#codevember 5 - Particle System

Developer
Pedro Cacique
Size
3,673 Kb
Views
12,144
  1. #codevember 5 - Particle System Previews
  2. #codevember 5 - Particle System HTML Codes
  3. #codevember 5 - Particle System CSS Codes
  4. #codevember 5 - Particle System JS Codes

How do I make an #codevember 5 - particle system?

Particle System . What is a #codevember 5 - particle system? How do you make a #codevember 5 - particle system? This script and codes were developed by Pedro Cacique on 20 November 2022, Sunday.

#codevember 5 - Particle System Previews
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#codevember 5 - Particle System - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>#codevember 5 - Particle System</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="canvas"></canvas>
<footer> <div>Made by <a href="http://www.pedrocacique.com">Cacique</a></div><div> <a href="http://codevember.xyz/about">#codevember</a> <a href="http://codevember.xyz/day/5">#day5</a> </div> </footer> <script src="js/index.js"></script>
</body>
</html>

#codevember 5 - Particle System - Script Codes CSS Codes

body{ margin:0; font-family: Helvetica, Arial; font-weight: 100;
}
canvas { background-color: #101010;
}
footer{ position: fixed; bottom:0; height: 20px; width: 100%; display: flex; justify-content: space-around; align-items: center; background-color: #202020; color: #fff; font-size: 0.7em;
}
footer a{ color: #f0f0f0;
}

#codevember 5 - Particle System - Script Codes JS Codes

var canvas, ctx, cw, ch;
var particles = [];
const MIN_VEL = -1, MAX_VEL = 1, NUM_PARTICLES = 100, RADIUS = 1, MIN_PARTICLE_DISTANCE = 0.1, ISGRAYSCALE = false, LINEWIDTH = 0.2, FPS = 1000 / 60;
var requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) { return setTimeout(callback, FPS); };
window.onload = function () { canvas = document.getElementById("canvas"); initCanvas(); window.onresize=function(){initCanvas()}; init();
}
function initCanvas(){ ctx = canvas.getContext("2d"); cw = window.innerWidth; ch = window.innerHeight; canvas.width = cw; canvas.height = ch;
}
function init() { for (var i = 0; i < NUM_PARTICLES; i++) { var r = getRandomInt(0, 255); var g = r; var b = r; if(!ISGRAYSCALE) { g = getRandomInt(0, 255); b = getRandomInt(0, 255); } particles.push(new Particle(rgbToHex(r, g, b), RADIUS, new Point(getRandomInt(1, cw - 1), getRandomInt(1, ch - 1)), new Vector(new Point(), new Point(getRandomNumber(MIN_VEL, MAX_VEL), getRandomNumber(MIN_VEL, MAX_VEL))))); } animate();
}
function animate() { ctx.clearRect(0, 0, cw, ch); for (var i = 0; i < particles.length; i++) { if (particles[i].position.x >= cw || particles[i].position.x <= 0) invertMovement(i, "x"); if (particles[i].position.y >= ch || particles[i].position.y <= 0) invertMovement(i, "y"); particles[i].position = particles[i].distance(particles[i].time); drawParticle(particles[i]); particles[i].time++; for (var j = 0; j < NUM_PARTICLES; j++) { if (i != j) { if (particles[i].position.distance(particles[j].position) < cw * MIN_PARTICLE_DISTANCE) lineParticles(particles[i], particles[j]); } } } requestAnimationFrame(animate);
}
function invertMovement(index, axis) { particles[index].vel = particles[index].vel.inverse(axis); particles[index].initPos = particles[index].position.clone(); particles[index].time = 1;
}
function lineParticles(p1, p2) { ctx.beginPath(); var gradient = ctx.createLinearGradient(p1.position.x, p1.position.y, p2.position.x, p2.position.y); gradient.addColorStop("0", p1.color); gradient.addColorStop("1.0", p2.color); ctx.strokeStyle = gradient; ctx.lineWidth=LINEWIDTH; ctx.moveTo(p1.position.x, p1.position.y); ctx.lineTo(p2.position.x, p2.position.y); ctx.stroke();
}
function drawParticle(p) { ctx.beginPath(); ctx.fillStyle = p.color; ctx.arc(p.position.x, p.position.y, p.radius, 0, Math.PI * 2); ctx.fill();
}
function getRandomInt(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min;
}
function getRandomNumber(min, max) { return Math.random() * (max - min + 1) + min;
}
function componentToHex(c) { var hex = c.toString(16); return hex.length == 1 ? "0" + hex : hex;
}
function rgbToHex(r, g, b) { return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
//-------- PROTOTYPES --------
//POINT
function Point(x, y, z) { this.x = (x == null) ? 0 : x; this.y = (y == null) ? 0 : y; this.z = (z == null) ? 0 : z;
}
Point.prototype.distance = function (p2) { //Euclidean Disctance return Math.sqrt(Math.pow(this.x - p2.x, 2) + Math.pow(this.y - p2.y, 2) + Math.pow(this.z - p2.z, 2));
}
Point.prototype.manhatan = function (p2) { return (p2.x - p1.x) + (p2.y - p1.y) + (p2.z - p1.z);
}
Point.prototype.clone = function () { return new Point(this.x, this.y, this.z);
}
//VECTOR
function Vector(p1, p2, color) { this.p1 = (p1 == null) ? (new Point()) : p1; this.p2 = (p2 == null) ? (new Point()) : p2; this.color = (color == null) ? "#000" : color; this.origin = new Point();
}
Vector.prototype.norm = function () { return this.p1.distance(this.p2);
}
Vector.prototype.component = function (axis) { switch (axis.toUpperCase()) { case "X": return this.p2.x - this.p1.x; break; case "Y": return this.p2.y - this.p1.y; break; case "Z": return this.p2.z - this.p1.z; break; }
}
Vector.prototype.toPoint = function (p) { if (p == null) p = new Point(); var d0x = this.p1.x - p.x; var d0y = this.p1.y - p.y; var d0z = this.p1.z - p.z; var p1n = new Point(this.p1.x - d0x, this.p1.y - d0y, this.p1.z - d0z); var p2n = new Point(this.p2.x - d0x, this.p2.y - d0y, this.p2.z - d0z); return new Vector(p1n, p2n);
}
Vector.prototype.toOrigin = function () { return this.toPoint(this.origin);
}
Vector.prototype.inverse = function (axis) { if (axis == null) return new Vector(this.p2, this.p1); else { var v1c = this.toOrigin(); var v = new Vector(); switch (axis.toUpperCase()) { case "X": v = new Vector(new Point(), new Point(-v1c.p2.x, v1c.p2.y, v1c.p2.z)); break; case "Y": v = new Vector(new Point(), new Point(v1c.p2.x, -v1c.p2.y, v1c.p2.z)); break; case "Z": v = new Vector(new Point(), new Point(v1c.p2.x, v1c.p2.y, -v1c.p2.z)); break; } return v.toPoint(this.p1); }
}
//PARTICLE
function Particle(color, radius, position, velocity, acceleration) { this.position = (position == null) ? (new Point()) : position; this.initPos = (position == null) ? (new Point()) : position; this.vel = (velocity == null) ? (new Vector()) : velocity; this.acceleration = (acceleration == null) ? (new Vector()) : acceleration; this.color = (color == null) ? "#000" : color; this.radius = (radius == null) ? 2 : radius; this.time = 0;
}
Particle.prototype.distance = function (t) { //s = s0 + v0t + at2/2 var sx = this.initPos.x + this.vel.component("x") * t + (this.acceleration.component("x") * Math.pow(t, 2)) / 2; var sy = this.initPos.y + this.vel.component("y") * t + (this.acceleration.component("y") * Math.pow(t, 2)) / 2; var sz = this.initPos.z + this.vel.component("z") * t + (this.acceleration.component("z") * Math.pow(t, 2)) / 2; return new Point(sx, sy, sz);
}
Particle.prototype.velocity = function (t) { //v = v0 + at var vx = this.vel.component("x") + this.acceleration.component("x") * t; var vy = this.vel.component("y") + this.acceleration.component("y") * t; var vz = this.vel.component("z") + this.acceleration.component("z") * t; return new Vector(new Point(), new Point(vx, vy, vz));
}
#codevember 5 - Particle System - Script Codes
#codevember 5 - Particle System - Script Codes
Home Page Home
Developer Pedro Cacique
Username phcacique
Uploaded November 20, 2022
Rating 3
Size 3,673 Kb
Views 12,144
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