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particle.js
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"use strict";
function _classCallCheck(t, i) {
if (!(t instanceof i))
throw new TypeError("Cannot call a class as a function")
}
var _createClass = function() {
function t(t, i) {
for (var e = 0; e < i.length; e++) {
var h = i[e];
h.enumerable = h.enumerable || !1,
h.configurable = !0,
"value"in h && (h.writable = !0),
Object.defineProperty(t, h.key, h)
}
}
return function(i, e, h) {
return e && t(i.prototype, e),
h && t(i, h),
i
}
}();
!function(t) {
var i = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(t) {
setTimeout(t, 10)
}
, e = void 0
, h = void 0
, s = void 0
, a = void 0
, n = void 0
, o = void 0
, r = void 0
, d = void 0
, c = void 0
, m = void 0
, l = void 0
, g = void 0
, v = void 0
, u = void 0
, x = void 0
, f = void 0
, p = void 0
, y = void 0
, M = void 0
, w = void 0
, I = void 0
, _ = void 0
, P = void 0
, b = void 0
, E = void 0
, k = void 0
, F = void 0
, H = void 0
, A = function() {
function t(i) {
_classCallCheck(this, t);
var e = {};
i && (i.nodeName ? (e = JSON.parse(JSON.stringify(i.dataset)),
"IMG" === i.nodeName ? e.image = i : e.wrapperElement = i) : e = i),
this.state = "stopped",
this.touches = [],
this.on("imageLoaded", this._onImageLoaded),
this._initImage(e)
}
return _createClass(t, [{
key: "on",
value: function(t, i) {
this.events = this.events || {},
this.events[t] = this.events[t] || [],
this.events[t].push(i)
}
}, {
key: "emit",
value: function(t, i) {
var e = this.events[t];
if (e && e.length)
for (var h = 0; h < e.length; h++) {
var s = e[h];
s.call(this, i)
}
}
}, {
key: "start",
value: function(t) {
var i = t || {};
this.initPosition = i.initPosition || this.initPosition,
this.initDirection = i.initDirection || this.initDirection,
this.canvas && (this.canvas.width = this.width,
this.canvas.height = this.height,
this.canvas.style.display = ""),
this._initOrigins(),
this._initParticles(),
"running" !== this.state && (this.state = "running",
this.disableInteraction || ("ontouchstart"in window || window.navigator.msPointerEnabled ? (document.body.addEventListener("touchstart", this._touchHandler),
document.body.addEventListener("touchmove", this._touchHandler),
document.body.addEventListener("touchend", this._clearTouches),
document.body.addEventListener("touchcancel", this._clearTouches)) : (this.canvas.addEventListener("mousemove", this._mouseHandler),
this.canvas.addEventListener("mouseout", this._clearTouches))),
this._animate())
}
}, {
key: "stop",
value: function(t) {
var i = t || {};
this.fadePosition = i.fadePosition || this.fadePosition,
this.fadeDirection = i.fadeDirection || this.fadeDirection,
this._fade(),
document.body.removeEventListener("touchstart", this._touchHandler),
document.body.removeEventListener("touchmove", this._touchHandler),
document.body.removeEventListener("touchend", this._clearTouches),
document.body.removeEventListener("touchcancel", this._clearTouches),
this.canvas.removeEventListener("mousemove", this._mouseHandler),
this.canvas.removeEventListener("mouseout", this._clearTouches)
}
}, {
key: "_animate",
value: function() {
var t = this;
"stopped" !== this.state ? (this._calculate(),
this._draw(),
i(function() {
return t._animate()
})) : this.emit("stopped")
}
}, {
key: "_onImageLoaded",
value: function(t) {
this.imageWidth = this.image.naturalWidth || this.image.width,
this.imageHeight = this.image.naturalHeight || this.image.height,
this.imageRatio = this.imageWidth / this.imageHeight,
this.width = this.width || this.imageWidth,
this.height = this.height || this.imageHeight,
this.renderSize = (this.width + this.height) / 4,
this.srcImage && (this.srcImage.style.display = "none"),
this._initSettings(t),
this._initContext(t),
this._initResponsive(t),
this.start()
}
}, {
key: "_initImage",
value: function(t) {
var i = this;
this.srcImage = t.image,
!this.srcImage && t.imageId && (this.srcImage = document.getElementById(t.imageId)),
this.imageUrl = t.imageUrl || this.srcImage.src,
this.image = document.createElement("img"),
this.wrapperElement = t.wrapperElement || this.srcImage.parentElement,
this.image.onload = function() {
return i.emit("imageLoaded", t)
}
,
this.image.crossOrigin = "Anonymous",
t.addTimestamp && (/\?/.test(this.imageUrl) ? this.imageUrl += "&d=" + Date.now() : this.imageUrl += "?d=" + Date.now()),
this.image.src = this.imageUrl
}
}, {
key: "_initContext",
value: function(t) {
this.canvas = t.canvas,
this.canvas || this.context || !this.wrapperElement || (this.canvas = document.createElement("canvas"),
this.wrapperElement.appendChild(this.canvas)),
this.convas && (this.convas.style.display = "none"),
this.context = t.context,
this.renderer = t.renderer || "default"
}
}, {
key: "_defaultInitContext",
value: function(t) {
this.context = this.context || this.canvas.getContext("2d")
}
}, {
key: "_webglInitContext",
value: function() {
this.context = this.context || this.canvas.getContext("webgl") || this.canvas.getContext("experimental-webgl"),
this.fragmentShaderScript = "\n void main(void) {\n gl_FragColor = vec4(1, 1, 1, 0.7);\n }\n ",
this.vertexShaderScript = "\n attribute vec3 vertexPosition;\n vec3 offset = vec3(-5, 3, 100);\n vec3 mirror = vec3(0.01, -0.01, 1);\n\n uniform mat4 modelViewMatrix;\n uniform mat4 perspectiveMatrix;\n\n void main(void) {\n gl_Position = perspectiveMatrix * modelViewMatrix * vec4(mirror * vertexPosition + offset, 1.0);\n gl_PointSize = 1.0;\n }\n ",
this.context.viewport(0, 0, this.width, this.height);
var t = this.context.createShader(this.context.VERTEX_SHADER);
this.context.shaderSource(t, this.vertexShaderScript),
this.context.compileShader(t);
var i = this.context.createShader(this.context.FRAGMENT_SHADER);
this.context.shaderSource(i, this.fragmentShaderScript),
this.context.compileShader(i),
this.program = this.context.createProgram(),
this.context.attachShader(this.program, t),
this.context.attachShader(this.program, i),
this.context.linkProgram(this.program),
this.context.useProgram(this.program),
this.vertexPosition = this.context.getAttribLocation(this.program, "vertexPosition"),
this.context.enableVertexAttribArray(this.vertexPosition),
this.context.clearColor(0, 0, 0, 1),
this.context.clearDepth(1),
this.context.enable(this.context.BLEND),
this.context.disable(this.context.DEPTH_TEST),
this.context.blendFunc(this.context.SRC_ALPHA, this.context.ONE),
this.vertexBuffer = this.context.createBuffer(),
this.context.bindBuffer(this.context.ARRAY_BUFFER, this.vertexBuffer),
this.context.clear(this.context.COLOR_BUFFER_BIT | this.context.DEPTH_BUFFER_BIT);
var e = this.width / this.height
, h = 1 * Math.tan(1 * Math.PI / 360)
, s = -h
, a = h * e
, n = -a
, o = (a + n) / (a - n)
, r = (h + s) / (h - s)
, d = 2 / (a - n)
, c = 2 / (h - s)
, m = [d, 0, o, 0, 0, c, r, 0, 0, 0, 10001 / 9999, 2e4 / 9999, 0, 0, -1, 0]
, l = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
, g = this.context.getAttribLocation(this.program, "vertexPosition");
this.context.vertexAttribPointer(g, 3, this.context.FLOAT, !1, 0, 0);
var v = this.context.getUniformLocation(this.program, "modelViewMatrix")
, u = this.context.getUniformLocation(this.program, "perspectiveMatrix");
this.context.uniformMatrix4fv(v, !1, new Float32Array(m)),
this.context.uniformMatrix4fv(u, !1, new Float32Array(l))
}
}, {
key: "_initSettings",
value: function(t) {
this.width = 1 * t.width || this.width,
this.height = 1 * t.height || this.height,
this.maxWidth = t.maxWidth,
this.maxHeight = t.maxHeight,
this.minWidth = t.minWidth,
this.minHeight = t.minHeight,
this.maxWidth && (/%$/.test(this.maxWidth) ? this.maxWidth = this.width * this.maxWidth.replace("%", "") / 100 : this.maxWidth *= 1),
this.maxHeight && (/%$/.test(this.maxHeight) ? this.maxHeight = this.height * this.maxHeight.replace("%", "") / 100 : this.maxHeight *= 1),
this.minWidth && (/%$/.test(this.minWidth) ? this.minWidth = this.width * this.minWidth.replace("%", "") / 100 : this.minWidth *= 1),
this.minHeight && (/%$/.test(this.minHeight) ? this.minHeight = this.height * this.minHeight.replace("%", "") / 100 : this.minHeight *= 1),
this.alphaFade = .4,
this.gravity = 1 * t.gravity || .08,
this.particleGap = 1 * t.particleGap || 3,
this.layerCount = t.layerCount || 1,
this.layerDistance = t.layerDistance || this.particleGap,
this.initPosition = t.initPosition || "random",
this.initDirection = t.initDirection || "random",
this.fadePosition = t.fadePosition || "none",
this.fadeDirection = t.fadeDirection || "none",
this.noise = isNaN(1 * t.noise) ? 10 : 1 * t.noise,
this.disableInteraction = t.disableInteraction,
this.mouseForce = 1 * t.mouseForce || 30,
this.color = t.color,
this.colorArr = t.colorArr || this.colorArr
}
}, {
key: "_initResponsive",
value: function(t) {
var i = this;
this.responsiveWidth = this.wrapperElement && t.responsiveWidth,
this.responsiveWidth && (this.on("stopped", function() {
i.width = i.wrapperElement.clientWidth,
i.start()
}),
this.wrapperElement.addEventListener("resize", function() {
i.width !== i.wrapperElement.clientWidth && i.stop()
}),
this.width = this.wrapperElement.clientWidth)
}
}, {
key: "_calculate",
value: function() {
for (this.vertices = [],
h = 0,
s = 0; s < this.particles.length; s++) {
for (o = this.origins[s],
r = this.particles[s],
u = o.x - r.x + (Math.random() - .5) * this.noise,
x = o.y - r.y + (Math.random() - .5) * this.noise,
f = o.z - r.z + (Math.random() - .5) * this.noise / 1e3,
p = Math.sqrt(u * u + x * x + f * f),
y = .01 * p,
r.vx += y * (u / p) * this.speed,
r.vy += y * (x / p) * this.speed,
r.vz += y * (f / p) * this.speed,
c = 0; c < this.touches.length; c++)
d = this.touches[c],
u = r.x - d.x,
x = r.y - d.y,
f = r.z - d.z,
p = Math.sqrt(u * u + x * x + f * f),
y = this.mouseForce * d.force / p,
r.vx += y * (u / p) * this.speed,
r.vy += y * (x / p) * this.speed,
r.vz += y * (f / p) * this.speed;
r.vx *= this.gravityFactor,
r.vy *= this.gravityFactor,
r.vz *= this.gravityFactor,
r.x += r.vx,
r.y += r.vy,
r.z += r.vz,
0 > r.x || r.x >= this.width || 0 > r.y || r.y >= this.height ? (r.isHidden = !0,
"stopping" === this.state && (r.isDead = !0)) : ("stopping" !== this.state || r.isDead || h++,
r.isHidden = !1),
this.vertices.push(r.x, r.y, r.z)
}
"stopping" === this.state && 0 === h && (this.state = "stopped")
}
}, {
key: "_defaultRenderer",
value: function() {
for (this.depth = Math.max(this.layerDistance * this.layerCount / 2, this.mouseForce),
this.minZ = -this.depth,
this.maxZ = this.depth,
e = this.context.createImageData(this.width, this.height),
s = 0; s < this.origins.length; s++)
o = this.origins[s],
r = this.particles[s],
r.isDead || r.isHidden || (l = ~~r.x,
g = ~~r.y,
H = o.color[3],
this.alphaFade > 0 && this.layerCount > 1 && (v = Math.max(Math.min(r.z, this.maxZ), this.minZ) - this.minZ,
H = H * (1 - this.alphaFade) + H * this.alphaFade * (v / (this.maxZ - this.minZ)),
H = Math.max(Math.min(~~H, 255), 0)),
a = 4 * (l + g * this.width),
e.data[a + 0] = o.color[0],
e.data[a + 1] = o.color[1],
e.data[a + 2] = o.color[2],
e.data[a + 3] = H);
this.context.putImageData(e, 0, 0)
}
}, {
key: "_webglRenderer",
value: function() {
I = new Float32Array(this.vertices),
this.context.lineWidth(2.6),
this.context.bufferData(this.context.ARRAY_BUFFER, I, this.context.DYNAMIC_DRAW),
this.context.clear(this.context.COLOR_BUFFER_BIT | this.context.DEPTH_BUFFER_BIT),
this.context.drawArrays(this.context.POINTS, 0, this.particles.length),
this.context.flush()
}
}, {
key: "_initParticles",
value: function() {
for (this.particles = void 0,
this.particles = [],
s = 0; s < this.origins.length; s++)
o = this.origins[s],
r = {},
this._initParticlePosition(o, r),
this._initParticleDirection(r),
this.particles.push(r)
}
}, {
key: "_initParticlePosition",
value: function(t, i) {
switch (i.z = 0,
this.initPosition) {
case "random":
i.x = Math.random() * this.width,
i.y = Math.random() * this.height;
break;
case "top":
i.x = Math.random() * this.width * 3 - this.width,
i.y = -Math.random() * this.height;
break;
case "left":
i.x = -Math.random() * this.width,
i.y = Math.random() * this.height * 3 - this.height;
break;
case "bottom":
i.x = Math.random() * this.width * 3 - this.width,
i.y = this.height + Math.random() * this.height;
break;
case "right":
i.x = this.width + Math.random() * this.width,
i.y = Math.random() * this.height * 3 - this.height;
break;
case "misplaced":
i.x = t.x + Math.random() * this.width * .3 - .1 * this.width,
i.y = t.y + Math.random() * this.height * .3 - .1 * this.height;
break;
default:
i.x = t.x,
i.y = t.y
}
}
}, {
key: "_fade",
value: function() {
for ("explode" === this.fadePosition || "top" === this.fadePosition || "left" === this.fadePosition || "bottom" === this.fadePosition || "right" === this.fadePosition ? this.state = "stopping" : this.state = "stopped",
s = 0; s < this.origins.length; s++)
o = origins[s],
this._fadeOriginPosition(this.origins[s]),
this._fadeOriginDirection(this.particles[s])
}
}, {
key: "_fadeOriginPosition",
value: function(t) {
switch (this.fadePosition) {
case "random":
t.x = Math.random() * this.width * 2 - this.width,
t.y = Math.random() * this.height * 2 - this.height,
t.x > 0 && (t.x += this.width),
t.y > 0 && (t.y += this.height);
break;
case "top":
t.x = Math.random() * this.width * 3 - this.width,
t.y = -Math.random() * this.height;
break;
case "left":
t.x = -Math.random() * this.width,
t.y = Math.random() * this.height * 3 - this.height;
break;
case "bottom":
t.x = Math.random() * this.width * 3 - this.width,
t.y = this.height + Math.random() * this.height;
break;
case "right":
t.x = this.width + Math.random() * this.width,
t.y = Math.random() * this.height * 3 - this.height
}
}
}, {
key: "_initParticleDirection",
value: function(t) {
switch (t.vz = 0,
this.initDirection) {
case "random":
M = Math.random() * Math.PI * 2,
w = Math.random(),
t.vx = this.width * w * Math.sin(M) * .1,
t.vy = this.height * w * Math.cos(M) * .1;
break;
case "top":
M = Math.random() * Math.PI - Math.PI / 2,
w = Math.random(),
t.vx = this.width * w * Math.sin(M) * .1,
t.vy = this.height * w * Math.cos(M) * .1;
break;
case "left":
M = Math.random() * Math.PI + Math.PI,
w = Math.random(),
t.vx = this.width * w * Math.sin(M) * .1,
t.vy = this.height * w * Math.cos(M) * .1;
break;
case "bottom":
M = Math.random() * Math.PI + Math.PI / 2,
w = Math.random(),
t.vx = this.width * w * Math.sin(M) * .1,
t.vy = this.height * w * Math.cos(M) * .1;
break;
case "right":
M = Math.random() * Math.PI,
w = Math.random(),
t.vx = this.width * w * Math.sin(M) * .1,
t.vy = this.height * w * Math.cos(M) * .1;
break;
default:
t.vx = 0,
t.vy = 0
}
}
}, {
key: "_fadeOriginDirection",
value: function(t) {
switch (this.fadeDirection) {
case "random":
M = Math.random() * Math.PI * 2,
w = Math.random(),
t.vx += this.width * w * Math.sin(M) * .1,
t.vy += this.height * w * Math.cos(M) * .1;
break;
case "top":
M = Math.random() * Math.PI - Math.PI / 2,
w = Math.random(),
t.vx += this.width * w * Math.sin(M) * .1,
t.vy += this.height * w * Math.cos(M) * .1;
break;
case "left":
M = Math.random() * Math.PI + Math.PI,
w = Math.random(),
t.vx += this.width * w * Math.sin(M) * .1,
t.vy += this.height * w * Math.cos(M) * .1;
break;
case "bottom":
M = Math.random() * Math.PI + Math.PI / 2,
w = Math.random(),
t.vx += this.width * w * Math.sin(M) * .1,
t.vy += this.height * w * Math.cos(M) * .1;
break;
case "right":
M = Math.random() * Math.PI,
w = Math.random(),
t.vx += this.width * w * Math.sin(M) * .1,
t.vy += this.height * w * Math.cos(M) * .1;
break;
default:
t.vx = 0,
t.vy = 0
}
}
}, {
key: "_initOrigins",
value: function() {
for (_ = document.createElement("canvas"),
this.responsiveWidth && (this.width = this.wrapperElement.clientWidth),
this.ratio = Math.min(this.width, this.maxWidth || Number.POSITIVE_INFINITY) / Math.min(this.height, this.maxHeight || Number.POSITIVE_INFINITY),
this.ratio < this.imageRatio ? (this.renderWidth = ~~Math.min(this.width || Number.POSITIVE_INFINITY, this.minWidth || this.imageWidth || Number.POSITIVE_INFINITY, this.maxWidth || Number.POSITIVE_INFINITY),
this.renderHeight = ~~(this.renderWidth / this.imageRatio)) : (this.renderHeight = ~~Math.min(this.height || Number.POSITIVE_INFINITY, this.minHeight || this.imageHeight || Number.POSITIVE_INFINITY, this.maxHeight || Number.POSITIVE_INFINITY),
this.renderWidth = ~~(this.renderHeight * this.imageRatio)),
this.offsetX = ~~((this.width - this.renderWidth) / 2),
this.offsetY = ~~((this.height - this.renderHeight) / 2),
_.width = this.renderWidth,
_.height = this.renderHeight,
P = _.getContext("2d"),
P.drawImage(this.image, 0, 0, this.renderWidth, this.renderHeight),
b = P.getImageData(0, 0, this.renderWidth, this.renderHeight).data,
this.origins = void 0,
this.origins = [],
l = 0; l < this.renderWidth; l += this.particleGap)
for (g = 0; g < this.renderHeight; g += this.particleGap)
if (s = 4 * (l + g * this.renderWidth),
(H = b[s + 3]) > 0)
if (this.colorArr)
for (n = 0; n < this.layerCount; n++)
this.origins.push({
x: this.offsetX + l,
y: this.offsetY + g,
z: n * this.layerDistance - this.layerCount * this.layerDistance / 2,
color: this.colorArr
});
else
for (E = b[s],
k = b[s + 1],
F = b[s + 2],
n = 0; n < this.layerCount; n++)
this.origins.push({
x: this.offsetX + l,
y: this.offsetY + g,
z: n * this.layerDistance - this.layerCount * this.layerDistance / 2,
color: [E, k, F, H]
});
this.speed = Math.log(this.origins.length) / 10,
this.gravityFactor = 1 - this.gravity * this.speed
}
}, {
key: "_parseColor",
value: function(t) {
var i = void 0;
if ("string" == typeof t) {
var e = t.replace(" ", "");
if (i = /^#([\da-fA-F]{2})([\da-fA-F]{2})([\da-fA-F]{2})/.exec(e))
i = [parseInt(i[1], 16), parseInt(i[2], 16), parseInt(i[3], 16)];
else if (i = /^#([\da-fA-F])([\da-fA-F])([\da-fA-F])/.exec(e))
i = [17 * parseInt(i[1], 16), 17 * parseInt(i[2], 16), 17 * parseInt(i[3], 16)];
else if (i = /^rgba\(([\d]+),([\d]+),([\d]+),([\d]+|[\d]*.[\d]+)\)/.exec(e))
i = [+i[1], +i[2], +i[3], +i[4]];
else {
if (!(i = /^rgb\(([\d]+),([\d]+),([\d]+)\)/.exec(e)))
return;
i = [+i[1], +i[2], +i[3]]
}
return i
}
}
}, {
key: "renderer",
get: function() {
return this._renderer
},
set: function(t) {
this._renderer = t,
this._draw = this["_" + t + "Renderer"];
try {
this["_" + t + "InitContext"]()
} catch (i) {
console.log(i),
"default" !== t && (this.renderer = "default")
}
}
}, {
key: "color",
set: function(t) {
this.colorArr = this._parseColor(t),
this.colorArr && (isNaN(this.colorArr[3]) && (this.colorArr[3] = 255),
0 < this.colorArr[3] && this.colorArr[3] <= 1 && (this.colorArr[3] *= 255))
}
}, {
key: "_mouseHandler",
get: function() {
var t = this;
return function(i) {
t.touches = [{
x: i.offsetX,
y: i.offsetY,
z: 0,
force: 1
}]
}
}
}, {
key: "_touchHandler",
get: function() {
var t = this;
return function(i) {
for (t.touches = [],
m = t.canvas.getBoundingClientRect(),
c = 0; c < i.changedTouches.length; c++)
d = i.changedTouches[c],
d.target === t.canvas && (t.touches.push({
x: d.pageX - m.left,
y: d.pageY - m.top,
z: 0,
force: d.force || 1
}),
i.preventDefault())
}
}
}, {
key: "_clearTouches",
get: function() {
var t = this;
return function(i) {
t.touches = []
}
}
}]),
t
}();
t.NextParticle = A;
for (var D = document.getElementsByClassName("next-particle"), T = 0; T < D.length; T++) {
var W = D[T];
W.nextParticle = new A(W)
}
}(window)