JavaScript 实现3D逐帧产品展示滑动交互

3D逐帧产品展示实现

3D逐帧图片素材

JavaScript核心代码

JavaScript部分代码

 
var step = 0;
var first = 0;
var lth = document.querySelectorAll('#tobj img').length;
window.addEventListener('touchstart',function(e){
e.preventDefault();
first = e.touches[0].pageX;
}) 
window.addEventListener('touchmove',function(e){
e.preventDefault();
var x = e.pageX || e.touches[0].pageX;
document.getElementById('outs').innerHTML = step;
if(Math.abs(x - first)>10){
document.querySelectorAll('#tobj img')[step].style.display = 'none'
if(x<first){
step++;
if(step>=lth-1){
step =0
} 
}else{
step--
if(step<=0){
step = lth-1;
} 
} 
first = x;
document.querySelectorAll('#tobj img')[step].style.display = 'block'
} 
}) 
window.addEventListener('touchend',function(e){
e.preventDefault();
step = step;
}) 

核心精简

 
if(Math.abs(x - first)>10){
document.querySelectorAll('#tobj img')[step].style.display = 'none'
if(x<first){
step++;
if(step>=lth-1){
step =0
} 
}else{
step--
if(step<=0){
step = lth-1;
} 
} 
first = x;
document.querySelectorAll('#tobj img')[step].style.display = 'block'
}