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var VanillaTilt = (function () {
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'use strict';
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/**
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* Created by Sergiu Șandor (micku7zu) on 1/27/2017.
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* Original idea: https://github.com/gijsroge/tilt.js
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* MIT License.
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* Version 1.7.2
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*/
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class VanillaTilt {
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constructor(element, settings = {}) {
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if (!(element instanceof Node)) {
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throw "Can't initialize VanillaTilt because " + element + ' is not a Node.';
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}
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this.width = null;
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this.height = null;
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this.clientWidth = null;
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this.clientHeight = null;
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this.left = null;
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this.top = null;
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// for Gyroscope sampling
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this.gammazero = null;
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this.betazero = null;
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this.lastgammazero = null;
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this.lastbetazero = null;
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this.transitionTimeout = null;
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this.updateCall = null;
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this.event = null;
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this.updateBind = this.update.bind(this);
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this.resetBind = this.reset.bind(this);
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this.element = element;
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this.settings = this.extendSettings(settings);
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this.reverse = this.settings.reverse ? -1 : 1;
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this.glare = VanillaTilt.isSettingTrue(this.settings.glare);
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this.glarePrerender = VanillaTilt.isSettingTrue(this.settings['glare-prerender']);
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this.fullPageListening = VanillaTilt.isSettingTrue(this.settings['full-page-listening']);
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this.gyroscope = VanillaTilt.isSettingTrue(this.settings.gyroscope);
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this.gyroscopeSamples = this.settings.gyroscopeSamples;
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this.elementListener = this.getElementListener();
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if (this.glare) {
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this.prepareGlare();
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}
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if (this.fullPageListening) {
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this.updateClientSize();
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}
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this.addEventListeners();
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this.reset();
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this.updateInitialPosition();
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}
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static isSettingTrue(setting) {
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return setting === '' || setting === true || setting === 1;
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}
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/**
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* Method returns element what will be listen mouse events
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* @return {Node}
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*/
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getElementListener() {
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if (this.fullPageListening) {
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return window.document;
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}
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if (typeof this.settings['mouse-event-element'] === 'string') {
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const mouseEventElement = document.querySelector(this.settings['mouse-event-element']);
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if (mouseEventElement) {
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return mouseEventElement;
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}
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}
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if (this.settings['mouse-event-element'] instanceof Node) {
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return this.settings['mouse-event-element'];
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}
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return this.element;
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}
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/**
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* Method set listen methods for this.elementListener
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* @return {Node}
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*/
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addEventListeners() {
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this.onMouseEnterBind = this.onMouseEnter.bind(this);
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this.onMouseMoveBind = this.onMouseMove.bind(this);
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this.onMouseLeaveBind = this.onMouseLeave.bind(this);
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this.onWindowResizeBind = this.onWindowResize.bind(this);
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this.onDeviceOrientationBind = this.onDeviceOrientation.bind(this);
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this.elementListener.addEventListener('mouseenter', this.onMouseEnterBind);
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this.elementListener.addEventListener('mouseleave', this.onMouseLeaveBind);
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this.elementListener.addEventListener('mousemove', this.onMouseMoveBind);
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if (this.glare || this.fullPageListening) {
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window.addEventListener('resize', this.onWindowResizeBind);
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}
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if (this.gyroscope) {
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window.addEventListener('deviceorientation', this.onDeviceOrientationBind);
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}
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}
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/**
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* Method remove event listeners from current this.elementListener
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*/
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removeEventListeners() {
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this.elementListener.removeEventListener('mouseenter', this.onMouseEnterBind);
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this.elementListener.removeEventListener('mouseleave', this.onMouseLeaveBind);
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this.elementListener.removeEventListener('mousemove', this.onMouseMoveBind);
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if (this.gyroscope) {
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window.removeEventListener('deviceorientation', this.onDeviceOrientationBind);
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}
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if (this.glare || this.fullPageListening) {
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window.removeEventListener('resize', this.onWindowResizeBind);
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}
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}
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destroy() {
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clearTimeout(this.transitionTimeout);
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if (this.updateCall !== null) {
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cancelAnimationFrame(this.updateCall);
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}
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this.reset();
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this.removeEventListeners();
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this.element.vanillaTilt = null;
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delete this.element.vanillaTilt;
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this.element = null;
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}
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onDeviceOrientation(event) {
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if (event.gamma === null || event.beta === null) {
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return;
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}
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this.updateElementPosition();
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if (this.gyroscopeSamples > 0) {
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this.lastgammazero = this.gammazero;
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this.lastbetazero = this.betazero;
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if (this.gammazero === null) {
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this.gammazero = event.gamma;
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this.betazero = event.beta;
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} else {
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this.gammazero = (event.gamma + this.lastgammazero) / 2;
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this.betazero = (event.beta + this.lastbetazero) / 2;
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}
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this.gyroscopeSamples -= 1;
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}
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const totalAngleX = this.settings.gyroscopeMaxAngleX - this.settings.gyroscopeMinAngleX;
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const totalAngleY = this.settings.gyroscopeMaxAngleY - this.settings.gyroscopeMinAngleY;
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const degreesPerPixelX = totalAngleX / this.width;
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const degreesPerPixelY = totalAngleY / this.height;
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const angleX = event.gamma - (this.settings.gyroscopeMinAngleX + this.gammazero);
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const angleY = event.beta - (this.settings.gyroscopeMinAngleY + this.betazero);
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const posX = angleX / degreesPerPixelX;
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const posY = angleY / degreesPerPixelY;
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if (this.updateCall !== null) {
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cancelAnimationFrame(this.updateCall);
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}
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this.event = {
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clientX: posX + this.left,
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clientY: posY + this.top
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};
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this.updateCall = requestAnimationFrame(this.updateBind);
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}
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onMouseEnter() {
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this.updateElementPosition();
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this.element.style.willChange = 'transform';
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this.setTransition();
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}
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onMouseMove(event) {
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if (this.updateCall !== null) {
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cancelAnimationFrame(this.updateCall);
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}
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this.event = event;
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this.updateCall = requestAnimationFrame(this.updateBind);
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}
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onMouseLeave() {
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this.setTransition();
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if (this.settings.reset) {
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requestAnimationFrame(this.resetBind);
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}
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}
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reset() {
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this.event = {
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clientX: this.left + this.width / 2,
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clientY: this.top + this.height / 2
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};
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if (this.element && this.element.style) {
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this.element.style.transform =
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`perspective(${this.settings.perspective}px) ` +
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`rotateX(0deg) ` +
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`rotateY(0deg) ` +
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`scale3d(1, 1, 1)`;
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}
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this.resetGlare();
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}
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resetGlare() {
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if (this.glare) {
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this.glareElement.style.transform = 'rotate(180deg) translate(-50%, -50%)';
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this.glareElement.style.opacity = '0';
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}
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}
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updateInitialPosition() {
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if (this.settings.startX === 0 && this.settings.startY === 0) {
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return;
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}
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this.onMouseEnter();
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if (this.fullPageListening) {
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this.event = {
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clientX:
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((this.settings.startX + this.settings.max) / (2 * this.settings.max)) *
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this.clientWidth,
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clientY:
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((this.settings.startY + this.settings.max) / (2 * this.settings.max)) *
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this.clientHeight
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};
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} else {
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this.event = {
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clientX:
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this.left +
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((this.settings.startX + this.settings.max) / (2 * this.settings.max)) * this.width,
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clientY:
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this.top +
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((this.settings.startY + this.settings.max) / (2 * this.settings.max)) * this.height
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};
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}
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let backupScale = this.settings.scale;
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this.settings.scale = 1;
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this.update();
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this.settings.scale = backupScale;
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this.resetGlare();
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}
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getValues() {
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let x, y;
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if (this.fullPageListening) {
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x = this.event.clientX / this.clientWidth;
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y = this.event.clientY / this.clientHeight;
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} else {
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x = (this.event.clientX - this.left) / this.width;
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y = (this.event.clientY - this.top) / this.height;
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}
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x = Math.min(Math.max(x, 0), 1);
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y = Math.min(Math.max(y, 0), 1);
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let tiltX = (this.reverse * (this.settings.max - x * this.settings.max * 2)).toFixed(2);
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let tiltY = (this.reverse * (y * this.settings.max * 2 - this.settings.max)).toFixed(2);
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let angle =
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Math.atan2(
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this.event.clientX - (this.left + this.width / 2),
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-(this.event.clientY - (this.top + this.height / 2))
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) *
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(180 / Math.PI);
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return {
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tiltX: tiltX,
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tiltY: tiltY,
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percentageX: x * 100,
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percentageY: y * 100,
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angle: angle
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};
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}
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updateElementPosition() {
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let rect = this.element.getBoundingClientRect();
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this.width = this.element.offsetWidth;
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this.height = this.element.offsetHeight;
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this.left = rect.left;
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this.top = rect.top;
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}
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update() {
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let values = this.getValues();
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this.element.style.transform =
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'perspective(' +
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this.settings.perspective +
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'px) ' +
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'rotateX(' +
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(this.settings.axis === 'x' ? 0 : values.tiltY) +
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'deg) ' +
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'rotateY(' +
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(this.settings.axis === 'y' ? 0 : values.tiltX) +
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'deg) ' +
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'scale3d(' +
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this.settings.scale +
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', ' +
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this.settings.scale +
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', ' +
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this.settings.scale +
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')';
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if (this.glare) {
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this.glareElement.style.transform = `rotate(${values.angle}deg) translate(-50%, -50%)`;
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this.glareElement.style.opacity = `${
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(values.percentageY * this.settings['max-glare']) / 100
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}`;
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}
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this.element.dispatchEvent(
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new CustomEvent('tiltChange', {
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detail: values
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})
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);
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this.updateCall = null;
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}
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/**
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* Appends the glare element (if glarePrerender equals false)
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* and sets the default style
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*/
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prepareGlare() {
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// If option pre-render is enabled we assume all html/css is present for an optimal glare effect.
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if (!this.glarePrerender) {
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// Create glare element
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const jsTiltGlare = document.createElement('div');
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jsTiltGlare.classList.add('js-tilt-glare');
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const jsTiltGlareInner = document.createElement('div');
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jsTiltGlareInner.classList.add('js-tilt-glare-inner');
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jsTiltGlare.appendChild(jsTiltGlareInner);
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this.element.appendChild(jsTiltGlare);
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}
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this.glareElementWrapper = this.element.querySelector('.js-tilt-glare');
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this.glareElement = this.element.querySelector('.js-tilt-glare-inner');
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if (this.glarePrerender) {
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return;
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}
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Object.assign(this.glareElementWrapper.style, {
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position: 'absolute',
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top: '0',
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left: '0',
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width: '100%',
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height: '100%',
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overflow: 'hidden',
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'pointer-events': 'none'
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});
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Object.assign(this.glareElement.style, {
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position: 'absolute',
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top: '50%',
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left: '50%',
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'pointer-events': 'none',
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'background-image': `linear-gradient(0deg, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%)`,
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transform: 'rotate(180deg) translate(-50%, -50%)',
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'transform-origin': '0% 0%',
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opacity: '0'
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});
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this.updateGlareSize();
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}
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updateGlareSize() {
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if (this.glare) {
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const glareSize =
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(this.element.offsetWidth > this.element.offsetHeight
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? this.element.offsetWidth
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: this.element.offsetHeight) * 2;
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||||||
|
|
||||||
|
Object.assign(this.glareElement.style, {
|
||||||
|
width: `${glareSize}px`,
|
||||||
|
height: `${glareSize}px`
|
||||||
|
});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
updateClientSize() {
|
||||||
|
this.clientWidth =
|
||||||
|
window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
|
||||||
|
|
||||||
|
this.clientHeight =
|
||||||
|
window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
|
||||||
|
}
|
||||||
|
|
||||||
|
onWindowResize() {
|
||||||
|
this.updateGlareSize();
|
||||||
|
this.updateClientSize();
|
||||||
|
}
|
||||||
|
|
||||||
|
setTransition() {
|
||||||
|
clearTimeout(this.transitionTimeout);
|
||||||
|
this.element.style.transition = this.settings.speed + 'ms ' + this.settings.easing;
|
||||||
|
if (this.glare)
|
||||||
|
this.glareElement.style.transition = `opacity ${this.settings.speed}ms ${this.settings.easing}`;
|
||||||
|
|
||||||
|
this.transitionTimeout = setTimeout(() => {
|
||||||
|
this.element.style.transition = '';
|
||||||
|
if (this.glare) {
|
||||||
|
this.glareElement.style.transition = '';
|
||||||
|
}
|
||||||
|
}, this.settings.speed);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method return patched settings of instance
|
||||||
|
* @param {boolean} settings.reverse - reverse the tilt direction
|
||||||
|
* @param {number} settings.max - max tilt rotation (degrees)
|
||||||
|
* @param {startX} settings.startX - the starting tilt on the X axis, in degrees. Default: 0
|
||||||
|
* @param {startY} settings.startY - the starting tilt on the Y axis, in degrees. Default: 0
|
||||||
|
* @param {number} settings.perspective - Transform perspective, the lower the more extreme the tilt gets
|
||||||
|
* @param {string} settings.easing - Easing on enter/exit
|
||||||
|
* @param {number} settings.scale - 2 = 200%, 1.5 = 150%, etc..
|
||||||
|
* @param {number} settings.speed - Speed of the enter/exit transition
|
||||||
|
* @param {boolean} settings.transition - Set a transition on enter/exit
|
||||||
|
* @param {string|null} settings.axis - What axis should be disabled. Can be X or Y
|
||||||
|
* @param {boolean} settings.glare - What axis should be disabled. Can be X or Y
|
||||||
|
* @param {number} settings.max-glare - the maximum "glare" opacity (1 = 100%, 0.5 = 50%)
|
||||||
|
* @param {boolean} settings.glare-prerender - false = VanillaTilt creates the glare elements for you, otherwise
|
||||||
|
* @param {boolean} settings.full-page-listening - If true, parallax effect will listen to mouse move events on the whole document, not only the selected element
|
||||||
|
* @param {string|object} settings.mouse-event-element - String selector or link to HTML-element what will be listen mouse events
|
||||||
|
* @param {boolean} settings.reset - false = If the tilt effect has to be reset on exit
|
||||||
|
* @param {gyroscope} settings.gyroscope - Enable tilting by deviceorientation events
|
||||||
|
* @param {gyroscopeSensitivity} settings.gyroscopeSensitivity - Between 0 and 1 - The angle at which max tilt position is reached. 1 = 90deg, 0.5 = 45deg, etc..
|
||||||
|
* @param {gyroscopeSamples} settings.gyroscopeSamples - How many gyroscope moves to decide the starting position.
|
||||||
|
*/
|
||||||
|
extendSettings(settings) {
|
||||||
|
let defaultSettings = {
|
||||||
|
reverse: false,
|
||||||
|
max: 15,
|
||||||
|
startX: 0,
|
||||||
|
startY: 0,
|
||||||
|
perspective: 1000,
|
||||||
|
easing: 'cubic-bezier(.03,.98,.52,.99)',
|
||||||
|
scale: 1,
|
||||||
|
speed: 300,
|
||||||
|
transition: true,
|
||||||
|
axis: null,
|
||||||
|
glare: false,
|
||||||
|
'max-glare': 1,
|
||||||
|
'glare-prerender': false,
|
||||||
|
'full-page-listening': false,
|
||||||
|
'mouse-event-element': null,
|
||||||
|
reset: true,
|
||||||
|
gyroscope: true,
|
||||||
|
gyroscopeMinAngleX: -45,
|
||||||
|
gyroscopeMaxAngleX: 45,
|
||||||
|
gyroscopeMinAngleY: -45,
|
||||||
|
gyroscopeMaxAngleY: 45,
|
||||||
|
gyroscopeSamples: 10
|
||||||
|
};
|
||||||
|
|
||||||
|
let newSettings = {};
|
||||||
|
for (var property in defaultSettings) {
|
||||||
|
if (property in settings) {
|
||||||
|
newSettings[property] = settings[property];
|
||||||
|
} else if (this.element.hasAttribute('data-tilt-' + property)) {
|
||||||
|
let attribute = this.element.getAttribute('data-tilt-' + property);
|
||||||
|
try {
|
||||||
|
newSettings[property] = JSON.parse(attribute);
|
||||||
|
} catch (e) {
|
||||||
|
newSettings[property] = attribute;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
newSettings[property] = defaultSettings[property];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return newSettings;
|
||||||
|
}
|
||||||
|
|
||||||
|
static init(elements, settings) {
|
||||||
|
if (elements instanceof Node) {
|
||||||
|
elements = [elements];
|
||||||
|
}
|
||||||
|
|
||||||
|
if (elements instanceof NodeList) {
|
||||||
|
elements = [].slice.call(elements);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!(elements instanceof Array)) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
elements.forEach((element) => {
|
||||||
|
if (!('vanillaTilt' in element)) {
|
||||||
|
element.vanillaTilt = new VanillaTilt(element, settings);
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (typeof document !== 'undefined') {
|
||||||
|
/* expose the class to window */
|
||||||
|
window.VanillaTilt = VanillaTilt;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Auto load
|
||||||
|
*/
|
||||||
|
VanillaTilt.init(document.querySelectorAll('[data-tilt]'));
|
||||||
|
}
|
||||||
|
|
||||||
|
return VanillaTilt;
|
||||||
|
})();
|
||||||
Loading…
Reference in new issue