edit
This commit is contained in:
Taric Xin
@ -2,26 +2,312 @@ export default class Particle {
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ParticleNetworkAnimation: any;
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PNA: any;
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getLimitedRandom = function (min: number, max: number, roundToInteger?: any) {
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var number = Math.random() * (max - min) + min;
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if (roundToInteger) {
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number = Math.round(number);
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}
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return number;
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};
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returnRandomArrayitem = function (array: string | any[]) {
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return array[Math.floor(Math.random() * array.length)];
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};
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constructor() {
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this.ParticleNetworkAnimation = this.PNA = function () {};
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}
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init() {
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this.PNA.prototype.init = function (element: any) {
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this.$el = document.getElementsByClassName(element);
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this.PNA = {
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init: function (element: any) {
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this.$el = document.getElementsByClassName(element);
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this.container = element;
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this.canvas = document.createElement('canvas');
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this.sizeCanvas();
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this.container.appendChild(this.canvas);
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this.ctx = this.canvas.getContext('2d');
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// this.particleNetwork = new ParticleNetwork(this);
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this.container = element;
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this.canvas = document.createElement('canvas');
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this.sizeCanvas();
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this.container.appendChild(this.canvas);
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this.ctx = this.canvas.getContext('2d');
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// this.particleNetwork = new ParticleNetwork(this);
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this.bindUiActions();
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return this;
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},
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bindUiActions: function () {
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(window as any).on('resize', () => {
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this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
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// this.sizeContainer();
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this.sizeCanvas();
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this.particleNetwork.createParticles();
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});
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},
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sizeCanvas: function () {
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this.canvas.width = this.container.offsetWidth;
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this.canvas.height = this.container.offsetHeight;
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}
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};
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var Particle = (parent: any, x: any, y: any) => {
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const network = parent;
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const canvas = parent.canvas;
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return {
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ctx: parent.ctx,
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particleColor: this.returnRandomArrayitem(network.options.particleColors),
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radius: this.getLimitedRandom(1.5, 2.5),
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opacity: 0,
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x: x || Math.random() * canvas.width,
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y: y || Math.random() * canvas.height,
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velocity: {
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x: (Math.random() - 0.5) * parent.options.velocity,
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y: (Math.random() - 0.5) * parent.options.velocity
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}
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};
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};
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Particle.prototype.update = function () {
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if (this.opacity < 1) {
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this.opacity += 0.01;
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} else {
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this.opacity = 1;
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}
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// Change dir if outside map
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if (this.x > this.canvas.width + 100 || this.x < -100) {
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this.velocity.x = -this.velocity.x;
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}
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if (this.y > this.canvas.height + 100 || this.y < -100) {
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this.velocity.y = -this.velocity.y;
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}
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// Update position
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this.x += this.velocity.x;
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this.y += this.velocity.y;
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};
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Particle.prototype.draw = function () {
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// Draw particle
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this.ctx.beginPath();
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this.ctx.fillStyle = this.particleColor;
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this.ctx.globalAlpha = this.opacity;
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this.ctx.arc(this.x, this.y, this.radius, 0, 2 * Math.PI);
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this.ctx.fill();
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};
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var ParticleNetwork = (parent: { canvas: any; ctx: any }) => {
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this.init();
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return {
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options: {
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velocity: 1, // the higher the faster
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density: 15000, // the lower the denser
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netLineDistance: 200,
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netLineColor: '#929292',
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particleColors: ['#aaa'] // ['#6D4E5C', '#aaa', '#FFC458' ]
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},
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canvas: parent.canvas,
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ctx: parent.ctx
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};
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};
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ParticleNetwork.prototype.init = function () {
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// Create particle objects
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this.createParticles(true);
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// Update canvas
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this.animationFrame = requestAnimationFrame(this.update.bind(this));
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this.bindUiActions();
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};
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return this;
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ParticleNetwork.prototype.createParticles = function (isInitial: any) {
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// Initialise / reset particles
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var me = this;
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this.particles = [];
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var quantity = (this.canvas.width * this.canvas.height) / this.options.density;
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if (isInitial) {
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var counter = 0;
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clearInterval(this.createIntervalId);
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this.createIntervalId = setInterval(() => {
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if (counter < quantity - 1) {
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// Create particle object
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this.particles.push(new Particle(me, me.canvas.width, me.canvas.height));
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} else {
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clearInterval(me.createIntervalId);
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}
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counter++;
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}, 50);
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} else {
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// Create particle objects
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for (var i = 0; i < quantity; i++) {
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this.particles.push(new Particle(this));
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}
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}
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};
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ParticleNetwork.prototype.createInteractionParticle = function () {
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// Add interaction particle
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this.interactionParticle = new Particle(this);
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this.interactionParticle.velocity = {
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x: 0,
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y: 0
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};
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this.particles.push(this.interactionParticle);
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return this.interactionParticle;
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};
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ParticleNetwork.prototype.removeInteractionParticle = function () {
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// Find it
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var index = this.particles.indexOf(this.interactionParticle);
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if (index > -1) {
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// Remove it
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this.interactionParticle = undefined;
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this.particles.splice(index, 1);
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}
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};
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ParticleNetwork.prototype.update = function () {
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if (this.canvas) {
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this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
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this.ctx.globalAlpha = 1;
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// Draw connections
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for (var i = 0; i < this.particles.length; i++) {
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for (var j = this.particles.length - 1; j > i; j--) {
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var distance,
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p1 = this.particles[i],
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p2 = this.particles[j];
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// check very simply if the two points are even a candidate for further measurements
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distance = Math.min(Math.abs(p1.x - p2.x), Math.abs(p1.y - p2.y));
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if (distance > this.options.netLineDistance) {
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continue;
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}
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// the two points seem close enough, now let's measure precisely
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distance = Math.sqrt(Math.pow(p1.x - p2.x, 2) + Math.pow(p1.y - p2.y, 2));
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if (distance > this.options.netLineDistance) {
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continue;
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}
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this.ctx.beginPath();
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this.ctx.strokeStyle = this.options.netLineColor;
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this.ctx.globalAlpha = ((this.options.netLineDistance - distance) / this.options.netLineDistance) * p1.opacity * p2.opacity;
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this.ctx.lineWidth = 0.7;
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this.ctx.moveTo(p1.x, p1.y);
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this.ctx.lineTo(p2.x, p2.y);
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this.ctx.stroke();
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}
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}
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// Draw particles
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for (var i = 0; i < this.particles.length; i++) {
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this.particles[i].update();
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this.particles[i].draw();
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}
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if (this.options.velocity !== 0) {
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this.animationFrame = requestAnimationFrame(this.update.bind(this));
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}
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} else {
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cancelAnimationFrame(this.animationFrame);
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}
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};
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ParticleNetwork.prototype.bindUiActions = function () {
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// Mouse / touch event handling
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this.spawnQuantity = 3;
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this.mouseIsDown = false;
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this.touchIsMoving = false;
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this.onMouseMove = (e: { offsetX: any; offsetY: any }) => {
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if (!this.interactionParticle) {
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this.createInteractionParticle();
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}
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this.interactionParticle.x = e.offsetX;
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this.interactionParticle.y = e.offsetY;
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};
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this.onTouchMove = (e: { preventDefault: () => void; changedTouches: { clientX: any[]; clientY: any }[] }) => {
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e.preventDefault();
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this.touchIsMoving = true;
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if (!this.interactionParticle) {
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this.createInteractionParticle();
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}
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this.interactionParticle.x = e.changedTouches[0].clientX;
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this.interactionParticle.y = e.changedTouches[0].clientY;
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};
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this.onMouseDown = () => {
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this.mouseIsDown = true;
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var counter = 0;
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var quantity = this.spawnQuantity;
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var intervalId = setInterval(
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() => {
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if (this.mouseIsDown) {
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if (counter === 1) {
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quantity = 1;
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}
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for (var i = 0; i < quantity; i++) {
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if (this.interactionParticle) {
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this.particles.push(new Particle(this, this.interactionParticle.x, this.interactionParticle.y));
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}
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}
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} else {
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clearInterval(intervalId);
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}
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counter++;
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},
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50
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);
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};
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this.onTouchStart = (e: { preventDefault: () => void; changedTouches: { clientY: any; }[]; }) => {
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e.preventDefault();
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setTimeout(
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() => {
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if (!this.touchIsMoving) {
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for (var i = 0; i < this.spawnQuantity; i++) {
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this.particles.push(new Particle(this, e.changedTouches[0].clientX, e.changedTouches[0].clientY));
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}
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}
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},
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200
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);
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};
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this.onMouseUp = () => {
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this.mouseIsDown = false;
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};
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this.onMouseOut = function () {
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this.removeInteractionParticle();
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};
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this.onTouchEnd = (e: { preventDefault: () => void; }) => {
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e.preventDefault();
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this.touchIsMoving = false;
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this.removeInteractionParticle();
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};
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// this.canvas.addEventListener('mousemove', this.onMouseMove);
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// this.canvas.addEventListener('touchmove', this.onTouchMove);
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// this.canvas.addEventListener('mousedown', this.onMouseDown);
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// this.canvas.addEventListener('touchstart', this.onTouchStart);
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// this.canvas.addEventListener('mouseup', this.onMouseUp);
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// this.canvas.addEventListener('mouseout', this.onMouseOut);
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// this.canvas.addEventListener('touchend', this.onTouchEnd);
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};
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ParticleNetwork.prototype.unbindUiActions = function () {
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if (this.canvas) {
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// this.canvas.removeEventListener('mousemove', this.onMouseMove);
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// this.canvas.removeEventListener('touchmove', this.onTouchMove);
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// this.canvas.removeEventListener('mousedown', this.onMouseDown);
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// this.canvas.removeEventListener('touchstart', this.onTouchStart);
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// this.canvas.removeEventListener('mouseup', this.onMouseUp);
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// this.canvas.removeEventListener('mouseout', this.onMouseOut);
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// this.canvas.removeEventListener('touchend', this.onTouchEnd);
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}
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};
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}
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}
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