Difference between revisions of "Team:DUT China B"

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   </style>
 
   </style>
 
         <script>
 
         <script>
/* Modernizr 2.8.3 (Custom Build) | MIT & BSD
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jQuery(document).ready(function($){
* Build: http://modernizr.com/download/#-fontface-backgroundsize-borderimage-borderradius-boxshadow-flexbox-hsla-multiplebgs-opacity-rgba-textshadow-cssanimations-csscolumns-generatedcontent-cssgradients-cssreflections-csstransforms-csstransforms3d-csstransitions-applicationcache-canvas-canvastext-draganddrop-hashchange-history-audio-video-indexeddb-input-inputtypes-localstorage-postmessage-sessionstorage-websockets-websqldatabase-webworkers-geolocation-inlinesvg-smil-svg-svgclippaths-touch-webgl-shiv-cssclasses-addtest-prefixed-teststyles-testprop-testallprops-hasevent-prefixes-domprefixes-load
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//change this value if you want to change the speed of the scale effect
*/
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+
//change this value if you want to set a different initial opacity for the .cd-half-block
 +
boxShadowOpacityInitialValue = 0.7,
 +
animating = false;
 +
 +
//check the media query
 +
var MQ = window.getComputedStyle(document.querySelector('body'), '::before').getPropertyValue('content').replace(/"/g, "");
 +
$(window).on('resize', function(){
 +
MQ = window.getComputedStyle(document.querySelector('body'), '::before').getPropertyValue('content').replace(/"/g, "");
 +
});
 +
 
 +
//bind the animation to the window scroll event
 +
triggerAnimation();
 +
$(window).on('scroll', function(){
 +
triggerAnimation();
 +
});
 +
 
 +
//move to next/previous section
 +
    $('.cd-vertical-nav .cd-prev').on('click', function(){
 +
    prevSection();
 +
    });
 +
    $('.cd-vertical-nav .cd-next').on('click', function(){
 +
    nextSection();
 +
    });
 +
    $(document).keydown(function(event){
 +
if( event.which=='38' ) {
 +
prevSection();
 +
event.preventDefault();
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} else if( event.which=='40' ) {
 +
nextSection();
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event.preventDefault();
 +
}
 +
});
 +
 
 +
function triggerAnimation(){
 +
if(MQ == 'desktop') {
 +
//if on desktop screen - animate sections
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(!window.requestAnimationFrame) ? animateSection() : window.requestAnimationFrame(animateSection);
 +
} else {
 +
//on mobile - remove the style added by jQuery
 +
$('.cd-section').find('.cd-block').removeAttr('style').find('.cd-half-block').removeAttr('style');
 +
}
 +
//update navigation arrows visibility
 +
checkNavigation();
 +
}
 +
 +
function animateSection () {
 +
var scrollTop = $(window).scrollTop(),
 +
windowHeight = $(window).height(),
 +
windowWidth = $(window).width();
 +
 +
$('.cd-section').each(function(){
 +
var actualBlock = $(this),
 +
offset = scrollTop - actualBlock.offset().top,
 +
scale = 1,
 +
translate = windowWidth/2+'px',
 +
opacity,
 +
boxShadowOpacity;
 +
 
 +
if( offset >= -windowHeight && offset <= 0 ) {
 +
//move the two .cd-half-block toward the center - no scale/opacity effect
 +
scale = 1,
 +
opacity = 1,
 +
translate = (windowWidth * 0.5 * (- offset/windowHeight)).toFixed(0)+'px';
 +
 
 +
} else if( offset > 0 && offset <= windowHeight ) {
 +
//the two .cd-half-block are in the center - scale the .cd-block element and reduce the opacity
 +
translate = 0+'px',
 +
scale = (1 - ( offset * scaleSpeed/windowHeight)).toFixed(5),
 +
opacity = ( 1 - ( offset/windowHeight) ).toFixed(5);
 +
 
 +
} else if( offset < -windowHeight ) {
 +
//section not yet visible
 +
scale = 1,
 +
translate = windowWidth/2+'px',
 +
opacity = 1;
 +
 
 +
} else {
 +
//section not visible anymore
 +
opacity = 0;
 +
}
 +
 +
boxShadowOpacity = parseInt(translate.replace('px', ''))*boxShadowOpacityInitialValue/20;
 +
 +
//translate/scale section blocks
 +
scaleBlock(actualBlock.find('.cd-block'), scale, opacity);
 +
 
 +
var directionFirstChild = ( actualBlock.is(':nth-of-type(even)') ) ? '-': '+';
 +
var directionSecondChild = ( actualBlock.is(':nth-of-type(even)') ) ? '+': '-';
 +
if(actualBlock.find('.cd-half-block')) {
 +
translateBlock(actualBlock.find('.cd-half-block').eq(0), directionFirstChild+translate, boxShadowOpacity);
 +
translateBlock(actualBlock.find('.cd-half-block').eq(1), directionSecondChild+translate, boxShadowOpacity);
 +
}
 +
//this is used to navigate through the sections
 +
( offset >= 0 && offset < windowHeight ) ? actualBlock.addClass('is-visible') : actualBlock.removeClass('is-visible');
 +
});
 +
}
 +
 
 +
function translateBlock(elem, value, shadow) {
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var position = Math.ceil(Math.abs(value.replace('px', '')));
 +
 +
if( position >= $(window).width()/2 ) {
 +
shadow = 0;
 +
} else if ( position > 20 ) {
 +
shadow = boxShadowOpacityInitialValue;
 +
}
 +
 
 +
elem.css({
 +
    '-moz-transform': 'translateX(' + value + ')',
 +
    '-webkit-transform': 'translateX(' + value + ')',
 +
'-ms-transform': 'translateX(' + value + ')',
 +
'-o-transform': 'translateX(' + value + ')',
 +
'transform': 'translateX(' + value + ')',
 +
'box-shadow' : '0px 0px 40px rgba(0,0,0,'+shadow+')'
 +
});
 +
}
 +
 
 +
function scaleBlock(elem, value, opac) {
 +
elem.css({
 +
    '-moz-transform': 'scale(' + value + ')',
 +
    '-webkit-transform': 'scale(' + value + ')',
 +
'-ms-transform': 'scale(' + value + ')',
 +
'-o-transform': 'scale(' + value + ')',
 +
'transform': 'scale(' + value + ')',
 +
'opacity': opac
 +
});
 +
}
 +
 
 +
function nextSection() {
 +
if (!animating) {
 +
if ($('.cd-section.is-visible').next().length > 0) smoothScroll($('.cd-section.is-visible').next());
 +
}
 +
}
 +
 
 +
function prevSection() {
 +
if (!animating) {
 +
var prevSection = $('.cd-section.is-visible');
 +
if(prevSection.length > 0 && $(window).scrollTop() != prevSection.offset().top) {
 +
smoothScroll(prevSection);
 +
} else if(prevSection.prev().length > 0 && $(window).scrollTop() == prevSection.offset().top) {
 +
smoothScroll(prevSection.prev('.cd-section'));
 +
}
 +
}
 +
}
 +
 
 +
function checkNavigation() {
 +
( $(window).scrollTop() < $(window).height()/2 ) ? $('.cd-vertical-nav .cd-prev').addClass('inactive') : $('.cd-vertical-nav .cd-prev').removeClass('inactive');
 +
( $(window).scrollTop() > $(document).height() - 3*$(window).height()/2 ) ? $('.cd-vertical-nav .cd-next').addClass('inactive') : $('.cd-vertical-nav .cd-next').removeClass('inactive');
 +
}
 +
 
 +
function smoothScroll(target) {
 +
animating = true;
 +
        $('body,html').animate({'scrollTop': target.offset().top}, 500, function(){ animating = false; });
 +
}
 +
});
 
</script>
 
</script>
 
</head>
 
</head>

Revision as of 10:07, 28 June 2019

3D Curtain Template

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