Kira Kira Particle Effects

Developer
Akimitsu Hamamuro
Size
4,616 Kb
Views
56,644
  1. Kira Kira Particle Effects Previews
  2. Kira Kira Particle Effects HTML Codes
  3. Kira Kira Particle Effects CSS Codes
  4. Kira Kira Particle Effects JS Codes

How do I make an kira kira particle effects?

What is a kira kira particle effects? How do you make a kira kira particle effects? This script and codes were developed by Akimitsu Hamamuro on 13 June 2022, Monday.

Kira Kira Particle Effects Previews
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Kira Kira Particle Effects - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Kira Kira Particle Effects</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id='c'></canvas> <script src='js/kzymdn.js'></script> <script src="js/index.js"></script>
</body>
</html>

Kira Kira Particle Effects - Script Codes CSS Codes

body {	padding: 0;	margin: 0;	font: 12px sans-serif;	background-color: #000;	overflow: hidden;
}
canvas { position: absolute; top: 0; left: 0;
}

Kira Kira Particle Effects - 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); };
})();
/** * Twinkle */
var Twinkle = (function() { // Config var STAR_VERTEX_NUMS = [4, 6, 8, 10, 12], MAX_STAR_NUM = 2500; /** * @constructor */ function Twinkle(starColor, starRadius, starBlur) { this.initSymbols(starColor, starRadius, starBlur); this.particles = []; this._pool = []; this.mouse = new Mouse(); } Twinkle.prototype = { mouse: null, gravity: 0.035, initSymbols: function(color, radius, blur) { this._symbols = new Symbols(color, radius, blur); }, render: function(ctx) { var particles = this.particles, mouse = this.mouse, gravity = this.gravity, speedRatio, magMax, magMin, scaleMax, symbols = this._symbols, symbolNum = this._symbols.length, symbol, size = this._symbols.size, radius = this._symbols.size * 0.5, drawSize, drawSizeHalf, drawScale, canvasWidth = ctx.canvas.width, canvasHeight = ctx.canvas.height, fieldLeft, fieldRight, fieldTop, fieldBottom, i, len, p; speedRatio = Math.min((mouse.speedX * mouse.speedX + mouse.speedY * mouse.speedY) * 0.005, 1); if (particles.length < MAX_STAR_NUM) { magMax = 0.5 + 4.5 * speedRatio; magMin = 0.1 + 0.5 * speedRatio; scaleMax = 0.5 + 0.5 * speedRatio; len = (3 * Math.random() | 0) + (20 * speedRatio | 0); for (i = 0; i < len; i++) this._createParticle(magMin, magMax, scaleMax); } fieldLeft = -canvasWidth * 0.5; fieldRight = canvasWidth * 1.5; fieldTop = -canvasHeight * 0.5; fieldBottom = canvasHeight * 1.5; for (i = 0, len = particles.length; i < len; i++) { p = particles[i]; p.vx += mouse.speedX * 0.03 * speedRatio; p.vy += mouse.speedY * 0.03 * speedRatio + gravity; p.x += p.vx + mouse.speedX; p.y += p.vy + mouse.speedY; p.scale -= 0.005; p.angle += Math.random(); if ( p.x + radius < fieldLeft || p.x - radius > fieldRight || p.y + radius < fieldTop || p.y - radius > fieldBottom || p.scale <= 0 ) { this._pool.push(p); particles.splice(i, 1); len--; i--; continue; } drawScale = p.scale; symbol = symbols[symbolNum * Math.random() | 0]; if (Math.random() < 0.7) drawScale *= 0.2; drawSize = size * drawScale; drawSizeHalf = drawSize * 0.5; ctx.save(); ctx.globalCompositeOperation = 'lighter'; ctx.translate(p.x, p.y); ctx.rotate(p.angle); ctx.drawImage(symbol, 0, 0, size, size, -drawSizeHalf, -drawSizeHalf, drawSize, drawSize); ctx.restore(); } ctx.fill(); mouse.speedX = mouse.speedY = 0; }, _createParticle: function(magMin, magMax, scaleMax) { var mag = magMin + (magMax - magMin) * Math.random(), angle = Math.PI * 2 * Math.random(), p = this._pool.length ? this._pool.shift() : new Particle(); p.init( this.mouse.x, this.mouse.y, mag * Math.cos(angle), mag * Math.sin(angle), scaleMax * Math.random(), Math.PI * 2 * Math.random() ); this.particles.push(p); } }; /** * Mouse * @private */ function Mouse(x, y) { this.x = x || 0; this.y = y || 0; } Mouse.prototype = { x: 0, y: 0, speedX: 0, speedY: 0, update: function(x, y) { this.speedX = (this.x - x) * 0.7; this.speedY = (this.y - y) * 0.7; this.x = x; this.y = y; } }; /** * Symbols * @see STAR_VERTEX_NUMS * @private */ function Symbols(color, radius, blur) { this.color = parseColor(color); this.size = (radius + blur) * 2; for (var i = 0, len = STAR_VERTEX_NUMS.length; i < len; i++) { this.push(this._createSymbol(STAR_VERTEX_NUMS[i], radius, blur)); } } Symbols.prototype = []; Symbols.prototype._createSymbol = function(vertexNum, radius, blur) { var canvas, context, size = this.size, center = this.size / 2, color = this.color; canvas = document.createElement('canvas'); canvas.width = canvas.height = size; context = canvas.getContext('2d'); context.fillStyle = colorToString(color[0], color[1], color[2], color[3], color[4]); context.shadowBlur = blur; context.shadowColor = colorToString(color[0], color[1], color[2], color[3], color[4] * 0.75); var i, len, r, a; context.beginPath(); for (i = 1, len = vertexNum * 2; i <= len; i++) { r = i % 2 ? radius * 0.1 : radius; a = Math.PI * 2 * i / len; context[i === 1 ? 'moveTo' : 'lineTo'](center + r * Math.cos(a), center + r * Math.sin(a)); } context.fill(); return canvas; }; /** * Particle * @private */ function Particle(x, y, vx, vy, scale, angle) { this.init(x, y, vx, vy, scale, angle); } Particle.prototype.init = function(x, y, vx, vy, scale, angle) { this.x = x || 0; this.y = y || 0; this.vx = vx || 0; this.vy = vy || 0; this.scale = scale || 0; this.angle = angle || 0; }; // Helpers var parseColor = (function() { var RE_RGB = /^rgb\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/, RE_RGBA = /^rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*([\d\.]+)\s*\)$/, RE_HSL = /^hsl\(\s*([\d\.]+)\s*,\s*([\d\.]+)%\s*,\s*([\d\.]+)%\s*\)$/, RE_HSLA = /^hsla\(\s*([\d\.]+)\s*,\s*([\d\.]+)%\s*,\s*([\d\.]+)%\s*,\s*([\d\.]+)\s*\)$/, RE_HEX = /^([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/; // 6 digit return function(str) { str = str.replace(/^\s*#|\s*$/g, ''); str = str.toLowerCase(); var match; // RGB(A) if ((match = str.match(RE_RGB) || str.match(RE_RGBA))) { return [ 'rgba', parseInt(match[1], 10), parseInt(match[2], 10), parseInt(match[3], 10), parseFloat(match.length === 4 ? 1 : match[4]) ]; } // HSL(A) if ((match = str.match(RE_HSL) || str.match(RE_HSLA))) { return [ 'hsla', parseFloat(match[1]), parseFloat(match[2]), parseFloat(match[3]), parseFloat(match.length === 4 ? 1 : match[4]) ]; } // Hex if (str.length === 3) { // Hex 3 digit -> 6 digit str = str.replace(/(.)/g, '$1$1'); } if ((match = str.match(RE_HEX))) { return [ 'rgba', parseInt(match[1], 16), parseInt(match[2], 16), parseInt(match[3], 16), 1 ]; } return null; }; })(); function colorToString(type, v0, v1, v2, a) { if (type === 'rgba') return 'rgba(' + v0 + ',' + v1 + ',' + v2 + ',' + a + ')'; if (type === 'hsla') return 'hsla(' + v0 + ',' + v1 + '%,' + v2 + '%,' + a + ')'; else return ''; } return Twinkle;
})();
// Initialize
(function() { // Configs var Configs = { backgroundColor: '#0d2234', starColor: '#FFFFFF', starRadius: 12, starBlur: 4 }; // Vars var canvas, context, canvasBound, grad, twinkle, gui, timeoutId; // Initialize function init() { canvas = document.getElementById('c'); context = canvas.getContext('2d'); onWindowResize(null); twinkle = new Twinkle(Configs.starColor, Configs.starRadius, Configs.starBlur); twinkle.mouse.x = canvas.width / 2; twinkle.mouse.y = canvas.height / 2; window.addEventListener('resize', onWindowResize, false); canvas.addEventListener('mousemove', onCanvasMouseMove, false); canvas.addEventListener('mouseout', onCanvasMouseOut, false); gui = new dat.GUI(); gui.addColor(Configs, 'backgroundColor').name('Background'); gui.addColor(Configs, 'starColor').name('Star Color').onChange(onGUISymbolSettingChange); gui.add(Configs, 'starRadius', 1, 30).name('Star Radius').step(1).onChange(onGUISymbolSettingChange); gui.add(Configs, 'starBlur', 0, 16).name('Star Blur').step(1).onChange(onGUISymbolSettingChange); gui.close(); update(); } // Event listeners function onWindowResize(e) { canvas.width = window.innerWidth; canvas.height = window.innerHeight; canvasBound = canvas.getBoundingClientRect(); var cx = canvas.width * 0.5, cy = canvas.height * 0.5; grad = context.createRadialGradient(cx, cy, 0, cx, cy, Math.sqrt(cx * cx + cy * cy)); grad.addColorStop(0, 'rgba(0, 0, 0, 0)'); grad.addColorStop(1, 'rgba(0, 0, 0, 0.35)'); } function onCanvasMouseMove(e) { twinkle.mouse.update(e.clientX - canvasBound.left, e.clientY - canvasBound.top); autoPos.enable = false; } function onCanvasMouseOut(e) { } function onGUISymbolSettingChange() { if (timeoutId) clearTimeout(timeoutId); timeoutId = setTimeout(function() { twinkle.initSymbols(Configs.starColor, Configs.starRadius, Configs.starBlur); }, 300); } // Update function update() { context.fillStyle = Configs.backgroundColor; context.fillRect(0, 0, canvas.width, canvas.height); context.fillStyle = grad; context.fillRect(0, 0, canvas.width, canvas.height); twinkle.render(context); requestAnimationFrame(update); } // Run init();
})();
Kira Kira Particle Effects - Script Codes
Kira Kira Particle Effects - Script Codes
Home Page Home
Developer Akimitsu Hamamuro
Username akm2
Uploaded June 13, 2022
Rating 4.5
Size 4,616 Kb
Views 56,644
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