485 lines
18 KiB
JavaScript
485 lines
18 KiB
JavaScript
// fireworks
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(function($) {
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let fwTextOverlay = {};
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fwTextOverlay.opacityIn = [0,1];
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fwTextOverlay.scaleIn = [0.2, 1];
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fwTextOverlay.scaleOut = 3;
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fwTextOverlay.durationIn = 500;
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fwTextOverlay.durationOut = 500;
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fwTextOverlay.delay = 300;
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setTimeout(function () {
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anime.timeline({loop: false})
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.add({
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targets: '.fw-text-overlay .letters-1',
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opacity: fwTextOverlay.opacityIn,
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scale: fwTextOverlay.scaleIn,
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duration: fwTextOverlay.durationIn
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}).add({
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targets: '.fw-text-overlay .letters-1',
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opacity: 0,
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scale: fwTextOverlay.scaleOut,
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duration: fwTextOverlay.durationOut,
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easing: "easeInExpo",
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delay: fwTextOverlay.delay
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}).add({
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targets: '.fw-text-overlay .letters-2',
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opacity: fwTextOverlay.opacityIn,
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scale: fwTextOverlay.scaleIn,
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duration: fwTextOverlay.durationIn
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}).add({
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targets: '.fw-text-overlay .letters-2',
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opacity: 0,
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scale: fwTextOverlay.scaleOut,
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duration: fwTextOverlay.durationOut,
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easing: "easeInExpo",
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delay: fwTextOverlay.delay
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}).add({
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targets: '.fw-text-overlay .letters-3',
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opacity: fwTextOverlay.opacityIn,
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scale: fwTextOverlay.scaleIn,
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duration: fwTextOverlay.durationIn
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}).add({
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targets: '.fw-text-overlay .letters-3',
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opacity: 0,
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scale: fwTextOverlay.scaleOut,
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duration: fwTextOverlay.durationOut,
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easing: "easeInExpo",
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delay: fwTextOverlay.delay
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}).add({
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targets: '.fw-text-overlay',
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opacity: 0,
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duration: 500,
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delay: 500
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});
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}, 300);
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}(jQuery));
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(function($) {
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let Fireworks;
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Fireworks = function () {
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let self = this;
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let rand = function (rMi, rMa) {
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return ~~((Math.random() * (rMa - rMi + 1)) + rMi);
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};
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let hitTest = function (x1, y1, w1, h1, x2, y2, w2, h2) {
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return !(x1 + w1 < x2 || x2 + w2 < x1 || y1 + h1 < y2 || y2 + h2 < y1);
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};
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window.requestAnimFrame = function () {
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return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (a) {
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window.setTimeout(a, 1E3 / 60)
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}
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}();
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self.init = function () {
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self.dt = 0;
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self.oldTime = Date.now();
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self.canvas = document.createElement('canvas');
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self.canvasContainer = $('#canvas-container');
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let canvasContainerDisabled = document.getElementById('canvas-container');
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self.canvas.onselectstart = function () {
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return false;
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};
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self.canvas.width = self.cw = 1600;
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self.canvas.height = self.ch = 900;
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self.particles = [];
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self.partCount = 500;
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self.fireworks = [];
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self.mx = self.cw / 2;
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self.my = self.ch / 2;
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self.currentHue = 67;
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self.partSpeed = 6;
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self.partSpeedVariance = 11;
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self.partWind = 20;
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self.partFriction = 10;
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self.partGravity = 3;
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self.hueMin = 67;
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self.hueMax = 83;
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self.fworkSpeed = 3;
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self.fworkAccel = 3;
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self.hueVariance = 58;
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self.flickerDensity = 33;
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self.showShockwave = true;
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self.showTarget = false;
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self.clearAlpha = 50;
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self.canvasContainer.append(self.canvas);
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self.ctx = self.canvas.getContext('2d');
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self.ctx.lineCap = 'round';
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self.ctx.lineJoin = 'round';
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self.lineWidth = 1;
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self.bindEvents();
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self.canvasLoop();
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self.canvas.onselectstart = function () {
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return false;
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};
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};
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let Particle = function (x, y, hue) {
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this.x = x;
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this.y = y;
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this.coordLast = [
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{x: x, y: y},
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{x: x, y: y},
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{x: x, y: y}
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];
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this.angle = rand(0, 360);
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this.speed = rand(((self.partSpeed - self.partSpeedVariance) <= 0) ? 1 : self.partSpeed - self.partSpeedVariance, (self.partSpeed + self.partSpeedVariance));
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this.friction = 1 - self.partFriction / 100;
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this.gravity = self.partGravity / 2;
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this.hue = rand(hue - self.hueVariance, hue + self.hueVariance);
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this.brightness = rand(50, 80);
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this.alpha = rand(40, 100) / 100;
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this.decay = rand(10, 50) / 1000;
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this.wind = (rand(0, self.partWind) - (self.partWind / 2)) / 25;
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this.lineWidth = self.lineWidth;
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};
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Particle.prototype.update = function (index) {
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let radians = this.angle * Math.PI / 180;
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let vx = Math.cos(radians) * this.speed;
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let vy = Math.sin(radians) * this.speed + this.gravity;
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this.speed *= this.friction;
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this.coordLast[2].x = this.coordLast[1].x;
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this.coordLast[2].y = this.coordLast[1].y;
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this.coordLast[1].x = this.coordLast[0].x;
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this.coordLast[1].y = this.coordLast[0].y;
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this.coordLast[0].x = this.x;
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this.coordLast[0].y = this.y;
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this.x += vx * self.dt;
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this.y += vy * self.dt;
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this.angle += this.wind;
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this.alpha -= this.decay;
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if (!hitTest(0, 0, self.cw, self.ch, this.x - this.radius, this.y - this.radius, this.radius * 2, this.radius * 2) || this.alpha < .05) {
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self.particles.splice(index, 1);
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}
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};
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Particle.prototype.draw = function () {
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let coordRand = (rand(1, 3) - 1);
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self.ctx.beginPath();
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self.ctx.moveTo(Math.round(this.coordLast[coordRand].x), Math.round(this.coordLast[coordRand].y));
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self.ctx.lineTo(Math.round(this.x), Math.round(this.y));
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self.ctx.closePath();
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self.ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + this.alpha + ')';
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self.ctx.stroke();
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if (self.flickerDensity > 0) {
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let inverseDensity = 50 - self.flickerDensity;
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if (rand(0, inverseDensity) === inverseDensity) {
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self.ctx.beginPath();
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self.ctx.arc(Math.round(this.x), Math.round(this.y), rand(this.lineWidth, this.lineWidth + 3) / 2, 0, Math.PI * 2, false)
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self.ctx.closePath();
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let randAlpha = rand(50, 100) / 100;
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self.ctx.fillStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + randAlpha + ')';
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self.ctx.fill();
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}
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}
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};
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self.createParticles = function (x, y, hue) {
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let countdown = self.partCount;
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while (countdown--) {
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self.particles.push(new Particle(x, y, hue));
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}
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};
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self.updateParticles = function () {
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let i = self.particles.length;
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while (i--) {
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let p = self.particles[i];
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p.update(i);
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}
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};
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self.drawParticles = function () {
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let i = self.particles.length;
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while (i--) {
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let p = self.particles[i];
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p.draw();
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}
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};
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let Firework = function (startX, startY, targetX, targetY) {
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this.x = startX;
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this.y = startY;
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this.startX = startX;
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this.startY = startY;
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this.hitX = false;
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this.hitY = false;
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this.coordLast = [
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{x: startX, y: startY},
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{x: startX, y: startY},
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{x: startX, y: startY}
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];
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this.targetX = targetX;
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this.targetY = targetY;
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this.speed = self.fworkSpeed;
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this.angle = Math.atan2(targetY - startY, targetX - startX);
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this.shockwaveAngle = Math.atan2(targetY - startY, targetX - startX) + (90 * (Math.PI / 180));
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this.acceleration = self.fworkAccel / 100;
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this.hue = self.currentHue;
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this.brightness = rand(50, 80);
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this.alpha = rand(50, 100) / 100;
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this.lineWidth = self.lineWidth;
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this.targetRadius = 1;
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};
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Firework.prototype.update = function (index) {
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self.ctx.lineWidth = this.lineWidth;
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let vx = Math.cos(this.angle) * this.speed;
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let vy = Math.sin(this.angle) * this.speed;
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this.speed *= 1 + this.acceleration;
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this.coordLast[2].x = this.coordLast[1].x;
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this.coordLast[2].y = this.coordLast[1].y;
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this.coordLast[1].x = this.coordLast[0].x;
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this.coordLast[1].y = this.coordLast[0].y;
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this.coordLast[0].x = this.x;
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this.coordLast[0].y = this.y;
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if (self.showTarget) {
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if (this.targetRadius < 8) {
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this.targetRadius += .25 * self.dt;
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} else {
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this.targetRadius = 1 * self.dt;
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}
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}
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if (this.startX >= this.targetX) {
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if (this.x + vx <= this.targetX) {
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this.x = this.targetX;
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this.hitX = true;
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} else {
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this.x += vx * self.dt;
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}
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} else {
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if (this.x + vx >= this.targetX) {
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this.x = this.targetX;
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this.hitX = true;
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} else {
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this.x += vx * self.dt;
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}
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}
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if (this.startY >= this.targetY) {
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if (this.y + vy <= this.targetY) {
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this.y = this.targetY;
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this.hitY = true;
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} else {
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this.y += vy * self.dt;
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}
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} else {
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if (this.y + vy >= this.targetY) {
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this.y = this.targetY;
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this.hitY = true;
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} else {
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this.y += vy * self.dt;
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}
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}
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if (this.hitX && this.hitY) {
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let randExplosion = rand(0, 9);
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self.createParticles(this.targetX, this.targetY, this.hue);
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self.fireworks.splice(index, 1);
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}
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};
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Firework.prototype.draw = function () {
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self.ctx.lineWidth = this.lineWidth;
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let coordRand = (rand(1, 3) - 1);
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self.ctx.beginPath();
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self.ctx.moveTo(Math.round(this.coordLast[coordRand].x), Math.round(this.coordLast[coordRand].y));
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self.ctx.lineTo(Math.round(this.x), Math.round(this.y));
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self.ctx.closePath();
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self.ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + this.alpha + ')';
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self.ctx.stroke();
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if (self.showTarget) {
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self.ctx.save();
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self.ctx.beginPath();
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self.ctx.arc(Math.round(this.targetX), Math.round(this.targetY), this.targetRadius, 0, Math.PI * 2, false)
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self.ctx.closePath();
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self.ctx.lineWidth = 1;
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self.ctx.stroke();
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self.ctx.restore();
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}
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if (self.showShockwave) {
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self.ctx.save();
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self.ctx.translate(Math.round(this.x), Math.round(this.y));
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self.ctx.rotate(this.shockwaveAngle);
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self.ctx.beginPath();
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self.ctx.arc(0, 0, (this.speed / 5), 0, Math.PI, true);
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self.ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + rand(25, 60) / 100 + ')';
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self.ctx.lineWidth = this.lineWidth;
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self.ctx.stroke();
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self.ctx.restore();
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}
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};
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self.createFireworks = function (startX, startY, targetX, targetY) {
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self.fireworks.push(new Firework(startX, startY, targetX, targetY));
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};
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self.updateFireworks = function () {
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let i = self.fireworks.length;
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while (i--) {
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let f = self.fireworks[i];
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f.update(i);
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}
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};
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self.drawFireworks = function () {
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let i = self.fireworks.length;
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while (i--) {
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let f = self.fireworks[i];
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f.draw();
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}
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};
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self.bindEvents = function () {
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$(window).on('resize', function () {
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clearTimeout(self.timeout);
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self.timeout = setTimeout(function () {
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self.ctx.lineCap = 'round';
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self.ctx.lineJoin = 'round';
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}, 100);
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});
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$(self.canvas).on('mousedown', function (e) {
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let randLaunch = rand(0, 5);
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self.mx = e.pageX - self.canvasContainer.offset().left;
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self.my = e.pageY - self.canvasContainer.offset().top;
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self.currentHue = rand(self.hueMin, self.hueMax);
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self.createFireworks(self.cw / 2, self.ch, self.mx, self.my);
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$(self.canvas).on('mousemove.fireworks', function (e) {
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let randLaunch = rand(0, 5);
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self.mx = e.pageX - self.canvasContainer.offset().left;
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self.my = e.pageY - self.canvasContainer.offset().top;
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self.currentHue = rand(self.hueMin, self.hueMax);
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self.createFireworks(self.cw / 2, self.ch, self.mx, self.my);
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});
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});
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$(self.canvas).on('mouseup', function (e) {
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$(self.canvas).off('mousemove.fireworks');
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});
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};
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self.clear = function () {
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self.particles = [];
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self.fireworks = [];
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self.ctx.clearRect(0, 0, self.cw, self.ch);
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};
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self.updateDelta = function () {
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let newTime = Date.now();
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self.dt = (newTime - self.oldTime) / 16;
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self.dt = (self.dt > 5) ? 5 : self.dt;
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self.oldTime = newTime;
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};
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self.canvasLoop = function () {
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requestAnimFrame(self.canvasLoop, self.canvas);
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self.updateDelta();
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self.ctx.globalCompositeOperation = 'destination-out';
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self.ctx.fillStyle = 'rgba(0,0,0,' + self.clearAlpha / 100 + ')';
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self.ctx.fillRect(0, 0, self.cw, self.ch);
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self.ctx.globalCompositeOperation = 'lighter';
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self.updateFireworks();
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self.updateParticles();
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self.drawFireworks();
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self.drawParticles();
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};
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self.init();
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let initialLaunchCount = 120;
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while (initialLaunchCount--) {
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setTimeout(function () {
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self.fireworks.push(new Firework(self.cw / 2, self.ch, rand(80, self.cw - 50), rand(50, self.ch / 2) - 50));
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}, initialLaunchCount * 200);
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}
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};
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let guiPresets = {
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"preset": "Default",
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"remembered": {
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"Default": {
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"0": {
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"fworkSpeed": 2,
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"fworkAccel": 3,
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"showShockwave": true,
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"showTarget": false,
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"partCount": 30,
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"partSpeed": 5,
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"partSpeedVariance": 10,
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"partWind": 50,
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"partFriction": 5,
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"partGravity": 1,
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"flickerDensity": 20,
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"hueMin": 150,
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"hueMax": 200,
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"hueVariance": 30,
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"lineWidth": 1,
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"clearAlpha": 25
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}
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}
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},
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"closed": true,
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"folders": {
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"Fireworks": {
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"preset": "Default",
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"closed": false,
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"folders": {}
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},
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"Particles": {
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"preset": "Default",
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"closed": true,
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"folders": {}
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},
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"Color": {
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"preset": "Default",
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"closed": true,
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"folders": {}
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},
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"Other": {
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"preset": "Default",
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"closed": true,
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"folders": {}
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}
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}
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};
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let fworks = new Fireworks();
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let gui = new dat.GUI({
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autoPlace: false,
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load: guiPresets,
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preset: 'Default'
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});
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let guiFireworks = gui.addFolder('Fireworks');
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guiFireworks.add(fworks, 'fworkSpeed').min(1).max(10).step(1);
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guiFireworks.add(fworks, 'fworkAccel').min(0).max(50).step(1);
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guiFireworks.add(fworks, 'showShockwave');
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guiFireworks.add(fworks, 'showTarget');
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let guiParticles = gui.addFolder('Particles');
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guiParticles.add(fworks, 'partCount').min(0).max(500).step(1);
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guiParticles.add(fworks, 'partSpeed').min(1).max(100).step(1);
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guiParticles.add(fworks, 'partSpeedVariance').min(0).max(50).step(1);
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guiParticles.add(fworks, 'partWind').min(0).max(100).step(1);
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guiParticles.add(fworks, 'partFriction').min(0).max(50).step(1);
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guiParticles.add(fworks, 'partGravity').min(-20).max(20).step(1);
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guiParticles.add(fworks, 'flickerDensity').min(0).max(50).step(1);
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let guiColor = gui.addFolder('Color');
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guiColor.add(fworks, 'hueMin').min(0).max(360).step(1);
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guiColor.add(fworks, 'hueMax').min(0).max(360).step(1);
|
|
guiColor.add(fworks, 'hueVariance').min(0).max(180).step(1);
|
|
|
|
let guiOther = gui.addFolder('Other');
|
|
guiOther.add(fworks, 'lineWidth').min(1).max(20).step(1);
|
|
guiOther.add(fworks, 'clearAlpha').min(0).max(100).step(1);
|
|
guiOther.add(fworks, 'clear').name('Clear');
|
|
|
|
gui.remember(fworks);
|
|
|
|
}(jQuery));
|
|
// end fireworks
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