Kira Kira Particle Effects

Size
4,616 Kb
Views
56,672

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

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 56,672
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