSLA(); this.pastX = this.x; this.pastY = this.y;
}
// Run
init();
Noise Abstraction - Script Codes
Noise Abstraction - Script Codes
Home Page Home
Developer Akimitsu Hamamuro
Username akm2
Uploaded June 13, 2022
Rating 4.5
Size 16,664 Kb
Views 48,552
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