;(function(window) {
'use strict';
/**
* StackFx: The parent class.
*/
function StackFx(el) {
this.DOM = {};
this.DOM.el = el;
this.DOM.stack = this.DOM.el.querySelector('.stack');
this.DOM.stackItems = [].slice.call(this.DOM.stack.children);
this.totalItems = this.DOM.stackItems.length;
this.DOM.img = this.DOM.stack.querySelector('.stack__figure > .stack__img');
this.DOM.caption = this.DOM.el.querySelector('.grid__item-caption');
this.DOM.title = this.DOM.caption.querySelector('.grid__item-title');
this.DOM.columns = {left: this.DOM.caption.querySelector('.column--left'), right: this.DOM.caption.querySelector('.column--right')};
}
StackFx.prototype._removeAnimeTargets = function() {
anime.remove(this.DOM.stackItems);
anime.remove(this.DOM.img);
anime.remove(this.DOM.title);
anime.remove(this.DOM.columns.left);
anime.remove(this.DOM.columns.right);
};
/************************************************************************
* AltairFx.
************************************************************************/
function AltairFx(el) {
StackFx.call(this, el);
this._initEvents();
}
AltairFx.prototype = Object.create(StackFx.prototype);
AltairFx.prototype.constructor = AltairFx;
AltairFx.prototype._initEvents = function() {
var self = this;
this._mouseenterFn = function() {
self._removeAnimeTargets();
self._in();
};
this._mouseleaveFn = function() {
self._removeAnimeTargets();
self._out();
};
this.DOM.stack.addEventListener('mouseenter', this._mouseenterFn);
this.DOM.stack.addEventListener('mouseleave', this._mouseleaveFn);
};
AltairFx.prototype._in = function() {
var self = this;
this.DOM.stackItems.map(function(e, i) {
e.style.opacity = i !== self.totalItems - 1 ? 0.2*i+0.2 : 1
});
anime({
targets: this.DOM.stackItems,
duration: 1000,
easing: 'easeOutElastic',
translateZ: function(target, index, cnt) {
return index*3;
},
rotateX: function(target, index, cnt) {
return -1*index*4;
},
delay: function(target, index, cnt) {
return (cnt-index-1)*30
}
});
anime({
targets: this.DOM.img,
duration: 500,
easing: 'easeOutExpo',
scale: 0.7
});
anime({
targets: this.DOM.title,
duration: 1000,
easing: 'easeOutElastic',
translateY: 20
});
anime({
targets: [this.DOM.columns.left, this.DOM.columns.right],
duration: 1000,
easing: 'easeOutElastic',
translateY: function(target, index) {
return index === 0 ? 30 : 20;
}
});
};
AltairFx.prototype._out = function() {
var self = this;
anime({
targets: this.DOM.stackItems,
duration: 500,
easing: 'easeOutExpo',
opacity: function(target, index, cnt) {
return index !== cnt - 1 ? 0 : 1
},
translateZ: 0,
rotateX: 0
});
anime({
targets: this.DOM.img,
duration: 500,
easing: 'easeOutExpo',
scale: 1
});
anime({
targets: [this.DOM.columns.left, this.DOM.columns.right, this.DOM.title],
duration: 500,
easing: 'easeOutExpo',
translateY: 0
});
};
window.AltairFx = AltairFx;
[].slice.call(document.querySelectorAll('.grid--effect-altair > .grid__item')).forEach(function(stackEl) {
new AltairFx(stackEl);
});
})(window);
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