H5+C3 implements carousel photo album

This time I will bring you H5+C3 to realize the carousel photo album. What are the precautions for H5+C3 to realize the carousel photo album. The following is a practical case, let’s take a look.

Rendering: Hehe, I made some photos of my graduation from college into a merry-go-round, spinning around my liberal arts major, not forgetting the nurturing grace of my alma mater~

1. perspective

The perspective attribute includes two attributes: none and the length value with unit.

The default value of the perspective attribute is none, which means that the 3D object looks flat from infinite angles. Another value, , accepts a value with length units greater than 0. And its unit cannot be a percentage value. The larger the value, the farther the angle appears, creating a rather low intensity and very little change in 3D space. Conversely, the smaller this value, the closer the angle appears, creating a strong angle and a large 3D variation. To put it simply: when perspective sets length, the smaller it is, the more obvious the 3D effect is and the closer your eyes are to the 3D object, and vice versa.

2. transform: translateZ(length)

Assuming that perspective: 300px is set, the smaller the value of translateZ is set, the smaller the size of the sub-element will be. When the value is set When it is close to 300px, it seems that the element is in front of you. When it exceeds 300px, it reaches the back of your field of view and the element is invisible.

The core of the above example:

1. First, all the image containers have position:absolute, superimpose them together, and then set rotateY to 40*i and i respectively. = 0, 1, 2...9; all pictures will intersect into a flower-like shape

2. Then set translateZ for the container of each picture, and all pictures will move outward from the corresponding angle. Expand it into a big circle, which is the effect in the picture above.

html:

nbsp;html>  
  
  
    <title></title>  
    <meta>  
    <link>  
    <script></script>  
  
    <script>  
        // alert( 64 / Math.tan(20 / 180 * Math.PI));  
        var transform = function (element, value, key)  
        {  
            key = key || "Transform";  
            ["Moz", "O", "Ms", "Webkit", ""].forEach(function (prefix)  
            {  
                element.style[prefix + key] = value;  
            });  
  
            return element;  
        }  
  
  
        $(function ()  
        {  
            var deg = -40 , i = 1;  
            $("#container").click(function ()  
            {  
                transform($(this)[0], "rotateY(" + (deg * i++) + "deg)")  
            });  
        });  
  
    </script>  
  
     
  
  
  
<p>  
    </p>

           
•                               Do one thing at a time, and do well..           
           
•                 Do one thing at a time, and do well..           
           
•                 Keep on going never give up.           
           
•                 Whatever is worth doing is worth doing well.           
           
•                 Believe in yourself.           
           
•                 Action speak louder than words.           
           
•                 Never put off what you can do today until tomorrow.           
           
•                 Jack of all trades and master of none.           
           
•                 Judge not from appearances.           
       

        

CSS:

li  
{  
    width: 128px;  
    box-shadow: 0 1px 3px rgba(0, 0, 0, .5);  
    position: absolute;  
    bottom: 0;  
}  
  
li img  
{  
    width: 128px;  
    box-shadow: 0 1px 3px rgba(0, 0, 0, .5);  
    vertical-align: middle;  
}  
  
li span  
{  
    display: block;  
    width: 128px;  
    text-align: center;  
    color: #333;  
    font-size: 8px;  
}  
  
#stage  
{  
  
    width: 900px;  
    min-height: 100px;  
    margin-left: auto;  
    margin-right: auto;  
    padding: 100px 50px;  
    -webkit-perspective: 1200px;  
    position: relative;  
}  
  
#container  
{  
    background: url("img/xawl.jpg") no-repeat 0 0;  
    margin-top: 200px;  
    width: 128px;  
    box-shadow: 0 1px 3px rgba(0, 0, 0, .5);  
    height: 100px;  
    margin-left: -64px;  
    -webkit-transition: -webkit-transform 1s;  
    transition: transform 1s;  
    -webkit-transform-style: preserve-3d;  
    position: absolute;  
    left: 50%;  
}  
  
li:nth-child(0)  
{  
    -webkit-transform: rotateY(0deg) translateZ(300px);  
}  
  
li:nth-child(1)  
{  
    -webkit-transform: rotateY(40deg) translateZ(300px);  
}  
  
li:nth-child(2)  
{  
    -webkit-transform: rotateY(80deg) translateZ(300px);  
}  
  
li:nth-child(3)  
{  
    -webkit-transform: rotateY(120deg) translateZ(300px);  
}  
  
li:nth-child(4)  
{  
    -webkit-transform: rotateY(160deg) translateZ(300px);  
}  
  
li:nth-child(5)  
{  
    -webkit-transform: rotateY(200deg) translateZ(300px);  
}  
  
li:nth-child(6)  
{  
    -webkit-transform: rotateY(240deg) translateZ(300px);  
}  
  
li:nth-child(7)  
{  
    -webkit-transform: rotateY(280deg) translateZ(300px);  
}  
  
li:nth-child(8)  
{  
    -webkit-transform: rotateY(320deg) translateZ(300px);  
}  
  
li:nth-child(9)  
{  
    -webkit-transform: rotateY(360deg) translateZ(300px);  
}

p#stage is used as the stage, set perspective, set rotateY and translateZ for each li respectively; then we will set p#container -webkit-transform-style: preserve-3d; transform-style: flat | preserve-3d where the flat value is the default value, indicating that all child elements are rendered on a 2D plane. preserve-3d means that all child elements are rendered in 3D space. If the transform-style value is set to preserve-3d for an element, it means that the flattening operation is not performed and all its child elements are located in 3D space. Under normal circumstances, this attribute is used for the execution element of 3D animation effects, that is, it is to apply 3D animation effects, so its child elements should all be in 3D space.

One thing to note: In this example, the animation effect is actually due to mouse click, p#Container is changing rotateY inappropriately, all picture elements are in p#container, and have been displayed as a carousel Effect, what you need to do now is to rotate the Trojan, so you only need to change the rotateY 40 angle of p#container each time.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of H5’s storage method

How to use H5’s constraint verification API

postMessage implements cross-domain and cross-window messaging

The above is the detailed content of H5+C3 implements carousel photo album. For more information, please follow other related articles on the PHP Chinese website!