Code to create a butterfly flapping its wings using css3-CSS Tutorial-php.cn

Code to create a butterfly flapping its wings using css3

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Release： 2018-06-20 15:19:53

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This article mainly introduces the relevant information on the example of making a butterfly flapping its wings using pure CSS3. The content is quite good. I will share it with you now and give it as a reference.

Pure css3 to make a butterfly flapping its wings, let’s see the effect first

, the effect is not bad

Upload the code:

html

<p id="butterfly">
    <p class="leftSide"></p>
    <p class="body"></p>
    <p class="rightSide"></p>
</p>

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css

body{
            background: url("./images/bg.jpg") no-repeat;
        }
        #butterfly{
            width: 600px;
            height: 500px;
            position: relative;
            transform: scale(0.35);
            transform-style: preserve-3d;
        }
        .leftSide{
            width: 267px;
            height: 421px;
            background: url("./images/leftSide.png") no-repeat;
            position: absolute;
            left: 26px;
            top: 40px;
            animation: left 2s infinite;
            z-index: 9999;
        }
        @keyframes left {
            0%{
                transform: rotateY(0deg);
                transform-origin: right center;
                perspective: 201px;

            }
            50%{
                transform: rotateY(70deg);
                transform-origin: right center;
                perspective: 201px;

            }
            100%{
                transform: rotateY(0deg);
                transform-origin: right center;
                perspective: 201px;
            }
        }
        @keyframes right {
            0%{
                transform: rotateY(0);
                transform-origin: left center;
                perspective: 201px;

            }
            50%{
                transform: rotateY(-70deg);
                transform-origin: left center;
                perspective: 201px;

            }
            100%{
                transform: rotateY(0);
                transform-origin: left center;
                perspective: 201px;

            }
        }
        .body{
            width: 152px;
            height: 328px;
            background: url("./images/body.png") no-repeat;
            position: absolute;
            margin: auto;
            left: 0;
            right: 0;
            bottom: 0;
            top: 0;
            z-index: 9999;
        }
        .rightSide{
            width: 284px;
            height: 460px;
            background: url("./images/rightSide.png") no-repeat;
            position: absolute;
            right: 26px;
            top: 58px;
            animation: right 2s infinite;
            z-index: 9999;
        }

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Introduce a few before this css properties;

@keyframes

Through @keyframes rules, we can create animations
The principle of creating animation is to gradually change one set of CSS styles into another set of styles
Specify the time when the change occurs as a percentage, or through the keywords "from" and "to" , equivalent to 0% and 100%.
0% is the start time of the animation, 100% is the end time of the animation

transform: rotateY()

The transform property applies a 2D or 3D transformation to an element. This property allows us to rotate, scale, move or tilt the element.
rotateY() defines a 3D rotation along the Y axis.

This picture illustrates the xyz axis very intuitively. In fact, students who have studied 3D modeling software such as 3DS MAX should be more familiar with this 3 axis orientation.

Implementation idea: First use the son and father phase to absolutely position the left wing, right wing, and body together, and then use the rotateY of transform to rotate them along the y-axis. The @keyframe animation is used here for rotation. , and then repeat the action.

We also want to focus on the attribute transform-style: preserve-3d;. The description of w3c is to enable the converted sub-elements to retain their 3D transformation. That is to say, all sub-elements are presented in 3D space. On the contrary, if it is set to flat, all sub-elements will be presented in 2D space.

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